Fix potential memory leak for big rescaling

That only happens when the rescaling buffer from WebPRescalerInit does not fit in a size_t, so on 32-bit or less. Change-Id: I18a79106d0c47f7ddf130099dde0fec6f2a2301d
Fix fuzzer when one scaled dimension is 0
2025-12-24 14:06:27 +01:00 · 2025-12-23 10:59:13 +01:00 · 2025-12-19 09:58:16 +00:00 · 2025-12-12 04:24:11 -08:00 · 2025-12-09 12:18:25 -08:00 · 2025-12-09 13:25:50 +01:00
273 changed files with 27544 additions and 23331 deletions
--- a/.clang-format
+++ b/.clang-format
@@ -0,0 +1,4 @@
+---
+Language:        Cpp
+BasedOnStyle:  Google
+DerivePointerAlignment: false
--- a/.mailmap
+++ b/.mailmap
@@ -17,3 +17,4 @@ Roberto Alanis <alanisbaez@google.com>
 Brian Ledger <brianpl@google.com>
 Maryla Ustarroz-Calonge <maryla@google.com>
 Yannis Guyon <yguyon@google.com>
+Henner Zeller <hzeller@google.com> <h.zeller@acm.org>
--- a/5
+++ b/5
@@ -10,12 +10,16 @@ Contributors:
 - Christian Duvivier (cduvivier at google dot com)
 - Christopher Degawa (ccom at randomderp dot com)
 - Clement Courbet (courbet at google dot com)
+- devtools-clrobot at google dot com (devtools-clrobot@google dot com)
 - Djordje Pesut (djordje dot pesut at imgtec dot com)
+- Frank (1433351828 at qq dot com)
 - Frank Barchard (fbarchard at google dot com)
+- Henner Zeller (hzeller at google dot com)
 - Hui Su (huisu at google dot com)
 - H. Vetinari (h dot vetinari at gmx dot com)
 - Ilya Kurdyukov (jpegqs at gmail dot com)
 - Ingvar Stepanyan (rreverser at google dot com)
+- Istvan Stefan (Istvan dot Stefan at arm dot com)
 - James Zern (jzern at google dot com)
 - Jan Engelhardt (jengelh at medozas dot de)
 - Jehan (jehan at girinstud dot io)
@@ -62,6 +66,7 @@ Contributors:
 - Vincent Rabaud (vrabaud at google dot com)
 - Vlad Tsyrklevich (vtsyrklevich at chromium dot org)
 - Wan-Teh Chang (wtc at google dot com)
+- wrv (wrv at utexas dot edu)
 - Yang Zhang (yang dot zhang at arm dot com)
 - Yannis Guyon (yguyon at google dot com)
 - Zhi An Ng (zhin at chromium dot org)
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -9,11 +9,7 @@
 if(APPLE)
  cmake_minimum_required(VERSION 3.17)
 else()
-  cmake_minimum_required(VERSION 3.7)
-endif()
-
-if(POLICY CMP0072)
-  cmake_policy(SET CMP0072 NEW)
+  cmake_minimum_required(VERSION 3.16)
 endif()

 project(WebP C)
@@ -50,6 +46,10 @@ option(WEBP_USE_THREAD "Enable threading support" ON)
 option(WEBP_NEAR_LOSSLESS "Enable near-lossless encoding" ON)
 option(WEBP_ENABLE_SWAP_16BIT_CSP "Enable byte swap for 16 bit colorspaces."
       OFF)
+option(
+  WEBP_ENABLE_FBOUNDS_SAFETY
+  "Enable -fbounds-safety for the part of the codebase which supports it. This expects an experimental toolchain."
+  OFF)
 set(WEBP_BITTRACE "0" CACHE STRING "Bit trace mode (0=none, 1=bit, 2=bytes)")
 set_property(CACHE WEBP_BITTRACE PROPERTY STRINGS 0 1 2)
 option(WEBP_ENABLE_WUNUSED_RESULT "Add [[nodiscard]] to some functions. \
@@ -88,6 +88,15 @@ if(WEBP_BUILD_WEBP_JS)
    message(NOTICE
            "wasm2js does not support SIMD, disabling webp.js generation.")
  endif()
+
+  if(NOT EMSCRIPTEN_VERSION)
+    message(
+      WARNING
+        "EMSCRIPTEN_VERSION not detected!\n"
+        "WEBP_BUILD_WEBP_JS is only supported with emcmake/emmake.\n"
+        "The build may fail if those tools are not used. See webp_js/README.md."
+    )
+  endif()
 endif()

 set(SHARPYUV_DEP_LIBRARIES)
@@ -140,6 +149,16 @@ if(WIN32 AND BUILD_SHARED_LIBS)
  add_definitions(-DWEBP_DLL)
 endif()

+# Compatibility with autoconf configure script's way of setting this
+if(CMAKE_C_BYTE_ORDER STREQUAL "BIG_ENDIAN")
+  set(WORDS_BIGENDIAN TRUE)
+elseif(CMAKE_C_BYTE_ORDER STREQUAL "LITTLE_ENDIAN")
+  set(WORDS_BIGENDIAN FALSE)
+else()
+  set(WORDS_BIGENDIAN FALSE)
+  message(WARNING "Endianness could not be determined.")
+endif()
+
 # pkg-config variables used by *.pc.in.
 set(prefix ${CMAKE_INSTALL_PREFIX})
 set(exec_prefix "\${prefix}")
@@ -403,6 +422,15 @@ target_include_directories(webputils PRIVATE ${CMAKE_CURRENT_BINARY_DIR}
                                             ${CMAKE_CURRENT_SOURCE_DIR})
 add_library(webp $<TARGET_OBJECTS:webpdecode> $<TARGET_OBJECTS:webpdsp>
                 $<TARGET_OBJECTS:webpencode> $<TARGET_OBJECTS:webputils>)
+if(WEBP_ENABLE_FBOUNDS_SAFETY)
+  # Enable -fbounds-safety only for webputils and webpdecode(r) for now.
+  add_definitions(-DWEBP_SUPPORT_FBOUNDS_SAFETY=1)
+  target_compile_options(webputils PRIVATE -fbounds-safety)
+  target_compile_options(webputilsdecode PRIVATE -fbounds-safety)
+  target_compile_options(webpdecode PRIVATE -fbounds-safety)
+  target_compile_options(webpdecoder PRIVATE -fbounds-safety)
+endif()
+
 target_link_libraries(webp sharpyuv)
 if(XCODE)
  libwebp_add_stub_file(webp)
@@ -567,7 +595,8 @@ if(WEBP_BUILD_GIF2WEBP)
  add_executable(gif2webp ${GIF2WEBP_SRCS})
  target_link_libraries(gif2webp exampleutil imageioutil webp libwebpmux
                        ${WEBP_DEP_GIF_LIBRARIES})
-  target_include_directories(gif2webp PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/src)
+  target_include_directories(gif2webp PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/src
+                                              ${CMAKE_CURRENT_SOURCE_DIR})
  install(TARGETS gif2webp RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})
 endif()

--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -64,8 +64,7 @@ for additional details.

 The C code style is based on the
 [Google C++ Style Guide](https://google.github.io/styleguide/cppguide.html) and
-`clang-format --style=Google`, though this project doesn't use the tool to
-enforce the formatting.
+the formatting is enforced using `clang-format --style=Google`.

 CMake files are formatted with
 [cmake-format](https://cmake-format.readthedocs.io/en/latest/). `cmake-format
--- a/200
+++ b/200
@@ -1,3 +1,203 @@
+370aa581 webp_js/README.md: add some more code formatting (``)
+f83c6b32 CMakeLists: add warning for incorrect emscripten config
+6a3e656b update ChangeLog (tag: v1.6.0-rc1)
+bf0bf1e7 api.md: add WebPValidateDecoderConfig to pseudocode
+e8ae210d update NEWS
+ce53efd7 bump version to 1.6.0
+1c333170 update AUTHORS
+85e098e5 webpmux: fix heap overflow w/-get/-set
+418340d8 Merge "Make histogram allocation and access more readable and type-safe." into main
+23ce76fa Merge "VP8BitReaderSetBuffer: move NULL check to call site" into main
+bbf3cbb1 VP8BitReaderSetBuffer: move NULL check to call site
+f6b87e03 Fix const style guide
+8852f89a Have lossless return the same results with/without -mt
+e015dcc0 Make histogram allocation and access more readable and type-safe.
+753ed11e enc_neon.c: fix aarch64 compilation w/gcc < 8.5.0
+0cd0b7a7 enc_fuzzer.cc: remove duplicate <cstdlib> include
+2209ffba swig,cosmetics: normalize includes
+15e2e1ee analysis_enc.c: remove unused include
+98c27801 IWYU: Include all headers for symbols used in files.
+eb3ff781 Only use valid histograms in VP8LHistogramSet
+57e324e2 Refactor VP8LHistogram histogram_enc.cc
+7191a602 Merge "Generalize trivial histograms" into main
+19696e0a Merge "alpha_processing_sse2: quiet signed conv warning" into main
+89b01ecc Merge "cwebp: add `-resize_mode`" into main
+52a430a7 Generalize trivial histograms
+e53e2130 Cache all costs in the histograms
+f8b360c4 alpha_processing_sse2: quiet signed conv warning
+eb4f8137 cwebp: add `-resize_mode`
+ad52d5fc dec/dsp/enc/utils,cosmetics: rm struct member '_' suffix
+ed7cd6a7 utils.c,cosmetics: rm struct member '_' suffix
+3a23b0f0 random_utils.[hc],cosmetics: rm struct member '_' suffix
+a99d0e6f quant_levels_dec_utils.c,cosmetics: rm struct member '_' suffix
+1ed4654d huffman_encode_utils.[hc],cosmetics: rm struct member '_' suffix
+f0689e48 config_enc.c,cosmetics: rm struct member '_' suffix
+24262266 mux,cosmetics: rm struct member '_' suffix
+3f54b1aa demux,cosmetics: rm struct member '_' suffix
+295804e4 examples,cosmetics: rm struct member '_' suffix
+5225592f Refactor VP8LHistogram to hide initializations from the user.
+00338240 Remove some computations in histogram clustering
+44f91b0d Speed DispatchAlpha_SSE2 up
+ee8e8c62 Fix member naming for VP8LHistogram
+a1ad3f1e Merge "Remove now unused ExtraCostCombined" into main
+321561b4 Remove now unused ExtraCostCombined
+e0ae21d2 WebPMemoryWriterClear: use WebPMemoryWriterInit
+a4183d94 Remove the computation of ExtraCost when comparing histograms
+f2b3f527 Get AVX2 into WebP lossless
+7c70ff7a Clean dsp/lossless includes
+9dd5ae81 Use the full register in PredictorSub13_SSE2
+613be8fc Makefile.vc: add /MP to CFLAGS
+1d86819f Merge changes I1437390a,I10a20de5,I1ac777d1 into main
+743a5f09 enc_neon: enable vld1q_u8_x4 for clang & msvc
+565da148 pngdec.c: add support for 'eXIf' tag
+319860e9 pngdec.c: support ImageMagick app1 exif text data
+815fc1e1 pngdec.c: add missing #ifdef for png_get_iCCP
+980b708e enc_neon: fix build w/aarch64 gcc < 9.4.0
+73b728cb cmake: bump minimum version to 3.16
+6a22b670 Add a function to validate a WebPDecoderConfig
+7ed2b10e Use consistently signed stride types.
+654bfb04 Avoid nullptr arithmetic in VP8BitReaderSetBuffer
+f8f24107 Fix potential "divide by zero" in examples found by coverity
+2af6c034 Merge tag 'v1.5.0'
+a4d7a715 update ChangeLog (tag: v1.5.0, origin/1.5.0)
+c3d85ce4 update NEWS
+ad14e811 tests/fuzzer/*: add missing <string_view> include
+74cd026e fuzz_utils.cc: fix build error w/WEBP_REDUCE_SIZE
+a027aa93 mux_demux_api_fuzzer.cc: fix -Wshadow warning
+25e17c68 update ChangeLog (tag: v1.5.0-rc1)
+aa2684fc update NEWS
+36923846 bump version to 1.5.0
+ceea8ff6 update AUTHORS
+e4f7a9f0 img2webp: add a warning for unused options
+1b4c967f Merge "Properly check the data size against the end of the RIFF chunk" into main
+9e5ecfaf Properly check the data size against the end of the RIFF chunk
+da0d9c7d examples: exit w/failure w/no args
+fcff86c7 {gif,img}2webp: sync -m help w/cwebp
+b76c4a84 man/img2webp.1: sync -m text w/cwebp.1 & gif2webp.1
+30633519 muxread: fix reading of buffers > riff size
+4c85d860 yuv.h: update RGB<->YUV coefficients in comment
+0ab789e0 Merge changes I6dfedfd5,I2376e2dc into main
+03236450 {ios,xcframework}build.sh: fix compilation w/Xcode 16
+61e2cfda rework AddVectorEq_SSE2
+7bda3deb rework AddVector_SSE2
+2ddaaf0a Fix variable names in SharpYuvComputeConversionMatrix
+a3ba6f19 Makefile.vc: fix gif2webp link error
+f999d94f gif2webp: add -sharp_yuv/-near_lossless
+dfdcb7f9 Merge "lossless.h: fix function declaration mismatches" into main (tag: webp-rfc9649)
+78ed6839 fix overread in Intra4Preds_NEON
+d516a68e lossless.h: fix function declaration mismatches
+87406904 Merge "Improve documentation of SharpYuvConversionMatrix." into main
+fdb229ea Merge changes I07a7e36a,Ib29980f7,I2316122d,I2356e314,I32b53dd3, ... into main
+0c3cd9cc Improve documentation of SharpYuvConversionMatrix.
+169dfbf9 disable Intra4Preds_NEON
+2dd5eb98 dsp/yuv*: use WEBP_RESTRICT qualifier
+23bbafbe dsp/upsampling*: use WEBP_RESTRICT qualifier
+35915b38 dsp/rescaler*: use WEBP_RESTRICT qualifier
+a32b436b dsp/lossless*: use WEBP_RESTRICT qualifier
+04d4b4f3 dsp/filters*: use WEBP_RESTRICT qualifier
+b1cb37e6 dsp/enc*: use WEBP_RESTRICT qualifier
+201894ef dsp/dec*: use WEBP_RESTRICT qualifier
+02eac8a7 dsp/cost*: use WEBP_RESTRICT qualifier
+84b118c9 Merge "webp-container-spec: normalize notes & unknown chunk link" into main
+052cf42f webp-container-spec: normalize notes & unknown chunk link
+220ee529 Search for best predictor transform bits
+78619478 Try to reduce the sampling for the entropy image
+14f09ab7 webp-container-spec: reorder chunk size - N text
+a78c5356 Remove a useless malloc for entropy image
+bc491763 Merge "Refactor predictor finding" into main
+34f92238 man/{cwebp,img2webp}.1: rm 'if needed' from -sharp_yuv
+367ca938 Refactor predictor finding
+a582b53b webp-lossless-bitstream-spec: clarify some text
+0fd25d84 Merge "anim_encode.c: fix function ref in comment" into main
+f8882913 anim_encode.c: fix function ref in comment
+40e4ca60 specs_generation.md: update kramdown command line
+57883c78 img2webp: add -exact/-noexact per-frame options
+1c8eba97 img2webp,cosmetics: add missing '.' spacers to help
+2e81017c Convert predictor_enc.c to fixed point
+94de6c7f Merge "Fix fuzztest link errors w/-DBUILD_SHARED_LIBS=1" into main
+51d9832a Fix fuzztest link errors w/-DBUILD_SHARED_LIBS=1
+7bcb36b8 Merge "Fix static overflow warning." into main
+8e0cc14c Fix static overflow warning.
+cea68462 README.md: add security report note
+615e5874 Merge "make VP8LPredictor[01]_C() static" into main
+233e86b9 Merge changes Ie43dc5ef,I94cd8bab into main
+1a29fd2f make VP8LPredictor[01]_C() static
+dd9d3770 Do*Filter_*: remove row & num_rows parameters
+ab451a49 Do*Filter_C: remove dead 'inverse' code paths
+f9a480f7 {TrueMotion,TM16}_NEON: remove zero extension
+04834aca Merge changes I25c30a9e,I0a192fc6,I4cf89575 into main
+39a602af webp-lossless-bitstream-spec: normalize predictor transform ref
+f28c837d Merge "webp-container-spec: align anim pseudocode w/prose" into main
+74be8e22 Fix implicit conversion issues
+0c01db7c Merge "Increase the transform bits if possible." into main
+f2d6dc1e Increase the transform bits if possible.
+caa19e5b update link to issue tracker
+c9dd9bd4 webp-container-spec: align anim pseudocode w/prose
+8a7c8dc6 WASM: Enable VP8L_USE_FAST_LOAD
+f0c53cd9 WASM: don't use USE_GENERIC_TREE
+eef903d0 WASM: Enable 64-bit BITS caching
+6296cc8d iterator_enc: make VP8IteratorReset() static
+fbd93896 histogram_enc: make VP8LGetHistogramSize static
+cc7ff545 cost_enc: make VP8CalculateLevelCosts[] static
+4e2828ba vp8l_dec: make VP8LClear() static
+d742b24a Intra16Preds_NEON: fix truemotion saturation
+c7bb4cb5 Intra4Preds_NEON: fix truemotion saturation
+952a989b Merge "Remove TODO now that log is using fixed point." into main
+dde11574 Remove TODO now that log is using fixed point.
+a1ca153d Fix hidden myerr in my_error_exit
+3bd94202 Merge changes Iff6e47ed,I24c67cd5,Id781e761 into main
+d27d246e Merge "Convert VP8LFastSLog2 to fixed point" into main
+4838611f Disable msg_code use in fuzzing mode
+314a142a Use QuantizeBlock_NEON for VP8EncQuantizeBlockWHT on Arm
+3bfb05e3 Add AArch64 Neon implementation of Intra16Preds
+baa93808 Add AArch64 Neon implementation of Intra4Preds
+41a5e582 Fix errors when compiling code as C++
+fb444b69 Convert VP8LFastSLog2 to fixed point
+c1c89f51 Fix WEBP_NODISCARD comment and C++ version
+66408c2c Switch the histogram_enc.h API to fixed point
+ac1e410d Remove leftover tiff dep
+b78d3957 Disable TIFF on fuzztest.
+cff21a7d Do not build statically on oss-fuzz.
+6853a8e5 Merge "Move more internal fuzzers to public." into main
+9bc09db4 Merge "Convert VP8LFastLog2 to fixed point" into main
+0a9f1c19 Convert VP8LFastLog2 to fixed point
+db0cb9c2 Move more internal fuzzers to public.
+ff2b5b15 Merge "advanced_api_fuzzer.cc: use crop dims in OOM check" into main
+c4af79d0 Put 0 at the end of a palette and do not store it.
+0ec80aef Delete last references to delta palettization
+96d79f84 advanced_api_fuzzer.cc: use crop dims in OOM check
+c35c7e02 Fix huffman fuzzer to not leak.
+f2fe8dec Bump fuzztest dependency.
+9ce982fd Fix fuzz tests to work on oss-fuzz
+3ba8af1a Do not escape quotes anymore in build.sh
+ea0e121b Allow centipede to be used as a fuzzing engine.
+27731afd make VP8I4ModeOffsets & VP8MakeIntra4Preds static
+ddd6245e oss-fuzz/build.sh: use heredoc for script creation
+50074930 oss-fuzz/build.sh,cosmetics: fix indent
+20e92f7d Limit the possible fuzz engines.
+4f200de5 Switch public fuzz tests to fuzztest.
+64186bb3 Add huffman_fuzzer to .gitignore
+0905f61c Move build script from oss-fuzz repo to here.
+e8678758 Fix link to Javascript documentation
+5e5b8f0c Fix SSE2 Transform_AC3 function name
+45129ee0 Revert "Check all the rows."
+ee26766a Check all the rows.
+7ec51c59 Increase the transform bits if possible.
+3cd16fd3 Revert "Increase the transform bits if possible."
+971a03d8 Increase the transform bits if possible.
+1bf198a2 Allow transform_bits to be different during encoding.
+1e462ca8 Define MAX_TRANSFORM_BITS according to the specification.
+64d1ec23 Use (MIN/NUM)_(TRANSFORM/HUFFMAN)_BITS where appropriate
+a90160e1 Refactor histograms in predictors.
+a7aa7525 Fix some function declarations
+68ff4e1e Merge "jpegdec: add a hint for EOF/READ errors" into main
+79e7968a jpegdec: add a hint for EOF/READ errors
+d33455cd man/*: s/BUGS/REPORTING BUGS/
+a67ff735 normalize example exit status
+edc28909 upsampling_{neon,sse41}: fix int sanitizer warning
+3cada4ce ImgIoUtilReadFile: check ftell() return
+dc950585 Merge tag 'v1.4.0'
+845d5476 update ChangeLog (tag: v1.4.0, origin/1.4.0)
 8a6a55bb update NEWS
 cf7c5a5d provide a way to opt-out/override WEBP_NODISCARD
 cc34288a update ChangeLog (tag: v1.4.0-rc1)
--- a/Makefile.vc
+++ b/Makefile.vc
@@ -32,7 +32,7 @@ PLATFORM_LDFLAGS = /SAFESEH
 NOLOGO     = /nologo
 CCNODBG    = cl.exe $(NOLOGO) /O2 /DNDEBUG
 CCDEBUG    = cl.exe $(NOLOGO) /Od /Zi /D_DEBUG /RTC1
-CFLAGS     = /I. /Isrc $(NOLOGO) /W3 /EHsc /c
+CFLAGS     = /I. /Isrc $(NOLOGO) /MP /W3 /EHsc /c
 CFLAGS     = $(CFLAGS) /DWIN32 /D_CRT_SECURE_NO_WARNINGS /DWIN32_LEAN_AND_MEAN
 LDFLAGS    = /LARGEADDRESSAWARE /MANIFEST:EMBED /NXCOMPAT /DYNAMICBASE
 LDFLAGS    = $(LDFLAGS) $(PLATFORM_LDFLAGS)
@@ -231,6 +231,7 @@ DSP_DEC_OBJS = \
    $(DIROBJ)\dsp\lossless_neon.obj \
    $(DIROBJ)\dsp\lossless_sse2.obj \
    $(DIROBJ)\dsp\lossless_sse41.obj \
+    $(DIROBJ)\dsp\lossless_avx2.obj \
    $(DIROBJ)\dsp\rescaler.obj \
    $(DIROBJ)\dsp\rescaler_mips32.obj \
    $(DIROBJ)\dsp\rescaler_mips_dsp_r2.obj \
@@ -270,6 +271,7 @@ DSP_ENC_OBJS = \
    $(DIROBJ)\dsp\lossless_enc_neon.obj \
    $(DIROBJ)\dsp\lossless_enc_sse2.obj \
    $(DIROBJ)\dsp\lossless_enc_sse41.obj \
+    $(DIROBJ)\dsp\lossless_enc_avx2.obj \
    $(DIROBJ)\dsp\ssim.obj \
    $(DIROBJ)\dsp\ssim_sse2.obj \

@@ -393,7 +395,7 @@ $(DIRBIN)\dwebp.exe: $(IMAGEIO_UTIL_OBJS)
 $(DIRBIN)\dwebp.exe: $(LIBWEBPDEMUX)
 $(DIRBIN)\gif2webp.exe: $(DIROBJ)\examples\gif2webp.obj $(EX_GIF_DEC_OBJS)
 $(DIRBIN)\gif2webp.exe: $(EX_UTIL_OBJS) $(IMAGEIO_UTIL_OBJS) $(LIBWEBPMUX)
-$(DIRBIN)\gif2webp.exe: $(LIBWEBP)
+$(DIRBIN)\gif2webp.exe: $(LIBWEBP) $(LIBSHARPYUV)
 $(DIRBIN)\vwebp.exe: $(DIROBJ)\examples\vwebp.obj $(EX_UTIL_OBJS)
 $(DIRBIN)\vwebp.exe: $(IMAGEIO_UTIL_OBJS) $(LIBWEBPDEMUX) $(LIBWEBP)
 $(DIRBIN)\vwebp_sdl.exe: $(DIROBJ)\extras\vwebp_sdl.obj
--- a/35
+++ b/35
@@ -1,3 +1,38 @@
+- 6/30/2025 version 1.6.0
+  This is a binary compatible release.
+  API changes:
+    - libwebp: WebPValidateDecoderConfig
+  * additional x86 (AVX2, SSE2), general optimizations and compression
+    improvements for lossless
+  * `-mt` returns same results as single-threaded lossless (regressed in
+    1.5.0, #426506716)
+  * miscellaneous warning, bug & build fixes (#393104377, #397130631,
+    #398288323, #398066379, #427503509)
+  Tool updates:
+    * cwebp can restrict the use of `-resize` with `-resize_mode` (#405437935)
+
+- 12/19/2024 version 1.5.0
+  This is a binary compatible release.
+  API changes:
+    - `cross_color_transform_bits` added to WebPAuxStats
+  * minor lossless encoder speed and compression improvements
+  * lossless encoding does not use floats anymore
+  * additional Arm optimizations for lossy & lossless + general code generation
+    improvements
+  * improvements to WASM performance (#643)
+  * improvements and corrections in webp-container-spec.txt and
+    webp-lossless-bitstream-spec.txt (#646, #355607636)
+  * further security related hardening and increased fuzzing coverage w/fuzztest
+    (oss-fuzz: #382816119, #70112, #70102, #69873, #69825, #69508, #69208)
+  * miscellaneous warning, bug & build fixes (#499, #562, #381372617,
+    #381109771, #42340561, #375011696, #372109644, chromium: #334120888)
+  Tool updates:
+    * gif2webp: add -sharp_yuv & -near_lossless
+    * img2webp: add -exact & -noexact
+    * exit codes normalized; running an example program with no
+      arguments will output its help and exit with an error (#42340557,
+      #381372617)
+
 - 4/12/2024: version 1.4.0
  This is a binary compatible release.
  * API changes:
--- a/README.md
+++ b/README.md
@@ -7,7 +7,7 @@
      \__\__/\____/\_____/__/ ____  ___
            / _/ /    \    \ /  _ \/ _/
           /  \_/   / /   \ \   __/  \__
-           \____/____/\_____/_____/____/v1.4.0
+           \____/____/\_____/_____/____/v1.6.0
 ```

 WebP codec is a library to encode and decode images in WebP format. This package
--- a/cmake/config.h.in
+++ b/cmake/config.h.in
@@ -94,6 +94,9 @@
 /* Set to 1 if SSE4.1 is supported */
 #cmakedefine WEBP_HAVE_SSE41 1

+/* Set to 1 if AVX2 is supported */
+#cmakedefine WEBP_HAVE_AVX2 1
+
 /* Set to 1 if TIFF library is installed */
 #cmakedefine WEBP_HAVE_TIFF 1

@@ -105,12 +108,4 @@

 /* Define WORDS_BIGENDIAN to 1 if your processor stores words with the most
   significant byte first (like Motorola and SPARC, unlike Intel). */
-#if defined AC_APPLE_UNIVERSAL_BUILD
-# if defined __BIG_ENDIAN__
-#  define WORDS_BIGENDIAN 1
-# endif
-#else
-# ifndef WORDS_BIGENDIAN
-#  undef WORDS_BIGENDIAN
-# endif
-#endif
+#cmakedefine WORDS_BIGENDIAN 1
--- a/cmake/cpu.cmake
+++ b/cmake/cpu.cmake
@@ -18,11 +18,36 @@ function(webp_check_compiler_flag WEBP_SIMD_FLAG ENABLE_SIMD)
  unset(WEBP_HAVE_FLAG_${WEBP_SIMD_FLAG} CACHE)
  cmake_push_check_state()
  set(CMAKE_REQUIRED_INCLUDES ${CMAKE_CURRENT_SOURCE_DIR})
+
+  # If building a universal binary on macOS, we need to check if one of the
+  # architectures supports the SIMD flag.
+  set(OSX_CHECK "")
+  if(APPLE AND CMAKE_OSX_ARCHITECTURES)
+    list(LENGTH CMAKE_OSX_ARCHITECTURES ARCH_COUNT)
+    if(ARCH_COUNT EQUAL 2)
+      set(OSX_CHECK "defined(WEBP_CAN_HAVE_${WEBP_SIMD_FLAG}) &&")
+    endif()
+  endif()
+
  check_c_source_compiles(
    "
      #include \"${CMAKE_CURRENT_LIST_DIR}/../src/dsp/dsp.h\"
+      #if defined(__APPLE__)
+      #if defined(__x86_64__)
+      #define WEBP_CAN_HAVE_SSE2
+      #define WEBP_CAN_HAVE_SSE41
+      #define WEBP_CAN_HAVE_AVX2
+      #elif defined(__aarch64__)
+      #define WEBP_CAN_HAVE_NEON
+      #endif
+      // MIPS intrinsics are not supported on macOS, but we have to define them
+      // so that the check happens.
+      #define WEBP_CAN_HAVE_MIPS32
+      #define WEBP_CAN_HAVE_MIPS_DSP_R2
+      #define WEBP_CAN_HAVE_MSA
+      #endif
      int main(void) {
-        #if !defined(WEBP_USE_${WEBP_SIMD_FLAG})
+        #if ${OSX_CHECK} !defined(WEBP_USE_${WEBP_SIMD_FLAG})
        this is not valid code
        #endif
        return 0;
@@ -38,9 +63,9 @@ function(webp_check_compiler_flag WEBP_SIMD_FLAG ENABLE_SIMD)
 endfunction()

 # those are included in the names of WEBP_USE_* in c++ code.
-set(WEBP_SIMD_FLAGS "SSE41;SSE2;MIPS32;MIPS_DSP_R2;NEON;MSA")
+set(WEBP_SIMD_FLAGS "AVX2;SSE41;SSE2;MIPS32;MIPS_DSP_R2;NEON;MSA")
 set(WEBP_SIMD_FILE_EXTENSIONS
-    "_sse41.c;_sse2.c;_mips32.c;_mips_dsp_r2.c;_neon.c;_msa.c")
+    "_avx2.c;_sse41.c;_sse2.c;_mips32.c;_mips_dsp_r2.c;_neon.c;_msa.c")
 if(MSVC AND CMAKE_C_COMPILER_ID STREQUAL "MSVC")
  # With at least Visual Studio 12 (2013)+ /arch is not necessary to build SSE2
  # or SSE4 code unless a lesser /arch is forced. MSVC does not have a SSE4
@@ -50,12 +75,14 @@ if(MSVC AND CMAKE_C_COMPILER_ID STREQUAL "MSVC")
  if(MSVC_VERSION GREATER_EQUAL 1800 AND NOT CMAKE_C_FLAGS MATCHES "/arch:")
    set(SIMD_ENABLE_FLAGS)
  else()
-    set(SIMD_ENABLE_FLAGS "/arch:AVX;/arch:SSE2;;;;")
+    set(SIMD_ENABLE_FLAGS "/arch:AVX2;/arch:AVX;/arch:SSE2;;;;")
  endif()
  set(SIMD_DISABLE_FLAGS)
 else()
-  set(SIMD_ENABLE_FLAGS "-msse4.1;-msse2;-mips32;-mdspr2;-mfpu=neon;-mmsa")
-  set(SIMD_DISABLE_FLAGS "-mno-sse4.1;-mno-sse2;;-mno-dspr2;;-mno-msa")
+  set(SIMD_ENABLE_FLAGS
+      "-mavx2;-msse4.1;-msse2;-mips32;-mdspr2;-mfpu=neon;-mmsa")
+  set(SIMD_DISABLE_FLAGS
+      "-mno-avx2;-mno-sse4.1;-mno-sse2;;-mno-dspr2;;-mno-msa")
 endif()

 set(WEBP_SIMD_FILES_TO_INCLUDE)
--- a/configure.ac
+++ b/configure.ac
@@ -1,4 +1,4 @@
-AC_INIT([libwebp], [1.4.0],
+AC_INIT([libwebp], [1.6.0],
        [https://issues.webmproject.org],,
        [https://developers.google.com/speed/webp])
 AC_CANONICAL_HOST
@@ -114,6 +114,7 @@ TEST_AND_ADD_CFLAGS([AM_CFLAGS], [-Wmissing-declarations])
 TEST_AND_ADD_CFLAGS([AM_CFLAGS], [-Wmissing-prototypes])
 TEST_AND_ADD_CFLAGS([AM_CFLAGS], [-Wold-style-definition])
 TEST_AND_ADD_CFLAGS([AM_CFLAGS], [-Wparentheses-equality])
+TEST_AND_ADD_CFLAGS([AM_CFLAGS], [-Wself-assign])
 TEST_AND_ADD_CFLAGS([AM_CFLAGS], [-Wshadow])
 TEST_AND_ADD_CFLAGS([AM_CFLAGS], [-Wshorten-64-to-32])
 TEST_AND_ADD_CFLAGS([AM_CFLAGS], [-Wstrict-prototypes])
@@ -161,6 +162,25 @@ AS_IF([test "$GCC" = "yes" ], [
 AC_SUBST([AM_CFLAGS])

 dnl === Check for machine specific flags
+AC_ARG_ENABLE([avx2],
+              AS_HELP_STRING([--disable-avx2],
+                             [Disable detection of AVX2 support
+                              @<:@default=auto@:>@]))
+
+AS_IF([test "x$enable_avx2" != "xno" -a "x$enable_sse4_1" != "xno"
+      -a "x$enable_sse2" != "xno"], [
+  AVX2_FLAGS="$INTRINSICS_CFLAGS $AVX2_FLAGS"
+  TEST_AND_ADD_CFLAGS([AVX2_FLAGS], [-mavx2])
+  AS_IF([test -n "$AVX2_FLAGS"], [
+    SAVED_CFLAGS=$CFLAGS
+    CFLAGS="$CFLAGS $AVX2_FLAGS"
+    AC_CHECK_HEADER([immintrin.h],
+                    [AC_DEFINE(WEBP_HAVE_AVX2, [1],
+                     [Set to 1 if AVX2 is supported])],
+                    [AVX2_FLAGS=""])
+    CFLAGS=$SAVED_CFLAGS])
+  AC_SUBST([AVX2_FLAGS])])
+
 AC_ARG_ENABLE([sse4.1],
              AS_HELP_STRING([--disable-sse4.1],
                             [Disable detection of SSE4.1 support
--- a/doc/api.md
+++ b/doc/api.md
@@ -36,6 +36,12 @@ size_t WebPEncodeLosslessBGRA(const uint8_t* bgra, int width, int height,
 Of course in this case, no quality factor is needed since the compression occurs
 without loss of the input values, at the expense of larger output sizes.

+Note these functions, like the lossy versions, use the library's default
+settings. For lossless this means 'exact' is disabled. RGB values in fully
+transparent areas (that is, areas with alpha values equal to `0`) will be
+modified to improve compression. To avoid this, use `WebPEncode()` and set
+`WebPConfig::exact` to `1`.
+
 ### Advanced encoding API

 A more advanced API is based on the WebPConfig and WebPPicture structures.
@@ -202,6 +208,7 @@ config.output.u.RGBA.rgba = (uint8_t*) memory_buffer;
 config.output.u.RGBA.stride = scanline_stride;
 config.output.u.RGBA.size = total_size_of_the_memory_buffer;
 config.output.is_external_memory = 1;
+config_error = WebPValidateDecoderConfig(&config);  // not mandatory, but useful

 // E) Decode the WebP image. There are two variants w.r.t decoding image.
 // The first one (E.1) decodes the full image and the second one (E.2) is
--- a/doc/specs_generation.md
+++ b/doc/specs_generation.md
@@ -17,10 +17,11 @@ rubygems will install automatically. The following will apply inline CSS
 styling; an external stylesheet is not needed.

 ```shell
-$ kramdown doc/webp-lossless-bitstream-spec.txt --template \
-  doc/template.html --coderay-css style --coderay-line-numbers ' ' \
-  --coderay-default-lang c > \
-  doc/output/webp-lossless-bitstream-spec.html
+$ kramdown doc/webp-lossless-bitstream-spec.txt \
+  --template doc/template.html \
+  -x syntax-coderay --syntax-highlighter coderay \
+  --syntax-highlighter-opts "{default_lang: c, line_numbers: , css: style}" \
+  > doc/output/webp-lossless-bitstream-spec.html
 ```

 Optimally, use kramdown 0.13.7 or newer if syntax highlighting desired.
--- a/doc/tools.md
+++ b/doc/tools.md
@@ -65,6 +65,7 @@ Options:
                         (default: 0 100)
 -crop <x> <y> <w> <h> .. crop picture with the given rectangle
 -resize <w> <h> ........ resize picture (*after* any cropping)
+-resize_mode <string> .. one of: up_only, down_only, always (default)
 -mt .................... use multi-threading if available
 -low_memory ............ reduce memory usage (slower encoding)
 -map <int> ............. print map of extra info
@@ -321,10 +322,13 @@ Per-frame options (only used for subsequent images input):

 ```
 -d <int> ............. frame duration in ms (default: 100)
-lossless  ........... use lossless mode (default)
-lossy ... ........... use lossy mode
+-lossless ............ use lossless mode (default)
+-lossy ............... use lossy mode
 -q <float> ........... quality
-m <int> ............. method to use
+-m <int> ............. compression method (0=fast, 6=slowest), default=4
+-exact, -noexact ..... preserve or alter RGB values in transparent area
+                       (default: -noexact, may cause artifacts
+                                 with lossy animations)
 ```

 example: `img2webp -loop 2 in0.png -lossy in1.jpg -d 80 in2.tiff -o out.webp`
@@ -351,8 +355,12 @@ Options:
 -lossy ................. encode image using lossy compression
 -mixed ................. for each frame in the image, pick lossy
                         or lossless compression heuristically
+-near_lossless <int> ... use near-lossless image preprocessing
+                         (0..100=off), default=100
+-sharp_yuv ............. use sharper (and slower) RGB->YUV conversion
+                         (lossy only)
 -q <float> ............. quality factor (0:small..100:big)
-m <int> ............... compression method (0=fast, 6=slowest)
+-m <int> ............... compression method (0=fast, 6=slowest), default=4
 -min_size .............. minimize output size (default:off)
                         lossless compression by default; can be
                         combined with -q, -m, -lossy or -mixed
--- a/doc/webp-container-spec.txt
+++ b/doc/webp-container-spec.txt
@@ -131,7 +131,7 @@ Chunk Payload: _Chunk Size_ bytes
 : The data payload. If _Chunk Size_ is odd, a single padding byte -- which MUST
  be `0` to conform with RIFF -- is added.

-**Note:** RIFF has a convention that all-uppercase chunk FourCCs are standard
+**Note**: RIFF has a convention that all-uppercase chunk FourCCs are standard
 chunks that apply to any RIFF file format, while FourCCs specific to a file
 format are all lowercase. WebP does not follow this convention.

@@ -220,7 +220,7 @@ use another conversion method, but visual results may differ among decoders.
 Simple File Format (Lossless)
 -----------------------------

-**Note:** Older readers may not support files using the lossless format.
+**Note**: Older readers may not support files using the lossless format.

 This layout SHOULD be used if the image requires _lossless_ encoding (with an
 optional transparency channel) and does not require advanced features provided
@@ -262,7 +262,7 @@ and height of the canvas.
 Extended File Format
 --------------------

-**Note:** Older readers may not support files using the extended format.
+**Note**: Older readers may not support files using the extended format.

 An extended format file consists of:

@@ -290,12 +290,12 @@ up of:
 For an _animated image_, the _image data_ consists of multiple frames. More
 details about frames can be found in the [Animation](#animation) section.

-All chunks necessary for reconstruction and color correction, that is 'VP8X',
-'ICCP', 'ANIM', 'ANMF', 'ALPH', 'VP8 ' and 'VP8L', MUST appear in the order
+All chunks necessary for reconstruction and color correction, that is, 'VP8X',
+'ICCP', 'ANIM', 'ANMF', 'ALPH', 'VP8 ', and 'VP8L', MUST appear in the order
 described earlier. Readers SHOULD fail when chunks necessary for reconstruction
 and color correction are out of order.

-[Metadata](#metadata) and [unknown](#unknown-chunks) chunks MAY appear out of
+[Metadata](#metadata) and [unknown chunks](#unknown-chunks) MAY appear out of
 order.

 **Rationale:** The chunks necessary for reconstruction should appear first in
@@ -401,7 +401,7 @@ Background Color: 32 bits (_uint32_)
  around the frames, as well as the transparent pixels of the first frame.
  The background color is also used when the Disposal method is `1`.

-**Note**:
+**Notes**:

  * The background color MAY contain a non-opaque alpha value, even if the
    _Alpha_ flag in the ['VP8X' Chunk](#extended_header) is unset.
@@ -525,7 +525,7 @@ Disposal method (D): 1 bit
    not present, standard RGB (sRGB) is to be assumed. (Note that sRGB also
    needs to be linearized due to a gamma of ~2.2.)

-Frame Data: _Chunk Size_ - `16` bytes
+Frame Data: _Chunk Size_ bytes - `16`

 : Consists of:

@@ -616,7 +616,7 @@ Compression method (C): 2 bits
    * `0`: No compression.
    * `1`: Compressed using the WebP lossless format.

-Alpha bitstream: _Chunk Size_ - `1` bytes
+Alpha bitstream: _Chunk Size_ bytes - `1`

 : Encoded alpha bitstream.

--- a/doc/webp-lossless-bitstream-spec.txt
+++ b/doc/webp-lossless-bitstream-spec.txt
@@ -436,8 +436,8 @@ should be interpreted as an 8-bit two's complement number (that is: uint8 range

 The multiplication is to be done using more precision (with at least 16-bit
 precision). The sign extension property of the shift operation does not matter
-here; only the lowest 8 bits are used from the result, and there the sign
-extension shifting and unsigned shifting are consistent with each other.
+here; only the lowest 8 bits are used from the result, and in these bits, the
+sign extension shifting and unsigned shifting are consistent with each other.

 Now, we describe the contents of color transform data so that decoding can apply
 the inverse color transform and recover the original red and blue values. The
@@ -613,8 +613,8 @@ We use image data in five different roles:
  1. Color transform image: Created by `ColorTransformElement` values
     (defined in ["Color Transform"](#color-transform)) for different blocks of
     the image.
-  1. Color indexing image: An array of size `color_table_size` (up to 256 ARGB
-     values) storing the metadata for the color indexing transform (see
+  1. Color indexing image: An array of the size of `color_table_size` (up to
+     256 ARGB values) that stores metadata for the color indexing transform (see
     ["Color Indexing Transform"](#color-indexing-transform)).

 ### 5.2 Encoding of Image Data
--- a/examples/Makefile.am
+++ b/examples/Makefile.am
@@ -67,7 +67,7 @@ dwebp_LDADD += ../src/libwebp.la
 dwebp_LDADD +=$(PNG_LIBS) $(JPEG_LIBS)

 gif2webp_SOURCES = gif2webp.c gifdec.c gifdec.h
-gif2webp_CPPFLAGS = $(AM_CPPFLAGS) $(GIF_INCLUDES)
+gif2webp_CPPFLAGS = $(AM_CPPFLAGS) $(GIF_INCLUDES) -I$(top_srcdir)
 gif2webp_LDADD  =
 gif2webp_LDADD += libexample_util.la
 gif2webp_LDADD += ../imageio/libimageio_util.la
--- a/examples/anim_diff.c
+++ b/examples/anim_diff.c
@@ -22,6 +22,7 @@
 #include "./anim_util.h"
 #include "./example_util.h"
 #include "./unicode.h"
+#include "webp/types.h"

 #if defined(_MSC_VER) && _MSC_VER < 1900
 #define snprintf _snprintf
@@ -56,8 +57,8 @@ static WEBP_INLINE int PixelsAreSimilar(uint32_t src, uint32_t dst,
 }

 static int FramesAreSimilar(const uint8_t* const rgba1,
-                            const uint8_t* const rgba2,
-                            int width, int height, int max_allowed_diff) {
+                            const uint8_t* const rgba2, int width, int height,
+                            int max_allowed_diff) {
  int i, j;
  assert(max_allowed_diff > 0);
  for (j = 0; j < height; ++j) {
@@ -119,8 +120,7 @@ static int CompareBackgroundColor(uint32_t bg1, uint32_t bg2, int premultiply) {
    if (alpha1 == 0 && alpha2 == 0) return 1;
  }
  if (bg1 != bg2) {
-    fprintf(stderr, "Background color mismatch: 0x%08x vs 0x%08x\n",
-            bg1, bg2);
+    fprintf(stderr, "Background color mismatch: 0x%08x vs 0x%08x\n", bg1, bg2);
    return 0;
  }
  return 1;
@@ -130,18 +130,17 @@ static int CompareBackgroundColor(uint32_t bg1, uint32_t bg2, int premultiply) {
 // is OK for other aspects like offsets, dispose/blend method to vary.
 static int CompareAnimatedImagePair(const AnimatedImage* const img1,
                                    const AnimatedImage* const img2,
-                                    int premultiply,
-                                    double min_psnr) {
+                                    int premultiply, double min_psnr) {
  int ok = 1;
  const int is_multi_frame_image = (img1->num_frames > 1);
  uint32_t i;

-  ok = CompareValues(img1->canvas_width, img2->canvas_width,
-                     "Canvas width mismatch") && ok;
-  ok = CompareValues(img1->canvas_height, img2->canvas_height,
-                     "Canvas height mismatch") && ok;
-  ok = CompareValues(img1->num_frames, img2->num_frames,
-                     "Frame count mismatch") && ok;
+  ok &= CompareValues(img1->canvas_width, img2->canvas_width,
+                      "Canvas width mismatch");
+  ok &= CompareValues(img1->canvas_height, img2->canvas_height,
+                      "Canvas height mismatch");
+  ok &=
+      CompareValues(img1->num_frames, img2->num_frames, "Frame count mismatch");
  if (!ok) return 0;  // These are fatal failures, can't proceed.

  if (is_multi_frame_image) {  // Checks relevant for multi-frame images only.
@@ -154,11 +153,10 @@ static int CompareAnimatedImagePair(const AnimatedImage* const img1,
         img2->format == ANIM_GIF && img2->loop_count == 65536)) {
      max_loop_count_workaround = 1;
    }
-    ok = (max_loop_count_workaround ||
-          CompareValues(img1->loop_count, img2->loop_count,
-                        "Loop count mismatch")) && ok;
-    ok = CompareBackgroundColor(img1->bgcolor, img2->bgcolor,
-                                premultiply) && ok;
+    ok &= (max_loop_count_workaround ||
+           CompareValues(img1->loop_count, img2->loop_count,
+                         "Loop count mismatch"));
+    ok &= CompareBackgroundColor(img1->bgcolor, img2->bgcolor, premultiply);
  }

  for (i = 0; i < img1->num_frames; ++i) {
@@ -178,8 +176,8 @@ static int CompareAnimatedImagePair(const AnimatedImage* const img1,
                   premultiply, &max_diff, &psnr);
    if (min_psnr > 0.) {
      if (psnr < min_psnr) {
-        fprintf(stderr, "Frame #%d, psnr = %.2lf (min_psnr = %f)\n", i,
-                psnr, min_psnr);
+        fprintf(stderr, "Frame #%d, psnr = %.2lf (min_psnr = %f)\n", i, psnr,
+                min_psnr);
        ok = 0;
      }
    } else {
@@ -199,9 +197,10 @@ static void Help(void) {
  printf("  -min_psnr <float> ... minimum per-frame PSNR\n");
  printf("  -raw_comparison ..... if this flag is not used, RGB is\n");
  printf("                        premultiplied before comparison\n");
-  printf("  -max_diff <int> ..... maximum allowed difference per channel\n"
-         "                        between corresponding pixels in subsequent\n"
-         "                        frames\n");
+  printf(
+      "  -max_diff <int> ..... maximum allowed difference per channel\n"
+      "                        between corresponding pixels in subsequent\n"
+      "                        frames\n");
  printf("  -h .................. this help\n");
  printf("  -version ............ print version number and exit\n");
 }
@@ -217,7 +216,7 @@ int main(int argc, const char* argv[]) {
  int premultiply = 1;
  int max_diff = 0;
  int i, c;
-  const char* files[2] = { NULL, NULL };
+  const char* files[2] = {NULL, NULL};
  AnimatedImage images[2];

  INIT_WARGV(argc, argv);
@@ -253,9 +252,8 @@ int main(int argc, const char* argv[]) {
      GetAnimatedImageVersions(&dec_version, &demux_version);
      printf("WebP Decoder version: %d.%d.%d\nWebP Demux version: %d.%d.%d\n",
             (dec_version >> 16) & 0xff, (dec_version >> 8) & 0xff,
-             (dec_version >> 0) & 0xff,
-             (demux_version >> 16) & 0xff, (demux_version >> 8) & 0xff,
-             (demux_version >> 0) & 0xff);
+             (dec_version >> 0) & 0xff, (demux_version >> 16) & 0xff,
+             (demux_version >> 8) & 0xff, (demux_version >> 0) & 0xff);
      FREE_WARGV_AND_RETURN(0);
    } else {
      if (!got_input1) {
@@ -278,7 +276,6 @@ int main(int argc, const char* argv[]) {
    FREE_WARGV_AND_RETURN(return_code);
  }

-
  if (!got_input2) {
    Help();
    FREE_WARGV_AND_RETURN(return_code);
@@ -301,8 +298,8 @@ int main(int argc, const char* argv[]) {
    }
  }

-  if (!CompareAnimatedImagePair(&images[0], &images[1],
-                                premultiply, min_psnr)) {
+  if (!CompareAnimatedImagePair(&images[0], &images[1], premultiply,
+                                min_psnr)) {
    WFPRINTF(stderr, "\nFiles %s and %s differ.\n", (const W_CHAR*)files[0],
             (const W_CHAR*)files[1]);
    return_code = 1;
@@ -311,7 +308,7 @@ int main(int argc, const char* argv[]) {
            (const W_CHAR*)files[1]);
    return_code = 0;
  }
- End:
+End:
  ClearAnimatedImage(&images[0]);
  ClearAnimatedImage(&images[1]);
  FREE_WARGV_AND_RETURN(return_code);
--- a/examples/anim_dump.c
+++ b/examples/anim_dump.c
@@ -15,10 +15,11 @@
 #include <stdlib.h>
 #include <string.h>  // for 'strcmp'.

-#include "./anim_util.h"
-#include "webp/decode.h"
 #include "../imageio/image_enc.h"
+#include "./anim_util.h"
 #include "./unicode.h"
+#include "webp/decode.h"
+#include "webp/types.h"

 #if defined(_MSC_VER) && _MSC_VER < 1900
 #define snprintf _snprintf
@@ -28,8 +29,9 @@ static void Help(void) {
  printf("Usage: anim_dump [options] files...\n");
  printf("\nOptions:\n");
  printf("  -folder <string> .... dump folder (default: '.')\n");
-  printf("  -prefix <string> .... prefix for dumped frames "
-                                  "(default: 'dump_')\n");
+  printf(
+      "  -prefix <string> .... prefix for dumped frames "
+      "(default: 'dump_')\n");
  printf("  -tiff ............... save frames as TIFF\n");
  printf("  -pam ................ save frames as PAM\n");
  printf("  -h .................. this help\n");
@@ -81,17 +83,16 @@ int main(int argc, const char* argv[]) {
      GetAnimatedImageVersions(&dec_version, &demux_version);
      printf("WebP Decoder version: %d.%d.%d\nWebP Demux version: %d.%d.%d\n",
             (dec_version >> 16) & 0xff, (dec_version >> 8) & 0xff,
-             (dec_version >> 0) & 0xff,
-             (demux_version >> 16) & 0xff, (demux_version >> 8) & 0xff,
-             (demux_version >> 0) & 0xff);
+             (dec_version >> 0) & 0xff, (demux_version >> 16) & 0xff,
+             (demux_version >> 8) & 0xff, (demux_version >> 0) & 0xff);
      FREE_WARGV_AND_RETURN(EXIT_SUCCESS);
    } else {
      uint32_t i;
      AnimatedImage image;
      const W_CHAR* const file = GET_WARGV(argv, c);
      memset(&image, 0, sizeof(image));
-      WPRINTF("Decoding file: %s as %s/%sxxxx.%s\n",
-              file, dump_folder, prefix, suffix);
+      WPRINTF("Decoding file: %s as %s/%sxxxx.%s\n", file, dump_folder, prefix,
+              suffix);
      if (!ReadAnimatedImage((const char*)file, &image, 0, NULL)) {
        WFPRINTF(stderr, "Error decoding file: %s\n Aborting.\n", file);
        error = 1;
@@ -112,8 +113,8 @@ int main(int argc, const char* argv[]) {
        buffer.u.RGBA.rgba = image.frames[i].rgba;
        buffer.u.RGBA.stride = buffer.width * sizeof(uint32_t);
        buffer.u.RGBA.size = buffer.u.RGBA.stride * buffer.height;
-        WSNPRINTF(out_file, sizeof(out_file), "%s/%s%.4d.%s",
-                  dump_folder, prefix, i, suffix);
+        WSNPRINTF(out_file, sizeof(out_file), "%s/%s%.4d.%s", dump_folder,
+                  prefix, i, suffix);
        if (!WebPSaveImage(&buffer, format, (const char*)out_file)) {
          WFPRINTF(stderr, "Error while saving image '%s'\n", out_file);
          error = 1;
--- a/examples/anim_util.c
+++ b/examples/anim_util.c
@@ -19,13 +19,16 @@
 #if defined(WEBP_HAVE_GIF)
 #include <gif_lib.h>
 #endif
-#include "webp/format_constants.h"
-#include "webp/decode.h"
-#include "webp/demux.h"
+
 #include "../imageio/imageio_util.h"
 #include "./gifdec.h"
 #include "./unicode.h"
 #include "./unicode_gif.h"
+#include "webp/decode.h"
+#include "webp/demux.h"
+#include "webp/format_constants.h"
+#include "webp/mux_types.h"
+#include "webp/types.h"

 #if defined(_MSC_VER) && _MSC_VER < 1900
 #define snprintf _snprintf
@@ -38,11 +41,11 @@ static const int kNumChannels = 4;

 #if defined(WEBP_HAVE_GIF)
 // Returns true if the frame covers the full canvas.
-static int IsFullFrame(int width, int height,
-                       int canvas_width, int canvas_height) {
+static int IsFullFrame(int width, int height, int canvas_width,
+                       int canvas_height) {
  return (width == canvas_width && height == canvas_height);
 }
-#endif // WEBP_HAVE_GIF
+#endif  // WEBP_HAVE_GIF

 static int CheckSizeForOverflow(uint64_t size) {
  return (size == (size_t)size);
@@ -92,8 +95,8 @@ void ClearAnimatedImage(AnimatedImage* const image) {

 #if defined(WEBP_HAVE_GIF)
 // Clear the canvas to transparent.
-static void ZeroFillCanvas(uint8_t* rgba,
-                           uint32_t canvas_width, uint32_t canvas_height) {
+static void ZeroFillCanvas(uint8_t* rgba, uint32_t canvas_width,
+                           uint32_t canvas_height) {
  memset(rgba, 0, canvas_width * kNumChannels * canvas_height);
 }

@@ -110,16 +113,16 @@ static void ZeroFillFrameRect(uint8_t* rgba, int rgba_stride, int x_offset,
 }

 // Copy width * height pixels from 'src' to 'dst'.
-static void CopyCanvas(const uint8_t* src, uint8_t* dst,
-                       uint32_t width, uint32_t height) {
+static void CopyCanvas(const uint8_t* src, uint8_t* dst, uint32_t width,
+                       uint32_t height) {
  assert(src != NULL && dst != NULL);
  memcpy(dst, src, width * kNumChannels * height);
 }

 // Copy pixels in the given rectangle from 'src' to 'dst' honoring the 'stride'.
 static void CopyFrameRectangle(const uint8_t* src, uint8_t* dst, int stride,
-                               int x_offset, int y_offset,
-                               int width, int height) {
+                               int x_offset, int y_offset, int width,
+                               int height) {
  int j;
  const int width_in_bytes = width * kNumChannels;
  const size_t offset = y_offset * stride + x_offset * kNumChannels;
@@ -132,11 +135,11 @@ static void CopyFrameRectangle(const uint8_t* src, uint8_t* dst, int stride,
    dst += stride;
  }
 }
-#endif // WEBP_HAVE_GIF
+#endif  // WEBP_HAVE_GIF

 // Canonicalize all transparent pixels to transparent black to aid comparison.
-static void CleanupTransparentPixels(uint32_t* rgba,
-                                     uint32_t width, uint32_t height) {
+static void CleanupTransparentPixels(uint32_t* rgba, uint32_t width,
+                                     uint32_t height) {
  const uint32_t* const rgba_end = rgba + width * height;
  while (rgba < rgba_end) {
    const uint8_t alpha = (*rgba >> 24) & 0xff;
@@ -149,8 +152,8 @@ static void CleanupTransparentPixels(uint32_t* rgba,

 // Dump frame to a PAM file. Returns true on success.
 static int DumpFrame(const char filename[], const char dump_folder[],
-                     uint32_t frame_num, const uint8_t rgba[],
-                     int canvas_width, int canvas_height) {
+                     uint32_t frame_num, const uint8_t rgba[], int canvas_width,
+                     int canvas_height) {
  int ok = 0;
  size_t max_len;
  int y;
@@ -163,8 +166,8 @@ static int DumpFrame(const char filename[], const char dump_folder[],

  base_name = WSTRRCHR(filename, '/');
  base_name = (base_name == NULL) ? (const W_CHAR*)filename : base_name + 1;
-  max_len = WSTRLEN(dump_folder) + 1 + WSTRLEN(base_name)
-          + strlen("_frame_") + strlen(".pam") + 8;
+  max_len = WSTRLEN(dump_folder) + 1 + WSTRLEN(base_name) + strlen("_frame_") +
+            strlen(".pam") + 8;
  file_name = (W_CHAR*)WebPMalloc(max_len * sizeof(*file_name));
  if (file_name == NULL) goto End;

@@ -180,7 +183,8 @@ static int DumpFrame(const char filename[], const char dump_folder[],
    ok = 0;
    goto End;
  }
-  if (fprintf(f, "P7\nWIDTH %d\nHEIGHT %d\n"
+  if (fprintf(f,
+              "P7\nWIDTH %d\nHEIGHT %d\n"
              "DEPTH 4\nMAXVAL 255\nTUPLTYPE RGB_ALPHA\nENDHDR\n",
              canvas_width, canvas_height) < 0) {
    WFPRINTF(stderr, "Write error for file %s\n", file_name);
@@ -195,7 +199,7 @@ static int DumpFrame(const char filename[], const char dump_folder[],
    row += canvas_width * kNumChannels;
  }
  ok = 1;
- End:
+End:
  if (f != NULL) fclose(f);
  WebPFree(file_name);
  return ok;
@@ -263,8 +267,8 @@ static int ReadAnimatedWebP(const char filename[],
           image->canvas_width * kNumChannels * image->canvas_height);

    // Needed only because we may want to compare with GIF later.
-    CleanupTransparentPixels((uint32_t*)curr_rgba,
-                             image->canvas_width, image->canvas_height);
+    CleanupTransparentPixels((uint32_t*)curr_rgba, image->canvas_width,
+                             image->canvas_height);

    if (dump_frames && dump_ok) {
      dump_ok = DumpFrame(filename, dump_folder, frame_index, curr_rgba,
@@ -280,7 +284,7 @@ static int ReadAnimatedWebP(const char filename[],
  ok = dump_ok;
  if (ok) image->format = ANIM_WEBP;

- End:
+End:
  WebPAnimDecoderDelete(dec);
  return ok;
 }
@@ -300,12 +304,11 @@ static int IsGIF(const WebPData* const data) {

 // GIFLIB_MAJOR is only defined in libgif >= 4.2.0.
 #if defined(GIFLIB_MAJOR) && defined(GIFLIB_MINOR)
-# define LOCAL_GIF_VERSION ((GIFLIB_MAJOR << 8) | GIFLIB_MINOR)
-# define LOCAL_GIF_PREREQ(maj, min) \
-    (LOCAL_GIF_VERSION >= (((maj) << 8) | (min)))
+#define LOCAL_GIF_VERSION ((GIFLIB_MAJOR << 8) | GIFLIB_MINOR)
+#define LOCAL_GIF_PREREQ(maj, min) (LOCAL_GIF_VERSION >= (((maj) << 8) | (min)))
 #else
-# define LOCAL_GIF_VERSION 0
-# define LOCAL_GIF_PREREQ(maj, min) 0
+#define LOCAL_GIF_VERSION 0
+#define LOCAL_GIF_PREREQ(maj, min) 0
 #endif

 #if !LOCAL_GIF_PREREQ(5, 0)
@@ -313,14 +316,14 @@ static int IsGIF(const WebPData* const data) {
 // Added in v5.0
 typedef struct {
  int DisposalMode;
-#define DISPOSAL_UNSPECIFIED      0       // No disposal specified
-#define DISPOSE_DO_NOT            1       // Leave image in place
-#define DISPOSE_BACKGROUND        2       // Set area to background color
-#define DISPOSE_PREVIOUS          3       // Restore to previous content
-  int UserInputFlag;       // User confirmation required before disposal
-  int DelayTime;           // Pre-display delay in 0.01sec units
-  int TransparentColor;    // Palette index for transparency, -1 if none
-#define NO_TRANSPARENT_COLOR     -1
+#define DISPOSAL_UNSPECIFIED 0  // No disposal specified
+#define DISPOSE_DO_NOT 1        // Leave image in place
+#define DISPOSE_BACKGROUND 2    // Set area to background color
+#define DISPOSE_PREVIOUS 3      // Restore to previous content
+  int UserInputFlag;            // User confirmation required before disposal
+  int DelayTime;                // Pre-display delay in 0.01sec units
+  int TransparentColor;         // Palette index for transparency, -1 if none
+#define NO_TRANSPARENT_COLOR -1
 } GraphicsControlBlock;

 static int DGifExtensionToGCB(const size_t GifExtensionLength,
@@ -354,8 +357,8 @@ static int DGifSavedExtensionToGCB(GifFileType* GifFile, int ImageIndex,
  for (i = 0; i < GifFile->SavedImages[ImageIndex].ExtensionBlockCount; i++) {
    ExtensionBlock* ep = &GifFile->SavedImages[ImageIndex].ExtensionBlocks[i];
    if (ep->Function == GRAPHICS_EXT_FUNC_CODE) {
-      return DGifExtensionToGCB(
-          ep->ByteCount, (const GifByteType*)ep->Bytes, gcb);
+      return DGifExtensionToGCB(ep->ByteCount, (const GifByteType*)ep->Bytes,
+                                gcb);
    }
  }
  return GIF_ERROR;
@@ -374,12 +377,12 @@ static int DGifSavedExtensionToGCB(GifFileType* GifFile, int ImageIndex,
 #endif

 static int IsKeyFrameGIF(const GifImageDesc* prev_desc, int prev_dispose,
-                         const DecodedFrame* const prev_frame,
-                         int canvas_width, int canvas_height) {
+                         const DecodedFrame* const prev_frame, int canvas_width,
+                         int canvas_height) {
  if (prev_frame == NULL) return 1;
  if (prev_dispose == DISPOSE_BACKGROUND) {
-    if (IsFullFrame(prev_desc->Width, prev_desc->Height,
-                    canvas_width, canvas_height)) {
+    if (IsFullFrame(prev_desc->Width, prev_desc->Height, canvas_width,
+                    canvas_height)) {
      return 1;
    }
    if (prev_frame->is_key_frame) return 1;
@@ -400,14 +403,12 @@ static uint32_t GetBackgroundColorGIF(GifFileType* gif) {
  if (transparent_index != NO_TRANSPARENT_COLOR &&
      gif->SBackGroundColor == transparent_index) {
    return 0x00000000;  // Special case: transparent black.
-  } else if (color_map == NULL || color_map->Colors == NULL
-             || gif->SBackGroundColor >= color_map->ColorCount) {
+  } else if (color_map == NULL || color_map->Colors == NULL ||
+             gif->SBackGroundColor >= color_map->ColorCount) {
    return 0xffffffff;  // Invalid: assume white.
  } else {
    const GifColorType color = color_map->Colors[gif->SBackGroundColor];
-    return (0xffu << 24) |
-           (color.Red << 16) |
-           (color.Green << 8) |
+    return (0xffu << 24) | (color.Red << 16) | (color.Green << 8) |
           (color.Blue << 0);
  }
 }
@@ -432,11 +433,10 @@ static uint32_t GetLoopCountGIF(const GifFileType* const gif) {
          (eb1->ByteCount == 11) &&
          (!memcmp(signature, "NETSCAPE2.0", 11) ||
           !memcmp(signature, "ANIMEXTS1.0", 11));
-      if (signature_is_ok &&
-          eb2->Function == CONTINUE_EXT_FUNC_CODE && eb2->ByteCount >= 3 &&
-          eb2->Bytes[0] == 1) {
-        const uint32_t extra_loop = ((uint32_t)(eb2->Bytes[2]) << 8) +
-                                    ((uint32_t)(eb2->Bytes[1]) << 0);
+      if (signature_is_ok && eb2->Function == CONTINUE_EXT_FUNC_CODE &&
+          eb2->ByteCount >= 3 && eb2->Bytes[0] == 1) {
+        const uint32_t extra_loop =
+            ((uint32_t)(eb2->Bytes[2]) << 8) + ((uint32_t)(eb2->Bytes[1]) << 0);
        return (extra_loop > 0) ? extra_loop + 1 : 0;
      }
    }
@@ -532,8 +532,8 @@ static int ReadAnimatedGIF(const char filename[], AnimatedImage* const image,
  image->canvas_height = (uint32_t)gif->SHeight;
  if (image->canvas_width > MAX_CANVAS_SIZE ||
      image->canvas_height > MAX_CANVAS_SIZE) {
-    fprintf(stderr, "Invalid canvas dimension: %d x %d\n",
-            image->canvas_width, image->canvas_height);
+    fprintf(stderr, "Invalid canvas dimension: %d x %d\n", image->canvas_width,
+            image->canvas_height);
    DGifCloseFile(gif, NULL);
    return 0;
  }
@@ -608,11 +608,9 @@ static int ReadAnimatedGIF(const char filename[], AnimatedImage* const image,
        CopyCanvas(prev_rgba, curr_rgba, canvas_width, canvas_height);

        // Dispose previous frame rectangle.
-        prev_frame_disposed =
-            (prev_gcb.DisposalMode == DISPOSE_BACKGROUND ||
-             prev_gcb.DisposalMode == DISPOSE_PREVIOUS);
-        curr_frame_opaque =
-            (curr_gcb.TransparentColor == NO_TRANSPARENT_COLOR);
+        prev_frame_disposed = (prev_gcb.DisposalMode == DISPOSE_BACKGROUND ||
+                               prev_gcb.DisposalMode == DISPOSE_PREVIOUS);
+        curr_frame_opaque = (curr_gcb.TransparentColor == NO_TRANSPARENT_COLOR);
        prev_frame_completely_covered =
            curr_frame_opaque &&
            CoversFrameGIF(&curr_gif_image->ImageDesc, prev_desc);
@@ -640,9 +638,9 @@ static int ReadAnimatedGIF(const char filename[], AnimatedImage* const image,
                uint8_t* const src_frame_rgba =
                    image->frames[src_frame_num].rgba;
                CopyFrameRectangle(src_frame_rgba, curr_rgba,
-                                   canvas_width_in_bytes,
-                                   prev_desc->Left, prev_desc->Top,
-                                   prev_desc->Width, prev_desc->Height);
+                                   canvas_width_in_bytes, prev_desc->Left,
+                                   prev_desc->Top, prev_desc->Width,
+                                   prev_desc->Height);
              } else {
                // Source canvas doesn't exist. So clear previous frame
                // rectangle to background.
@@ -667,8 +665,8 @@ static int ReadAnimatedGIF(const char filename[], AnimatedImage* const image,
    }

    if (dump_frames) {
-      if (!DumpFrame(filename, dump_folder, i, curr_rgba,
-                     canvas_width, canvas_height)) {
+      if (!DumpFrame(filename, dump_folder, i, curr_rgba, canvas_width,
+                     canvas_height)) {
        DGifCloseFile(gif, NULL);
        return 0;
      }
@@ -692,7 +690,8 @@ static int ReadAnimatedGIF(const char filename[], AnimatedImage* const image,
  (void)image;
  (void)dump_frames;
  (void)dump_folder;
-  fprintf(stderr, "GIF support not compiled. Please install the libgif-dev "
+  fprintf(stderr,
+          "GIF support not compiled. Please install the libgif-dev "
          "package before building.\n");
  return 0;
 }
@@ -715,8 +714,8 @@ int ReadAnimatedImage(const char filename[], AnimatedImage* const image,
  }

  if (IsWebP(&webp_data)) {
-    ok = ReadAnimatedWebP(filename, &webp_data, image, dump_frames,
-                          dump_folder);
+    ok =
+        ReadAnimatedWebP(filename, &webp_data, image, dump_frames, dump_folder);
  } else if (IsGIF(&webp_data)) {
    ok = ReadAnimatedGIF(filename, image, dump_frames, dump_folder);
  } else {
@@ -760,8 +759,7 @@ void GetDiffAndPSNR(const uint8_t rgba1[], const uint8_t rgba2[],
        // premultiply R/G/B channels with alpha value
        for (k = 0; k < kAlphaChannel; ++k) {
          Accumulate(rgba1[offset + k] * alpha1 / 255.,
-                     rgba2[offset + k] * alpha2 / 255.,
-                     &f_max_diff, &sse);
+                     rgba2[offset + k] * alpha2 / 255., &f_max_diff, &sse);
        }
      }
    }
@@ -771,6 +769,7 @@ void GetDiffAndPSNR(const uint8_t rgba1[], const uint8_t rgba2[],
    *psnr = 99.;  // PSNR when images are identical.
  } else {
    sse /= stride * height;
+    assert(sse != 0.0);
    *psnr = 4.3429448 * log(255. * 255. / sse);
  }
 }
--- a/examples/anim_util.h
+++ b/examples/anim_util.h
@@ -22,15 +22,12 @@
 extern "C" {
 #endif

-typedef enum {
-  ANIM_GIF,
-  ANIM_WEBP
-} AnimatedFileFormat;
+typedef enum { ANIM_GIF, ANIM_WEBP } AnimatedFileFormat;

 typedef struct {
-  uint8_t* rgba;         // Decoded and reconstructed full frame.
-  int duration;          // Frame duration in milliseconds.
-  int is_key_frame;      // True if this frame is a key-frame.
+  uint8_t* rgba;     // Decoded and reconstructed full frame.
+  int duration;      // Frame duration in milliseconds.
+  int is_key_frame;  // True if this frame is a key-frame.
 } DecodedFrame;

 typedef struct {
@@ -67,7 +64,7 @@ void GetAnimatedImageVersions(int* const decoder_version,
                              int* const demux_version);

 #ifdef __cplusplus
-}    // extern "C"
+}  // extern "C"
 #endif

 #endif  // WEBP_EXAMPLES_ANIM_UTIL_H_
--- a/examples/cwebp.c
+++ b/examples/cwebp.c
@@ -27,18 +27,20 @@
 #include "../imageio/webpdec.h"
 #include "./stopwatch.h"
 #include "./unicode.h"
+#include "imageio/metadata.h"
 #include "sharpyuv/sharpyuv.h"
 #include "webp/encode.h"
+#include "webp/types.h"

 #ifndef WEBP_DLL
 #ifdef __cplusplus
 extern "C" {
 #endif

-extern void* VP8GetCPUInfo;   // opaque forward declaration.
+extern void* VP8GetCPUInfo;  // opaque forward declaration.

 #ifdef __cplusplus
-}    // extern "C"
+}  // extern "C"
 #endif
 #endif  // WEBP_DLL

@@ -64,12 +66,12 @@ static int ReadYUV(const uint8_t* const data, size_t data_size,

  pic->use_argb = 0;
  if (!WebPPictureAlloc(pic)) return 0;
-  ImgIoUtilCopyPlane(data, pic->width, pic->y, pic->y_stride,
-                     pic->width, pic->height);
-  ImgIoUtilCopyPlane(data + y_plane_size, uv_width,
-                     pic->u, pic->uv_stride, uv_width, uv_height);
-  ImgIoUtilCopyPlane(data + y_plane_size + uv_plane_size, uv_width,
-                     pic->v, pic->uv_stride, uv_width, uv_height);
+  ImgIoUtilCopyPlane(data, pic->width, pic->y, pic->y_stride, pic->width,
+                     pic->height);
+  ImgIoUtilCopyPlane(data + y_plane_size, uv_width, pic->u, pic->uv_stride,
+                     uv_width, uv_height);
+  ImgIoUtilCopyPlane(data + y_plane_size + uv_plane_size, uv_width, pic->v,
+                     pic->uv_stride, uv_width, uv_height);
  return use_argb ? WebPPictureYUVAToARGB(pic) : 1;
 }

@@ -117,7 +119,7 @@ static int ReadPicture(const char* const filename, WebPPicture* const pic,
    // If image size is specified, infer it as YUV format.
    ok = ReadYUV(data, data_size, pic);
  }
- End:
+End:
  if (!ok) {
    WFPRINTF(stderr, "Error! Could not process file %s\n",
             (const W_CHAR*)filename);
@@ -166,8 +168,8 @@ static void PrintValues(const int values[4]) {

 static void PrintFullLosslessInfo(const WebPAuxStats* const stats,
                                  const char* const description) {
-  fprintf(stderr, "Lossless-%s compressed size: %d bytes\n",
-          description, stats->lossless_size);
+  fprintf(stderr, "Lossless-%s compressed size: %d bytes\n", description,
+          stats->lossless_size);
  fprintf(stderr, "  * Header size: %d bytes, image data size: %d\n",
          stats->lossless_hdr_size, stats->lossless_data_size);
  if (stats->lossless_features) {
@@ -207,8 +209,7 @@ static void PrintExtraInfoLossless(const WebPPicture* const pic,
 }

 static void PrintExtraInfoLossy(const WebPPicture* const pic, int short_output,
-                                int full_details,
-                                const char* const file_name) {
+                                int full_details, const char* const file_name) {
  const WebPAuxStats* const stats = pic->stats;
  if (short_output) {
    fprintf(stderr, "%7d %2.2f\n", stats->coded_size, stats->PSNR[3]);
@@ -218,25 +219,25 @@ static void PrintExtraInfoLossy(const WebPPicture* const pic, int short_output,
    const int num_skip = stats->block_count[2];
    const int total = num_i4 + num_i16;
    WFPRINTF(stderr, "File:      %s\n", (const W_CHAR*)file_name);
-    fprintf(stderr, "Dimension: %d x %d%s\n",
-            pic->width, pic->height,
+    fprintf(stderr, "Dimension: %d x %d%s\n", pic->width, pic->height,
            stats->alpha_data_size ? " (with alpha)" : "");
-    fprintf(stderr, "Output:    "
+    fprintf(stderr,
+            "Output:    "
            "%d bytes Y-U-V-All-PSNR %2.2f %2.2f %2.2f   %2.2f dB\n"
            "           (%.2f bpp)\n",
-            stats->coded_size,
-            stats->PSNR[0], stats->PSNR[1], stats->PSNR[2], stats->PSNR[3],
-            8.f * stats->coded_size / pic->width / pic->height);
+            stats->coded_size, stats->PSNR[0], stats->PSNR[1], stats->PSNR[2],
+            stats->PSNR[3], 8.f * stats->coded_size / pic->width / pic->height);
    if (total > 0) {
-      int totals[4] = { 0, 0, 0, 0 };
-      fprintf(stderr, "block count:  intra4:     %6d  (%.2f%%)\n"
-                      "              intra16:    %6d  (%.2f%%)\n"
-                      "              skipped:    %6d  (%.2f%%)\n",
-              num_i4, 100.f * num_i4 / total,
-              num_i16, 100.f * num_i16 / total,
+      int totals[4] = {0, 0, 0, 0};
+      fprintf(stderr,
+              "block count:  intra4:     %6d  (%.2f%%)\n"
+              "              intra16:    %6d  (%.2f%%)\n"
+              "              skipped:    %6d  (%.2f%%)\n",
+              num_i4, 100.f * num_i4 / total, num_i16, 100.f * num_i16 / total,
              num_skip, 100.f * num_skip / total);
-      fprintf(stderr, "bytes used:  header:         %6d  (%.1f%%)\n"
-                      "             mode-partition: %6d  (%.1f%%)\n",
+      fprintf(stderr,
+              "bytes used:  header:         %6d  (%.1f%%)\n"
+              "             mode-partition: %6d  (%.1f%%)\n",
              stats->header_bytes[0],
              100.f * stats->header_bytes[0] / stats->coded_size,
              stats->header_bytes[1],
@@ -245,9 +246,10 @@ static void PrintExtraInfoLossy(const WebPPicture* const pic, int short_output,
        fprintf(stderr, "             transparency:   %6d (%.1f dB)\n",
                stats->alpha_data_size, stats->PSNR[4]);
      }
-      fprintf(stderr, " Residuals bytes  "
-                      "|segment 1|segment 2|segment 3"
-                      "|segment 4|  total\n");
+      fprintf(stderr,
+              " Residuals bytes  "
+              "|segment 1|segment 2|segment 3"
+              "|segment 4|  total\n");
      if (full_details) {
        fprintf(stderr, "  intra4-coeffs:  ");
        PrintByteCount(stats->residual_bytes[0], stats->coded_size, totals);
@@ -284,11 +286,11 @@ static void PrintMapInfo(const WebPPicture* const pic) {
    for (y = 0; y < mb_h; ++y) {
      for (x = 0; x < mb_w; ++x) {
        const int c = pic->extra_info[x + y * mb_w];
-        if (type == 1) {   // intra4/intra16
+        if (type == 1) {  // intra4/intra16
          fprintf(stderr, "%c", "+."[c]);
-        } else if (type == 2) {    // segments
+        } else if (type == 2) {  // segments
          fprintf(stderr, "%c", ".-*X"[c]);
-        } else if (type == 3) {    // quantizers
+        } else if (type == 3) {  // quantizers
          fprintf(stderr, "%.2d ", c);
        } else if (type == 6 || type == 7) {
          fprintf(stderr, "%3d ", c);
@@ -344,7 +346,7 @@ static int DumpPicture(const WebPPicture* const picture, const char* PGM_name) {
  }
  ok = 1;

- Error:
+Error:
  fclose(f);
  return ok;
 }
@@ -354,9 +356,9 @@ static int DumpPicture(const WebPPicture* const picture, const char* PGM_name) {

 enum {
  METADATA_EXIF = (1 << 0),
-  METADATA_ICC  = (1 << 1),
-  METADATA_XMP  = (1 << 2),
-  METADATA_ALL  = METADATA_EXIF | METADATA_ICC | METADATA_XMP
+  METADATA_ICC = (1 << 1),
+  METADATA_XMP = (1 << 2),
+  METADATA_ALL = METADATA_EXIF | METADATA_ICC | METADATA_XMP
 };

 static const int kChunkHeaderSize = 8;
@@ -409,9 +411,9 @@ static int WriteMetadataChunk(FILE* const out, const char fourcc[4],

 // Sets 'flag' in 'vp8x_flags' and updates 'metadata_size' with the size of the
 // chunk if there is metadata and 'keep' is true.
-static int UpdateFlagsAndSize(const MetadataPayload* const payload,
-                              int keep, int flag,
-                              uint32_t* vp8x_flags, uint64_t* metadata_size) {
+static int UpdateFlagsAndSize(const MetadataPayload* const payload, int keep,
+                              int flag, uint32_t* vp8x_flags,
+                              uint64_t* metadata_size) {
  if (keep && payload->bytes != NULL && payload->size > 0) {
    *vp8x_flags |= flag;
    *metadata_size += kChunkHeaderSize + payload->size + (payload->size & 1);
@@ -432,23 +434,23 @@ static int WriteWebPWithMetadata(FILE* const out,
                                 int* const metadata_written) {
  const char kVP8XHeader[] = "VP8X\x0a\x00\x00\x00";
  const int kAlphaFlag = 0x10;
-  const int kEXIFFlag  = 0x08;
-  const int kICCPFlag  = 0x20;
-  const int kXMPFlag   = 0x04;
+  const int kEXIFFlag = 0x08;
+  const int kICCPFlag = 0x20;
+  const int kXMPFlag = 0x04;
  const size_t kRiffHeaderSize = 12;
  const size_t kMaxChunkPayload = ~0 - kChunkHeaderSize - 1;
  const size_t kMinSize = kRiffHeaderSize + kChunkHeaderSize;
  uint32_t flags = 0;
  uint64_t metadata_size = 0;
-  const int write_exif = UpdateFlagsAndSize(&metadata->exif,
-                                            !!(keep_metadata & METADATA_EXIF),
-                                            kEXIFFlag, &flags, &metadata_size);
-  const int write_iccp = UpdateFlagsAndSize(&metadata->iccp,
-                                            !!(keep_metadata & METADATA_ICC),
-                                            kICCPFlag, &flags, &metadata_size);
-  const int write_xmp  = UpdateFlagsAndSize(&metadata->xmp,
-                                            !!(keep_metadata & METADATA_XMP),
-                                            kXMPFlag, &flags, &metadata_size);
+  const int write_exif =
+      UpdateFlagsAndSize(&metadata->exif, !!(keep_metadata & METADATA_EXIF),
+                         kEXIFFlag, &flags, &metadata_size);
+  const int write_iccp =
+      UpdateFlagsAndSize(&metadata->iccp, !!(keep_metadata & METADATA_ICC),
+                         kICCPFlag, &flags, &metadata_size);
+  const int write_xmp =
+      UpdateFlagsAndSize(&metadata->xmp, !!(keep_metadata & METADATA_XMP),
+                         kXMPFlag, &flags, &metadata_size);
  uint8_t* webp = memory_writer->mem;
  size_t webp_size = memory_writer->size;

@@ -456,17 +458,18 @@ static int WriteWebPWithMetadata(FILE* const out,

  if (webp_size < kMinSize) return 0;
  if (webp_size - kChunkHeaderSize + metadata_size > kMaxChunkPayload) {
-    fprintf(stderr, "Error! Addition of metadata would exceed "
-                    "container size limit.\n");
+    fprintf(stderr,
+            "Error! Addition of metadata would exceed "
+            "container size limit.\n");
    return 0;
  }

  if (metadata_size > 0) {
    const int kVP8XChunkSize = 18;
    const int has_vp8x = !memcmp(webp + kRiffHeaderSize, "VP8X", kTagSize);
-    const uint32_t riff_size = (uint32_t)(webp_size - kChunkHeaderSize +
-                                          (has_vp8x ? 0 : kVP8XChunkSize) +
-                                          metadata_size);
+    const uint32_t riff_size =
+        (uint32_t)(webp_size - kChunkHeaderSize +
+                   (has_vp8x ? 0 : kVP8XChunkSize) + metadata_size);
    // RIFF
    int ok = (fwrite(webp, kTagSize, 1, out) == 1);
    // RIFF size (file header size is not recorded)
@@ -515,11 +518,39 @@ static int WriteWebPWithMetadata(FILE* const out,
  return (fwrite(webp, webp_size, 1, out) == 1);
 }

+//------------------------------------------------------------------------------
+// Resize
+
+enum {
+  RESIZE_MODE_DOWN_ONLY,
+  RESIZE_MODE_UP_ONLY,
+  RESIZE_MODE_ALWAYS,
+  RESIZE_MODE_DEFAULT = RESIZE_MODE_ALWAYS
+};
+
+static void ApplyResizeMode(const int resize_mode, const WebPPicture* const pic,
+                            int* const resize_w, int* const resize_h) {
+  const int src_w = pic->width;
+  const int src_h = pic->height;
+  const int dst_w = *resize_w;
+  const int dst_h = *resize_h;
+
+  if (resize_mode == RESIZE_MODE_DOWN_ONLY) {
+    if ((dst_w == 0 && src_h <= dst_h) || (dst_h == 0 && src_w <= dst_w) ||
+        (src_w <= dst_w && src_h <= dst_h)) {
+      *resize_w = *resize_h = 0;
+    }
+  } else if (resize_mode == RESIZE_MODE_UP_ONLY) {
+    if (src_w >= dst_w && src_h >= dst_h) {
+      *resize_w = *resize_h = 0;
+    }
+  }
+}
+
 //------------------------------------------------------------------------------

 static int ProgressReport(int percent, const WebPPicture* const picture) {
-  fprintf(stderr, "[%s]: %3d %%      \r",
-          (char*)picture->user_data, percent);
+  fprintf(stderr, "[%s]: %3d %%      \r", (char*)picture->user_data, percent);
  return 1;  // all ok
 }

@@ -536,8 +567,9 @@ static void HelpShort(void) {
 static void HelpLong(void) {
  printf("Usage:\n");
  printf(" cwebp [-preset <...>] [options] in_file [-o out_file]\n\n");
-  printf("If input size (-s) for an image is not specified, it is\n"
-         "assumed to be a PNG, JPEG, TIFF or WebP file.\n");
+  printf(
+      "If input size (-s) for an image is not specified, it is\n"
+      "assumed to be a PNG, JPEG, TIFF or WebP file.\n");
  printf("Note: Animated PNG and WebP files are not supported.\n");
 #ifdef HAVE_WINCODEC_H
  printf("Windows builds can take as input any of the files handled by WIC.\n");
@@ -545,44 +577,59 @@ static void HelpLong(void) {
  printf("\nOptions:\n");
  printf("  -h / -help ............. short help\n");
  printf("  -H / -longhelp ......... long help\n");
-  printf("  -q <float> ............. quality factor (0:small..100:big), "
-         "default=75\n");
-  printf("  -alpha_q <int> ......... transparency-compression quality (0..100),"
-         "\n                           default=100\n");
+  printf(
+      "  -q <float> ............. quality factor (0:small..100:big), "
+      "default=75\n");
+  printf(
+      "  -alpha_q <int> ......... transparency-compression quality (0..100),"
+      "\n                           default=100\n");
  printf("  -preset <string> ....... preset setting, one of:\n");
  printf("                            default, photo, picture,\n");
  printf("                            drawing, icon, text\n");
  printf("     -preset must come first, as it overwrites other parameters\n");
-  printf("  -z <int> ............... activates lossless preset with given\n"
-         "                           level in [0:fast, ..., 9:slowest]\n");
+  printf(
+      "  -z <int> ............... activates lossless preset with given\n"
+      "                           level in [0:fast, ..., 9:slowest]\n");
  printf("\n");
-  printf("  -m <int> ............... compression method (0=fast, 6=slowest), "
-         "default=4\n");
-  printf("  -segments <int> ........ number of segments to use (1..4), "
-         "default=4\n");
+  printf(
+      "  -m <int> ............... compression method (0=fast, 6=slowest), "
+      "default=4\n");
+  printf(
+      "  -segments <int> ........ number of segments to use (1..4), "
+      "default=4\n");
  printf("  -size <int> ............ target size (in bytes)\n");
  printf("  -psnr <float> .......... target PSNR (in dB. typically: 42)\n");
  printf("\n");
  printf("  -s <int> <int> ......... input size (width x height) for YUV\n");
-  printf("  -sns <int> ............. spatial noise shaping (0:off, 100:max), "
-         "default=50\n");
-  printf("  -f <int> ............... filter strength (0=off..100), "
-         "default=60\n");
-  printf("  -sharpness <int> ....... "
-         "filter sharpness (0:most .. 7:least sharp), default=0\n");
-  printf("  -strong ................ use strong filter instead "
-                                     "of simple (default)\n");
+  printf(
+      "  -sns <int> ............. spatial noise shaping (0:off, 100:max), "
+      "default=50\n");
+  printf(
+      "  -f <int> ............... filter strength (0=off..100), "
+      "default=60\n");
+  printf(
+      "  -sharpness <int> ....... "
+      "filter sharpness (0:most .. 7:least sharp), default=0\n");
+  printf(
+      "  -strong ................ use strong filter instead "
+      "of simple (default)\n");
  printf("  -nostrong .............. use simple filter instead of strong\n");
-  printf("  -sharp_yuv ............. use sharper (and slower) RGB->YUV "
-                                     "conversion\n");
+  printf(
+      "  -sharp_yuv ............. use sharper (and slower) RGB->YUV "
+      "conversion\n");
  printf("  -partition_limit <int> . limit quality to fit the 512k limit on\n");
-  printf("                           "
-         "the first partition (0=no degradation ... 100=full)\n");
+  printf(
+      "                           "
+      "the first partition (0=no degradation ... 100=full)\n");
  printf("  -pass <int> ............ analysis pass number (1..10)\n");
-  printf("  -qrange <min> <max> .... specifies the permissible quality range\n"
-         "                           (default: 0 100)\n");
+  printf(
+      "  -qrange <min> <max> .... specifies the permissible quality range\n"
+      "                           (default: 0 100)\n");
  printf("  -crop <x> <y> <w> <h> .. crop picture with the given rectangle\n");
  printf("  -resize <w> <h> ........ resize picture (*after* any cropping)\n");
+  printf(
+      "  -resize_mode <string> .. one of: up_only, down_only,"
+      " always (default)\n");
  printf("  -mt .................... use multi-threading if available\n");
  printf("  -low_memory ............ reduce memory usage (slower encoding)\n");
  printf("  -map <int> ............. print map of extra info\n");
@@ -590,20 +637,24 @@ static void HelpLong(void) {
  printf("  -print_ssim ............ prints averaged SSIM distortion\n");
  printf("  -print_lsim ............ prints local-similarity distortion\n");
  printf("  -d <file.pgm> .......... dump the compressed output (PGM file)\n");
-  printf("  -alpha_method <int> .... transparency-compression method (0..1), "
-         "default=1\n");
+  printf(
+      "  -alpha_method <int> .... transparency-compression method (0..1), "
+      "default=1\n");
  printf("  -alpha_filter <string> . predictive filtering for alpha plane,\n");
  printf("                           one of: none, fast (default) or best\n");
-  printf("  -exact ................. preserve RGB values in transparent area, "
-         "default=off\n");
-  printf("  -blend_alpha <hex> ..... blend colors against background color\n"
-         "                           expressed as RGB values written in\n"
-         "                           hexadecimal, e.g. 0xc0e0d0 for red=0xc0\n"
-         "                           green=0xe0 and blue=0xd0\n");
+  printf(
+      "  -exact ................. preserve RGB values in transparent area, "
+      "default=off\n");
+  printf(
+      "  -blend_alpha <hex> ..... blend colors against background color\n"
+      "                           expressed as RGB values written in\n"
+      "                           hexadecimal, e.g. 0xc0e0d0 for red=0xc0\n"
+      "                           green=0xe0 and blue=0xd0\n");
  printf("  -noalpha ............... discard any transparency information\n");
  printf("  -lossless .............. encode image losslessly, default=off\n");
-  printf("  -near_lossless <int> ... use near-lossless image preprocessing\n"
-         "                           (0..100=off), default=100\n");
+  printf(
+      "  -near_lossless <int> ... use near-lossless image preprocessing\n"
+      "                           (0..100=off), default=100\n");
  printf("  -hint <string> ......... specify image characteristics hint,\n");
  printf("                           one of: photo, picture or graph\n");

@@ -611,8 +662,9 @@ static void HelpLong(void) {
  printf("  -metadata <string> ..... comma separated list of metadata to\n");
  printf("                           ");
  printf("copy from the input to the output if present.\n");
-  printf("                           "
-         "Valid values: all, none (default), exif, icc, xmp\n");
+  printf(
+      "                           "
+      "Valid values: all, none (default), exif, icc, xmp\n");

  printf("\n");
  printf("  -short ................. condense printed message\n");
@@ -621,8 +673,9 @@ static void HelpLong(void) {
 #ifndef WEBP_DLL
  printf("  -noasm ................. disable all assembly optimizations\n");
 #endif
-  printf("  -v ..................... verbose, e.g. print encoding/decoding "
-         "times\n");
+  printf(
+      "  -v ..................... verbose, e.g. print encoding/decoding "
+      "times\n");
  printf("  -progress .............. report encoding progress\n");
  printf("\n");
  printf("Experimental Options:\n");
@@ -637,30 +690,29 @@ static void HelpLong(void) {
 // Error messages

 static const char* const kErrorMessages[VP8_ENC_ERROR_LAST] = {
-  "OK",
-  "OUT_OF_MEMORY: Out of memory allocating objects",
-  "BITSTREAM_OUT_OF_MEMORY: Out of memory re-allocating byte buffer",
-  "NULL_PARAMETER: NULL parameter passed to function",
-  "INVALID_CONFIGURATION: configuration is invalid",
-  "BAD_DIMENSION: Bad picture dimension. Maximum width and height "
-  "allowed is 16383 pixels.",
-  "PARTITION0_OVERFLOW: Partition #0 is too big to fit 512k.\n"
-  "To reduce the size of this partition, try using less segments "
-  "with the -segments option, and eventually reduce the number of "
-  "header bits using -partition_limit. More details are available "
-  "in the manual (`man cwebp`)",
-  "PARTITION_OVERFLOW: Partition is too big to fit 16M",
-  "BAD_WRITE: Picture writer returned an I/O error",
-  "FILE_TOO_BIG: File would be too big to fit in 4G",
-  "USER_ABORT: encoding abort requested by user"
-};
+    "OK",
+    "OUT_OF_MEMORY: Out of memory allocating objects",
+    "BITSTREAM_OUT_OF_MEMORY: Out of memory re-allocating byte buffer",
+    "NULL_PARAMETER: NULL parameter passed to function",
+    "INVALID_CONFIGURATION: configuration is invalid",
+    "BAD_DIMENSION: Bad picture dimension. Maximum width and height "
+    "allowed is 16383 pixels.",
+    "PARTITION0_OVERFLOW: Partition #0 is too big to fit 512k.\n"
+    "To reduce the size of this partition, try using less segments "
+    "with the -segments option, and eventually reduce the number of "
+    "header bits using -partition_limit. More details are available "
+    "in the manual (`man cwebp`)",
+    "PARTITION_OVERFLOW: Partition is too big to fit 16M",
+    "BAD_WRITE: Picture writer returned an I/O error",
+    "FILE_TOO_BIG: File would be too big to fit in 4G",
+    "USER_ABORT: encoding abort requested by user"};

 //------------------------------------------------------------------------------

 // Returns EXIT_SUCCESS on success, EXIT_FAILURE on failure.
 int main(int argc, const char* argv[]) {
  int return_value = EXIT_FAILURE;
-  const char* in_file = NULL, *out_file = NULL, *dump_file = NULL;
+  const char *in_file = NULL, *out_file = NULL, *dump_file = NULL;
  FILE* out = NULL;
  int c;
  int short_output = 0;
@@ -670,14 +722,15 @@ int main(int argc, const char* argv[]) {
  uint32_t background_color = 0xffffffu;
  int crop = 0, crop_x = 0, crop_y = 0, crop_w = 0, crop_h = 0;
  int resize_w = 0, resize_h = 0;
+  int resize_mode = RESIZE_MODE_DEFAULT;
  int lossless_preset = 6;
  int use_lossless_preset = -1;  // -1=unset, 0=don't use, 1=use it
  int show_progress = 0;
  int keep_metadata = 0;
  int metadata_written = 0;
  WebPPicture picture;
-  int print_distortion = -1;        // -1=off, 0=PSNR, 1=SSIM, 2=LSIM
-  WebPPicture original_picture;    // when PSNR or SSIM is requested
+  int print_distortion = -1;     // -1=off, 0=PSNR, 1=SSIM, 2=LSIM
+  WebPPicture original_picture;  // when PSNR or SSIM is requested
  WebPConfig config;
  WebPAuxStats stats;
  WebPMemoryWriter memory_writer;
@@ -689,8 +742,7 @@ int main(int argc, const char* argv[]) {

  MetadataInit(&metadata);
  WebPMemoryWriterInit(&memory_writer);
-  if (!WebPPictureInit(&picture) ||
-      !WebPPictureInit(&original_picture) ||
+  if (!WebPPictureInit(&picture) || !WebPPictureInit(&original_picture) ||
      !WebPConfigInit(&config)) {
    fprintf(stderr, "Error! Version mismatch!\n");
    FREE_WARGV_AND_RETURN(EXIT_FAILURE);
@@ -698,7 +750,7 @@ int main(int argc, const char* argv[]) {

  if (argc == 1) {
    HelpShort();
-    FREE_WARGV_AND_RETURN(EXIT_SUCCESS);
+    FREE_WARGV_AND_RETURN(EXIT_FAILURE);
  }

  for (c = 1; c < argc; ++c) {
@@ -729,18 +781,17 @@ int main(int argc, const char* argv[]) {
      picture.width = ExUtilGetInt(argv[++c], 0, &parse_error);
      picture.height = ExUtilGetInt(argv[++c], 0, &parse_error);
      if (picture.width > WEBP_MAX_DIMENSION || picture.width < 0 ||
-          picture.height > WEBP_MAX_DIMENSION ||  picture.height < 0) {
-        fprintf(stderr,
-                "Specified dimension (%d x %d) is out of range.\n",
+          picture.height > WEBP_MAX_DIMENSION || picture.height < 0) {
+        fprintf(stderr, "Specified dimension (%d x %d) is out of range.\n",
                picture.width, picture.height);
        goto Error;
      }
    } else if (!strcmp(argv[c], "-m") && c + 1 < argc) {
      config.method = ExUtilGetInt(argv[++c], 0, &parse_error);
-      use_lossless_preset = 0;   // disable -z option
+      use_lossless_preset = 0;  // disable -z option
    } else if (!strcmp(argv[c], "-q") && c + 1 < argc) {
      config.quality = ExUtilGetFloat(argv[++c], &parse_error);
-      use_lossless_preset = 0;   // disable -z option
+      use_lossless_preset = 0;  // disable -z option
    } else if (!strcmp(argv[c], "-z") && c + 1 < argc) {
      lossless_preset = ExUtilGetInt(argv[++c], 0, &parse_error);
      if (use_lossless_preset != 0) use_lossless_preset = 1;
@@ -837,6 +888,18 @@ int main(int argc, const char* argv[]) {
    } else if (!strcmp(argv[c], "-resize") && c + 2 < argc) {
      resize_w = ExUtilGetInt(argv[++c], 0, &parse_error);
      resize_h = ExUtilGetInt(argv[++c], 0, &parse_error);
+    } else if (!strcmp(argv[c], "-resize_mode") && c + 1 < argc) {
+      ++c;
+      if (!strcmp(argv[c], "down_only")) {
+        resize_mode = RESIZE_MODE_DOWN_ONLY;
+      } else if (!strcmp(argv[c], "up_only")) {
+        resize_mode = RESIZE_MODE_UP_ONLY;
+      } else if (!strcmp(argv[c], "always")) {
+        resize_mode = RESIZE_MODE_ALWAYS;
+      } else {
+        fprintf(stderr, "Error! Unrecognized resize mode: %s\n", argv[c]);
+        goto Error;
+      }
 #ifndef WEBP_DLL
    } else if (!strcmp(argv[c], "-noasm")) {
      VP8GetCPUInfo = NULL;
@@ -844,11 +907,10 @@ int main(int argc, const char* argv[]) {
    } else if (!strcmp(argv[c], "-version")) {
      const int version = WebPGetEncoderVersion();
      const int sharpyuv_version = SharpYuvGetVersion();
-      printf("%d.%d.%d\n",
-             (version >> 16) & 0xff, (version >> 8) & 0xff, version & 0xff);
-      printf("libsharpyuv: %d.%d.%d\n",
-             (sharpyuv_version >> 24) & 0xff, (sharpyuv_version >> 16) & 0xffff,
-             sharpyuv_version & 0xff);
+      printf("%d.%d.%d\n", (version >> 16) & 0xff, (version >> 8) & 0xff,
+             version & 0xff);
+      printf("libsharpyuv: %d.%d.%d\n", (sharpyuv_version >> 24) & 0xff,
+             (sharpyuv_version >> 16) & 0xffff, sharpyuv_version & 0xff);
      FREE_WARGV_AND_RETURN(EXIT_SUCCESS);
    } else if (!strcmp(argv[c], "-progress")) {
      show_progress = 1;
@@ -882,11 +944,11 @@ int main(int argc, const char* argv[]) {
        const char* option;
        int flag;
      } kTokens[] = {
-        { "all",  METADATA_ALL },
-        { "none", 0 },
-        { "exif", METADATA_EXIF },
-        { "icc",  METADATA_ICC },
-        { "xmp",  METADATA_XMP },
+          {"all", METADATA_ALL},    //
+          {"none", 0},              //
+          {"exif", METADATA_EXIF},  //
+          {"icc", METADATA_ICC},    //
+          {"xmp", METADATA_XMP},    //
      };
      const size_t kNumTokens = sizeof(kTokens) / sizeof(kTokens[0]);
      const char* start = argv[++c];
@@ -918,8 +980,9 @@ int main(int argc, const char* argv[]) {
 #ifdef HAVE_WINCODEC_H
      if (keep_metadata != 0 && keep_metadata != METADATA_ICC) {
        // TODO(jzern): remove when -metadata is supported on all platforms.
