README.wasm: add instructions for enabling mulhi

Change-Id: I1e9dd737f06ad76f73824352291a6e129ca5ded1

.mailmap

@@ -1,8 +1,7 @@
-Johann Koenig <johann.koenig@duck.com>
-Johann Koenig <johann.koenig@duck.com> <johannkoenig@google.com>
+<johann.koenig@duck.com> <johannkoenig@google.com>
 Mikołaj Zalewski <mikolajz@google.com>
 Pascal Massimino <pascal.massimino@gmail.com>
-Pascal Massimino <pascal.massimino@gmail.com> <skal@google.com>
+<pascal.massimino@gmail.com> <skal@google.com>
 Vikas Arora <vikasa@google.com>
 <vikasa@google.com> <vikasa@gmail.com>
 <vikasa@google.com> <vikaas.arora@gmail.com>

AUTHORS

@@ -1,6 +1,4 @@
 Contributors:
-- Aidan O'Loan (aidanol at gmail dot com)
-- Alan Browning (browning at google dot com)
 - Charles Munger (clm at google dot com)
 - Christian Duvivier (cduvivier at google dot com)
 - Djordje Pesut (djordje dot pesut at imgtec dot com)
@@ -8,10 +6,9 @@ Contributors:
 - James Zern (jzern at google dot com)
 - Jan Engelhardt (jengelh at medozas dot de)
 - Jehan (jehan at girinstud dot io)
-- Johann Koenig (johann dot koenig at duck dot com)
+- Johann (johann dot koenig at duck dot com)
 - Jovan Zelincevic (jovan dot zelincevic at imgtec dot com)
 - Jyrki Alakuijala (jyrki at google dot com)
-- Konstantin Ivlev (tomskside at gmail dot com)
 - Lode Vandevenne (lode at google dot com)
 - Lou Quillio (louquillio at google dot com)
 - Mans Rullgard (mans at mansr dot com)
@@ -38,6 +35,4 @@ Contributors:
 - Urvang Joshi (urvang at google dot com)
 - Vikas Arora (vikasa at google dot com)
 - Vincent Rabaud (vrabaud at google dot com)
-- Vlad Tsyrklevich (vtsyrklevich at chromium dot org)
 - Yang Zhang (yang dot zhang at arm dot com)
-- Yannis Guyon (yguyon at google dot com)

Android.mk

@@ -55,6 +55,9 @@ dsp_dec_srcs := \
     src/dsp/alpha_processing_neon.$(NEON) \
     src/dsp/alpha_processing_sse2.c \
     src/dsp/alpha_processing_sse41.c \
+    src/dsp/argb.c \
+    src/dsp/argb_mips_dsp_r2.c \
+    src/dsp/argb_sse2.c \
     src/dsp/cpu.c \
     src/dsp/dec.c \
     src/dsp/dec_clip_tables.c \
@@ -85,21 +88,19 @@ dsp_dec_srcs := \
     src/dsp/upsampling_msa.c \
     src/dsp/upsampling_neon.$(NEON) \
     src/dsp/upsampling_sse2.c \
-    src/dsp/upsampling_sse41.c \
     src/dsp/yuv.c \
     src/dsp/yuv_mips32.c \
     src/dsp/yuv_mips_dsp_r2.c \
     src/dsp/yuv_neon.$(NEON) \
     src/dsp/yuv_sse2.c \
-    src/dsp/yuv_sse41.c \
 
 dsp_enc_srcs := \
     src/dsp/cost.c \
     src/dsp/cost_mips32.c \
     src/dsp/cost_mips_dsp_r2.c \
-    src/dsp/cost_neon.$(NEON) \
     src/dsp/cost_sse2.c \
     src/dsp/enc.c \
+    src/dsp/enc_avx2.c \
     src/dsp/enc_mips32.c \
     src/dsp/enc_mips_dsp_r2.c \
     src/dsp/enc_msa.c \
@@ -123,6 +124,7 @@ enc_srcs := \
     src/enc/backward_references_enc.c \
     src/enc/config_enc.c \
     src/enc/cost_enc.c \
+    src/enc/delta_palettization_enc.c \
     src/enc/filter_enc.c \
     src/enc/frame_enc.c \
     src/enc/histogram_enc.c \
@@ -174,7 +176,7 @@ LOCAL_SRC_FILES := \
     $(utils_dec_srcs) \
 
 LOCAL_CFLAGS := $(WEBP_CFLAGS)
-LOCAL_EXPORT_C_INCLUDES += $(LOCAL_PATH)/src
+LOCAL_C_INCLUDES += $(LOCAL_PATH)/src
 
 # prefer arm over thumb mode for performance gains
 LOCAL_ARM_MODE := arm
@@ -208,7 +210,7 @@ LOCAL_SRC_FILES := \
     $(utils_enc_srcs) \
 
 LOCAL_CFLAGS := $(WEBP_CFLAGS)
-LOCAL_EXPORT_C_INCLUDES += $(LOCAL_PATH)/src
+LOCAL_C_INCLUDES += $(LOCAL_PATH)/src
 
 # prefer arm over thumb mode for performance gains
 LOCAL_ARM_MODE := arm
@@ -231,7 +233,7 @@ include $(CLEAR_VARS)
 LOCAL_SRC_FILES := $(demux_srcs)
 
 LOCAL_CFLAGS := $(WEBP_CFLAGS)
-LOCAL_EXPORT_C_INCLUDES += $(LOCAL_PATH)/src
+LOCAL_C_INCLUDES += $(LOCAL_PATH)/src
 
 # prefer arm over thumb mode for performance gains
 LOCAL_ARM_MODE := arm
@@ -254,7 +256,7 @@ include $(CLEAR_VARS)
 LOCAL_SRC_FILES := $(mux_srcs)
 
 LOCAL_CFLAGS := $(WEBP_CFLAGS)
-LOCAL_EXPORT_C_INCLUDES += $(LOCAL_PATH)/src
+LOCAL_C_INCLUDES += $(LOCAL_PATH)/src
 
 # prefer arm over thumb mode for performance gains
 LOCAL_ARM_MODE := arm

CMakeLists.txt

@@ -1,136 +1,83 @@
-cmake_minimum_required(VERSION 3.5)
+cmake_minimum_required(VERSION 2.8.7)
 
-project(WebP C)
+project(libwebp C)
 
 # Options for coder / decoder executables.
 option(WEBP_ENABLE_SIMD "Enable any SIMD optimization." ON)
-option(WEBP_BUILD_ANIM_UTILS "Build animation utilities." ON)
-option(WEBP_BUILD_CWEBP "Build the cwebp command line tool." ON)
-option(WEBP_BUILD_DWEBP "Build the dwebp command line tool." ON)
-option(WEBP_BUILD_GIF2WEBP "Build the gif2webp conversion tool." ON)
-option(WEBP_BUILD_IMG2WEBP "Build the img2webp animation tool." ON)
-option(WEBP_BUILD_VWEBP "Build the vwebp viewer tool." ON)
-option(WEBP_BUILD_WEBPINFO "Build the webpinfo command line tool." ON)
-option(WEBP_BUILD_WEBPMUX "Build the webpmux command line tool." ON)
-option(WEBP_BUILD_EXTRAS "Build extras." ON)
+option(WEBP_ENABLE_WASM "Enable WebAssembly optimizations." OFF)
+option(WEBP_BUILD_CWEBP "Build the cwebp command line tool." OFF)
+option(WEBP_BUILD_DWEBP "Build the dwebp command line tool." OFF)
+option(WEBP_BUILD_GIF2WEBP "Build the gif2webp conversion tool." OFF)
+option(WEBP_BUILD_IMG2WEBP "Build the img2webp animation tool." OFF)
+option(WEBP_BUILD_WEBPINFO "Build the webpinfo command line tool." OFF)
 option(WEBP_BUILD_WEBP_JS "Emscripten build of webp.js." OFF)
-option(WEBP_NEAR_LOSSLESS "Enable near-lossless encoding" ON)
-option(WEBP_ENABLE_SWAP_16BIT_CSP "Enable byte swap for 16 bit colorspaces."
-       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_EXPERIMENTAL_FEATURES "Build with experimental features." OFF)
+option(WEBP_ENABLE_SWAP_16BIT_CSP "Enable byte swap for 16 bit colorspaces." OFF)
 
-# Option needed for handling Unicode file names on Windows.
-if(WIN32)
-  option(WEBP_UNICODE "Build Unicode executables." ON)
-endif()
-
-if(WEBP_BUILD_WEBP_JS)
+if(WEBP_BUILD_WEBP_JS OR WEBP_ENABLE_WASM)
   set(WEBP_ENABLE_SIMD OFF)
-  set(WEBP_BUILD_ANIM_UTILS OFF)
-  set(WEBP_BUILD_CWEBP OFF)
-  set(WEBP_BUILD_DWEBP OFF)
-  set(WEBP_BUILD_GIF2WEBP OFF)
-  set(WEBP_BUILD_IMG2WEBP OFF)
-  set(WEBP_BUILD_VWEBP OFF)
-  set(WEBP_BUILD_WEBPINFO OFF)
-  set(WEBP_BUILD_WEBPMUX OFF)
-  set(WEBP_BUILD_EXTRAS OFF)
 endif()
 
 set(WEBP_DEP_LIBRARIES)
 set(WEBP_DEP_INCLUDE_DIRS)
 
 if(NOT CMAKE_BUILD_TYPE)
-  set(CMAKE_BUILD_TYPE "Release"
-      CACHE "Build type: Release, Debug, MinSizeRel or RelWithDebInfo" STRING
-      FORCE)
+  set(CMAKE_BUILD_TYPE "Release" CACHE
+    "Build type: Release, Debug or RelWithDebInfo" STRING FORCE
+  )
 endif()
 
-# Include dependencies.
-include(cmake/deps.cmake)
-include(GNUInstallDirs)
+include(cmake/config.h.cmake)
 
-# ##############################################################################
+# Extract the version of the library.
+file(READ ${CMAKE_CURRENT_SOURCE_DIR}/configure.ac SOURCE_FILE)
+string(REGEX MATCH "[0-9.]+" WEBP_VERSION ${SOURCE_FILE})
+
+################################################################################
 # Options.
 if(WEBP_ENABLE_SWAP_16BIT_CSP)
-  add_definitions(-DWEBP_SWAP_16BIT_CSP=1)
+  add_definitions(-DWEBP_SWAP_16BIT_CSP)
+endif()
+if(WEBP_ENABLE_WASM)
+  add_definitions(-DWEBP_USE_WASM)
 endif()
 
-if(NOT WEBP_BITTRACE STREQUAL "0")
-  add_definitions(-DBITTRACE=${WEBP_BITTRACE})
-endif()
-
-if(WEBP_UNICODE)
-  # Windows recommends setting both UNICODE and _UNICODE.
-  add_definitions(-DUNICODE -D_UNICODE)
-endif()
-
-set(prefix ${CMAKE_INSTALL_PREFIX})
-set(exec_prefix "\$\{prefix\}")
-set(libdir "\$\{prefix\}/lib")
-set(includedir "\$\{prefix\}/include")
-set(PTHREAD_LIBS ${CMAKE_THREAD_LIBS_INIT})
-set(INSTALLED_LIBRARIES)
-
-# ##############################################################################
+################################################################################
 # Android only.
 if(ANDROID)
   include_directories(${ANDROID_NDK}/sources/android/cpufeatures)
   add_library(cpufeatures STATIC
-              ${ANDROID_NDK}/sources/android/cpufeatures/cpu-features.c)
-  list(APPEND INSTALLED_LIBRARIES cpufeatures)
+    ${ANDROID_NDK}/sources/android/cpufeatures/cpu-features.c
+  )
   target_link_libraries(cpufeatures dl)
   set(WEBP_DEP_LIBRARIES ${WEBP_DEP_LIBRARIES} cpufeatures)
   set(WEBP_DEP_INCLUDE_DIRS ${WEBP_DEP_INCLUDE_DIRS}
-      ${ANDROID_NDK}/sources/android/cpufeatures)
-  add_definitions(-DHAVE_CPU_FEATURES_H=1)
-  set(HAVE_CPU_FEATURES_H 1)
-else()
-  set(HAVE_CPU_FEATURES_H 0)
+    ${ANDROID_NDK}/sources/android/cpufeatures
+  )
+  add_definitions(-DHAVE_CPU_FEATURES_H)
 endif()
 
-function(configure_pkg_config FILE)
-  configure_file("${CMAKE_CURRENT_SOURCE_DIR}/${FILE}.in"
-                 "${CMAKE_CURRENT_BINARY_DIR}/${FILE}")
+################################################################################
+# WebP source files.
+# Read the Makefile.am to get the source files.
 
-  if(HAVE_MATH_LIBRARY)
-    # MSVC doesn't have libm
-    file(READ ${CMAKE_CURRENT_BINARY_DIR}/${FILE} data)
-    string(REPLACE "-lm" "" data ${data})
-    file(WRITE ${CMAKE_CURRENT_BINARY_DIR}/${FILE} ${data})
-  endif()
-
-  install(
-    FILES "${CMAKE_CURRENT_BINARY_DIR}/${FILE}"
-    DESTINATION ${CMAKE_INSTALL_LIBDIR}/pkgconfig
-  )
-endfunction()
-
-# ##############################################################################
-# WebP source files. Read the Makefile.am to get the source files.
-
-# We expect the Makefiles to define the sources as defined in the first regex.
-# E.g.: libimagedec_la_SOURCES  = image_dec.c image_dec.h
+# We expect the Makefiles to define the sources as defined in
+# the first regex. E.g.:
+# libimagedec_la_SOURCES  = image_dec.c image_dec.h
 function(parse_Makefile_am FOLDER VAR SRC_REGEX)
   file(READ ${FOLDER}/Makefile.am MAKEFILE_AM)
-  string(REGEX MATCHALL
-               "${SRC_REGEX}_SOURCES[ ]*\\+?=[ ]+[0-9a-z\\._ ]*"
-               FILES_PER_LINE
-               ${MAKEFILE_AM})
+  string(REGEX MATCHALL "${SRC_REGEX}_SOURCES[ ]*\\+?=[ ]+[0-9a-z\\._ ]*"
+    FILES_PER_LINE ${MAKEFILE_AM}
+  )
   set(SRCS ${${VAR}})
   foreach(FILES ${FILES_PER_LINE})
     string(FIND ${FILES} "=" OFFSET)
     math(EXPR OFFSET "${OFFSET} + 2")
-    string(SUBSTRING ${FILES}
-                     ${OFFSET}
-                     -1
-                     FILES)
+    string(SUBSTRING ${FILES} ${OFFSET} -1 FILES)
     if(FILES)
-      string(REGEX MATCHALL
-                   "[0-9a-z\\._]+"
-                   FILES
-                   ${FILES})
+      string(REGEX MATCHALL "[0-9a-z\\._]+"
+        FILES ${FILES}
+      )
       foreach(FILE ${FILES})
         list(APPEND SRCS ${FOLDER}/${FILE})
       endforeach()
@@ -140,16 +87,16 @@ function(parse_Makefile_am FOLDER VAR SRC_REGEX)
 endfunction()
 
 set(WEBP_SRC_DIR ${CMAKE_CURRENT_SOURCE_DIR}/src)
-parse_makefile_am(${WEBP_SRC_DIR}/dec "WEBP_DEC_SRCS" "")
-parse_makefile_am(${WEBP_SRC_DIR}/demux "WEBP_DEMUX_SRCS" "")
-parse_makefile_am(${WEBP_SRC_DIR}/dsp "WEBP_DSP_COMMON_SRCS" "COMMON")
-parse_makefile_am(${WEBP_SRC_DIR}/dsp "WEBP_DSP_ENC_SRCS" "ENC")
-parse_makefile_am(${WEBP_SRC_DIR}/dsp "WEBP_DSP_ENC_SRCS" "dsp_[^ ]*")
-parse_makefile_am(${WEBP_SRC_DIR}/dsp "WEBP_DSP_DEC_SRCS" "decode_[^ ]*")
-parse_makefile_am(${WEBP_SRC_DIR}/enc "WEBP_ENC_SRCS" "")
-parse_makefile_am(${WEBP_SRC_DIR}/utils "WEBP_UTILS_COMMON_SRCS" "COMMON")
-parse_makefile_am(${WEBP_SRC_DIR}/utils "WEBP_UTILS_ENC_SRCS" "ENC")
-parse_makefile_am(${WEBP_SRC_DIR}/utils "WEBP_UTILS_DEC_SRCS" "decode_[^ ]*")
+parse_Makefile_am(${WEBP_SRC_DIR}/dec "WEBP_DEC_SRCS" "")
+parse_Makefile_am(${WEBP_SRC_DIR}/demux "WEBP_DEMUX_SRCS" "")
+parse_Makefile_am(${WEBP_SRC_DIR}/dsp "WEBP_DSP_COMMON_SRCS" "COMMON")
+parse_Makefile_am(${WEBP_SRC_DIR}/dsp "WEBP_DSP_ENC_SRCS" "ENC")
+parse_Makefile_am(${WEBP_SRC_DIR}/dsp "WEBP_DSP_ENC_SRCS" "dsp_[^ ]*")
+parse_Makefile_am(${WEBP_SRC_DIR}/dsp "WEBP_DSP_DEC_SRCS" "decode_[^ ]*")
+parse_Makefile_am(${WEBP_SRC_DIR}/enc "WEBP_ENC_SRCS" "")
+parse_Makefile_am(${WEBP_SRC_DIR}/utils "WEBP_UTILS_COMMON_SRCS" "COMMON")
+parse_Makefile_am(${WEBP_SRC_DIR}/utils "WEBP_UTILS_ENC_SRCS" "ENC")
+parse_Makefile_am(${WEBP_SRC_DIR}/utils "WEBP_UTILS_DEC_SRCS" "decode_[^ ]*")
 
 # Remove the files specific to SIMD we don't use.
 foreach(FILE ${WEBP_SIMD_FILES_NOT_TO_INCLUDE})
@@ -157,507 +104,229 @@ foreach(FILE ${WEBP_SIMD_FILES_NOT_TO_INCLUDE})
   list(REMOVE_ITEM WEBP_DSP_DEC_SRCS ${FILE})
 endforeach()
 
-# Generate the config.h file.
-configure_file(${CMAKE_CURRENT_LIST_DIR}/cmake/config.h.in
-               ${CMAKE_CURRENT_BINARY_DIR}/src/webp/config.h)
-add_definitions(-DHAVE_CONFIG_H)
-
-# ##############################################################################
+### Define the mandatory libraries.
 # Build the webpdecoder library.
-if(MSVC)
-  # avoid security warnings for e.g., fopen() used in the examples.
-  add_definitions(-D_CRT_SECURE_NO_WARNINGS)
-else()
-  add_definitions(-Wall)
-endif()
-include_directories(${WEBP_DEP_INCLUDE_DIRS})
+add_definitions(-Wall)
+include_directories(${CMAKE_CURRENT_SOURCE_DIR}/src/ ${WEBP_DEP_INCLUDE_DIRS})
 add_library(webpdecode OBJECT ${WEBP_DEC_SRCS})
-target_include_directories(webpdecode
-                           PRIVATE ${CMAKE_CURRENT_BINARY_DIR}
-                                   ${CMAKE_CURRENT_SOURCE_DIR})
 add_library(webpdspdecode OBJECT ${WEBP_DSP_COMMON_SRCS} ${WEBP_DSP_DEC_SRCS})
-target_include_directories(webpdspdecode
-                           PRIVATE ${CMAKE_CURRENT_BINARY_DIR}
-                                   ${CMAKE_CURRENT_SOURCE_DIR})
-add_library(webputilsdecode
-            OBJECT
-            ${WEBP_UTILS_COMMON_SRCS}
-            ${WEBP_UTILS_DEC_SRCS})
-target_include_directories(webputilsdecode
-                           PRIVATE ${CMAKE_CURRENT_BINARY_DIR}
-                                   ${CMAKE_CURRENT_SOURCE_DIR})
-add_library(webpdecoder
-            $<TARGET_OBJECTS:webpdecode>
-            $<TARGET_OBJECTS:webpdspdecode>
-            $<TARGET_OBJECTS:webputilsdecode>)
+add_library(webputilsdecode OBJECT ${WEBP_UTILS_COMMON_SRCS}
+  ${WEBP_UTILS_DEC_SRCS})
+add_library(webpdecoder $<TARGET_OBJECTS:webpdecode>
+  $<TARGET_OBJECTS:webpdspdecode> $<TARGET_OBJECTS:webputilsdecode>)
 target_link_libraries(webpdecoder ${WEBP_DEP_LIBRARIES})
-target_include_directories(
-  webpdecoder
-  PRIVATE ${CMAKE_CURRENT_BINARY_DIR} ${CMAKE_CURRENT_SOURCE_DIR}
-  INTERFACE $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}>
-            $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>)
-set_target_properties(
-  webpdecoder
-  PROPERTIES PUBLIC_HEADER "${CMAKE_CURRENT_SOURCE_DIR}/src/webp/decode.h;\
-${CMAKE_CURRENT_SOURCE_DIR}/src/webp/types.h")
-
-configure_pkg_config("src/libwebpdecoder.pc")
 
 # Build the webp library.
 add_library(webpencode OBJECT ${WEBP_ENC_SRCS})
-target_include_directories(webpencode
-                           PRIVATE ${CMAKE_CURRENT_BINARY_DIR}
-                                   ${CMAKE_CURRENT_SOURCE_DIR})
-add_library(webpdsp
-            OBJECT
-            ${WEBP_DSP_COMMON_SRCS}
-            ${WEBP_DSP_DEC_SRCS}
-            ${WEBP_DSP_ENC_SRCS})
-target_include_directories(webpdsp
-                           PRIVATE ${CMAKE_CURRENT_BINARY_DIR}
-                                   ${CMAKE_CURRENT_SOURCE_DIR})
-add_library(webputils
-            OBJECT
-            ${WEBP_UTILS_COMMON_SRCS}
-            ${WEBP_UTILS_DEC_SRCS}
-            ${WEBP_UTILS_ENC_SRCS})
-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>)
+add_library(webpdsp OBJECT ${WEBP_DSP_COMMON_SRCS} ${WEBP_DSP_DEC_SRCS}
+  ${WEBP_DSP_ENC_SRCS})
+add_library(webputils OBJECT ${WEBP_UTILS_COMMON_SRCS} ${WEBP_UTILS_DEC_SRCS}
+  ${WEBP_UTILS_ENC_SRCS})
+add_library(webp $<TARGET_OBJECTS:webpdecode> $<TARGET_OBJECTS:webpdsp>
+  $<TARGET_OBJECTS:webpencode> $<TARGET_OBJECTS:webputils>)
 target_link_libraries(webp ${WEBP_DEP_LIBRARIES})
-target_include_directories(webp
-                           PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
-                                   ${CMAKE_CURRENT_BINARY_DIR}
-                           PUBLIC $<INSTALL_INTERFACE:include>)
-set_target_properties(
-  webp
-  PROPERTIES PUBLIC_HEADER "${CMAKE_CURRENT_SOURCE_DIR}/src/webp/decode.h;\
-${CMAKE_CURRENT_SOURCE_DIR}/src/webp/encode.h;\
-${CMAKE_CURRENT_SOURCE_DIR}/src/webp/types.h")
 
-# Make sure the OBJECT libraries are built with position independent code (it is
-# not ON by default).
-set_target_properties(webpdecode
-                      webpdspdecode
-                      webputilsdecode
-                      webpencode
-                      webpdsp
-                      webputils
-                      PROPERTIES POSITION_INDEPENDENT_CODE ON)
-configure_pkg_config("src/libwebp.pc")
+# Make sure the OBJECT libraries are built with position independent code
+# (it is not ON by default).
+set_target_properties(webpdecode webpdspdecode webputilsdecode
+  webpencode webpdsp webputils PROPERTIES POSITION_INDEPENDENT_CODE ON)
 
 # Build the webp demux library.
 add_library(webpdemux ${WEBP_DEMUX_SRCS})
 target_link_libraries(webpdemux webp)
-target_include_directories(webpdemux
-                           PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
-                                   ${CMAKE_CURRENT_BINARY_DIR}
-                           PUBLIC $<INSTALL_INTERFACE:include>)
-set_target_properties(
-  webpdemux
-  PROPERTIES PUBLIC_HEADER "${CMAKE_CURRENT_SOURCE_DIR}/src/webp/decode.h;\
-${CMAKE_CURRENT_SOURCE_DIR}/src/webp/demux.h;\
-${CMAKE_CURRENT_SOURCE_DIR}/src/webp/mux_types.h;\
-${CMAKE_CURRENT_SOURCE_DIR}/src/webp/types.h")
-
-configure_pkg_config("src/demux/libwebpdemux.pc")
 
 # Set the version numbers.
 function(parse_version FILE NAME VAR)
   file(READ ${CMAKE_CURRENT_SOURCE_DIR}/src/${FILE} SOURCE_FILE)
-  string(REGEX MATCH
-               "${NAME}_la_LDFLAGS[^\n]* -version-info [0-9:]+"
-               TMP
-               ${SOURCE_FILE})
-  string(REGEX MATCH
-               "[0-9:]+"
-               TMP
-               ${TMP})
-  string(REGEX
-         REPLACE ":"
-                 "."
-                 VERSION
-                 ${TMP})
+  string(REGEX MATCH "${NAME}_la_LDFLAGS[^\n]* -version-info [0-9:]+" TMP
+    ${SOURCE_FILE})
+  string(REGEX MATCH "[0-9:]+" TMP ${TMP})
+  string(REGEX REPLACE ":" "." VERSION ${TMP})
   set(${VAR} "${VERSION}" PARENT_SCOPE)
 endfunction()
 parse_version(Makefile.am webp WEBP_WEBP_SOVERSION)
-set_target_properties(webp
-                      PROPERTIES VERSION
-                                 ${PACKAGE_VERSION}
-                                 SOVERSION
-                                 ${WEBP_WEBP_SOVERSION})
+set_target_properties(webp PROPERTIES VERSION ${WEBP_VERSION}
+  SOVERSION ${WEBP_WEBP_SOVERSION})
 parse_version(Makefile.am webpdecoder WEBP_DECODER_SOVERSION)
-set_target_properties(webpdecoder
-                      PROPERTIES VERSION
-                                 ${PACKAGE_VERSION}
-                                 SOVERSION
-                                 ${WEBP_DECODER_SOVERSION})
+set_target_properties(webpdecoder PROPERTIES VERSION ${WEBP_VERSION}
+  SOVERSION ${WEBP_DECODER_SOVERSION})
 parse_version(demux/Makefile.am webpdemux WEBP_DEMUX_SOVERSION)
-set_target_properties(webpdemux
-                      PROPERTIES VERSION
-                                 ${PACKAGE_VERSION}
-                                 SOVERSION
-                                 ${WEBP_DEMUX_SOVERSION})
-file(READ ${CMAKE_CURRENT_SOURCE_DIR}/configure.ac CONFIGURE_FILE)
-string(REGEX MATCH
-             "AC_INIT\\([^\n]*\\[[0-9\\.]+\\]"
-             TMP
-             ${CONFIGURE_FILE})
-string(REGEX MATCH
-             "[0-9\\.]+"
-             PROJECT_VERSION
-             ${TMP})
+set_target_properties(webpdemux PROPERTIES VERSION ${WEBP_VERSION}
+  SOVERSION ${WEBP_DEMUX_SOVERSION})
 
 # Define the libraries to install.
-list(APPEND INSTALLED_LIBRARIES webpdecoder webp webpdemux)
+set(INSTALLED_LIBRARIES webpdecoder webp webpdemux)
 
-# Deal with SIMD. Change the compile flags for SIMD files we use.
+### Deal with SIMD.
+# Change the compile flags for SIMD files we use.
 list(LENGTH WEBP_SIMD_FILES_TO_INCLUDE WEBP_SIMD_FILES_TO_INCLUDE_LENGTH)
 math(EXPR WEBP_SIMD_FILES_TO_INCLUDE_RANGE
-     "${WEBP_SIMD_FILES_TO_INCLUDE_LENGTH}-1")
+  "${WEBP_SIMD_FILES_TO_INCLUDE_LENGTH}-1"
+)
 
 foreach(I_FILE RANGE ${WEBP_SIMD_FILES_TO_INCLUDE_RANGE})
   list(GET WEBP_SIMD_FILES_TO_INCLUDE ${I_FILE} FILE)
   list(GET WEBP_SIMD_FLAGS_TO_INCLUDE ${I_FILE} SIMD_COMPILE_FLAG)
-  set_source_files_properties(${FILE}
-                              PROPERTIES
-                              COMPILE_FLAGS
-                              ${SIMD_COMPILE_FLAG})
+  if(NOT ${SIMD_COMPILE_FLAG} STREQUAL "NOTFOUND")
+    set_source_files_properties(${FILE} PROPERTIES
+      COMPILE_FLAGS ${SIMD_COMPILE_FLAG}
+    )
+  endif()
 endforeach()
 
-if(WEBP_BUILD_GIF2WEBP AND NOT GIF_FOUND)
-  set(WEBP_BUILD_GIF2WEBP OFF)
-endif()
-
-if(WEBP_BUILD_ANIM_UTILS AND NOT GIF_FOUND)
-  set(WEBP_BUILD_ANIM_UTILS OFF)
-endif()
-
 # Build the executables if asked for.
-if(WEBP_BUILD_ANIM_UTILS
-   OR WEBP_BUILD_CWEBP
-   OR WEBP_BUILD_DWEBP
-   OR WEBP_BUILD_GIF2WEBP
-   OR WEBP_BUILD_IMG2WEBP
-   OR WEBP_BUILD_VWEBP)
+if(WEBP_BUILD_CWEBP OR WEBP_BUILD_DWEBP OR
+   WEBP_BUILD_GIF2WEBP OR WEBP_BUILD_IMG2WEBP OR WEBP_BUILD_WEBP_JS)
   # Example utility library.
-  parse_makefile_am(${CMAKE_CURRENT_SOURCE_DIR}/examples "EXAMPLEUTIL_SRCS"
-                    "example_util_[^ ]*")
-  list(APPEND EXAMPLEUTIL_SRCS ${CMAKE_CURRENT_SOURCE_DIR}/examples/stopwatch.h)
+  parse_Makefile_am(${CMAKE_CURRENT_SOURCE_DIR}/examples "EXAMPLEUTIL_SRCS"
+    "example_util_[^ ]*")
+  list(APPEND EXAMPLEUTIL_SRCS
+    ${CMAKE_CURRENT_SOURCE_DIR}/examples/stopwatch.h)
   add_library(exampleutil ${EXAMPLEUTIL_SRCS})
-  target_include_directories(
-    exampleutil
-    PUBLIC $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/src>)
 
-  parse_makefile_am(${CMAKE_CURRENT_SOURCE_DIR}/imageio "IMAGEIOUTILS_SRCS"
-                    "imageio_util_[^ ]*")
+  parse_Makefile_am(${CMAKE_CURRENT_SOURCE_DIR}/imageio "IMAGEIOUTILS_SRCS"
+    "imageio_util_[^ ]*")
   add_library(imageioutil ${IMAGEIOUTILS_SRCS})
   target_link_libraries(imageioutil webp)
 
   # Image-decoding utility library.
-  parse_makefile_am(${CMAKE_CURRENT_SOURCE_DIR}/imageio "IMAGEDEC_SRCS"
-                    "imagedec_[^ ]*")
+  parse_Makefile_am(${CMAKE_CURRENT_SOURCE_DIR}/imageio "IMAGEDEC_SRCS"
+    "imagedec_[^ ]*")
   add_library(imagedec ${IMAGEDEC_SRCS})
-  target_link_libraries(imagedec
-                        imageioutil
-                        webpdemux
-                        webp
-                        ${WEBP_DEP_IMG_LIBRARIES})
+  target_link_libraries(imagedec imageioutil webp ${WEBP_DEP_IMG_LIBRARIES})
 
   # Image-encoding utility library.
-  parse_makefile_am(${CMAKE_CURRENT_SOURCE_DIR}/imageio "IMAGEENC_SRCS"
-                    "imageenc_[^ ]*")
+  parse_Makefile_am(${CMAKE_CURRENT_SOURCE_DIR}/imageio "IMAGEENC_SRCS"
+    "imageenc_[^ ]*")
   add_library(imageenc ${IMAGEENC_SRCS})
   target_link_libraries(imageenc webp)
-
-  set_property(TARGET exampleutil
-                      imageioutil
-                      imagedec
-                      imageenc
-               PROPERTY INCLUDE_DIRECTORIES ${CMAKE_CURRENT_SOURCE_DIR}/src
-                        ${CMAKE_CURRENT_BINARY_DIR}/src)
 endif()
 
 if(WEBP_BUILD_DWEBP)
   # dwebp
-  parse_makefile_am(${CMAKE_CURRENT_SOURCE_DIR}/examples "DWEBP_SRCS" "dwebp")
+  include_directories(${WEBP_DEP_IMG_INCLUDE_DIRS})
+  parse_Makefile_am(${CMAKE_CURRENT_SOURCE_DIR}/examples "DWEBP_SRCS"
+    "dwebp")
   add_executable(dwebp ${DWEBP_SRCS})
-  target_link_libraries(dwebp exampleutil imagedec imageenc)
-  target_include_directories(dwebp PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/src)
-  install(TARGETS dwebp RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})
+  target_link_libraries(dwebp exampleutil imagedec imageenc webpdecoder)
+  install(TARGETS dwebp RUNTIME DESTINATION bin)
 endif()
 
 if(WEBP_BUILD_CWEBP)
   # cwebp
-  parse_makefile_am(${CMAKE_CURRENT_SOURCE_DIR}/examples "CWEBP_SRCS" "cwebp")
+  include_directories(${WEBP_DEP_IMG_INCLUDE_DIRS})
+  parse_Makefile_am(${CMAKE_CURRENT_SOURCE_DIR}/examples "CWEBP_SRCS"
+    "cwebp")
   add_executable(cwebp ${CWEBP_SRCS})
   target_link_libraries(cwebp exampleutil imagedec webp)
-  target_include_directories(cwebp PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/src)
-  install(TARGETS cwebp RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})
+  install(TARGETS cwebp RUNTIME DESTINATION bin)
 endif()
 
 if(WEBP_BUILD_GIF2WEBP OR WEBP_BUILD_IMG2WEBP)
-  parse_makefile_am(${CMAKE_CURRENT_SOURCE_DIR}/src/mux "WEBP_MUX_SRCS" "")
-  add_library(libwebpmux ${WEBP_MUX_SRCS})
-  target_link_libraries(libwebpmux webp)
-  target_include_directories(libwebpmux
-                             PRIVATE ${CMAKE_CURRENT_BINARY_DIR}
-                                     ${CMAKE_CURRENT_SOURCE_DIR})
+  parse_Makefile_am(${CMAKE_CURRENT_SOURCE_DIR}/src/mux "WEBP_MUX_SRCS"
+    "")
+  add_library(webpmux ${WEBP_MUX_SRCS})
+  target_link_libraries(webpmux webp)
   parse_version(mux/Makefile.am webpmux WEBP_MUX_SOVERSION)
-  set_target_properties(libwebpmux
-                        PROPERTIES VERSION
-                                   ${PACKAGE_VERSION}
-                                   SOVERSION
-                                   ${WEBP_MUX_SOVERSION})
-  set_target_properties(libwebpmux
-                        PROPERTIES PUBLIC_HEADER
-                                   "${CMAKE_CURRENT_SOURCE_DIR}/src/webp/mux.h;\
-${CMAKE_CURRENT_SOURCE_DIR}/src/webp/mux_types.h;\
-${CMAKE_CURRENT_SOURCE_DIR}/src/webp/types.h;")
-  set_target_properties(libwebpmux PROPERTIES OUTPUT_NAME webpmux)
-  list(APPEND INSTALLED_LIBRARIES libwebpmux)
-  configure_pkg_config("src/mux/libwebpmux.pc")
+  set_target_properties(webpmux PROPERTIES VERSION ${WEBP_VERSION}
+    SOVERSION ${WEBP_MUX_SOVERSION})
+  list(APPEND INSTALLED_LIBRARIES webpmux)
 endif()
 
 if(WEBP_BUILD_GIF2WEBP)
   # gif2webp
   include_directories(${WEBP_DEP_GIF_INCLUDE_DIRS})
-  parse_makefile_am(${CMAKE_CURRENT_SOURCE_DIR}/examples "GIF2WEBP_SRCS"
-                    "gif2webp")
+  parse_Makefile_am(${CMAKE_CURRENT_SOURCE_DIR}/examples "GIF2WEBP_SRCS"
+    "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)
-  install(TARGETS gif2webp RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})
+  target_link_libraries(gif2webp exampleutil imageioutil webp webpmux
+    ${WEBP_DEP_GIF_LIBRARIES})
+  install(TARGETS gif2webp RUNTIME DESTINATION bin)
 endif()
 
 if(WEBP_BUILD_IMG2WEBP)
   # img2webp
   include_directories(${WEBP_DEP_IMG_INCLUDE_DIRS})
-  parse_makefile_am(${CMAKE_CURRENT_SOURCE_DIR}/examples "IMG2WEBP_SRCS"
-                    "img2webp")
+  parse_Makefile_am(${CMAKE_CURRENT_SOURCE_DIR}/examples "IMG2WEBP_SRCS"
+    "img2webp")
   add_executable(img2webp ${IMG2WEBP_SRCS})
-  target_link_libraries(img2webp
-                        exampleutil
-                        imagedec
-                        imageioutil
-                        webp
-                        libwebpmux)
-  target_include_directories(img2webp PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/src)
-  install(TARGETS img2webp RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})
+  target_link_libraries(img2webp exampleutil imagedec imageioutil webp webpmux)
+  install(TARGETS img2webp RUNTIME DESTINATION bin)
 endif()
 
-if(WEBP_BUILD_VWEBP)
-  # vwebp
-  find_package(GLUT)
-  if(GLUT_FOUND)
-    include_directories(${WEBP_DEP_IMG_INCLUDE_DIRS})
-    parse_makefile_am(${CMAKE_CURRENT_SOURCE_DIR}/examples "VWEBP_SRCS" "vwebp")
-    add_executable(vwebp ${VWEBP_SRCS})
-    target_link_libraries(vwebp
-                          ${OPENGL_LIBRARIES}
-                          exampleutil
-                          GLUT::GLUT
-                          imageioutil
-                          webp
-                          webpdemux)
-    target_include_directories(vwebp
-                               PRIVATE GLUT::GLUT
-                                       ${CMAKE_CURRENT_BINARY_DIR}/src
-                                       ${OPENGL_INCLUDE_DIR})
-    install(TARGETS vwebp RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})
-    if(${CMAKE_SYSTEM_NAME} STREQUAL "Darwin")
-      check_c_compiler_flag("-Wno-deprecated-declarations" HAS_NO_DEPRECATED)
-      if(HAS_NO_DEPRECATED)
-        target_compile_options(vwebp PRIVATE "-Wno-deprecated-declarations")
-      endif()
-    endif()
-  endif()
-endif()
-
-if(WEBP_BUILD_WEBPINFO)
+if (WEBP_BUILD_WEBPINFO)
   # webpinfo
   include_directories(${WEBP_DEP_IMG_INCLUDE_DIRS})
-  parse_makefile_am(${CMAKE_CURRENT_SOURCE_DIR}/examples "WEBPINFO_SRCS"
-                    "webpinfo")
+  parse_Makefile_am(${CMAKE_CURRENT_SOURCE_DIR}/examples "WEBPINFO_SRCS"
+    "webpinfo")
   add_executable(webpinfo ${WEBPINFO_SRCS})
   target_link_libraries(webpinfo exampleutil imageioutil)
-  target_include_directories(webpinfo PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/src)
-  install(TARGETS webpinfo RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})
-endif()
-
-if(WEBP_BUILD_WEBPMUX)
-  # webpmux
-  parse_makefile_am(${CMAKE_CURRENT_SOURCE_DIR}/examples "WEBPMUX_SRCS"
-                    "webpmux")
-  add_executable(webpmux ${WEBPMUX_SRCS})
-  target_link_libraries(webpmux exampleutil imageioutil libwebpmux webp)
-  target_include_directories(webpmux PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/src)
-  install(TARGETS webpmux RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})
-endif()
-
-if(WEBP_BUILD_EXTRAS)
-  set(EXTRAS_MAKEFILE "${CMAKE_CURRENT_SOURCE_DIR}/extras")
-  parse_makefile_am(${EXTRAS_MAKEFILE} "WEBP_EXTRAS_SRCS" "libwebpextras_la")
-  parse_makefile_am(${EXTRAS_MAKEFILE} "GET_DISTO_SRCS" "get_disto")
-  parse_makefile_am(${EXTRAS_MAKEFILE} "WEBP_QUALITY_SRCS" "webp_quality")
-  parse_makefile_am(${EXTRAS_MAKEFILE} "VWEBP_SDL_SRCS" "vwebp_sdl")
-
-  # get_disto
-  add_executable(get_disto ${GET_DISTO_SRCS})
-  target_link_libraries(get_disto imagedec)
-  target_include_directories(get_disto
-                             PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
-                                     ${CMAKE_CURRENT_SOURCE_DIR}/src
-                                     ${CMAKE_CURRENT_BINARY_DIR}/src)
-  install(TARGETS get_disto RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})
-
-  # webp_quality
-  add_executable(webp_quality ${WEBP_QUALITY_SRCS} ${WEBP_EXTRAS_SRCS})
-  target_link_libraries(webp_quality exampleutil imagedec)
-  target_include_directories(webp_quality PRIVATE ${CMAKE_CURRENT_SOURCE_DIR})
-  install(TARGETS webp_quality RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})
-
-  # vwebp_sdl
-  find_package(SDL)
-  if(SDL_FOUND)
-    add_executable(vwebp_sdl ${VWEBP_SDL_SRCS})
-    target_link_libraries(vwebp_sdl ${SDL_LIBRARY} imageioutil webp)
-    target_include_directories(vwebp_sdl
-                               PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
-                                       ${CMAKE_CURRENT_SOURCE_DIR}/src
-                                       ${CMAKE_CURRENT_BINARY_DIR}
-                                       ${CMAKE_CURRENT_BINARY_DIR}/src
-                                       ${SDL_INCLUDE_DIR})
-    set(WEBP_HAVE_SDL 1)
-    target_compile_definitions(vwebp_sdl PUBLIC WEBP_HAVE_SDL)
-    install(TARGETS vwebp_sdl RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})
-  endif()
+  install(TARGETS webpinfo RUNTIME DESTINATION bin)
 endif()
 
 if(WEBP_BUILD_WEBP_JS)
   # JavaScript version
-  add_executable(webp_js ${CMAKE_CURRENT_SOURCE_DIR}/extras/webp_to_sdl.c)
+  add_executable(webp_js
+                 ${CMAKE_CURRENT_SOURCE_DIR}/extras/webp_to_sdl.c)
   target_link_libraries(webp_js webpdecoder SDL)
-  target_include_directories(webp_js PRIVATE ${CMAKE_CURRENT_BINARY_DIR})
-  set(WEBP_HAVE_SDL 1)
-  set_target_properties(
-    webp_js
-    PROPERTIES LINK_FLAGS
-               "-s EXPORTED_FUNCTIONS='[\"_WebpToSDL\"]' -s INVOKE_RUN=0 \
-       -s EXTRA_EXPORTED_RUNTIME_METHODS='[\"cwrap\"]'")
+  set_target_properties(webp_js PROPERTIES LINK_FLAGS
+      "-s EXPORTED_FUNCTIONS='[\"_WebpToSDL\"]' -s INVOKE_RUN=0")
   set_target_properties(webp_js PROPERTIES OUTPUT_NAME webp)
   target_compile_definitions(webp_js PUBLIC EMSCRIPTEN WEBP_HAVE_SDL)
 
   # WASM version
-  add_executable(webp_wasm ${CMAKE_CURRENT_SOURCE_DIR}/extras/webp_to_sdl.c)
+  add_executable(webp_wasm
+                 ${CMAKE_CURRENT_SOURCE_DIR}/extras/webp_to_sdl.c)
   target_link_libraries(webp_wasm webpdecoder SDL)
-  target_include_directories(webp_wasm PRIVATE ${CMAKE_CURRENT_BINARY_DIR})
-  set_target_properties(
-    webp_wasm
-    PROPERTIES LINK_FLAGS "-s WASM=1 \
-       -s EXPORTED_FUNCTIONS='[\"_WebpToSDL\"]' -s INVOKE_RUN=0 \
-       -s EXTRA_EXPORTED_RUNTIME_METHODS='[\"cwrap\"]'")
+  set_target_properties(webp_wasm PROPERTIES LINK_FLAGS
+      "-s WASM=1 -s 'BINARYEN_METHOD=\"native-wasm\"' \
+      -s EXPORTED_FUNCTIONS='[\"_WebpToSDL\"]' -s INVOKE_RUN=0")
   target_compile_definitions(webp_wasm PUBLIC EMSCRIPTEN WEBP_HAVE_SDL)
 
-  target_compile_definitions(webpdspdecode PUBLIC EMSCRIPTEN)
-endif()
-
-if(WEBP_BUILD_ANIM_UTILS)
-  # anim_diff
-  include_directories(${WEBP_DEP_IMG_INCLUDE_DIRS} ${WEBP_DEP_GIF_INCLUDE_DIRS})
-  parse_makefile_am(${CMAKE_CURRENT_SOURCE_DIR}/examples "ANIM_DIFF_SRCS"
-                    "anim_diff")
-  add_executable(anim_diff ${ANIM_DIFF_SRCS})
-  target_link_libraries(anim_diff
-                        exampleutil
-                        imagedec
-                        imageenc
-                        imageioutil
-                        webp
-                        libwebpmux
-                        webpdemux
-                        ${WEBP_DEP_GIF_LIBRARIES})
-  target_include_directories(anim_diff PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/src)
-
-  # anim_dump
-  include_directories(${WEBP_DEP_IMG_INCLUDE_DIRS} ${WEBP_DEP_GIF_INCLUDE_DIRS})
-  parse_makefile_am(${CMAKE_CURRENT_SOURCE_DIR}/examples "ANIM_DUMP_SRCS"
-                    "anim_dump")
-  add_executable(anim_dump ${ANIM_DUMP_SRCS})
-  target_link_libraries(anim_dump
-                        exampleutil
-                        imagedec
-                        imageenc
-                        imageioutil
-                        webp
-                        libwebpmux
-                        webpdemux
-                        ${WEBP_DEP_GIF_LIBRARIES})
-  target_include_directories(anim_dump PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/src)
+  target_compile_definitions(webpdecoder PUBLIC EMSCRIPTEN)
 endif()
 
 # Install the different headers and libraries.
-include(GNUInstallDirs)
+install(FILES ${CMAKE_CURRENT_SOURCE_DIR}/src/webp/decode.h
+              ${CMAKE_CURRENT_SOURCE_DIR}/src/webp/demux.h
+              ${CMAKE_CURRENT_SOURCE_DIR}/src/webp/encode.h
+              ${CMAKE_CURRENT_SOURCE_DIR}/src/webp/mux.h
+              ${CMAKE_CURRENT_SOURCE_DIR}/src/webp/mux_types.h
+              ${CMAKE_CURRENT_SOURCE_DIR}/src/webp/types.h
+        DESTINATION include/webp)
 install(TARGETS ${INSTALLED_LIBRARIES}
-        EXPORT ${PROJECT_NAME}Targets
-        PUBLIC_HEADER DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/webp
-        INCLUDES
-        DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
-        ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
-        LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
-        RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})
-set(ConfigPackageLocation ${CMAKE_INSTALL_DATADIR}/${PROJECT_NAME}/cmake/)
-install(EXPORT ${PROJECT_NAME}Targets
-        NAMESPACE ${PROJECT_NAME}::
-        DESTINATION ${ConfigPackageLocation})
+        LIBRARY DESTINATION lib
+        ARCHIVE DESTINATION lib)
 
 # Create the CMake version file.
 include(CMakePackageConfigHelpers)
 write_basic_package_version_file(
   "${CMAKE_CURRENT_BINARY_DIR}/WebPConfigVersion.cmake"
-  VERSION ${PACKAGE_VERSION}
-  COMPATIBILITY AnyNewerVersion)
+  VERSION ${WEBP_VERSION}
+  COMPATIBILITY AnyNewerVersion
+)
 
 # Create the Config file.
 include(CMakePackageConfigHelpers)
+set(ConfigPackageLocation share/WebP/cmake/)
 configure_package_config_file(
   ${CMAKE_CURRENT_SOURCE_DIR}/cmake/WebPConfig.cmake.in
   ${CMAKE_CURRENT_BINARY_DIR}/WebPConfig.cmake
-  INSTALL_DESTINATION
-  ${ConfigPackageLocation})
+  INSTALL_DESTINATION ${ConfigPackageLocation}
+)
 
 # Install the generated CMake files.
-install(FILES "${CMAKE_CURRENT_BINARY_DIR}/WebPConfigVersion.cmake"
-              "${CMAKE_CURRENT_BINARY_DIR}/WebPConfig.cmake"
-        DESTINATION ${ConfigPackageLocation})
+install(
+  FILES "${CMAKE_CURRENT_BINARY_DIR}/WebPConfigVersion.cmake"
+        "${CMAKE_CURRENT_BINARY_DIR}/WebPConfig.cmake"
+  DESTINATION ${ConfigPackageLocation}
+)
 
 # Install the man pages.
-set(MAN_PAGES
-    cwebp.1
-    dwebp.1
-    gif2webp.1
-    img2webp.1
-    vwebp.1
-    webpmux.1
-    webpinfo.1)
-set(EXEC_BUILDS
-    "CWEBP"
-    "DWEBP"
-    "GIF2WEBP"
-    "IMG2WEBP"
-    "VWEBP"
-    "WEBPMUX"
-    "WEBPINFO")
+set(MAN_PAGES cwebp.1 dwebp.1 gif2webp.1 img2webp.1 vwebp.1 webpmux.1
+  webpinfo.1)
+set(EXEC_BUILDS "CWEBP" "DWEBP" "GIF2WEBP" "IMG2WEBP" "VWEBP" "WEBPMUX"
+  "WEBPINFO")
 list(LENGTH MAN_PAGES MAN_PAGES_LENGTH)
 math(EXPR MAN_PAGES_RANGE "${MAN_PAGES_LENGTH} - 1")
 
@@ -666,7 +335,8 @@ foreach(I_MAN RANGE ${MAN_PAGES_RANGE})
   if(WEBP_BUILD_${EXEC_BUILD})
     list(GET MAN_PAGES ${I_MAN} MAN_PAGE)
     install(FILES ${CMAKE_CURRENT_SOURCE_DIR}/man/${MAN_PAGE}
-            DESTINATION ${CMAKE_INSTALL_MANDIR}/man1
-            COMPONENT doc)
+      DESTINATION ${CMAKE_INSTALL_PREFIX}/share/man/man1
+      COMPONENT doc
+    )
   endif()
 endforeach()