-        fprintf(stderr, "Warning: only ICC profile extraction is currently"
-                        " supported on this platform!\n");
+        fprintf(stderr,
+                "Warning: only ICC profile extraction is currently"
+                " supported on this platform!\n");
      }
 #endif
    } else if (!strcmp(argv[c], "-v")) {
@@ -957,12 +1020,14 @@ int main(int argc, const char* argv[]) {
  // warning for such options.
  if (!quiet && config.lossless == 1) {
    if (config.target_size > 0 || config.target_PSNR > 0) {
-      fprintf(stderr, "Encoding for specified size or PSNR is not supported"
-                      " for lossless encoding. Ignoring such option(s)!\n");
+      fprintf(stderr,
+              "Encoding for specified size or PSNR is not supported"
+              " for lossless encoding. Ignoring such option(s)!\n");
    }
    if (config.partition_limit > 0) {
-      fprintf(stderr, "Partition limit option is not required for lossless"
-                      " encoding. Ignoring this option!\n");
+      fprintf(stderr,
+              "Partition limit option is not required for lossless"
+              " encoding. Ignoring this option!\n");
    }
  }
  // If a target size or PSNR was given, but somehow the -pass option was
@@ -979,9 +1044,9 @@ int main(int argc, const char* argv[]) {
  // Read the input. We need to decide if we prefer ARGB or YUVA
  // samples, depending on the expected compression mode (this saves
  // some conversion steps).
-  picture.use_argb = (config.lossless || config.use_sharp_yuv ||
-                      config.preprocessing > 0 ||
-                      crop || (resize_w | resize_h) > 0);
+  picture.use_argb =
+      (config.lossless || config.use_sharp_yuv || config.preprocessing > 0 ||
+       crop || (resize_w | resize_h) > 0);
  if (verbose) {
    StopwatchReset(&stop_watch);
  }
@@ -1057,6 +1122,7 @@ int main(int argc, const char* argv[]) {
      goto Error;
    }
  }
+  ApplyResizeMode(resize_mode, &picture, &resize_w, &resize_h);
  if ((resize_w | resize_h) > 0) {
    WebPPicture picture_no_alpha;
    if (config.exact) {
@@ -1128,8 +1194,8 @@ int main(int argc, const char* argv[]) {
  }
  if (!WebPEncode(&config, &picture)) {
    fprintf(stderr, "Error! Cannot encode picture as WebP\n");
-    fprintf(stderr, "Error code: %d (%s)\n",
-            picture.error_code, kErrorMessages[picture.error_code]);
+    fprintf(stderr, "Error code: %d (%s)\n", picture.error_code,
+            kErrorMessages[picture.error_code]);
    goto Error;
  }
  if (verbose) {
@@ -1172,8 +1238,9 @@ int main(int argc, const char* argv[]) {
  // Write the YUV planes to a PGM file. Only available for lossy.
  if (dump_file) {
    if (picture.use_argb) {
-      fprintf(stderr, "Warning: can't dump file (-d option) "
-                      "in lossless mode.\n");
+      fprintf(stderr,
+              "Warning: can't dump file (-d option) "
+              "in lossless mode.\n");
    } else if (!DumpPicture(&picture, dump_file)) {
      WFPRINTF(stderr, "Warning, couldn't dump picture %s\n",
               (const W_CHAR*)dump_file);
@@ -1218,18 +1285,18 @@ int main(int argc, const char* argv[]) {
    if (!short_output && picture.extra_info_type > 0) {
      PrintMapInfo(&picture);
    }
-    if (print_distortion >= 0) {    // print distortion
-      static const char* distortion_names[] = { "PSNR", "SSIM", "LSIM" };
+    if (print_distortion >= 0) {  // print distortion
+      static const char* distortion_names[] = {"PSNR", "SSIM", "LSIM"};
      float values[5];
-      if (!WebPPictureDistortion(&picture, &original_picture,
-                                 print_distortion, values)) {
+      if (!WebPPictureDistortion(&picture, &original_picture, print_distortion,
+                                 values)) {
        fprintf(stderr, "Error while computing the distortion.\n");
        goto Error;
      }
      if (!short_output) {
        fprintf(stderr, "%s: ", distortion_names[print_distortion]);
-        fprintf(stderr, "B:%.2f G:%.2f R:%.2f A:%.2f  Total:%.2f\n",
-                values[0], values[1], values[2], values[3], values[4]);
+        fprintf(stderr, "B:%.2f G:%.2f R:%.2f A:%.2f  Total:%.2f\n", values[0],
+                values[1], values[2], values[3], values[4]);
      } else {
        fprintf(stderr, "%7d %.4f\n", picture.stats->coded_size, values[4]);
      }
@@ -1240,7 +1307,7 @@ int main(int argc, const char* argv[]) {
  }
  return_value = EXIT_SUCCESS;

- Error:
+Error:
  WebPMemoryWriterClear(&memory_writer);
  WebPFree(picture.extra_info);
  MetadataFree(&metadata);
--- a/examples/dwebp.c
+++ b/examples/dwebp.c
@@ -25,6 +25,8 @@
 #include "../imageio/webpdec.h"
 #include "./stopwatch.h"
 #include "./unicode.h"
+#include "webp/decode.h"
+#include "webp/types.h"

 static int verbose = 0;
 static int quiet = 0;
@@ -33,14 +35,13 @@ static int quiet = 0;
 extern "C" {
 #endif

-extern void* VP8GetCPUInfo;   // opaque forward declaration.
+extern void* VP8GetCPUInfo;  // opaque forward declaration.

 #ifdef __cplusplus
-}    // extern "C"
+}  // extern "C"
 #endif
 #endif  // WEBP_DLL

-
 static int SaveOutput(const WebPDecBuffer* const buffer,
                      WebPOutputFileFormat format, const char* const out_file) {
  const int use_stdout = (out_file != NULL) && !WSTRCMP(out_file, "-");
@@ -75,43 +76,42 @@ static int SaveOutput(const WebPDecBuffer* const buffer,
 }

 static void Help(void) {
-  printf("Usage: dwebp in_file [options] [-o out_file]\n\n"
-         "Decodes the WebP image file to PNG format [Default].\n"
-         "Note: Animated WebP files are not supported.\n\n"
-         "Use following options to convert into alternate image formats:\n"
-         "  -pam ......... save the raw RGBA samples as a color PAM\n"
-         "  -ppm ......... save the raw RGB samples as a color PPM\n"
-         "  -bmp ......... save as uncompressed BMP format\n"
-         "  -tiff ........ save as uncompressed TIFF format\n"
-         "  -pgm ......... save the raw YUV samples as a grayscale PGM\n"
-         "                 file with IMC4 layout\n"
-         "  -yuv ......... save the raw YUV samples in flat layout\n"
-         "\n"
-         " Other options are:\n"
-         "  -version ..... print version number and exit\n"
-         "  -nofancy ..... don't use the fancy YUV420 upscaler\n"
-         "  -nofilter .... disable in-loop filtering\n"
-         "  -nodither .... disable dithering\n"
-         "  -dither <d> .. dithering strength (in 0..100)\n"
-         "  -alpha_dither  use alpha-plane dithering if needed\n"
-         "  -mt .......... use multi-threading\n"
-         "  -crop <x> <y> <w> <h> ... crop output with the given rectangle\n"
-         "  -resize <w> <h> ......... resize output (*after* any cropping)\n"
-         "  -flip ........ flip the output vertically\n"
-         "  -alpha ....... only save the alpha plane\n"
-         "  -incremental . use incremental decoding (useful for tests)\n"
-         "  -h ........... this help message\n"
-         "  -v ........... verbose (e.g. print encoding/decoding times)\n"
-         "  -quiet ....... quiet mode, don't print anything\n"
+  printf(
+      "Usage: dwebp in_file [options] [-o out_file]\n\n"
+      "Decodes the WebP image file to PNG format [Default].\n"
+      "Note: Animated WebP files are not supported.\n\n"
+      "Use following options to convert into alternate image formats:\n"
+      "  -pam ......... save the raw RGBA samples as a color PAM\n"
+      "  -ppm ......... save the raw RGB samples as a color PPM\n"
+      "  -bmp ......... save as uncompressed BMP format\n"
+      "  -tiff ........ save as uncompressed TIFF format\n"
+      "  -pgm ......... save the raw YUV samples as a grayscale PGM\n"
+      "                 file with IMC4 layout\n"
+      "  -yuv ......... save the raw YUV samples in flat layout\n"
+      "\n"
+      " Other options are:\n"
+      "  -version ..... print version number and exit\n"
+      "  -nofancy ..... don't use the fancy YUV420 upscaler\n"
+      "  -nofilter .... disable in-loop filtering\n"
+      "  -nodither .... disable dithering\n"
+      "  -dither <d> .. dithering strength (in 0..100)\n"
+      "  -alpha_dither  use alpha-plane dithering if needed\n"
+      "  -mt .......... use multi-threading\n"
+      "  -crop <x> <y> <w> <h> ... crop output with the given rectangle\n"
+      "  -resize <w> <h> ......... resize output (*after* any cropping)\n"
+      "  -flip ........ flip the output vertically\n"
+      "  -alpha ....... only save the alpha plane\n"
+      "  -incremental . use incremental decoding (useful for tests)\n"
+      "  -h ........... this help message\n"
+      "  -v ........... verbose (e.g. print encoding/decoding times)\n"
+      "  -quiet ....... quiet mode, don't print anything\n"
 #ifndef WEBP_DLL
-         "  -noasm ....... disable all assembly optimizations\n"
+      "  -noasm ....... disable all assembly optimizations\n"
 #endif
-        );
+  );
 }

-static const char* const kFormatType[] = {
-  "unspecified", "lossy", "lossless"
-};
+static const char* const kFormatType[] = {"unspecified", "lossy", "lossless"};

 static uint8_t* AllocateExternalBuffer(WebPDecoderConfig* config,
                                       WebPOutputFileFormat format,
@@ -128,23 +128,23 @@ static uint8_t* AllocateExternalBuffer(WebPDecoderConfig* config,
    h = config->options.crop_height;
  }
  if (format >= RGB && format <= rgbA_4444) {
-    const int bpp = (format == RGB || format == BGR) ? 3
-                  : (format == RGBA_4444 || format == rgbA_4444 ||
-                     format == RGB_565) ? 2
-                  : 4;
-    uint32_t stride = bpp * w + 7;   // <- just for exercising
+    const int bpp =
+        (format == RGB || format == BGR)                                    ? 3
+        : (format == RGBA_4444 || format == rgbA_4444 || format == RGB_565) ? 2
+                                                                            : 4;
+    uint32_t stride = bpp * w + 7;  // <- just for exercising
    external_buffer = (uint8_t*)WebPMalloc(stride * h);
    if (external_buffer == NULL) return NULL;
    output_buffer->u.RGBA.stride = stride;
    output_buffer->u.RGBA.size = stride * h;
    output_buffer->u.RGBA.rgba = external_buffer;
-  } else {    // YUV and YUVA
+  } else {  // YUV and YUVA
    const int has_alpha = WebPIsAlphaMode(output_buffer->colorspace);
    uint8_t* tmp;
    uint32_t stride = w + 3;
    uint32_t uv_stride = (w + 1) / 2 + 13;
-    uint32_t total_size = stride * h * (has_alpha ? 2 : 1)
-                        + 2 * uv_stride * (h + 1) / 2;
+    uint32_t total_size =
+        stride * h * (has_alpha ? 2 : 1) + 2 * uv_stride * (h + 1) / 2;
    assert(format >= YUV && format <= YUVA);
    external_buffer = (uint8_t*)WebPMalloc(total_size);
    if (external_buffer == NULL) return NULL;
@@ -226,8 +226,8 @@ int main(int argc, const char* argv[]) {
      quiet = 1;
    } else if (!strcmp(argv[c], "-version")) {
      const int version = WebPGetDecoderVersion();
-      printf("%d.%d.%d\n",
-             (version >> 16) & 0xff, (version >> 8) & 0xff, version & 0xff);
+      printf("%d.%d.%d\n", (version >> 16) & 0xff, (version >> 8) & 0xff,
+             version & 0xff);
      FREE_WARGV_AND_RETURN(EXIT_SUCCESS);
    } else if (!strcmp(argv[c], "-pgm")) {
      format = PGM;
@@ -235,20 +235,33 @@ int main(int argc, const char* argv[]) {
      format = RAW_YUV;
    } else if (!strcmp(argv[c], "-pixel_format") && c < argc - 1) {
      const char* const fmt = argv[++c];
-      if      (!strcmp(fmt, "RGB"))  format = RGB;
-      else if (!strcmp(fmt, "RGBA")) format = RGBA;
-      else if (!strcmp(fmt, "BGR"))  format = BGR;
-      else if (!strcmp(fmt, "BGRA")) format = BGRA;
-      else if (!strcmp(fmt, "ARGB")) format = ARGB;
-      else if (!strcmp(fmt, "RGBA_4444")) format = RGBA_4444;
-      else if (!strcmp(fmt, "RGB_565")) format = RGB_565;
-      else if (!strcmp(fmt, "rgbA")) format = rgbA;
-      else if (!strcmp(fmt, "bgrA")) format = bgrA;
-      else if (!strcmp(fmt, "Argb")) format = Argb;
-      else if (!strcmp(fmt, "rgbA_4444")) format = rgbA_4444;
-      else if (!strcmp(fmt, "YUV"))  format = YUV;
-      else if (!strcmp(fmt, "YUVA")) format = YUVA;
-      else {
+      if (!strcmp(fmt, "RGB")) {
+        format = RGB;
+      } else if (!strcmp(fmt, "RGBA")) {
+        format = RGBA;
+      } else if (!strcmp(fmt, "BGR")) {
+        format = BGR;
+      } else if (!strcmp(fmt, "BGRA")) {
+        format = BGRA;
+      } else if (!strcmp(fmt, "ARGB")) {
+        format = ARGB;
+      } else if (!strcmp(fmt, "RGBA_4444")) {
+        format = RGBA_4444;
+      } else if (!strcmp(fmt, "RGB_565")) {
+        format = RGB_565;
+      } else if (!strcmp(fmt, "rgbA")) {
+        format = rgbA;
+      } else if (!strcmp(fmt, "bgrA")) {
+        format = bgrA;
+      } else if (!strcmp(fmt, "Argb")) {
+        format = Argb;
+      } else if (!strcmp(fmt, "rgbA_4444")) {
+        format = rgbA_4444;
+      } else if (!strcmp(fmt, "YUV")) {
+        format = YUV;
+      } else if (!strcmp(fmt, "YUVA")) {
+        format = YUVA;
+      } else {
        fprintf(stderr, "Can't parse pixel_format %s\n", fmt);
        parse_error = 1;
      }
@@ -269,14 +282,14 @@ int main(int argc, const char* argv[]) {
          ExUtilGetInt(argv[++c], 0, &parse_error);
    } else if (!strcmp(argv[c], "-crop") && c < argc - 4) {
      config.options.use_cropping = 1;
-      config.options.crop_left   = ExUtilGetInt(argv[++c], 0, &parse_error);
-      config.options.crop_top    = ExUtilGetInt(argv[++c], 0, &parse_error);
-      config.options.crop_width  = ExUtilGetInt(argv[++c], 0, &parse_error);
+      config.options.crop_left = ExUtilGetInt(argv[++c], 0, &parse_error);
+      config.options.crop_top = ExUtilGetInt(argv[++c], 0, &parse_error);
+      config.options.crop_width = ExUtilGetInt(argv[++c], 0, &parse_error);
      config.options.crop_height = ExUtilGetInt(argv[++c], 0, &parse_error);
    } else if ((!strcmp(argv[c], "-scale") || !strcmp(argv[c], "-resize")) &&
               c < argc - 2) {  // '-scale' is left for compatibility
      config.options.use_scaling = 1;
-      config.options.scaled_width  = ExUtilGetInt(argv[++c], 0, &parse_error);
+      config.options.scaled_width = ExUtilGetInt(argv[++c], 0, &parse_error);
      config.options.scaled_height = ExUtilGetInt(argv[++c], 0, &parse_error);
    } else if (!strcmp(argv[c], "-flip")) {
      config.options.flip = 1;
@@ -348,25 +361,52 @@ int main(int argc, const char* argv[]) {
        output_buffer->colorspace = MODE_YUVA;
        break;
      // forced modes:
-      case RGB: output_buffer->colorspace = MODE_RGB; break;
-      case RGBA: output_buffer->colorspace = MODE_RGBA; break;
-      case BGR: output_buffer->colorspace = MODE_BGR; break;
-      case BGRA: output_buffer->colorspace = MODE_BGRA; break;
-      case ARGB: output_buffer->colorspace = MODE_ARGB; break;
-      case RGBA_4444: output_buffer->colorspace = MODE_RGBA_4444; break;
-      case RGB_565: output_buffer->colorspace = MODE_RGB_565; break;
-      case rgbA: output_buffer->colorspace = MODE_rgbA; break;
-      case bgrA: output_buffer->colorspace = MODE_bgrA; break;
-      case Argb: output_buffer->colorspace = MODE_Argb; break;
-      case rgbA_4444: output_buffer->colorspace = MODE_rgbA_4444; break;
-      case YUV: output_buffer->colorspace = MODE_YUV; break;
-      case YUVA: output_buffer->colorspace = MODE_YUVA; break;
-      default: goto Exit;
+      case RGB:
+        output_buffer->colorspace = MODE_RGB;
+        break;
+      case RGBA:
+        output_buffer->colorspace = MODE_RGBA;
+        break;
+      case BGR:
+        output_buffer->colorspace = MODE_BGR;
+        break;
+      case BGRA:
+        output_buffer->colorspace = MODE_BGRA;
+        break;
+      case ARGB:
+        output_buffer->colorspace = MODE_ARGB;
+        break;
+      case RGBA_4444:
+        output_buffer->colorspace = MODE_RGBA_4444;
+        break;
+      case RGB_565:
+        output_buffer->colorspace = MODE_RGB_565;
+        break;
+      case rgbA:
+        output_buffer->colorspace = MODE_rgbA;
+        break;
+      case bgrA:
+        output_buffer->colorspace = MODE_bgrA;
+        break;
+      case Argb:
+        output_buffer->colorspace = MODE_Argb;
+        break;
+      case rgbA_4444:
+        output_buffer->colorspace = MODE_rgbA_4444;
+        break;
+      case YUV:
+        output_buffer->colorspace = MODE_YUV;
+        break;
+      case YUVA:
+        output_buffer->colorspace = MODE_YUVA;
+        break;
+      default:
+        goto Exit;
    }

    if (use_external_memory > 0 && format >= RGB) {
-      external_buffer = AllocateExternalBuffer(&config, format,
-                                               use_external_memory);
+      external_buffer =
+          AllocateExternalBuffer(&config, format, use_external_memory);
      if (external_buffer == NULL) goto Exit;
    }

@@ -408,11 +448,12 @@ int main(int argc, const char* argv[]) {
              output_buffer->width, output_buffer->height,
              bitstream->has_alpha ? " (with alpha)" : "",
              kFormatType[bitstream->format]);
-      fprintf(stderr, "Nothing written; "
-                      "use -o flag to save the result as e.g. PNG.\n");
+      fprintf(stderr,
+              "Nothing written; "
+              "use -o flag to save the result as e.g. PNG.\n");
    }
  }
- Exit:
+Exit:
  WebPFreeDecBuffer(output_buffer);
  WebPFree((void*)external_buffer);
  WebPFree((void*)data);
--- a/examples/example_util.c
+++ b/examples/example_util.c
@@ -17,8 +17,9 @@
 #include <stdlib.h>
 #include <string.h>

-#include "webp/mux_types.h"
 #include "../imageio/imageio_util.h"
+#include "webp/mux_types.h"
+#include "webp/types.h"

 //------------------------------------------------------------------------------
 // String parsing
@@ -45,7 +46,7 @@ int ExUtilGetInts(const char* v, int base, int max_output, int output[]) {
    if (error) return -1;
    output[n] = value;
    v = strchr(v, ',');
-    if (v != NULL) ++v;   // skip over the trailing ','
+    if (v != NULL) ++v;  // skip over the trailing ','
  }
  return n;
 }
@@ -66,17 +67,17 @@ float ExUtilGetFloat(const char* const v, int* const error) {
 static void ResetCommandLineArguments(int argc, const char* argv[],
                                      CommandLineArguments* const args) {
  assert(args != NULL);
-  args->argc_ = argc;
-  args->argv_ = argv;
-  args->own_argv_ = 0;
-  WebPDataInit(&args->argv_data_);
+  args->argc = argc;
+  args->argv = argv;
+  args->own_argv = 0;
+  WebPDataInit(&args->argv_data);
 }

 void ExUtilDeleteCommandLineArguments(CommandLineArguments* const args) {
  if (args != NULL) {
-    if (args->own_argv_) {
-      WebPFree((void*)args->argv_);
-      WebPDataClear(&args->argv_data_);
+    if (args->own_argv) {
+      WebPFree((void*)args->argv);
+      WebPDataClear(&args->argv_data);
    }
    ResetCommandLineArguments(0, NULL, args);
  }
@@ -98,19 +99,18 @@ int ExUtilInitCommandLineArguments(int argc, const char* argv[],
    return 0;
 #endif

-    if (!ExUtilReadFileToWebPData(argv[0], &args->argv_data_)) {
+    if (!ExUtilReadFileToWebPData(argv[0], &args->argv_data)) {
      return 0;
    }
-    args->own_argv_ = 1;
-    args->argv_ = (const char**)WebPMalloc(MAX_ARGC * sizeof(*args->argv_));
-    if (args->argv_ == NULL) {
+    args->own_argv = 1;
+    args->argv = (const char**)WebPMalloc(MAX_ARGC * sizeof(*args->argv));
+    if (args->argv == NULL) {
      ExUtilDeleteCommandLineArguments(args);
      return 0;
    }

    argc = 0;
-    for (cur = strtok((char*)args->argv_data_.bytes, sep);
-         cur != NULL;
+    for (cur = strtok((char*)args->argv_data.bytes, sep); cur != NULL;
         cur = strtok(NULL, sep)) {
      if (argc == MAX_ARGC) {
        fprintf(stderr, "ERROR: Arguments limit %d reached\n", MAX_ARGC);
@@ -118,9 +118,9 @@ int ExUtilInitCommandLineArguments(int argc, const char* argv[],
        return 0;
      }
      assert(strlen(cur) != 0);
-      args->argv_[argc++] = cur;
+      args->argv[argc++] = cur;
    }
-    args->argc_ = argc;
+    args->argc = argc;
  }
  return 1;
 }
--- a/examples/example_util.h
+++ b/examples/example_util.h
@@ -13,8 +13,8 @@
 #ifndef WEBP_EXAMPLES_EXAMPLE_UTIL_H_
 #define WEBP_EXAMPLES_EXAMPLE_UTIL_H_

-#include "webp/types.h"
 #include "webp/mux_types.h"
+#include "webp/types.h"

 #ifdef __cplusplus
 extern "C" {
@@ -45,10 +45,10 @@ int ExUtilReadFileToWebPData(const char* const filename,
 // Command-line arguments

 typedef struct {
-  int argc_;
-  const char** argv_;
-  WebPData argv_data_;
-  int own_argv_;
+  int argc;
+  const char** argv;
+  WebPData argv_data;
+  int own_argv;
 } CommandLineArguments;

 // Initializes the structure from the command-line parameters. If there is
@@ -64,7 +64,7 @@ int ExUtilInitCommandLineArguments(int argc, const char* argv[],
 void ExUtilDeleteCommandLineArguments(CommandLineArguments* const args);

 #ifdef __cplusplus
-}    // extern "C"
+}  // extern "C"
 #endif

 #endif  // WEBP_EXAMPLES_EXAMPLE_UTIL_H_
--- a/examples/gif2webp.c
+++ b/examples/gif2webp.c
@@ -28,13 +28,15 @@
 #endif

 #include <gif_lib.h>
-#include "webp/encode.h"
-#include "webp/mux.h"
+
 #include "../examples/example_util.h"
 #include "../imageio/imageio_util.h"
 #include "./gifdec.h"
 #include "./unicode.h"
 #include "./unicode_gif.h"
+#include "sharpyuv/sharpyuv.h"
+#include "webp/encode.h"
+#include "webp/mux.h"

 #if !defined(STDIN_FILENO)
 #define STDIN_FILENO 0
@@ -45,9 +47,8 @@
 static int transparent_index = GIF_INDEX_INVALID;  // Opaque by default.

 static const char* const kErrorMessages[-WEBP_MUX_NOT_ENOUGH_DATA + 1] = {
-  "WEBP_MUX_NOT_FOUND", "WEBP_MUX_INVALID_ARGUMENT", "WEBP_MUX_BAD_DATA",
-  "WEBP_MUX_MEMORY_ERROR", "WEBP_MUX_NOT_ENOUGH_DATA"
-};
+    "WEBP_MUX_NOT_FOUND", "WEBP_MUX_INVALID_ARGUMENT", "WEBP_MUX_BAD_DATA",
+    "WEBP_MUX_MEMORY_ERROR", "WEBP_MUX_NOT_ENOUGH_DATA"};

 static const char* ErrorString(WebPMuxError err) {
  assert(err <= WEBP_MUX_NOT_FOUND && err >= WEBP_MUX_NOT_ENOUGH_DATA);
@@ -55,9 +56,9 @@ static const char* ErrorString(WebPMuxError err) {
 }

 enum {
-  METADATA_ICC  = (1 << 0),
-  METADATA_XMP  = (1 << 1),
-  METADATA_ALL  = METADATA_ICC | METADATA_XMP
+  METADATA_ICC = (1 << 0),
+  METADATA_XMP = (1 << 1),
+  METADATA_ALL = METADATA_ICC | METADATA_XMP
 };

 //------------------------------------------------------------------------------
@@ -68,14 +69,25 @@ static void Help(void) {
  printf("Options:\n");
  printf("  -h / -help ............. this help\n");
  printf("  -lossy ................. encode image using lossy compression\n");
-  printf("  -mixed ................. for each frame in the image, pick lossy\n"
-         "                           or lossless compression heuristically\n");
+  printf(
+      "  -mixed ................. for each frame in the image, pick lossy\n"
+      "                           or lossless compression heuristically\n");
+  printf(
+      "  -near_lossless <int> ... use near-lossless image preprocessing\n"
+      "                           (0..100=off), default=100\n");
+  printf(
+      "  -sharp_yuv ............. use sharper (and slower) RGB->YUV "
+      "conversion\n"
+      "                           (lossy only)\n");
  printf("  -q <float> ............. quality factor (0:small..100:big)\n");
-  printf("  -m <int> ............... compression method (0=fast, 6=slowest)\n");
-  printf("  -min_size .............. minimize output size (default:off)\n"
-         "                           lossless compression by default; can be\n"
-         "                           combined with -q, -m, -lossy or -mixed\n"
-         "                           options\n");
+  printf(
+      "  -m <int> ............... compression method (0=fast, 6=slowest), "
+      "default=4\n");
+  printf(
+      "  -min_size .............. minimize output size (default:off)\n"
+      "                           lossless compression by default; can be\n"
+      "                           combined with -q, -m, -lossy or -mixed\n"
+      "                           options\n");
  printf("  -kmin <int> ............ min distance between key frames\n");
  printf("  -kmax <int> ............ max distance between key frames\n");
  printf("  -f <int> ............... filter strength (0=off..100)\n");
@@ -102,21 +114,21 @@ int main(int argc, const char* argv[]) {
  int gif_error = GIF_ERROR;
  WebPMuxError err = WEBP_MUX_OK;
  int ok = 0;
-  const W_CHAR* in_file = NULL, *out_file = NULL;
+  const W_CHAR *in_file = NULL, *out_file = NULL;
  GifFileType* gif = NULL;
  int frame_duration = 0;
  int frame_timestamp = 0;
  GIFDisposeMethod orig_dispose = GIF_DISPOSE_NONE;

-  WebPPicture frame;                // Frame rectangle only (not disposed).
-  WebPPicture curr_canvas;          // Not disposed.
-  WebPPicture prev_canvas;          // Disposed.
+  WebPPicture frame;        // Frame rectangle only (not disposed).
+  WebPPicture curr_canvas;  // Not disposed.
+  WebPPicture prev_canvas;  // Disposed.

  WebPAnimEncoder* enc = NULL;
  WebPAnimEncoderOptions enc_options;
  WebPConfig config;

-  int frame_number = 0;     // Whether we are processing the first frame.
+  int frame_number = 0;  // Whether we are processing the first frame.
  int done;
  int c;
  int quiet = 0;
@@ -124,7 +136,7 @@ int main(int argc, const char* argv[]) {

  int keep_metadata = METADATA_XMP;  // ICC not output by default.
  WebPData icc_data;
-  int stored_icc = 0;         // Whether we have already stored an ICC profile.
+  int stored_icc = 0;  // Whether we have already stored an ICC profile.
  WebPData xmp_data;
  int stored_xmp = 0;         // Whether we have already stored an XMP profile.
  int loop_count = 0;         // default: infinite
@@ -151,7 +163,7 @@ int main(int argc, const char* argv[]) {

  if (argc == 1) {
    Help();
-    FREE_WARGV_AND_RETURN(EXIT_SUCCESS);
+    FREE_WARGV_AND_RETURN(EXIT_FAILURE);
  }

  for (c = 1; c < argc; ++c) {
@@ -166,6 +178,10 @@ int main(int argc, const char* argv[]) {
    } else if (!strcmp(argv[c], "-mixed")) {
      enc_options.allow_mixed = 1;
      config.lossless = 0;
+    } else if (!strcmp(argv[c], "-near_lossless") && c < argc - 1) {
+      config.near_lossless = ExUtilGetInt(argv[++c], 0, &parse_error);
+    } else if (!strcmp(argv[c], "-sharp_yuv")) {
+      config.use_sharp_yuv = 1;
    } else if (!strcmp(argv[c], "-loop_compatibility")) {
      loop_compatibility = 1;
    } else if (!strcmp(argv[c], "-q") && c < argc - 1) {
@@ -187,10 +203,10 @@ int main(int argc, const char* argv[]) {
        const char* option;
        int flag;
      } kTokens[] = {
-        { "all",  METADATA_ALL },
-        { "none", 0 },
-        { "icc",  METADATA_ICC },
-        { "xmp",  METADATA_XMP },
+          {"all", METADATA_ALL},
+          {"none", 0},
+          {"icc", METADATA_ICC},
+          {"xmp", METADATA_XMP},
      };
      const size_t kNumTokens = sizeof(kTokens) / sizeof(*kTokens);
      const char* start = argv[++c];
@@ -226,10 +242,13 @@ int main(int argc, const char* argv[]) {
    } else if (!strcmp(argv[c], "-version")) {
      const int enc_version = WebPGetEncoderVersion();
      const int mux_version = WebPGetMuxVersion();
+      const int sharpyuv_version = SharpYuvGetVersion();
      printf("WebP Encoder version: %d.%d.%d\nWebP Mux version: %d.%d.%d\n",
             (enc_version >> 16) & 0xff, (enc_version >> 8) & 0xff,
             enc_version & 0xff, (mux_version >> 16) & 0xff,
             (mux_version >> 8) & 0xff, mux_version & 0xff);
+      printf("libsharpyuv: %d.%d.%d\n", (sharpyuv_version >> 24) & 0xff,
+             (sharpyuv_version >> 16) & 0xffff, sharpyuv_version & 0xff);
      FREE_WARGV_AND_RETURN(EXIT_SUCCESS);
    } else if (!strcmp(argv[c], "-quiet")) {
      quiet = 1;
@@ -305,8 +324,8 @@ int main(int argc, const char* argv[]) {
              goto End;
            }
            if (verbose) {
-              printf("Fixed canvas screen dimension to: %d x %d\n",
-                     gif->SWidth, gif->SHeight);
+              printf("Fixed canvas screen dimension to: %d x %d\n", gif->SWidth,
+                     gif->SHeight);
            }
          }
          // Allocate current buffer.
@@ -404,7 +423,7 @@ int main(int argc, const char* argv[]) {
            break;
          }
          case APPLICATION_EXT_FUNC_CODE: {
-            if (data[0] != 11) break;    // Chunk is too short
+            if (data[0] != 11) break;  // Chunk is too short
            if (!memcmp(data + 1, "NETSCAPE2.0", 11) ||
                !memcmp(data + 1, "ANIMEXTS1.0", 11)) {
              if (!GIFReadLoopCount(gif, &data, &loop_count)) {
@@ -515,7 +534,7 @@ int main(int argc, const char* argv[]) {
      }
    }

-    if (stored_icc) {   // Add ICCP chunk.
+    if (stored_icc) {  // Add ICCP chunk.
      err = WebPMuxSetChunk(mux, "ICCP", &icc_data, 1);
      if (verbose) {
        fprintf(stderr, "ICC size: %d\n", (int)icc_data.size);
@@ -527,7 +546,7 @@ int main(int argc, const char* argv[]) {
      }
    }

-    if (stored_xmp) {   // Add XMP chunk.
+    if (stored_xmp) {  // Add XMP chunk.
      err = WebPMuxSetChunk(mux, "XMP ", &xmp_data, 1);
      if (verbose) {
        fprintf(stderr, "XMP size: %d\n", (int)xmp_data.size);
@@ -541,8 +560,10 @@ int main(int argc, const char* argv[]) {

    err = WebPMuxAssemble(mux, &webp_data);
    if (err != WEBP_MUX_OK) {
-      fprintf(stderr, "ERROR (%s): Could not assemble when re-muxing to add "
-              "loop count/metadata.\n", ErrorString(err));
+      fprintf(stderr,
+              "ERROR (%s): Could not assemble when re-muxing to add "
+              "loop count/metadata.\n",
+              ErrorString(err));
      goto End;
    }
  }
@@ -555,8 +576,7 @@ int main(int argc, const char* argv[]) {
    }
    if (!quiet) {
      if (!WSTRCMP(out_file, "-")) {
-        fprintf(stderr, "Saved %d bytes to STDIO\n",
-                (int)webp_data.size);
+        fprintf(stderr, "Saved %d bytes to STDIO\n", (int)webp_data.size);
      } else {
        WFPRINTF(stderr, "Saved output file (%d bytes): %s\n",
                 (int)webp_data.size, out_file);
@@ -564,8 +584,10 @@ int main(int argc, const char* argv[]) {
    }
  } else {
    if (!quiet) {
-      fprintf(stderr, "Nothing written; use -o flag to save the result "
-                      "(%d bytes).\n", (int)webp_data.size);
+      fprintf(stderr,
+              "Nothing written; use -o flag to save the result "
+              "(%d bytes).\n",
+              (int)webp_data.size);
    }
  }

@@ -573,7 +595,7 @@ int main(int argc, const char* argv[]) {
  ok = 1;
  gif_error = GIF_OK;

- End:
+End:
  WebPDataClear(&icc_data);
  WebPDataClear(&xmp_data);
  WebPMuxDelete(mux);
@@ -587,7 +609,7 @@ int main(int argc, const char* argv[]) {
    GIFDisplayError(gif, gif_error);
  }
  if (gif != NULL) {
-#if LOCAL_GIF_PREREQ(5,1)
+#if LOCAL_GIF_PREREQ(5, 1)
    DGifCloseFile(gif, &gif_error);
 #else
    DGifCloseFile(gif);
--- a/examples/gifdec.c
+++ b/examples/gifdec.c
@@ -20,20 +20,20 @@

 #include "webp/encode.h"
 #include "webp/mux_types.h"
+#include "webp/types.h"

 #define GIF_TRANSPARENT_COLOR 0x00000000u
-#define GIF_WHITE_COLOR       0xffffffffu
-#define GIF_TRANSPARENT_MASK  0x01
-#define GIF_DISPOSE_MASK      0x07
-#define GIF_DISPOSE_SHIFT     2
+#define GIF_WHITE_COLOR 0xffffffffu
+#define GIF_TRANSPARENT_MASK 0x01
+#define GIF_DISPOSE_MASK 0x07
+#define GIF_DISPOSE_SHIFT 2

 // from utils/utils.h
 #ifdef __cplusplus
 extern "C" {
 #endif
-extern void WebPCopyPlane(const uint8_t* src, int src_stride,
-                          uint8_t* dst, int dst_stride,
-                          int width, int height);
+extern void WebPCopyPlane(const uint8_t* src, int src_stride, uint8_t* dst,
+                          int dst_stride, int width, int height);
 extern void WebPCopyPixels(const WebPPicture* const src,
                           WebPPicture* const dst);
 #ifdef __cplusplus
@@ -46,18 +46,16 @@ void GIFGetBackgroundColor(const ColorMapObject* const color_map,
  if (transparent_index != GIF_INDEX_INVALID &&
      bgcolor_index == transparent_index) {
    *bgcolor = GIF_TRANSPARENT_COLOR;  // Special case.
-  } else if (color_map == NULL || color_map->Colors == NULL
-             || bgcolor_index >= color_map->ColorCount) {
+  } else if (color_map == NULL || color_map->Colors == NULL ||
+             bgcolor_index >= color_map->ColorCount) {
    *bgcolor = GIF_WHITE_COLOR;
    fprintf(stderr,
            "GIF decode warning: invalid background color index. Assuming "
            "white background.\n");
  } else {
    const GifColorType color = color_map->Colors[bgcolor_index];
-    *bgcolor = (0xffu       << 24)
-             | (color.Red   << 16)
-             | (color.Green <<  8)
-             | (color.Blue  <<  0);
+    *bgcolor = (0xffu << 24) | (color.Red << 16) | (color.Green << 8) |
+               (color.Blue << 0);
  }
 }

@@ -116,9 +114,8 @@ int GIFReadFrame(GifFileType* const gif, int transparent_index,
  const GifImageDesc* const image_desc = &gif->Image;
  uint32_t* dst = NULL;
  uint8_t* tmp = NULL;
-  const GIFFrameRect rect = {
-      image_desc->Left, image_desc->Top, image_desc->Width, image_desc->Height
-  };
+  const GIFFrameRect rect = {image_desc->Left, image_desc->Top,
+                             image_desc->Width, image_desc->Height};
  const uint64_t memory_needed = 4 * rect.width * (uint64_t)rect.height;
  int ok = 0;
  *gif_rect = rect;
@@ -129,8 +126,8 @@ int GIFReadFrame(GifFileType* const gif, int transparent_index,
  }

  // Use a view for the sub-picture:
-  if (!WebPPictureView(picture, rect.x_offset, rect.y_offset,
-                       rect.width, rect.height, &sub_image)) {
+  if (!WebPPictureView(picture, rect.x_offset, rect.y_offset, rect.width,
+                       rect.height, &sub_image)) {
    fprintf(stderr, "Sub-image %dx%d at position %d,%d is invalid!\n",
            rect.width, rect.height, rect.x_offset, rect.y_offset);
    return 0;
@@ -142,8 +139,8 @@ int GIFReadFrame(GifFileType* const gif, int transparent_index,

  if (image_desc->Interlace) {  // Interlaced image.
    // We need 4 passes, with the following offsets and jumps.
-    const int interlace_offsets[] = { 0, 4, 2, 1 };
-    const int interlace_jumps[]   = { 8, 8, 4, 2 };
+    const int interlace_offsets[] = {0, 4, 2, 1};
+    const int interlace_jumps[] = {8, 8, 4, 2};
    int pass;
    for (pass = 0; pass < 4; ++pass) {
      const size_t stride = (size_t)sub_image.argb_stride;
@@ -165,7 +162,7 @@ int GIFReadFrame(GifFileType* const gif, int transparent_index,
  }
  ok = 1;

- End:
+End:
  if (!ok) picture->error_code = sub_image.error_code;
  WebPPictureFree(&sub_image);
  WebPFree(tmp);
@@ -183,7 +180,7 @@ int GIFReadLoopCount(GifFileType* const gif, GifByteType** const buf,
    return 0;  // Loop count sub-block missing.
  }
  if ((*buf)[0] < 3 || (*buf)[1] != 1) {
-    return 0;   // wrong size/marker
+    return 0;  // wrong size/marker
  }
  *loop_count = (*buf)[2] | ((*buf)[3] << 8);
  return 1;
@@ -219,8 +216,7 @@ int GIFReadMetadata(GifFileType* const gif, GifByteType** const buf,
    if (tmp == NULL) {
      return 0;
    }
-    memcpy((void*)(tmp + metadata->size),
-           subblock.bytes, subblock.size);
+    memcpy((void*)(tmp + metadata->size), subblock.bytes, subblock.size);
    metadata->bytes = tmp;
    metadata->size += subblock.size;
  }
@@ -234,8 +230,8 @@ int GIFReadMetadata(GifFileType* const gif, GifByteType** const buf,
  return 1;
 }

-static void ClearRectangle(WebPPicture* const picture,
-                           int left, int top, int width, int height) {
+static void ClearRectangle(WebPPicture* const picture, int left, int top,
+                           int width, int height) {
  int i, j;
  const size_t stride = picture->argb_stride;
  uint32_t* dst = picture->argb + top * stride + left;
@@ -246,8 +242,8 @@ static void ClearRectangle(WebPPicture* const picture,

 void GIFClearPic(WebPPicture* const pic, const GIFFrameRect* const rect) {
  if (rect != NULL) {
-    ClearRectangle(pic, rect->x_offset, rect->y_offset,
-                   rect->width, rect->height);
+    ClearRectangle(pic, rect->x_offset, rect->y_offset, rect->width,
+                   rect->height);
  } else {
    ClearRectangle(pic, 0, 0, pic->width, pic->height);
  }
@@ -265,15 +261,14 @@ void GIFDisposeFrame(GIFDisposeMethod dispose, const GIFFrameRect* const rect,
    GIFClearPic(curr_canvas, rect);
  } else if (dispose == GIF_DISPOSE_RESTORE_PREVIOUS) {
    const size_t src_stride = prev_canvas->argb_stride;
-    const uint32_t* const src = prev_canvas->argb + rect->x_offset
-                              + rect->y_offset * src_stride;
+    const uint32_t* const src =
+        prev_canvas->argb + rect->x_offset + rect->y_offset * src_stride;
    const size_t dst_stride = curr_canvas->argb_stride;
-    uint32_t* const dst = curr_canvas->argb + rect->x_offset
-                        + rect->y_offset * dst_stride;
+    uint32_t* const dst =
+        curr_canvas->argb + rect->x_offset + rect->y_offset * dst_stride;
    assert(prev_canvas != NULL);
-    WebPCopyPlane((uint8_t*)src, (int)(4 * src_stride),
-                  (uint8_t*)dst, (int)(4 * dst_stride),
-                  4 * rect->width, rect->height);
+    WebPCopyPlane((uint8_t*)src, (int)(4 * src_stride), (uint8_t*)dst,
+                  (int)(4 * dst_stride), 4 * rect->width, rect->height);
  }
 }

@@ -296,11 +291,11 @@ void GIFBlendFrames(const WebPPicture* const src,

 void GIFDisplayError(const GifFileType* const gif, int gif_error) {
  // libgif 4.2.0 has retired PrintGifError() and added GifErrorString().
-#if LOCAL_GIF_PREREQ(4,2)
-#if LOCAL_GIF_PREREQ(5,0)
+#if LOCAL_GIF_PREREQ(4, 2)
+#if LOCAL_GIF_PREREQ(5, 0)
  // Static string actually, hence the const char* cast.
-  const char* error_str = (const char*)GifErrorString(
-      (gif == NULL) ? gif_error : gif->Error);
+  const char* error_str =
+      (const char*)GifErrorString((gif == NULL) ? gif_error : gif->Error);
 #else
  const char* error_str = (const char*)GifErrorString();
  (void)gif;
@@ -318,7 +313,8 @@ void GIFDisplayError(const GifFileType* const gif, int gif_error) {
 #else  // !WEBP_HAVE_GIF

 static void ErrorGIFNotAvailable(void) {
-  fprintf(stderr, "GIF support not compiled. Please install the libgif-dev "
+  fprintf(stderr,
+          "GIF support not compiled. Please install the libgif-dev "
          "package before building.\n");
 }

--- a/examples/gifdec.h
+++ b/examples/gifdec.h
@@ -13,6 +13,7 @@
 #define WEBP_EXAMPLES_GIFDEC_H_

 #include <stdio.h>
+
 #include "webp/types.h"

 #ifdef HAVE_CONFIG_H
@@ -29,12 +30,11 @@ extern "C" {

 // GIFLIB_MAJOR is only defined in libgif >= 4.2.0.
 #if defined(GIFLIB_MAJOR) && defined(GIFLIB_MINOR)
-# define LOCAL_GIF_VERSION ((GIFLIB_MAJOR << 8) | GIFLIB_MINOR)
-# define LOCAL_GIF_PREREQ(maj, min) \
-    (LOCAL_GIF_VERSION >= (((maj) << 8) | (min)))
+#define LOCAL_GIF_VERSION ((GIFLIB_MAJOR << 8) | GIFLIB_MINOR)
+#define LOCAL_GIF_PREREQ(maj, min) (LOCAL_GIF_VERSION >= (((maj) << 8) | (min)))
 #else
-# define LOCAL_GIF_VERSION 0
-# define LOCAL_GIF_PREREQ(maj, min) 0
+#define LOCAL_GIF_VERSION 0
+#define LOCAL_GIF_PREREQ(maj, min) 0
 #endif

 #define GIF_INDEX_INVALID (-1)
@@ -110,7 +110,7 @@ void GIFCopyPixels(const struct WebPPicture* const src,
                   struct WebPPicture* const dst);

 #ifdef __cplusplus
-}    // extern "C"
+}  // extern "C"
 #endif

 #endif  // WEBP_EXAMPLES_GIFDEC_H_
--- a/examples/img2webp.c
+++ b/examples/img2webp.c
@@ -31,6 +31,8 @@
 #include "sharpyuv/sharpyuv.h"
 #include "webp/encode.h"
 #include "webp/mux.h"
+#include "webp/mux_types.h"
+#include "webp/types.h"

 //------------------------------------------------------------------------------

@@ -41,16 +43,20 @@ static void Help(void) {

  printf("File-level options (only used at the start of compression):\n");
  printf(" -min_size ............ minimize size\n");
-  printf(" -kmax <int> .......... maximum number of frame between key-frames\n"
-         "                        (0=only keyframes)\n");
-  printf(" -kmin <int> .......... minimum number of frame between key-frames\n"
-         "                        (0=disable key-frames altogether)\n");
+  printf(
+      " -kmax <int> .......... maximum number of frame between key-frames\n"
+      "                        (0=only keyframes)\n");
+  printf(
+      " -kmin <int> .......... minimum number of frame between key-frames\n"
+      "                        (0=disable key-frames altogether)\n");
  printf(" -mixed ............... use mixed lossy/lossless automatic mode\n");
-  printf(" -near_lossless <int> . use near-lossless image preprocessing\n"
-         "                        (0..100=off), default=100\n");
-  printf(" -sharp_yuv ........... use sharper (and slower) RGB->YUV "
-                                  "conversion\n                        "
-                                  "(lossy only)\n");
+  printf(
+      " -near_lossless <int> . use near-lossless image preprocessing\n"
+      "                        (0..100=off), default=100\n");
+  printf(
+      " -sharp_yuv ........... use sharper (and slower) RGB->YUV "
+      "conversion\n                        "
+      "(lossy only)\n");
  printf(" -loop <int> .......... loop count (default: 0, = infinite loop)\n");
  printf(" -v ................... verbose mode\n");
  printf(" -h ................... this help\n");
@@ -59,18 +65,28 @@ static void Help(void) {

  printf("Per-frame options (only used for subsequent images input):\n");
  printf(" -d <int> ............. frame duration in ms (default: 100)\n");
-  printf(" -lossless  ........... use lossless mode (default)\n");
-  printf(" -lossy ... ........... use lossy mode\n");
+  printf(" -lossless ............ use lossless mode (default)\n");
+  printf(" -lossy ............... use lossy mode\n");
  printf(" -q <float> ........... quality\n");
-  printf(" -m <int> ............. method to use\n");
+  printf(
+      " -m <int> ............. compression method (0=fast, 6=slowest), "
+      "default=4\n");
+  printf(
+      " -exact, -noexact ..... preserve or alter RGB values in transparent "
+      "area\n"
+      "                        (default: -noexact, may cause artifacts\n"
+      "                                  with lossy animations)\n");

  printf("\n");
-  printf("example: img2webp -loop 2 in0.png -lossy in1.jpg\n"
-         "                  -d 80 in2.tiff -o out.webp\n");
-  printf("\nNote: if a single file name is passed as the argument, the "
-         "arguments will be\n");
-  printf("tokenized from this file. The file name must not start with "
-         "the character '-'.\n");
+  printf(
+      "example: img2webp -loop 2 in0.png -lossy in1.jpg\n"
+      "                  -d 80 in2.tiff -o out.webp\n");
+  printf(
+      "\nNote: if a single file name is passed as the argument, the "
+      "arguments will be\n");
+  printf(
+      "tokenized from this file. The file name must not start with "
+      "the character '-'.\n");
  printf("\nSupported input formats:\n  %s\n",
         WebPGetEnabledInputFileFormats());
 }
@@ -120,7 +136,7 @@ static int SetLoopCount(int loop_count, WebPData* const webp_data) {
    ok = (err == WEBP_MUX_OK);
  }

- End:
+End:
  WebPMuxDelete(mux);
  if (!ok) {
    fprintf(stderr, "Error during loop-count setting\n");
@@ -146,6 +162,7 @@ int main(int argc, const char* argv[]) {
  WebPData webp_data;
  int c;
  int have_input = 0;
+  int last_input_index = 0;
  CommandLineArguments cmd_args;
  int ok;

@@ -154,12 +171,11 @@ int main(int argc, const char* argv[]) {
  ok = ExUtilInitCommandLineArguments(argc - 1, argv + 1, &cmd_args);
  if (!ok) FREE_WARGV_AND_RETURN(EXIT_FAILURE);

-  argc = cmd_args.argc_;
-  argv = cmd_args.argv_;
+  argc = cmd_args.argc;
+  argv = cmd_args.argv;

  WebPDataInit(&webp_data);
-  if (!WebPAnimEncoderOptionsInit(&anim_config) ||
-      !WebPConfigInit(&config) ||
+  if (!WebPAnimEncoderOptionsInit(&anim_config) || !WebPConfigInit(&config) ||
      !WebPPictureInit(&pic)) {
    fprintf(stderr, "Library version mismatch!\n");
    ok = 0;
@@ -217,13 +233,15 @@ int main(int argc, const char* argv[]) {
      }
      ok = !parse_error;
      if (!ok) goto End;
-      argv[c] = NULL;   // mark option as 'parsed' during 1st pass
+      argv[c] = NULL;  // mark option as 'parsed' during 1st pass
    } else {
      have_input |= 1;
    }
  }
  if (!have_input) {
    fprintf(stderr, "No input file(s) for generating animation!\n");
+    ok = 0;
+    Help();
    goto End;
  }

@@ -232,7 +250,7 @@ int main(int argc, const char* argv[]) {
  config.lossless = 1;
  for (c = 0; ok && c < argc; ++c) {
    if (argv[c] == NULL) continue;
-    if (argv[c][0] == '-') {    // parse local options
+    if (argv[c][0] == '-') {  // parse local options
      int parse_error = 0;
      if (!strcmp(argv[c], "-lossy")) {
        if (!anim_config.allow_mixed) config.lossless = 0;
@@ -248,8 +266,12 @@ int main(int argc, const char* argv[]) {
          fprintf(stderr, "Invalid negative duration (%d)\n", duration);
          parse_error = 1;
        }
+      } else if (!strcmp(argv[c], "-exact")) {
+        config.exact = 1;
+      } else if (!strcmp(argv[c], "-noexact")) {
+        config.exact = 0;
      } else {
-        parse_error = 1;   // shouldn't be here.
+        parse_error = 1;  // shouldn't be here.
        fprintf(stderr, "Unknown option [%s]\n", argv[c]);
      }
      ok = !parse_error;
@@ -268,10 +290,11 @@ int main(int argc, const char* argv[]) {
    // read next input image
    pic.use_argb = 1;
    ok = ReadImage((const char*)GET_WARGV_SHIFTED(argv, c), &pic);
+    last_input_index = c;
    if (!ok) goto End;

    if (enc == NULL) {
-      width  = pic.width;
+      width = pic.width;
      height = pic.height;
      enc = WebPAnimEncoderNew(width, height, &anim_config);
      ok = (enc != NULL);
@@ -283,8 +306,9 @@ int main(int argc, const char* argv[]) {
    if (ok) {
      ok = (width == pic.width && height == pic.height);
      if (!ok) {
-        fprintf(stderr, "Frame #%d dimension mismatched! "
-                        "Got %d x %d. Was expecting %d x %d.\n",
+        fprintf(stderr,
+                "Frame #%d dimension mismatched! "
+                "Got %d x %d. Was expecting %d x %d.\n",
                pic_num, pic.width, pic.height, width, height);
      }
    }
@@ -299,13 +323,22 @@ int main(int argc, const char* argv[]) {
    if (!ok) goto End;

    if (verbose) {
-      WFPRINTF(stderr, "Added frame #%3d at time %4d (file: %s)\n",
-               pic_num, timestamp_ms, GET_WARGV_SHIFTED(argv, c));
+      WFPRINTF(stderr, "Added frame #%3d at time %4d (file: %s)\n", pic_num,
+               timestamp_ms, GET_WARGV_SHIFTED(argv, c));
    }
    timestamp_ms += duration;
    ++pic_num;
  }

+  for (c = last_input_index + 1; c < argc; ++c) {
+    if (argv[c] != NULL) {
+      fprintf(stderr,
+              "Warning: unused option [%s]!"
+              " Frame options go before the input frame.\n",
+              argv[c]);
+    }
+  }
+
  // add a last fake frame to signal the last duration
  ok = ok && WebPAnimEncoderAdd(enc, NULL, timestamp_ms, NULL);
  ok = ok && WebPAnimEncoderAssemble(enc, &webp_data);
@@ -313,7 +346,7 @@ int main(int argc, const char* argv[]) {
    fprintf(stderr, "Error during final animation assembly.\n");
  }

- End:
+End:
  // free resources
  WebPAnimEncoderDelete(enc);

@@ -331,8 +364,8 @@ int main(int argc, const char* argv[]) {
  }

  if (ok) {
-    fprintf(stderr, "[%d frames, %u bytes].\n",
-            pic_num, (unsigned int)webp_data.size);
+    fprintf(stderr, "[%d frames, %u bytes].\n", pic_num,
+            (unsigned int)webp_data.size);
  }
  WebPDataClear(&webp_data);
  ExUtilDeleteCommandLineArguments(&cmd_args);
--- a/examples/stopwatch.h
+++ b/examples/stopwatch.h
@@ -28,17 +28,13 @@ static WEBP_INLINE void StopwatchReset(Stopwatch* watch) {
 static WEBP_INLINE double StopwatchReadAndReset(Stopwatch* watch) {
  const LARGE_INTEGER old_value = *watch;
  LARGE_INTEGER freq;
-  if (!QueryPerformanceCounter(watch))
-    return 0.0;
-  if (!QueryPerformanceFrequency(&freq))
-    return 0.0;
-  if (freq.QuadPart == 0)
-    return 0.0;
+  if (!QueryPerformanceCounter(watch)) return 0.0;
+  if (!QueryPerformanceFrequency(&freq)) return 0.0;
+  if (freq.QuadPart == 0) return 0.0;
  return (watch->QuadPart - old_value.QuadPart) / (double)freq.QuadPart;
 }

-
-#else    /* !_WIN32 */
+#else                /* !_WIN32 */
 #include <string.h>  // memcpy
 #include <sys/time.h>

@@ -58,6 +54,6 @@ static WEBP_INLINE double StopwatchReadAndReset(Stopwatch* watch) {
  return delta_sec + delta_usec / 1000000.0;
 }

-#endif   /* _WIN32 */
+#endif /* _WIN32 */

 #endif  // WEBP_EXAMPLES_STOPWATCH_H_
--- a/examples/unicode.h
+++ b/examples/unicode.h
@@ -27,18 +27,20 @@
 #include <io.h>
 #include <wchar.h>
 #include <windows.h>
+
+// shellapi.h must be included after windows.h.
 #include <shellapi.h>

 // Create a wchar_t array containing Unicode parameters.
-#define INIT_WARGV(ARGC, ARGV)                                                \
-  int wargc;                                                                  \
-  const W_CHAR** const wargv =                                                \
-      (const W_CHAR**)CommandLineToArgvW(GetCommandLineW(), &wargc);          \
-  do {                                                                        \
-    if (wargv == NULL || wargc != (ARGC)) {                                   \
-      fprintf(stderr, "Error: Unable to get Unicode arguments.\n");           \
-      FREE_WARGV_AND_RETURN(-1);                                              \
-    }                                                                         \
+#define INIT_WARGV(ARGC, ARGV)                                       \
+  int wargc;                                                         \
+  const W_CHAR** const wargv =                                       \
+      (const W_CHAR**)CommandLineToArgvW(GetCommandLineW(), &wargc); \
+  do {                                                               \
+    if (wargv == NULL || wargc != (ARGC)) {                          \
+      fprintf(stderr, "Error: Unable to get Unicode arguments.\n");  \
+      FREE_WARGV_AND_RETURN(-1);                                     \
+    }                                                                \
  } while (0)

 // Use this to get a Unicode argument (e.g. file path).
@@ -48,7 +50,7 @@
 #define GET_WARGV_OR_NULL() wargv

 // Release resources. LocalFree() is needed after CommandLineToArgvW().
-#define FREE_WARGV() LOCAL_FREE((W_CHAR** const)wargv)
+#define FREE_WARGV() LOCAL_FREE((W_CHAR**)wargv)
 #define LOCAL_FREE(WARGV)                  \
  do {                                     \
    if ((WARGV) != NULL) LocalFree(WARGV); \
--- a/examples/unicode_gif.h
+++ b/examples/unicode_gif.h
@@ -28,6 +28,7 @@

 #include <gif_lib.h>
 #include <string.h>
+
 #include "./gifdec.h"

 #if !defined(STDIN_FILENO)
--- a/examples/vwebp.c
+++ b/examples/vwebp.c
@@ -38,12 +38,11 @@
 #include <qcms.h>
 #endif

-#include "webp/decode.h"
-#include "webp/demux.h"
-
 #include "../examples/example_util.h"
 #include "../imageio/imageio_util.h"
 #include "./unicode.h"
+#include "webp/decode.h"
+#include "webp/demux.h"

 #if defined(_MSC_VER) && _MSC_VER < 1900
 #define snprintf _snprintf
@@ -135,9 +134,8 @@ static int ApplyColorProfile(const WebPData* const profile,
  }

  qcms_profile_precache_output_transform(output_profile);
-  transform = qcms_transform_create(input_profile, input_type,
-                                    output_profile, output_type,
-                                    intent);
+  transform = qcms_transform_create(input_profile, input_type, output_profile,
+                                    output_type, intent);
  if (transform == NULL) {
    fprintf(stderr, "Error creating color transform!\n");
    goto Error;
@@ -149,7 +147,7 @@ static int ApplyColorProfile(const WebPData* const profile,
  }
  ok = 1;

- Error:
+Error:
  if (input_profile != NULL) qcms_profile_release(input_profile);
  if (output_profile != NULL) qcms_profile_release(output_profile);
  if (transform != NULL) qcms_transform_release(transform);
@@ -164,7 +162,7 @@ static int ApplyColorProfile(const WebPData* const profile,
 //------------------------------------------------------------------------------
 // File decoding

-static int Decode(void) {   // Fills kParams.curr_frame
+static int Decode(void) {  // Fills kParams.curr_frame
  const WebPIterator* const curr = &kParams.curr_frame;
  WebPDecoderConfig* const config = &kParams.config;
  WebPDecBuffer* const output_buffer = &config->output;
@@ -172,8 +170,8 @@ static int Decode(void) {   // Fills kParams.curr_frame

  ClearPreviousPic();
  output_buffer->colorspace = MODE_RGBA;
-  ok = (WebPDecode(curr->fragment.bytes, curr->fragment.size,
-                   config) == VP8_STATUS_OK);
+  ok = (WebPDecode(curr->fragment.bytes, curr->fragment.size, config) ==
+        VP8_STATUS_OK);
  if (!ok) {
    fprintf(stderr, "Decoding of frame #%d failed!\n", curr->frame_num);
  } else {
@@ -341,8 +339,7 @@ static void DrawBackground(void) {
    glPushMatrix();
    glLoadIdentity();
    glColor4f(GetColorf(kParams.bg_color, 16),  // BGRA from spec
-              GetColorf(kParams.bg_color, 8),
-              GetColorf(kParams.bg_color, 0),
+              GetColorf(kParams.bg_color, 8), GetColorf(kParams.bg_color, 0),
              GetColorf(kParams.bg_color, 24));
    glRecti(-1, -1, +1, +1);
    glPopMatrix();
@@ -402,8 +399,7 @@ static void HandleDisplay(void) {

  *prev = *curr;

-  glDrawPixels(pic->width, pic->height,
-               GL_RGBA, GL_UNSIGNED_BYTE,
+  glDrawPixels(pic->width, pic->height, GL_RGBA, GL_UNSIGNED_BYTE,
               (GLvoid*)pic->u.RGBA.rgba);
  if (kParams.print_info) {
    char tmp[32];
@@ -417,8 +413,8 @@ static void HandleDisplay(void) {
    glRasterPos2f(-0.95f, 0.80f);
    PrintString(tmp);
    if (curr->x_offset != 0 || curr->y_offset != 0) {
-      snprintf(tmp, sizeof(tmp), " (offset:%d,%d)",
-               curr->x_offset, curr->y_offset);
+      snprintf(tmp, sizeof(tmp), " (offset:%d,%d)", curr->x_offset,
+               curr->y_offset);
      glRasterPos2f(-0.95f, 0.70f);
      PrintString(tmp);
    }
@@ -568,11 +564,11 @@ int main(int argc, char* argv[]) {
  if (kParams.file_name == NULL) {
    printf("missing input file!!\n");
    Help();
-    FREE_WARGV_AND_RETURN(EXIT_SUCCESS);
+    FREE_WARGV_AND_RETURN(EXIT_FAILURE);
  }

-  if (!ImgIoUtilReadFile(kParams.file_name,
-                         &kParams.data.bytes, &kParams.data.size)) {
+  if (!ImgIoUtilReadFile(kParams.file_name, &kParams.data.bytes,
+                         &kParams.data.size)) {
    goto Error;
  }

@@ -603,7 +599,8 @@ int main(int argc, char* argv[]) {
    if (!WebPDemuxGetChunk(kParams.dmux, "ICCP", 1, &kParams.iccp)) goto Error;
    printf("VP8X: Found color profile\n");
 #else
-    fprintf(stderr, "Warning: color profile present, but qcms is unavailable!\n"
+    fprintf(stderr,
+            "Warning: color profile present, but qcms is unavailable!\n"
            "Build libqcms from Mozilla or Chromium and define WEBP_HAVE_QCMS "
            "before building.\n");
 #endif
@@ -614,8 +611,8 @@ int main(int argc, char* argv[]) {
  kParams.has_animation = (curr->num_frames > 1);
  kParams.loop_count = (int)WebPDemuxGetI(kParams.dmux, WEBP_FF_LOOP_COUNT);
  kParams.bg_color = WebPDemuxGetI(kParams.dmux, WEBP_FF_BACKGROUND_COLOR);
-  printf("VP8X: Found %d images in file (loop count = %d)\n",
-         curr->num_frames, kParams.loop_count);
+  printf("VP8X: Found %d images in file (loop count = %d)\n", curr->num_frames,
+         kParams.loop_count);

  // Decode first frame
  if (!Decode()) goto Error;
@@ -645,12 +642,12 @@ int main(int argc, char* argv[]) {
  ClearParams();
  FREE_WARGV_AND_RETURN(EXIT_SUCCESS);

- Error:
+Error:
  ClearParams();
  FREE_WARGV_AND_RETURN(EXIT_FAILURE);
 }

-#else   // !WEBP_HAVE_GL
+#else  // !WEBP_HAVE_GL

 int main(int argc, const char* argv[]) {
  fprintf(stderr, "OpenGL support not enabled in %s.\n", argv[0]);
--- a/examples/webpinfo.c
+++ b/examples/webpinfo.c
@@ -15,6 +15,7 @@
 #include <assert.h>
 #include <stdio.h>
 #include <stdlib.h>
+#include <string.h>

 #ifdef HAVE_CONFIG_H
 #include "webp/config.h"
@@ -25,6 +26,7 @@
 #include "webp/decode.h"
 #include "webp/format_constants.h"
 #include "webp/mux_types.h"
+#include "webp/types.h"

 #if defined(_MSC_VER) && _MSC_VER < 1900
 #define snprintf _snprintf
@@ -32,38 +34,26 @@

 #define LOG_ERROR(MESSAGE)                     \
  do {                                         \
-    if (webp_info->show_diagnosis_) {          \
+    if (webp_info->show_diagnosis) {           \
      fprintf(stderr, "Error: %s\n", MESSAGE); \
    }                                          \
  } while (0)

 #define LOG_WARN(MESSAGE)                        \
  do {                                           \
-    if (webp_info->show_diagnosis_) {            \
+    if (webp_info->show_diagnosis) {             \
      fprintf(stderr, "Warning: %s\n", MESSAGE); \
    }                                            \
-    ++webp_info->num_warnings_;                  \
+    ++webp_info->num_warnings;                   \
  } while (0)

-static const char* const kFormats[3] = {
-  "Unknown",
-  "Lossy",
-  "Lossless"
-};
+static const char* const kFormats[3] = {"Unknown", "Lossy", "Lossless"};

 static const char* const kLosslessTransforms[4] = {
-  "Predictor",
-  "Cross Color",
-  "Subtract Green",
-  "Color Indexing"
-};
+    "Predictor", "Cross Color", "Subtract Green", "Color Indexing"};

-static const char* const kAlphaFilterMethods[4] = {
-  "None",
-  "Horizontal",
-  "Vertical",
-  "Gradient"
-};
+static const char* const kAlphaFilterMethods[4] = {"None", "Horizontal",
+                                                   "Vertical", "Gradient"};

 typedef enum {
  WEBP_INFO_OK = 0,
@@ -90,36 +80,36 @@ typedef enum ChunkID {
 } ChunkID;

 typedef struct {
-  size_t start_;
-  size_t end_;
-  const uint8_t* buf_;
+  size_t start;
+  size_t end;
+  const uint8_t* buf;
 } MemBuffer;

 typedef struct {
-  size_t offset_;
-  size_t size_;
-  const uint8_t* payload_;
-  ChunkID id_;
+  size_t offset;
+  size_t size;
+  const uint8_t* payload;
+  ChunkID id;
 } ChunkData;

 typedef struct WebPInfo {
-  int canvas_width_;
-  int canvas_height_;
-  int loop_count_;
-  int num_frames_;
-  int chunk_counts_[CHUNK_TYPES];
-  int anmf_subchunk_counts_[3];  // 0 VP8; 1 VP8L; 2 ALPH.
-  uint32_t bgcolor_;
-  int feature_flags_;
-  int has_alpha_;
+  int canvas_width;
+  int canvas_height;
+  int loop_count;
+  int num_frames;
+  int chunk_counts[CHUNK_TYPES];
+  int anmf_subchunk_counts[3];  // 0 VP8; 1 VP8L; 2 ALPH.
+  uint32_t bgcolor;
+  int feature_flags;
+  int has_alpha;
  // Used for parsing ANMF chunks.
-  int frame_width_, frame_height_;
-  size_t anim_frame_data_size_;
-  int is_processing_anim_frame_, seen_alpha_subchunk_, seen_image_subchunk_;
+  int frame_width, frame_height;
+  size_t anim_frame_data_size;
+  int is_processing_anim_frame, seen_alpha_subchunk, seen_image_subchunk;
  // Print output control.
-  int quiet_, show_diagnosis_, show_summary_;
-  int num_warnings_;
-  int parse_bitstream_;
+  int quiet, show_diagnosis, show_summary;
+  int num_warnings;
+  int parse_bitstream;
 } WebPInfo;

 static void WebPInfoInit(WebPInfo* const webp_info) {
@@ -127,15 +117,15 @@ static void WebPInfoInit(WebPInfo* const webp_info) {
 }

 static const uint32_t kWebPChunkTags[CHUNK_TYPES] = {
-  MKFOURCC('V', 'P', '8', ' '),
-  MKFOURCC('V', 'P', '8', 'L'),
-  MKFOURCC('V', 'P', '8', 'X'),
-  MKFOURCC('A', 'L', 'P', 'H'),
-  MKFOURCC('A', 'N', 'I', 'M'),
-  MKFOURCC('A', 'N', 'M', 'F'),
-  MKFOURCC('I', 'C', 'C', 'P'),
-  MKFOURCC('E', 'X', 'I', 'F'),
-  MKFOURCC('X', 'M', 'P', ' '),
+    MKFOURCC('V', 'P', '8', ' '),  //
+    MKFOURCC('V', 'P', '8', 'L'),  //
+    MKFOURCC('V', 'P', '8', 'X'),  //
+    MKFOURCC('A', 'L', 'P', 'H'),  //
+    MKFOURCC('A', 'N', 'I', 'M'),  //
+    MKFOURCC('A', 'N', 'M', 'F'),  //
+    MKFOURCC('I', 'C', 'C', 'P'),  //
+    MKFOURCC('E', 'X', 'I', 'F'),  //
+    MKFOURCC('X', 'M', 'P', ' '),  //
 };

 // -----------------------------------------------------------------------------
@@ -185,25 +175,23 @@ static int ReadFileToWebPData(const char* const filename,
 // MemBuffer object.

 static void InitMemBuffer(MemBuffer* const mem, const WebPData* webp_data) {
-  mem->buf_ = webp_data->bytes;
-  mem->start_ = 0;
-  mem->end_ = webp_data->size;
+  mem->buf = webp_data->bytes;
+  mem->start = 0;
+  mem->end = webp_data->size;
 }

 static size_t MemDataSize(const MemBuffer* const mem) {
-  return (mem->end_ - mem->start_);
+  return (mem->end - mem->start);
 }

 static const uint8_t* GetBuffer(MemBuffer* const mem) {
-  return mem->buf_ + mem->start_;
+  return mem->buf + mem->start;
 }

-static void Skip(MemBuffer* const mem, size_t size) {
-  mem->start_ += size;
-}
+static void Skip(MemBuffer* const mem, size_t size) { mem->start += size; }

 static uint32_t ReadMemBufLE32(MemBuffer* const mem) {
-  const uint8_t* const data = mem->buf_ + mem->start_;
+  const uint8_t* const data = mem->buf + mem->start;
  const uint32_t val = GetLE32(data);
  assert(MemDataSize(mem) >= 4);
  Skip(mem, 4);
@@ -264,9 +252,10 @@ static WebPInfoStatus ParseLossySegmentHeader(const WebPInfo* const webp_info,
    int update_map, update_data;
    GET_BITS(update_map, 1);
    GET_BITS(update_data, 1);
-    printf("  Update map:       %d\n"
-           "  Update data:      %d\n",
-           update_map, update_data);
+    printf(
+        "  Update map:       %d\n"
+        "  Update data:      %d\n",
+        update_map, update_data);
    if (update_data) {
      int i, a_delta;
      int quantizer[4] = {0, 0, 0, 0};
@@ -296,8 +285,8 @@ static WebPInfoStatus ParseLossySegmentHeader(const WebPInfo* const webp_info,
        GET_BITS(bit, 1);
        if (bit) GET_BITS(prob_segment[i], 8);
      }
-      printf("  Prob segment:     %d %d %d\n",
-             prob_segment[0], prob_segment[1], prob_segment[2]);
+      printf("  Prob segment:     %d %d %d\n", prob_segment[0], prob_segment[1],
+             prob_segment[2]);
    }
  }
  return WEBP_INFO_OK;
@@ -334,8 +323,8 @@ static WebPInfoStatus ParseLossyFilterHeader(const WebPInfo* const webp_info,

 static WebPInfoStatus ParseLossyHeader(const ChunkData* const chunk_data,
                                       const WebPInfo* const webp_info) {
-  const uint8_t* data = chunk_data->payload_;
-  size_t data_size = chunk_data->size_ - CHUNK_HEADER_SIZE;
+  const uint8_t* data = chunk_data->payload;
+  size_t data_size = chunk_data->size - CHUNK_HEADER_SIZE;
  const uint32_t bits = (uint32_t)data[0] | (data[1] << 8) | (data[2] << 16);
  const int key_frame = !(bits & 1);
  const int profile = (bits >> 1) & 7;
@@ -347,7 +336,7 @@ static WebPInfoStatus ParseLossyHeader(const ChunkData* const chunk_data,
  int colorspace, clamp_type;
  printf("  Parsing lossy bitstream...\n");
  // Calling WebPGetFeatures() in ProcessImageChunk() should ensure this.
-  assert(chunk_data->size_ >= CHUNK_HEADER_SIZE + 10);
+  assert(chunk_data->size >= CHUNK_HEADER_SIZE + 10);
  if (profile > 3) {
    LOG_ERROR("Unknown profile.");
    return WEBP_INFO_BITSTREAM_ERROR;
@@ -369,12 +358,13 @@ static WebPInfoStatus ParseLossyHeader(const ChunkData* const chunk_data,
      LOG_ERROR("Invalid lossy bitstream signature.");
      return WEBP_INFO_BITSTREAM_ERROR;
    }
-    printf("  Width:            %d\n"
-           "  X scale:          %d\n"
-           "  Height:           %d\n"
-           "  Y scale:          %d\n",
-           ((data[4] << 8) | data[3]) & 0x3fff, data[4] >> 6,
-           ((data[6] << 8) | data[5]) & 0x3fff, data[6] >> 6);
+    printf(
+        "  Width:            %d\n"
+        "  X scale:          %d\n"
+        "  Height:           %d\n"
+        "  Y scale:          %d\n",
+        ((data[4] << 8) | data[3]) & 0x3fff, data[4] >> 6,
+        ((data[6] << 8) | data[5]) & 0x3fff, data[6] >> 6);
    data += 7;
    data_size -= 7;
  } else {
@@ -477,7 +467,7 @@ static int LLGetBits(const uint8_t* const data, size_t data_size, size_t nb,
 static WebPInfoStatus ParseLosslessTransform(WebPInfo* const webp_info,
                                             const uint8_t* const data,
                                             size_t data_size,
-                                             uint64_t* const  bit_pos) {
+                                             uint64_t* const bit_pos) {
  int use_transform, block_size, n_colors;
  LL_GET_BITS(use_transform, 1);
  printf("  Use transform:    %s\n", use_transform ? "Yes" : "No");
@@ -497,7 +487,8 @@ static WebPInfoStatus ParseLosslessTransform(WebPInfo* const webp_info,
        n_colors += 1;
        printf("  No. of colors:    %d\n", n_colors);
        break;
-      default: break;
+      default:
+        break;
    }
  }
  return WEBP_INFO_OK;
@@ -505,8 +496,8 @@ static WebPInfoStatus ParseLosslessTransform(WebPInfo* const webp_info,

 static WebPInfoStatus ParseLosslessHeader(const ChunkData* const chunk_data,
                                          WebPInfo* const webp_info) {
-  const uint8_t* data = chunk_data->payload_;
-  size_t data_size = chunk_data->size_ - CHUNK_HEADER_SIZE;
+  const uint8_t* data = chunk_data->payload;
+  size_t data_size = chunk_data->size - CHUNK_HEADER_SIZE;
  uint64_t bit_position = 0;
  uint64_t* const bit_pos = &bit_position;
  WebPInfoStatus status;
@@ -541,8 +532,8 @@ static WebPInfoStatus ParseLosslessHeader(const ChunkData* const chunk_data,

 static WebPInfoStatus ParseAlphaHeader(const ChunkData* const chunk_data,
                                       WebPInfo* const webp_info) {
-  const uint8_t* data = chunk_data->payload_;
-  size_t data_size = chunk_data->size_ - CHUNK_HEADER_SIZE;
+  const uint8_t* data = chunk_data->payload;
+  size_t data_size = chunk_data->size - CHUNK_HEADER_SIZE;
  if (data_size <= ALPHA_HEADER_LEN) {
    LOG_ERROR("Truncated ALPH chunk.");
    return WEBP_INFO_TRUNCATED_DATA;
@@ -554,8 +545,8 @@ static WebPInfoStatus ParseAlphaHeader(const ChunkData* const chunk_data,
    const int pre_processing = (data[0] >> 4) & 0x03;
    const int reserved_bits = (data[0] >> 6) & 0x03;
    printf("  Compression:      %d\n", compression_method);
-    printf("  Filter:           %s (%d)\n",
-           kAlphaFilterMethods[filter], filter);
+    printf("  Filter:           %s (%d)\n", kAlphaFilterMethods[filter],
+           filter);
    printf("  Pre-processing:   %d\n", pre_processing);
    if (compression_method > ALPHA_LOSSLESS_COMPRESSION) {
      LOG_ERROR("Invalid Alpha compression method.");
@@ -607,14 +598,14 @@ static WebPInfoStatus ParseRIFFHeader(WebPInfo* const webp_info,
    return WEBP_INFO_PARSE_ERROR;
  }
  riff_size += CHUNK_HEADER_SIZE;
-  if (!webp_info->quiet_) {
+  if (!webp_info->quiet) {
    printf("RIFF HEADER:\n");
    printf("  File size: %6d\n", (int)riff_size);
  }
-  if (riff_size < mem->end_) {
+  if (riff_size < mem->end) {
    LOG_WARN("RIFF size is smaller than the file size.");
-    mem->end_ = riff_size;
-  } else if (riff_size > mem->end_) {
+    mem->end = riff_size;
+  } else if (riff_size > mem->end) {
    LOG_ERROR("Truncated data detected when parsing RIFF payload.");
    return WEBP_INFO_TRUNCATED_DATA;
  }
@@ -630,7 +621,7 @@ static WebPInfoStatus ParseChunk(const WebPInfo* const webp_info,
    LOG_ERROR("Truncated data detected when parsing chunk header.");
    return WEBP_INFO_TRUNCATED_DATA;
  } else {
-    const size_t chunk_start_offset = mem->start_;
+    const size_t chunk_start_offset = mem->start;
    const uint32_t fourcc = ReadMemBufLE32(mem);
    const uint32_t payload_size = ReadMemBufLE32(mem);
    const uint32_t payload_size_padded = payload_size + (payload_size & 1);
@@ -640,18 +631,18 @@ static WebPInfoStatus ParseChunk(const WebPInfo* const webp_info,
      LOG_ERROR("Size of chunk payload is over limit.");
      return WEBP_INFO_INVALID_PARAM;
    }
-    if (payload_size_padded > MemDataSize(mem)){
+    if (payload_size_padded > MemDataSize(mem)) {
      LOG_ERROR("Truncated data detected when parsing chunk payload.");
      return WEBP_INFO_TRUNCATED_DATA;
    }
    for (i = 0; i < CHUNK_TYPES; ++i) {
      if (kWebPChunkTags[i] == fourcc) break;
    }
-    chunk_data->offset_ = chunk_start_offset;
-    chunk_data->size_ = chunk_size;
-    chunk_data->id_ = (ChunkID)i;
-    chunk_data->payload_ = GetBuffer(mem);
-    if (chunk_data->id_ == CHUNK_ANMF) {
+    chunk_data->offset = chunk_start_offset;
+    chunk_data->size = chunk_size;
+    chunk_data->id = (ChunkID)i;
+    chunk_data->payload = GetBuffer(mem);
+    if (chunk_data->id == CHUNK_ANMF) {
      if (payload_size != payload_size_padded) {
        LOG_ERROR("ANMF chunk size should always be even.");
        return WEBP_INFO_PARSE_ERROR;
@@ -670,39 +661,39 @@ static WebPInfoStatus ParseChunk(const WebPInfo* const webp_info,

 static WebPInfoStatus ProcessVP8XChunk(const ChunkData* const chunk_data,
                                       WebPInfo* const webp_info) {
-  const uint8_t* data = chunk_data->payload_;
-  if (webp_info->chunk_counts_[CHUNK_VP8] ||
-      webp_info->chunk_counts_[CHUNK_VP8L] ||
-      webp_info->chunk_counts_[CHUNK_VP8X]) {
+  const uint8_t* data = chunk_data->payload;
+  if (webp_info->chunk_counts[CHUNK_VP8] ||
+      webp_info->chunk_counts[CHUNK_VP8L] ||
+      webp_info->chunk_counts[CHUNK_VP8X]) {
    LOG_ERROR("Already seen a VP8/VP8L/VP8X chunk when parsing VP8X chunk.");
    return WEBP_INFO_PARSE_ERROR;
  }
-  if (chunk_data->size_ != VP8X_CHUNK_SIZE + CHUNK_HEADER_SIZE) {
+  if (chunk_data->size != VP8X_CHUNK_SIZE + CHUNK_HEADER_SIZE) {
    LOG_ERROR("Corrupted VP8X chunk.");
    return WEBP_INFO_PARSE_ERROR;
  }
-  ++webp_info->chunk_counts_[CHUNK_VP8X];
-  webp_info->feature_flags_ = *data;
+  ++webp_info->chunk_counts[CHUNK_VP8X];
+  webp_info->feature_flags = *data;
  data += 4;
-  webp_info->canvas_width_ = 1 + ReadLE24(&data);
-  webp_info->canvas_height_ = 1 + ReadLE24(&data);
-  if (!webp_info->quiet_) {
+  webp_info->canvas_width = 1 + ReadLE24(&data);
+  webp_info->canvas_height = 1 + ReadLE24(&data);
+  if (!webp_info->quiet) {
    printf("  ICCP: %d\n  Alpha: %d\n  EXIF: %d\n  XMP: %d\n  Animation: %d\n",
-           (webp_info->feature_flags_ & ICCP_FLAG) != 0,
-           (webp_info->feature_flags_ & ALPHA_FLAG) != 0,
-           (webp_info->feature_flags_ & EXIF_FLAG) != 0,
-           (webp_info->feature_flags_ & XMP_FLAG) != 0,
-           (webp_info->feature_flags_ & ANIMATION_FLAG) != 0);
-    printf("  Canvas size %d x %d\n",
-           webp_info->canvas_width_, webp_info->canvas_height_);
+           (webp_info->feature_flags & ICCP_FLAG) != 0,
+           (webp_info->feature_flags & ALPHA_FLAG) != 0,
+           (webp_info->feature_flags & EXIF_FLAG) != 0,
+           (webp_info->feature_flags & XMP_FLAG) != 0,
+           (webp_info->feature_flags & ANIMATION_FLAG) != 0);
+    printf("  Canvas size %d x %d\n", webp_info->canvas_width,
+           webp_info->canvas_height);
  }
-  if (webp_info->canvas_width_ > MAX_CANVAS_SIZE) {
+  if (webp_info->canvas_width > MAX_CANVAS_SIZE) {
    LOG_WARN("Canvas width is out of range in VP8X chunk.");
  }
-  if (webp_info->canvas_height_ > MAX_CANVAS_SIZE) {
+  if (webp_info->canvas_height > MAX_CANVAS_SIZE) {
    LOG_WARN("Canvas height is out of range in VP8X chunk.");
  }
-  if ((uint64_t)webp_info->canvas_width_ * webp_info->canvas_height_ >
+  if ((uint64_t)webp_info->canvas_width * webp_info->canvas_height >
      MAX_IMAGE_AREA) {
    LOG_WARN("Canvas area is out of range in VP8X chunk.");
  }
@@ -711,27 +702,25 @@ static WebPInfoStatus ProcessVP8XChunk(const ChunkData* const chunk_data,

 static WebPInfoStatus ProcessANIMChunk(const ChunkData* const chunk_data,
                                       WebPInfo* const webp_info) {
-  const uint8_t* data = chunk_data->payload_;
-  if (!webp_info->chunk_counts_[CHUNK_VP8X]) {
+  const uint8_t* data = chunk_data->payload;
+  if (!webp_info->chunk_counts[CHUNK_VP8X]) {
    LOG_ERROR("ANIM chunk detected before VP8X chunk.");
    return WEBP_INFO_PARSE_ERROR;
  }
-  if (chunk_data->size_ != ANIM_CHUNK_SIZE + CHUNK_HEADER_SIZE) {
+  if (chunk_data->size != ANIM_CHUNK_SIZE + CHUNK_HEADER_SIZE) {
    LOG_ERROR("Corrupted ANIM chunk.");
    return WEBP_INFO_PARSE_ERROR;
  }
-  webp_info->bgcolor_ = ReadLE32(&data);
-  webp_info->loop_count_ = ReadLE16(&data);
-  ++webp_info->chunk_counts_[CHUNK_ANIM];
-  if (!webp_info->quiet_) {
+  webp_info->bgcolor = ReadLE32(&data);
+  webp_info->loop_count = ReadLE16(&data);
+  ++webp_info->chunk_counts[CHUNK_ANIM];
+  if (!webp_info->quiet) {
    printf("  Background color:(ARGB) %02x %02x %02x %02x\n",
-           (webp_info->bgcolor_ >> 24) & 0xff,
-           (webp_info->bgcolor_ >> 16) & 0xff,
-           (webp_info->bgcolor_ >> 8) & 0xff,
-           webp_info->bgcolor_ & 0xff);
-    printf("  Loop count      : %d\n", webp_info->loop_count_);
+           (webp_info->bgcolor >> 24) & 0xff, (webp_info->bgcolor >> 16) & 0xff,
+           (webp_info->bgcolor >> 8) & 0xff, webp_info->bgcolor & 0xff);
+    printf("  Loop count      : %d\n", webp_info->loop_count);
  }
-  if (webp_info->loop_count_ > MAX_LOOP_COUNT) {
+  if (webp_info->loop_count > MAX_LOOP_COUNT) {
    LOG_WARN("Loop count is out of range in ANIM chunk.");
  }
  return WEBP_INFO_OK;
@@ -739,17 +728,17 @@ static WebPInfoStatus ProcessANIMChunk(const ChunkData* const chunk_data,

 static WebPInfoStatus ProcessANMFChunk(const ChunkData* const chunk_data,
                                       WebPInfo* const webp_info) {
-  const uint8_t* data = chunk_data->payload_;
+  const uint8_t* data = chunk_data->payload;
  int offset_x, offset_y, width, height, duration, blend, dispose, temp;
-  if (webp_info->is_processing_anim_frame_) {
+  if (webp_info->is_processing_anim_frame) {
    LOG_ERROR("ANMF chunk detected within another ANMF chunk.");
    return WEBP_INFO_PARSE_ERROR;
  }
-  if (!webp_info->chunk_counts_[CHUNK_ANIM]) {
+  if (!webp_info->chunk_counts[CHUNK_ANIM]) {
    LOG_ERROR("ANMF chunk detected before ANIM chunk.");
    return WEBP_INFO_PARSE_ERROR;
  }
-  if (chunk_data->size_ <= CHUNK_HEADER_SIZE + ANMF_CHUNK_SIZE) {
+  if (chunk_data->size <= CHUNK_HEADER_SIZE + ANMF_CHUNK_SIZE) {
    LOG_ERROR("Truncated data detected when parsing ANMF chunk.");
    return WEBP_INFO_TRUNCATED_DATA;
  }
@@ -761,11 +750,12 @@ static WebPInfoStatus ProcessANMFChunk(const ChunkData* const chunk_data,
  temp = *data;
  dispose = temp & 1;
  blend = (temp >> 1) & 1;
-  ++webp_info->chunk_counts_[CHUNK_ANMF];
-  if (!webp_info->quiet_) {
-    printf("  Offset_X: %d\n  Offset_Y: %d\n  Width: %d\n  Height: %d\n"
-           "  Duration: %d\n  Dispose: %d\n  Blend: %d\n",
-           offset_x, offset_y, width, height, duration, dispose, blend);
+  ++webp_info->chunk_counts[CHUNK_ANMF];
+  if (!webp_info->quiet) {
+    printf(
+        "  Offset_X: %d\n  Offset_Y: %d\n  Width: %d\n  Height: %d\n"
+        "  Duration: %d\n  Dispose: %d\n  Blend: %d\n",
+        offset_x, offset_y, width, height, duration, dispose, blend);
  }
  if (duration > MAX_DURATION) {
    LOG_ERROR("Invalid duration parameter in ANMF chunk.");
@@ -775,92 +765,92 @@ static WebPInfoStatus ProcessANMFChunk(const ChunkData* const chunk_data,
    LOG_ERROR("Invalid offset parameters in ANMF chunk.");
    return WEBP_INFO_INVALID_PARAM;
  }
-  if ((uint64_t)offset_x + width > (uint64_t)webp_info->canvas_width_ ||
-      (uint64_t)offset_y + height > (uint64_t)webp_info->canvas_height_) {
+  if ((uint64_t)offset_x + width > (uint64_t)webp_info->canvas_width ||
+      (uint64_t)offset_y + height > (uint64_t)webp_info->canvas_height) {
    LOG_ERROR("Frame exceeds canvas in ANMF chunk.");
    return WEBP_INFO_INVALID_PARAM;
  }
-  webp_info->is_processing_anim_frame_ = 1;
-  webp_info->seen_alpha_subchunk_ = 0;
-  webp_info->seen_image_subchunk_ = 0;
-  webp_info->frame_width_ = width;
-  webp_info->frame_height_ = height;
-  webp_info->anim_frame_data_size_ =
-      chunk_data->size_ - CHUNK_HEADER_SIZE - ANMF_CHUNK_SIZE;
+  webp_info->is_processing_anim_frame = 1;
+  webp_info->seen_alpha_subchunk = 0;
+  webp_info->seen_image_subchunk = 0;
+  webp_info->frame_width = width;
+  webp_info->frame_height = height;
+  webp_info->anim_frame_data_size =
+      chunk_data->size - CHUNK_HEADER_SIZE - ANMF_CHUNK_SIZE;
  return WEBP_INFO_OK;
 }

 static WebPInfoStatus ProcessImageChunk(const ChunkData* const chunk_data,
                                        WebPInfo* const webp_info) {
-  const uint8_t* data = chunk_data->payload_ - CHUNK_HEADER_SIZE;
+  const uint8_t* data = chunk_data->payload - CHUNK_HEADER_SIZE;
  WebPBitstreamFeatures features;
  const VP8StatusCode vp8_status =
-      WebPGetFeatures(data, chunk_data->size_, &features);
+      WebPGetFeatures(data, chunk_data->size, &features);
  if (vp8_status != VP8_STATUS_OK) {
    LOG_ERROR("VP8/VP8L bitstream error.");
    return WEBP_INFO_BITSTREAM_ERROR;
  }
-  if (!webp_info->quiet_) {
+  if (!webp_info->quiet) {
    assert(features.format >= 0 && features.format <= 2);
-    printf("  Width: %d\n  Height: %d\n  Alpha: %d\n  Animation: %d\n"
-           "  Format: %s (%d)\n",
-           features.width, features.height, features.has_alpha,
-           features.has_animation, kFormats[features.format], features.format);
+    printf(
+        "  Width: %d\n  Height: %d\n  Alpha: %d\n  Animation: %d\n"
+        "  Format: %s (%d)\n",
+        features.width, features.height, features.has_alpha,
+        features.has_animation, kFormats[features.format], features.format);
  }
-  if (webp_info->is_processing_anim_frame_) {
-    ++webp_info->anmf_subchunk_counts_[chunk_data->id_ == CHUNK_VP8 ? 0 : 1];
-    if (chunk_data->id_ == CHUNK_VP8L && webp_info->seen_alpha_subchunk_) {
+  if (webp_info->is_processing_anim_frame) {
+    ++webp_info->anmf_subchunk_counts[chunk_data->id == CHUNK_VP8 ? 0 : 1];
+    if (chunk_data->id == CHUNK_VP8L && webp_info->seen_alpha_subchunk) {
      LOG_ERROR("Both VP8L and ALPH sub-chunks are present in an ANMF chunk.");
      return WEBP_INFO_PARSE_ERROR;
    }
-    if (webp_info->frame_width_ != features.width ||
-        webp_info->frame_height_ != features.height) {
+    if (webp_info->frame_width != features.width ||
+        webp_info->frame_height != features.height) {
      LOG_ERROR("Frame size in VP8/VP8L sub-chunk differs from ANMF header.");
      return WEBP_INFO_PARSE_ERROR;
    }
-    if (webp_info->seen_image_subchunk_) {
+    if (webp_info->seen_image_subchunk) {
      LOG_ERROR("Consecutive VP8/VP8L sub-chunks in an ANMF chunk.");
      return WEBP_INFO_PARSE_ERROR;
    }
-    webp_info->seen_image_subchunk_ = 1;
+    webp_info->seen_image_subchunk = 1;
  } else {
-    if (webp_info->chunk_counts_[CHUNK_VP8] ||
-        webp_info->chunk_counts_[CHUNK_VP8L]) {
+    if (webp_info->chunk_counts[CHUNK_VP8] ||
+        webp_info->chunk_counts[CHUNK_VP8L]) {
      LOG_ERROR("Multiple VP8/VP8L chunks detected.");
      return WEBP_INFO_PARSE_ERROR;
    }
-    if (chunk_data->id_ == CHUNK_VP8L &&
-        webp_info->chunk_counts_[CHUNK_ALPHA]) {
+    if (chunk_data->id == CHUNK_VP8L && webp_info->chunk_counts[CHUNK_ALPHA]) {
      LOG_WARN("Both VP8L and ALPH chunks are detected.");
    }
-    if (webp_info->chunk_counts_[CHUNK_ANIM] ||
-        webp_info->chunk_counts_[CHUNK_ANMF]) {
+    if (webp_info->chunk_counts[CHUNK_ANIM] ||
+        webp_info->chunk_counts[CHUNK_ANMF]) {
      LOG_ERROR("VP8/VP8L chunk and ANIM/ANMF chunk are both detected.");
      return WEBP_INFO_PARSE_ERROR;
    }
-    if (webp_info->chunk_counts_[CHUNK_VP8X]) {
-      if (webp_info->canvas_width_ != features.width ||
-          webp_info->canvas_height_ != features.height) {
+    if (webp_info->chunk_counts[CHUNK_VP8X]) {
+      if (webp_info->canvas_width != features.width ||
+          webp_info->canvas_height != features.height) {
        LOG_ERROR("Image size in VP8/VP8L chunk differs from VP8X chunk.");
        return WEBP_INFO_PARSE_ERROR;
      }
    } else {
-      webp_info->canvas_width_ = features.width;
-      webp_info->canvas_height_ = features.height;
-      if (webp_info->canvas_width_ < 1 || webp_info->canvas_height_ < 1 ||
-          webp_info->canvas_width_ > MAX_CANVAS_SIZE ||
-          webp_info->canvas_height_ > MAX_CANVAS_SIZE ||
-          (uint64_t)webp_info->canvas_width_ * webp_info->canvas_height_ >
+      webp_info->canvas_width = features.width;
+      webp_info->canvas_height = features.height;
+      if (webp_info->canvas_width < 1 || webp_info->canvas_height < 1 ||
+          webp_info->canvas_width > MAX_CANVAS_SIZE ||
+          webp_info->canvas_height > MAX_CANVAS_SIZE ||
+          (uint64_t)webp_info->canvas_width * webp_info->canvas_height >
              MAX_IMAGE_AREA) {
        LOG_WARN("Invalid parameters in VP8/VP8L chunk.");
      }
    }
-    ++webp_info->chunk_counts_[chunk_data->id_];
+    ++webp_info->chunk_counts[chunk_data->id];
  }
-  ++webp_info->num_frames_;
-  webp_info->has_alpha_ |= features.has_alpha;
-  if (webp_info->parse_bitstream_) {
-    const int is_lossy = (chunk_data->id_ == CHUNK_VP8);
+  ++webp_info->num_frames;
+  webp_info->has_alpha |= features.has_alpha;
+  if (webp_info->parse_bitstream) {
+    const int is_lossy = (chunk_data->id == CHUNK_VP8);
    const WebPInfoStatus status =
        is_lossy ? ParseLossyHeader(chunk_data, webp_info)
                 : ParseLosslessHeader(chunk_data, webp_info);
@@ -871,41 +861,42 @@ static WebPInfoStatus ProcessImageChunk(const ChunkData* const chunk_data,

 static WebPInfoStatus ProcessALPHChunk(const ChunkData* const chunk_data,
                                       WebPInfo* const webp_info) {
-  if (webp_info->is_processing_anim_frame_) {
-    ++webp_info->anmf_subchunk_counts_[2];
-    if (webp_info->seen_alpha_subchunk_) {
+  if (webp_info->is_processing_anim_frame) {
+    ++webp_info->anmf_subchunk_counts[2];
+    if (webp_info->seen_alpha_subchunk) {
      LOG_ERROR("Consecutive ALPH sub-chunks in an ANMF chunk.");
      return WEBP_INFO_PARSE_ERROR;
    }
-    webp_info->seen_alpha_subchunk_ = 1;
+    webp_info->seen_alpha_subchunk = 1;

-    if (webp_info->seen_image_subchunk_) {
-      LOG_ERROR("ALPHA sub-chunk detected after VP8 sub-chunk "
-                "in an ANMF chunk.");
+    if (webp_info->seen_image_subchunk) {
+      LOG_ERROR(
+          "ALPHA sub-chunk detected after VP8 sub-chunk "
+          "in an ANMF chunk.");
      return WEBP_INFO_PARSE_ERROR;
    }
  } else {
-    if (webp_info->chunk_counts_[CHUNK_ANIM] ||
-        webp_info->chunk_counts_[CHUNK_ANMF]) {
+    if (webp_info->chunk_counts[CHUNK_ANIM] ||
+        webp_info->chunk_counts[CHUNK_ANMF]) {
      LOG_ERROR("ALPHA chunk and ANIM/ANMF chunk are both detected.");
      return WEBP_INFO_PARSE_ERROR;
    }
-    if (!webp_info->chunk_counts_[CHUNK_VP8X]) {
+    if (!webp_info->chunk_counts[CHUNK_VP8X]) {
      LOG_ERROR("ALPHA chunk detected before VP8X chunk.");
      return WEBP_INFO_PARSE_ERROR;
    }
-    if (webp_info->chunk_counts_[CHUNK_VP8]) {
+    if (webp_info->chunk_counts[CHUNK_VP8]) {
      LOG_ERROR("ALPHA chunk detected after VP8 chunk.");
      return WEBP_INFO_PARSE_ERROR;
    }
-    if (webp_info->chunk_counts_[CHUNK_ALPHA]) {
+    if (webp_info->chunk_counts[CHUNK_ALPHA]) {
      LOG_ERROR("Multiple ALPHA chunks detected.");
      return WEBP_INFO_PARSE_ERROR;
    }
-    ++webp_info->chunk_counts_[CHUNK_ALPHA];
+    ++webp_info->chunk_counts[CHUNK_ALPHA];
  }
-  webp_info->has_alpha_ = 1;
-  if (webp_info->parse_bitstream_) {
+  webp_info->has_alpha = 1;
+  if (webp_info->parse_bitstream) {
    const WebPInfoStatus status = ParseAlphaHeader(chunk_data, webp_info);
    if (status != WEBP_INFO_OK) return status;
  }
@@ -915,41 +906,40 @@ static WebPInfoStatus ProcessALPHChunk(const ChunkData* const chunk_data,
 static WebPInfoStatus ProcessICCPChunk(const ChunkData* const chunk_data,
                                       WebPInfo* const webp_info) {
  (void)chunk_data;
-  if (!webp_info->chunk_counts_[CHUNK_VP8X]) {
+  if (!webp_info->chunk_counts[CHUNK_VP8X]) {
    LOG_ERROR("ICCP chunk detected before VP8X chunk.");
    return WEBP_INFO_PARSE_ERROR;
  }
-  if (webp_info->chunk_counts_[CHUNK_VP8] ||
-      webp_info->chunk_counts_[CHUNK_VP8L] ||
-      webp_info->chunk_counts_[CHUNK_ANIM]) {
+  if (webp_info->chunk_counts[CHUNK_VP8] ||
+      webp_info->chunk_counts[CHUNK_VP8L] ||
+      webp_info->chunk_counts[CHUNK_ANIM]) {
    LOG_ERROR("ICCP chunk detected after image data.");
    return WEBP_INFO_PARSE_ERROR;
  }
-  ++webp_info->chunk_counts_[CHUNK_ICCP];
+  ++webp_info->chunk_counts[CHUNK_ICCP];
  return WEBP_INFO_OK;
 }

 static WebPInfoStatus ProcessChunk(const ChunkData* const chunk_data,
                                   WebPInfo* const webp_info) {
  WebPInfoStatus status = WEBP_INFO_OK;
-  ChunkID id = chunk_data->id_;
-  if (chunk_data->id_ == CHUNK_UNKNOWN) {
+  ChunkID id = chunk_data->id;
+  if (chunk_data->id == CHUNK_UNKNOWN) {
    char error_message[50];
    snprintf(error_message, 50, "Unknown chunk at offset %6d, length %6d",
-            (int)chunk_data->offset_, (int)chunk_data->size_);
+             (int)chunk_data->offset, (int)chunk_data->size);
    LOG_WARN(error_message);
  } else {
-    if (!webp_info->quiet_) {
+    if (!webp_info->quiet) {
      char tag[4];
-      uint32_t fourcc = kWebPChunkTags[chunk_data->id_];
+      uint32_t fourcc = kWebPChunkTags[chunk_data->id];
 #ifdef WORDS_BIGENDIAN
      fourcc = (fourcc >> 24) | ((fourcc >> 8) & 0xff00) |
               ((fourcc << 8) & 0xff0000) | (fourcc << 24);
 #endif
      memcpy(tag, &fourcc, sizeof(tag));
-      printf("Chunk %c%c%c%c at offset %6d, length %6d\n",
-             tag[0], tag[1], tag[2], tag[3], (int)chunk_data->offset_,
-             (int)chunk_data->size_);
+      printf("Chunk %c%c%c%c at offset %6d, length %6d\n", tag[0], tag[1],
+             tag[2], tag[3], (int)chunk_data->offset, (int)chunk_data->size);
    }
  }
  switch (id) {
@@ -974,21 +964,21 @@ static WebPInfoStatus ProcessChunk(const ChunkData* const chunk_data,
      break;
    case CHUNK_EXIF:
    case CHUNK_XMP:
-      ++webp_info->chunk_counts_[id];
+      ++webp_info->chunk_counts[id];
      break;
    case CHUNK_UNKNOWN:
    default:
      break;
  }
-  if (webp_info->is_processing_anim_frame_ && id != CHUNK_ANMF) {
-    if (webp_info->anim_frame_data_size_ == chunk_data->size_) {
-      if (!webp_info->seen_image_subchunk_) {
+  if (webp_info->is_processing_anim_frame && id != CHUNK_ANMF) {
+    if (webp_info->anim_frame_data_size == chunk_data->size) {
+      if (!webp_info->seen_image_subchunk) {
        LOG_ERROR("No VP8/VP8L chunk detected in an ANMF chunk.");
        return WEBP_INFO_PARSE_ERROR;
      }
-      webp_info->is_processing_anim_frame_ = 0;
-    } else if (webp_info->anim_frame_data_size_ > chunk_data->size_) {
-      webp_info->anim_frame_data_size_ -= chunk_data->size_;
+      webp_info->is_processing_anim_frame = 0;
+    } else if (webp_info->anim_frame_data_size > chunk_data->size) {
+      webp_info->anim_frame_data_size -= chunk_data->size;
    } else {
      LOG_ERROR("Truncated data detected when parsing ANMF chunk.");
      return WEBP_INFO_TRUNCATED_DATA;
@@ -998,55 +988,55 @@ static WebPInfoStatus ProcessChunk(const ChunkData* const chunk_data,
 }

 static WebPInfoStatus Validate(WebPInfo* const webp_info) {
-  if (webp_info->num_frames_ < 1) {
+  if (webp_info->num_frames < 1) {
    LOG_ERROR("No image/frame detected.");
    return WEBP_INFO_MISSING_DATA;
  }
-  if (webp_info->chunk_counts_[CHUNK_VP8X]) {
-    const int iccp = !!(webp_info->feature_flags_ & ICCP_FLAG);
-    const int exif = !!(webp_info->feature_flags_ & EXIF_FLAG);
-    const int xmp = !!(webp_info->feature_flags_ & XMP_FLAG);
-    const int animation = !!(webp_info->feature_flags_ & ANIMATION_FLAG);
-    const int alpha = !!(webp_info->feature_flags_ & ALPHA_FLAG);
-    if (!alpha && webp_info->has_alpha_) {
+  if (webp_info->chunk_counts[CHUNK_VP8X]) {
+    const int iccp = !!(webp_info->feature_flags & ICCP_FLAG);
+    const int exif = !!(webp_info->feature_flags & EXIF_FLAG);
+    const int xmp = !!(webp_info->feature_flags & XMP_FLAG);
+    const int animation = !!(webp_info->feature_flags & ANIMATION_FLAG);
+    const int alpha = !!(webp_info->feature_flags & ALPHA_FLAG);
+    if (!alpha && webp_info->has_alpha) {
      LOG_ERROR("Unexpected alpha data detected.");
      return WEBP_INFO_PARSE_ERROR;
    }
-    if (alpha && !webp_info->has_alpha_) {
+    if (alpha && !webp_info->has_alpha) {
      LOG_WARN("Alpha flag is set with no alpha data present.");
    }
-    if (iccp && !webp_info->chunk_counts_[CHUNK_ICCP]) {
+    if (iccp && !webp_info->chunk_counts[CHUNK_ICCP]) {
      LOG_ERROR("Missing ICCP chunk.");
      return WEBP_INFO_MISSING_DATA;
    }
-    if (exif && !webp_info->chunk_counts_[CHUNK_EXIF]) {
+    if (exif && !webp_info->chunk_counts[CHUNK_EXIF]) {
      LOG_ERROR("Missing EXIF chunk.");
      return WEBP_INFO_MISSING_DATA;
    }
-    if (xmp && !webp_info->chunk_counts_[CHUNK_XMP]) {
+    if (xmp && !webp_info->chunk_counts[CHUNK_XMP]) {
      LOG_ERROR("Missing XMP chunk.");
      return WEBP_INFO_MISSING_DATA;
    }
-    if (!iccp && webp_info->chunk_counts_[CHUNK_ICCP]) {
+    if (!iccp && webp_info->chunk_counts[CHUNK_ICCP]) {
      LOG_ERROR("Unexpected ICCP chunk detected.");
      return WEBP_INFO_PARSE_ERROR;
    }
-    if (!exif && webp_info->chunk_counts_[CHUNK_EXIF]) {
+    if (!exif && webp_info->chunk_counts[CHUNK_EXIF]) {
      LOG_ERROR("Unexpected EXIF chunk detected.");
      return WEBP_INFO_PARSE_ERROR;
    }
-    if (!xmp && webp_info->chunk_counts_[CHUNK_XMP]) {
+    if (!xmp && webp_info->chunk_counts[CHUNK_XMP]) {
      LOG_ERROR("Unexpected XMP chunk detected.");
      return WEBP_INFO_PARSE_ERROR;
    }
    // Incomplete animation frame.