ChangeLog

@@ -1,551 +1,9 @@
-2ad0916d update NEWS
-1287362b bump version to 1.0.3
-7b968cc2 update AUTHORS
-9d6988f4 Fix the oscillating prediction problem at low quality
-312f74d0 makefile.unix: allow *_LIBS to be overridden w/EXTRA_LIBS
-92dbf237 filters_sse2,cosmetics: shorten some long lines
-a277d197 filters_sse2.c: quiet integer sanitizer warnings
-804540f1 Fix cpufeatures in CMake.
-bf00c15b Add CMake option for bittrace.
-a788b498 filters_sse2.c: quiet integer sanitizer warnings
-e6a92c5e filters.c: quiet integer sanitizer warnings
-ec1cc40a lossless.c: remove U32 -> S8 conversion warnings
-1106478f remove conversion U32 -> S8 warnings
-812a6b49 lossless_enc: fix some conversion warning
-4627c1c9 lossless_enc,TransformColorBlue: quiet uint32_t conv warning
-c84673a6 lossless_enc_sse{2,41}: quiet signed conv warnings
-776a7757 dec_sse2: quiet signed conv warnings
-bd39c063 Merge "thread_utils: release mutex before signaling"
-0550576f Merge "(alpha_processing,enc}_sse2: quiet signed conv warnings"
-6682f2c4 thread_utils: release mutex before signaling
-e78dea75 (alpha_processing,enc}_sse2: quiet signed conv warnings
-9acf18ba iosbuild.sh: add WebP{Demux,Mux}.framework
-b9be7e65 vwebp: remove the -fit option (and make it default)
-1394a2bb Merge "README.webp_js: update Emscripten.cmake note"
-dd3e7f8a README.webp_js: update Emscripten.cmake note
-32cf8801 predictor_enc,GetBestGreenRedToBlue: quiet implicit conv warnings
-e1c8acb5 Merge "vwebp: add a -fit option"
-cbd23dd5 vwebp: add a -fit option
-2e672351 bit_writer_utils,Flush: quiet implicit conversion warnings
-1326988d swig: update libwebp_python_wrap.c
-0e7f8548 update generated swig files
-17ed1438 Merge "PutLE{16,24}: quiet implicit conversion warnings"
-24686538 PutLE{16,24}: quiet implicit conversion warnings
-153bb3a0 fix some clang-7 warnings:
-ab2dc893 Rescaler: fix rounding error
-aa65f89a HistogramCombineStochastic: fix free of uninit value
-af0bac64 Merge "encode.h: mention 'exact' default in WebPEncodeLossless*"
-6d2e11ec encode.h: mention 'exact' default in WebPEncodeLossless*
-8c3f04fe AndroidCPUInfo: reorder terms in conditional
-fcfd9c71 BitTrace: if BITTRACE is > 0, record and print syntax bits used
-067031ea Speedups for unused Huffman groups.
-01ac46ba libwebp: Display "libjpeg error:" in imageio/jpegdec
-d9a662e1 WebPRescalerGetScaledDimensions: round scaled dimension up
-62eb3f08 libwebp: Fix missing '{' in README
-e05f785a Merge "unicode,INIT_WARGV: add missing cast"
-63c9a69f tag the VP8LHashPix() function for potential uint roll-over
-2b7214ab unicode,INIT_WARGV: add missing cast
-bf424b46 tag the GetPixPairHash64() function for potential uint roll-over
-7d05d6ca Have the color cache computation be u32-bit only.
-6bcf8769 Remove BINARYEN_METHOD in wasm settings.
-2b98df90 update ChangeLog (tag: v1.0.2-rc1, tag: v1.0.2)
-61e372b7 update NEWS
-7ae658a0 bump version to 1.0.2
-51c4907d update AUTHORS
-666bd6c6 man/cwebp.1: refine near-lossless text
-561cdce5 Clarify the doc about GetFeatures.
-aec2cf02 near_lossless: fix fuzzing-detected integer overflow
-928a75de webp: Fix VP8LBitWriterClone() bug
-5173d4ee neon IsFlat
-5b081219 IsFlat: inline when possible
-381b7b54 IsFlat: use int for thresh
-6ed15ea1 fix unprobable leak in webp_sdl.c
-22bbb24e Merge "IsFlat: return int"
-8b3fb238 Merge tag 'v1.0.1'
-f435de95 IsFlat: return int
-41521aed utils.h: only define WEBP_NEED_LOG_TABLE_8BIT when needed
-9f4d4a3f neon: GetResidualCost
-0fd7514b neon: SetResidualCoeffs
-f95a996c Simpler histogram clustering.
-e85d3313 update ChangeLog (tag: v1.0.1-rc2, tag: v1.0.1)
-fa8210e4 Fix pair update in stochastic entropy merging.
-fd198f73 add codereview.settings
-825389ac README.mux: add a reference to the AnimDecoder API
-3be698c3 CMake: fix webp_js compilation
-485ff86f Fix pair update in stochastic entropy merging.
-4cd0582d CMake: fix webp_js compilation
-4cbb4caf update NEWS
-f5a5918d bump version to 1.0.1
-d61385db Speed-up: Make sure we only initialize histograms when needed.
-6752904b Speed-up: Make sure we only initialize histograms when needed.
-0c570316 update AUTHORS
-301a2dda img2webp: add help note about arguments from a file
-f0abab92 Speedups for empty histograms.
-f2dfd925 Split HistogramAdd to only have the high level logic in C.
-06b7bc7d Fix compilation on windows and clang-cl+ninja.
-b6284d82 img2webp: add help note about arguments from a file
-decf6f6b Speedups for empty histograms.
-dea3e899 Split HistogramAdd to only have the high level logic in C.
-632798ae Merge "Fix compilation on windows and clang-cl+ninja."
-dc1a9518 Merge "libwebp: Unicode command tools on Windows"
-9cf9841b libwebp: Unicode command tools on Windows
-98179495 remove some minor TODOs
-a376e7b9 Fix compilation on windows and clang-cl+ninja.
-cbf82cc0 Remove AVX2 files.
-5030e902 Merge "TIFF decoder: remove unused KINV definition"
-ac543311 Remove a few more useless #defines
-123d3306 TIFF decoder: remove unused KINV definition
-ef1094b0 Merge "- install pkg-config files during the CMake build"
-b911fbc9 libwebp: Remove duplicate GIFDisplayError in anim_util
-eee00b66 - install pkg-config files during the CMake build
-ac3ec8c9 Merge "Clean-up the common sources in dsp."
-3e13da7b Clean-up the common sources in dsp.
-5c395f1d libwebp: cmake-format all
-e7a69729 libwebp: Add extras targets in CMakeLists.txt
-e52485d6 libwebp: Rename macros in webpmux.c
-92dc0f09 clean-up MakeInputImageCopy()
-39952de2 VP8IteratorImport: add missing 'const'
-382af7a2 clean-up WebPBlendAlpha
-14d020f6 libwebp: Use ExUtilGet*() in anim_diff
-0d92ff25 libwebp: remove useless variable in gif2webp
-556cb1b4 Merge "CMake: Set WEBP_BUILD_GIF2WEBP to off"
-da26ee49 CMake: Set WEBP_BUILD_GIF2WEBP to off
-b2a867c0 cwebp: Don't premultiply during -resize if -exact
-637141bc pngdec: fix build w/libpng < 1.4.x
-bc5092b1 pngdec: set memory functions
-50d8345a Fix CMake math library.
-6aa3e8aa Fix math library on Visual Studio.
-d71df4e2 Fix math library finding in CMake.
-de08d727 cosmetics: normalize include guard comment
-009562b4 vwebp: Fix bug when Dispose then NoBlend frames
-423f2579 Fix up CMake to create targets.
-907208f9 Wait for all threads to be done in DecodeRemaining.
-4649b3c4 vwebp: Add background color display option
-78ad57a3 Fix bad glClearColor parameters
-da96d8d9 Allow for a non-initialized alpha decompressor in DoRemap.
-2563db47 fix rescaling rounding inaccuracy
-211f37ee fix endian problems in pattern copy
-5f0f5c07 Make sure partition #0 is read before VP8 data in IDecode.
-de98732b fix GetColorf() bug
-4338cd36 misc fixes in libwebpmux
-e00af13e fix signatures after a9ceda7ff1
-a9ceda7f Speed-up chunk list operations.
-2281bbf6 Merge "Better handling of bogus Huffman codes."
-39cb9aad Better handling of bogus Huffman codes.
-89cc9d37 Merge "fix read-overflow while parsing VP8X chunk"
-95fd6507 fix read-overflow while parsing VP8X chunk
-9e729fe1 Fix VP8IoTeardownHook being called twice on worker sync failure
-29fb8562 Merge "muxread,anmf: fail on multiple image chunks"
-eb82ce76 muxread,anmf: fail on multiple image chunks
-1344a2e9 fix alpha-filtering crash when image width is larger than radius
-be738c6d muxread,ChunkVerifyAndAssign: validate chunk_size
-2c70ad76 muxread,CreateInternal: fix riff size checks
-569001f1 Fix for thread race heap-use-after-free
-c56a02d9 Android.mk: use LOCAL_EXPORT_C_INCLUDES w/public libs
-15795596 CMakeLists.txt,cosmetics: normalize if() formatting
-1a44c233 Merge "cmake: add support for webpmux"
-e9569ad7 Merge "configure,*am,cosmetics: s/WANT_/BUILD_/"
-35c7de6f cmake: add support for webpmux
-0f25e61c WebpToSDL(): fix the return value in case of error
-5d8985de configure,*am,cosmetics: s/WANT_/BUILD_/
-895fd28f Merge "man/Makefile.am: add img2webp.1"
-5cf3e2af man/Makefile.am: add img2webp.1
-2a9de5b9 Add build rules for anim_diff & anim_dump utils.
-71ed73cf fix invalid check for buffer size
-af0e4fbb gif2webp: fix transcode of loop count=65535
-dce5d764 Limit memory allocation when reading invalid Huffman codes.
-f9df0081 Merge "cmake: quiet glut deprecation warnings on OS X"
-dc39b16f webpmux.1: correct grammar
-c7aa1264 cwebp.c: fix a missing \n
-53aa51e9 Merge tag 'v1.0.0'
-698b8844 update ChangeLog (tag: v1.0.0)
-8d510751 webp-container-spec: correct frame duration=0 note
-e6b2164e vwebp: Copy Chrome's behavior w/frame duration == 0
-094b3b28 cmake: quiet glut deprecation warnings on OS X
-71c39a06 webp-container-spec: correct frame duration=0 note
-fd3d5756 vwebp: Copy Chrome's behavior w/frame duration == 0
-b0c966fb Build vwebp from CMake.
-d20b7707 update ChangeLog (tag: v1.0.0-rc3)
-0d5fad46 add WEBP_DSP_INIT / WEBP_DSP_INIT_FUNC
-d77bf512 add WEBP_DSP_INIT / WEBP_DSP_INIT_FUNC
-c1cb86af fix 16b overflow in SSE2
-e577feb7 makefile.unix: add DEBUG flag for compiling w/ debug-symbol
-99be34b3 cwebp,get_disto: fix bpp output
-e122e511 cwebp,get_disto: fix bpp output
-f5565ca8 cmake: Make sure we use near-lossless by default.
-d898dc14 fix bug in WebPImport565: alpha value was not set
-1c8f358d Fix CMake with WASM.
-a0215fb7 webp_js: fix webp_js demo html
-882784b0 update ChangeLog (tag: v1.0.0-rc2)
-2f930e08 Revert "Use proper targets for CMake."
-8165e8fb Use proper targets for CMake.
-3f157dd5 Remove some very hard TODOs.
-abb47760 Merge "Use proper targets for CMake."
-cd758a17 {de,}mux/Makefile.am: add missing headers
-e155dda0 Use proper targets for CMake.
-b892b8ba makefile.unix,dist: use ascii for text output
-64a57d05 add -version option to anim_dump,anim_diff and img2webp
-994be82d Merge "Remove some very hard TODOs."
-4033e1d7 Remove some very hard TODOs.
-fc1b8e3a webp_js: fix webp_js demo html
-15aa48d9 update ChangeLog (tag: v1.0.0-rc1)
-e607dabc update AUTHORS
-38410c08 [CFI] Remove function pointer casts
-978eec25 [CFI] Remove function pointer casts
-c57b2736 bump version to 1.0.0
-cba28853 update NEWS
-c909d531 Merge "remove some deprecation warning on MacOSX"
-217443c7 remove some deprecation warning on MacOSX
-b672bdfa configure: quiet glut deprecation warnings on OS X
-daa9fcaf configure: use sdl-config if available
-dd174cae Merge "imagedec: support metadata reading for WebP image decoding"
-641cedcc imagedec: support metadata reading for WebP image decoding
-065b2ce1 anim_diff: add a couple missing newlines in Help()
-c4cc1147 Merge "gif2webp: force low duration frames to 100ms"
-09333097 gif2webp: force low duration frames to 100ms
-e03f0ec3 sharp_yuv: use 14b fixed-point precision for gamma
-b2db361c image_enc,WebPWritePNG: move locals after setjmp
-74e82ec6 Merge "WebPPictureDistortion: fix big-endian results order"
-645d04ca Merge "cwebp,get_disto: report bpp"
-120f58c3 Merge "lossless*sse2: improve non-const 16-bit vector creation"
-a7fe9412 WebPPictureDistortion: fix big-endian results order
-e26fe066 cwebp,get_disto: report bpp
-9df64e28 Merge changes Id5b4a1a4,Ia20ce844
-8043504f lossless*sse2: improve non-const 16-bit vector creation
-1e3dfc48 Import: extract condition from loop
-3b07d327 Import,RGBA: fix for BigEndian import
-551948e4 Remove unused argument in VP8LBitsEntropy.
-3005237a ReadWebP: fix for big-endian
-499c395a Merge "anim_diff: expose the -max_diff option"
-f69dcd69 Merge "remove WEBP_EXPERIMENTAL_FEATURES"
-07d884d5 anim_diff: expose the -max_diff option
-f4dd9256 remove WEBP_EXPERIMENTAL_FEATURES
-94a8377b extract the command-line parsing helpers to example_util
-fc09e6e2 PNM decoder: prevent unsupported depth=2 PAM case.
-6de58603 MIPS64: Fix defined-but-not-used errors with WEBP_REDUCE_CSP
-cbde5728 gif2webp: add support for reading from stdin
-cf1c5054 Add an SSE4 version of some lossless color transforms.
-45a8b5eb Fix lint error with man page.
-cff38e8f Merge "PNG decoder: handle gAMA chunk"
-59cb1a48 Merge "enable dc error-diffusion always"
-78318b30 PNG decoder: handle gAMA chunk
-664c21dd Merge "remove some TODOs"
-815652de enable dc error-diffusion always
-aec45cec remove some TODOs
-5715dfce fix block-count[] increment in case of large image
-c2d04f3e enable DC error-diffusion always for multi-pass
-96bf07c5 use DC error diffusion for U/V at low-quality
-1c59020b fix missing sse41 targets in makefile.unix
-7a8e814b cosmetics: s/color_space/colorspace/
-05f6fe24 upsampling: rm asserts w/REDUCE_CSP+OMIT_C_CODE
-b4cf5597 Merge "Upsampling SSE2/SSE4 speedup."
-ccbeb32c Makefile.vc: add missing sse41 files
-55403a9a Upsampling SSE2/SSE4 speedup.
-807b53c4 Implement the upsampling/yuv functions in SSE41
-84101a81 Fix wasm WebP compilation
-8bebd2a3 fix warning on MSVC
-a7f93fe3 webpmux: allow reading argument from a file
-b69f18a7 gif2webp.1: fix -loop_compatibility layout
-72d530c0 Merge "fix lossless decoding w/WEBP_REDUCE_SIZE"
-296c7dc4 fix lossless decoding w/WEBP_REDUCE_SIZE
-0d5d029c Merge "ImgIoUtilReadFile: fix file leak upon error"
-ae568ce7 ImgIoUtilReadFile: fix file leak upon error
-796b5a8a Merge tag 'v0.6.1'
-6b7a95fd update ChangeLog (tag: v0.6.1)
-f66955de WEBP_REDUCE_CSP: restrict colorspace support
-1af0df76 Merge "WEBP_REDUCE_CSP: restrict colorspace support"
-6de20df0 WEBP_REDUCE_CSP: restrict colorspace support
-a289d8e7 update ChangeLog (tag: v0.6.1-rc2)
-c10a493c vwebp: disable double buffering on windows & mac
-0d4466c2 webp_to_sdl.c: fix file mode
-1b27bf8b WEBP_REDUCE_SIZE: disable all rescaler code
-126be109 webpinfo: add -version option
-0df22b9e WEBP_REDUCE_SIZE: disable all rescaler code
-9add62b5 bump version to 0.6.1
-d3e26144 update NEWS
-2edda639 README: add webpinfo section
-9ca568ef Merge "right-size some tables"
-31f1995c Merge "SSE2 implementation of HasAlphaXXX"
-a80c46bd SSE2 implementation of HasAlphaXXX
-083507f2 right-size some tables
-2e5785b2 anim_utils.c: remove warning when !defined(WEBP_HAVE_GIF)
-b299c47e add WEBP_REDUCE_SIZE
-f593d71a enc: disable pic->stats/extra_info w/WEBP_DISABLE_STATS
-541179a9 Merge "predictor_enc: fix build w/--disable-near-lossless"
-5755a7ec predictor_enc: fix build w/--disable-near-lossless
-eab5bab7 add WEBP_DISABLE_STATS
-8052c585 remove some petty TODOs from vwebp.
-c245343d move LOAD8x4 and STORE8x2 closer to their use location
-b9e734fd dec,cosmetics: normalize function naming style
-c188d546 dec: harmonize function suffixes
-28c5ac81 dec_sse41: harmonize function suffixes
-e65b72a3 Merge "introduce WebPHasAlpha8b and WebPHasAlpha32b"
-b94cee98 dec_sse2: remove HE8uv_SSE2
-44a0ee3f introduce WebPHasAlpha8b and WebPHasAlpha32b
-aebf59ac Merge "WebPPictureAllocARGB: align argb allocation"
-c184665e WebPPictureAllocARGB: align argb allocation
-3daf7509 WebPParseHeaders: remove obsolete animation TODO
-80285d97 cmake: avoid security warnings under msvc
-650eac55 cmake: don't set -Wall with MSVC
-c462cd00 Remove useless code.
-01a98217 Merge "remove WebPWorkerImpl declaration from the header"
-3c49fc47 Merge "thread_utils: fix potentially bad call to Execute"
-fde2782e thread_utils: fix potentially bad call to Execute
-2a270c1d remove WebPWorkerImpl declaration from the header
-f1f437cc remove mention of 'lossy-only parameters' from the doc
-3879074d Merge "WebPMemToUint32: remove ptr cast to int"
-04b029d2 WebPMemToUint32: remove ptr cast to int
-b7971d0e dsp: avoid defining _C functions w/NEON builds
-6ba98764 webpdec: correct alloc size check w/use_argb
-5cfb3b0f normalize include guards
-f433205e Merge changes Ia17c7dfc,I75423abb,Ia2f716b4,I161caa14,I4210081a, ...
-8d033b14 {dec,enc}_neon: harmonize function suffixes x2
-0295e981 upsampling_neon: harmonize function suffixes
-d572c4e5 yuv_neon: harmonize function suffixes
-ab9c2500 rescaler_neon: harmonize function suffixes
-93e0ce27 lossless_neon: harmonize function suffixes
-22fbc50e lossless_enc_neon: harmonize function suffixes
-447875b4 filters_neon,cosmetics: fix indent
-e51bdd43 remove unused VP8TokenToStats() function
-785da7ea enc_neon: harmonize function suffixes
-bc1a251f dec_neon: harmonize function suffixes
-61e535f1 dsp/lossless: workaround gcc-4.8 bug on arm
-68b2eab7 cwebp: fix alpha reporting w/lossless & metadata
-30042faa WebPDemuxGetI: add doc details around WebPFormatFeature
-0a17f471 Merge "WIP: list includes as descendants of the project dir"
-a4399721 WIP: list includes as descendants of the project dir
-08275708 Merge "Make sure we reach the full range for alpha blending."
-d361a6a7 yuv_sse2: harmonize function suffixes
-6921aa6f upsampling_sse2: harmonize function suffixes
-08c67d3e ssim_sse2: harmonize function suffixes
-582a1b57 rescaler_sse2: harmonize function suffixes
-2c1b18ba lossless_sse2: harmonize function suffixes
-0ac46e81 lossless_enc_sse2: harmonize function suffixes
-bc634d57 enc_sse2: harmonize function suffixes
-bcb7347c dec_sse2: harmonize function suffixes
-e14ad93c Make sure we reach the full range for alpha blending.
-7038ca8d demux,StoreFrame: restore hdr size check to min req
-fb3daad6 cpu: fix ssse3 check
-be590e06 Merge "Fix CMake redefinition for HAVE_CPU_FEATURES_H"
-35f736e1 Fix CMake redefinition for HAVE_CPU_FEATURES_H
-a5216efc Fix integer overflow warning.
-a9c8916b decode.h,WebPIDecGetRGB: clarify output ptr validity
-3c74c645 gif2webp: handle 1-frame case properly + fix anim_diff
-c7f295d3 Merge "gif2webp: introduce -loop_compatibility option"
-b4e04677 gif2webp: introduce -loop_compatibility option
-f78da3de add LOCAL_CLANG_PREREQ and avoid WORK_AROUND_GCC w/3.8+
-01c426f1 define WEBP_USE_INTRINSICS w/gcc-4.9+
-8635973d use sdl-config (if available) to determine the link flags
-e9459382 use CPPFLAGS before CFLAGS
-4a9d788e Merge "Android.mk,mips: fix clang build with r15"
-4fbdc9fb Android.mk,mips: fix clang build with r15
-a80fcc4a ifdef code not used by Chrome/Android.
-3993af12 Fix signed integer overflows.
-f66f94ef anim_dump: small tool to dump frames from animated WebP
-6eba857b Merge "rationalize the Makefile.am"
-c5e34fba function definition cleanup
-3822762a rationalize the Makefile.am
-501ef6e4 configure style fix: animdiff -> anim_diff
-f8bdc268 Merge "protect against NULL dump_folder[] value in ReadAnimatedImage()"
-23bfc652 protect against NULL dump_folder[] value in ReadAnimatedImage()
-8dc3d71b cosmetics,ReadAnimatedWebP: correct function comment
-5bd40066 Merge changes I66a64a0a,I4d2e520f
-7945575c cosmetics,webpinfo: remove an else after a return
-8729fa11 cosmetics,cwebp: remove an else after a return
-f324b7f9 cosmetics: normalize fn proto & decl param names
-869eb369 CMake cleanups.
-289e62a3 Remove declaration of unimplemented VP8ApplyNearLosslessPredict
-20a94186 pnmdec,PAM: validate depth before calculating bytes_per_px
-34130afe anim_encode: fix integer overflow
-42c79aa6 Merge "Encoder: harmonize function suffixes"
-b09307dc Encoder: harmonize function suffixes
-bed0456d Merge "SSIM: harmonize the function suffix"
-54f6a3cf lossless_sse2.c: fix some missed suffix changes
-088f1dcc SSIM: harmonize the function suffix
-86fc4dd9 webpdec: use ImgIoUtilCheckSizeArgumentsOverflow
-08ea9ecd imageio: add ability restrict max image size
-6f9daa4a jpegdec,ReadError: fix leaks on error
-a0f72a4f VP8LTransformColorFunc: drop an non-respected 'const' from the signature.
-8c934902 Merge "Lossess dec: harmonize the function suffixes"
-622242aa Lossess dec: harmonize the function suffixes
-1411f027 Lossless Enc: harmonize the function suffixes
-24ad2e3c add const to two variables
-46efe062 Merge "Allow the lossless cruncher to work for alpha."
-8c3f9a47 Speed-up LZ77.
-1aef4c71 Allow the lossless cruncher to work for alpha.
-b8821dbd Improve the box LZ77 speed.
-7beed280 add missing ()s to macro parameters
-6473d20b Merge "fix Android standalone toolchain build"
-dcefed95 Merge "build.gradle: fix arm64 build"
-0c83a8bc Merge "yuv: harmonize suffix naming"
-c6d1db4b fix Android standalone toolchain build
-663a6d9d unify the ALTERNATE_CODE flag usage
-73ea9f27 yuv: harmonize suffix naming
-c71b68ac build.gradle: fix arm64 build
-c4568b47 Rescaler: harmonize the suffix naming
-6cb13b05 Merge "alpha_processing: harmonize the naming suffixes to be _C()"
-83a3e69a Merge "simplify WEBP_EXTERN macro"
-7295fde2 Merge "filters: harmonize the suffixes naming to _SSE2(), _C(), etc."
-8e42ba4c simplify WEBP_EXTERN macro
-331ab34b cost*.c: harmonize the suffix namings
-b161f670 filters: harmonize the suffixes naming to _SSE2(), _C(), etc.
-dec5e4d3 alpha_processing: harmonize the naming suffixes to be _C()
-6878d427 fix memory leak in SDL_Init()
-461ae555 Merge "configure: fix warnings in sdl check"
-62486a22 configure: test for -Wundef
-92982609 dsp.h: fix -Wundef w/__mips_dsp_rev
-0265cede configure: fix warnings in sdl check
-88c73d8a backward_references_enc.h: fix WINDOW_SIZE_BITS check
-4ea49f6b rescaler_sse2.c: fix WEBP_RESCALER_FIX -> _RFIX typo
-1b526638 Clean-up some CMake
-87f57a4b Merge "cmake: fix gif lib detection when cross compiling"
-b34a9db1 cosmetics,dec_sse2: remove some redundant comments
-471c5755 cmake: fix gif lib detection when cross compiling
-c793417a cmake: disable gif2webp if gif lib isn't found
-dcbc1c88 cmake: split gif detection from IMG deps
-66ad84f0 Merge "muxread: remove unreachable code"
-50ec3ab7 muxread: remove unreachable code
-7d67a164 Lossy encoding: smoothen transparent areas to improve compression
-e50650c7 Merge "fix signature for DISABLE_TOKEN_BUFFER compilation"
-671d2567 fix signature for DISABLE_TOKEN_BUFFER compilation
-d6755580 cpu.cmake: use unique flag to test simd disable flags
-28914528 Merge "Remove the argb* files."
-8acb4942 Remove the argb* files.
-3b62347b README: correct cmake invocation note
-7ca0df13 Have the SSE2 version of PackARGB use common code.
-7b250459 Merge "Re-use the transformed image when trying several LZ77 in lossless."
-e132072f Re-use the transformed image when trying several LZ77 in lossless.
-5d7a50ef Get code to compile in C++.
-7b012987 configure: test for -Wparentheses-equality
-f0569adb Fix man pages for multi-threading.
-f1d5a397 multithread cruncher: only copy stats when picture->stats != NULL
-f8c2ac15 Multi-thread the lossless cruncher.
-a88c6522 Merge "Integrate a new LZ77 looking for matches in the neighborhood of a pixel only."
-8f6df1d0 Unroll Predictors 10, 11 and 12.
-355c3d1b Integrate a new LZ77 looking for matches in the neighborhood of a pixel only.
-a1779a01 Refactor LZ77 handling in preparation for a new method.
-67de68b5 Android.mk/build.gradle: fix mips build with clang from r14b
-f209a548 Use the plane code and not the distance when computing statistics.
-b903b80c Split cost-based backward references in its own file.
-498cad34 Cosmetic changes in backward reference.
-e4eb4587 lossless, VP8LTransformColor_C: make sure no overflow happens with colors.
-af6deaff webpinfo: handle alpha flag mismatch
-7caef29b Fix typo that creeped in.
-39e19f92 Merge "near lossless: fix unsigned int overflow warnings."
-9bbc0891 near lossless: fix unsigned int overflow warnings.
-e1118d62 Merge "cosmetics,FindClosestDiscretized: use uint in mask creation"
-186bc9b7 Merge "webpinfo: tolerate ALPH+VP8L"
-b5887297 cosmetics,FindClosestDiscretized: use uint in mask creation
-f1784aee near_lossless,FindClosestDiscretized: use unsigned ops
-0d20abb3 webpinfo: tolerate ALPH+VP8L
-972104b3 webpmux: tolerate false positive Alpha flag
-dd7e83cc tiffdec,ReadTIFF: ensure data_size is < tsize_t max
-d988eb7b tiffdec,MyRead: quiet -Wshorten-64-to-32 warning
-dabda707 webpinfo: add support to parse Alpha bitstream
-4c117643 webpinfo: correct background color output, BGRA->ARGB
-defc98d7 Doc: clarify the role of quality in WebPConfig.
-d78ff780 Merge "Fix code to compile with C++."
-c8f14093 Fix code to compile with C++.
-497dc6a7 pnmdec: sanitize invalid header output
-d78e5867 Merge "configure: test for -Wconstant-conversion"
-481e91eb Merge "pnmdec,PAM: set bytes_per_px based on depth when missing"
-93b12753 configure: test for -Wconstant-conversion
-645f0c53 pnmdec,PAM: set bytes_per_px based on depth when missing
-e9154605 Merge "vwebp: activate GLUT double-buffering"
-818d795b vwebp: activate GLUT double-buffering
-d63e6f4b Add a man page for webpinfo
-4d708435 Merge "NEON: implement ConvertRGB24ToY/BGR24/ARGB/RGBA32ToUV/ARGBToUV"
-faf42213 NEON: implement ConvertRGB24ToY/BGR24/ARGB/RGBA32ToUV/ARGBToUV
-b4d576fa Install man pages with CMake.
-cbc1b921 webpinfo: add features to parse bitstream header
-e644c556 Fix bad bit writer initialization.
-b62cdad2 Merge "Implement a cruncher for lossless at method 6."
-da3e4dfb use the exact constant for the gamma transfer function
-a9c701e0 Merge "tiffdec: fix EXTRASAMPLES check"
-adab8ce0 Implement a cruncher for lossless at method 6.
-1b92b237 Merge "Fix VP8ApplyNearLossless to respect const and stride."
-1923ff02 tiffdec: fix EXTRASAMPLES check
-97cce5ba tiffdec: only request EXTRASAMPLES w/> 3 samples/px
-0dcd85b6 Fix VP8ApplyNearLossless to respect const and stride.
-f7682189 yuv: rationalize the C/SSE2 function naming
-52245424 NEON implementation of some Sharp-YUV420 functions
-690efd82 Avoid several backward reference copies.
-4bb1f607 src/dec/vp8_dec.h, cosmetics: fix comments
-285748be cmake: build/install webpinfo
-78fd199c backward_references_enc.c: clear -Wshadow warnings
-ae836410 WebPLog2FloorC: clear -Wshadow warning
-d0b7404e Merge "WASM support"
-134e314f WASM support
-c08adb6f Merge "VP8LEnc: remove use of BitsLog2Ceiling()"
-28c37ebd VP8LEnc: remove use of BitsLog2Ceiling()
-2cb58ab2 webpinfo: output format as a human readable string
-bb175a93 Merge "rename some symbols clashing with MSVC headers"
-39eda658 Remove a duplicated pixel hash implementation.
-36b8274d rename some symbols clashing with MSVC headers
-274daf54 Add webpinfo tool.
-ec5036e4 add explicit reference to /usr/local/{lib,inc}
-18f0dfac Merge "fix TIFF encoder regarding rgbA/RGBA"
-4e2b0b50 Merge "webpdec.h: fix a doc typo"
-e2eeabff Merge "Install binaries, libraries and headers in CMake."
-836607e6 webpdec.h: fix a doc typo
-9273e441 fix TIFF encoder regarding rgbA/RGBA
-17e3c11f Add limited PAM decoding support
-5f624871 Install binaries, libraries and headers in CMake.
-976adac1 Merge "lossless incremental decoding: fix missing eos_ test"
-f8fad4fa lossless incremental decoding: fix missing eos_ test
-27415d41 Merge "vwebp_sdl: fix the makefile.unix"
-49566182 Merge "ImgIoUtilWriteFile(): use ImgIoUtilSetBinaryMode"
-6f75a51b Analyze the transform entropy on the whole image.
-a5e4e3af Use palette only if we can in entropy analysis.
-75a9c3c4 Improve compression by better entropy analysis.
-39cf6f4f vwebp_sdl: fix the makefile.unix
-699b0416 ImgIoUtilWriteFile(): use ImgIoUtilSetBinaryMode
-7d985bd1 Fix small entropy analysis bug.
-6e7caf06 Optimize the color cache size.
-833c9219 More efficient stochastic histogram merge.
-5183326b Refactor the greedy histogram merge.
-99f6f462 Merge "histogram_enc.c,MyRand: s/ul/u/ for unsigned constants"
-80a22186 ssim.c: remove dead include
-a128dfff histogram_enc.c,MyRand: s/ul/u/ for unsigned constants
-693bf74e move the SSIM calculation code in ssim.c / ssim_sse2.c
-10d791ca Merge "Fix the random generator in HistogramCombineStochastic."
-fa63a966 Fix the random generator in HistogramCombineStochastic.
-16be192f VP8LSetBitPos: remove the eos_ setting
-027151ca don't erase the surface before blitting.
-4105d565 disable WEBP_USE_XXX optimisations when EMSCRIPTEN is defined
-9ee32a75 Merge "WebP-JS: emscripten-based Javascript decoder"
-ca9f7b7d WebP-JS: emscripten-based Javascript decoder
-868aa690 Perform greedy histogram merge in a unified way.
-5b393f2d Merge "fix path typo for vwebp_sdl in Makefile.vc"
-e0012bea CMake: only use libwebpdecoder for building dwebp
-84c2a7b0 fix path typo for vwebp_sdl in Makefile.vc
-1b0e4abf Merge "Add a flag to disable SIMD optimizations."
-32263250 Add a flag to disable SIMD optimizations.
-b494fdec optimize the ARGB->ARGB Import to use memcpy
-f1536039 Merge "ReadWebP: decode directly into a pre-allocated buffer"
-e69ed291 ReadWebP: decode directly into a pre-allocated buffer
-57d8de8a Merge "vwebp_sdl: simple viewer based on SDL"
-5cfd4ebc LZ77 interval speedups. Faster, smaller, simpler.
-1e7ad88b PNM header decoder: add some basic numerical validation
-17c7890c Merge "Add a decoder only library for WebP in CMake."
-be733786 Merge "Add clang build fix for MSA"
-03cda0e4 Add a decoder only library for WebP in CMake.
-aa893914 Add clang build fix for MSA
-31a92e97 Merge "imageio: add limited PNM support for reading"
-dcf9d82a imageio: add limited PNM support for reading
-6524fcd6 vwebp_sdl: simple viewer based on SDL
-6cf24a24 get_disto: fix reference file read
-43d472aa Merge tag 'v0.6.0'
-50d1a848 update ChangeLog (tag: v0.6.0, origin/0.6.0)
 20a7fea0 extras/Makefile.am: fix libwebpextras.la reference
 415f3ffe update ChangeLog (tag: v0.6.0-rc3)
 3c6d1224 update NEWS
 ee4a4141 update AUTHORS
 32ed856f Fix "all|no frames are keyframes" settings.
-1c3190b6 Merge "Fix "all|no frames are keyframes" settings."
 f4dc56fd disable GradientUnfilter_NEON
-4f3e3bbd disable GradientUnfilter_NEON
-2dc0bdca Fix "all|no frames are keyframes" settings.
 0d8e0588 img2webp: treat -loop as a no-op w/single images
 b0450139 ReadImage(): restore size reporting
 0ad3b4ef update ChangeLog (tag: v0.6.0-rc2)
@@ -613,7 +71,7 @@ b016cb91 NEON: faster fancy upsampling
 f04eb376 Merge tag 'v0.5.2'
 341d711c NEON: 5% faster conversion to RGB565 and RGBA4444
 abb54827 remove Clang warnings with unused arch arguments.
-ece9684f update ChangeLog (tag: v0.5.2-rc2, tag: v0.5.2, origin/0.5.2)
+ece9684f update ChangeLog (tag: v0.5.2-rc2, tag: v0.5.2, origin/0.5.2, 0.5.2)
 aa7744ca anim_util: quiet implicit conv warnings in 32-bit
 d9120271 jpegdec: correct ContextFill signature
 24eb3940 Remove some errors when compiling the code as C++.
@@ -900,7 +358,7 @@ bbb6ecd9 Merge "Add MSA optimized distortion functions"
 c0991a14 io,EmitRescaledAlphaYUV: factor out a common expr
 48bf5ed1 build.gradle: remove tab
 bfef6c9f Merge tag 'v0.5.1'
-3d97bb75 update ChangeLog (tag: v0.5.1, origin/0.5.1)
+3d97bb75 update ChangeLog (tag: v0.5.1, origin/0.5.1, 0.5.1)
 deb54d91 Clarify the expected 'config' lifespan in WebPIDecode()
 435308e0 Add MSA optimized encoder transform functions
 dce64bfa Add MSA optimized alpha filter functions
@@ -1094,7 +552,7 @@ b74657fb configure: fix builtin detection w/-Werror
 6c1d7631 avoid Yoda style for comparison
 8ce975ac SSE optimization for vector mismatch.
 7db53831 Merge tag 'v0.5.0'
-37f04949 update ChangeLog (tag: v0.5.0-rc1, tag: v0.5.0, origin/0.5.0)
+37f04949 update ChangeLog (tag: v0.5.0-rc1, tag: v0.5.0, origin/0.5.0, 0.5.0)
 7e7b6ccc faster rgb565/rgb4444/argb output
 4c7f565f update NEWS
 1f62b6b2 update AUTHORS
@@ -1878,7 +1336,7 @@ b5a36cc9 add -near_lossless [0..100] experimental option
 0524d9e5 dsp: detect mips64 & disable mips32 code
 d3485d96 cwebp.1: fix quality description placement
 29a9fe22 Merge tag 'v0.4.1'
-8af27718 update ChangeLog (tag: v0.4.1, origin/0.4.1)
+8af27718 update ChangeLog (tag: v0.4.1, origin/0.4.1, 0.4.1)
 e09e9ff6 Record & log the image pre-processing time.
 f59c0b4b iosbuild.sh: specify optimization flags
 8d34ea3e update ChangeLog (tag: v0.4.1-rc1)
@@ -2263,7 +1721,7 @@ ea59a8e9 Merge "Merge tag 'v0.4.0'"
 effcb0fd Merge tag 'v0.4.0'
 7c76255d autoconf: update ax_pthread.m4
 fff2a11b make -short work with -print_ssim, -print_psnr, etc.
-68e7901d update ChangeLog (tag: v0.4.0-rc1, tag: v0.4.0, origin/0.4.0)
+68e7901d update ChangeLog (tag: v0.4.0-rc1, tag: v0.4.0, origin/0.4.0, 0.4.0)
 256e4333 update NEWS description with new general features
 29625340 Merge "gif2webp: don't use C99 %zu" into 0.4.0
 3b9f9dd0 gif2webp: don't use C99 %zu
@@ -3039,7 +2497,7 @@ a61a824b Merge "Add NULL check in chunk APIs"
 a0770727 mux struct naming
 6c66dde8 Merge "Tune Lossless encoder"
 ab5ea217 Tune Lossless encoder
-74fefc8c Update ChangeLog (tag: v0.2.1, origin/0.2.0)
+74fefc8c Update ChangeLog (tag: v0.2.1, origin/0.2.0, 0.2.0)
 92f8059c Rename some chunks:
 3bb4bbeb Merge "Mux API change:"
 d0c79f05 Mux API change:

Makefile.am

@@ -2,7 +2,7 @@ ACLOCAL_AMFLAGS = -I m4
 SUBDIRS = src imageio man
 EXTRA_DIST = COPYING autogen.sh
 
-if BUILD_EXTRAS
+if WANT_EXTRAS
   SUBDIRS += extras
 endif
 

Makefile.vc

@@ -29,7 +29,7 @@ PLATFORM_LDFLAGS = /SAFESEH
 NOLOGO     = /nologo
 CCNODBG    = cl.exe $(NOLOGO) /O2 /DNDEBUG
 CCDEBUG    = cl.exe $(NOLOGO) /Od /Gm /Zi /D_DEBUG /RTC1
-CFLAGS     = /I. /Isrc $(NOLOGO) /W3 /EHsc /c
+CFLAGS     = /Isrc $(NOLOGO) /W3 /EHsc /c
 CFLAGS     = $(CFLAGS) /DWIN32 /D_CRT_SECURE_NO_WARNINGS /DWIN32_LEAN_AND_MEAN
 LDFLAGS    = /LARGEADDRESSAWARE /MANIFEST /NXCOMPAT /DYNAMICBASE
 LDFLAGS    = $(LDFLAGS) $(PLATFORM_LDFLAGS)
@@ -53,6 +53,11 @@ OUTDIR = ..\obj\
 OUTDIR = $(OBJDIR)
 !ENDIF
 
+!IF "$(HAVE_AVX2)" == "1"
+CFLAGS = $(CFLAGS) /DWEBP_HAVE_AVX2
+AVX2_FLAGS = /arch:AVX2
+!ENDIF
+
 ##############################################################
 # Runtime library configuration
 !IF "$(RTLIBCFG)" == "static"
@@ -129,16 +134,12 @@ LIBWEBP_PDBNAME = $(DIROBJ)\$(LIBWEBP_BASENAME)_dll.pdb
 CFGSET = TRUE
 !ENDIF
 
-!IF "$(UNICODE)" == "1"
-CFLAGS = $(CFLAGS) /D_UNICODE /DUNICODE
-!ENDIF
-
 #######################
 # Usage
 #
 !IF "$(CFGSET)" == "FALSE"
 !MESSAGE Usage: nmake /f Makefile.vc [CFG=<config>]
-!MESSAGE .          [OBJDIR=<path>] [RTLIBCFG=<rtlib>] [UNICODE=1] [<target>]
+!MESSAGE .          [OBJDIR=<path>] [RTLIBCFG=<rtlib>] [<target>]
 !MESSAGE
 !MESSAGE where <config> is one of:
 !MESSAGE -  release-static                - release static library
@@ -154,7 +155,6 @@ CFLAGS = $(CFLAGS) /D_UNICODE /DUNICODE
 !MESSAGE - all                            - build (de)mux-based targets for CFG
 !MESSAGE - gif2webp                       - requires libgif & >= VS2013
 !MESSAGE - anim_diff                      - requires libgif & >= VS2013
-!MESSAGE - anim_dump
 !MESSAGE
 !MESSAGE RTLIBCFG controls the runtime library linkage - 'static' or 'dynamic'.
 !MESSAGE   'legacy' will produce a Windows 2000 compatible library.
@@ -226,21 +226,22 @@ DSP_DEC_OBJS = \
     $(DIROBJ)\dsp\upsampling_msa.obj \
     $(DIROBJ)\dsp\upsampling_neon.obj \
     $(DIROBJ)\dsp\upsampling_sse2.obj \
-    $(DIROBJ)\dsp\upsampling_sse41.obj \
     $(DIROBJ)\dsp\yuv.obj \
     $(DIROBJ)\dsp\yuv_mips32.obj \
     $(DIROBJ)\dsp\yuv_mips_dsp_r2.obj \
     $(DIROBJ)\dsp\yuv_neon.obj \
     $(DIROBJ)\dsp\yuv_sse2.obj \
-    $(DIROBJ)\dsp\yuv_sse41.obj \
 
 DSP_ENC_OBJS = \
+    $(DIROBJ)\dsp\argb.obj \
+    $(DIROBJ)\dsp\argb_mips_dsp_r2.obj \
+    $(DIROBJ)\dsp\argb_sse2.obj \
     $(DIROBJ)\dsp\cost.obj \
     $(DIROBJ)\dsp\cost_mips32.obj \
     $(DIROBJ)\dsp\cost_mips_dsp_r2.obj \
-    $(DIROBJ)\dsp\cost_neon.obj \
     $(DIROBJ)\dsp\cost_sse2.obj \
     $(DIROBJ)\dsp\enc.obj \
+    $(DIROBJ)\dsp\enc_avx2.obj \
     $(DIROBJ)\dsp\enc_mips32.obj \
     $(DIROBJ)\dsp\enc_mips_dsp_r2.obj \
     $(DIROBJ)\dsp\enc_msa.obj \
@@ -286,6 +287,7 @@ ENC_OBJS = \
     $(DIROBJ)\enc\backward_references_enc.obj \
     $(DIROBJ)\enc\config_enc.obj \
     $(DIROBJ)\enc\cost_enc.obj \
+    $(DIROBJ)\enc\delta_palettization_enc.obj \
     $(DIROBJ)\enc\filter_enc.obj \
     $(DIROBJ)\enc\frame_enc.obj \
     $(DIROBJ)\enc\histogram_enc.obj \
@@ -356,22 +358,15 @@ all: ex $(EXTRA_EXAMPLES)
 # C99 support which is only available from VS2013 onward.
 gif2webp: $(DIRBIN)\gif2webp.exe
 anim_diff: $(DIRBIN)\anim_diff.exe
-anim_dump: $(DIRBIN)\anim_dump.exe
 
 $(DIRBIN)\anim_diff.exe: $(DIROBJ)\examples\anim_diff.obj $(EX_ANIM_UTIL_OBJS)
 $(DIRBIN)\anim_diff.exe: $(EX_UTIL_OBJS) $(IMAGEIO_UTIL_OBJS)
 $(DIRBIN)\anim_diff.exe: $(EX_GIF_DEC_OBJS) $(LIBWEBPDEMUX) $(LIBWEBP)
-$(DIRBIN)\anim_dump.exe: $(DIROBJ)\examples\anim_dump.obj $(EX_ANIM_UTIL_OBJS)
-$(DIRBIN)\anim_dump.exe: $(EX_UTIL_OBJS) $(IMAGEIO_UTIL_OBJS)
-$(DIRBIN)\anim_dump.exe: $(EX_GIF_DEC_OBJS) $(LIBWEBPDEMUX) $(LIBWEBP)
-$(DIRBIN)\anim_dump.exe: $(IMAGEIO_ENC_OBJS)
 $(DIRBIN)\cwebp.exe: $(DIROBJ)\examples\cwebp.obj $(IMAGEIO_DEC_OBJS)
 $(DIRBIN)\cwebp.exe: $(IMAGEIO_UTIL_OBJS)
-$(DIRBIN)\cwebp.exe: $(LIBWEBPDEMUX)
 $(DIRBIN)\dwebp.exe: $(DIROBJ)\examples\dwebp.obj $(IMAGEIO_DEC_OBJS)
 $(DIRBIN)\dwebp.exe: $(IMAGEIO_ENC_OBJS)
 $(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)
@@ -384,24 +379,26 @@ $(DIRBIN)\webpmux.exe: $(DIROBJ)\examples\webpmux.obj $(LIBWEBPMUX)
 $(DIRBIN)\webpmux.exe: $(EX_UTIL_OBJS) $(IMAGEIO_UTIL_OBJS) $(LIBWEBP)
 $(DIRBIN)\img2webp.exe: $(DIROBJ)\examples\img2webp.obj $(LIBWEBPMUX)
 $(DIRBIN)\img2webp.exe: $(IMAGEIO_DEC_OBJS)
-$(DIRBIN)\img2webp.exe: $(EX_UTIL_OBJS) $(IMAGEIO_UTIL_OBJS)
-$(DIRBIN)\img2webp.exe: $(LIBWEBPDEMUX) $(LIBWEBP)
+$(DIRBIN)\img2webp.exe: $(EX_UTIL_OBJS) $(IMAGEIO_UTIL_OBJS) $(LIBWEBP)
 $(DIRBIN)\get_disto.exe: $(DIROBJ)\extras\get_disto.obj
-$(DIRBIN)\get_disto.exe: $(IMAGEIO_DEC_OBJS) $(IMAGEIO_UTIL_OBJS)
-$(DIRBIN)\get_disto.exe: $(LIBWEBPDEMUX) $(LIBWEBP)
+$(DIRBIN)\get_disto.exe: $(IMAGEIO_DEC_OBJS) $(IMAGEIO_UTIL_OBJS) $(LIBWEBP)
 $(DIRBIN)\webp_quality.exe: $(DIROBJ)\extras\webp_quality.obj
 $(DIRBIN)\webp_quality.exe: $(IMAGEIO_UTIL_OBJS)
 $(DIRBIN)\webp_quality.exe: $(EXTRAS_OBJS) $(LIBWEBP)
 $(DIRBIN)\webpinfo.exe: $(DIROBJ)\examples\webpinfo.obj
 $(DIRBIN)\webpinfo.exe: $(IMAGEIO_DEC_OBJS)
-$(DIRBIN)\webpinfo.exe: $(EX_UTIL_OBJS) $(IMAGEIO_UTIL_OBJS)
-$(DIRBIN)\webpinfo.exe: $(LIBWEBPDEMUX) $(LIBWEBP)
+$(DIRBIN)\webpinfo.exe: $(EX_UTIL_OBJS) $(IMAGEIO_UTIL_OBJS) $(LIBWEBP)
 
 $(OUT_EXAMPLES): $(EX_UTIL_OBJS) $(LIBWEBP)
 $(EX_UTIL_OBJS) $(IMAGEIO_UTIL_OBJS): $(OUTPUT_DIRS)
 $(IMAGEIO_DEC_OBJS) $(IMAGEIO_ENC_OBJS) $(EXTRAS_OBJS): $(OUTPUT_DIRS)
 !ENDIF  # ARCH == ARM
 
+experimental:
+	$(MAKE) /f Makefile.vc \
+	    CFG=$(CFG) \
+	    CFLAGS="$(CFLAGS) /DWEBP_EXPERIMENTAL_FEATURES" /$(MAKEFLAGS)
+
 $(LIBWEBPDECODER): $(LIBWEBPDECODER_OBJS)
 $(LIBWEBP): $(LIBWEBP_OBJS)
 $(LIBWEBPMUX): $(LIBWEBPMUX_OBJS)
@@ -447,18 +444,18 @@ $(OUTPUT_DIRS):
 $(DIROBJ)\$(DLLINC):
 	@echo #ifndef WEBP_DLL_H_ > $@
 	@echo #define WEBP_DLL_H_ >> $@
-	@echo #define WEBP_EXTERN __declspec(dllexport) >> $@
+	@echo #define WEBP_EXTERN(type) __declspec(dllexport) type >> $@
 	@echo #endif  /* WEBP_DLL_H_ */ >> $@
 
 .SUFFIXES: .c .obj .res .exe
 # File-specific flag builds. Note batch rules take precedence over wildcards,
 # so for now name each file individually.
+$(DIROBJ)\dsp\enc_avx2.obj: src\dsp\enc_avx2.c
+	$(CC) $(CFLAGS) $(AVX2_FLAGS) /Fd$(LIBWEBP_PDBNAME) /Fo$(DIROBJ)\dsp\ \
+	  src\dsp\$(@B).c
 $(DIROBJ)\examples\anim_diff.obj: examples\anim_diff.c
 	$(CC) $(CFLAGS) /DWEBP_HAVE_GIF /Fd$(LIBWEBP_PDBNAME) \
 	  /Fo$(DIROBJ)\examples\ examples\$(@B).c
-$(DIROBJ)\examples\anim_dump.obj: examples\anim_dump.c
-	$(CC) $(CFLAGS) /DWEBP_HAVE_GIF /Fd$(LIBWEBP_PDBNAME) \
-	  /Fo$(DIROBJ)\examples\ examples\$(@B).c
 $(DIROBJ)\examples\anim_util.obj: examples\anim_util.c
 	$(CC) $(CFLAGS) /DWEBP_HAVE_GIF /Fd$(LIBWEBP_PDBNAME) \
 	  /Fo$(DIROBJ)\examples\ examples\$(@B).c
@@ -488,18 +485,15 @@ $(DIROBJ)\examples\gifdec.obj: examples\gifdec.c
 {src\utils}.c{$(DIROBJ)\utils}.obj::
 	$(CC) $(CFLAGS) /Fd$(LIBWEBP_PDBNAME) /Fo$(DIROBJ)\utils\ $<
 
-LNKLIBS     = ole32.lib windowscodecs.lib shlwapi.lib
-!IF "$(UNICODE)" == "1"
-LNKLIBS     = $(LNKLIBS) Shell32.lib
-!ENDIF
-
 {$(DIROBJ)\examples}.obj{$(DIRBIN)}.exe:
-	$(LNKEXE) $(LDFLAGS) /OUT:$@ $** $(LNKLIBS)
+	$(LNKEXE) $(LDFLAGS) /OUT:$@ $** \
+	    ole32.lib windowscodecs.lib shlwapi.lib
 	$(MT) -manifest $@.manifest -outputresource:$@;1
 	del $@.manifest
 
 {$(DIROBJ)\extras}.obj{$(DIRBIN)}.exe:
-	$(LNKEXE) $(LDFLAGS) /OUT:$@ $** $(LNKLIBS)
+	$(LNKEXE) $(LDFLAGS) /OUT:$@ $** \
+	    ole32.lib windowscodecs.lib shlwapi.lib
 	$(MT) -manifest $@.manifest -outputresource:$@;1
 	del $@.manifest
 

NEWS

@@ -1,58 +1,3 @@
-- 7/4/2019: version 1.0.3
-  This is a binary compatible release.
-  * resize fixes for Nx1 sizes and the addition of non-opaque alpha values for
-    odd sizes (issues #418, #434)
-  * lossless encode/decode performance improvements
-  * lossy compression performance improvement at low quality levels with flat
-    content (issue #432)
-  * python swig files updated to support python 3
-  Tool updates:
-    vwebp will now preserve the aspect ratio of images that exceed monitor
-    resolution by scaling the image to fit (issue #433)
-
-- 1/14/2019: version 1.0.2
-  This is a binary compatible release.
-  * (Windows) unicode file support in the tools (linux and mac already had
-    support, issue #398)
-  * lossless encoder speedups
-  * lossy encoder speedup on ARM
-  * lossless multi-threaded security fix (chromium:917029)
-
-- 11/2/2018: version 1.0.1
-  This is a binary compatible release.
-  * lossless encoder speedups
-  * big-endian fix for alpha decoding (issue #393)
-  * gif2webp fix for loop count=65535 transcode (issue #382)
-  * further security related hardening in libwebp & libwebpmux
-    (issues #383, #385, #386, #387, #388, #391)
-    (oss-fuzz #9099, #9100, #9105, #9106, #9111, #9112, #9119, #9123, #9170,
-              #9178, #9179, #9183, #9186, #9191, #9364, #9417, #9496, #10349,
-              #10423, #10634, #10700, #10838, #10922, #11021, #11088, #11152)
-  * miscellaneous bug & build fixes (issues #381, #394, #396, #397, #400)
-
-- 4/2/2018: version 1.0.0
-  This is a binary compatible release.
-  * lossy encoder improvements to avoid chroma shifts in various circumstances
-    (issues #308, #340)
-  * big-endian fixes for decode, RGBA import and WebPPictureDistortion
-  Tool updates:
-    gifwebp, anim_diff - default duration behavior (<= 10ms) changed to match
-                         web browsers, transcoding tools (issue #379)
-    img2webp, webpmux - allow options to be passed in via a file (issue #355)
-
-- 11/24/2017: version 0.6.1
-  This is a binary compatible release.
-  * lossless performance and compression improvements + a new 'cruncher' mode
-    (-m 6 -q 100)
-  * ARM performance improvements with clang (15-20% w/ndk r15c, issue #339)
-  * webp-js: emscripten/webassembly based javascript decoder
-  * miscellaneous bug & build fixes (issue #329, #332, #343, #353, #360, #361,
-    #363)
-  Tool updates / additions:
-    added webpinfo - prints file format information (issue #330)
-    gif2webp - loop behavior modified to match Chrome M63+ (crbug.com/649264);
-               '-loop_compatibility' can be used for the old behavior
-
 - 1/26/2017: version 0.6.0
   * lossless performance and compression improvements
   * miscellaneous performance improvements (SSE2, NEON, MSA)

README

@@ -4,7 +4,7 @@
           \__\__/\____/\_____/__/ ____  ___
                 / _/ /    \    \ /  _ \/ _/
                /  \_/   / /   \ \   __/  \__
-               \____/____/\_____/_____/____/v1.0.3
+               \____/____/\_____/_____/____/v0.6.0
 
 Description:
 ============
@@ -113,8 +113,8 @@ make install
 
 CMake:
 ------
-With CMake, you can compile libwebp, cwebp, dwebp, gif2web, img2webp, webpinfo
-and the JS bindings.
+With CMake, you can compile libwebp, cwebp, dwebp, gif2web, img2webp and the
+JS bindings.
 
 Prerequisites:
 A compiler (e.g., gcc with autotools) and CMake.
@@ -136,8 +136,6 @@ cmake -DWEBP_BUILD_CWEBP=ON -DWEBP_BUILD_DWEBP=ON ../
 
 or through your favorite interface (like ccmake or cmake-qt-gui).
 
-Use option -DWEBP_UNICODE=ON for Unicode support on Windows (with chcp 65001).
-
 Finally, once installed, you can also use WebP in your CMake project by doing:
 
 find_package(WebP)
@@ -369,23 +367,6 @@ Use following options to convert into alternate image formats:
   -quiet ....... quiet mode, don't print anything
   -noasm ....... disable all assembly optimizations
 
-WebP file analysis tool:
-========================
-
-'webpinfo' can be used to print out the chunk level structure and bitstream
-header information of WebP files. It can also check if the files are of valid
-WebP format.
-
-Usage: webpinfo [options] in_files
-Note: there could be multiple input files;
-      options must come before input files.
-Options:
-  -version ........... Print version number and exit.
-  -quiet ............. Do not show chunk parsing information.
-  -diag .............. Show parsing error diagnosis.
-  -summary ........... Show chunk stats summary.
-  -bitstream_info .... Parse bitstream header.
-
 Visualization tool:
 ===================
 
@@ -404,14 +385,12 @@ Options are:
   -nofilter .... disable in-loop filtering
   -dither <int>  dithering strength (0..100), default=50
   -noalphadither disable alpha plane dithering
-  -usebgcolor .. display background color
   -mt .......... use multi-threading
   -info ........ print info
   -h ........... this help message
 
 Keyboard shortcuts:
   'c' ................ toggle use of color profile
-  'b' ................ toggle background color display
   'i' ................ overlay file information
   'd' ................ disable blending & disposal (debug)
   'q' / 'Q' / ESC .... quit
@@ -462,7 +441,6 @@ File-level options (only used at the start of compression):
  -mixed ............... use mixed lossy/lossless automatic mode
  -v ................... verbose mode
  -h ................... this help
- -version ............. print version number and exit
 
 Per-frame options (only used for subsequent images input):
  -d <int> ............. frame duration in ms (default: 100)
@@ -474,9 +452,6 @@ Per-frame options (only used for subsequent images input):
 example: img2webp -loop 2 in0.png -lossy in1.jpg
                   -d 80 in2.tiff -o out.webp
 
-Note: if a single file name is passed as the argument, the arguments will be
-tokenized from this file. The file name must not start with the character '-'.
-
 Animated GIF conversion:
 ========================
 Animated GIF files can be converted to WebP files with animation using the
@@ -502,8 +477,6 @@ Options:
   -metadata <string> ..... comma separated list of metadata to
                            copy from the input to the output if present
                            Valid values: all, none, icc, xmp (default)
-  -loop_compatibility .... use compatibility mode for Chrome
-                           version prior to M62 (inclusive)
   -mt .................... use multi-threading if available
 
   -version ............... print version number and exit
@@ -532,11 +505,6 @@ Options:
   -min_psnr <float> ... minimum per-frame PSNR
   -raw_comparison ..... if this flag is not used, RGB is
                         premultiplied before comparison
-  -max_diff <int> ..... maximum allowed difference per channel
-                        between corresponding pixels in subsequent
-                        frames
-  -h .................. this help
-  -version ............ print version number and exit
 
 Building:
 ---------
@@ -597,7 +565,7 @@ The encoding flow looks like:
   // Setup a config, starting form a preset and tuning some additional
   // parameters
   WebPConfig config;
-  if (!WebPConfigPreset(&config, WEBP_PRESET_PHOTO, quality_factor)) {
+  if (!WebPConfigPreset(&config, WEBP_PRESET_PHOTO, quality_factor))
     return 0;   // version error
   }
   // ... additional tuning

README.mux

@@ -1,7 +1,7 @@
           __   __  ____  ____  ____  __ __  _     __ __
          /  \\/  \/  _ \/  _ \/  _ \/  \  \/ \___/_ / _\
          \       /   __/  _  \   __/      /  /  (_/  /__
-          \__\__/\_____/_____/__/  \__//_/\_____/__/___/v1.0.3
+          \__\__/\_____/_____/__/  \__//_/\_____/__/___/v0.4.0
 
 
 Description:
@@ -33,7 +33,6 @@ Usage: webpmux -get GET_OPTIONS INPUT -o OUTPUT
        webpmux -info INPUT
        webpmux [-h|-help]
        webpmux -version
-       webpmux argument_file_name
 
 GET_OPTIONS:
  Extract relevant data:
@@ -93,9 +92,6 @@ INPUT & OUTPUT are in WebP format.
 Note: The nature of EXIF, XMP and ICC data is not checked and is assumed to be
 valid.
 
-Note: if a single file name is passed as the argument, the arguments will be
-tokenized from this file. The file name must not start with the character '-'.
-
 Visualization tool:
 ===================
 
@@ -211,35 +207,6 @@ Code example:
 For a detailed AnimEncoder API reference, please refer to the header file
 (src/webp/mux.h).
 
-AnimDecoder API:
-================
-This AnimDecoder API allows decoding (possibly) animated WebP images.
-
-Code Example:
-
-  WebPAnimDecoderOptions dec_options;
-  WebPAnimDecoderOptionsInit(&dec_options);
-  // Tune 'dec_options' as needed.
-  WebPAnimDecoder* dec = WebPAnimDecoderNew(webp_data, &dec_options);
-  WebPAnimInfo anim_info;
-  WebPAnimDecoderGetInfo(dec, &anim_info);
-  for (uint32_t i = 0; i < anim_info.loop_count; ++i) {
-    while (WebPAnimDecoderHasMoreFrames(dec)) {
-      uint8_t* buf;
-      int timestamp;
-      WebPAnimDecoderGetNext(dec, &buf, &timestamp);
-      // ... (Render 'buf' based on 'timestamp').
-      // ... (Do NOT free 'buf', as it is owned by 'dec').
-    }
-    WebPAnimDecoderReset(dec);
-  }
-  const WebPDemuxer* demuxer = WebPAnimDecoderGetDemuxer(dec);
-  // ... (Do something using 'demuxer'; e.g. get EXIF/XMP/ICC data).
-  WebPAnimDecoderDelete(dec);
-
-For a detailed AnimDecoder API reference, please refer to the header file
-(src/webp/demux.h).
-
 
 Bugs:
 =====

README.wasm

@@ -0,0 +1,91 @@
+Description:
+============
+
+This file describes the compilation of libwebp using portable intrinsics /
+WebAssembly (wasm) to native targets using clang and CMake.
+
+Prerequisites:
+==============
+
+- cmake 2.8+
+
+- clang 3.9+ for portable intrinsics support; as wasm progresses a tip of tree
+  build may be necessary.
+
+Building:
+=========
+
+ - configure the project with CMake using:
+
+ $ mkdir -p build && \
+   cd build && \
+   cmake -DWEBP_BUILD_DWEBP=1 -DCMAKE_C_COMPILER=clang -DWEBP_ENABLE_WASM=1 ../
+
+ - compile dwebp using 'make'.
+
+ - Note this currently generates native executables only and is incompatible
+   with -DWEBP_BUILD_WEBP_JS.
+
+Build options:
+==============
+
+- platform specific multiply high (mulhi) implementation, disabled by default.
+  arm: -DCMAKE_C_FLAGS='-DENABLE_NEON_BUILTIN_MULHI_INT16X8 ...'
+  x86: -DCMAKE_C_FLAGS='-DENABLE_X86_BUILTIN_MULHI_INT16X8 ...'
+
+Cross compilation:
+==================
+
+ - arm toolchains can be obtained from:
+   http://www.linaro.org/downloads/
+
+ - the android ndk can be obtained from:
+   https://developer.android.com/ndk/downloads/index.html
+
+armv7:
+------
+
+Android:
+ $ ./android-ndk-r15b/build/tools/make_standalone_toolchain.py \
+   --arch arm --api 24 --stl gnustl --install-dir /opt/android-arm-24
+ $ mkdir -p build && cd build
+ $ cmake ../libwebp \
+   -DWEBP_BUILD_DWEBP=1 \
+   -DCMAKE_C_COMPILER=/opt/android-arm-24/bin/clang \
+   -DCMAKE_PREFIX_PATH=/opt/android-arm-24/sysroot/usr/lib \
+   -DCMAKE_C_FLAGS=-fPIE \
+   -DCMAKE_EXE_LINKER_FLAGS=-Wl,-pie \
+   -DCMAKE_BUILD_TYPE=Release \
+   -DWEBP_ENABLE_WASM=1
+
+Linux:
+ $ gcc_arm=/opt/gcc-arm; target=arm-linux-gnueabihf
+ $ mkdir -p build && cd build
+ $ cmake ../libwebp -DWEBP_BUILD_DWEBP=1 -DWEBP_ENABLE_WASM=1 \
+   -DCMAKE_C_COMPILER=clang \
+   -DCMAKE_C_FLAGS="--target=$target --gcc-toolchain=$gcc_arm --sysroot=$gcc_arm/$target/libc -march=armv7-a -mfpu=neon" \
+   -DCMAKE_PREFIX_PATH=$gcc_arm/$target/libc/usr
+
+aarch64 / arm64:
+----------------
+
+Android:
+ $ ./android-ndk-r15b/build/tools/make_standalone_toolchain.py \
+   --arch arm64 --api 24 --stl gnustl --install-dir /opt/android-arm64-24
+ $ mkdir -p build && cd build
+ $ cmake ../libwebp \
+   -DWEBP_BUILD_DWEBP=1 \
+   -DCMAKE_C_COMPILER=/opt/android-arm64-24/bin/clang \
+   -DCMAKE_PREFIX_PATH=/opt/android-arm64-24/sysroot/usr/lib \
+   -DCMAKE_C_FLAGS=-fPIE \
+   -DCMAKE_EXE_LINKER_FLAGS=-Wl,-pie \
+   -DCMAKE_BUILD_TYPE=Release \
+   -DWEBP_ENABLE_WASM=1
+
+Linux:
+ $ gcc_arm=/opt/gcc-aarch64; target=aarch64-linux-gnu
+ $ mkdir -p build && cd build
+ $ cmake ../libwebp -DWEBP_BUILD_DWEBP=1 -DWEBP_ENABLE_WASM=1 \
+   -DCMAKE_C_COMPILER=clang \
+   -DCMAKE_C_FLAGS="--target=$target --gcc-toolchain=$gcc_arm --sysroot=$gcc_arm/$target/libc" \
+   -DCMAKE_PREFIX_PATH=$gcc_arm/$target/libc/usr

README.webp_js

@@ -17,10 +17,6 @@ using Emscripten and CMake.
 
  - make sure the file $EMSCRIPTEN/cmake/Modules/Platform/Emscripten.cmake is
    accessible. This is the toolchain file used by CMake to invoke Emscripten.
-   If $EMSCRIPTEN is unset search for Emscripten.cmake under $EMSDK and set
-   $EMSCRIPTEN accordingly, for example:
-   unix-like environments: export EMSCRIPTEN=$EMSDK/fastcomp/emscripten
-   windows: set EMSCRIPTEN=%EMSDK%\fastcomp\emscripten
 
  - configure the project 'WEBP_JS' with CMake using:
 
@@ -35,9 +31,13 @@ using Emscripten and CMake.
  - that's it! Upon completion, you should have the webp.js and
    webp.js.mem files generated.
 
+ - Note this generates both webp_js and webp_wasm without any SIMD enabled due
+   to bugs with this toolchain associated with the SSE2 code.
+   -DWEBP_ENABLE_WASM is currently meant to generate native (x86, arm)
+   executables (dwebp, cwebp) and is incompatible with -DWEBP_BUILD_WEBP_JS.
+
 The callable JavaScript function is WebPToSDL(), which decodes a raw WebP
-bitstream into a canvas. See webp_js/index.html for a simple usage sample
-(see below for instructions).
+bitstream into a canvas. See webp_js/index.html for a simple usage sample.
 
 Demo HTML page:
 ===============

build.gradle

@@ -82,14 +82,12 @@ model {
         }
       }
       // Check for NEON usage.
-      if (getTargetPlatform() == "arm") {
+      if (getTargetPlatform() == "arm" || getTargetPlatform() == "arm64") {
         NEON = "c.neon"
         cCompiler.define "HAVE_CPU_FEATURES_H"
       } else {
         NEON = "c"
       }
-
-      cCompiler.args "-I" + file(".").absolutePath
     }
     // Link to pthread for shared libraries.
     withType(SharedLibraryBinarySpec) {
@@ -122,6 +120,9 @@ model {
             include "alpha_processing_neon.$NEON"
             include "alpha_processing_sse2.c"
             include "alpha_processing_sse41.c"
+            include "argb.c"
+            include "argb_mips_dsp_r2.c"
+            include "argb_sse2.c"
             include "cpu.c"
             include "dec.c"
             include "dec_clip_tables.c"
@@ -152,13 +153,11 @@ model {
             include "upsampling_msa.c"
             include "upsampling_neon.$NEON"
             include "upsampling_sse2.c"
-            include "upsampling_sse41.c"
             include "yuv.c"
             include "yuv_mips32.c"
             include "yuv_mips_dsp_r2.c"
             include "yuv_neon.$NEON"
             include "yuv_sse2.c"
-            include "yuv_sse41.c"
             srcDir "src/utils"
             include "bit_reader_utils.c"
             include "color_cache_utils.c"
@@ -173,9 +172,9 @@ model {
             include "cost.c"
             include "cost_mips32.c"
             include "cost_mips_dsp_r2.c"
-            include "cost_neon.$NEON"
             include "cost_sse2.c"
             include "enc.c"
+            include "enc_avx2.c"
             include "enc_mips32.c"
             include "enc_mips_dsp_r2.c"
             include "enc_msa.c"
@@ -198,6 +197,7 @@ model {
             include "backward_references_enc.c"
             include "config_enc.c"
             include "cost_enc.c"
+            include "delta_palettization_enc.c"
             include "filter_enc.c"
             include "frame_enc.c"
             include "histogram_enc.c"
@@ -289,7 +289,6 @@ model {
     imagedec(NativeLibrarySpec) {
       binaries {
         all {
-          lib library: "webpdemux", linkage: "static"
           lib library: "webp", linkage: "static"
         }
       }
@@ -332,7 +331,6 @@ model {
           lib library: "example_util", linkage: "static"
           lib library: "imagedec", linkage: "static"
           lib library: "imageio_util", linkage: "static"
-          lib library: "webpdemux", linkage: "static"
           lib library: "webp", linkage: "static"
         }
       }
@@ -353,7 +351,6 @@ model {
           lib library: "imagedec", linkage: "static"
           lib library: "imageenc", linkage: "static"
           lib library: "imageio_util", linkage: "static"
-          lib library: "webpdemux", linkage: "static"
           lib library: "webp"
         }
       }
@@ -393,7 +390,6 @@ model {
           lib library: "imagedec", linkage: "static"
           lib library: "imageio_util", linkage: "static"
           lib library: "webpmux", linkage: "static"
-          lib library: "webpdemux", linkage: "static"
           lib library: "webp"
         }
       }

cmake/WebPConfig.cmake.in

@@ -1,10 +1,5 @@
-set(WebP_VERSION @PROJECT_VERSION@)
-set(WEBP_VERSION ${WebP_VERSION})
-
 @PACKAGE_INIT@
 
-include ("${CMAKE_CURRENT_LIST_DIR}/@PROJECT_NAME@Targets.cmake")
-
 set(WebP_INCLUDE_DIRS "webp")
 set(WEBP_INCLUDE_DIRS ${WebP_INCLUDE_DIRS})
 set(WebP_LIBRARIES "@INSTALLED_LIBRARIES@")

cmake/config.h.cmake

@@ -1,27 +1,33 @@
 # Generate the config.h to compile with specific intrinsics / libs.
 
-# Check for compiler options.
+## Check for compiler options.
 include(CheckCSourceCompiles)
 check_c_source_compiles("
     int main(void) {
       (void)__builtin_bswap16(0);
       return 0;
     }
-  " HAVE_BUILTIN_BSWAP16)
+  "
+  HAVE_BUILTIN_BSWAP16
+)
 check_c_source_compiles("
     int main(void) {
       (void)__builtin_bswap32(0);
       return 0;
     }
-  " HAVE_BUILTIN_BSWAP32)
+  "
+  HAVE_BUILTIN_BSWAP32
+)
 check_c_source_compiles("
     int main(void) {
       (void)__builtin_bswap64(0);
       return 0;
     }
-  " HAVE_BUILTIN_BSWAP64)
+  "
+  HAVE_BUILTIN_BSWAP64
+)
 
-# Check for libraries.
+## Check for libraries.
 find_package(Threads)
 if(Threads_FOUND)
   if(CMAKE_USE_PTHREADS_INIT)
@@ -34,7 +40,8 @@ if(Threads_FOUND)
           int attr = ${PTHREAD_TEST};
           return attr;
         }
-      " ${PTHREAD_TEST})
+      " ${PTHREAD_TEST}
+    )
   endforeach()
   list(APPEND WEBP_DEP_LIBRARIES ${CMAKE_THREAD_LIBS_INIT})
 endif()
@@ -44,20 +51,15 @@ set(WEBP_USE_THREAD ${Threads_FOUND})
 set(LT_OBJDIR ".libs/")
 
 # Only useful for vwebp, so useless for now.
-find_package(OpenGL)
-set(WEBP_HAVE_GL ${OPENGL_FOUND})
+# find_package(OpenGL)
+# set(WEBP_HAVE_GL ${OPENGL_FOUND})
+# set(WEBP_DEP_INCLUDE_DIRS ${WEBP_DEP_INCLUDE_DIRS} ${OPENGL_INCLUDE_DIRS})
+# set(WEBP_DEP_LIBRARIES ${WEBP_DEP_LIBRARIES} ${OPENGL_LIBRARIES})
 
-# Check if we need to link to the C math library. We do not look for it as it is
-# not found when cross-compiling, while it is here.
-check_c_source_compiles("
-    #include <math.h>
-    int main(int argc, char** argv) {
-      return (int)pow(argc, 2.5);
-    }
-  " HAVE_MATH_LIBRARY)
-if(NOT HAVE_MATH_LIBRARY)
-  message(STATUS "Adding -lm flag.")
-  list(APPEND WEBP_DEP_LIBRARIES m)
+# Find the standard C math library.
+find_library(MATH_LIBRARY NAMES m)
+if(MATH_LIBRARY)
+  list(APPEND WEBP_DEP_LIBRARIES ${MATH_LIBRARY})
 endif()
 
 # Find the standard image libraries.
@@ -68,45 +70,21 @@ foreach(I_LIB PNG JPEG TIFF)
   set(WEBP_HAVE_${I_LIB} ${${I_LIB}_FOUND})
   if(${I_LIB}_FOUND)
     list(APPEND WEBP_DEP_IMG_LIBRARIES ${${I_LIB}_LIBRARIES})
-    list(APPEND WEBP_DEP_IMG_INCLUDE_DIRS ${${I_LIB}_INCLUDE_DIR}
-                ${${I_LIB}_INCLUDE_DIRS})
+    list(APPEND WEBP_DEP_IMG_INCLUDE_DIRS ${${I_LIB}_INCLUDE_DIRS})
   endif()
 endforeach()
-if(WEBP_DEP_IMG_INCLUDE_DIRS)
-  list(REMOVE_DUPLICATES WEBP_DEP_IMG_INCLUDE_DIRS)
-endif()
 
 # GIF detection, gifdec isn't part of the imageio lib.
-include(CMakePushCheckState)
 set(WEBP_DEP_GIF_LIBRARIES)
 set(WEBP_DEP_GIF_INCLUDE_DIRS)
 find_package(GIF)
 set(WEBP_HAVE_GIF ${GIF_FOUND})
 if(GIF_FOUND)
-  # GIF find_package only locates the header and library, it doesn't fail
-  # compile tests when detecting the version, but falls back to 3 (as of at
-  # least cmake 3.7.2). Make sure the library links to avoid incorrect detection
-  # when cross compiling.
-  cmake_push_check_state()
-  set(CMAKE_REQUIRED_LIBRARIES ${GIF_LIBRARIES})
-  set(CMAKE_REQUIRED_INCLUDES ${GIF_INCLUDE_DIR})
-  check_c_source_compiles("
-      #include <gif_lib.h>
-      int main(void) {
-        (void)DGifOpenFileHandle;
-        return 0;
-      }
-      " GIF_COMPILES)
-  cmake_pop_check_state()
-  if(GIF_COMPILES)
-    list(APPEND WEBP_DEP_GIF_LIBRARIES ${GIF_LIBRARIES})
-    list(APPEND WEBP_DEP_GIF_INCLUDE_DIRS ${GIF_INCLUDE_DIR})
-  else()
-    unset(GIF_FOUND)
-  endif()
+  list(APPEND WEBP_DEP_GIF_LIBRARIES ${GIF_LIBRARIES})
+  list(APPEND WEBP_DEP_GIF_INCLUDE_DIRS ${GIF_INCLUDE_DIR})
 endif()
 
-# Check for specific headers.
+## Check for specific headers.
 include(CheckIncludeFiles)
 check_include_files("stdlib.h;stdarg.h;string.h;float.h" STDC_HEADERS)
 check_include_files(dlfcn.h HAVE_DLFCN_H)
@@ -128,32 +106,25 @@ check_include_files(windows.h HAVE_WINDOWS_H)
 
 # Windows specifics
 if(HAVE_WINCODEC_H)
-  list(APPEND WEBP_DEP_LIBRARIES
-              shlwapi
-              ole32
-              windowscodecs)
+  list(APPEND WEBP_DEP_LIBRARIES shlwapi ole32 windowscodecs)
 endif()
 
-# Check for SIMD extensions.
+## Check for SIMD extensions.
 include(${CMAKE_CURRENT_LIST_DIR}/cpu.cmake)
 
-# Define extra info.
+## Define extra info.
 set(PACKAGE ${PROJECT_NAME})
 set(PACKAGE_NAME ${PROJECT_NAME})
 
 # Read from configure.ac.
 file(READ ${CMAKE_CURRENT_SOURCE_DIR}/configure.ac CONFIGURE_AC)
-string(REGEX MATCHALL
-             "\\[([0-9a-z\\.:/]*)\\]"
-             CONFIGURE_AC_PACKAGE_INFO
-             ${CONFIGURE_AC})
+string(REGEX MATCHALL "\\[([0-9a-z\\.:/]*)\\]"
+  CONFIGURE_AC_PACKAGE_INFO ${CONFIGURE_AC}
+)
 function(strip_bracket VAR)
   string(LENGTH ${${VAR}} TMP_LEN)
   math(EXPR TMP_LEN ${TMP_LEN}-2)
-  string(SUBSTRING ${${VAR}}
-                   1
-                   ${TMP_LEN}
-                   TMP_SUB)
+  string(SUBSTRING ${${VAR}} 1 ${TMP_LEN} TMP_SUB)
   set(${VAR} ${TMP_SUB} PARENT_SCOPE)
 endfunction()
 
@@ -168,3 +139,13 @@ strip_bracket(PACKAGE_URL)
 set(PACKAGE_STRING "${PACKAGE_NAME} ${PACKAGE_VERSION}")
 set(PACKAGE_TARNAME ${PACKAGE_NAME})
 set(VERSION ${PACKAGE_VERSION})
+
+## Generate the config.h header.
+configure_file(${CMAKE_CURRENT_LIST_DIR}/config.h.in
+  ${CMAKE_CURRENT_BINARY_DIR}/include/webp/config.h)
+add_definitions(-DHAVE_CONFIG_H)
+# The webp folder is included as we reference config.h as
+# ../webp/config.h or webp/config.h
+include_directories(${CMAKE_CURRENT_BINARY_DIR}/include
+  ${CMAKE_CURRENT_BINARY_DIR}/include/webp
+)

cmake/config.h.in

@@ -13,9 +13,6 @@
 /* Set to 1 if __builtin_bswap64 is available */
 #cmakedefine HAVE_BUILTIN_BSWAP64 1
 
-/* Define to 1 if you have the <cpu-features.h> header file. */
-#cmakedefine HAVE_CPU_FEATURES_H 1
-
 /* Define to 1 if you have the <dlfcn.h> header file. */
 #cmakedefine HAVE_DLFCN_H 1
 
@@ -103,6 +100,12 @@
 /* Version number of package */
 #cmakedefine VERSION "@VERSION@"
 
+/* Enable experimental code */
+#cmakedefine WEBP_EXPERIMENTAL_FEATURES 1
+
+/* Set to 1 if AVX2 is supported */
+#cmakedefine WEBP_HAVE_AVX2 1
+
 /* Set to 1 if GIF library is installed */
 #cmakedefine WEBP_HAVE_GIF 1
 
@@ -112,19 +115,9 @@
 /* Set to 1 if JPEG library is installed */
 #cmakedefine WEBP_HAVE_JPEG 1
 
-/* Set to 1 if NEON is supported */
-#cmakedefine WEBP_HAVE_NEON
-
-/* Set to 1 if runtime detection of NEON is enabled */
-/* TODO: handle properly in CMake */
-#cmakedefine WEBP_HAVE_NEON_RTCD
-
 /* Set to 1 if PNG library is installed */
 #cmakedefine WEBP_HAVE_PNG 1
 
-/* Set to 1 if SDL library is installed */
-#cmakedefine WEBP_HAVE_SDL 1
-
 /* Set to 1 if SSE2 is supported */
 #cmakedefine WEBP_HAVE_SSE2 1
 
@@ -134,9 +127,6 @@
 /* Set to 1 if TIFF library is installed */
 #cmakedefine WEBP_HAVE_TIFF 1
 
-/* Enable near lossless encoding */
-#cmakedefine WEBP_NEAR_LOSSLESS 1
-
 /* Undefine this to disable thread support. */
 #cmakedefine WEBP_USE_THREAD 1
 

cmake/cpu.cmake

@@ -1,5 +1,4 @@
-# Check for SIMD extensions.
-include(CMakePushCheckState)
+## Check for SIMD extensions.
 
 function(webp_check_compiler_flag WEBP_SIMD_FLAG ENABLE_SIMD)
   if(NOT ENABLE_SIMD)
@@ -8,8 +7,6 @@ function(webp_check_compiler_flag WEBP_SIMD_FLAG ENABLE_SIMD)
     return()
   endif()
   unset(WEBP_HAVE_FLAG_${WEBP_SIMD_FLAG} CACHE)
-  cmake_push_check_state()
-  set(CMAKE_REQUIRED_INCLUDES ${CMAKE_CURRENT_SOURCE_DIR})
   check_c_source_compiles("
       #include \"${CMAKE_CURRENT_LIST_DIR}/../src/dsp/dsp.h\"
       int main(void) {
@@ -18,8 +15,8 @@ function(webp_check_compiler_flag WEBP_SIMD_FLAG ENABLE_SIMD)
         #endif
         return 0;
       }
-    " WEBP_HAVE_FLAG_${WEBP_SIMD_FLAG})
-  cmake_pop_check_state()
+    " WEBP_HAVE_FLAG_${WEBP_SIMD_FLAG}
+  )
   if(WEBP_HAVE_FLAG_${WEBP_SIMD_FLAG})
     set(WEBP_HAVE_${WEBP_SIMD_FLAG} 1 PARENT_SCOPE)
   else()
@@ -28,18 +25,16 @@ 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_FILE_EXTENSIONS
-    "_sse41.c;_sse2.c;_mips32.c;_mips_dsp_r2.c;_neon.c;_msa.c")
+set(WEBP_SIMD_FLAGS "SSE2;SSE41;AVX2;MIPS32;MIPS_DSP_R2;NEON;MSA")
+set(WEBP_SIMD_FILE_EXTENSIONS "_sse2.c;_sse41.c;_avx2.c;_mips32.c;_mips_dsp_r2.c;_neon.c;_msa.c")
 if(MSVC)
-  # MSVC does not have a SSE4 flag but AVX support implies SSE4 support.
-  set(SIMD_ENABLE_FLAGS "/arch:AVX;/arch:SSE2;;;;")
+  # MSVC does not have a SSE4 flag but AVX2 support implies
+  # SSE4 support.
+  set(SIMD_ENABLE_FLAGS "/arch:SSE2;/arch:AVX2;/arch:AVX2;;;;")
   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 "-msse2;-msse4.1;-mavx2;-mips32;-mdspr2;-mfpu=neon;-mmsa")
+  set(SIMD_DISABLE_FLAGS "-mno-sse2;-mno-sse4.1;-mno-avx2;;-mno-dspr2;;-mno-msa")
 endif()
 
 set(WEBP_SIMD_FILES_TO_NOT_INCLUDE)
@@ -48,16 +43,16 @@ set(WEBP_SIMD_FLAGS_TO_INCLUDE)
 
 if(${ANDROID})
   if(${ANDROID_ABI} STREQUAL "armeabi-v7a")
-    # This is because Android studio uses the configuration "-march=armv7-a
-    # -mfloat-abi=softfp -mfpu=vfpv3-d16" that does not trigger neon
-    # optimizations but should (as this configuration does not exist anymore).
+    # This is because Android studio uses the configuration
+    # "-march=armv7-a -mfloat-abi=softfp -mfpu=vfpv3-d16"
+    # that does not trigger neon optimizations but should
+    # (as this configuration does not exist anymore).
     set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -mfpu=neon ")
   endif()
 endif()
 
 list(LENGTH WEBP_SIMD_FLAGS WEBP_SIMD_FLAGS_LENGTH)
 math(EXPR WEBP_SIMD_FLAGS_RANGE "${WEBP_SIMD_FLAGS_LENGTH} - 1")
-unset(HIGHEST_SSE_FLAG)
 
 foreach(I_SIMD RANGE ${WEBP_SIMD_FLAGS_RANGE})
   list(GET WEBP_SIMD_FLAGS ${I_SIMD} WEBP_SIMD_FLAG)
@@ -65,7 +60,6 @@ foreach(I_SIMD RANGE ${WEBP_SIMD_FLAGS_RANGE})
   # First try with no extra flag added as the compiler might have default flags
   # (especially on Android).
   unset(WEBP_HAVE_${WEBP_SIMD_FLAG} CACHE)
-  cmake_push_check_state()
   set(CMAKE_REQUIRED_FLAGS)
   webp_check_compiler_flag(${WEBP_SIMD_FLAG} ${WEBP_ENABLE_SIMD})
   if(NOT WEBP_HAVE_${WEBP_SIMD_FLAG})
@@ -73,36 +67,29 @@ foreach(I_SIMD RANGE ${WEBP_SIMD_FLAGS_RANGE})
     set(CMAKE_REQUIRED_FLAGS ${SIMD_COMPILE_FLAG})
     webp_check_compiler_flag(${WEBP_SIMD_FLAG} ${WEBP_ENABLE_SIMD})
   else()
-    if(MSVC)
-      list(GET SIMD_ENABLE_FLAGS ${I_SIMD} SIMD_COMPILE_FLAG)
-    else()
-      set(SIMD_COMPILE_FLAG " ")
-    endif()
+    set(SIMD_COMPILE_FLAG " ")
   endif()
   # Check which files we should include or not.
   list(GET WEBP_SIMD_FILE_EXTENSIONS ${I_SIMD} WEBP_SIMD_FILE_EXTENSION)
   file(GLOB SIMD_FILES "${CMAKE_CURRENT_LIST_DIR}/../"
-            "src/dsp/*${WEBP_SIMD_FILE_EXTENSION}")
+    "src/dsp/*${WEBP_SIMD_FILE_EXTENSION}"
+  )
   if(WEBP_HAVE_${WEBP_SIMD_FLAG})
-    if(${I_SIMD} LESS 2 AND NOT HIGHEST_SSE_FLAG)
-      set(HIGHEST_SSE_FLAG ${SIMD_COMPILE_FLAG})
-    endif()
     # Memorize the file and flags.
     foreach(FILE ${SIMD_FILES})
       list(APPEND WEBP_SIMD_FILES_TO_INCLUDE ${FILE})
-      if(${I_SIMD} LESS 2)
-        list(APPEND WEBP_SIMD_FLAGS_TO_INCLUDE ${HIGHEST_SSE_FLAG})
-      else()
-        list(APPEND WEBP_SIMD_FLAGS_TO_INCLUDE ${SIMD_COMPILE_FLAG})
-      endif()
+      list(APPEND WEBP_SIMD_FLAGS_TO_INCLUDE ${SIMD_COMPILE_FLAG})
     endforeach()
   else()
     # Remove the file from the list.
     foreach(FILE ${SIMD_FILES})
       list(APPEND WEBP_SIMD_FILES_NOT_TO_INCLUDE ${FILE})
     endforeach()
-    # Explicitly disable SIMD.
-    if(SIMD_DISABLE_FLAGS)
+    # Explicitly disable SIMD. Avoid this with WASM to avoid an ICE with clang:
+    # https://bugs.chromium.org/p/webp/issues/detail?id=350
+    # WASM overrides the native SIMD so building it in is harmless aside from
+    # binary size.
+    if(NOT WEBP_ENABLE_WASM AND SIMD_DISABLE_FLAGS)
       list(GET SIMD_DISABLE_FLAGS ${I_SIMD} SIMD_COMPILE_FLAG)
       include(CheckCCompilerFlag)
       if(SIMD_COMPILE_FLAG)
@@ -117,12 +104,11 @@ foreach(I_SIMD RANGE ${WEBP_SIMD_FLAGS_RANGE})
             set(COMMON_PATTERNS)
           endif()
           set(CMAKE_REQUIRED_DEFINITIONS ${SIMD_COMPILE_FLAG})
-          check_c_source_compiles("int main(void) {return 0;}"
-                                  FLAG_${SIMD_COMPILE_FLAG}
-                                  FAIL_REGEX
-                                  "warning: argument unused during compilation:"
-                                  ${COMMON_PATTERNS})
-          if(NOT FLAG_${SIMD_COMPILE_FLAG})
+          check_c_source_compiles("int main(void) {return 0;}" FLAG2
+            FAIL_REGEX "warning: argument unused during compilation:"
+            ${COMMON_PATTERNS}
+          )
+          if(NOT FLAG2)
             unset(HAS_COMPILE_FLAG CACHE)
           endif()
         endif()
@@ -132,5 +118,14 @@ foreach(I_SIMD RANGE ${WEBP_SIMD_FLAGS_RANGE})
       endif()
     endif()
   endif()
-  cmake_pop_check_state()
 endforeach()
+
+## Add *_wasm.c files if enabled.
+if(WEBP_ENABLE_WASM)
+  file(GLOB SIMD_FILES "${CMAKE_CURRENT_LIST_DIR}/../"
+    "src/dsp/*_wasm.c"
+  )
+  foreach(FILE ${SIMD_FILES})
+    list(APPEND WEBP_SIMD_FILES_TO_INCLUDE ${FILE})
+  endforeach()
+endif()

codereview.settings

@@ -1,4 +0,0 @@
-# This file is used by git cl to get repository specific information.
-GERRIT_HOST: True
-CODE_REVIEW_SERVER: chromium-review.googlesource.com
-GERRIT_SQUASH_UPLOADS: False

configure.ac

@@ -1,4 +1,4 @@
-AC_INIT([libwebp], [1.0.3],
+AC_INIT([libwebp], [0.6.0],
         [https://bugs.chromium.org/p/webp],,
         [http://developers.google.com/speed/webp])
 AC_CANONICAL_HOST
@@ -79,7 +79,6 @@ TEST_AND_ADD_CFLAGS([AM_CFLAGS], [-Wold-style-definition])
 TEST_AND_ADD_CFLAGS([AM_CFLAGS], [-Wparentheses-equality])
 TEST_AND_ADD_CFLAGS([AM_CFLAGS], [-Wshadow])
 TEST_AND_ADD_CFLAGS([AM_CFLAGS], [-Wshorten-64-to-32])
-TEST_AND_ADD_CFLAGS([AM_CFLAGS], [-Wundef])
 TEST_AND_ADD_CFLAGS([AM_CFLAGS], [-Wunreachable-code])
 TEST_AND_ADD_CFLAGS([AM_CFLAGS], [-Wunused-but-set-variable])
 TEST_AND_ADD_CFLAGS([AM_CFLAGS], [-Wunused])
@@ -122,6 +121,31 @@ 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$enable_sse2" != "xno"], [
+  AVX2_CFLAGS="$INTRINSICS_CFLAGS $AVX2_FLAGS"
+  TEST_AND_ADD_CFLAGS([AVX2_FLAGS], [-mavx2])
+  AS_IF([test -n "$AVX2_FLAGS"], [
+    SAVED_CFLAGS=$CFLAGS
+    CFLAGS="$CFLAGS $AVX2_FLAGS"
+    AC_CHECK_HEADER([immintrin.h],
+                    [AC_DEFINE(WEBP_HAVE_AVX2, [1],
+                     [Set to 1 if AVX2 is supported])],
+                    [AVX2_FLAGS=""],
+                    dnl it's illegal to directly include avx2intrin.h, but it's
+                    dnl included conditionally in immintrin.h, tricky!
+                    [#ifndef __AVX2__
+                     #error avx2 is not enabled
+                     #endif
+                    ])
+    CFLAGS=$SAVED_CFLAGS])
+  AC_SUBST([AVX2_FLAGS])])
+
 AC_ARG_ENABLE([sse4.1],
               AS_HELP_STRING([--disable-sse4.1],
                              [Disable detection of SSE4.1 support
@@ -322,8 +346,6 @@ AS_IF([test "x$enable_gl" != "xno"], [
       # override with --with-gl*
       glut_cflags="$glut_cflags|-framework GLUT -framework OpenGL"
       glut_ldflags="$glut_ldflags|-framework GLUT -framework OpenGL"
-      # quiet deprecation warnings for glut
-      TEST_AND_ADD_CFLAGS([AM_CFLAGS], [-Wno-deprecated-declarations])
       ;;
   esac
 
@@ -420,54 +442,31 @@ AC_ARG_ENABLE([sdl],
                               @<:@default=auto@:>@]))
 AS_IF([test "x$enable_sdl" != "xno"], [
   CLEAR_LIBVARS([SDL])
-  AC_PATH_PROGS([LIBSDL_CONFIG], [sdl-config])
-  if test -n "$LIBSDL_CONFIG"; then
-    SDL_INCLUDES=`$LIBSDL_CONFIG --cflags`
-    SDL_LIBS="`$LIBSDL_CONFIG --libs`"
-  fi
-
   WITHLIB_OPTION([sdl], [SDL])
 
-  sdl_header="no"
+  $sdl_header = "no";
   LIBCHECK_PROLOGUE([SDL])
-  AC_CHECK_HEADER([SDL/SDL.h], [sdl_header="SDL/SDL.h"],
+  AC_CHECK_HEADER([SDL/SDL.h], [sdl_header="SDL_SDL.h"],
                   [AC_CHECK_HEADER([SDL.h], [sdl_header="SDL.h"],
                   [AC_MSG_WARN(SDL library not available - no sdl.h)])])
-  if test x"$sdl_header" != "xno"; then
-    AC_LANG_PUSH(C)
-    SDL_SAVED_LIBS="$LIBS"
-    for lib in "" "-lSDL" "-lSDLmain -lSDL"; do
-      LIBS="$SDL_SAVED_LIBS $lib"
-      # Perform a full link to ensure SDL_main is resolved if needed.
-      AC_LINK_IFELSE(
-        [AC_LANG_SOURCE([
-           #include <$sdl_header>
-           int main(int argc, char** argv) {
-             SDL_Init(0);
-             return 0;
-           }])],
-        [SDL_LIBS="$LDFLAGS $LIBS"
-         SDL_INCLUDES="$SDL_INCLUDES -DWEBP_HAVE_SDL"
-         AC_DEFINE(WEBP_HAVE_SDL, [1],
-                   [Set to 1 if SDL library is installed])
-         sdl_support=yes]
-      )
-      if test x"$sdl_support" = "xyes"; then
-        break
-      fi
-    done
-    # LIBS is restored by LIBCHECK_EPILOGUE
-    AC_LANG_POP
-    if test x"$sdl_header" = "xSDL.h"; then
+  if test x"$sdl_header" != "xno" ; then
+    AC_CHECK_LIB(SDL, SDL_Init,
+                 [SDL_LIBS="-lSDL"
+                  SDL_INCLUDES="-DWEBP_HAVE_SDL"
+                  AC_DEFINE(WEBP_HAVE_SDL, [1],
+                            [Set to 1 if SDL library is installed])
+                  sdl_support=yes
+                 ],
+                 AC_MSG_WARN(Optional SDL library not found),
+                 [$MATH_LIBS]),
+    if test x"$sdl_header" == "xSDL.h" ; then
       SDL_INCLUDES="$SDL_INCLUDES -DWEBP_HAVE_JUST_SDL_H"
     fi
   fi
   LIBCHECK_EPILOGUE([SDL])
 
-  if test x"$sdl_support" = "xyes"; then
+  if test "$sdl_support" = "yes" ; then
     build_vwebp_sdl=yes
-  else
-    AC_MSG_WARN(Optional SDL library not found)
   fi
 ])
 
@@ -590,7 +589,7 @@ AS_IF([test "x$enable_gif" != "xno"], [
 
   if test "$gif_support" = "yes" -a \
           "$enable_libwebpdemux" = "yes"; then
-    build_anim_diff=yes
+    build_animdiff=yes
   fi
 
   if test "$gif_support" = "yes" -a \
@@ -598,10 +597,10 @@ AS_IF([test "x$enable_gif" != "xno"], [
     build_gif2webp=yes
   fi
 ])
-AM_CONDITIONAL([BUILD_ANIMDIFF], [test "${build_anim_diff}" = "yes"])
+AM_CONDITIONAL([BUILD_ANIMDIFF], [test "${build_animdiff}" = "yes"])
 AM_CONDITIONAL([BUILD_GIF2WEBP], [test "${build_gif2webp}" = "yes"])
 
-if test "$enable_libwebpdemux" = "yes" -a "$enable_libwebpmux" = "yes"; then
+if test "$enable_libwebpmux" = "yes"; then
   build_img2webp=yes
 fi
 AM_CONDITIONAL([BUILD_IMG2WEBP], [test "${build_img2webp}" = "yes"])
@@ -663,7 +662,7 @@ if test "$enable_wic" = "yes"; then
 fi
 esac
 
-dnl === If --enable-swap-16bit-csp is defined, add -DWEBP_SWAP_16BIT_CSP=1
+dnl === If --enable-swap-16bit-csp is defined, add -DWEBP_SWAP_16BIT_CSP
 
 USE_SWAP_16BIT_CSP=""
 AC_MSG_CHECKING(if --enable-swap-16bit-csp option is specified)
@@ -671,25 +670,23 @@ AC_ARG_ENABLE([swap-16bit-csp],
               AS_HELP_STRING([--enable-swap-16bit-csp],
                              [Enable byte swap for 16 bit colorspaces]))
 if test "$enable_swap_16bit_csp" = "yes"; then
-  USE_SWAP_16BIT_CSP="-DWEBP_SWAP_16BIT_CSP=1"
+  USE_SWAP_16BIT_CSP="-DWEBP_SWAP_16BIT_CSP"
 fi
 AC_MSG_RESULT(${enable_swap_16bit_csp-no})
 AC_SUBST(USE_SWAP_16BIT_CSP)
 
-dnl === If --disable-near-lossless is defined, add -DWEBP_NEAR_LOSSLESS=0
+dnl === If --enable-experimental is defined, add -DWEBP_EXPERIMENTAL_FEATURES
 
-AC_DEFINE(WEBP_NEAR_LOSSLESS, [1], [Enable near lossless encoding])
-AC_MSG_CHECKING(if --disable-near-lossless option is specified)
-AC_ARG_ENABLE([near_lossless],
-              AS_HELP_STRING([--disable-near-lossless],
-                             [Disable near lossless encoding]),
-              [], [enable_near_lossless=yes])
-if test "$enable_near_lossless" = "no"; then
-  AC_DEFINE(WEBP_NEAR_LOSSLESS, [0], [Enable near lossless encoding])
-  AC_MSG_RESULT([yes])
-else
-  AC_MSG_RESULT([no])
+USE_EXPERIMENTAL_CODE=""
+AC_MSG_CHECKING(if --enable-experimental option is specified)
+AC_ARG_ENABLE([experimental], AS_HELP_STRING([--enable-experimental],
+                                             [Activate experimental features]))
+if test "$enable_experimental" = "yes"; then
+  AC_DEFINE(WEBP_EXPERIMENTAL_FEATURES, [1], [Enable experimental code])
+  USE_EXPERIMENTAL_CODE="-DWEBP_EXPERIMENTAL_FEATURES"
 fi
+AC_MSG_RESULT(${enable_experimental-no})
+AC_SUBST(USE_EXPERIMENTAL_CODE)
 
 dnl === Check whether libwebpmux should be built
 AC_MSG_CHECKING(whether libwebpmux is to be built)
@@ -697,16 +694,15 @@ AC_ARG_ENABLE([libwebpmux],
               AS_HELP_STRING([--enable-libwebpmux],
                              [Build libwebpmux @<:@default=no@:>@]))
 AC_MSG_RESULT(${enable_libwebpmux-no})
-AM_CONDITIONAL([BUILD_MUX], [test "$enable_libwebpmux" = "yes"])
+AM_CONDITIONAL([WANT_MUX], [test "$enable_libwebpmux" = "yes"])
 
 dnl === Check whether libwebpdemux should be built
 AC_MSG_CHECKING(whether libwebpdemux is to be built)
 AC_ARG_ENABLE([libwebpdemux],
-              AS_HELP_STRING([--disable-libwebpdemux],
-                             [Disable libwebpdemux @<:@default=no@:>@]),
-              [], [enable_libwebpdemux=yes])
+              AS_HELP_STRING([--enable-libwebpdemux],
+                             [Build libwebpdemux @<:@default=no@:>@]))
 AC_MSG_RESULT(${enable_libwebpdemux-no})
-AM_CONDITIONAL([BUILD_DEMUX], [test "$enable_libwebpdemux" = "yes"])
+AM_CONDITIONAL([WANT_DEMUX], [test "$enable_libwebpdemux" = "yes"])
 
 dnl === Check whether decoder library should be built.
 AC_MSG_CHECKING(whether decoder library is to be built)
@@ -722,7 +718,7 @@ AC_ARG_ENABLE([libwebpextras],
               AS_HELP_STRING([--enable-libwebpextras],
                              [Build libwebpextras @<:@default=no@:>@]))
 AC_MSG_RESULT(${enable_libwebpextras-no})
-AM_CONDITIONAL([BUILD_EXTRAS], [test "$enable_libwebpextras" = "yes"])
+AM_CONDITIONAL([WANT_EXTRAS], [test "$enable_libwebpextras" = "yes"])
 
 dnl =========================
 
@@ -753,20 +749,20 @@ libwebpmux: ${enable_libwebpmux-no}
 libwebpextras: ${enable_libwebpextras-no}
 
 Tools:
-cwebp : ${enable_libwebpdemux-no}
+cwebp : yes
   Input format support
   ====================
   JPEG : ${jpeg_support-no}
   PNG  : ${png_support-no}
   TIFF : ${tiff_support-no}
   WIC  : ${wic_support-no}
-dwebp : ${enable_libwebpdemux-no}
+dwebp : yes
   Output format support
   =====================
   PNG  : ${png_support-no}
   WIC  : ${wic_support-no}
 GIF support : ${gif_support-no}
-anim_diff   : ${build_anim_diff-no}
+anim_diff   : ${build_animdiff-no}
 gif2webp    : ${build_gif2webp-no}
 img2webp    : ${build_img2webp-no}
 webpmux     : ${enable_libwebpmux-no}

doc/webp-container-spec.txt

@@ -446,9 +446,8 @@ Frame Height Minus One: 24 bits (_uint24_)
 Frame Duration: 24 bits (_uint24_)
 
 : The time to wait before displaying the next frame, in 1 millisecond units.
-  Note the interpretation of frame duration of 0 (and often <= 10) is
-  implementation defined. Many tools and browsers assign a minimum duration
-  similar to GIF.
+  In particular, frame duration of 0 is useful when one wants to update
+  multiple areas of the canvas at once during the animation.
 
 Reserved: 6 bits
 

examples/Android.mk

@@ -26,7 +26,8 @@ LOCAL_SRC_FILES := \
     cwebp.c \
 
 LOCAL_CFLAGS := $(WEBP_CFLAGS)
-LOCAL_STATIC_LIBRARIES := example_util imageio_util imagedec webpdemux webp
+LOCAL_C_INCLUDES := $(LOCAL_PATH)/../src
+LOCAL_STATIC_LIBRARIES := example_util imageio_util imagedec webp
 
 LOCAL_MODULE := cwebp
 
@@ -41,7 +42,9 @@ LOCAL_SRC_FILES := \
     dwebp.c \
 
 LOCAL_CFLAGS := $(WEBP_CFLAGS)
-LOCAL_STATIC_LIBRARIES := example_util imagedec imageenc webpdemux webp
+LOCAL_C_INCLUDES := $(LOCAL_PATH)/../src
+LOCAL_STATIC_LIBRARIES := example_util imagedec imageenc webp
+
 LOCAL_MODULE := dwebp
 
 include $(BUILD_EXECUTABLE)
@@ -55,6 +58,7 @@ LOCAL_SRC_FILES := \
     webpmux.c \
 
 LOCAL_CFLAGS := $(WEBP_CFLAGS)
+LOCAL_C_INCLUDES := $(LOCAL_PATH)/../src
 LOCAL_STATIC_LIBRARIES := example_util imageio_util webpmux webp
 
 LOCAL_MODULE := webpmux_example
@@ -70,8 +74,8 @@ LOCAL_SRC_FILES := \
     img2webp.c \
 
 LOCAL_CFLAGS := $(WEBP_CFLAGS)
-LOCAL_STATIC_LIBRARIES := example_util imageio_util imagedec webpmux webpdemux \
-                          webp
+LOCAL_C_INCLUDES := $(LOCAL_PATH)/../src
+LOCAL_STATIC_LIBRARIES := example_util imageio_util imagedec webpmux webp
 
 LOCAL_MODULE := img2webp_example
 
@@ -86,6 +90,7 @@ LOCAL_SRC_FILES := \
     webpinfo.c \
 
 LOCAL_CFLAGS := $(WEBP_CFLAGS)
+LOCAL_C_INCLUDES := $(LOCAL_PATH)/../src
 LOCAL_STATIC_LIBRARIES := example_util imageio_util webp
 
 LOCAL_MODULE := webpinfo_example

examples/Makefile.am

@@ -1,11 +1,8 @@
 AM_CPPFLAGS += -I$(top_builddir)/src -I$(top_srcdir)/src
 
-bin_PROGRAMS =
-if BUILD_DEMUX
-  bin_PROGRAMS += dwebp cwebp
-endif
+bin_PROGRAMS = dwebp cwebp
 if BUILD_ANIMDIFF
-  noinst_PROGRAMS = anim_diff anim_dump
+  noinst_PROGRAMS = anim_diff
 endif
 if BUILD_GIF2WEBP
   bin_PROGRAMS += gif2webp
@@ -13,7 +10,7 @@ endif
 if BUILD_IMG2WEBP
   bin_PROGRAMS += img2webp
 endif
-if BUILD_MUX
+if WANT_MUX
   bin_PROGRAMS += webpmux
 endif
 if BUILD_VWEBP
@@ -28,38 +25,22 @@ noinst_LTLIBRARIES = libexample_util.la
 libexample_util_la_SOURCES = example_util.c example_util.h
 libexample_util_la_LIBADD = ../src/libwebp.la
 
-anim_diff_SOURCES = anim_diff.c anim_util.c anim_util.h gifdec.c gifdec.h
-anim_diff_CPPFLAGS = $(AM_CPPFLAGS) $(GIF_INCLUDES)
-anim_diff_LDADD  =
-anim_diff_LDADD += ../src/demux/libwebpdemux.la
-anim_diff_LDADD += libexample_util.la
-anim_diff_LDADD += ../imageio/libimageio_util.la
+anim_diff_SOURCES = anim_diff.c anim_util.c anim_util.h
+anim_diff_CPPFLAGS = $(AM_CPPFLAGS) $(USE_EXPERIMENTAL_CODE) $(GIF_INCLUDES)
+anim_diff_LDADD  = ../src/demux/libwebpdemux.la
+anim_diff_LDADD += libexample_util.la ../imageio/libimageio_util.la
 anim_diff_LDADD += $(GIF_LIBS) -lm
 
-anim_dump_SOURCES = anim_dump.c anim_util.c anim_util.h gifdec.c gifdec.h
-anim_dump_CPPFLAGS = $(AM_CPPFLAGS) $(PNG_INCLUDES)
-anim_dump_CPPFLAGS += $(GIF_INCLUDES)
-anim_dump_LDADD  =
-anim_dump_LDADD += ../src/demux/libwebpdemux.la
-anim_dump_LDADD += libexample_util.la
-anim_dump_LDADD += ../imageio/libimageio_util.la
-anim_dump_LDADD += ../imageio/libimageenc.la
-anim_dump_LDADD += $(PNG_LIBS) $(GIF_LIBS) $(TIFF_LIBS) -lm
-
 cwebp_SOURCES  = cwebp.c stopwatch.h
-cwebp_CPPFLAGS  = $(AM_CPPFLAGS)
-cwebp_LDADD  =
-cwebp_LDADD += libexample_util.la
-cwebp_LDADD += ../imageio/libimageio_util.la
-cwebp_LDADD += ../imageio/libimagedec.la
-cwebp_LDADD += ../src/libwebp.la
+cwebp_CPPFLAGS  = $(AM_CPPFLAGS) $(USE_EXPERIMENTAL_CODE)
+cwebp_LDADD  = libexample_util.la ../imageio/libimageio_util.la
+cwebp_LDADD += ../imageio/libimagedec.la ../src/libwebp.la
 cwebp_LDADD += $(JPEG_LIBS) $(PNG_LIBS) $(TIFF_LIBS)
 
 dwebp_SOURCES = dwebp.c stopwatch.h
-dwebp_CPPFLAGS  = $(AM_CPPFLAGS)
+dwebp_CPPFLAGS  = $(AM_CPPFLAGS) $(USE_EXPERIMENTAL_CODE)
 dwebp_CPPFLAGS += $(JPEG_INCLUDES) $(PNG_INCLUDES)
-dwebp_LDADD  =
-dwebp_LDADD += libexample_util.la
+dwebp_LDADD  = libexample_util.la
 dwebp_LDADD += ../imageio/libimagedec.la
 dwebp_LDADD += ../imageio/libimageenc.la
 dwebp_LDADD += ../imageio/libimageio_util.la
@@ -67,53 +48,36 @@ dwebp_LDADD += ../src/libwebp.la
 dwebp_LDADD +=$(PNG_LIBS) $(JPEG_LIBS)
 
 gif2webp_SOURCES = gif2webp.c gifdec.c gifdec.h
-gif2webp_CPPFLAGS = $(AM_CPPFLAGS) $(GIF_INCLUDES)
-gif2webp_LDADD  =
-gif2webp_LDADD += libexample_util.la
-gif2webp_LDADD += ../imageio/libimageio_util.la
-gif2webp_LDADD += ../src/mux/libwebpmux.la
-gif2webp_LDADD += ../src/libwebp.la
-gif2webp_LDADD += $(GIF_LIBS)
+gif2webp_CPPFLAGS = $(AM_CPPFLAGS) $(USE_EXPERIMENTAL_CODE) $(GIF_INCLUDES)
+gif2webp_LDADD  = libexample_util.la ../imageio/libimageio_util.la
+gif2webp_LDADD += ../src/mux/libwebpmux.la ../src/libwebp.la $(GIF_LIBS)
 
 vwebp_SOURCES = vwebp.c
-vwebp_CPPFLAGS = $(AM_CPPFLAGS) $(GL_INCLUDES)
-vwebp_LDADD  =
-vwebp_LDADD += libexample_util.la
-vwebp_LDADD += ../imageio/libimageio_util.la
-vwebp_LDADD += ../src/demux/libwebpdemux.la
-vwebp_LDADD += $(GL_LIBS)
+vwebp_CPPFLAGS = $(AM_CPPFLAGS) $(USE_EXPERIMENTAL_CODE) $(GL_INCLUDES)
+vwebp_LDADD  = libexample_util.la ../imageio/libimageio_util.la
+vwebp_LDADD += ../src/demux/libwebpdemux.la $(GL_LIBS)
 
 webpmux_SOURCES = webpmux.c
-webpmux_CPPFLAGS = $(AM_CPPFLAGS)
-webpmux_LDADD  =
-webpmux_LDADD += libexample_util.la
-webpmux_LDADD += ../imageio/libimageio_util.la
-webpmux_LDADD += ../src/mux/libwebpmux.la
-webpmux_LDADD += ../src/libwebp.la
+webpmux_CPPFLAGS = $(AM_CPPFLAGS) $(USE_EXPERIMENTAL_CODE)
+webpmux_LDADD  = libexample_util.la ../imageio/libimageio_util.la
+webpmux_LDADD += ../src/mux/libwebpmux.la ../src/libwebp.la
 
 img2webp_SOURCES = img2webp.c
-img2webp_CPPFLAGS = $(AM_CPPFLAGS)
-img2webp_LDADD  =
-img2webp_LDADD += libexample_util.la
-img2webp_LDADD += ../imageio/libimageio_util.la
+img2webp_CPPFLAGS = $(AM_CPPFLAGS) $(USE_EXPERIMENTAL_CODE)
+img2webp_LDADD  = libexample_util.la ../imageio/libimageio_util.la
 img2webp_LDADD += ../imageio/libimagedec.la
-img2webp_LDADD += ../src/mux/libwebpmux.la
-img2webp_LDADD += ../src/libwebp.la
+img2webp_LDADD += ../src/mux/libwebpmux.la ../src/libwebp.la
 img2webp_LDADD += $(PNG_LIBS) $(JPEG_LIBS) $(TIFF_LIBS)
 
 webpinfo_SOURCES = webpinfo.c
-webpinfo_CPPFLAGS = $(AM_CPPFLAGS)
-webpinfo_LDADD  =
-webpinfo_LDADD += libexample_util.la
-webpinfo_LDADD += ../imageio/libimageio_util.la
+webpinfo_CPPFLAGS = $(AM_CPPFLAGS) $(USE_EXPERIMENTAL_CODE)
+webpinfo_LDADD  = libexample_util.la ../imageio/libimageio_util.la
 webpinfo_LDADD += ../src/libwebp.la
 
 if BUILD_LIBWEBPDECODER
   anim_diff_LDADD += ../src/libwebpdecoder.la
-  anim_dump_LDADD += ../src/libwebpdecoder.la
   vwebp_LDADD += ../src/libwebpdecoder.la
 else
   anim_diff_LDADD += ../src/libwebp.la
-  anim_dump_LDADD += ../src/libwebp.la
   vwebp_LDADD += ../src/libwebp.la
 endif

examples/anim_diff.c

@@ -20,8 +20,6 @@
 #include <string.h>  // for 'strcmp'.
 