-    if (webp_info->is_processing_anim_frame_) return WEBP_INFO_MISSING_DATA;
-    if (!animation && webp_info->num_frames_ > 1) {
+    if (webp_info->is_processing_anim_frame) return WEBP_INFO_MISSING_DATA;
+    if (!animation && webp_info->num_frames > 1) {
      LOG_ERROR("More than 1 frame detected in non-animation file.");
      return WEBP_INFO_PARSE_ERROR;
    }
-    if (animation && (!webp_info->chunk_counts_[CHUNK_ANIM] ||
-        !webp_info->chunk_counts_[CHUNK_ANMF])) {
+    if (animation && (!webp_info->chunk_counts[CHUNK_ANIM] ||
+                      !webp_info->chunk_counts[CHUNK_ANMF])) {
      LOG_ERROR("No ANIM/ANMF chunk detected in animation file.");
      return WEBP_INFO_PARSE_ERROR;
    }
@@ -1057,17 +1047,17 @@ static WebPInfoStatus Validate(WebPInfo* const webp_info) {
 static void ShowSummary(const WebPInfo* const webp_info) {
  int i;
  printf("Summary:\n");
-  printf("Number of frames: %d\n", webp_info->num_frames_);
-  printf("Chunk type  :  VP8 VP8L VP8X ALPH ANIM ANMF(VP8 /VP8L/ALPH) ICCP "
+  printf("Number of frames: %d\n", webp_info->num_frames);
+  printf(
+      "Chunk type  :  VP8 VP8L VP8X ALPH ANIM ANMF(VP8 /VP8L/ALPH) ICCP "
      "EXIF  XMP\n");
  printf("Chunk counts: ");
  for (i = 0; i < CHUNK_TYPES; ++i) {
-    printf("%4d ", webp_info->chunk_counts_[i]);
+    printf("%4d ", webp_info->chunk_counts[i]);
    if (i == CHUNK_ANMF) {
-      printf("%4d %4d %4d  ",
-             webp_info->anmf_subchunk_counts_[0],
-             webp_info->anmf_subchunk_counts_[1],
-             webp_info->anmf_subchunk_counts_[2]);
+      printf("%4d %4d %4d  ", webp_info->anmf_subchunk_counts[0],
+             webp_info->anmf_subchunk_counts[1],
+             webp_info->anmf_subchunk_counts[2]);
    }
  }
  printf("\n");
@@ -1090,35 +1080,36 @@ static WebPInfoStatus AnalyzeWebP(WebPInfo* const webp_info,
    webp_info_status = ProcessChunk(&chunk_data, webp_info);
  }
  if (webp_info_status != WEBP_INFO_OK) goto Error;
-  if (webp_info->show_summary_) ShowSummary(webp_info);
+  if (webp_info->show_summary) ShowSummary(webp_info);

  //  Final check.
  webp_info_status = Validate(webp_info);

- Error:
-  if (!webp_info->quiet_) {
+Error:
+  if (!webp_info->quiet) {
    if (webp_info_status == WEBP_INFO_OK) {
      printf("No error detected.\n");
    } else {
      printf("Errors detected.\n");
    }
-    if (webp_info->num_warnings_ > 0) {
-      printf("There were %d warning(s).\n", webp_info->num_warnings_);
+    if (webp_info->num_warnings > 0) {
+      printf("There were %d warning(s).\n", webp_info->num_warnings);
    }
  }
  return webp_info_status;
 }

 static void Help(void) {
-  printf("Usage: webpinfo [options] in_files\n"
-         "Note: there could be multiple input files;\n"
-         "      options must come before input files.\n"
-         "Options:\n"
-         "  -version ........... Print version number and exit.\n"
-         "  -quiet ............. Do not show chunk parsing information.\n"
-         "  -diag .............. Show parsing error diagnosis.\n"
-         "  -summary ........... Show chunk stats summary.\n"
-         "  -bitstream_info .... Parse bitstream header.\n");
+  printf(
+      "Usage: webpinfo [options] in_files\n"
+      "Note: there could be multiple input files;\n"
+      "      options must come before input files.\n"
+      "Options:\n"
+      "  -version ........... Print version number and exit.\n"
+      "  -quiet ............. Do not show chunk parsing information.\n"
+      "  -diag .............. Show parsing error diagnosis.\n"
+      "  -summary ........... Show chunk stats summary.\n"
+      "  -bitstream_info .... Parse bitstream header.\n");
 }

 // Returns EXIT_SUCCESS on success, EXIT_FAILURE on failure.
@@ -1132,7 +1123,7 @@ int main(int argc, const char* argv[]) {

  if (argc == 1) {
    Help();
-    FREE_WARGV_AND_RETURN(EXIT_SUCCESS);
+    FREE_WARGV_AND_RETURN(EXIT_FAILURE);
  }

  // Parse command-line input.
@@ -1151,8 +1142,8 @@ int main(int argc, const char* argv[]) {
      parse_bitstream = 1;
    } else if (!strcmp(argv[c], "-version")) {
      const int version = WebPGetDecoderVersion();
-      printf("WebP Decoder version: %d.%d.%d\n",
-             (version >> 16) & 0xff, (version >> 8) & 0xff, version & 0xff);
+      printf("WebP Decoder version: %d.%d.%d\n", (version >> 16) & 0xff,
+             (version >> 8) & 0xff, version & 0xff);
      FREE_WARGV_AND_RETURN(EXIT_SUCCESS);
    } else {  // Assume the remaining are all input files.
      break;
@@ -1169,10 +1160,10 @@ int main(int argc, const char* argv[]) {
    WebPData webp_data;
    const W_CHAR* in_file = NULL;
    WebPInfoInit(&webp_info);
-    webp_info.quiet_ = quiet;
-    webp_info.show_diagnosis_ = show_diag;
-    webp_info.show_summary_ = show_summary;
-    webp_info.parse_bitstream_ = parse_bitstream;
+    webp_info.quiet = quiet;
+    webp_info.show_diagnosis = show_diag;
+    webp_info.show_summary = show_summary;
+    webp_info.parse_bitstream = parse_bitstream;
    in_file = GET_WARGV(argv, c);
    if (in_file == NULL ||
        !ReadFileToWebPData((const char*)in_file, &webp_data)) {
@@ -1180,7 +1171,7 @@ int main(int argc, const char* argv[]) {
      WFPRINTF(stderr, "Failed to open input file %s.\n", in_file);
      continue;
    }
-    if (!webp_info.quiet_) WPRINTF("File: %s\n", in_file);
+    if (!webp_info.quiet) WPRINTF("File: %s\n", in_file);
    webp_info_status = AnalyzeWebP(&webp_info, &webp_data);
    WebPDataClear(&webp_data);
  }
--- a/examples/webpmux.c
+++ b/examples/webpmux.c
@@ -60,11 +60,13 @@
 #include <stdlib.h>
 #include <string.h>

-#include "webp/decode.h"
-#include "webp/mux.h"
 #include "../examples/example_util.h"
 #include "../imageio/imageio_util.h"
 #include "./unicode.h"
+#include "webp/decode.h"
+#include "webp/mux.h"
+#include "webp/mux_types.h"
+#include "webp/types.h"

 //------------------------------------------------------------------------------
 // Config object to parse command-line arguments.
@@ -87,9 +89,9 @@ typedef enum {
 } FeatureSubType;

 typedef struct {
-  FeatureSubType subtype_;
-  const char* filename_;
-  const char* params_;
+  FeatureSubType subtype;
+  const char* filename;
+  const char* params;
 } FeatureArg;

 typedef enum {
@@ -104,24 +106,21 @@ typedef enum {
  LAST_FEATURE
 } FeatureType;

-static const char* const kFourccList[LAST_FEATURE] = {
-  NULL, "EXIF", "XMP ", "ICCP", "ANMF"
-};
+static const char* const kFourccList[LAST_FEATURE] = {NULL, "EXIF", "XMP ",
+                                                      "ICCP", "ANMF"};

 static const char* const kDescriptions[LAST_FEATURE] = {
-  NULL, "EXIF metadata", "XMP metadata", "ICC profile",
-  "Animation frame"
-};
+    NULL, "EXIF metadata", "XMP metadata", "ICC profile", "Animation frame"};

 typedef struct {
-  CommandLineArguments cmd_args_;
+  CommandLineArguments cmd_args;

-  ActionType action_type_;
-  const char* input_;
-  const char* output_;
-  FeatureType type_;
-  FeatureArg* args_;
-  int arg_count_;
+  ActionType action_type;
+  const char* input;
+  const char* output;
+  FeatureType type;
+  FeatureArg* args;
+  int arg_count;
 } Config;

 //------------------------------------------------------------------------------
@@ -132,8 +131,8 @@ static int CountOccurrences(const CommandLineArguments* const args,
  int i;
  int num_occurences = 0;

-  for (i = 0; i < args->argc_; ++i) {
-    if (!strcmp(args->argv_[i], arg)) {
+  for (i = 0; i < args->argc; ++i) {
+    if (!strcmp(args->argv[i], arg)) {
      ++num_occurences;
    }
  }
@@ -141,50 +140,49 @@ static int CountOccurrences(const CommandLineArguments* const args,
 }

 static const char* const kErrorMessages[-WEBP_MUX_NOT_ENOUGH_DATA + 1] = {
-  "WEBP_MUX_NOT_FOUND", "WEBP_MUX_INVALID_ARGUMENT", "WEBP_MUX_BAD_DATA",
-  "WEBP_MUX_MEMORY_ERROR", "WEBP_MUX_NOT_ENOUGH_DATA"
-};
+    "WEBP_MUX_NOT_FOUND", "WEBP_MUX_INVALID_ARGUMENT", "WEBP_MUX_BAD_DATA",
+    "WEBP_MUX_MEMORY_ERROR", "WEBP_MUX_NOT_ENOUGH_DATA"};

 static const char* ErrorString(WebPMuxError err) {
  assert(err <= WEBP_MUX_NOT_FOUND && err >= WEBP_MUX_NOT_ENOUGH_DATA);
  return kErrorMessages[-err];
 }

-#define RETURN_IF_ERROR(ERR_MSG)                                     \
-  do {                                                               \
-    if (err != WEBP_MUX_OK) {                                        \
-      fprintf(stderr, ERR_MSG);                                      \
-      return err;                                                    \
-    }                                                                \
+#define RETURN_IF_ERROR(ERR_MSG) \
+  do {                           \
+    if (err != WEBP_MUX_OK) {    \
+      fprintf(stderr, ERR_MSG);  \
+      return err;                \
+    }                            \
  } while (0)

-#define RETURN_IF_ERROR3(ERR_MSG, FORMAT_STR1, FORMAT_STR2)          \
-  do {                                                               \
-    if (err != WEBP_MUX_OK) {                                        \
-      fprintf(stderr, ERR_MSG, FORMAT_STR1, FORMAT_STR2);            \
-      return err;                                                    \
-    }                                                                \
+#define RETURN_IF_ERROR3(ERR_MSG, FORMAT_STR1, FORMAT_STR2) \
+  do {                                                      \
+    if (err != WEBP_MUX_OK) {                               \
+      fprintf(stderr, ERR_MSG, FORMAT_STR1, FORMAT_STR2);   \
+      return err;                                           \
+    }                                                       \
  } while (0)

-#define ERROR_GOTO1(ERR_MSG, LABEL)                                  \
-  do {                                                               \
-    fprintf(stderr, ERR_MSG);                                        \
-    ok = 0;                                                          \
-    goto LABEL;                                                      \
+#define ERROR_GOTO1(ERR_MSG, LABEL) \
+  do {                              \
+    fprintf(stderr, ERR_MSG);       \
+    ok = 0;                         \
+    goto LABEL;                     \
  } while (0)

-#define ERROR_GOTO2(ERR_MSG, FORMAT_STR, LABEL)                      \
-  do {                                                               \
-    fprintf(stderr, ERR_MSG, FORMAT_STR);                            \
-    ok = 0;                                                          \
-    goto LABEL;                                                      \
+#define ERROR_GOTO2(ERR_MSG, FORMAT_STR, LABEL) \
+  do {                                          \
+    fprintf(stderr, ERR_MSG, FORMAT_STR);       \
+    ok = 0;                                     \
+    goto LABEL;                                 \
  } while (0)

-#define ERROR_GOTO3(ERR_MSG, FORMAT_STR1, FORMAT_STR2, LABEL)        \
-  do {                                                               \
-    fprintf(stderr, ERR_MSG, FORMAT_STR1, FORMAT_STR2);              \
-    ok = 0;                                                          \
-    goto LABEL;                                                      \
+#define ERROR_GOTO3(ERR_MSG, FORMAT_STR1, FORMAT_STR2, LABEL) \
+  do {                                                        \
+    fprintf(stderr, ERR_MSG, FORMAT_STR1, FORMAT_STR2);       \
+    ok = 0;                                                   \
+    goto LABEL;                                               \
  } while (0)

 static WebPMuxError DisplayInfo(const WebPMux* mux) {
@@ -206,10 +204,10 @@ static WebPMuxError DisplayInfo(const WebPMux* mux) {
  // Print the features present.
  printf("Features present:");
  if (flag & ANIMATION_FLAG) printf(" animation");
-  if (flag & ICCP_FLAG)      printf(" ICC profile");
-  if (flag & EXIF_FLAG)      printf(" EXIF metadata");
-  if (flag & XMP_FLAG)       printf(" XMP metadata");
-  if (flag & ALPHA_FLAG)     printf(" transparency");
+  if (flag & ICCP_FLAG) printf(" ICC profile");
+  if (flag & EXIF_FLAG) printf(" EXIF metadata");
+  if (flag & XMP_FLAG) printf(" XMP metadata");
+  if (flag & ALPHA_FLAG) printf(" transparency");
  printf("\n");

  if (flag & ANIMATION_FLAG) {
@@ -220,8 +218,8 @@ static WebPMuxError DisplayInfo(const WebPMux* mux) {
    WebPMuxAnimParams params;
    err = WebPMuxGetAnimationParams(mux, &params);
    assert(err == WEBP_MUX_OK);
-    printf("Background color : 0x%.8X  Loop Count : %d\n",
-           params.bgcolor, params.loop_count);
+    printf("Background color : 0x%.8X  Loop Count : %d\n", params.bgcolor,
+           params.loop_count);

    err = WebPMuxNumChunks(mux, id, &nFrames);
    assert(err == WEBP_MUX_OK);
@@ -253,9 +251,9 @@ static WebPMuxError DisplayInfo(const WebPMux* mux) {
            printf("%8d %10s %5s ", frame.duration, dispose, blend);
          }
          printf("%10d %11s\n", (int)frame.bitstream.size,
-                 (features.format == 1) ? "lossy" :
-                 (features.format == 2) ? "lossless" :
-                                          "undefined");
+                 (features.format == 1)   ? "lossy"
+                 : (features.format == 2) ? "lossless"
+                                          : "undefined");
        }
        WebPDataClear(&frame.bitstream);
        RETURN_IF_ERROR3("Failed to retrieve %s#%d\n", type_str, i);
@@ -303,8 +301,9 @@ static void PrintHelp(void) {
  printf("       webpmux -duration DURATION_OPTIONS [-duration ...]\n");
  printf("               INPUT -o OUTPUT\n");
  printf("       webpmux -strip STRIP_OPTIONS INPUT -o OUTPUT\n");
-  printf("       webpmux -frame FRAME_OPTIONS [-frame...] [-loop LOOP_COUNT]"
-         "\n");
+  printf(
+      "       webpmux -frame FRAME_OPTIONS [-frame...] [-loop LOOP_COUNT]"
+      "\n");
  printf("               [-bgcolor BACKGROUND_COLOR] -o OUTPUT\n");
  printf("       webpmux -info INPUT\n");
  printf("       webpmux [-h|-help]\n");
@@ -358,8 +357,9 @@ static void PrintHelp(void) {
  printf("             'di' is the pause duration before next frame,\n");
  printf("             'xi','yi' specify the image offset for this frame,\n");
  printf("             'mi' is the dispose method for this frame (0 or 1),\n");
-  printf("             'bi' is the blending method for this frame (+b or -b)"
-         "\n");
+  printf(
+      "             'bi' is the blending method for this frame (+b or -b)"
+      "\n");

  printf("\n");
  printf("LOOP_COUNT:\n");
@@ -370,27 +370,33 @@ static void PrintHelp(void) {
  printf("BACKGROUND_COLOR:\n");
  printf(" Background color of the canvas.\n");
  printf("  A,R,G,B\n");
-  printf("  where:    'A', 'R', 'G' and 'B' are integers in the range 0 to 255 "
-         "specifying\n");
-  printf("            the Alpha, Red, Green and Blue component values "
-         "respectively\n");
+  printf(
+      "  where:    'A', 'R', 'G' and 'B' are integers in the range 0 to 255 "
+      "specifying\n");
+  printf(
+      "            the Alpha, Red, Green and Blue component values "
+      "respectively\n");
  printf("            [Default: 255,255,255,255]\n");

  printf("\nINPUT & OUTPUT are in WebP format.\n");

  printf("\nNote: The nature of EXIF, XMP and ICC data is not checked");
  printf(" and is assumed to be\nvalid.\n");
-  printf("\nNote: if a single file name is passed as the argument, the "
-         "arguments will be\n");
-  printf("tokenized from this file. The file name must not start with "
-         "the character '-'.\n");
+  printf(
+      "\nNote: if a single file name is passed as the argument, the "
+      "arguments will be\n");
+  printf(
+      "tokenized from this file. The file name must not start with "
+      "the character '-'.\n");
 }

 static void WarnAboutOddOffset(const WebPMuxFrameInfo* const info) {
  if ((info->x_offset | info->y_offset) & 1) {
-    fprintf(stderr, "Warning: odd offsets will be snapped to even values"
-            " (%d, %d) -> (%d, %d)\n", info->x_offset, info->y_offset,
-            info->x_offset & ~1, info->y_offset & ~1);
+    fprintf(stderr,
+            "Warning: odd offsets will be snapped to even values"
+            " (%d, %d) -> (%d, %d)\n",
+            info->x_offset, info->y_offset, info->x_offset & ~1,
+            info->y_offset & ~1);
  }
 }

@@ -418,8 +424,8 @@ static int WriteData(const char* filename, const WebPData* const webpdata) {
  if (fwrite(webpdata->bytes, webpdata->size, 1, fout) != 1) {
    WFPRINTF(stderr, "Error writing file %s!\n", (const W_CHAR*)filename);
  } else {
-    WFPRINTF(stderr, "Saved file %s (%d bytes)\n",
-             (const W_CHAR*)filename, (int)webpdata->size);
+    WFPRINTF(stderr, "Saved file %s (%d bytes)\n", (const W_CHAR*)filename,
+             (int)webpdata->size);
    ok = 1;
  }
  if (fout != stdout) fclose(fout);
@@ -452,8 +458,8 @@ static WebPMux* DuplicateMuxHeader(const WebPMux* const mux) {
  if (err == WEBP_MUX_OK) {
    err = WebPMuxSetAnimationParams(new_mux, &p);
    if (err != WEBP_MUX_OK) {
-      ERROR_GOTO2("Error (%s) handling animation params.\n",
-                  ErrorString(err), End);
+      ERROR_GOTO2("Error (%s) handling animation params.\n", ErrorString(err),
+                  End);
    }
  } else {
    /* it might not be an animation. Just keep moving. */
@@ -471,7 +477,7 @@ static WebPMux* DuplicateMuxHeader(const WebPMux* const mux) {
    }
  }

- End:
+End:
  if (!ok) {
    WebPMuxDelete(new_mux);
    new_mux = NULL;
@@ -509,8 +515,7 @@ static int ParseFrameArgs(const char* args, WebPMuxFrameInfo* const info) {

  if (blend_method != 'b') return 0;
  if (plus_minus != '-' && plus_minus != '+') return 0;
-  info->blend_method =
-      (plus_minus == '+') ? WEBP_MUX_BLEND : WEBP_MUX_NO_BLEND;
+  info->blend_method = (plus_minus == '+') ? WEBP_MUX_BLEND : WEBP_MUX_NO_BLEND;
  return 1;
 }

@@ -527,8 +532,8 @@ static int ParseBgcolorArgs(const char* args, uint32_t* const bgcolor) {

 static void DeleteConfig(Config* const config) {
  if (config != NULL) {
-    free(config->args_);
-    ExUtilDeleteCommandLineArguments(&config->cmd_args_);
+    free(config->args);
+    ExUtilDeleteCommandLineArguments(&config->cmd_args);
    memset(config, 0, sizeof(*config));
  }
 }
@@ -582,8 +587,10 @@ static int ValidateCommandLine(const CommandLineArguments* const cmd_args,
  }

  if ((num_frame_args == 0) && (num_loop_args + num_bgcolor_args > 0)) {
-    ERROR_GOTO1("ERROR: Loop count and background color are relevant only in "
-                "case of animation.\n", ErrValidate);
+    ERROR_GOTO1(
+        "ERROR: Loop count and background color are relevant only in "
+        "case of animation.\n",
+        ErrValidate);
  }
  if (num_durations_args > 0 && num_frame_args != 0) {
    ERROR_GOTO1("ERROR: Can not combine -duration and -frame commands.\n",
@@ -601,20 +608,20 @@ static int ValidateCommandLine(const CommandLineArguments* const cmd_args,
    *num_feature_args = num_frame_args + num_loop_args + num_bgcolor_args;
  }

- ErrValidate:
+ErrValidate:
  return ok;
 }

-#define ACTION_IS_NIL (config->action_type_ == NIL_ACTION)
+#define ACTION_IS_NIL (config->action_type == NIL_ACTION)

-#define FEATURETYPE_IS_NIL (config->type_ == NIL_FEATURE)
+#define FEATURETYPE_IS_NIL (config->type == NIL_FEATURE)

-#define CHECK_NUM_ARGS_AT_LEAST(NUM, LABEL)                              \
-  do {                                                                   \
-    if (argc < i + (NUM)) {                                              \
-      fprintf(stderr, "ERROR: Too few arguments for '%s'.\n", argv[i]);  \
-      goto LABEL;                                                        \
-    }                                                                    \
+#define CHECK_NUM_ARGS_AT_LEAST(NUM, LABEL)                             \
+  do {                                                                  \
+    if (argc < i + (NUM)) {                                             \
+      fprintf(stderr, "ERROR: Too few arguments for '%s'.\n", argv[i]); \
+      goto LABEL;                                                       \
+    }                                                                   \
  } while (0)

 #define CHECK_NUM_ARGS_AT_MOST(NUM, LABEL)                               \
@@ -625,10 +632,10 @@ static int ValidateCommandLine(const CommandLineArguments* const cmd_args,
    }                                                                    \
  } while (0)

-#define CHECK_NUM_ARGS_EXACTLY(NUM, LABEL)                               \
-  do {                                                                   \
-    CHECK_NUM_ARGS_AT_LEAST(NUM, LABEL);                                 \
-    CHECK_NUM_ARGS_AT_MOST(NUM, LABEL);                                  \
+#define CHECK_NUM_ARGS_EXACTLY(NUM, LABEL) \
+  do {                                     \
+    CHECK_NUM_ARGS_AT_LEAST(NUM, LABEL);   \
+    CHECK_NUM_ARGS_AT_MOST(NUM, LABEL);    \
  } while (0)

 // Parses command-line arguments to fill up config object. Also performs some
@@ -637,117 +644,116 @@ static int ParseCommandLine(Config* config, const W_CHAR** const unicode_argv) {
  int i = 0;
  int feature_arg_index = 0;
  int ok = 1;
-  int argc = config->cmd_args_.argc_;
-  const char* const* argv = config->cmd_args_.argv_;
+  int argc = config->cmd_args.argc;
+  const char* const* argv = config->cmd_args.argv;
  // Unicode file paths will be used if available.
  const char* const* wargv =
      (unicode_argv != NULL) ? (const char**)(unicode_argv + 1) : argv;

  while (i < argc) {
-    FeatureArg* const arg = &config->args_[feature_arg_index];
+    FeatureArg* const arg = &config->args[feature_arg_index];
    if (argv[i][0] == '-') {  // One of the action types or output.
      if (!strcmp(argv[i], "-set")) {
        if (ACTION_IS_NIL) {
-          config->action_type_ = ACTION_SET;
+          config->action_type = ACTION_SET;
        } else {
          ERROR_GOTO1("ERROR: Multiple actions specified.\n", ErrParse);
        }
        ++i;
      } else if (!strcmp(argv[i], "-duration")) {
        CHECK_NUM_ARGS_AT_LEAST(2, ErrParse);
-        if (ACTION_IS_NIL || config->action_type_ == ACTION_DURATION) {
-          config->action_type_ = ACTION_DURATION;
+        if (ACTION_IS_NIL || config->action_type == ACTION_DURATION) {
+          config->action_type = ACTION_DURATION;
        } else {
          ERROR_GOTO1("ERROR: Multiple actions specified.\n", ErrParse);
        }
-        if (FEATURETYPE_IS_NIL || config->type_ == FEATURE_DURATION) {
-          config->type_ = FEATURE_DURATION;
+        if (FEATURETYPE_IS_NIL || config->type == FEATURE_DURATION) {
+          config->type = FEATURE_DURATION;
        } else {
          ERROR_GOTO1("ERROR: Multiple features specified.\n", ErrParse);
        }
-        arg->params_ = argv[i + 1];
+        arg->params = argv[i + 1];
        ++feature_arg_index;
        i += 2;
      } else if (!strcmp(argv[i], "-get")) {
        if (ACTION_IS_NIL) {
-          config->action_type_ = ACTION_GET;
+          config->action_type = ACTION_GET;
        } else {
          ERROR_GOTO1("ERROR: Multiple actions specified.\n", ErrParse);
        }
        ++i;
      } else if (!strcmp(argv[i], "-strip")) {
        if (ACTION_IS_NIL) {
-          config->action_type_ = ACTION_STRIP;
-          config->arg_count_ = 0;
+          config->action_type = ACTION_STRIP;
        } else {
          ERROR_GOTO1("ERROR: Multiple actions specified.\n", ErrParse);
        }
        ++i;
      } else if (!strcmp(argv[i], "-frame")) {
        CHECK_NUM_ARGS_AT_LEAST(3, ErrParse);
-        if (ACTION_IS_NIL || config->action_type_ == ACTION_SET) {
-          config->action_type_ = ACTION_SET;
+        if (ACTION_IS_NIL || config->action_type == ACTION_SET) {
+          config->action_type = ACTION_SET;
        } else {
          ERROR_GOTO1("ERROR: Multiple actions specified.\n", ErrParse);
        }
-        if (FEATURETYPE_IS_NIL || config->type_ == FEATURE_ANMF) {
-          config->type_ = FEATURE_ANMF;
+        if (FEATURETYPE_IS_NIL || config->type == FEATURE_ANMF) {
+          config->type = FEATURE_ANMF;
        } else {
          ERROR_GOTO1("ERROR: Multiple features specified.\n", ErrParse);
        }
-        arg->subtype_ = SUBTYPE_ANMF;
-        arg->filename_ = wargv[i + 1];
-        arg->params_ = argv[i + 2];
+        arg->subtype = SUBTYPE_ANMF;
+        arg->filename = wargv[i + 1];
+        arg->params = argv[i + 2];
        ++feature_arg_index;
        i += 3;
      } else if (!strcmp(argv[i], "-loop") || !strcmp(argv[i], "-bgcolor")) {
        CHECK_NUM_ARGS_AT_LEAST(2, ErrParse);
-        if (ACTION_IS_NIL || config->action_type_ == ACTION_SET) {
-          config->action_type_ = ACTION_SET;
+        if (ACTION_IS_NIL || config->action_type == ACTION_SET) {
+          config->action_type = ACTION_SET;
        } else {
          ERROR_GOTO1("ERROR: Multiple actions specified.\n", ErrParse);
        }
-        if (FEATURETYPE_IS_NIL || config->type_ == FEATURE_ANMF) {
-          config->type_ = FEATURE_ANMF;
+        if (FEATURETYPE_IS_NIL || config->type == FEATURE_ANMF) {
+          config->type = FEATURE_ANMF;
        } else {
          ERROR_GOTO1("ERROR: Multiple features specified.\n", ErrParse);
        }
-        arg->subtype_ =
+        arg->subtype =
            !strcmp(argv[i], "-loop") ? SUBTYPE_LOOP : SUBTYPE_BGCOLOR;
-        arg->params_ = argv[i + 1];
+        arg->params = argv[i + 1];
        ++feature_arg_index;
        i += 2;
      } else if (!strcmp(argv[i], "-o")) {
        CHECK_NUM_ARGS_AT_LEAST(2, ErrParse);
-        config->output_ = wargv[i + 1];
+        config->output = wargv[i + 1];
        i += 2;
      } else if (!strcmp(argv[i], "-info")) {
        CHECK_NUM_ARGS_EXACTLY(2, ErrParse);
-        if (config->action_type_ != NIL_ACTION) {
+        if (config->action_type != NIL_ACTION) {
          ERROR_GOTO1("ERROR: Multiple actions specified.\n", ErrParse);
        } else {
-          config->action_type_ = ACTION_INFO;
-          config->arg_count_ = 0;
-          config->input_ = wargv[i + 1];
+          config->action_type = ACTION_INFO;
+          config->arg_count = 0;
+          config->input = wargv[i + 1];
        }
        i += 2;
      } else if (!strcmp(argv[i], "-h") || !strcmp(argv[i], "-help")) {
        PrintHelp();
        DeleteConfig(config);
-        LOCAL_FREE((W_CHAR** const)unicode_argv);
+        LOCAL_FREE((W_CHAR**)unicode_argv);
        exit(0);
      } else if (!strcmp(argv[i], "-version")) {
        const int version = WebPGetMuxVersion();
-        printf("%d.%d.%d\n",
-               (version >> 16) & 0xff, (version >> 8) & 0xff, version & 0xff);
+        printf("%d.%d.%d\n", (version >> 16) & 0xff, (version >> 8) & 0xff,
+               version & 0xff);
        DeleteConfig(config);
-        LOCAL_FREE((W_CHAR** const)unicode_argv);
+        LOCAL_FREE((W_CHAR**)unicode_argv);
        exit(0);
      } else if (!strcmp(argv[i], "--")) {
        if (i < argc - 1) {
          ++i;
-          if (config->input_ == NULL) {
-            config->input_ = wargv[i];
+          if (config->input == NULL) {
+            config->input = wargv[i];
          } else {
            ERROR_GOTO2("ERROR at '%s': Multiple input files specified.\n",
                        argv[i], ErrParse);
@@ -758,50 +764,66 @@ static int ParseCommandLine(Config* config, const W_CHAR** const unicode_argv) {
        ERROR_GOTO2("ERROR: Unknown option: '%s'.\n", argv[i], ErrParse);
      }
    } else {  // One of the feature types or input.
+      // After consuming the arguments to -get/-set/-strip, treat any remaining
+      // arguments as input. This allows files that are named the same as the
+      // keywords used with these options.
+      int is_input = feature_arg_index == config->arg_count;
      if (ACTION_IS_NIL) {
        ERROR_GOTO1("ERROR: Action must be specified before other arguments.\n",
                    ErrParse);
      }
-      if (!strcmp(argv[i], "icc") || !strcmp(argv[i], "exif") ||
-          !strcmp(argv[i], "xmp")) {
-        if (FEATURETYPE_IS_NIL) {
-          config->type_ = (!strcmp(argv[i], "icc")) ? FEATURE_ICCP :
-              (!strcmp(argv[i], "exif")) ? FEATURE_EXIF : FEATURE_XMP;
-        } else {
-          ERROR_GOTO1("ERROR: Multiple features specified.\n", ErrParse);
-        }
-        if (config->action_type_ == ACTION_SET) {
+      if (!is_input) {
+        if (!strcmp(argv[i], "icc") || !strcmp(argv[i], "exif") ||
+            !strcmp(argv[i], "xmp")) {
+          if (FEATURETYPE_IS_NIL) {
+            config->type = (!strcmp(argv[i], "icc"))    ? FEATURE_ICCP
+                           : (!strcmp(argv[i], "exif")) ? FEATURE_EXIF
+                                                        : FEATURE_XMP;
+          } else {
+            ERROR_GOTO1("ERROR: Multiple features specified.\n", ErrParse);
+          }
+          if (config->action_type == ACTION_SET) {
+            CHECK_NUM_ARGS_AT_LEAST(2, ErrParse);
+            arg->filename = wargv[i + 1];
+            ++feature_arg_index;
+            i += 2;
+          } else {
+            // Note: 'arg->params' is not used in this case. 'arg_count' is
+            // used as a flag to indicate the -get/-strip feature has already
+            // been consumed, allowing input types to be named the same as the
+            // feature type.
+            config->arg_count = 0;
+            ++i;
+          }
+        } else if (!strcmp(argv[i], "frame") &&
+                   (config->action_type == ACTION_GET)) {
          CHECK_NUM_ARGS_AT_LEAST(2, ErrParse);
-          arg->filename_ = wargv[i + 1];
+          config->type = FEATURE_ANMF;
+          arg->params = argv[i + 1];
+          ++feature_arg_index;
+          i += 2;
+        } else if (!strcmp(argv[i], "loop") &&
+                   (config->action_type == ACTION_SET)) {
+          CHECK_NUM_ARGS_AT_LEAST(2, ErrParse);
+          config->type = FEATURE_LOOP;
+          arg->params = argv[i + 1];
+          ++feature_arg_index;
+          i += 2;
+        } else if (!strcmp(argv[i], "bgcolor") &&
+                   (config->action_type == ACTION_SET)) {
+          CHECK_NUM_ARGS_AT_LEAST(2, ErrParse);
+          config->type = FEATURE_BGCOLOR;
+          arg->params = argv[i + 1];
          ++feature_arg_index;
          i += 2;
        } else {
-          ++i;
+          is_input = 1;
        }
-      } else if (!strcmp(argv[i], "frame") &&
-                 (config->action_type_ == ACTION_GET)) {
-        CHECK_NUM_ARGS_AT_LEAST(2, ErrParse);
-        config->type_ = FEATURE_ANMF;
-        arg->params_ = argv[i + 1];
-        ++feature_arg_index;
-        i += 2;
-      } else if (!strcmp(argv[i], "loop") &&
-                 (config->action_type_ == ACTION_SET)) {
-        CHECK_NUM_ARGS_AT_LEAST(2, ErrParse);
-        config->type_ = FEATURE_LOOP;
-        arg->params_ = argv[i + 1];
-        ++feature_arg_index;
-        i += 2;
-      } else if (!strcmp(argv[i], "bgcolor") &&
-                 (config->action_type_ == ACTION_SET)) {
-        CHECK_NUM_ARGS_AT_LEAST(2, ErrParse);
-        config->type_ = FEATURE_BGCOLOR;
-        arg->params_ = argv[i + 1];
-        ++feature_arg_index;
-        i += 2;
-      } else {  // Assume input file.
-        if (config->input_ == NULL) {
-          config->input_ = wargv[i];
+      }
+
+      if (is_input) {
+        if (config->input == NULL) {
+          config->input = wargv[i];
        } else {
          ERROR_GOTO2("ERROR at '%s': Multiple input files specified.\n",
                      argv[i], ErrParse);
@@ -810,7 +832,7 @@ static int ParseCommandLine(Config* config, const W_CHAR** const unicode_argv) {
      }
    }
  }
- ErrParse:
+ErrParse:
  return ok;
 }

@@ -824,25 +846,25 @@ static int ValidateConfig(Config* const config) {
  }

  // Feature type.
-  if (FEATURETYPE_IS_NIL && config->action_type_ != ACTION_INFO) {
+  if (FEATURETYPE_IS_NIL && config->action_type != ACTION_INFO) {
    ERROR_GOTO1("ERROR: No feature specified.\n", ErrValidate2);
  }

  // Input file.
-  if (config->input_ == NULL) {
-    if (config->action_type_ != ACTION_SET) {
+  if (config->input == NULL) {
+    if (config->action_type != ACTION_SET) {
      ERROR_GOTO1("ERROR: No input file specified.\n", ErrValidate2);
-    } else if (config->type_ != FEATURE_ANMF) {
+    } else if (config->type != FEATURE_ANMF) {
      ERROR_GOTO1("ERROR: No input file specified.\n", ErrValidate2);
    }
  }

  // Output file.
-  if (config->output_ == NULL && config->action_type_ != ACTION_INFO) {
+  if (config->output == NULL && config->action_type != ACTION_INFO) {
    ERROR_GOTO1("ERROR: No output file specified.\n", ErrValidate2);
  }

- ErrValidate2:
+ErrValidate2:
  return ok;
 }

@@ -854,17 +876,17 @@ static int InitializeConfig(int argc, const char* argv[], Config* const config,

  memset(config, 0, sizeof(*config));

-  ok = ExUtilInitCommandLineArguments(argc, argv, &config->cmd_args_);
+  ok = ExUtilInitCommandLineArguments(argc, argv, &config->cmd_args);
  if (!ok) return 0;

  // Validate command-line arguments.
-  if (!ValidateCommandLine(&config->cmd_args_, &num_feature_args)) {
+  if (!ValidateCommandLine(&config->cmd_args, &num_feature_args)) {
    ERROR_GOTO1("Exiting due to command-line parsing error.\n", Err1);
  }

-  config->arg_count_ = num_feature_args;
-  config->args_ = (FeatureArg*)calloc(num_feature_args, sizeof(*config->args_));
-  if (config->args_ == NULL) {
+  config->arg_count = num_feature_args;
+  config->args = (FeatureArg*)calloc(num_feature_args, sizeof(*config->args));
+  if (config->args == NULL) {
    ERROR_GOTO1("ERROR: Memory allocation error.\n", Err1);
  }

@@ -873,7 +895,7 @@ static int InitializeConfig(int argc, const char* argv[], Config* const config,
    ERROR_GOTO1("Exiting due to command-line parsing error.\n", Err1);
  }

- Err1:
+Err1:
  return ok;
 }

@@ -896,7 +918,7 @@ static int GetFrame(const WebPMux* mux, const Config* config) {
  WebPMuxFrameInfo info;
  WebPDataInit(&info.bitstream);

-  num = ExUtilGetInt(config->args_[0].params_, 10, &parse_error);
+  num = ExUtilGetInt(config->args[0].params, 10, &parse_error);
  if (num < 0) {
    ERROR_GOTO1("ERROR: Frame/Fragment index must be non-negative.\n", ErrGet);
  }
@@ -905,8 +927,8 @@ static int GetFrame(const WebPMux* mux, const Config* config) {
  err = WebPMuxGetFrame(mux, num, &info);
  if (err == WEBP_MUX_OK && info.id != id) err = WEBP_MUX_NOT_FOUND;
  if (err != WEBP_MUX_OK) {
-    ERROR_GOTO3("ERROR (%s): Could not get frame %d.\n",
-                ErrorString(err), num, ErrGet);
+    ERROR_GOTO3("ERROR (%s): Could not get frame %d.\n", ErrorString(err), num,
+                ErrGet);
  }

  mux_single = WebPMuxNew();
@@ -921,9 +943,9 @@ static int GetFrame(const WebPMux* mux, const Config* config) {
                ErrorString(err), ErrGet);
  }

-  ok = WriteWebP(mux_single, config->output_);
+  ok = WriteWebP(mux_single, config->output);

- ErrGet:
+ErrGet:
  WebPDataClear(&info.bitstream);
  WebPMuxDelete(mux_single);
  return ok && !parse_error;
@@ -936,11 +958,11 @@ static int Process(const Config* config) {
  WebPMuxError err = WEBP_MUX_OK;
  int ok = 1;

-  switch (config->action_type_) {
+  switch (config->action_type) {
    case ACTION_GET: {
-      ok = CreateMux(config->input_, &mux);
+      ok = CreateMux(config->input, &mux);
      if (!ok) goto Err2;
-      switch (config->type_) {
+      switch (config->type) {
        case FEATURE_ANMF:
          ok = GetFrame(mux, config);
          break;
@@ -948,12 +970,12 @@ static int Process(const Config* config) {
        case FEATURE_ICCP:
        case FEATURE_EXIF:
        case FEATURE_XMP:
-          err = WebPMuxGetChunk(mux, kFourccList[config->type_], &chunk);
+          err = WebPMuxGetChunk(mux, kFourccList[config->type], &chunk);
          if (err != WEBP_MUX_OK) {
-            ERROR_GOTO3("ERROR (%s): Could not get the %s.\n",
-                        ErrorString(err), kDescriptions[config->type_], Err2);
+            ERROR_GOTO3("ERROR (%s): Could not get the %s.\n", ErrorString(err),
+                        kDescriptions[config->type], Err2);
          }
-          ok = WriteData(config->output_, &chunk);
+          ok = WriteData(config->output, &chunk);
          break;

        default:
@@ -963,20 +985,20 @@ static int Process(const Config* config) {
      break;
    }
    case ACTION_SET: {
-      switch (config->type_) {
+      switch (config->type) {
        case FEATURE_ANMF: {
          int i;
-          WebPMuxAnimParams params = { 0xFFFFFFFF, 0 };
+          WebPMuxAnimParams params = {0xFFFFFFFF, 0};
          mux = WebPMuxNew();
          if (mux == NULL) {
            ERROR_GOTO2("ERROR (%s): Could not allocate a mux object.\n",
                        ErrorString(WEBP_MUX_MEMORY_ERROR), Err2);
          }
-          for (i = 0; i < config->arg_count_; ++i) {
-            switch (config->args_[i].subtype_) {
+          for (i = 0; i < config->arg_count; ++i) {
+            switch (config->args[i].subtype) {
              case SUBTYPE_BGCOLOR: {
                uint32_t bgcolor;
-                ok = ParseBgcolorArgs(config->args_[i].params_, &bgcolor);
+                ok = ParseBgcolorArgs(config->args[i].params, &bgcolor);
                if (!ok) {
                  ERROR_GOTO1("ERROR: Could not parse the background color \n",
                              Err2);
@@ -987,13 +1009,15 @@ static int Process(const Config* config) {
              case SUBTYPE_LOOP: {
                int parse_error = 0;
                const int loop_count =
-                    ExUtilGetInt(config->args_[i].params_, 10, &parse_error);
+                    ExUtilGetInt(config->args[i].params, 10, &parse_error);
                if (loop_count < 0 || loop_count > 65535) {
                  // Note: This is only a 'necessary' condition for loop_count
                  // to be valid. The 'sufficient' conditioned in checked in
                  // WebPMuxSetAnimationParams() method called later.
-                  ERROR_GOTO1("ERROR: Loop count must be in the range 0 to "
-                              "65535.\n", Err2);
+                  ERROR_GOTO1(
+                      "ERROR: Loop count must be in the range 0 to "
+                      "65535.\n",
+                      Err2);
                }
                ok = !parse_error;
                if (!ok) goto Err2;
@@ -1003,10 +1027,10 @@ static int Process(const Config* config) {
              case SUBTYPE_ANMF: {
                WebPMuxFrameInfo frame;
                frame.id = WEBP_CHUNK_ANMF;
-                ok = ExUtilReadFileToWebPData(config->args_[i].filename_,
+                ok = ExUtilReadFileToWebPData(config->args[i].filename,
                                              &frame.bitstream);
                if (!ok) goto Err2;
-                ok = ParseFrameArgs(config->args_[i].params_, &frame);
+                ok = ParseFrameArgs(config->args[i].params, &frame);
                if (!ok) {
                  WebPDataClear(&frame.bitstream);
                  ERROR_GOTO1("ERROR: Could not parse frame properties.\n",
@@ -1015,8 +1039,10 @@ static int Process(const Config* config) {
                err = WebPMuxPushFrame(mux, &frame, 1);
                WebPDataClear(&frame.bitstream);
                if (err != WEBP_MUX_OK) {
-                  ERROR_GOTO3("ERROR (%s): Could not add a frame at index %d."
-                              "\n", ErrorString(err), i, Err2);
+                  ERROR_GOTO3(
+                      "ERROR (%s): Could not add a frame at index %d."
+                      "\n",
+                      ErrorString(err), i, Err2);
                }
                break;
              }
@@ -1037,28 +1063,28 @@ static int Process(const Config* config) {
        case FEATURE_ICCP:
        case FEATURE_EXIF:
        case FEATURE_XMP: {
-          ok = CreateMux(config->input_, &mux);
+          ok = CreateMux(config->input, &mux);
          if (!ok) goto Err2;
-          ok = ExUtilReadFileToWebPData(config->args_[0].filename_, &chunk);
+          ok = ExUtilReadFileToWebPData(config->args[0].filename, &chunk);
          if (!ok) goto Err2;
-          err = WebPMuxSetChunk(mux, kFourccList[config->type_], &chunk, 1);
+          err = WebPMuxSetChunk(mux, kFourccList[config->type], &chunk, 1);
          WebPDataClear(&chunk);
          if (err != WEBP_MUX_OK) {
-            ERROR_GOTO3("ERROR (%s): Could not set the %s.\n",
-                        ErrorString(err), kDescriptions[config->type_], Err2);
+            ERROR_GOTO3("ERROR (%s): Could not set the %s.\n", ErrorString(err),
+                        kDescriptions[config->type], Err2);
          }
          break;
        }
        case FEATURE_LOOP: {
-          WebPMuxAnimParams params = { 0xFFFFFFFF, 0 };
+          WebPMuxAnimParams params = {0xFFFFFFFF, 0};
          int parse_error = 0;
          const int loop_count =
-              ExUtilGetInt(config->args_[0].params_, 10, &parse_error);
+              ExUtilGetInt(config->args[0].params, 10, &parse_error);
          if (loop_count < 0 || loop_count > 65535 || parse_error) {
            ERROR_GOTO1("ERROR: Loop count must be in the range 0 to 65535.\n",
                        Err2);
          }
-          ok = CreateMux(config->input_, &mux);
+          ok = CreateMux(config->input, &mux);
          if (!ok) goto Err2;
          ok = (WebPMuxGetAnimationParams(mux, &params) == WEBP_MUX_OK);
          if (!ok) {
@@ -1075,14 +1101,13 @@ static int Process(const Config* config) {
          break;
        }
        case FEATURE_BGCOLOR: {
-          WebPMuxAnimParams params = { 0xFFFFFFFF, 0 };
+          WebPMuxAnimParams params = {0xFFFFFFFF, 0};
          uint32_t bgcolor;
-          ok = ParseBgcolorArgs(config->args_[0].params_, &bgcolor);
+          ok = ParseBgcolorArgs(config->args[0].params, &bgcolor);
          if (!ok) {
-            ERROR_GOTO1("ERROR: Could not parse the background color.\n",
-                        Err2);
+            ERROR_GOTO1("ERROR: Could not parse the background color.\n", Err2);
          }
-          ok = CreateMux(config->input_, &mux);
+          ok = CreateMux(config->input, &mux);
          if (!ok) goto Err2;
          ok = (WebPMuxGetAnimationParams(mux, &params) == WEBP_MUX_OK);
          if (!ok) {
@@ -1103,12 +1128,12 @@ static int Process(const Config* config) {
          break;
        }
      }
-      ok = WriteWebP(mux, config->output_);
+      ok = WriteWebP(mux, config->output);
      break;
    }
    case ACTION_DURATION: {
      int num_frames;
-      ok = CreateMux(config->input_, &mux);
+      ok = CreateMux(config->input, &mux);
      if (!ok) goto Err2;
      err = WebPMuxNumChunks(mux, WEBP_CHUNK_ANMF, &num_frames);
      ok = (err == WEBP_MUX_OK);
@@ -1116,9 +1141,10 @@ static int Process(const Config* config) {
        ERROR_GOTO1("ERROR: can not parse the number of frames.\n", Err2);
      }
      if (num_frames == 0) {
-        fprintf(stderr, "Doesn't look like the source is animated. "
-                        "Skipping duration setting.\n");
-        ok = WriteWebP(mux, config->output_);
+        fprintf(stderr,
+                "Doesn't look like the source is animated. "
+                "Skipping duration setting.\n");
+        ok = WriteWebP(mux, config->output);
        if (!ok) goto Err2;
      } else {
        int i;
@@ -1130,12 +1156,12 @@ static int Process(const Config* config) {
        for (i = 0; i < num_frames; ++i) durations[i] = -1;

        // Parse intervals to process.
-        for (i = 0; i < config->arg_count_; ++i) {
+        for (i = 0; i < config->arg_count; ++i) {
          int k;
          int args[3];
          int duration, start, end;
-          const int nb_args = ExUtilGetInts(config->args_[i].params_,
-                                            10, 3, args);
+          const int nb_args =
+              ExUtilGetInts(config->args[i].params, 10, 3, args);
          ok = (nb_args >= 1);
          if (!ok) goto Err3;
          duration = args[0];
@@ -1143,7 +1169,7 @@ static int Process(const Config* config) {
            ERROR_GOTO1("ERROR: duration must be strictly positive.\n", Err3);
          }

-          if (nb_args == 1) {   // only duration is present -> use full interval
+          if (nb_args == 1) {  // only duration is present -> use full interval
            start = 1;
            end = num_frames;
          } else {
@@ -1178,11 +1204,11 @@ static int Process(const Config* config) {
          WebPDataClear(&frame.bitstream);
        }
        WebPMuxDelete(mux);
-        ok = WriteWebP(new_mux, config->output_);
+        ok = WriteWebP(new_mux, config->output);
        mux = new_mux;  // transfer for the WebPMuxDelete() call
        new_mux = NULL;

- Err3:
+      Err3:
        WebPFree(durations);
        WebPMuxDelete(new_mux);
        if (!ok) goto Err2;
@@ -1190,24 +1216,24 @@ static int Process(const Config* config) {
      break;
    }
    case ACTION_STRIP: {
-      ok = CreateMux(config->input_, &mux);
+      ok = CreateMux(config->input, &mux);
      if (!ok) goto Err2;
-      if (config->type_ == FEATURE_ICCP || config->type_ == FEATURE_EXIF ||
-          config->type_ == FEATURE_XMP) {
-        err = WebPMuxDeleteChunk(mux, kFourccList[config->type_]);
+      if (config->type == FEATURE_ICCP || config->type == FEATURE_EXIF ||
+          config->type == FEATURE_XMP) {
+        err = WebPMuxDeleteChunk(mux, kFourccList[config->type]);
        if (err != WEBP_MUX_OK) {
-          ERROR_GOTO3("ERROR (%s): Could not strip the %s.\n",
-                      ErrorString(err), kDescriptions[config->type_], Err2);
+          ERROR_GOTO3("ERROR (%s): Could not strip the %s.\n", ErrorString(err),
+                      kDescriptions[config->type], Err2);
        }
      } else {
        ERROR_GOTO1("ERROR: Invalid feature for action 'strip'.\n", Err2);
        break;
      }
-      ok = WriteWebP(mux, config->output_);
+      ok = WriteWebP(mux, config->output);
      break;
    }
    case ACTION_INFO: {
-      ok = CreateMux(config->input_, &mux);
+      ok = CreateMux(config->input, &mux);
      if (!ok) goto Err2;
      ok = (DisplayInfo(mux) == WEBP_MUX_OK);
      break;
@@ -1218,7 +1244,7 @@ static int Process(const Config* config) {
    }
  }

- Err2:
+Err2:
  WebPMuxDelete(mux);
  return ok;
 }
--- a/extras/extras.c
+++ b/extras/extras.c
@@ -20,11 +20,12 @@
 #include "sharpyuv/sharpyuv.h"
 #include "src/dsp/dsp.h"
 #include "src/utils/utils.h"
+#include "src/webp/encode.h"
 #include "webp/format_constants.h"
 #include "webp/types.h"

 #define XTRA_MAJ_VERSION 1
-#define XTRA_MIN_VERSION 4
+#define XTRA_MIN_VERSION 6
 #define XTRA_REV_VERSION 0

 //------------------------------------------------------------------------------
@@ -44,7 +45,7 @@ int WebPImportGray(const uint8_t* gray_data, WebPPicture* pic) {
  uv_width = (width + 1) >> 1;
  for (y = 0; y < pic->height; ++y) {
    memcpy(pic->y + y * pic->y_stride, gray_data, width);
-    gray_data += width;    // <- we could use some 'data_stride' here if needed
+    gray_data += width;  // <- we could use some 'data_stride' here if needed
    if ((y & 1) == 0) {
      memset(pic->u + (y >> 1) * pic->uv_stride, 128, uv_width);
      memset(pic->v + (y >> 1) * pic->uv_stride, 128, uv_width);
--- a/extras/extras.h
+++ b/extras/extras.h
@@ -11,6 +11,8 @@
 #ifndef WEBP_EXTRAS_EXTRAS_H_
 #define WEBP_EXTRAS_EXTRAS_H_

+#include <stddef.h>
+
 #include "webp/types.h"

 #ifdef __cplusplus
@@ -20,7 +22,7 @@ extern "C" {
 #include "sharpyuv/sharpyuv.h"
 #include "webp/encode.h"

-#define WEBP_EXTRAS_ABI_VERSION 0x0003    // MAJOR(8b) + MINOR(8b)
+#define WEBP_EXTRAS_ABI_VERSION 0x0003  // MAJOR(8b) + MINOR(8b)

 //------------------------------------------------------------------------------

@@ -47,10 +49,10 @@ WEBP_EXTERN int WebPImportRGB4444(const uint8_t* rgb4444, WebPPicture* pic);
 // MAX_PALETTE_SIZE. 'pic' must have been initialized. Its content, if any,
 // will be discarded. Returns 'false' in case of error, or if indexed[] contains
 // invalid indices.
-WEBP_EXTERN int
-WebPImportColorMappedARGB(const uint8_t* indexed, int indexed_stride,
-                          const uint32_t palette[], int palette_size,
-                          WebPPicture* pic);
+WEBP_EXTERN int WebPImportColorMappedARGB(const uint8_t* indexed,
+                                          int indexed_stride,
+                                          const uint32_t palette[],
+                                          int palette_size, WebPPicture* pic);

 // Convert the ARGB content of 'pic' from associated to unassociated.
 // 'pic' can be for instance the result of calling of some WebPPictureImportXXX
@@ -96,15 +98,17 @@ WEBP_EXTERN int VP8EstimateQuality(const uint8_t* const data, size_t size);
 //     currently supported.
 // width, height: width and height of the image in pixels
 // Returns 0 on failure.
-WEBP_EXTERN int SharpYuvEstimate420Risk(
-    const void* r_ptr, const void* g_ptr, const void* b_ptr, int rgb_step,
-    int rgb_stride, int rgb_bit_depth, int width, int height,
-    const SharpYuvOptions* options, float* score);
+WEBP_EXTERN int SharpYuvEstimate420Risk(const void* r_ptr, const void* g_ptr,
+                                        const void* b_ptr, int rgb_step,
+                                        int rgb_stride, int rgb_bit_depth,
+                                        int width, int height,
+                                        const SharpYuvOptions* options,
+                                        float* score);

 //------------------------------------------------------------------------------

 #ifdef __cplusplus
-}    // extern "C"
+}  // extern "C"
 #endif

 #endif  // WEBP_EXTRAS_EXTRAS_H_
--- a/extras/get_disto.c
+++ b/extras/get_disto.c
@@ -23,10 +23,11 @@
 #include <stdlib.h>
 #include <string.h>

-#include "webp/encode.h"
+#include "../examples/unicode.h"
 #include "imageio/image_dec.h"
 #include "imageio/imageio_util.h"
-#include "../examples/unicode.h"
+#include "src/webp/types.h"
+#include "webp/encode.h"

 static size_t ReadPicture(const char* const filename, WebPPicture* const pic,
                          int keep_alpha) {
@@ -47,7 +48,7 @@ static size_t ReadPicture(const char* const filename, WebPPicture* const pic,
  reader = WebPGuessImageReader(data, data_size);
  ok = reader(data, data_size, pic, keep_alpha, NULL);

- End:
+End:
  if (!ok) {
    WFPRINTF(stderr, "Error! Could not process file %s\n",
             (const W_CHAR*)filename);
@@ -56,8 +57,8 @@ static size_t ReadPicture(const char* const filename, WebPPicture* const pic,
  return ok ? data_size : 0;
 }

-static void RescalePlane(uint8_t* plane, int width, int height,
-                         int x_stride, int y_stride, int max) {
+static void RescalePlane(uint8_t* plane, int width, int height, int x_stride,
+                         int y_stride, int max) {
  const uint32_t factor = (max > 0) ? (255u << 16) / max : 0;
  int x, y;
  for (y = 0; y < height; ++y) {
@@ -70,9 +71,9 @@ static void RescalePlane(uint8_t* plane, int width, int height,
 }

 // Return the max absolute difference.
-static int DiffScaleChannel(uint8_t* src1, int stride1,
-                            const uint8_t* src2, int stride2,
-                            int x_stride, int w, int h, int do_scaling) {
+static int DiffScaleChannel(uint8_t* src1, int stride1, const uint8_t* src2,
+                            int stride2, int x_stride, int w, int h,
+                            int do_scaling) {
  int x, y;
  int max = 0;
  for (y = 0; y < h; ++y) {
@@ -94,7 +95,7 @@ static int DiffScaleChannel(uint8_t* src1, int stride1,
 // breaking the library's hidden visibility. This code duplication avoids the
 // bigger annoyance of having to open up internal details of libdsp...

-#define SSIM_KERNEL 3   // total size of the kernel: 2 * SSIM_KERNEL + 1
+#define SSIM_KERNEL 3  // total size of the kernel: 2 * SSIM_KERNEL + 1

 // struct for accumulating statistical moments
 typedef struct {
@@ -104,19 +105,19 @@ typedef struct {
 } DistoStats;

 // hat-shaped filter. Sum of coefficients is equal to 16.
-static const uint32_t kWeight[2 * SSIM_KERNEL + 1] = { 1, 2, 3, 4, 3, 2, 1 };
+static const uint32_t kWeight[2 * SSIM_KERNEL + 1] = {1, 2, 3, 4, 3, 2, 1};

 static WEBP_INLINE double SSIMCalculation(const DistoStats* const stats) {
  const uint32_t N = stats->w;
-  const uint32_t w2 =  N * N;
+  const uint32_t w2 = N * N;
  const uint32_t C1 = 20 * w2;
  const uint32_t C2 = 60 * w2;
-  const uint32_t C3 = 8 * 8 * w2;   // 'dark' limit ~= 6
+  const uint32_t C3 = 8 * 8 * w2;  // 'dark' limit ~= 6
  const uint64_t xmxm = (uint64_t)stats->xm * stats->xm;
  const uint64_t ymym = (uint64_t)stats->ym * stats->ym;
  if (xmxm + ymym >= C3) {
    const int64_t xmym = (int64_t)stats->xm * stats->ym;
-    const int64_t sxy = (int64_t)stats->xym * N - xmym;    // can be negative
+    const int64_t sxy = (int64_t)stats->xym * N - xmym;  // can be negative
    const uint64_t sxx = (uint64_t)stats->xxm * N - xmxm;
    const uint64_t syy = (uint64_t)stats->yym * N - ymym;
    // we descale by 8 to prevent overflow during the fnum/fden multiply.
@@ -128,13 +129,13 @@ static WEBP_INLINE double SSIMCalculation(const DistoStats* const stats) {
    assert(r >= 0. && r <= 1.0);
    return r;
  }
-  return 1.;   // area is too dark to contribute meaningfully
+  return 1.;  // area is too dark to contribute meaningfully
 }

 static double SSIMGetClipped(const uint8_t* src1, int stride1,
-                             const uint8_t* src2, int stride2,
-                             int xo, int yo, int W, int H) {
-  DistoStats stats = { 0, 0, 0, 0, 0, 0 };
+                             const uint8_t* src2, int stride2, int xo, int yo,
+                             int W, int H) {
+  DistoStats stats = {0, 0, 0, 0, 0, 0};
  const int ymin = (yo - SSIM_KERNEL < 0) ? 0 : yo - SSIM_KERNEL;
  const int ymax = (yo + SSIM_KERNEL > H - 1) ? H - 1 : yo + SSIM_KERNEL;
  const int xmin = (xo - SSIM_KERNEL < 0) ? 0 : xo - SSIM_KERNEL;
@@ -144,13 +145,13 @@ static double SSIMGetClipped(const uint8_t* src1, int stride1,
  src2 += ymin * stride2;
  for (y = ymin; y <= ymax; ++y, src1 += stride1, src2 += stride2) {
    for (x = xmin; x <= xmax; ++x) {
-      const uint32_t w = kWeight[SSIM_KERNEL + x - xo]
-                       * kWeight[SSIM_KERNEL + y - yo];
+      const uint32_t w =
+          kWeight[SSIM_KERNEL + x - xo] * kWeight[SSIM_KERNEL + y - yo];
      const uint32_t s1 = src1[x];
      const uint32_t s2 = src2[x];
-      stats.w   += w;
-      stats.xm  += w * s1;
-      stats.ym  += w * s2;
+      stats.w += w;
+      stats.xm += w * s1;
+      stats.ym += w * s2;
      stats.xxm += w * s1 * s1;
      stats.xym += w * s1 * s2;
      stats.yym += w * s2 * s2;
@@ -160,9 +161,9 @@ static double SSIMGetClipped(const uint8_t* src1, int stride1,
 }

 // Compute SSIM-score map. Return -1 in case of error, max diff otherwise.
-static int SSIMScaleChannel(uint8_t* src1, int stride1,
-                            const uint8_t* src2, int stride2,
-                            int x_stride, int w, int h, int do_scaling) {
+static int SSIMScaleChannel(uint8_t* src1, int stride1, const uint8_t* src2,
+                            int stride2, int x_stride, int w, int h,
+                            int do_scaling) {
  int x, y;
  int max = 0;
  uint8_t* const plane1 = (uint8_t*)malloc(2 * w * h * sizeof(*plane1));
@@ -204,8 +205,8 @@ static void ConvertToGray(WebPPicture* const pic) {
    for (x = 0; x < pic->width; ++x) {
      const uint32_t argb = row[x];
      const uint32_t r = (argb >> 16) & 0xff;
-      const uint32_t g = (argb >>  8) & 0xff;
-      const uint32_t b = (argb >>  0) & 0xff;
+      const uint32_t g = (argb >> 8) & 0xff;
+      const uint32_t b = (argb >> 0) & 0xff;
      // We use BT.709 for converting to luminance.
      const uint32_t Y = (uint32_t)(0.2126 * r + 0.7152 * g + 0.0722 * b + .5);
      row[x] = (argb & 0xff000000u) | (Y * 0x010101u);
@@ -296,8 +297,7 @@ int main(int argc, const char* argv[]) {
    fprintf(stderr, "Error while computing the distortion.\n");
    goto End;
  }
-  printf("%u %.2f    %.2f %.2f %.2f %.2f [ %.2f bpp ]\n",
-         (unsigned int)size1,
+  printf("%u %.2f    %.2f %.2f %.2f %.2f [ %.2f bpp ]\n", (unsigned int)size1,
         disto[4], disto[0], disto[1], disto[2], disto[3],
         8.f * size1 / pic1.width / pic1.height);

@@ -305,21 +305,25 @@ int main(int argc, const char* argv[]) {
    uint8_t* data = NULL;
    size_t data_size = 0;
    if (pic1.use_argb != pic2.use_argb) {
-      fprintf(stderr, "Pictures are not in the same argb format. "
-                      "Can't save the difference map.\n");
+      fprintf(stderr,
+              "Pictures are not in the same argb format. "
+              "Can't save the difference map.\n");
      goto End;
    }
    if (pic1.use_argb) {
      int n;
      fprintf(stderr, "max differences per channel: ");
-      for (n = 0; n < 3; ++n) {    // skip the alpha channel
-        const int range = (type == 1) ?
-          SSIMScaleChannel((uint8_t*)pic1.argb + n, pic1.argb_stride * 4,
-                           (const uint8_t*)pic2.argb + n, pic2.argb_stride * 4,
-                           4, pic1.width, pic1.height, scale) :
-          DiffScaleChannel((uint8_t*)pic1.argb + n, pic1.argb_stride * 4,
-                           (const uint8_t*)pic2.argb + n, pic2.argb_stride * 4,
-                           4, pic1.width, pic1.height, scale);
+      for (n = 0; n < 3; ++n) {  // skip the alpha channel
+        const int range =
+            (type == 1)
+                ? SSIMScaleChannel(
+                      (uint8_t*)pic1.argb + n, pic1.argb_stride * 4,
+                      (const uint8_t*)pic2.argb + n, pic2.argb_stride * 4, 4,
+                      pic1.width, pic1.height, scale)
+                : DiffScaleChannel(
+                      (uint8_t*)pic1.argb + n, pic1.argb_stride * 4,
+                      (const uint8_t*)pic2.argb + n, pic2.argb_stride * 4, 4,
+                      pic1.width, pic1.height, scale);
        if (range < 0) fprintf(stderr, "\nError computing diff map\n");
        fprintf(stderr, "[%d]", range);
      }
@@ -330,10 +334,9 @@ int main(int argc, const char* argv[]) {
      goto End;
    }
 #if !defined(WEBP_REDUCE_CSP)
-    data_size = WebPEncodeLosslessBGRA((const uint8_t*)pic1.argb,
-                                       pic1.width, pic1.height,
-                                       pic1.argb_stride * 4,
-                                       &data);
+    data_size =
+        WebPEncodeLosslessBGRA((const uint8_t*)pic1.argb, pic1.width,
+                               pic1.height, pic1.argb_stride * 4, &data);
    if (data_size == 0) {
      fprintf(stderr, "Error during lossless encoding.\n");
      goto End;
@@ -345,14 +348,15 @@ int main(int argc, const char* argv[]) {
 #else
    (void)data;
    (void)data_size;
-    fprintf(stderr, "Cannot save the difference map. Please recompile "
-                    "without the WEBP_REDUCE_CSP flag.\n");
+    fprintf(stderr,
+            "Cannot save the difference map. Please recompile "
+            "without the WEBP_REDUCE_CSP flag.\n");
    goto End;
 #endif  // WEBP_REDUCE_CSP
  }
  ret = EXIT_SUCCESS;

- End:
+End:
  WebPPictureFree(&pic1);
  WebPPictureFree(&pic2);
  FREE_WARGV_AND_RETURN(ret);
--- a/extras/quality_estimate.c
+++ b/extras/quality_estimate.c
@@ -11,10 +11,12 @@
 //
 // Author: Skal (pascal.massimino@gmail.com)

-#include "extras/extras.h"
-#include "webp/decode.h"
-
 #include <math.h>
+#include <stddef.h>
+
+#include "extras/extras.h"
+#include "src/webp/types.h"
+#include "webp/decode.h"

 //------------------------------------------------------------------------------

@@ -52,10 +54,10 @@ int VP8EstimateQuality(const uint8_t* const data, size_t size) {
  if (data == NULL) return -1;

  if (WebPGetFeatures(data, size, &features) != VP8_STATUS_OK) {
-    return -1;   // invalid file
+    return -1;  // invalid file
  }
-  if (features.format == 2) return 101;  // lossless
-  if (features.format == 0 || features.has_animation) return -1;   // mixed
+  if (features.format == 2) return 101;                           // lossless
+  if (features.format == 0 || features.has_animation) return -1;  // mixed

  while (pos < size) {
    sig = (sig >> 8) | ((uint64_t)data[pos++] << 40);
@@ -76,29 +78,29 @@ int VP8EstimateQuality(const uint8_t* const data, size_t size) {
  GET_BIT(2);  // colorspace + clamp type

  // Segment header
-  if (GET_BIT(1)) {       // use_segment_
+  if (GET_BIT(1)) {  // use_segment
    int s;
    const int update_map = GET_BIT(1);
-    if (GET_BIT(1)) {     // update data
+    if (GET_BIT(1)) {  // update data
      const int absolute_delta = GET_BIT(1);
-      int q[4]  = { 0, 0, 0, 0 };
+      int q[4] = {0, 0, 0, 0};
      for (s = 0; s < 4; ++s) {
        if (GET_BIT(1)) {
          q[s] = GET_BIT(7);
-          if (GET_BIT(1)) q[s] = -q[s];   // sign
+          if (GET_BIT(1)) q[s] = -q[s];  // sign
        }
      }
      if (absolute_delta) Q = q[0];  // just use the first segment's quantizer
-      for (s = 0; s < 4; ++s) CONDITIONAL_SKIP(7);   //  filter strength
+      for (s = 0; s < 4; ++s) CONDITIONAL_SKIP(7);  //  filter strength
    }
    if (update_map) {
      for (s = 0; s < 3; ++s) CONDITIONAL_SKIP(8);
    }
  }
  // Filter header
-  GET_BIT(1 + 6 + 3);     // simple + level + sharpness
-  if (GET_BIT(1)) {       // use_lf_delta
-    if (GET_BIT(1)) {     // update lf_delta?
+  GET_BIT(1 + 6 + 3);  // simple + level + sharpness
+  if (GET_BIT(1)) {    // use_lf_delta
+    if (GET_BIT(1)) {  // update lf_delta?
      int n;
      for (n = 0; n < 4 + 4; ++n) CONDITIONAL_SKIP(6);
    }
--- a/extras/vwebp_sdl.c
+++ b/extras/vwebp_sdl.c
@@ -23,10 +23,10 @@

 #if defined(WEBP_HAVE_SDL)

-#include "webp_to_sdl.h"
-#include "webp/decode.h"
-#include "imageio/imageio_util.h"
 #include "../examples/unicode.h"
+#include "imageio/imageio_util.h"
+#include "webp/decode.h"
+#include "webp_to_sdl.h"

 #if defined(WEBP_HAVE_JUST_SDL_H)
 #include <SDL.h>
@@ -41,11 +41,15 @@ static void ProcessEvents(void) {
    switch (event.type) {
      case SDL_KEYUP:
        switch (event.key.keysym.sym) {
-          case SDLK_q: done = 1; break;
-          default: break;
+          case SDLK_q:
+            done = 1;
+            break;
+          default:
+            break;
        }
        break;
-      default: break;
+      default:
+        break;
    }
  }
 }
@@ -57,6 +61,12 @@ int main(int argc, char* argv[]) {

  INIT_WARGV(argc, argv);

+  if (argc == 1) {
+    fprintf(stderr, "Usage: %s [-h] image.webp [more_files.webp...]\n",
+            argv[0]);
+    goto Error;
+  }
+
  for (c = 1; c < argc; ++c) {
    const char* file = NULL;
    const uint8_t* webp = NULL;
@@ -87,7 +97,7 @@ int main(int argc, char* argv[]) {
  }
  ok = 1;

- Error:
+Error:
  SDL_Quit();
  FREE_WARGV_AND_RETURN(ok ? EXIT_SUCCESS : EXIT_FAILURE);
 }
--- a/extras/webp_quality.c
+++ b/extras/webp_quality.c
@@ -11,9 +11,10 @@
 #include <stdlib.h>
 #include <string.h>

+#include "../examples/unicode.h"
 #include "extras/extras.h"
 #include "imageio/imageio_util.h"
-#include "../examples/unicode.h"
+#include "src/webp/types.h"

 // Returns EXIT_SUCCESS on success, EXIT_FAILURE on failure.
 int main(int argc, const char* argv[]) {
@@ -45,7 +46,7 @@ int main(int argc, const char* argv[]) {
        if (!quiet) {
          printf("Estimated quality factor: %d\n", q);
        } else {
-          printf("%d\n", q);   // just print the number
+          printf("%d\n", q);  // just print the number
        }
      }
      free((void*)data);
--- a/extras/webp_to_sdl.c
+++ b/extras/webp_to_sdl.c
@@ -17,11 +17,10 @@

 #if defined(WEBP_HAVE_SDL)

-#include "webp_to_sdl.h"
-
 #include <stdio.h>

 #include "src/webp/decode.h"
+#include "webp_to_sdl.h"

 #if defined(WEBP_HAVE_JUST_SDL_H)
 #include <SDL.h>
@@ -67,11 +66,11 @@ int WebPToSDL(const char* data, unsigned int data_size) {
  }

 #if SDL_BYTEORDER == SDL_BIG_ENDIAN
-  output = WebPDecodeBGRA((const uint8_t*)data, (size_t)data_size, &width,
-                          &height);
+  output =
+      WebPDecodeBGRA((const uint8_t*)data, (size_t)data_size, &width, &height);
 #else
-  output = WebPDecodeRGBA((const uint8_t*)data, (size_t)data_size, &width,
-                          &height);
+  output =
+      WebPDecodeRGBA((const uint8_t*)data, (size_t)data_size, &width, &height);
 #endif
  if (output == NULL) {
    fprintf(stderr, "Error decoding image (%d)\n", status);
@@ -84,7 +83,7 @@ int WebPToSDL(const char* data, unsigned int data_size) {
  SDL_RenderPresent(renderer);
  ok = 1;

- Error:
+Error:
  // We should call SDL_DestroyWindow(window) but that makes .js fail.
  SDL_DestroyRenderer(renderer);
  SDL_DestroyTexture(texture);
--- a/imageio/image_dec.c
+++ b/imageio/image_dec.c
@@ -11,6 +11,12 @@

 #include "./image_dec.h"

+#include <stddef.h>
+
+#include "./metadata.h"
+#include "webp/encode.h"
+#include "webp/types.h"
+
 const char* WebPGetEnabledInputFileFormats(void) {
  return "WebP"
 #ifdef WEBP_HAVE_JPEG
@@ -57,8 +63,8 @@ WebPInputFileFormat WebPGuessImageType(const uint8_t* const data,
 }

 static int FailReader(const uint8_t* const data, size_t data_size,
-                      struct WebPPicture* const pic,
-                      int keep_alpha, struct Metadata* const metadata) {
+                      struct WebPPicture* const pic, int keep_alpha,
+                      struct Metadata* const metadata) {
  (void)data;
  (void)data_size;
  (void)pic;
@@ -69,12 +75,18 @@ static int FailReader(const uint8_t* const data, size_t data_size,

 WebPImageReader WebPGetImageReader(WebPInputFileFormat format) {
  switch (format) {
-    case WEBP_PNG_FORMAT: return ReadPNG;
-    case WEBP_JPEG_FORMAT: return ReadJPEG;
-    case WEBP_TIFF_FORMAT: return ReadTIFF;
-    case WEBP_WEBP_FORMAT: return ReadWebP;
-    case WEBP_PNM_FORMAT: return ReadPNM;
-    default: return FailReader;
+    case WEBP_PNG_FORMAT:
+      return ReadPNG;
+    case WEBP_JPEG_FORMAT:
+      return ReadJPEG;
+    case WEBP_TIFF_FORMAT:
+      return ReadTIFF;
+    case WEBP_WEBP_FORMAT:
+      return ReadWebP;
+    case WEBP_PNM_FORMAT:
+      return ReadPNM;
+    default:
+      return FailReader;
  }
 }

--- a/imageio/image_dec.h
+++ b/imageio/image_dec.h
@@ -14,14 +14,16 @@
 #ifndef WEBP_IMAGEIO_IMAGE_DEC_H_
 #define WEBP_IMAGEIO_IMAGE_DEC_H_

+#include <stddef.h>
+
 #include "webp/types.h"

 #ifdef HAVE_CONFIG_H
 #include "webp/config.h"
 #endif

-#include "./metadata.h"
 #include "./jpegdec.h"
+#include "./metadata.h"
 #include "./pngdec.h"
 #include "./pnmdec.h"
 #include "./tiffdec.h"
@@ -51,8 +53,8 @@ WebPInputFileFormat WebPGuessImageType(const uint8_t* const data,

 // Signature for common image-reading functions (ReadPNG, ReadJPEG, ...)
 typedef int (*WebPImageReader)(const uint8_t* const data, size_t data_size,
-                               struct WebPPicture* const pic,
-                               int keep_alpha, struct Metadata* const metadata);
+                               struct WebPPicture* const pic, int keep_alpha,
+                               struct Metadata* const metadata);

 // Return the reader associated to a given file format.
 WebPImageReader WebPGetImageReader(WebPInputFileFormat format);
@@ -64,7 +66,7 @@ WebPImageReader WebPGuessImageReader(const uint8_t* const data,
                                     size_t data_size);

 #ifdef __cplusplus
-}    // extern "C"
+}  // extern "C"
 #endif

 #endif  // WEBP_IMAGEIO_IMAGE_DEC_H_
--- a/imageio/image_enc.c
+++ b/imageio/image_enc.c
@@ -12,11 +12,12 @@
 #include "./image_enc.h"

 #include <assert.h>
+#include <stdio.h>
 #include <string.h>

 #ifdef WEBP_HAVE_PNG
 #include <png.h>
-#include <setjmp.h>   // note: this must be included *after* png.h
+#include <setjmp.h>  // note: this must be included *after* png.h
 #endif

 #ifdef HAVE_WINCODEC_H
@@ -25,29 +26,32 @@
 #endif
 #define CINTERFACE
 #define COBJMACROS
-#define _WIN32_IE 0x500  // Workaround bug in shlwapi.h when compiling C++
-                         // code with COBJMACROS.
+#define _WIN32_IE \
+  0x500            // Workaround bug in shlwapi.h when compiling C++
+                   // code with COBJMACROS.
 #include <ole2.h>  // CreateStreamOnHGlobal()
 #include <shlwapi.h>
 #include <tchar.h>
-#include <windows.h>
 #include <wincodec.h>
+#include <windows.h>
 #endif

-#include "./imageio_util.h"
 #include "../examples/unicode.h"
+#include "./imageio_util.h"
+#include "webp/decode.h"
+#include "webp/types.h"

 //------------------------------------------------------------------------------
 // PNG

 #ifdef HAVE_WINCODEC_H

-#define IFS(fn)                                                     \
-  do {                                                              \
-    if (SUCCEEDED(hr)) {                                            \
-      hr = (fn);                                                    \
-      if (FAILED(hr)) fprintf(stderr, #fn " failed %08lx\n", hr);   \
-    }                                                               \
+#define IFS(fn)                                                   \
+  do {                                                            \
+    if (SUCCEEDED(hr)) {                                          \
+      hr = (fn);                                                  \
+      if (FAILED(hr)) fprintf(stderr, #fn " failed %08lx\n", hr); \
+    }                                                             \
  } while (0)

 #ifdef __cplusplus
@@ -56,8 +60,8 @@
 #define MAKE_REFGUID(x) &(x)
 #endif

-static HRESULT CreateOutputStream(const char* out_file_name,
-                                  int write_to_mem, IStream** stream) {
+static HRESULT CreateOutputStream(const char* out_file_name, int write_to_mem,
+                                  IStream** stream) {
  HRESULT hr = S_OK;
  if (write_to_mem) {
    // Output to a memory buffer. This is freed when 'stream' is released.
@@ -74,24 +78,22 @@ static HRESULT CreateOutputStream(const char* out_file_name,
 }

 static HRESULT WriteUsingWIC(const char* out_file_name, int use_stdout,
-                             REFGUID container_guid,
-                             uint8_t* rgb, int stride,
+                             REFGUID container_guid, uint8_t* rgb, int stride,
                             uint32_t width, uint32_t height, int has_alpha) {
  HRESULT hr = S_OK;
  IWICImagingFactory* factory = NULL;
  IWICBitmapFrameEncode* frame = NULL;
  IWICBitmapEncoder* encoder = NULL;
  IStream* stream = NULL;
-  WICPixelFormatGUID pixel_format = has_alpha ? GUID_WICPixelFormat32bppBGRA
-                                              : GUID_WICPixelFormat24bppBGR;
+  WICPixelFormatGUID pixel_format =
+      has_alpha ? GUID_WICPixelFormat32bppBGRA : GUID_WICPixelFormat24bppBGR;

  if (out_file_name == NULL || rgb == NULL) return E_INVALIDARG;

  IFS(CoInitialize(NULL));
-  IFS(CoCreateInstance(MAKE_REFGUID(CLSID_WICImagingFactory), NULL,
-                       CLSCTX_INPROC_SERVER,
-                       MAKE_REFGUID(IID_IWICImagingFactory),
-                       (LPVOID*)&factory));
+  IFS(CoCreateInstance(
+      MAKE_REFGUID(CLSID_WICImagingFactory), NULL, CLSCTX_INPROC_SERVER,
+      MAKE_REFGUID(IID_IWICImagingFactory), (LPVOID*)&factory));
  if (hr == REGDB_E_CLASSNOTREG) {
    fprintf(stderr,
            "Couldn't access Windows Imaging Component (are you running "
@@ -101,14 +103,13 @@ static HRESULT WriteUsingWIC(const char* out_file_name, int use_stdout,
  IFS(CreateOutputStream(out_file_name, use_stdout, &stream));
  IFS(IWICImagingFactory_CreateEncoder(factory, container_guid, NULL,
                                       &encoder));
-  IFS(IWICBitmapEncoder_Initialize(encoder, stream,
-                                   WICBitmapEncoderNoCache));
+  IFS(IWICBitmapEncoder_Initialize(encoder, stream, WICBitmapEncoderNoCache));
  IFS(IWICBitmapEncoder_CreateNewFrame(encoder, &frame, NULL));
  IFS(IWICBitmapFrameEncode_Initialize(frame, NULL));
  IFS(IWICBitmapFrameEncode_SetSize(frame, width, height));
  IFS(IWICBitmapFrameEncode_SetPixelFormat(frame, &pixel_format));
-  IFS(IWICBitmapFrameEncode_WritePixels(frame, height, stride,
-                                        height * stride, rgb));
+  IFS(IWICBitmapFrameEncode_WritePixels(frame, height, stride, height * stride,
+                                        rgb));
  IFS(IWICBitmapFrameEncode_Commit(frame));
  IFS(IWICBitmapEncoder_Commit(encoder));

@@ -150,11 +151,11 @@ int WebPWritePNG(const char* out_file_name, int use_stdout,
  const int has_alpha = WebPIsAlphaMode(buffer->colorspace);

  return SUCCEEDED(WriteUsingWIC(out_file_name, use_stdout,
-                                 MAKE_REFGUID(GUID_ContainerFormatPng),
-                                 rgb, stride, width, height, has_alpha));
+                                 MAKE_REFGUID(GUID_ContainerFormatPng), rgb,
+                                 stride, width, height, has_alpha));
 }

-#elif defined(WEBP_HAVE_PNG)    // !HAVE_WINCODEC_H
+#elif defined(WEBP_HAVE_PNG)  // !HAVE_WINCODEC_H
 static void PNGAPI PNGErrorFunction(png_structp png, png_const_charp unused) {
  (void)unused;  // remove variable-unused warning
  longjmp(png_jmpbuf(png), 1);
@@ -166,8 +167,8 @@ int WebPWritePNG(FILE* out_file, const WebPDecBuffer* const buffer) {

  if (out_file == NULL || buffer == NULL) return 0;

-  png = png_create_write_struct(PNG_LIBPNG_VER_STRING,
-                                NULL, PNGErrorFunction, NULL);
+  png = png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, PNGErrorFunction,
+                                NULL);
  if (png == NULL) {
    return 0;
  }
@@ -203,11 +204,12 @@ int WebPWritePNG(FILE* out_file, const WebPDecBuffer* const buffer) {
  png_destroy_write_struct((png_structpp)&png, (png_infopp)&info);
  return 1;
 }
-#else    // !HAVE_WINCODEC_H && !WEBP_HAVE_PNG
+#else                         // !HAVE_WINCODEC_H && !WEBP_HAVE_PNG
 int WebPWritePNG(FILE* fout, const WebPDecBuffer* const buffer) {
  if (fout == NULL || buffer == NULL) return 0;

-  fprintf(stderr, "PNG support not compiled. Please install the libpng "
+  fprintf(stderr,
+          "PNG support not compiled. Please install the libpng "
          "development package before building.\n");
  fprintf(stderr, "You can run with -ppm flag to decode in PPM format.\n");
  return 0;
@@ -232,8 +234,10 @@ static int WritePPMPAM(FILE* fout, const WebPDecBuffer* const buffer,
    if (row == NULL) return 0;

    if (alpha) {
-      fprintf(fout, "P7\nWIDTH %u\nHEIGHT %u\nDEPTH 4\nMAXVAL 255\n"
-                    "TUPLTYPE RGB_ALPHA\nENDHDR\n", width, height);
+      fprintf(fout,
+              "P7\nWIDTH %u\nHEIGHT %u\nDEPTH 4\nMAXVAL 255\n"
+              "TUPLTYPE RGB_ALPHA\nENDHDR\n",
+              width, height);
    } else {
      fprintf(fout, "P6\n%u %u\n255\n", width, height);
    }
@@ -294,7 +298,7 @@ static void PutLE16(uint8_t* const dst, uint32_t value) {
 }

 static void PutLE32(uint8_t* const dst, uint32_t value) {
-  PutLE16(dst + 0, (value >>  0) & 0xffff);
+  PutLE16(dst + 0, (value >> 0) & 0xffff);
  PutLE16(dst + 2, (value >> 16) & 0xffff);
 }

@@ -307,7 +311,7 @@ int WebPWriteBMP(FILE* fout, const WebPDecBuffer* const buffer) {
  int stride;
  uint32_t y;
  uint32_t bytes_per_px, line_size, image_size, bmp_stride, total_size;
-  uint8_t bmp_header[BMP_HEADER_SIZE + BMP_HEADER_ALPHA_EXTRA_SIZE] = { 0 };
+  uint8_t bmp_header[BMP_HEADER_SIZE + BMP_HEADER_ALPHA_EXTRA_SIZE] = {0};

  if (fout == NULL || buffer == NULL) return 0;

@@ -326,27 +330,27 @@ int WebPWriteBMP(FILE* fout, const WebPDecBuffer* const buffer) {
  if (rgba == NULL) return 0;

  // bitmap file header
-  PutLE16(bmp_header + 0, 0x4d42);                // signature 'BM'
-  PutLE32(bmp_header + 2, total_size);            // size including header
-  PutLE32(bmp_header + 6, 0);                     // reserved
-  PutLE32(bmp_header + 10, header_size);          // offset to pixel array
+  PutLE16(bmp_header + 0, 0x4d42);        // signature 'BM'
+  PutLE32(bmp_header + 2, total_size);    // size including header
+  PutLE32(bmp_header + 6, 0);             // reserved
+  PutLE32(bmp_header + 10, header_size);  // offset to pixel array
  // bitmap info header
-  PutLE32(bmp_header + 14, header_size - 14);     // DIB header size
-  PutLE32(bmp_header + 18, width);                // dimensions
-  PutLE32(bmp_header + 22, height);               // no vertical flip
-  PutLE16(bmp_header + 26, 1);                    // number of planes
-  PutLE16(bmp_header + 28, bytes_per_px * 8);     // bits per pixel
-  PutLE32(bmp_header + 30, has_alpha ? 3 : 0);    // BI_BITFIELDS or BI_RGB
+  PutLE32(bmp_header + 14, header_size - 14);   // DIB header size
+  PutLE32(bmp_header + 18, width);              // dimensions
+  PutLE32(bmp_header + 22, height);             // no vertical flip
+  PutLE16(bmp_header + 26, 1);                  // number of planes
+  PutLE16(bmp_header + 28, bytes_per_px * 8);   // bits per pixel
+  PutLE32(bmp_header + 30, has_alpha ? 3 : 0);  // BI_BITFIELDS or BI_RGB
  PutLE32(bmp_header + 34, image_size);
-  PutLE32(bmp_header + 38, 2400);                 // x pixels/meter
-  PutLE32(bmp_header + 42, 2400);                 // y pixels/meter
-  PutLE32(bmp_header + 46, 0);                    // number of palette colors
-  PutLE32(bmp_header + 50, 0);                    // important color count
-  if (has_alpha) {  // BITMAPV3INFOHEADER complement
-    PutLE32(bmp_header + 54, 0x00ff0000);         // red mask
-    PutLE32(bmp_header + 58, 0x0000ff00);         // green mask
-    PutLE32(bmp_header + 62, 0x000000ff);         // blue mask
-    PutLE32(bmp_header + 66, 0xff000000);         // alpha mask
+  PutLE32(bmp_header + 38, 2400);          // x pixels/meter
+  PutLE32(bmp_header + 42, 2400);          // y pixels/meter
+  PutLE32(bmp_header + 46, 0);             // number of palette colors
+  PutLE32(bmp_header + 50, 0);             // important color count
+  if (has_alpha) {                         // BITMAPV3INFOHEADER complement
+    PutLE32(bmp_header + 54, 0x00ff0000);  // red mask
+    PutLE32(bmp_header + 58, 0x0000ff00);  // green mask
+    PutLE32(bmp_header + 62, 0x000000ff);  // blue mask
+    PutLE32(bmp_header + 66, 0xff000000);  // alpha mask
  }

  // TODO(skal): color profile
@@ -364,7 +368,7 @@ int WebPWriteBMP(FILE* fout, const WebPDecBuffer* const buffer) {
    }
    // write padding zeroes
    if (bmp_stride != line_size) {
-      const uint8_t zeroes[3] = { 0 };
+      const uint8_t zeroes[3] = {0};
      if (fwrite(zeroes, bmp_stride - line_size, 1, fout) != 1) {
        return 0;
      }
@@ -394,35 +398,35 @@ int WebPWriteTIFF(FILE* fout, const WebPDecBuffer* const buffer) {
  // For non-alpha case, we omit tag 0x152 (ExtraSamples).
  const uint8_t num_ifd_entries = 0;
  uint8_t tiff_header[TIFF_HEADER_SIZE] = {
-    0x49, 0x49, 0x2a, 0x00,   // little endian signature
-    8, 0, 0, 0,               // offset to the unique IFD that follows
-    // IFD (offset = 8). Entries must be written in increasing tag order.
-    num_ifd_entries, 0,       // Number of entries in the IFD (12 bytes each).
-    0x00, 0x01, 3, 0, 1, 0, 0, 0, 0, 0, 0, 0,    //  10: Width  (TBD)
-    0x01, 0x01, 3, 0, 1, 0, 0, 0, 0, 0, 0, 0,    //  22: Height (TBD)
-    0x02, 0x01, 3, 0, bytes_per_px, 0, 0, 0,     //  34: BitsPerSample: 8888
-        EXTRA_DATA_OFFSET + 0, 0, 0, 0,
-    0x03, 0x01, 3, 0, 1, 0, 0, 0, 1, 0, 0, 0,    //  46: Compression: none
-    0x06, 0x01, 3, 0, 1, 0, 0, 0, 2, 0, 0, 0,    //  58: Photometric: RGB
-    0x11, 0x01, 4, 0, 1, 0, 0, 0,                //  70: Strips offset:
-        TIFF_HEADER_SIZE, 0, 0, 0,               //      data follows header
-    0x12, 0x01, 3, 0, 1, 0, 0, 0, 1, 0, 0, 0,    //  82: Orientation: topleft
-    0x15, 0x01, 3, 0, 1, 0, 0, 0,                //  94: SamplesPerPixels
-        bytes_per_px, 0, 0, 0,
-    0x16, 0x01, 3, 0, 1, 0, 0, 0, 0, 0, 0, 0,    // 106: Rows per strip (TBD)
-    0x17, 0x01, 4, 0, 1, 0, 0, 0, 0, 0, 0, 0,    // 118: StripByteCount (TBD)
-    0x1a, 0x01, 5, 0, 1, 0, 0, 0,                // 130: X-resolution
-        EXTRA_DATA_OFFSET + 8, 0, 0, 0,
-    0x1b, 0x01, 5, 0, 1, 0, 0, 0,                // 142: Y-resolution
-        EXTRA_DATA_OFFSET + 8, 0, 0, 0,
-    0x1c, 0x01, 3, 0, 1, 0, 0, 0, 1, 0, 0, 0,    // 154: PlanarConfiguration
-    0x28, 0x01, 3, 0, 1, 0, 0, 0, 2, 0, 0, 0,    // 166: ResolutionUnit (inch)
-    0x52, 0x01, 3, 0, 1, 0, 0, 0,
-        assoc_alpha, 0, 0, 0,                    // 178: ExtraSamples: rgbA/RGBA
-    0, 0, 0, 0,                                  // 190: IFD terminator
-    // EXTRA_DATA_OFFSET:
-    8, 0, 8, 0, 8, 0, 8, 0,      // BitsPerSample
-    72, 0, 0, 0, 1, 0, 0, 0      // 72 pixels/inch, for X/Y-resolution
+      0x49, 0x49, 0x2a, 0x00,  // little endian signature
+      8, 0, 0, 0,              // offset to the unique IFD that follows
+      // IFD (offset = 8). Entries must be written in increasing tag order.
+      num_ifd_entries, 0,  // Number of entries in the IFD (12 bytes each).