 #include "./anim_util.h"
-#include "./example_util.h"
-#include "./unicode.h"
 
 #if defined(_MSC_VER) && _MSC_VER < 1900
 #define snprintf _snprintf
@@ -145,18 +143,8 @@ static int CompareAnimatedImagePair(const AnimatedImage* const img1,
   if (!ok) return 0;  // These are fatal failures, can't proceed.
 
   if (is_multi_frame_image) {  // Checks relevant for multi-frame images only.
-    int max_loop_count_workaround = 0;
-    // Transcodes to webp increase the gif loop count by 1 for compatibility.
-    // When the gif has the maximum value the webp value will be off by one.
-    if ((img1->format == ANIM_GIF && img1->loop_count == 65536 &&
-         img2->format == ANIM_WEBP && img2->loop_count == 65535) ||
-        (img1->format == ANIM_WEBP && img1->loop_count == 65535 &&
-         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 = CompareValues(img1->loop_count, img2->loop_count,
+                       "Loop count mismatch") && ok;
     ok = CompareBackgroundColor(img1->bgcolor, img2->bgcolor,
                                 premultiply) && ok;
   }
@@ -199,11 +187,11 @@ 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"
+#ifdef WEBP_EXPERIMENTAL_FEATURES
+  printf("  -max_diff <int> ..... maximum allowed difference per channel "
+         "                        between corresponding pixels in subsequent"
          "                        frames\n");
-  printf("  -h .................. this help\n");
-  printf("  -version ............ print version number and exit\n");
+#endif
 }
 
 int main(int argc, const char* argv[]) {
@@ -219,49 +207,56 @@ int main(int argc, const char* argv[]) {
   const char* files[2] = { NULL, NULL };
   AnimatedImage images[2];
 
-  INIT_WARGV(argc, argv);
+  if (argc < 3) {
+    Help();
+    return -1;
+  }
 
   for (c = 1; c < argc; ++c) {
     int parse_error = 0;
     if (!strcmp(argv[c], "-dump_frames")) {
       if (c < argc - 1) {
         dump_frames = 1;
-        dump_folder = (const char*)GET_WARGV(argv, ++c);
+        dump_folder = argv[++c];
       } else {
         parse_error = 1;
       }
     } else if (!strcmp(argv[c], "-min_psnr")) {
       if (c < argc - 1) {
-        min_psnr = ExUtilGetFloat(argv[++c], &parse_error);
+        const char* const v = argv[++c];
+        char* end = NULL;
+        const double d = strtod(v, &end);
+        if (end == v) {
+          parse_error = 1;
+          fprintf(stderr, "Error! '%s' is not a floating point number.\n", v);
+        }
+        min_psnr = d;
       } else {
         parse_error = 1;
       }
     } else if (!strcmp(argv[c], "-raw_comparison")) {
       premultiply = 0;
+#ifdef WEBP_EXPERIMENTAL_FEATURES
     } else if (!strcmp(argv[c], "-max_diff")) {
       if (c < argc - 1) {
-        max_diff = ExUtilGetInt(argv[++c], 0, &parse_error);
+        const char* const v = argv[++c];
+        char* end = NULL;
+        const int n = (int)strtol(v, &end, 10);
+        if (end == v) {
+          parse_error = 1;
+          fprintf(stderr, "Error! '%s' is not an integer.\n", v);
+        }
+        max_diff = n;
       } else {
         parse_error = 1;
       }
-    } else if (!strcmp(argv[c], "-h") || !strcmp(argv[c], "-help")) {
-      Help();
-      FREE_WARGV_AND_RETURN(0);
-    } else if (!strcmp(argv[c], "-version")) {
-      int dec_version, demux_version;
-      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);
-      FREE_WARGV_AND_RETURN(0);
+#endif
     } else {
       if (!got_input1) {
-        files[0] = (const char*)GET_WARGV(argv, c);
+        files[0] = argv[c];
         got_input1 = 1;
       } else if (!got_input2) {
-        files[1] = (const char*)GET_WARGV(argv, c);
+        files[1] = argv[c];
         got_input2 = 1;
       } else {
         parse_error = 1;
@@ -269,30 +264,23 @@ int main(int argc, const char* argv[]) {
     }
     if (parse_error) {
       Help();
-      FREE_WARGV_AND_RETURN(-1);
+      return -1;
     }
   }
-  if (argc < 3) {
-    Help();
-    FREE_WARGV_AND_RETURN(-1);
-  }
-
-
   if (!got_input2) {
     Help();
-    FREE_WARGV_AND_RETURN(-1);
+    return -1;
   }
 
   if (dump_frames) {
-    WPRINTF("Dumping decoded frames in: %s\n", (const W_CHAR*)dump_folder);
+    printf("Dumping decoded frames in: %s\n", dump_folder);
   }
 
   memset(images, 0, sizeof(images));
   for (i = 0; i < 2; ++i) {
-    WPRINTF("Decoding file: %s\n", (const W_CHAR*)files[i]);
+    printf("Decoding file: %s\n", files[i]);
     if (!ReadAnimatedImage(files[i], &images[i], dump_frames, dump_folder)) {
-      WFPRINTF(stderr, "Error decoding file: %s\n Aborting.\n",
-               (const W_CHAR*)files[i]);
+      fprintf(stderr, "Error decoding file: %s\n Aborting.\n", files[i]);
       return_code = -2;
       goto End;
     } else {
@@ -302,16 +290,14 @@ int main(int argc, const char* argv[]) {
 
   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]);
+    fprintf(stderr, "\nFiles %s and %s differ.\n", files[0], files[1]);
     return_code = -3;
   } else {
-    WPRINTF("\nFiles %s and %s are identical.\n", (const W_CHAR*)files[0],
-            (const W_CHAR*)files[1]);
+    printf("\nFiles %s and %s are identical.\n", files[0], files[1]);
     return_code = 0;
   }
  End:
   ClearAnimatedImage(&images[0]);
   ClearAnimatedImage(&images[1]);
-  FREE_WARGV_AND_RETURN(return_code);
+  return return_code;
 }

examples/anim_dump.c

@@ -1,121 +0,0 @@
-// Copyright 2017 Google Inc. All Rights Reserved.
-//
-// Use of this source code is governed by a BSD-style license
-// that can be found in the COPYING file in the root of the source
-// tree. An additional intellectual property rights grant can be found
-// in the file PATENTS. All contributing project authors may
-// be found in the AUTHORS file in the root of the source tree.
-// -----------------------------------------------------------------------------
-//
-// Decodes an animated WebP file and dumps the decoded frames as PNG or TIFF.
-//
-// Author: Skal (pascal.massimino@gmail.com)
-
-#include <stdio.h>
-#include <string.h>  // for 'strcmp'.
-
-#include "./anim_util.h"
-#include "webp/decode.h"
-#include "../imageio/image_enc.h"
-#include "./unicode.h"
-
-#if defined(_MSC_VER) && _MSC_VER < 1900
-#define snprintf _snprintf
-#endif
-
-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("  -tiff ............... save frames as TIFF\n");
-  printf("  -pam ................ save frames as PAM\n");
-  printf("  -h .................. this help\n");
-  printf("  -version ............ print version number and exit\n");
-}
-
-int main(int argc, const char* argv[]) {
-  int error = 0;
-  const W_CHAR* dump_folder = TO_W_CHAR(".");
-  const W_CHAR* prefix = TO_W_CHAR("dump_");
-  const W_CHAR* suffix = TO_W_CHAR("png");
-  WebPOutputFileFormat format = PNG;
-  int c;
-
-  INIT_WARGV(argc, argv);
-
-  if (argc < 2) {
-    Help();
-    FREE_WARGV_AND_RETURN(-1);
-  }
-
-  for (c = 1; !error && c < argc; ++c) {
-    if (!strcmp(argv[c], "-folder")) {
-      if (c + 1 == argc) {
-        fprintf(stderr, "missing argument after option '%s'\n", argv[c]);
-        error = 1;
-        break;
-      }
-      dump_folder = GET_WARGV(argv, ++c);
-    } else if (!strcmp(argv[c], "-prefix")) {
-      if (c + 1 == argc) {
-        fprintf(stderr, "missing argument after option '%s'\n", argv[c]);
-        error = 1;
-        break;
-      }
-      prefix = GET_WARGV(argv, ++c);
-    } else if (!strcmp(argv[c], "-tiff")) {
-      format = TIFF;
-      suffix = TO_W_CHAR("tiff");
-    } else if (!strcmp(argv[c], "-pam")) {
-      format = PAM;
-      suffix = TO_W_CHAR("pam");
-    } else if (!strcmp(argv[c], "-h") || !strcmp(argv[c], "-help")) {
-      Help();
-      FREE_WARGV_AND_RETURN(0);
-    } else if (!strcmp(argv[c], "-version")) {
-      int dec_version, demux_version;
-      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);
-      FREE_WARGV_AND_RETURN(0);
-    } 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);
-      if (!ReadAnimatedImage((const char*)file, &image, 0, NULL)) {
-        WFPRINTF(stderr, "Error decoding file: %s\n Aborting.\n", file);
-        error = 1;
-        break;
-      }
-      for (i = 0; !error && i < image.num_frames; ++i) {
-        W_CHAR out_file[1024];
-        WebPDecBuffer buffer;
-        WebPInitDecBuffer(&buffer);
-        buffer.colorspace = MODE_RGBA;
-        buffer.is_external_memory = 1;
-        buffer.width = image.canvas_width;
-        buffer.height = image.canvas_height;
-        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);
-        if (!WebPSaveImage(&buffer, format, (const char*)out_file)) {
-          WFPRINTF(stderr, "Error while saving image '%s'\n", out_file);
-          error = 1;
-        }
-        WebPFreeDecBuffer(&buffer);
-      }
-      ClearAnimatedImage(&image);
-    }
-  }
-  FREE_WARGV_AND_RETURN(error ? 1 : 0);
-}

examples/anim_util.c

@@ -16,16 +16,13 @@
 #include <stdio.h>
 #include <string.h>
 
-#if defined(WEBP_HAVE_GIF)
+#ifdef 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"
 
 #if defined(_MSC_VER) && _MSC_VER < 1900
 #define snprintf _snprintf
@@ -36,13 +33,11 @@ static const int kNumChannels = 4;
 // -----------------------------------------------------------------------------
 // Common utilities.
 
-#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) {
   return (width == canvas_width && height == canvas_height);
 }
-#endif // WEBP_HAVE_GIF
 
 static int CheckSizeForOverflow(uint64_t size) {
   return (size == (size_t)size);
@@ -90,7 +85,6 @@ 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) {
@@ -132,7 +126,6 @@ static void CopyFrameRectangle(const uint8_t* src, uint8_t* dst, int stride,
     dst += stride;
   }
 }
-#endif // WEBP_HAVE_GIF
 
 // Canonicalize all transparent pixels to transparent black to aid comparison.
 static void CleanupTransparentPixels(uint32_t* rgba,
@@ -154,42 +147,40 @@ static int DumpFrame(const char filename[], const char dump_folder[],
   int ok = 0;
   size_t max_len;
   int y;
-  const W_CHAR* base_name = NULL;
-  W_CHAR* file_name = NULL;
+  const char* base_name = NULL;
+  char* file_name = NULL;
   FILE* f = NULL;
   const char* row;
 
-  if (dump_folder == NULL) dump_folder = (const char*)TO_W_CHAR(".");
-
-  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)
+  base_name = strrchr(filename, '/');
+  base_name = (base_name == NULL) ? filename : base_name + 1;
+  max_len = strlen(dump_folder) + 1 + strlen(base_name)
           + strlen("_frame_") + strlen(".pam") + 8;
-  file_name = (W_CHAR*)malloc(max_len * sizeof(*file_name));
+  file_name = (char*)malloc(max_len * sizeof(*file_name));
   if (file_name == NULL) goto End;
 
-  if (WSNPRINTF(file_name, max_len, "%s/%s_frame_%d.pam",
-                (const W_CHAR*)dump_folder, base_name, frame_num) < 0) {
+  if (snprintf(file_name, max_len, "%s/%s_frame_%d.pam",
+               dump_folder, base_name, frame_num) < 0) {
     fprintf(stderr, "Error while generating file name\n");
     goto End;
   }
 
-  f = WFOPEN(file_name, "wb");
+  f = fopen(file_name, "wb");
   if (f == NULL) {
-    WFPRINTF(stderr, "Error opening file for writing: %s\n", file_name);
+    fprintf(stderr, "Error opening file for writing: %s\n", file_name);
     ok = 0;
     goto End;
   }
   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);
+    fprintf(stderr, "Write error for file %s\n", file_name);
     goto End;
   }
   row = (const char*)rgba;
   for (y = 0; y < canvas_height; ++y) {
     if (fwrite(row, canvas_width * kNumChannels, 1, f) != 1) {
-      WFPRINTF(stderr, "Error writing to file: %s\n", file_name);
+      fprintf(stderr, "Error writing to file: %s\n", file_name);
       goto End;
     }
     row += canvas_width * kNumChannels;
@@ -209,7 +200,7 @@ static int IsWebP(const WebPData* const webp_data) {
   return (WebPGetInfo(webp_data->bytes, webp_data->size, NULL, NULL) != 0);
 }
 
-// Read animated WebP bitstream 'webp_data' into 'AnimatedImage' struct.
+// Read animated WebP bitstream 'file_str' into 'AnimatedImage' struct.
 static int ReadAnimatedWebP(const char filename[],
                             const WebPData* const webp_data,
                             AnimatedImage* const image, int dump_frames,
@@ -225,7 +216,7 @@ static int ReadAnimatedWebP(const char filename[],
 
   dec = WebPAnimDecoderNew(webp_data, NULL);
   if (dec == NULL) {
-    WFPRINTF(stderr, "Error parsing image: %s\n", (const W_CHAR*)filename);
+    fprintf(stderr, "Error parsing image: %s\n", filename);
     goto End;
   }
 
@@ -278,7 +269,6 @@ static int ReadAnimatedWebP(const char filename[],
     prev_frame_timestamp = timestamp;
   }
   ok = dump_ok;
-  if (ok) image->format = ANIM_WEBP;
 
  End:
   WebPAnimDecoderDelete(dec);
@@ -288,7 +278,7 @@ static int ReadAnimatedWebP(const char filename[],
 // -----------------------------------------------------------------------------
 // GIF Decoding.
 
-#if defined(WEBP_HAVE_GIF)
+#ifdef WEBP_HAVE_GIF
 
 // Returns true if this is a valid GIF bitstream.
 static int IsGIF(const WebPData* const data) {
@@ -373,6 +363,26 @@ static int DGifSavedExtensionToGCB(GifFileType* GifFile, int ImageIndex,
 #define DGifCloseFile(a, b) DGifCloseFile(a)
 #endif
 
+static 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)
+  const char* error_str =
+      GifErrorString((gif == NULL) ? gif_error : gif->Error);
+#else
+  const char* error_str = GifErrorString();
+  (void)gif;
+#endif
+  if (error_str == NULL) error_str = "Unknown error";
+  fprintf(stderr, "GIFLib Error %d: %s\n", gif_error, error_str);
+#else
+  (void)gif;
+  fprintf(stderr, "GIFLib Error %d: ", gif_error);
+  PrintGifError();
+  fprintf(stderr, "\n");
+#endif
+}
+
 static int IsKeyFrameGIF(const GifImageDesc* prev_desc, int prev_dispose,
                          const DecodedFrame* const prev_frame,
                          int canvas_width, int canvas_height) {
@@ -413,11 +423,6 @@ static uint32_t GetBackgroundColorGIF(GifFileType* gif) {
 }
 
 // Find appropriate app extension and get loop count from the next extension.
-// We use Chrome's interpretation of the 'loop_count' semantics:
-//   if not present -> loop once
-//   if present and loop_count == 0, return 0 ('infinite').
-//   if present and loop_count != 0, it's the number of *extra* loops
-//     so we need to return loop_count + 1 as total loop number.
 static uint32_t GetLoopCountGIF(const GifFileType* const gif) {
   int i;
   for (i = 0; i < gif->ImageCount; ++i) {
@@ -435,13 +440,12 @@ static uint32_t GetLoopCountGIF(const GifFileType* const gif) {
       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;
+        return ((uint32_t)(eb2->Bytes[2]) << 8) +
+               ((uint32_t)(eb2->Bytes[1]) << 0);
       }
     }
   }
-  return 1;  // Default.
+  return 0;  // Default.
 }
 
 // Get duration of 'n'th frame in milliseconds.
@@ -513,15 +517,15 @@ static int ReadAnimatedGIF(const char filename[], AnimatedImage* const image,
   int gif_error;
   GifFileType* gif;
 
-  gif = DGifOpenFileUnicode((const W_CHAR*)filename, NULL);
+  gif = DGifOpenFileName(filename, NULL);
   if (gif == NULL) {
-    WFPRINTF(stderr, "Could not read file: %s.\n", (const W_CHAR*)filename);
+    fprintf(stderr, "Could not read file: %s.\n", filename);
     return 0;
   }
 
   gif_error = DGifSlurp(gif);
   if (gif_error != GIF_OK) {
-    WFPRINTF(stderr, "Could not parse image: %s.\n", (const W_CHAR*)filename);
+    fprintf(stderr, "Could not parse image: %s.\n", filename);
     GIFDisplayError(gif, gif_error);
     DGifCloseFile(gif, NULL);
     return 0;
@@ -577,9 +581,6 @@ static int ReadAnimatedGIF(const char filename[], AnimatedImage* const image,
     curr_frame = &image->frames[i];
     curr_rgba = curr_frame->rgba;
     curr_frame->duration = GetFrameDurationGIF(gif, i);
-    // Force frames with a small or no duration to 100ms to be consistent
-    // with web browsers and other transcoding tools (like gif2webp itself).
-    if (curr_frame->duration <= 10) curr_frame->duration = 100;
 
     if (i == 0) {  // Initialize as transparent.
       curr_frame->is_key_frame = 1;
@@ -671,7 +672,6 @@ static int ReadAnimatedGIF(const char filename[], AnimatedImage* const image,
       }
     }
   }
-  image->format = ANIM_GIF;
   DGifCloseFile(gif, NULL);
   return 1;
 }
@@ -707,7 +707,7 @@ int ReadAnimatedImage(const char filename[], AnimatedImage* const image,
   memset(image, 0, sizeof(*image));
 
   if (!ImgIoUtilReadFile(filename, &webp_data.bytes, &webp_data.size)) {
-    WFPRINTF(stderr, "Error reading file: %s\n", (const W_CHAR*)filename);
+    fprintf(stderr, "Error reading file: %s\n", filename);
     return 0;
   }
 
@@ -717,9 +717,9 @@ int ReadAnimatedImage(const char filename[], AnimatedImage* const image,
   } else if (IsGIF(&webp_data)) {
     ok = ReadAnimatedGIF(filename, image, dump_frames, dump_folder);
   } else {
-    WFPRINTF(stderr,
-             "Unknown file type: %s. Supported file types are WebP and GIF\n",
-             (const W_CHAR*)filename);
+    fprintf(stderr,
+            "Unknown file type: %s. Supported file types are WebP and GIF\n",
+            filename);
     ok = 0;
   }
   if (!ok) ClearAnimatedImage(image);
@@ -771,9 +771,3 @@ void GetDiffAndPSNR(const uint8_t rgba1[], const uint8_t rgba2[],
     *psnr = 4.3429448 * log(255. * 255. / sse);
   }
 }
-
-void GetAnimatedImageVersions(int* const decoder_version,
-                              int* const demux_version) {
-  *decoder_version = WebPGetDecoderVersion();
-  *demux_version = WebPGetDemuxVersion();
-}

examples/anim_util.h

@@ -22,11 +22,6 @@
 extern "C" {
 #endif
 
-typedef enum {
-  ANIM_GIF,
-  ANIM_WEBP
-} AnimatedFileFormat;
-
 typedef struct {
   uint8_t* rgba;         // Decoded and reconstructed full frame.
   int duration;          // Frame duration in milliseconds.
@@ -34,7 +29,6 @@ typedef struct {
 } DecodedFrame;
 
 typedef struct {
-  AnimatedFileFormat format;
   uint32_t canvas_width;
   uint32_t canvas_height;
   uint32_t bgcolor;
@@ -62,10 +56,6 @@ void GetDiffAndPSNR(const uint8_t rgba1[], const uint8_t rgba2[],
                     uint32_t width, uint32_t height, int premultiply,
                     int* const max_diff, double* const psnr);
 
-// Return library versions used by anim_util.
-void GetAnimatedImageVersions(int* const decoder_version,
-                              int* const demux_version);
-
 #ifdef __cplusplus
 }    // extern "C"
 #endif

examples/cwebp.c

@@ -24,7 +24,6 @@
 #include "../imageio/image_dec.h"
 #include "../imageio/imageio_util.h"
 #include "./stopwatch.h"
-#include "./unicode.h"
 #include "webp/encode.h"
 
 #ifndef WEBP_DLL
@@ -89,8 +88,7 @@ static int ReadPicture(const char* const filename, WebPPicture* const pic,
     }
   }
   if (!ok) {
-    WFPRINTF(stderr, "Error! Could not process file %s\n",
-             (const W_CHAR*)filename);
+    fprintf(stderr, "Error! Could not process file %s\n", filename);
   }
   free((void*)data);
   return ok;
@@ -116,8 +114,7 @@ static int ReadPicture(const char* const filename, WebPPicture* const pic,
   }
  End:
   if (!ok) {
-    WFPRINTF(stderr, "Error! Could not process file %s\n",
-             (const W_CHAR*)filename);
+    fprintf(stderr, "Error! Could not process file %s\n", filename);
   }
   free((void*)data);
   return ok;
@@ -143,11 +140,10 @@ static void PrintByteCount(const int bytes[4], int total_size,
   fprintf(stderr, "| %7d  (%.1f%%)\n", total, 100.f * total / total_size);
 }
 
-static void PrintPercents(const int counts[4]) {
+static void PrintPercents(const int counts[4], int total) {
   int s;
-  const int total = counts[0] + counts[1] + counts[2] + counts[3];
   for (s = 0; s < 4; ++s) {
-    fprintf(stderr, "|      %2d%%", (int)(100. * counts[s] / total + .5));
+    fprintf(stderr, "|      %2d%%", 100 * counts[s] / total);
   }
   fprintf(stderr, "| %7d\n", total);
 }
@@ -188,10 +184,9 @@ static void PrintExtraInfoLossless(const WebPPicture* const pic,
   if (short_output) {
     fprintf(stderr, "%7d %2.2f\n", stats->coded_size, stats->PSNR[3]);
   } else {
-    WFPRINTF(stderr, "File:      %s\n", (const W_CHAR*)file_name);
+    fprintf(stderr, "File:      %s\n", file_name);
     fprintf(stderr, "Dimension: %d x %d\n", pic->width, pic->height);
-    fprintf(stderr, "Output:    %d bytes (%.2f bpp)\n", stats->coded_size,
-            8.f * stats->coded_size / pic->width / pic->height);
+    fprintf(stderr, "Output:    %d bytes\n", stats->coded_size);
     PrintFullLosslessInfo(stats, "ARGB");
   }
 }
@@ -207,23 +202,20 @@ static void PrintExtraInfoLossy(const WebPPicture* const pic, int short_output,
     const int num_i16 = stats->block_count[1];
     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, "File:      %s\n", file_name);
     fprintf(stderr, "Dimension: %d x %d%s\n",
             pic->width, pic->height,
             stats->alpha_data_size ? " (with alpha)" : "");
     fprintf(stderr, "Output:    "
-            "%d bytes Y-U-V-All-PSNR %2.2f %2.2f %2.2f   %2.2f dB\n"
-            "           (%.2f bpp)\n",
+            "%d bytes Y-U-V-All-PSNR %2.2f %2.2f %2.2f   %2.2f dB\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->PSNR[0], stats->PSNR[1], stats->PSNR[2], stats->PSNR[3]);
     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,
+      fprintf(stderr, "block count:  intra4: %d\n"
+                      "              intra16: %d  (-> %.2f%%)\n",
+              num_i4, num_i16, 100.f * num_i16 / total);
+      fprintf(stderr, "              skipped block: %d (%.2f%%)\n",
               num_skip, 100.f * num_skip / total);
       fprintf(stderr, "bytes used:  header:         %6d  (%.1f%%)\n"
                       "             mode-partition: %6d  (%.1f%%)\n",
@@ -247,7 +239,7 @@ static void PrintExtraInfoLossy(const WebPPicture* const pic, int short_output,
         PrintByteCount(stats->residual_bytes[2], stats->coded_size, totals);
       }
       fprintf(stderr, "    macroblocks:  ");
-      PrintPercents(stats->segment_size);
+      PrintPercents(stats->segment_size, total);
       fprintf(stderr, "      quantizer:  ");
       PrintValues(stats->segment_quant);
       fprintf(stderr, "   filter level:  ");
@@ -312,7 +304,7 @@ static int DumpPicture(const WebPPicture* const picture, const char* PGM_name) {
   const int alpha_height =
       WebPPictureHasTransparency(picture) ? picture->height : 0;
   const int height = picture->height + uv_height + alpha_height;
-  FILE* const f = WFOPEN(PGM_name, "wb");
+  FILE* const f = fopen(PGM_name, "wb");
   if (f == NULL) return 0;
   fprintf(f, "P5\n%d %d\n255\n", stride, height);
   for (y = 0; y < picture->height; ++y) {
@@ -471,9 +463,8 @@ static int WriteWebPWithMetadata(FILE* const out,
     } else {
       const int is_lossless = !memcmp(webp, "VP8L", kTagSize);
       if (is_lossless) {
-        // Presence of alpha is stored in the 37th bit (29th after the
-        // signature) of VP8L data.
-        if (webp[kChunkHeaderSize + 4] & (1 << 4)) flags |= kAlphaFlag;
+        // Presence of alpha is stored in the 29th bit of VP8L data.
+        if (webp[kChunkHeaderSize + 3] & (1 << 5)) flags |= kAlphaFlag;
       }
       ok = ok && (fwrite(kVP8XHeader, kChunkHeaderSize, 1, out) == 1);
       ok = ok && WriteLE32(out, flags);
@@ -495,10 +486,10 @@ static int WriteWebPWithMetadata(FILE* const out,
       *metadata_written |= METADATA_XMP;
     }
     return ok;
+  } else {
+    // No metadata, just write the original image file.
+    return (fwrite(webp, webp_size, 1, out) == 1);
   }
-
-  // No metadata, just write the original image file.
-  return (fwrite(webp, webp_size, 1, out) == 1);
 }
 
 //------------------------------------------------------------------------------
@@ -588,6 +579,9 @@ static void HelpLong(void) {
   printf("  -near_lossless <int> ... use near-lossless image\n"
          "                           preprocessing (0..100=off), "
          "default=100\n");
+#ifdef WEBP_EXPERIMENTAL_FEATURES  /* not documented yet */
+  printf("  -delta_palette ......... use delta palettization\n");
+#endif  // WEBP_EXPERIMENTAL_FEATURES
   printf("  -hint <string> ......... specify image characteristics hint,\n");
   printf("                           one of: photo, picture or graph\n");
 
@@ -666,34 +660,32 @@ int main(int argc, const char *argv[]) {
   Metadata metadata;
   Stopwatch stop_watch;
 
-  INIT_WARGV(argc, argv);
-
   MetadataInit(&metadata);
   WebPMemoryWriterInit(&memory_writer);
   if (!WebPPictureInit(&picture) ||
       !WebPPictureInit(&original_picture) ||
       !WebPConfigInit(&config)) {
     fprintf(stderr, "Error! Version mismatch!\n");
-    FREE_WARGV_AND_RETURN(-1);
+    return -1;
   }
 
   if (argc == 1) {
     HelpShort();
-    FREE_WARGV_AND_RETURN(0);
+    return 0;
   }
 
   for (c = 1; c < argc; ++c) {
     int parse_error = 0;
     if (!strcmp(argv[c], "-h") || !strcmp(argv[c], "-help")) {
       HelpShort();
-      FREE_WARGV_AND_RETURN(0);
+      return 0;
     } else if (!strcmp(argv[c], "-H") || !strcmp(argv[c], "-longhelp")) {
       HelpLong();
-      FREE_WARGV_AND_RETURN(0);
+      return 0;
     } else if (!strcmp(argv[c], "-o") && c < argc - 1) {
-      out_file = (const char*)GET_WARGV(argv, ++c);
+      out_file = argv[++c];
     } else if (!strcmp(argv[c], "-d") && c < argc - 1) {
-      dump_file = (const char*)GET_WARGV(argv, ++c);
+      dump_file = argv[++c];
       config.show_compressed = 1;
     } else if (!strcmp(argv[c], "-print_psnr")) {
       config.show_compressed = 1;
@@ -758,6 +750,11 @@ int main(int argc, const char *argv[]) {
     } else if (!strcmp(argv[c], "-near_lossless") && c < argc - 1) {
       config.near_lossless = ExUtilGetInt(argv[++c], 0, &parse_error);
       config.lossless = 1;  // use near-lossless only with lossless
+#ifdef WEBP_EXPERIMENTAL_FEATURES
+    } else if (!strcmp(argv[c], "-delta_palette")) {
+      config.use_delta_palette = 1;
+      config.lossless = 1;  // delta-palette is for lossless only
+#endif  // WEBP_EXPERIMENTAL_FEATURES
     } else if (!strcmp(argv[c], "-hint") && c < argc - 1) {
       ++c;
       if (!strcmp(argv[c], "photo")) {
@@ -821,7 +818,7 @@ int main(int argc, const char *argv[]) {
       const int version = WebPGetEncoderVersion();
       printf("%d.%d.%d\n",
              (version >> 16) & 0xff, (version >> 8) & 0xff, version & 0xff);
-      FREE_WARGV_AND_RETURN(0);
+      return 0;
     } else if (!strcmp(argv[c], "-progress")) {
       show_progress = 1;
     } else if (!strcmp(argv[c], "-quiet")) {
@@ -883,7 +880,8 @@ int main(int argc, const char *argv[]) {
         if (i == kNumTokens) {
           fprintf(stderr, "Error! Unknown metadata type '%.*s'\n",
                   (int)(token - start), start);
-          FREE_WARGV_AND_RETURN(-1);
+          HelpLong();
+          return -1;
         }
         start = token + 1;
       }
@@ -897,19 +895,19 @@ int main(int argc, const char *argv[]) {
     } else if (!strcmp(argv[c], "-v")) {
       verbose = 1;
     } else if (!strcmp(argv[c], "--")) {
-      if (c < argc - 1) in_file = (const char*)GET_WARGV(argv, ++c);
+      if (c < argc - 1) in_file = argv[++c];
       break;
     } else if (argv[c][0] == '-') {
       fprintf(stderr, "Error! Unknown option '%s'\n", argv[c]);
       HelpLong();
-      FREE_WARGV_AND_RETURN(-1);
+      return -1;
     } else {
-      in_file = (const char*)GET_WARGV(argv, c);
+      in_file = argv[c];
     }
 
     if (parse_error) {
       HelpLong();
-      FREE_WARGV_AND_RETURN(-1);
+      return -1;
     }
   }
   if (in_file == NULL) {
@@ -959,8 +957,7 @@ int main(int argc, const char *argv[]) {
   }
   if (!ReadPicture(in_file, &picture, keep_alpha,
                    (keep_metadata == 0) ? NULL : &metadata)) {
-    WFPRINTF(stderr, "Error! Cannot read input picture file '%s'\n",
-             (const W_CHAR*)in_file);
+    fprintf(stderr, "Error! Cannot read input picture file '%s'\n", in_file);
     goto Error;
   }
   picture.progress_hook = (show_progress && !quiet) ? ProgressReport : NULL;
@@ -976,15 +973,14 @@ int main(int argc, const char *argv[]) {
 
   // Open the output
   if (out_file != NULL) {
-    const int use_stdout = !WSTRCMP(out_file, "-");
-    out = use_stdout ? ImgIoUtilSetBinaryMode(stdout) : WFOPEN(out_file, "wb");
+    const int use_stdout = !strcmp(out_file, "-");
+    out = use_stdout ? ImgIoUtilSetBinaryMode(stdout) : fopen(out_file, "wb");
     if (out == NULL) {
-      WFPRINTF(stderr, "Error! Cannot open output file '%s'\n",
-               (const W_CHAR*)out_file);
+      fprintf(stderr, "Error! Cannot open output file '%s'\n", out_file);
       goto Error;
     } else {
       if (!short_output && !quiet) {
-        WFPRINTF(stderr, "Saving file '%s'\n", (const W_CHAR*)out_file);
+        fprintf(stderr, "Saving file '%s'\n", out_file);
       }
     }
     if (keep_metadata == 0) {
@@ -1018,53 +1014,10 @@ int main(int argc, const char *argv[]) {
     }
   }
   if ((resize_w | resize_h) > 0) {
-    WebPPicture picture_no_alpha;
-    if (config.exact) {
-      // If -exact, we can't premultiply RGB by A otherwise RGB is lost if A=0.
-      // We rescale an opaque copy and assemble scaled A and non-premultiplied
-      // RGB channels. This is slower but it's a very uncommon use case. Color
-      // leak at sharp alpha edges is possible.
-      if (!WebPPictureCopy(&picture, &picture_no_alpha)) {
-        fprintf(stderr, "Error! Cannot copy temporary picture\n");
-        goto Error;
-      }
-
-      // We enforced picture.use_argb = 1 above. Now, remove the alpha values.
-      {
-        int x, y;
-        uint32_t* argb_no_alpha = picture_no_alpha.argb;
-        for (y = 0; y < picture_no_alpha.height; ++y) {
-          for (x = 0; x < picture_no_alpha.width; ++x) {
-            argb_no_alpha[x] |= 0xff000000;  // Opaque copy.
-          }
-          argb_no_alpha += picture_no_alpha.argb_stride;
-        }
-      }
-
-      if (!WebPPictureRescale(&picture_no_alpha, resize_w, resize_h)) {
-        fprintf(stderr, "Error! Cannot resize temporary picture\n");
-        goto Error;
-      }
-    }
-
     if (!WebPPictureRescale(&picture, resize_w, resize_h)) {
       fprintf(stderr, "Error! Cannot resize picture\n");
       goto Error;
     }
-
-    if (config.exact) {  // Put back the alpha information.
-      int x, y;
-      uint32_t* argb_no_alpha = picture_no_alpha.argb;
-      uint32_t* argb = picture.argb;
-      for (y = 0; y < picture_no_alpha.height; ++y) {
-        for (x = 0; x < picture_no_alpha.width; ++x) {
-          argb[x] = (argb[x] & 0xff000000) | (argb_no_alpha[x] & 0x00ffffff);
-        }
-        argb_no_alpha += picture_no_alpha.argb_stride;
-        argb += picture.argb_stride;
-      }
-      WebPPictureFree(&picture_no_alpha);
-    }
   }
   if (verbose && (crop != 0 || (resize_w | resize_h) > 0)) {
     const double preproc_time = StopwatchReadAndReset(&stop_watch);
@@ -1096,11 +1049,9 @@ int main(int argc, const char *argv[]) {
   // Write info
   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.");
     } else if (!DumpPicture(&picture, dump_file)) {
-      WFPRINTF(stderr, "Warning, couldn't dump picture %s\n",
-               (const W_CHAR*)dump_file);
+      fprintf(stderr, "Warning, couldn't dump picture %s\n", dump_file);
     }
   }
 
@@ -1176,7 +1127,7 @@ int main(int argc, const char *argv[]) {
     fclose(out);
   }
 
-  FREE_WARGV_AND_RETURN(return_value);
+  return return_value;
 }
 
 //------------------------------------------------------------------------------

examples/dwebp.c

@@ -24,7 +24,6 @@
 #include "../imageio/image_enc.h"
 #include "../imageio/webpdec.h"
 #include "./stopwatch.h"
-#include "./unicode.h"
 
 static int verbose = 0;
 static int quiet = 0;
@@ -43,7 +42,7 @@ extern void* VP8GetCPUInfo;   // opaque forward declaration.
 
 static int SaveOutput(const WebPDecBuffer* const buffer,
                       WebPOutputFileFormat format, const char* const out_file) {
-  const int use_stdout = (out_file != NULL) && !WSTRCMP(out_file, "-");
+  const int use_stdout = (out_file != NULL) && !strcmp(out_file, "-");
   int ok = 1;
   Stopwatch stop_watch;
 
@@ -57,7 +56,7 @@ static int SaveOutput(const WebPDecBuffer* const buffer,
       if (use_stdout) {
         fprintf(stderr, "Saved to stdout\n");
       } else {
-        WFPRINTF(stderr, "Saved file %s\n", (const W_CHAR*)out_file);
+        fprintf(stderr, "Saved file %s\n", out_file);
       }
     }
     if (verbose) {
@@ -68,7 +67,7 @@ static int SaveOutput(const WebPDecBuffer* const buffer,
     if (use_stdout) {
       fprintf(stderr, "Error writing to stdout !!\n");
     } else {
-      WFPRINTF(stderr, "Error writing file %s !!\n", (const W_CHAR*)out_file);
+      fprintf(stderr, "Error writing file %s !!\n", out_file);
     }
   }
   return ok;
@@ -192,20 +191,18 @@ int main(int argc, const char *argv[]) {
   int incremental = 0;
   int c;
 
-  INIT_WARGV(argc, argv);
-
   if (!WebPInitDecoderConfig(&config)) {
     fprintf(stderr, "Library version mismatch!\n");
-    FREE_WARGV_AND_RETURN(-1);
+    return -1;
   }
 
   for (c = 1; c < argc; ++c) {
     int parse_error = 0;
     if (!strcmp(argv[c], "-h") || !strcmp(argv[c], "-help")) {
       Help();
-      FREE_WARGV_AND_RETURN(0);
+      return 0;
     } else if (!strcmp(argv[c], "-o") && c < argc - 1) {
-      out_file = (const char*)GET_WARGV(argv, ++c);
+      out_file = argv[++c];
     } else if (!strcmp(argv[c], "-alpha")) {
       format = ALPHA_PLANE_ONLY;
     } else if (!strcmp(argv[c], "-nofancy")) {
@@ -226,7 +223,7 @@ int main(int argc, const char *argv[]) {
       const int version = WebPGetDecoderVersion();
       printf("%d.%d.%d\n",
              (version >> 16) & 0xff, (version >> 8) & 0xff, version & 0xff);
-      FREE_WARGV_AND_RETURN(0);
+      return 0;
     } else if (!strcmp(argv[c], "-pgm")) {
       format = PGM;
     } else if (!strcmp(argv[c], "-yuv")) {
@@ -287,26 +284,26 @@ int main(int argc, const char *argv[]) {
     } else if (!strcmp(argv[c], "-incremental")) {
       incremental = 1;
     } else if (!strcmp(argv[c], "--")) {
-      if (c < argc - 1) in_file = (const char*)GET_WARGV(argv, ++c);
+      if (c < argc - 1) in_file = argv[++c];
       break;
     } else if (argv[c][0] == '-') {
       fprintf(stderr, "Unknown option '%s'\n", argv[c]);
       Help();
-      FREE_WARGV_AND_RETURN(-1);
+      return -1;
     } else {
-      in_file = (const char*)GET_WARGV(argv, c);
+      in_file = argv[c];
     }
 
     if (parse_error) {
       Help();
-      FREE_WARGV_AND_RETURN(-1);
+      return -1;
     }
   }
 
   if (in_file == NULL) {
     fprintf(stderr, "missing input file!!\n");
     Help();
-    FREE_WARGV_AND_RETURN(-1);
+    return -1;
   }
 
   if (quiet) verbose = 0;
@@ -315,7 +312,7 @@ int main(int argc, const char *argv[]) {
     VP8StatusCode status = VP8_STATUS_OK;
     size_t data_size = 0;
     if (!LoadWebP(in_file, &data, &data_size, bitstream)) {
-      FREE_WARGV_AND_RETURN(-1);
+      return -1;
     }
 
     switch (format) {
@@ -392,18 +389,18 @@ int main(int argc, const char *argv[]) {
 
   if (out_file != NULL) {
     if (!quiet) {
-      WFPRINTF(stderr, "Decoded %s.", (const W_CHAR*)in_file);
-      fprintf(stderr, " Dimensions: %d x %d %s. Format: %s. Now saving...\n",
-              output_buffer->width, output_buffer->height,
+      fprintf(stderr, "Decoded %s. Dimensions: %d x %d %s. Format: %s. "
+                      "Now saving...\n",
+              in_file, output_buffer->width, output_buffer->height,
               bitstream->has_alpha ? " (with alpha)" : "",
               kFormatType[bitstream->format]);
     }
     ok = SaveOutput(output_buffer, format, out_file);
   } else {
     if (!quiet) {
-      WFPRINTF(stderr, "File %s can be decoded ", (const W_CHAR*)in_file);
-      fprintf(stderr, "(dimensions: %d x %d %s. Format: %s).\n",
-              output_buffer->width, output_buffer->height,
+      fprintf(stderr, "File %s can be decoded "
+                      "(dimensions: %d x %d %s. Format: %s).\n",
+              in_file, output_buffer->width, output_buffer->height,
               bitstream->has_alpha ? " (with alpha)" : "",
               kFormatType[bitstream->format]);
       fprintf(stderr, "Nothing written; "
@@ -414,7 +411,7 @@ int main(int argc, const char *argv[]) {
   WebPFreeDecBuffer(output_buffer);
   free((void*)external_buffer);
   free((void*)data);
-  FREE_WARGV_AND_RETURN(ok ? 0 : -1);
+  return ok ? 0 : -1;
 }
 
 //------------------------------------------------------------------------------

examples/example_util.c

@@ -12,14 +12,10 @@
 
 #include "./example_util.h"
 
-#include <assert.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 
-#include "webp/mux_types.h"
-#include "../imageio/imageio_util.h"
-
 //------------------------------------------------------------------------------
 // String parsing
 
@@ -60,76 +56,3 @@ float ExUtilGetFloat(const char* const v, int* const error) {
   }
   return f;
 }
-
-//------------------------------------------------------------------------------
-
-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_);
-}
-
-void ExUtilDeleteCommandLineArguments(CommandLineArguments* const args) {
-  if (args != NULL) {
-    if (args->own_argv_) {
-      free((void*)args->argv_);
-      WebPDataClear(&args->argv_data_);
-    }
-    ResetCommandLineArguments(0, NULL, args);
-  }
-}
-
-#define MAX_ARGC 16384
-int ExUtilInitCommandLineArguments(int argc, const char* argv[],
-                                   CommandLineArguments* const args) {
-  if (args == NULL || argv == NULL) return 0;
-  ResetCommandLineArguments(argc, argv, args);
-  if (argc == 1 && argv[0][0] != '-') {
-    char* cur;
-    const char sep[] = " \t\r\n\f\v";
-
-#if defined(_WIN32) && defined(_UNICODE)
-    fprintf(stderr,
-            "Error: Reading arguments from a file is a feature unavailable "
-            "with Unicode binaries.\n");
-    return 0;
-#endif
-
-    if (!ExUtilReadFileToWebPData(argv[0], &args->argv_data_)) {
-      return 0;
-    }
-    args->own_argv_ = 1;
-    args->argv_ = (const char**)malloc(MAX_ARGC * sizeof(*args->argv_));
-    if (args->argv_ == NULL) return 0;
-
-    argc = 0;
-    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);
-        return 0;
-      }
-      assert(strlen(cur) != 0);
-      args->argv_[argc++] = cur;
-    }
-    args->argc_ = argc;
-  }
-  return 1;
-}
-
-//------------------------------------------------------------------------------
-
-int ExUtilReadFileToWebPData(const char* const filename,
-                             WebPData* const webp_data) {
-  const uint8_t* data;
-  size_t size;
-  if (webp_data == NULL) return 0;
-  if (!ImgIoUtilReadFile(filename, &data, &size)) return 0;
-  webp_data->bytes = data;
-  webp_data->size = size;
-  return 1;
-}

examples/example_util.h

@@ -14,7 +14,6 @@
 #define WEBP_EXAMPLES_EXAMPLE_UTIL_H_
 
 #include "webp/types.h"
-#include "webp/mux_types.h"
 
 #ifdef __cplusplus
 extern "C" {
@@ -36,33 +35,6 @@ float ExUtilGetFloat(const char* const v, int* const error);
 // actually parsed is returned, or -1 if an error occurred.
 int ExUtilGetInts(const char* v, int base, int max_output, int output[]);
 
-// Reads a file named 'filename' into a WebPData structure. The content of
-// webp_data is overwritten. Returns false in case of error.
-int ExUtilReadFileToWebPData(const char* const filename,
-                             WebPData* const webp_data);
-
-//------------------------------------------------------------------------------
-// Command-line arguments
-
-typedef struct {
-  int argc_;
-  const char** argv_;
-  WebPData argv_data_;
-  int own_argv_;
-} CommandLineArguments;
-
-// Initializes the structure from the command-line parameters. If there is
-// only one parameter and it does not start with a '-', then it is assumed to
-// be a file name. This file will be read and tokenized into command-line
-// arguments. The content of 'args' is overwritten.
-// Returns false in case of error (memory allocation failure, non
-// existing file, too many arguments, ...).
-int ExUtilInitCommandLineArguments(int argc, const char* argv[],
-                                   CommandLineArguments* const args);
-
-// Deallocate all memory and reset 'args'.
-void ExUtilDeleteCommandLineArguments(CommandLineArguments* const args);
-
 #ifdef __cplusplus
 }    // extern "C"
 #endif

examples/gif2webp.c

@@ -23,22 +23,12 @@
 
 #ifdef WEBP_HAVE_GIF
 
-#if defined(HAVE_UNISTD_H) && HAVE_UNISTD_H
-#include <unistd.h>
-#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"
-
-#if !defined(STDIN_FILENO)
-#define STDIN_FILENO 0
-#endif
 
 //------------------------------------------------------------------------------
 
@@ -82,10 +72,8 @@ static void Help(void) {
   printf("  -metadata <string> ..... comma separated list of metadata to\n");
   printf("                           ");
   printf("copy from the input to the output if present\n");
-  printf("                           ");
-  printf("Valid values: all, none, icc, xmp (default)\n");
-  printf("  -loop_compatibility .... use compatibility mode for Chrome\n");
-  printf("                           version prior to M62 (inclusive)\n");
+  printf("                           "
+         "Valid values: all, none, icc, xmp (default)\n");
   printf("  -mt .................... use multi-threading if available\n");
   printf("\n");
   printf("  -version ............... print version number and exit\n");
@@ -101,7 +89,8 @@ 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 char *in_file = NULL, *out_file = NULL;
+  FILE* out = NULL;
   GifFileType* gif = NULL;
   int frame_duration = 0;
   int frame_timestamp = 0;
@@ -115,7 +104,7 @@ int main(int argc, const char *argv[]) {
   WebPAnimEncoderOptions enc_options;
   WebPConfig config;
 
-  int frame_number = 0;     // Whether we are processing the first frame.
+  int is_first_frame = 1;     // Whether we are processing the first frame.
   int done;
   int c;
   int quiet = 0;
@@ -126,21 +115,18 @@ int main(int argc, const char *argv[]) {
   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
+  int loop_count = 0;
   int stored_loop_count = 0;  // Whether we have found an explicit loop count.
-  int loop_compatibility = 0;
   WebPMux* mux = NULL;
 
   int default_kmin = 1;  // Whether to use default kmin value.
   int default_kmax = 1;
 
-  INIT_WARGV(argc, argv);
-
   if (!WebPConfigInit(&config) || !WebPAnimEncoderOptionsInit(&enc_options) ||
       !WebPPictureInit(&frame) || !WebPPictureInit(&curr_canvas) ||
       !WebPPictureInit(&prev_canvas)) {
     fprintf(stderr, "Error! Version mismatch!\n");
-    FREE_WARGV_AND_RETURN(-1);
+    return -1;
   }
   config.lossless = 1;  // Use lossless compression by default.
 