+      0x00, 0x01, 3, 0, 1, 0, 0, 0, 0, 0, 0, 0,  //  10: Width  (TBD)
+      0x01, 0x01, 3, 0, 1, 0, 0, 0, 0, 0, 0, 0,  //  22: Height (TBD)
+      0x02, 0x01, 3, 0, bytes_per_px, 0, 0, 0,   //  34: BitsPerSample: 8888
+      EXTRA_DATA_OFFSET + 0, 0, 0, 0, 0x03, 0x01, 3, 0, 1, 0, 0, 0, 1, 0, 0,
+      0,                                         //  46: Compression: none
+      0x06, 0x01, 3, 0, 1, 0, 0, 0, 2, 0, 0, 0,  //  58: Photometric: RGB
+      0x11, 0x01, 4, 0, 1, 0, 0, 0,              //  70: Strips offset:
+      TIFF_HEADER_SIZE, 0, 0, 0,                 //      data follows header
+      0x12, 0x01, 3, 0, 1, 0, 0, 0, 1, 0, 0, 0,  //  82: Orientation: topleft
+      0x15, 0x01, 3, 0, 1, 0, 0, 0,              //  94: SamplesPerPixels
+      bytes_per_px, 0, 0, 0, 0x16, 0x01, 3, 0, 1, 0, 0, 0, 0, 0, 0,
+      0,                                         // 106: Rows per strip (TBD)
+      0x17, 0x01, 4, 0, 1, 0, 0, 0, 0, 0, 0, 0,  // 118: StripByteCount (TBD)
+      0x1a, 0x01, 5, 0, 1, 0, 0, 0,              // 130: X-resolution
+      EXTRA_DATA_OFFSET + 8, 0, 0, 0, 0x1b, 0x01, 5, 0, 1, 0, 0,
+      0,  // 142: Y-resolution
+      EXTRA_DATA_OFFSET + 8, 0, 0, 0, 0x1c, 0x01, 3, 0, 1, 0, 0, 0, 1, 0, 0,
+      0,                                         // 154: PlanarConfiguration
+      0x28, 0x01, 3, 0, 1, 0, 0, 0, 2, 0, 0, 0,  // 166: ResolutionUnit (inch)
+      0x52, 0x01, 3, 0, 1, 0, 0, 0, assoc_alpha, 0, 0,
+      0,           // 178: ExtraSamples: rgbA/RGBA
+      0, 0, 0, 0,  // 190: IFD terminator
+      // EXTRA_DATA_OFFSET:
+      8, 0, 8, 0, 8, 0, 8, 0,  // BitsPerSample
+      72, 0, 0, 0, 1, 0, 0, 0  // 72 pixels/inch, for X/Y-resolution
  };
  uint32_t y;

@@ -514,11 +518,11 @@ int WebPWritePGM(FILE* fout, const WebPDecBuffer* const buffer) {

    if (src_y == NULL || src_u == NULL || src_v == NULL) return 0;

-    fprintf(fout, "P5\n%d %d\n255\n",
-            (width + 1) & ~1, height + uv_height + a_height);
+    fprintf(fout, "P5\n%d %d\n255\n", (width + 1) & ~1,
+            height + uv_height + a_height);
    for (y = 0; ok && y < height; ++y) {
      ok &= (fwrite(src_y, width, 1, fout) == 1);
-      if (width & 1) fputc(0, fout);    // padding byte
+      if (width & 1) fputc(0, fout);  // padding byte
      src_y += yuv->y_stride;
    }
    for (y = 0; ok && y < uv_height; ++y) {
@@ -529,7 +533,7 @@ int WebPWritePGM(FILE* fout, const WebPDecBuffer* const buffer) {
    }
    for (y = 0; ok && y < a_height; ++y) {
      ok &= (fwrite(src_a, width, 1, fout) == 1);
-      if (width & 1) fputc(0, fout);    // padding byte
+      if (width & 1) fputc(0, fout);  // padding byte
      src_a += yuv->a_stride;
    }
    return ok;
@@ -606,8 +610,7 @@ int WebPSaveImage(const WebPDecBuffer* const buffer,
    }
  }

-  if (format == PNG ||
-      format == RGBA || format == BGRA || format == ARGB ||
+  if (format == PNG || format == RGBA || format == BGRA || format == ARGB ||
      format == rgbA || format == bgrA || format == Argb) {
 #ifdef HAVE_WINCODEC_H
    ok &= WebPWritePNG(out_file_name, use_stdout, buffer);
--- a/imageio/image_enc.h
+++ b/imageio/image_enc.h
@@ -20,8 +20,8 @@
 #include "webp/config.h"
 #endif

-#include "webp/types.h"
 #include "webp/decode.h"
+#include "webp/types.h"

 #ifdef __cplusplus
 extern "C" {
@@ -38,10 +38,19 @@ typedef enum {
  RAW_YUV,
  ALPHA_PLANE_ONLY,  // this is for experimenting only
  // forced colorspace output (for testing, mostly)
-  RGB, RGBA, BGR, BGRA, ARGB,
-  RGBA_4444, RGB_565,
-  rgbA, bgrA, Argb, rgbA_4444,
-  YUV, YUVA
+  RGB,
+  RGBA,
+  BGR,
+  BGRA,
+  ARGB,
+  RGBA_4444,
+  RGB_565,
+  rgbA,
+  bgrA,
+  Argb,
+  rgbA_4444,
+  YUV,
+  YUVA
 } WebPOutputFileFormat;

 // General all-purpose call.
@@ -90,7 +99,7 @@ int WebPWriteYUV(FILE* fout, const struct WebPDecBuffer* const buffer);
 int WebPWrite16bAsPGM(FILE* fout, const struct WebPDecBuffer* const buffer);

 #ifdef __cplusplus
-}    // extern "C"
+}  // extern "C"
 #endif

 #endif  // WEBP_IMAGEIO_IMAGE_ENC_H_
--- a/imageio/imageio_util.c
+++ b/imageio/imageio_util.c
@@ -13,12 +13,15 @@
 #include "./imageio_util.h"

 #if defined(_WIN32)
-#include <fcntl.h>   // for _O_BINARY
-#include <io.h>      // for _setmode()
+#include <fcntl.h>  // for _O_BINARY
+#include <io.h>     // for _setmode()
 #endif
+#include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+
 #include "../examples/unicode.h"
+#include "webp/types.h"

 // -----------------------------------------------------------------------------
 // File I/O
@@ -62,14 +65,14 @@ int ImgIoUtilReadFromStdin(const uint8_t** data, size_t* data_size) {
  *data_size = size;
  return 1;

- Error:
+Error:
  free(input);
  fprintf(stderr, "Could not read from stdin\n");
  return 0;
 }

-int ImgIoUtilReadFile(const char* const file_name,
-                      const uint8_t** data, size_t* data_size) {
+int ImgIoUtilReadFile(const char* const file_name, const uint8_t** data,
+                      size_t* data_size) {
  int ok;
  uint8_t* file_data;
  size_t file_size;
@@ -120,8 +123,8 @@ int ImgIoUtilReadFile(const char* const file_name,

 // -----------------------------------------------------------------------------

-int ImgIoUtilWriteFile(const char* const file_name,
-                       const uint8_t* data, size_t data_size) {
+int ImgIoUtilWriteFile(const char* const file_name, const uint8_t* data,
+                       size_t data_size) {
  int ok;
  FILE* out;
  const int to_stdout = (file_name == NULL) || !WSTRCMP(file_name, "-");
@@ -142,8 +145,8 @@ int ImgIoUtilWriteFile(const char* const file_name,

 // -----------------------------------------------------------------------------

-void ImgIoUtilCopyPlane(const uint8_t* src, int src_stride,
-                        uint8_t* dst, int dst_stride, int width, int height) {
+void ImgIoUtilCopyPlane(const uint8_t* src, int src_stride, uint8_t* dst,
+                        int dst_stride, int width, int height) {
  while (height-- > 0) {
    memcpy(dst, src, width * sizeof(*dst));
    src += src_stride;
--- a/imageio/imageio_util.h
+++ b/imageio/imageio_util.h
@@ -14,6 +14,7 @@
 #define WEBP_IMAGEIO_IMAGEIO_UTIL_H_

 #include <stdio.h>
+
 #include "webp/types.h"

 #ifdef __cplusplus
@@ -35,22 +36,22 @@ FILE* ImgIoUtilSetBinaryMode(FILE* file);
 // to be used as a C-string.
 // If 'file_name' is NULL or equal to "-", input is read from stdin by calling
 // the function ImgIoUtilReadFromStdin().
-int ImgIoUtilReadFile(const char* const file_name,
-                      const uint8_t** data, size_t* data_size);
+int ImgIoUtilReadFile(const char* const file_name, const uint8_t** data,
+                      size_t* data_size);

 // Same as ImgIoUtilReadFile(), but reads until EOF from stdin instead.
 int ImgIoUtilReadFromStdin(const uint8_t** data, size_t* data_size);

 // Write a data segment into a file named 'file_name'. Returns true if ok.
 // If 'file_name' is NULL or equal to "-", output is written to stdout.
-int ImgIoUtilWriteFile(const char* const file_name,
-                       const uint8_t* data, size_t data_size);
+int ImgIoUtilWriteFile(const char* const file_name, const uint8_t* data,
+                       size_t data_size);

 //------------------------------------------------------------------------------

 // Copy width x height pixels from 'src' to 'dst' honoring the strides.
-void ImgIoUtilCopyPlane(const uint8_t* src, int src_stride,
-                        uint8_t* dst, int dst_stride, int width, int height);
+void ImgIoUtilCopyPlane(const uint8_t* src, int src_stride, uint8_t* dst,
+                        int dst_stride, int width, int height);

 //------------------------------------------------------------------------------

@@ -58,7 +59,7 @@ void ImgIoUtilCopyPlane(const uint8_t* src, int src_stride,
 int ImgIoUtilCheckSizeArgumentsOverflow(uint64_t stride, size_t height);

 #ifdef __cplusplus
-}    // extern "C"
+}  // extern "C"
 #endif

 #endif  // WEBP_IMAGEIO_IMAGEIO_UTIL_H_
--- a/imageio/jpegdec.c
+++ b/imageio/jpegdec.c
@@ -18,24 +18,25 @@
 #include <stdio.h>

 #ifdef WEBP_HAVE_JPEG
-#include <jpeglib.h>
 #include <jerror.h>
+#include <jpeglib.h>
 #include <setjmp.h>
 #include <stdlib.h>
 #include <string.h>

-#include "webp/encode.h"
 #include "./imageio_util.h"
 #include "./metadata.h"
+#include "webp/encode.h"
+#include "webp/types.h"

 // -----------------------------------------------------------------------------
 // Metadata processing

 #ifndef JPEG_APP1
-# define JPEG_APP1 (JPEG_APP0 + 1)
+#define JPEG_APP1 (JPEG_APP0 + 1)
 #endif
 #ifndef JPEG_APP2
-# define JPEG_APP2 (JPEG_APP0 + 2)
+#define JPEG_APP2 (JPEG_APP0 + 2)
 #endif

 typedef struct {
@@ -63,7 +64,7 @@ static int StoreICCP(j_decompress_ptr dinfo, MetadataPayload* const iccp) {
  // ICC.1:2010-12 (4.3.0.0) Annex B.4 Embedding ICC Profiles in JPEG files
  static const char kICCPSignature[] = "ICC_PROFILE";
  static const size_t kICCPSignatureLength = 12;  // signature includes '\0'
-  static const size_t kICCPSkipLength = 14;  // signature + seq & count
+  static const size_t kICCPSkipLength = 14;       // signature + seq & count
  int expected_count = 0;
  int actual_count = 0;
  int seq_max = 0;
@@ -73,8 +74,7 @@ static int StoreICCP(j_decompress_ptr dinfo, MetadataPayload* const iccp) {

  memset(iccp_segments, 0, sizeof(iccp_segments));
  for (marker = dinfo->marker_list; marker != NULL; marker = marker->next) {
-    if (marker->marker == JPEG_APP2 &&
-        marker->data_length > kICCPSkipLength &&
+    if (marker->marker == JPEG_APP2 && marker->data_length > kICCPSkipLength &&
        !memcmp(marker->data, kICCPSignature, kICCPSignatureLength)) {
      // ICC_PROFILE\0<seq><count>; 'seq' starts at 1.
      const int seq = marker->data[kICCPSignatureLength];
@@ -83,8 +83,9 @@ static int StoreICCP(j_decompress_ptr dinfo, MetadataPayload* const iccp) {
      ICCPSegment* segment;

      if (segment_size == 0 || count == 0 || seq == 0) {
-        fprintf(stderr, "[ICCP] size (%d) / count (%d) / sequence number (%d)"
-                        " cannot be 0!\n",
+        fprintf(stderr,
+                "[ICCP] size (%d) / count (%d) / sequence number (%d)"
+                " cannot be 0!\n",
                (int)segment_size, seq, count);
        return 0;
      }
@@ -99,7 +100,7 @@ static int StoreICCP(j_decompress_ptr dinfo, MetadataPayload* const iccp) {

      segment = iccp_segments + seq - 1;
      if (segment->data_length != 0) {
-        fprintf(stderr, "[ICCP] Duplicate segment number (%d)!\n" , seq);
+        fprintf(stderr, "[ICCP] Duplicate segment number (%d)!\n", seq);
        return 0;
      }

@@ -137,8 +138,8 @@ static int StoreICCP(j_decompress_ptr dinfo, MetadataPayload* const iccp) {
    int i;
    size_t offset = 0;
    for (i = 0; i < seq_max; ++i) {
-      memcpy(iccp->bytes + offset,
-             iccp_segments[i].data, iccp_segments[i].data_length);
+      memcpy(iccp->bytes + offset, iccp_segments[i].data,
+             iccp_segments[i].data_length);
      offset += iccp_segments[i].data_length;
    }
  }
@@ -155,12 +156,12 @@ static int ExtractMetadataFromJPEG(j_decompress_ptr dinfo,
    size_t signature_length;
    size_t storage_offset;
  } kJPEGMetadataMap[] = {
-    // Exif 2.2 Section 4.7.2 Interoperability Structure of APP1 ...
-    { JPEG_APP1, "Exif\0",                        6, METADATA_OFFSET(exif) },
-    // XMP Specification Part 3 Section 3 Embedding XMP Metadata ... #JPEG
-    // TODO(jzern) Add support for 'ExtendedXMP'
-    { JPEG_APP1, "http://ns.adobe.com/xap/1.0/", 29, METADATA_OFFSET(xmp) },
-    { 0, NULL, 0, 0 },
+      // Exif 2.2 Section 4.7.2 Interoperability Structure of APP1 ...
+      {JPEG_APP1, "Exif\0", 6, METADATA_OFFSET(exif)},
+      // XMP Specification Part 3 Section 3 Embedding XMP Metadata ... #JPEG
+      // TODO(jzern) Add support for 'ExtendedXMP'
+      {JPEG_APP1, "http://ns.adobe.com/xap/1.0/", 29, METADATA_OFFSET(xmp)},
+      {0, NULL, 0, 0},
  };
  jpeg_saved_marker_ptr marker;
  // Treat ICC profiles separately as they may be segmented and out of order.
@@ -178,8 +179,8 @@ static int ExtractMetadataFromJPEG(j_decompress_ptr dinfo,
                               kJPEGMetadataMap[i].storage_offset);

        if (payload->bytes == NULL) {
-          const char* marker_data = (const char*)marker->data +
-                                    kJPEGMetadataMap[i].signature_length;
+          const char* marker_data =
+              (const char*)marker->data + kJPEGMetadataMap[i].signature_length;
          const size_t marker_data_length =
              marker->data_length - kJPEGMetadataMap[i].signature_length;
          if (!MetadataCopy(marker_data, marker_data_length, payload)) return 0;
@@ -249,9 +250,7 @@ static void ContextSkip(j_decompress_ptr cinfo, long jump_size) {
  ctx->pub.next_input_byte += jump;
 }

-static void ContextTerm(j_decompress_ptr cinfo) {
-  (void)cinfo;
-}
+static void ContextTerm(j_decompress_ptr cinfo) { (void)cinfo; }

 static void ContextSetup(volatile struct jpeg_decompress_struct* const cinfo,
                         JPEGReadContext* const ctx) {
@@ -266,8 +265,7 @@ static void ContextSetup(volatile struct jpeg_decompress_struct* const cinfo,
 }

 int ReadJPEG(const uint8_t* const data, size_t data_size,
-             WebPPicture* const pic, int keep_alpha,
-             Metadata* const metadata) {
+             WebPPicture* const pic, int keep_alpha, Metadata* const metadata) {
  volatile int ok = 0;
  int width, height;
  int64_t stride;
@@ -284,12 +282,12 @@ int ReadJPEG(const uint8_t* const data, size_t data_size,
  ctx.data = data;
  ctx.data_size = data_size;

-  memset((j_decompress_ptr)&dinfo, 0, sizeof(dinfo));   // for setjmp safety
+  memset((j_decompress_ptr)&dinfo, 0, sizeof(dinfo));  // for setjmp safety
  dinfo.err = jpeg_std_error(&jerr.pub);
  jerr.pub.error_exit = my_error_exit;

  if (setjmp(jerr.setjmp_buffer)) {
- Error:
+  Error:
    MetadataFree(metadata);
    jpeg_destroy_decompress((j_decompress_ptr)&dinfo);
    goto End;
@@ -352,11 +350,11 @@ int ReadJPEG(const uint8_t* const data, size_t data_size,
    MetadataFree(metadata);  // In case the caller forgets to free it on error.
  }

- End:
+End:
  free(rgb);
  return ok;
 }
-#else  // !WEBP_HAVE_JPEG
+#else   // !WEBP_HAVE_JPEG
 int ReadJPEG(const uint8_t* const data, size_t data_size,
             struct WebPPicture* const pic, int keep_alpha,
             struct Metadata* const metadata) {
@@ -365,7 +363,8 @@ int ReadJPEG(const uint8_t* const data, size_t data_size,
  (void)pic;
  (void)keep_alpha;
  (void)metadata;
-  fprintf(stderr, "JPEG support not compiled. Please install the libjpeg "
+  fprintf(stderr,
+          "JPEG support not compiled. Please install the libjpeg "
          "development package before building.\n");
  return 0;
 }
--- a/imageio/jpegdec.h
+++ b/imageio/jpegdec.h
@@ -12,6 +12,8 @@
 #ifndef WEBP_IMAGEIO_JPEGDEC_H_
 #define WEBP_IMAGEIO_JPEGDEC_H_

+#include <stddef.h>
+
 #include "webp/types.h"

 #ifdef __cplusplus
@@ -31,7 +33,7 @@ int ReadJPEG(const uint8_t* const data, size_t data_size,
             struct Metadata* const metadata);

 #ifdef __cplusplus
-}    // extern "C"
+}  // extern "C"
 #endif

 #endif  // WEBP_IMAGEIO_JPEGDEC_H_
--- a/imageio/metadata.h
+++ b/imageio/metadata.h
@@ -13,6 +13,8 @@
 #ifndef WEBP_IMAGEIO_METADATA_H_
 #define WEBP_IMAGEIO_METADATA_H_

+#include <stddef.h>
+
 #include "webp/types.h"

 #ifdef __cplusplus
@@ -41,7 +43,7 @@ int MetadataCopy(const char* metadata, size_t metadata_len,
                 MetadataPayload* const payload);

 #ifdef __cplusplus
-}    // extern "C"
+}  // extern "C"
 #endif

 #endif  // WEBP_IMAGEIO_METADATA_H_
--- a/imageio/pngdec.c
+++ b/imageio/pngdec.c
@@ -22,24 +22,24 @@
 #define PNG_USER_MEM_SUPPORTED  // for png_create_read_struct_2
 #endif
 #include <png.h>
-#include <setjmp.h>   // note: this must be included *after* png.h
+#include <setjmp.h>  // note: this must be included *after* png.h
 #include <stdlib.h>
 #include <string.h>

-#include "webp/encode.h"
 #include "./imageio_util.h"
 #include "./metadata.h"
+#include "webp/encode.h"
+#include "webp/types.h"

 #define LOCAL_PNG_VERSION ((PNG_LIBPNG_VER_MAJOR << 8) | PNG_LIBPNG_VER_MINOR)
-#define LOCAL_PNG_PREREQ(maj, min) \
-   (LOCAL_PNG_VERSION >= (((maj) << 8) | (min)))
+#define LOCAL_PNG_PREREQ(maj, min) (LOCAL_PNG_VERSION >= (((maj) << 8) | (min)))

 static void PNGAPI error_function(png_structp png, png_const_charp error) {
  if (error != NULL) fprintf(stderr, "libpng error: %s\n", error);
  longjmp(png_jmpbuf(png), 1);
 }

-#if LOCAL_PNG_PREREQ(1,4)
+#if LOCAL_PNG_PREREQ(1, 4)
 typedef png_alloc_size_t LocalPngAllocSize;
 #else
 typedef png_size_t LocalPngAllocSize;
@@ -111,7 +111,8 @@ static int ProcessRawProfile(const char* profile, size_t profile_len,
  }
  ++src;
  // skip the profile name and extract the length.
-  while (*src != '\0' && *src++ != '\n') {}
+  while (*src != '\0' && *src++ != '\n') {
+  }
  expected_length = (int)strtol(src, &end, 10);
  if (*end != '\n') {
    fprintf(stderr, "Malformed raw profile, expected '\\n' got '\\x%.2X'\n",
@@ -133,32 +134,47 @@ static const struct {
                 MetadataPayload* const payload);
  size_t storage_offset;
 } kPNGMetadataMap[] = {
-  // https://exiftool.org/TagNames/PNG.html#TextualData
-  // See also: ExifTool on CPAN.
-  { "Raw profile type exif", ProcessRawProfile, METADATA_OFFSET(exif) },
-  { "Raw profile type xmp",  ProcessRawProfile, METADATA_OFFSET(xmp) },
-  // Exiftool puts exif data in APP1 chunk, too.
-  { "Raw profile type APP1", ProcessRawProfile, METADATA_OFFSET(exif) },
-  // XMP Specification Part 3, Section 3 #PNG
-  { "XML:com.adobe.xmp",     MetadataCopy,      METADATA_OFFSET(xmp) },
-  { NULL, NULL, 0 },
+    // https://exiftool.org/TagNames/PNG.html#TextualData
+    // See also: ExifTool on CPAN.
+    {"Raw profile type exif", ProcessRawProfile, METADATA_OFFSET(exif)},
+    {"Raw profile type xmp", ProcessRawProfile, METADATA_OFFSET(xmp)},
+    // Exiftool puts exif data in APP1 chunk, too.
+    {"Raw profile type APP1", ProcessRawProfile, METADATA_OFFSET(exif)},
+    // ImageMagick uses lowercase app1.
+    {"Raw profile type app1", ProcessRawProfile, METADATA_OFFSET(exif)},
+    // XMP Specification Part 3, Section 3 #PNG
+    {"XML:com.adobe.xmp", MetadataCopy, METADATA_OFFSET(xmp)},
+    {NULL, NULL, 0},
 };

 // Looks for metadata at both the beginning and end of the PNG file, giving
 // preference to the head.
 // Returns true on success. The caller must use MetadataFree() on 'metadata' in
 // all cases.
-static int ExtractMetadataFromPNG(png_structp png,
-                                  png_infop const head_info,
+static int ExtractMetadataFromPNG(png_structp png, png_infop const head_info,
                                  png_infop const end_info,
                                  Metadata* const metadata) {
  int p;

-  for (p = 0; p < 2; ++p)  {
+  for (p = 0; p < 2; ++p) {
    png_infop const info = (p == 0) ? head_info : end_info;
    png_textp text = NULL;
    const png_uint_32 num = png_get_text(png, info, &text, NULL);
    png_uint_32 i;
+
+#ifdef PNG_eXIf_SUPPORTED
+    // Look for an 'eXIf' tag. Preference is given to this tag as it's newer
+    // than the TextualData tags.
+    {
+      png_bytep exif;
+      png_uint_32 len;
+
+      if (png_get_eXIf_1(png, info, &len, &exif) == PNG_INFO_eXIf) {
+        if (!MetadataCopy((const char*)exif, len, &metadata->exif)) return 0;
+      }
+    }
+#endif  // PNG_eXIf_SUPPORTED
+
    // Look for EXIF / XMP metadata.
    for (i = 0; i < num; ++i, ++text) {
      int j;
@@ -192,22 +208,24 @@ static int ExtractMetadataFromPNG(png_structp png,
        }
      }
    }
+#ifdef PNG_iCCP_SUPPORTED
    // Look for an ICC profile.
    {
      png_charp name;
      int comp_type;
-#if LOCAL_PNG_PREREQ(1,5)
+#if LOCAL_PNG_PREREQ(1, 5)
      png_bytep profile;
 #else
      png_charp profile;
 #endif
      png_uint_32 len;

-      if (png_get_iCCP(png, info,
-                       &name, &comp_type, &profile, &len) == PNG_INFO_iCCP) {
+      if (png_get_iCCP(png, info, &name, &comp_type, &profile, &len) ==
+          PNG_INFO_iCCP) {
        if (!MetadataCopy((const char*)profile, len, &metadata->iccp)) return 0;
      }
    }
+#endif  // PNG_iCCP_SUPPORTED
  }
  return 1;
 }
@@ -228,12 +246,12 @@ static void ReadFunc(png_structp png_ptr, png_bytep data, png_size_t length) {
 }

 int ReadPNG(const uint8_t* const data, size_t data_size,
-            struct WebPPicture* const pic,
-            int keep_alpha, struct Metadata* const metadata) {
+            struct WebPPicture* const pic, int keep_alpha,
+            struct Metadata* const metadata) {
  volatile png_structp png = NULL;
  volatile png_infop info = NULL;
  volatile png_infop end_info = NULL;
-  PNGReadContext context = { NULL, 0, 0 };
+  PNGReadContext context = {NULL, 0, 0};
  int color_type, bit_depth, interlaced;
  int num_channels;
  int num_passes;
@@ -248,19 +266,19 @@ int ReadPNG(const uint8_t* const data, size_t data_size,
  context.data = data;
  context.data_size = data_size;

-  png = png_create_read_struct_2(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL,
-                                 NULL, MallocFunc, FreeFunc);
+  png = png_create_read_struct_2(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL, NULL,
+                                 MallocFunc, FreeFunc);
  if (png == NULL) goto End;

  png_set_error_fn(png, 0, error_function, NULL);
  if (setjmp(png_jmpbuf(png))) {
- Error:
+  Error:
    MetadataFree(metadata);
    goto End;
  }

-#if LOCAL_PNG_PREREQ(1,5) || \
-    (LOCAL_PNG_PREREQ(1,4) && PNG_LIBPNG_VER_RELEASE >= 1)
+#if LOCAL_PNG_PREREQ(1, 5) || \
+    (LOCAL_PNG_PREREQ(1, 4) && PNG_LIBPNG_VER_RELEASE >= 1)
  // If it looks like the bitstream is going to need more memory than libpng's
  // internal limit (default: 8M), try to (reasonably) raise it.
  if (data_size > png_get_chunk_malloc_max(png) && data_size < (1u << 24)) {
@@ -275,9 +293,9 @@ int ReadPNG(const uint8_t* const data, size_t data_size,

  png_set_read_fn(png, &context, ReadFunc);
  png_read_info(png, info);
-  if (!png_get_IHDR(png, info,
-                    &width, &height, &bit_depth, &color_type, &interlaced,
-                    NULL, NULL)) goto Error;
+  if (!png_get_IHDR(png, info, &width, &height, &bit_depth, &color_type,
+                    &interlaced, NULL, NULL))
+    goto Error;

  png_set_strip_16(png);
  png_set_packing(png);
@@ -348,24 +366,25 @@ int ReadPNG(const uint8_t* const data, size_t data_size,
    goto Error;
  }

- End:
+End:
  if (png != NULL) {
-    png_destroy_read_struct((png_structpp)&png,
-                            (png_infopp)&info, (png_infopp)&end_info);
+    png_destroy_read_struct((png_structpp)&png, (png_infopp)&info,
+                            (png_infopp)&end_info);
  }
  free(rgb);
  return ok;
 }
-#else  // !WEBP_HAVE_PNG
+#else   // !WEBP_HAVE_PNG
 int ReadPNG(const uint8_t* const data, size_t data_size,
-            struct WebPPicture* const pic,
-            int keep_alpha, struct Metadata* const metadata) {
+            struct WebPPicture* const pic, int keep_alpha,
+            struct Metadata* const metadata) {
  (void)data;
  (void)data_size;
  (void)pic;
  (void)keep_alpha;
  (void)metadata;
-  fprintf(stderr, "PNG support not compiled. Please install the libpng "
+  fprintf(stderr,
+          "PNG support not compiled. Please install the libpng "
          "development package before building.\n");
  return 0;
 }
--- a/imageio/pngdec.h
+++ b/imageio/pngdec.h
@@ -12,6 +12,8 @@
 #ifndef WEBP_IMAGEIO_PNGDEC_H_
 #define WEBP_IMAGEIO_PNGDEC_H_

+#include <stddef.h>
+
 #include "webp/types.h"

 #ifdef __cplusplus
@@ -27,11 +29,11 @@ struct WebPPicture;
 // or YUVA. Otherwise, alpha channel is dropped and output is RGB or YUV.
 // Returns true on success.
 int ReadPNG(const uint8_t* const data, size_t data_size,
-            struct WebPPicture* const pic,
-            int keep_alpha, struct Metadata* const metadata);
+            struct WebPPicture* const pic, int keep_alpha,
+            struct Metadata* const metadata);

 #ifdef __cplusplus
-}    // extern "C"
+}  // extern "C"
 #endif

 #endif  // WEBP_IMAGEIO_PNGDEC_H_
--- a/imageio/pnmdec.c
+++ b/imageio/pnmdec.c
@@ -17,19 +17,20 @@
 #include <stdlib.h>
 #include <string.h>

-#include "webp/encode.h"
 #include "./imageio_util.h"
+#include "webp/encode.h"
+#include "webp/types.h"

 #if defined(_MSC_VER) && _MSC_VER < 1900
 #define snprintf _snprintf
 #endif

 typedef enum {
-  WIDTH_FLAG      = 1 << 0,
-  HEIGHT_FLAG     = 1 << 1,
-  DEPTH_FLAG      = 1 << 2,
-  MAXVAL_FLAG     = 1 << 3,
-  TUPLE_FLAG      = 1 << 4,
+  WIDTH_FLAG = 1 << 0,
+  HEIGHT_FLAG = 1 << 1,
+  DEPTH_FLAG = 1 << 2,
+  MAXVAL_FLAG = 1 << 3,
+  TUPLE_FLAG = 1 << 4,
  ALL_NEEDED_FLAGS = WIDTH_FLAG | HEIGHT_FLAG | DEPTH_FLAG | MAXVAL_FLAG
 } PNMFlags;

@@ -38,9 +39,9 @@ typedef struct {
  size_t data_size;
  int width, height;
  int bytes_per_px;
-  int depth;          // 1 (grayscale), 2 (grayscale + alpha), 3 (rgb), 4 (rgba)
+  int depth;  // 1 (grayscale), 2 (grayscale + alpha), 3 (rgb), 4 (rgba)
  int max_value;
-  int type;           // 5, 6 or 7
+  int type;  // 5, 6 or 7
  int seen_flags;
 } PNMInfo;

@@ -54,7 +55,7 @@ static size_t ReadLine(const uint8_t* const data, size_t off, size_t data_size,
                       char out[MAX_LINE_SIZE + 1], size_t* const out_size) {
  size_t i = 0;
  *out_size = 0;
- redo:
+redo:
  for (i = 0; i < MAX_LINE_SIZE && off < data_size; ++i) {
    out[i] = data[off++];
    if (out[i] == '\n') break;
@@ -63,7 +64,7 @@ static size_t ReadLine(const uint8_t* const data, size_t off, size_t data_size,
    if (i == 0) goto redo;         // empty line
    if (out[0] == '#') goto redo;  // skip comment
  }
-  out[i] = 0;   // safety sentinel
+  out[i] = 0;  // safety sentinel
  *out_size = i;
  return off;
 }
@@ -172,9 +173,8 @@ static size_t ReadHeader(PNMInfo* const info) {
    info->depth = (info->type == 5) ? 1 : 3;
  }
  // perform some basic numerical validation
-  if (info->width <= 0 || info->height <= 0 ||
-      info->type <= 0 || info->type >= 9 ||
-      info->depth <= 0 || info->depth > 4 ||
+  if (info->width <= 0 || info->height <= 0 || info->type <= 0 ||
+      info->type >= 9 || info->depth <= 0 || info->depth > 4 ||
      info->max_value <= 0 || info->max_value >= 65536) {
    return 0;
  }
@@ -182,13 +182,12 @@ static size_t ReadHeader(PNMInfo* const info) {
  return off;
 }

-int ReadPNM(const uint8_t* const data, size_t data_size,
-            WebPPicture* const pic, int keep_alpha,
-            struct Metadata* const metadata) {
+int ReadPNM(const uint8_t* const data, size_t data_size, WebPPicture* const pic,
+            int keep_alpha, struct Metadata* const metadata) {
  int ok = 0;
  int i, j;
  uint64_t stride, pixel_bytes, sample_size, depth;
-  uint8_t* rgb = NULL, *tmp_rgb;
+  uint8_t *rgb = NULL, *tmp_rgb;
  size_t offset;
  PNMInfo info;

@@ -208,8 +207,8 @@ int ReadPNM(const uint8_t* const data, size_t data_size,
  // Some basic validations.
  if (pic == NULL) goto End;
  if (info.width > WEBP_MAX_DIMENSION || info.height > WEBP_MAX_DIMENSION) {
-    fprintf(stderr, "Invalid %dx%d dimension for PNM\n",
-                    info.width, info.height);
+    fprintf(stderr, "Invalid %dx%d dimension for PNM\n", info.width,
+            info.height);
    goto End;
  }

@@ -257,8 +256,8 @@ int ReadPNM(const uint8_t* const data, size_t data_size,
      const uint32_t round = info.max_value / 2;
      int k = 0;
      for (i = 0; i < info.width * info.depth; ++i) {
-        uint32_t v = (sample_size == 2) ? 256u * in[2 * i + 0] + in[2 * i + 1]
-                   : in[i];
+        uint32_t v =
+            (sample_size == 2) ? 256u * in[2 * i + 0] + in[2 * i + 1] : in[i];
        if (info.max_value != 255) v = (v * 255u + round) / info.max_value;
        if (v > 255u) v = 255u;
        if (info.depth > 2) {
@@ -290,7 +289,7 @@ int ReadPNM(const uint8_t* const data, size_t data_size,
  if (!ok) goto End;

  ok = 1;
- End:
+End:
  free((void*)rgb);

  (void)metadata;
--- a/imageio/pnmdec.h
+++ b/imageio/pnmdec.h
@@ -12,6 +12,8 @@
 #ifndef WEBP_IMAGEIO_PNMDEC_H_
 #define WEBP_IMAGEIO_PNMDEC_H_

+#include <stddef.h>
+
 #include "webp/types.h"

 #ifdef __cplusplus
@@ -31,7 +33,7 @@ int ReadPNM(const uint8_t* const data, size_t data_size,
            struct Metadata* const metadata);

 #ifdef __cplusplus
-}    // extern "C"
+}  // extern "C"
 #endif

 #endif  // WEBP_IMAGEIO_PNMDEC_H_
--- a/imageio/tiffdec.c
+++ b/imageio/tiffdec.c
@@ -22,17 +22,18 @@
 #ifdef WEBP_HAVE_TIFF
 #include <tiffio.h>

-#include "webp/encode.h"
 #include "./imageio_util.h"
 #include "./metadata.h"
+#include "webp/encode.h"
+#include "webp/types.h"

 static const struct {
  ttag_t tag;
  size_t storage_offset;
 } kTIFFMetadataMap[] = {
-  { TIFFTAG_ICCPROFILE, METADATA_OFFSET(iccp) },
-  { TIFFTAG_XMLPACKET,  METADATA_OFFSET(xmp) },
-  { 0, 0 },
+    {TIFFTAG_ICCPROFILE, METADATA_OFFSET(iccp)},
+    {TIFFTAG_XMLPACKET, METADATA_OFFSET(xmp)},
+    {0, 0},
 };

 // Returns true on success. The caller must use MetadataFree() on 'metadata' in
@@ -85,9 +86,9 @@ static toff_t MySize(thandle_t opaque) {

 static toff_t MySeek(thandle_t opaque, toff_t offset, int whence) {
  MyData* const my_data = (MyData*)opaque;
-  offset += (whence == SEEK_CUR) ? my_data->pos
-          : (whence == SEEK_SET) ? 0
-          : my_data->size;
+  offset += (whence == SEEK_CUR)   ? my_data->pos
+            : (whence == SEEK_SET) ? 0
+                                   : my_data->size;
  if (offset > my_data->size) return (toff_t)-1;
  my_data->pos = offset;
  return offset;
@@ -119,7 +120,7 @@ static tsize_t MyRead(thandle_t opaque, void* dst, tsize_t size) {

 // Unmultiply Argb data. Taken from dsp/alpha_processing
 // (we don't want to force a dependency to a libdspdec library).
-#define MFIX 24    // 24bit fixed-point arithmetic
+#define MFIX 24  // 24bit fixed-point arithmetic
 #define HALF ((1u << MFIX) >> 1)

 static uint32_t Unmult(uint8_t x, uint32_t mult) {
@@ -127,9 +128,7 @@ static uint32_t Unmult(uint8_t x, uint32_t mult) {
  return (v > 255u) ? 255u : v;
 }

-static WEBP_INLINE uint32_t GetScale(uint32_t a) {
-  return (255u << MFIX) / a;
-}
+static WEBP_INLINE uint32_t GetScale(uint32_t a) { return (255u << MFIX) / a; }

 #undef MFIX
 #undef HALF
@@ -139,7 +138,7 @@ static void MultARGBRow(uint8_t* ptr, int width) {
  for (x = 0; x < width; ++x, ptr += 4) {
    const uint32_t alpha = ptr[3];
    if (alpha < 255) {
-      if (alpha == 0) {   // alpha == 0
+      if (alpha == 0) {  // alpha == 0
        ptr[0] = ptr[1] = ptr[2] = 0;
      } else {
        const uint32_t scale = GetScale(alpha);
@@ -152,9 +151,8 @@ static void MultARGBRow(uint8_t* ptr, int width) {
 }

 int ReadTIFF(const uint8_t* const data, size_t data_size,
-             WebPPicture* const pic, int keep_alpha,
-             Metadata* const metadata) {
-  MyData my_data = { data, (toff_t)data_size, 0 };
+             WebPPicture* const pic, int keep_alpha, Metadata* const metadata) {
+  MyData my_data = {data, (toff_t)data_size, 0};
  TIFF* tif;
  uint32_t image_width, image_height, tile_width, tile_height;
  uint64_t stride;
@@ -170,8 +168,7 @@ int ReadTIFF(const uint8_t* const data, size_t data_size,
    return 0;
  }

-  tif = TIFFClientOpen("Memory", "r", &my_data,
-                       MyRead, MyRead, MySeek, MyClose,
+  tif = TIFFClientOpen("Memory", "r", &my_data, MyRead, MyRead, MySeek, MyClose,
                       MySize, MyMapFile, MyUnmapFile);
  if (tif == NULL) {
    fprintf(stderr, "Error! Cannot parse TIFF file\n");
@@ -180,9 +177,10 @@ int ReadTIFF(const uint8_t* const data, size_t data_size,

  dircount = TIFFNumberOfDirectories(tif);
  if (dircount > 1) {
-    fprintf(stderr, "Warning: multi-directory TIFF files are not supported.\n"
-                    "Only the first will be used, %d will be ignored.\n",
-                    dircount - 1);
+    fprintf(stderr,
+            "Warning: multi-directory TIFF files are not supported.\n"
+            "Only the first will be used, %d will be ignored.\n",
+            dircount - 1);
  }
  if (!TIFFGetFieldDefaulted(tif, TIFFTAG_SAMPLESPERPIXEL, &samples_per_px)) {
    fprintf(stderr, "Error! Cannot retrieve TIFF samples-per-pixel info.\n");
@@ -252,9 +250,10 @@ int ReadTIFF(const uint8_t* const data, size_t data_size,
          tmp += stride;
        }
      }
-      ok = keep_alpha
-         ? WebPPictureImportRGBA(pic, (const uint8_t*)raster, (int)stride)
-         : WebPPictureImportRGBX(pic, (const uint8_t*)raster, (int)stride);
+      ok =
+          keep_alpha
+              ? WebPPictureImportRGBA(pic, (const uint8_t*)raster, (int)stride)
+              : WebPPictureImportRGBX(pic, (const uint8_t*)raster, (int)stride);
    }
    _TIFFfree(raster);
  } else {
@@ -271,11 +270,11 @@ int ReadTIFF(const uint8_t* const data, size_t data_size,
      }
    }
  }
- End:
+End:
  TIFFClose(tif);
  return ok;
 }
-#else  // !WEBP_HAVE_TIFF
+#else   // !WEBP_HAVE_TIFF
 int ReadTIFF(const uint8_t* const data, size_t data_size,
             struct WebPPicture* const pic, int keep_alpha,
             struct Metadata* const metadata) {
@@ -284,7 +283,8 @@ int ReadTIFF(const uint8_t* const data, size_t data_size,
  (void)pic;
  (void)keep_alpha;
  (void)metadata;
-  fprintf(stderr, "TIFF support not compiled. Please install the libtiff "
+  fprintf(stderr,
+          "TIFF support not compiled. Please install the libtiff "
          "development package before building.\n");
  return 0;
 }
--- a/imageio/tiffdec.h
+++ b/imageio/tiffdec.h
@@ -12,6 +12,8 @@
 #ifndef WEBP_IMAGEIO_TIFFDEC_H_
 #define WEBP_IMAGEIO_TIFFDEC_H_

+#include <stddef.h>
+
 #include "webp/types.h"

 #ifdef __cplusplus
@@ -31,7 +33,7 @@ int ReadTIFF(const uint8_t* const data, size_t data_size,
             struct Metadata* const metadata);

 #ifdef __cplusplus
-}    // extern "C"
+}  // extern "C"
 #endif

 #endif  // WEBP_IMAGEIO_TIFFDEC_H_
--- a/imageio/webpdec.c
+++ b/imageio/webpdec.c
@@ -13,26 +13,32 @@
 #include "webp/config.h"
 #endif

-#include "./webpdec.h"
-
 #include <assert.h>
 #include <stdio.h>
 #include <stdlib.h>

-#include "webp/decode.h"
-#include "webp/demux.h"
-#include "webp/encode.h"
 #include "../examples/unicode.h"
 #include "./imageio_util.h"
 #include "./metadata.h"
+#include "./webpdec.h"
+#include "webp/decode.h"
+#include "webp/demux.h"
+#include "webp/encode.h"
+#include "webp/mux_types.h"
+#include "webp/types.h"

 //------------------------------------------------------------------------------
 // WebP decoding

 static const char* const kStatusMessages[VP8_STATUS_NOT_ENOUGH_DATA + 1] = {
-  "OK", "OUT_OF_MEMORY", "INVALID_PARAM", "BITSTREAM_ERROR",
-  "UNSUPPORTED_FEATURE", "SUSPENDED", "USER_ABORT", "NOT_ENOUGH_DATA"
-};
+    "OK",
+    "OUT_OF_MEMORY",
+    "INVALID_PARAM",
+    "BITSTREAM_ERROR",
+    "UNSUPPORTED_FEATURE",
+    "SUSPENDED",
+    "USER_ABORT",
+    "NOT_ENOUGH_DATA"};

 static void PrintAnimationWarning(const WebPDecoderConfig* const config) {
  if (config->input.has_animation) {
@@ -52,8 +58,7 @@ void PrintWebPError(const char* const in_file, int status) {
  fprintf(stderr, "\n");
 }

-int LoadWebP(const char* const in_file,
-             const uint8_t** data, size_t* data_size,
+int LoadWebP(const char* const in_file, const uint8_t** data, size_t* data_size,
             WebPBitstreamFeatures* bitstream) {
  VP8StatusCode status;
  WebPBitstreamFeatures local_features;
@@ -83,9 +88,8 @@ VP8StatusCode DecodeWebP(const uint8_t* const data, size_t data_size,
  return WebPDecode(data, data_size, config);
 }

-VP8StatusCode DecodeWebPIncremental(
-    const uint8_t* const data, size_t data_size,
-    WebPDecoderConfig* const config) {
+VP8StatusCode DecodeWebPIncremental(const uint8_t* const data, size_t data_size,
+                                    WebPDecoderConfig* const config) {
  VP8StatusCode status = VP8_STATUS_OK;
  if (config == NULL) return VP8_STATUS_INVALID_PARAM;

@@ -110,7 +114,7 @@ VP8StatusCode DecodeWebPIncremental(

 static int ExtractMetadata(const uint8_t* const data, size_t data_size,
                           Metadata* const metadata) {
-  WebPData webp_data = { data, data_size };
+  WebPData webp_data = {data, data_size};
  WebPDemuxer* const demux = WebPDemux(&webp_data);
  WebPChunkIterator chunk_iter;
  uint32_t flags;
@@ -142,8 +146,7 @@ static int ExtractMetadata(const uint8_t* const data, size_t data_size,
 // -----------------------------------------------------------------------------

 int ReadWebP(const uint8_t* const data, size_t data_size,
-             WebPPicture* const pic,
-             int keep_alpha, Metadata* const metadata) {
+             WebPPicture* const pic, int keep_alpha, Metadata* const metadata) {
  int ok = 0;
  VP8StatusCode status = VP8_STATUS_OK;
  WebPDecoderConfig config;
@@ -193,7 +196,8 @@ int ReadWebP(const uint8_t* const data, size_t data_size,
 #endif
      output_buffer->u.RGBA.rgba = (uint8_t*)pic->argb;
      output_buffer->u.RGBA.stride = pic->argb_stride * sizeof(uint32_t);
-      output_buffer->u.RGBA.size = output_buffer->u.RGBA.stride * pic->height;
+      output_buffer->u.RGBA.size =
+          (size_t)output_buffer->u.RGBA.stride * pic->height;
    } else {
      output_buffer->colorspace = has_alpha ? MODE_YUVA : MODE_YUV;
      output_buffer->u.YUVA.y = pic->y;
@@ -204,10 +208,12 @@ int ReadWebP(const uint8_t* const data, size_t data_size,
      output_buffer->u.YUVA.u_stride = pic->uv_stride;
      output_buffer->u.YUVA.v_stride = pic->uv_stride;
      output_buffer->u.YUVA.a_stride = has_alpha ? pic->a_stride : 0;
-      output_buffer->u.YUVA.y_size = pic->height * pic->y_stride;
-      output_buffer->u.YUVA.u_size = (pic->height + 1) / 2 * pic->uv_stride;
-      output_buffer->u.YUVA.v_size = (pic->height + 1) / 2 * pic->uv_stride;
-      output_buffer->u.YUVA.a_size = pic->height * pic->a_stride;
+      output_buffer->u.YUVA.y_size = (size_t)pic->height * pic->y_stride;
+      output_buffer->u.YUVA.u_size =
+          (size_t)(pic->height + 1) / 2 * pic->uv_stride;
+      output_buffer->u.YUVA.v_size =
+          (size_t)(pic->height + 1) / 2 * pic->uv_stride;
+      output_buffer->u.YUVA.a_size = (size_t)pic->height * pic->a_stride;
    }
    output_buffer->is_external_memory = 1;

@@ -222,7 +228,7 @@ int ReadWebP(const uint8_t* const data, size_t data_size,
        argb += pic->argb_stride;
      }
    }
-  } while (0);   // <- so we can 'break' out of the loop
+  } while (0);  // <- so we can 'break' out of the loop

  if (status != VP8_STATUS_OK) {
    PrintWebPError("input data", status);
--- a/imageio/webpdec.h
+++ b/imageio/webpdec.h
@@ -12,7 +12,10 @@
 #ifndef WEBP_IMAGEIO_WEBPDEC_H_
 #define WEBP_IMAGEIO_WEBPDEC_H_

+#include <stddef.h>
+
 #include "webp/decode.h"
+#include "webp/types.h"

 #ifdef __cplusplus
 extern "C" {
@@ -32,8 +35,7 @@ void PrintWebPError(const char* const in_file, int status);
 // Reads a WebP from 'in_file', returning the contents and size in 'data' and
 // 'data_size'. If not NULL, 'bitstream' is populated using WebPGetFeatures().
 // Returns true on success.
-int LoadWebP(const char* const in_file,
-             const uint8_t** data, size_t* data_size,
+int LoadWebP(const char* const in_file, const uint8_t** data, size_t* data_size,
             WebPBitstreamFeatures* bitstream);

 // Decodes the WebP contained in 'data'.
@@ -45,9 +47,8 @@ VP8StatusCode DecodeWebP(const uint8_t* const data, size_t data_size,
                         WebPDecoderConfig* const config);

 // Same as DecodeWebP(), but using the incremental decoder.
-VP8StatusCode DecodeWebPIncremental(
-    const uint8_t* const data, size_t data_size,
-    WebPDecoderConfig* const config);
+VP8StatusCode DecodeWebPIncremental(const uint8_t* const data, size_t data_size,
+                                    WebPDecoderConfig* const config);

 //------------------------------------------------------------------------------

@@ -57,11 +58,11 @@ VP8StatusCode DecodeWebPIncremental(
 // or YUVA. Otherwise, alpha channel is dropped and output is RGB or YUV.
 // Returns true on success.
 int ReadWebP(const uint8_t* const data, size_t data_size,
-             struct WebPPicture* const pic,
-             int keep_alpha, struct Metadata* const metadata);
+             struct WebPPicture* const pic, int keep_alpha,
+             struct Metadata* const metadata);

 #ifdef __cplusplus
-}    // extern "C"
+}  // extern "C"
 #endif

 #endif  // WEBP_IMAGEIO_WEBPDEC_H_
--- a/imageio/wicdec.c
+++ b/imageio/wicdec.c
@@ -25,31 +25,31 @@
 #endif
 #define CINTERFACE
 #define COBJMACROS
-#define _WIN32_IE 0x500  // Workaround bug in shlwapi.h when compiling C++
-                         // code with COBJMACROS.
+#define _WIN32_IE \
+  0x500            // Workaround bug in shlwapi.h when compiling C++
+                   // code with COBJMACROS.
 #include <ole2.h>  // CreateStreamOnHGlobal()
 #include <shlwapi.h>
 #include <tchar.h>
-#include <windows.h>
 #include <wincodec.h>
+#include <windows.h>

 #include "../examples/unicode.h"
 #include "./imageio_util.h"
 #include "./metadata.h"
 #include "webp/encode.h"

-#define IFS(fn)                                                     \
-  do {                                                              \
-    if (SUCCEEDED(hr)) {                                            \
-      hr = (fn);                                                    \
-      if (FAILED(hr)) fprintf(stderr, #fn " failed %08lx\n", hr);   \
-    }                                                               \
+#define IFS(fn)                                                   \
+  do {                                                            \
+    if (SUCCEEDED(hr)) {                                          \
+      hr = (fn);                                                  \
+      if (FAILED(hr)) fprintf(stderr, #fn " failed %08lx\n", hr); \
+    }                                                             \
  } while (0)

 // modified version of DEFINE_GUID from guiddef.h.
 #define WEBP_DEFINE_GUID(name, l, w1, w2, b1, b2, b3, b4, b5, b6, b7, b8) \
-  static const GUID name = \
-      { l, w1, w2, { b1, b2,  b3,  b4,  b5,  b6,  b7,  b8 } }
+  static const GUID name = {l, w1, w2, {b1, b2, b3, b4, b5, b6, b7, b8}}

 #ifdef __cplusplus
 #define MAKE_REFGUID(x) (x)
@@ -66,23 +66,17 @@ typedef struct WICFormatImporter {
 // From Microsoft SDK 7.0a -- wincodec.h
 // Create local copies for compatibility when building against earlier
 // versions of the SDK.
-WEBP_DEFINE_GUID(GUID_WICPixelFormat24bppBGR_,
-                 0x6fddc324, 0x4e03, 0x4bfe,
-                 0xb1, 0x85, 0x3d, 0x77, 0x76, 0x8d, 0xc9, 0x0c);
-WEBP_DEFINE_GUID(GUID_WICPixelFormat24bppRGB_,
-                 0x6fddc324, 0x4e03, 0x4bfe,
-                 0xb1, 0x85, 0x3d, 0x77, 0x76, 0x8d, 0xc9, 0x0d);
-WEBP_DEFINE_GUID(GUID_WICPixelFormat32bppBGRA_,
-                 0x6fddc324, 0x4e03, 0x4bfe,
+WEBP_DEFINE_GUID(GUID_WICPixelFormat24bppBGR_, 0x6fddc324, 0x4e03, 0x4bfe, 0xb1,
+                 0x85, 0x3d, 0x77, 0x76, 0x8d, 0xc9, 0x0c);
+WEBP_DEFINE_GUID(GUID_WICPixelFormat24bppRGB_, 0x6fddc324, 0x4e03, 0x4bfe, 0xb1,
+                 0x85, 0x3d, 0x77, 0x76, 0x8d, 0xc9, 0x0d);
+WEBP_DEFINE_GUID(GUID_WICPixelFormat32bppBGRA_, 0x6fddc324, 0x4e03, 0x4bfe,
                 0xb1, 0x85, 0x3d, 0x77, 0x76, 0x8d, 0xc9, 0x0f);
-WEBP_DEFINE_GUID(GUID_WICPixelFormat32bppRGBA_,
-                 0xf5c7ad2d, 0x6a8d, 0x43dd,
+WEBP_DEFINE_GUID(GUID_WICPixelFormat32bppRGBA_, 0xf5c7ad2d, 0x6a8d, 0x43dd,
                 0xa7, 0xa8, 0xa2, 0x99, 0x35, 0x26, 0x1a, 0xe9);
-WEBP_DEFINE_GUID(GUID_WICPixelFormat64bppBGRA_,
-                 0x1562ff7c, 0xd352, 0x46f9,
+WEBP_DEFINE_GUID(GUID_WICPixelFormat64bppBGRA_, 0x1562ff7c, 0xd352, 0x46f9,
                 0x97, 0x9e, 0x42, 0x97, 0x6b, 0x79, 0x22, 0x46);
-WEBP_DEFINE_GUID(GUID_WICPixelFormat64bppRGBA_,
-                 0x6fddc324, 0x4e03, 0x4bfe,
+WEBP_DEFINE_GUID(GUID_WICPixelFormat64bppRGBA_, 0x6fddc324, 0x4e03, 0x4bfe,
                 0xb1, 0x85, 0x3d, 0x77, 0x76, 0x8d, 0xc9, 0x16);

 static HRESULT OpenInputStream(const char* filename, IStream** stream) {
@@ -147,8 +141,7 @@ static HRESULT ExtractICCP(IWICImagingFactory* const factory,

  if (SUCCEEDED(hr)) {
    UINT num_color_contexts;
-    IFS(IWICBitmapFrameDecode_GetColorContexts(frame,
-                                               count, color_contexts,
+    IFS(IWICBitmapFrameDecode_GetColorContexts(frame, count, color_contexts,
                                               &num_color_contexts));
    assert(FAILED(hr) || num_color_contexts <= count);
    for (i = 0; SUCCEEDED(hr) && i < num_color_contexts; ++i) {
@@ -156,8 +149,8 @@ static HRESULT ExtractICCP(IWICImagingFactory* const factory,
      IFS(IWICColorContext_GetType(color_contexts[i], &type));
      if (SUCCEEDED(hr) && type == WICColorContextProfile) {
        UINT size;
-        IFS(IWICColorContext_GetProfileBytes(color_contexts[i],
-                                             0, NULL, &size));
+        IFS(IWICColorContext_GetProfileBytes(color_contexts[i], 0, NULL,
+                                             &size));
        if (SUCCEEDED(hr) && size > 0) {
          iccp->bytes = (uint8_t*)malloc(size);
          if (iccp->bytes == NULL) {
@@ -165,9 +158,8 @@ static HRESULT ExtractICCP(IWICImagingFactory* const factory,
            break;
          }
          iccp->size = size;
-          IFS(IWICColorContext_GetProfileBytes(color_contexts[i],
-                                               (UINT)iccp->size, iccp->bytes,
-                                               &size));
+          IFS(IWICColorContext_GetProfileBytes(
+              color_contexts[i], (UINT)iccp->size, iccp->bytes, &size));
          if (SUCCEEDED(hr) && size != iccp->size) {
            fprintf(stderr, "Warning! ICC profile size (%u) != expected (%u)\n",
                    size, (uint32_t)iccp->size);
@@ -209,8 +201,7 @@ static int HasPalette(GUID pixel_format) {

 static int HasAlpha(IWICImagingFactory* const factory,
                    IWICBitmapDecoder* const decoder,
-                    IWICBitmapFrameDecode* const frame,
-                    GUID pixel_format) {
+                    IWICBitmapFrameDecode* const frame, GUID pixel_format) {
  int has_alpha;
  if (HasPalette(pixel_format)) {
    IWICPalette* frame_palette = NULL;
@@ -245,21 +236,20 @@ static int HasAlpha(IWICImagingFactory* const factory,
  return has_alpha;
 }

-int ReadPictureWithWIC(const char* const filename,
-                       WebPPicture* const pic, int keep_alpha,
-                       Metadata* const metadata) {
+int ReadPictureWithWIC(const char* const filename, WebPPicture* const pic,
+                       int keep_alpha, Metadata* const metadata) {
  // From Microsoft SDK 6.0a -- ks.h
  // Define a local copy to avoid link errors under mingw.
  WEBP_DEFINE_GUID(GUID_NULL_, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
  static const WICFormatImporter kAlphaFormatImporters[] = {
-    { &GUID_WICPixelFormat32bppBGRA_, 4, WebPPictureImportBGRA },
-    { &GUID_WICPixelFormat32bppRGBA_, 4, WebPPictureImportRGBA },
-    { NULL, 0, NULL },
+      {&GUID_WICPixelFormat32bppBGRA_, 4, WebPPictureImportBGRA},
+      {&GUID_WICPixelFormat32bppRGBA_, 4, WebPPictureImportRGBA},
+      {NULL, 0, NULL},
  };
  static const WICFormatImporter kNonAlphaFormatImporters[] = {
-    { &GUID_WICPixelFormat24bppBGR_, 3, WebPPictureImportBGR },
-    { &GUID_WICPixelFormat24bppRGB_, 3, WebPPictureImportRGB },
-    { NULL, 0, NULL },
+      {&GUID_WICPixelFormat24bppBGR_, 3, WebPPictureImportBGR},
+      {&GUID_WICPixelFormat24bppRGB_, 3, WebPPictureImportRGB},
+      {NULL, 0, NULL},
  };
  HRESULT hr = S_OK;
  IWICBitmapFrameDecode* frame = NULL;
@@ -274,26 +264,20 @@ int ReadPictureWithWIC(const char* const filename,
  const WICFormatImporter* importer = NULL;
  GUID src_container_format = GUID_NULL_;
  // From Windows Kits\10\Include\10.0.19041.0\um\wincodec.h
-  WEBP_DEFINE_GUID(GUID_ContainerFormatWebp_,
-                   0xe094b0e2, 0x67f2, 0x45b3,
-                   0xb0, 0xea, 0x11, 0x53, 0x37, 0xca, 0x7c, 0xf3);
+  WEBP_DEFINE_GUID(GUID_ContainerFormatWebp_, 0xe094b0e2, 0x67f2, 0x45b3, 0xb0,
+                   0xea, 0x11, 0x53, 0x37, 0xca, 0x7c, 0xf3);
  static const GUID* kAlphaContainers[] = {
-    &GUID_ContainerFormatBmp,
-    &GUID_ContainerFormatPng,
-    &GUID_ContainerFormatTiff,
-    &GUID_ContainerFormatWebp_,
-    NULL
-  };
+      &GUID_ContainerFormatBmp, &GUID_ContainerFormatPng,
+      &GUID_ContainerFormatTiff, &GUID_ContainerFormatWebp_, NULL};
  int has_alpha = 0;
  int64_t stride;

  if (filename == NULL || pic == NULL) return 0;

  IFS(CoInitialize(NULL));
-  IFS(CoCreateInstance(MAKE_REFGUID(CLSID_WICImagingFactory), NULL,
-                       CLSCTX_INPROC_SERVER,
-                       MAKE_REFGUID(IID_IWICImagingFactory),
-                       (LPVOID*)&factory));
+  IFS(CoCreateInstance(
+      MAKE_REFGUID(CLSID_WICImagingFactory), NULL, CLSCTX_INPROC_SERVER,
+      MAKE_REFGUID(IID_IWICImagingFactory), (LPVOID*)&factory));
  if (hr == REGDB_E_CLASSNOTREG) {
    fprintf(stderr,
            "Couldn't access Windows Imaging Component (are you running "
@@ -303,8 +287,7 @@ int ReadPictureWithWIC(const char* const filename,
  // Prepare for image decoding.
  IFS(OpenInputStream(filename, &stream));
  IFS(IWICImagingFactory_CreateDecoderFromStream(
-          factory, stream, NULL,
-          WICDecodeMetadataCacheOnDemand, &decoder));
+      factory, stream, NULL, WICDecodeMetadataCacheOnDemand, &decoder));
  IFS(IWICBitmapDecoder_GetFrameCount(decoder, &frame_count));
  if (SUCCEEDED(hr)) {
    if (frame_count == 0) {
@@ -338,18 +321,15 @@ int ReadPictureWithWIC(const char* const filename,
       hr == S_OK && importer->import != NULL; ++importer) {
    BOOL can_convert;
    const HRESULT cchr = IWICFormatConverter_CanConvert(
-        converter,
-        MAKE_REFGUID(src_pixel_format),
-        MAKE_REFGUID(*importer->pixel_format),
-        &can_convert);
+        converter, MAKE_REFGUID(src_pixel_format),
+        MAKE_REFGUID(*importer->pixel_format), &can_convert);
    if (SUCCEEDED(cchr) && can_convert) break;
  }
  if (importer->import == NULL) hr = E_FAIL;

-  IFS(IWICFormatConverter_Initialize(converter, (IWICBitmapSource*)frame,
-                                     importer->pixel_format,
-                                     WICBitmapDitherTypeNone,
-                                     NULL, 0.0, WICBitmapPaletteTypeCustom));
+  IFS(IWICFormatConverter_Initialize(
+      converter, (IWICBitmapSource*)frame, importer->pixel_format,
+      WICBitmapDitherTypeNone, NULL, 0.0, WICBitmapPaletteTypeCustom));

  // Decode.
  IFS(IWICFormatConverter_GetSize(converter, &width, &height));
@@ -361,18 +341,17 @@ int ReadPictureWithWIC(const char* const filename,

  if (SUCCEEDED(hr)) {
    rgb = (BYTE*)malloc((size_t)stride * height);
-    if (rgb == NULL)
-      hr = E_OUTOFMEMORY;
+    if (rgb == NULL) hr = E_OUTOFMEMORY;
  }
-  IFS(IWICFormatConverter_CopyPixels(converter, NULL,
-                                     (UINT)stride, (UINT)stride * height, rgb));
+  IFS(IWICFormatConverter_CopyPixels(converter, NULL, (UINT)stride,
+                                     (UINT)stride * height, rgb));

  // WebP conversion.
  if (SUCCEEDED(hr)) {
    int ok;
    pic->width = width;
    pic->height = height;
-    pic->use_argb = 1;    // For WIC, we always force to argb
+    pic->use_argb = 1;  // For WIC, we always force to argb
    ok = importer->import(pic, rgb, (int)stride);
    if (!ok) hr = E_FAIL;
  }
@@ -394,7 +373,7 @@ int ReadPictureWithWIC(const char* const filename,
  free(rgb);
  return SUCCEEDED(hr);
 }
-#else  // !HAVE_WINCODEC_H
+#else   // !HAVE_WINCODEC_H
 int ReadPictureWithWIC(const char* const filename,
                       struct WebPPicture* const pic, int keep_alpha,
                       struct Metadata* const metadata) {
@@ -402,10 +381,11 @@ int ReadPictureWithWIC(const char* const filename,
  (void)pic;
  (void)keep_alpha;
  (void)metadata;
-  fprintf(stderr, "Windows Imaging Component (WIC) support not compiled. "
-                  "Visual Studio and mingw-w64 builds support WIC. Make sure "
-                  "wincodec.h detection is working correctly if using autoconf "
-                  "and HAVE_WINCODEC_H is defined before building.\n");
+  fprintf(stderr,
+          "Windows Imaging Component (WIC) support not compiled. "
+          "Visual Studio and mingw-w64 builds support WIC. Make sure "
+          "wincodec.h detection is working correctly if using autoconf "
+          "and HAVE_WINCODEC_H is defined before building.\n");
  return 0;
 }
 #endif  // HAVE_WINCODEC_H
--- a/imageio/wicdec.h
+++ b/imageio/wicdec.h
@@ -28,7 +28,7 @@ int ReadPictureWithWIC(const char* const filename,
                       struct Metadata* const metadata);

 #ifdef __cplusplus
-}    // extern "C"
+}  // extern "C"
 #endif

 #endif  // WEBP_IMAGEIO_WICDEC_H_
--- a/iosbuild.sh
+++ b/iosbuild.sh
@@ -31,8 +31,8 @@ readonly OLDPATH=${PATH}

 # Add iPhoneOS-V6 to the list of platforms below if you need armv6 support.
 # Note that iPhoneOS-V6 support is not available with the iOS6 SDK.
-PLATFORMS="iPhoneSimulator iPhoneSimulator64"
-PLATFORMS+=" iPhoneOS-V7 iPhoneOS-V7s iPhoneOS-V7-arm64"
+PLATFORMS="iPhoneSimulator64"
+PLATFORMS+=" iPhoneOS-arm64"
 readonly PLATFORMS
 readonly SRCDIR=$(dirname $0)
 readonly TOPDIR=$(pwd)
@@ -53,7 +53,7 @@ DEMUXLIBLIST=''
 if [[ -z "${SDK}" ]]; then
  echo "iOS SDK not available"
  exit 1
-elif [[ ${SDK%%.*} -gt 8 ]]; then
+elif [[ ${SDK%%.*} -gt 8 && "${XCODE%%.*}" -lt 16 ]]; then
  EXTRA_CFLAGS="-fembed-bitcode"
 elif [[ ${SDK%%.*} -le 6 ]]; then
  echo "You need iOS SDK version 6.0 or above"
@@ -98,7 +98,7 @@ fi

 for PLATFORM in ${PLATFORMS}; do
  ARCH2=""
-  if [[ "${PLATFORM}" == "iPhoneOS-V7-arm64" ]]; then
+  if [[ "${PLATFORM}" == "iPhoneOS-arm64" ]]; then
    PLATFORM="iPhoneOS"
    ARCH="aarch64"
    ARCH2="arm64"
--- a/man/cwebp.1
+++ b/man/cwebp.1
@@ -1,5 +1,5 @@
 .\"                                      Hey, EMACS: -*- nroff -*-
-.TH CWEBP 1 "July 18, 2024"
+.TH CWEBP 1 "April 10, 2025"
 .SH NAME
 cwebp \- compress an image file to a WebP file
 .SH SYNOPSIS
@@ -102,6 +102,14 @@ If either (but not both) of the \fBwidth\fP or \fBheight\fP parameters is 0,
 the value will be calculated preserving the aspect\-ratio. Note: scaling
 is applied \fIafter\fP cropping.
 .TP
+.BI \-resize_mode " string
+Specify the behavior of the \fB\-resize\fP option. Possible values are:
+\fBdown_only\fP, \fBup_only\fP, \fBalways\fP (default). \fBdown_only\fP will
+use the values specified by \fB\-resize\fP if \fIeither\fP the input width or
+height are larger than the given dimensions. Similarly, \fBup_only\fP will only
+resize if \fIeither\fP the input width or height are smaller than the given
+dimensions.
+.TP
 .B \-mt
 Use multi\-threading for encoding, if possible.
 .TP
@@ -180,8 +188,8 @@ Disable strong filtering (if filtering is being used thanks to the
 \fB\-f\fP option) and use simple filtering instead.
 .TP
 .B \-sharp_yuv
-Use more accurate and sharper RGB->YUV conversion if needed. Note that this
-process is slower than the default 'fast' RGB->YUV conversion.
+Use more accurate and sharper RGB->YUV conversion. Note that this process is
+slower than the default 'fast' RGB->YUV conversion.
 .TP
 .BI \-sns " int
 Specify the amplitude of the spatial noise shaping. Spatial noise shaping
--- a/man/gif2webp.1
+++ b/man/gif2webp.1
@@ -1,5 +1,5 @@
 .\"                                      Hey, EMACS: -*- nroff -*-
-.TH GIF2WEBP 1 "July 18, 2024"
+.TH GIF2WEBP 1 "November 4, 2024"
 .SH NAME
 gif2webp \- Convert a GIF image to WebP
 .SH SYNOPSIS
@@ -39,6 +39,18 @@ Encode the image using lossy compression.
 Mixed compression mode: optimize compression of the image by picking either
 lossy or lossless compression for each frame heuristically.
 .TP
+.BI \-near_lossless " int
+Specify the level of near\-lossless image preprocessing. This option adjusts
+pixel values to help compressibility, but has minimal impact on the visual
+quality. It triggers lossless compression mode automatically. The range is 0
+(maximum preprocessing) to 100 (no preprocessing, the default). The typical
+value is around 60. Note that lossy with \fB\-q 100\fP can at times yield
+better results.
+.TP
+.B \-sharp_yuv
+Use more accurate and sharper RGB->YUV conversion. Note that this process is
+slower than the default 'fast' RGB->YUV conversion.
+.TP
 .BI \-q " float
 Specify the compression factor for RGB channels between 0 and 100. The default
 is 75.
--- a/man/img2webp.1
+++ b/man/img2webp.1
@@ -1,5 +1,5 @@
 .\"                                      Hey, EMACS: -*- nroff -*-
-.TH IMG2WEBP 1 "July 18, 2024"
+.TH IMG2WEBP 1 "November 26, 2024"
 .SH NAME
 img2webp \- create animated WebP file from a sequence of input images.
 .SH SYNOPSIS
@@ -53,8 +53,8 @@ value is around 60. Note that lossy with \fB\-q 100\fP can at times yield
 better results.
 .TP
 .B \-sharp_yuv
-Use more accurate and sharper RGB->YUV conversion if needed. Note that this
-process is slower than the default 'fast' RGB->YUV conversion.
+Use more accurate and sharper RGB->YUV conversion. Note that this process is
+slower than the default 'fast' RGB->YUV conversion.
 .TP
 .BI \-loop " int
 Specifies the number of times the animation should loop. Using '0'
@@ -88,6 +88,15 @@ Specify the compression factor between 0 and 100. The default is 75.
 Specify the compression method to use. This parameter controls the
 trade off between encoding speed and the compressed file size and quality.
 Possible values range from 0 to 6. Default value is 4.
+When higher values are used, the encoder will spend more time inspecting
+additional encoding possibilities and decide on the quality gain.
+Lower value can result in faster processing time at the expense of
+larger file size and lower compression quality.
+.TP
+.B \-exact, \-noexact
+Preserve or alter RGB values in transparent area. The default is
+\fB-noexact\fP, to help compressibility. Note \fB\-noexact\fP may cause
+artifacts in frames compressed with \fB\-lossy\fP.

 .SH EXIT STATUS
 If there were no problems during execution, \fBimg2webp\fP exits with the value
--- a/sharpyuv/Makefile.am
+++ b/sharpyuv/Makefile.am
@@ -33,7 +33,7 @@ libsharpyuv_la_SOURCES += sharpyuv_gamma.c sharpyuv_gamma.h
 libsharpyuv_la_SOURCES += sharpyuv.c sharpyuv.h

 libsharpyuv_la_CPPFLAGS = $(AM_CPPFLAGS)
-libsharpyuv_la_LDFLAGS = -no-undefined -version-info 1:0:1 -lm
+libsharpyuv_la_LDFLAGS = -no-undefined -version-info 1:2:1 -lm
 libsharpyuv_la_LIBADD =
 libsharpyuv_la_LIBADD += libsharpyuv_sse2.la
 libsharpyuv_la_LIBADD += libsharpyuv_neon.la
--- a/sharpyuv/libsharpyuv.rc
+++ b/sharpyuv/libsharpyuv.rc
@@ -6,8 +6,8 @@
 LANGUAGE LANG_ENGLISH, SUBLANG_ENGLISH_US

 VS_VERSION_INFO VERSIONINFO
- FILEVERSION 0,0,4,0
- PRODUCTVERSION 0,0,4,0
+ FILEVERSION 0,0,4,2
+ PRODUCTVERSION 0,0,4,2
 FILEFLAGSMASK 0x3fL
 #ifdef _DEBUG
 FILEFLAGS 0x1L
@@ -24,12 +24,12 @@ BEGIN
        BEGIN
            VALUE "CompanyName", "Google, Inc."
            VALUE "FileDescription", "libsharpyuv DLL"
-            VALUE "FileVersion", "0.4.0"
+            VALUE "FileVersion", "0.4.2"
            VALUE "InternalName", "libsharpyuv.dll"
-            VALUE "LegalCopyright", "Copyright (C) 2024"
+            VALUE "LegalCopyright", "Copyright (C) 2025"
            VALUE "OriginalFilename", "libsharpyuv.dll"
            VALUE "ProductName", "SharpYuv Library"
-            VALUE "ProductVersion", "0.4.0"
+            VALUE "ProductVersion", "0.4.2"
        END
    END
    BLOCK "VarFileInfo"
--- a/sharpyuv/sharpyuv.c
+++ b/sharpyuv/sharpyuv.c
@@ -19,16 +19,14 @@
 #include <stdlib.h>
 #include <string.h>

-#include "src/webp/types.h"
 #include "sharpyuv/sharpyuv_cpu.h"
 #include "sharpyuv/sharpyuv_dsp.h"
 #include "sharpyuv/sharpyuv_gamma.h"
+#include "src/webp/types.h"

 //------------------------------------------------------------------------------

-int SharpYuvGetVersion(void) {
-  return SHARPYUV_VERSION;
-}
+int SharpYuvGetVersion(void) { return SHARPYUV_VERSION; }

 //------------------------------------------------------------------------------
 // Sharp RGB->YUV conversion
@@ -49,8 +47,8 @@ static int GetPrecisionShift(int rgb_bit_depth) {
                                               : (kMaxBitDepth - rgb_bit_depth);
 }

-typedef int16_t fixed_t;      // signed type with extra precision for UV
-typedef uint16_t fixed_y_t;   // unsigned type with extra precision for W
+typedef int16_t fixed_t;     // signed type with extra precision for UV
+typedef uint16_t fixed_y_t;  // unsigned type with extra precision for W

 //------------------------------------------------------------------------------

@@ -75,9 +73,8 @@ static int RGBToGray(int64_t r, int64_t g, int64_t b) {
 }

 static uint32_t ScaleDown(uint16_t a, uint16_t b, uint16_t c, uint16_t d,
-                          int rgb_bit_depth,
+                          int bit_depth,
                          SharpYuvTransferFunctionType transfer_type) {
-  const int bit_depth = rgb_bit_depth + GetPrecisionShift(rgb_bit_depth);
  const uint32_t A = SharpYuvGammaToLinear(a, bit_depth, transfer_type);
  const uint32_t B = SharpYuvGammaToLinear(b, bit_depth, transfer_type);
  const uint32_t C = SharpYuvGammaToLinear(c, bit_depth, transfer_type);
@@ -87,9 +84,8 @@ static uint32_t ScaleDown(uint16_t a, uint16_t b, uint16_t c, uint16_t d,
 }

 static WEBP_INLINE void UpdateW(const fixed_y_t* src, fixed_y_t* dst, int w,
-                                int rgb_bit_depth,
+                                int bit_depth,
                                SharpYuvTransferFunctionType transfer_type) {
-  const int bit_depth = rgb_bit_depth + GetPrecisionShift(rgb_bit_depth);
  int i = 0;
  do {
    const uint32_t R =
@@ -104,24 +100,24 @@ static WEBP_INLINE void UpdateW(const fixed_y_t* src, fixed_y_t* dst, int w,
 }

 static void UpdateChroma(const fixed_y_t* src1, const fixed_y_t* src2,
-                         fixed_t* dst, int uv_w, int rgb_bit_depth,
+                         fixed_t* dst, int uv_w, int bit_depth,
                         SharpYuvTransferFunctionType transfer_type) {
  int i = 0;
  do {
    const int r =
        ScaleDown(src1[0 * uv_w + 0], src1[0 * uv_w + 1], src2[0 * uv_w + 0],
-                  src2[0 * uv_w + 1], rgb_bit_depth, transfer_type);
+                  src2[0 * uv_w + 1], bit_depth, transfer_type);
    const int g =
        ScaleDown(src1[2 * uv_w + 0], src1[2 * uv_w + 1], src2[2 * uv_w + 0],
-                  src2[2 * uv_w + 1], rgb_bit_depth, transfer_type);
+                  src2[2 * uv_w + 1], bit_depth, transfer_type);
    const int b =
        ScaleDown(src1[4 * uv_w + 0], src1[4 * uv_w + 1], src2[4 * uv_w + 0],
-                  src2[4 * uv_w + 1], rgb_bit_depth, transfer_type);
+                  src2[4 * uv_w + 1], bit_depth, transfer_type);
    const int W = RGBToGray(r, g, b);
    dst[0 * uv_w] = (fixed_t)(r - W);
    dst[1 * uv_w] = (fixed_t)(g - W);
    dst[2 * uv_w] = (fixed_t)(b - W);
-    dst  += 1;
+    dst += 1;
    src1 += 2;
    src2 += 2;
  } while (++i < uv_w);
@@ -148,12 +144,9 @@ static WEBP_INLINE int Shift(int v, int shift) {
  return (shift >= 0) ? (v << shift) : (v >> -shift);
 }

-static void ImportOneRow(const uint8_t* const r_ptr,
-                         const uint8_t* const g_ptr,
-                         const uint8_t* const b_ptr,
-                         int rgb_step,
-                         int rgb_bit_depth,
-                         int pic_width,
+static void ImportOneRow(const uint8_t* const r_ptr, const uint8_t* const g_ptr,
+                         const uint8_t* const b_ptr, int rgb_step,
+                         int rgb_bit_depth, int pic_width,
                         fixed_y_t* const dst) {
  // Convert the rgb_step from a number of bytes to a number of uint8_t or
  // uint16_t values depending the bit depth.
@@ -181,18 +174,13 @@ static void ImportOneRow(const uint8_t* const r_ptr,
 }

 static void InterpolateTwoRows(const fixed_y_t* const best_y,
-                               const fixed_t* prev_uv,
-                               const fixed_t* cur_uv,
-                               const fixed_t* next_uv,
-                               int w,
-                               fixed_y_t* out1,
-                               fixed_y_t* out2,
-                               int rgb_bit_depth) {
+                               const fixed_t* prev_uv, const fixed_t* cur_uv,
+                               const fixed_t* next_uv, int w, fixed_y_t* out1,
+                               fixed_y_t* out2, int bit_depth) {
  const int uv_w = w >> 1;
-  const int len = (w - 1) >> 1;   // length to filter
+  const int len = (w - 1) >> 1;  // length to filter
  int k = 3;
-  const int bit_depth = rgb_bit_depth + GetPrecisionShift(rgb_bit_depth);
-  while (k-- > 0) {   // process each R/G/B segments in turn
+  while (k-- > 0) {  // process each R/G/B segments in turn
    // special boundary case for i==0
    out1[0] = Filter2(cur_uv[0], prev_uv[0], best_y[0], bit_depth);
    out2[0] = Filter2(cur_uv[0], next_uv[0], best_y[w], bit_depth);
@@ -212,7 +200,7 @@ static void InterpolateTwoRows(const fixed_y_t* const best_y,
    out1 += w;
    out2 += w;
    prev_uv += uv_w;
-    cur_uv  += uv_w;
+    cur_uv += uv_w;
    next_uv += uv_w;
  }
 }
@@ -220,16 +208,16 @@ static void InterpolateTwoRows(const fixed_y_t* const best_y,
 static WEBP_INLINE int RGBToYUVComponent(int r, int g, int b,
                                         const int coeffs[4], int sfix) {
  const int srounder = 1 << (YUV_FIX + sfix - 1);
-  const int luma = coeffs[0] * r + coeffs[1] * g + coeffs[2] * b +
-                   coeffs[3] + srounder;
+  const int luma =
+      coeffs[0] * r + coeffs[1] * g + coeffs[2] * b + coeffs[3] + srounder;
  return (luma >> (YUV_FIX + sfix));
 }

 static int ConvertWRGBToYUV(const fixed_y_t* best_y, const fixed_t* best_uv,
                            uint8_t* y_ptr, int y_stride, uint8_t* u_ptr,
                            int u_stride, uint8_t* v_ptr, int v_stride,
-                            int rgb_bit_depth,
-                            int yuv_bit_depth, int width, int height,
+                            int rgb_bit_depth, int yuv_bit_depth, int width,
+                            int height,
                            const SharpYuvConversionMatrix* yuv_matrix) {
  int i, j;
  const fixed_t* const best_uv_base = best_uv;
@@ -298,8 +286,6 @@ static void* SafeMalloc(uint64_t nmemb, size_t size) {
  return malloc((size_t)total_size);
 }

-#define SAFE_ALLOC(W, H, T) ((T*)SafeMalloc((uint64_t)(W) * (H), sizeof(T)))
-
 static int DoSharpArgbToYuv(const uint8_t* r_ptr, const uint8_t* g_ptr,
                            const uint8_t* b_ptr, int rgb_step, int rgb_stride,
                            int rgb_bit_depth, uint8_t* y_ptr, int y_stride,
@@ -317,31 +303,42 @@ static int DoSharpArgbToYuv(const uint8_t* r_ptr, const uint8_t* g_ptr,
  uint64_t prev_diff_y_sum = ~0;
  int j, iter;

-  // TODO(skal): allocate one big memory chunk. But for now, it's easier
-  // for valgrind debugging to have several chunks.
-  fixed_y_t* const tmp_buffer = SAFE_ALLOC(w * 3, 2, fixed_y_t);   // scratch
-  fixed_y_t* const best_y_base = SAFE_ALLOC(w, h, fixed_y_t);
-  fixed_y_t* const target_y_base = SAFE_ALLOC(w, h, fixed_y_t);
-  fixed_y_t* const best_rgb_y = SAFE_ALLOC(w, 2, fixed_y_t);
-  fixed_t* const best_uv_base = SAFE_ALLOC(uv_w * 3, uv_h, fixed_t);
-  fixed_t* const target_uv_base = SAFE_ALLOC(uv_w * 3, uv_h, fixed_t);
-  fixed_t* const best_rgb_uv = SAFE_ALLOC(uv_w * 3, 1, fixed_t);
-  fixed_y_t* best_y = best_y_base;
-  fixed_y_t* target_y = target_y_base;
-  fixed_t* best_uv = best_uv_base;
-  fixed_t* target_uv = target_uv_base;
+  const uint64_t tmp_buffer_size = (uint64_t)w * 3 * 2;
+  const uint64_t best_y_base_size = (uint64_t)w * h;
+  const uint64_t target_y_base_size = (uint64_t)w * h;
+  const uint64_t best_rgb_y_size = (uint64_t)w * 2;
+  const uint64_t best_uv_base_size = (uint64_t)uv_w * 3 * uv_h;
+  const uint64_t target_uv_base_size = (uint64_t)uv_w * 3 * uv_h;
+  const uint64_t best_rgb_uv_size = (uint64_t)uv_w * 3;
+  fixed_y_t* const tmp_buffer = (fixed_y_t*)SafeMalloc(
+      (tmp_buffer_size + best_y_base_size + target_y_base_size +
+       best_rgb_y_size) +
+          (best_uv_base_size + target_uv_base_size + best_rgb_uv_size),
+      sizeof(*tmp_buffer));
+  fixed_y_t *best_y_base, *target_y_base, *best_rgb_y;
+  fixed_t *best_uv_base, *target_uv_base, *best_rgb_uv;
+  fixed_y_t *best_y, *target_y;
+  fixed_t *best_uv, *target_uv;
  const uint64_t diff_y_threshold = (uint64_t)(3.0 * w * h);
  int ok;
  assert(w > 0);
  assert(h > 0);
+  assert(sizeof(fixed_y_t) == sizeof(fixed_t));

-  if (best_y_base == NULL || best_uv_base == NULL ||
-      target_y_base == NULL || target_uv_base == NULL ||
-      best_rgb_y == NULL || best_rgb_uv == NULL ||
-      tmp_buffer == NULL) {
+  if (tmp_buffer == NULL) {
    ok = 0;
    goto End;
  }
+  best_y_base = tmp_buffer + tmp_buffer_size;
+  target_y_base = best_y_base + best_y_base_size;
+  best_rgb_y = target_y_base + target_y_base_size;
+  best_uv_base = (fixed_t*)(best_rgb_y + best_rgb_y_size);
+  target_uv_base = best_uv_base + best_uv_base_size;
+  best_rgb_uv = target_uv_base + target_uv_base_size;
+  best_y = best_y_base;
+  target_y = target_y_base;
+  best_uv = best_uv_base;
+  target_uv = target_uv_base;

  // Import RGB samples to W/RGB representation.
  for (j = 0; j < height; j += 2) {
@@ -350,8 +347,7 @@ static int DoSharpArgbToYuv(const uint8_t* r_ptr, const uint8_t* g_ptr,
    fixed_y_t* const src2 = tmp_buffer + 3 * w;

    // prepare two rows of input
-    ImportOneRow(r_ptr, g_ptr, b_ptr, rgb_step, rgb_bit_depth, width,
-                 src1);
+    ImportOneRow(r_ptr, g_ptr, b_ptr, rgb_step, rgb_bit_depth, width, src1);
    if (!is_last_row) {
      ImportOneRow(r_ptr + rgb_stride, g_ptr + rgb_stride, b_ptr + rgb_stride,
                   rgb_step, rgb_bit_depth, width, src2);
@@ -361,9 +357,9 @@ static int DoSharpArgbToYuv(const uint8_t* r_ptr, const uint8_t* g_ptr,
    StoreGray(src1, best_y + 0, w);
    StoreGray(src2, best_y + w, w);

-    UpdateW(src1, target_y, w, rgb_bit_depth, transfer_type);
-    UpdateW(src2, target_y + w, w, rgb_bit_depth, transfer_type);
-    UpdateChroma(src1, src2, target_uv, uv_w, rgb_bit_depth, transfer_type);
+    UpdateW(src1, target_y, w, y_bit_depth, transfer_type);
+    UpdateW(src2, target_y + w, w, y_bit_depth, transfer_type);
+    UpdateChroma(src1, src2, target_uv, uv_w, y_bit_depth, transfer_type);
    memcpy(best_uv, target_uv, 3 * uv_w * sizeof(*best_uv));
    best_y += 2 * w;
    best_uv += 3 * uv_w;
@@ -390,15 +386,15 @@ static int DoSharpArgbToYuv(const uint8_t* r_ptr, const uint8_t* g_ptr,
      fixed_y_t* const src2 = tmp_buffer + 3 * w;
      {
        const fixed_t* const next_uv = cur_uv + ((j < h - 2) ? 3 * uv_w : 0);
-        InterpolateTwoRows(best_y, prev_uv, cur_uv, next_uv, w,
-                           src1, src2, rgb_bit_depth);
+        InterpolateTwoRows(best_y, prev_uv, cur_uv, next_uv, w, src1, src2,
+                           y_bit_depth);
        prev_uv = cur_uv;
        cur_uv = next_uv;
      }

-      UpdateW(src1, best_rgb_y + 0 * w, w, rgb_bit_depth, transfer_type);
-      UpdateW(src2, best_rgb_y + 1 * w, w, rgb_bit_depth, transfer_type);
-      UpdateChroma(src1, src2, best_rgb_uv, uv_w, rgb_bit_depth, transfer_type);
+      UpdateW(src1, best_rgb_y + 0 * w, w, y_bit_depth, transfer_type);
+      UpdateW(src2, best_rgb_y + 1 * w, w, y_bit_depth, transfer_type);
+      UpdateChroma(src1, src2, best_rgb_uv, uv_w, y_bit_depth, transfer_type);

      // update two rows of Y and one row of RGB
      diff_y_sum +=
@@ -424,32 +420,26 @@ static int DoSharpArgbToYuv(const uint8_t* r_ptr, const uint8_t* g_ptr,
                        u_stride, v_ptr, v_stride, rgb_bit_depth, yuv_bit_depth,
                        width, height, yuv_matrix);

- End:
-  free(best_y_base);
-  free(best_uv_base);
-  free(target_y_base);
-  free(target_uv_base);
-  free(best_rgb_y);
-  free(best_rgb_uv);
+End:
  free(tmp_buffer);
  return ok;
 }

-#undef SAFE_ALLOC
-
 #if defined(WEBP_USE_THREAD) && !defined(_WIN32)
 #include <pthread.h>  // NOLINT

-#define LOCK_ACCESS \
-    static pthread_mutex_t sharpyuv_lock = PTHREAD_MUTEX_INITIALIZER; \
-    if (pthread_mutex_lock(&sharpyuv_lock)) return
-#define UNLOCK_ACCESS_AND_RETURN                  \
-    do {                                          \
-      (void)pthread_mutex_unlock(&sharpyuv_lock); \
-      return;                                     \
-    } while (0)
+#define LOCK_ACCESS                                                 \
+  static pthread_mutex_t sharpyuv_lock = PTHREAD_MUTEX_INITIALIZER; \
+  if (pthread_mutex_lock(&sharpyuv_lock)) return
+#define UNLOCK_ACCESS_AND_RETURN                \
+  do {                                          \
+    (void)pthread_mutex_unlock(&sharpyuv_lock); \
+    return;                                     \
+  } while (0)
 #else  // !(defined(WEBP_USE_THREAD) && !defined(_WIN32))
-#define LOCK_ACCESS do {} while (0)
+#define LOCK_ACCESS \
+  do {              \
+  } while (0)
 #define UNLOCK_ACCESS_AND_RETURN return
 #endif  // defined(WEBP_USE_THREAD) && !defined(_WIN32)

--- a/sharpyuv/sharpyuv.h
+++ b/sharpyuv/sharpyuv.h
@@ -52,7 +52,7 @@ extern "C" {
 // SharpYUV API version following the convention from semver.org
 #define SHARPYUV_VERSION_MAJOR 0
 #define SHARPYUV_VERSION_MINOR 4
-#define SHARPYUV_VERSION_PATCH 0
+#define SHARPYUV_VERSION_PATCH 2
 // Version as a uint32_t. The major number is the high 8 bits.
 // The minor number is the middle 8 bits. The patch number is the low 16 bits.
 #define SHARPYUV_MAKE_VERSION(MAJOR, MINOR, PATCH) \
@@ -66,10 +66,17 @@ extern "C" {
 SHARPYUV_EXTERN int SharpYuvGetVersion(void);

 // RGB to YUV conversion matrix, in 16 bit fixed point.
-// y = rgb_to_y[0] * r + rgb_to_y[1] * g + rgb_to_y[2] * b + rgb_to_y[3]
-// u = rgb_to_u[0] * r + rgb_to_u[1] * g + rgb_to_u[2] * b + rgb_to_u[3]
-// v = rgb_to_v[0] * r + rgb_to_v[1] * g + rgb_to_v[2] * b + rgb_to_v[3]
-// Then y, u and v values are divided by 1<<16 and rounded.
+// y_ = rgb_to_y[0] * r + rgb_to_y[1] * g + rgb_to_y[2] * b + rgb_to_y[3]
+// u_ = rgb_to_u[0] * r + rgb_to_u[1] * g + rgb_to_u[2] * b + rgb_to_u[3]
+// v_ = rgb_to_v[0] * r + rgb_to_v[1] * g + rgb_to_v[2] * b + rgb_to_v[3]
+// Then the values are divided by 1<<16 and rounded.
+// y = (y_ + (1 << 15)) >> 16
+// u = (u_ + (1 << 15)) >> 16
+// v = (v_ + (1 << 15)) >> 16
+//
+// Typically, the offset values rgb_to_y[3], rgb_to_u[3] and rgb_to_v[3] depend
+// on the input's bit depth, e.g., rgb_to_u[3] = 1 << (rgb_bit_depth - 1 + 16).
+// See also sharpyuv_csp.h to get a predefined matrix or generate a matrix.
 typedef struct {
  int rgb_to_y[4];
  int rgb_to_u[4];
@@ -127,6 +134,8 @@ typedef enum SharpYuvTransferFunctionType {
 //     adjacent pixels on the y, u and v channels. If yuv_bit_depth > 8, they
 //     should be multiples of 2.
 // width, height: width and height of the image in pixels
+// yuv_matrix: RGB to YUV conversion matrix. The matrix values typically
+//     depend on the input's rgb_bit_depth.
 // This function calls SharpYuvConvertWithOptions with a default transfer
 // function of kSharpYuvTransferFunctionSrgb.
 SHARPYUV_EXTERN int SharpYuvConvert(const void* r_ptr, const void* g_ptr,
--- a/sharpyuv/sharpyuv_csp.c
+++ b/sharpyuv/sharpyuv_csp.c
@@ -15,6 +15,8 @@
 #include <math.h>
 #include <stddef.h>

+#include "sharpyuv/sharpyuv.h"
+
 static int ToFixed16(float f) { return (int)floor(f * (1 << 16) + 0.5f); }

 void SharpYuvComputeConversionMatrix(const SharpYuvColorSpace* yuv_color_space,
@@ -22,16 +24,16 @@ void SharpYuvComputeConversionMatrix(const SharpYuvColorSpace* yuv_color_space,
  const float kr = yuv_color_space->kr;
  const float kb = yuv_color_space->kb;
  const float kg = 1.0f - kr - kb;
-  const float cr = 0.5f / (1.0f - kb);
-  const float cb = 0.5f / (1.0f - kr);
+  const float cb = 0.5f / (1.0f - kb);
+  const float cr = 0.5f / (1.0f - kr);

  const int shift = yuv_color_space->bit_depth - 8;

  const float denom = (float)((1 << yuv_color_space->bit_depth) - 1);
  float scale_y = 1.0f;
  float add_y = 0.0f;
-  float scale_u = cr;
-  float scale_v = cb;
+  float scale_u = cb;
+  float scale_v = cr;
  float add_uv = (float)(128 << shift);
  assert(yuv_color_space->bit_depth >= 8);

@@ -59,35 +61,39 @@ void SharpYuvComputeConversionMatrix(const SharpYuvColorSpace* yuv_color_space,
 }

 // Matrices are in YUV_FIX fixed point precision.
-// WebP's matrix, similar but not identical to kRec601LimitedMatrix.
+// WebP's matrix, similar but not identical to kRec601LimitedMatrix
+// Derived using the following formulas:
+// Y = 0.2569 * R + 0.5044 * G + 0.0979 * B + 16
+// U = -0.1483 * R - 0.2911 * G + 0.4394 * B + 128
+// V = 0.4394 * R - 0.3679 * G - 0.0715 * B + 128
 static const SharpYuvConversionMatrix kWebpMatrix = {
-  {16839, 33059, 6420, 16 << 16},
-  {-9719, -19081, 28800, 128 << 16},
-  {28800, -24116, -4684, 128 << 16},
+    {16839, 33059, 6420, 16 << 16},
+    {-9719, -19081, 28800, 128 << 16},
+    {28800, -24116, -4684, 128 << 16},
 };
-// Kr=0.2990f Kb=0.1140f bits=8 range=kSharpYuvRangeLimited
+// Kr=0.2990f Kb=0.1140f bit_depth=8 range=kSharpYuvRangeLimited
 static const SharpYuvConversionMatrix kRec601LimitedMatrix = {
-  {16829, 33039, 6416, 16 << 16},
-  {-9714, -19071, 28784, 128 << 16},
-  {28784, -24103, -4681, 128 << 16},
+    {16829, 33039, 6416, 16 << 16},
+    {-9714, -19071, 28784, 128 << 16},
+    {28784, -24103, -4681, 128 << 16},
 };
-// Kr=0.2990f Kb=0.1140f bits=8 range=kSharpYuvRangeFull
+// Kr=0.2990f Kb=0.1140f bit_depth=8 range=kSharpYuvRangeFull
 static const SharpYuvConversionMatrix kRec601FullMatrix = {
-  {19595, 38470, 7471, 0},
-  {-11058, -21710, 32768, 128 << 16},
-  {32768, -27439, -5329, 128 << 16},
+    {19595, 38470, 7471, 0},
+    {-11058, -21710, 32768, 128 << 16},
+    {32768, -27439, -5329, 128 << 16},
 };
-// Kr=0.2126f Kb=0.0722f bits=8 range=kSharpYuvRangeLimited
+// Kr=0.2126f Kb=0.0722f bit_depth=8 range=kSharpYuvRangeLimited
 static const SharpYuvConversionMatrix kRec709LimitedMatrix = {
-  {11966, 40254, 4064, 16 << 16},
-  {-6596, -22189, 28784, 128 << 16},
-  {28784, -26145, -2639, 128 << 16},
+    {11966, 40254, 4064, 16 << 16},
+    {-6596, -22189, 28784, 128 << 16},
+    {28784, -26145, -2639, 128 << 16},
 };
-// Kr=0.2126f Kb=0.0722f bits=8 range=kSharpYuvRangeFull
+// Kr=0.2126f Kb=0.0722f bit_depth=8 range=kSharpYuvRangeFull
 static const SharpYuvConversionMatrix kRec709FullMatrix = {
-  {13933, 46871, 4732, 0},
-  {-7509, -25259, 32768, 128 << 16},
-  {32768, -29763, -3005, 128 << 16},
+    {13933, 46871, 4732, 0},
+    {-7509, -25259, 32768, 128 << 16},
+    {32768, -29763, -3005, 128 << 16},
 };

 const SharpYuvConversionMatrix* SharpYuvGetConversionMatrix(
--- a/sharpyuv/sharpyuv_csp.h
+++ b/sharpyuv/sharpyuv_csp.h
@@ -20,8 +20,8 @@ extern "C" {

 // Range of YUV values.
 typedef enum {
-  kSharpYuvRangeFull,     // YUV values between [0;255] (for 8 bit)
-  kSharpYuvRangeLimited   // Y in [16;235], YUV in [16;240] (for 8 bit)
+  kSharpYuvRangeFull,    // YUV values between [0;255] (for 8 bit)
+  kSharpYuvRangeLimited  // Y in [16;235], YUV in [16;240] (for 8 bit)
 } SharpYuvRange;

 // Constants that define a YUV color space.
@@ -41,10 +41,15 @@ SHARPYUV_EXTERN void SharpYuvComputeConversionMatrix(

 // Enums for precomputed conversion matrices.
 typedef enum {
+  // WebP's matrix, similar but not identical to kSharpYuvMatrixRec601Limited
  kSharpYuvMatrixWebp = 0,
+  // Kr=0.2990f Kb=0.1140f bit_depth=8 range=kSharpYuvRangeLimited
  kSharpYuvMatrixRec601Limited,
+  // Kr=0.2990f Kb=0.1140f bit_depth=8 range=kSharpYuvRangeFull
  kSharpYuvMatrixRec601Full,
+  // Kr=0.2126f Kb=0.0722f bit_depth=8 range=kSharpYuvRangeLimited
  kSharpYuvMatrixRec709Limited,
+  // Kr=0.2126f Kb=0.0722f bit_depth=8 range=kSharpYuvRangeFull
  kSharpYuvMatrixRec709Full,
  kSharpYuvMatrixNum
 } SharpYuvMatrixType;
--- a/sharpyuv/sharpyuv_dsp.c
+++ b/sharpyuv/sharpyuv_dsp.c
@@ -17,6 +17,7 @@
 #include <stdlib.h>

 #include "sharpyuv/sharpyuv_cpu.h"
+#include "src/dsp/cpu.h"
 #include "src/webp/types.h"

 //-----------------------------------------------------------------------------
--- a/sharpyuv/sharpyuv_gamma.c
+++ b/sharpyuv/sharpyuv_gamma.c
@@ -15,6 +15,7 @@
 #include <float.h>
 #include <math.h>

+#include "sharpyuv/sharpyuv.h"
 #include "src/webp/types.h"

 // Gamma correction compensates loss of resolution during chroma subsampling.
@@ -66,8 +67,7 @@ void SharpYuvInitGammaTables(void) {
        } else {
          value = (1. + a) * pow(g, 1. / kGammaF) - a;
        }
-        kLinearToGammaTabS[v] =
-            (uint32_t)(final_scale * value + 0.5);
+        kLinearToGammaTabS[v] = (uint32_t)(final_scale * value + 0.5);
      }
      // to prevent small rounding errors to cause read-overflow:
      kLinearToGammaTabS[LINEAR_TO_GAMMA_TAB_SIZE + 1] =
@@ -121,10 +121,11 @@ static uint16_t FromLinearSrgb(uint32_t value, int bit_depth) {
 #define MAX(a, b) (((a) > (b)) ? (a) : (b))

 static WEBP_INLINE float Roundf(float x) {
-  if (x < 0)
+  if (x < 0) {
    return (float)ceil((double)(x - 0.5f));
-  else
+  } else {
    return (float)floor((double)(x + 0.5f));
+  }
 }

 static WEBP_INLINE float Powf(float base, float exp) {
@@ -197,7 +198,7 @@ static float ToLinearLog100(float gamma) {
  // The function is non-bijective so choose the middle of [0, 0.01].
  const float mid_interval = 0.01f / 2.f;
  return (gamma <= 0.0f) ? mid_interval
-                          : Powf(10.0f, 2.f * (MIN(gamma, 1.f) - 1.0f));
+                         : Powf(10.0f, 2.f * (MIN(gamma, 1.f) - 1.0f));
 }

 static float FromLinearLog100(float linear) {
@@ -208,12 +209,12 @@ static float ToLinearLog100Sqrt10(float gamma) {
  // The function is non-bijective so choose the middle of [0, 0.00316227766f[.
  const float mid_interval = 0.00316227766f / 2.f;
  return (gamma <= 0.0f) ? mid_interval
-                          : Powf(10.0f, 2.5f * (MIN(gamma, 1.f) - 1.0f));
+                         : Powf(10.0f, 2.5f * (MIN(gamma, 1.f) - 1.0f));
 }

 static float FromLinearLog100Sqrt10(float linear) {
  return (linear < 0.00316227766f) ? 0.0f
-                                  : 1.0f + Log10f(MIN(linear, 1.f)) / 2.5f;
+                                   : 1.0f + Log10f(MIN(linear, 1.f)) / 2.5f;
 }

 static float ToLinearIec61966(float gamma) {
--- a/sharpyuv/sharpyuv_neon.c
+++ b/sharpyuv/sharpyuv_neon.c
@@ -14,9 +14,9 @@
 #include "sharpyuv/sharpyuv_dsp.h"

 #if defined(WEBP_USE_NEON)
+#include <arm_neon.h>
 #include <assert.h>
 #include <stdlib.h>
-#include <arm_neon.h>

 static uint16_t clip_NEON(int v, int max) {
  return (v < 0) ? 0 : (v > max) ? max : (uint16_t)v;
@@ -35,11 +35,11 @@ static uint64_t SharpYuvUpdateY_NEON(const uint16_t* ref, const uint16_t* src,
    const int16x8_t A = vreinterpretq_s16_u16(vld1q_u16(ref + i));
    const int16x8_t B = vreinterpretq_s16_u16(vld1q_u16(src + i));
    const int16x8_t C = vreinterpretq_s16_u16(vld1q_u16(dst + i));
-    const int16x8_t D = vsubq_s16(A, B);       // diff_y
-    const int16x8_t F = vaddq_s16(C, D);       // new_y
+    const int16x8_t D = vsubq_s16(A, B);  // diff_y
+    const int16x8_t F = vaddq_s16(C, D);  // new_y
    const uint16x8_t H =
        vreinterpretq_u16_s16(vmaxq_s16(vminq_s16(F, max), zero));
-    const int16x8_t I = vabsq_s16(D);          // abs(diff_y)
+    const int16x8_t I = vabsq_s16(D);  // abs(diff_y)
    vst1q_u16(dst + i, H);
    sum = vpadalq_u32(sum, vpaddlq_u16(vreinterpretq_u16_s16(I)));
  }
@@ -60,8 +60,8 @@ static void SharpYuvUpdateRGB_NEON(const int16_t* ref, const int16_t* src,
    const int16x8_t A = vld1q_s16(ref + i);
    const int16x8_t B = vld1q_s16(src + i);
    const int16x8_t C = vld1q_s16(dst + i);
-    const int16x8_t D = vsubq_s16(A, B);   // diff_uv
-    const int16x8_t E = vaddq_s16(C, D);   // new_uv
+    const int16x8_t D = vsubq_s16(A, B);  // diff_uv
+    const int16x8_t E = vaddq_s16(C, D);  // new_uv
    vst1q_s16(dst + i, E);
  }
  for (; i < len; ++i) {
--- a/sharpyuv/sharpyuv_sse2.c
+++ b/sharpyuv/sharpyuv_sse2.c
@@ -14,8 +14,11 @@
 #include "sharpyuv/sharpyuv_dsp.h"

 #if defined(WEBP_USE_SSE2)
-#include <stdlib.h>
 #include <emmintrin.h>
+#include <stdlib.h>
+
+#include "src/dsp/cpu.h"
+#include "src/webp/types.h"

 static uint16_t clip_SSE2(int v, int max) {
  return (v < 0) ? 0 : (v > max) ? max : (uint16_t)v;
@@ -41,7 +44,7 @@ static uint64_t SharpYuvUpdateY_SSE2(const uint16_t* ref, const uint16_t* src,
    const __m128i F = _mm_add_epi16(C, D);       // new_y
    const __m128i G = _mm_or_si128(E, one);      // -1 or 1
    const __m128i H = _mm_max_epi16(_mm_min_epi16(F, max), zero);
-    const __m128i I = _mm_madd_epi16(D, G);      // sum(abs(...))