@@ -150,23 +136,21 @@ int main(int argc, const char *argv[]) {
 
   if (argc == 1) {
     Help();
-    FREE_WARGV_AND_RETURN(0);
+    return 0;
   }
 
   for (c = 1; c < argc; ++c) {
     int parse_error = 0;
     if (!strcmp(argv[c], "-h") || !strcmp(argv[c], "-help")) {
       Help();
-      FREE_WARGV_AND_RETURN(0);
+      return 0;
     } else if (!strcmp(argv[c], "-o") && c < argc - 1) {
-      out_file = GET_WARGV(argv, ++c);
+      out_file = argv[++c];
     } else if (!strcmp(argv[c], "-lossy")) {
       config.lossless = 0;
     } else if (!strcmp(argv[c], "-mixed")) {
       enc_options.allow_mixed = 1;
       config.lossless = 0;
-    } else if (!strcmp(argv[c], "-loop_compatibility")) {
-      loop_compatibility = 1;
     } else if (!strcmp(argv[c], "-q") && c < argc - 1) {
       config.quality = ExUtilGetFloat(argv[++c], &parse_error);
     } else if (!strcmp(argv[c], "-m") && c < argc - 1) {
@@ -216,7 +200,7 @@ int main(int argc, const char *argv[]) {
           fprintf(stderr, "Error! Unknown metadata type '%.*s'\n",
                   (int)(token - start), start);
           Help();
-          FREE_WARGV_AND_RETURN(-1);
+          return -1;
         }
         start = token + 1;
       }
@@ -229,7 +213,7 @@ int main(int argc, const char *argv[]) {
              (enc_version >> 16) & 0xff, (enc_version >> 8) & 0xff,
              enc_version & 0xff, (mux_version >> 16) & 0xff,
              (mux_version >> 8) & 0xff, mux_version & 0xff);
-      FREE_WARGV_AND_RETURN(0);
+      return 0;
     } else if (!strcmp(argv[c], "-quiet")) {
       quiet = 1;
       enc_options.verbose = 0;
@@ -237,19 +221,19 @@ int main(int argc, const char *argv[]) {
       verbose = 1;
       enc_options.verbose = 1;
     } else if (!strcmp(argv[c], "--")) {
-      if (c < argc - 1) in_file = GET_WARGV(argv, ++c);
+      if (c < argc - 1) in_file = argv[++c];
       break;
     } else if (argv[c][0] == '-') {
       fprintf(stderr, "Error! Unknown option '%s'\n", argv[c]);
       Help();
-      FREE_WARGV_AND_RETURN(-1);
+      return -1;
     } else {
-      in_file = GET_WARGV(argv, c);
+      in_file = argv[c];
     }
 
     if (parse_error) {
       Help();
-      FREE_WARGV_AND_RETURN(-1);
+      return -1;
     }
   }
 
@@ -273,7 +257,11 @@ int main(int argc, const char *argv[]) {
   }
 
   // Start the decoder object
-  gif = DGifOpenFileUnicode(in_file, &gif_error);
+#if LOCAL_GIF_PREREQ(5,0)
+  gif = DGifOpenFileName(in_file, &gif_error);
+#else
+  gif = DGifOpenFileName(in_file);
+#endif
   if (gif == NULL) goto End;
 
   // Loop over GIF images
@@ -289,7 +277,7 @@ int main(int argc, const char *argv[]) {
 
         if (!DGifGetImageDesc(gif)) goto End;
 
-        if (frame_number == 0) {
+        if (is_first_frame) {
           if (verbose) {
             printf("Canvas screen: %d x %d\n", gif->SWidth, gif->SHeight);
           }
@@ -331,6 +319,7 @@ int main(int argc, const char *argv[]) {
                     "a memory error.\n");
             goto End;
           }
+          is_first_frame = 0;
         }
 
         // Some even more broken GIF can have sub-rect with zero width/height.
@@ -347,25 +336,13 @@ int main(int argc, const char *argv[]) {
         GIFBlendFrames(&frame, &gif_rect, &curr_canvas);
 
         if (!WebPAnimEncoderAdd(enc, &curr_canvas, frame_timestamp, &config)) {
-          fprintf(stderr, "Error while adding frame #%d: %s\n", frame_number,
-                  WebPAnimEncoderGetError(enc));
-          goto End;
-        } else {
-          ++frame_number;
+          fprintf(stderr, "%s\n", WebPAnimEncoderGetError(enc));
         }
 
         // Update canvases.
         GIFDisposeFrame(orig_dispose, &gif_rect, &prev_canvas, &curr_canvas);
         GIFCopyPixels(&curr_canvas, &prev_canvas);
 
-        // Force frames with a small or no duration to 100ms to be consistent
-        // with web browsers and other transcoding tools. This also avoids
-        // incorrect durations between frames when padding frames are
-        // discarded.
-        if (frame_duration <= 10) {
-          frame_duration = 100;
-        }
-
         // Update timestamp (for next frame).
         frame_timestamp += frame_duration;
 
@@ -409,7 +386,7 @@ int main(int argc, const char *argv[]) {
               if (verbose) {
                 fprintf(stderr, "Loop count: %d\n", loop_count);
               }
-              stored_loop_count = loop_compatibility ? (loop_count != 0) : 1;
+              stored_loop_count = (loop_count != 0);
             } else {  // An extension containing metadata.
               // We only store the first encountered chunk of each type, and
               // only if requested by the user.
@@ -466,23 +443,6 @@ int main(int argc, const char *argv[]) {
     goto End;
   }
 
-  if (!loop_compatibility) {
-    if (!stored_loop_count) {
-      // if no loop-count element is seen, the default is '1' (loop-once)
-      // and we need to signal it explicitly in WebP. Note however that
-      // in case there's a single frame, we still don't need to store it.
-      if (frame_number > 1) {
-        stored_loop_count = 1;
-        loop_count = 1;
-      }
-    } else if (loop_count > 0 && loop_count < 65535) {
-      // adapt GIF's semantic to WebP's (except in the infinite-loop case)
-      loop_count += 1;
-    }
-  }
-  // loop_count of 0 is the default (infinite), so no need to signal it
-  if (loop_count == 0) stored_loop_count = 0;
-
   if (stored_loop_count || stored_icc || stored_xmp) {
     // Re-mux to add loop count and/or metadata as needed.
     mux = WebPMuxCreate(&webp_data, 1);
@@ -542,19 +502,13 @@ int main(int argc, const char *argv[]) {
   }
 
   if (out_file != NULL) {
-    if (!ImgIoUtilWriteFile((const char*)out_file, webp_data.bytes,
-                            webp_data.size)) {
-      WFPRINTF(stderr, "Error writing output file: %s\n", out_file);
+    if (!ImgIoUtilWriteFile(out_file, webp_data.bytes, webp_data.size)) {
+      fprintf(stderr, "Error writing output file: %s\n", out_file);
       goto End;
     }
     if (!quiet) {
-      if (!WSTRCMP(out_file, "-")) {
-        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);
-      }
+      fprintf(stderr, "Saved output file (%d bytes): %s\n",
+              (int)webp_data.size, out_file);
     }
   } else {
     if (!quiet) {
@@ -576,6 +530,7 @@ int main(int argc, const char *argv[]) {
   WebPPictureFree(&curr_canvas);
   WebPPictureFree(&prev_canvas);
   WebPAnimEncoderDelete(enc);
+  if (out != NULL && out_file != NULL) fclose(out);
 
   if (gif_error != GIF_OK) {
     GIFDisplayError(gif, gif_error);
@@ -588,7 +543,7 @@ int main(int argc, const char *argv[]) {
 #endif
   }
 
-  FREE_WARGV_AND_RETURN(!ok);
+  return !ok;
 }
 
 #else  // !WEBP_HAVE_GIF

examples/img2webp.c

@@ -27,7 +27,6 @@
 #include "../imageio/image_dec.h"
 #include "../imageio/imageio_util.h"
 #include "./stopwatch.h"
-#include "./unicode.h"
 #include "webp/encode.h"
 #include "webp/mux.h"
 
@@ -49,7 +48,6 @@ static void Help(void) {
   printf(" -mixed ............... use mixed lossy/lossless automatic mode\n");
   printf(" -v ................... verbose mode\n");
   printf(" -h ................... this help\n");
-  printf(" -version ............. print version number and exit\n");
   printf("\n");
 
   printf("Per-frame options (only used for subsequent images input):\n");
@@ -62,10 +60,6 @@ static void Help(void) {
   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");
 }
 
 //------------------------------------------------------------------------------
@@ -123,13 +117,14 @@ static int SetLoopCount(int loop_count, WebPData* const webp_data) {
 
 //------------------------------------------------------------------------------
 
-int main(int argc, const char* argv[]) {
+int main(int argc, char* argv[]) {
   const char* output = NULL;
   WebPAnimEncoder* enc = NULL;
   int verbose = 0;
   int pic_num = 0;
   int duration = 100;
   int timestamp_ms = 0;
+  int ok = 1;
   int loop_count = 0;
   int width = 0, height = 0;
   WebPAnimEncoderOptions anim_config;
@@ -138,33 +133,22 @@ int main(int argc, const char* argv[]) {
   WebPData webp_data;
   int c;
   int have_input = 0;
-  CommandLineArguments cmd_args;
-  int ok;
-
-  INIT_WARGV(argc, argv);
-
-  ok = ExUtilInitCommandLineArguments(argc - 1, argv + 1, &cmd_args);
-  if (!ok) FREE_WARGV_AND_RETURN(1);
-
-  argc = cmd_args.argc_;
-  argv = cmd_args.argv_;
 
   WebPDataInit(&webp_data);
   if (!WebPAnimEncoderOptionsInit(&anim_config) ||
       !WebPConfigInit(&config) ||
       !WebPPictureInit(&pic)) {
     fprintf(stderr, "Library version mismatch!\n");
-    ok = 0;
-    goto End;
+    return 1;
   }
 
   // 1st pass of option parsing
-  for (c = 0; ok && c < argc; ++c) {
+  for (c = 1; ok && c < argc; ++c) {
     if (argv[c][0] == '-') {
       int parse_error = 0;
       if (!strcmp(argv[c], "-o") && c + 1 < argc) {
         argv[c] = NULL;
-        output = (const char*)GET_WARGV_SHIFTED(argv, ++c);
+        output = argv[++c];
       } else if (!strcmp(argv[c], "-kmin") && c + 1 < argc) {
         argv[c] = NULL;
         anim_config.kmin = ExUtilGetInt(argv[++c], 0, &parse_error);
@@ -187,15 +171,7 @@ int main(int argc, const char* argv[]) {
         verbose = 1;
       } else if (!strcmp(argv[c], "-h") || !strcmp(argv[c], "-help")) {
         Help();
-        goto End;
-      } else if (!strcmp(argv[c], "-version")) {
-        const int enc_version = WebPGetEncoderVersion();
-        const int mux_version = WebPGetMuxVersion();
-        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);
-        goto End;
+        return 0;
       } else {
         continue;
       }
@@ -208,13 +184,13 @@ int main(int argc, const char* argv[]) {
   }
   if (!have_input) {
     fprintf(stderr, "No input file(s) for generating animation!\n");
-    goto End;
+    return 0;
   }
 
   // image-reading pass
   pic_num = 0;
   config.lossless = 1;
-  for (c = 0; ok && c < argc; ++c) {
+  for (c = 1; ok && c < argc; ++c) {
     if (argv[c] == NULL) continue;
     if (argv[c][0] == '-') {    // parse local options
       int parse_error = 0;
@@ -251,7 +227,7 @@ 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);
+    ok = ReadImage(argv[c], &pic);
     if (!ok) goto End;
 
     if (enc == NULL) {
@@ -283,8 +259,8 @@ 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));
+      fprintf(stderr, "Added frame #%3d at time %4d (file: %s)\n",
+              pic_num, timestamp_ms, argv[c]);
     }
     timestamp_ms += duration;
     ++pic_num;
@@ -308,7 +284,7 @@ int main(int argc, const char* argv[]) {
   if (ok) {
     if (output != NULL) {
       ok = ImgIoUtilWriteFile(output, webp_data.bytes, webp_data.size);
-      if (ok) WFPRINTF(stderr, "output file: %s     ", (const W_CHAR*)output);
+      if (ok) fprintf(stderr, "output file: %s     ", output);
     } else {
       fprintf(stderr, "[no output file specified]   ");
     }
@@ -318,7 +294,7 @@ int main(int argc, const char* argv[]) {
     fprintf(stderr, "[%d frames, %u bytes].\n",
             pic_num, (unsigned int)webp_data.size);
   }
+
   WebPDataClear(&webp_data);
-  ExUtilDeleteCommandLineArguments(&cmd_args);
-  FREE_WARGV_AND_RETURN(ok ? 0 : 1);
+  return ok ? 0 : 1;
 }

examples/stopwatch.h

@@ -60,4 +60,4 @@ static WEBP_INLINE double StopwatchReadAndReset(Stopwatch* watch) {
 
 #endif   /* _WIN32 */
 
-#endif  // WEBP_EXAMPLES_STOPWATCH_H_
+#endif  /* WEBP_EXAMPLES_STOPWATCH_H_ */

examples/unicode.h

@@ -1,102 +0,0 @@
-// Copyright 2018 Google Inc. All Rights Reserved.
-//
-// Use of this source code is governed by a BSD-style license
-// that can be found in the COPYING file in the root of the source
-// tree. An additional intellectual property rights grant can be found
-// in the file PATENTS. All contributing project authors may
-// be found in the AUTHORS file in the root of the source tree.
-// -----------------------------------------------------------------------------
-//
-// Unicode support for Windows. The main idea is to maintain an array of Unicode
-// arguments (wargv) and use it only for file paths. The regular argv is used
-// for everything else.
-//
-// Author: Yannis Guyon (yguyon@google.com)
-
-#ifndef WEBP_EXAMPLES_UNICODE_H_
-#define WEBP_EXAMPLES_UNICODE_H_
-
-#if defined(_WIN32) && defined(_UNICODE)
-
-// wchar_t is used instead of TCHAR because we only perform additional work when
-// Unicode is enabled and because the output of CommandLineToArgvW() is wchar_t.
-
-#include <wchar.h>
-#include <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);                                              \
-    }                                                                         \
-  } while (0)
-
-// Use this to get a Unicode argument (e.g. file path).
-#define GET_WARGV(UNUSED, C) wargv[C]
-// For cases where argv is shifted by one compared to wargv.
-#define GET_WARGV_SHIFTED(UNUSED, C) wargv[(C) + 1]
-#define GET_WARGV_OR_NULL() wargv
-
-// Release resources. LocalFree() is needed after CommandLineToArgvW().
-#define FREE_WARGV() LOCAL_FREE((W_CHAR** const)wargv)
-#define LOCAL_FREE(WARGV)                  \
-  do {                                     \
-    if ((WARGV) != NULL) LocalFree(WARGV); \
-  } while (0)
-
-#define W_CHAR wchar_t  // WCHAR without underscore might already be defined.
-#define TO_W_CHAR(STR) (L##STR)
-
-#define WFOPEN(ARG, OPT) _wfopen((const W_CHAR*)ARG, TO_W_CHAR(OPT))
-
-#define WPRINTF(STR, ...) wprintf(TO_W_CHAR(STR), __VA_ARGS__)
-#define WFPRINTF(STDERR, STR, ...) fwprintf(STDERR, TO_W_CHAR(STR), __VA_ARGS__)
-
-#define WSTRLEN(FILENAME) wcslen((const W_CHAR*)FILENAME)
-#define WSTRCMP(FILENAME, STR) wcscmp((const W_CHAR*)FILENAME, TO_W_CHAR(STR))
-#define WSTRRCHR(FILENAME, STR) wcsrchr((const W_CHAR*)FILENAME, TO_W_CHAR(STR))
-#define WSNPRINTF(A, B, STR, ...) _snwprintf(A, B, TO_W_CHAR(STR), __VA_ARGS__)
-
-#else
-
-// Unicode file paths work as is on Unix platforms, and no extra work is done on
-// Windows either if Unicode is disabled.
-
-#define INIT_WARGV(ARGC, ARGV)
-
-#define GET_WARGV(ARGV, C) (ARGV)[C]
-#define GET_WARGV_SHIFTED(ARGV, C) (ARGV)[C]
-#define GET_WARGV_OR_NULL() NULL
-
-#define FREE_WARGV()
-#define LOCAL_FREE(WARGV)
-
-#define W_CHAR char
-#define TO_W_CHAR(STR) (STR)
-
-#define WFOPEN(ARG, OPT) fopen(ARG, OPT)
-
-#define WPRINTF(STR, ...) printf(STR, __VA_ARGS__)
-#define WFPRINTF(STDERR, STR, ...) fprintf(STDERR, STR, __VA_ARGS__)
-
-#define WSTRLEN(FILENAME) strlen(FILENAME)
-#define WSTRCMP(FILENAME, STR) strcmp(FILENAME, STR)
-#define WSTRRCHR(FILENAME, STR) strrchr(FILENAME, STR)
-#define WSNPRINTF(A, B, STR, ...) snprintf(A, B, STR, __VA_ARGS__)
-
-#endif  // defined(_WIN32) && defined(_UNICODE)
-
-// Don't forget to free wargv before returning (e.g. from main).
-#define FREE_WARGV_AND_RETURN(VALUE) \
-  do {                               \
-    FREE_WARGV();                    \
-    return (VALUE);                  \
-  } while (0)
-
-#endif  // WEBP_EXAMPLES_UNICODE_H_

examples/unicode_gif.h

@@ -1,75 +0,0 @@
-// Copyright 2018 Google Inc. All Rights Reserved.
-//
-// Use of this source code is governed by a BSD-style license
-// that can be found in the COPYING file in the root of the source
-// tree. An additional intellectual property rights grant can be found
-// in the file PATENTS. All contributing project authors may
-// be found in the AUTHORS file in the root of the source tree.
-// -----------------------------------------------------------------------------
-//
-// giflib doesn't have a Unicode DGifOpenFileName(). Let's make one.
-//
-// Author: Yannis Guyon (yguyon@google.com)
-
-#ifndef WEBP_EXAMPLES_UNICODE_GIF_H_
-#define WEBP_EXAMPLES_UNICODE_GIF_H_
-
-#include "./unicode.h"
-#ifdef HAVE_CONFIG_H
-#include "webp/config.h"  // For WEBP_HAVE_GIF
-#endif
-
-#if defined(WEBP_HAVE_GIF)
-
-#ifdef _WIN32
-#include <fcntl.h>  // Not standard, needed for _topen and flags.
-#include <io.h>
-#endif
-
-#include <gif_lib.h>
-#include <string.h>
-#include "./gifdec.h"
-
-#if !defined(STDIN_FILENO)
-#define STDIN_FILENO 0
-#endif
-
-static GifFileType* DGifOpenFileUnicode(const W_CHAR* file_name, int* error) {
-  if (!WSTRCMP(file_name, "-")) {
-#if LOCAL_GIF_PREREQ(5, 0)
-    return DGifOpenFileHandle(STDIN_FILENO, error);
-#else
-    (void)error;
-    return DGifOpenFileHandle(STDIN_FILENO);
-#endif
-  }
-
-#if defined(_WIN32) && defined(_UNICODE)
-
-  int file_handle = _wopen(file_name, _O_RDONLY | _O_BINARY);
-  if (file_handle == -1) {
-    if (error != NULL) *error = D_GIF_ERR_OPEN_FAILED;
-    return NULL;
-  }
-
-#if LOCAL_GIF_PREREQ(5, 0)
-  return DGifOpenFileHandle(file_handle, error);
-#else
-  return DGifOpenFileHandle(file_handle);
-#endif
-
-#else
-
-#if LOCAL_GIF_PREREQ(5, 0)
-  return DGifOpenFileName(file_name, error);
-#else
-  return DGifOpenFileName(file_name);
-#endif
-
-#endif  // defined(_WIN32) && defined(_UNICODE)
-  // DGifCloseFile() is called later.
-}
-
-#endif  // defined(WEBP_HAVE_GIF)
-
-#endif  // WEBP_EXAMPLES_UNICODE_GIF_H_

examples/vwebp.c

@@ -42,7 +42,6 @@
 
 #include "../examples/example_util.h"
 #include "../imageio/imageio_util.h"
-#include "./unicode.h"
 
 #if defined(_MSC_VER) && _MSC_VER < 1900
 #define snprintf _snprintf
@@ -57,7 +56,6 @@ static struct {
   int print_info;
   int only_deltas;
   int use_color_profile;
-  int draw_anim_background_color;
 
   int canvas_width, canvas_height;
   int loop_count;
@@ -207,11 +205,6 @@ static void decode_callback(int what) {
         }
       }
       duration = curr->duration;
-      // Behavior copied from Chrome, cf:
-      // https://cs.chromium.org/chromium/src/third_party/WebKit/Source/
-      // platform/graphics/DeferredImageDecoder.cpp?
-      // rcl=b4c33049f096cd283f32be9a58b9a9e768227c26&l=246
-      if (duration <= 10) duration = 100;
     }
     if (!Decode()) {
       kParams.decoding_error = 1;
@@ -227,9 +220,6 @@ static void decode_callback(int what) {
 // Callbacks
 
 static void HandleKey(unsigned char key, int pos_x, int pos_y) {
-  // Note: rescaling the window or toggling some features during an animation
-  // generates visual artifacts. This is not fixed because refreshing the frame
-  // may require rendering the whole animation from start till current frame.
   (void)pos_x;
   (void)pos_y;
   if (key == 'q' || key == 'Q' || key == 27 /* Esc */) {
@@ -257,12 +247,10 @@ static void HandleKey(unsigned char key, int pos_x, int pos_y) {
         glutPostRedisplay();
       }
     }
-  } else if (key == 'b') {
-    kParams.draw_anim_background_color = 1 - kParams.draw_anim_background_color;
-    if (!kParams.has_animation) ClearPreviousFrame();
-    glutPostRedisplay();
   } else if (key == 'i') {
     kParams.print_info = 1 - kParams.print_info;
+    // TODO(skal): handle refresh of animation's last-frame too. It's quite
+    // more involved though (need to save the previous frame).
     if (!kParams.has_animation) ClearPreviousFrame();
     glutPostRedisplay();
   } else if (key == 'd') {
@@ -272,8 +260,8 @@ static void HandleKey(unsigned char key, int pos_x, int pos_y) {
 }
 
 static void HandleReshape(int width, int height) {
-  // Note: reshape doesn't preserve aspect ratio, and might
-  // be handling larger-than-screen pictures incorrectly.
+  // TODO(skal): should we preserve aspect ratio?
+  // Also: handle larger-than-screen pictures correctly.
   glViewport(0, 0, width, height);
   glMatrixMode(GL_PROJECTION);
   glLoadIdentity();
@@ -293,7 +281,7 @@ static void PrintString(const char* const text) {
 }
 
 static float GetColorf(uint32_t color, int shift) {
-  return ((color >> shift) & 0xff) / 255.f;
+  return (color >> shift) / 255.f;
 }
 
 static void DrawCheckerBoard(void) {
@@ -316,43 +304,6 @@ static void DrawCheckerBoard(void) {
   glPopMatrix();
 }
 
-static void DrawBackground(void) {
-  // Whole window cleared with clear color, checkerboard rendered on top of it.
-  glClear(GL_COLOR_BUFFER_BIT);
-  DrawCheckerBoard();
-
-  // ANIM background color rendered (blend) on top. Default is white for still
-  // images (without ANIM chunk). glClear() can't be used for that (no blend).
-  if (kParams.draw_anim_background_color) {
-    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, 24));
-    glRecti(-1, -1, +1, +1);
-    glPopMatrix();
-  }
-}
-
-// Draw background in a scissored rectangle.
-static void DrawBackgroundScissored(int window_x, int window_y, int frame_w,
-                                    int frame_h) {
-  // Only update the requested area, not the whole canvas.
-  window_x = window_x * kParams.viewport_width / kParams.canvas_width;
-  window_y = window_y * kParams.viewport_height / kParams.canvas_height;
-  frame_w = frame_w * kParams.viewport_width / kParams.canvas_width;
-  frame_h = frame_h * kParams.viewport_height / kParams.canvas_height;
-
-  // glScissor() takes window coordinates (0,0 at bottom left).
-  window_y = kParams.viewport_height - window_y - frame_h;
-
-  glEnable(GL_SCISSOR_TEST);
-  glScissor(window_x, window_y, frame_w, frame_h);
-  DrawBackground();
-  glDisable(GL_SCISSOR_TEST);
-}
-
 static void HandleDisplay(void) {
   const WebPDecBuffer* const pic = kParams.pic;
   const WebPIterator* const curr = &kParams.curr_frame;
@@ -369,21 +320,38 @@ static void HandleDisplay(void) {
   glPixelStorei(GL_UNPACK_ROW_LENGTH, pic->u.RGBA.stride / 4);
 
   if (kParams.only_deltas) {
-    DrawBackground();
-  } else {
-    // The rectangle of the previous frame might be different than the current
-    // frame, so we may need to DrawBackgroundScissored for both.
+    DrawCheckerBoard();
+  } else if (prev->dispose_method == WEBP_MUX_DISPOSE_BACKGROUND ||
+      curr->blend_method == WEBP_MUX_NO_BLEND) {
+    // glScissor() takes window coordinates (0,0 at bottom left).
+    int window_x, window_y;
+    int frame_w, frame_h;
     if (prev->dispose_method == WEBP_MUX_DISPOSE_BACKGROUND) {
       // Clear the previous frame rectangle.
-      DrawBackgroundScissored(prev->x_offset, prev->y_offset, prev->width,
-                              prev->height);
-    }
-    if (curr->blend_method == WEBP_MUX_NO_BLEND) {
+      window_x = prev->x_offset;
+      window_y = kParams.canvas_height - prev->y_offset - prev->height;
+      frame_w = prev->width;
+      frame_h = prev->height;
+    } else {  // curr->blend_method == WEBP_MUX_NO_BLEND.
       // We simulate no-blending behavior by first clearing the current frame
-      // rectangle and then alpha-blending against it.
-      DrawBackgroundScissored(curr->x_offset, curr->y_offset, curr->width,
-                              curr->height);
+      // rectangle (to a checker-board) and then alpha-blending against it.
+      window_x = curr->x_offset;
+      window_y = kParams.canvas_height - curr->y_offset - curr->height;
+      frame_w = curr->width;
+      frame_h = curr->height;
     }
+    glEnable(GL_SCISSOR_TEST);
+    // Only update the requested area, not the whole canvas.
+    window_x = window_x * kParams.viewport_width / kParams.canvas_width;
+    window_y = window_y * kParams.viewport_height / kParams.canvas_height;
+    frame_w = frame_w * kParams.viewport_width / kParams.canvas_width;
+    frame_h = frame_h * kParams.viewport_height / kParams.canvas_height;
+    glScissor(window_x, window_y, frame_w, frame_h);
+
+    glClear(GL_COLOR_BUFFER_BIT);  // use clear color
+    DrawCheckerBoard();
+
+    glDisable(GL_SCISSOR_TEST);
   }
 
   *prev = *curr;
@@ -410,36 +378,13 @@ static void HandleDisplay(void) {
     }
   }
   glPopMatrix();
-#if defined(__APPLE__) || defined(_WIN32)
-  glFlush();
-#else
   glutSwapBuffers();
-#endif
 }
 
 static void StartDisplay(void) {
-  int width = kParams.canvas_width;
-  int height = kParams.canvas_height;
-  int screen_width, screen_height;
-  // TODO(webp:365) GLUT_DOUBLE results in flickering / old frames to be
-  // partially displayed with animated webp + alpha.
-#if defined(__APPLE__) || defined(_WIN32)
-  glutInitDisplayMode(GLUT_RGBA);
-#else
+  const int width = kParams.canvas_width;
+  const int height = kParams.canvas_height;
   glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGBA);
-#endif
-  screen_width = glutGet(GLUT_SCREEN_WIDTH);
-  screen_height = glutGet(GLUT_SCREEN_HEIGHT);
-  if (width > screen_width || height > screen_height) {
-    if (width > screen_width) {
-      height = (height * screen_width + width - 1) / width;
-      width = screen_width;
-    }
-    if (height > screen_height) {
-      width = (width * screen_height + height - 1) / height;
-      height = screen_height;
-    }
-  }
   glutInitWindowSize(width, height);
   glutCreateWindow("WebP viewer");
   glutDisplayFunc(HandleDisplay);
@@ -448,35 +393,37 @@ static void StartDisplay(void) {
   glutKeyboardFunc(HandleKey);
   glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
   glEnable(GL_BLEND);
-  glClearColor(0, 0, 0, 0);  // window will be cleared to black (no blend)
-  DrawBackground();
+  glClearColor(GetColorf(kParams.bg_color, 0),
+               GetColorf(kParams.bg_color, 8),
+               GetColorf(kParams.bg_color, 16),
+               GetColorf(kParams.bg_color, 24));
+  glClear(GL_COLOR_BUFFER_BIT);
+  DrawCheckerBoard();
 }
 
 //------------------------------------------------------------------------------
 // Main
 
 static void Help(void) {
-  printf(
-      "Usage: vwebp in_file [options]\n\n"
-      "Decodes the WebP image file and visualize it using OpenGL\n"
-      "Options are:\n"
-      "  -version ..... print version number and exit\n"
-      "  -noicc ....... don't use the icc profile if present\n"
-      "  -nofancy ..... don't use the fancy YUV420 upscaler\n"
-      "  -nofilter .... disable in-loop filtering\n"
-      "  -dither <int>  dithering strength (0..100), default=50\n"
-      "  -noalphadither disable alpha plane dithering\n"
-      "  -usebgcolor .. display background color\n"
-      "  -mt .......... use multi-threading\n"
-      "  -info ........ print info\n"
-      "  -h ........... this help message\n"
-      "\n"
-      "Keyboard shortcuts:\n"
-      "  'c' ................ toggle use of color profile\n"
-      "  'b' ................ toggle background color display\n"
-      "  'i' ................ overlay file information\n"
-      "  'd' ................ disable blending & disposal (debug)\n"
-      "  'q' / 'Q' / ESC .... quit\n");
+  printf("Usage: vwebp in_file [options]\n\n"
+         "Decodes the WebP image file and visualize it using OpenGL\n"
+         "Options are:\n"
+         "  -version ..... print version number and exit\n"
+         "  -noicc ....... don't use the icc profile if present\n"
+         "  -nofancy ..... don't use the fancy YUV420 upscaler\n"
+         "  -nofilter .... disable in-loop filtering\n"
+         "  -dither <int>  dithering strength (0..100), default=50\n"
+         "  -noalphadither disable alpha plane dithering\n"
+         "  -mt .......... use multi-threading\n"
+         "  -info ........ print info\n"
+         "  -h ........... this help message\n"
+         "\n"
+         "Keyboard shortcuts:\n"
+         "  'c' ................ toggle use of color profile\n"
+         "  'i' ................ overlay file information\n"
+         "  'd' ................ disable blending & disposal (debug)\n"
+         "  'q' / 'Q' / ESC .... quit\n"
+        );
 }
 
 int main(int argc, char *argv[]) {
@@ -484,23 +431,19 @@ int main(int argc, char *argv[]) {
   WebPDecoderConfig* const config = &kParams.config;
   WebPIterator* const curr = &kParams.curr_frame;
 
-  INIT_WARGV(argc, argv);
-
   if (!WebPInitDecoderConfig(config)) {
     fprintf(stderr, "Library version mismatch!\n");
-    FREE_WARGV_AND_RETURN(-1);
+    return -1;
   }
   config->options.dithering_strength = 50;
   config->options.alpha_dithering_strength = 100;
   kParams.use_color_profile = 1;
-  // Background color hidden by default to see transparent areas.
-  kParams.draw_anim_background_color = 0;
 
   for (c = 1; c < argc; ++c) {
     int parse_error = 0;
     if (!strcmp(argv[c], "-h") || !strcmp(argv[c], "-help")) {
       Help();
-      FREE_WARGV_AND_RETURN(0);
+      return 0;
     } else if (!strcmp(argv[c], "-noicc")) {
       kParams.use_color_profile = 0;
     } else if (!strcmp(argv[c], "-nofancy")) {
@@ -509,8 +452,6 @@ int main(int argc, char *argv[]) {
       config->options.bypass_filtering = 1;
     } else if (!strcmp(argv[c], "-noalphadither")) {
       config->options.alpha_dithering_strength = 0;
-    } else if (!strcmp(argv[c], "-usebgcolor")) {
-      kParams.draw_anim_background_color = 1;
     } else if (!strcmp(argv[c], "-dither") && c + 1 < argc) {
       config->options.dithering_strength =
           ExUtilGetInt(argv[++c], 0, &parse_error);
@@ -523,30 +464,30 @@ int main(int argc, char *argv[]) {
              (dec_version >> 16) & 0xff, (dec_version >> 8) & 0xff,
              dec_version & 0xff, (dmux_version >> 16) & 0xff,
              (dmux_version >> 8) & 0xff, dmux_version & 0xff);
-      FREE_WARGV_AND_RETURN(0);
+      return 0;
     } else if (!strcmp(argv[c], "-mt")) {
       config->options.use_threads = 1;
     } else if (!strcmp(argv[c], "--")) {
-      if (c < argc - 1) kParams.file_name = (const char*)GET_WARGV(argv, ++c);
+      if (c < argc - 1) kParams.file_name = argv[++c];
       break;
     } else if (argv[c][0] == '-') {
       printf("Unknown option '%s'\n", argv[c]);
       Help();
-      FREE_WARGV_AND_RETURN(-1);
+      return -1;
     } else {
-      kParams.file_name = (const char*)GET_WARGV(argv, c);
+      kParams.file_name = argv[c];
     }
 
     if (parse_error) {
       Help();
-      FREE_WARGV_AND_RETURN(-1);
+      return -1;
     }
   }
 
   if (kParams.file_name == NULL) {
     printf("missing input file!!\n");
     Help();
-    FREE_WARGV_AND_RETURN(0);
+    return 0;
   }
 
   if (!ImgIoUtilReadFile(kParams.file_name,
@@ -621,11 +562,11 @@ int main(int argc, char *argv[]) {
 
   // Should only be reached when using FREEGLUT:
   ClearParams();
-  FREE_WARGV_AND_RETURN(0);
+  return 0;
 
  Error:
   ClearParams();
-  FREE_WARGV_AND_RETURN(-1);
+  return -1;
 }
 
 #else   // !WEBP_HAVE_GL

examples/webpinfo.c

@@ -20,7 +20,6 @@
 #endif
 
 #include "../imageio/imageio_util.h"
-#include "./unicode.h"
 #include "webp/decode.h"
 #include "webp/format_constants.h"
 #include "webp/mux_types.h"
@@ -234,20 +233,20 @@ static int GetSignedBits(const uint8_t* const data, size_t data_size, size_t nb,
   return 1;
 }
 
-#define GET_BITS(v, n)                                 \
-  do {                                                 \
-    if (!GetBits(data, data_size, n, &(v), bit_pos)) { \
-      LOG_ERROR("Truncated lossy bitstream.");         \
-      return WEBP_INFO_TRUNCATED_DATA;                 \
-    }                                                  \
+#define GET_BITS(v, n)                               \
+  do {                                               \
+    if (!GetBits(data, data_size, n, &v, bit_pos)) { \
+      LOG_ERROR("Truncated lossy bitstream.");       \
+      return WEBP_INFO_TRUNCATED_DATA;               \
+    }                                                \
   } while (0)
 
-#define GET_SIGNED_BITS(v, n)                                \
-  do {                                                       \
-    if (!GetSignedBits(data, data_size, n, &(v), bit_pos)) { \
-      LOG_ERROR("Truncated lossy bitstream.");               \
-      return WEBP_INFO_TRUNCATED_DATA;                       \
-    }                                                        \
+#define GET_SIGNED_BITS(v, n)                              \
+  do {                                                     \
+    if (!GetSignedBits(data, data_size, n, &v, bit_pos)) { \
+      LOG_ERROR("Truncated lossy bitstream.");             \
+      return WEBP_INFO_TRUNCATED_DATA;                     \
+    }                                                      \
   } while (0)
 
 static WebPInfoStatus ParseLossySegmentHeader(const WebPInfo* const webp_info,
@@ -341,7 +340,7 @@ static WebPInfoStatus ParseLossyHeader(const ChunkData* const chunk_data,
   WebPInfoStatus status = WEBP_INFO_OK;
   uint64_t bit_position = 0;
   uint64_t* const bit_pos = &bit_position;
-  int colorspace, clamp_type;
+  int color_space, clamp_type;
   printf("  Parsing lossy bitstream...\n");
   // Calling WebPGetFeatures() in ProcessImageChunk() should ensure this.
   assert(chunk_data->size_ >= CHUNK_HEADER_SIZE + 10);
@@ -382,9 +381,9 @@ static WebPInfoStatus ParseLossyHeader(const ChunkData* const chunk_data,
     LOG_ERROR("Bad partition length.");
     return WEBP_INFO_BITSTREAM_ERROR;
   }
-  GET_BITS(colorspace, 1);
+  GET_BITS(color_space, 1);
   GET_BITS(clamp_type, 1);
-  printf("  Color space:      %d\n", colorspace);
+  printf("  Color space:      %d\n", color_space);
   printf("  Clamp type:       %d\n", clamp_type);
   status = ParseLossySegmentHeader(webp_info, data, data_size, bit_pos);
   if (status != WEBP_INFO_OK) return status;
@@ -463,12 +462,12 @@ static int LLGetBits(const uint8_t* const data, size_t data_size, size_t nb,
   return 1;
 }
 
-#define LL_GET_BITS(v, n)                                \
-  do {                                                   \
-    if (!LLGetBits(data, data_size, n, &(v), bit_pos)) { \
-      LOG_ERROR("Truncated lossless bitstream.");        \
-      return WEBP_INFO_TRUNCATED_DATA;                   \
-    }                                                    \
+#define LL_GET_BITS(v, n)                              \
+  do {                                                 \
+    if (!LLGetBits(data, data_size, n, &v, bit_pos)) { \
+      LOG_ERROR("Truncated lossless bitstream.");      \
+      return WEBP_INFO_TRUNCATED_DATA;                 \
+    }                                                  \
   } while (0)
 
 static WebPInfoStatus ParseLosslessTransform(WebPInfo* const webp_info,
@@ -818,8 +817,9 @@ static WebPInfoStatus ProcessImageChunk(const ChunkData* const chunk_data,
     if (webp_info->seen_image_subchunk_) {
       LOG_ERROR("Consecutive VP8/VP8L sub-chunks in an ANMF chunk.");
       return WEBP_INFO_PARSE_ERROR;
+    } else {
+      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]) {
@@ -873,9 +873,9 @@ static WebPInfoStatus ProcessALPHChunk(const ChunkData* const chunk_data,
     if (webp_info->seen_alpha_subchunk_) {
       LOG_ERROR("Consecutive ALPH sub-chunks in an ANMF chunk.");
       return WEBP_INFO_PARSE_ERROR;
+    } else {
+      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.");
@@ -1107,7 +1107,6 @@ static void HelpLong(void) {
          "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"
@@ -1120,21 +1119,19 @@ int main(int argc, const char* argv[]) {
   WebPInfoStatus webp_info_status = WEBP_INFO_OK;
   WebPInfo webp_info;
 
-  INIT_WARGV(argc, argv);
-
   if (argc == 1) {
     HelpShort();
-    FREE_WARGV_AND_RETURN(WEBP_INFO_OK);
+    return WEBP_INFO_OK;
   }
 
   // Parse command-line input.
   for (c = 1; c < argc; ++c) {
     if (!strcmp(argv[c], "-h") || !strcmp(argv[c], "-help")) {
       HelpShort();
-      FREE_WARGV_AND_RETURN(WEBP_INFO_OK);
+      return WEBP_INFO_OK;
     } else if (!strcmp(argv[c], "-H") || !strcmp(argv[c], "-longhelp")) {
       HelpLong();
-      FREE_WARGV_AND_RETURN(WEBP_INFO_OK);
+      return WEBP_INFO_OK;
     } else if (!strcmp(argv[c], "-quiet")) {
       quiet = 1;
     } else if (!strcmp(argv[c], "-diag")) {
@@ -1143,11 +1140,6 @@ int main(int argc, const char* argv[]) {
       show_summary = 1;
     } else if (!strcmp(argv[c], "-bitstream_info")) {
       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);
-      FREE_WARGV_AND_RETURN(0);
     } else {  // Assume the remaining are all input files.
       break;
     }
@@ -1155,28 +1147,27 @@ int main(int argc, const char* argv[]) {
 
   if (c == argc) {
     HelpShort();
-    FREE_WARGV_AND_RETURN(WEBP_INFO_INVALID_COMMAND);
+    return WEBP_INFO_INVALID_COMMAND;
   }
 
   // Process input files one by one.
   for (; c < argc; ++c) {
     WebPData webp_data;
-    const W_CHAR* in_file = NULL;
+    const 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;
-    in_file = GET_WARGV(argv, c);
-    if (in_file == NULL ||
-        !ReadFileToWebPData((const char*)in_file, &webp_data)) {
+    in_file = argv[c];
+    if (in_file == NULL || !ReadFileToWebPData(in_file, &webp_data)) {
       webp_info_status = WEBP_INFO_INVALID_COMMAND;
-      WFPRINTF(stderr, "Failed to open input file %s.\n", in_file);
+      fprintf(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_) printf("File: %s\n", in_file);
     webp_info_status = AnalyzeWebP(&webp_info, &webp_data);
     WebPDataClear(&webp_data);
   }
-  FREE_WARGV_AND_RETURN(webp_info_status);
+  return webp_info_status;
 }

examples/webpmux.c

@@ -47,7 +47,6 @@
     webpmux -info in.webp
     webpmux [ -h | -help ]
     webpmux -version
-    webpmux argument_file_name
 */
 
 #ifdef HAVE_CONFIG_H
@@ -62,7 +61,6 @@
 #include "webp/mux.h"
 #include "../examples/example_util.h"
 #include "../imageio/imageio_util.h"
-#include "./unicode.h"
 
 //------------------------------------------------------------------------------
 // Config object to parse command-line arguments.
@@ -110,26 +108,28 @@ static const char* const kDescriptions[LAST_FEATURE] = {
 };
 
 typedef struct {
-  CommandLineArguments cmd_args_;
-
-  ActionType action_type_;
-  const char* input_;
-  const char* output_;
   FeatureType type_;
   FeatureArg* args_;
   int arg_count_;
-} Config;
+} Feature;
+
+typedef struct {
+  ActionType action_type_;
+  const char* input_;
+  const char* output_;
+  Feature feature_;
+} WebPMuxConfig;
 
 //------------------------------------------------------------------------------
 // Helper functions.
 
-static int CountOccurrences(const CommandLineArguments* const args,
-                            const char* const arg) {
+static int CountOccurrences(const char* arglist[], int list_length,
+                            const char* arg) {
   int i;
   int num_occurences = 0;
 
-  for (i = 0; i < args->argc_; ++i) {
-    if (!strcmp(args->argv_[i], arg)) {
+  for (i = 0; i < list_length; ++i) {
+    if (!strcmp(arglist[i], arg)) {
       ++num_occurences;
     }
   }
@@ -301,7 +301,6 @@ static void PrintHelp(void) {
   printf("       webpmux -info INPUT\n");
   printf("       webpmux [-h|-help]\n");
   printf("       webpmux -version\n");
-  printf("       webpmux argument_file_name\n");
 
   printf("\n");
   printf("GET_OPTIONS:\n");
@@ -370,10 +369,6 @@ static void PrintHelp(void) {
 
   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");
 }
 
 static void WarnAboutOddOffset(const WebPMuxFrameInfo* const info) {
@@ -384,32 +379,40 @@ static void WarnAboutOddOffset(const WebPMuxFrameInfo* const info) {
   }
 }
 
+static int ReadFileToWebPData(const char* const filename,
+                              WebPData* const webp_data) {
+  const uint8_t* data;
+  size_t size;
+  if (!ImgIoUtilReadFile(filename, &data, &size)) return 0;
+  webp_data->bytes = data;
+  webp_data->size = size;
+  return 1;
+}
+
 static int CreateMux(const char* const filename, WebPMux** mux) {
   WebPData bitstream;
   assert(mux != NULL);
-  if (!ExUtilReadFileToWebPData(filename, &bitstream)) return 0;
+  if (!ReadFileToWebPData(filename, &bitstream)) return 0;
   *mux = WebPMuxCreate(&bitstream, 1);
-  WebPDataClear(&bitstream);
+  free((void*)bitstream.bytes);
   if (*mux != NULL) return 1;
-  WFPRINTF(stderr, "Failed to create mux object from file %s.\n",
-           (const W_CHAR*)filename);
+  fprintf(stderr, "Failed to create mux object from file %s.\n", filename);
   return 0;
 }
 
 static int WriteData(const char* filename, const WebPData* const webpdata) {
   int ok = 0;
-  FILE* fout = WSTRCMP(filename, "-") ? WFOPEN(filename, "wb")
-                                      : ImgIoUtilSetBinaryMode(stdout);
+  FILE* fout = strcmp(filename, "-") ? fopen(filename, "wb")
+                                     : ImgIoUtilSetBinaryMode(stdout);
   if (fout == NULL) {
-    WFPRINTF(stderr, "Error opening output WebP file %s!\n",
-             (const W_CHAR*)filename);
+    fprintf(stderr, "Error opening output WebP file %s!\n", filename);
     return 0;
   }
   if (fwrite(webpdata->bytes, webpdata->size, 1, fout) != 1) {
-    WFPRINTF(stderr, "Error writing file %s!\n", (const W_CHAR*)filename);
+    fprintf(stderr, "Error writing file %s!\n", filename);
   } else {
-    WFPRINTF(stderr, "Saved file %s (%d bytes)\n",
-             (const W_CHAR*)filename, (int)webpdata->size);
+    fprintf(stderr, "Saved file %s (%d bytes)\n",
+            filename, (int)webpdata->size);
     ok = 1;
   }
   if (fout != stdout) fclose(fout);
@@ -514,10 +517,9 @@ static int ParseBgcolorArgs(const char* args, uint32_t* const bgcolor) {
 //------------------------------------------------------------------------------
 // Clean-up.
 
-static void DeleteConfig(Config* const config) {
+static void DeleteConfig(WebPMuxConfig* config) {
   if (config != NULL) {
-    free(config->args_);
-    ExUtilDeleteCommandLineArguments(&config->cmd_args_);
+    free(config->feature_.args_);
     memset(config, 0, sizeof(*config));
   }
 }
@@ -529,7 +531,7 @@ static void DeleteConfig(Config* const config) {
 // Returns 1 on valid, 0 otherwise.
 // Also fills up num_feature_args to be number of feature arguments given.
 // (e.g. if there are 4 '-frame's and 1 '-loop', then num_feature_args = 5).
-static int ValidateCommandLine(const CommandLineArguments* const cmd_args,
+static int ValidateCommandLine(int argc, const char* argv[],
                                int* num_feature_args) {
   int num_frame_args;
   int num_loop_args;
@@ -541,27 +543,27 @@ static int ValidateCommandLine(const CommandLineArguments* const cmd_args,
   *num_feature_args = 0;
 
   // Simple checks.
-  if (CountOccurrences(cmd_args, "-get") > 1) {
+  if (CountOccurrences(argv, argc, "-get") > 1) {
     ERROR_GOTO1("ERROR: Multiple '-get' arguments specified.\n", ErrValidate);
   }
-  if (CountOccurrences(cmd_args, "-set") > 1) {
+  if (CountOccurrences(argv, argc, "-set") > 1) {
     ERROR_GOTO1("ERROR: Multiple '-set' arguments specified.\n", ErrValidate);
   }
-  if (CountOccurrences(cmd_args, "-strip") > 1) {
+  if (CountOccurrences(argv, argc, "-strip") > 1) {
     ERROR_GOTO1("ERROR: Multiple '-strip' arguments specified.\n", ErrValidate);
   }
-  if (CountOccurrences(cmd_args, "-info") > 1) {
+  if (CountOccurrences(argv, argc, "-info") > 1) {
     ERROR_GOTO1("ERROR: Multiple '-info' arguments specified.\n", ErrValidate);
   }
-  if (CountOccurrences(cmd_args, "-o") > 1) {
+  if (CountOccurrences(argv, argc, "-o") > 1) {
     ERROR_GOTO1("ERROR: Multiple output files specified.\n", ErrValidate);
   }
 
   // Compound checks.
-  num_frame_args = CountOccurrences(cmd_args, "-frame");
-  num_loop_args = CountOccurrences(cmd_args, "-loop");
-  num_bgcolor_args = CountOccurrences(cmd_args, "-bgcolor");
-  num_durations_args = CountOccurrences(cmd_args, "-duration");
+  num_frame_args = CountOccurrences(argv, argc, "-frame");
+  num_loop_args = CountOccurrences(argv, argc, "-loop");
+  num_bgcolor_args = CountOccurrences(argv, argc, "-bgcolor");
+  num_durations_args = CountOccurrences(argv, argc, "-duration");
 
   if (num_loop_args > 1) {
     ERROR_GOTO1("ERROR: Multiple loop counts specified.\n", ErrValidate);
@@ -596,38 +598,31 @@ static int ValidateCommandLine(const CommandLineArguments* const cmd_args,
 
 #define ACTION_IS_NIL (config->action_type_ == NIL_ACTION)
 
-#define FEATURETYPE_IS_NIL (config->type_ == NIL_FEATURE)
+#define FEATURETYPE_IS_NIL (feature->type_ == NIL_FEATURE)
 
-#define CHECK_NUM_ARGS_AT_LEAST(NUM, LABEL)                              \
+#define CHECK_NUM_ARGS_LESS(NUM, LABEL)                                  \
   if (argc < i + (NUM)) {                                                \
     fprintf(stderr, "ERROR: Too few arguments for '%s'.\n", argv[i]);    \
     goto LABEL;                                                          \
   }
 
-#define CHECK_NUM_ARGS_AT_MOST(NUM, LABEL)                               \
-  if (argc > i + (NUM)) {                                                \
+#define CHECK_NUM_ARGS_NOT_EQUAL(NUM, LABEL)                             \
+  if (argc != i + (NUM)) {                                               \
     fprintf(stderr, "ERROR: Too many arguments for '%s'.\n", argv[i]);   \
     goto LABEL;                                                          \
   }
 
-#define CHECK_NUM_ARGS_EXACTLY(NUM, LABEL)                               \
-  CHECK_NUM_ARGS_AT_LEAST(NUM, LABEL);                                   \
-  CHECK_NUM_ARGS_AT_MOST(NUM, LABEL);
-
 // Parses command-line arguments to fill up config object. Also performs some
-// semantic checks. unicode_argv contains wchar_t arguments or is null.
-static int ParseCommandLine(Config* config, const W_CHAR** const unicode_argv) {
+// semantic checks.
+static int ParseCommandLine(int argc, const char* argv[],
+                            WebPMuxConfig* config) {
   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_;
-  // 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];
+    Feature* const feature = &config->feature_;
+    FeatureArg* const arg = &feature->args_[feature_arg_index];
     if (argv[i][0] == '-') {  // One of the action types or output.
       if (!strcmp(argv[i], "-set")) {
         if (ACTION_IS_NIL) {
@@ -637,14 +632,14 @@ static int ParseCommandLine(Config* config, const W_CHAR** const unicode_argv) {
         }
         ++i;
       } else if (!strcmp(argv[i], "-duration")) {
-        CHECK_NUM_ARGS_AT_LEAST(2, ErrParse);
+        CHECK_NUM_ARGS_LESS(2, ErrParse);
         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 || feature->type_ == FEATURE_DURATION) {
+          feature->type_ = FEATURE_DURATION;
         } else {
           ERROR_GOTO1("ERROR: Multiple features specified.\n", ErrParse);
         }
@@ -661,20 +656,20 @@ static int ParseCommandLine(Config* config, const W_CHAR** const unicode_argv) {
       } else if (!strcmp(argv[i], "-strip")) {
         if (ACTION_IS_NIL) {
           config->action_type_ = ACTION_STRIP;
-          config->arg_count_ = 0;
+          feature->arg_count_ = 0;
         } else {
           ERROR_GOTO1("ERROR: Multiple actions specified.\n", ErrParse);
         }
         ++i;
       } else if (!strcmp(argv[i], "-frame")) {
-        CHECK_NUM_ARGS_AT_LEAST(3, ErrParse);
+        CHECK_NUM_ARGS_LESS(3, ErrParse);
         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 || feature->type_ == FEATURE_ANMF) {
+          feature->type_ = FEATURE_ANMF;
         } else {
           ERROR_GOTO1("ERROR: Multiple features specified.\n", ErrParse);
         }
@@ -684,14 +679,14 @@ static int ParseCommandLine(Config* config, const W_CHAR** const unicode_argv) {
         ++feature_arg_index;
         i += 3;
       } else if (!strcmp(argv[i], "-loop") || !strcmp(argv[i], "-bgcolor")) {
-        CHECK_NUM_ARGS_AT_LEAST(2, ErrParse);
+        CHECK_NUM_ARGS_LESS(2, ErrParse);
         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 || feature->type_ == FEATURE_ANMF) {
+          feature->type_ = FEATURE_ANMF;
         } else {
           ERROR_GOTO1("ERROR: Multiple features specified.\n", ErrParse);
         }
@@ -701,36 +696,34 @@ static int ParseCommandLine(Config* config, const W_CHAR** const unicode_argv) {
         ++feature_arg_index;
         i += 2;
       } else if (!strcmp(argv[i], "-o")) {
-        CHECK_NUM_ARGS_AT_LEAST(2, ErrParse);
-        config->output_ = wargv[i + 1];
+        CHECK_NUM_ARGS_LESS(2, ErrParse);
+        config->output_ = argv[i + 1];
         i += 2;
       } else if (!strcmp(argv[i], "-info")) {
-        CHECK_NUM_ARGS_EXACTLY(2, ErrParse);
+        CHECK_NUM_ARGS_NOT_EQUAL(2, ErrParse);
         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];
+          feature->arg_count_ = 0;
+          config->input_ = argv[i + 1];
         }
         i += 2;
       } else if (!strcmp(argv[i], "-h") || !strcmp(argv[i], "-help")) {
         PrintHelp();
         DeleteConfig(config);
-        LOCAL_FREE((W_CHAR** const)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);
         DeleteConfig(config);
-        LOCAL_FREE((W_CHAR** const)unicode_argv);
         exit(0);
       } else if (!strcmp(argv[i], "--")) {
         if (i < argc - 1) {
           ++i;
           if (config->input_ == NULL) {
-            config->input_ = wargv[i];
+            config->input_ = argv[i];
           } else {
             ERROR_GOTO2("ERROR at '%s': Multiple input files specified.\n",
                         argv[i], ErrParse);
@@ -748,14 +741,14 @@ static int ParseCommandLine(Config* config, const W_CHAR** const unicode_argv) {
       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 :
+          feature->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];
+          CHECK_NUM_ARGS_LESS(2, ErrParse);
+          arg->filename_ = argv[i + 1];
           ++feature_arg_index;
           i += 2;
         } else {
@@ -763,14 +756,14 @@ static int ParseCommandLine(Config* config, const W_CHAR** const unicode_argv) {
         }
       } else if (!strcmp(argv[i], "frame") &&
                  (config->action_type_ == ACTION_GET)) {
-        CHECK_NUM_ARGS_AT_LEAST(2, ErrParse);
-        config->type_ = FEATURE_ANMF;
+        CHECK_NUM_ARGS_LESS(2, ErrParse);
+        feature->type_ = FEATURE_ANMF;
         arg->params_ = argv[i + 1];
         ++feature_arg_index;
         i += 2;
       } else {  // Assume input file.
         if (config->input_ == NULL) {
-          config->input_ = wargv[i];
+          config->input_ = argv[i];
         } else {
           ERROR_GOTO2("ERROR at '%s': Multiple input files specified.\n",
                       argv[i], ErrParse);
@@ -784,8 +777,9 @@ static int ParseCommandLine(Config* config, const W_CHAR** const unicode_argv) {
 }
 
 // Additional checks after config is filled.
-static int ValidateConfig(Config* const config) {
+static int ValidateConfig(WebPMuxConfig* config) {
   int ok = 1;
+  Feature* const feature = &config->feature_;
 
   // Action.
   if (ACTION_IS_NIL) {
@@ -801,7 +795,7 @@ static int ValidateConfig(Config* const config) {
   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 (feature->type_ != FEATURE_ANMF) {
       ERROR_GOTO1("ERROR: No input file specified.\n", ErrValidate2);
     }
   }
@@ -816,29 +810,28 @@ static int ValidateConfig(Config* const config) {
 }
 
 // Create config object from command-line arguments.
-static int InitializeConfig(int argc, const char* argv[], Config* const config,
-                            const W_CHAR** const unicode_argv) {
+static int InitializeConfig(int argc, const char* argv[],
+                            WebPMuxConfig* config) {
   int num_feature_args = 0;
-  int ok;
+  int ok = 1;
 
+  assert(config != NULL);
   memset(config, 0, sizeof(*config));
 
-  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(argc, argv, &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->feature_.arg_count_ = num_feature_args;
+  config->feature_.args_ =
+      (FeatureArg*)calloc(num_feature_args, sizeof(*config->feature_.args_));
+  if (config->feature_.args_ == NULL) {
     ERROR_GOTO1("ERROR: Memory allocation error.\n", Err1);
   }
 
   // Parse command-line.
-  if (!ParseCommandLine(config, unicode_argv) || !ValidateConfig(config)) {
+  if (!ParseCommandLine(argc, argv, config) || !ValidateConfig(config)) {
     ERROR_GOTO1("Exiting due to command-line parsing error.\n", Err1);
   }
 
@@ -848,14 +841,13 @@ static int InitializeConfig(int argc, const char* argv[], Config* const config,
 
 #undef ACTION_IS_NIL
 #undef FEATURETYPE_IS_NIL
-#undef CHECK_NUM_ARGS_AT_LEAST
-#undef CHECK_NUM_ARGS_AT_MOST
-#undef CHECK_NUM_ARGS_EXACTLY
+#undef CHECK_NUM_ARGS_LESS
+#undef CHECK_NUM_ARGS_MORE
 
 //------------------------------------------------------------------------------
 // Processing.
 