+    const __m128i I = _mm_madd_epi16(D, G);  // sum(abs(...))
    _mm_storeu_si128((__m128i*)(dst + i), H);
    sum = _mm_add_epi32(sum, I);
  }
@@ -63,8 +66,8 @@ static void SharpYuvUpdateRGB_SSE2(const int16_t* ref, const int16_t* src,
    const __m128i A = _mm_loadu_si128((const __m128i*)(ref + i));
    const __m128i B = _mm_loadu_si128((const __m128i*)(src + i));
    const __m128i C = _mm_loadu_si128((const __m128i*)(dst + i));
-    const __m128i D = _mm_sub_epi16(A, B);   // diff_uv
-    const __m128i E = _mm_add_epi16(C, D);   // new_uv
+    const __m128i D = _mm_sub_epi16(A, B);  // diff_uv
+    const __m128i E = _mm_add_epi16(C, D);  // new_uv
    _mm_storeu_si128((__m128i*)(dst + i), E);
  }
  for (; i < len; ++i) {
@@ -90,8 +93,8 @@ static void SharpYuvFilterRow16_SSE2(const int16_t* A, const int16_t* B,
    const __m128i a1b0 = _mm_add_epi16(a1, b0);
    const __m128i a0a1b0b1 = _mm_add_epi16(a0b1, a1b0);  // A0+A1+B0+B1
    const __m128i a0a1b0b1_8 = _mm_add_epi16(a0a1b0b1, kCst8);
-    const __m128i a0b1_2 = _mm_add_epi16(a0b1, a0b1);    // 2*(A0+B1)
-    const __m128i a1b0_2 = _mm_add_epi16(a1b0, a1b0);    // 2*(A1+B0)
+    const __m128i a0b1_2 = _mm_add_epi16(a0b1, a0b1);  // 2*(A0+B1)
+    const __m128i a1b0_2 = _mm_add_epi16(a1b0, a1b0);  // 2*(A1+B0)
    const __m128i c0 = _mm_srai_epi16(_mm_add_epi16(a0b1_2, a0a1b0b1_8), 3);
    const __m128i c1 = _mm_srai_epi16(_mm_add_epi16(a1b0_2, a0a1b0b1_8), 3);
    const __m128i d0 = _mm_add_epi16(c1, a0);
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -36,7 +36,7 @@ libwebp_la_LIBADD += utils/libwebputils.la
 # other than the ones listed on the command line, i.e., after linking, it will
 # not have unresolved symbols. Some platforms (Windows among them) require all
 # symbols in shared libraries to be resolved at library creation.
-libwebp_la_LDFLAGS = -no-undefined -version-info 8:9:1
+libwebp_la_LDFLAGS = -no-undefined -version-info 9:0:2
 libwebpincludedir = $(includedir)/webp
 pkgconfig_DATA = libwebp.pc

@@ -48,7 +48,7 @@ if BUILD_LIBWEBPDECODER
  libwebpdecoder_la_LIBADD += dsp/libwebpdspdecode.la
  libwebpdecoder_la_LIBADD += utils/libwebputilsdecode.la

-  libwebpdecoder_la_LDFLAGS = -no-undefined -version-info 4:9:1
+  libwebpdecoder_la_LDFLAGS = -no-undefined -version-info 5:0:2
  pkgconfig_DATA += libwebpdecoder.pc
 endif

--- a/src/dec/alpha_dec.c
+++ b/src/dec/alpha_dec.c
@@ -11,17 +11,23 @@
 //
 // Author: Skal (pascal.massimino@gmail.com)

+#include <assert.h>
 #include <stdlib.h>
+
 #include "src/dec/alphai_dec.h"
 #include "src/dec/vp8_dec.h"
 #include "src/dec/vp8i_dec.h"
 #include "src/dec/vp8li_dec.h"
+#include "src/dec/webpi_dec.h"
 #include "src/dsp/dsp.h"
 #include "src/utils/quant_levels_dec_utils.h"
 #include "src/utils/utils.h"
+#include "src/webp/decode.h"
 #include "src/webp/format_constants.h"
 #include "src/webp/types.h"

+WEBP_ASSUME_UNSAFE_INDEXABLE_ABI
+
 //------------------------------------------------------------------------------
 // ALPHDecoder object.

@@ -34,8 +40,8 @@ WEBP_NODISCARD static ALPHDecoder* ALPHNew(void) {
 // Clears and deallocates an alpha decoder instance.
 static void ALPHDelete(ALPHDecoder* const dec) {
  if (dec != NULL) {
-    VP8LDelete(dec->vp8l_dec_);
-    dec->vp8l_dec_ = NULL;
+    VP8LDelete(dec->vp8l_dec);
+    dec->vp8l_dec = NULL;
    WebPSafeFree(dec);
  }
 }
@@ -54,29 +60,28 @@ WEBP_NODISCARD static int ALPHInit(ALPHDecoder* const dec, const uint8_t* data,
  const uint8_t* const alpha_data = data + ALPHA_HEADER_LEN;
  const size_t alpha_data_size = data_size - ALPHA_HEADER_LEN;
  int rsrv;
-  VP8Io* const io = &dec->io_;
+  VP8Io* const io = &dec->io;

  assert(data != NULL && output != NULL && src_io != NULL);

  VP8FiltersInit();
-  dec->output_ = output;
-  dec->width_ = src_io->width;
-  dec->height_ = src_io->height;
-  assert(dec->width_ > 0 && dec->height_ > 0);
+  dec->output = output;
+  dec->width = src_io->width;
+  dec->height = src_io->height;
+  assert(dec->width > 0 && dec->height > 0);

  if (data_size <= ALPHA_HEADER_LEN) {
    return 0;
  }

-  dec->method_ = (data[0] >> 0) & 0x03;
-  dec->filter_ = (WEBP_FILTER_TYPE)((data[0] >> 2) & 0x03);
-  dec->pre_processing_ = (data[0] >> 4) & 0x03;
+  dec->method = (data[0] >> 0) & 0x03;
+  dec->filter = (WEBP_FILTER_TYPE)((data[0] >> 2) & 0x03);
+  dec->pre_processing = (data[0] >> 4) & 0x03;
  rsrv = (data[0] >> 6) & 0x03;
-  if (dec->method_ < ALPHA_NO_COMPRESSION ||
-      dec->method_ > ALPHA_LOSSLESS_COMPRESSION ||
-      dec->filter_ >= WEBP_FILTER_LAST ||
-      dec->pre_processing_ > ALPHA_PREPROCESSED_LEVELS ||
-      rsrv != 0) {
+  if (dec->method < ALPHA_NO_COMPRESSION ||
+      dec->method > ALPHA_LOSSLESS_COMPRESSION ||
+      dec->filter >= WEBP_FILTER_LAST ||
+      dec->pre_processing > ALPHA_PREPROCESSED_LEVELS || rsrv != 0) {
    return 0;
  }

@@ -96,12 +101,17 @@ WEBP_NODISCARD static int ALPHInit(ALPHDecoder* const dec, const uint8_t* data,
  io->crop_bottom = src_io->crop_bottom;
  // No need to copy the scaling parameters.

-  if (dec->method_ == ALPHA_NO_COMPRESSION) {
-    const size_t alpha_decoded_size = dec->width_ * dec->height_;
+  if (dec->method == ALPHA_NO_COMPRESSION) {
+    const size_t alpha_decoded_size = dec->width * dec->height;
    ok = (alpha_data_size >= alpha_decoded_size);
  } else {
-    assert(dec->method_ == ALPHA_LOSSLESS_COMPRESSION);
-    ok = VP8LDecodeAlphaHeader(dec, alpha_data, alpha_data_size);
+    assert(dec->method == ALPHA_LOSSLESS_COMPRESSION);
+    {
+      const uint8_t* WEBP_BIDI_INDEXABLE const bounded_alpha_data =
+          WEBP_UNSAFE_FORGE_BIDI_INDEXABLE(const uint8_t*, alpha_data,
+                                           alpha_data_size);
+      ok = VP8LDecodeAlphaHeader(dec, bounded_alpha_data, alpha_data_size);
+    }
  }

  return ok;
@@ -113,32 +123,32 @@ WEBP_NODISCARD static int ALPHInit(ALPHDecoder* const dec, const uint8_t* data,
 // Returns false in case of bitstream error.
 WEBP_NODISCARD static int ALPHDecode(VP8Decoder* const dec, int row,
                                     int num_rows) {
-  ALPHDecoder* const alph_dec = dec->alph_dec_;
-  const int width = alph_dec->width_;
-  const int height = alph_dec->io_.crop_bottom;
-  if (alph_dec->method_ == ALPHA_NO_COMPRESSION) {
+  ALPHDecoder* const alph_dec = dec->alph_dec;
+  const int width = alph_dec->width;
+  const int height = alph_dec->io.crop_bottom;
+  if (alph_dec->method == ALPHA_NO_COMPRESSION) {
    int y;
-    const uint8_t* prev_line = dec->alpha_prev_line_;
-    const uint8_t* deltas = dec->alpha_data_ + ALPHA_HEADER_LEN + row * width;
-    uint8_t* dst = dec->alpha_plane_ + row * width;
-    assert(deltas <= &dec->alpha_data_[dec->alpha_data_size_]);
-    assert(WebPUnfilters[alph_dec->filter_] != NULL);
+    const uint8_t* prev_line = dec->alpha_prev_line;
+    const uint8_t* deltas = dec->alpha_data + ALPHA_HEADER_LEN + row * width;
+    uint8_t* dst = dec->alpha_plane + row * width;
+    assert(deltas <= &dec->alpha_data[dec->alpha_data_size]);
+    assert(WebPUnfilters[alph_dec->filter] != NULL);
    for (y = 0; y < num_rows; ++y) {
-      WebPUnfilters[alph_dec->filter_](prev_line, deltas, dst, width);
+      WebPUnfilters[alph_dec->filter](prev_line, deltas, dst, width);
      prev_line = dst;
      dst += width;
      deltas += width;
    }
-    dec->alpha_prev_line_ = prev_line;
-  } else {  // alph_dec->method_ == ALPHA_LOSSLESS_COMPRESSION
-    assert(alph_dec->vp8l_dec_ != NULL);
+    dec->alpha_prev_line = prev_line;
+  } else {  // alph_dec->method == ALPHA_LOSSLESS_COMPRESSION
+    assert(alph_dec->vp8l_dec != NULL);
    if (!VP8LDecodeAlphaImageStream(alph_dec, row + num_rows)) {
      return 0;
    }
  }

  if (row + num_rows >= height) {
-    dec->is_alpha_decoded_ = 1;
+    dec->is_alpha_decoded = 1;
  }
  return 1;
 }
@@ -148,25 +158,25 @@ WEBP_NODISCARD static int AllocateAlphaPlane(VP8Decoder* const dec,
  const int stride = io->width;
  const int height = io->crop_bottom;
  const uint64_t alpha_size = (uint64_t)stride * height;
-  assert(dec->alpha_plane_mem_ == NULL);
-  dec->alpha_plane_mem_ =
-      (uint8_t*)WebPSafeMalloc(alpha_size, sizeof(*dec->alpha_plane_));
-  if (dec->alpha_plane_mem_ == NULL) {
+  assert(dec->alpha_plane_mem == NULL);
+  dec->alpha_plane_mem =
+      (uint8_t*)WebPSafeMalloc(alpha_size, sizeof(*dec->alpha_plane));
+  if (dec->alpha_plane_mem == NULL) {
    return VP8SetError(dec, VP8_STATUS_OUT_OF_MEMORY,
                       "Alpha decoder initialization failed.");
  }
-  dec->alpha_plane_ = dec->alpha_plane_mem_;
-  dec->alpha_prev_line_ = NULL;
+  dec->alpha_plane = dec->alpha_plane_mem;
+  dec->alpha_prev_line = NULL;
  return 1;
 }

 void WebPDeallocateAlphaMemory(VP8Decoder* const dec) {
  assert(dec != NULL);
-  WebPSafeFree(dec->alpha_plane_mem_);
-  dec->alpha_plane_mem_ = NULL;
-  dec->alpha_plane_ = NULL;
-  ALPHDelete(dec->alph_dec_);
-  dec->alph_dec_ = NULL;
+  WebPSafeFree(dec->alpha_plane_mem);
+  dec->alpha_plane_mem = NULL;
+  dec->alpha_plane = NULL;
+  ALPHDelete(dec->alph_dec);
+  dec->alph_dec = NULL;
 }

 //------------------------------------------------------------------------------
@@ -184,46 +194,49 @@ WEBP_NODISCARD const uint8_t* VP8DecompressAlphaRows(VP8Decoder* const dec,
    return NULL;
  }

-  if (!dec->is_alpha_decoded_) {
-    if (dec->alph_dec_ == NULL) {    // Initialize decoder.
-      dec->alph_dec_ = ALPHNew();
-      if (dec->alph_dec_ == NULL) {
+  if (!dec->is_alpha_decoded) {
+    if (dec->alph_dec == NULL) {  // Initialize decoder.
+      dec->alph_dec = ALPHNew();
+      if (dec->alph_dec == NULL) {
        VP8SetError(dec, VP8_STATUS_OUT_OF_MEMORY,
                    "Alpha decoder initialization failed.");
        return NULL;
      }
      if (!AllocateAlphaPlane(dec, io)) goto Error;
-      if (!ALPHInit(dec->alph_dec_, dec->alpha_data_, dec->alpha_data_size_,
-                    io, dec->alpha_plane_)) {
-        VP8LDecoder* const vp8l_dec = dec->alph_dec_->vp8l_dec_;
-        VP8SetError(dec,
-                    (vp8l_dec == NULL) ? VP8_STATUS_OUT_OF_MEMORY
-                                       : vp8l_dec->status_,
-                    "Alpha decoder initialization failed.");
+      if (!ALPHInit(dec->alph_dec, dec->alpha_data, dec->alpha_data_size, io,
+                    dec->alpha_plane)) {
+        VP8LDecoder* const vp8l_dec = dec->alph_dec->vp8l_dec;
+        VP8SetError(
+            dec,
+            (vp8l_dec == NULL) ? VP8_STATUS_OUT_OF_MEMORY : vp8l_dec->status,
+            "Alpha decoder initialization failed.");
        goto Error;
      }
      // if we allowed use of alpha dithering, check whether it's needed at all
-      if (dec->alph_dec_->pre_processing_ != ALPHA_PREPROCESSED_LEVELS) {
-        dec->alpha_dithering_ = 0;   // disable dithering
+      if (dec->alph_dec->pre_processing != ALPHA_PREPROCESSED_LEVELS) {
+        dec->alpha_dithering = 0;  // disable dithering
      } else {
-        num_rows = height - row;     // decode everything in one pass
+        num_rows = height - row;  // decode everything in one pass
      }
    }

-    assert(dec->alph_dec_ != NULL);
+    assert(dec->alph_dec != NULL);
    assert(row + num_rows <= height);
    if (!ALPHDecode(dec, row, num_rows)) goto Error;

-    if (dec->is_alpha_decoded_) {   // finished?
-      ALPHDelete(dec->alph_dec_);
-      dec->alph_dec_ = NULL;
-      if (dec->alpha_dithering_ > 0) {
-        uint8_t* const alpha = dec->alpha_plane_ + io->crop_top * width
-                             + io->crop_left;
-        if (!WebPDequantizeLevels(alpha,
-                                  io->crop_right - io->crop_left,
-                                  io->crop_bottom - io->crop_top,
-                                  width, dec->alpha_dithering_)) {
+    if (dec->is_alpha_decoded) {  // finished?
+      ALPHDelete(dec->alph_dec);
+      dec->alph_dec = NULL;
+      if (dec->alpha_dithering > 0) {
+        uint8_t* const alpha =
+            dec->alpha_plane + io->crop_top * width + io->crop_left;
+        uint8_t* WEBP_BIDI_INDEXABLE const bounded_alpha =
+            WEBP_UNSAFE_FORGE_BIDI_INDEXABLE(
+                uint8_t*, alpha,
+                (size_t)width*(io->crop_bottom - io->crop_top));
+        if (!WebPDequantizeLevels(bounded_alpha, io->crop_right - io->crop_left,
+                                  io->crop_bottom - io->crop_top, width,
+                                  dec->alpha_dithering)) {
          goto Error;
        }
      }
@@ -231,9 +244,9 @@ WEBP_NODISCARD const uint8_t* VP8DecompressAlphaRows(VP8Decoder* const dec,
  }

  // Return a pointer to the current decoded row.
-  return dec->alpha_plane_ + row * width;
+  return dec->alpha_plane + row * width;

- Error:
+Error:
  WebPDeallocateAlphaMemory(dec);
  return NULL;
 }
--- a/src/dec/alphai_dec.h
+++ b/src/dec/alphai_dec.h
@@ -14,8 +14,13 @@
 #ifndef WEBP_DEC_ALPHAI_DEC_H_
 #define WEBP_DEC_ALPHAI_DEC_H_

+#include "src/dec/vp8_dec.h"
 #include "src/dec/webpi_dec.h"
+#include "src/dsp/dsp.h"
 #include "src/utils/filters_utils.h"
+#include "src/webp/types.h"
+
+WEBP_ASSUME_UNSAFE_INDEXABLE_ABI

 #ifdef __cplusplus
 extern "C" {
@@ -25,30 +30,30 @@ struct VP8LDecoder;  // Defined in dec/vp8li.h.

 typedef struct ALPHDecoder ALPHDecoder;
 struct ALPHDecoder {
-  int width_;
-  int height_;
-  int method_;
-  WEBP_FILTER_TYPE filter_;
-  int pre_processing_;
-  struct VP8LDecoder* vp8l_dec_;
-  VP8Io io_;
-  int use_8b_decode_;  // Although alpha channel requires only 1 byte per
-                       // pixel, sometimes VP8LDecoder may need to allocate
-                       // 4 bytes per pixel internally during decode.
-  uint8_t* output_;
-  const uint8_t* prev_line_;   // last output row (or NULL)
+  int width;
+  int height;
+  int method;
+  WEBP_FILTER_TYPE filter;
+  int pre_processing;
+  struct VP8LDecoder* vp8l_dec;
+  VP8Io io;
+  int use_8b_decode;  // Although alpha channel requires only 1 byte per
+                      // pixel, sometimes VP8LDecoder may need to allocate
+                      // 4 bytes per pixel internally during decode.
+  uint8_t* output;
+  const uint8_t* prev_line;  // last output row (or NULL)
 };

 //------------------------------------------------------------------------------
 // internal functions. Not public.

-// Deallocate memory associated to dec->alpha_plane_ decoding
+// Deallocate memory associated to dec->alpha_plane decoding
 void WebPDeallocateAlphaMemory(VP8Decoder* const dec);

 //------------------------------------------------------------------------------

 #ifdef __cplusplus
-}    // extern "C"
+}  // extern "C"
 #endif

 #endif  // WEBP_DEC_ALPHAI_DEC_H_
--- a/src/dec/buffer_dec.c
+++ b/src/dec/buffer_dec.c
@@ -11,32 +11,37 @@
 //
 // Author: Skal (pascal.massimino@gmail.com)

+#include <assert.h>
 #include <stdlib.h>
+#include <string.h>

 #include "src/dec/vp8i_dec.h"
 #include "src/dec/webpi_dec.h"
+#include "src/utils/rescaler_utils.h"
 #include "src/utils/utils.h"
+#include "src/webp/decode.h"
+#include "src/webp/types.h"
+
+WEBP_ASSUME_UNSAFE_INDEXABLE_ABI

 //------------------------------------------------------------------------------
 // WebPDecBuffer

 // Number of bytes per pixel for the different color-spaces.
-static const uint8_t kModeBpp[MODE_LAST] = {
-  3, 4, 3, 4, 4, 2, 2,
-  4, 4, 4, 2,    // pre-multiplied modes
-  1, 1 };
+static const uint8_t kModeBpp[MODE_LAST] = {3, 4, 3, 4, 4, 2, 2,  //
+                                            4, 4, 4, 2,  // pre-multiplied modes
+                                            1, 1};

-// Check that webp_csp_mode is within the bounds of WEBP_CSP_MODE.
 // Convert to an integer to handle both the unsigned/signed enum cases
 // without the need for casting to remove type limit warnings.
-static int IsValidColorspace(int webp_csp_mode) {
+int IsValidColorspace(int webp_csp_mode) {
  return (webp_csp_mode >= MODE_RGB && webp_csp_mode < MODE_LAST);
 }

 // strictly speaking, the very last (or first, if flipped) row
 // doesn't require padding.
-#define MIN_BUFFER_SIZE(WIDTH, HEIGHT, STRIDE)       \
-    ((uint64_t)(STRIDE) * ((HEIGHT) - 1) + (WIDTH))
+#define MIN_BUFFER_SIZE(WIDTH, HEIGHT, STRIDE) \
+  ((uint64_t)(STRIDE) * ((HEIGHT) - 1) + (WIDTH))

 static VP8StatusCode CheckDecBuffer(const WebPDecBuffer* const buffer) {
  int ok = 1;
@@ -45,9 +50,9 @@ static VP8StatusCode CheckDecBuffer(const WebPDecBuffer* const buffer) {
  const int height = buffer->height;
  if (!IsValidColorspace(mode)) {
    ok = 0;
-  } else if (!WebPIsRGBMode(mode)) {   // YUV checks
+  } else if (!WebPIsRGBMode(mode)) {  // YUV checks
    const WebPYUVABuffer* const buf = &buffer->u.YUVA;
-    const int uv_width  = (width  + 1) / 2;
+    const int uv_width = (width + 1) / 2;
    const int uv_height = (height + 1) / 2;
    const int y_stride = abs(buf->y_stride);
    const int u_stride = abs(buf->u_stride);
@@ -71,7 +76,7 @@ static VP8StatusCode CheckDecBuffer(const WebPDecBuffer* const buffer) {
      ok &= (a_size <= buf->a_size);
      ok &= (buf->a != NULL);
    }
-  } else {    // RGB checks
+  } else {  // RGB checks
    const WebPRGBABuffer* const buf = &buffer->u.RGBA;
    const int stride = abs(buf->stride);
    const uint64_t size =
@@ -123,7 +128,7 @@ static VP8StatusCode AllocateBuffer(WebPDecBuffer* const buffer) {
    }
    buffer->private_memory = output;

-    if (!WebPIsRGBMode(mode)) {   // YUVA initialization
+    if (!WebPIsRGBMode(mode)) {  // YUVA initialization
      WebPYUVABuffer* const buf = &buffer->u.YUVA;
      buf->y = output;
      buf->y_stride = stride;
@@ -181,14 +186,14 @@ VP8StatusCode WebPAllocateDecBuffer(int width, int height,
  if (buffer == NULL || width <= 0 || height <= 0) {
    return VP8_STATUS_INVALID_PARAM;
  }
-  if (options != NULL) {    // First, apply options if there is any.
+  if (options != NULL) {  // First, apply options if there is any.
    if (options->use_cropping) {
      const int cw = options->crop_width;
      const int ch = options->crop_height;
      const int x = options->crop_left & ~1;
      const int y = options->crop_top & ~1;
      if (!WebPCheckCropDimensions(width, height, x, y, cw, ch)) {
-        return VP8_STATUS_INVALID_PARAM;   // out of frame boundary.
+        return VP8_STATUS_INVALID_PARAM;  // out of frame boundary.
      }
      width = cw;
      height = ch;
@@ -198,14 +203,14 @@ VP8StatusCode WebPAllocateDecBuffer(int width, int height,
 #if !defined(WEBP_REDUCE_SIZE)
      int scaled_width = options->scaled_width;
      int scaled_height = options->scaled_height;
-      if (!WebPRescalerGetScaledDimensions(
-              width, height, &scaled_width, &scaled_height)) {
+      if (!WebPRescalerGetScaledDimensions(width, height, &scaled_width,
+                                           &scaled_height)) {
        return VP8_STATUS_INVALID_PARAM;
      }
      width = scaled_width;
      height = scaled_height;
 #else
-      return VP8_STATUS_INVALID_PARAM;   // rescaling not supported
+      return VP8_STATUS_INVALID_PARAM;  // rescaling not supported
 #endif
    }
  }
@@ -231,7 +236,7 @@ int WebPInitDecBufferInternal(WebPDecBuffer* buffer, int version) {
    return 0;  // version mismatch
  }
  if (buffer == NULL) return 0;
-  memset(buffer, 0, sizeof(*buffer));
+  WEBP_UNSAFE_MEMSET(buffer, 0, sizeof(*buffer));
  return 1;
 }

@@ -249,7 +254,7 @@ void WebPCopyDecBuffer(const WebPDecBuffer* const src,
  if (src != NULL && dst != NULL) {
    *dst = *src;
    if (src->private_memory != NULL) {
-      dst->is_external_memory = 1;   // dst buffer doesn't own the memory.
+      dst->is_external_memory = 1;  // dst buffer doesn't own the memory.
      dst->private_memory = NULL;
    }
  }
@@ -260,7 +265,7 @@ void WebPGrabDecBuffer(WebPDecBuffer* const src, WebPDecBuffer* const dst) {
  if (src != NULL && dst != NULL) {
    *dst = *src;
    if (src->private_memory != NULL) {
-      src->is_external_memory = 1;   // src relinquishes ownership
+      src->is_external_memory = 1;  // src relinquishes ownership
      src->private_memory = NULL;
    }
  }
@@ -285,8 +290,8 @@ VP8StatusCode WebPCopyDecBufferPixels(const WebPDecBuffer* const src_buf,
  } else {
    const WebPYUVABuffer* const src = &src_buf->u.YUVA;
    const WebPYUVABuffer* const dst = &dst_buf->u.YUVA;
-    WebPCopyPlane(src->y, src->y_stride, dst->y, dst->y_stride,
-                  src_buf->width, src_buf->height);
+    WebPCopyPlane(src->y, src->y_stride, dst->y, dst->y_stride, src_buf->width,
+                  src_buf->height);
    WebPCopyPlane(src->u, src->u_stride, dst->u, dst->u_stride,
                  (src_buf->width + 1) / 2, (src_buf->height + 1) / 2);
    WebPCopyPlane(src->v, src->v_stride, dst->v, dst->v_stride,
--- a/src/dec/common_dec.h
+++ b/src/dec/common_dec.h
@@ -15,40 +15,48 @@
 #define WEBP_DEC_COMMON_DEC_H_

 // intra prediction modes
-enum { B_DC_PRED = 0,   // 4x4 modes
-       B_TM_PRED = 1,
-       B_VE_PRED = 2,
-       B_HE_PRED = 3,
-       B_RD_PRED = 4,
-       B_VR_PRED = 5,
-       B_LD_PRED = 6,
-       B_VL_PRED = 7,
-       B_HD_PRED = 8,
-       B_HU_PRED = 9,
-       NUM_BMODES = B_HU_PRED + 1 - B_DC_PRED,  // = 10
+enum {
+  B_DC_PRED = 0,  // 4x4 modes
+  B_TM_PRED = 1,
+  B_VE_PRED = 2,
+  B_HE_PRED = 3,
+  B_RD_PRED = 4,
+  B_VR_PRED = 5,
+  B_LD_PRED = 6,
+  B_VL_PRED = 7,
+  B_HD_PRED = 8,
+  B_HU_PRED = 9,
+  NUM_BMODES = B_HU_PRED + 1 - B_DC_PRED,  // = 10

-       // Luma16 or UV modes
-       DC_PRED = B_DC_PRED, V_PRED = B_VE_PRED,
-       H_PRED = B_HE_PRED, TM_PRED = B_TM_PRED,
-       B_PRED = NUM_BMODES,   // refined I4x4 mode
-       NUM_PRED_MODES = 4,
+  // Luma16 or UV modes
+  DC_PRED = B_DC_PRED,
+  V_PRED = B_VE_PRED,
+  H_PRED = B_HE_PRED,
+  TM_PRED = B_TM_PRED,
+  B_PRED = NUM_BMODES,  // refined I4x4 mode
+  NUM_PRED_MODES = 4,

-       // special modes
-       B_DC_PRED_NOTOP = 4,
-       B_DC_PRED_NOLEFT = 5,
-       B_DC_PRED_NOTOPLEFT = 6,
-       NUM_B_DC_MODES = 7 };
+  // special modes
+  B_DC_PRED_NOTOP = 4,
+  B_DC_PRED_NOLEFT = 5,
+  B_DC_PRED_NOTOPLEFT = 6,
+  NUM_B_DC_MODES = 7
+};

-enum { MB_FEATURE_TREE_PROBS = 3,
-       NUM_MB_SEGMENTS = 4,
-       NUM_REF_LF_DELTAS = 4,
-       NUM_MODE_LF_DELTAS = 4,    // I4x4, ZERO, *, SPLIT
-       MAX_NUM_PARTITIONS = 8,
-       // Probabilities
-       NUM_TYPES = 4,   // 0: i16-AC,  1: i16-DC,  2:chroma-AC,  3:i4-AC
-       NUM_BANDS = 8,
-       NUM_CTX = 3,
-       NUM_PROBAS = 11
-     };
+enum {
+  MB_FEATURE_TREE_PROBS = 3,
+  NUM_MB_SEGMENTS = 4,
+  NUM_REF_LF_DELTAS = 4,
+  NUM_MODE_LF_DELTAS = 4,  // I4x4, ZERO, *, SPLIT
+  MAX_NUM_PARTITIONS = 8,
+  // Probabilities
+  NUM_TYPES = 4,  // 0: i16-AC,  1: i16-DC,  2:chroma-AC,  3:i4-AC
+  NUM_BANDS = 8,
+  NUM_CTX = 3,
+  NUM_PROBAS = 11
+};
+
+// Check that webp_csp_mode is within the bounds of WEBP_CSP_MODE.
+int IsValidColorspace(int webp_csp_mode);

 #endif  // WEBP_DEC_COMMON_DEC_H_
--- a/src/dec/frame_dec.c
+++ b/src/dec/frame_dec.c
@@ -11,19 +11,31 @@
 //
 // Author: Skal (pascal.massimino@gmail.com)

+#include <assert.h>
 #include <stdlib.h>
+#include <string.h>
+
+#include "src/dec/common_dec.h"
+#include "src/dec/vp8_dec.h"
 #include "src/dec/vp8i_dec.h"
+#include "src/dec/webpi_dec.h"
+#include "src/dsp/dsp.h"
+#include "src/utils/random_utils.h"
+#include "src/utils/thread_utils.h"
 #include "src/utils/utils.h"
+#include "src/webp/decode.h"
+#include "src/webp/types.h"
+
+WEBP_ASSUME_UNSAFE_INDEXABLE_ABI

 //------------------------------------------------------------------------------
 // Main reconstruction function.

 static const uint16_t kScan[16] = {
-  0 +  0 * BPS,  4 +  0 * BPS, 8 +  0 * BPS, 12 +  0 * BPS,
-  0 +  4 * BPS,  4 +  4 * BPS, 8 +  4 * BPS, 12 +  4 * BPS,
-  0 +  8 * BPS,  4 +  8 * BPS, 8 +  8 * BPS, 12 +  8 * BPS,
-  0 + 12 * BPS,  4 + 12 * BPS, 8 + 12 * BPS, 12 + 12 * BPS
-};
+    0 + 0 * BPS,  4 + 0 * BPS,  8 + 0 * BPS,  12 + 0 * BPS,
+    0 + 4 * BPS,  4 + 4 * BPS,  8 + 4 * BPS,  12 + 4 * BPS,
+    0 + 8 * BPS,  4 + 8 * BPS,  8 + 8 * BPS,  12 + 8 * BPS,
+    0 + 12 * BPS, 4 + 12 * BPS, 8 + 12 * BPS, 12 + 12 * BPS};

 static int CheckMode(int mb_x, int mb_y, int mode) {
  if (mode == B_DC_PRED) {
@@ -37,7 +49,7 @@ static int CheckMode(int mb_x, int mb_y, int mode) {
 }

 static void Copy32b(uint8_t* const dst, const uint8_t* const src) {
-  memcpy(dst, src, 4);
+  WEBP_UNSAFE_MEMCPY(dst, src, 4);
 }

 static WEBP_INLINE void DoTransform(uint32_t bits, const int16_t* const src,
@@ -59,9 +71,9 @@ static WEBP_INLINE void DoTransform(uint32_t bits, const int16_t* const src,

 static void DoUVTransform(uint32_t bits, const int16_t* const src,
                          uint8_t* const dst) {
-  if (bits & 0xff) {    // any non-zero coeff at all?
-    if (bits & 0xaa) {  // any non-zero AC coefficient?
-      VP8TransformUV(src, dst);   // note we don't use the AC3 variant for U/V
+  if (bits & 0xff) {             // any non-zero coeff at all?
+    if (bits & 0xaa) {           // any non-zero AC coefficient?
+      VP8TransformUV(src, dst);  // note we don't use the AC3 variant for U/V
    } else {
      VP8TransformDCUV(src, dst);
    }
@@ -72,11 +84,11 @@ static void ReconstructRow(const VP8Decoder* const dec,
                           const VP8ThreadContext* ctx) {
  int j;
  int mb_x;
-  const int mb_y = ctx->mb_y_;
-  const int cache_id = ctx->id_;
-  uint8_t* const y_dst = dec->yuv_b_ + Y_OFF;
-  uint8_t* const u_dst = dec->yuv_b_ + U_OFF;
-  uint8_t* const v_dst = dec->yuv_b_ + V_OFF;
+  const int mb_y = ctx->mb_y;
+  const int cache_id = ctx->id;
+  uint8_t* const y_dst = dec->yuv_b + Y_OFF;
+  uint8_t* const u_dst = dec->yuv_b + U_OFF;
+  uint8_t* const v_dst = dec->yuv_b + V_OFF;

  // Initialize left-most block.
  for (j = 0; j < 16; ++j) {
@@ -93,14 +105,14 @@ static void ReconstructRow(const VP8Decoder* const dec,
  } else {
    // we only need to do this init once at block (0,0).
    // Afterward, it remains valid for the whole topmost row.
-    memset(y_dst - BPS - 1, 127, 16 + 4 + 1);
-    memset(u_dst - BPS - 1, 127, 8 + 1);
-    memset(v_dst - BPS - 1, 127, 8 + 1);
+    WEBP_UNSAFE_MEMSET(y_dst - BPS - 1, 127, 16 + 4 + 1);
+    WEBP_UNSAFE_MEMSET(u_dst - BPS - 1, 127, 8 + 1);
+    WEBP_UNSAFE_MEMSET(v_dst - BPS - 1, 127, 8 + 1);
  }

  // Reconstruct one row.
-  for (mb_x = 0; mb_x < dec->mb_w_; ++mb_x) {
-    const VP8MBData* const block = ctx->mb_data_ + mb_x;
+  for (mb_x = 0; mb_x < dec->mb_w; ++mb_x) {
+    const VP8MBData* const block = ctx->mb_data + mb_x;

    // Rotate in the left samples from previously decoded block. We move four
    // pixels at a time for alignment reason, and because of in-loop filter.
@@ -115,26 +127,26 @@ static void ReconstructRow(const VP8Decoder* const dec,
    }
    {
      // bring top samples into the cache
-      VP8TopSamples* const top_yuv = dec->yuv_t_ + mb_x;
-      const int16_t* const coeffs = block->coeffs_;
-      uint32_t bits = block->non_zero_y_;
+      VP8TopSamples* const top_yuv = dec->yuv_t + mb_x;
+      const int16_t* const coeffs = block->coeffs;
+      uint32_t bits = block->non_zero_y;
      int n;

      if (mb_y > 0) {
-        memcpy(y_dst - BPS, top_yuv[0].y, 16);
-        memcpy(u_dst - BPS, top_yuv[0].u, 8);
-        memcpy(v_dst - BPS, top_yuv[0].v, 8);
+        WEBP_UNSAFE_MEMCPY(y_dst - BPS, top_yuv[0].y, 16);
+        WEBP_UNSAFE_MEMCPY(u_dst - BPS, top_yuv[0].u, 8);
+        WEBP_UNSAFE_MEMCPY(v_dst - BPS, top_yuv[0].v, 8);
      }

      // predict and add residuals
-      if (block->is_i4x4_) {   // 4x4
+      if (block->is_i4x4) {  // 4x4
        uint32_t* const top_right = (uint32_t*)(y_dst - BPS + 16);

        if (mb_y > 0) {
-          if (mb_x >= dec->mb_w_ - 1) {    // on rightmost border
-            memset(top_right, top_yuv[0].y[15], sizeof(*top_right));
+          if (mb_x >= dec->mb_w - 1) {  // on rightmost border
+            WEBP_UNSAFE_MEMSET(top_right, top_yuv[0].y[15], sizeof(*top_right));
          } else {
-            memcpy(top_right, top_yuv[1].y, sizeof(*top_right));
+            WEBP_UNSAFE_MEMCPY(top_right, top_yuv[1].y, sizeof(*top_right));
          }
        }
        // replicate the top-right pixels below
@@ -143,11 +155,11 @@ static void ReconstructRow(const VP8Decoder* const dec,
        // predict and add residuals for all 4x4 blocks in turn.
        for (n = 0; n < 16; ++n, bits <<= 2) {
          uint8_t* const dst = y_dst + kScan[n];
-          VP8PredLuma4[block->imodes_[n]](dst);
+          VP8PredLuma4[block->imodes[n]](dst);
          DoTransform(bits, coeffs + n * 16, dst);
        }
-      } else {    // 16x16
-        const int pred_func = CheckMode(mb_x, mb_y, block->imodes_[0]);
+      } else {  // 16x16
+        const int pred_func = CheckMode(mb_x, mb_y, block->imodes[0]);
        VP8PredLuma16[pred_func](y_dst);
        if (bits != 0) {
          for (n = 0; n < 16; ++n, bits <<= 2) {
@@ -157,8 +169,8 @@ static void ReconstructRow(const VP8Decoder* const dec,
      }
      {
        // Chroma
-        const uint32_t bits_uv = block->non_zero_uv_;
-        const int pred_func = CheckMode(mb_x, mb_y, block->uvmode_);
+        const uint32_t bits_uv = block->non_zero_uv;
+        const int pred_func = CheckMode(mb_x, mb_y, block->uvmode);
        VP8PredChroma8[pred_func](u_dst);
        VP8PredChroma8[pred_func](v_dst);
        DoUVTransform(bits_uv >> 0, coeffs + 16 * 16, u_dst);
@@ -166,25 +178,28 @@ static void ReconstructRow(const VP8Decoder* const dec,
      }

      // stash away top samples for next block
-      if (mb_y < dec->mb_h_ - 1) {
-        memcpy(top_yuv[0].y, y_dst + 15 * BPS, 16);
-        memcpy(top_yuv[0].u, u_dst +  7 * BPS,  8);
-        memcpy(top_yuv[0].v, v_dst +  7 * BPS,  8);
+      if (mb_y < dec->mb_h - 1) {
+        WEBP_UNSAFE_MEMCPY(top_yuv[0].y, y_dst + 15 * BPS, 16);
+        WEBP_UNSAFE_MEMCPY(top_yuv[0].u, u_dst + 7 * BPS, 8);
+        WEBP_UNSAFE_MEMCPY(top_yuv[0].v, v_dst + 7 * BPS, 8);
      }
    }
-    // Transfer reconstructed samples from yuv_b_ cache to final destination.
+    // Transfer reconstructed samples from yuv_b cache to final destination.
    {
-      const int y_offset = cache_id * 16 * dec->cache_y_stride_;
-      const int uv_offset = cache_id * 8 * dec->cache_uv_stride_;
-      uint8_t* const y_out = dec->cache_y_ + mb_x * 16 + y_offset;
-      uint8_t* const u_out = dec->cache_u_ + mb_x * 8 + uv_offset;
-      uint8_t* const v_out = dec->cache_v_ + mb_x * 8 + uv_offset;
+      const int y_offset = cache_id * 16 * dec->cache_y_stride;
+      const int uv_offset = cache_id * 8 * dec->cache_uv_stride;
+      uint8_t* const y_out = dec->cache_y + mb_x * 16 + y_offset;
+      uint8_t* const u_out = dec->cache_u + mb_x * 8 + uv_offset;
+      uint8_t* const v_out = dec->cache_v + mb_x * 8 + uv_offset;
      for (j = 0; j < 16; ++j) {
-        memcpy(y_out + j * dec->cache_y_stride_, y_dst + j * BPS, 16);
+        WEBP_UNSAFE_MEMCPY(y_out + j * dec->cache_y_stride, y_dst + j * BPS,
+                           16);
      }
      for (j = 0; j < 8; ++j) {
-        memcpy(u_out + j * dec->cache_uv_stride_, u_dst + j * BPS, 8);
-        memcpy(v_out + j * dec->cache_uv_stride_, v_dst + j * BPS, 8);
+        WEBP_UNSAFE_MEMCPY(u_out + j * dec->cache_uv_stride, u_dst + j * BPS,
+                           8);
+        WEBP_UNSAFE_MEMCPY(v_out + j * dec->cache_uv_stride, v_dst + j * BPS,
+                           8);
      }
    }
  }
@@ -198,43 +213,43 @@ static void ReconstructRow(const VP8Decoder* const dec,
 // Simple filter:  up to 2 luma samples are read and 1 is written.
 // Complex filter: up to 4 luma samples are read and 3 are written. Same for
 //                 U/V, so it's 8 samples total (because of the 2x upsampling).
-static const uint8_t kFilterExtraRows[3] = { 0, 2, 8 };
+static const uint8_t kFilterExtraRows[3] = {0, 2, 8};

 static void DoFilter(const VP8Decoder* const dec, int mb_x, int mb_y) {
-  const VP8ThreadContext* const ctx = &dec->thread_ctx_;
-  const int cache_id = ctx->id_;
-  const int y_bps = dec->cache_y_stride_;
-  const VP8FInfo* const f_info = ctx->f_info_ + mb_x;
-  uint8_t* const y_dst = dec->cache_y_ + cache_id * 16 * y_bps + mb_x * 16;
-  const int ilevel = f_info->f_ilevel_;
-  const int limit = f_info->f_limit_;
+  const VP8ThreadContext* const ctx = &dec->thread_ctx;
+  const int cache_id = ctx->id;
+  const int y_bps = dec->cache_y_stride;
+  const VP8FInfo* const f_info = ctx->f_info + mb_x;
+  uint8_t* const y_dst = dec->cache_y + cache_id * 16 * y_bps + mb_x * 16;
+  const int ilevel = f_info->f_ilevel;
+  const int limit = f_info->f_limit;
  if (limit == 0) {
    return;
  }
  assert(limit >= 3);
-  if (dec->filter_type_ == 1) {   // simple
+  if (dec->filter_type == 1) {  // simple
    if (mb_x > 0) {
      VP8SimpleHFilter16(y_dst, y_bps, limit + 4);
    }
-    if (f_info->f_inner_) {
+    if (f_info->f_inner) {
      VP8SimpleHFilter16i(y_dst, y_bps, limit);
    }
    if (mb_y > 0) {
      VP8SimpleVFilter16(y_dst, y_bps, limit + 4);
    }
-    if (f_info->f_inner_) {
+    if (f_info->f_inner) {
      VP8SimpleVFilter16i(y_dst, y_bps, limit);
    }
-  } else {    // complex
-    const int uv_bps = dec->cache_uv_stride_;
-    uint8_t* const u_dst = dec->cache_u_ + cache_id * 8 * uv_bps + mb_x * 8;
-    uint8_t* const v_dst = dec->cache_v_ + cache_id * 8 * uv_bps + mb_x * 8;
-    const int hev_thresh = f_info->hev_thresh_;
+  } else {  // complex
+    const int uv_bps = dec->cache_uv_stride;
+    uint8_t* const u_dst = dec->cache_u + cache_id * 8 * uv_bps + mb_x * 8;
+    uint8_t* const v_dst = dec->cache_v + cache_id * 8 * uv_bps + mb_x * 8;
+    const int hev_thresh = f_info->hev_thresh;
    if (mb_x > 0) {
      VP8HFilter16(y_dst, y_bps, limit + 4, ilevel, hev_thresh);
      VP8HFilter8(u_dst, v_dst, uv_bps, limit + 4, ilevel, hev_thresh);
    }
-    if (f_info->f_inner_) {
+    if (f_info->f_inner) {
      VP8HFilter16i(y_dst, y_bps, limit, ilevel, hev_thresh);
      VP8HFilter8i(u_dst, v_dst, uv_bps, limit, ilevel, hev_thresh);
    }
@@ -242,7 +257,7 @@ static void DoFilter(const VP8Decoder* const dec, int mb_x, int mb_y) {
      VP8VFilter16(y_dst, y_bps, limit + 4, ilevel, hev_thresh);
      VP8VFilter8(u_dst, v_dst, uv_bps, limit + 4, ilevel, hev_thresh);
    }
-    if (f_info->f_inner_) {
+    if (f_info->f_inner) {
      VP8VFilter16i(y_dst, y_bps, limit, ilevel, hev_thresh);
      VP8VFilter8i(u_dst, v_dst, uv_bps, limit, ilevel, hev_thresh);
    }
@@ -252,9 +267,9 @@ static void DoFilter(const VP8Decoder* const dec, int mb_x, int mb_y) {
 // Filter the decoded macroblock row (if needed)
 static void FilterRow(const VP8Decoder* const dec) {
  int mb_x;
-  const int mb_y = dec->thread_ctx_.mb_y_;
-  assert(dec->thread_ctx_.filter_row_);
-  for (mb_x = dec->tl_mb_x_; mb_x < dec->br_mb_x_; ++mb_x) {
+  const int mb_y = dec->thread_ctx.mb_y;
+  assert(dec->thread_ctx.filter_row);
+  for (mb_x = dec->tl_mb_x; mb_x < dec->br_mb_x; ++mb_x) {
    DoFilter(dec, mb_x, mb_y);
  }
 }
@@ -263,51 +278,51 @@ static void FilterRow(const VP8Decoder* const dec) {
 // Precompute the filtering strength for each segment and each i4x4/i16x16 mode.

 static void PrecomputeFilterStrengths(VP8Decoder* const dec) {
-  if (dec->filter_type_ > 0) {
+  if (dec->filter_type > 0) {
    int s;
-    const VP8FilterHeader* const hdr = &dec->filter_hdr_;
+    const VP8FilterHeader* const hdr = &dec->filter_hdr;
    for (s = 0; s < NUM_MB_SEGMENTS; ++s) {
      int i4x4;
      // First, compute the initial level
      int base_level;
-      if (dec->segment_hdr_.use_segment_) {
-        base_level = dec->segment_hdr_.filter_strength_[s];
-        if (!dec->segment_hdr_.absolute_delta_) {
-          base_level += hdr->level_;
+      if (dec->segment_hdr.use_segment) {
+        base_level = dec->segment_hdr.filter_strength[s];
+        if (!dec->segment_hdr.absolute_delta) {
+          base_level += hdr->level;
        }
      } else {
-        base_level = hdr->level_;
+        base_level = hdr->level;
      }
      for (i4x4 = 0; i4x4 <= 1; ++i4x4) {
-        VP8FInfo* const info = &dec->fstrengths_[s][i4x4];
+        VP8FInfo* const info = &dec->fstrengths[s][i4x4];
        int level = base_level;
-        if (hdr->use_lf_delta_) {
-          level += hdr->ref_lf_delta_[0];
+        if (hdr->use_lf_delta) {
+          level += hdr->ref_lf_delta[0];
          if (i4x4) {
-            level += hdr->mode_lf_delta_[0];
+            level += hdr->mode_lf_delta[0];
          }
        }
        level = (level < 0) ? 0 : (level > 63) ? 63 : level;
        if (level > 0) {
          int ilevel = level;
-          if (hdr->sharpness_ > 0) {
-            if (hdr->sharpness_ > 4) {
+          if (hdr->sharpness > 0) {
+            if (hdr->sharpness > 4) {
              ilevel >>= 2;
            } else {
              ilevel >>= 1;
            }
-            if (ilevel > 9 - hdr->sharpness_) {
-              ilevel = 9 - hdr->sharpness_;
+            if (ilevel > 9 - hdr->sharpness) {
+              ilevel = 9 - hdr->sharpness;
            }
          }
          if (ilevel < 1) ilevel = 1;
-          info->f_ilevel_ = ilevel;
-          info->f_limit_ = 2 * level + ilevel;
-          info->hev_thresh_ = (level >= 40) ? 2 : (level >= 15) ? 1 : 0;
+          info->f_ilevel = ilevel;
+          info->f_limit = 2 * level + ilevel;
+          info->hev_thresh = (level >= 40) ? 2 : (level >= 15) ? 1 : 0;
        } else {
-          info->f_limit_ = 0;  // no filtering
+          info->f_limit = 0;  // no filtering
        }
-        info->f_inner_ = i4x4;
+        info->f_inner = i4x4;
      }
    }
  }
@@ -321,9 +336,8 @@ static void PrecomputeFilterStrengths(VP8Decoder* const dec) {

 #define DITHER_AMP_TAB_SIZE 12
 static const uint8_t kQuantToDitherAmp[DITHER_AMP_TAB_SIZE] = {
-  // roughly, it's dqm->uv_mat_[1]
-  8, 7, 6, 4, 4, 2, 2, 2, 1, 1, 1, 1
-};
+    // roughly, it's dqm->uv_mat[1]
+    8, 7, 6, 4, 4, 2, 2, 2, 1, 1, 1, 1};

 void VP8InitDithering(const WebPDecoderOptions* const options,
                      VP8Decoder* const dec) {
@@ -336,24 +350,24 @@ void VP8InitDithering(const WebPDecoderOptions* const options,
      int s;
      int all_amp = 0;
      for (s = 0; s < NUM_MB_SEGMENTS; ++s) {
-        VP8QuantMatrix* const dqm = &dec->dqm_[s];
-        if (dqm->uv_quant_ < DITHER_AMP_TAB_SIZE) {
-          const int idx = (dqm->uv_quant_ < 0) ? 0 : dqm->uv_quant_;
-          dqm->dither_ = (f * kQuantToDitherAmp[idx]) >> 3;
+        VP8QuantMatrix* const dqm = &dec->dqm[s];
+        if (dqm->uv_quant < DITHER_AMP_TAB_SIZE) {
+          const int idx = (dqm->uv_quant < 0) ? 0 : dqm->uv_quant;
+          dqm->dither = (f * kQuantToDitherAmp[idx]) >> 3;
        }
-        all_amp |= dqm->dither_;
+        all_amp |= dqm->dither;
      }
      if (all_amp != 0) {
-        VP8InitRandom(&dec->dithering_rg_, 1.0f);
-        dec->dither_ = 1;
+        VP8InitRandom(&dec->dithering_rg, 1.0f);
+        dec->dither = 1;
      }
    }
    // potentially allow alpha dithering
-    dec->alpha_dithering_ = options->alpha_dithering_strength;
-    if (dec->alpha_dithering_ > 100) {
-      dec->alpha_dithering_ = 100;
-    } else if (dec->alpha_dithering_ < 0) {
-      dec->alpha_dithering_ = 0;
+    dec->alpha_dithering = options->alpha_dithering_strength;
+    if (dec->alpha_dithering > 100) {
+      dec->alpha_dithering = 100;
+    } else if (dec->alpha_dithering < 0) {
+      dec->alpha_dithering = 0;
    }
  }
 }
@@ -370,17 +384,17 @@ static void Dither8x8(VP8Random* const rg, uint8_t* dst, int bps, int amp) {

 static void DitherRow(VP8Decoder* const dec) {
  int mb_x;
-  assert(dec->dither_);
-  for (mb_x = dec->tl_mb_x_; mb_x < dec->br_mb_x_; ++mb_x) {
-    const VP8ThreadContext* const ctx = &dec->thread_ctx_;
-    const VP8MBData* const data = ctx->mb_data_ + mb_x;
-    const int cache_id = ctx->id_;
-    const int uv_bps = dec->cache_uv_stride_;
-    if (data->dither_ >= MIN_DITHER_AMP) {
-      uint8_t* const u_dst = dec->cache_u_ + cache_id * 8 * uv_bps + mb_x * 8;
-      uint8_t* const v_dst = dec->cache_v_ + cache_id * 8 * uv_bps + mb_x * 8;
-      Dither8x8(&dec->dithering_rg_, u_dst, uv_bps, data->dither_);
-      Dither8x8(&dec->dithering_rg_, v_dst, uv_bps, data->dither_);
+  assert(dec->dither);
+  for (mb_x = dec->tl_mb_x; mb_x < dec->br_mb_x; ++mb_x) {
+    const VP8ThreadContext* const ctx = &dec->thread_ctx;
+    const VP8MBData* const data = ctx->mb_data + mb_x;
+    const int cache_id = ctx->id;
+    const int uv_bps = dec->cache_uv_stride;
+    if (data->dither >= MIN_DITHER_AMP) {
+      uint8_t* const u_dst = dec->cache_u + cache_id * 8 * uv_bps + mb_x * 8;
+      uint8_t* const v_dst = dec->cache_v + cache_id * 8 * uv_bps + mb_x * 8;
+      Dither8x8(&dec->dithering_rg, u_dst, uv_bps, data->dither);
+      Dither8x8(&dec->dithering_rg, v_dst, uv_bps, data->dither);
    }
  }
 }
@@ -396,36 +410,36 @@ static void DitherRow(VP8Decoder* const dec) {
 //  * we must clip the remaining pixels against the cropping area. The VP8Io
 //    struct must have the following fields set correctly before calling put():

-#define MACROBLOCK_VPOS(mb_y)  ((mb_y) * 16)    // vertical position of a MB
+#define MACROBLOCK_VPOS(mb_y) ((mb_y) * 16)  // vertical position of a MB

 // Finalize and transmit a complete row. Return false in case of user-abort.
 static int FinishRow(void* arg1, void* arg2) {
  VP8Decoder* const dec = (VP8Decoder*)arg1;
  VP8Io* const io = (VP8Io*)arg2;
  int ok = 1;
-  const VP8ThreadContext* const ctx = &dec->thread_ctx_;
-  const int cache_id = ctx->id_;
-  const int extra_y_rows = kFilterExtraRows[dec->filter_type_];
-  const int ysize = extra_y_rows * dec->cache_y_stride_;
-  const int uvsize = (extra_y_rows / 2) * dec->cache_uv_stride_;
-  const int y_offset = cache_id * 16 * dec->cache_y_stride_;
-  const int uv_offset = cache_id * 8 * dec->cache_uv_stride_;
-  uint8_t* const ydst = dec->cache_y_ - ysize + y_offset;
-  uint8_t* const udst = dec->cache_u_ - uvsize + uv_offset;
-  uint8_t* const vdst = dec->cache_v_ - uvsize + uv_offset;
-  const int mb_y = ctx->mb_y_;
+  const VP8ThreadContext* const ctx = &dec->thread_ctx;
+  const int cache_id = ctx->id;
+  const int extra_y_rows = kFilterExtraRows[dec->filter_type];
+  const int ysize = extra_y_rows * dec->cache_y_stride;
+  const int uvsize = (extra_y_rows / 2) * dec->cache_uv_stride;
+  const int y_offset = cache_id * 16 * dec->cache_y_stride;
+  const int uv_offset = cache_id * 8 * dec->cache_uv_stride;
+  uint8_t* const ydst = dec->cache_y - ysize + y_offset;
+  uint8_t* const udst = dec->cache_u - uvsize + uv_offset;
+  uint8_t* const vdst = dec->cache_v - uvsize + uv_offset;
+  const int mb_y = ctx->mb_y;
  const int is_first_row = (mb_y == 0);
-  const int is_last_row = (mb_y >= dec->br_mb_y_ - 1);
+  const int is_last_row = (mb_y >= dec->br_mb_y - 1);

-  if (dec->mt_method_ == 2) {
+  if (dec->mt_method == 2) {
    ReconstructRow(dec, ctx);
  }

-  if (ctx->filter_row_) {
+  if (ctx->filter_row) {
    FilterRow(dec);
  }

-  if (dec->dither_) {
+  if (dec->dither) {
    DitherRow(dec);
  }

@@ -438,20 +452,20 @@ static int FinishRow(void* arg1, void* arg2) {
      io->u = udst;
      io->v = vdst;
    } else {
-      io->y = dec->cache_y_ + y_offset;
-      io->u = dec->cache_u_ + uv_offset;
-      io->v = dec->cache_v_ + uv_offset;
+      io->y = dec->cache_y + y_offset;
+      io->u = dec->cache_u + uv_offset;
+      io->v = dec->cache_v + uv_offset;
    }

    if (!is_last_row) {
      y_end -= extra_y_rows;
    }
    if (y_end > io->crop_bottom) {
-      y_end = io->crop_bottom;    // make sure we don't overflow on last row.
+      y_end = io->crop_bottom;  // make sure we don't overflow on last row.
    }
-    // If dec->alpha_data_ is not NULL, we have some alpha plane present.
+    // If dec->alpha_data is not NULL, we have some alpha plane present.
    io->a = NULL;
-    if (dec->alpha_data_ != NULL && y_start < y_end) {
+    if (dec->alpha_data != NULL && y_start < y_end) {
      io->a = VP8DecompressAlphaRows(dec, io, y_start, y_end - y_start);
      if (io->a == NULL) {
        return VP8SetError(dec, VP8_STATUS_BITSTREAM_ERROR,
@@ -462,9 +476,9 @@ static int FinishRow(void* arg1, void* arg2) {
      const int delta_y = io->crop_top - y_start;
      y_start = io->crop_top;
      assert(!(delta_y & 1));
-      io->y += dec->cache_y_stride_ * delta_y;
-      io->u += dec->cache_uv_stride_ * (delta_y >> 1);
-      io->v += dec->cache_uv_stride_ * (delta_y >> 1);
+      io->y += dec->cache_y_stride * delta_y;
+      io->u += dec->cache_uv_stride * (delta_y >> 1);
+      io->v += dec->cache_uv_stride * (delta_y >> 1);
      if (io->a != NULL) {
        io->a += io->width * delta_y;
      }
@@ -483,11 +497,14 @@ static int FinishRow(void* arg1, void* arg2) {
    }
  }
  // rotate top samples if needed
-  if (cache_id + 1 == dec->num_caches_) {
+  if (cache_id + 1 == dec->num_caches) {
    if (!is_last_row) {
-      memcpy(dec->cache_y_ - ysize, ydst + 16 * dec->cache_y_stride_, ysize);
-      memcpy(dec->cache_u_ - uvsize, udst + 8 * dec->cache_uv_stride_, uvsize);
-      memcpy(dec->cache_v_ - uvsize, vdst + 8 * dec->cache_uv_stride_, uvsize);
+      WEBP_UNSAFE_MEMCPY(dec->cache_y - ysize, ydst + 16 * dec->cache_y_stride,
+                         ysize);
+      WEBP_UNSAFE_MEMCPY(dec->cache_u - uvsize, udst + 8 * dec->cache_uv_stride,
+                         uvsize);
+      WEBP_UNSAFE_MEMCPY(dec->cache_v - uvsize, vdst + 8 * dec->cache_uv_stride,
+                         uvsize);
    }
  }

@@ -500,43 +517,43 @@ static int FinishRow(void* arg1, void* arg2) {

 int VP8ProcessRow(VP8Decoder* const dec, VP8Io* const io) {
  int ok = 1;
-  VP8ThreadContext* const ctx = &dec->thread_ctx_;
-  const int filter_row =
-      (dec->filter_type_ > 0) &&
-      (dec->mb_y_ >= dec->tl_mb_y_) && (dec->mb_y_ <= dec->br_mb_y_);
-  if (dec->mt_method_ == 0) {
-    // ctx->id_ and ctx->f_info_ are already set
-    ctx->mb_y_ = dec->mb_y_;
-    ctx->filter_row_ = filter_row;
+  VP8ThreadContext* const ctx = &dec->thread_ctx;
+  const int filter_row = (dec->filter_type > 0) &&
+                         (dec->mb_y >= dec->tl_mb_y) &&
+                         (dec->mb_y <= dec->br_mb_y);
+  if (dec->mt_method == 0) {
+    // ctx->id and ctx->f_info are already set
+    ctx->mb_y = dec->mb_y;
+    ctx->filter_row = filter_row;
    ReconstructRow(dec, ctx);
    ok = FinishRow(dec, io);
  } else {
-    WebPWorker* const worker = &dec->worker_;
+    WebPWorker* const worker = &dec->worker;
    // Finish previous job *before* updating context
    ok &= WebPGetWorkerInterface()->Sync(worker);
-    assert(worker->status_ == OK);
-    if (ok) {   // spawn a new deblocking/output job
-      ctx->io_ = *io;
-      ctx->id_ = dec->cache_id_;
-      ctx->mb_y_ = dec->mb_y_;
-      ctx->filter_row_ = filter_row;
-      if (dec->mt_method_ == 2) {  // swap macroblock data
-        VP8MBData* const tmp = ctx->mb_data_;
-        ctx->mb_data_ = dec->mb_data_;
-        dec->mb_data_ = tmp;
+    assert(worker->status == OK);
+    if (ok) {  // spawn a new deblocking/output job
+      ctx->io = *io;
+      ctx->id = dec->cache_id;
+      ctx->mb_y = dec->mb_y;
+      ctx->filter_row = filter_row;
+      if (dec->mt_method == 2) {  // swap macroblock data
+        VP8MBData* const tmp = ctx->mb_data;
+        ctx->mb_data = dec->mb_data;
+        dec->mb_data = tmp;
      } else {
        // perform reconstruction directly in main thread
        ReconstructRow(dec, ctx);
      }
-      if (filter_row) {            // swap filter info
-        VP8FInfo* const tmp = ctx->f_info_;
-        ctx->f_info_ = dec->f_info_;
-        dec->f_info_ = tmp;
+      if (filter_row) {  // swap filter info
+        VP8FInfo* const tmp = ctx->f_info;
+        ctx->f_info = dec->f_info;
+        dec->f_info = tmp;
      }
      // (reconstruct)+filter in parallel
      WebPGetWorkerInterface()->Launch(worker);
-      if (++dec->cache_id_ == dec->num_caches_) {
-        dec->cache_id_ = 0;
+      if (++dec->cache_id == dec->num_caches) {
+        dec->cache_id = 0;
      }
    }
  }
@@ -550,13 +567,13 @@ VP8StatusCode VP8EnterCritical(VP8Decoder* const dec, VP8Io* const io) {
  // Call setup() first. This may trigger additional decoding features on 'io'.
  // Note: Afterward, we must call teardown() no matter what.
  if (io->setup != NULL && !io->setup(io)) {
-    VP8SetError(dec, VP8_STATUS_USER_ABORT, "Frame setup failed");
-    return dec->status_;
+    VP8SetError(dec, VP8_STATUS_INVALID_PARAM, "Frame setup failed");
+    return dec->status;
  }

  // Disable filtering per user request
  if (io->bypass_filtering) {
-    dec->filter_type_ = 0;
+    dec->filter_type = 0;
  }

  // Define the area where we can skip in-loop filtering, in case of cropping.
@@ -569,29 +586,29 @@ VP8StatusCode VP8EnterCritical(VP8Decoder* const dec, VP8Io* const io) {
  // top-left corner of the picture (MB #0). We must filter all the previous
  // macroblocks.
  {
-    const int extra_pixels = kFilterExtraRows[dec->filter_type_];
-    if (dec->filter_type_ == 2) {
+    const int extra_pixels = kFilterExtraRows[dec->filter_type];
+    if (dec->filter_type == 2) {
      // For complex filter, we need to preserve the dependency chain.
-      dec->tl_mb_x_ = 0;
-      dec->tl_mb_y_ = 0;
+      dec->tl_mb_x = 0;
+      dec->tl_mb_y = 0;
    } else {
      // For simple filter, we can filter only the cropped region.
      // We include 'extra_pixels' on the other side of the boundary, since
      // vertical or horizontal filtering of the previous macroblock can
      // modify some abutting pixels.
-      dec->tl_mb_x_ = (io->crop_left - extra_pixels) >> 4;
-      dec->tl_mb_y_ = (io->crop_top - extra_pixels) >> 4;
-      if (dec->tl_mb_x_ < 0) dec->tl_mb_x_ = 0;
-      if (dec->tl_mb_y_ < 0) dec->tl_mb_y_ = 0;
+      dec->tl_mb_x = (io->crop_left - extra_pixels) >> 4;
+      dec->tl_mb_y = (io->crop_top - extra_pixels) >> 4;
+      if (dec->tl_mb_x < 0) dec->tl_mb_x = 0;
+      if (dec->tl_mb_y < 0) dec->tl_mb_y = 0;
    }
    // We need some 'extra' pixels on the right/bottom.
-    dec->br_mb_y_ = (io->crop_bottom + 15 + extra_pixels) >> 4;
-    dec->br_mb_x_ = (io->crop_right + 15 + extra_pixels) >> 4;
-    if (dec->br_mb_x_ > dec->mb_w_) {
-      dec->br_mb_x_ = dec->mb_w_;
+    dec->br_mb_y = (io->crop_bottom + 15 + extra_pixels) >> 4;
+    dec->br_mb_x = (io->crop_right + 15 + extra_pixels) >> 4;
+    if (dec->br_mb_x > dec->mb_w) {
+      dec->br_mb_x = dec->mb_w;
    }
-    if (dec->br_mb_y_ > dec->mb_h_) {
-      dec->br_mb_y_ = dec->mb_h_;
+    if (dec->br_mb_y > dec->mb_h) {
+      dec->br_mb_y = dec->mb_h;
    }
  }
  PrecomputeFilterStrengths(dec);
@@ -600,8 +617,8 @@ VP8StatusCode VP8EnterCritical(VP8Decoder* const dec, VP8Io* const io) {

 int VP8ExitCritical(VP8Decoder* const dec, VP8Io* const io) {
  int ok = 1;
-  if (dec->mt_method_ > 0) {
-    ok = WebPGetWorkerInterface()->Sync(&dec->worker_);
+  if (dec->mt_method > 0) {
+    ok = WebPGetWorkerInterface()->Sync(&dec->worker);
  }

  if (io->teardown != NULL) {
@@ -635,31 +652,31 @@ int VP8ExitCritical(VP8Decoder* const dec, VP8Io* const io) {
 // io->put:         [ 0..15][16..31][ 0..15][...

 #define MT_CACHE_LINES 3
-#define ST_CACHE_LINES 1   // 1 cache row only for single-threaded case
+#define ST_CACHE_LINES 1  // 1 cache row only for single-threaded case

 // Initialize multi/single-thread worker
 static int InitThreadContext(VP8Decoder* const dec) {
-  dec->cache_id_ = 0;
-  if (dec->mt_method_ > 0) {
-    WebPWorker* const worker = &dec->worker_;
+  dec->cache_id = 0;
+  if (dec->mt_method > 0) {
+    WebPWorker* const worker = &dec->worker;
    if (!WebPGetWorkerInterface()->Reset(worker)) {
      return VP8SetError(dec, VP8_STATUS_OUT_OF_MEMORY,
                         "thread initialization failed.");
    }
    worker->data1 = dec;
-    worker->data2 = (void*)&dec->thread_ctx_.io_;
+    worker->data2 = (void*)&dec->thread_ctx.io;
    worker->hook = FinishRow;
-    dec->num_caches_ =
-      (dec->filter_type_ > 0) ? MT_CACHE_LINES : MT_CACHE_LINES - 1;
+    dec->num_caches =
+        (dec->filter_type > 0) ? MT_CACHE_LINES : MT_CACHE_LINES - 1;
  } else {
-    dec->num_caches_ = ST_CACHE_LINES;
+    dec->num_caches = ST_CACHE_LINES;
  }
  return 1;
 }

 int VP8GetThreadMethod(const WebPDecoderOptions* const options,
-                       const WebPHeaderStructure* const headers,
-                       int width, int height) {
+                       const WebPHeaderStructure* const headers, int width,
+                       int height) {
  if (options == NULL || options->use_threads == 0) {
    return 0;
  }
@@ -680,103 +697,104 @@ int VP8GetThreadMethod(const WebPDecoderOptions* const options,
 // Memory setup

 static int AllocateMemory(VP8Decoder* const dec) {
-  const int num_caches = dec->num_caches_;
-  const int mb_w = dec->mb_w_;
+  const int num_caches = dec->num_caches;
+  const int mb_w = dec->mb_w;
  // Note: we use 'size_t' when there's no overflow risk, uint64_t otherwise.
  const size_t intra_pred_mode_size = 4 * mb_w * sizeof(uint8_t);
  const size_t top_size = sizeof(VP8TopSamples) * mb_w;
  const size_t mb_info_size = (mb_w + 1) * sizeof(VP8MB);
  const size_t f_info_size =
-      (dec->filter_type_ > 0) ?
-          mb_w * (dec->mt_method_ > 0 ? 2 : 1) * sizeof(VP8FInfo)
-        : 0;
-  const size_t yuv_size = YUV_SIZE * sizeof(*dec->yuv_b_);
+      (dec->filter_type > 0)
+          ? mb_w * (dec->mt_method > 0 ? 2 : 1) * sizeof(VP8FInfo)
+          : 0;
+  const size_t yuv_size = YUV_SIZE * sizeof(*dec->yuv_b);
  const size_t mb_data_size =
-      (dec->mt_method_ == 2 ? 2 : 1) * mb_w * sizeof(*dec->mb_data_);
-  const size_t cache_height = (16 * num_caches
-                            + kFilterExtraRows[dec->filter_type_]) * 3 / 2;
+      (dec->mt_method == 2 ? 2 : 1) * mb_w * sizeof(*dec->mb_data);
+  const size_t cache_height =
+      (16 * num_caches + kFilterExtraRows[dec->filter_type]) * 3 / 2;
  const size_t cache_size = top_size * cache_height;
  // alpha_size is the only one that scales as width x height.
-  const uint64_t alpha_size = (dec->alpha_data_ != NULL) ?
-      (uint64_t)dec->pic_hdr_.width_ * dec->pic_hdr_.height_ : 0ULL;
-  const uint64_t needed = (uint64_t)intra_pred_mode_size
-                        + top_size + mb_info_size + f_info_size
-                        + yuv_size + mb_data_size
-                        + cache_size + alpha_size + WEBP_ALIGN_CST;
+  const uint64_t alpha_size =
+      (dec->alpha_data != NULL)
+          ? (uint64_t)dec->pic_hdr.width * dec->pic_hdr.height
+          : 0ULL;
+  const uint64_t needed = (uint64_t)intra_pred_mode_size + top_size +
+                          mb_info_size + f_info_size + yuv_size + mb_data_size +
+                          cache_size + alpha_size + WEBP_ALIGN_CST;
  uint8_t* mem;

  if (!CheckSizeOverflow(needed)) return 0;  // check for overflow
-  if (needed > dec->mem_size_) {
-    WebPSafeFree(dec->mem_);
-    dec->mem_size_ = 0;
-    dec->mem_ = WebPSafeMalloc(needed, sizeof(uint8_t));
-    if (dec->mem_ == NULL) {
+  if (needed > dec->mem_size) {
+    WebPSafeFree(dec->mem);
+    dec->mem_size = 0;
+    dec->mem = WebPSafeMalloc(needed, sizeof(uint8_t));
+    if (dec->mem == NULL) {
      return VP8SetError(dec, VP8_STATUS_OUT_OF_MEMORY,
                         "no memory during frame initialization.");
    }
    // down-cast is ok, thanks to WebPSafeMalloc() above.
-    dec->mem_size_ = (size_t)needed;
+    dec->mem_size = (size_t)needed;
  }

-  mem = (uint8_t*)dec->mem_;
-  dec->intra_t_ = mem;
+  mem = (uint8_t*)dec->mem;
+  dec->intra_t = mem;
  mem += intra_pred_mode_size;

-  dec->yuv_t_ = (VP8TopSamples*)mem;
+  dec->yuv_t = (VP8TopSamples*)mem;
  mem += top_size;

-  dec->mb_info_ = ((VP8MB*)mem) + 1;
+  dec->mb_info = ((VP8MB*)mem) + 1;
  mem += mb_info_size;

-  dec->f_info_ = f_info_size ? (VP8FInfo*)mem : NULL;
+  dec->f_info = f_info_size ? (VP8FInfo*)mem : NULL;
  mem += f_info_size;
-  dec->thread_ctx_.id_ = 0;
-  dec->thread_ctx_.f_info_ = dec->f_info_;
-  if (dec->filter_type_ > 0 && dec->mt_method_ > 0) {
+  dec->thread_ctx.id = 0;
+  dec->thread_ctx.f_info = dec->f_info;
+  if (dec->filter_type > 0 && dec->mt_method > 0) {
    // secondary cache line. The deblocking process need to make use of the
    // filtering strength from previous macroblock row, while the new ones
    // are being decoded in parallel. We'll just swap the pointers.
-    dec->thread_ctx_.f_info_ += mb_w;
+    dec->thread_ctx.f_info += mb_w;
  }

  mem = (uint8_t*)WEBP_ALIGN(mem);
  assert((yuv_size & WEBP_ALIGN_CST) == 0);
-  dec->yuv_b_ = mem;
+  dec->yuv_b = mem;
  mem += yuv_size;

-  dec->mb_data_ = (VP8MBData*)mem;
-  dec->thread_ctx_.mb_data_ = (VP8MBData*)mem;
-  if (dec->mt_method_ == 2) {
-    dec->thread_ctx_.mb_data_ += mb_w;
+  dec->mb_data = (VP8MBData*)mem;
+  dec->thread_ctx.mb_data = (VP8MBData*)mem;
+  if (dec->mt_method == 2) {
+    dec->thread_ctx.mb_data += mb_w;
  }
  mem += mb_data_size;

-  dec->cache_y_stride_ = 16 * mb_w;
-  dec->cache_uv_stride_ = 8 * mb_w;
+  dec->cache_y_stride = 16 * mb_w;
+  dec->cache_uv_stride = 8 * mb_w;
  {
-    const int extra_rows = kFilterExtraRows[dec->filter_type_];
-    const int extra_y = extra_rows * dec->cache_y_stride_;
-    const int extra_uv = (extra_rows / 2) * dec->cache_uv_stride_;
-    dec->cache_y_ = mem + extra_y;
-    dec->cache_u_ = dec->cache_y_
-                  + 16 * num_caches * dec->cache_y_stride_ + extra_uv;
-    dec->cache_v_ = dec->cache_u_
-                  + 8 * num_caches * dec->cache_uv_stride_ + extra_uv;
-    dec->cache_id_ = 0;
+    const int extra_rows = kFilterExtraRows[dec->filter_type];
+    const int extra_y = extra_rows * dec->cache_y_stride;
+    const int extra_uv = (extra_rows / 2) * dec->cache_uv_stride;
+    dec->cache_y = mem + extra_y;
+    dec->cache_u =
+        dec->cache_y + 16 * num_caches * dec->cache_y_stride + extra_uv;
+    dec->cache_v =
+        dec->cache_u + 8 * num_caches * dec->cache_uv_stride + extra_uv;
+    dec->cache_id = 0;
  }
  mem += cache_size;

  // alpha plane
-  dec->alpha_plane_ = alpha_size ? mem : NULL;
+  dec->alpha_plane = alpha_size ? mem : NULL;
  mem += alpha_size;
-  assert(mem <= (uint8_t*)dec->mem_ + dec->mem_size_);
+  assert(mem <= (uint8_t*)dec->mem + dec->mem_size);

  // note: left/top-info is initialized once for all.
-  memset(dec->mb_info_ - 1, 0, mb_info_size);
-  VP8InitScanline(dec);   // initialize left too.
+  WEBP_UNSAFE_MEMSET(dec->mb_info - 1, 0, mb_info_size);
+  VP8InitScanline(dec);  // initialize left too.

  // initialize top
-  memset(dec->intra_t_, B_DC_PRED, intra_pred_mode_size);
+  WEBP_UNSAFE_MEMSET(dec->intra_t, B_DC_PRED, intra_pred_mode_size);

  return 1;
 }
@@ -784,16 +802,16 @@ static int AllocateMemory(VP8Decoder* const dec) {
 static void InitIo(VP8Decoder* const dec, VP8Io* io) {
  // prepare 'io'
  io->mb_y = 0;
-  io->y = dec->cache_y_;
-  io->u = dec->cache_u_;
-  io->v = dec->cache_v_;
-  io->y_stride = dec->cache_y_stride_;
-  io->uv_stride = dec->cache_uv_stride_;
+  io->y = dec->cache_y;
+  io->u = dec->cache_u;
+  io->v = dec->cache_v;
+  io->y_stride = dec->cache_y_stride;
+  io->uv_stride = dec->cache_uv_stride;
  io->a = NULL;
 }

 int VP8InitFrame(VP8Decoder* const dec, VP8Io* const io) {
-  if (!InitThreadContext(dec)) return 0;  // call first. Sets dec->num_caches_.
+  if (!InitThreadContext(dec)) return 0;  // call first. Sets dec->num_caches.
  if (!AllocateMemory(dec)) return 0;
  InitIo(dec, io);
  VP8DspInit();  // Init critical function pointers and look-up tables.
--- a/src/dec/idec_dec.c
+++ b/src/dec/idec_dec.c
--- a/src/dec/io_dec.c
+++ b/src/dec/io_dec.c
@@ -12,12 +12,22 @@
 // Author: Skal (pascal.massimino@gmail.com)

 #include <assert.h>
+#include <stddef.h>
 #include <stdlib.h>
+#include <string.h>
+
+#include "src/dec/vp8_dec.h"
 #include "src/dec/vp8i_dec.h"
 #include "src/dec/webpi_dec.h"
+#include "src/dsp/cpu.h"
 #include "src/dsp/dsp.h"
 #include "src/dsp/yuv.h"
+#include "src/utils/rescaler_utils.h"
 #include "src/utils/utils.h"
+#include "src/webp/decode.h"
+#include "src/webp/types.h"
+
+WEBP_ASSUME_UNSAFE_INDEXABLE_ABI

 //------------------------------------------------------------------------------
 // Main YUV<->RGB conversion functions
@@ -25,9 +35,9 @@
 static int EmitYUV(const VP8Io* const io, WebPDecParams* const p) {
  WebPDecBuffer* output = p->output;
  const WebPYUVABuffer* const buf = &output->u.YUVA;
-  uint8_t* const y_dst = buf->y + (size_t)io->mb_y * buf->y_stride;
-  uint8_t* const u_dst = buf->u + (size_t)(io->mb_y >> 1) * buf->u_stride;
-  uint8_t* const v_dst = buf->v + (size_t)(io->mb_y >> 1) * buf->v_stride;
+  uint8_t* const y_dst = buf->y + (ptrdiff_t)io->mb_y * buf->y_stride;
+  uint8_t* const u_dst = buf->u + (ptrdiff_t)(io->mb_y >> 1) * buf->u_stride;
+  uint8_t* const v_dst = buf->v + (ptrdiff_t)(io->mb_y >> 1) * buf->v_stride;
  const int mb_w = io->mb_w;
  const int mb_h = io->mb_h;
  const int uv_w = (mb_w + 1) / 2;
@@ -42,10 +52,9 @@ static int EmitYUV(const VP8Io* const io, WebPDecParams* const p) {
 static int EmitSampledRGB(const VP8Io* const io, WebPDecParams* const p) {
  WebPDecBuffer* const output = p->output;
  WebPRGBABuffer* const buf = &output->u.RGBA;
-  uint8_t* const dst = buf->rgba + (size_t)io->mb_y * buf->stride;
-  WebPSamplerProcessPlane(io->y, io->y_stride,
-                          io->u, io->v, io->uv_stride,
-                          dst, buf->stride, io->mb_w, io->mb_h,
+  uint8_t* const dst = buf->rgba + (ptrdiff_t)io->mb_y * buf->stride;
+  WebPSamplerProcessPlane(io->y, io->y_stride, io->u, io->v, io->uv_stride, dst,
+                          buf->stride, io->mb_w, io->mb_h,
                          WebPSamplers[output->colorspace]);
  return io->mb_h;
 }
@@ -55,9 +64,9 @@ static int EmitSampledRGB(const VP8Io* const io, WebPDecParams* const p) {

 #ifdef FANCY_UPSAMPLING
 static int EmitFancyRGB(const VP8Io* const io, WebPDecParams* const p) {
-  int num_lines_out = io->mb_h;   // a priori guess
+  int num_lines_out = io->mb_h;  // a priori guess
  const WebPRGBABuffer* const buf = &p->output->u.RGBA;
-  uint8_t* dst = buf->rgba + (size_t)io->mb_y * buf->stride;
+  uint8_t* dst = buf->rgba + (ptrdiff_t)io->mb_y * buf->stride;
  WebPUpsampleLinePairFunc upsample = WebPUpsamplers[p->output->colorspace];
  const uint8_t* cur_y = io->y;
  const uint8_t* cur_u = io->u;
@@ -74,8 +83,8 @@ static int EmitFancyRGB(const VP8Io* const io, WebPDecParams* const p) {
    upsample(cur_y, NULL, cur_u, cur_v, cur_u, cur_v, dst, NULL, mb_w);
  } else {
    // We can finish the left-over line from previous call.
-    upsample(p->tmp_y, cur_y, top_u, top_v, cur_u, cur_v,
-             dst - buf->stride, dst, mb_w);
+    upsample(p->tmp_y, cur_y, top_u, top_v, cur_u, cur_v, dst - buf->stride,
+             dst, mb_w);
    ++num_lines_out;
  }
  // Loop over each output pairs of row.
@@ -86,38 +95,37 @@ static int EmitFancyRGB(const VP8Io* const io, WebPDecParams* const p) {
    cur_v += io->uv_stride;
    dst += 2 * buf->stride;
    cur_y += 2 * io->y_stride;
-    upsample(cur_y - io->y_stride, cur_y,
-             top_u, top_v, cur_u, cur_v,
+    upsample(cur_y - io->y_stride, cur_y, top_u, top_v, cur_u, cur_v,
             dst - buf->stride, dst, mb_w);
  }
  // move to last row
  cur_y += io->y_stride;
  if (io->crop_top + y_end < io->crop_bottom) {
    // Save the unfinished samples for next call (as we're not done yet).
-    memcpy(p->tmp_y, cur_y, mb_w * sizeof(*p->tmp_y));
-    memcpy(p->tmp_u, cur_u, uv_w * sizeof(*p->tmp_u));
-    memcpy(p->tmp_v, cur_v, uv_w * sizeof(*p->tmp_v));
+    WEBP_UNSAFE_MEMCPY(p->tmp_y, cur_y, mb_w * sizeof(*p->tmp_y));
+    WEBP_UNSAFE_MEMCPY(p->tmp_u, cur_u, uv_w * sizeof(*p->tmp_u));
+    WEBP_UNSAFE_MEMCPY(p->tmp_v, cur_v, uv_w * sizeof(*p->tmp_v));
    // The fancy upsampler leaves a row unfinished behind
    // (except for the very last row)
    num_lines_out--;
  } else {
    // Process the very last row of even-sized picture
    if (!(y_end & 1)) {
-      upsample(cur_y, NULL, cur_u, cur_v, cur_u, cur_v,
-               dst + buf->stride, NULL, mb_w);
+      upsample(cur_y, NULL, cur_u, cur_v, cur_u, cur_v, dst + buf->stride, NULL,
+               mb_w);
    }
  }
  return num_lines_out;
 }

-#endif    /* FANCY_UPSAMPLING */
+#endif /* FANCY_UPSAMPLING */

 //------------------------------------------------------------------------------

 static void FillAlphaPlane(uint8_t* dst, int w, int h, int stride) {
  int j;
  for (j = 0; j < h; ++j) {
-    memset(dst, 0xff, w * sizeof(*dst));
+    WEBP_UNSAFE_MEMSET(dst, 0xff, w * sizeof(*dst));
    dst += stride;
  }
 }
@@ -128,13 +136,13 @@ static int EmitAlphaYUV(const VP8Io* const io, WebPDecParams* const p,
  const WebPYUVABuffer* const buf = &p->output->u.YUVA;
  const int mb_w = io->mb_w;
  const int mb_h = io->mb_h;
-  uint8_t* dst = buf->a + (size_t)io->mb_y * buf->a_stride;
+  uint8_t* dst = buf->a + (ptrdiff_t)io->mb_y * buf->a_stride;
  int j;
  (void)expected_num_lines_out;
  assert(expected_num_lines_out == mb_h);
  if (alpha != NULL) {
    for (j = 0; j < mb_h; ++j) {
-      memcpy(dst, alpha, mb_w * sizeof(*dst));
+      WEBP_UNSAFE_MEMCPY(dst, alpha, mb_w * sizeof(*dst));
      alpha += io->width;
      dst += buf->a_stride;
    }
@@ -145,8 +153,8 @@ static int EmitAlphaYUV(const VP8Io* const io, WebPDecParams* const p,
  return 0;
 }

-static int GetAlphaSourceRow(const VP8Io* const io,
-                             const uint8_t** alpha, int* const num_rows) {
+static int GetAlphaSourceRow(const VP8Io* const io, const uint8_t** alpha,
+                             int* const num_rows) {
  int start_y = io->mb_y;
  *num_rows = io->mb_h;

@@ -181,17 +189,17 @@ static int EmitAlphaRGB(const VP8Io* const io, WebPDecParams* const p,
        (colorspace == MODE_ARGB || colorspace == MODE_Argb);
    const WebPRGBABuffer* const buf = &p->output->u.RGBA;
    int num_rows;
-    const size_t start_y = GetAlphaSourceRow(io, &alpha, &num_rows);
-    uint8_t* const base_rgba = buf->rgba + start_y * buf->stride;
+    const int start_y = GetAlphaSourceRow(io, &alpha, &num_rows);
+    uint8_t* const base_rgba = buf->rgba + (ptrdiff_t)start_y * buf->stride;
    uint8_t* const dst = base_rgba + (alpha_first ? 0 : 3);
-    const int has_alpha = WebPDispatchAlpha(alpha, io->width, mb_w,
-                                            num_rows, dst, buf->stride);
+    const int has_alpha =
+        WebPDispatchAlpha(alpha, io->width, mb_w, num_rows, dst, buf->stride);
    (void)expected_num_lines_out;
    assert(expected_num_lines_out == num_rows);
    // has_alpha is true if there's non-trivial alpha to premultiply with.
    if (has_alpha && WebPIsPremultipliedMode(colorspace)) {
-      WebPApplyAlphaMultiply(base_rgba, alpha_first,
-                             mb_w, num_rows, buf->stride);
+      WebPApplyAlphaMultiply(base_rgba, alpha_first, mb_w, num_rows,
+                             buf->stride);
    }
  }
  return 0;
@@ -205,8 +213,8 @@ static int EmitAlphaRGBA4444(const VP8Io* const io, WebPDecParams* const p,
    const WEBP_CSP_MODE colorspace = p->output->colorspace;
    const WebPRGBABuffer* const buf = &p->output->u.RGBA;
    int num_rows;
-    const size_t start_y = GetAlphaSourceRow(io, &alpha, &num_rows);
-    uint8_t* const base_rgba = buf->rgba + start_y * buf->stride;
+    const int start_y = GetAlphaSourceRow(io, &alpha, &num_rows);
+    uint8_t* const base_rgba = buf->rgba + (ptrdiff_t)start_y * buf->stride;
 #if (WEBP_SWAP_16BIT_CSP == 1)
    uint8_t* alpha_dst = base_rgba;
 #else
@@ -237,14 +245,14 @@ static int EmitAlphaRGBA4444(const VP8Io* const io, WebPDecParams* const p,
 // YUV rescaling (no final RGB conversion needed)

 #if !defined(WEBP_REDUCE_SIZE)
-static int Rescale(const uint8_t* src, int src_stride,
-                   int new_lines, WebPRescaler* const wrk) {
+static int Rescale(const uint8_t* src, int src_stride, int new_lines,
+                   WebPRescaler* const wrk) {
  int num_lines_out = 0;
-  while (new_lines > 0) {    // import new contributions of source rows.
+  while (new_lines > 0) {  // import new contributions of source rows.
    const int lines_in = WebPRescalerImport(wrk, new_lines, src, src_stride);
    src += lines_in * src_stride;
    new_lines -= lines_in;
-    num_lines_out += WebPRescalerExport(wrk);    // emit output row(s)
+    num_lines_out += WebPRescalerExport(wrk);  // emit output row(s)
  }
  return num_lines_out;
 }
@@ -257,10 +265,10 @@ static int EmitRescaledYUV(const VP8Io* const io, WebPDecParams* const p) {
  if (WebPIsAlphaMode(p->output->colorspace) && io->a != NULL) {
    // Before rescaling, we premultiply the luma directly into the io->y
    // internal buffer. This is OK since these samples are not used for
-    // intra-prediction (the top samples are saved in cache_y_/u_/v_).
+    // intra-prediction (the top samples are saved in cache_y/u/v).
    // But we need to cast the const away, though.
-    WebPMultRows((uint8_t*)io->y, io->y_stride,
-                 io->a, io->width, io->mb_w, mb_h, 0);
+    WebPMultRows((uint8_t*)io->y, io->y_stride, io->a, io->width, io->mb_w,
+                 mb_h, 0);
  }
  num_lines_out = Rescale(io->y, io->y_stride, mb_h, scaler);
  Rescale(io->u, io->uv_stride, uv_mb_h, p->scaler_u);
@@ -271,12 +279,12 @@ static int EmitRescaledYUV(const VP8Io* const io, WebPDecParams* const p) {
 static int EmitRescaledAlphaYUV(const VP8Io* const io, WebPDecParams* const p,
                                int expected_num_lines_out) {
  const WebPYUVABuffer* const buf = &p->output->u.YUVA;
-  uint8_t* const dst_a = buf->a + (size_t)p->last_y * buf->a_stride;
+  uint8_t* const dst_a = buf->a + (ptrdiff_t)p->last_y * buf->a_stride;
  if (io->a != NULL) {
-    uint8_t* const dst_y = buf->y + (size_t)p->last_y * buf->y_stride;
+    uint8_t* const dst_y = buf->y + (ptrdiff_t)p->last_y * buf->y_stride;
    const int num_lines_out = Rescale(io->a, io->width, io->mb_h, p->scaler_a);
    assert(expected_num_lines_out == num_lines_out);
-    if (num_lines_out > 0) {   // unmultiply the Y
+    if (num_lines_out > 0) {  // unmultiply the Y
      WebPMultRows(dst_y, buf->y_stride, dst_a, buf->a_stride,
                   p->scaler_a->dst_width, num_lines_out, 1);
    }
@@ -292,18 +300,18 @@ static int EmitRescaledAlphaYUV(const VP8Io* const io, WebPDecParams* const p,
 static int InitYUVRescaler(const VP8Io* const io, WebPDecParams* const p) {
  const int has_alpha = WebPIsAlphaMode(p->output->colorspace);
  const WebPYUVABuffer* const buf = &p->output->u.YUVA;
-  const int out_width  = io->scaled_width;
+  const int out_width = io->scaled_width;
  const int out_height = io->scaled_height;
-  const int uv_out_width  = (out_width + 1) >> 1;
+  const int uv_out_width = (out_width + 1) >> 1;
  const int uv_out_height = (out_height + 1) >> 1;
-  const int uv_in_width  = (io->mb_w + 1) >> 1;
+  const int uv_in_width = (io->mb_w + 1) >> 1;
  const int uv_in_height = (io->mb_h + 1) >> 1;
  // scratch memory for luma rescaler
  const size_t work_size = 2 * (size_t)out_width;
  const size_t uv_work_size = 2 * uv_out_width;  // and for each u/v ones
  uint64_t total_size;
  size_t rescaler_size;
-  rescaler_t* work;
+  rescaler_t* WEBP_BIDI_INDEXABLE work;
  WebPRescaler* scalers;
  const int num_rescalers = has_alpha ? 4 : 3;

@@ -317,35 +325,34 @@ static int InitYUVRescaler(const VP8Io* const io, WebPDecParams* const p) {
    return 0;
  }

-  p->memory = WebPSafeMalloc(1ULL, (size_t)total_size);
-  if (p->memory == NULL) {
-    return 0;   // memory error
+  work = (rescaler_t*)WebPSafeMalloc(1ULL, (size_t)total_size);
+  if (work == NULL) {
+    return 0;  // memory error
  }
-  work = (rescaler_t*)p->memory;
+  p->memory = work;

-  scalers = (WebPRescaler*)WEBP_ALIGN(
-      (const uint8_t*)work + total_size - rescaler_size);
+  scalers = (WebPRescaler*)WEBP_ALIGN((const uint8_t*)work + total_size -
+                                      rescaler_size);
  p->scaler_y = &scalers[0];
  p->scaler_u = &scalers[1];
  p->scaler_v = &scalers[2];
  p->scaler_a = has_alpha ? &scalers[3] : NULL;

-  if (!WebPRescalerInit(p->scaler_y, io->mb_w, io->mb_h,
-                        buf->y, out_width, out_height, buf->y_stride, 1,
-                        work) ||
-      !WebPRescalerInit(p->scaler_u, uv_in_width, uv_in_height,
-                        buf->u, uv_out_width, uv_out_height, buf->u_stride, 1,
+  if (!WebPRescalerInit(p->scaler_y, io->mb_w, io->mb_h, buf->y, out_width,
+                        out_height, buf->y_stride, 1, work) ||
+      !WebPRescalerInit(p->scaler_u, uv_in_width, uv_in_height, buf->u,
+                        uv_out_width, uv_out_height, buf->u_stride, 1,
                        work + work_size) ||
-      !WebPRescalerInit(p->scaler_v, uv_in_width, uv_in_height,
-                        buf->v, uv_out_width, uv_out_height, buf->v_stride, 1,
+      !WebPRescalerInit(p->scaler_v, uv_in_width, uv_in_height, buf->v,
+                        uv_out_width, uv_out_height, buf->v_stride, 1,
                        work + work_size + uv_work_size)) {
    return 0;
  }
  p->emit = EmitRescaledYUV;

  if (has_alpha) {
-    if (!WebPRescalerInit(p->scaler_a, io->mb_w, io->mb_h,
-                          buf->a, out_width, out_height, buf->a_stride, 1,
+    if (!WebPRescalerInit(p->scaler_a, io->mb_w, io->mb_h, buf->a, out_width,
+                          out_height, buf->a_stride, 1,
                          work + work_size + 2 * uv_work_size)) {
      return 0;
    }
@@ -362,7 +369,7 @@ static int ExportRGB(WebPDecParams* const p, int y_pos) {
  const WebPYUV444Converter convert =
      WebPYUV444Converters[p->output->colorspace];
  const WebPRGBABuffer* const buf = &p->output->u.RGBA;
-  uint8_t* dst = buf->rgba + (size_t)y_pos * buf->stride;
+  uint8_t* dst = buf->rgba + (ptrdiff_t)y_pos * buf->stride;
  int num_lines_out = 0;
  // For RGB rescaling, because of the YUV420, current scan position
  // U/V can be +1/-1 line from the Y one.  Hence the double test.