-static int GetFrame(const WebPMux* mux, const Config* config) {
+static int GetFrame(const WebPMux* mux, const WebPMuxConfig* config) {
   WebPMuxError err = WEBP_MUX_OK;
   WebPMux* mux_single = NULL;
   int num = 0;
@@ -865,7 +857,7 @@ 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->feature_.args_[0].params_, 10, &parse_error);
   if (num < 0) {
     ERROR_GOTO1("ERROR: Frame/Fragment index must be non-negative.\n", ErrGet);
   }
@@ -899,17 +891,18 @@ static int GetFrame(const WebPMux* mux, const Config* config) {
 }
 
 // Read and process config.
-static int Process(const Config* config) {
+static int Process(const WebPMuxConfig* config) {
   WebPMux* mux = NULL;
   WebPData chunk;
   WebPMuxError err = WEBP_MUX_OK;
   int ok = 1;
+  const Feature* const feature = &config->feature_;
 
   switch (config->action_type_) {
     case ACTION_GET: {
       ok = CreateMux(config->input_, &mux);
       if (!ok) goto Err2;
-      switch (config->type_) {
+      switch (feature->type_) {
         case FEATURE_ANMF:
           ok = GetFrame(mux, config);
           break;
@@ -917,10 +910,10 @@ 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[feature->type_], &chunk);
           if (err != WEBP_MUX_OK) {
             ERROR_GOTO3("ERROR (%s): Could not get the %s.\n",
-                        ErrorString(err), kDescriptions[config->type_], Err2);
+                        ErrorString(err), kDescriptions[feature->type_], Err2);
           }
           ok = WriteData(config->output_, &chunk);
           break;
@@ -932,7 +925,7 @@ static int Process(const Config* config) {
       break;
     }
     case ACTION_SET: {
-      switch (config->type_) {
+      switch (feature->type_) {
         case FEATURE_ANMF: {
           int i;
           WebPMuxAnimParams params = { 0xFFFFFFFF, 0 };
@@ -941,11 +934,11 @@ static int Process(const Config* config) {
             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 < feature->arg_count_; ++i) {
+            switch (feature->args_[i].subtype_) {
               case SUBTYPE_BGCOLOR: {
                 uint32_t bgcolor;
-                ok = ParseBgcolorArgs(config->args_[i].params_, &bgcolor);
+                ok = ParseBgcolorArgs(feature->args_[i].params_, &bgcolor);
                 if (!ok) {
                   ERROR_GOTO1("ERROR: Could not parse the background color \n",
                               Err2);
@@ -956,7 +949,7 @@ 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(feature->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
@@ -972,10 +965,10 @@ static int Process(const Config* config) {
               case SUBTYPE_ANMF: {
                 WebPMuxFrameInfo frame;
                 frame.id = WEBP_CHUNK_ANMF;
-                ok = ExUtilReadFileToWebPData(config->args_[i].filename_,
-                                              &frame.bitstream);
+                ok = ReadFileToWebPData(feature->args_[i].filename_,
+                                        &frame.bitstream);
                 if (!ok) goto Err2;
-                ok = ParseFrameArgs(config->args_[i].params_, &frame);
+                ok = ParseFrameArgs(feature->args_[i].params_, &frame);
                 if (!ok) {
                   WebPDataClear(&frame.bitstream);
                   ERROR_GOTO1("ERROR: Could not parse frame properties.\n",
@@ -1008,13 +1001,13 @@ static int Process(const Config* config) {
         case FEATURE_XMP: {
           ok = CreateMux(config->input_, &mux);
           if (!ok) goto Err2;
-          ok = ExUtilReadFileToWebPData(config->args_[0].filename_, &chunk);
+          ok = ReadFileToWebPData(feature->args_[0].filename_, &chunk);
           if (!ok) goto Err2;
-          err = WebPMuxSetChunk(mux, kFourccList[config->type_], &chunk, 1);
+          err = WebPMuxSetChunk(mux, kFourccList[feature->type_], &chunk, 1);
           free((void*)chunk.bytes);
           if (err != WEBP_MUX_OK) {
             ERROR_GOTO3("ERROR (%s): Could not set the %s.\n",
-                        ErrorString(err), kDescriptions[config->type_], Err2);
+                        ErrorString(err), kDescriptions[feature->type_], Err2);
           }
           break;
         }
@@ -1050,11 +1043,11 @@ 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 < feature->arg_count_; ++i) {
           int k;
           int args[3];
           int duration, start, end;
-          const int nb_args = ExUtilGetInts(config->args_[i].params_,
+          const int nb_args = ExUtilGetInts(feature->args_[i].params_,
                                             10, 3, args);
           ok = (nb_args >= 1);
           if (!ok) goto Err3;
@@ -1112,12 +1105,12 @@ static int Process(const Config* config) {
     case ACTION_STRIP: {
       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 (feature->type_ == FEATURE_ICCP || feature->type_ == FEATURE_EXIF ||
+          feature->type_ == FEATURE_XMP) {
+        err = WebPMuxDeleteChunk(mux, kFourccList[feature->type_]);
         if (err != WEBP_MUX_OK) {
           ERROR_GOTO3("ERROR (%s): Could not strip the %s.\n",
-                      ErrorString(err), kDescriptions[config->type_], Err2);
+                      ErrorString(err), kDescriptions[feature->type_], Err2);
         }
       } else {
         ERROR_GOTO1("ERROR: Invalid feature for action 'strip'.\n", Err2);
@@ -1147,19 +1140,15 @@ static int Process(const Config* config) {
 // Main.
 
 int main(int argc, const char* argv[]) {
-  Config config;
-  int ok;
-
-  INIT_WARGV(argc, argv);
-
-  ok = InitializeConfig(argc - 1, argv + 1, &config, GET_WARGV_OR_NULL());
+  WebPMuxConfig config;
+  int ok = InitializeConfig(argc - 1, argv + 1, &config);
   if (ok) {
     ok = Process(&config);
   } else {
     PrintHelp();
   }
   DeleteConfig(&config);
-  FREE_WARGV_AND_RETURN(!ok);
+  return !ok;
 }
 
 //------------------------------------------------------------------------------

extras/Makefile.am

@@ -1,4 +1,3 @@
-AM_CPPFLAGS += -I$(top_builddir) -I$(top_srcdir)
 AM_CPPFLAGS += -I$(top_builddir)/src -I$(top_srcdir)/src
 noinst_LTLIBRARIES = libwebpextras.la
 
@@ -13,32 +12,25 @@ libwebpextras_la_LDFLAGS = -lm
 libwebpextras_la_LIBADD = ../src/libwebp.la
 
 noinst_PROGRAMS =
-noinst_PROGRAMS += webp_quality
-if BUILD_DEMUX
-  noinst_PROGRAMS += get_disto
-endif
+noinst_PROGRAMS += get_disto webp_quality
 if BUILD_VWEBP_SDL
   noinst_PROGRAMS += vwebp_sdl
 endif
 
 get_disto_SOURCES  = get_disto.c
 get_disto_CPPFLAGS = $(AM_CPPFLAGS)
-get_disto_LDADD =
-get_disto_LDADD += ../imageio/libimageio_util.la
-get_disto_LDADD += ../imageio/libimagedec.la
+get_disto_LDADD = ../imageio/libimageio_util.la ../imageio/libimagedec.la
 get_disto_LDADD += ../src/libwebp.la
 get_disto_LDADD += $(PNG_LIBS) $(JPEG_LIBS) $(TIFF_LIBS)
 
 webp_quality_SOURCES  = webp_quality.c
-webp_quality_CPPFLAGS = $(AM_CPPFLAGS)
-webp_quality_LDADD =
-webp_quality_LDADD += ../imageio/libimageio_util.la
+webp_quality_CPPFLAGS = $(AM_CPPFLAGS) $(USE_EXPERIMENTAL_CODE)
+webp_quality_LDADD  = ../imageio/libimageio_util.la
 webp_quality_LDADD += libwebpextras.la
 webp_quality_LDADD += ../src/libwebp.la
 
 vwebp_sdl_SOURCES  = vwebp_sdl.c webp_to_sdl.c webp_to_sdl.h
 vwebp_sdl_CPPFLAGS = $(AM_CPPFLAGS) $(SDL_INCLUDES)
-vwebp_sdl_LDADD =
-vwebp_sdl_LDADD += ../imageio/libimageio_util.la
+vwebp_sdl_LDADD = ../imageio/libimageio_util.la
 vwebp_sdl_LDADD += ../src/libwebp.la
 vwebp_sdl_LDADD += $(SDL_LIBS)

extras/extras.c

@@ -10,15 +10,15 @@
 //  Additional WebP utilities.
 //
 
-#include "extras/extras.h"
+#include "./extras.h"
 #include "webp/format_constants.h"
 
 #include <assert.h>
 #include <string.h>
 
-#define XTRA_MAJ_VERSION 1
-#define XTRA_MIN_VERSION 0
-#define XTRA_REV_VERSION 3
+#define XTRA_MAJ_VERSION 0
+#define XTRA_MIN_VERSION 1
+#define XTRA_REV_VERSION 0
 
 //------------------------------------------------------------------------------
 
@@ -48,14 +48,13 @@ int WebPImportGray(const uint8_t* gray_data, WebPPicture* pic) {
 
 int WebPImportRGB565(const uint8_t* rgb565, WebPPicture* pic) {
   int x, y;
-  uint32_t* dst;
   if (pic == NULL || rgb565 == NULL) return 0;
   pic->colorspace = WEBP_YUV420;
   pic->use_argb = 1;
   if (!WebPPictureAlloc(pic)) return 0;
-  dst = pic->argb;
   for (y = 0; y < pic->height; ++y) {
     const int width = pic->width;
+    uint32_t* dst = pic->argb + y * pic->argb_stride;
     for (x = 0; x < width; ++x) {
 #ifdef WEBP_SWAP_16BIT_CSP
       const uint32_t rg = rgb565[2 * x + 1];
@@ -71,24 +70,22 @@ int WebPImportRGB565(const uint8_t* rgb565, WebPPicture* pic) {
       r = r | (r >> 5);
       g = g | (g >> 6);
       b = b | (b >> 5);
-      dst[x] = (0xffu << 24) | (r << 16) | (g << 8) | b;
+      dst[x] = (r << 16) | (g << 8) | b;
     }
     rgb565 += 2 * width;
-    dst += pic->argb_stride;
   }
   return 1;
 }
 
 int WebPImportRGB4444(const uint8_t* rgb4444, WebPPicture* pic) {
   int x, y;
-  uint32_t* dst;
   if (pic == NULL || rgb4444 == NULL) return 0;
   pic->colorspace = WEBP_YUV420;
   pic->use_argb = 1;
   if (!WebPPictureAlloc(pic)) return 0;
-  dst = pic->argb;
   for (y = 0; y < pic->height; ++y) {
     const int width = pic->width;
+    uint32_t* dst = pic->argb + y * pic->argb_stride;
     for (x = 0; x < width; ++x) {
 #ifdef WEBP_SWAP_16BIT_CSP
       const uint32_t rg = rgb4444[2 * x + 1];
@@ -109,7 +106,6 @@ int WebPImportRGB4444(const uint8_t* rgb4444, WebPPicture* pic) {
       dst[x] = (a << 24) | (r << 16) | (g << 8) | b;
     }
     rgb4444 += 2 * width;
-    dst += pic->argb_stride;
   }
   return 1;
 }

extras/extras.h

@@ -25,28 +25,28 @@ extern "C" {
 
 // Returns the version number of the extras library, packed in hexadecimal using
 // 8bits for each of major/minor/revision. E.g: v2.5.7 is 0x020507.
-WEBP_EXTERN int WebPGetExtrasVersion(void);
+WEBP_EXTERN(int) WebPGetExtrasVersion(void);
 
 //------------------------------------------------------------------------------
 // Ad-hoc colorspace importers.
 
 // Import luma sample (gray scale image) into 'picture'. The 'picture'
 // width and height must be set prior to calling this function.
-WEBP_EXTERN int WebPImportGray(const uint8_t* gray, WebPPicture* picture);
+WEBP_EXTERN(int) WebPImportGray(const uint8_t* gray, WebPPicture* picture);
 
 // Import rgb sample in RGB565 packed format into 'picture'. The 'picture'
 // width and height must be set prior to calling this function.
-WEBP_EXTERN int WebPImportRGB565(const uint8_t* rgb565, WebPPicture* pic);
+WEBP_EXTERN(int) WebPImportRGB565(const uint8_t* rgb565, WebPPicture* pic);
 
 // Import rgb sample in RGB4444 packed format into 'picture'. The 'picture'
 // width and height must be set prior to calling this function.
-WEBP_EXTERN int WebPImportRGB4444(const uint8_t* rgb4444, WebPPicture* pic);
+WEBP_EXTERN(int) WebPImportRGB4444(const uint8_t* rgb4444, WebPPicture* pic);
 
 // Import a color mapped image. The number of colors is less or equal to
 // 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
+WEBP_EXTERN(int)
 WebPImportColorMappedARGB(const uint8_t* indexed, int indexed_stride,
                           const uint32_t palette[], int palette_size,
                           WebPPicture* pic);
@@ -59,7 +59,7 @@ WebPImportColorMappedARGB(const uint8_t* indexed, int indexed_stride,
 // Otherwise (lossy bitstream), the returned value is in the range [0..100].
 // Any error (invalid bitstream, animated WebP, incomplete header, etc.)
 // will return a value of -1.
-WEBP_EXTERN int VP8EstimateQuality(const uint8_t* const data, size_t size);
+WEBP_EXTERN(int) VP8EstimateQuality(const uint8_t* const data, size_t size);
 
 //------------------------------------------------------------------------------
 
@@ -67,4 +67,4 @@ WEBP_EXTERN int VP8EstimateQuality(const uint8_t* const data, size_t size);
 }    // extern "C"
 #endif
 
-#endif  // WEBP_EXTRAS_EXTRAS_H_
+#endif  /* WEBP_EXTRAS_EXTRAS_H_ */

extras/get_disto.c

@@ -24,9 +24,8 @@
 #include <string.h>
 
 #include "webp/encode.h"
-#include "imageio/image_dec.h"
-#include "imageio/imageio_util.h"
-#include "../examples/unicode.h"
+#include "../imageio/image_dec.h"
+#include "../imageio/imageio_util.h"
 
 static size_t ReadPicture(const char* const filename, WebPPicture* const pic,
                           int keep_alpha) {
@@ -49,8 +48,7 @@ static size_t ReadPicture(const char* const filename, WebPPicture* const pic,
 
  End:
   if (!ok) {
-    WFPRINTF(stderr, "Error! Could not process file %s\n",
-             (const W_CHAR*)filename);
+    fprintf(stderr, "Error! Could not process file %s\n", filename);
   }
   free((void*)data);
   return ok ? data_size : 0;
@@ -241,11 +239,9 @@ int main(int argc, const char *argv[]) {
   const char* name2 = NULL;
   const char* output = NULL;
 
-  INIT_WARGV(argc, argv);
-
   if (!WebPPictureInit(&pic1) || !WebPPictureInit(&pic2)) {
     fprintf(stderr, "Can't init pictures\n");
-    FREE_WARGV_AND_RETURN(1);
+    return 1;
   }
 
   for (c = 1; c < argc; ++c) {
@@ -267,11 +263,11 @@ int main(int argc, const char *argv[]) {
         fprintf(stderr, "missing file name after %s option.\n", argv[c - 1]);
         goto End;
       }
-      output = (const char*)GET_WARGV(argv, c);
+      output = argv[c];
     } else if (name1 == NULL) {
-      name1 = (const char*)GET_WARGV(argv, c);
+      name1 = argv[c];
     } else {
-      name2 = (const char*)GET_WARGV(argv, c);
+      name2 = argv[c];
     }
   }
   if (help || name1 == NULL || name2 == NULL) {
@@ -294,10 +290,9 @@ 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",
+  printf("%u %.2f    %.2f %.2f %.2f %.2f\n",
          (unsigned int)size1,
-         disto[4], disto[0], disto[1], disto[2], disto[3],
-         8.f * size1 / pic1.width / pic1.height);
+         disto[4], disto[0], disto[1], disto[2], disto[3]);
 
   if (output != NULL) {
     uint8_t* data = NULL;
@@ -327,7 +322,6 @@ int main(int argc, const char *argv[]) {
       fprintf(stderr, "Can only compute the difference map in ARGB format.\n");
       goto End;
     }
-#if !defined(WEBP_REDUCE_CSP)
     data_size = WebPEncodeLosslessBGRA((const uint8_t*)pic1.argb,
                                        pic1.width, pic1.height,
                                        pic1.argb_stride * 4,
@@ -339,17 +333,11 @@ int main(int argc, const char *argv[]) {
     ret = ImgIoUtilWriteFile(output, data, data_size) ? 0 : 1;
     WebPFree(data);
     if (ret) goto End;
-#else
-    (void)data;
-    (void)data_size;
-    fprintf(stderr, "Cannot save the difference map. Please recompile "
-                    "without the WEBP_REDUCE_CSP flag.\n");
-#endif  // WEBP_REDUCE_CSP
   }
   ret = 0;
 
  End:
   WebPPictureFree(&pic1);
   WebPPictureFree(&pic2);
-  FREE_WARGV_AND_RETURN(ret);
+  return ret;
 }

extras/quality_estimate.c

@@ -11,7 +11,7 @@
 //
 // Author: Skal (pascal.massimino@gmail.com)
 
-#include "extras/extras.h"
+#include "./extras.h"
 #include "webp/decode.h"
 
 #include <math.h>
@@ -73,7 +73,7 @@ int VP8EstimateQuality(const uint8_t* const data, size_t size) {
   pos += 4;
   bit_pos = pos * 8;
 
-  GET_BIT(2);  // colorspace + clamp type
+  GET_BIT(2);  // color_space + clamp type
 
   // Segment header
   if (GET_BIT(1)) {       // use_segment_

extras/vwebp_sdl.c

@@ -24,8 +24,7 @@
 
 #include "webp_to_sdl.h"
 #include "webp/decode.h"
-#include "imageio/imageio_util.h"
-#include "../examples/unicode.h"
+#include "../imageio/imageio_util.h"
 
 #if defined(WEBP_HAVE_JUST_SDL_H)
 #include <SDL.h>
@@ -52,33 +51,29 @@ static void ProcessEvents(void) {
 int main(int argc, char* argv[]) {
   int c;
   int ok = 0;
-
-  INIT_WARGV(argc, argv);
-
   for (c = 1; c < argc; ++c) {
     const char* file = NULL;
     const uint8_t* webp = NULL;
     size_t webp_size = 0;
     if (!strcmp(argv[c], "-h")) {
       printf("Usage: %s [-h] image.webp [more_files.webp...]\n", argv[0]);
-      FREE_WARGV_AND_RETURN(0);
+      return 0;
     } else {
-      file = (const char*)GET_WARGV(argv, c);
+      file = argv[c];
     }
     if (file == NULL) continue;
     if (!ImgIoUtilReadFile(file, &webp, &webp_size)) {
-      WFPRINTF(stderr, "Error opening file: %s\n", (const W_CHAR*)file);
+      fprintf(stderr, "Error opening file: %s\n", file);
       goto Error;
     }
     if (webp_size != (size_t)(int)webp_size) {
-      free((void*)webp);
       fprintf(stderr, "File too large.\n");
       goto Error;
     }
     ok = WebpToSDL((const char*)webp, (int)webp_size);
     free((void*)webp);
     if (!ok) {
-      WFPRINTF(stderr, "Error decoding file %s\n", (const W_CHAR*)file);
+      fprintf(stderr, "Error decoding file %s\n", file);
       goto Error;
     }
     ProcessEvents();
@@ -87,7 +82,7 @@ int main(int argc, char* argv[]) {
 
  Error:
   SDL_Quit();
-  FREE_WARGV_AND_RETURN(ok ? 0 : 1);
+  return ok ? 0 : 1;
 }
 
 #else  // !WEBP_HAVE_SDL

extras/webp_quality.c

@@ -11,32 +11,28 @@
 #include <stdlib.h>
 #include <string.h>
 
-#include "extras/extras.h"
-#include "imageio/imageio_util.h"
-#include "../examples/unicode.h"
+#include "./extras.h"
+#include "../imageio/imageio_util.h"
 
 int main(int argc, const char *argv[]) {
   int c;
   int quiet = 0;
   int ok = 1;
-
-  INIT_WARGV(argc, argv);
-
   for (c = 1; ok && c < argc; ++c) {
     if (!strcmp(argv[c], "-quiet")) {
       quiet = 1;
     } else if (!strcmp(argv[c], "-help") || !strcmp(argv[c], "-h")) {
       printf("webp_quality [-h][-quiet] webp_files...\n");
-      FREE_WARGV_AND_RETURN(0);
+      return 0;
     } else {
-      const char* const filename = (const char*)GET_WARGV(argv, c);
+      const char* const filename = argv[c];
       const uint8_t* data = NULL;
       size_t data_size = 0;
       int q;
       ok = ImgIoUtilReadFile(filename, &data, &data_size);
       if (!ok) break;
       q = VP8EstimateQuality(data, data_size);
-      if (!quiet) WPRINTF("[%s] ", (const W_CHAR*)filename);
+      if (!quiet) printf("[%s] ", filename);
       if (q < 0) {
         fprintf(stderr, "Not a WebP file, or not a lossy WebP file.\n");
         ok = 0;
@@ -50,5 +46,5 @@ int main(int argc, const char *argv[]) {
       free((void*)data);
     }
   }
-  FREE_WARGV_AND_RETURN(ok ? 0 : 1);
+  return ok ? 0 : 1;
 }

extras/webp_to_sdl.c

@@ -12,7 +12,7 @@
 // Author: James Zern (jzern@google.com)
 
 #ifdef HAVE_CONFIG_H
-#include "src/webp/config.h"
+#include "webp/config.h"
 #endif
 
 #if defined(WEBP_HAVE_SDL)
@@ -20,7 +20,7 @@
 #include "webp_to_sdl.h"
 
 #include <stdio.h>
-#include "src/webp/decode.h"
+#include "webp/decode.h"
 
 #if defined(WEBP_HAVE_JUST_SDL_H)
 #include <SDL.h>
@@ -28,7 +28,6 @@
 #include <SDL/SDL.h>
 #endif
 
-static int init_ok = 0;
 int WebpToSDL(const char* data, unsigned int data_size) {
   int ok = 0;
   VP8StatusCode status;
@@ -40,13 +39,10 @@ int WebpToSDL(const char* data, unsigned int data_size) {
 
   if (!WebPInitDecoderConfig(&config)) {
     fprintf(stderr, "Library version mismatch!\n");
-    return 0;
+    return 1;
   }
 
-  if (!init_ok) {
-    SDL_Init(SDL_INIT_VIDEO);
-    init_ok = 1;
-  }
+  SDL_Init(SDL_INIT_VIDEO);
 
   status = WebPGetFeatures((uint8_t*)data, (size_t)data_size, &config.input);
   if (status != VP8_STATUS_OK) goto Error;
@@ -101,7 +97,6 @@ int WebpToSDL(const char* data, unsigned int data_size) {
  Error:
   SDL_FreeSurface(surface);
   SDL_FreeSurface(screen);
-  WebPFreeDecBuffer(output);
   return ok;
 }
 

imageio/Makefile.am

@@ -1,20 +1,13 @@
 AM_CPPFLAGS += -I$(top_builddir)/src -I$(top_srcdir)/src
-noinst_LTLIBRARIES =
-noinst_LTLIBRARIES += libimageio_util.la
-if BUILD_DEMUX
-  noinst_LTLIBRARIES += libimagedec.la
-endif
-noinst_LTLIBRARIES += libimageenc.la
+noinst_LTLIBRARIES = libimageio_util.la libimagedec.la libimageenc.la
 
 noinst_HEADERS =
 noinst_HEADERS += ../src/webp/decode.h
 noinst_HEADERS += ../src/webp/types.h
 
-libimageio_util_la_SOURCES =
-libimageio_util_la_SOURCES += imageio_util.c imageio_util.h
+libimageio_util_la_SOURCES = imageio_util.c imageio_util.h
 
-libimagedec_la_SOURCES  =
-libimagedec_la_SOURCES += image_dec.c image_dec.h
+libimagedec_la_SOURCES  = image_dec.c image_dec.h
 libimagedec_la_SOURCES += jpegdec.c jpegdec.h
 libimagedec_la_SOURCES += metadata.c metadata.h
 libimagedec_la_SOURCES += pngdec.c pngdec.h
@@ -23,10 +16,8 @@ libimagedec_la_SOURCES += tiffdec.c tiffdec.h
 libimagedec_la_SOURCES += webpdec.c webpdec.h
 libimagedec_la_SOURCES += wicdec.c wicdec.h
 libimagedec_la_CPPFLAGS = $(JPEG_INCLUDES) $(PNG_INCLUDES) $(TIFF_INCLUDES)
-libimagedec_la_CPPFLAGS += $(AM_CPPFLAGS)
-libimagedec_la_LIBADD = ../src/demux/libwebpdemux.la
+libimagedec_la_CPPFLAGS += $(AM_CPPFLAGS) $(USE_EXPERIMENTAL_CODE)
 
-libimageenc_la_SOURCES  =
-libimageenc_la_SOURCES += image_enc.c image_enc.h
+libimageenc_la_SOURCES  = image_enc.c image_enc.h
 libimageenc_la_CPPFLAGS = $(JPEG_INCLUDES) $(PNG_INCLUDES) $(TIFF_INCLUDES)
-libimageenc_la_CPPFLAGS += $(AM_CPPFLAGS)
+libimageenc_la_CPPFLAGS += $(AM_CPPFLAGS) $(USE_EXPERIMENTAL_CODE)

imageio/image_enc.c

@@ -29,13 +29,11 @@
                          // code with COBJMACROS.
 #include <ole2.h>  // CreateStreamOnHGlobal()
 #include <shlwapi.h>
-#include <tchar.h>
 #include <windows.h>
 #include <wincodec.h>
 #endif
 
 #include "./imageio_util.h"
-#include "../examples/unicode.h"
 
 //------------------------------------------------------------------------------
 // PNG
@@ -63,12 +61,11 @@ static HRESULT CreateOutputStream(const char* out_file_name,
     // Output to a memory buffer. This is freed when 'stream' is released.
     IFS(CreateStreamOnHGlobal(NULL, TRUE, stream));
   } else {
-    IFS(SHCreateStreamOnFile((const LPTSTR)out_file_name,
-                             STGM_WRITE | STGM_CREATE, stream));
+    IFS(SHCreateStreamOnFileA(out_file_name, STGM_WRITE | STGM_CREATE, stream));
   }
   if (FAILED(hr)) {
-    _ftprintf(stderr, _T("Error opening output file %s (%08lx)\n"),
-              (const LPTSTR)out_file_name, hr);
+    fprintf(stderr, "Error opening output file %s (%08lx)\n",
+            out_file_name, hr);
   }
   return hr;
 }
@@ -161,8 +158,14 @@ static void PNGAPI PNGErrorFunction(png_structp png, png_const_charp dummy) {
 }
 
 int WebPWritePNG(FILE* out_file, const WebPDecBuffer* const buffer) {
+  const uint32_t width = buffer->width;
+  const uint32_t height = buffer->height;
+  png_bytep row = buffer->u.RGBA.rgba;
+  const int stride = buffer->u.RGBA.stride;
+  const int has_alpha = WebPIsAlphaMode(buffer->colorspace);
   volatile png_structp png;
   volatile png_infop info;
+  png_uint_32 y;
 
   if (out_file == NULL || buffer == NULL) return 0;
 
@@ -181,23 +184,14 @@ int WebPWritePNG(FILE* out_file, const WebPDecBuffer* const buffer) {
     return 0;
   }
   png_init_io(png, out_file);
-  {
-    const uint32_t width = buffer->width;
-    const uint32_t height = buffer->height;
-    png_bytep row = buffer->u.RGBA.rgba;
-    const int stride = buffer->u.RGBA.stride;
-    const int has_alpha = WebPIsAlphaMode(buffer->colorspace);
-    uint32_t y;
-
-    png_set_IHDR(png, info, width, height, 8,
-                 has_alpha ? PNG_COLOR_TYPE_RGBA : PNG_COLOR_TYPE_RGB,
-                 PNG_INTERLACE_NONE, PNG_COMPRESSION_TYPE_DEFAULT,
-                 PNG_FILTER_TYPE_DEFAULT);
-    png_write_info(png, info);
-    for (y = 0; y < height; ++y) {
-      png_write_rows(png, &row, 1);
-      row += stride;
-    }
+  png_set_IHDR(png, info, width, height, 8,
+               has_alpha ? PNG_COLOR_TYPE_RGBA : PNG_COLOR_TYPE_RGB,
+               PNG_INTERLACE_NONE, PNG_COMPRESSION_TYPE_DEFAULT,
+               PNG_FILTER_TYPE_DEFAULT);
+  png_write_info(png, info);
+  for (y = 0; y < height; ++y) {
+    png_write_rows(png, &row, 1);
+    row += stride;
   }
   png_write_end(png, info);
   png_destroy_write_struct((png_structpp)&png, (png_infopp)&info);
@@ -548,26 +542,22 @@ int WebPWriteYUV(FILE* fout, const WebPDecBuffer* const buffer) {
 // Generic top-level call
 
 int WebPSaveImage(const WebPDecBuffer* const buffer,
-                  WebPOutputFileFormat format,
-                  const char* const out_file_name) {
+                  WebPOutputFileFormat format, const char* const out_file) {
   FILE* fout = NULL;
   int needs_open_file = 1;
-  const int use_stdout =
-      (out_file_name != NULL) && !WSTRCMP(out_file_name, "-");
+  const int use_stdout = (out_file != NULL) && !strcmp(out_file, "-");
   int ok = 1;
 
-  if (buffer == NULL || out_file_name == NULL) return 0;
+  if (buffer == NULL || out_file == NULL) return 0;
 
 #ifdef HAVE_WINCODEC_H
   needs_open_file = (format != PNG);
 #endif
 
   if (needs_open_file) {
-    fout = use_stdout ? ImgIoUtilSetBinaryMode(stdout)
-                      : WFOPEN(out_file_name, "wb");
+    fout = use_stdout ? ImgIoUtilSetBinaryMode(stdout) : fopen(out_file, "wb");
     if (fout == NULL) {
-      WFPRINTF(stderr, "Error opening output file %s\n",
-               (const W_CHAR*)out_file_name);
+      fprintf(stderr, "Error opening output file %s\n", out_file);
       return 0;
     }
   }
@@ -576,7 +566,7 @@ int WebPSaveImage(const WebPDecBuffer* const buffer,
       format == RGBA || format == BGRA || format == ARGB ||
       format == rgbA || format == bgrA || format == Argb) {
 #ifdef HAVE_WINCODEC_H
-    ok &= WebPWritePNG(out_file_name, use_stdout, buffer);
+    ok &= WebPWritePNG(out_file, use_stdout, buffer);
 #else
     ok &= WebPWritePNG(fout, buffer);
 #endif

imageio/imageio_util.c

@@ -18,7 +18,6 @@
 #endif
 #include <stdlib.h>
 #include <string.h>
-#include "../examples/unicode.h"
 
 // -----------------------------------------------------------------------------
 // File I/O
@@ -48,8 +47,7 @@ int ImgIoUtilReadFromStdin(const uint8_t** data, size_t* data_size) {
   while (!feof(stdin)) {
     // We double the buffer size each time and read as much as possible.
     const size_t extra_size = (max_size == 0) ? kBlockSize : max_size;
-    // we allocate one extra byte for the \0 terminator
-    void* const new_data = realloc(input, max_size + extra_size + 1);
+    void* const new_data = realloc(input, max_size + extra_size);
     if (new_data == NULL) goto Error;
     input = (uint8_t*)new_data;
     max_size += extra_size;
@@ -57,7 +55,6 @@ int ImgIoUtilReadFromStdin(const uint8_t** data, size_t* data_size) {
     if (size < max_size) break;
   }
   if (ferror(stdin)) goto Error;
-  if (input != NULL) input[size] = '\0';  // convenient 0-terminator
   *data = input;
   *data_size = size;
   return 1;
@@ -71,10 +68,10 @@ int ImgIoUtilReadFromStdin(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;
+  void* file_data;
   size_t file_size;
   FILE* in;
-  const int from_stdin = (file_name == NULL) || !WSTRCMP(file_name, "-");
+  const int from_stdin = (file_name == NULL) || !strcmp(file_name, "-");
 
   if (from_stdin) return ImgIoUtilReadFromStdin(data, data_size);
 
@@ -82,52 +79,42 @@ int ImgIoUtilReadFile(const char* const file_name,
   *data = NULL;
   *data_size = 0;
 
-  in = WFOPEN(file_name, "rb");
+  in = fopen(file_name, "rb");
   if (in == NULL) {
-    WFPRINTF(stderr, "cannot open input file '%s'\n", (const W_CHAR*)file_name);
+    fprintf(stderr, "cannot open input file '%s'\n", file_name);
     return 0;
   }
   fseek(in, 0, SEEK_END);
   file_size = ftell(in);
   fseek(in, 0, SEEK_SET);
-  // we allocate one extra byte for the \0 terminator
-  file_data = (uint8_t*)malloc(file_size + 1);
-  if (file_data == NULL) {
-    fclose(in);
-    WFPRINTF(stderr, "memory allocation failure when reading file %s\n",
-             (const W_CHAR*)file_name);
-    return 0;
-  }
+  file_data = malloc(file_size);
+  if (file_data == NULL) return 0;
   ok = (fread(file_data, file_size, 1, in) == 1);
   fclose(in);
 
   if (!ok) {
-    WFPRINTF(stderr, "Could not read %d bytes of data from file %s\n",
-             (int)file_size, (const W_CHAR*)file_name);
+    fprintf(stderr, "Could not read %d bytes of data from file %s\n",
+            (int)file_size, file_name);
     free(file_data);
     return 0;
   }
-  file_data[file_size] = '\0';  // convenient 0-terminator
-  *data = file_data;
+  *data = (uint8_t*)file_data;
   *data_size = file_size;
   return 1;
 }
 
-// -----------------------------------------------------------------------------
-
 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, "-");
+  const int to_stdout = (file_name == NULL) || !strcmp(file_name, "-");
 
   if (data == NULL) {
     return 0;
   }
-  out = to_stdout ? ImgIoUtilSetBinaryMode(stdout) : WFOPEN(file_name, "wb");
+  out = to_stdout ? ImgIoUtilSetBinaryMode(stdout) : fopen(file_name, "wb");
   if (out == NULL) {
-    WFPRINTF(stderr, "Error! Cannot open output file '%s'\n",
-             (const W_CHAR*)file_name);
+    fprintf(stderr, "Error! Cannot open output file '%s'\n", file_name);
     return 0;
   }
   ok = (fwrite(data, data_size, 1, out) == 1);
@@ -150,11 +137,7 @@ void ImgIoUtilCopyPlane(const uint8_t* src, int src_stride,
 
 int ImgIoUtilCheckSizeArgumentsOverflow(uint64_t nmemb, size_t size) {
   const uint64_t total_size = nmemb * size;
-  int ok = (total_size == (size_t)total_size);
-#if defined(WEBP_MAX_IMAGE_SIZE)
-  ok = ok && (total_size <= (uint64_t)WEBP_MAX_IMAGE_SIZE);
-#endif
-  return ok;
+  return (total_size == (size_t)total_size);
 }
 
 // -----------------------------------------------------------------------------

imageio/imageio_util.h

@@ -30,9 +30,6 @@ FILE* ImgIoUtilSetBinaryMode(FILE* file);
 // Allocates storage for entire file 'file_name' and returns contents and size
 // in 'data' and 'data_size'. Returns 1 on success, 0 otherwise. '*data' should
 // be deleted using free().
-// Note: for convenience, the data will be null-terminated with an extra byte
-// (not accounted for in *data_size), in case the file is text and intended
-// 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,

imageio/jpegdec.c

@@ -206,7 +206,6 @@ struct my_error_mgr {
 
 static void my_error_exit(j_common_ptr dinfo) {
   struct my_error_mgr* myerr = (struct my_error_mgr*)dinfo->err;
-  fprintf(stderr, "libjpeg error: ");
   dinfo->err->output_message(dinfo);
   longjmp(myerr->setjmp_buffer, 1);
 }
@@ -305,18 +304,18 @@ int ReadJPEG(const uint8_t* const data, size_t data_size,
 
   if (stride != (int)stride ||
       !ImgIoUtilCheckSizeArgumentsOverflow(stride, height)) {
-    goto Error;
+    goto End;
   }
 
   rgb = (uint8_t*)malloc((size_t)stride * height);
   if (rgb == NULL) {
-    goto Error;
+    goto End;
   }
   buffer[0] = (JSAMPLE*)rgb;
 
   while (dinfo.output_scanline < dinfo.output_height) {
     if (jpeg_read_scanlines((j_decompress_ptr)&dinfo, buffer, 1) != 1) {
-      goto Error;
+      goto End;
     }
     buffer[0] += stride;
   }

imageio/pngdec.c

@@ -18,9 +18,6 @@
 #include <stdio.h>
 
 #ifdef WEBP_HAVE_PNG
-#ifndef PNG_USER_MEM_SUPPORTED
-#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 <stdlib.h>
@@ -30,33 +27,11 @@
 #include "./imageio_util.h"
 #include "./metadata.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)))
-
 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)
-typedef png_alloc_size_t LocalPngAllocSize;
-#else
-typedef png_size_t LocalPngAllocSize;
-#endif
-
-static png_voidp MallocFunc(png_structp png_ptr, LocalPngAllocSize size) {
-  (void)png_ptr;
-  if (size != (size_t)size) return NULL;
-  if (!ImgIoUtilCheckSizeArgumentsOverflow(size, 1)) return NULL;
-  return (png_voidp)malloc((size_t)size);
-}
-
-static void FreeFunc(png_structp png_ptr, png_voidp ptr) {
-  (void)png_ptr;
-  free(ptr);
-}
-
 // Converts the NULL terminated 'hexstring' which contains 2-byte character
 // representations of hex values to raw data.
 // 'hexstring' may contain values consisting of [A-F][a-f][0-9] in pairs,
@@ -196,10 +171,11 @@ static int ExtractMetadataFromPNG(png_structp png,
     {
       png_charp name;
       int comp_type;
-#if LOCAL_PNG_PREREQ(1,5)
-      png_bytep profile;
-#else
+#if ((PNG_LIBPNG_VER_MAJOR << 8) | PNG_LIBPNG_VER_MINOR << 0) < \
+    ((1 << 8) | (5 << 0))
       png_charp profile;
+#else  // >= libpng 1.5.0
+      png_bytep profile;
 #endif
       png_uint_32 len;
 
@@ -209,6 +185,7 @@ static int ExtractMetadataFromPNG(png_structp png,
       }
     }
   }
+
   return 1;
 }
 
@@ -248,8 +225,7 @@ 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(PNG_LIBPNG_VER_STRING, 0, 0, 0);
   if (png == NULL) goto End;
 
   png_set_error_fn(png, 0, error_function, NULL);
@@ -289,16 +265,6 @@ int ReadPNG(const uint8_t* const data, size_t data_size,
     has_alpha = !!(color_type & PNG_COLOR_MASK_ALPHA);
   }
 
-  // Apply gamma correction if needed.
-  {
-    double image_gamma = 1 / 2.2, screen_gamma = 2.2;
-    int srgb_intent;
-    if (png_get_sRGB(png, info, &srgb_intent) ||
-        png_get_gAMA(png, info, &image_gamma)) {
-      png_set_gamma(png, screen_gamma, image_gamma);
-    }
-  }
-
   if (!keep_alpha) {
     png_set_strip_alpha(png);
     has_alpha = 0;

imageio/pnmdec.c

@@ -117,13 +117,8 @@ static size_t ReadPAMFields(PNMInfo* const info, size_t off) {
     }
   }
   if (!(info->seen_flags & TUPLE_FLAG)) {
-    if (info->depth > 0 && info->depth <= 4 && info->depth != 2) {
-      info->seen_flags |= TUPLE_FLAG;
-      info->bytes_per_px = info->depth * (info->max_value > 255 ? 2 : 1);
-    } else {
-      fprintf(stderr, "PAM: invalid bitdepth (%d).\n", info->depth);
-      return 0;
-    }
+    info->seen_flags |= TUPLE_FLAG;
+    info->bytes_per_px = info->depth * (info->max_value > 255 ? 2 : 1);
   }
   if (info->seen_flags != ALL_NEEDED_FLAGS) {
     fprintf(stderr, "PAM: incomplete header.\n");
@@ -165,7 +160,7 @@ static size_t ReadHeader(PNMInfo* const info) {
   // perform some basic numerical validation
   if (info->width <= 0 || info->height <= 0 ||
       info->type <= 0 || info->type >= 9 ||
-      info->depth <= 0 || info->depth == 2 || info->depth > 4 ||
+      info->depth <= 0 || info->depth > 4 ||
       info->bytes_per_px < info->depth ||
       info->max_value <= 0 || info->max_value >= 65536) {
     return 0;

imageio/tiffdec.c

@@ -121,6 +121,7 @@ static tsize_t MyRead(thandle_t opaque, void* dst, tsize_t size) {
 // (we don't want to force a dependency to a libdspdec library).
 #define MFIX 24    // 24bit fixed-point arithmetic
 #define HALF ((1u << MFIX) >> 1)
+#define KINV_255 ((1u << MFIX) / 255u)
 
 static uint32_t Unmult(uint8_t x, uint32_t mult) {
   const uint32_t v = (x * mult + HALF) >> MFIX;
@@ -131,9 +132,6 @@ static WEBP_INLINE uint32_t GetScale(uint32_t a) {
   return (255u << MFIX) / a;
 }
 
-#undef MFIX
-#undef HALF
-
 static void MultARGBRow(uint8_t* ptr, int width) {
   int x;
   for (x = 0; x < width; ++x, ptr += 4) {

imageio/webpdec.c

@@ -9,20 +9,13 @@
 //
 // WebP decode.
 
-#ifdef HAVE_CONFIG_H
-#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"
 
@@ -44,7 +37,7 @@ static void PrintAnimationWarning(const WebPDecoderConfig* const config) {
 }
 
 void PrintWebPError(const char* const in_file, int status) {
-  WFPRINTF(stderr, "Decoding of %s failed.\n", (const W_CHAR*)in_file);
+  fprintf(stderr, "Decoding of %s failed.\n", in_file);
   fprintf(stderr, "Status: %d", status);
   if (status >= VP8_STATUS_OK && status <= VP8_STATUS_NOT_ENOUGH_DATA) {
     fprintf(stderr, "(%s)", kStatusMessages[status]);
@@ -98,47 +91,25 @@ VP8StatusCode DecodeWebPIncremental(
       fprintf(stderr, "Failed during WebPINewDecoder().\n");
       return VP8_STATUS_OUT_OF_MEMORY;
     } else {
+#ifdef WEBP_EXPERIMENTAL_FEATURES
+      size_t size = 0;
+      const size_t incr = 2 + (data_size / 20);
+      while (size < data_size) {
+        size_t next_size = size + (rand() % incr);
+        if (next_size > data_size) next_size = data_size;
+        status = WebPIUpdate(idec, data, next_size);
+        if (status != VP8_STATUS_OK && status != VP8_STATUS_SUSPENDED) break;
+        size = next_size;
+      }
+#else
       status = WebPIUpdate(idec, data, data_size);
+#endif
       WebPIDelete(idec);
     }
   }
   return status;
 }
 
-// -----------------------------------------------------------------------------
-// Metadata
-
-static int ExtractMetadata(const uint8_t* const data, size_t data_size,
-                           Metadata* const metadata) {
-  WebPData webp_data = { data, data_size };
-  WebPDemuxer* const demux = WebPDemux(&webp_data);
-  WebPChunkIterator chunk_iter;
-  uint32_t flags;
-
-  if (demux == NULL) return 0;
-  assert(metadata != NULL);
-
-  flags = WebPDemuxGetI(demux, WEBP_FF_FORMAT_FLAGS);
-
-  if ((flags & ICCP_FLAG) && WebPDemuxGetChunk(demux, "ICCP", 1, &chunk_iter)) {
-    MetadataCopy((const char*)chunk_iter.chunk.bytes, chunk_iter.chunk.size,
-                 &metadata->iccp);
-    WebPDemuxReleaseChunkIterator(&chunk_iter);
-  }
-  if ((flags & EXIF_FLAG) && WebPDemuxGetChunk(demux, "EXIF", 1, &chunk_iter)) {
-    MetadataCopy((const char*)chunk_iter.chunk.bytes, chunk_iter.chunk.size,
-                 &metadata->exif);
-    WebPDemuxReleaseChunkIterator(&chunk_iter);
-  }
-  if ((flags & XMP_FLAG) && WebPDemuxGetChunk(demux, "XMP ", 1, &chunk_iter)) {
-    MetadataCopy((const char*)chunk_iter.chunk.bytes, chunk_iter.chunk.size,
-                 &metadata->xmp);
-    WebPDemuxReleaseChunkIterator(&chunk_iter);
-  }
-  WebPDemuxDelete(demux);
-  return 1;
-}
-
 // -----------------------------------------------------------------------------
 
 int ReadWebP(const uint8_t* const data, size_t data_size,
@@ -152,6 +123,11 @@ int ReadWebP(const uint8_t* const data, size_t data_size,
 
   if (data == NULL || data_size == 0 || pic == NULL) return 0;
 
+  // TODO(jzern): add Exif/XMP/ICC extraction.
+  if (metadata != NULL) {
+    fprintf(stderr, "Warning: metadata extraction from WebP is unsupported.\n");
+  }
+
   if (!WebPInitDecoderConfig(&config)) {
     fprintf(stderr, "Library version mismatch!\n");
     return 0;
@@ -165,32 +141,17 @@ int ReadWebP(const uint8_t* const data, size_t data_size,
 
   do {
     const int has_alpha = keep_alpha && bitstream->has_alpha;
-    uint64_t stride;
     pic->width = bitstream->width;
     pic->height = bitstream->height;
-    if (pic->use_argb) {
-      stride = (uint64_t)bitstream->width * 4;
-    } else {
-      stride = (uint64_t)bitstream->width * (has_alpha ? 5 : 3) / 2;
-      pic->colorspace = has_alpha ? WEBP_YUV420A : WEBP_YUV420;
-    }
-
-    if (!ImgIoUtilCheckSizeArgumentsOverflow(stride, bitstream->height)) {
-      status = VP8_STATUS_OUT_OF_MEMORY;
-      break;
-    }
-
+    if (!pic->use_argb) pic->colorspace = has_alpha ? WEBP_YUV420A
+                                                    : WEBP_YUV420;
     ok = WebPPictureAlloc(pic);
     if (!ok) {
       status = VP8_STATUS_OUT_OF_MEMORY;
       break;
     }
     if (pic->use_argb) {
-#ifdef WORDS_BIGENDIAN
-      output_buffer->colorspace = MODE_ARGB;
-#else
       output_buffer->colorspace = MODE_BGRA;
-#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;
@@ -213,6 +174,7 @@ int ReadWebP(const uint8_t* const data, size_t data_size,
 
     status = DecodeWebP(data, data_size, &config);
     ok = (status == VP8_STATUS_OK);
+    if (!ok) WebPPictureFree(pic);
     if (ok && !keep_alpha && pic->use_argb) {
       // Need to wipe out the alpha value, as requested.
       int x, y;
@@ -226,18 +188,9 @@ int ReadWebP(const uint8_t* const data, size_t data_size,
 
   if (status != VP8_STATUS_OK) {
     PrintWebPError("input data", status);
-    ok = 0;
   }
 
   WebPFreeDecBuffer(output_buffer);
-
-  if (ok && metadata != NULL) {
-    ok = ExtractMetadata(data, data_size, metadata);
-    if (!ok) {
-      PrintWebPError("metadata", VP8_STATUS_BITSTREAM_ERROR);
-    }
-  }
-  if (!ok) WebPPictureFree(pic);
   return ok;
 }
 

imageio/wicdec.c

@@ -29,14 +29,12 @@
                          // code with COBJMACROS.
 #include <ole2.h>  // CreateStreamOnHGlobal()
 #include <shlwapi.h>
-#include <tchar.h>
 #include <windows.h>
 #include <wincodec.h>
 
-#include "../examples/unicode.h"
+#include "webp/encode.h"
 #include "./imageio_util.h"
 #include "./metadata.h"
-#include "webp/encode.h"
 
 #define IFS(fn)                                                     \
   do {                                                              \
@@ -87,7 +85,7 @@ WEBP_DEFINE_GUID(GUID_WICPixelFormat64bppRGBA_,
 
 static HRESULT OpenInputStream(const char* filename, IStream** stream) {
   HRESULT hr = S_OK;
-  if (!WSTRCMP(filename, "-")) {
+  if (!strcmp(filename, "-")) {
     const uint8_t* data = NULL;
     size_t data_size = 0;
     const int ok = ImgIoUtilReadFile(filename, &data, &data_size);
@@ -110,12 +108,11 @@ static HRESULT OpenInputStream(const char* filename, IStream** stream) {
       hr = E_FAIL;
     }
   } else {
-    IFS(SHCreateStreamOnFile((const LPTSTR)filename, STGM_READ, stream));
+    IFS(SHCreateStreamOnFileA(filename, STGM_READ, stream));
   }
 
   if (FAILED(hr)) {
-    _ftprintf(stderr, _T("Error opening input file %s (%08lx)\n"),
-              (const LPTSTR)filename, hr);
+    fprintf(stderr, "Error opening input file %s (%08lx)\n", filename, hr);
   }
   return hr;
 }

iosbuild.sh

@@ -35,15 +35,11 @@ readonly TOPDIR=$(pwd)
 readonly BUILDDIR="${TOPDIR}/iosbuild"
 readonly TARGETDIR="${TOPDIR}/WebP.framework"
 readonly DECTARGETDIR="${TOPDIR}/WebPDecoder.framework"
-readonly MUXTARGETDIR="${TOPDIR}/WebPMux.framework"
-readonly DEMUXTARGETDIR="${TOPDIR}/WebPDemux.framework"
 readonly DEVELOPER=$(xcode-select --print-path)
 readonly PLATFORMSROOT="${DEVELOPER}/Platforms"
 readonly LIPO=$(xcrun -sdk iphoneos${SDK} -find lipo)
 LIBLIST=''
 DECLIBLIST=''
-MUXLIBLIST=''
-DEMUXLIBLIST=''
 
 if [[ -z "${SDK}" ]]; then
   echo "iOS SDK not available"
@@ -57,10 +53,8 @@ else
   echo "iOS SDK Version ${SDK}"
 fi
 
-rm -rf ${BUILDDIR} ${TARGETDIR} ${DECTARGETDIR} \
-    ${MUXTARGETDIR} ${DEMUXTARGETDIR}
-mkdir -p ${BUILDDIR} ${TARGETDIR}/Headers/ ${DECTARGETDIR}/Headers/ \
-    ${MUXTARGETDIR}/Headers/ ${DEMUXTARGETDIR}/Headers/
+rm -rf ${BUILDDIR} ${TARGETDIR} ${DECTARGETDIR}
+mkdir -p ${BUILDDIR} ${TARGETDIR}/Headers/ ${DECTARGETDIR}/Headers/
 
 if [[ ! -e ${SRCDIR}/configure ]]; then
   if ! (cd ${SRCDIR} && sh autogen.sh); then
@@ -111,7 +105,6 @@ for PLATFORM in ${PLATFORMS}; do
     --build=$(${SRCDIR}/config.guess) \
     --disable-shared --enable-static \
     --enable-libwebpdecoder --enable-swap-16bit-csp \
-    --enable-libwebpmux \
     CFLAGS="${CFLAGS}"
   set +x
 
@@ -122,8 +115,6 @@ for PLATFORM in ${PLATFORMS}; do
 
   LIBLIST+=" ${ROOTDIR}/lib/libwebp.a"
   DECLIBLIST+=" ${ROOTDIR}/lib/libwebpdecoder.a"
-  MUXLIBLIST+=" ${ROOTDIR}/lib/libwebpmux.a"
-  DEMUXLIBLIST+=" ${ROOTDIR}/lib/libwebpdemux.a"
 
   make clean
   cd ..
@@ -131,20 +122,8 @@ for PLATFORM in ${PLATFORMS}; do
   export PATH=${OLDPATH}
 done
 
-echo "LIBLIST = ${LIBLIST}"
 cp -a ${SRCDIR}/src/webp/{decode,encode,types}.h ${TARGETDIR}/Headers/
 ${LIPO} -create ${LIBLIST} -output ${TARGETDIR}/WebP
 
-echo "DECLIBLIST = ${DECLIBLIST}"
 cp -a ${SRCDIR}/src/webp/{decode,types}.h ${DECTARGETDIR}/Headers/
 ${LIPO} -create ${DECLIBLIST} -output ${DECTARGETDIR}/WebPDecoder
-
-echo "MUXLIBLIST = ${MUXLIBLIST}"
-cp -a ${SRCDIR}/src/webp/{types,mux,mux_types}.h \
-    ${MUXTARGETDIR}/Headers/
-${LIPO} -create ${MUXLIBLIST} -output ${MUXTARGETDIR}/WebPMux
-
-echo "DEMUXLIBLIST = ${DEMUXLIBLIST}"
-cp -a ${SRCDIR}/src/webp/{decode,types,mux_types,demux}.h \
-    ${DEMUXTARGETDIR}/Headers/
-${LIPO} -create ${DEMUXLIBLIST} -output ${DEMUXTARGETDIR}/WebPDemux

makefile.unix

@@ -25,7 +25,6 @@ ifeq ($(strip $(shell uname)), Darwin)
   # Failure observed with: gcc 4.2.1 and 4.0.1.
   EXTRA_FLAGS += -fno-common
   EXTRA_FLAGS += -DHAVE_GLUT_GLUT_H
-  EXTRA_FLAGS += -Wno-deprecated-declarations
   EXTRA_FLAGS += -I/opt/local/include
   EXTRA_LIBS  += -L/opt/local/lib
   GL_LIBS = -framework GLUT -framework OpenGL
@@ -35,16 +34,6 @@ else
   GL_LIBS = -lglut -lGL
 endif
 
-# SDL flags: use sdl-config if it exists
-SDL_CONFIG = $(shell sdl-config --version 2> /dev/null)
-ifneq ($(SDL_CONFIG),)
-  SDL_LIBS = $(shell sdl-config --libs)
-  SDL_FLAGS = $(shell sdl-config --cflags)
-else
-  # use best-guess
-  SDL_LIBS = -lSDL
-  SDL_FLAGS =
-endif
 
 # To install libraries on Mac OS X:
 # 1. Install MacPorts (http://www.macports.org/install.php)
@@ -64,8 +53,11 @@ endif
 # 'make -f makefile.unix EXTRA_FLAGS=-m32' to that effect.
 # EXTRA_FLAGS += -m32
 
+# Extra flags to enable experimental features and code
+# EXTRA_FLAGS += -DWEBP_EXPERIMENTAL_FEATURES
+
 # Extra flags to enable byte swap for 16 bit colorspaces.
-# EXTRA_FLAGS += -DWEBP_SWAP_16BIT_CSP=1
+# EXTRA_FLAGS += -DWEBP_SWAP_16BIT_CSP
 
 # Extra flags to enable multi-threading
 EXTRA_FLAGS += -DWEBP_USE_THREAD
@@ -89,6 +81,12 @@ EXTRA_FLAGS += -DWEBP_HAVE_SSE41
 src/dsp/%_sse41.o: EXTRA_FLAGS += -msse4.1
 endif
 
+# AVX2-specific flags:
+ifeq ($(HAVE_AVX2), 1)
+EXTRA_FLAGS += -DWEBP_HAVE_AVX2
+src/dsp/%_avx2.o: EXTRA_FLAGS += -mavx2
+endif
+
 # NEON-specific flags:
 # EXTRA_FLAGS += -march=armv7-a -mfloat-abi=hard -mfpu=neon -mtune=cortex-a8
 # -> seems to make the overall lib slower: -fno-split-wide-types
@@ -105,23 +103,14 @@ endif
 
 AR = ar
 ARFLAGS = r
-CPPFLAGS = -I. -Isrc/ -Wall
-ifeq ($(DEBUG), 1)
-  CFLAGS = -g
-else
-  CFLAGS = -O3 -DNDEBUG
-endif
-CFLAGS += $(EXTRA_FLAGS)
+CPPFLAGS = -Isrc/ -Wall
+CFLAGS = -O3 -DNDEBUG $(EXTRA_FLAGS)
 CC = gcc
 INSTALL = install
 GROFF = /usr/bin/groff
 COL = /usr/bin/col
 LDFLAGS = $(EXTRA_LIBS) $(EXTRA_FLAGS) -lm
 
-ifdef BITTRACE
-CFLAGS += -DBITTRACE=$(BITTRACE)
-endif
-
 ANIM_UTIL_OBJS = \
     examples/anim_util.o \
 
@@ -177,21 +166,22 @@ DSP_DEC_OBJS = \
     src/dsp/upsampling_msa.o \
     src/dsp/upsampling_neon.o \
     src/dsp/upsampling_sse2.o \
-    src/dsp/upsampling_sse41.o \
     src/dsp/yuv.o \
     src/dsp/yuv_mips32.o \
     src/dsp/yuv_mips_dsp_r2.o \
     src/dsp/yuv_neon.o \
     src/dsp/yuv_sse2.o \
-    src/dsp/yuv_sse41.o \
 