@@ -373,8 +380,8 @@ static int ExportRGB(WebPDecParams* const p, int y_pos) {
    WebPRescalerExportRow(p->scaler_y);
    WebPRescalerExportRow(p->scaler_u);
    WebPRescalerExportRow(p->scaler_v);
-    convert(p->scaler_y->dst, p->scaler_u->dst, p->scaler_v->dst,
-            dst, p->scaler_y->dst_width);
+    convert(p->scaler_y->dst, p->scaler_u->dst, p->scaler_v->dst, dst,
+            p->scaler_y->dst_width);
    dst += buf->stride;
    ++num_lines_out;
  }
@@ -389,16 +396,16 @@ static int EmitRescaledRGB(const VP8Io* const io, WebPDecParams* const p) {
  while (j < mb_h) {
    const int y_lines_in =
        WebPRescalerImport(p->scaler_y, mb_h - j,
-                           io->y + (size_t)j * io->y_stride, io->y_stride);
+                           io->y + (ptrdiff_t)j * io->y_stride, io->y_stride);
    j += y_lines_in;
    if (WebPRescaleNeededLines(p->scaler_u, uv_mb_h - uv_j)) {
      const int u_lines_in = WebPRescalerImport(
-          p->scaler_u, uv_mb_h - uv_j, io->u + (size_t)uv_j * io->uv_stride,
+          p->scaler_u, uv_mb_h - uv_j, io->u + (ptrdiff_t)uv_j * io->uv_stride,
          io->uv_stride);
      const int v_lines_in = WebPRescalerImport(
-          p->scaler_v, uv_mb_h - uv_j, io->v + (size_t)uv_j * io->uv_stride,
+          p->scaler_v, uv_mb_h - uv_j, io->v + (ptrdiff_t)uv_j * io->uv_stride,
          io->uv_stride);
-      (void)v_lines_in;   // remove a gcc warning
+      (void)v_lines_in;  // remove a gcc warning
      assert(u_lines_in == v_lines_in);
      uv_j += u_lines_in;
    }
@@ -409,10 +416,9 @@ static int EmitRescaledRGB(const VP8Io* const io, WebPDecParams* const p) {

 static int ExportAlpha(WebPDecParams* const p, int y_pos, int max_lines_out) {
  const WebPRGBABuffer* const buf = &p->output->u.RGBA;
-  uint8_t* const base_rgba = buf->rgba + (size_t)y_pos * buf->stride;
+  uint8_t* const base_rgba = buf->rgba + (ptrdiff_t)y_pos * buf->stride;
  const WEBP_CSP_MODE colorspace = p->output->colorspace;
-  const int alpha_first =
-      (colorspace == MODE_ARGB || colorspace == MODE_Argb);
+  const int alpha_first = (colorspace == MODE_ARGB || colorspace == MODE_Argb);
  uint8_t* dst = base_rgba + (alpha_first ? 0 : 3);
  int num_lines_out = 0;
  const int is_premult_alpha = WebPIsPremultipliedMode(colorspace);
@@ -428,8 +434,8 @@ static int ExportAlpha(WebPDecParams* const p, int y_pos, int max_lines_out) {
    ++num_lines_out;
  }
  if (is_premult_alpha && non_opaque) {
-    WebPApplyAlphaMultiply(base_rgba, alpha_first,
-                           width, num_lines_out, buf->stride);
+    WebPApplyAlphaMultiply(base_rgba, alpha_first, width, num_lines_out,
+                           buf->stride);
  }
  return num_lines_out;
 }
@@ -437,7 +443,7 @@ static int ExportAlpha(WebPDecParams* const p, int y_pos, int max_lines_out) {
 static int ExportAlphaRGBA4444(WebPDecParams* const p, int y_pos,
                               int max_lines_out) {
  const WebPRGBABuffer* const buf = &p->output->u.RGBA;
-  uint8_t* const base_rgba = buf->rgba + (size_t)y_pos * buf->stride;
+  uint8_t* const base_rgba = buf->rgba + (ptrdiff_t)y_pos * buf->stride;
 #if (WEBP_SWAP_16BIT_CSP == 1)
  uint8_t* alpha_dst = base_rgba;
 #else
@@ -476,7 +482,7 @@ static int EmitRescaledAlphaRGB(const VP8Io* const io, WebPDecParams* const p,
    int lines_left = expected_num_out_lines;
    const int y_end = p->last_y + lines_left;
    while (lines_left > 0) {
-      const int64_t row_offset = (int64_t)scaler->src_y - io->mb_y;
+      const int64_t row_offset = (ptrdiff_t)scaler->src_y - io->mb_y;
      WebPRescalerImport(scaler, io->mb_h + io->mb_y - scaler->src_y,
                         io->a + row_offset * io->width, io->width);
      lines_left -= p->emit_alpha_row(p, y_end - lines_left, lines_left);
@@ -487,14 +493,15 @@ static int EmitRescaledAlphaRGB(const VP8Io* const io, WebPDecParams* const p,

 static int InitRGBRescaler(const VP8Io* const io, WebPDecParams* const p) {
  const int has_alpha = WebPIsAlphaMode(p->output->colorspace);
-  const int out_width  = io->scaled_width;
+  const int out_width = io->scaled_width;
  const int out_height = io->scaled_height;
-  const int uv_in_width  = (io->mb_w + 1) >> 1;
+  const int uv_in_width = (io->mb_w + 1) >> 1;
  const int uv_in_height = (io->mb_h + 1) >> 1;
  // scratch memory for one rescaler
  const size_t work_size = 2 * (size_t)out_width;
-  rescaler_t* work;  // rescalers work area
-  uint8_t* tmp;   // tmp storage for scaled YUV444 samples before RGB conversion
+  rescaler_t* WEBP_BIDI_INDEXABLE work;  // rescalers work area
+  uint8_t* WEBP_BIDI_INDEXABLE
+      tmp;  // tmp storage for scaled YUV444 samples before RGB conversion
  uint64_t tmp_size1, tmp_size2, total_size;
  size_t rescaler_size;
  WebPRescaler* scalers;
@@ -509,23 +516,22 @@ static int InitRGBRescaler(const VP8Io* const io, WebPDecParams* const p) {
    return 0;
  }

-  p->memory = WebPSafeMalloc(1ULL, (size_t)total_size);
-  if (p->memory == NULL) {
-    return 0;   // memory error
+  work = (rescaler_t*)WebPSafeMalloc(1ULL, (size_t)total_size);
+  if (work == NULL) {
+    return 0;  // memory error
  }
-  work = (rescaler_t*)p->memory;
+  p->memory = work;
  tmp = (uint8_t*)(work + tmp_size1);

-  scalers = (WebPRescaler*)WEBP_ALIGN(
-      (const uint8_t*)work + total_size - rescaler_size);
+  scalers = (WebPRescaler*)WEBP_ALIGN((const uint8_t*)work + total_size -
+                                      rescaler_size);
  p->scaler_y = &scalers[0];
  p->scaler_u = &scalers[1];
  p->scaler_v = &scalers[2];
  p->scaler_a = has_alpha ? &scalers[3] : NULL;

-  if (!WebPRescalerInit(p->scaler_y, io->mb_w, io->mb_h,
-                        tmp + 0 * out_width, out_width, out_height, 0, 1,
-                        work + 0 * work_size) ||
+  if (!WebPRescalerInit(p->scaler_y, io->mb_w, io->mb_h, tmp + 0 * out_width,
+                        out_width, out_height, 0, 1, work + 0 * work_size) ||
      !WebPRescalerInit(p->scaler_u, uv_in_width, uv_in_height,
                        tmp + 1 * out_width, out_width, out_height, 0, 1,
                        work + 1 * work_size) ||
@@ -538,9 +544,8 @@ static int InitRGBRescaler(const VP8Io* const io, WebPDecParams* const p) {
  WebPInitYUV444Converters();

  if (has_alpha) {
-    if (!WebPRescalerInit(p->scaler_a, io->mb_w, io->mb_h,
-                          tmp + 3 * out_width, out_width, out_height, 0, 1,
-                          work + 3 * work_size)) {
+    if (!WebPRescalerInit(p->scaler_a, io->mb_w, io->mb_h, tmp + 3 * out_width,
+                          out_width, out_height, 0, 1, work + 3 * work_size)) {
      return 0;
    }
    p->emit_alpha = EmitRescaledAlphaRGB;
@@ -570,7 +575,9 @@ static int CustomSetup(VP8Io* io) {
  p->emit = NULL;
  p->emit_alpha = NULL;
  p->emit_alpha_row = NULL;
-  if (!WebPIoInitFromOptions(p->options, io, is_alpha ? MODE_YUV : MODE_YUVA)) {
+  // Note: WebPIoInitFromOptions() does not distinguish between MODE_YUV and
+  // MODE_YUVA, only RGB vs YUV.
+  if (!WebPIoInitFromOptions(p->options, io, /*src_colorspace=*/MODE_YUV)) {
    return 0;
  }
  if (is_alpha && WebPIsPremultipliedMode(colorspace)) {
@@ -580,21 +587,21 @@ static int CustomSetup(VP8Io* io) {
 #if !defined(WEBP_REDUCE_SIZE)
    const int ok = is_rgb ? InitRGBRescaler(io, p) : InitYUVRescaler(io, p);
    if (!ok) {
-      return 0;    // memory error
+      return 0;  // memory error
    }
 #else
-    return 0;   // rescaling support not compiled
+    return 0;  // rescaling support not compiled
 #endif
  } else {
    if (is_rgb) {
      WebPInitSamplers();
-      p->emit = EmitSampledRGB;   // default
+      p->emit = EmitSampledRGB;  // default
      if (io->fancy_upsampling) {
 #ifdef FANCY_UPSAMPLING
        const int uv_width = (io->mb_w + 1) >> 1;
        p->memory = WebPSafeMalloc(1ULL, (size_t)(io->mb_w + 2 * uv_width));
        if (p->memory == NULL) {
-          return 0;   // memory error.
+          return 0;  // memory error.
        }
        p->tmp_y = (uint8_t*)p->memory;
        p->tmp_u = p->tmp_y + io->mb_w;
@@ -608,10 +615,10 @@ static int CustomSetup(VP8Io* io) {
    }
    if (is_alpha) {  // need transparency output
      p->emit_alpha =
-          (colorspace == MODE_RGBA_4444 || colorspace == MODE_rgbA_4444) ?
-              EmitAlphaRGBA4444
+          (colorspace == MODE_RGBA_4444 || colorspace == MODE_rgbA_4444)
+              ? EmitAlphaRGBA4444
          : is_rgb ? EmitAlphaRGB
-          : EmitAlphaYUV;
+                   : EmitAlphaYUV;
      if (is_rgb) {
        WebPInitAlphaProcessing();
      }
@@ -653,10 +660,10 @@ static void CustomTeardown(const VP8Io* io) {
 // Main entry point

 void WebPInitCustomIo(WebPDecParams* const params, VP8Io* const io) {
-  io->put      = CustomPut;
-  io->setup    = CustomSetup;
+  io->put = CustomPut;
+  io->setup = CustomSetup;
  io->teardown = CustomTeardown;
-  io->opaque   = params;
+  io->opaque = params;
 }

 //------------------------------------------------------------------------------
--- a/src/dec/quant_dec.c
+++ b/src/dec/quant_dec.c
@@ -11,105 +11,97 @@
 //
 // Author: Skal (pascal.massimino@gmail.com)

+#include "src/dec/common_dec.h"
+#include "src/dec/vp8_dec.h"
 #include "src/dec/vp8i_dec.h"
+#include "src/utils/bit_reader_utils.h"
+#include "src/webp/types.h"

-static WEBP_INLINE int clip(int v, int M) {
-  return v < 0 ? 0 : v > M ? M : v;
-}
+WEBP_ASSUME_UNSAFE_INDEXABLE_ABI
+
+static WEBP_INLINE int clip(int v, int M) { return v < 0 ? 0 : v > M ? M : v; }

 // Paragraph 14.1
 static const uint8_t kDcTable[128] = {
-  4,     5,   6,   7,   8,   9,  10,  10,
-  11,   12,  13,  14,  15,  16,  17,  17,
-  18,   19,  20,  20,  21,  21,  22,  22,
-  23,   23,  24,  25,  25,  26,  27,  28,
-  29,   30,  31,  32,  33,  34,  35,  36,
-  37,   37,  38,  39,  40,  41,  42,  43,
-  44,   45,  46,  46,  47,  48,  49,  50,
-  51,   52,  53,  54,  55,  56,  57,  58,
-  59,   60,  61,  62,  63,  64,  65,  66,
-  67,   68,  69,  70,  71,  72,  73,  74,
-  75,   76,  76,  77,  78,  79,  80,  81,
-  82,   83,  84,  85,  86,  87,  88,  89,
-  91,   93,  95,  96,  98, 100, 101, 102,
-  104, 106, 108, 110, 112, 114, 116, 118,
-  122, 124, 126, 128, 130, 132, 134, 136,
-  138, 140, 143, 145, 148, 151, 154, 157
-};
+    4,   5,   6,   7,   8,   9,   10,  10,  11,  12,  13,  14,  15,  16,  17,
+    17,  18,  19,  20,  20,  21,  21,  22,  22,  23,  23,  24,  25,  25,  26,
+    27,  28,  29,  30,  31,  32,  33,  34,  35,  36,  37,  37,  38,  39,  40,
+    41,  42,  43,  44,  45,  46,  46,  47,  48,  49,  50,  51,  52,  53,  54,
+    55,  56,  57,  58,  59,  60,  61,  62,  63,  64,  65,  66,  67,  68,  69,
+    70,  71,  72,  73,  74,  75,  76,  76,  77,  78,  79,  80,  81,  82,  83,
+    84,  85,  86,  87,  88,  89,  91,  93,  95,  96,  98,  100, 101, 102, 104,
+    106, 108, 110, 112, 114, 116, 118, 122, 124, 126, 128, 130, 132, 134, 136,
+    138, 140, 143, 145, 148, 151, 154, 157};

 static const uint16_t kAcTable[128] = {
-  4,     5,   6,   7,   8,   9,  10,  11,
-  12,   13,  14,  15,  16,  17,  18,  19,
-  20,   21,  22,  23,  24,  25,  26,  27,
-  28,   29,  30,  31,  32,  33,  34,  35,
-  36,   37,  38,  39,  40,  41,  42,  43,
-  44,   45,  46,  47,  48,  49,  50,  51,
-  52,   53,  54,  55,  56,  57,  58,  60,
-  62,   64,  66,  68,  70,  72,  74,  76,
-  78,   80,  82,  84,  86,  88,  90,  92,
-  94,   96,  98, 100, 102, 104, 106, 108,
-  110, 112, 114, 116, 119, 122, 125, 128,
-  131, 134, 137, 140, 143, 146, 149, 152,
-  155, 158, 161, 164, 167, 170, 173, 177,
-  181, 185, 189, 193, 197, 201, 205, 209,
-  213, 217, 221, 225, 229, 234, 239, 245,
-  249, 254, 259, 264, 269, 274, 279, 284
-};
+    4,   5,   6,   7,   8,   9,   10,  11,  12,  13,  14,  15,  16,  17,  18,
+    19,  20,  21,  22,  23,  24,  25,  26,  27,  28,  29,  30,  31,  32,  33,
+    34,  35,  36,  37,  38,  39,  40,  41,  42,  43,  44,  45,  46,  47,  48,
+    49,  50,  51,  52,  53,  54,  55,  56,  57,  58,  60,  62,  64,  66,  68,
+    70,  72,  74,  76,  78,  80,  82,  84,  86,  88,  90,  92,  94,  96,  98,
+    100, 102, 104, 106, 108, 110, 112, 114, 116, 119, 122, 125, 128, 131, 134,
+    137, 140, 143, 146, 149, 152, 155, 158, 161, 164, 167, 170, 173, 177, 181,
+    185, 189, 193, 197, 201, 205, 209, 213, 217, 221, 225, 229, 234, 239, 245,
+    249, 254, 259, 264, 269, 274, 279, 284};

 //------------------------------------------------------------------------------
 // Paragraph 9.6

 void VP8ParseQuant(VP8Decoder* const dec) {
-  VP8BitReader* const br = &dec->br_;
+  VP8BitReader* const br = &dec->br;
  const int base_q0 = VP8GetValue(br, 7, "global-header");
-  const int dqy1_dc = VP8Get(br, "global-header") ?
-       VP8GetSignedValue(br, 4, "global-header") : 0;
-  const int dqy2_dc = VP8Get(br, "global-header") ?
-       VP8GetSignedValue(br, 4, "global-header") : 0;
-  const int dqy2_ac = VP8Get(br, "global-header") ?
-       VP8GetSignedValue(br, 4, "global-header") : 0;
-  const int dquv_dc = VP8Get(br, "global-header") ?
-       VP8GetSignedValue(br, 4, "global-header") : 0;
-  const int dquv_ac = VP8Get(br, "global-header") ?
-       VP8GetSignedValue(br, 4, "global-header") : 0;
+  const int dqy1_dc = VP8Get(br, "global-header")
+                          ? VP8GetSignedValue(br, 4, "global-header")
+                          : 0;
+  const int dqy2_dc = VP8Get(br, "global-header")
+                          ? VP8GetSignedValue(br, 4, "global-header")
+                          : 0;
+  const int dqy2_ac = VP8Get(br, "global-header")
+                          ? VP8GetSignedValue(br, 4, "global-header")
+                          : 0;
+  const int dquv_dc = VP8Get(br, "global-header")
+                          ? VP8GetSignedValue(br, 4, "global-header")
+                          : 0;
+  const int dquv_ac = VP8Get(br, "global-header")
+                          ? VP8GetSignedValue(br, 4, "global-header")
+                          : 0;

-  const VP8SegmentHeader* const hdr = &dec->segment_hdr_;
+  const VP8SegmentHeader* const hdr = &dec->segment_hdr;
  int i;

  for (i = 0; i < NUM_MB_SEGMENTS; ++i) {
    int q;
-    if (hdr->use_segment_) {
-      q = hdr->quantizer_[i];
-      if (!hdr->absolute_delta_) {
+    if (hdr->use_segment) {
+      q = hdr->quantizer[i];
+      if (!hdr->absolute_delta) {
        q += base_q0;
      }
    } else {
      if (i > 0) {
-        dec->dqm_[i] = dec->dqm_[0];
+        dec->dqm[i] = dec->dqm[0];
        continue;
      } else {
        q = base_q0;
      }
    }
    {
-      VP8QuantMatrix* const m = &dec->dqm_[i];
-      m->y1_mat_[0] = kDcTable[clip(q + dqy1_dc, 127)];
-      m->y1_mat_[1] = kAcTable[clip(q + 0,       127)];
+      VP8QuantMatrix* const m = &dec->dqm[i];
+      m->y1_mat[0] = kDcTable[clip(q + dqy1_dc, 127)];
+      m->y1_mat[1] = kAcTable[clip(q + 0, 127)];

-      m->y2_mat_[0] = kDcTable[clip(q + dqy2_dc, 127)] * 2;
+      m->y2_mat[0] = kDcTable[clip(q + dqy2_dc, 127)] * 2;
      // For all x in [0..284], x*155/100 is bitwise equal to (x*101581) >> 16.
      // The smallest precision for that is '(x*6349) >> 12' but 16 is a good
      // word size.
-      m->y2_mat_[1] = (kAcTable[clip(q + dqy2_ac, 127)] * 101581) >> 16;
-      if (m->y2_mat_[1] < 8) m->y2_mat_[1] = 8;
+      m->y2_mat[1] = (kAcTable[clip(q + dqy2_ac, 127)] * 101581) >> 16;
+      if (m->y2_mat[1] < 8) m->y2_mat[1] = 8;

-      m->uv_mat_[0] = kDcTable[clip(q + dquv_dc, 117)];
-      m->uv_mat_[1] = kAcTable[clip(q + dquv_ac, 127)];
+      m->uv_mat[0] = kDcTable[clip(q + dquv_dc, 117)];
+      m->uv_mat[1] = kAcTable[clip(q + dquv_ac, 127)];

-      m->uv_quant_ = q + dquv_ac;   // for dithering strength evaluation
+      m->uv_quant = q + dquv_ac;  // for dithering strength evaluation
    }
  }
 }

 //------------------------------------------------------------------------------
-
--- a/src/dec/tree_dec.c
+++ b/src/dec/tree_dec.c
@@ -11,15 +11,22 @@
 //
 // Author: Skal (pascal.massimino@gmail.com)

+#include <string.h>
+
+#include "src/dec/common_dec.h"
+#include "src/dec/vp8_dec.h"
 #include "src/dec/vp8i_dec.h"
 #include "src/dsp/cpu.h"
 #include "src/utils/bit_reader_inl_utils.h"
+#include "src/utils/bit_reader_utils.h"
+#include "src/webp/types.h"
+
+WEBP_ASSUME_UNSAFE_INDEXABLE_ABI

 #if !defined(USE_GENERIC_TREE)
-#if !defined(__arm__) && !defined(_M_ARM) && !WEBP_AARCH64 && \
-    !defined(__wasm__)
+#if !defined(__arm__) && !defined(_M_ARM) && !WEBP_AARCH64 && !defined(__wasm__)
 // using a table is ~1-2% slower on ARM. Prefer the coded-tree approach then.
-#define USE_GENERIC_TREE 1   // ALTERNATE_CODE
+#define USE_GENERIC_TREE 1  // ALTERNATE_CODE
 #else
 #define USE_GENERIC_TREE 0
 #endif
@@ -27,297 +34,256 @@

 #if (USE_GENERIC_TREE == 1)
 static const int8_t kYModesIntra4[18] = {
-  -B_DC_PRED, 1,
-    -B_TM_PRED, 2,
-      -B_VE_PRED, 3,
-        4, 6,
-          -B_HE_PRED, 5,
-            -B_RD_PRED, -B_VR_PRED,
-        -B_LD_PRED, 7,
-          -B_VL_PRED, 8,
-            -B_HD_PRED, -B_HU_PRED
-};
+    -B_DC_PRED, 1, -B_TM_PRED, 2, -B_VE_PRED, 3,
+    4,          6, -B_HE_PRED, 5, -B_RD_PRED, -B_VR_PRED,
+    -B_LD_PRED, 7, -B_VL_PRED, 8, -B_HD_PRED, -B_HU_PRED};
 #endif

 //------------------------------------------------------------------------------
 // Default probabilities

 // Paragraph 13.5
-static const uint8_t
-  CoeffsProba0[NUM_TYPES][NUM_BANDS][NUM_CTX][NUM_PROBAS] = {
-  { { { 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128 },
-      { 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128 },
-      { 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128 }
-    },
-    { { 253, 136, 254, 255, 228, 219, 128, 128, 128, 128, 128 },
-      { 189, 129, 242, 255, 227, 213, 255, 219, 128, 128, 128 },
-      { 106, 126, 227, 252, 214, 209, 255, 255, 128, 128, 128 }
-    },
-    { { 1, 98, 248, 255, 236, 226, 255, 255, 128, 128, 128 },
-      { 181, 133, 238, 254, 221, 234, 255, 154, 128, 128, 128 },
-      { 78, 134, 202, 247, 198, 180, 255, 219, 128, 128, 128 },
-    },
-    { { 1, 185, 249, 255, 243, 255, 128, 128, 128, 128, 128 },
-      { 184, 150, 247, 255, 236, 224, 128, 128, 128, 128, 128 },
-      { 77, 110, 216, 255, 236, 230, 128, 128, 128, 128, 128 },
-    },
-    { { 1, 101, 251, 255, 241, 255, 128, 128, 128, 128, 128 },
-      { 170, 139, 241, 252, 236, 209, 255, 255, 128, 128, 128 },
-      { 37, 116, 196, 243, 228, 255, 255, 255, 128, 128, 128 }
-    },
-    { { 1, 204, 254, 255, 245, 255, 128, 128, 128, 128, 128 },
-      { 207, 160, 250, 255, 238, 128, 128, 128, 128, 128, 128 },
-      { 102, 103, 231, 255, 211, 171, 128, 128, 128, 128, 128 }
-    },
-    { { 1, 152, 252, 255, 240, 255, 128, 128, 128, 128, 128 },
-      { 177, 135, 243, 255, 234, 225, 128, 128, 128, 128, 128 },
-      { 80, 129, 211, 255, 194, 224, 128, 128, 128, 128, 128 }
-    },
-    { { 1, 1, 255, 128, 128, 128, 128, 128, 128, 128, 128 },
-      { 246, 1, 255, 128, 128, 128, 128, 128, 128, 128, 128 },
-      { 255, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128 }
-    }
-  },
-  { { { 198, 35, 237, 223, 193, 187, 162, 160, 145, 155, 62 },
-      { 131, 45, 198, 221, 172, 176, 220, 157, 252, 221, 1 },
-      { 68, 47, 146, 208, 149, 167, 221, 162, 255, 223, 128 }
-    },
-    { { 1, 149, 241, 255, 221, 224, 255, 255, 128, 128, 128 },
-      { 184, 141, 234, 253, 222, 220, 255, 199, 128, 128, 128 },
-      { 81, 99, 181, 242, 176, 190, 249, 202, 255, 255, 128 }
-    },
-    { { 1, 129, 232, 253, 214, 197, 242, 196, 255, 255, 128 },
-      { 99, 121, 210, 250, 201, 198, 255, 202, 128, 128, 128 },
-      { 23, 91, 163, 242, 170, 187, 247, 210, 255, 255, 128 }
-    },
-    { { 1, 200, 246, 255, 234, 255, 128, 128, 128, 128, 128 },
-      { 109, 178, 241, 255, 231, 245, 255, 255, 128, 128, 128 },
-      { 44, 130, 201, 253, 205, 192, 255, 255, 128, 128, 128 }
-    },
-    { { 1, 132, 239, 251, 219, 209, 255, 165, 128, 128, 128 },
-      { 94, 136, 225, 251, 218, 190, 255, 255, 128, 128, 128 },
-      { 22, 100, 174, 245, 186, 161, 255, 199, 128, 128, 128 }
-    },
-    { { 1, 182, 249, 255, 232, 235, 128, 128, 128, 128, 128 },
-      { 124, 143, 241, 255, 227, 234, 128, 128, 128, 128, 128 },
-      { 35, 77, 181, 251, 193, 211, 255, 205, 128, 128, 128 }
-    },
-    { { 1, 157, 247, 255, 236, 231, 255, 255, 128, 128, 128 },
-      { 121, 141, 235, 255, 225, 227, 255, 255, 128, 128, 128 },
-      { 45, 99, 188, 251, 195, 217, 255, 224, 128, 128, 128 }
-    },
-    { { 1, 1, 251, 255, 213, 255, 128, 128, 128, 128, 128 },
-      { 203, 1, 248, 255, 255, 128, 128, 128, 128, 128, 128 },
-      { 137, 1, 177, 255, 224, 255, 128, 128, 128, 128, 128 }
-    }
-  },
-  { { { 253, 9, 248, 251, 207, 208, 255, 192, 128, 128, 128 },
-      { 175, 13, 224, 243, 193, 185, 249, 198, 255, 255, 128 },
-      { 73, 17, 171, 221, 161, 179, 236, 167, 255, 234, 128 }
-    },
-    { { 1, 95, 247, 253, 212, 183, 255, 255, 128, 128, 128 },
-      { 239, 90, 244, 250, 211, 209, 255, 255, 128, 128, 128 },
-      { 155, 77, 195, 248, 188, 195, 255, 255, 128, 128, 128 }
-    },
-    { { 1, 24, 239, 251, 218, 219, 255, 205, 128, 128, 128 },
-      { 201, 51, 219, 255, 196, 186, 128, 128, 128, 128, 128 },
-      { 69, 46, 190, 239, 201, 218, 255, 228, 128, 128, 128 }
-    },
-    { { 1, 191, 251, 255, 255, 128, 128, 128, 128, 128, 128 },
-      { 223, 165, 249, 255, 213, 255, 128, 128, 128, 128, 128 },
-      { 141, 124, 248, 255, 255, 128, 128, 128, 128, 128, 128 }
-    },
-    { { 1, 16, 248, 255, 255, 128, 128, 128, 128, 128, 128 },
-      { 190, 36, 230, 255, 236, 255, 128, 128, 128, 128, 128 },
-      { 149, 1, 255, 128, 128, 128, 128, 128, 128, 128, 128 }
-    },
-    { { 1, 226, 255, 128, 128, 128, 128, 128, 128, 128, 128 },
-      { 247, 192, 255, 128, 128, 128, 128, 128, 128, 128, 128 },
-      { 240, 128, 255, 128, 128, 128, 128, 128, 128, 128, 128 }
-    },
-    { { 1, 134, 252, 255, 255, 128, 128, 128, 128, 128, 128 },
-      { 213, 62, 250, 255, 255, 128, 128, 128, 128, 128, 128 },
-      { 55, 93, 255, 128, 128, 128, 128, 128, 128, 128, 128 }
-    },
-    { { 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128 },
-      { 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128 },
-      { 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128 }
-    }
-  },
-  { { { 202, 24, 213, 235, 186, 191, 220, 160, 240, 175, 255 },
-      { 126, 38, 182, 232, 169, 184, 228, 174, 255, 187, 128 },
-      { 61, 46, 138, 219, 151, 178, 240, 170, 255, 216, 128 }
-    },
-    { { 1, 112, 230, 250, 199, 191, 247, 159, 255, 255, 128 },
-      { 166, 109, 228, 252, 211, 215, 255, 174, 128, 128, 128 },
-      { 39, 77, 162, 232, 172, 180, 245, 178, 255, 255, 128 }
-    },
-    { { 1, 52, 220, 246, 198, 199, 249, 220, 255, 255, 128 },
-      { 124, 74, 191, 243, 183, 193, 250, 221, 255, 255, 128 },
-      { 24, 71, 130, 219, 154, 170, 243, 182, 255, 255, 128 }
-    },
-    { { 1, 182, 225, 249, 219, 240, 255, 224, 128, 128, 128 },
-      { 149, 150, 226, 252, 216, 205, 255, 171, 128, 128, 128 },
-      { 28, 108, 170, 242, 183, 194, 254, 223, 255, 255, 128 }
-    },
-    { { 1, 81, 230, 252, 204, 203, 255, 192, 128, 128, 128 },
-      { 123, 102, 209, 247, 188, 196, 255, 233, 128, 128, 128 },
-      { 20, 95, 153, 243, 164, 173, 255, 203, 128, 128, 128 }
-    },
-    { { 1, 222, 248, 255, 216, 213, 128, 128, 128, 128, 128 },
-      { 168, 175, 246, 252, 235, 205, 255, 255, 128, 128, 128 },
-      { 47, 116, 215, 255, 211, 212, 255, 255, 128, 128, 128 }
-    },
-    { { 1, 121, 236, 253, 212, 214, 255, 255, 128, 128, 128 },
-      { 141, 84, 213, 252, 201, 202, 255, 219, 128, 128, 128 },
-      { 42, 80, 160, 240, 162, 185, 255, 205, 128, 128, 128 }
-    },
-    { { 1, 1, 255, 128, 128, 128, 128, 128, 128, 128, 128 },
-      { 244, 1, 255, 128, 128, 128, 128, 128, 128, 128, 128 },
-      { 238, 1, 255, 128, 128, 128, 128, 128, 128, 128, 128 }
-    }
-  }
-};
+static const uint8_t CoeffsProba0[NUM_TYPES][NUM_BANDS][NUM_CTX][NUM_PROBAS] = {
+    {{{128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128},
+      {128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128},
+      {128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128}},
+     {{253, 136, 254, 255, 228, 219, 128, 128, 128, 128, 128},
+      {189, 129, 242, 255, 227, 213, 255, 219, 128, 128, 128},
+      {106, 126, 227, 252, 214, 209, 255, 255, 128, 128, 128}},
+     {
+         {1, 98, 248, 255, 236, 226, 255, 255, 128, 128, 128},
+         {181, 133, 238, 254, 221, 234, 255, 154, 128, 128, 128},
+         {78, 134, 202, 247, 198, 180, 255, 219, 128, 128, 128},
+     },
+     {
+         {1, 185, 249, 255, 243, 255, 128, 128, 128, 128, 128},
+         {184, 150, 247, 255, 236, 224, 128, 128, 128, 128, 128},
+         {77, 110, 216, 255, 236, 230, 128, 128, 128, 128, 128},
+     },
+     {{1, 101, 251, 255, 241, 255, 128, 128, 128, 128, 128},
+      {170, 139, 241, 252, 236, 209, 255, 255, 128, 128, 128},
+      {37, 116, 196, 243, 228, 255, 255, 255, 128, 128, 128}},
+     {{1, 204, 254, 255, 245, 255, 128, 128, 128, 128, 128},
+      {207, 160, 250, 255, 238, 128, 128, 128, 128, 128, 128},
+      {102, 103, 231, 255, 211, 171, 128, 128, 128, 128, 128}},
+     {{1, 152, 252, 255, 240, 255, 128, 128, 128, 128, 128},
+      {177, 135, 243, 255, 234, 225, 128, 128, 128, 128, 128},
+      {80, 129, 211, 255, 194, 224, 128, 128, 128, 128, 128}},
+     {{1, 1, 255, 128, 128, 128, 128, 128, 128, 128, 128},
+      {246, 1, 255, 128, 128, 128, 128, 128, 128, 128, 128},
+      {255, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128}}},
+    {{{198, 35, 237, 223, 193, 187, 162, 160, 145, 155, 62},
+      {131, 45, 198, 221, 172, 176, 220, 157, 252, 221, 1},
+      {68, 47, 146, 208, 149, 167, 221, 162, 255, 223, 128}},
+     {{1, 149, 241, 255, 221, 224, 255, 255, 128, 128, 128},
+      {184, 141, 234, 253, 222, 220, 255, 199, 128, 128, 128},
+      {81, 99, 181, 242, 176, 190, 249, 202, 255, 255, 128}},
+     {{1, 129, 232, 253, 214, 197, 242, 196, 255, 255, 128},
+      {99, 121, 210, 250, 201, 198, 255, 202, 128, 128, 128},
+      {23, 91, 163, 242, 170, 187, 247, 210, 255, 255, 128}},
+     {{1, 200, 246, 255, 234, 255, 128, 128, 128, 128, 128},
+      {109, 178, 241, 255, 231, 245, 255, 255, 128, 128, 128},
+      {44, 130, 201, 253, 205, 192, 255, 255, 128, 128, 128}},
+     {{1, 132, 239, 251, 219, 209, 255, 165, 128, 128, 128},
+      {94, 136, 225, 251, 218, 190, 255, 255, 128, 128, 128},
+      {22, 100, 174, 245, 186, 161, 255, 199, 128, 128, 128}},
+     {{1, 182, 249, 255, 232, 235, 128, 128, 128, 128, 128},
+      {124, 143, 241, 255, 227, 234, 128, 128, 128, 128, 128},
+      {35, 77, 181, 251, 193, 211, 255, 205, 128, 128, 128}},
+     {{1, 157, 247, 255, 236, 231, 255, 255, 128, 128, 128},
+      {121, 141, 235, 255, 225, 227, 255, 255, 128, 128, 128},
+      {45, 99, 188, 251, 195, 217, 255, 224, 128, 128, 128}},
+     {{1, 1, 251, 255, 213, 255, 128, 128, 128, 128, 128},
+      {203, 1, 248, 255, 255, 128, 128, 128, 128, 128, 128},
+      {137, 1, 177, 255, 224, 255, 128, 128, 128, 128, 128}}},
+    {{{253, 9, 248, 251, 207, 208, 255, 192, 128, 128, 128},
+      {175, 13, 224, 243, 193, 185, 249, 198, 255, 255, 128},
+      {73, 17, 171, 221, 161, 179, 236, 167, 255, 234, 128}},
+     {{1, 95, 247, 253, 212, 183, 255, 255, 128, 128, 128},
+      {239, 90, 244, 250, 211, 209, 255, 255, 128, 128, 128},
+      {155, 77, 195, 248, 188, 195, 255, 255, 128, 128, 128}},
+     {{1, 24, 239, 251, 218, 219, 255, 205, 128, 128, 128},
+      {201, 51, 219, 255, 196, 186, 128, 128, 128, 128, 128},
+      {69, 46, 190, 239, 201, 218, 255, 228, 128, 128, 128}},
+     {{1, 191, 251, 255, 255, 128, 128, 128, 128, 128, 128},
+      {223, 165, 249, 255, 213, 255, 128, 128, 128, 128, 128},
+      {141, 124, 248, 255, 255, 128, 128, 128, 128, 128, 128}},
+     {{1, 16, 248, 255, 255, 128, 128, 128, 128, 128, 128},
+      {190, 36, 230, 255, 236, 255, 128, 128, 128, 128, 128},
+      {149, 1, 255, 128, 128, 128, 128, 128, 128, 128, 128}},
+     {{1, 226, 255, 128, 128, 128, 128, 128, 128, 128, 128},
+      {247, 192, 255, 128, 128, 128, 128, 128, 128, 128, 128},
+      {240, 128, 255, 128, 128, 128, 128, 128, 128, 128, 128}},
+     {{1, 134, 252, 255, 255, 128, 128, 128, 128, 128, 128},
+      {213, 62, 250, 255, 255, 128, 128, 128, 128, 128, 128},
+      {55, 93, 255, 128, 128, 128, 128, 128, 128, 128, 128}},
+     {{128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128},
+      {128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128},
+      {128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128}}},
+    {{{202, 24, 213, 235, 186, 191, 220, 160, 240, 175, 255},
+      {126, 38, 182, 232, 169, 184, 228, 174, 255, 187, 128},
+      {61, 46, 138, 219, 151, 178, 240, 170, 255, 216, 128}},
+     {{1, 112, 230, 250, 199, 191, 247, 159, 255, 255, 128},
+      {166, 109, 228, 252, 211, 215, 255, 174, 128, 128, 128},
+      {39, 77, 162, 232, 172, 180, 245, 178, 255, 255, 128}},
+     {{1, 52, 220, 246, 198, 199, 249, 220, 255, 255, 128},
+      {124, 74, 191, 243, 183, 193, 250, 221, 255, 255, 128},
+      {24, 71, 130, 219, 154, 170, 243, 182, 255, 255, 128}},
+     {{1, 182, 225, 249, 219, 240, 255, 224, 128, 128, 128},
+      {149, 150, 226, 252, 216, 205, 255, 171, 128, 128, 128},
+      {28, 108, 170, 242, 183, 194, 254, 223, 255, 255, 128}},
+     {{1, 81, 230, 252, 204, 203, 255, 192, 128, 128, 128},
+      {123, 102, 209, 247, 188, 196, 255, 233, 128, 128, 128},
+      {20, 95, 153, 243, 164, 173, 255, 203, 128, 128, 128}},
+     {{1, 222, 248, 255, 216, 213, 128, 128, 128, 128, 128},
+      {168, 175, 246, 252, 235, 205, 255, 255, 128, 128, 128},
+      {47, 116, 215, 255, 211, 212, 255, 255, 128, 128, 128}},
+     {{1, 121, 236, 253, 212, 214, 255, 255, 128, 128, 128},
+      {141, 84, 213, 252, 201, 202, 255, 219, 128, 128, 128},
+      {42, 80, 160, 240, 162, 185, 255, 205, 128, 128, 128}},
+     {{1, 1, 255, 128, 128, 128, 128, 128, 128, 128, 128},
+      {244, 1, 255, 128, 128, 128, 128, 128, 128, 128, 128},
+      {238, 1, 255, 128, 128, 128, 128, 128, 128, 128, 128}}}};

 // Paragraph 11.5
 static const uint8_t kBModesProba[NUM_BMODES][NUM_BMODES][NUM_BMODES - 1] = {
-  { { 231, 120, 48, 89, 115, 113, 120, 152, 112 },
-    { 152, 179, 64, 126, 170, 118, 46, 70, 95 },
-    { 175, 69, 143, 80, 85, 82, 72, 155, 103 },
-    { 56, 58, 10, 171, 218, 189, 17, 13, 152 },
-    { 114, 26, 17, 163, 44, 195, 21, 10, 173 },
-    { 121, 24, 80, 195, 26, 62, 44, 64, 85 },
-    { 144, 71, 10, 38, 171, 213, 144, 34, 26 },
-    { 170, 46, 55, 19, 136, 160, 33, 206, 71 },
-    { 63, 20, 8, 114, 114, 208, 12, 9, 226 },
-    { 81, 40, 11, 96, 182, 84, 29, 16, 36 } },
-  { { 134, 183, 89, 137, 98, 101, 106, 165, 148 },
-    { 72, 187, 100, 130, 157, 111, 32, 75, 80 },
-    { 66, 102, 167, 99, 74, 62, 40, 234, 128 },
-    { 41, 53, 9, 178, 241, 141, 26, 8, 107 },
-    { 74, 43, 26, 146, 73, 166, 49, 23, 157 },
-    { 65, 38, 105, 160, 51, 52, 31, 115, 128 },
-    { 104, 79, 12, 27, 217, 255, 87, 17, 7 },
-    { 87, 68, 71, 44, 114, 51, 15, 186, 23 },
-    { 47, 41, 14, 110, 182, 183, 21, 17, 194 },
-    { 66, 45, 25, 102, 197, 189, 23, 18, 22 } },
-  { { 88, 88, 147, 150, 42, 46, 45, 196, 205 },
-    { 43, 97, 183, 117, 85, 38, 35, 179, 61 },
-    { 39, 53, 200, 87, 26, 21, 43, 232, 171 },
-    { 56, 34, 51, 104, 114, 102, 29, 93, 77 },
-    { 39, 28, 85, 171, 58, 165, 90, 98, 64 },
-    { 34, 22, 116, 206, 23, 34, 43, 166, 73 },
-    { 107, 54, 32, 26, 51, 1, 81, 43, 31 },
-    { 68, 25, 106, 22, 64, 171, 36, 225, 114 },
-    { 34, 19, 21, 102, 132, 188, 16, 76, 124 },
-    { 62, 18, 78, 95, 85, 57, 50, 48, 51 } },
-  { { 193, 101, 35, 159, 215, 111, 89, 46, 111 },
-    { 60, 148, 31, 172, 219, 228, 21, 18, 111 },
-    { 112, 113, 77, 85, 179, 255, 38, 120, 114 },
-    { 40, 42, 1, 196, 245, 209, 10, 25, 109 },
-    { 88, 43, 29, 140, 166, 213, 37, 43, 154 },
-    { 61, 63, 30, 155, 67, 45, 68, 1, 209 },
-    { 100, 80, 8, 43, 154, 1, 51, 26, 71 },
-    { 142, 78, 78, 16, 255, 128, 34, 197, 171 },
-    { 41, 40, 5, 102, 211, 183, 4, 1, 221 },
-    { 51, 50, 17, 168, 209, 192, 23, 25, 82 } },
-  { { 138, 31, 36, 171, 27, 166, 38, 44, 229 },
-    { 67, 87, 58, 169, 82, 115, 26, 59, 179 },
-    { 63, 59, 90, 180, 59, 166, 93, 73, 154 },
-    { 40, 40, 21, 116, 143, 209, 34, 39, 175 },
-    { 47, 15, 16, 183, 34, 223, 49, 45, 183 },
-    { 46, 17, 33, 183, 6, 98, 15, 32, 183 },
-    { 57, 46, 22, 24, 128, 1, 54, 17, 37 },
-    { 65, 32, 73, 115, 28, 128, 23, 128, 205 },
-    { 40, 3, 9, 115, 51, 192, 18, 6, 223 },
-    { 87, 37, 9, 115, 59, 77, 64, 21, 47 } },
-  { { 104, 55, 44, 218, 9, 54, 53, 130, 226 },
-    { 64, 90, 70, 205, 40, 41, 23, 26, 57 },
-    { 54, 57, 112, 184, 5, 41, 38, 166, 213 },
-    { 30, 34, 26, 133, 152, 116, 10, 32, 134 },
-    { 39, 19, 53, 221, 26, 114, 32, 73, 255 },
-    { 31, 9, 65, 234, 2, 15, 1, 118, 73 },
-    { 75, 32, 12, 51, 192, 255, 160, 43, 51 },
-    { 88, 31, 35, 67, 102, 85, 55, 186, 85 },
-    { 56, 21, 23, 111, 59, 205, 45, 37, 192 },
-    { 55, 38, 70, 124, 73, 102, 1, 34, 98 } },
-  { { 125, 98, 42, 88, 104, 85, 117, 175, 82 },
-    { 95, 84, 53, 89, 128, 100, 113, 101, 45 },
-    { 75, 79, 123, 47, 51, 128, 81, 171, 1 },
-    { 57, 17, 5, 71, 102, 57, 53, 41, 49 },
-    { 38, 33, 13, 121, 57, 73, 26, 1, 85 },
-    { 41, 10, 67, 138, 77, 110, 90, 47, 114 },
-    { 115, 21, 2, 10, 102, 255, 166, 23, 6 },
-    { 101, 29, 16, 10, 85, 128, 101, 196, 26 },
-    { 57, 18, 10, 102, 102, 213, 34, 20, 43 },
-    { 117, 20, 15, 36, 163, 128, 68, 1, 26 } },
-  { { 102, 61, 71, 37, 34, 53, 31, 243, 192 },
-    { 69, 60, 71, 38, 73, 119, 28, 222, 37 },
-    { 68, 45, 128, 34, 1, 47, 11, 245, 171 },
-    { 62, 17, 19, 70, 146, 85, 55, 62, 70 },
-    { 37, 43, 37, 154, 100, 163, 85, 160, 1 },
-    { 63, 9, 92, 136, 28, 64, 32, 201, 85 },
-    { 75, 15, 9, 9, 64, 255, 184, 119, 16 },
-    { 86, 6, 28, 5, 64, 255, 25, 248, 1 },
-    { 56, 8, 17, 132, 137, 255, 55, 116, 128 },
-    { 58, 15, 20, 82, 135, 57, 26, 121, 40 } },
-  { { 164, 50, 31, 137, 154, 133, 25, 35, 218 },
-    { 51, 103, 44, 131, 131, 123, 31, 6, 158 },
-    { 86, 40, 64, 135, 148, 224, 45, 183, 128 },
-    { 22, 26, 17, 131, 240, 154, 14, 1, 209 },
-    { 45, 16, 21, 91, 64, 222, 7, 1, 197 },
-    { 56, 21, 39, 155, 60, 138, 23, 102, 213 },
-    { 83, 12, 13, 54, 192, 255, 68, 47, 28 },
-    { 85, 26, 85, 85, 128, 128, 32, 146, 171 },
-    { 18, 11, 7, 63, 144, 171, 4, 4, 246 },
-    { 35, 27, 10, 146, 174, 171, 12, 26, 128 } },
-  { { 190, 80, 35, 99, 180, 80, 126, 54, 45 },
-    { 85, 126, 47, 87, 176, 51, 41, 20, 32 },
-    { 101, 75, 128, 139, 118, 146, 116, 128, 85 },
-    { 56, 41, 15, 176, 236, 85, 37, 9, 62 },
-    { 71, 30, 17, 119, 118, 255, 17, 18, 138 },
-    { 101, 38, 60, 138, 55, 70, 43, 26, 142 },
-    { 146, 36, 19, 30, 171, 255, 97, 27, 20 },
-    { 138, 45, 61, 62, 219, 1, 81, 188, 64 },
-    { 32, 41, 20, 117, 151, 142, 20, 21, 163 },
-    { 112, 19, 12, 61, 195, 128, 48, 4, 24 } }
-};
+    {{231, 120, 48, 89, 115, 113, 120, 152, 112},
+     {152, 179, 64, 126, 170, 118, 46, 70, 95},
+     {175, 69, 143, 80, 85, 82, 72, 155, 103},
+     {56, 58, 10, 171, 218, 189, 17, 13, 152},
+     {114, 26, 17, 163, 44, 195, 21, 10, 173},
+     {121, 24, 80, 195, 26, 62, 44, 64, 85},
+     {144, 71, 10, 38, 171, 213, 144, 34, 26},
+     {170, 46, 55, 19, 136, 160, 33, 206, 71},
+     {63, 20, 8, 114, 114, 208, 12, 9, 226},
+     {81, 40, 11, 96, 182, 84, 29, 16, 36}},
+    {{134, 183, 89, 137, 98, 101, 106, 165, 148},
+     {72, 187, 100, 130, 157, 111, 32, 75, 80},
+     {66, 102, 167, 99, 74, 62, 40, 234, 128},
+     {41, 53, 9, 178, 241, 141, 26, 8, 107},
+     {74, 43, 26, 146, 73, 166, 49, 23, 157},
+     {65, 38, 105, 160, 51, 52, 31, 115, 128},
+     {104, 79, 12, 27, 217, 255, 87, 17, 7},
+     {87, 68, 71, 44, 114, 51, 15, 186, 23},
+     {47, 41, 14, 110, 182, 183, 21, 17, 194},
+     {66, 45, 25, 102, 197, 189, 23, 18, 22}},
+    {{88, 88, 147, 150, 42, 46, 45, 196, 205},
+     {43, 97, 183, 117, 85, 38, 35, 179, 61},
+     {39, 53, 200, 87, 26, 21, 43, 232, 171},
+     {56, 34, 51, 104, 114, 102, 29, 93, 77},
+     {39, 28, 85, 171, 58, 165, 90, 98, 64},
+     {34, 22, 116, 206, 23, 34, 43, 166, 73},
+     {107, 54, 32, 26, 51, 1, 81, 43, 31},
+     {68, 25, 106, 22, 64, 171, 36, 225, 114},
+     {34, 19, 21, 102, 132, 188, 16, 76, 124},
+     {62, 18, 78, 95, 85, 57, 50, 48, 51}},
+    {{193, 101, 35, 159, 215, 111, 89, 46, 111},
+     {60, 148, 31, 172, 219, 228, 21, 18, 111},
+     {112, 113, 77, 85, 179, 255, 38, 120, 114},
+     {40, 42, 1, 196, 245, 209, 10, 25, 109},
+     {88, 43, 29, 140, 166, 213, 37, 43, 154},
+     {61, 63, 30, 155, 67, 45, 68, 1, 209},
+     {100, 80, 8, 43, 154, 1, 51, 26, 71},
+     {142, 78, 78, 16, 255, 128, 34, 197, 171},
+     {41, 40, 5, 102, 211, 183, 4, 1, 221},
+     {51, 50, 17, 168, 209, 192, 23, 25, 82}},
+    {{138, 31, 36, 171, 27, 166, 38, 44, 229},
+     {67, 87, 58, 169, 82, 115, 26, 59, 179},
+     {63, 59, 90, 180, 59, 166, 93, 73, 154},
+     {40, 40, 21, 116, 143, 209, 34, 39, 175},
+     {47, 15, 16, 183, 34, 223, 49, 45, 183},
+     {46, 17, 33, 183, 6, 98, 15, 32, 183},
+     {57, 46, 22, 24, 128, 1, 54, 17, 37},
+     {65, 32, 73, 115, 28, 128, 23, 128, 205},
+     {40, 3, 9, 115, 51, 192, 18, 6, 223},
+     {87, 37, 9, 115, 59, 77, 64, 21, 47}},
+    {{104, 55, 44, 218, 9, 54, 53, 130, 226},
+     {64, 90, 70, 205, 40, 41, 23, 26, 57},
+     {54, 57, 112, 184, 5, 41, 38, 166, 213},
+     {30, 34, 26, 133, 152, 116, 10, 32, 134},
+     {39, 19, 53, 221, 26, 114, 32, 73, 255},
+     {31, 9, 65, 234, 2, 15, 1, 118, 73},
+     {75, 32, 12, 51, 192, 255, 160, 43, 51},
+     {88, 31, 35, 67, 102, 85, 55, 186, 85},
+     {56, 21, 23, 111, 59, 205, 45, 37, 192},
+     {55, 38, 70, 124, 73, 102, 1, 34, 98}},
+    {{125, 98, 42, 88, 104, 85, 117, 175, 82},
+     {95, 84, 53, 89, 128, 100, 113, 101, 45},
+     {75, 79, 123, 47, 51, 128, 81, 171, 1},
+     {57, 17, 5, 71, 102, 57, 53, 41, 49},
+     {38, 33, 13, 121, 57, 73, 26, 1, 85},
+     {41, 10, 67, 138, 77, 110, 90, 47, 114},
+     {115, 21, 2, 10, 102, 255, 166, 23, 6},
+     {101, 29, 16, 10, 85, 128, 101, 196, 26},
+     {57, 18, 10, 102, 102, 213, 34, 20, 43},
+     {117, 20, 15, 36, 163, 128, 68, 1, 26}},
+    {{102, 61, 71, 37, 34, 53, 31, 243, 192},
+     {69, 60, 71, 38, 73, 119, 28, 222, 37},
+     {68, 45, 128, 34, 1, 47, 11, 245, 171},
+     {62, 17, 19, 70, 146, 85, 55, 62, 70},
+     {37, 43, 37, 154, 100, 163, 85, 160, 1},
+     {63, 9, 92, 136, 28, 64, 32, 201, 85},
+     {75, 15, 9, 9, 64, 255, 184, 119, 16},
+     {86, 6, 28, 5, 64, 255, 25, 248, 1},
+     {56, 8, 17, 132, 137, 255, 55, 116, 128},
+     {58, 15, 20, 82, 135, 57, 26, 121, 40}},
+    {{164, 50, 31, 137, 154, 133, 25, 35, 218},
+     {51, 103, 44, 131, 131, 123, 31, 6, 158},
+     {86, 40, 64, 135, 148, 224, 45, 183, 128},
+     {22, 26, 17, 131, 240, 154, 14, 1, 209},
+     {45, 16, 21, 91, 64, 222, 7, 1, 197},
+     {56, 21, 39, 155, 60, 138, 23, 102, 213},
+     {83, 12, 13, 54, 192, 255, 68, 47, 28},
+     {85, 26, 85, 85, 128, 128, 32, 146, 171},
+     {18, 11, 7, 63, 144, 171, 4, 4, 246},
+     {35, 27, 10, 146, 174, 171, 12, 26, 128}},
+    {{190, 80, 35, 99, 180, 80, 126, 54, 45},
+     {85, 126, 47, 87, 176, 51, 41, 20, 32},
+     {101, 75, 128, 139, 118, 146, 116, 128, 85},
+     {56, 41, 15, 176, 236, 85, 37, 9, 62},
+     {71, 30, 17, 119, 118, 255, 17, 18, 138},
+     {101, 38, 60, 138, 55, 70, 43, 26, 142},
+     {146, 36, 19, 30, 171, 255, 97, 27, 20},
+     {138, 45, 61, 62, 219, 1, 81, 188, 64},
+     {32, 41, 20, 117, 151, 142, 20, 21, 163},
+     {112, 19, 12, 61, 195, 128, 48, 4, 24}}};

 void VP8ResetProba(VP8Proba* const proba) {
-  memset(proba->segments_, 255u, sizeof(proba->segments_));
-  // proba->bands_[][] is initialized later
+  WEBP_UNSAFE_MEMSET(proba->segments, 255u, sizeof(proba->segments));
+  // proba->bands[][] is initialized later
 }

-static void ParseIntraMode(VP8BitReader* const br,
-                           VP8Decoder* const dec, int mb_x) {
-  uint8_t* const top = dec->intra_t_ + 4 * mb_x;
-  uint8_t* const left = dec->intra_l_;
-  VP8MBData* const block = dec->mb_data_ + mb_x;
+static void ParseIntraMode(VP8BitReader* const br, VP8Decoder* const dec,
+                           int mb_x) {
+  uint8_t* const top = dec->intra_t + 4 * mb_x;
+  uint8_t* const left = dec->intra_l;
+  VP8MBData* const block = dec->mb_data + mb_x;

  // Note: we don't save segment map (yet), as we don't expect
  // to decode more than 1 keyframe.
-  if (dec->segment_hdr_.update_map_) {
+  if (dec->segment_hdr.update_map) {
    // Hardcoded tree parsing
-    block->segment_ = !VP8GetBit(br, dec->proba_.segments_[0], "segments")
-                    ?  VP8GetBit(br, dec->proba_.segments_[1], "segments")
-                    :  VP8GetBit(br, dec->proba_.segments_[2], "segments") + 2;
+    block->segment =
+        !VP8GetBit(br, dec->proba.segments[0], "segments")
+            ? VP8GetBit(br, dec->proba.segments[1], "segments")
+            : VP8GetBit(br, dec->proba.segments[2], "segments") + 2;
  } else {
-    block->segment_ = 0;  // default for intra
+    block->segment = 0;  // default for intra
  }
-  if (dec->use_skip_proba_) block->skip_ = VP8GetBit(br, dec->skip_p_, "skip");
+  if (dec->use_skip_proba) block->skip = VP8GetBit(br, dec->skip_p, "skip");

-  block->is_i4x4_ = !VP8GetBit(br, 145, "block-size");
-  if (!block->is_i4x4_) {
+  block->is_i4x4 = !VP8GetBit(br, 145, "block-size");
+  if (!block->is_i4x4) {
    // Hardcoded 16x16 intra-mode decision tree.
    const int ymode =
-        VP8GetBit(br, 156, "pred-modes") ?
-            (VP8GetBit(br, 128, "pred-modes") ? TM_PRED : H_PRED) :
-            (VP8GetBit(br, 163, "pred-modes") ? V_PRED : DC_PRED);
-    block->imodes_[0] = ymode;
-    memset(top, ymode, 4 * sizeof(*top));
-    memset(left, ymode, 4 * sizeof(*left));
+        VP8GetBit(br, 156, "pred-modes")
+            ? (VP8GetBit(br, 128, "pred-modes") ? TM_PRED : H_PRED)
+            : (VP8GetBit(br, 163, "pred-modes") ? V_PRED : DC_PRED);
+    block->imodes[0] = ymode;
+    WEBP_UNSAFE_MEMSET(top, ymode, 4 * sizeof(*top));
+    WEBP_UNSAFE_MEMSET(left, ymode, 4 * sizeof(*left));
  } else {
-    uint8_t* modes = block->imodes_;
+    uint8_t* modes = block->imodes;
    int y;
    for (y = 0; y < 4; ++y) {
      int ymode = left[y];
@@ -333,38 +299,43 @@ static void ParseIntraMode(VP8BitReader* const br,
        ymode = -i;
 #else
        // Hardcoded tree parsing
-        ymode = !VP8GetBit(br, prob[0], "pred-modes") ? B_DC_PRED :
-                  !VP8GetBit(br, prob[1], "pred-modes") ? B_TM_PRED :
-                    !VP8GetBit(br, prob[2], "pred-modes") ? B_VE_PRED :
-                      !VP8GetBit(br, prob[3], "pred-modes") ?
-                        (!VP8GetBit(br, prob[4], "pred-modes") ? B_HE_PRED :
-                          (!VP8GetBit(br, prob[5], "pred-modes") ? B_RD_PRED
-                                                                 : B_VR_PRED)) :
-                        (!VP8GetBit(br, prob[6], "pred-modes") ? B_LD_PRED :
-                          (!VP8GetBit(br, prob[7], "pred-modes") ? B_VL_PRED :
-                            (!VP8GetBit(br, prob[8], "pred-modes") ? B_HD_PRED
-                                                                   : B_HU_PRED))
-                        );
+        ymode =
+            !VP8GetBit(br, prob[0], "pred-modes")   ? B_DC_PRED
+            : !VP8GetBit(br, prob[1], "pred-modes") ? B_TM_PRED
+            : !VP8GetBit(br, prob[2], "pred-modes") ? B_VE_PRED
+            : !VP8GetBit(br, prob[3], "pred-modes")
+                ? (!VP8GetBit(br, prob[4], "pred-modes")
+                       ? B_HE_PRED
+                       : (!VP8GetBit(br, prob[5], "pred-modes") ? B_RD_PRED
+                                                                : B_VR_PRED))
+                : (!VP8GetBit(br, prob[6], "pred-modes")
+                       ? B_LD_PRED
+                       : (!VP8GetBit(br, prob[7], "pred-modes")
+                              ? B_VL_PRED
+                              : (!VP8GetBit(br, prob[8], "pred-modes")
+                                     ? B_HD_PRED
+                                     : B_HU_PRED)));
 #endif  // USE_GENERIC_TREE
        top[x] = ymode;
      }
-      memcpy(modes, top, 4 * sizeof(*top));
+      WEBP_UNSAFE_MEMCPY(modes, top, 4 * sizeof(*top));
      modes += 4;
      left[y] = ymode;
    }
  }
  // Hardcoded UVMode decision tree
-  block->uvmode_ = !VP8GetBit(br, 142, "pred-modes-uv") ? DC_PRED
-                 : !VP8GetBit(br, 114, "pred-modes-uv") ? V_PRED
-                 : VP8GetBit(br, 183, "pred-modes-uv") ? TM_PRED : H_PRED;
+  block->uvmode = !VP8GetBit(br, 142, "pred-modes-uv")   ? DC_PRED
+                  : !VP8GetBit(br, 114, "pred-modes-uv") ? V_PRED
+                  : VP8GetBit(br, 183, "pred-modes-uv")  ? TM_PRED
+                                                         : H_PRED;
 }

 int VP8ParseIntraModeRow(VP8BitReader* const br, VP8Decoder* const dec) {
  int mb_x;
-  for (mb_x = 0; mb_x < dec->mb_w_; ++mb_x) {
+  for (mb_x = 0; mb_x < dec->mb_w; ++mb_x) {
    ParseIntraMode(br, dec, mb_x);
  }
-  return !dec->br_.eof_;
+  return !dec->br.eof;
 }

 //------------------------------------------------------------------------------
@@ -372,168 +343,131 @@ int VP8ParseIntraModeRow(VP8BitReader* const br, VP8Decoder* const dec) {

 static const uint8_t
    CoeffsUpdateProba[NUM_TYPES][NUM_BANDS][NUM_CTX][NUM_PROBAS] = {
-  { { { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
-      { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
-      { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
-    },
-    { { 176, 246, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
-      { 223, 241, 252, 255, 255, 255, 255, 255, 255, 255, 255 },
-      { 249, 253, 253, 255, 255, 255, 255, 255, 255, 255, 255 }
-    },
-    { { 255, 244, 252, 255, 255, 255, 255, 255, 255, 255, 255 },
-      { 234, 254, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
-      { 253, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
-    },
-    { { 255, 246, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
-      { 239, 253, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
-      { 254, 255, 254, 255, 255, 255, 255, 255, 255, 255, 255 }
-    },
-    { { 255, 248, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
-      { 251, 255, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
-      { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
-    },
-    { { 255, 253, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
-      { 251, 254, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
-      { 254, 255, 254, 255, 255, 255, 255, 255, 255, 255, 255 }
-    },
-    { { 255, 254, 253, 255, 254, 255, 255, 255, 255, 255, 255 },
-      { 250, 255, 254, 255, 254, 255, 255, 255, 255, 255, 255 },
-      { 254, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
-    },
-    { { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
-      { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
-      { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
-    }
-  },
-  { { { 217, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
-      { 225, 252, 241, 253, 255, 255, 254, 255, 255, 255, 255 },
-      { 234, 250, 241, 250, 253, 255, 253, 254, 255, 255, 255 }
-    },
-    { { 255, 254, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
-      { 223, 254, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
-      { 238, 253, 254, 254, 255, 255, 255, 255, 255, 255, 255 }
-    },
-    { { 255, 248, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
-      { 249, 254, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
-      { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
-    },
-    { { 255, 253, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
-      { 247, 254, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
-      { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
-    },
-    { { 255, 253, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
-      { 252, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
-      { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
-    },
-    { { 255, 254, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
-      { 253, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
-      { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
-    },
-    { { 255, 254, 253, 255, 255, 255, 255, 255, 255, 255, 255 },
-      { 250, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
-      { 254, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
-    },
-    { { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
-      { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
-      { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
-    }
-  },
-  { { { 186, 251, 250, 255, 255, 255, 255, 255, 255, 255, 255 },
-      { 234, 251, 244, 254, 255, 255, 255, 255, 255, 255, 255 },
-      { 251, 251, 243, 253, 254, 255, 254, 255, 255, 255, 255 }
-    },
-    { { 255, 253, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
-      { 236, 253, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
-      { 251, 253, 253, 254, 254, 255, 255, 255, 255, 255, 255 }
-    },
-    { { 255, 254, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
-      { 254, 254, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
-      { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
-    },
-    { { 255, 254, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
-      { 254, 254, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
-      { 254, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
-    },
-    { { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
-      { 254, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
-      { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
-    },
-    { { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
-      { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
-      { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
-    },
-    { { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
-      { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
-      { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
-    },
-    { { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
-      { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
-      { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
-    }
-  },
-  { { { 248, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
-      { 250, 254, 252, 254, 255, 255, 255, 255, 255, 255, 255 },
-      { 248, 254, 249, 253, 255, 255, 255, 255, 255, 255, 255 }
-    },
-    { { 255, 253, 253, 255, 255, 255, 255, 255, 255, 255, 255 },
-      { 246, 253, 253, 255, 255, 255, 255, 255, 255, 255, 255 },
-      { 252, 254, 251, 254, 254, 255, 255, 255, 255, 255, 255 }
-    },
-    { { 255, 254, 252, 255, 255, 255, 255, 255, 255, 255, 255 },
-      { 248, 254, 253, 255, 255, 255, 255, 255, 255, 255, 255 },
-      { 253, 255, 254, 254, 255, 255, 255, 255, 255, 255, 255 }
-    },
-    { { 255, 251, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
-      { 245, 251, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
-      { 253, 253, 254, 255, 255, 255, 255, 255, 255, 255, 255 }
-    },
-    { { 255, 251, 253, 255, 255, 255, 255, 255, 255, 255, 255 },
-      { 252, 253, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
-      { 255, 254, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
-    },
-    { { 255, 252, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
-      { 249, 255, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
-      { 255, 255, 254, 255, 255, 255, 255, 255, 255, 255, 255 }
-    },
-    { { 255, 255, 253, 255, 255, 255, 255, 255, 255, 255, 255 },
-      { 250, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
-      { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
-    },
-    { { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
-      { 254, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
-      { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
-    }
-  }
-};
+        {{{255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255},
+          {255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255},
+          {255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255}},
+         {{176, 246, 255, 255, 255, 255, 255, 255, 255, 255, 255},
+          {223, 241, 252, 255, 255, 255, 255, 255, 255, 255, 255},
+          {249, 253, 253, 255, 255, 255, 255, 255, 255, 255, 255}},
+         {{255, 244, 252, 255, 255, 255, 255, 255, 255, 255, 255},
+          {234, 254, 254, 255, 255, 255, 255, 255, 255, 255, 255},
+          {253, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255}},
+         {{255, 246, 254, 255, 255, 255, 255, 255, 255, 255, 255},
+          {239, 253, 254, 255, 255, 255, 255, 255, 255, 255, 255},
+          {254, 255, 254, 255, 255, 255, 255, 255, 255, 255, 255}},
+         {{255, 248, 254, 255, 255, 255, 255, 255, 255, 255, 255},
+          {251, 255, 254, 255, 255, 255, 255, 255, 255, 255, 255},
+          {255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255}},
+         {{255, 253, 254, 255, 255, 255, 255, 255, 255, 255, 255},
+          {251, 254, 254, 255, 255, 255, 255, 255, 255, 255, 255},
+          {254, 255, 254, 255, 255, 255, 255, 255, 255, 255, 255}},
+         {{255, 254, 253, 255, 254, 255, 255, 255, 255, 255, 255},
+          {250, 255, 254, 255, 254, 255, 255, 255, 255, 255, 255},
+          {254, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255}},
+         {{255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255},
+          {255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255},
+          {255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255}}},
+        {{{217, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255},
+          {225, 252, 241, 253, 255, 255, 254, 255, 255, 255, 255},
+          {234, 250, 241, 250, 253, 255, 253, 254, 255, 255, 255}},
+         {{255, 254, 255, 255, 255, 255, 255, 255, 255, 255, 255},
+          {223, 254, 254, 255, 255, 255, 255, 255, 255, 255, 255},
+          {238, 253, 254, 254, 255, 255, 255, 255, 255, 255, 255}},
+         {{255, 248, 254, 255, 255, 255, 255, 255, 255, 255, 255},
+          {249, 254, 255, 255, 255, 255, 255, 255, 255, 255, 255},
+          {255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255}},
+         {{255, 253, 255, 255, 255, 255, 255, 255, 255, 255, 255},
+          {247, 254, 255, 255, 255, 255, 255, 255, 255, 255, 255},
+          {255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255}},
+         {{255, 253, 254, 255, 255, 255, 255, 255, 255, 255, 255},
+          {252, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255},
+          {255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255}},
+         {{255, 254, 254, 255, 255, 255, 255, 255, 255, 255, 255},
+          {253, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255},
+          {255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255}},
+         {{255, 254, 253, 255, 255, 255, 255, 255, 255, 255, 255},
+          {250, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255},
+          {254, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255}},
+         {{255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255},
+          {255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255},
+          {255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255}}},
+        {{{186, 251, 250, 255, 255, 255, 255, 255, 255, 255, 255},
+          {234, 251, 244, 254, 255, 255, 255, 255, 255, 255, 255},
+          {251, 251, 243, 253, 254, 255, 254, 255, 255, 255, 255}},
+         {{255, 253, 254, 255, 255, 255, 255, 255, 255, 255, 255},
+          {236, 253, 254, 255, 255, 255, 255, 255, 255, 255, 255},
+          {251, 253, 253, 254, 254, 255, 255, 255, 255, 255, 255}},
+         {{255, 254, 254, 255, 255, 255, 255, 255, 255, 255, 255},
+          {254, 254, 254, 255, 255, 255, 255, 255, 255, 255, 255},
+          {255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255}},
+         {{255, 254, 255, 255, 255, 255, 255, 255, 255, 255, 255},
+          {254, 254, 255, 255, 255, 255, 255, 255, 255, 255, 255},
+          {254, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255}},
+         {{255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255},
+          {254, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255},
+          {255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255}},
+         {{255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255},
+          {255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255},
+          {255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255}},
+         {{255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255},
+          {255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255},
+          {255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255}},
+         {{255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255},
+          {255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255},
+          {255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255}}},
+        {{{248, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255},
+          {250, 254, 252, 254, 255, 255, 255, 255, 255, 255, 255},
+          {248, 254, 249, 253, 255, 255, 255, 255, 255, 255, 255}},
+         {{255, 253, 253, 255, 255, 255, 255, 255, 255, 255, 255},
+          {246, 253, 253, 255, 255, 255, 255, 255, 255, 255, 255},
+          {252, 254, 251, 254, 254, 255, 255, 255, 255, 255, 255}},
+         {{255, 254, 252, 255, 255, 255, 255, 255, 255, 255, 255},
+          {248, 254, 253, 255, 255, 255, 255, 255, 255, 255, 255},
+          {253, 255, 254, 254, 255, 255, 255, 255, 255, 255, 255}},
+         {{255, 251, 254, 255, 255, 255, 255, 255, 255, 255, 255},
+          {245, 251, 254, 255, 255, 255, 255, 255, 255, 255, 255},
+          {253, 253, 254, 255, 255, 255, 255, 255, 255, 255, 255}},
+         {{255, 251, 253, 255, 255, 255, 255, 255, 255, 255, 255},
+          {252, 253, 254, 255, 255, 255, 255, 255, 255, 255, 255},
+          {255, 254, 255, 255, 255, 255, 255, 255, 255, 255, 255}},
+         {{255, 252, 255, 255, 255, 255, 255, 255, 255, 255, 255},
+          {249, 255, 254, 255, 255, 255, 255, 255, 255, 255, 255},
+          {255, 255, 254, 255, 255, 255, 255, 255, 255, 255, 255}},
+         {{255, 255, 253, 255, 255, 255, 255, 255, 255, 255, 255},
+          {250, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255},
+          {255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255}},
+         {{255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255},
+          {254, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255},
+          {255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255}}}};

 // Paragraph 9.9

 static const uint8_t kBands[16 + 1] = {
-  0, 1, 2, 3, 6, 4, 5, 6, 6, 6, 6, 6, 6, 6, 6, 7,
-  0  // extra entry as sentinel
+    0, 1, 2, 3, 6, 4, 5, 6, 6, 6, 6, 6, 6, 6, 6, 7,
+    0  // extra entry as sentinel
 };

 void VP8ParseProba(VP8BitReader* const br, VP8Decoder* const dec) {
-  VP8Proba* const proba = &dec->proba_;
+  VP8Proba* const proba = &dec->proba;
  int t, b, c, p;
  for (t = 0; t < NUM_TYPES; ++t) {
    for (b = 0; b < NUM_BANDS; ++b) {
      for (c = 0; c < NUM_CTX; ++c) {
        for (p = 0; p < NUM_PROBAS; ++p) {
          const int v =
-              VP8GetBit(br, CoeffsUpdateProba[t][b][c][p], "global-header") ?
-                        VP8GetValue(br, 8, "global-header") :
-                        CoeffsProba0[t][b][c][p];
-          proba->bands_[t][b].probas_[c][p] = v;
+              VP8GetBit(br, CoeffsUpdateProba[t][b][c][p], "global-header")
+                  ? VP8GetValue(br, 8, "global-header")
+                  : CoeffsProba0[t][b][c][p];
+          proba->bands[t][b].probas[c][p] = v;
        }
      }
    }
    for (b = 0; b < 16 + 1; ++b) {
-      proba->bands_ptr_[t][b] = &proba->bands_[t][kBands[b]];
+      proba->bands_ptr[t][b] = &proba->bands[t][kBands[b]];
    }
  }
-  dec->use_skip_proba_ = VP8Get(br, "global-header");
-  if (dec->use_skip_proba_) {
-    dec->skip_p_ = VP8GetValue(br, 8, "global-header");
+  dec->use_skip_proba = VP8Get(br, "global-header");
+  if (dec->use_skip_proba) {
+    dec->skip_p = VP8GetValue(br, 8, "global-header");
  }
 }
--- a/src/dec/vp8_dec.c
+++ b/src/dec/vp8_dec.c
@@ -11,14 +11,28 @@
 //
 // Author: Skal (pascal.massimino@gmail.com)

+#include "src/dec/vp8_dec.h"
+
+#include <assert.h>
 #include <stdlib.h>
+#include <string.h>

 #include "src/dec/alphai_dec.h"
+#include "src/dec/common_dec.h"
 #include "src/dec/vp8i_dec.h"
 #include "src/dec/vp8li_dec.h"
 #include "src/dec/webpi_dec.h"
+#include "src/dsp/cpu.h"
+#include "src/dsp/dsp.h"
 #include "src/utils/bit_reader_inl_utils.h"
+#include "src/utils/bit_reader_utils.h"
+#include "src/utils/thread_utils.h"
 #include "src/utils/utils.h"
+#include "src/webp/decode.h"
+#include "src/webp/format_constants.h"
+#include "src/webp/types.h"
+
+WEBP_ASSUME_UNSAFE_INDEXABLE_ABI

 //------------------------------------------------------------------------------

@@ -30,8 +44,8 @@ int WebPGetDecoderVersion(void) {
 // Signature and pointer-to-function for GetCoeffs() variants below.

 typedef int (*GetCoeffsFunc)(VP8BitReader* const br,
-                             const VP8BandProbas* const prob[],
-                             int ctx, const quant_t dq, int n, int16_t* out);
+                             const VP8BandProbas* const prob[], int ctx,
+                             const quant_t dq, int n, int16_t* out);
 static volatile GetCoeffsFunc GetCoeffs = NULL;

 static void InitGetCoeffs(void);
@@ -40,8 +54,8 @@ static void InitGetCoeffs(void);
 // VP8Decoder

 static void SetOk(VP8Decoder* const dec) {
-  dec->status_ = VP8_STATUS_OK;
-  dec->error_msg_ = "OK";
+  dec->status = VP8_STATUS_OK;
+  dec->error_msg = "OK";
 }

 int VP8InitIoInternal(VP8Io* const io, int version) {
@@ -49,7 +63,7 @@ int VP8InitIoInternal(VP8Io* const io, int version) {
    return 0;  // mismatch error
  }
  if (io != NULL) {
-    memset(io, 0, sizeof(*io));
+    WEBP_UNSAFE_MEMSET(io, 0, sizeof(*io));
  }
  return 1;
 }
@@ -58,9 +72,9 @@ VP8Decoder* VP8New(void) {
  VP8Decoder* const dec = (VP8Decoder*)WebPSafeCalloc(1ULL, sizeof(*dec));
  if (dec != NULL) {
    SetOk(dec);
-    WebPGetWorkerInterface()->Init(&dec->worker_);
-    dec->ready_ = 0;
-    dec->num_parts_minus_one_ = 0;
+    WebPGetWorkerInterface()->Init(&dec->worker);
+    dec->ready = 0;
+    dec->num_parts_minus_one = 0;
    InitGetCoeffs();
  }
  return dec;
@@ -68,13 +82,13 @@ VP8Decoder* VP8New(void) {

 VP8StatusCode VP8Status(VP8Decoder* const dec) {
  if (!dec) return VP8_STATUS_INVALID_PARAM;
-  return dec->status_;
+  return dec->status;
 }

 const char* VP8StatusMessage(VP8Decoder* const dec) {
  if (dec == NULL) return "no object";
-  if (!dec->error_msg_) return "OK";
-  return dec->error_msg_;
+  if (!dec->error_msg) return "OK";
+  return dec->error_msg;
 }

 void VP8Delete(VP8Decoder* const dec) {
@@ -84,55 +98,56 @@ void VP8Delete(VP8Decoder* const dec) {
  }
 }

-int VP8SetError(VP8Decoder* const dec,
-                VP8StatusCode error, const char* const msg) {
+int VP8SetError(VP8Decoder* const dec, VP8StatusCode error,
+                const char* const msg) {
  // VP8_STATUS_SUSPENDED is only meaningful in incremental decoding.
-  assert(dec->incremental_ || error != VP8_STATUS_SUSPENDED);
+  assert(dec->incremental || error != VP8_STATUS_SUSPENDED);
  // The oldest error reported takes precedence over the new one.
-  if (dec->status_ == VP8_STATUS_OK) {
-    dec->status_ = error;
-    dec->error_msg_ = msg;
-    dec->ready_ = 0;
+  if (dec->status == VP8_STATUS_OK) {
+    dec->status = error;
+    dec->error_msg = msg;
+    dec->ready = 0;
  }
  return 0;
 }

 //------------------------------------------------------------------------------

-int VP8CheckSignature(const uint8_t* const data, size_t data_size) {
-  return (data_size >= 3 &&
-          data[0] == 0x9d && data[1] == 0x01 && data[2] == 0x2a);
+int VP8CheckSignature(const uint8_t* const WEBP_COUNTED_BY(data_size) data,
+                      size_t data_size) {
+  return (data_size >= 3 && data[0] == 0x9d && data[1] == 0x01 &&
+          data[2] == 0x2a);
 }

-int VP8GetInfo(const uint8_t* data, size_t data_size, size_t chunk_size,
-               int* const width, int* const height) {
+int VP8GetInfo(const uint8_t* WEBP_COUNTED_BY(data_size) data, size_t data_size,
+               size_t chunk_size, int* const width, int* const height) {
  if (data == NULL || data_size < VP8_FRAME_HEADER_SIZE) {
-    return 0;         // not enough data
+    return 0;  // not enough data
  }
  // check signature
  if (!VP8CheckSignature(data + 3, data_size - 3)) {
-    return 0;         // Wrong signature.
+    return 0;  // Wrong signature.
  } else {
    const uint32_t bits = data[0] | (data[1] << 8) | (data[2] << 16);
    const int key_frame = !(bits & 1);
    const int w = ((data[7] << 8) | data[6]) & 0x3fff;
    const int h = ((data[9] << 8) | data[8]) & 0x3fff;

-    if (!key_frame) {   // Not a keyframe.
+    if (!key_frame) {  // Not a keyframe.
      return 0;
    }

    if (((bits >> 1) & 7) > 3) {
-      return 0;         // unknown profile
+      return 0;  // unknown profile
    }
    if (!((bits >> 4) & 1)) {
-      return 0;         // first frame is invisible!
+      return 0;  // first frame is invisible!
    }
    if (((bits >> 5)) >= chunk_size) {  // partition_length
-      return 0;         // inconsistent size information.
+      return 0;                         // inconsistent size information.
    }
    if (w == 0 || h == 0) {
-      return 0;         // We don't support both width and height to be zero.
+      return 0;  // We don't support both width and height to be zero.
    }

    if (width) {
@@ -151,44 +166,48 @@ int VP8GetInfo(const uint8_t* data, size_t data_size, size_t chunk_size,

 static void ResetSegmentHeader(VP8SegmentHeader* const hdr) {
  assert(hdr != NULL);
-  hdr->use_segment_ = 0;
-  hdr->update_map_ = 0;
-  hdr->absolute_delta_ = 1;
-  memset(hdr->quantizer_, 0, sizeof(hdr->quantizer_));
-  memset(hdr->filter_strength_, 0, sizeof(hdr->filter_strength_));
+  hdr->use_segment = 0;
+  hdr->update_map = 0;
+  hdr->absolute_delta = 1;
+  WEBP_UNSAFE_MEMSET(hdr->quantizer, 0, sizeof(hdr->quantizer));
+  WEBP_UNSAFE_MEMSET(hdr->filter_strength, 0, sizeof(hdr->filter_strength));
 }

 // Paragraph 9.3
-static int ParseSegmentHeader(VP8BitReader* br,
-                              VP8SegmentHeader* hdr, VP8Proba* proba) {
+static int ParseSegmentHeader(VP8BitReader* br, VP8SegmentHeader* hdr,
+                              VP8Proba* proba) {
  assert(br != NULL);
  assert(hdr != NULL);
-  hdr->use_segment_ = VP8Get(br, "global-header");
-  if (hdr->use_segment_) {
-    hdr->update_map_ = VP8Get(br, "global-header");
-    if (VP8Get(br, "global-header")) {   // update data
+  hdr->use_segment = VP8Get(br, "global-header");
+  if (hdr->use_segment) {
+    hdr->update_map = VP8Get(br, "global-header");
+    if (VP8Get(br, "global-header")) {  // update data
      int s;
-      hdr->absolute_delta_ = VP8Get(br, "global-header");
+      hdr->absolute_delta = VP8Get(br, "global-header");
      for (s = 0; s < NUM_MB_SEGMENTS; ++s) {
-        hdr->quantizer_[s] = VP8Get(br, "global-header") ?
-            VP8GetSignedValue(br, 7, "global-header") : 0;
+        hdr->quantizer[s] = VP8Get(br, "global-header")
+                                ? VP8GetSignedValue(br, 7, "global-header")
+                                : 0;
      }
      for (s = 0; s < NUM_MB_SEGMENTS; ++s) {
-        hdr->filter_strength_[s] = VP8Get(br, "global-header") ?
-            VP8GetSignedValue(br, 6, "global-header") : 0;
+        hdr->filter_strength[s] =
+            VP8Get(br, "global-header")
+                ? VP8GetSignedValue(br, 6, "global-header")
+                : 0;
      }
    }
-    if (hdr->update_map_) {
+    if (hdr->update_map) {
      int s;
      for (s = 0; s < MB_FEATURE_TREE_PROBS; ++s) {
-        proba->segments_[s] = VP8Get(br, "global-header") ?
-            VP8GetValue(br, 8, "global-header") : 255u;
+        proba->segments[s] = VP8Get(br, "global-header")
+                                 ? VP8GetValue(br, 8, "global-header")
+                                 : 255u;
      }
    }
  } else {
-    hdr->update_map_ = 0;
+    hdr->update_map = 0;
  }
-  return !br->eof_;
+  return !br->eof;
 }

 // Paragraph 9.5
@@ -201,17 +220,18 @@ static int ParseSegmentHeader(VP8BitReader* br,
 // is returned, and this is an unrecoverable error.
 // If the partitions were positioned ok, VP8_STATUS_OK is returned.
 static VP8StatusCode ParsePartitions(VP8Decoder* const dec,
-                                     const uint8_t* buf, size_t size) {
-  VP8BitReader* const br = &dec->br_;
-  const uint8_t* sz = buf;
+                                     const uint8_t* WEBP_COUNTED_BY(size) buf,
+                                     size_t size) {
+  VP8BitReader* const br = &dec->br;
+  const uint8_t* WEBP_BIDI_INDEXABLE sz = buf;
  const uint8_t* buf_end = buf + size;
-  const uint8_t* part_start;
+  const uint8_t* WEBP_BIDI_INDEXABLE part_start;
  size_t size_left = size;
  size_t last_part;
  size_t p;

-  dec->num_parts_minus_one_ = (1 << VP8GetValue(br, 2, "global-header")) - 1;
-  last_part = dec->num_parts_minus_one_;
+  dec->num_parts_minus_one = (1 << VP8GetValue(br, 2, "global-header")) - 1;
+  last_part = dec->num_parts_minus_one;
  if (size < 3 * last_part) {
    // we can't even read the sizes with sz[]! That's a failure.
    return VP8_STATUS_NOT_ENOUGH_DATA;
@@ -221,48 +241,48 @@ static VP8StatusCode ParsePartitions(VP8Decoder* const dec,
  for (p = 0; p < last_part; ++p) {
    size_t psize = sz[0] | (sz[1] << 8) | (sz[2] << 16);
    if (psize > size_left) psize = size_left;
-    VP8InitBitReader(dec->parts_ + p, part_start, psize);
+    VP8InitBitReader(dec->parts + p, part_start, psize);
    part_start += psize;
    size_left -= psize;
    sz += 3;
  }
-  VP8InitBitReader(dec->parts_ + last_part, part_start, size_left);
+  VP8InitBitReader(dec->parts + last_part, part_start, size_left);
  if (part_start < buf_end) return VP8_STATUS_OK;
-  return dec->incremental_
+  return dec->incremental
             ? VP8_STATUS_SUSPENDED  // Init is ok, but there's not enough data
             : VP8_STATUS_NOT_ENOUGH_DATA;
 }

 // Paragraph 9.4
 static int ParseFilterHeader(VP8BitReader* br, VP8Decoder* const dec) {
-  VP8FilterHeader* const hdr = &dec->filter_hdr_;
-  hdr->simple_    = VP8Get(br, "global-header");
-  hdr->level_     = VP8GetValue(br, 6, "global-header");
-  hdr->sharpness_ = VP8GetValue(br, 3, "global-header");
-  hdr->use_lf_delta_ = VP8Get(br, "global-header");
-  if (hdr->use_lf_delta_) {
-    if (VP8Get(br, "global-header")) {   // update lf-delta?
+  VP8FilterHeader* const hdr = &dec->filter_hdr;
+  hdr->simple = VP8Get(br, "global-header");
+  hdr->level = VP8GetValue(br, 6, "global-header");
+  hdr->sharpness = VP8GetValue(br, 3, "global-header");
+  hdr->use_lf_delta = VP8Get(br, "global-header");
+  if (hdr->use_lf_delta) {
+    if (VP8Get(br, "global-header")) {  // update lf-delta?
      int i;
      for (i = 0; i < NUM_REF_LF_DELTAS; ++i) {
        if (VP8Get(br, "global-header")) {
-          hdr->ref_lf_delta_[i] = VP8GetSignedValue(br, 6, "global-header");
+          hdr->ref_lf_delta[i] = VP8GetSignedValue(br, 6, "global-header");
        }
      }
      for (i = 0; i < NUM_MODE_LF_DELTAS; ++i) {
        if (VP8Get(br, "global-header")) {
-          hdr->mode_lf_delta_[i] = VP8GetSignedValue(br, 6, "global-header");
+          hdr->mode_lf_delta[i] = VP8GetSignedValue(br, 6, "global-header");
        }
      }
    }
  }
-  dec->filter_type_ = (hdr->level_ == 0) ? 0 : hdr->simple_ ? 1 : 2;
-  return !br->eof_;
+  dec->filter_type = (hdr->level == 0) ? 0 : hdr->simple ? 1 : 2;
+  return !br->eof;
 }

 // Topmost call
 int VP8GetHeaders(VP8Decoder* const dec, VP8Io* const io) {
-  const uint8_t* buf;
  size_t buf_size;
+  const uint8_t* WEBP_COUNTED_BY(buf_size) buf;
  VP8FrameHeader* frm_hdr;
  VP8PictureHeader* pic_hdr;
  VP8BitReader* br;
@@ -276,26 +296,26 @@ int VP8GetHeaders(VP8Decoder* const dec, VP8Io* const io) {
    return VP8SetError(dec, VP8_STATUS_INVALID_PARAM,
                       "null VP8Io passed to VP8GetHeaders()");
  }
-  buf = io->data;
  buf_size = io->data_size;
+  buf =
+      WEBP_UNSAFE_FORGE_BIDI_INDEXABLE(const uint8_t*, io->data, io->data_size);
  if (buf_size < 4) {
-    return VP8SetError(dec, VP8_STATUS_NOT_ENOUGH_DATA,
-                       "Truncated header.");
+    return VP8SetError(dec, VP8_STATUS_NOT_ENOUGH_DATA, "Truncated header.");
  }

  // Paragraph 9.1
  {
    const uint32_t bits = buf[0] | (buf[1] << 8) | (buf[2] << 16);
-    frm_hdr = &dec->frm_hdr_;
-    frm_hdr->key_frame_ = !(bits & 1);
-    frm_hdr->profile_ = (bits >> 1) & 7;
-    frm_hdr->show_ = (bits >> 4) & 1;
-    frm_hdr->partition_length_ = (bits >> 5);
-    if (frm_hdr->profile_ > 3) {
+    frm_hdr = &dec->frm_hdr;
+    frm_hdr->key_frame = !(bits & 1);
+    frm_hdr->profile = (bits >> 1) & 7;
+    frm_hdr->show = (bits >> 4) & 1;
+    frm_hdr->partition_length = (bits >> 5);
+    if (frm_hdr->profile > 3) {
      return VP8SetError(dec, VP8_STATUS_BITSTREAM_ERROR,
                         "Incorrect keyframe parameters.");
    }
-    if (!frm_hdr->show_) {
+    if (!frm_hdr->show) {
      return VP8SetError(dec, VP8_STATUS_UNSUPPORTED_FEATURE,
                         "Frame not displayable.");
    }
@@ -303,66 +323,64 @@ int VP8GetHeaders(VP8Decoder* const dec, VP8Io* const io) {
    buf_size -= 3;
  }

-  pic_hdr = &dec->pic_hdr_;
-  if (frm_hdr->key_frame_) {
+  pic_hdr = &dec->pic_hdr;
+  if (frm_hdr->key_frame) {
    // Paragraph 9.2
    if (buf_size < 7) {
      return VP8SetError(dec, VP8_STATUS_NOT_ENOUGH_DATA,
                         "cannot parse picture header");
    }
    if (!VP8CheckSignature(buf, buf_size)) {
-      return VP8SetError(dec, VP8_STATUS_BITSTREAM_ERROR,
-                         "Bad code word");
+      return VP8SetError(dec, VP8_STATUS_BITSTREAM_ERROR, "Bad code word");
    }
-    pic_hdr->width_ = ((buf[4] << 8) | buf[3]) & 0x3fff;
-    pic_hdr->xscale_ = buf[4] >> 6;   // ratio: 1, 5/4 5/3 or 2
-    pic_hdr->height_ = ((buf[6] << 8) | buf[5]) & 0x3fff;
-    pic_hdr->yscale_ = buf[6] >> 6;
+    pic_hdr->width = ((buf[4] << 8) | buf[3]) & 0x3fff;
+    pic_hdr->xscale = buf[4] >> 6;  // ratio: 1, 5/4 5/3 or 2
+    pic_hdr->height = ((buf[6] << 8) | buf[5]) & 0x3fff;
+    pic_hdr->yscale = buf[6] >> 6;
    buf += 7;
    buf_size -= 7;

-    dec->mb_w_ = (pic_hdr->width_ + 15) >> 4;
-    dec->mb_h_ = (pic_hdr->height_ + 15) >> 4;
+    dec->mb_w = (pic_hdr->width + 15) >> 4;
+    dec->mb_h = (pic_hdr->height + 15) >> 4;

    // Setup default output area (can be later modified during io->setup())
-    io->width = pic_hdr->width_;
-    io->height = pic_hdr->height_;
-    // IMPORTANT! use some sane dimensions in crop_* and scaled_* fields.
+    io->width = pic_hdr->width;
+    io->height = pic_hdr->height;
+    // IMPORTANT! use some sane dimensions in crop* and scaled* fields.
    // So they can be used interchangeably without always testing for
    // 'use_cropping'.
    io->use_cropping = 0;
-    io->crop_top  = 0;
+    io->crop_top = 0;
    io->crop_left = 0;
-    io->crop_right  = io->width;
+    io->crop_right = io->width;
    io->crop_bottom = io->height;
-    io->use_scaling  = 0;
+    io->use_scaling = 0;
    io->scaled_width = io->width;
    io->scaled_height = io->height;

    io->mb_w = io->width;   // for soundness
    io->mb_h = io->height;  // ditto

-    VP8ResetProba(&dec->proba_);
-    ResetSegmentHeader(&dec->segment_hdr_);
+    VP8ResetProba(&dec->proba);
+    ResetSegmentHeader(&dec->segment_hdr);
  }

-  // Check if we have all the partition #0 available, and initialize dec->br_
+  // Check if we have all the partition #0 available, and initialize dec->br
  // to read this partition (and this partition only).
-  if (frm_hdr->partition_length_ > buf_size) {
-    return VP8SetError(dec, VP8_STATUS_NOT_ENOUGH_DATA,
-                       "bad partition length");
+  if (frm_hdr->partition_length > buf_size) {
+    return VP8SetError(dec, VP8_STATUS_NOT_ENOUGH_DATA, "bad partition length");
  }

-  br = &dec->br_;
-  VP8InitBitReader(br, buf, frm_hdr->partition_length_);
-  buf += frm_hdr->partition_length_;
-  buf_size -= frm_hdr->partition_length_;
+  br = &dec->br;
+  VP8InitBitReader(br, buf, frm_hdr->partition_length);
+  buf += frm_hdr->partition_length;
+  buf_size -= frm_hdr->partition_length;

-  if (frm_hdr->key_frame_) {
-    pic_hdr->colorspace_ = VP8Get(br, "global-header");
-    pic_hdr->clamp_type_ = VP8Get(br, "global-header");
+  if (frm_hdr->key_frame) {
+    pic_hdr->colorspace = VP8Get(br, "global-header");
+    pic_hdr->clamp_type = VP8Get(br, "global-header");
  }
-  if (!ParseSegmentHeader(br, &dec->segment_hdr_, &dec->proba_)) {
+  if (!ParseSegmentHeader(br, &dec->segment_hdr, &dec->proba)) {
    return VP8SetError(dec, VP8_STATUS_BITSTREAM_ERROR,
                       "cannot parse segment header");
  }
@@ -380,32 +398,30 @@ int VP8GetHeaders(VP8Decoder* const dec, VP8Io* const io) {
  VP8ParseQuant(dec);

  // Frame buffer marking
-  if (!frm_hdr->key_frame_) {
-    return VP8SetError(dec, VP8_STATUS_UNSUPPORTED_FEATURE,
-                       "Not a key frame.");
+  if (!frm_hdr->key_frame) {
+    return VP8SetError(dec, VP8_STATUS_UNSUPPORTED_FEATURE, "Not a key frame.");
  }

-  VP8Get(br, "global-header");   // ignore the value of update_proba_
+  VP8Get(br, "global-header");  // ignore the value of 'update_proba'

  VP8ParseProba(br, dec);

  // sanitized state
-  dec->ready_ = 1;
+  dec->ready = 1;
  return 1;
 }

 //------------------------------------------------------------------------------
 // Residual decoding (Paragraph 13.2 / 13.3)

-static const uint8_t kCat3[] = { 173, 148, 140, 0 };
-static const uint8_t kCat4[] = { 176, 155, 140, 135, 0 };
-static const uint8_t kCat5[] = { 180, 157, 141, 134, 130, 0 };
-static const uint8_t kCat6[] =
-  { 254, 254, 243, 230, 196, 177, 153, 140, 133, 130, 129, 0 };
-static const uint8_t* const kCat3456[] = { kCat3, kCat4, kCat5, kCat6 };
-static const uint8_t kZigzag[16] = {
-  0, 1, 4, 8,  5, 2, 3, 6,  9, 12, 13, 10,  7, 11, 14, 15
-};
+static const uint8_t kCat3[] = {173, 148, 140, 0};
+static const uint8_t kCat4[] = {176, 155, 140, 135, 0};
+static const uint8_t kCat5[] = {180, 157, 141, 134, 130, 0};
+static const uint8_t kCat6[] = {254, 254, 243, 230, 196, 177,
+                                153, 140, 133, 130, 129, 0};
+static const uint8_t* const kCat3456[] = {kCat3, kCat4, kCat5, kCat6};
+static const uint8_t kZigzag[16] = {0, 1,  4,  8,  5, 2,  3,  6,
+                                    9, 12, 13, 10, 7, 11, 14, 15};

 // See section 13-2: https://datatracker.ietf.org/doc/html/rfc6386#section-13.2
 static int GetLargeValue(VP8BitReader* const br, const uint8_t* const p) {
@@ -441,19 +457,19 @@ static int GetLargeValue(VP8BitReader* const br, const uint8_t* const p) {

 // Returns the position of the last non-zero coeff plus one
 static int GetCoeffsFast(VP8BitReader* const br,
-                         const VP8BandProbas* const prob[],
-                         int ctx, const quant_t dq, int n, int16_t* out) {
-  const uint8_t* p = prob[n]->probas_[ctx];
+                         const VP8BandProbas* const prob[], int ctx,
+                         const quant_t dq, int n, int16_t* out) {
+  const uint8_t* p = prob[n]->probas[ctx];
  for (; n < 16; ++n) {
    if (!VP8GetBit(br, p[0], "coeffs")) {
      return n;  // previous coeff was last non-zero coeff
    }
-    while (!VP8GetBit(br, p[1], "coeffs")) {       // sequence of zero coeffs
-      p = prob[++n]->probas_[0];
+    while (!VP8GetBit(br, p[1], "coeffs")) {  // sequence of zero coeffs
+      p = prob[++n]->probas[0];
      if (n == 16) return 16;
    }
-    {        // non zero coeff
-      const VP8ProbaArray* const p_ctx = &prob[n + 1]->probas_[0];
+    {  // non zero coeff
+      const VP8ProbaArray* const p_ctx = &prob[n + 1]->probas[0];
      int v;
      if (!VP8GetBit(br, p[2], "coeffs")) {
        v = 1;
@@ -471,19 +487,19 @@ static int GetCoeffsFast(VP8BitReader* const br,
 // This version of GetCoeffs() uses VP8GetBitAlt() which is an alternate version
 // of VP8GetBitAlt() targeting specific platforms.
 static int GetCoeffsAlt(VP8BitReader* const br,
-                        const VP8BandProbas* const prob[],
-                        int ctx, const quant_t dq, int n, int16_t* out) {
-  const uint8_t* p = prob[n]->probas_[ctx];
+                        const VP8BandProbas* const prob[], int ctx,
+                        const quant_t dq, int n, int16_t* out) {
+  const uint8_t* p = prob[n]->probas[ctx];
  for (; n < 16; ++n) {
    if (!VP8GetBitAlt(br, p[0], "coeffs")) {
      return n;  // previous coeff was last non-zero coeff
    }
-    while (!VP8GetBitAlt(br, p[1], "coeffs")) {       // sequence of zero coeffs
-      p = prob[++n]->probas_[0];
+    while (!VP8GetBitAlt(br, p[1], "coeffs")) {  // sequence of zero coeffs
+      p = prob[++n]->probas[0];
      if (n == 16) return 16;
    }
-    {        // non zero coeff
-      const VP8ProbaArray* const p_ctx = &prob[n + 1]->probas_[0];
+    {  // non zero coeff
+      const VP8ProbaArray* const p_ctx = &prob[n + 1]->probas[0];
      int v;
      if (!VP8GetBitAlt(br, p[2], "coeffs")) {
        v = 1;
@@ -514,14 +530,14 @@ static WEBP_INLINE uint32_t NzCodeBits(uint32_t nz_coeffs, int nz, int dc_nz) {
  return nz_coeffs;
 }

-static int ParseResiduals(VP8Decoder* const dec,
-                          VP8MB* const mb, VP8BitReader* const token_br) {
-  const VP8BandProbas* (* const bands)[16 + 1] = dec->proba_.bands_ptr_;
-  const VP8BandProbas* const * ac_proba;
-  VP8MBData* const block = dec->mb_data_ + dec->mb_x_;
-  const VP8QuantMatrix* const q = &dec->dqm_[block->segment_];
-  int16_t* dst = block->coeffs_;
-  VP8MB* const left_mb = dec->mb_info_ - 1;
+static int ParseResiduals(VP8Decoder* const dec, VP8MB* const mb,
+                          VP8BitReader* const token_br) {
+  const VP8BandProbas*(*const bands)[16 + 1] = dec->proba.bands_ptr;
+  const VP8BandProbas* const* ac_proba;
+  VP8MBData* const block = dec->mb_data + dec->mb_x;
+  const VP8QuantMatrix* const q = &dec->dqm[block->segment];
+  int16_t* dst = block->coeffs;
+  VP8MB* const left_mb = dec->mb_info - 1;
  uint8_t tnz, lnz;
  uint32_t non_zero_y = 0;
  uint32_t non_zero_uv = 0;
@@ -529,15 +545,15 @@ static int ParseResiduals(VP8Decoder* const dec,
  uint32_t out_t_nz, out_l_nz;
  int first;

-  memset(dst, 0, 384 * sizeof(*dst));
-  if (!block->is_i4x4_) {    // parse DC
-    int16_t dc[16] = { 0 };
-    const int ctx = mb->nz_dc_ + left_mb->nz_dc_;
-    const int nz = GetCoeffs(token_br, bands[1], ctx, q->y2_mat_, 0, dc);
-    mb->nz_dc_ = left_mb->nz_dc_ = (nz > 0);
-    if (nz > 1) {   // more than just the DC -> perform the full transform
+  WEBP_UNSAFE_MEMSET(dst, 0, 384 * sizeof(*dst));
+  if (!block->is_i4x4) {  // parse DC
+    int16_t dc[16] = {0};
+    const int ctx = mb->nz_dc + left_mb->nz_dc;
+    const int nz = GetCoeffs(token_br, bands[1], ctx, q->y2_mat, 0, dc);
+    mb->nz_dc = left_mb->nz_dc = (nz > 0);
+    if (nz > 1) {  // more than just the DC -> perform the full transform
      VP8TransformWHT(dc, dst);
-    } else {        // only DC is non-zero -> inlined simplified transform
+    } else {  // only DC is non-zero -> inlined simplified transform
      int i;
      const int dc0 = (dc[0] + 3) >> 3;
      for (i = 0; i < 16 * 16; i += 16) dst[i] = dc0;
@@ -549,14 +565,14 @@ static int ParseResiduals(VP8Decoder* const dec,
    ac_proba = bands[3];
  }

-  tnz = mb->nz_ & 0x0f;
-  lnz = left_mb->nz_ & 0x0f;
+  tnz = mb->nz & 0x0f;
+  lnz = left_mb->nz & 0x0f;
  for (y = 0; y < 4; ++y) {
    int l = lnz & 1;
    uint32_t nz_coeffs = 0;
    for (x = 0; x < 4; ++x) {
      const int ctx = l + (tnz & 1);
-      const int nz = GetCoeffs(token_br, ac_proba, ctx, q->y1_mat_, first, dst);
+      const int nz = GetCoeffs(token_br, ac_proba, ctx, q->y1_mat, first, dst);
      l = (nz > first);
      tnz = (tnz >> 1) | (l << 7);
      nz_coeffs = NzCodeBits(nz_coeffs, nz, dst[0] != 0);
@@ -571,13 +587,13 @@ static int ParseResiduals(VP8Decoder* const dec,

  for (ch = 0; ch < 4; ch += 2) {
    uint32_t nz_coeffs = 0;
-    tnz = mb->nz_ >> (4 + ch);
-    lnz = left_mb->nz_ >> (4 + ch);
+    tnz = mb->nz >> (4 + ch);
+    lnz = left_mb->nz >> (4 + ch);
    for (y = 0; y < 2; ++y) {
      int l = lnz & 1;
      for (x = 0; x < 2; ++x) {
        const int ctx = l + (tnz & 1);
-        const int nz = GetCoeffs(token_br, bands[2], ctx, q->uv_mat_, 0, dst);
+        const int nz = GetCoeffs(token_br, bands[2], ctx, q->uv_mat, 0, dst);
        l = (nz > 0);
        tnz = (tnz >> 1) | (l << 3);
        nz_coeffs = NzCodeBits(nz_coeffs, nz, dst[0] != 0);
@@ -591,16 +607,16 @@ static int ParseResiduals(VP8Decoder* const dec,
    out_t_nz |= (tnz << 4) << ch;
    out_l_nz |= (lnz & 0xf0) << ch;
  }
-  mb->nz_ = out_t_nz;
-  left_mb->nz_ = out_l_nz;
+  mb->nz = out_t_nz;
+  left_mb->nz = out_l_nz;

-  block->non_zero_y_ = non_zero_y;
-  block->non_zero_uv_ = non_zero_uv;
+  block->non_zero_y = non_zero_y;
+  block->non_zero_uv = non_zero_uv;

  // We look at the mode-code of each block and check if some blocks have less
  // than three non-zero coeffs (code < 2). This is to avoid dithering flat and
  // empty blocks.
-  block->dither_ = (non_zero_uv & 0xaaaa) ? 0 : q->dither_;
+  block->dither = (non_zero_uv & 0xaaaa) ? 0 : q->dither;

  return !(non_zero_y | non_zero_uv);  // will be used for further optimization
 }
@@ -609,64 +625,64 @@ static int ParseResiduals(VP8Decoder* const dec,
 // Main loop

 int VP8DecodeMB(VP8Decoder* const dec, VP8BitReader* const token_br) {
-  VP8MB* const left = dec->mb_info_ - 1;
-  VP8MB* const mb = dec->mb_info_ + dec->mb_x_;
-  VP8MBData* const block = dec->mb_data_ + dec->mb_x_;
-  int skip = dec->use_skip_proba_ ? block->skip_ : 0;
+  VP8MB* const left = dec->mb_info - 1;
+  VP8MB* const mb = dec->mb_info + dec->mb_x;
+  VP8MBData* const block = dec->mb_data + dec->mb_x;
+  int skip = dec->use_skip_proba ? block->skip : 0;

  if (!skip) {
    skip = ParseResiduals(dec, mb, token_br);
  } else {
-    left->nz_ = mb->nz_ = 0;
-    if (!block->is_i4x4_) {
-      left->nz_dc_ = mb->nz_dc_ = 0;
+    left->nz = mb->nz = 0;
+    if (!block->is_i4x4) {
+      left->nz_dc = mb->nz_dc = 0;
    }
-    block->non_zero_y_ = 0;
-    block->non_zero_uv_ = 0;
-    block->dither_ = 0;
+    block->non_zero_y = 0;
+    block->non_zero_uv = 0;
+    block->dither = 0;
  }

-  if (dec->filter_type_ > 0) {  // store filter info
-    VP8FInfo* const finfo = dec->f_info_ + dec->mb_x_;
-    *finfo = dec->fstrengths_[block->segment_][block->is_i4x4_];
-    finfo->f_inner_ |= !skip;
+  if (dec->filter_type > 0) {  // store filter info
+    VP8FInfo* const finfo = dec->f_info + dec->mb_x;
+    *finfo = dec->fstrengths[block->segment][block->is_i4x4];
+    finfo->f_inner |= !skip;
  }

-  return !token_br->eof_;
+  return !token_br->eof;
 }

 void VP8InitScanline(VP8Decoder* const dec) {
-  VP8MB* const left = dec->mb_info_ - 1;
-  left->nz_ = 0;
-  left->nz_dc_ = 0;
-  memset(dec->intra_l_, B_DC_PRED, sizeof(dec->intra_l_));
-  dec->mb_x_ = 0;
+  VP8MB* const left = dec->mb_info - 1;
+  left->nz = 0;
+  left->nz_dc = 0;
+  WEBP_UNSAFE_MEMSET(dec->intra_l, B_DC_PRED, sizeof(dec->intra_l));
+  dec->mb_x = 0;
 }

 static int ParseFrame(VP8Decoder* const dec, VP8Io* io) {
-  for (dec->mb_y_ = 0; dec->mb_y_ < dec->br_mb_y_; ++dec->mb_y_) {
+  for (dec->mb_y = 0; dec->mb_y < dec->br_mb_y; ++dec->mb_y) {
    // Parse bitstream for this row.
    VP8BitReader* const token_br =
-        &dec->parts_[dec->mb_y_ & dec->num_parts_minus_one_];
-    if (!VP8ParseIntraModeRow(&dec->br_, dec)) {
+        &dec->parts[dec->mb_y & dec->num_parts_minus_one];
+    if (!VP8ParseIntraModeRow(&dec->br, dec)) {
      return VP8SetError(dec, VP8_STATUS_NOT_ENOUGH_DATA,
                         "Premature end-of-partition0 encountered.");
    }
-    for (; dec->mb_x_ < dec->mb_w_; ++dec->mb_x_) {
+    for (; dec->mb_x < dec->mb_w; ++dec->mb_x) {
      if (!VP8DecodeMB(dec, token_br)) {
        return VP8SetError(dec, VP8_STATUS_NOT_ENOUGH_DATA,
                           "Premature end-of-file encountered.");
      }
    }
-    VP8InitScanline(dec);   // Prepare for next scanline
+    VP8InitScanline(dec);  // Prepare for next scanline

    // Reconstruct, filter and emit the row.
    if (!VP8ProcessRow(dec, io)) {
      return VP8SetError(dec, VP8_STATUS_USER_ABORT, "Output aborted.");
    }
  }
-  if (dec->mt_method_ > 0) {
-    if (!WebPGetWorkerInterface()->Sync(&dec->worker_)) return 0;
+  if (dec->mt_method > 0) {
+    if (!WebPGetWorkerInterface()->Sync(&dec->worker)) return 0;
  }

  return 1;
@@ -683,16 +699,16 @@ int VP8Decode(VP8Decoder* const dec, VP8Io* const io) {
                       "NULL VP8Io parameter in VP8Decode().");
  }

-  if (!dec->ready_) {
+  if (!dec->ready) {
    if (!VP8GetHeaders(dec, io)) {
      return 0;
    }
  }
-  assert(dec->ready_);
+  assert(dec->ready);

  // Finish setting up the decoding parameter. Will call io->setup().
  ok = (VP8EnterCritical(dec, io) == VP8_STATUS_OK);
-  if (ok) {   // good to go.
+  if (ok) {  // good to go.
    // Will allocate memory and prepare everything.
    if (ok) ok = VP8InitFrame(dec, io);

@@ -708,7 +724,7 @@ int VP8Decode(VP8Decoder* const dec, VP8Io* const io) {
    return 0;
  }

-  dec->ready_ = 0;
+  dec->ready = 0;
  return ok;
 }

@@ -716,13 +732,13 @@ void VP8Clear(VP8Decoder* const dec) {
  if (dec == NULL) {
    return;
  }
-  WebPGetWorkerInterface()->End(&dec->worker_);
+  WebPGetWorkerInterface()->End(&dec->worker);
  WebPDeallocateAlphaMemory(dec);
-  WebPSafeFree(dec->mem_);
-  dec->mem_ = NULL;
-  dec->mem_size_ = 0;
-  memset(&dec->br_, 0, sizeof(dec->br_));
-  dec->ready_ = 0;
+  WebPSafeFree(dec->mem);
+  dec->mem = NULL;
+  dec->mem_size = 0;
+  WEBP_UNSAFE_MEMSET(&dec->br, 0, sizeof(dec->br));
+  dec->ready = 0;
 }

 //------------------------------------------------------------------------------
--- a/src/dec/vp8_dec.h
+++ b/src/dec/vp8_dec.h
@@ -14,9 +14,13 @@
 #ifndef WEBP_DEC_VP8_DEC_H_
 #define WEBP_DEC_VP8_DEC_H_

+#include <stddef.h>
+
 #include "src/webp/decode.h"
 #include "src/webp/types.h"

+WEBP_ASSUME_UNSAFE_INDEXABLE_ABI
+
 #ifdef __cplusplus
 extern "C" {
 #endif
@@ -47,20 +51,20 @@ typedef void (*VP8IoTeardownHook)(const VP8Io* io);

 struct VP8Io {
  // set by VP8GetHeaders()
-  int width, height;         // picture dimensions, in pixels (invariable).
-                             // These are the original, uncropped dimensions.
-                             // The actual area passed to put() is stored
-                             // in mb_w / mb_h fields.
+  int width, height;  // picture dimensions, in pixels (invariable).
+                      // These are the original, uncropped dimensions.
+                      // The actual area passed to put() is stored
+                      // in mb_w / mb_h fields.

  // set before calling put()
  int mb_y;                  // position of the current rows (in pixels)
  int mb_w;                  // number of columns in the sample
  int mb_h;                  // number of rows in the sample
-  const uint8_t* y, *u, *v;  // rows to copy (in yuv420 format)
+  const uint8_t *y, *u, *v;  // rows to copy (in yuv420 format)
  int y_stride;              // row stride for luma
  int uv_stride;             // row stride for chroma

-  void* opaque;              // user data
+  void* opaque;  // user data

  // called when fresh samples are available. Currently, samples are in
  // YUV420 format, and can be up to width x 24 in size (depending on the
@@ -156,29 +160,33 @@ void VP8Delete(VP8Decoder* const dec);
 // Miscellaneous VP8/VP8L bitstream probing functions.

 // Returns true if the next 3 bytes in data contain the VP8 signature.
-WEBP_EXTERN int VP8CheckSignature(const uint8_t* const data, size_t data_size);
+WEBP_EXTERN int VP8CheckSignature(
+    const uint8_t* const WEBP_COUNTED_BY(data_size) data, size_t data_size);

 // Validates the VP8 data-header and retrieves basic header information viz
 // width and height. Returns 0 in case of formatting error. *width/*height
 // can be passed NULL.
 WEBP_EXTERN int VP8GetInfo(
-    const uint8_t* data,
-    size_t data_size,    // data available so far
-    size_t chunk_size,   // total data size expected in the chunk
+    const uint8_t* WEBP_COUNTED_BY(data_size) data,
+    size_t data_size,   // data available so far
+    size_t chunk_size,  // total data size expected in the chunk
    int* const width, int* const height);

 // Returns true if the next byte(s) in data is a VP8L signature.
-WEBP_EXTERN int VP8LCheckSignature(const uint8_t* const data, size_t size);
+WEBP_EXTERN int VP8LCheckSignature(const uint8_t* const WEBP_COUNTED_BY(size)
+                                       data,
+                                   size_t size);

 // Validates the VP8L data-header and retrieves basic header information viz
 // width, height and alpha. Returns 0 in case of formatting error.
 // width/height/has_alpha can be passed NULL.
-WEBP_EXTERN int VP8LGetInfo(
-    const uint8_t* data, size_t data_size,  // data available so far
-    int* const width, int* const height, int* const has_alpha);
+WEBP_EXTERN int VP8LGetInfo(const uint8_t* WEBP_COUNTED_BY(data_size) data,
+                            size_t data_size,  // data available so far
+                            int* const width, int* const height,
+                            int* const has_alpha);

 #ifdef __cplusplus
-}    // extern "C"
+}  // extern "C"
 #endif

 #endif  // WEBP_DEC_VP8_DEC_H_
--- a/src/dec/vp8i_dec.h
+++ b/src/dec/vp8i_dec.h
@@ -14,15 +14,21 @@
 #ifndef WEBP_DEC_VP8I_DEC_H_
 #define WEBP_DEC_VP8I_DEC_H_

-#include <string.h>     // for memcpy()
+#include <string.h>  // for memcpy()
+
 #include "src/dec/common_dec.h"
+#include "src/dec/vp8_dec.h"
 #include "src/dec/vp8li_dec.h"
+#include "src/dec/webpi_dec.h"
+#include "src/dsp/dsp.h"
 #include "src/utils/bit_reader_utils.h"
 #include "src/utils/random_utils.h"
 #include "src/utils/thread_utils.h"
-#include "src/dsp/dsp.h"
+#include "src/webp/decode.h"
 #include "src/webp/types.h"

+WEBP_ASSUME_UNSAFE_INDEXABLE_ABI
+
 #ifdef __cplusplus
 extern "C" {
 #endif
@@ -32,7 +38,7 @@ extern "C" {

 // version numbers
 #define DEC_MAJ_VERSION 1
-#define DEC_MIN_VERSION 4
+#define DEC_MIN_VERSION 6
 #define DEC_REV_VERSION 0

 // YUV-cache parameters. Cache is 32-bytes wide (= one cacheline).
@@ -58,9 +64,9 @@ extern "C" {
 //  '|' = left sample,   '-' = top sample,    '+' = top-left sample
 //  't' = extra top-right sample for 4x4 modes
 #define YUV_SIZE (BPS * 17 + BPS * 9)
-#define Y_OFF    (BPS * 1 + 8)
-#define U_OFF    (Y_OFF + BPS * 16 + BPS)
-#define V_OFF    (U_OFF + 16)
+#define Y_OFF (BPS * 1 + 8)
+#define U_OFF (Y_OFF + BPS * 16 + BPS)
+#define V_OFF (U_OFF + 16)

 // minimal width under which lossy multi-threading is always disabled
 #define MIN_WIDTH_FOR_THREADS 512
@@ -69,85 +75,85 @@ extern "C" {
 // Headers

 typedef struct {
-  uint8_t key_frame_;
-  uint8_t profile_;
-  uint8_t show_;
-  uint32_t partition_length_;
+  uint8_t key_frame;
+  uint8_t profile;
+  uint8_t show;
+  uint32_t partition_length;
 } VP8FrameHeader;

 typedef struct {
-  uint16_t width_;
-  uint16_t height_;
-  uint8_t xscale_;
-  uint8_t yscale_;
-  uint8_t colorspace_;   // 0 = YCbCr
-  uint8_t clamp_type_;
+  uint16_t width;
+  uint16_t height;
+  uint8_t xscale;
+  uint8_t yscale;
+  uint8_t colorspace;  // 0 = YCbCr
+  uint8_t clamp_type;
 } VP8PictureHeader;

 // segment features
 typedef struct {
-  int use_segment_;
-  int update_map_;        // whether to update the segment map or not
-  int absolute_delta_;    // absolute or delta values for quantizer and filter
-  int8_t quantizer_[NUM_MB_SEGMENTS];        // quantization changes
-  int8_t filter_strength_[NUM_MB_SEGMENTS];  // filter strength for segments
+  int use_segment;
+  int update_map;      // whether to update the segment map or not
+  int absolute_delta;  // absolute or delta values for quantizer and filter
+  int8_t quantizer[NUM_MB_SEGMENTS];        // quantization changes
+  int8_t filter_strength[NUM_MB_SEGMENTS];  // filter strength for segments
 } VP8SegmentHeader;

 // probas associated to one of the contexts
 typedef uint8_t VP8ProbaArray[NUM_PROBAS];

-typedef struct {   // all the probas associated to one band
-  VP8ProbaArray probas_[NUM_CTX];
+typedef struct {  // all the probas associated to one band
+  VP8ProbaArray probas[NUM_CTX];
 } VP8BandProbas;

 // Struct collecting all frame-persistent probabilities.
 typedef struct {
-  uint8_t segments_[MB_FEATURE_TREE_PROBS];
+  uint8_t segments[MB_FEATURE_TREE_PROBS];
  // Type: 0:Intra16-AC  1:Intra16-DC   2:Chroma   3:Intra4
-  VP8BandProbas bands_[NUM_TYPES][NUM_BANDS];
-  const VP8BandProbas* bands_ptr_[NUM_TYPES][16 + 1];
+  VP8BandProbas bands[NUM_TYPES][NUM_BANDS];
+  const VP8BandProbas* bands_ptr[NUM_TYPES][16 + 1];
 } VP8Proba;

 // Filter parameters
 typedef struct {
-  int simple_;                  // 0=complex, 1=simple
-  int level_;                   // [0..63]
-  int sharpness_;               // [0..7]
-  int use_lf_delta_;
-  int ref_lf_delta_[NUM_REF_LF_DELTAS];
-  int mode_lf_delta_[NUM_MODE_LF_DELTAS];
+  int simple;     // 0=complex, 1=simple
+  int level;      // [0..63]
+  int sharpness;  // [0..7]
+  int use_lf_delta;
+  int ref_lf_delta[NUM_REF_LF_DELTAS];
+  int mode_lf_delta[NUM_MODE_LF_DELTAS];
 } VP8FilterHeader;

 //------------------------------------------------------------------------------
 // Informations about the macroblocks.

-typedef struct {  // filter specs
-  uint8_t f_limit_;      // filter limit in [3..189], or 0 if no filtering
-  uint8_t f_ilevel_;     // inner limit in [1..63]
-  uint8_t f_inner_;      // do inner filtering?
-  uint8_t hev_thresh_;   // high edge variance threshold in [0..2]
+typedef struct {       // filter specs
+  uint8_t f_limit;     // filter limit in [3..189], or 0 if no filtering
+  uint8_t f_ilevel;    // inner limit in [1..63]
+  uint8_t f_inner;     // do inner filtering?
+  uint8_t hev_thresh;  // high edge variance threshold in [0..2]
 } VP8FInfo;

 typedef struct {  // Top/Left Contexts used for syntax-parsing
-  uint8_t nz_;        // non-zero AC/DC coeffs (4bit for luma + 4bit for chroma)
-  uint8_t nz_dc_;     // non-zero DC coeff (1bit)
+  uint8_t nz;     // non-zero AC/DC coeffs (4bit for luma + 4bit for chroma)
+  uint8_t nz_dc;  // non-zero DC coeff (1bit)
 } VP8MB;

 // Dequantization matrices
-typedef int quant_t[2];      // [DC / AC].  Can be 'uint16_t[2]' too (~slower).
+typedef int quant_t[2];  // [DC / AC].  Can be 'uint16_t[2]' too (~slower).
 typedef struct {
-  quant_t y1_mat_, y2_mat_, uv_mat_;
+  quant_t y1_mat, y2_mat, uv_mat;

-  int uv_quant_;   // U/V quantizer value
-  int dither_;     // dithering amplitude (0 = off, max=255)
+  int uv_quant;  // U/V quantizer value
+  int dither;    // dithering amplitude (0 = off, max=255)
 } VP8QuantMatrix;

 // Data needed to reconstruct a macroblock
 typedef struct {
-  int16_t coeffs_[384];   // 384 coeffs = (16+4+4) * 4*4
-  uint8_t is_i4x4_;       // true if intra4x4
-  uint8_t imodes_[16];    // one 16x16 mode (#0) or sixteen 4x4 modes
-  uint8_t uvmode_;        // chroma prediction mode
+  int16_t coeffs[384];  // 384 coeffs = (16+4+4) * 4*4
+  uint8_t is_i4x4;      // true if intra4x4
+  uint8_t imodes[16];   // one 16x16 mode (#0) or sixteen 4x4 modes
+  uint8_t uvmode;       // chroma prediction mode
  // bit-wise info about the content of each sub-4x4 blocks (in decoding order).
  // Each of the 4x4 blocks for y/u/v is associated with a 2b code according to:
  //   code=0 -> no coefficient
@@ -155,21 +161,21 @@ typedef struct {
  //   code=2 -> first three coefficients are non-zero
  //   code=3 -> more than three coefficients are non-zero
  // This allows to call specialized transform functions.
-  uint32_t non_zero_y_;
-  uint32_t non_zero_uv_;
-  uint8_t dither_;      // local dithering strength (deduced from non_zero_*)
-  uint8_t skip_;
-  uint8_t segment_;
+  uint32_t non_zero_y;
+  uint32_t non_zero_uv;
+  uint8_t dither;  // local dithering strength (deduced from non_zero*)
+  uint8_t skip;
+  uint8_t segment;
 } VP8MBData;

 // Persistent information needed by the parallel processing
 typedef struct {
-  int id_;              // cache row to process (in [0..2])
-  int mb_y_;            // macroblock position of the row
-  int filter_row_;      // true if row-filtering is needed
-  VP8FInfo* f_info_;    // filter strengths (swapped with dec->f_info_)
-  VP8MBData* mb_data_;  // reconstruction data (swapped with dec->mb_data_)
-  VP8Io io_;            // copy of the VP8Io to pass to put()
+  int id;              // cache row to process (in [0..2])
+  int mb_y;            // macroblock position of the row
+  int filter_row;      // true if row-filtering is needed
+  VP8FInfo* f_info;    // filter strengths (swapped with dec->f_info)
+  VP8MBData* mb_data;  // reconstruction data (swapped with dec->mb_data)
+  VP8Io io;            // copy of the VP8Io to pass to put()
 } VP8ThreadContext;

 // Saved top samples, per macroblock. Fits into a cache-line.
@@ -181,97 +187,98 @@ typedef struct {
 // VP8Decoder: the main opaque structure handed over to user

 struct VP8Decoder {
-  VP8StatusCode status_;
-  int ready_;     // true if ready to decode a picture with VP8Decode()
-  const char* error_msg_;  // set when status_ is not OK.
+  VP8StatusCode status;
+  int ready;              // true if ready to decode a picture with VP8Decode()
+  const char* error_msg;  // set when status is not OK.

  // Main data source
-  VP8BitReader br_;
-  int incremental_;  // if true, incremental decoding is expected
+  VP8BitReader br;
+  int incremental;  // if true, incremental decoding is expected

  // headers
-  VP8FrameHeader   frm_hdr_;
-  VP8PictureHeader pic_hdr_;
-  VP8FilterHeader  filter_hdr_;
-  VP8SegmentHeader segment_hdr_;
+  VP8FrameHeader frm_hdr;
+  VP8PictureHeader pic_hdr;
+  VP8FilterHeader filter_hdr;
+  VP8SegmentHeader segment_hdr;

  // Worker
-  WebPWorker worker_;
-  int mt_method_;      // multi-thread method: 0=off, 1=[parse+recon][filter]
-                       // 2=[parse][recon+filter]
-  int cache_id_;       // current cache row
-  int num_caches_;     // number of cached rows of 16 pixels (1, 2 or 3)
-  VP8ThreadContext thread_ctx_;  // Thread context
+  WebPWorker worker;
+  int mt_method;   // multi-thread method: 0=off, 1=[parse+recon][filter]
+                   // 2=[parse][recon+filter]
+  int cache_id;    // current cache row
+  int num_caches;  // number of cached rows of 16 pixels (1, 2 or 3)
+  VP8ThreadContext thread_ctx;  // Thread context

  // dimension, in macroblock units.
-  int mb_w_, mb_h_;
+  int mb_w, mb_h;

  // Macroblock to process/filter, depending on cropping and filter_type.
-  int tl_mb_x_, tl_mb_y_;  // top-left MB that must be in-loop filtered
-  int br_mb_x_, br_mb_y_;  // last bottom-right MB that must be decoded
+  int tl_mb_x, tl_mb_y;  // top-left MB that must be in-loop filtered
+  int br_mb_x, br_mb_y;  // last bottom-right MB that must be decoded

  // number of partitions minus one.
-  uint32_t num_parts_minus_one_;
+  uint32_t num_parts_minus_one;
  // per-partition boolean decoders.
-  VP8BitReader parts_[MAX_NUM_PARTITIONS];
+  VP8BitReader parts[MAX_NUM_PARTITIONS];

  // Dithering strength, deduced from decoding options
-  int dither_;                // whether to use dithering or not
-  VP8Random dithering_rg_;    // random generator for dithering
+  int dither;              // whether to use dithering or not
+  VP8Random dithering_rg;  // random generator for dithering

  // dequantization (one set of DC/AC dequant factor per segment)
-  VP8QuantMatrix dqm_[NUM_MB_SEGMENTS];
+  VP8QuantMatrix dqm[NUM_MB_SEGMENTS];

  // probabilities
-  VP8Proba proba_;
-  int use_skip_proba_;
-  uint8_t skip_p_;
+  VP8Proba proba;
+  int use_skip_proba;
+  uint8_t skip_p;

  // Boundary data cache and persistent buffers.
-  uint8_t* intra_t_;      // top intra modes values: 4 * mb_w_
-  uint8_t  intra_l_[4];   // left intra modes values
+  uint8_t* intra_t;    // top intra modes values: 4 * mb_w
+  uint8_t intra_l[4];  // left intra modes values

-  VP8TopSamples* yuv_t_;  // top y/u/v samples
+  VP8TopSamples* yuv_t;  // top y/u/v samples

-  VP8MB* mb_info_;        // contextual macroblock info (mb_w_ + 1)
-  VP8FInfo* f_info_;      // filter strength info
-  uint8_t* yuv_b_;        // main block for Y/U/V (size = YUV_SIZE)
+  VP8MB* mb_info;    // contextual macroblock info (mb_w + 1)
+  VP8FInfo* f_info;  // filter strength info
+  uint8_t* yuv_b;    // main block for Y/U/V (size = YUV_SIZE)

-  uint8_t* cache_y_;      // macroblock row for storing unfiltered samples
-  uint8_t* cache_u_;
-  uint8_t* cache_v_;
-  int cache_y_stride_;
-  int cache_uv_stride_;
+  uint8_t* cache_y;  // macroblock row for storing unfiltered samples
+  uint8_t* cache_u;
+  uint8_t* cache_v;
+  int cache_y_stride;
+  int cache_uv_stride;

  // main memory chunk for the above data. Persistent.
-  void* mem_;
-  size_t mem_size_;
+  void* mem;
+  size_t mem_size;

  // Per macroblock non-persistent infos.
-  int mb_x_, mb_y_;       // current position, in macroblock units
-  VP8MBData* mb_data_;    // parsed reconstruction data
+  int mb_x, mb_y;      // current position, in macroblock units
+  VP8MBData* mb_data;  // parsed reconstruction data

  // Filtering side-info
-  int filter_type_;                          // 0=off, 1=simple, 2=complex
-  VP8FInfo fstrengths_[NUM_MB_SEGMENTS][2];  // precalculated per-segment/type
+  int filter_type;                          // 0=off, 1=simple, 2=complex
+  VP8FInfo fstrengths[NUM_MB_SEGMENTS][2];  // precalculated per-segment/type

  // Alpha
-  struct ALPHDecoder* alph_dec_;  // alpha-plane decoder object
-  const uint8_t* alpha_data_;     // compressed alpha data (if present)
-  size_t alpha_data_size_;
-  int is_alpha_decoded_;      // true if alpha_data_ is decoded in alpha_plane_
-  uint8_t* alpha_plane_mem_;  // memory allocated for alpha_plane_
-  uint8_t* alpha_plane_;      // output. Persistent, contains the whole data.
-  const uint8_t* alpha_prev_line_;  // last decoded alpha row (or NULL)
-  int alpha_dithering_;       // derived from decoding options (0=off, 100=full)
+  struct ALPHDecoder* alph_dec;  // alpha-plane decoder object
+  const uint8_t* WEBP_COUNTED_BY(alpha_data_size)
+      alpha_data;  // compressed alpha data (if present)
+  size_t alpha_data_size;
+  int is_alpha_decoded;      // true if alpha_data is decoded in alpha_plane
+  uint8_t* alpha_plane_mem;  // memory allocated for alpha_plane
+  uint8_t* alpha_plane;      // output. Persistent, contains the whole data.
+  const uint8_t* alpha_prev_line;  // last decoded alpha row (or NULL)
+  int alpha_dithering;  // derived from decoding options (0=off, 100=full)
 };

 //------------------------------------------------------------------------------
 // internal functions. Not public.

 // in vp8.c
-int VP8SetError(VP8Decoder* const dec,
-                VP8StatusCode error, const char* const msg);
+int VP8SetError(VP8Decoder* const dec, VP8StatusCode error,
+                const char* const msg);

 // in tree.c
 void VP8ResetProba(VP8Proba* const proba);
@@ -295,8 +302,8 @@ WEBP_NODISCARD int VP8ExitCritical(VP8Decoder* const dec, VP8Io* const io);
 // Return the multi-threading method to use (0=off), depending
 // on options and bitstream size. Only for lossy decoding.
 int VP8GetThreadMethod(const WebPDecoderOptions* const options,
-                       const WebPHeaderStructure* const headers,
-                       int width, int height);
+                       const WebPHeaderStructure* const headers, int width,
+                       int height);
 // Initialize dithering post-process if needed.
 void VP8InitDithering(const WebPDecoderOptions* const options,
                      VP8Decoder* const dec);
@@ -310,13 +317,13 @@ WEBP_NODISCARD int VP8DecodeMB(VP8Decoder* const dec,

 // in alpha.c
 const uint8_t* VP8DecompressAlphaRows(VP8Decoder* const dec,
-                                      const VP8Io* const io,
-                                      int row, int num_rows);
+                                      const VP8Io* const io, int row,
+                                      int num_rows);

 //------------------------------------------------------------------------------

 #ifdef __cplusplus
-}    // extern "C"
+}  // extern "C"
 #endif

 #endif  // WEBP_DEC_VP8I_DEC_H_
--- a/src/dec/vp8l_dec.c
+++ b/src/dec/vp8l_dec.c
--- a/src/dec/vp8li_dec.h
+++ b/src/dec/vp8li_dec.h
@@ -15,80 +15,85 @@
 #ifndef WEBP_DEC_VP8LI_DEC_H_
 #define WEBP_DEC_VP8LI_DEC_H_

-#include <string.h>     // for memcpy()
+#include <string.h>  // for memcpy()
+
+#include "src/dec/vp8_dec.h"
 #include "src/dec/webpi_dec.h"
 #include "src/utils/bit_reader_utils.h"
 #include "src/utils/color_cache_utils.h"
 #include "src/utils/huffman_utils.h"
+#include "src/utils/rescaler_utils.h"
+#include "src/webp/decode.h"
+#include "src/webp/format_constants.h"
 #include "src/webp/types.h"

+WEBP_ASSUME_UNSAFE_INDEXABLE_ABI
+
 #ifdef __cplusplus
 extern "C" {
 #endif

-typedef enum {
-  READ_DATA = 0,
-  READ_HDR = 1,
-  READ_DIM = 2
-} VP8LDecodeState;
+typedef enum { READ_DATA = 0, READ_HDR = 1, READ_DIM = 2 } VP8LDecodeState;

 typedef struct VP8LTransform VP8LTransform;
 struct VP8LTransform {
-  VP8LImageTransformType type_;   // transform type.
-  int                    bits_;   // subsampling bits defining transform window.
-  int                    xsize_;  // transform window X index.
-  int                    ysize_;  // transform window Y index.
-  uint32_t*              data_;   // transform data.
+  VP8LImageTransformType type;  // transform type.
+  int bits;                     // subsampling bits defining transform window.
+  int xsize;                    // transform window X index.
+  int ysize;                    // transform window Y index.
+  uint32_t* data;               // transform data.
 };

 typedef struct {
-  int             color_cache_size_;
-  VP8LColorCache  color_cache_;
-  VP8LColorCache  saved_color_cache_;  // for incremental
+  int color_cache_size;
+  VP8LColorCache color_cache;
+  VP8LColorCache saved_color_cache;  // for incremental

-  int             huffman_mask_;
-  int             huffman_subsample_bits_;
-  int             huffman_xsize_;
-  uint32_t*       huffman_image_;
-  int             num_htree_groups_;
-  HTreeGroup*     htree_groups_;
-  HuffmanTables   huffman_tables_;
+  int huffman_mask;
+  int huffman_subsample_bits;
+  int huffman_xsize;
+  uint32_t* huffman_image;
+  int num_htree_groups;
+  HTreeGroup* htree_groups;
+  HuffmanTables huffman_tables;
 } VP8LMetadata;

 typedef struct VP8LDecoder VP8LDecoder;
 struct VP8LDecoder {
-  VP8StatusCode    status_;
-  VP8LDecodeState  state_;
-  VP8Io*           io_;
+  VP8StatusCode status;
+  VP8LDecodeState state;
+  VP8Io* io;

-  const WebPDecBuffer* output_;    // shortcut to io->opaque->output
+  const WebPDecBuffer* output;  // shortcut to io->opaque->output

-  uint32_t*        pixels_;        // Internal data: either uint8_t* for alpha
-                                   // or uint32_t* for BGRA.
-  uint32_t*        argb_cache_;    // Scratch buffer for temporary BGRA storage.
+  uint32_t* pixels;      // Internal data: either uint8_t* for alpha
+                         // or uint32_t* for BGRA.
+  uint32_t* argb_cache;  // Scratch buffer for temporary BGRA storage.
+  uint16_t* accumulated_rgb_pixels;  // Scratch buffer for accumulated RGB for
+                                     // YUV conversion.

-  VP8LBitReader    br_;
-  int              incremental_;   // if true, incremental decoding is expected
-  VP8LBitReader    saved_br_;      // note: could be local variables too
-  int              saved_last_pixel_;
+  VP8LBitReader br;
+  int incremental;         // if true, incremental decoding is expected
+  VP8LBitReader saved_br;  // note: could be local variables too
+  int saved_last_pixel;

-  int              width_;
-  int              height_;
-  int              last_row_;      // last input row decoded so far.
-  int              last_pixel_;    // last pixel decoded so far. However, it may
-                                   // not be transformed, scaled and
-                                   // color-converted yet.
-  int              last_out_row_;  // last row output so far.
+  int width;
+  int height;
+  int last_row;      // last input row decoded so far.
+  int last_pixel;    // last pixel decoded so far. However, it may
+                     // not be transformed, scaled and
+                     // color-converted yet.
+  int last_out_row;  // last row output so far.

-  VP8LMetadata     hdr_;
+  VP8LMetadata hdr;

-  int              next_transform_;
-  VP8LTransform    transforms_[NUM_TRANSFORMS];
+  int next_transform;
+  VP8LTransform transforms[NUM_TRANSFORMS];
  // or'd bitset storing the transforms types.
-  uint32_t         transforms_seen_;
+  uint32_t transforms_seen;

-  uint8_t*         rescaler_memory;  // Working memory for rescaling work.
-  WebPRescaler*    rescaler;         // Common rescaler for all channels.
+  uint8_t* rescaler_memory;  // Working memory for rescaling work.
+  WebPRescaler* rescaler;    // Common rescaler for all channels.
 };

 //------------------------------------------------------------------------------
@@ -100,9 +105,9 @@ struct ALPHDecoder;  // Defined in dec/alphai.h.

 // Decodes image header for alpha data stored using lossless compression.
 // Returns false in case of error.
-WEBP_NODISCARD int VP8LDecodeAlphaHeader(struct ALPHDecoder* const alph_dec,
-                                         const uint8_t* const data,
-                                         size_t data_size);
+WEBP_NODISCARD int VP8LDecodeAlphaHeader(
+    struct ALPHDecoder* const alph_dec,
+    const uint8_t* const WEBP_COUNTED_BY(data_size) data, size_t data_size);

 // Decodes *at least* 'last_row' rows of alpha. If some of the initial rows are
 // already decoded in previous call(s), it will resume decoding from where it
@@ -118,7 +123,7 @@ WEBP_NODISCARD VP8LDecoder* VP8LNew(void);
 WEBP_NODISCARD int VP8LDecodeHeader(VP8LDecoder* const dec, VP8Io* const io);

 // Decodes an image. It's required to decode the lossless header before calling
-// this function. Returns false in case of error, with updated dec->status_.
+// this function. Returns false in case of error, with updated dec->status.
 WEBP_NODISCARD int VP8LDecodeImage(VP8LDecoder* const dec);

 // Clears and deallocate a lossless decoder instance.
@@ -139,7 +144,7 @@ WEBP_NODISCARD int ReadHuffmanCodesHelper(
 //------------------------------------------------------------------------------

 #ifdef __cplusplus
-}    // extern "C"
+}  // extern "C"
 #endif

 #endif  // WEBP_DEC_VP8LI_DEC_H_
--- a/src/dec/webp_dec.c
+++ b/src/dec/webp_dec.c
@@ -11,17 +11,24 @@
 //
 // Author: Skal (pascal.massimino@gmail.com)

+#include <assert.h>
 #include <stdlib.h>
+#include <string.h>

+#include "src/dec/common_dec.h"
 #include "src/dec/vp8_dec.h"
 #include "src/dec/vp8i_dec.h"
 #include "src/dec/vp8li_dec.h"
 #include "src/dec/webpi_dec.h"
+#include "src/utils/rescaler_utils.h"
 #include "src/utils/utils.h"
-#include "src/webp/mux_types.h"  // ALPHA_FLAG
 #include "src/webp/decode.h"
+#include "src/webp/format_constants.h"
+#include "src/webp/mux_types.h"  // ALPHA_FLAG
 #include "src/webp/types.h"

+WEBP_ASSUME_UNSAFE_INDEXABLE_ABI
+
 //------------------------------------------------------------------------------
 // RIFF layout is:
 //   Offset  tag
@@ -54,9 +61,11 @@
 // and VP8_STATUS_OK otherwise.
 // In case there are not enough bytes (partial RIFF container), return 0 for
 // *riff_size. Else return the RIFF size extracted from the header.
-static VP8StatusCode ParseRIFF(const uint8_t** const data,
-                               size_t* const data_size, int have_all_data,
-                               size_t* const riff_size) {
+static VP8StatusCode ParseRIFF(const uint8_t* WEBP_COUNTED_BY(*data_size) *
+                                   WEBP_SINGLE const data,
+                               size_t* WEBP_SINGLE const data_size,
+                               int have_all_data,
+                               size_t* WEBP_SINGLE const riff_size) {
  assert(data != NULL);
  assert(data_size != NULL);
  assert(riff_size != NULL);
@@ -79,8 +88,8 @@ static VP8StatusCode ParseRIFF(const uint8_t** const data,
      }
      // We have a RIFF container. Skip it.
      *riff_size = size;
-      *data += RIFF_HEADER_SIZE;
      *data_size -= RIFF_HEADER_SIZE;
+      *data += RIFF_HEADER_SIZE;
    }
  }
  return VP8_STATUS_OK;
@@ -93,11 +102,13 @@ static VP8StatusCode ParseRIFF(const uint8_t** const data,
 // If a VP8X chunk is found, found_vp8x is set to true and *width_ptr,
 // *height_ptr and *flags_ptr are set to the corresponding values extracted
 // from the VP8X chunk.
-static VP8StatusCode ParseVP8X(const uint8_t** const data,
-                               size_t* const data_size,
-                               int* const found_vp8x,
-                               int* const width_ptr, int* const height_ptr,
-                               uint32_t* const flags_ptr) {
+static VP8StatusCode ParseVP8X(const uint8_t* WEBP_COUNTED_BY(*data_size) *
+                                   WEBP_SINGLE const data,
+                               size_t* WEBP_SINGLE const data_size,
+                               int* WEBP_SINGLE const found_vp8x,
+                               int* WEBP_SINGLE const width_ptr,
+                               int* WEBP_SINGLE const height_ptr,
+                               uint32_t* WEBP_SINGLE const flags_ptr) {
  const uint32_t vp8x_size = CHUNK_HEADER_SIZE + VP8X_CHUNK_SIZE;
  assert(data != NULL);
  assert(data_size != NULL);
@@ -132,8 +143,8 @@ static VP8StatusCode ParseVP8X(const uint8_t** const data,
    if (width_ptr != NULL) *width_ptr = width;
    if (height_ptr != NULL) *height_ptr = height;
    // Skip over VP8X header bytes.
-    *data += vp8x_size;
    *data_size -= vp8x_size;
+    *data += vp8x_size;
    *found_vp8x = 1;
  }
  return VP8_STATUS_OK;
@@ -146,13 +157,13 @@ static VP8StatusCode ParseVP8X(const uint8_t** const data,
 //         VP8_STATUS_OK otherwise.
 // If an alpha chunk is found, *alpha_data and *alpha_size are set
 // appropriately.
-static VP8StatusCode ParseOptionalChunks(const uint8_t** const data,
-                                         size_t* const data_size,
-                                         size_t const riff_size,
-                                         const uint8_t** const alpha_data,
-                                         size_t* const alpha_size) {
-  const uint8_t* buf;
+static VP8StatusCode ParseOptionalChunks(
+    const uint8_t* WEBP_COUNTED_BY(*data_size) * WEBP_SINGLE const data,
+    size_t* WEBP_SINGLE const data_size, size_t const riff_size,
+    const uint8_t* WEBP_COUNTED_BY(*alpha_size) * WEBP_SINGLE const alpha_data,
+    size_t* WEBP_SINGLE const alpha_size) {
  size_t buf_size;
+  const uint8_t* WEBP_COUNTED_BY(buf_size) buf;
  uint32_t total_size = TAG_SIZE +           // "WEBP".
                        CHUNK_HEADER_SIZE +  // "VP8Xnnnn".
                        VP8X_CHUNK_SIZE;     // data.
@@ -168,10 +179,10 @@ static VP8StatusCode ParseOptionalChunks(const uint8_t** const data,

  while (1) {
    uint32_t chunk_size;
-    uint32_t disk_chunk_size;   // chunk_size with padding
+    uint32_t disk_chunk_size;  // chunk_size with padding

-    *data = buf;
    *data_size = buf_size;
+    *data = buf;

    if (buf_size < CHUNK_HEADER_SIZE) {  // Insufficient data.
      return VP8_STATUS_NOT_ENOUGH_DATA;
@@ -179,7 +190,7 @@ static VP8StatusCode ParseOptionalChunks(const uint8_t** const data,

    chunk_size = GetLE32(buf + TAG_SIZE);
    if (chunk_size > MAX_CHUNK_PAYLOAD) {
-      return VP8_STATUS_BITSTREAM_ERROR;          // Not a valid chunk size.
+      return VP8_STATUS_BITSTREAM_ERROR;  // Not a valid chunk size.
    }
    // For odd-sized chunk-payload, there's one byte padding at the end.
    disk_chunk_size = (CHUNK_HEADER_SIZE + chunk_size + 1) & ~1u;
@@ -187,23 +198,22 @@ static VP8StatusCode ParseOptionalChunks(const uint8_t** const data,

    // Check that total bytes skipped so far does not exceed riff_size.
    if (riff_size > 0 && (total_size > riff_size)) {
-      return VP8_STATUS_BITSTREAM_ERROR;          // Not a valid chunk size.
+      return VP8_STATUS_BITSTREAM_ERROR;  // Not a valid chunk size.
    }

    // Start of a (possibly incomplete) VP8/VP8L chunk implies that we have
    // parsed all the optional chunks.
    // Note: This check must occur before the check 'buf_size < disk_chunk_size'
    // below to allow incomplete VP8/VP8L chunks.
-    if (!memcmp(buf, "VP8 ", TAG_SIZE) ||
-        !memcmp(buf, "VP8L", TAG_SIZE)) {
+    if (!memcmp(buf, "VP8 ", TAG_SIZE) || !memcmp(buf, "VP8L", TAG_SIZE)) {
      return VP8_STATUS_OK;
    }

-    if (buf_size < disk_chunk_size) {             // Insufficient data.
+    if (buf_size < disk_chunk_size) {  // Insufficient data.
      return VP8_STATUS_NOT_ENOUGH_DATA;
    }

-    if (!memcmp(buf, "ALPH", TAG_SIZE)) {         // A valid ALPH header.
+    if (!memcmp(buf, "ALPH", TAG_SIZE)) {  // A valid ALPH header.
      *alpha_data = buf + CHUNK_HEADER_SIZE;
      *alpha_size = chunk_size;
    }
@@ -222,16 +232,20 @@ static VP8StatusCode ParseOptionalChunks(const uint8_t** const data,
 // If a VP8/VP8L chunk is found, *chunk_size is set to the total number of bytes
 // extracted from the VP8/VP8L chunk header.
 // The flag '*is_lossless' is set to 1 in case of VP8L chunk / raw VP8L data.
-static VP8StatusCode ParseVP8Header(const uint8_t** const data_ptr,
-                                    size_t* const data_size, int have_all_data,
-                                    size_t riff_size, size_t* const chunk_size,
-                                    int* const is_lossless) {
-  const uint8_t* const data = *data_ptr;
+static VP8StatusCode ParseVP8Header(const uint8_t* WEBP_COUNTED_BY(*data_size) *
+                                        WEBP_SINGLE const data_ptr,
+                                    size_t* WEBP_SINGLE const data_size,
+                                    int have_all_data, size_t riff_size,
+                                    size_t* WEBP_SINGLE const chunk_size,
+                                    int* WEBP_SINGLE const is_lossless) {
+  const size_t local_data_size = *data_size;
+  const uint8_t* WEBP_COUNTED_BY(local_data_size) const data = *data_ptr;
  const int is_vp8 = !memcmp(data, "VP8 ", TAG_SIZE);
  const int is_vp8l = !memcmp(data, "VP8L", TAG_SIZE);
  const uint32_t minimal_size =
      TAG_SIZE + CHUNK_HEADER_SIZE;  // "WEBP" + "VP8 nnnn" OR
                                     // "WEBP" + "VP8Lnnnn"
+  (void)local_data_size;
  assert(data != NULL);
  assert(data_size != NULL);
  assert(chunk_size != NULL);
@@ -252,8 +266,8 @@ static VP8StatusCode ParseVP8Header(const uint8_t** const data_ptr,
    }
    // Skip over CHUNK_HEADER_SIZE bytes from VP8/VP8L Header.
    *chunk_size = size;
-    *data_ptr += CHUNK_HEADER_SIZE;
    *data_size -= CHUNK_HEADER_SIZE;
+    *data_ptr += CHUNK_HEADER_SIZE;
    *is_lossless = is_vp8l;
  } else {
    // Raw VP8/VP8L bitstream (no header).
@@ -277,14 +291,13 @@ static VP8StatusCode ParseVP8Header(const uint8_t** const data_ptr,
 // RIFF + VP8X + (optional chunks) + VP8(L)
 // ALPH + VP8 <-- Not a valid WebP format: only allowed for internal purpose.
 // VP8(L)     <-- Not a valid WebP format: only allowed for internal purpose.
-static VP8StatusCode ParseHeadersInternal(const uint8_t* data,
-                                          size_t data_size,
-                                          int* const width,
-                                          int* const height,
-                                          int* const has_alpha,
-                                          int* const has_animation,
-                                          int* const format,
-                                          WebPHeaderStructure* const headers) {
+static VP8StatusCode ParseHeadersInternal(
+    const uint8_t* WEBP_COUNTED_BY(data_size_param) data_param,
+    size_t data_size_param, int* const width, int* const height,
+    int* const has_alpha, int* const has_animation, int* const format,
+    WebPHeaderStructure* const headers) {
+  size_t data_size = data_size_param;
+  const uint8_t* WEBP_COUNTED_BY(data_size) data = data_param;
  int canvas_width = 0;
  int canvas_height = 0;
  int image_width = 0;
@@ -300,22 +313,22 @@ static VP8StatusCode ParseHeadersInternal(const uint8_t* data,
  if (data == NULL || data_size < RIFF_HEADER_SIZE) {
    return VP8_STATUS_NOT_ENOUGH_DATA;
  }
-  memset(&hdrs, 0, sizeof(hdrs));
+  WEBP_UNSAFE_MEMSET(&hdrs, 0, sizeof(hdrs));
  hdrs.data = data;
  hdrs.data_size = data_size;

  // Skip over RIFF header.
  status = ParseRIFF(&data, &data_size, have_all_data, &hdrs.riff_size);
  if (status != VP8_STATUS_OK) {
-    return status;   // Wrong RIFF header / insufficient data.
+    return status;  // Wrong RIFF header / insufficient data.
  }
  found_riff = (hdrs.riff_size > 0);

  // Skip over VP8X.
  {
    uint32_t flags = 0;
-    status = ParseVP8X(&data, &data_size, &found_vp8x,
-                       &canvas_width, &canvas_height, &flags);
+    status = ParseVP8X(&data, &data_size, &found_vp8x, &canvas_width,
+                       &canvas_height, &flags);
    if (status != VP8_STATUS_OK) {
      return status;  // Wrong VP8X / insufficient data.
    }
@@ -327,7 +340,7 @@ static VP8StatusCode ParseHeadersInternal(const uint8_t* data,
    }
    if (has_alpha != NULL) *has_alpha = !!(flags & ALPHA_FLAG);
    if (has_animation != NULL) *has_animation = animation_present;
-    if (format != NULL) *format = 0;   // default = undefined
+    if (format != NULL) *format = 0;  // default = undefined

    image_width = canvas_width;
    image_height = canvas_height;
@@ -345,11 +358,16 @@ static VP8StatusCode ParseHeadersInternal(const uint8_t* data,
  // Skip over optional chunks if data started with "RIFF + VP8X" or "ALPH".
  if ((found_riff && found_vp8x) ||
      (!found_riff && !found_vp8x && !memcmp(data, "ALPH", TAG_SIZE))) {
+    size_t local_alpha_data_size = 0;
+    const uint8_t* WEBP_COUNTED_BY(local_alpha_data_size) local_alpha_data =
+        NULL;
    status = ParseOptionalChunks(&data, &data_size, hdrs.riff_size,
-                                 &hdrs.alpha_data, &hdrs.alpha_data_size);
+                                 &local_alpha_data, &local_alpha_data_size);
    if (status != VP8_STATUS_OK) {
      goto ReturnWidthHeight;  // Invalid chunk size / insufficient data.
    }
+    hdrs.alpha_data = local_alpha_data;
+    hdrs.alpha_data_size = local_alpha_data_size;
  }

  // Skip over VP8/VP8L header.
@@ -398,7 +416,7 @@ static VP8StatusCode ParseHeadersInternal(const uint8_t* data,
    assert((uint64_t)(data - headers->data) < MAX_CHUNK_PAYLOAD);
    assert(headers->offset == headers->data_size - data_size);
  }
- ReturnWidthHeight:
+ReturnWidthHeight:
  if (status == VP8_STATUS_OK ||
      (status == VP8_STATUS_NOT_ENOUGH_DATA && found_vp8x && headers == NULL)) {
    if (has_alpha != NULL) {
@@ -420,9 +438,13 @@ VP8StatusCode WebPParseHeaders(WebPHeaderStructure* const headers) {
  int has_animation = 0;
  assert(headers != NULL);
  // fill out headers, ignore width/height/has_alpha.
-  status = ParseHeadersInternal(headers->data, headers->data_size,
-                                NULL, NULL, NULL, &has_animation,
-                                NULL, headers);
+  {
+    const uint8_t* WEBP_BIDI_INDEXABLE const bounded_data =
+        WEBP_UNSAFE_FORGE_BIDI_INDEXABLE(const uint8_t*, headers->data,
+                                         headers->data_size);
+    status = ParseHeadersInternal(bounded_data, headers->data_size, NULL, NULL,
+                                  NULL, &has_animation, NULL, headers);
+  }
  if (status == VP8_STATUS_OK || status == VP8_STATUS_NOT_ENOUGH_DATA) {
    // The WebPDemux API + libwebp can be used to decode individual
    // uncomposited frames or the WebPAnimDecoder can be used to fully
@@ -439,7 +461,7 @@ VP8StatusCode WebPParseHeaders(WebPHeaderStructure* const headers) {

 void WebPResetDecParams(WebPDecParams* const params) {
  if (params != NULL) {
-    memset(params, 0, sizeof(*params));
+    WEBP_UNSAFE_MEMSET(params, 0, sizeof(*params));
  }
 }

@@ -447,9 +469,9 @@ void WebPResetDecParams(WebPDecParams* const params) {
 // "Into" decoding variants

 // Main flow
-WEBP_NODISCARD static VP8StatusCode DecodeInto(const uint8_t* const data,
-                                               size_t data_size,
-                                               WebPDecParams* const params) {
+WEBP_NODISCARD static VP8StatusCode DecodeInto(
+    const uint8_t* WEBP_COUNTED_BY(data_size) const data, size_t data_size,
+    WebPDecParams* const params) {
  VP8StatusCode status;
  VP8Io io;
  WebPHeaderStructure headers;
@@ -457,7 +479,7 @@ WEBP_NODISCARD static VP8StatusCode DecodeInto(const uint8_t* const data,
  headers.data = data;
  headers.data_size = data_size;
  headers.have_all_data = 1;
-  status = WebPParseHeaders(&headers);   // Process Pre-VP8 chunks.
+  status = WebPParseHeaders(&headers);  // Process Pre-VP8 chunks.
  if (status != VP8_STATUS_OK) {
    return status;
  }
@@ -475,23 +497,23 @@ WEBP_NODISCARD static VP8StatusCode DecodeInto(const uint8_t* const data,
    if (dec == NULL) {
      return VP8_STATUS_OUT_OF_MEMORY;
    }
-    dec->alpha_data_ = headers.alpha_data;
-    dec->alpha_data_size_ = headers.alpha_data_size;
+    dec->alpha_data = headers.alpha_data;
+    dec->alpha_data_size = headers.alpha_data_size;

    // Decode bitstream header, update io->width/io->height.
    if (!VP8GetHeaders(dec, &io)) {
-      status = dec->status_;   // An error occurred. Grab error status.
+      status = dec->status;  // An error occurred. Grab error status.
    } else {
      // Allocate/check output buffers.
      status = WebPAllocateDecBuffer(io.width, io.height, params->options,
                                     params->output);
      if (status == VP8_STATUS_OK) {  // Decode
        // This change must be done before calling VP8Decode()
-        dec->mt_method_ = VP8GetThreadMethod(params->options, &headers,
-                                             io.width, io.height);
+        dec->mt_method =
+            VP8GetThreadMethod(params->options, &headers, io.width, io.height);
        VP8InitDithering(params->options, dec);
        if (!VP8Decode(dec, &io)) {
-          status = dec->status_;
+          status = dec->status;
        }
      }
    }
@@ -502,14 +524,14 @@ WEBP_NODISCARD static VP8StatusCode DecodeInto(const uint8_t* const data,
      return VP8_STATUS_OUT_OF_MEMORY;
    }
    if (!VP8LDecodeHeader(dec, &io)) {
-      status = dec->status_;   // An error occurred. Grab error status.
+      status = dec->status;  // An error occurred. Grab error status.
    } else {
      // Allocate/check output buffers.
      status = WebPAllocateDecBuffer(io.width, io.height, params->options,
                                     params->output);
      if (status == VP8_STATUS_OK) {  // Decode
        if (!VP8LDecodeImage(dec)) {
-          status = dec->status_;
+          status = dec->status;
        }
      }
    }
@@ -529,11 +551,10 @@ WEBP_NODISCARD static VP8StatusCode DecodeInto(const uint8_t* const data,
 }

 // Helpers
-WEBP_NODISCARD static uint8_t* DecodeIntoRGBABuffer(WEBP_CSP_MODE colorspace,
-                                                    const uint8_t* const data,
-                                                    size_t data_size,
-                                                    uint8_t* const rgba,
-                                                    int stride, size_t size) {
+WEBP_NODISCARD static uint8_t* DecodeIntoRGBABuffer(
+    WEBP_CSP_MODE colorspace,
+    const uint8_t* WEBP_COUNTED_BY(data_size) const data, size_t data_size,
+    uint8_t* WEBP_COUNTED_BY(size) const rgba, int stride, size_t size) {
  WebPDecParams params;
  WebPDecBuffer buf;
  if (rgba == NULL || !WebPInitDecBuffer(&buf)) {
@@ -541,10 +562,10 @@ WEBP_NODISCARD static uint8_t* DecodeIntoRGBABuffer(WEBP_CSP_MODE colorspace,
  }
  WebPResetDecParams(&params);
  params.output = &buf;
-  buf.colorspace    = colorspace;
-  buf.u.RGBA.rgba   = rgba;
+  buf.colorspace = colorspace;
+  buf.u.RGBA.rgba = rgba;
  buf.u.RGBA.stride = stride;
-  buf.u.RGBA.size   = size;
+  buf.u.RGBA.size = size;
  buf.is_external_memory = 1;
  if (DecodeInto(data, data_size, &params) != VP8_STATUS_OK) {
    return NULL;
@@ -552,50 +573,63 @@ WEBP_NODISCARD static uint8_t* DecodeIntoRGBABuffer(WEBP_CSP_MODE colorspace,
  return rgba;
 }

-uint8_t* WebPDecodeRGBInto(const uint8_t* data, size_t data_size,
-                           uint8_t* output, size_t size, int stride) {
+uint8_t* WebPDecodeRGBInto(const uint8_t* WEBP_COUNTED_BY(data_size) data,
+                           size_t data_size,
+                           uint8_t* WEBP_COUNTED_BY(size) output, size_t size,
+                           int stride) {
  return DecodeIntoRGBABuffer(MODE_RGB, data, data_size, output, stride, size);
 }

-uint8_t* WebPDecodeRGBAInto(const uint8_t* data, size_t data_size,
-                            uint8_t* output, size_t size, int stride) {
+uint8_t* WebPDecodeRGBAInto(const uint8_t* WEBP_COUNTED_BY(data_size) data,
+                            size_t data_size,
+                            uint8_t* WEBP_COUNTED_BY(size) output, size_t size,
+                            int stride) {
  return DecodeIntoRGBABuffer(MODE_RGBA, data, data_size, output, stride, size);
 }

-uint8_t* WebPDecodeARGBInto(const uint8_t* data, size_t data_size,
-                            uint8_t* output, size_t size, int stride) {
+uint8_t* WebPDecodeARGBInto(const uint8_t* WEBP_COUNTED_BY(data_size) data,
+                            size_t data_size,
+                            uint8_t* WEBP_COUNTED_BY(size) output, size_t size,
+                            int stride) {
  return DecodeIntoRGBABuffer(MODE_ARGB, data, data_size, output, stride, size);
 }

-uint8_t* WebPDecodeBGRInto(const uint8_t* data, size_t data_size,
-                           uint8_t* output, size_t size, int stride) {
+uint8_t* WebPDecodeBGRInto(const uint8_t* WEBP_COUNTED_BY(data_size) data,
+                           size_t data_size,
+                           uint8_t* WEBP_COUNTED_BY(size) output, size_t size,
+                           int stride) {
  return DecodeIntoRGBABuffer(MODE_BGR, data, data_size, output, stride, size);
 }

-uint8_t* WebPDecodeBGRAInto(const uint8_t* data, size_t data_size,
-                            uint8_t* output, size_t size, int stride) {
+uint8_t* WebPDecodeBGRAInto(const uint8_t* WEBP_COUNTED_BY(data_size) data,
+                            size_t data_size,
+                            uint8_t* WEBP_COUNTED_BY(size) output, size_t size,
+                            int stride) {
  return DecodeIntoRGBABuffer(MODE_BGRA, data, data_size, output, stride, size);
 }

-uint8_t* WebPDecodeYUVInto(const uint8_t* data, size_t data_size,
-                           uint8_t* luma, size_t luma_size, int luma_stride,
-                           uint8_t* u, size_t u_size, int u_stride,
-                           uint8_t* v, size_t v_size, int v_stride) {
+uint8_t* WebPDecodeYUVInto(const uint8_t* WEBP_COUNTED_BY(data_size) data,
+                           size_t data_size,
+                           uint8_t* WEBP_COUNTED_BY(luma_size) luma,
+                           size_t luma_size, int luma_stride,
+                           uint8_t* WEBP_COUNTED_BY(u_size) u, size_t u_size,
+                           int u_stride, uint8_t* WEBP_COUNTED_BY(v_size) v,
+                           size_t v_size, int v_stride) {
  WebPDecParams params;
  WebPDecBuffer output;
  if (luma == NULL || !WebPInitDecBuffer(&output)) return NULL;
  WebPResetDecParams(&params);
  params.output = &output;
-  output.colorspace      = MODE_YUV;
-  output.u.YUVA.y        = luma;
+  output.colorspace = MODE_YUV;
+  output.u.YUVA.y = luma;
  output.u.YUVA.y_stride = luma_stride;
-  output.u.YUVA.y_size   = luma_size;
-  output.u.YUVA.u        = u;
+  output.u.YUVA.y_size = luma_size;
+  output.u.YUVA.u = u;
  output.u.YUVA.u_stride = u_stride;
-  output.u.YUVA.u_size   = u_size;
-  output.u.YUVA.v        = v;
+  output.u.YUVA.u_size = u_size;
+  output.u.YUVA.v = v;
  output.u.YUVA.v_stride = v_stride;
-  output.u.YUVA.v_size   = v_size;
+  output.u.YUVA.v_size = v_size;
  output.is_external_memory = 1;
  if (DecodeInto(data, data_size, &params) != VP8_STATUS_OK) {
    return NULL;
@@ -606,7 +640,8 @@ uint8_t* WebPDecodeYUVInto(const uint8_t* data, size_t data_size,
 //------------------------------------------------------------------------------

 WEBP_NODISCARD static uint8_t* Decode(WEBP_CSP_MODE mode,
-                                      const uint8_t* const data,
+                                      const uint8_t* WEBP_COUNTED_BY(data_size)
+                                          const data,
                                      size_t data_size, int* const width,
                                      int* const height,
                                      WebPDecBuffer* const keep_info) {
@@ -631,50 +666,50 @@ WEBP_NODISCARD static uint8_t* Decode(WEBP_CSP_MODE mode,
  if (DecodeInto(data, data_size, &params) != VP8_STATUS_OK) {
    return NULL;
  }
-  if (keep_info != NULL) {    // keep track of the side-info
+  if (keep_info != NULL) {  // keep track of the side-info
    WebPCopyDecBuffer(&output, keep_info);
  }
  // return decoded samples (don't clear 'output'!)
  return WebPIsRGBMode(mode) ? output.u.RGBA.rgba : output.u.YUVA.y;
 }

-uint8_t* WebPDecodeRGB(const uint8_t* data, size_t data_size,
-                       int* width, int* height) {
+uint8_t* WebPDecodeRGB(const uint8_t* WEBP_COUNTED_BY(data_size) data,
+                       size_t data_size, int* width, int* height) {
  return Decode(MODE_RGB, data, data_size, width, height, NULL);
 }

-uint8_t* WebPDecodeRGBA(const uint8_t* data, size_t data_size,
-                        int* width, int* height) {
+uint8_t* WebPDecodeRGBA(const uint8_t* WEBP_COUNTED_BY(data_size) data,
+                        size_t data_size, int* width, int* height) {
  return Decode(MODE_RGBA, data, data_size, width, height, NULL);
 }

-uint8_t* WebPDecodeARGB(const uint8_t* data, size_t data_size,
-                        int* width, int* height) {
+uint8_t* WebPDecodeARGB(const uint8_t* WEBP_COUNTED_BY(data_size) data,
+                        size_t data_size, int* width, int* height) {
  return Decode(MODE_ARGB, data, data_size, width, height, NULL);
 }

-uint8_t* WebPDecodeBGR(const uint8_t* data, size_t data_size,
-                       int* width, int* height) {
+uint8_t* WebPDecodeBGR(const uint8_t* WEBP_COUNTED_BY(data_size) data,
+                       size_t data_size, int* width, int* height) {
  return Decode(MODE_BGR, data, data_size, width, height, NULL);
 }

-uint8_t* WebPDecodeBGRA(const uint8_t* data, size_t data_size,
-                        int* width, int* height) {
+uint8_t* WebPDecodeBGRA(const uint8_t* WEBP_COUNTED_BY(data_size) data,
+                        size_t data_size, int* width, int* height) {
  return Decode(MODE_BGRA, data, data_size, width, height, NULL);
 }

-uint8_t* WebPDecodeYUV(const uint8_t* data, size_t data_size,
-                       int* width, int* height, uint8_t** u, uint8_t** v,
-                       int* stride, int* uv_stride) {
+uint8_t* WebPDecodeYUV(const uint8_t* WEBP_COUNTED_BY(data_size) data,
+                       size_t data_size, int* width, int* height, uint8_t** u,
+                       uint8_t** v, int* stride, int* uv_stride) {
  // data, width and height are checked by Decode().
  if (u == NULL || v == NULL || stride == NULL || uv_stride == NULL) {
    return NULL;
  }

  {
-    WebPDecBuffer output;   // only to preserve the side-infos
-    uint8_t* const out = Decode(MODE_YUV, data, data_size,
-                                width, height, &output);
+    WebPDecBuffer output;  // only to preserve the side-infos
+    uint8_t* const out =
+        Decode(MODE_YUV, data, data_size, width, height, &output);

    if (out != NULL) {
      const WebPYUVABuffer* const buf = &output.u.YUVA;
@@ -690,10 +725,12 @@ uint8_t* WebPDecodeYUV(const uint8_t* data, size_t data_size,

 static void DefaultFeatures(WebPBitstreamFeatures* const features) {
  assert(features != NULL);
-  memset(features, 0, sizeof(*features));
+  WEBP_UNSAFE_MEMSET(features, 0, sizeof(*features));
 }

-static VP8StatusCode GetFeatures(const uint8_t* const data, size_t data_size,
+static VP8StatusCode GetFeatures(const uint8_t* WEBP_COUNTED_BY(data_size)
+                                     const data,
+                                 size_t data_size,
                                 WebPBitstreamFeatures* const features) {
  if (features == NULL || data == NULL) {
    return VP8_STATUS_INVALID_PARAM;
@@ -701,17 +738,16 @@ static VP8StatusCode GetFeatures(const uint8_t* const data, size_t data_size,
  DefaultFeatures(features);

  // Only parse enough of the data to retrieve the features.
-  return ParseHeadersInternal(data, data_size,
-                              &features->width, &features->height,
-                              &features->has_alpha, &features->has_animation,
-                              &features->format, NULL);
+  return ParseHeadersInternal(
+      data, data_size, &features->width, &features->height,
+      &features->has_alpha, &features->has_animation, &features->format, NULL);
 }

 //------------------------------------------------------------------------------
 // WebPGetInfo()

-int WebPGetInfo(const uint8_t* data, size_t data_size,
-                int* width, int* height) {
+int WebPGetInfo(const uint8_t* WEBP_COUNTED_BY(data_size) data,
+                size_t data_size, int* width, int* height) {
  WebPBitstreamFeatures features;

  if (GetFeatures(data, data_size, &features) != VP8_STATUS_OK) {
@@ -719,7 +755,7 @@ int WebPGetInfo(const uint8_t* data, size_t data_size,
  }

  if (width != NULL) {
-    *width  = features.width;
+    *width = features.width;
  }
  if (height != NULL) {
    *height = features.height;
@@ -731,15 +767,14 @@ int WebPGetInfo(const uint8_t* data, size_t data_size,
 //------------------------------------------------------------------------------
 // Advance decoding API

-int WebPInitDecoderConfigInternal(WebPDecoderConfig* config,
-                                  int version) {
+int WebPInitDecoderConfigInternal(WebPDecoderConfig* config, int version) {
  if (WEBP_ABI_IS_INCOMPATIBLE(version, WEBP_DECODER_ABI_VERSION)) {
-    return 0;   // version mismatch
+    return 0;  // version mismatch
  }
  if (config == NULL) {
    return 0;
  }
-  memset(config, 0, sizeof(*config));
+  WEBP_UNSAFE_MEMSET(config, 0, sizeof(*config));
  DefaultFeatures(&config->input);
  if (!WebPInitDecBuffer(&config->output)) {
    return 0;
@@ -747,11 +782,68 @@ int WebPInitDecoderConfigInternal(WebPDecoderConfig* config,
  return 1;
 }

-VP8StatusCode WebPGetFeaturesInternal(const uint8_t* data, size_t data_size,
+static int WebPCheckCropDimensionsBasic(int x, int y, int w, int h) {
+  return !(x < 0 || y < 0 || w <= 0 || h <= 0);
+}
+
+int WebPValidateDecoderConfig(const WebPDecoderConfig* config) {
+  const WebPDecoderOptions* options;
+  if (config == NULL) return 0;
+  if (!IsValidColorspace(config->output.colorspace)) {
+    return 0;
+  }
+
+  options = &config->options;
+  // bypass_filtering, no_fancy_upsampling, use_cropping, use_scaling,
+  // use_threads, flip can be any integer and are interpreted as boolean.
+
+  // Check for cropping.
+  if (options->use_cropping && !WebPCheckCropDimensionsBasic(
+                                   options->crop_left, options->crop_top,
+                                   options->crop_width, options->crop_height)) {
+    return 0;
+  }
+  // Check for scaling.
+  if (options->use_scaling &&
+      (options->scaled_width < 0 || options->scaled_height < 0 ||
+       (options->scaled_width == 0 && options->scaled_height == 0))) {
+    return 0;
+  }
+
+  // In case the WebPBitstreamFeatures has been filled in, check further.
+  if (config->input.width > 0 || config->input.height > 0) {
+    int scaled_width = options->scaled_width;
+    int scaled_height = options->scaled_height;
+    if (options->use_cropping &&
+        !WebPCheckCropDimensions(config->input.width, config->input.height,
+                                 options->crop_left, options->crop_top,
+                                 options->crop_width, options->crop_height)) {
+      return 0;
+    }
+    if (options->use_scaling && !WebPRescalerGetScaledDimensions(
+                                    config->input.width, config->input.height,
+                                    &scaled_width, &scaled_height)) {
+      return 0;
+    }
+  }
+
+  // Check for dithering.
+  if (options->dithering_strength < 0 || options->dithering_strength > 100 ||
+      options->alpha_dithering_strength < 0 ||
+      options->alpha_dithering_strength > 100) {
+    return 0;
+  }
+
+  return 1;
+}
+
+VP8StatusCode WebPGetFeaturesInternal(const uint8_t* WEBP_COUNTED_BY(data_size)
+                                          data,
+                                      size_t data_size,
                                      WebPBitstreamFeatures* features,
                                      int version) {
  if (WEBP_ABI_IS_INCOMPATIBLE(version, WEBP_DECODER_ABI_VERSION)) {
-    return VP8_STATUS_INVALID_PARAM;   // version mismatch
+    return VP8_STATUS_INVALID_PARAM;  // version mismatch
  }
  if (features == NULL) {
    return VP8_STATUS_INVALID_PARAM;
@@ -759,8 +851,8 @@ VP8StatusCode WebPGetFeaturesInternal(const uint8_t* data, size_t data_size,
  return GetFeatures(data, data_size, features);
 }

-VP8StatusCode WebPDecode(const uint8_t* data, size_t data_size,
-                         WebPDecoderConfig* config) {
+VP8StatusCode WebPDecode(const uint8_t* WEBP_COUNTED_BY(data_size) data,
+                         size_t data_size, WebPDecoderConfig* config) {
  WebPDecParams params;
  VP8StatusCode status;

@@ -804,10 +896,10 @@ VP8StatusCode WebPDecode(const uint8_t* data, size_t data_size,
 //------------------------------------------------------------------------------
 // Cropping and rescaling.

-int WebPCheckCropDimensions(int image_width, int image_height,
-                            int x, int y, int w, int h) {
-  return !(x < 0 || y < 0 || w <= 0 || h <= 0 ||
-           x >= image_width || w > image_width || w > image_width - x ||
+int WebPCheckCropDimensions(int image_width, int image_height, int x, int y,
+                            int w, int h) {
+  return WebPCheckCropDimensionsBasic(x, y, w, h) &&
+         !(x >= image_width || w > image_width || w > image_width - x ||
           y >= image_height || h > image_height || h > image_height - y);
 }

@@ -824,7 +916,7 @@ int WebPIoInitFromOptions(const WebPDecoderOptions* const options,
    h = options->crop_height;
    x = options->crop_left;
    y = options->crop_top;
-    if (!WebPIsRGBMode(src_colorspace)) {   // only snap for YUV420
+    if (!WebPIsRGBMode(src_colorspace)) {  // only snap for YUV420
      x &= ~1;
      y &= ~1;
    }
@@ -832,9 +924,9 @@ int WebPIoInitFromOptions(const WebPDecoderOptions* const options,
      return 0;  // out of frame boundary error
    }
  }
-  io->crop_left   = x;
-  io->crop_top    = y;
-  io->crop_right  = x + w;
+  io->crop_left = x;
+  io->crop_top = y;
+  io->crop_right = x + w;
  io->crop_bottom = y + h;
  io->mb_w = w;
  io->mb_h = h;
@@ -861,8 +953,8 @@ int WebPIoInitFromOptions(const WebPDecoderOptions* const options,

  if (io->use_scaling) {
    // disable filter (only for large downscaling ratio).
-    io->bypass_filtering |= (io->scaled_width < W * 3 / 4) &&
-                            (io->scaled_height < H * 3 / 4);
+    io->bypass_filtering |=
+        (io->scaled_width < W * 3 / 4) && (io->scaled_height < H * 3 / 4);
    io->fancy_upsampling = 0;
  }
  return 1;
--- a/src/dec/webpi_dec.h
+++ b/src/dec/webpi_dec.h
@@ -18,9 +18,14 @@
 extern "C" {
 #endif

-#include "src/utils/rescaler_utils.h"
+#include <stddef.h>
+
 #include "src/dec/vp8_dec.h"
+#include "src/utils/rescaler_utils.h"
 #include "src/webp/decode.h"
+#include "src/webp/types.h"
+
+WEBP_ASSUME_UNSAFE_INDEXABLE_ABI

 //------------------------------------------------------------------------------
 // WebPDecParams: Decoding output parameters. Transient internal object.
@@ -33,15 +38,15 @@ typedef int (*OutputRowFunc)(WebPDecParams* const p, int y_pos,
                             int max_out_lines);

 struct WebPDecParams {
-  WebPDecBuffer* output;             // output buffer.
-  uint8_t* tmp_y, *tmp_u, *tmp_v;    // cache for the fancy upsampler
-                                     // or used for tmp rescaling
+  WebPDecBuffer* output;           // output buffer.
+  uint8_t *tmp_y, *tmp_u, *tmp_v;  // cache for the fancy upsampler
+                                   // or used for tmp rescaling

-  int last_y;                 // coordinate of the line that was last output
+  int last_y;  // coordinate of the line that was last output
  const WebPDecoderOptions* options;  // if not NULL, use alt decoding features

-  WebPRescaler* scaler_y, *scaler_u, *scaler_v, *scaler_a;  // rescalers
-  void* memory;                  // overall scratch memory for the output work.
+  WebPRescaler *scaler_y, *scaler_u, *scaler_v, *scaler_a;  // rescalers
+  void* memory;  // overall scratch memory for the output work.

  OutputFunc emit;               // output RGB or YUV samples
  OutputAlphaFunc emit_alpha;    // output alpha channel
@@ -56,15 +61,16 @@ void WebPResetDecParams(WebPDecParams* const params);

 // Structure storing a description of the RIFF headers.
 typedef struct {
-  const uint8_t* data;         // input buffer
-  size_t data_size;            // input buffer size
-  int have_all_data;           // true if all data is known to be available
-  size_t offset;               // offset to main data chunk (VP8 or VP8L)
-  const uint8_t* alpha_data;   // points to alpha chunk (if present)
-  size_t alpha_data_size;      // alpha chunk size
-  size_t compressed_size;      // VP8/VP8L compressed data size
-  size_t riff_size;            // size of the riff payload (or 0 if absent)
-  int is_lossless;             // true if a VP8L chunk is present
+  const uint8_t* WEBP_COUNTED_BY(data_size) data;  // input buffer
+  size_t data_size;                                // input buffer size
+  int have_all_data;  // true if all data is known to be available
+  size_t offset;      // offset to main data chunk (VP8 or VP8L)
+  const uint8_t* WEBP_COUNTED_BY(alpha_data_size)
+      alpha_data;          // points to alpha chunk (if present)
+  size_t alpha_data_size;  // alpha chunk size
+  size_t compressed_size;  // VP8/VP8L compressed data size
+  size_t riff_size;        // size of the riff payload (or 0 if absent)
+  int is_lossless;         // true if a VP8L chunk is present
 } WebPHeaderStructure;

 // Skips over all valid chunks prior to the first VP8/VP8L frame header.
@@ -79,8 +85,8 @@ VP8StatusCode WebPParseHeaders(WebPHeaderStructure* const headers);
 // Misc utils

 // Returns true if crop dimensions are within image bounds.
-int WebPCheckCropDimensions(int image_width, int image_height,
-                            int x, int y, int w, int h);
+int WebPCheckCropDimensions(int image_width, int image_height, int x, int y,
+                            int w, int h);

 // Initializes VP8Io with custom setup, io and teardown functions. The default
 // hooks will use the supplied 'params' as io->opaque handle.
@@ -133,7 +139,7 @@ int WebPAvoidSlowMemory(const WebPDecBuffer* const output,
 //------------------------------------------------------------------------------

 #ifdef __cplusplus
-}    // extern "C"
+}  // extern "C"
 #endif

 #endif  // WEBP_DEC_WEBPI_DEC_H_
--- a/src/demux/Makefile.am
+++ b/src/demux/Makefile.am
@@ -13,6 +13,6 @@ noinst_HEADERS =
 noinst_HEADERS += ../webp/format_constants.h

 libwebpdemux_la_LIBADD = ../libwebp.la
-libwebpdemux_la_LDFLAGS = -no-undefined -version-info 2:15:0
+libwebpdemux_la_LDFLAGS = -no-undefined -version-info 2:17:0
 libwebpdemuxincludedir = $(includedir)/webp
 pkgconfig_DATA = libwebpdemux.pc
--- a/src/demux/anim_decode.c
+++ b/src/demux/anim_decode.c
@@ -20,8 +20,12 @@
 #include "src/utils/utils.h"
 #include "src/webp/decode.h"
 #include "src/webp/demux.h"
+#include "src/webp/mux.h"
+#include "src/webp/mux_types.h"
 #include "src/webp/types.h"

+WEBP_ASSUME_UNSAFE_INDEXABLE_ABI
+
 #define NUM_CHANNELS 4

 // Channel extraction from a uint32_t representation of a uint8_t RGBA/BGRA
@@ -39,19 +43,19 @@ static void BlendPixelRowPremult(uint32_t* const src, const uint32_t* const dst,
                                 int num_pixels);

 struct WebPAnimDecoder {
-  WebPDemuxer* demux_;             // Demuxer created from given WebP bitstream.
-  WebPDecoderConfig config_;       // Decoder config.
+  WebPDemuxer* demux;        // Demuxer created from given WebP bitstream.
+  WebPDecoderConfig config;  // Decoder config.
  // Note: we use a pointer to a function blending multiple pixels at a time to
  // allow possible inlining of per-pixel blending function.
-  BlendRowFunc blend_func_;        // Pointer to the chose blend row function.
-  WebPAnimInfo info_;              // Global info about the animation.
-  uint8_t* curr_frame_;            // Current canvas (not disposed).
-  uint8_t* prev_frame_disposed_;   // Previous canvas (properly disposed).
-  int prev_frame_timestamp_;       // Previous frame timestamp (milliseconds).
-  WebPIterator prev_iter_;         // Iterator object for previous frame.
-  int prev_frame_was_keyframe_;    // True if previous frame was a keyframe.
-  int next_frame_;                 // Index of the next frame to be decoded
-                                   // (starting from 1).
+  BlendRowFunc blend_func;       // Pointer to the chose blend row function.
+  WebPAnimInfo info;             // Global info about the animation.
+  uint8_t* curr_frame;           // Current canvas (not disposed).
+  uint8_t* prev_frame_disposed;  // Previous canvas (properly disposed).
+  int prev_frame_timestamp;      // Previous frame timestamp (milliseconds).
+  WebPIterator prev_iter;        // Iterator object for previous frame.
+  int prev_frame_was_keyframe;   // True if previous frame was a keyframe.
+  int next_frame;                // Index of the next frame to be decoded
+                                 // (starting from 1).
 };

 static void DefaultDecoderOptions(WebPAnimDecoderOptions* const dec_options) {
@@ -73,17 +77,17 @@ WEBP_NODISCARD static int ApplyDecoderOptions(
    const WebPAnimDecoderOptions* const dec_options,
    WebPAnimDecoder* const dec) {
  WEBP_CSP_MODE mode;
-  WebPDecoderConfig* config = &dec->config_;
+  WebPDecoderConfig* config = &dec->config;
  assert(dec_options != NULL);

  mode = dec_options->color_mode;
-  if (mode != MODE_RGBA && mode != MODE_BGRA &&
-      mode != MODE_rgbA && mode != MODE_bgrA) {
+  if (mode != MODE_RGBA && mode != MODE_BGRA && mode != MODE_rgbA &&
+      mode != MODE_bgrA) {
    return 0;
  }
-  dec->blend_func_ = (mode == MODE_RGBA || mode == MODE_BGRA)
-                         ? &BlendPixelRowNonPremult
-                         : &BlendPixelRowPremult;
+  dec->blend_func = (mode == MODE_RGBA || mode == MODE_BGRA)
+                        ? &BlendPixelRowNonPremult
+                        : &BlendPixelRowPremult;
  if (!WebPInitDecoderConfig(config)) {
    return 0;
  }
@@ -123,34 +127,34 @@ WebPAnimDecoder* WebPAnimDecoderNewInternal(
  }
  if (!ApplyDecoderOptions(&options, dec)) goto Error;

-  dec->demux_ = WebPDemux(webp_data);
-  if (dec->demux_ == NULL) goto Error;
+  dec->demux = WebPDemux(webp_data);
+  if (dec->demux == NULL) goto Error;

-  dec->info_.canvas_width = WebPDemuxGetI(dec->demux_, WEBP_FF_CANVAS_WIDTH);
-  dec->info_.canvas_height = WebPDemuxGetI(dec->demux_, WEBP_FF_CANVAS_HEIGHT);
-  dec->info_.loop_count = WebPDemuxGetI(dec->demux_, WEBP_FF_LOOP_COUNT);
-  dec->info_.bgcolor = WebPDemuxGetI(dec->demux_, WEBP_FF_BACKGROUND_COLOR);
-  dec->info_.frame_count = WebPDemuxGetI(dec->demux_, WEBP_FF_FRAME_COUNT);
+  dec->info.canvas_width = WebPDemuxGetI(dec->demux, WEBP_FF_CANVAS_WIDTH);
+  dec->info.canvas_height = WebPDemuxGetI(dec->demux, WEBP_FF_CANVAS_HEIGHT);
+  dec->info.loop_count = WebPDemuxGetI(dec->demux, WEBP_FF_LOOP_COUNT);
+  dec->info.bgcolor = WebPDemuxGetI(dec->demux, WEBP_FF_BACKGROUND_COLOR);
+  dec->info.frame_count = WebPDemuxGetI(dec->demux, WEBP_FF_FRAME_COUNT);

  // Note: calloc() because we fill frame with zeroes as well.
-  dec->curr_frame_ = (uint8_t*)WebPSafeCalloc(
-      dec->info_.canvas_width * NUM_CHANNELS, dec->info_.canvas_height);
-  if (dec->curr_frame_ == NULL) goto Error;
-  dec->prev_frame_disposed_ = (uint8_t*)WebPSafeCalloc(
-      dec->info_.canvas_width * NUM_CHANNELS, dec->info_.canvas_height);
-  if (dec->prev_frame_disposed_ == NULL) goto Error;
+  dec->curr_frame = (uint8_t*)WebPSafeCalloc(
+      dec->info.canvas_width * NUM_CHANNELS, dec->info.canvas_height);
+  if (dec->curr_frame == NULL) goto Error;
+  dec->prev_frame_disposed = (uint8_t*)WebPSafeCalloc(
+      dec->info.canvas_width * NUM_CHANNELS, dec->info.canvas_height);
+  if (dec->prev_frame_disposed == NULL) goto Error;

  WebPAnimDecoderReset(dec);
  return dec;

- Error:
+Error:
  WebPAnimDecoderDelete(dec);
  return NULL;
 }

 int WebPAnimDecoderGetInfo(const WebPAnimDecoder* dec, WebPAnimInfo* info) {
  if (dec == NULL || info == NULL) return 0;
-  *info = dec->info_;
+  *info = dec->info;
  return 1;
 }

@@ -166,7 +170,7 @@ WEBP_NODISCARD static int ZeroFillCanvas(uint8_t* buf, uint32_t canvas_width,
  const uint64_t size =
      (uint64_t)canvas_width * canvas_height * NUM_CHANNELS * sizeof(*buf);
  if (!CheckSizeOverflow(size)) return 0;
-  memset(buf, 0, (size_t)size);
+  WEBP_UNSAFE_MEMSET(buf, 0, (size_t)size);
  return 1;
 }

@@ -177,7 +181,7 @@ static void ZeroFillFrameRect(uint8_t* buf, int buf_stride, int x_offset,
  assert(width * NUM_CHANNELS <= buf_stride);
  buf += y_offset * buf_stride + x_offset * NUM_CHANNELS;
  for (j = 0; j < height; ++j) {
-    memset(buf, 0, width * NUM_CHANNELS);
+    WEBP_UNSAFE_MEMSET(buf, 0, width * NUM_CHANNELS);
    buf += buf_stride;
  }
 }
@@ -188,20 +192,20 @@ WEBP_NODISCARD static int CopyCanvas(const uint8_t* src, uint8_t* dst,
  const uint64_t size = (uint64_t)width * height * NUM_CHANNELS;
  if (!CheckSizeOverflow(size)) return 0;
  assert(src != NULL && dst != NULL);
-  memcpy(dst, src, (size_t)size);
+  WEBP_UNSAFE_MEMCPY(dst, src, (size_t)size);
  return 1;
 }

 // Returns true if the current frame is a key-frame.
 static int IsKeyFrame(const WebPIterator* const curr,
                      const WebPIterator* const prev,
-                      int prev_frame_was_key_frame,
-                      int canvas_width, int canvas_height) {
+                      int prev_frame_was_key_frame, int canvas_width,
+                      int canvas_height) {
  if (curr->frame_num == 1) {
    return 1;
  } else if ((!curr->has_alpha || curr->blend_method == WEBP_MUX_NO_BLEND) &&
-             IsFullFrame(curr->width, curr->height,
-                         canvas_width, canvas_height)) {
+             IsFullFrame(curr->width, curr->height, canvas_width,
+                         canvas_height)) {
    return 1;
  } else {
    return (prev->dispose_method == WEBP_MUX_DISPOSE_BACKGROUND) &&
@@ -211,12 +215,11 @@ static int IsKeyFrame(const WebPIterator* const curr,
  }
 }

-
 // Blend a single channel of 'src' over 'dst', given their alpha channel values.
 // 'src' and 'dst' are assumed to be NOT pre-multiplied by alpha.
-static uint8_t BlendChannelNonPremult(uint32_t src, uint8_t src_a,
-                                      uint32_t dst, uint8_t dst_a,
-                                      uint32_t scale, int shift) {
+static uint8_t BlendChannelNonPremult(uint32_t src, uint8_t src_a, uint32_t dst,
+                                      uint8_t dst_a, uint32_t scale,
+                                      int shift) {
  const uint8_t src_channel = (src >> shift) & 0xff;
  const uint8_t dst_channel = (dst >> shift) & 0xff;
  const uint32_t blend_unscaled = src_channel * src_a + dst_channel * dst_a;
@@ -326,8 +329,8 @@ static void FindBlendRangeAtRow(const WebPIterator* const src,
  }
 }

-int WebPAnimDecoderGetNext(WebPAnimDecoder* dec,
-                           uint8_t** buf_ptr, int* timestamp_ptr) {
+int WebPAnimDecoderGetNext(WebPAnimDecoder* dec, uint8_t** buf_ptr,
+                           int* timestamp_ptr) {
  WebPIterator iter;
  uint32_t width;
  uint32_t height;
@@ -338,26 +341,25 @@ int WebPAnimDecoderGetNext(WebPAnimDecoder* dec,
  if (dec == NULL || buf_ptr == NULL || timestamp_ptr == NULL) return 0;
  if (!WebPAnimDecoderHasMoreFrames(dec)) return 0;

-  width = dec->info_.canvas_width;
-  height = dec->info_.canvas_height;
-  blend_row = dec->blend_func_;
+  width = dec->info.canvas_width;
+  height = dec->info.canvas_height;
+  blend_row = dec->blend_func;

  // Get compressed frame.
-  if (!WebPDemuxGetFrame(dec->demux_, dec->next_frame_, &iter)) {
+  if (!WebPDemuxGetFrame(dec->demux, dec->next_frame, &iter)) {
    return 0;
  }
-  timestamp = dec->prev_frame_timestamp_ + iter.duration;
+  timestamp = dec->prev_frame_timestamp + iter.duration;

  // Initialize.
-  is_key_frame = IsKeyFrame(&iter, &dec->prev_iter_,
-                            dec->prev_frame_was_keyframe_, width, height);
+  is_key_frame = IsKeyFrame(&iter, &dec->prev_iter,
+                            dec->prev_frame_was_keyframe, width, height);
  if (is_key_frame) {
-    if (!ZeroFillCanvas(dec->curr_frame_, width, height)) {
+    if (!ZeroFillCanvas(dec->curr_frame, width, height)) {
      goto Error;
    }
  } else {
-    if (!CopyCanvas(dec->prev_frame_disposed_, dec->curr_frame_,
-                    width, height)) {
+    if (!CopyCanvas(dec->prev_frame_disposed, dec->curr_frame, width, height)) {
      goto Error;
    }
  }
@@ -370,12 +372,12 @@ int WebPAnimDecoderGetNext(WebPAnimDecoder* dec,
    const uint64_t out_offset = (uint64_t)iter.y_offset * stride +
                                (uint64_t)iter.x_offset * NUM_CHANNELS;  // 53b
    const uint64_t size = (uint64_t)iter.height * stride;  // at most 25 + 27b
-    WebPDecoderConfig* const config = &dec->config_;
+    WebPDecoderConfig* const config = &dec->config;
    WebPRGBABuffer* const buf = &config->output.u.RGBA;
    if ((size_t)size != size) goto Error;
    buf->stride = (int)stride;
    buf->size = (size_t)size;
-    buf->rgba = dec->curr_frame_ + out_offset;
+    buf->rgba = dec->curr_frame + out_offset;

    if (WebPDecode(in, in_size, config) != VP8_STATUS_OK) {
      goto Error;
@@ -388,18 +390,17 @@ int WebPAnimDecoderGetNext(WebPAnimDecoder* dec,
  // that pixel in the previous frame if blending method of is WEBP_MUX_BLEND.
  if (iter.frame_num > 1 && iter.blend_method == WEBP_MUX_BLEND &&
      !is_key_frame) {
-    if (dec->prev_iter_.dispose_method == WEBP_MUX_DISPOSE_NONE) {
+    if (dec->prev_iter.dispose_method == WEBP_MUX_DISPOSE_NONE) {
      int y;
      // Blend transparent pixels with pixels in previous canvas.
      for (y = 0; y < iter.height; ++y) {
-        const size_t offset =
-            (iter.y_offset + y) * width + iter.x_offset;
-        blend_row((uint32_t*)dec->curr_frame_ + offset,
-                  (uint32_t*)dec->prev_frame_disposed_ + offset, iter.width);
+        const size_t offset = (iter.y_offset + y) * width + iter.x_offset;
+        blend_row((uint32_t*)dec->curr_frame + offset,
+                  (uint32_t*)dec->prev_frame_disposed + offset, iter.width);
      }
    } else {
      int y;
-      assert(dec->prev_iter_.dispose_method == WEBP_MUX_DISPOSE_BACKGROUND);
+      assert(dec->prev_iter.dispose_method == WEBP_MUX_DISPOSE_BACKGROUND);
      // We need to blend a transparent pixel with its value just after
      // initialization. That is, blend it with:
      // * Fully transparent pixel if it belongs to prevRect <-- No-op.
@@ -407,73 +408,73 @@ int WebPAnimDecoderGetNext(WebPAnimDecoder* dec,
      for (y = 0; y < iter.height; ++y) {
        const int canvas_y = iter.y_offset + y;
        int left1, width1, left2, width2;
-        FindBlendRangeAtRow(&iter, &dec->prev_iter_, canvas_y, &left1, &width1,
+        FindBlendRangeAtRow(&iter, &dec->prev_iter, canvas_y, &left1, &width1,
                            &left2, &width2);
        if (width1 > 0) {
          const size_t offset1 = canvas_y * width + left1;
-          blend_row((uint32_t*)dec->curr_frame_ + offset1,
-                    (uint32_t*)dec->prev_frame_disposed_ + offset1, width1);
+          blend_row((uint32_t*)dec->curr_frame + offset1,
+                    (uint32_t*)dec->prev_frame_disposed + offset1, width1);
        }
        if (width2 > 0) {
          const size_t offset2 = canvas_y * width + left2;
-          blend_row((uint32_t*)dec->curr_frame_ + offset2,
-                    (uint32_t*)dec->prev_frame_disposed_ + offset2, width2);
+          blend_row((uint32_t*)dec->curr_frame + offset2,
+                    (uint32_t*)dec->prev_frame_disposed + offset2, width2);
        }
      }
    }
  }

  // Update info of the previous frame and dispose it for the next iteration.
-  dec->prev_frame_timestamp_ = timestamp;
-  WebPDemuxReleaseIterator(&dec->prev_iter_);
-  dec->prev_iter_ = iter;
-  dec->prev_frame_was_keyframe_ = is_key_frame;
-  if (!CopyCanvas(dec->curr_frame_, dec->prev_frame_disposed_, width, height)) {
+  dec->prev_frame_timestamp = timestamp;
+  WebPDemuxReleaseIterator(&dec->prev_iter);
+  dec->prev_iter = iter;
+  dec->prev_frame_was_keyframe = is_key_frame;
+  if (!CopyCanvas(dec->curr_frame, dec->prev_frame_disposed, width, height)) {
    goto Error;
  }
-  if (dec->prev_iter_.dispose_method == WEBP_MUX_DISPOSE_BACKGROUND) {
-    ZeroFillFrameRect(dec->prev_frame_disposed_, width * NUM_CHANNELS,
-                      dec->prev_iter_.x_offset, dec->prev_iter_.y_offset,
-                      dec->prev_iter_.width, dec->prev_iter_.height);
+  if (dec->prev_iter.dispose_method == WEBP_MUX_DISPOSE_BACKGROUND) {
+    ZeroFillFrameRect(dec->prev_frame_disposed, width * NUM_CHANNELS,
+                      dec->prev_iter.x_offset, dec->prev_iter.y_offset,
+                      dec->prev_iter.width, dec->prev_iter.height);
  }
-  ++dec->next_frame_;
+  ++dec->next_frame;

  // All OK, fill in the values.
-  *buf_ptr = dec->curr_frame_;
+  *buf_ptr = dec->curr_frame;
  *timestamp_ptr = timestamp;
  return 1;

- Error:
+Error:
  WebPDemuxReleaseIterator(&iter);
  return 0;
 }

 int WebPAnimDecoderHasMoreFrames(const WebPAnimDecoder* dec) {
  if (dec == NULL) return 0;
-  return (dec->next_frame_ <= (int)dec->info_.frame_count);
+  return (dec->next_frame <= (int)dec->info.frame_count);
 }

 void WebPAnimDecoderReset(WebPAnimDecoder* dec) {
  if (dec != NULL) {
-    dec->prev_frame_timestamp_ = 0;
-    WebPDemuxReleaseIterator(&dec->prev_iter_);
-    memset(&dec->prev_iter_, 0, sizeof(dec->prev_iter_));
-    dec->prev_frame_was_keyframe_ = 0;
-    dec->next_frame_ = 1;
+    dec->prev_frame_timestamp = 0;
+    WebPDemuxReleaseIterator(&dec->prev_iter);
+    WEBP_UNSAFE_MEMSET(&dec->prev_iter, 0, sizeof(dec->prev_iter));
+    dec->prev_frame_was_keyframe = 0;
+    dec->next_frame = 1;
  }
 }

 const WebPDemuxer* WebPAnimDecoderGetDemuxer(const WebPAnimDecoder* dec) {
  if (dec == NULL) return NULL;
-  return dec->demux_;
+  return dec->demux;
 }

 void WebPAnimDecoderDelete(WebPAnimDecoder* dec) {
  if (dec != NULL) {
-    WebPDemuxReleaseIterator(&dec->prev_iter_);
-    WebPDemuxDelete(dec->demux_);
-    WebPSafeFree(dec->curr_frame_);
-    WebPSafeFree(dec->prev_frame_disposed_);
+    WebPDemuxReleaseIterator(&dec->prev_iter);
+    WebPDemuxDelete(dec->demux);
+    WebPSafeFree(dec->curr_frame);
+    WebPSafeFree(dec->prev_frame_disposed);
    WebPSafeFree(dec);
  }
 }
--- a/src/demux/demux.c
+++ b/src/demux/demux.c
@@ -19,65 +19,66 @@
 #include <string.h>

 #include "src/utils/utils.h"
-#include "src/webp/decode.h"     // WebPGetFeatures
+#include "src/webp/decode.h"  // WebPGetFeatures
 #include "src/webp/demux.h"
 #include "src/webp/format_constants.h"
+#include "src/webp/mux.h"
+#include "src/webp/mux_types.h"
+#include "src/webp/types.h"
+
+WEBP_ASSUME_UNSAFE_INDEXABLE_ABI

 #define DMUX_MAJ_VERSION 1
-#define DMUX_MIN_VERSION 4
+#define DMUX_MIN_VERSION 6
 #define DMUX_REV_VERSION 0

 typedef struct {
-  size_t start_;        // start location of the data
-  size_t end_;          // end location
-  size_t riff_end_;     // riff chunk end location, can be > end_.
-  size_t buf_size_;     // size of the buffer
-  const uint8_t* buf_;
+  size_t start;     // start location of the data
+  size_t end;       // end location
+  size_t riff_end;  // riff chunk end location, can be > end.
+  size_t buf_size;  // size of the buffer
+  const uint8_t* buf;
 } MemBuffer;

 typedef struct {
-  size_t offset_;
-  size_t size_;
+  size_t offset;
+  size_t size;
 } ChunkData;

 typedef struct Frame {
-  int x_offset_, y_offset_;
-  int width_, height_;
-  int has_alpha_;
-  int duration_;
-  WebPMuxAnimDispose dispose_method_;
-  WebPMuxAnimBlend blend_method_;
-  int frame_num_;
-  int complete_;   // img_components_ contains a full image.
-  ChunkData img_components_[2];  // 0=VP8{,L} 1=ALPH
-  struct Frame* next_;
+  int x_offset, y_offset;
+  int width, height;
+  int has_alpha;
+  int duration;
+  WebPMuxAnimDispose dispose_method;
+  WebPMuxAnimBlend blend_method;
+  int frame_num;
+  int complete;                 // img_components contains a full image.
+  ChunkData img_components[2];  // 0=VP8{,L} 1=ALPH
+  struct Frame* next;
 } Frame;

 typedef struct Chunk {
-  ChunkData data_;
-  struct Chunk* next_;
+  ChunkData data;
+  struct Chunk* next;
 } Chunk;

 struct WebPDemuxer {
-  MemBuffer mem_;
-  WebPDemuxState state_;
-  int is_ext_format_;
-  uint32_t feature_flags_;
-  int canvas_width_, canvas_height_;
-  int loop_count_;
-  uint32_t bgcolor_;
-  int num_frames_;
-  Frame* frames_;
-  Frame** frames_tail_;
-  Chunk* chunks_;  // non-image chunks
-  Chunk** chunks_tail_;
+  MemBuffer mem;
+  WebPDemuxState state;
+  int is_ext_format;
+  uint32_t feature_flags;
+  int canvas_width, canvas_height;
+  int loop_count;
+  uint32_t bgcolor;
+  int num_frames;
+  Frame* frames;
+  Frame** frames_tail;
+  Chunk* chunks;  // non-image chunks
+  Chunk** chunks_tail;
 };

-typedef enum {
-  PARSE_OK,
-  PARSE_NEED_MORE_DATA,
-  PARSE_ERROR
-} ParseStatus;
+typedef enum { PARSE_OK, PARSE_NEED_MORE_DATA, PARSE_ERROR } ParseStatus;

 typedef struct ChunkParser {
  uint8_t id[4];
@@ -91,10 +92,10 @@ static int IsValidSimpleFormat(const WebPDemuxer* const dmux);
 static int IsValidExtendedFormat(const WebPDemuxer* const dmux);

 static const ChunkParser kMasterChunks[] = {
-  { { 'V', 'P', '8', ' ' }, ParseSingleImage, IsValidSimpleFormat },
-  { { 'V', 'P', '8', 'L' }, ParseSingleImage, IsValidSimpleFormat },
-  { { 'V', 'P', '8', 'X' }, ParseVP8X,        IsValidExtendedFormat },
-  { { '0', '0', '0', '0' }, NULL,             NULL },
+    {{'V', 'P', '8', ' '}, ParseSingleImage, IsValidSimpleFormat},
+    {{'V', 'P', '8', 'L'}, ParseSingleImage, IsValidSimpleFormat},
+    {{'V', 'P', '8', 'X'}, ParseVP8X, IsValidExtendedFormat},
+    {{'0', '0', '0', '0'}, NULL, NULL},
 };

 //------------------------------------------------------------------------------
@@ -106,66 +107,66 @@ int WebPGetDemuxVersion(void) {
 // -----------------------------------------------------------------------------
 // MemBuffer

-static int RemapMemBuffer(MemBuffer* const mem,
-                          const uint8_t* data, size_t size) {
-  if (size < mem->buf_size_) return 0;  // can't remap to a shorter buffer!
+static int RemapMemBuffer(MemBuffer* const mem, const uint8_t* data,
+                          size_t size) {
+  if (size < mem->buf_size) return 0;  // can't remap to a shorter buffer!