 DSP_ENC_OBJS = \
+    src/dsp/argb.o \
+    src/dsp/argb_mips_dsp_r2.o \
+    src/dsp/argb_sse2.o \
     src/dsp/cost.o \
     src/dsp/cost_mips32.o \
     src/dsp/cost_mips_dsp_r2.o \
-    src/dsp/cost_neon.o \
     src/dsp/cost_sse2.o \
     src/dsp/enc.o \
+    src/dsp/enc_avx2.o \
     src/dsp/enc_mips32.o \
     src/dsp/enc_mips_dsp_r2.o \
     src/dsp/enc_msa.o \
@@ -215,6 +205,7 @@ ENC_OBJS = \
     src/enc/backward_references_enc.o \
     src/enc/config_enc.o \
     src/enc/cost_enc.o \
+    src/enc/delta_palettization_enc.o \
     src/enc/filter_enc.o \
     src/enc/frame_enc.o \
     src/enc/histogram_enc.o \
@@ -312,6 +303,7 @@ HDRS = \
     src/dsp/yuv.h \
     src/enc/backward_references_enc.h \
     src/enc/cost_enc.h \
+    src/enc/delta_palettization_enc.h \
     src/enc/histogram_enc.h \
     src/enc/vp8i_enc.h \
     src/enc/vp8li_enc.h \
@@ -343,8 +335,7 @@ OUT_LIBS += src/libwebp.a
 EXTRA_LIB = extras/libwebpextras.a
 OUT_EXAMPLES = examples/cwebp examples/dwebp
 EXTRA_EXAMPLES = examples/gif2webp examples/vwebp examples/webpmux \
-                 examples/anim_diff examples/anim_dump \
-                 examples/img2webp examples/webpinfo
+                 examples/anim_diff examples/img2webp examples/webpinfo
 OTHER_EXAMPLES = extras/get_disto extras/webp_quality extras/vwebp_sdl
 
 OUTPUT = $(OUT_LIBS) $(OUT_EXAMPLES)
@@ -372,7 +363,7 @@ src/utils/bit_reader_utils.o: src/utils/endian_inl_utils.h
 src/utils/bit_writer_utils.o: src/utils/endian_inl_utils.h
 
 %.o: %.c $(HDRS)
-	$(CC) $(CPPFLAGS) $(CFLAGS) -c $< -o $@
+	$(CC) $(CFLAGS) $(CPPFLAGS) -c $< -o $@
 
 examples/libanim_util.a: $(ANIM_UTIL_OBJS)
 examples/libexample_util.a: $(EX_UTIL_OBJS)
@@ -390,7 +381,6 @@ src/demux/libwebpdemux.a: $(LIBWEBPDEMUX_OBJS)
 	$(AR) $(ARFLAGS) $@ $^
 
 examples/anim_diff: examples/anim_diff.o $(ANIM_UTIL_OBJS) $(GIFDEC_OBJS)
-examples/anim_dump: examples/anim_dump.o $(ANIM_UTIL_OBJS) $(GIFDEC_OBJS)
 examples/cwebp: examples/cwebp.o
 examples/dwebp: examples/dwebp.o
 examples/gif2webp: examples/gif2webp.o $(GIFDEC_OBJS)
@@ -402,52 +392,39 @@ examples/webpinfo: examples/webpinfo.o
 examples/anim_diff: examples/libanim_util.a examples/libgifdec.a
 examples/anim_diff: src/demux/libwebpdemux.a examples/libexample_util.a
 examples/anim_diff: imageio/libimageio_util.a src/libwebp.a
-examples/anim_diff: override EXTRA_LIBS += $(GIF_LIBS)
+examples/anim_diff: EXTRA_LIBS += $(GIF_LIBS)
 examples/anim_diff: EXTRA_FLAGS += -DWEBP_HAVE_GIF
-examples/anim_dump: examples/libanim_util.a examples/libgifdec.a
-examples/anim_dump: src/demux/libwebpdemux.a
-examples/anim_dump: examples/libexample_util.a
-examples/anim_dump: imageio/libimageio_util.a
-examples/anim_dump: imageio/libimageenc.a
-examples/anim_dump: src/libwebp.a
-examples/anim_dump: override EXTRA_LIBS += $(GIF_LIBS) $(DWEBP_LIBS)
 examples/cwebp: examples/libexample_util.a
 examples/cwebp: imageio/libimagedec.a
-examples/cwebp: src/demux/libwebpdemux.a
 examples/cwebp: imageio/libimageio_util.a
 examples/cwebp: src/libwebp.a
-examples/cwebp: override EXTRA_LIBS += $(CWEBP_LIBS)
+examples/cwebp: EXTRA_LIBS += $(CWEBP_LIBS)
 examples/dwebp: examples/libexample_util.a
 examples/dwebp: imageio/libimagedec.a
-examples/dwebp: src/demux/libwebpdemux.a
 examples/dwebp: imageio/libimageenc.a
 examples/dwebp: imageio/libimageio_util.a
 examples/dwebp: src/libwebp.a
-examples/dwebp: override EXTRA_LIBS += $(DWEBP_LIBS)
+examples/dwebp: EXTRA_LIBS += $(DWEBP_LIBS)
 examples/gif2webp: examples/libexample_util.a imageio/libimageio_util.a
 examples/gif2webp: examples/libgifdec.a src/mux/libwebpmux.a src/libwebp.a
-examples/gif2webp: override EXTRA_LIBS += $(GIF_LIBS)
+examples/gif2webp: EXTRA_LIBS += $(GIF_LIBS)
 examples/gif2webp: EXTRA_FLAGS += -DWEBP_HAVE_GIF
 examples/vwebp: examples/libexample_util.a src/demux/libwebpdemux.a
 examples/vwebp: imageio/libimageio_util.a src/libwebp.a
-examples/vwebp: override EXTRA_LIBS += $(GL_LIBS)
+examples/vwebp: EXTRA_LIBS += $(GL_LIBS)
 examples/vwebp: EXTRA_FLAGS += -DWEBP_HAVE_GL
 examples/webpmux: examples/libexample_util.a imageio/libimageio_util.a
 examples/webpmux: src/mux/libwebpmux.a src/libwebpdecoder.a
 examples/img2webp: examples/libexample_util.a imageio/libimageio_util.a
 examples/img2webp: imageio/libimagedec.a
-examples/img2webp: src/demux/libwebpdemux.a
 examples/img2webp: src/mux/libwebpmux.a src/libwebp.a
-examples/img2webp: override EXTRA_LIBS += $(CWEBP_LIBS)
+examples/img2webp: EXTRA_LIBS += $(CWEBP_LIBS)
 examples/webpinfo: examples/libexample_util.a imageio/libimageio_util.a
 examples/webpinfo: src/libwebpdecoder.a
 
 extras/get_disto: extras/get_disto.o
-extras/get_disto: imageio/libimagedec.a
-extras/get_disto: src/demux/libwebpdemux.a
-extras/get_disto: imageio/libimageio_util.a
-extras/get_disto: src/libwebp.a
-extras/get_disto: override EXTRA_LIBS += $(CWEBP_LIBS)
+extras/get_disto: imageio/libimagedec.a imageio/libimageio_util.a src/libwebp.a
+extras/get_disto: EXTRA_LIBS += $(CWEBP_LIBS)
 
 extras/webp_quality: extras/webp_quality.o
 extras/webp_quality: imageio/libimageio_util.a
@@ -457,8 +434,8 @@ extras/vwebp_sdl: extras/vwebp_sdl.o
 extras/vwebp_sdl: extras/webp_to_sdl.o
 extras/vwebp_sdl: imageio/libimageio_util.a
 extras/vwebp_sdl: src/libwebp.a
-extras/vwebp_sdl: EXTRA_FLAGS += -DWEBP_HAVE_SDL $(SDL_FLAGS)
-extras/vwebp_sdl: override EXTRA_LIBS += $(SDL_LIBS)
+extras/vwebp_sdl: EXTRA_FLAGS += -DWEBP_HAVE_SDL
+extras/vwebp_sdl: EXTRA_LIBS += -lSDL
 
 $(OUT_EXAMPLES) $(EXTRA_EXAMPLES) $(OTHER_EXAMPLES):
 	$(CC) -o $@ $^ $(LDFLAGS)
@@ -477,7 +454,7 @@ dist: all
 	for m in man/[cdv]webp.1 man/gif2webp.1 man/webpmux.1 \
                  man/img2webp.1 man/webpinfo.1; do \
 	  basenam=$$(basename $$m .1); \
-	  $(GROFF) -t -e -man -T ascii $$m \
+	  $(GROFF) -t -e -man -T utf8 $$m \
 	    | $(COL) -bx >$(DESTDIR)/doc/$${basenam}.txt; \
 	  $(GROFF) -t -e -man -T html $$m \
 	    | $(COL) -bx >$(DESTDIR)/doc/$${basenam}.html; \

man/Makefile.am

@@ -1,13 +1,10 @@
 man_MANS = cwebp.1 dwebp.1
-if BUILD_MUX
+if WANT_MUX
   man_MANS += webpmux.1
 endif
 if BUILD_GIF2WEBP
   man_MANS += gif2webp.1
 endif
-if BUILD_IMG2WEBP
-  man_MANS += img2webp.1
-endif
 if BUILD_VWEBP
   man_MANS += vwebp.1
 endif

man/cwebp.1

@@ -1,5 +1,5 @@
 .\"                                      Hey, EMACS: -*- nroff -*-
-.TH CWEBP 1 "January 11, 2019"
+.TH CWEBP 1 "January 20, 2017"
 .SH NAME
 cwebp \- compress an image file to a WebP file
 .SH SYNOPSIS
@@ -41,12 +41,10 @@ the invisible pixel values (R/G/B or Y/U/V) will be preserved only if the
 \-exact option is used.
 .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.
+Use 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.
+Range is 0 (maximum preprocessing) to 100 (no preprocessing, the default).
 .TP
 .BI \-q " float
 Specify the compression factor for RGB channels between 0 and 100. The default

man/gif2webp.1

@@ -1,5 +1,5 @@
 .\"                                      Hey, EMACS: -*- nroff -*-
-.TH GIF2WEBP 1 "January 25, 2018"
+.TH GIF2WEBP 1 "January 25, 2017"
 .SH NAME
 gif2webp \- Convert a GIF image to WebP
 .SH SYNOPSIS
@@ -20,12 +20,6 @@ Specify the name of the output WebP file. If omitted, \fBgif2webp\fP will
 perform conversion but only report statistics.
 Using "\-" as output name will direct output to 'stdout'.
 .TP
-.BI \-\- " string
-Explicitly specify the input file. This option is useful if the input
-file starts with an '\-' for instance. This option must appear \fBlast\fP.
-Any other options afterward will be ignored. If the input file is "\-",
-the data will be read from \fIstdin\fP instead of a file.
-.TP
 .B \-h, \-help
 Usage information.
 .TP
@@ -116,10 +110,6 @@ the range of 20 to 50.
 .B \-mt
 Use multi-threading for encoding, if possible.
 .TP
-.B \-loop_compatibility
-If enabled, handle the loop information in a compatible fashion for Chrome
-version prior to M62 (inclusive) and Firefox.
-.TP
 .B \-v
 Print extra information.
 .TP
@@ -143,8 +133,6 @@ gif2webp \-lossy \-m 3 picture.gif \-o picture_lossy.webp
 gif2webp \-lossy \-f 50 picture.gif \-o picture.webp
 .br
 gif2webp \-q 70 \-o picture.webp \-\- \-\-\-picture.gif
-.br
-cat picture.gif | gif2webp \-o \- \-\- \- > output.webp
 
 .SH AUTHORS
 \fBgif2webp\fP is a part of libwebp and was written by the WebP team.

man/img2webp.1

@@ -1,13 +1,11 @@
 .\"                                      Hey, EMACS: -*- nroff -*-
-.TH IMG2WEBP 1 "April 3, 2018"
+.TH IMG2WEBP 1 "January 23, 2017"
 .SH NAME
 img2webp \- create animated WebP file from a sequence of input images.
 .SH SYNOPSIS
 .B img2webp
 [file_level_options] [files] [per_frame_options...]
 .br
-.B img2webp argument_file_name
-.br
 .SH DESCRIPTION
 This manual page documents the
 .B img2webp
@@ -15,9 +13,6 @@ command.
 .PP
 \fBimg2webp\fP compresses a sequence of images using the animated WebP format.
 Input images can either be PNG, JPEG, TIFF or WebP.
-If a single file name (not starting with the character '\-') is supplied as
-the argument, the command line argument are actually tokenized from this file.
-This allows for easy scripting or using large number of arguments.
 .SH FILE-LEVEL OPTIONS
 The file-level options are applied at the beginning of the compression process,
 before the input frames are read.
@@ -45,17 +40,14 @@ lossy or lossless compression for each frame heuristically. This global
 option disables the local option \fB-lossy\fP and \fB-lossless\fP .
 .TP
 .BI \-loop " int
-Specifies the number of times the animation should loop. Using '0'
-means 'loop indefinitely'.
+Specifies the number of times the animation should loop. Using '0' means
+'loop indefinitely'.
 .TP
 .BI \-v
 Be more verbose.
 .TP
 .B \-h, \-help
 A short usage summary.
-.TP
-.B \-version
-Print the version numbers of the relevant libraries used.
 
 .SH PER-FRAME OPTIONS
 The per-frame options are applied for the images following as arguments in the

man/vwebp.1

@@ -1,5 +1,5 @@
 .\"                                      Hey, EMACS: -*- nroff -*-
-.TH VWEBP 1 "June 5, 2019"
+.TH VWEBP 1 "November 25, 2016"
 .SH NAME
 vwebp \- decompress a WebP file and display it in a window
 .SH SYNOPSIS
@@ -38,10 +38,6 @@ It helps by smoothing gradients and avoiding banding artifacts. Default: 50.
 By default, quantized transparency planes are dithered during decompression,
 to smooth the gradients. This flag will prevent this dithering.
 .TP
-.B \-usebgcolor
-Fill transparent areas with the bitstream's own background color instead of
-checkerboard only. Default is white for non-animated images.
-.TP
 .B \-mt
 Use multi-threading for decoding, if possible.
 .TP
@@ -60,9 +56,6 @@ the data will be read from \fIstdin\fP instead of a file.
 .B 'c'
 Toggle use of color profile.
 .TP
-.B 'b'
-Toggle display of background color.
-.TP
 .B 'i'
 Overlay file information.
 .TP

man/webpinfo.1

@@ -1,5 +1,5 @@
 .\"                                      Hey, EMACS: -*- nroff -*-
-.TH WEBPINFO 1 "November 24, 2017"
+.TH WEBPINFO 1 "May 08, 2017"
 .SH NAME
 webpinfo \- print out the chunk level structure of WebP files
 along with basic integrity checks.
@@ -22,19 +22,16 @@ WebP format.
 
 .SH OPTIONS
 .TP
-.B \-version
-Print the version number (as major.minor.revision) and exit.
-.TP
-.B \-quiet
+.B -quiet
 Do not show chunk parsing information.
 .TP
-.B \-diag
+.B -diag
 Show parsing error diagnosis.
 .TP
-.B \-summary
+.B -summary
 Show chunk stats summary.
 .TP
-.BI \-bitstream_info
+.BI -bitstream_info
 Parse bitstream header.
 .TP
 .B \-h, \-help

man/webpmux.1

@@ -1,5 +1,5 @@
 .\"                                      Hey, EMACS: -*- nroff -*-
-.TH WEBPMUX 1 "April 23, 2018"
+.TH WEBPMUX 1 "November 10, 2016"
 .SH NAME
 webpmux \- create animated WebP files from non\-animated WebP images, extract
 frames from animated WebP images, and manage XMP/EXIF metadata and ICC profile.
@@ -48,8 +48,6 @@ frames from animated WebP images, and manage XMP/EXIF metadata and ICC profile.
 .B webpmux [\-h|\-help]
 .br
 .B webpmux \-version
-.br
-.B webpmux argument_file_name
 .SH DESCRIPTION
 This manual page documents the
 .B webpmux
@@ -57,9 +55,6 @@ command.
 .PP
 \fBwebpmux\fP can be used to create/extract from animated WebP files, as well as
 to add/extract/strip XMP/EXIF metadata and ICC profile.
-If a single file name (not starting with the character '\-') is supplied as
-the argument, the command line arguments are actually tokenized from this file.
-This allows for easy scripting or using large number of arguments.
 .SH OPTIONS
 .SS GET_OPTIONS (\-get):
 .TP

src/Makefile.am

@@ -1,10 +1,10 @@
 # The mux and demux libraries depend on libwebp, thus the '.' to force
 # the build order so it's available to them.
 SUBDIRS = dec enc dsp utils .
-if BUILD_MUX
+if WANT_MUX
   SUBDIRS += mux
 endif
-if BUILD_DEMUX
+if WANT_DEMUX
   SUBDIRS += demux
 endif
 
@@ -22,7 +22,6 @@ commondir = $(includedir)/webp
 libwebp_la_SOURCES =
 libwebpinclude_HEADERS =
 libwebpinclude_HEADERS += webp/encode.h
-
 noinst_HEADERS =
 noinst_HEADERS += webp/format_constants.h
 
@@ -36,7 +35,7 @@ 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 7:5:0
+libwebp_la_LDFLAGS = -no-undefined -version-info 7:0:0
 libwebpincludedir = $(includedir)/webp
 pkgconfig_DATA = libwebp.pc
 
@@ -48,7 +47,7 @@ if BUILD_LIBWEBPDECODER
   libwebpdecoder_la_LIBADD += dsp/libwebpdspdecode.la
   libwebpdecoder_la_LIBADD += utils/libwebputilsdecode.la
 
-  libwebpdecoder_la_LDFLAGS = -no-undefined -version-info 3:5:0
+  libwebpdecoder_la_LDFLAGS = -no-undefined -version-info 3:0:0
   pkgconfig_DATA += libwebpdecoder.pc
 endif
 

src/dec/Makefile.am

@@ -1,4 +1,3 @@
-AM_CPPFLAGS += -I$(top_builddir) -I$(top_srcdir)
 noinst_LTLIBRARIES = libwebpdecode.la
 
 libwebpdecode_la_SOURCES =
@@ -25,5 +24,5 @@ libwebpdecodeinclude_HEADERS += ../webp/types.h
 noinst_HEADERS =
 noinst_HEADERS += ../webp/format_constants.h
 
-libwebpdecode_la_CPPFLAGS = $(AM_CPPFLAGS)
+libwebpdecode_la_CPPFLAGS = $(AM_CPPFLAGS) $(USE_EXPERIMENTAL_CODE)
 libwebpdecodeincludedir = $(includedir)/webp

src/dec/alpha_dec.c

@@ -12,13 +12,13 @@
 // Author: Skal (pascal.massimino@gmail.com)
 
 #include <stdlib.h>
-#include "src/dec/alphai_dec.h"
-#include "src/dec/vp8i_dec.h"
-#include "src/dec/vp8li_dec.h"
-#include "src/dsp/dsp.h"
-#include "src/utils/quant_levels_dec_utils.h"
-#include "src/utils/utils.h"
-#include "src/webp/format_constants.h"
+#include "./alphai_dec.h"
+#include "./vp8i_dec.h"
+#include "./vp8li_dec.h"
+#include "../dsp/dsp.h"
+#include "../utils/quant_levels_dec_utils.h"
+#include "../utils/utils.h"
+#include "../webp/format_constants.h"
 
 //------------------------------------------------------------------------------
 // ALPHDecoder object.

src/dec/alphai_dec.h

@@ -11,11 +11,11 @@
 //
 // Author: Urvang (urvang@google.com)
 
-#ifndef WEBP_DEC_ALPHAI_DEC_H_
-#define WEBP_DEC_ALPHAI_DEC_H_
+#ifndef WEBP_DEC_ALPHAI_H_
+#define WEBP_DEC_ALPHAI_H_
 
-#include "src/dec/webpi_dec.h"
-#include "src/utils/filters_utils.h"
+#include "./webpi_dec.h"
+#include "../utils/filters_utils.h"
 
 #ifdef __cplusplus
 extern "C" {
@@ -51,4 +51,4 @@ void WebPDeallocateAlphaMemory(VP8Decoder* const dec);
 }    // extern "C"
 #endif
 
-#endif  // WEBP_DEC_ALPHAI_DEC_H_
+#endif  /* WEBP_DEC_ALPHAI_H_ */

src/dec/buffer_dec.c

@@ -13,15 +13,15 @@
 
 #include <stdlib.h>
 
-#include "src/dec/vp8i_dec.h"
-#include "src/dec/webpi_dec.h"
-#include "src/utils/utils.h"
+#include "./vp8i_dec.h"
+#include "./webpi_dec.h"
+#include "../utils/utils.h"
 
 //------------------------------------------------------------------------------
 // WebPDecBuffer
 
 // Number of bytes per pixel for the different color-spaces.
-static const uint8_t kModeBpp[MODE_LAST] = {
+static const int kModeBpp[MODE_LAST] = {
   3, 4, 3, 4, 4, 2, 2,
   4, 4, 4, 2,    // pre-multiplied modes
   1, 1 };
@@ -36,7 +36,7 @@ static int IsValidColorspace(int webp_csp_mode) {
 // 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))
+    (uint64_t)(STRIDE) * ((HEIGHT) - 1) + (WIDTH)
 
 static VP8StatusCode CheckDecBuffer(const WebPDecBuffer* const buffer) {
   int ok = 1;
@@ -74,8 +74,7 @@ static VP8StatusCode CheckDecBuffer(const WebPDecBuffer* const buffer) {
   } else {    // RGB checks
     const WebPRGBABuffer* const buf = &buffer->u.RGBA;
     const int stride = abs(buf->stride);
-    const uint64_t size =
-        MIN_BUFFER_SIZE(width * kModeBpp[mode], height, stride);
+    const uint64_t size = MIN_BUFFER_SIZE(width, height, stride);
     ok &= (size <= buf->size);
     ok &= (stride >= width * kModeBpp[mode]);
     ok &= (buf->rgba != NULL);
@@ -99,14 +98,9 @@ static VP8StatusCode AllocateBuffer(WebPDecBuffer* const buffer) {
     uint64_t uv_size = 0, a_size = 0, total_size;
     // We need memory and it hasn't been allocated yet.
     // => initialize output buffer, now that dimensions are known.
-    int stride;
-    uint64_t size;
+    const int stride = w * kModeBpp[mode];
+    const uint64_t size = (uint64_t)stride * h;
 
-    if ((uint64_t)w * kModeBpp[mode] >= (1ull << 32)) {
-      return VP8_STATUS_INVALID_PARAM;
-    }
-    stride = w * kModeBpp[mode];
-    size = (uint64_t)stride * h;
     if (!WebPIsRGBMode(mode)) {
       uv_stride = (w + 1) / 2;
       uv_size = (uint64_t)uv_stride * ((h + 1) / 2);
@@ -175,11 +169,11 @@ VP8StatusCode WebPFlipBuffer(WebPDecBuffer* const buffer) {
   return VP8_STATUS_OK;
 }
 
-VP8StatusCode WebPAllocateDecBuffer(int width, int height,
+VP8StatusCode WebPAllocateDecBuffer(int w, int h,
                                     const WebPDecoderOptions* const options,
-                                    WebPDecBuffer* const buffer) {
+                                    WebPDecBuffer* const out) {
   VP8StatusCode status;
-  if (buffer == NULL || width <= 0 || height <= 0) {
+  if (out == NULL || w <= 0 || h <= 0) {
     return VP8_STATUS_INVALID_PARAM;
   }
   if (options != NULL) {    // First, apply options if there is any.
@@ -188,39 +182,33 @@ VP8StatusCode WebPAllocateDecBuffer(int width, int height,
       const int ch = options->crop_height;
       const int x = options->crop_left & ~1;
       const int y = options->crop_top & ~1;
-      if (x < 0 || y < 0 || cw <= 0 || ch <= 0 ||
-          x + cw > width || y + ch > height) {
+      if (x < 0 || y < 0 || cw <= 0 || ch <= 0 || x + cw > w || y + ch > h) {
         return VP8_STATUS_INVALID_PARAM;   // out of frame boundary.
       }
-      width = cw;
-      height = ch;
+      w = cw;
+      h = ch;
     }
-
     if (options->use_scaling) {
-#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)) {
+              w, h, &scaled_width, &scaled_height)) {
         return VP8_STATUS_INVALID_PARAM;
       }
-      width = scaled_width;
-      height = scaled_height;
-#else
-      return VP8_STATUS_INVALID_PARAM;   // rescaling not supported
-#endif
+      w = scaled_width;
+      h = scaled_height;
     }
   }
-  buffer->width = width;
-  buffer->height = height;
+  out->width = w;
+  out->height = h;
 
   // Then, allocate buffer for real.
-  status = AllocateBuffer(buffer);
+  status = AllocateBuffer(out);
   if (status != VP8_STATUS_OK) return status;
 
   // Use the stride trick if vertical flip is needed.
   if (options != NULL && options->flip) {
-    status = WebPFlipBuffer(buffer);
+    status = WebPFlipBuffer(out);
   }
   return status;
 }

src/dec/common_dec.h

@@ -11,8 +11,8 @@
 //
 // Author: Skal (pascal.massimino@gmail.com)
 
-#ifndef WEBP_DEC_COMMON_DEC_H_
-#define WEBP_DEC_COMMON_DEC_H_
+#ifndef WEBP_DEC_COMMON_H_
+#define WEBP_DEC_COMMON_H_
 
 // intra prediction modes
 enum { B_DC_PRED = 0,   // 4x4 modes
@@ -51,4 +51,4 @@ enum { MB_FEATURE_TREE_PROBS = 3,
        NUM_PROBAS = 11
      };
 
-#endif  // WEBP_DEC_COMMON_DEC_H_
+#endif    // WEBP_DEC_COMMON_H_

src/dec/frame_dec.c

@@ -12,13 +12,13 @@
 // Author: Skal (pascal.massimino@gmail.com)
 
 #include <stdlib.h>
-#include "src/dec/vp8i_dec.h"
-#include "src/utils/utils.h"
+#include "./vp8i_dec.h"
+#include "../utils/utils.h"
 
 //------------------------------------------------------------------------------
 // Main reconstruction function.
 
-static const uint16_t kScan[16] = {
+static const int 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,
@@ -320,7 +320,7 @@ static void PrecomputeFilterStrengths(VP8Decoder* const dec) {
 #define MIN_DITHER_AMP 4
 
 #define DITHER_AMP_TAB_SIZE 12
-static const uint8_t kQuantToDitherAmp[DITHER_AMP_TAB_SIZE] = {
+static const int kQuantToDitherAmp[DITHER_AMP_TAB_SIZE] = {
   // roughly, it's dqm->uv_mat_[1]
   8, 7, 6, 4, 4, 2, 2, 2, 1, 1, 1, 1
 };
@@ -338,6 +338,7 @@ void VP8InitDithering(const WebPDecoderOptions* const options,
       for (s = 0; s < NUM_MB_SEGMENTS; ++s) {
         VP8QuantMatrix* const dqm = &dec->dqm_[s];
         if (dqm->uv_quant_ < DITHER_AMP_TAB_SIZE) {
+          // TODO(skal): should we specially dither more for uv_quant_ < 0?
           const int idx = (dqm->uv_quant_ < 0) ? 0 : dqm->uv_quant_;
           dqm->dither_ = (f * kQuantToDitherAmp[idx]) >> 3;
         }
@@ -399,9 +400,7 @@ static void DitherRow(VP8Decoder* const dec) {
 #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;
+static int FinishRow(VP8Decoder* const dec, VP8Io* const io) {
   int ok = 1;
   const VP8ThreadContext* const ctx = &dec->thread_ctx_;
   const int cache_id = ctx->id_;
@@ -449,9 +448,10 @@ static int FinishRow(void* arg1, void* arg2) {
     if (y_end > io->crop_bottom) {
       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.
     io->a = NULL;
     if (dec->alpha_data_ != NULL && y_start < y_end) {
+      // TODO(skal): testing presence of alpha with dec->alpha_data_ is not a
+      // good idea.
       io->a = VP8DecompressAlphaRows(dec, io, y_start, y_end - y_start);
       if (io->a == NULL) {
         return VP8SetError(dec, VP8_STATUS_BITSTREAM_ERROR,
@@ -558,6 +558,7 @@ VP8StatusCode VP8EnterCritical(VP8Decoder* const dec, VP8Io* const io) {
   if (io->bypass_filtering) {
     dec->filter_type_ = 0;
   }
+  // TODO(skal): filter type / strength / sharpness forcing
 
   // Define the area where we can skip in-loop filtering, in case of cropping.
   //
@@ -568,6 +569,8 @@ VP8StatusCode VP8EnterCritical(VP8Decoder* const dec, VP8Io* const io) {
   // Means: there's a dependency chain that goes all the way up to the
   // top-left corner of the picture (MB #0). We must filter all the previous
   // macroblocks.
+  // TODO(skal): add an 'approximate_decoding' option, that won't produce
+  // a 1:1 bit-exactness for complex filtering?
   {
     const int extra_pixels = kFilterExtraRows[dec->filter_type_];
     if (dec->filter_type_ == 2) {
@@ -648,7 +651,7 @@ static int InitThreadContext(VP8Decoder* const dec) {
     }
     worker->data1 = dec;
     worker->data2 = (void*)&dec->thread_ctx_.io_;
-    worker->hook = FinishRow;
+    worker->hook = (WebPWorkerHook)FinishRow;
     dec->num_caches_ =
       (dec->filter_type_ > 0) ? MT_CACHE_LINES : MT_CACHE_LINES - 1;
   } else {
@@ -668,9 +671,15 @@ int VP8GetThreadMethod(const WebPDecoderOptions* const options,
   (void)height;
   assert(headers == NULL || !headers->is_lossless);
 #if defined(WEBP_USE_THREAD)
-  if (width >= MIN_WIDTH_FOR_THREADS) return 2;
+  if (width < MIN_WIDTH_FOR_THREADS) return 0;
+  // TODO(skal): tune the heuristic further
+#if 0
+  if (height < 2 * width) return 2;
 #endif
+  return 2;
+#else   // !WEBP_USE_THREAD
   return 0;
+#endif
 }
 
 #undef MT_CACHE_LINES
@@ -719,7 +728,7 @@ static int AllocateMemory(VP8Decoder* const dec) {
   }
 
   mem = (uint8_t*)dec->mem_;
-  dec->intra_t_ = mem;
+  dec->intra_t_ = (uint8_t*)mem;
   mem += intra_pred_mode_size;
 
   dec->yuv_t_ = (VP8TopSamples*)mem;
@@ -741,7 +750,7 @@ static int AllocateMemory(VP8Decoder* const dec) {
 
   mem = (uint8_t*)WEBP_ALIGN(mem);
   assert((yuv_size & WEBP_ALIGN_CST) == 0);
-  dec->yuv_b_ = mem;
+  dec->yuv_b_ = (uint8_t*)mem;
   mem += yuv_size;
 
   dec->mb_data_ = (VP8MBData*)mem;
@@ -757,7 +766,7 @@ static int AllocateMemory(VP8Decoder* const dec) {
     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_y_ = ((uint8_t*)mem) + extra_y;
     dec->cache_u_ = dec->cache_y_
                   + 16 * num_caches * dec->cache_y_stride_ + extra_uv;
     dec->cache_v_ = dec->cache_u_
@@ -767,7 +776,7 @@ static int AllocateMemory(VP8Decoder* const dec) {
   mem += cache_size;
 
   // alpha plane
-  dec->alpha_plane_ = alpha_size ? mem : NULL;
+  dec->alpha_plane_ = alpha_size ? (uint8_t*)mem : NULL;
   mem += alpha_size;
   assert(mem <= (uint8_t*)dec->mem_ + dec->mem_size_);
 

src/dec/idec_dec.c

@@ -15,10 +15,10 @@
 #include <string.h>
 #include <stdlib.h>
 
-#include "src/dec/alphai_dec.h"
-#include "src/dec/webpi_dec.h"
-#include "src/dec/vp8i_dec.h"
-#include "src/utils/utils.h"
+#include "./alphai_dec.h"
+#include "./webpi_dec.h"
+#include "./vp8i_dec.h"
+#include "../utils/utils.h"
 
 // In append mode, buffer allocations increase as multiples of this value.
 // Needs to be a power of 2.
@@ -140,9 +140,10 @@ static void DoRemap(WebPIDecoder* const idec, ptrdiff_t offset) {
       if (NeedCompressedAlpha(idec)) {
         ALPHDecoder* const alph_dec = dec->alph_dec_;
         dec->alpha_data_ += offset;
-        if (alph_dec != NULL && alph_dec->vp8l_dec_ != NULL) {
+        if (alph_dec != NULL) {
           if (alph_dec->method_ == ALPHA_LOSSLESS_COMPRESSION) {
             VP8LDecoder* const alph_vp8l_dec = alph_dec->vp8l_dec_;
+            assert(alph_vp8l_dec != NULL);
             assert(dec->alpha_data_size_ >= ALPHA_HEADER_LEN);
             VP8LBitReaderSetBuffer(&alph_vp8l_dec->br_,
                                    dec->alpha_data_ + ALPHA_HEADER_LEN,
@@ -282,8 +283,10 @@ static void RestoreContext(const MBContext* context, VP8Decoder* const dec,
 
 static VP8StatusCode IDecError(WebPIDecoder* const idec, VP8StatusCode error) {
   if (idec->state_ == STATE_VP8_DATA) {
-    // Synchronize the thread, clean-up and check for errors.
-    VP8ExitCritical((VP8Decoder*)idec->dec_, &idec->io_);
+    VP8Io* const io = &idec->io_;
+    if (io->teardown != NULL) {
+      io->teardown(io);
+    }
   }
   idec->state_ = STATE_ERROR;
   return error;
@@ -448,10 +451,7 @@ static VP8StatusCode DecodeRemaining(WebPIDecoder* const idec) {
   VP8Decoder* const dec = (VP8Decoder*)idec->dec_;
   VP8Io* const io = &idec->io_;
 
-  // Make sure partition #0 has been read before, to set dec to ready_.
-  if (!dec->ready_) {
-    return IDecError(idec, VP8_STATUS_BITSTREAM_ERROR);
-  }
+  assert(dec->ready_);
   for (; dec->mb_y_ < dec->mb_h_; ++dec->mb_y_) {
     if (idec->last_mb_y_ != dec->mb_y_) {
       if (!VP8ParseIntraModeRow(&dec->br_, dec)) {
@@ -473,12 +473,6 @@ static VP8StatusCode DecodeRemaining(WebPIDecoder* const idec) {
             MemDataSize(&idec->mem_) > MAX_MB_SIZE) {
           return IDecError(idec, VP8_STATUS_BITSTREAM_ERROR);
         }
-        // Synchronize the threads.
-        if (dec->mt_method_ > 0) {
-          if (!WebPGetWorkerInterface()->Sync(&dec->worker_)) {
-            return IDecError(idec, VP8_STATUS_BITSTREAM_ERROR);
-          }
-        }
         RestoreContext(&context, dec, token_br);
         return VP8_STATUS_SUSPENDED;
       }
@@ -497,7 +491,6 @@ static VP8StatusCode DecodeRemaining(WebPIDecoder* const idec) {
   }
   // Synchronize the thread and check for errors.
   if (!VP8ExitCritical(dec, io)) {
-    idec->state_ = STATE_ERROR;  // prevent re-entry in IDecError
     return IDecError(idec, VP8_STATUS_USER_ABORT);
   }
   dec->ready_ = 0;
@@ -578,10 +571,6 @@ static VP8StatusCode IDecode(WebPIDecoder* idec) {
     status = DecodePartition0(idec);
   }
   if (idec->state_ == STATE_VP8_DATA) {
-    const VP8Decoder* const dec = (VP8Decoder*)idec->dec_;
-    if (dec == NULL) {
-      return VP8_STATUS_SUSPENDED;  // can't continue if we have no decoder.
-    }
     status = DecodeRemaining(idec);
   }
   if (idec->state_ == STATE_VP8L_HEADER) {
@@ -684,12 +673,12 @@ void WebPIDelete(WebPIDecoder* idec) {
 //------------------------------------------------------------------------------
 // Wrapper toward WebPINewDecoder
 
-WebPIDecoder* WebPINewRGB(WEBP_CSP_MODE csp, uint8_t* output_buffer,
+WebPIDecoder* WebPINewRGB(WEBP_CSP_MODE mode, uint8_t* output_buffer,
                           size_t output_buffer_size, int output_stride) {
   const int is_external_memory = (output_buffer != NULL) ? 1 : 0;
   WebPIDecoder* idec;
 
-  if (csp >= MODE_YUV) return NULL;
+  if (mode >= MODE_YUV) return NULL;
   if (is_external_memory == 0) {    // Overwrite parameters to sane values.
     output_buffer_size = 0;
     output_stride = 0;
@@ -700,7 +689,7 @@ WebPIDecoder* WebPINewRGB(WEBP_CSP_MODE csp, uint8_t* output_buffer,
   }
   idec = WebPINewDecoder(NULL);
   if (idec == NULL) return NULL;
-  idec->output_.colorspace = csp;
+  idec->output_.colorspace = mode;
   idec->output_.is_external_memory = is_external_memory;
   idec->output_.u.RGBA.rgba = output_buffer;
   idec->output_.u.RGBA.stride = output_stride;

src/dec/io_dec.c

@@ -13,11 +13,11 @@
 
 #include <assert.h>
 #include <stdlib.h>
-#include "src/dec/vp8i_dec.h"
-#include "src/dec/webpi_dec.h"
-#include "src/dsp/dsp.h"
-#include "src/dsp/yuv.h"
-#include "src/utils/utils.h"
+#include "../dec/vp8i_dec.h"
+#include "./webpi_dec.h"
+#include "../dsp/dsp.h"
+#include "../dsp/yuv.h"
+#include "../utils/utils.h"
 
 //------------------------------------------------------------------------------
 // Main YUV<->RGB conversion functions
@@ -212,7 +212,7 @@ static int EmitAlphaRGBA4444(const VP8Io* const io, WebPDecParams* const p,
     int num_rows;
     const int start_y = GetAlphaSourceRow(io, &alpha, &num_rows);
     uint8_t* const base_rgba = buf->rgba + start_y * buf->stride;
-#if (WEBP_SWAP_16BIT_CSP == 1)
+#ifdef WEBP_SWAP_16BIT_CSP
     uint8_t* alpha_dst = base_rgba;
 #else
     uint8_t* alpha_dst = base_rgba + 1;
@@ -241,7 +241,6 @@ 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) {
   int num_lines_out = 0;
@@ -432,7 +431,7 @@ 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 + y_pos * buf->stride;
-#if (WEBP_SWAP_16BIT_CSP == 1)
+#ifdef WEBP_SWAP_16BIT_CSP
   uint8_t* alpha_dst = base_rgba;
 #else
   uint8_t* alpha_dst = base_rgba + 1;
@@ -542,8 +541,6 @@ static int InitRGBRescaler(const VP8Io* const io, WebPDecParams* const p) {
   return 1;
 }
 
-#endif  // WEBP_REDUCE_SIZE
-
 //------------------------------------------------------------------------------
 // Default custom functions
 
@@ -564,14 +561,10 @@ static int CustomSetup(VP8Io* io) {
     WebPInitUpsamplers();
   }
   if (io->use_scaling) {
-#if !defined(WEBP_REDUCE_SIZE)
     const int ok = is_rgb ? InitRGBRescaler(io, p) : InitYUVRescaler(io, p);
     if (!ok) {
       return 0;    // memory error
     }
-#else
-    return 0;   // rescaling support not compiled
-#endif
   } else {
     if (is_rgb) {
       WebPInitSamplers();
@@ -605,6 +598,9 @@ static int CustomSetup(VP8Io* io) {
     }
   }
 
+  if (is_rgb) {
+    VP8YUVInit();
+  }
   return 1;
 }
 

src/dec/quant_dec.c

@@ -11,7 +11,7 @@
 //
 // Author: Skal (pascal.massimino@gmail.com)
 
-#include "src/dec/vp8i_dec.h"
+#include "./vp8i_dec.h"
 
 static WEBP_INLINE int clip(int v, int M) {
   return v < 0 ? 0 : v > M ? M : v;
@@ -61,17 +61,12 @@ static const uint16_t kAcTable[128] = {
 
 void VP8ParseQuant(VP8Decoder* const dec) {
   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 base_q0 = VP8GetValue(br, 7);
+  const int dqy1_dc = VP8Get(br) ? VP8GetSignedValue(br, 4) : 0;
+  const int dqy2_dc = VP8Get(br) ? VP8GetSignedValue(br, 4) : 0;
+  const int dqy2_ac = VP8Get(br) ? VP8GetSignedValue(br, 4) : 0;
+  const int dquv_dc = VP8Get(br) ? VP8GetSignedValue(br, 4) : 0;
+  const int dquv_ac = VP8Get(br) ? VP8GetSignedValue(br, 4) : 0;
 
   const VP8SegmentHeader* const hdr = &dec->segment_hdr_;
   int i;

src/dec/tree_dec.c

@@ -11,19 +11,15 @@
 //
 // Author: Skal (pascal.massimino@gmail.com)
 
-#include "src/dec/vp8i_dec.h"
-#include "src/utils/bit_reader_inl_utils.h"
+#include "./vp8i_dec.h"
+#include "../utils/bit_reader_inl_utils.h"
 
-#if !defined(USE_GENERIC_TREE)
 #if !defined(__arm__) && !defined(_M_ARM) && !defined(__aarch64__)
 // using a table is ~1-2% slower on ARM. Prefer the coded-tree approach then.
-#define USE_GENERIC_TREE 1   // ALTERNATE_CODE
-#else
-#define USE_GENERIC_TREE 0
+#define USE_GENERIC_TREE
 #endif
-#endif  // USE_GENERIC_TREE
 
-#if (USE_GENERIC_TREE == 1)
+#ifdef USE_GENERIC_TREE
 static const int8_t kYModesIntra4[18] = {
   -B_DC_PRED, 1,
     -B_TM_PRED, 2,
@@ -296,21 +292,20 @@ static void ParseIntraMode(VP8BitReader* const br,
   // to decode more than 1 keyframe.
   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])
+                    ? VP8GetBit(br, dec->proba_.segments_[1])
+                    : 2 + VP8GetBit(br, dec->proba_.segments_[2]);
   } else {
     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_);
 
-  block->is_i4x4_ = !VP8GetBit(br, 145, "block-size");
+  block->is_i4x4_ = !VP8GetBit(br, 145);   // decide for B_PRED first
   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);
+        VP8GetBit(br, 156) ? (VP8GetBit(br, 128) ? TM_PRED : H_PRED)
+                           : (VP8GetBit(br, 163) ? V_PRED : DC_PRED);
     block->imodes_[0] = ymode;
     memset(top, ymode, 4 * sizeof(*top));
     memset(left, ymode, 4 * sizeof(*left));
@@ -322,28 +317,25 @@ static void ParseIntraMode(VP8BitReader* const br,
       int x;
       for (x = 0; x < 4; ++x) {
         const uint8_t* const prob = kBModesProba[top[x]][ymode];
-#if (USE_GENERIC_TREE == 1)
+#ifdef USE_GENERIC_TREE
         // Generic tree-parsing
-        int i = kYModesIntra4[VP8GetBit(br, prob[0], "pred-modes")];
+        int i = kYModesIntra4[VP8GetBit(br, prob[0])];
         while (i > 0) {
-          i = kYModesIntra4[2 * i + VP8GetBit(br, prob[i], "pred-modes")];
+          i = kYModesIntra4[2 * i + VP8GetBit(br, prob[i])];
         }
         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))
-                        );
-#endif  // USE_GENERIC_TREE
+        ymode = !VP8GetBit(br, prob[0]) ? B_DC_PRED :
+                  !VP8GetBit(br, prob[1]) ? B_TM_PRED :
+                    !VP8GetBit(br, prob[2]) ? B_VE_PRED :
+                      !VP8GetBit(br, prob[3]) ?
+                        (!VP8GetBit(br, prob[4]) ? B_HE_PRED :
+                          (!VP8GetBit(br, prob[5]) ? B_RD_PRED : B_VR_PRED)) :
+                        (!VP8GetBit(br, prob[6]) ? B_LD_PRED :
+                          (!VP8GetBit(br, prob[7]) ? B_VL_PRED :
+                            (!VP8GetBit(br, prob[8]) ? B_HD_PRED : B_HU_PRED)));
+#endif    // USE_GENERIC_TREE
         top[x] = ymode;
       }
       memcpy(modes, top, 4 * sizeof(*top));
@@ -352,9 +344,9 @@ static void ParseIntraMode(VP8BitReader* const br,
     }
   }
   // 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) ? DC_PRED
+                 : !VP8GetBit(br, 114) ? V_PRED
+                 : VP8GetBit(br, 183) ? TM_PRED : H_PRED;
 }
 
 int VP8ParseIntraModeRow(VP8BitReader* const br, VP8Decoder* const dec) {
@@ -506,7 +498,7 @@ static const uint8_t
 
 // Paragraph 9.9
 
-static const uint8_t kBands[16 + 1] = {
+static const int kBands[16 + 1] = {
   0, 1, 2, 3, 6, 4, 5, 6, 6, 6, 6, 6, 6, 6, 6, 7,
   0  // extra entry as sentinel
 };
@@ -518,10 +510,8 @@ void VP8ParseProba(VP8BitReader* const br, VP8Decoder* const dec) {
     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];
+          const int v = VP8GetBit(br, CoeffsUpdateProba[t][b][c][p]) ?
+                        VP8GetValue(br, 8) : CoeffsProba0[t][b][c][p];
           proba->bands_[t][b].probas_[c][p] = v;
         }
       }
@@ -530,8 +520,9 @@ void VP8ParseProba(VP8BitReader* const br, VP8Decoder* const dec) {
       proba->bands_ptr_[t][b] = &proba->bands_[t][kBands[b]];
     }
   }
-  dec->use_skip_proba_ = VP8Get(br, "global-header");
+  dec->use_skip_proba_ = VP8Get(br);
   if (dec->use_skip_proba_) {
-    dec->skip_p_ = VP8GetValue(br, 8, "global-header");
+    dec->skip_p_ = VP8GetValue(br, 8);
   }
 }
+

src/dec/vp8_dec.c

@@ -13,12 +13,12 @@
 
 #include <stdlib.h>
 
-#include "src/dec/alphai_dec.h"
-#include "src/dec/vp8i_dec.h"
-#include "src/dec/vp8li_dec.h"
-#include "src/dec/webpi_dec.h"
-#include "src/utils/bit_reader_inl_utils.h"
-#include "src/utils/utils.h"
+#include "./alphai_dec.h"
+#include "./vp8i_dec.h"
+#include "./vp8li_dec.h"
+#include "./webpi_dec.h"
+#include "../utils/bit_reader_inl_utils.h"
+#include "../utils/utils.h"
 
 //------------------------------------------------------------------------------
 
@@ -161,26 +161,23 @@ static int ParseSegmentHeader(VP8BitReader* br,
                               VP8SegmentHeader* hdr, VP8Proba* proba) {
   assert(br != NULL);
   assert(hdr != NULL);
-  hdr->use_segment_ = VP8Get(br, "global-header");
+  hdr->use_segment_ = VP8Get(br);
   if (hdr->use_segment_) {
-    hdr->update_map_ = VP8Get(br, "global-header");
-    if (VP8Get(br, "global-header")) {   // update data
+    hdr->update_map_ = VP8Get(br);
+    if (VP8Get(br)) {   // update data
       int s;
-      hdr->absolute_delta_ = VP8Get(br, "global-header");
+      hdr->absolute_delta_ = VP8Get(br);
       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) ? VP8GetSignedValue(br, 7) : 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) ? VP8GetSignedValue(br, 6) : 0;
       }
     }
     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) ? VP8GetValue(br, 8) : 255u;
       }
     }
   } else {
@@ -208,7 +205,7 @@ static VP8StatusCode ParsePartitions(VP8Decoder* const dec,
   size_t last_part;
   size_t p;
 
-  dec->num_parts_minus_one_ = (1 << VP8GetValue(br, 2, "global-header")) - 1;
+  dec->num_parts_minus_one_ = (1 << VP8GetValue(br, 2)) - 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.
@@ -232,21 +229,21 @@ static VP8StatusCode ParsePartitions(VP8Decoder* const dec,
 // 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");
+  hdr->simple_    = VP8Get(br);
+  hdr->level_     = VP8GetValue(br, 6);
+  hdr->sharpness_ = VP8GetValue(br, 3);
+  hdr->use_lf_delta_ = VP8Get(br);
   if (hdr->use_lf_delta_) {
-    if (VP8Get(br, "global-header")) {   // update lf-delta?
+    if (VP8Get(br)) {   // 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");
+        if (VP8Get(br)) {
+          hdr->ref_lf_delta_[i] = VP8GetSignedValue(br, 6);
         }
       }
       for (i = 0; i < NUM_MODE_LF_DELTAS; ++i) {
-        if (VP8Get(br, "global-header")) {
-          hdr->mode_lf_delta_[i] = VP8GetSignedValue(br, 6, "global-header");
+        if (VP8Get(br)) {
+          hdr->mode_lf_delta_[i] = VP8GetSignedValue(br, 6);
         }
       }
     }
@@ -355,8 +352,8 @@ int VP8GetHeaders(VP8Decoder* const dec, VP8Io* const io) {
   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");
+    pic_hdr->colorspace_ = VP8Get(br);
+    pic_hdr->clamp_type_ = VP8Get(br);
   }
   if (!ParseSegmentHeader(br, &dec->segment_hdr_, &dec->proba_)) {
     return VP8SetError(dec, VP8_STATUS_BITSTREAM_ERROR,
@@ -381,7 +378,7 @@ int VP8GetHeaders(VP8Decoder* const dec, VP8Io* const io) {
                        "Not a key frame.");
   }
 
-  VP8Get(br, "global-header");   // ignore the value of update_proba_
+  VP8Get(br);   // ignore the value of update_proba_
 
   VP8ParseProba(br, dec);
 
@@ -406,28 +403,28 @@ static const uint8_t kZigzag[16] = {
 // See section 13-2: http://tools.ietf.org/html/rfc6386#section-13.2
 static int GetLargeValue(VP8BitReader* const br, const uint8_t* const p) {
   int v;
-  if (!VP8GetBit(br, p[3], "coeffs")) {
-    if (!VP8GetBit(br, p[4], "coeffs")) {
+  if (!VP8GetBit(br, p[3])) {
+    if (!VP8GetBit(br, p[4])) {
       v = 2;
     } else {
-      v = 3 + VP8GetBit(br, p[5], "coeffs");
+      v = 3 + VP8GetBit(br, p[5]);
     }
   } else {
-    if (!VP8GetBit(br, p[6], "coeffs")) {
-      if (!VP8GetBit(br, p[7], "coeffs")) {
-        v = 5 + VP8GetBit(br, 159, "coeffs");
+    if (!VP8GetBit(br, p[6])) {
+      if (!VP8GetBit(br, p[7])) {
+        v = 5 + VP8GetBit(br, 159);
       } else {
-        v = 7 + 2 * VP8GetBit(br, 165, "coeffs");
-        v += VP8GetBit(br, 145, "coeffs");
+        v = 7 + 2 * VP8GetBit(br, 165);
+        v += VP8GetBit(br, 145);
       }
     } else {
       const uint8_t* tab;
-      const int bit1 = VP8GetBit(br, p[8], "coeffs");
-      const int bit0 = VP8GetBit(br, p[9 + bit1], "coeffs");
+      const int bit1 = VP8GetBit(br, p[8]);
+      const int bit0 = VP8GetBit(br, p[9 + bit1]);
       const int cat = 2 * bit1 + bit0;
       v = 0;
       for (tab = kCat3456[cat]; *tab; ++tab) {
-        v += v + VP8GetBit(br, *tab, "coeffs");
+        v += v + VP8GetBit(br, *tab);
       }
       v += 3 + (8 << cat);
     }
@@ -441,24 +438,24 @@ static int GetCoeffsFast(VP8BitReader* const br,
                          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")) {
+    if (!VP8GetBit(br, p[0])) {
       return n;  // previous coeff was last non-zero coeff
     }
-    while (!VP8GetBit(br, p[1], "coeffs")) {       // sequence of zero coeffs
+    while (!VP8GetBit(br, p[1])) {       // 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];
       int v;
-      if (!VP8GetBit(br, p[2], "coeffs")) {
+      if (!VP8GetBit(br, p[2])) {
         v = 1;
         p = p_ctx[1];
       } else {
         v = GetLargeValue(br, p);
         p = p_ctx[2];
       }
-      out[kZigzag[n]] = VP8GetSigned(br, v, "coeffs") * dq[n > 0];
+      out[kZigzag[n]] = VP8GetSigned(br, v) * dq[n > 0];
     }
   }
   return 16;
@@ -471,30 +468,30 @@ static int GetCoeffsAlt(VP8BitReader* const br,
                         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")) {
+    if (!VP8GetBitAlt(br, p[0])) {
       return n;  // previous coeff was last non-zero coeff
     }
-    while (!VP8GetBitAlt(br, p[1], "coeffs")) {       // sequence of zero coeffs
+    while (!VP8GetBitAlt(br, p[1])) {       // 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];
       int v;
-      if (!VP8GetBitAlt(br, p[2], "coeffs")) {
+      if (!VP8GetBitAlt(br, p[2])) {
         v = 1;
         p = p_ctx[1];
       } else {
         v = GetLargeValue(br, p);
         p = p_ctx[2];
       }
-      out[kZigzag[n]] = VP8GetSigned(br, v, "coeffs") * dq[n > 0];
+      out[kZigzag[n]] = VP8GetSigned(br, v) * dq[n > 0];
     }
   }
   return 16;
 }
 
-static WEBP_TSAN_IGNORE_FUNCTION void InitGetCoeffs(void) {
+WEBP_TSAN_IGNORE_FUNCTION static void InitGetCoeffs(void) {
   if (GetCoeffs == NULL) {
     if (VP8GetCPUInfo != NULL && VP8GetCPUInfo(kSlowSSSE3)) {
       GetCoeffs = GetCoeffsAlt;

src/dec/vp8_dec.h

@@ -11,10 +11,10 @@
 //
 // Author: Skal (pascal.massimino@gmail.com)
 
-#ifndef WEBP_DEC_VP8_DEC_H_
-#define WEBP_DEC_VP8_DEC_H_
+#ifndef WEBP_WEBP_DECODE_VP8_H_
+#define WEBP_WEBP_DECODE_VP8_H_
 
-#include "src/webp/decode.h"
+#include "../webp/decode.h"
 
 #ifdef __cplusplus
 extern "C" {
@@ -157,24 +157,24 @@ 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 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(
+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
     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 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(
+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);
 
@@ -182,4 +182,4 @@ WEBP_EXTERN int VP8LGetInfo(
 }    // extern "C"
 #endif
 
-#endif  // WEBP_DEC_VP8_DEC_H_
+#endif  /* WEBP_WEBP_DECODE_VP8_H_ */

src/dec/vp8i_dec.h

@@ -11,16 +11,16 @@
 //
 // Author: Skal (pascal.massimino@gmail.com)
 
-#ifndef WEBP_DEC_VP8I_DEC_H_
-#define WEBP_DEC_VP8I_DEC_H_
+#ifndef WEBP_DEC_VP8I_H_
+#define WEBP_DEC_VP8I_H_
 