-  mem->buf_ = data;
-  mem->end_ = mem->buf_size_ = size;
+  mem->buf = data;
+  mem->end = mem->buf_size = size;
  return 1;
 }

-static int InitMemBuffer(MemBuffer* const mem,
-                         const uint8_t* data, size_t size) {
-  memset(mem, 0, sizeof(*mem));
+static int InitMemBuffer(MemBuffer* const mem, const uint8_t* data,
+                         size_t size) {
+  WEBP_UNSAFE_MEMSET(mem, 0, sizeof(*mem));
  return RemapMemBuffer(mem, data, size);
 }

 // Return the remaining data size available in 'mem'.
 static WEBP_INLINE size_t MemDataSize(const MemBuffer* const mem) {
-  return (mem->end_ - mem->start_);
+  return (mem->end - mem->start);
 }

 // Return true if 'size' exceeds the end of the RIFF chunk.
 static WEBP_INLINE int SizeIsInvalid(const MemBuffer* const mem, size_t size) {
-  return (size > mem->riff_end_ - mem->start_);
+  return (size > mem->riff_end - mem->start);
 }

 static WEBP_INLINE void Skip(MemBuffer* const mem, size_t size) {
-  mem->start_ += size;
+  mem->start += size;
 }

 static WEBP_INLINE void Rewind(MemBuffer* const mem, size_t size) {
-  mem->start_ -= size;
+  mem->start -= size;
 }

 static WEBP_INLINE const uint8_t* GetBuffer(MemBuffer* const mem) {
-  return mem->buf_ + mem->start_;
+  return mem->buf + mem->start;
 }

 // Read from 'mem' and skip the read bytes.
 static WEBP_INLINE uint8_t ReadByte(MemBuffer* const mem) {
-  const uint8_t byte = mem->buf_[mem->start_];
+  const uint8_t byte = mem->buf[mem->start];
  Skip(mem, 1);
  return byte;
 }

 static WEBP_INLINE int ReadLE16s(MemBuffer* const mem) {
-  const uint8_t* const data = mem->buf_ + mem->start_;
+  const uint8_t* const data = mem->buf + mem->start;
  const int val = GetLE16(data);
  Skip(mem, 2);
  return val;
 }

 static WEBP_INLINE int ReadLE24s(MemBuffer* const mem) {
-  const uint8_t* const data = mem->buf_ + mem->start_;
+  const uint8_t* const data = mem->buf + mem->start;
  const int val = GetLE24(data);
  Skip(mem, 3);
  return val;
 }

 static WEBP_INLINE uint32_t ReadLE32(MemBuffer* const mem) {
-  const uint8_t* const data = mem->buf_ + mem->start_;
+  const uint8_t* const data = mem->buf + mem->start;
  const uint32_t val = GetLE32(data);
  Skip(mem, 4);
  return val;
@@ -175,34 +176,34 @@ static WEBP_INLINE uint32_t ReadLE32(MemBuffer* const mem) {
 // Secondary chunk parsing

 static void AddChunk(WebPDemuxer* const dmux, Chunk* const chunk) {
-  *dmux->chunks_tail_ = chunk;
-  chunk->next_ = NULL;
-  dmux->chunks_tail_ = &chunk->next_;
+  *dmux->chunks_tail = chunk;
+  chunk->next = NULL;
+  dmux->chunks_tail = &chunk->next;
 }

 // Add a frame to the end of the list, ensuring the last frame is complete.
 // Returns true on success, false otherwise.
 static int AddFrame(WebPDemuxer* const dmux, Frame* const frame) {
-  const Frame* const last_frame = *dmux->frames_tail_;
-  if (last_frame != NULL && !last_frame->complete_) return 0;
+  const Frame* const last_frame = *dmux->frames_tail;
+  if (last_frame != NULL && !last_frame->complete) return 0;

-  *dmux->frames_tail_ = frame;
-  frame->next_ = NULL;
-  dmux->frames_tail_ = &frame->next_;
+  *dmux->frames_tail = frame;
+  frame->next = NULL;
+  dmux->frames_tail = &frame->next;
  return 1;
 }

-static void SetFrameInfo(size_t start_offset, size_t size,
-                         int frame_num, int complete,
+static void SetFrameInfo(size_t start_offset, size_t size, int frame_num,
+                         int complete,
                         const WebPBitstreamFeatures* const features,
                         Frame* const frame) {
-  frame->img_components_[0].offset_ = start_offset;
-  frame->img_components_[0].size_ = size;
-  frame->width_ = features->width;
-  frame->height_ = features->height;
-  frame->has_alpha_ |= features->has_alpha;
-  frame->frame_num_ = frame_num;
-  frame->complete_ = complete;
+  frame->img_components[0].offset = start_offset;
+  frame->img_components[0].size = size;
+  frame->width = features->width;
+  frame->height = features->height;
+  frame->has_alpha |= features->has_alpha;
+  frame->frame_num = frame_num;
+  frame->complete = complete;
 }

 // Store image bearing chunks to 'frame'. 'min_size' is an optional size
@@ -211,14 +212,14 @@ static ParseStatus StoreFrame(int frame_num, uint32_t min_size,
                              MemBuffer* const mem, Frame* const frame) {
  int alpha_chunks = 0;
  int image_chunks = 0;
-  int done = (MemDataSize(mem) < CHUNK_HEADER_SIZE ||
-              MemDataSize(mem) < min_size);
+  int done =
+      (MemDataSize(mem) < CHUNK_HEADER_SIZE || MemDataSize(mem) < min_size);
  ParseStatus status = PARSE_OK;

  if (done) return PARSE_NEED_MORE_DATA;

  do {
-    const size_t chunk_start_offset = mem->start_;
+    const size_t chunk_start_offset = mem->start;
    const uint32_t fourcc = ReadLE32(mem);
    const uint32_t payload_size = ReadLE32(mem);
    uint32_t payload_size_padded;
@@ -229,7 +230,8 @@ static ParseStatus StoreFrame(int frame_num, uint32_t min_size,

    payload_size_padded = payload_size + (payload_size & 1);
    payload_available = (payload_size_padded > MemDataSize(mem))
-                      ? MemDataSize(mem) : payload_size_padded;
+                            ? MemDataSize(mem)
+                            : payload_size_padded;
    chunk_size = CHUNK_HEADER_SIZE + payload_available;
    if (SizeIsInvalid(mem, payload_size_padded)) return PARSE_ERROR;
    if (payload_size_padded > MemDataSize(mem)) status = PARSE_NEED_MORE_DATA;
@@ -238,10 +240,10 @@ static ParseStatus StoreFrame(int frame_num, uint32_t min_size,
      case MKFOURCC('A', 'L', 'P', 'H'):
        if (alpha_chunks == 0) {
          ++alpha_chunks;
-          frame->img_components_[1].offset_ = chunk_start_offset;
-          frame->img_components_[1].size_ = chunk_size;
-          frame->has_alpha_ = 1;
-          frame->frame_num_ = frame_num;
+          frame->img_components[1].offset = chunk_start_offset;
+          frame->img_components[1].size = chunk_size;
+          frame->has_alpha = 1;
+          frame->frame_num = frame_num;
          Skip(mem, payload_available);
        } else {
          goto Done;
@@ -255,9 +257,8 @@ static ParseStatus StoreFrame(int frame_num, uint32_t min_size,
          // Extract the bitstream features, tolerating failures when the data
          // is incomplete.
          WebPBitstreamFeatures features;
-          const VP8StatusCode vp8_status =
-              WebPGetFeatures(mem->buf_ + chunk_start_offset, chunk_size,
-                              &features);
+          const VP8StatusCode vp8_status = WebPGetFeatures(
+              mem->buf + chunk_start_offset, chunk_size, &features);
          if (status == PARSE_NEED_MORE_DATA &&
              vp8_status == VP8_STATUS_NOT_ENOUGH_DATA) {
            return PARSE_NEED_MORE_DATA;
@@ -273,7 +274,7 @@ static ParseStatus StoreFrame(int frame_num, uint32_t min_size,
          goto Done;
        }
        break;
- Done:
+      Done:
      default:
        // Restore fourcc/size when moving up one level in parsing.
        Rewind(mem, CHUNK_HEADER_SIZE);
@@ -281,7 +282,7 @@ static ParseStatus StoreFrame(int frame_num, uint32_t min_size,
        break;
    }

-    if (mem->start_ == mem->riff_end_) {
+    if (mem->start == mem->riff_end) {
      done = 1;
    } else if (MemDataSize(mem) < CHUNK_HEADER_SIZE) {
      status = PARSE_NEED_MORE_DATA;
@@ -295,12 +296,11 @@ static ParseStatus StoreFrame(int frame_num, uint32_t min_size,
 // enough data ('min_size') to parse the payload.
 // Returns PARSE_OK on success with *frame pointing to the new Frame.
 // Returns PARSE_NEED_MORE_DATA with insufficient data, PARSE_ERROR otherwise.
-static ParseStatus NewFrame(const MemBuffer* const mem,
-                            uint32_t min_size, uint32_t actual_size,
-                            Frame** frame) {
+static ParseStatus NewFrame(const MemBuffer* const mem, uint32_t min_size,
+                            uint32_t actual_size, Frame** frame) {
  if (SizeIsInvalid(mem, min_size)) return PARSE_ERROR;
  if (actual_size < min_size) return PARSE_ERROR;
-  if (MemDataSize(mem) < min_size)  return PARSE_NEED_MORE_DATA;
+  if (MemDataSize(mem) < min_size) return PARSE_NEED_MORE_DATA;

  *frame = (Frame*)WebPSafeCalloc(1ULL, sizeof(**frame));
  return (*frame == NULL) ? PARSE_ERROR : PARSE_OK;
@@ -308,44 +308,43 @@ static ParseStatus NewFrame(const MemBuffer* const mem,

 // Parse a 'ANMF' chunk and any image bearing chunks that immediately follow.
 // 'frame_chunk_size' is the previously validated, padded chunk size.
-static ParseStatus ParseAnimationFrame(
-    WebPDemuxer* const dmux, uint32_t frame_chunk_size) {
-  const int is_animation = !!(dmux->feature_flags_ & ANIMATION_FLAG);
+static ParseStatus ParseAnimationFrame(WebPDemuxer* const dmux,
+                                       uint32_t frame_chunk_size) {
+  const int is_animation = !!(dmux->feature_flags & ANIMATION_FLAG);
  const uint32_t anmf_payload_size = frame_chunk_size - ANMF_CHUNK_SIZE;
  int added_frame = 0;
  int bits;
-  MemBuffer* const mem = &dmux->mem_;
+  MemBuffer* const mem = &dmux->mem;
  Frame* frame;
  size_t start_offset;
-  ParseStatus status =
-      NewFrame(mem, ANMF_CHUNK_SIZE, frame_chunk_size, &frame);
+  ParseStatus status = NewFrame(mem, ANMF_CHUNK_SIZE, frame_chunk_size, &frame);
  if (status != PARSE_OK) return status;

-  frame->x_offset_       = 2 * ReadLE24s(mem);
-  frame->y_offset_       = 2 * ReadLE24s(mem);
-  frame->width_          = 1 + ReadLE24s(mem);
-  frame->height_         = 1 + ReadLE24s(mem);
-  frame->duration_       = ReadLE24s(mem);
+  frame->x_offset = 2 * ReadLE24s(mem);
+  frame->y_offset = 2 * ReadLE24s(mem);
+  frame->width = 1 + ReadLE24s(mem);
+  frame->height = 1 + ReadLE24s(mem);
+  frame->duration = ReadLE24s(mem);
  bits = ReadByte(mem);
-  frame->dispose_method_ =
+  frame->dispose_method =
      (bits & 1) ? WEBP_MUX_DISPOSE_BACKGROUND : WEBP_MUX_DISPOSE_NONE;
-  frame->blend_method_ = (bits & 2) ? WEBP_MUX_NO_BLEND : WEBP_MUX_BLEND;
-  if (frame->width_ * (uint64_t)frame->height_ >= MAX_IMAGE_AREA) {
+  frame->blend_method = (bits & 2) ? WEBP_MUX_NO_BLEND : WEBP_MUX_BLEND;
+  if (frame->width * (uint64_t)frame->height >= MAX_IMAGE_AREA) {
    WebPSafeFree(frame);
    return PARSE_ERROR;
  }

  // Store a frame only if the animation flag is set there is some data for
  // this frame is available.
-  start_offset = mem->start_;
-  status = StoreFrame(dmux->num_frames_ + 1, anmf_payload_size, mem, frame);
-  if (status != PARSE_ERROR && mem->start_ - start_offset > anmf_payload_size) {
+  start_offset = mem->start;
+  status = StoreFrame(dmux->num_frames + 1, anmf_payload_size, mem, frame);
+  if (status != PARSE_ERROR && mem->start - start_offset > anmf_payload_size) {
    status = PARSE_ERROR;
  }
-  if (status != PARSE_ERROR && is_animation && frame->frame_num_ > 0) {
+  if (status != PARSE_ERROR && is_animation && frame->frame_num > 0) {
    added_frame = AddFrame(dmux, frame);
    if (added_frame) {
-      ++dmux->num_frames_;
+      ++dmux->num_frames;
    } else {
      status = PARSE_ERROR;
    }
@@ -359,13 +358,13 @@ static ParseStatus ParseAnimationFrame(
 // the user to request the payload via a fourcc string. 'size' includes the
 // header and the unpadded payload size.
 // Returns true on success, false otherwise.
-static int StoreChunk(WebPDemuxer* const dmux,
-                      size_t start_offset, uint32_t size) {
+static int StoreChunk(WebPDemuxer* const dmux, size_t start_offset,
+                      uint32_t size) {
  Chunk* const chunk = (Chunk*)WebPSafeCalloc(1ULL, sizeof(*chunk));
  if (chunk == NULL) return 0;

-  chunk->data_.offset_ = start_offset;
-  chunk->data_.size_ = size;
+  chunk->data.offset = start_offset;
+  chunk->data.size = size;
  AddChunk(dmux, chunk);
  return 1;
 }
@@ -389,9 +388,9 @@ static ParseStatus ReadHeader(MemBuffer* const mem) {
  if (riff_size > MAX_CHUNK_PAYLOAD) return PARSE_ERROR;

  // There's no point in reading past the end of the RIFF chunk
-  mem->riff_end_ = riff_size + CHUNK_HEADER_SIZE;
-  if (mem->buf_size_ > mem->riff_end_) {
-    mem->buf_size_ = mem->end_ = mem->riff_end_;
+  mem->riff_end = riff_size + CHUNK_HEADER_SIZE;
+  if (mem->buf_size > mem->riff_end) {
+    mem->buf_size = mem->end = mem->riff_end;
  }

  Skip(mem, RIFF_HEADER_SIZE);
@@ -400,12 +399,12 @@ static ParseStatus ReadHeader(MemBuffer* const mem) {

 static ParseStatus ParseSingleImage(WebPDemuxer* const dmux) {
  const size_t min_size = CHUNK_HEADER_SIZE;
-  MemBuffer* const mem = &dmux->mem_;
+  MemBuffer* const mem = &dmux->mem;
  Frame* frame;
  ParseStatus status;
  int image_added = 0;

-  if (dmux->frames_ != NULL) return PARSE_ERROR;
+  if (dmux->frames != NULL) return PARSE_ERROR;
  if (SizeIsInvalid(mem, min_size)) return PARSE_ERROR;
  if (MemDataSize(mem) < min_size) return PARSE_NEED_MORE_DATA;

@@ -414,29 +413,29 @@ static ParseStatus ParseSingleImage(WebPDemuxer* const dmux) {

  // For the single image case we allow parsing of a partial frame, so no
  // minimum size is imposed here.
-  status = StoreFrame(1, 0, &dmux->mem_, frame);
+  status = StoreFrame(1, 0, &dmux->mem, frame);
  if (status != PARSE_ERROR) {
-    const int has_alpha = !!(dmux->feature_flags_ & ALPHA_FLAG);
+    const int has_alpha = !!(dmux->feature_flags & ALPHA_FLAG);
    // Clear any alpha when the alpha flag is missing.
-    if (!has_alpha && frame->img_components_[1].size_ > 0) {
-      frame->img_components_[1].offset_ = 0;
-      frame->img_components_[1].size_ = 0;
-      frame->has_alpha_ = 0;
+    if (!has_alpha && frame->img_components[1].size > 0) {
+      frame->img_components[1].offset = 0;
+      frame->img_components[1].size = 0;
+      frame->has_alpha = 0;
    }

    // Use the frame width/height as the canvas values for non-vp8x files.
    // Also, set ALPHA_FLAG if this is a lossless image with alpha.
-    if (!dmux->is_ext_format_ && frame->width_ > 0 && frame->height_ > 0) {
-      dmux->state_ = WEBP_DEMUX_PARSED_HEADER;
-      dmux->canvas_width_ = frame->width_;
-      dmux->canvas_height_ = frame->height_;
-      dmux->feature_flags_ |= frame->has_alpha_ ? ALPHA_FLAG : 0;
+    if (!dmux->is_ext_format && frame->width > 0 && frame->height > 0) {
+      dmux->state = WEBP_DEMUX_PARSED_HEADER;
+      dmux->canvas_width = frame->width;
+      dmux->canvas_height = frame->height;
+      dmux->feature_flags |= frame->has_alpha ? ALPHA_FLAG : 0;
    }
    if (!AddFrame(dmux, frame)) {
      status = PARSE_ERROR;  // last frame was left incomplete
    } else {
      image_added = 1;
-      dmux->num_frames_ = 1;
+      dmux->num_frames = 1;
    }
  }

@@ -445,14 +444,14 @@ static ParseStatus ParseSingleImage(WebPDemuxer* const dmux) {
 }

 static ParseStatus ParseVP8XChunks(WebPDemuxer* const dmux) {
-  const int is_animation = !!(dmux->feature_flags_ & ANIMATION_FLAG);
-  MemBuffer* const mem = &dmux->mem_;
+  const int is_animation = !!(dmux->feature_flags & ANIMATION_FLAG);
+  MemBuffer* const mem = &dmux->mem;
  int anim_chunks = 0;
  ParseStatus status = PARSE_OK;

  do {
    int store_chunk = 1;
-    const size_t chunk_start_offset = mem->start_;
+    const size_t chunk_start_offset = mem->start;
    const uint32_t fourcc = ReadLE32(mem);
    const uint32_t chunk_size = ReadLE32(mem);
    uint32_t chunk_size_padded;
@@ -483,8 +482,8 @@ static ParseStatus ParseVP8XChunks(WebPDemuxer* const dmux) {
          status = PARSE_NEED_MORE_DATA;
        } else if (anim_chunks == 0) {
          ++anim_chunks;
-          dmux->bgcolor_ = ReadLE32(mem);
-          dmux->loop_count_ = ReadLE16s(mem);
+          dmux->bgcolor = ReadLE32(mem);
+          dmux->loop_count = ReadLE16s(mem);
          Skip(mem, chunk_size_padded - ANIM_CHUNK_SIZE);
        } else {
          store_chunk = 0;
@@ -498,18 +497,18 @@ static ParseStatus ParseVP8XChunks(WebPDemuxer* const dmux) {
        break;
      }
      case MKFOURCC('I', 'C', 'C', 'P'): {
-        store_chunk = !!(dmux->feature_flags_ & ICCP_FLAG);
+        store_chunk = !!(dmux->feature_flags & ICCP_FLAG);
        goto Skip;
      }
      case MKFOURCC('E', 'X', 'I', 'F'): {
-        store_chunk = !!(dmux->feature_flags_ & EXIF_FLAG);
+        store_chunk = !!(dmux->feature_flags & EXIF_FLAG);
        goto Skip;
      }
      case MKFOURCC('X', 'M', 'P', ' '): {
-        store_chunk = !!(dmux->feature_flags_ & XMP_FLAG);
+        store_chunk = !!(dmux->feature_flags & XMP_FLAG);
        goto Skip;
      }
- Skip:
+      Skip:
      default: {
        if (chunk_size_padded <= MemDataSize(mem)) {
          if (store_chunk) {
@@ -527,7 +526,7 @@ static ParseStatus ParseVP8XChunks(WebPDemuxer* const dmux) {
      }
    }

-    if (mem->start_ == mem->riff_end_) {
+    if (mem->start == mem->riff_end) {
      break;
    } else if (MemDataSize(mem) < CHUNK_HEADER_SIZE) {
      status = PARSE_NEED_MORE_DATA;
@@ -538,12 +537,12 @@ static ParseStatus ParseVP8XChunks(WebPDemuxer* const dmux) {
 }

 static ParseStatus ParseVP8X(WebPDemuxer* const dmux) {
-  MemBuffer* const mem = &dmux->mem_;
+  MemBuffer* const mem = &dmux->mem;
  uint32_t vp8x_size;

  if (MemDataSize(mem) < CHUNK_HEADER_SIZE) return PARSE_NEED_MORE_DATA;

-  dmux->is_ext_format_ = 1;
+  dmux->is_ext_format = 1;
  Skip(mem, TAG_SIZE);  // VP8X
  vp8x_size = ReadLE32(mem);
  if (vp8x_size > MAX_CHUNK_PAYLOAD) return PARSE_ERROR;
@@ -552,15 +551,15 @@ static ParseStatus ParseVP8X(WebPDemuxer* const dmux) {
  if (SizeIsInvalid(mem, vp8x_size)) return PARSE_ERROR;
  if (MemDataSize(mem) < vp8x_size) return PARSE_NEED_MORE_DATA;

-  dmux->feature_flags_ = ReadByte(mem);
+  dmux->feature_flags = ReadByte(mem);
  Skip(mem, 3);  // Reserved.
-  dmux->canvas_width_  = 1 + ReadLE24s(mem);
-  dmux->canvas_height_ = 1 + ReadLE24s(mem);
-  if (dmux->canvas_width_ * (uint64_t)dmux->canvas_height_ >= MAX_IMAGE_AREA) {
+  dmux->canvas_width = 1 + ReadLE24s(mem);
+  dmux->canvas_height = 1 + ReadLE24s(mem);
+  if (dmux->canvas_width * (uint64_t)dmux->canvas_height >= MAX_IMAGE_AREA) {
    return PARSE_ERROR;  // image final dimension is too large
  }
  Skip(mem, vp8x_size - VP8X_CHUNK_SIZE);  // skip any trailing data.
-  dmux->state_ = WEBP_DEMUX_PARSED_HEADER;
+  dmux->state = WEBP_DEMUX_PARSED_HEADER;

  if (SizeIsInvalid(mem, CHUNK_HEADER_SIZE)) return PARSE_ERROR;
  if (MemDataSize(mem) < CHUNK_HEADER_SIZE) return PARSE_NEED_MORE_DATA;
@@ -572,13 +571,13 @@ static ParseStatus ParseVP8X(WebPDemuxer* const dmux) {
 // Format validation

 static int IsValidSimpleFormat(const WebPDemuxer* const dmux) {
-  const Frame* const frame = dmux->frames_;
-  if (dmux->state_ == WEBP_DEMUX_PARSING_HEADER) return 1;
+  const Frame* const frame = dmux->frames;
+  if (dmux->state == WEBP_DEMUX_PARSING_HEADER) return 1;

-  if (dmux->canvas_width_ <= 0 || dmux->canvas_height_ <= 0) return 0;
-  if (dmux->state_ == WEBP_DEMUX_DONE && frame == NULL) return 0;
+  if (dmux->canvas_width <= 0 || dmux->canvas_height <= 0) return 0;
+  if (dmux->state == WEBP_DEMUX_DONE && frame == NULL) return 0;

-  if (frame->width_ <= 0 || frame->height_ <= 0) return 0;
+  if (frame->width <= 0 || frame->height <= 0) return 0;
  return 1;
 }

@@ -587,65 +586,65 @@ static int IsValidSimpleFormat(const WebPDemuxer* const dmux) {
 static int CheckFrameBounds(const Frame* const frame, int exact,
                            int canvas_width, int canvas_height) {
  if (exact) {
-    if (frame->x_offset_ != 0 || frame->y_offset_ != 0) {
+    if (frame->x_offset != 0 || frame->y_offset != 0) {
      return 0;
    }
-    if (frame->width_ != canvas_width || frame->height_ != canvas_height) {
+    if (frame->width != canvas_width || frame->height != canvas_height) {
      return 0;
    }
  } else {
-    if (frame->x_offset_ < 0 || frame->y_offset_ < 0) return 0;
-    if (frame->width_ + frame->x_offset_ > canvas_width) return 0;
-    if (frame->height_ + frame->y_offset_ > canvas_height) return 0;
+    if (frame->x_offset < 0 || frame->y_offset < 0) return 0;
+    if (frame->width + frame->x_offset > canvas_width) return 0;
+    if (frame->height + frame->y_offset > canvas_height) return 0;
  }
  return 1;
 }

 static int IsValidExtendedFormat(const WebPDemuxer* const dmux) {
-  const int is_animation = !!(dmux->feature_flags_ & ANIMATION_FLAG);
-  const Frame* f = dmux->frames_;
+  const int is_animation = !!(dmux->feature_flags & ANIMATION_FLAG);
+  const Frame* f = dmux->frames;

-  if (dmux->state_ == WEBP_DEMUX_PARSING_HEADER) return 1;
+  if (dmux->state == WEBP_DEMUX_PARSING_HEADER) return 1;

-  if (dmux->canvas_width_ <= 0 || dmux->canvas_height_ <= 0) return 0;
-  if (dmux->loop_count_ < 0) return 0;
-  if (dmux->state_ == WEBP_DEMUX_DONE && dmux->frames_ == NULL) return 0;
-  if (dmux->feature_flags_ & ~ALL_VALID_FLAGS) return 0;  // invalid bitstream
+  if (dmux->canvas_width <= 0 || dmux->canvas_height <= 0) return 0;
+  if (dmux->loop_count < 0) return 0;
+  if (dmux->state == WEBP_DEMUX_DONE && dmux->frames == NULL) return 0;
+  if (dmux->feature_flags & ~ALL_VALID_FLAGS) return 0;  // invalid bitstream

  while (f != NULL) {
-    const int cur_frame_set = f->frame_num_;
+    const int cur_frame_set = f->frame_num;

    // Check frame properties.
-    for (; f != NULL && f->frame_num_ == cur_frame_set; f = f->next_) {
-      const ChunkData* const image = f->img_components_;
-      const ChunkData* const alpha = f->img_components_ + 1;
+    for (; f != NULL && f->frame_num == cur_frame_set; f = f->next) {
+      const ChunkData* const image = f->img_components;
+      const ChunkData* const alpha = f->img_components + 1;

-      if (!is_animation && f->frame_num_ > 1) return 0;
+      if (!is_animation && f->frame_num > 1) return 0;

-      if (f->complete_) {
-        if (alpha->size_ == 0 && image->size_ == 0) return 0;
+      if (f->complete) {
+        if (alpha->size == 0 && image->size == 0) return 0;
        // Ensure alpha precedes image bitstream.
-        if (alpha->size_ > 0 && alpha->offset_ > image->offset_) {
+        if (alpha->size > 0 && alpha->offset > image->offset) {
          return 0;
        }

-        if (f->width_ <= 0 || f->height_ <= 0) return 0;
+        if (f->width <= 0 || f->height <= 0) return 0;
      } else {
        // There shouldn't be a partial frame in a complete file.
-        if (dmux->state_ == WEBP_DEMUX_DONE) return 0;
+        if (dmux->state == WEBP_DEMUX_DONE) return 0;

        // Ensure alpha precedes image bitstream.
-        if (alpha->size_ > 0 && image->size_ > 0 &&
-            alpha->offset_ > image->offset_) {
+        if (alpha->size > 0 && image->size > 0 &&
+            alpha->offset > image->offset) {
          return 0;
        }
        // There shouldn't be any frames after an incomplete one.
-        if (f->next_ != NULL) return 0;
+        if (f->next != NULL) return 0;
      }

-      if (f->width_ > 0 && f->height_ > 0 &&
-          !CheckFrameBounds(f, !is_animation,
-                            dmux->canvas_width_, dmux->canvas_height_)) {
+      if (f->width > 0 && f->height > 0 &&
+          !CheckFrameBounds(f, !is_animation, dmux->canvas_width,
+                            dmux->canvas_height)) {
        return 0;
      }
    }
@@ -657,21 +656,21 @@ static int IsValidExtendedFormat(const WebPDemuxer* const dmux) {
 // WebPDemuxer object

 static void InitDemux(WebPDemuxer* const dmux, const MemBuffer* const mem) {
-  dmux->state_ = WEBP_DEMUX_PARSING_HEADER;
-  dmux->loop_count_ = 1;
-  dmux->bgcolor_ = 0xFFFFFFFF;  // White background by default.
-  dmux->canvas_width_ = -1;
-  dmux->canvas_height_ = -1;
-  dmux->frames_tail_ = &dmux->frames_;
-  dmux->chunks_tail_ = &dmux->chunks_;
-  dmux->mem_ = *mem;
+  dmux->state = WEBP_DEMUX_PARSING_HEADER;
+  dmux->loop_count = 1;
+  dmux->bgcolor = 0xFFFFFFFF;  // White background by default.
+  dmux->canvas_width = -1;
+  dmux->canvas_height = -1;
+  dmux->frames_tail = &dmux->frames;
+  dmux->chunks_tail = &dmux->chunks;
+  dmux->mem = *mem;
 }

 static ParseStatus CreateRawImageDemuxer(MemBuffer* const mem,
                                         WebPDemuxer** demuxer) {
  WebPBitstreamFeatures features;
  const VP8StatusCode status =
-      WebPGetFeatures(mem->buf_, mem->buf_size_, &features);
+      WebPGetFeatures(mem->buf, mem->buf_size, &features);
  *demuxer = NULL;
  if (status != VP8_STATUS_OK) {
    return (status == VP8_STATUS_NOT_ENOUGH_DATA) ? PARSE_NEED_MORE_DATA
@@ -683,19 +682,19 @@ static ParseStatus CreateRawImageDemuxer(MemBuffer* const mem,
    Frame* const frame = (Frame*)WebPSafeCalloc(1ULL, sizeof(*frame));
    if (dmux == NULL || frame == NULL) goto Error;
    InitDemux(dmux, mem);
-    SetFrameInfo(0, mem->buf_size_, 1 /*frame_num*/, 1 /*complete*/, &features,
+    SetFrameInfo(0, mem->buf_size, 1 /*frame_num*/, 1 /*complete*/, &features,
                 frame);
    if (!AddFrame(dmux, frame)) goto Error;
-    dmux->state_ = WEBP_DEMUX_DONE;
-    dmux->canvas_width_ = frame->width_;
-    dmux->canvas_height_ = frame->height_;
-    dmux->feature_flags_ |= frame->has_alpha_ ? ALPHA_FLAG : 0;
-    dmux->num_frames_ = 1;
+    dmux->state = WEBP_DEMUX_DONE;
+    dmux->canvas_width = frame->width;
+    dmux->canvas_height = frame->height;
+    dmux->feature_flags |= frame->has_alpha ? ALPHA_FLAG : 0;
+    dmux->num_frames = 1;
    assert(IsValidSimpleFormat(dmux));
    *demuxer = dmux;
    return PARSE_OK;

- Error:
+  Error:
    WebPSafeFree(dmux);
    WebPSafeFree(frame);
    return PARSE_ERROR;
@@ -734,7 +733,7 @@ WebPDemuxer* WebPDemuxInternal(const WebPData* data, int allow_partial,
    return NULL;
  }

-  partial = (mem.buf_size_ < mem.riff_end_);
+  partial = (mem.buf_size < mem.riff_end);
  if (!allow_partial && partial) return NULL;

  dmux = (WebPDemuxer*)WebPSafeCalloc(1ULL, sizeof(*dmux));
@@ -743,16 +742,16 @@ WebPDemuxer* WebPDemuxInternal(const WebPData* data, int allow_partial,

  status = PARSE_ERROR;
  for (parser = kMasterChunks; parser->parse != NULL; ++parser) {
-    if (!memcmp(parser->id, GetBuffer(&dmux->mem_), TAG_SIZE)) {
+    if (!memcmp(parser->id, GetBuffer(&dmux->mem), TAG_SIZE)) {
      status = parser->parse(dmux);
-      if (status == PARSE_OK) dmux->state_ = WEBP_DEMUX_DONE;
+      if (status == PARSE_OK) dmux->state = WEBP_DEMUX_DONE;
      if (status == PARSE_NEED_MORE_DATA && !partial) status = PARSE_ERROR;
      if (status != PARSE_ERROR && !parser->valid(dmux)) status = PARSE_ERROR;
-      if (status == PARSE_ERROR) dmux->state_ = WEBP_DEMUX_PARSE_ERROR;
+      if (status == PARSE_ERROR) dmux->state = WEBP_DEMUX_PARSE_ERROR;
      break;
    }
  }
-  if (state != NULL) *state = dmux->state_;
+  if (state != NULL) *state = dmux->state;

  if (status == PARSE_ERROR) {
    WebPDemuxDelete(dmux);
@@ -766,14 +765,14 @@ void WebPDemuxDelete(WebPDemuxer* dmux) {
  Frame* f;
  if (dmux == NULL) return;

-  for (f = dmux->frames_; f != NULL;) {
+  for (f = dmux->frames; f != NULL;) {
    Frame* const cur_frame = f;
-    f = f->next_;
+    f = f->next;
    WebPSafeFree(cur_frame);
  }
-  for (c = dmux->chunks_; c != NULL;) {
+  for (c = dmux->chunks; c != NULL;) {
    Chunk* const cur_chunk = c;
-    c = c->next_;
+    c = c->next;
    WebPSafeFree(cur_chunk);
  }
  WebPSafeFree(dmux);
@@ -785,12 +784,18 @@ uint32_t WebPDemuxGetI(const WebPDemuxer* dmux, WebPFormatFeature feature) {
  if (dmux == NULL) return 0;

  switch (feature) {
-    case WEBP_FF_FORMAT_FLAGS:     return dmux->feature_flags_;
-    case WEBP_FF_CANVAS_WIDTH:     return (uint32_t)dmux->canvas_width_;
-    case WEBP_FF_CANVAS_HEIGHT:    return (uint32_t)dmux->canvas_height_;
-    case WEBP_FF_LOOP_COUNT:       return (uint32_t)dmux->loop_count_;
-    case WEBP_FF_BACKGROUND_COLOR: return dmux->bgcolor_;
-    case WEBP_FF_FRAME_COUNT:      return (uint32_t)dmux->num_frames_;
+    case WEBP_FF_FORMAT_FLAGS:
+      return dmux->feature_flags;
+    case WEBP_FF_CANVAS_WIDTH:
+      return (uint32_t)dmux->canvas_width;
+    case WEBP_FF_CANVAS_HEIGHT:
+      return (uint32_t)dmux->canvas_height;
+    case WEBP_FF_LOOP_COUNT:
+      return (uint32_t)dmux->loop_count;
+    case WEBP_FF_BACKGROUND_COLOR:
+      return dmux->bgcolor;
+    case WEBP_FF_FRAME_COUNT:
+      return (uint32_t)dmux->num_frames;
  }
  return 0;
 }
@@ -800,8 +805,8 @@ uint32_t WebPDemuxGetI(const WebPDemuxer* dmux, WebPFormatFeature feature) {

 static const Frame* GetFrame(const WebPDemuxer* const dmux, int frame_num) {
  const Frame* f;
-  for (f = dmux->frames_; f != NULL; f = f->next_) {
-    if (frame_num == f->frame_num_) break;
+  for (f = dmux->frames; f != NULL; f = f->next) {
+    if (frame_num == f->frame_num) break;
  }
  return f;
 }
@@ -811,19 +816,19 @@ static const uint8_t* GetFramePayload(const uint8_t* const mem_buf,
                                      size_t* const data_size) {
  *data_size = 0;
  if (frame != NULL) {
-    const ChunkData* const image = frame->img_components_;
-    const ChunkData* const alpha = frame->img_components_ + 1;
-    size_t start_offset = image->offset_;
-    *data_size = image->size_;
+    const ChunkData* const image = frame->img_components;
+    const ChunkData* const alpha = frame->img_components + 1;
+    size_t start_offset = image->offset;
+    *data_size = image->size;

    // if alpha exists it precedes image, update the size allowing for
    // intervening chunks.
-    if (alpha->size_ > 0) {
-      const size_t inter_size = (image->offset_ > 0)
-                              ? image->offset_ - (alpha->offset_ + alpha->size_)
+    if (alpha->size > 0) {
+      const size_t inter_size =
+          (image->offset > 0) ? image->offset - (alpha->offset + alpha->size)
                              : 0;
-      start_offset = alpha->offset_;
-      *data_size  += alpha->size_ + inter_size;
+      start_offset = alpha->offset;
+      *data_size += alpha->size + inter_size;
    }
    return mem_buf + start_offset;
  }
@@ -832,27 +837,26 @@ static const uint8_t* GetFramePayload(const uint8_t* const mem_buf,

 // Create a whole 'frame' from VP8 (+ alpha) or lossless.
 static int SynthesizeFrame(const WebPDemuxer* const dmux,
-                           const Frame* const frame,
-                           WebPIterator* const iter) {
-  const uint8_t* const mem_buf = dmux->mem_.buf_;
+                           const Frame* const frame, WebPIterator* const iter) {
+  const uint8_t* const mem_buf = dmux->mem.buf;
  size_t payload_size = 0;
  const uint8_t* const payload = GetFramePayload(mem_buf, frame, &payload_size);
  if (payload == NULL) return 0;
  assert(frame != NULL);

-  iter->frame_num      = frame->frame_num_;
-  iter->num_frames     = dmux->num_frames_;
-  iter->x_offset       = frame->x_offset_;
-  iter->y_offset       = frame->y_offset_;
-  iter->width          = frame->width_;
-  iter->height         = frame->height_;
-  iter->has_alpha      = frame->has_alpha_;
-  iter->duration       = frame->duration_;
-  iter->dispose_method = frame->dispose_method_;
-  iter->blend_method   = frame->blend_method_;
-  iter->complete       = frame->complete_;
+  iter->frame_num = frame->frame_num;
+  iter->num_frames = dmux->num_frames;
+  iter->x_offset = frame->x_offset;
+  iter->y_offset = frame->y_offset;
+  iter->width = frame->width;
+  iter->height = frame->height;
+  iter->has_alpha = frame->has_alpha;
+  iter->duration = frame->duration;
+  iter->dispose_method = frame->dispose_method;
+  iter->blend_method = frame->blend_method;
+  iter->complete = frame->complete;
  iter->fragment.bytes = payload;
-  iter->fragment.size  = payload_size;
+  iter->fragment.size = payload_size;
  return 1;
 }

@@ -860,8 +864,8 @@ static int SetFrame(int frame_num, WebPIterator* const iter) {
  const Frame* frame;
  const WebPDemuxer* const dmux = (WebPDemuxer*)iter->private_;
  if (dmux == NULL || frame_num < 0) return 0;
-  if (frame_num > dmux->num_frames_) return 0;
-  if (frame_num == 0) frame_num = dmux->num_frames_;
+  if (frame_num > dmux->num_frames) return 0;
+  if (frame_num == 0) frame_num = dmux->num_frames;

  frame = GetFrame(dmux, frame_num);
  if (frame == NULL) return 0;
@@ -872,7 +876,7 @@ static int SetFrame(int frame_num, WebPIterator* const iter) {
 int WebPDemuxGetFrame(const WebPDemuxer* dmux, int frame, WebPIterator* iter) {
  if (iter == NULL) return 0;

-  memset(iter, 0, sizeof(*iter));
+  WEBP_UNSAFE_MEMSET(iter, 0, sizeof(*iter));
  iter->private_ = (void*)dmux;
  return SetFrame(frame, iter);
 }
@@ -888,19 +892,17 @@ int WebPDemuxPrevFrame(WebPIterator* iter) {
  return SetFrame(iter->frame_num - 1, iter);
 }

-void WebPDemuxReleaseIterator(WebPIterator* iter) {
-  (void)iter;
-}
+void WebPDemuxReleaseIterator(WebPIterator* iter) { (void)iter; }

 // -----------------------------------------------------------------------------
 // Chunk iteration

 static int ChunkCount(const WebPDemuxer* const dmux, const char fourcc[4]) {
-  const uint8_t* const mem_buf = dmux->mem_.buf_;
+  const uint8_t* const mem_buf = dmux->mem.buf;
  const Chunk* c;
  int count = 0;
-  for (c = dmux->chunks_; c != NULL; c = c->next_) {
-    const uint8_t* const header = mem_buf + c->data_.offset_;
+  for (c = dmux->chunks; c != NULL; c = c->next) {
+    const uint8_t* const header = mem_buf + c->data.offset;
    if (!memcmp(header, fourcc, TAG_SIZE)) ++count;
  }
  return count;
@@ -908,11 +910,11 @@ static int ChunkCount(const WebPDemuxer* const dmux, const char fourcc[4]) {

 static const Chunk* GetChunk(const WebPDemuxer* const dmux,
                             const char fourcc[4], int chunk_num) {
-  const uint8_t* const mem_buf = dmux->mem_.buf_;
+  const uint8_t* const mem_buf = dmux->mem.buf;
  const Chunk* c;
  int count = 0;
-  for (c = dmux->chunks_; c != NULL; c = c->next_) {
-    const uint8_t* const header = mem_buf + c->data_.offset_;
+  for (c = dmux->chunks; c != NULL; c = c->next) {
+    const uint8_t* const header = mem_buf + c->data.offset;
    if (!memcmp(header, fourcc, TAG_SIZE)) ++count;
    if (count == chunk_num) break;
  }
@@ -930,23 +932,22 @@ static int SetChunk(const char fourcc[4], int chunk_num,
  if (chunk_num == 0) chunk_num = count;

  if (chunk_num <= count) {
-    const uint8_t* const mem_buf = dmux->mem_.buf_;
+    const uint8_t* const mem_buf = dmux->mem.buf;
    const Chunk* const chunk = GetChunk(dmux, fourcc, chunk_num);
-    iter->chunk.bytes = mem_buf + chunk->data_.offset_ + CHUNK_HEADER_SIZE;
-    iter->chunk.size  = chunk->data_.size_ - CHUNK_HEADER_SIZE;
-    iter->num_chunks  = count;
-    iter->chunk_num   = chunk_num;
+    iter->chunk.bytes = mem_buf + chunk->data.offset + CHUNK_HEADER_SIZE;
+    iter->chunk.size = chunk->data.size - CHUNK_HEADER_SIZE;
+    iter->num_chunks = count;
+    iter->chunk_num = chunk_num;
    return 1;
  }
  return 0;
 }

-int WebPDemuxGetChunk(const WebPDemuxer* dmux,
-                      const char fourcc[4], int chunk_num,
-                      WebPChunkIterator* iter) {
+int WebPDemuxGetChunk(const WebPDemuxer* dmux, const char fourcc[4],
+                      int chunk_num, WebPChunkIterator* iter) {
  if (iter == NULL) return 0;

-  memset(iter, 0, sizeof(*iter));
+  WEBP_UNSAFE_MEMSET(iter, 0, sizeof(*iter));
  iter->private_ = (void*)dmux;
  return SetChunk(fourcc, chunk_num, iter);
 }
@@ -969,7 +970,4 @@ int WebPDemuxPrevChunk(WebPChunkIterator* iter) {
  return 0;
 }

-void WebPDemuxReleaseChunkIterator(WebPChunkIterator* iter) {
-  (void)iter;
-}
-
+void WebPDemuxReleaseChunkIterator(WebPChunkIterator* iter) { (void)iter; }
--- a/src/demux/libwebpdemux.rc
+++ b/src/demux/libwebpdemux.rc
@@ -6,8 +6,8 @@
 LANGUAGE LANG_ENGLISH, SUBLANG_ENGLISH_US

 VS_VERSION_INFO VERSIONINFO
- FILEVERSION 1,0,4,0
- PRODUCTVERSION 1,0,4,0
+ FILEVERSION 1,0,6,0
+ PRODUCTVERSION 1,0,6,0
 FILEFLAGSMASK 0x3fL
 #ifdef _DEBUG
 FILEFLAGS 0x1L
@@ -24,12 +24,12 @@ BEGIN
        BEGIN
            VALUE "CompanyName", "Google, Inc."
            VALUE "FileDescription", "libwebpdemux DLL"
-            VALUE "FileVersion", "1.4.0"
+            VALUE "FileVersion", "1.6.0"
            VALUE "InternalName", "libwebpdemux.dll"
-            VALUE "LegalCopyright", "Copyright (C) 2024"
+            VALUE "LegalCopyright", "Copyright (C) 2025"
            VALUE "OriginalFilename", "libwebpdemux.dll"
            VALUE "ProductName", "WebP Image Demuxer"
-            VALUE "ProductVersion", "1.4.0"
+            VALUE "ProductVersion", "1.6.0"
        END
    END
    BLOCK "VarFileInfo"
--- a/src/dsp/Makefile.am
+++ b/src/dsp/Makefile.am
@@ -5,6 +5,8 @@ noinst_LTLIBRARIES += libwebpdsp_sse2.la
 noinst_LTLIBRARIES += libwebpdspdecode_sse2.la
 noinst_LTLIBRARIES += libwebpdsp_sse41.la
 noinst_LTLIBRARIES += libwebpdspdecode_sse41.la
+noinst_LTLIBRARIES += libwebpdsp_avx2.la
+noinst_LTLIBRARIES += libwebpdspdecode_avx2.la
 noinst_LTLIBRARIES += libwebpdsp_neon.la
 noinst_LTLIBRARIES += libwebpdspdecode_neon.la
 noinst_LTLIBRARIES += libwebpdsp_msa.la
@@ -44,6 +46,11 @@ ENC_SOURCES += lossless_enc.c
 ENC_SOURCES += quant.h
 ENC_SOURCES += ssim.c

+libwebpdspdecode_avx2_la_SOURCES =
+libwebpdspdecode_avx2_la_SOURCES += lossless_avx2.c
+libwebpdspdecode_avx2_la_CPPFLAGS = $(libwebpdsp_la_CPPFLAGS)
+libwebpdspdecode_avx2_la_CFLAGS = $(AM_CFLAGS) $(AVX2_FLAGS)
+
 libwebpdspdecode_sse41_la_SOURCES =
 libwebpdspdecode_sse41_la_SOURCES += alpha_processing_sse41.c
 libwebpdspdecode_sse41_la_SOURCES += dec_sse41.c
@@ -123,6 +130,12 @@ libwebpdsp_sse41_la_CPPFLAGS = $(libwebpdsp_la_CPPFLAGS)
 libwebpdsp_sse41_la_CFLAGS = $(AM_CFLAGS) $(SSE41_FLAGS)
 libwebpdsp_sse41_la_LIBADD = libwebpdspdecode_sse41.la

+libwebpdsp_avx2_la_SOURCES =
+libwebpdsp_avx2_la_SOURCES += lossless_enc_avx2.c
+libwebpdsp_avx2_la_CPPFLAGS = $(libwebpdsp_la_CPPFLAGS)
+libwebpdsp_avx2_la_CFLAGS = $(AM_CFLAGS) $(AVX2_FLAGS)
+libwebpdsp_avx2_la_LIBADD = libwebpdspdecode_avx2.la
+
 libwebpdsp_neon_la_SOURCES =
 libwebpdsp_neon_la_SOURCES += cost_neon.c
 libwebpdsp_neon_la_SOURCES += enc_neon.c
@@ -167,6 +180,7 @@ libwebpdsp_la_LDFLAGS = -lm
 libwebpdsp_la_LIBADD =
 libwebpdsp_la_LIBADD += libwebpdsp_sse2.la
 libwebpdsp_la_LIBADD += libwebpdsp_sse41.la
+libwebpdsp_la_LIBADD += libwebpdsp_avx2.la
 libwebpdsp_la_LIBADD += libwebpdsp_neon.la
 libwebpdsp_la_LIBADD += libwebpdsp_msa.la
 libwebpdsp_la_LIBADD += libwebpdsp_mips32.la
@@ -180,6 +194,7 @@ if BUILD_LIBWEBPDECODER
  libwebpdspdecode_la_LIBADD =
  libwebpdspdecode_la_LIBADD += libwebpdspdecode_sse2.la
  libwebpdspdecode_la_LIBADD += libwebpdspdecode_sse41.la
+  libwebpdspdecode_la_LIBADD += libwebpdspdecode_avx2.la
  libwebpdspdecode_la_LIBADD += libwebpdspdecode_neon.la
  libwebpdspdecode_la_LIBADD += libwebpdspdecode_msa.la
  libwebpdspdecode_la_LIBADD += libwebpdspdecode_mips32.la
--- a/src/dsp/alpha_processing.c
+++ b/src/dsp/alpha_processing.c
@@ -12,17 +12,20 @@
 // Author: Skal (pascal.massimino@gmail.com)

 #include <assert.h>
+#include <stddef.h>
+
+#include "src/dsp/cpu.h"
 #include "src/dsp/dsp.h"
+#include "src/webp/types.h"

 // Tables can be faster on some platform but incur some extra binary size (~2k).
 #if !defined(USE_TABLES_FOR_ALPHA_MULT)
-#define USE_TABLES_FOR_ALPHA_MULT 0   // ALTERNATE_CODE
+#define USE_TABLES_FOR_ALPHA_MULT 0  // ALTERNATE_CODE
 #endif

-
 // -----------------------------------------------------------------------------

-#define MFIX 24    // 24bit fixed-point arithmetic
+#define MFIX 24  // 24bit fixed-point arithmetic
 #define HALF ((1u << MFIX) >> 1)
 #define KINV_255 ((1u << MFIX) / 255u)

@@ -35,95 +38,94 @@ static uint32_t Mult(uint8_t x, uint32_t mult) {
 #if (USE_TABLES_FOR_ALPHA_MULT == 1)

 static const uint32_t kMultTables[2][256] = {
-  {    // (255u << MFIX) / alpha
-    0x00000000, 0xff000000, 0x7f800000, 0x55000000, 0x3fc00000, 0x33000000,
-    0x2a800000, 0x246db6db, 0x1fe00000, 0x1c555555, 0x19800000, 0x172e8ba2,
-    0x15400000, 0x139d89d8, 0x1236db6d, 0x11000000, 0x0ff00000, 0x0f000000,
-    0x0e2aaaaa, 0x0d6bca1a, 0x0cc00000, 0x0c249249, 0x0b9745d1, 0x0b1642c8,
-    0x0aa00000, 0x0a333333, 0x09cec4ec, 0x0971c71c, 0x091b6db6, 0x08cb08d3,
-    0x08800000, 0x0839ce73, 0x07f80000, 0x07ba2e8b, 0x07800000, 0x07492492,
-    0x07155555, 0x06e45306, 0x06b5e50d, 0x0689d89d, 0x06600000, 0x063831f3,
-    0x06124924, 0x05ee23b8, 0x05cba2e8, 0x05aaaaaa, 0x058b2164, 0x056cefa8,
-    0x05500000, 0x05343eb1, 0x05199999, 0x05000000, 0x04e76276, 0x04cfb2b7,
-    0x04b8e38e, 0x04a2e8ba, 0x048db6db, 0x0479435e, 0x04658469, 0x045270d0,
-    0x04400000, 0x042e29f7, 0x041ce739, 0x040c30c3, 0x03fc0000, 0x03ec4ec4,
-    0x03dd1745, 0x03ce540f, 0x03c00000, 0x03b21642, 0x03a49249, 0x03976fc6,
-    0x038aaaaa, 0x037e3f1f, 0x03722983, 0x03666666, 0x035af286, 0x034fcace,
-    0x0344ec4e, 0x033a5440, 0x03300000, 0x0325ed09, 0x031c18f9, 0x0312818a,
-    0x03092492, 0x03000000, 0x02f711dc, 0x02ee5846, 0x02e5d174, 0x02dd7baf,
-    0x02d55555, 0x02cd5cd5, 0x02c590b2, 0x02bdef7b, 0x02b677d4, 0x02af286b,
-    0x02a80000, 0x02a0fd5c, 0x029a1f58, 0x029364d9, 0x028ccccc, 0x0286562d,
-    0x02800000, 0x0279c952, 0x0273b13b, 0x026db6db, 0x0267d95b, 0x026217ec,
-    0x025c71c7, 0x0256e62a, 0x0251745d, 0x024c1bac, 0x0246db6d, 0x0241b2f9,
-    0x023ca1af, 0x0237a6f4, 0x0232c234, 0x022df2df, 0x02293868, 0x02249249,
-    0x02200000, 0x021b810e, 0x021714fb, 0x0212bb51, 0x020e739c, 0x020a3d70,
-    0x02061861, 0x02020408, 0x01fe0000, 0x01fa0be8, 0x01f62762, 0x01f25213,
-    0x01ee8ba2, 0x01ead3ba, 0x01e72a07, 0x01e38e38, 0x01e00000, 0x01dc7f10,
-    0x01d90b21, 0x01d5a3e9, 0x01d24924, 0x01cefa8d, 0x01cbb7e3, 0x01c880e5,
-    0x01c55555, 0x01c234f7, 0x01bf1f8f, 0x01bc14e5, 0x01b914c1, 0x01b61eed,
-    0x01b33333, 0x01b05160, 0x01ad7943, 0x01aaaaaa, 0x01a7e567, 0x01a5294a,
-    0x01a27627, 0x019fcbd2, 0x019d2a20, 0x019a90e7, 0x01980000, 0x01957741,
-    0x0192f684, 0x01907da4, 0x018e0c7c, 0x018ba2e8, 0x018940c5, 0x0186e5f0,
-    0x01849249, 0x018245ae, 0x01800000, 0x017dc11f, 0x017b88ee, 0x0179574e,
-    0x01772c23, 0x01750750, 0x0172e8ba, 0x0170d045, 0x016ebdd7, 0x016cb157,
-    0x016aaaaa, 0x0168a9b9, 0x0166ae6a, 0x0164b8a7, 0x0162c859, 0x0160dd67,
-    0x015ef7bd, 0x015d1745, 0x015b3bea, 0x01596596, 0x01579435, 0x0155c7b4,
-    0x01540000, 0x01523d03, 0x01507eae, 0x014ec4ec, 0x014d0fac, 0x014b5edc,
-    0x0149b26c, 0x01480a4a, 0x01466666, 0x0144c6af, 0x01432b16, 0x0141938b,
-    0x01400000, 0x013e7063, 0x013ce4a9, 0x013b5cc0, 0x0139d89d, 0x01385830,
-    0x0136db6d, 0x01356246, 0x0133ecad, 0x01327a97, 0x01310bf6, 0x012fa0be,
-    0x012e38e3, 0x012cd459, 0x012b7315, 0x012a150a, 0x0128ba2e, 0x01276276,
-    0x01260dd6, 0x0124bc44, 0x01236db6, 0x01222222, 0x0120d97c, 0x011f93bc,
-    0x011e50d7, 0x011d10c4, 0x011bd37a, 0x011a98ef, 0x0119611a, 0x01182bf2,
-    0x0116f96f, 0x0115c988, 0x01149c34, 0x0113716a, 0x01124924, 0x01112358,
-    0x01100000, 0x010edf12, 0x010dc087, 0x010ca458, 0x010b8a7d, 0x010a72f0,
-    0x01095da8, 0x01084a9f, 0x010739ce, 0x01062b2e, 0x01051eb8, 0x01041465,
-    0x01030c30, 0x01020612, 0x01010204, 0x01000000 },
-  {   // alpha * KINV_255
-    0x00000000, 0x00010101, 0x00020202, 0x00030303, 0x00040404, 0x00050505,
-    0x00060606, 0x00070707, 0x00080808, 0x00090909, 0x000a0a0a, 0x000b0b0b,
-    0x000c0c0c, 0x000d0d0d, 0x000e0e0e, 0x000f0f0f, 0x00101010, 0x00111111,
-    0x00121212, 0x00131313, 0x00141414, 0x00151515, 0x00161616, 0x00171717,
-    0x00181818, 0x00191919, 0x001a1a1a, 0x001b1b1b, 0x001c1c1c, 0x001d1d1d,
-    0x001e1e1e, 0x001f1f1f, 0x00202020, 0x00212121, 0x00222222, 0x00232323,
-    0x00242424, 0x00252525, 0x00262626, 0x00272727, 0x00282828, 0x00292929,
-    0x002a2a2a, 0x002b2b2b, 0x002c2c2c, 0x002d2d2d, 0x002e2e2e, 0x002f2f2f,
-    0x00303030, 0x00313131, 0x00323232, 0x00333333, 0x00343434, 0x00353535,
-    0x00363636, 0x00373737, 0x00383838, 0x00393939, 0x003a3a3a, 0x003b3b3b,
-    0x003c3c3c, 0x003d3d3d, 0x003e3e3e, 0x003f3f3f, 0x00404040, 0x00414141,
-    0x00424242, 0x00434343, 0x00444444, 0x00454545, 0x00464646, 0x00474747,
-    0x00484848, 0x00494949, 0x004a4a4a, 0x004b4b4b, 0x004c4c4c, 0x004d4d4d,
-    0x004e4e4e, 0x004f4f4f, 0x00505050, 0x00515151, 0x00525252, 0x00535353,
-    0x00545454, 0x00555555, 0x00565656, 0x00575757, 0x00585858, 0x00595959,
-    0x005a5a5a, 0x005b5b5b, 0x005c5c5c, 0x005d5d5d, 0x005e5e5e, 0x005f5f5f,
-    0x00606060, 0x00616161, 0x00626262, 0x00636363, 0x00646464, 0x00656565,
-    0x00666666, 0x00676767, 0x00686868, 0x00696969, 0x006a6a6a, 0x006b6b6b,
-    0x006c6c6c, 0x006d6d6d, 0x006e6e6e, 0x006f6f6f, 0x00707070, 0x00717171,
-    0x00727272, 0x00737373, 0x00747474, 0x00757575, 0x00767676, 0x00777777,
-    0x00787878, 0x00797979, 0x007a7a7a, 0x007b7b7b, 0x007c7c7c, 0x007d7d7d,
-    0x007e7e7e, 0x007f7f7f, 0x00808080, 0x00818181, 0x00828282, 0x00838383,
-    0x00848484, 0x00858585, 0x00868686, 0x00878787, 0x00888888, 0x00898989,
-    0x008a8a8a, 0x008b8b8b, 0x008c8c8c, 0x008d8d8d, 0x008e8e8e, 0x008f8f8f,
-    0x00909090, 0x00919191, 0x00929292, 0x00939393, 0x00949494, 0x00959595,
-    0x00969696, 0x00979797, 0x00989898, 0x00999999, 0x009a9a9a, 0x009b9b9b,
-    0x009c9c9c, 0x009d9d9d, 0x009e9e9e, 0x009f9f9f, 0x00a0a0a0, 0x00a1a1a1,
-    0x00a2a2a2, 0x00a3a3a3, 0x00a4a4a4, 0x00a5a5a5, 0x00a6a6a6, 0x00a7a7a7,
-    0x00a8a8a8, 0x00a9a9a9, 0x00aaaaaa, 0x00ababab, 0x00acacac, 0x00adadad,
-    0x00aeaeae, 0x00afafaf, 0x00b0b0b0, 0x00b1b1b1, 0x00b2b2b2, 0x00b3b3b3,
-    0x00b4b4b4, 0x00b5b5b5, 0x00b6b6b6, 0x00b7b7b7, 0x00b8b8b8, 0x00b9b9b9,
-    0x00bababa, 0x00bbbbbb, 0x00bcbcbc, 0x00bdbdbd, 0x00bebebe, 0x00bfbfbf,
-    0x00c0c0c0, 0x00c1c1c1, 0x00c2c2c2, 0x00c3c3c3, 0x00c4c4c4, 0x00c5c5c5,
-    0x00c6c6c6, 0x00c7c7c7, 0x00c8c8c8, 0x00c9c9c9, 0x00cacaca, 0x00cbcbcb,
-    0x00cccccc, 0x00cdcdcd, 0x00cecece, 0x00cfcfcf, 0x00d0d0d0, 0x00d1d1d1,
-    0x00d2d2d2, 0x00d3d3d3, 0x00d4d4d4, 0x00d5d5d5, 0x00d6d6d6, 0x00d7d7d7,
-    0x00d8d8d8, 0x00d9d9d9, 0x00dadada, 0x00dbdbdb, 0x00dcdcdc, 0x00dddddd,
-    0x00dedede, 0x00dfdfdf, 0x00e0e0e0, 0x00e1e1e1, 0x00e2e2e2, 0x00e3e3e3,
-    0x00e4e4e4, 0x00e5e5e5, 0x00e6e6e6, 0x00e7e7e7, 0x00e8e8e8, 0x00e9e9e9,
-    0x00eaeaea, 0x00ebebeb, 0x00ececec, 0x00ededed, 0x00eeeeee, 0x00efefef,
-    0x00f0f0f0, 0x00f1f1f1, 0x00f2f2f2, 0x00f3f3f3, 0x00f4f4f4, 0x00f5f5f5,
-    0x00f6f6f6, 0x00f7f7f7, 0x00f8f8f8, 0x00f9f9f9, 0x00fafafa, 0x00fbfbfb,
-    0x00fcfcfc, 0x00fdfdfd, 0x00fefefe, 0x00ffffff }
-};
+    // (255u << MFIX) / alpha
+    {0x00000000, 0xff000000, 0x7f800000, 0x55000000, 0x3fc00000, 0x33000000,
+     0x2a800000, 0x246db6db, 0x1fe00000, 0x1c555555, 0x19800000, 0x172e8ba2,
+     0x15400000, 0x139d89d8, 0x1236db6d, 0x11000000, 0x0ff00000, 0x0f000000,
+     0x0e2aaaaa, 0x0d6bca1a, 0x0cc00000, 0x0c249249, 0x0b9745d1, 0x0b1642c8,
+     0x0aa00000, 0x0a333333, 0x09cec4ec, 0x0971c71c, 0x091b6db6, 0x08cb08d3,
+     0x08800000, 0x0839ce73, 0x07f80000, 0x07ba2e8b, 0x07800000, 0x07492492,
+     0x07155555, 0x06e45306, 0x06b5e50d, 0x0689d89d, 0x06600000, 0x063831f3,
+     0x06124924, 0x05ee23b8, 0x05cba2e8, 0x05aaaaaa, 0x058b2164, 0x056cefa8,
+     0x05500000, 0x05343eb1, 0x05199999, 0x05000000, 0x04e76276, 0x04cfb2b7,
+     0x04b8e38e, 0x04a2e8ba, 0x048db6db, 0x0479435e, 0x04658469, 0x045270d0,
+     0x04400000, 0x042e29f7, 0x041ce739, 0x040c30c3, 0x03fc0000, 0x03ec4ec4,
+     0x03dd1745, 0x03ce540f, 0x03c00000, 0x03b21642, 0x03a49249, 0x03976fc6,
+     0x038aaaaa, 0x037e3f1f, 0x03722983, 0x03666666, 0x035af286, 0x034fcace,
+     0x0344ec4e, 0x033a5440, 0x03300000, 0x0325ed09, 0x031c18f9, 0x0312818a,
+     0x03092492, 0x03000000, 0x02f711dc, 0x02ee5846, 0x02e5d174, 0x02dd7baf,
+     0x02d55555, 0x02cd5cd5, 0x02c590b2, 0x02bdef7b, 0x02b677d4, 0x02af286b,
+     0x02a80000, 0x02a0fd5c, 0x029a1f58, 0x029364d9, 0x028ccccc, 0x0286562d,
+     0x02800000, 0x0279c952, 0x0273b13b, 0x026db6db, 0x0267d95b, 0x026217ec,
+     0x025c71c7, 0x0256e62a, 0x0251745d, 0x024c1bac, 0x0246db6d, 0x0241b2f9,
+     0x023ca1af, 0x0237a6f4, 0x0232c234, 0x022df2df, 0x02293868, 0x02249249,
+     0x02200000, 0x021b810e, 0x021714fb, 0x0212bb51, 0x020e739c, 0x020a3d70,
+     0x02061861, 0x02020408, 0x01fe0000, 0x01fa0be8, 0x01f62762, 0x01f25213,
+     0x01ee8ba2, 0x01ead3ba, 0x01e72a07, 0x01e38e38, 0x01e00000, 0x01dc7f10,
+     0x01d90b21, 0x01d5a3e9, 0x01d24924, 0x01cefa8d, 0x01cbb7e3, 0x01c880e5,
+     0x01c55555, 0x01c234f7, 0x01bf1f8f, 0x01bc14e5, 0x01b914c1, 0x01b61eed,
+     0x01b33333, 0x01b05160, 0x01ad7943, 0x01aaaaaa, 0x01a7e567, 0x01a5294a,
+     0x01a27627, 0x019fcbd2, 0x019d2a20, 0x019a90e7, 0x01980000, 0x01957741,
+     0x0192f684, 0x01907da4, 0x018e0c7c, 0x018ba2e8, 0x018940c5, 0x0186e5f0,
+     0x01849249, 0x018245ae, 0x01800000, 0x017dc11f, 0x017b88ee, 0x0179574e,
+     0x01772c23, 0x01750750, 0x0172e8ba, 0x0170d045, 0x016ebdd7, 0x016cb157,
+     0x016aaaaa, 0x0168a9b9, 0x0166ae6a, 0x0164b8a7, 0x0162c859, 0x0160dd67,
+     0x015ef7bd, 0x015d1745, 0x015b3bea, 0x01596596, 0x01579435, 0x0155c7b4,
+     0x01540000, 0x01523d03, 0x01507eae, 0x014ec4ec, 0x014d0fac, 0x014b5edc,
+     0x0149b26c, 0x01480a4a, 0x01466666, 0x0144c6af, 0x01432b16, 0x0141938b,
+     0x01400000, 0x013e7063, 0x013ce4a9, 0x013b5cc0, 0x0139d89d, 0x01385830,
+     0x0136db6d, 0x01356246, 0x0133ecad, 0x01327a97, 0x01310bf6, 0x012fa0be,
+     0x012e38e3, 0x012cd459, 0x012b7315, 0x012a150a, 0x0128ba2e, 0x01276276,
+     0x01260dd6, 0x0124bc44, 0x01236db6, 0x01222222, 0x0120d97c, 0x011f93bc,
+     0x011e50d7, 0x011d10c4, 0x011bd37a, 0x011a98ef, 0x0119611a, 0x01182bf2,
+     0x0116f96f, 0x0115c988, 0x01149c34, 0x0113716a, 0x01124924, 0x01112358,
+     0x01100000, 0x010edf12, 0x010dc087, 0x010ca458, 0x010b8a7d, 0x010a72f0,
+     0x01095da8, 0x01084a9f, 0x010739ce, 0x01062b2e, 0x01051eb8, 0x01041465,
+     0x01030c30, 0x01020612, 0x01010204, 0x01000000},
+    // alpha * KINV_255
+    {0x00000000, 0x00010101, 0x00020202, 0x00030303, 0x00040404, 0x00050505,
+     0x00060606, 0x00070707, 0x00080808, 0x00090909, 0x000a0a0a, 0x000b0b0b,
+     0x000c0c0c, 0x000d0d0d, 0x000e0e0e, 0x000f0f0f, 0x00101010, 0x00111111,
+     0x00121212, 0x00131313, 0x00141414, 0x00151515, 0x00161616, 0x00171717,
+     0x00181818, 0x00191919, 0x001a1a1a, 0x001b1b1b, 0x001c1c1c, 0x001d1d1d,
+     0x001e1e1e, 0x001f1f1f, 0x00202020, 0x00212121, 0x00222222, 0x00232323,
+     0x00242424, 0x00252525, 0x00262626, 0x00272727, 0x00282828, 0x00292929,
+     0x002a2a2a, 0x002b2b2b, 0x002c2c2c, 0x002d2d2d, 0x002e2e2e, 0x002f2f2f,
+     0x00303030, 0x00313131, 0x00323232, 0x00333333, 0x00343434, 0x00353535,
+     0x00363636, 0x00373737, 0x00383838, 0x00393939, 0x003a3a3a, 0x003b3b3b,
+     0x003c3c3c, 0x003d3d3d, 0x003e3e3e, 0x003f3f3f, 0x00404040, 0x00414141,
+     0x00424242, 0x00434343, 0x00444444, 0x00454545, 0x00464646, 0x00474747,
+     0x00484848, 0x00494949, 0x004a4a4a, 0x004b4b4b, 0x004c4c4c, 0x004d4d4d,
+     0x004e4e4e, 0x004f4f4f, 0x00505050, 0x00515151, 0x00525252, 0x00535353,
+     0x00545454, 0x00555555, 0x00565656, 0x00575757, 0x00585858, 0x00595959,
+     0x005a5a5a, 0x005b5b5b, 0x005c5c5c, 0x005d5d5d, 0x005e5e5e, 0x005f5f5f,
+     0x00606060, 0x00616161, 0x00626262, 0x00636363, 0x00646464, 0x00656565,
+     0x00666666, 0x00676767, 0x00686868, 0x00696969, 0x006a6a6a, 0x006b6b6b,
+     0x006c6c6c, 0x006d6d6d, 0x006e6e6e, 0x006f6f6f, 0x00707070, 0x00717171,
+     0x00727272, 0x00737373, 0x00747474, 0x00757575, 0x00767676, 0x00777777,
+     0x00787878, 0x00797979, 0x007a7a7a, 0x007b7b7b, 0x007c7c7c, 0x007d7d7d,
+     0x007e7e7e, 0x007f7f7f, 0x00808080, 0x00818181, 0x00828282, 0x00838383,
+     0x00848484, 0x00858585, 0x00868686, 0x00878787, 0x00888888, 0x00898989,
+     0x008a8a8a, 0x008b8b8b, 0x008c8c8c, 0x008d8d8d, 0x008e8e8e, 0x008f8f8f,
+     0x00909090, 0x00919191, 0x00929292, 0x00939393, 0x00949494, 0x00959595,
+     0x00969696, 0x00979797, 0x00989898, 0x00999999, 0x009a9a9a, 0x009b9b9b,
+     0x009c9c9c, 0x009d9d9d, 0x009e9e9e, 0x009f9f9f, 0x00a0a0a0, 0x00a1a1a1,
+     0x00a2a2a2, 0x00a3a3a3, 0x00a4a4a4, 0x00a5a5a5, 0x00a6a6a6, 0x00a7a7a7,
+     0x00a8a8a8, 0x00a9a9a9, 0x00aaaaaa, 0x00ababab, 0x00acacac, 0x00adadad,
+     0x00aeaeae, 0x00afafaf, 0x00b0b0b0, 0x00b1b1b1, 0x00b2b2b2, 0x00b3b3b3,
+     0x00b4b4b4, 0x00b5b5b5, 0x00b6b6b6, 0x00b7b7b7, 0x00b8b8b8, 0x00b9b9b9,
+     0x00bababa, 0x00bbbbbb, 0x00bcbcbc, 0x00bdbdbd, 0x00bebebe, 0x00bfbfbf,
+     0x00c0c0c0, 0x00c1c1c1, 0x00c2c2c2, 0x00c3c3c3, 0x00c4c4c4, 0x00c5c5c5,
+     0x00c6c6c6, 0x00c7c7c7, 0x00c8c8c8, 0x00c9c9c9, 0x00cacaca, 0x00cbcbcb,
+     0x00cccccc, 0x00cdcdcd, 0x00cecece, 0x00cfcfcf, 0x00d0d0d0, 0x00d1d1d1,
+     0x00d2d2d2, 0x00d3d3d3, 0x00d4d4d4, 0x00d5d5d5, 0x00d6d6d6, 0x00d7d7d7,
+     0x00d8d8d8, 0x00d9d9d9, 0x00dadada, 0x00dbdbdb, 0x00dcdcdc, 0x00dddddd,
+     0x00dedede, 0x00dfdfdf, 0x00e0e0e0, 0x00e1e1e1, 0x00e2e2e2, 0x00e3e3e3,
+     0x00e4e4e4, 0x00e5e5e5, 0x00e6e6e6, 0x00e7e7e7, 0x00e8e8e8, 0x00e9e9e9,
+     0x00eaeaea, 0x00ebebeb, 0x00ececec, 0x00ededed, 0x00eeeeee, 0x00efefef,
+     0x00f0f0f0, 0x00f1f1f1, 0x00f2f2f2, 0x00f3f3f3, 0x00f4f4f4, 0x00f5f5f5,
+     0x00f6f6f6, 0x00f7f7f7, 0x00f8f8f8, 0x00f9f9f9, 0x00fafafa, 0x00fbfbfb,
+     0x00fcfcfc, 0x00fdfdfd, 0x00fefefe, 0x00ffffff}};

 static WEBP_INLINE uint32_t GetScale(uint32_t a, int inverse) {
  return kMultTables[!inverse][a];
@@ -141,15 +143,15 @@ void WebPMultARGBRow_C(uint32_t* const ptr, int width, int inverse) {
  int x;
  for (x = 0; x < width; ++x) {
    const uint32_t argb = ptr[x];
-    if (argb < 0xff000000u) {      // alpha < 255
-      if (argb <= 0x00ffffffu) {   // alpha == 0
+    if (argb < 0xff000000u) {     // alpha < 255
+      if (argb <= 0x00ffffffu) {  // alpha == 0
        ptr[x] = 0;
      } else {
        const uint32_t alpha = (argb >> 24) & 0xff;
        const uint32_t scale = GetScale(alpha, inverse);
        uint32_t out = argb & 0xff000000u;
-        out |= Mult(argb >>  0, scale) <<  0;
-        out |= Mult(argb >>  8, scale) <<  8;
+        out |= Mult(argb >> 0, scale) << 0;
+        out |= Mult(argb >> 8, scale) << 8;
        out |= Mult(argb >> 16, scale) << 16;
        ptr[x] = out;
      }
@@ -158,8 +160,8 @@ void WebPMultARGBRow_C(uint32_t* const ptr, int width, int inverse) {
 }

 void WebPMultRow_C(uint8_t* WEBP_RESTRICT const ptr,
-                   const uint8_t* WEBP_RESTRICT const alpha,
-                   int width, int inverse) {
+                   const uint8_t* WEBP_RESTRICT const alpha, int width,
+                   int inverse) {
  int x;
  for (x = 0; x < width; ++x) {
    const uint32_t a = alpha[x];
@@ -180,8 +182,8 @@ void WebPMultRow_C(uint8_t* WEBP_RESTRICT const ptr,

 void (*WebPMultARGBRow)(uint32_t* const ptr, int width, int inverse);
 void (*WebPMultRow)(uint8_t* WEBP_RESTRICT const ptr,
-                    const uint8_t* WEBP_RESTRICT const alpha,
-                    int width, int inverse);
+                    const uint8_t* WEBP_RESTRICT const alpha, int width,
+                    int inverse);

 //------------------------------------------------------------------------------
 // Generic per-plane calls
@@ -214,17 +216,17 @@ void WebPMultRows(uint8_t* WEBP_RESTRICT ptr, int stride,
 // (x * a * 32897) >> 23 is bit-wise equivalent to (int)(x * a / 255.)
 // for all 8bit x or a. For bit-wise equivalence to (int)(x * a / 255. + .5),
 // one can use instead: (x * a * 65793 + (1 << 23)) >> 24
-#if 1     // (int)(x * a / 255.)
-#define MULTIPLIER(a)   ((a) * 32897U)
+#if 1  // (int)(x * a / 255.)
+#define MULTIPLIER(a) ((a) * 32897U)
 #define PREMULTIPLY(x, m) (((x) * (m)) >> 23)
-#else     // (int)(x * a / 255. + .5)
+#else  // (int)(x * a / 255. + .5)
 #define MULTIPLIER(a) ((a) * 65793U)
 #define PREMULTIPLY(x, m) (((x) * (m) + (1U << 23)) >> 24)
 #endif

 #if !WEBP_NEON_OMIT_C_CODE
-static void ApplyAlphaMultiply_C(uint8_t* rgba, int alpha_first,
-                                 int w, int h, int stride) {
+static void ApplyAlphaMultiply_C(uint8_t* rgba, int alpha_first, int w, int h,
+                                 int stride) {
  while (h-- > 0) {
    uint8_t* const rgb = rgba + (alpha_first ? 1 : 0);
    const uint8_t* const alpha = rgba + (alpha_first ? 0 : 3);
@@ -247,7 +249,7 @@ static void ApplyAlphaMultiply_C(uint8_t* rgba, int alpha_first,

 // rgbA4444

-#define MULTIPLIER(a)  ((a) * 0x1111)    // 0x1111 ~= (1 << 16) / 15
+#define MULTIPLIER(a) ((a) * 0x1111)  // 0x1111 ~= (1 << 16) / 15

 static WEBP_INLINE uint8_t dither_hi(uint8_t x) {
  return (x & 0xf0) | (x >> 4);
@@ -261,8 +263,8 @@ static WEBP_INLINE uint8_t multiply(uint8_t x, uint32_t m) {
  return (x * m) >> 16;
 }

-static WEBP_INLINE void ApplyAlphaMultiply4444_C(uint8_t* rgba4444,
-                                                 int w, int h, int stride,
+static WEBP_INLINE void ApplyAlphaMultiply4444_C(uint8_t* rgba4444, int w,
+                                                 int h, int stride,
                                                 int rg_byte_pos /* 0 or 1 */) {
  while (h-- > 0) {
    int i;
@@ -282,8 +284,8 @@ static WEBP_INLINE void ApplyAlphaMultiply4444_C(uint8_t* rgba4444,
 }
 #undef MULTIPLIER

-static void ApplyAlphaMultiply_16b_C(uint8_t* rgba4444,
-                                     int w, int h, int stride) {
+static void ApplyAlphaMultiply_16b_C(uint8_t* rgba4444, int w, int h,
+                                     int stride) {
 #if (WEBP_SWAP_16BIT_CSP == 1)
  ApplyAlphaMultiply4444_C(rgba4444, w, h, stride, 1);
 #else
@@ -293,8 +295,8 @@ static void ApplyAlphaMultiply_16b_C(uint8_t* rgba4444,

 #if !WEBP_NEON_OMIT_C_CODE
 static int DispatchAlpha_C(const uint8_t* WEBP_RESTRICT alpha, int alpha_stride,
-                           int width, int height,
-                           uint8_t* WEBP_RESTRICT dst, int dst_stride) {
+                           int width, int height, uint8_t* WEBP_RESTRICT dst,
+                           int dst_stride) {
  uint32_t alpha_mask = 0xff;
  int i, j;

@@ -326,8 +328,8 @@ static void DispatchAlphaToGreen_C(const uint8_t* WEBP_RESTRICT alpha,
 }

 static int ExtractAlpha_C(const uint8_t* WEBP_RESTRICT argb, int argb_stride,
-                          int width, int height,
-                          uint8_t* WEBP_RESTRICT alpha, int alpha_stride) {
+                          int width, int height, uint8_t* WEBP_RESTRICT alpha,
+                          int alpha_stride) {
  uint8_t alpha_mask = 0xff;
  int i, j;

@@ -353,19 +355,25 @@ static void ExtractGreen_C(const uint32_t* WEBP_RESTRICT argb,
 //------------------------------------------------------------------------------

 static int HasAlpha8b_C(const uint8_t* src, int length) {
-  while (length-- > 0) if (*src++ != 0xff) return 1;
+  while (length-- > 0) {
+    if (*src++ != 0xff) return 1;
+  }
  return 0;
 }

 static int HasAlpha32b_C(const uint8_t* src, int length) {
  int x;
-  for (x = 0; length-- > 0; x += 4) if (src[x] != 0xff) return 1;
+  for (x = 0; length-- > 0; x += 4) {
+    if (src[x] != 0xff) return 1;
+  }
  return 0;
 }

 static void AlphaReplace_C(uint32_t* src, int length, uint32_t color) {
  int x;
-  for (x = 0; x < length; ++x) if ((src[x] >> 24) == 0) src[x] = color;
+  for (x = 0; x < length; ++x) {
+    if ((src[x] >> 24) == 0) src[x] = color;
+  }
 }

 //------------------------------------------------------------------------------
@@ -379,8 +387,8 @@ static WEBP_INLINE uint32_t MakeARGB32(int a, int r, int g, int b) {
 static void PackARGB_C(const uint8_t* WEBP_RESTRICT a,
                       const uint8_t* WEBP_RESTRICT r,
                       const uint8_t* WEBP_RESTRICT g,
-                       const uint8_t* WEBP_RESTRICT b,
-                       int len, uint32_t* WEBP_RESTRICT out) {
+                       const uint8_t* WEBP_RESTRICT b, int len,
+                       uint32_t* WEBP_RESTRICT out) {
  int i;
  for (i = 0; i < len; ++i) {
    out[i] = MakeARGB32(a[4 * i], r[4 * i], g[4 * i], b[4 * i]);
@@ -390,8 +398,8 @@ static void PackARGB_C(const uint8_t* WEBP_RESTRICT a,

 static void PackRGB_C(const uint8_t* WEBP_RESTRICT r,
                      const uint8_t* WEBP_RESTRICT g,
-                      const uint8_t* WEBP_RESTRICT b,
-                      int len, int step, uint32_t* WEBP_RESTRICT out) {
+                      const uint8_t* WEBP_RESTRICT b, int len, int step,
+                      uint32_t* WEBP_RESTRICT out) {
  int i, offset = 0;
  for (i = 0; i < len; ++i) {
    out[i] = MakeARGB32(0xff, r[offset], g[offset], b[offset]);
@@ -415,8 +423,8 @@ void (*WebPPackARGB)(const uint8_t* a, const uint8_t* r, const uint8_t* g,
 #endif
 void (*WebPPackRGB)(const uint8_t* WEBP_RESTRICT r,
                    const uint8_t* WEBP_RESTRICT g,
-                    const uint8_t* WEBP_RESTRICT b,
-                    int len, int step, uint32_t* WEBP_RESTRICT out);
+                    const uint8_t* WEBP_RESTRICT b, int len, int step,
+                    uint32_t* WEBP_RESTRICT out);

 int (*WebPHasAlpha8b)(const uint8_t* src, int length);
 int (*WebPHasAlpha32b)(const uint8_t* src, int length);
--- a/src/dsp/alpha_processing_mips_dsp_r2.c
+++ b/src/dsp/alpha_processing_mips_dsp_r2.c
@@ -17,8 +17,8 @@
 #if defined(WEBP_USE_MIPS_DSP_R2)

 static int DispatchAlpha_MIPSdspR2(const uint8_t* alpha, int alpha_stride,
-                                   int width, int height,
-                                   uint8_t* dst, int dst_stride) {
+                                   int width, int height, uint8_t* dst,
+                                   int dst_stride) {
  uint32_t alpha_mask = 0xffffffff;
  int i, j, temp0;

@@ -28,97 +28,92 @@ static int DispatchAlpha_MIPSdspR2(const uint8_t* alpha, int alpha_stride,
    for (i = 0; i < (width >> 2); ++i) {
      int temp1, temp2, temp3;

-      __asm__ volatile (
-        "ulw    %[temp0],      0(%[palpha])                \n\t"
-        "addiu  %[palpha],     %[palpha],     4            \n\t"
-        "addiu  %[pdst],       %[pdst],       16           \n\t"
-        "srl    %[temp1],      %[temp0],      8            \n\t"
-        "srl    %[temp2],      %[temp0],      16           \n\t"
-        "srl    %[temp3],      %[temp0],      24           \n\t"
-        "and    %[alpha_mask], %[alpha_mask], %[temp0]     \n\t"
-        "sb     %[temp0],      -16(%[pdst])                \n\t"
-        "sb     %[temp1],      -12(%[pdst])                \n\t"
-        "sb     %[temp2],      -8(%[pdst])                 \n\t"
-        "sb     %[temp3],      -4(%[pdst])                 \n\t"
-        : [temp0]"=&r"(temp0), [temp1]"=&r"(temp1), [temp2]"=&r"(temp2),
-          [temp3]"=&r"(temp3), [palpha]"+r"(palpha), [pdst]"+r"(pdst),
-          [alpha_mask]"+r"(alpha_mask)
-        :
-        : "memory"
-      );
+      __asm__ volatile(
+          "ulw    %[temp0],      0(%[palpha])                \n\t"
+          "addiu  %[palpha],     %[palpha],     4            \n\t"
+          "addiu  %[pdst],       %[pdst],       16           \n\t"
+          "srl    %[temp1],      %[temp0],      8            \n\t"
+          "srl    %[temp2],      %[temp0],      16           \n\t"
+          "srl    %[temp3],      %[temp0],      24           \n\t"
+          "and    %[alpha_mask], %[alpha_mask], %[temp0]     \n\t"
+          "sb     %[temp0],      -16(%[pdst])                \n\t"
+          "sb     %[temp1],      -12(%[pdst])                \n\t"
+          "sb     %[temp2],      -8(%[pdst])                 \n\t"
+          "sb     %[temp3],      -4(%[pdst])                 \n\t"
+          : [temp0] "=&r"(temp0), [temp1] "=&r"(temp1), [temp2] "=&r"(temp2),
+            [temp3] "=&r"(temp3), [palpha] "+r"(palpha), [pdst] "+r"(pdst),
+            [alpha_mask] "+r"(alpha_mask)
+          :
+          : "memory");
    }

    for (i = 0; i < (width & 3); ++i) {
-      __asm__ volatile (
-        "lbu    %[temp0],      0(%[palpha])                \n\t"
-        "addiu  %[palpha],     %[palpha],     1            \n\t"
-        "sb     %[temp0],      0(%[pdst])                  \n\t"
-        "and    %[alpha_mask], %[alpha_mask], %[temp0]     \n\t"
-        "addiu  %[pdst],       %[pdst],       4            \n\t"
-        : [temp0]"=&r"(temp0), [palpha]"+r"(palpha), [pdst]"+r"(pdst),
-          [alpha_mask]"+r"(alpha_mask)
-        :
-        : "memory"
-      );
+      __asm__ volatile(
+          "lbu    %[temp0],      0(%[palpha])                \n\t"
+          "addiu  %[palpha],     %[palpha],     1            \n\t"
+          "sb     %[temp0],      0(%[pdst])                  \n\t"
+          "and    %[alpha_mask], %[alpha_mask], %[temp0]     \n\t"
+          "addiu  %[pdst],       %[pdst],       4            \n\t"
+          : [temp0] "=&r"(temp0), [palpha] "+r"(palpha), [pdst] "+r"(pdst),
+            [alpha_mask] "+r"(alpha_mask)
+          :
+          : "memory");
    }
    alpha += alpha_stride;
    dst += dst_stride;
  }

-  __asm__ volatile (
-    "ext    %[temp0],      %[alpha_mask], 0, 16            \n\t"
-    "srl    %[alpha_mask], %[alpha_mask], 16               \n\t"
-    "and    %[alpha_mask], %[alpha_mask], %[temp0]         \n\t"
-    "ext    %[temp0],      %[alpha_mask], 0, 8             \n\t"
-    "srl    %[alpha_mask], %[alpha_mask], 8                \n\t"
-    "and    %[alpha_mask], %[alpha_mask], %[temp0]         \n\t"
-    : [temp0]"=&r"(temp0), [alpha_mask]"+r"(alpha_mask)
-    :
-  );
+  __asm__ volatile(
+      "ext    %[temp0],      %[alpha_mask], 0, 16            \n\t"
+      "srl    %[alpha_mask], %[alpha_mask], 16               \n\t"
+      "and    %[alpha_mask], %[alpha_mask], %[temp0]         \n\t"
+      "ext    %[temp0],      %[alpha_mask], 0, 8             \n\t"
+      "srl    %[alpha_mask], %[alpha_mask], 8                \n\t"
+      "and    %[alpha_mask], %[alpha_mask], %[temp0]         \n\t"
+      : [temp0] "=&r"(temp0), [alpha_mask] "+r"(alpha_mask)
+      :);

  return (alpha_mask != 0xff);
 }

-static void MultARGBRow_MIPSdspR2(uint32_t* const ptr, int width,
-                                  int inverse) {
+static void MultARGBRow_MIPSdspR2(uint32_t* const ptr, int width, int inverse) {
  int x;
  const uint32_t c_00ffffff = 0x00ffffffu;
  const uint32_t c_ff000000 = 0xff000000u;
-  const uint32_t c_8000000  = 0x00800000u;
-  const uint32_t c_8000080  = 0x00800080u;
+  const uint32_t c_8000000 = 0x00800000u;
+  const uint32_t c_8000080 = 0x00800080u;
  for (x = 0; x < width; ++x) {
    const uint32_t argb = ptr[x];
-    if (argb < 0xff000000u) {      // alpha < 255
-      if (argb <= 0x00ffffffu) {   // alpha == 0
+    if (argb < 0xff000000u) {     // alpha < 255
+      if (argb <= 0x00ffffffu) {  // alpha == 0
        ptr[x] = 0;
      } else {
        int temp0, temp1, temp2, temp3, alpha;
-        __asm__ volatile (
-          "srl          %[alpha],   %[argb],       24                \n\t"
-          "replv.qb     %[temp0],   %[alpha]                         \n\t"
-          "and          %[temp0],   %[temp0],      %[c_00ffffff]     \n\t"
-          "beqz         %[inverse], 0f                               \n\t"
-          "divu         $zero,      %[c_ff000000], %[alpha]          \n\t"
-          "mflo         %[temp0]                                     \n\t"
-        "0:                                                          \n\t"
-          "andi         %[temp1],   %[argb],       0xff              \n\t"
-          "ext          %[temp2],   %[argb],       8,             8  \n\t"
-          "ext          %[temp3],   %[argb],       16,            8  \n\t"
-          "mul          %[temp1],   %[temp1],      %[temp0]          \n\t"
-          "mul          %[temp2],   %[temp2],      %[temp0]          \n\t"
-          "mul          %[temp3],   %[temp3],      %[temp0]          \n\t"
-          "precrq.ph.w  %[temp1],   %[temp2],      %[temp1]          \n\t"
-          "addu         %[temp3],   %[temp3],      %[c_8000000]      \n\t"
-          "addu         %[temp1],   %[temp1],      %[c_8000080]      \n\t"
-          "precrq.ph.w  %[temp3],   %[argb],       %[temp3]          \n\t"
-          "precrq.qb.ph %[temp1],   %[temp3],      %[temp1]          \n\t"
-          : [temp0]"=&r"(temp0), [temp1]"=&r"(temp1), [temp2]"=&r"(temp2),
-            [temp3]"=&r"(temp3), [alpha]"=&r"(alpha)
-          : [inverse]"r"(inverse), [c_00ffffff]"r"(c_00ffffff),
-            [c_8000000]"r"(c_8000000), [c_8000080]"r"(c_8000080),
-            [c_ff000000]"r"(c_ff000000), [argb]"r"(argb)
-          : "memory", "hi", "lo"
-        );
+        __asm__ volatile(
+            "srl          %[alpha],   %[argb],       24                \n\t"
+            "replv.qb     %[temp0],   %[alpha]                         \n\t"
+            "and          %[temp0],   %[temp0],      %[c_00ffffff]     \n\t"
+            "beqz         %[inverse], 0f                               \n\t"
+            "divu         $zero,      %[c_ff000000], %[alpha]          \n\t"
+            "mflo         %[temp0]                                     \n\t"
+            "0:                                                          \n\t"
+            "andi         %[temp1],   %[argb],       0xff              \n\t"
+            "ext          %[temp2],   %[argb],       8,             8  \n\t"
+            "ext          %[temp3],   %[argb],       16,            8  \n\t"
+            "mul          %[temp1],   %[temp1],      %[temp0]          \n\t"
+            "mul          %[temp2],   %[temp2],      %[temp0]          \n\t"
+            "mul          %[temp3],   %[temp3],      %[temp0]          \n\t"
+            "precrq.ph.w  %[temp1],   %[temp2],      %[temp1]          \n\t"
+            "addu         %[temp3],   %[temp3],      %[c_8000000]      \n\t"
+            "addu         %[temp1],   %[temp1],      %[c_8000080]      \n\t"
+            "precrq.ph.w  %[temp3],   %[argb],       %[temp3]          \n\t"
+            "precrq.qb.ph %[temp1],   %[temp3],      %[temp1]          \n\t"
+            : [temp0] "=&r"(temp0), [temp1] "=&r"(temp1), [temp2] "=&r"(temp2),
+              [temp3] "=&r"(temp3), [alpha] "=&r"(alpha)
+            : [inverse] "r"(inverse), [c_00ffffff] "r"(c_00ffffff),
+              [c_8000000] "r"(c_8000000), [c_8000080] "r"(c_8000080),
+              [c_ff000000] "r"(c_ff000000), [argb] "r"(argb)
+            : "memory", "hi", "lo");
        ptr[x] = temp1;
      }
    }
@@ -133,38 +128,37 @@ static void PackARGB_MIPSdspR2(const uint8_t* a, const uint8_t* r,
  const int rest = len & 1;
  const uint32_t* const loop_end = out + len - rest;
  const int step = 4;
-  __asm__ volatile (
-    "xor          %[offset],   %[offset], %[offset]    \n\t"
-    "beq          %[loop_end], %[out],    0f           \n\t"
-  "2:                                                  \n\t"
-    "lbux         %[temp0],    %[offset](%[a])         \n\t"
-    "lbux         %[temp1],    %[offset](%[r])         \n\t"
-    "lbux         %[temp2],    %[offset](%[g])         \n\t"
-    "lbux         %[temp3],    %[offset](%[b])         \n\t"
-    "ins          %[temp1],    %[temp0],  16,     16   \n\t"
-    "ins          %[temp3],    %[temp2],  16,     16   \n\t"
-    "addiu        %[out],      %[out],    4            \n\t"
-    "precr.qb.ph  %[temp0],    %[temp1],  %[temp3]     \n\t"
-    "sw           %[temp0],    -4(%[out])              \n\t"
-    "addu         %[offset],   %[offset], %[step]      \n\t"
-    "bne          %[loop_end], %[out],    2b           \n\t"
-  "0:                                                  \n\t"
-    "beq          %[rest],     $zero,     1f           \n\t"
-    "lbux         %[temp0],    %[offset](%[a])         \n\t"
-    "lbux         %[temp1],    %[offset](%[r])         \n\t"
-    "lbux         %[temp2],    %[offset](%[g])         \n\t"
-    "lbux         %[temp3],    %[offset](%[b])         \n\t"
-    "ins          %[temp1],    %[temp0],  16,     16   \n\t"
-    "ins          %[temp3],    %[temp2],  16,     16   \n\t"
-    "precr.qb.ph  %[temp0],    %[temp1],  %[temp3]     \n\t"
-    "sw           %[temp0],    0(%[out])               \n\t"
-  "1:                                                  \n\t"
-    : [temp0]"=&r"(temp0), [temp1]"=&r"(temp1), [temp2]"=&r"(temp2),
-      [temp3]"=&r"(temp3), [offset]"=&r"(offset), [out]"+&r"(out)
-    : [a]"r"(a), [r]"r"(r), [g]"r"(g), [b]"r"(b), [step]"r"(step),
-      [loop_end]"r"(loop_end), [rest]"r"(rest)
-    : "memory"
-  );
+  __asm__ volatile(
+      "xor          %[offset],   %[offset], %[offset]    \n\t"
+      "beq          %[loop_end], %[out],    0f           \n\t"
+      "2:                                                  \n\t"
+      "lbux         %[temp0],    %[offset](%[a])         \n\t"
+      "lbux         %[temp1],    %[offset](%[r])         \n\t"
+      "lbux         %[temp2],    %[offset](%[g])         \n\t"
+      "lbux         %[temp3],    %[offset](%[b])         \n\t"
+      "ins          %[temp1],    %[temp0],  16,     16   \n\t"
+      "ins          %[temp3],    %[temp2],  16,     16   \n\t"
+      "addiu        %[out],      %[out],    4            \n\t"
+      "precr.qb.ph  %[temp0],    %[temp1],  %[temp3]     \n\t"
+      "sw           %[temp0],    -4(%[out])              \n\t"
+      "addu         %[offset],   %[offset], %[step]      \n\t"
+      "bne          %[loop_end], %[out],    2b           \n\t"
+      "0:                                                  \n\t"
+      "beq          %[rest],     $zero,     1f           \n\t"
+      "lbux         %[temp0],    %[offset](%[a])         \n\t"
+      "lbux         %[temp1],    %[offset](%[r])         \n\t"
+      "lbux         %[temp2],    %[offset](%[g])         \n\t"
+      "lbux         %[temp3],    %[offset](%[b])         \n\t"
+      "ins          %[temp1],    %[temp0],  16,     16   \n\t"
+      "ins          %[temp3],    %[temp2],  16,     16   \n\t"
+      "precr.qb.ph  %[temp0],    %[temp1],  %[temp3]     \n\t"
+      "sw           %[temp0],    0(%[out])               \n\t"
+      "1:                                                  \n\t"
+      : [temp0] "=&r"(temp0), [temp1] "=&r"(temp1), [temp2] "=&r"(temp2),
+        [temp3] "=&r"(temp3), [offset] "=&r"(offset), [out] "+&r"(out)
+      : [a] "r"(a), [r] "r"(r), [g] "r"(g), [b] "r"(b), [step] "r"(step),
+        [loop_end] "r"(loop_end), [rest] "r"(rest)
+      : "memory");
 }
 #endif  // WORDS_BIGENDIAN

@@ -175,36 +169,35 @@ static void PackRGB_MIPSdspR2(const uint8_t* r, const uint8_t* g,
  const int rest = len & 1;
  const int a = 0xff;
  const uint32_t* const loop_end = out + len - rest;
-  __asm__ volatile (
-    "xor          %[offset],   %[offset], %[offset]    \n\t"
-    "beq          %[loop_end], %[out],    0f           \n\t"
-  "2:                                                  \n\t"
-    "lbux         %[temp0],    %[offset](%[r])         \n\t"
-    "lbux         %[temp1],    %[offset](%[g])         \n\t"
-    "lbux         %[temp2],    %[offset](%[b])         \n\t"
-    "ins          %[temp0],    %[a],      16,     16   \n\t"
-    "ins          %[temp2],    %[temp1],  16,     16   \n\t"
-    "addiu        %[out],      %[out],    4            \n\t"
-    "precr.qb.ph  %[temp0],    %[temp0],  %[temp2]     \n\t"
-    "sw           %[temp0],    -4(%[out])              \n\t"
-    "addu         %[offset],   %[offset], %[step]      \n\t"
-    "bne          %[loop_end], %[out],    2b           \n\t"
-  "0:                                                  \n\t"
-    "beq          %[rest],     $zero,     1f           \n\t"
-    "lbux         %[temp0],    %[offset](%[r])         \n\t"
-    "lbux         %[temp1],    %[offset](%[g])         \n\t"
-    "lbux         %[temp2],    %[offset](%[b])         \n\t"
-    "ins          %[temp0],    %[a],      16,     16   \n\t"
-    "ins          %[temp2],    %[temp1],  16,     16   \n\t"
-    "precr.qb.ph  %[temp0],    %[temp0],  %[temp2]     \n\t"
-    "sw           %[temp0],    0(%[out])               \n\t"
-  "1:                                                  \n\t"
-    : [temp0]"=&r"(temp0), [temp1]"=&r"(temp1), [temp2]"=&r"(temp2),
-      [offset]"=&r"(offset), [out]"+&r"(out)
-    : [a]"r"(a), [r]"r"(r), [g]"r"(g), [b]"r"(b), [step]"r"(step),
-      [loop_end]"r"(loop_end), [rest]"r"(rest)
-    : "memory"
-  );
+  __asm__ volatile(
+      "xor          %[offset],   %[offset], %[offset]    \n\t"
+      "beq          %[loop_end], %[out],    0f           \n\t"
+      "2:                                                  \n\t"
+      "lbux         %[temp0],    %[offset](%[r])         \n\t"
+      "lbux         %[temp1],    %[offset](%[g])         \n\t"
+      "lbux         %[temp2],    %[offset](%[b])         \n\t"
+      "ins          %[temp0],    %[a],      16,     16   \n\t"
+      "ins          %[temp2],    %[temp1],  16,     16   \n\t"
+      "addiu        %[out],      %[out],    4            \n\t"
+      "precr.qb.ph  %[temp0],    %[temp0],  %[temp2]     \n\t"
+      "sw           %[temp0],    -4(%[out])              \n\t"
+      "addu         %[offset],   %[offset], %[step]      \n\t"
+      "bne          %[loop_end], %[out],    2b           \n\t"
+      "0:                                                  \n\t"
+      "beq          %[rest],     $zero,     1f           \n\t"
+      "lbux         %[temp0],    %[offset](%[r])         \n\t"
+      "lbux         %[temp1],    %[offset](%[g])         \n\t"
+      "lbux         %[temp2],    %[offset](%[b])         \n\t"
+      "ins          %[temp0],    %[a],      16,     16   \n\t"
+      "ins          %[temp2],    %[temp1],  16,     16   \n\t"
+      "precr.qb.ph  %[temp0],    %[temp0],  %[temp2]     \n\t"
+      "sw           %[temp0],    0(%[out])               \n\t"
+      "1:                                                  \n\t"
+      : [temp0] "=&r"(temp0), [temp1] "=&r"(temp1), [temp2] "=&r"(temp2),
+        [offset] "=&r"(offset), [out] "+&r"(out)
+      : [a] "r"(a), [r] "r"(r), [g] "r"(g), [b] "r"(b), [step] "r"(step),
+        [loop_end] "r"(loop_end), [rest] "r"(rest)
+      : "memory");
 }

 //------------------------------------------------------------------------------
--- a/Show More
+++ b/Show More