 #include <string.h>     // for memcpy()
-#include "src/dec/common_dec.h"
-#include "src/dec/vp8li_dec.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 "./common_dec.h"
+#include "./vp8li_dec.h"
+#include "../utils/bit_reader_utils.h"
+#include "../utils/random_utils.h"
+#include "../utils/thread_utils.h"
+#include "../dsp/dsp.h"
 
 #ifdef __cplusplus
 extern "C" {
@@ -30,9 +30,9 @@ extern "C" {
 // Various defines and enums
 
 // version numbers
-#define DEC_MAJ_VERSION 1
-#define DEC_MIN_VERSION 0
-#define DEC_REV_VERSION 3
+#define DEC_MAJ_VERSION 0
+#define DEC_MIN_VERSION 6
+#define DEC_REV_VERSION 0
 
 // YUV-cache parameters. Cache is 32-bytes wide (= one cacheline).
 // Constraints are: We need to store one 16x16 block of luma samples (y),
@@ -57,6 +57,7 @@ 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_SIZE   (BPS * 17)
 #define Y_OFF    (BPS * 1 + 8)
 #define U_OFF    (Y_OFF + BPS * 16 + BPS)
 #define V_OFF    (U_OFF + 16)
@@ -316,4 +317,4 @@ const uint8_t* VP8DecompressAlphaRows(VP8Decoder* const dec,
 }    // extern "C"
 #endif
 
-#endif  // WEBP_DEC_VP8I_DEC_H_
+#endif  /* WEBP_DEC_VP8I_H_ */

src/dec/vp8l_dec.c

@@ -14,22 +14,22 @@
 
 #include <stdlib.h>
 
-#include "src/dec/alphai_dec.h"
-#include "src/dec/vp8li_dec.h"
-#include "src/dsp/dsp.h"
-#include "src/dsp/lossless.h"
-#include "src/dsp/lossless_common.h"
-#include "src/dsp/yuv.h"
-#include "src/utils/endian_inl_utils.h"
-#include "src/utils/huffman_utils.h"
-#include "src/utils/utils.h"
+#include "./alphai_dec.h"
+#include "./vp8li_dec.h"
+#include "../dsp/dsp.h"
+#include "../dsp/lossless.h"
+#include "../dsp/lossless_common.h"
+#include "../dsp/yuv.h"
+#include "../utils/endian_inl_utils.h"
+#include "../utils/huffman_utils.h"
+#include "../utils/utils.h"
 
 #define NUM_ARGB_CACHE_ROWS          16
 
 static const int kCodeLengthLiterals = 16;
 static const int kCodeLengthRepeatCode = 16;
-static const uint8_t kCodeLengthExtraBits[3] = { 2, 3, 7 };
-static const uint8_t kCodeLengthRepeatOffsets[3] = { 3, 3, 11 };
+static const int kCodeLengthExtraBits[3] = { 2, 3, 7 };
+static const int kCodeLengthRepeatOffsets[3] = { 3, 3, 11 };
 
 // -----------------------------------------------------------------------------
 //  Five Huffman codes are used at each meta code:
@@ -86,7 +86,7 @@ static const uint8_t kCodeToPlane[CODE_TO_PLANE_CODES] = {
 // All values computed for 8-bit first level lookup with Mark Adler's tool:
 // http://www.hdfgroup.org/ftp/lib-external/zlib/zlib-1.2.5/examples/enough.c
 #define FIXED_TABLE_SIZE (630 * 3 + 410)
-static const uint16_t kTableSize[12] = {
+static const int kTableSize[12] = {
   FIXED_TABLE_SIZE + 654,
   FIXED_TABLE_SIZE + 656,
   FIXED_TABLE_SIZE + 658,
@@ -253,11 +253,11 @@ static int ReadHuffmanCodeLengths(
   int symbol;
   int max_symbol;
   int prev_code_len = DEFAULT_CODE_LENGTH;
-  HuffmanTables tables;
+  HuffmanCode table[1 << LENGTHS_TABLE_BITS];
 
-  if (!VP8LHuffmanTablesAllocate(1 << LENGTHS_TABLE_BITS, &tables) ||
-      !VP8LBuildHuffmanTable(&tables, LENGTHS_TABLE_BITS,
-                             code_length_code_lengths, NUM_CODE_LENGTH_CODES)) {
+  if (!VP8LBuildHuffmanTable(table, LENGTHS_TABLE_BITS,
+                             code_length_code_lengths,
+                             NUM_CODE_LENGTH_CODES)) {
     goto End;
   }
 
@@ -277,7 +277,7 @@ static int ReadHuffmanCodeLengths(
     int code_len;
     if (max_symbol-- == 0) break;
     VP8LFillBitWindow(br);
-    p = &tables.curr_segment->start[VP8LPrefetchBits(br) & LENGTHS_TABLE_MASK];
+    p = &table[VP8LPrefetchBits(br) & LENGTHS_TABLE_MASK];
     VP8LSetBitPos(br, br->bit_pos_ + p->bits);
     code_len = p->value;
     if (code_len < kCodeLengthLiterals) {
@@ -300,7 +300,6 @@ static int ReadHuffmanCodeLengths(
   ok = 1;
 
  End:
-  VP8LHuffmanTablesDeallocate(&tables);
   if (!ok) dec->status_ = VP8_STATUS_BITSTREAM_ERROR;
   return ok;
 }
@@ -308,8 +307,7 @@ static int ReadHuffmanCodeLengths(
 // 'code_lengths' is pre-allocated temporary buffer, used for creating Huffman
 // tree.
 static int ReadHuffmanCode(int alphabet_size, VP8LDecoder* const dec,
-                           int* const code_lengths,
-                           HuffmanTables* const table) {
+                           int* const code_lengths, HuffmanCode* const table) {
   int ok = 0;
   int size = 0;
   VP8LBitReader* const br = &dec->br_;
@@ -364,18 +362,12 @@ static int ReadHuffmanCodes(VP8LDecoder* const dec, int xsize, int ysize,
   VP8LMetadata* const hdr = &dec->hdr_;
   uint32_t* huffman_image = NULL;
   HTreeGroup* htree_groups = NULL;
-  HuffmanTables* huffman_tables = &hdr->huffman_tables_;
+  HuffmanCode* huffman_tables = NULL;
+  HuffmanCode* next = NULL;
   int num_htree_groups = 1;
-  int num_htree_groups_max = 1;
   int max_alphabet_size = 0;
   int* code_lengths = NULL;
   const int table_size = kTableSize[color_cache_bits];
-  int* mapping = NULL;
-  int ok = 0;
-
-  // Check the table has been 0 initialized (through InitMetadata).
-  assert(huffman_tables->root.start == NULL);
-  assert(huffman_tables->curr_segment == NULL);
 
   if (allow_recursion && VP8LReadBits(br, 1)) {
     // use meta Huffman codes.
@@ -392,36 +384,10 @@ static int ReadHuffmanCodes(VP8LDecoder* const dec, int xsize, int ysize,
       // The huffman data is stored in red and green bytes.
       const int group = (huffman_image[i] >> 8) & 0xffff;
       huffman_image[i] = group;
-      if (group >= num_htree_groups_max) {
-        num_htree_groups_max = group + 1;
+      if (group >= num_htree_groups) {
+        num_htree_groups = group + 1;
       }
     }
-    // Check the validity of num_htree_groups_max. If it seems too big, use a
-    // smaller value for later. This will prevent big memory allocations to end
-    // up with a bad bitstream anyway.
-    // The value of 1000 is totally arbitrary. We know that num_htree_groups_max
-    // is smaller than (1 << 16) and should be smaller than the number of pixels
-    // (though the format allows it to be bigger).
-    if (num_htree_groups_max > 1000 || num_htree_groups_max > xsize * ysize) {
-      // Create a mapping from the used indices to the minimal set of used
-      // values [0, num_htree_groups)
-      mapping = (int*)WebPSafeMalloc(num_htree_groups_max, sizeof(*mapping));
-      if (mapping == NULL) {
-        dec->status_ = VP8_STATUS_OUT_OF_MEMORY;
-        goto Error;
-      }
-      // -1 means a value is unmapped, and therefore unused in the Huffman
-      // image.
-      memset(mapping, 0xff, num_htree_groups_max * sizeof(*mapping));
-      for (num_htree_groups = 0, i = 0; i < huffman_pixs; ++i) {
-        // Get the current mapping for the group and remap the Huffman image.
-        int* const mapped_group = &mapping[huffman_image[i]];
-        if (*mapped_group == -1) *mapped_group = num_htree_groups++;
-        huffman_image[i] = *mapped_group;
-      }
-    } else {
-      num_htree_groups = num_htree_groups_max;
-    }
   }
 
   if (br->eos_) goto Error;
@@ -437,105 +403,88 @@ static int ReadHuffmanCodes(VP8LDecoder* const dec, int xsize, int ysize,
     }
   }
 
+  huffman_tables = (HuffmanCode*)WebPSafeMalloc(num_htree_groups * table_size,
+                                                sizeof(*huffman_tables));
+  htree_groups = VP8LHtreeGroupsNew(num_htree_groups);
   code_lengths = (int*)WebPSafeCalloc((uint64_t)max_alphabet_size,
                                       sizeof(*code_lengths));
-  htree_groups = VP8LHtreeGroupsNew(num_htree_groups);
 
-  if (htree_groups == NULL || code_lengths == NULL ||
-      !VP8LHuffmanTablesAllocate(num_htree_groups * table_size,
-                                 huffman_tables)) {
+  if (htree_groups == NULL || code_lengths == NULL || huffman_tables == NULL) {
     dec->status_ = VP8_STATUS_OUT_OF_MEMORY;
     goto Error;
   }
 
-  for (i = 0; i < num_htree_groups_max; ++i) {
-    // If the index "i" is unused in the Huffman image, just make sure the
-    // coefficients are valid but do not store them.
-    if (mapping != NULL && mapping[i] == -1) {
-      for (j = 0; j < HUFFMAN_CODES_PER_META_CODE; ++j) {
-        int alphabet_size = kAlphabetSize[j];
-        if (j == 0 && color_cache_bits > 0) {
-          alphabet_size += (1 << color_cache_bits);
-        }
-        // Passing in NULL so that nothing gets filled.
-        if (!ReadHuffmanCode(alphabet_size, dec, code_lengths, NULL)) {
-          goto Error;
-        }
+  next = huffman_tables;
+  for (i = 0; i < num_htree_groups; ++i) {
+    HTreeGroup* const htree_group = &htree_groups[i];
+    HuffmanCode** const htrees = htree_group->htrees;
+    int size;
+    int total_size = 0;
+    int is_trivial_literal = 1;
+    int max_bits = 0;
+    for (j = 0; j < HUFFMAN_CODES_PER_META_CODE; ++j) {
+      int alphabet_size = kAlphabetSize[j];
+      htrees[j] = next;
+      if (j == 0 && color_cache_bits > 0) {
+        alphabet_size += 1 << color_cache_bits;
       }
-    } else {
-      HTreeGroup* const htree_group =
-          &htree_groups[(mapping == NULL) ? i : mapping[i]];
-      HuffmanCode** const htrees = htree_group->htrees;
-      int size;
-      int total_size = 0;
-      int is_trivial_literal = 1;
-      int max_bits = 0;
-      for (j = 0; j < HUFFMAN_CODES_PER_META_CODE; ++j) {
-        int alphabet_size = kAlphabetSize[j];
-        if (j == 0 && color_cache_bits > 0) {
-          alphabet_size += (1 << color_cache_bits);
-        }
-        size =
-            ReadHuffmanCode(alphabet_size, dec, code_lengths, huffman_tables);
-        htrees[j] = huffman_tables->curr_segment->curr_table;
-        if (size == 0) {
-          goto Error;
-        }
-        if (is_trivial_literal && kLiteralMap[j] == 1) {
-          is_trivial_literal = (htrees[j]->bits == 0);
-        }
-        total_size += htrees[j]->bits;
-        huffman_tables->curr_segment->curr_table += size;
-        if (j <= ALPHA) {
-          int local_max_bits = code_lengths[0];
-          int k;
-          for (k = 1; k < alphabet_size; ++k) {
-            if (code_lengths[k] > local_max_bits) {
-              local_max_bits = code_lengths[k];
-            }
+      size = ReadHuffmanCode(alphabet_size, dec, code_lengths, next);
+      if (size == 0) {
+        goto Error;
+      }
+      if (is_trivial_literal && kLiteralMap[j] == 1) {
+        is_trivial_literal = (next->bits == 0);
+      }
+      total_size += next->bits;
+      next += size;
+      if (j <= ALPHA) {
+        int local_max_bits = code_lengths[0];
+        int k;
+        for (k = 1; k < alphabet_size; ++k) {
+          if (code_lengths[k] > local_max_bits) {
+            local_max_bits = code_lengths[k];
           }
-          max_bits += local_max_bits;
         }
+        max_bits += local_max_bits;
       }
-      htree_group->is_trivial_literal = is_trivial_literal;
-      htree_group->is_trivial_code = 0;
-      if (is_trivial_literal) {
-        const int red = htrees[RED][0].value;
-        const int blue = htrees[BLUE][0].value;
-        const int alpha = htrees[ALPHA][0].value;
-        htree_group->literal_arb = ((uint32_t)alpha << 24) | (red << 16) | blue;
-        if (total_size == 0 && htrees[GREEN][0].value < NUM_LITERAL_CODES) {
-          htree_group->is_trivial_code = 1;
-          htree_group->literal_arb |= htrees[GREEN][0].value << 8;
-        }
-      }
-      htree_group->use_packed_table =
-          !htree_group->is_trivial_code && (max_bits < HUFFMAN_PACKED_BITS);
-      if (htree_group->use_packed_table) BuildPackedTable(htree_group);
     }
+    htree_group->is_trivial_literal = is_trivial_literal;
+    htree_group->is_trivial_code = 0;
+    if (is_trivial_literal) {
+      const int red = htrees[RED][0].value;
+      const int blue = htrees[BLUE][0].value;
+      const int alpha = htrees[ALPHA][0].value;
+      htree_group->literal_arb =
+          ((uint32_t)alpha << 24) | (red << 16) | blue;
+      if (total_size == 0 && htrees[GREEN][0].value < NUM_LITERAL_CODES) {
+        htree_group->is_trivial_code = 1;
+        htree_group->literal_arb |= htrees[GREEN][0].value << 8;
+      }
+    }
+    htree_group->use_packed_table = !htree_group->is_trivial_code &&
+                                    (max_bits < HUFFMAN_PACKED_BITS);
+    if (htree_group->use_packed_table) BuildPackedTable(htree_group);
   }
-  ok = 1;
+  WebPSafeFree(code_lengths);
 
-  // All OK. Finalize pointers.
+  // All OK. Finalize pointers and return.
   hdr->huffman_image_ = huffman_image;
   hdr->num_htree_groups_ = num_htree_groups;
   hdr->htree_groups_ = htree_groups;
+  hdr->huffman_tables_ = huffman_tables;
+  return 1;
 
  Error:
   WebPSafeFree(code_lengths);
-  WebPSafeFree(mapping);
-  if (!ok) {
-    WebPSafeFree(huffman_image);
-    VP8LHuffmanTablesDeallocate(huffman_tables);
-    VP8LHtreeGroupsFree(htree_groups);
-  }
-  return ok;
+  WebPSafeFree(huffman_image);
+  WebPSafeFree(huffman_tables);
+  VP8LHtreeGroupsFree(htree_groups);
+  return 0;
 }
 
 //------------------------------------------------------------------------------
 // Scaling.
 
-#if !defined(WEBP_REDUCE_SIZE)
 static int AllocateAndInitRescaler(VP8LDecoder* const dec, VP8Io* const io) {
   const int num_channels = 4;
   const int in_width = io->mb_w;
@@ -567,13 +516,10 @@ static int AllocateAndInitRescaler(VP8LDecoder* const dec, VP8Io* const io) {
                    out_width, out_height, 0, num_channels, work);
   return 1;
 }
-#endif   // WEBP_REDUCE_SIZE
 
 //------------------------------------------------------------------------------
 // Export to ARGB
 
-#if !defined(WEBP_REDUCE_SIZE)
-
 // We have special "export" function since we need to convert from BGRA
 static int Export(WebPRescaler* const rescaler, WEBP_CSP_MODE colorspace,
                   int rgba_stride, uint8_t* const rgba) {
@@ -615,8 +561,6 @@ static int EmitRescaledRowsRGBA(const VP8LDecoder* const dec,
   return num_lines_out;
 }
 
-#endif   // WEBP_REDUCE_SIZE
-
 // Emit rows without any scaling.
 static int EmitRows(WEBP_CSP_MODE colorspace,
                     const uint8_t* row_in, int in_stride,
@@ -758,11 +702,11 @@ static WEBP_INLINE HTreeGroup* GetHtreeGroupForPos(VP8LMetadata* const hdr,
 
 typedef void (*ProcessRowsFunc)(VP8LDecoder* const dec, int row);
 
-static void ApplyInverseTransforms(VP8LDecoder* const dec,
-                                   int start_row, int num_rows,
+static void ApplyInverseTransforms(VP8LDecoder* const dec, int num_rows,
                                    const uint32_t* const rows) {
   int n = dec->next_transform_;
   const int cache_pixs = dec->width_ * num_rows;
+  const int start_row = dec->last_row_;
   const int end_row = start_row + num_rows;
   const uint32_t* rows_in = rows;
   uint32_t* const rows_out = dec->argb_cache_;
@@ -793,7 +737,8 @@ static void ProcessRows(VP8LDecoder* const dec, int row) {
     VP8Io* const io = dec->io_;
     uint8_t* rows_data = (uint8_t*)dec->argb_cache_;
     const int in_stride = io->width * sizeof(uint32_t);  // in unit of RGBA
-    ApplyInverseTransforms(dec, dec->last_row_, num_rows, rows);
+
+    ApplyInverseTransforms(dec, num_rows, rows);
     if (!SetCropWindow(io, dec->last_row_, row, &rows_data, in_stride)) {
       // Nothing to output (this time).
     } else {
@@ -801,12 +746,9 @@ static void ProcessRows(VP8LDecoder* const dec, int row) {
       if (WebPIsRGBMode(output->colorspace)) {  // convert to RGBA
         const WebPRGBABuffer* const buf = &output->u.RGBA;
         uint8_t* const rgba = buf->rgba + dec->last_out_row_ * buf->stride;
-        const int num_rows_out =
-#if !defined(WEBP_REDUCE_SIZE)
-         io->use_scaling ?
+        const int num_rows_out = io->use_scaling ?
             EmitRescaledRowsRGBA(dec, rows_data, in_stride, io->mb_h,
                                  rgba, buf->stride) :
-#endif  // WEBP_REDUCE_SIZE
             EmitRows(output->colorspace, rows_data, in_stride,
                      io->mb_w, io->mb_h, rgba, buf->stride);
         // Update 'last_out_row_'.
@@ -933,11 +875,7 @@ static WEBP_INLINE void CopyBlock8b(uint8_t* const dst, int dist, int length) {
 #endif
         break;
       case 2:
-#if !defined(WORDS_BIGENDIAN)
         memcpy(&pattern, src, sizeof(uint16_t));
-#else
-        pattern = ((uint32_t)src[0] << 8) | src[1];
-#endif
 #if defined(__arm__) || defined(_M_ARM)
         pattern |= pattern << 16;
 #elif defined(WEBP_USE_MIPS_DSP_R2)
@@ -1196,7 +1134,6 @@ static int DecodeImageData(VP8LDecoder* const dec, uint32_t* const data,
       VP8LFillBitWindow(br);
       dist_code = GetCopyDistance(dist_symbol, br);
       dist = PlaneCodeToDistance(width, dist_code);
-
       if (VP8LIsEndOfStream(br)) break;
       if (src - data < (ptrdiff_t)dist || src_end - src < (ptrdiff_t)length) {
         goto Error;
@@ -1358,7 +1295,7 @@ static void ClearMetadata(VP8LMetadata* const hdr) {
   assert(hdr != NULL);
 
   WebPSafeFree(hdr->huffman_image_);
-  VP8LHuffmanTablesDeallocate(&hdr->huffman_tables_);
+  WebPSafeFree(hdr->huffman_tables_);
   VP8LHtreeGroupsFree(hdr->htree_groups_);
   VP8LColorCacheClear(&hdr->color_cache_);
   VP8LColorCacheClear(&hdr->saved_color_cache_);
@@ -1557,7 +1494,7 @@ static void ExtractAlphaRows(VP8LDecoder* const dec, int last_row) {
     const int cache_pixs = width * num_rows_to_process;
     uint8_t* const dst = output + width * cur_row;
     const uint32_t* const src = dec->argb_cache_;
-    ApplyInverseTransforms(dec, cur_row, num_rows_to_process, in);
+    ApplyInverseTransforms(dec, num_rows_to_process, in);
     WebPExtractGreen(src, dst, cache_pixs);
     AlphaApplyFilter(alph_dec,
                      cur_row, cur_row + num_rows_to_process, dst, width);
@@ -1577,6 +1514,7 @@ int VP8LDecodeAlphaHeader(ALPHDecoder* const alph_dec,
   if (dec == NULL) return 0;
 
   assert(alph_dec != NULL);
+  alph_dec->vp8l_dec_ = dec;
 
   dec->width_ = alph_dec->width_;
   dec->height_ = alph_dec->height_;
@@ -1608,12 +1546,11 @@ int VP8LDecodeAlphaHeader(ALPHDecoder* const alph_dec,
 
   if (!ok) goto Err;
 
-  // Only set here, once we are sure it is valid (to avoid thread races).
-  alph_dec->vp8l_dec_ = dec;
   return 1;
 
  Err:
-  VP8LDelete(dec);
+  VP8LDelete(alph_dec->vp8l_dec_);
+  alph_dec->vp8l_dec_ = NULL;
   return 0;
 }
 
@@ -1674,7 +1611,7 @@ int VP8LDecodeImage(VP8LDecoder* const dec) {
   // Sanity checks.
   if (dec == NULL) return 0;
 
-  assert(dec->hdr_.huffman_tables_.root.start != NULL);
+  assert(dec->hdr_.huffman_tables_ != NULL);
   assert(dec->hdr_.htree_groups_ != NULL);
   assert(dec->hdr_.num_htree_groups_ > 0);
 
@@ -1695,19 +1632,12 @@ int VP8LDecodeImage(VP8LDecoder* const dec) {
 
     if (!AllocateInternalBuffers32b(dec, io->width)) goto Err;
 
-#if !defined(WEBP_REDUCE_SIZE)
     if (io->use_scaling && !AllocateAndInitRescaler(dec, io)) goto Err;
-#else
-    if (io->use_scaling) {
-      dec->status_ = VP8_STATUS_INVALID_PARAM;
-      goto Err;
-    }
-#endif
+
     if (io->use_scaling || WebPIsPremultipliedMode(dec->output_->colorspace)) {
       // need the alpha-multiply functions for premultiplied output or rescaling
       WebPInitAlphaProcessing();
     }
-
     if (!WebPIsRGBMode(dec->output_->colorspace)) {
       WebPInitConvertARGBToYUV();
       if (dec->output_->u.YUVA.a != NULL) WebPInitAlphaProcessing();

src/dec/vp8li_dec.h

@@ -12,14 +12,14 @@
 // Author: Skal (pascal.massimino@gmail.com)
 //         Vikas Arora(vikaas.arora@gmail.com)
 
-#ifndef WEBP_DEC_VP8LI_DEC_H_
-#define WEBP_DEC_VP8LI_DEC_H_
+#ifndef WEBP_DEC_VP8LI_H_
+#define WEBP_DEC_VP8LI_H_
 
 #include <string.h>     // for memcpy()
-#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 "./webpi_dec.h"
+#include "../utils/bit_reader_utils.h"
+#include "../utils/color_cache_utils.h"
+#include "../utils/huffman_utils.h"
 
 #ifdef __cplusplus
 extern "C" {
@@ -51,7 +51,7 @@ typedef struct {
   uint32_t       *huffman_image_;
   int             num_htree_groups_;
   HTreeGroup     *htree_groups_;
-  HuffmanTables   huffman_tables_;
+  HuffmanCode    *huffman_tables_;
 } VP8LMetadata;
 
 typedef struct VP8LDecoder VP8LDecoder;
@@ -132,4 +132,4 @@ void VP8LDelete(VP8LDecoder* const dec);
 }    // extern "C"
 #endif
 
-#endif  // WEBP_DEC_VP8LI_DEC_H_
+#endif  /* WEBP_DEC_VP8LI_H_ */

src/dec/webp_dec.c

@@ -13,11 +13,11 @@
 
 #include <stdlib.h>
 
-#include "src/dec/vp8i_dec.h"
-#include "src/dec/vp8li_dec.h"
-#include "src/dec/webpi_dec.h"
-#include "src/utils/utils.h"
-#include "src/webp/mux_types.h"  // ALPHA_FLAG
+#include "./vp8i_dec.h"
+#include "./vp8li_dec.h"
+#include "./webpi_dec.h"
+#include "../utils/utils.h"
+#include "../webp/mux_types.h"  // ALPHA_FLAG
 
 //------------------------------------------------------------------------------
 // RIFF layout is:
@@ -421,9 +421,7 @@ VP8StatusCode WebPParseHeaders(WebPHeaderStructure* const headers) {
                                 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
-    // reconstruct them (see webp/demux.h).
+    // TODO(jzern): full support of animation frames will require API additions.
     if (has_animation) {
       status = VP8_STATUS_UNSUPPORTED_FEATURE;
     }

src/dec/webpi_dec.h

@@ -11,15 +11,15 @@
 //
 // Author: somnath@google.com (Somnath Banerjee)
 
-#ifndef WEBP_DEC_WEBPI_DEC_H_
-#define WEBP_DEC_WEBPI_DEC_H_
+#ifndef WEBP_DEC_WEBPI_H_
+#define WEBP_DEC_WEBPI_H_
 
 #ifdef __cplusplus
 extern "C" {
 #endif
 
-#include "src/utils/rescaler_utils.h"
-#include "src/dec/vp8_dec.h"
+#include "../utils/rescaler_utils.h"
+#include "./vp8_dec.h"
 
 //------------------------------------------------------------------------------
 // WebPDecParams: Decoding output parameters. Transient internal object.
@@ -130,4 +130,4 @@ int WebPAvoidSlowMemory(const WebPDecBuffer* const output,
 }    // extern "C"
 #endif
 
-#endif  // WEBP_DEC_WEBPI_DEC_H_
+#endif  /* WEBP_DEC_WEBPI_H_ */

src/demux/Makefile.am

@@ -1,18 +1,14 @@
-AM_CPPFLAGS += -I$(top_builddir) -I$(top_srcdir)
 lib_LTLIBRARIES = libwebpdemux.la
 
 libwebpdemux_la_SOURCES =
 libwebpdemux_la_SOURCES += anim_decode.c demux.c
 
 libwebpdemuxinclude_HEADERS =
-libwebpdemuxinclude_HEADERS += ../webp/decode.h
 libwebpdemuxinclude_HEADERS += ../webp/demux.h
 libwebpdemuxinclude_HEADERS += ../webp/mux_types.h
 libwebpdemuxinclude_HEADERS += ../webp/types.h
-noinst_HEADERS =
-noinst_HEADERS += ../webp/format_constants.h
 
 libwebpdemux_la_LIBADD = ../libwebp.la
-libwebpdemux_la_LDFLAGS = -no-undefined -version-info 2:6:0
+libwebpdemux_la_LDFLAGS = -no-undefined -version-info 2:2:0
 libwebpdemuxincludedir = $(includedir)/webp
 pkgconfig_DATA = libwebpdemux.pc

src/demux/anim_decode.c

@@ -11,15 +11,15 @@
 //
 
 #ifdef HAVE_CONFIG_H
-#include "src/webp/config.h"
+#include "../webp/config.h"
 #endif
 
 #include <assert.h>
 #include <string.h>
 
-#include "src/utils/utils.h"
-#include "src/webp/decode.h"
-#include "src/webp/demux.h"
+#include "../utils/utils.h"
+#include "../webp/decode.h"
+#include "../webp/demux.h"
 
 #define NUM_CHANNELS 4
 

src/demux/demux.c

@@ -11,21 +11,21 @@
 //
 
 #ifdef HAVE_CONFIG_H
-#include "src/webp/config.h"
+#include "../webp/config.h"
 #endif
 
 #include <assert.h>
 #include <stdlib.h>
 #include <string.h>
 
-#include "src/utils/utils.h"
-#include "src/webp/decode.h"     // WebPGetFeatures
-#include "src/webp/demux.h"
-#include "src/webp/format_constants.h"
+#include "../utils/utils.h"
+#include "../webp/decode.h"     // WebPGetFeatures
+#include "../webp/demux.h"
+#include "../webp/format_constants.h"
 
-#define DMUX_MAJ_VERSION 1
-#define DMUX_MIN_VERSION 0
-#define DMUX_REV_VERSION 3
+#define DMUX_MAJ_VERSION 0
+#define DMUX_MIN_VERSION 3
+#define DMUX_REV_VERSION 2
 
 typedef struct {
   size_t start_;        // start location of the data
@@ -205,14 +205,12 @@ static void SetFrameInfo(size_t start_offset, size_t size,
   frame->complete_ = complete;
 }
 
-// Store image bearing chunks to 'frame'. 'min_size' is an optional size
-// requirement, it may be zero.
+// Store image bearing chunks to 'frame'.
 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) < min_size);
   ParseStatus status = PARSE_OK;
 
   if (done) return PARSE_NEED_MORE_DATA;
@@ -403,9 +401,9 @@ static ParseStatus ParseSingleImage(WebPDemuxer* const dmux) {
   frame = (Frame*)WebPSafeCalloc(1ULL, sizeof(*frame));
   if (frame == NULL) return PARSE_ERROR;
 
-  // 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);
+  // For the single image case we allow parsing of a partial frame, but we need
+  // at least CHUNK_HEADER_SIZE for parsing.
+  status = StoreFrame(1, CHUNK_HEADER_SIZE, &dmux->mem_, frame);
   if (status != PARSE_ERROR) {
     const int has_alpha = !!(dmux->feature_flags_ & ALPHA_FLAG);
     // Clear any alpha when the alpha flag is missing.

src/demux/libwebpdemux.rc

@@ -6,8 +6,8 @@
 LANGUAGE LANG_ENGLISH, SUBLANG_ENGLISH_US
 
 VS_VERSION_INFO VERSIONINFO
- FILEVERSION 1,0,0,3
- PRODUCTVERSION 1,0,0,3
+ FILEVERSION 0,3,0,2
+ PRODUCTVERSION 0,3,0,2
  FILEFLAGSMASK 0x3fL
 #ifdef _DEBUG
  FILEFLAGS 0x1L
@@ -24,12 +24,12 @@ BEGIN
         BEGIN
             VALUE "CompanyName", "Google, Inc."
             VALUE "FileDescription", "libwebpdemux DLL"
-            VALUE "FileVersion", "1.0.3"
+            VALUE "FileVersion", "0.3.2"
             VALUE "InternalName", "libwebpdemux.dll"
-            VALUE "LegalCopyright", "Copyright (C) 2019"
+            VALUE "LegalCopyright", "Copyright (C) 2017"
             VALUE "OriginalFilename", "libwebpdemux.dll"
             VALUE "ProductName", "WebP Image Demuxer"
-            VALUE "ProductVersion", "1.0.3"
+            VALUE "ProductVersion", "0.3.2"
         END
     END
     BLOCK "VarFileInfo"

src/dsp/Makefile.am

@@ -1,18 +1,9 @@
-AM_CPPFLAGS += -I$(top_builddir) -I$(top_srcdir)
-noinst_LTLIBRARIES =
-noinst_LTLIBRARIES += libwebpdsp.la
-noinst_LTLIBRARIES += libwebpdsp_sse2.la
-noinst_LTLIBRARIES += libwebpdspdecode_sse2.la
-noinst_LTLIBRARIES += libwebpdsp_sse41.la
-noinst_LTLIBRARIES += libwebpdspdecode_sse41.la
-noinst_LTLIBRARIES += libwebpdsp_neon.la
-noinst_LTLIBRARIES += libwebpdspdecode_neon.la
-noinst_LTLIBRARIES += libwebpdsp_msa.la
-noinst_LTLIBRARIES += libwebpdspdecode_msa.la
-noinst_LTLIBRARIES += libwebpdsp_mips32.la
-noinst_LTLIBRARIES += libwebpdspdecode_mips32.la
-noinst_LTLIBRARIES += libwebpdsp_mips_dsp_r2.la
-noinst_LTLIBRARIES += libwebpdspdecode_mips_dsp_r2.la
+noinst_LTLIBRARIES = libwebpdsp.la libwebpdsp_avx2.la
+noinst_LTLIBRARIES += libwebpdsp_sse2.la libwebpdspdecode_sse2.la
+noinst_LTLIBRARIES += libwebpdsp_sse41.la libwebpdspdecode_sse41.la
+noinst_LTLIBRARIES += libwebpdsp_neon.la libwebpdspdecode_neon.la
+noinst_LTLIBRARIES += libwebpdsp_msa.la libwebpdspdecode_msa.la
+noinst_LTLIBRARIES += libwebpdspdecode_wasm.la
 
 if BUILD_LIBWEBPDECODER
   noinst_LTLIBRARIES += libwebpdspdecode.la
@@ -23,37 +14,58 @@ commondir = $(includedir)/webp
 
 COMMON_SOURCES =
 COMMON_SOURCES += alpha_processing.c
+COMMON_SOURCES += alpha_processing_mips_dsp_r2.c
+COMMON_SOURCES += common_sse2.h
 COMMON_SOURCES += cpu.c
 COMMON_SOURCES += dec.c
 COMMON_SOURCES += dec_clip_tables.c
+COMMON_SOURCES += dec_mips32.c
+COMMON_SOURCES += dec_mips_dsp_r2.c
 COMMON_SOURCES += dsp.h
 COMMON_SOURCES += filters.c
+COMMON_SOURCES += filters_mips_dsp_r2.c
 COMMON_SOURCES += lossless.c
 COMMON_SOURCES += lossless.h
 COMMON_SOURCES += lossless_common.h
+COMMON_SOURCES += lossless_mips_dsp_r2.c
+COMMON_SOURCES += mips_macro.h
 COMMON_SOURCES += rescaler.c
+COMMON_SOURCES += rescaler_mips32.c
+COMMON_SOURCES += rescaler_mips_dsp_r2.c
 COMMON_SOURCES += upsampling.c
+COMMON_SOURCES += upsampling_mips_dsp_r2.c
 COMMON_SOURCES += yuv.c
 COMMON_SOURCES += yuv.h
+COMMON_SOURCES += yuv_mips32.c
+COMMON_SOURCES += yuv_mips_dsp_r2.c
 
 ENC_SOURCES =
+ENC_SOURCES += argb.c
+ENC_SOURCES += argb_mips_dsp_r2.c
 ENC_SOURCES += cost.c
+ENC_SOURCES += cost_mips32.c
+ENC_SOURCES += cost_mips_dsp_r2.c
 ENC_SOURCES += enc.c
+ENC_SOURCES += enc_mips32.c
+ENC_SOURCES += enc_mips_dsp_r2.c
 ENC_SOURCES += lossless_enc.c
-ENC_SOURCES += quant.h
+ENC_SOURCES += lossless_enc_mips32.c
+ENC_SOURCES += lossless_enc_mips_dsp_r2.c
 ENC_SOURCES += ssim.c
 
+libwebpdsp_avx2_la_SOURCES =
+libwebpdsp_avx2_la_SOURCES += enc_avx2.c
+libwebpdsp_avx2_la_CPPFLAGS = $(libwebpdsp_la_CPPFLAGS)
+libwebpdsp_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
-libwebpdspdecode_sse41_la_SOURCES += upsampling_sse41.c
-libwebpdspdecode_sse41_la_SOURCES += yuv_sse41.c
 libwebpdspdecode_sse41_la_CPPFLAGS = $(libwebpdsp_la_CPPFLAGS)
 libwebpdspdecode_sse41_la_CFLAGS = $(AM_CFLAGS) $(SSE41_FLAGS)
 
 libwebpdspdecode_sse2_la_SOURCES =
 libwebpdspdecode_sse2_la_SOURCES += alpha_processing_sse2.c
-libwebpdspdecode_sse2_la_SOURCES += common_sse2.h
 libwebpdspdecode_sse2_la_SOURCES += dec_sse2.c
 libwebpdspdecode_sse2_la_SOURCES += filters_sse2.c
 libwebpdspdecode_sse2_la_SOURCES += lossless_sse2.c
@@ -85,27 +97,12 @@ libwebpdspdecode_msa_la_SOURCES += upsampling_msa.c
 libwebpdspdecode_msa_la_CPPFLAGS = $(libwebpdsp_msa_la_CPPFLAGS)
 libwebpdspdecode_msa_la_CFLAGS = $(libwebpdsp_msa_la_CFLAGS)
 
-libwebpdspdecode_mips32_la_SOURCES =
-libwebpdspdecode_mips32_la_SOURCES += dec_mips32.c
-libwebpdspdecode_mips32_la_SOURCES += mips_macro.h
-libwebpdspdecode_mips32_la_SOURCES += rescaler_mips32.c
-libwebpdspdecode_mips32_la_SOURCES += yuv_mips32.c
-libwebpdspdecode_mips32_la_CPPFLAGS = $(libwebpdsp_mips32_la_CPPFLAGS)
-libwebpdspdecode_mips32_la_CFLAGS = $(libwebpdsp_mips32_la_CFLAGS)
-
-libwebpdspdecode_mips_dsp_r2_la_SOURCES =
-libwebpdspdecode_mips_dsp_r2_la_SOURCES += alpha_processing_mips_dsp_r2.c
-libwebpdspdecode_mips_dsp_r2_la_SOURCES += dec_mips_dsp_r2.c
-libwebpdspdecode_mips_dsp_r2_la_SOURCES += filters_mips_dsp_r2.c
-libwebpdspdecode_mips_dsp_r2_la_SOURCES += lossless_mips_dsp_r2.c
-libwebpdspdecode_mips_dsp_r2_la_SOURCES += mips_macro.h
-libwebpdspdecode_mips_dsp_r2_la_SOURCES += rescaler_mips_dsp_r2.c
-libwebpdspdecode_mips_dsp_r2_la_SOURCES += upsampling_mips_dsp_r2.c
-libwebpdspdecode_mips_dsp_r2_la_SOURCES += yuv_mips_dsp_r2.c
-libwebpdspdecode_mips_dsp_r2_la_CPPFLAGS = $(libwebpdsp_mips_dsp_r2_la_CPPFLAGS)
-libwebpdspdecode_mips_dsp_r2_la_CFLAGS = $(libwebpdsp_mips_dsp_r2_la_CFLAGS)
+# WASM is not fully integrated into configure; the addition here keeps source
+# extraction by cmake simple.
+libwebpdspdecode_wasm_la_SOURCES = dec_wasm.c
 
 libwebpdsp_sse2_la_SOURCES =
+libwebpdsp_sse2_la_SOURCES += argb_sse2.c
 libwebpdsp_sse2_la_SOURCES += cost_sse2.c
 libwebpdsp_sse2_la_SOURCES += enc_sse2.c
 libwebpdsp_sse2_la_SOURCES += lossless_enc_sse2.c
@@ -122,7 +119,6 @@ libwebpdsp_sse41_la_CFLAGS = $(AM_CFLAGS) $(SSE41_FLAGS)
 libwebpdsp_sse41_la_LIBADD = libwebpdspdecode_sse41.la
 
 libwebpdsp_neon_la_SOURCES =
-libwebpdsp_neon_la_SOURCES += cost_neon.c
 libwebpdsp_neon_la_SOURCES += enc_neon.c
 libwebpdsp_neon_la_SOURCES += lossless_enc_neon.c
 libwebpdsp_neon_la_CPPFLAGS = $(libwebpdsp_la_CPPFLAGS)
@@ -136,22 +132,6 @@ libwebpdsp_msa_la_CPPFLAGS = $(libwebpdsp_la_CPPFLAGS)
 libwebpdsp_msa_la_CFLAGS = $(AM_CFLAGS)
 libwebpdsp_msa_la_LIBADD = libwebpdspdecode_msa.la
 
-libwebpdsp_mips32_la_SOURCES =
-libwebpdsp_mips32_la_SOURCES += cost_mips32.c
-libwebpdsp_mips32_la_SOURCES += enc_mips32.c
-libwebpdsp_mips32_la_SOURCES += lossless_enc_mips32.c
-libwebpdsp_mips32_la_CPPFLAGS = $(libwebpdsp_la_CPPFLAGS)
-libwebpdsp_mips32_la_CFLAGS = $(AM_CFLAGS)
-libwebpdsp_mips32_la_LIBADD = libwebpdspdecode_mips32.la
-
-libwebpdsp_mips_dsp_r2_la_SOURCES =
-libwebpdsp_mips_dsp_r2_la_SOURCES += cost_mips_dsp_r2.c
-libwebpdsp_mips_dsp_r2_la_SOURCES += enc_mips_dsp_r2.c
-libwebpdsp_mips_dsp_r2_la_SOURCES += lossless_enc_mips_dsp_r2.c
-libwebpdsp_mips_dsp_r2_la_CPPFLAGS = $(libwebpdsp_la_CPPFLAGS)
-libwebpdsp_mips_dsp_r2_la_CFLAGS = $(AM_CFLAGS)
-libwebpdsp_mips_dsp_r2_la_LIBADD = libwebpdspdecode_mips_dsp_r2.la
-
 libwebpdsp_la_SOURCES = $(COMMON_SOURCES) $(ENC_SOURCES)
 
 noinst_HEADERS =
@@ -160,15 +140,13 @@ noinst_HEADERS += ../webp/decode.h
 
 libwebpdsp_la_CPPFLAGS =
 libwebpdsp_la_CPPFLAGS += $(AM_CPPFLAGS)
-libwebpdsp_la_CPPFLAGS += $(USE_SWAP_16BIT_CSP)
+libwebpdsp_la_CPPFLAGS += $(USE_EXPERIMENTAL_CODE) $(USE_SWAP_16BIT_CSP)
 libwebpdsp_la_LDFLAGS = -lm
 libwebpdsp_la_LIBADD =
-libwebpdsp_la_LIBADD += libwebpdsp_sse2.la
+libwebpdsp_la_LIBADD += libwebpdsp_avx2.la libwebpdsp_sse2.la
 libwebpdsp_la_LIBADD += libwebpdsp_sse41.la
 libwebpdsp_la_LIBADD += libwebpdsp_neon.la
 libwebpdsp_la_LIBADD += libwebpdsp_msa.la
-libwebpdsp_la_LIBADD += libwebpdsp_mips32.la
-libwebpdsp_la_LIBADD += libwebpdsp_mips_dsp_r2.la
 
 if BUILD_LIBWEBPDECODER
   libwebpdspdecode_la_SOURCES = $(COMMON_SOURCES)
@@ -180,6 +158,4 @@ if BUILD_LIBWEBPDECODER
   libwebpdspdecode_la_LIBADD += libwebpdspdecode_sse41.la
   libwebpdspdecode_la_LIBADD += libwebpdspdecode_neon.la
   libwebpdspdecode_la_LIBADD += libwebpdspdecode_msa.la
-  libwebpdspdecode_la_LIBADD += libwebpdspdecode_mips32.la
-  libwebpdspdecode_la_LIBADD += libwebpdspdecode_mips_dsp_r2.la
 endif

src/dsp/alpha_processing.c

@@ -12,13 +12,10 @@
 // Author: Skal (pascal.massimino@gmail.com)
 
 #include <assert.h>
-#include "src/dsp/dsp.h"
+#include "./dsp.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
-#endif
-
+// #define USE_TABLES_FOR_ALPHA_MULT
 
 // -----------------------------------------------------------------------------
 
@@ -32,7 +29,7 @@ static uint32_t Mult(uint8_t x, uint32_t mult) {
   return v;
 }
 
-#if (USE_TABLES_FOR_ALPHA_MULT == 1)
+#ifdef USE_TABLES_FOR_ALPHA_MULT
 
 static const uint32_t kMultTables[2][256] = {
   {    // (255u << MFIX) / alpha
@@ -135,9 +132,9 @@ static WEBP_INLINE uint32_t GetScale(uint32_t a, int inverse) {
   return inverse ? (255u << MFIX) / a : a * KINV_255;
 }
 
-#endif  // USE_TABLES_FOR_ALPHA_MULT
+#endif    // USE_TABLES_FOR_ALPHA_MULT
 
-void WebPMultARGBRow_C(uint32_t* const ptr, int width, int inverse) {
+void WebPMultARGBRowC(uint32_t* const ptr, int width, int inverse) {
   int x;
   for (x = 0; x < width; ++x) {
     const uint32_t argb = ptr[x];
@@ -157,8 +154,8 @@ void WebPMultARGBRow_C(uint32_t* const ptr, int width, int inverse) {
   }
 }
 
-void WebPMultRow_C(uint8_t* const ptr, const uint8_t* const alpha,
-                   int width, int inverse) {
+void WebPMultRowC(uint8_t* const ptr, const uint8_t* const alpha,
+                  int width, int inverse) {
   int x;
   for (x = 0; x < width; ++x) {
     const uint32_t a = alpha[x];
@@ -220,9 +217,8 @@ void WebPMultRows(uint8_t* ptr, int stride,
 #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(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);
@@ -239,7 +235,6 @@ static void ApplyAlphaMultiply_C(uint8_t* rgba, int alpha_first,
     rgba += stride;
   }
 }
-#endif  // !WEBP_NEON_OMIT_C_CODE
 #undef MULTIPLIER
 #undef PREMULTIPLY
 
@@ -259,9 +254,9 @@ 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,
-                                                 int rg_byte_pos /* 0 or 1 */) {
+static WEBP_INLINE void ApplyAlphaMultiply4444(uint8_t* rgba4444,
+                                               int w, int h, int stride,
+                                               int rg_byte_pos /* 0 or 1 */) {
   while (h-- > 0) {
     int i;
     for (i = 0; i < w; ++i) {
@@ -280,16 +275,15 @@ 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) {
-#if (WEBP_SWAP_16BIT_CSP == 1)
-  ApplyAlphaMultiply4444_C(rgba4444, w, h, stride, 1);
+static void ApplyAlphaMultiply_16b(uint8_t* rgba4444,
+                                   int w, int h, int stride) {
+#ifdef WEBP_SWAP_16BIT_CSP
+  ApplyAlphaMultiply4444(rgba4444, w, h, stride, 1);
 #else
-  ApplyAlphaMultiply4444_C(rgba4444, w, h, stride, 0);
+  ApplyAlphaMultiply4444(rgba4444, w, h, stride, 0);
 #endif
 }
 
-#if !WEBP_NEON_OMIT_C_CODE
 static int DispatchAlpha_C(const uint8_t* alpha, int alpha_stride,
                            int width, int height,
                            uint8_t* dst, int dst_stride) {
@@ -344,46 +338,6 @@ static void ExtractGreen_C(const uint32_t* argb, uint8_t* alpha, int size) {
   int i;
   for (i = 0; i < size; ++i) alpha[i] = argb[i] >> 8;
 }
-#endif  // !WEBP_NEON_OMIT_C_CODE
-
-//------------------------------------------------------------------------------
-
-static int HasAlpha8b_C(const uint8_t* src, int length) {
-  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;
-  return 0;
-}
-
-//------------------------------------------------------------------------------
-// Simple channel manipulations.
-
-static WEBP_INLINE uint32_t MakeARGB32(int a, int r, int g, int b) {
-  return (((uint32_t)a << 24) | (r << 16) | (g << 8) | b);
-}
-
-#ifdef WORDS_BIGENDIAN
-static void PackARGB_C(const uint8_t* a, const uint8_t* r, const uint8_t* g,
-                       const uint8_t* b, int len, uint32_t* out) {
-  int i;
-  for (i = 0; i < len; ++i) {
-    out[i] = MakeARGB32(a[4 * i], r[4 * i], g[4 * i], b[4 * i]);
-  }
-}
-#endif
-
-static void PackRGB_C(const uint8_t* r, const uint8_t* g, const uint8_t* b,
-                      int len, int step, uint32_t* out) {
-  int i, offset = 0;
-  for (i = 0; i < len; ++i) {
-    out[i] = MakeARGB32(0xff, r[offset], g[offset], b[offset]);
-    offset += step;
-  }
-}
 
 void (*WebPApplyAlphaMultiply)(uint8_t*, int, int, int, int);
 void (*WebPApplyAlphaMultiply4444)(uint8_t*, int, int, int);
@@ -391,15 +345,6 @@ int (*WebPDispatchAlpha)(const uint8_t*, int, int, int, uint8_t*, int);
 void (*WebPDispatchAlphaToGreen)(const uint8_t*, int, int, int, uint32_t*, int);
 int (*WebPExtractAlpha)(const uint8_t*, int, int, int, uint8_t*, int);
 void (*WebPExtractGreen)(const uint32_t* argb, uint8_t* alpha, int size);
-#ifdef WORDS_BIGENDIAN
-void (*WebPPackARGB)(const uint8_t* a, const uint8_t* r, const uint8_t* g,
-                     const uint8_t* b, int, uint32_t*);
-#endif
-void (*WebPPackRGB)(const uint8_t* r, const uint8_t* g, const uint8_t* b,
-                    int len, int step, uint32_t* out);
-
-int (*WebPHasAlpha8b)(const uint8_t* src, int length);
-int (*WebPHasAlpha32b)(const uint8_t* src, int length);
 
 //------------------------------------------------------------------------------
 // Init function
@@ -409,25 +354,21 @@ extern void WebPInitAlphaProcessingSSE2(void);
 extern void WebPInitAlphaProcessingSSE41(void);
 extern void WebPInitAlphaProcessingNEON(void);
 
-WEBP_DSP_INIT_FUNC(WebPInitAlphaProcessing) {
-  WebPMultARGBRow = WebPMultARGBRow_C;
-  WebPMultRow = WebPMultRow_C;
-  WebPApplyAlphaMultiply4444 = ApplyAlphaMultiply_16b_C;
+static volatile VP8CPUInfo alpha_processing_last_cpuinfo_used =
+    (VP8CPUInfo)&alpha_processing_last_cpuinfo_used;
+
+WEBP_TSAN_IGNORE_FUNCTION void WebPInitAlphaProcessing(void) {
+  if (alpha_processing_last_cpuinfo_used == VP8GetCPUInfo) return;
+
+  WebPMultARGBRow = WebPMultARGBRowC;
+  WebPMultRow = WebPMultRowC;
+  WebPApplyAlphaMultiply = ApplyAlphaMultiply;
+  WebPApplyAlphaMultiply4444 = ApplyAlphaMultiply_16b;
 
-#ifdef WORDS_BIGENDIAN
-  WebPPackARGB = PackARGB_C;
-#endif
-  WebPPackRGB = PackRGB_C;
-#if !WEBP_NEON_OMIT_C_CODE
-  WebPApplyAlphaMultiply = ApplyAlphaMultiply_C;
   WebPDispatchAlpha = DispatchAlpha_C;
   WebPDispatchAlphaToGreen = DispatchAlphaToGreen_C;
   WebPExtractAlpha = ExtractAlpha_C;
   WebPExtractGreen = ExtractGreen_C;
-#endif
-
-  WebPHasAlpha8b = HasAlpha8b_C;
-  WebPHasAlpha32b = HasAlpha32b_C;
 
   // If defined, use CPUInfo() to overwrite some pointers with faster versions.
   if (VP8GetCPUInfo != NULL) {
@@ -441,32 +382,16 @@ WEBP_DSP_INIT_FUNC(WebPInitAlphaProcessing) {
 #endif
     }
 #endif
+#if defined(WEBP_USE_NEON)
+    if (VP8GetCPUInfo(kNEON)) {
+      WebPInitAlphaProcessingNEON();
+    }
+#endif
 #if defined(WEBP_USE_MIPS_DSP_R2)
     if (VP8GetCPUInfo(kMIPSdspR2)) {
       WebPInitAlphaProcessingMIPSdspR2();
     }
 #endif
   }
-
-#if defined(WEBP_USE_NEON)
-  if (WEBP_NEON_OMIT_C_CODE ||
-      (VP8GetCPUInfo != NULL && VP8GetCPUInfo(kNEON))) {
-    WebPInitAlphaProcessingNEON();
-  }
-#endif
-
-  assert(WebPMultARGBRow != NULL);
-  assert(WebPMultRow != NULL);
-  assert(WebPApplyAlphaMultiply != NULL);
-  assert(WebPApplyAlphaMultiply4444 != NULL);
-  assert(WebPDispatchAlpha != NULL);
-  assert(WebPDispatchAlphaToGreen != NULL);
-  assert(WebPExtractAlpha != NULL);
-  assert(WebPExtractGreen != NULL);
-#ifdef WORDS_BIGENDIAN
-  assert(WebPPackARGB != NULL);
-#endif
-  assert(WebPPackRGB != NULL);
-  assert(WebPHasAlpha8b != NULL);
-  assert(WebPHasAlpha32b != NULL);
+  alpha_processing_last_cpuinfo_used = VP8GetCPUInfo;
 }

src/dsp/alpha_processing_mips_dsp_r2.c

@@ -12,13 +12,13 @@
 // Author(s): Branimir Vasic (branimir.vasic@imgtec.com)
 //            Djordje Pesut  (djordje.pesut@imgtec.com)
 
-#include "src/dsp/dsp.h"
+#include "./dsp.h"
 
 #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) {
+static int DispatchAlpha(const uint8_t* alpha, int alpha_stride,
+                         int width, int height,
+                         uint8_t* dst, int dst_stride) {
   uint32_t alpha_mask = 0xffffffff;
   int i, j, temp0;
 
@@ -79,8 +79,7 @@ static int DispatchAlpha_MIPSdspR2(const uint8_t* alpha, int alpha_stride,
   return (alpha_mask != 0xff);
 }
 
-static void MultARGBRow_MIPSdspR2(uint32_t* const ptr, int width,
-                                  int inverse) {
+static void MultARGBRow(uint32_t* const ptr, int width, int inverse) {
   int x;
   const uint32_t c_00ffffff = 0x00ffffffu;
   const uint32_t c_ff000000 = 0xff000000u;
@@ -125,100 +124,14 @@ static void MultARGBRow_MIPSdspR2(uint32_t* const ptr, int width,
   }
 }
 
-#ifdef WORDS_BIGENDIAN
-static void PackARGB_MIPSdspR2(const uint8_t* a, const uint8_t* r,
-                               const uint8_t* g, const uint8_t* b, int len,
-                               uint32_t* out) {
-  int temp0, temp1, temp2, temp3, offset;
-  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"
-  );
-}
-#endif  // WORDS_BIGENDIAN
-
-static void PackRGB_MIPSdspR2(const uint8_t* r, const uint8_t* g,
-                              const uint8_t* b, int len, int step,
-                              uint32_t* out) {
-  int temp0, temp1, temp2, offset;
-  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"
-  );
-}
-
 //------------------------------------------------------------------------------
 // Entry point
 
 extern void WebPInitAlphaProcessingMIPSdspR2(void);
 
 WEBP_TSAN_IGNORE_FUNCTION void WebPInitAlphaProcessingMIPSdspR2(void) {
-  WebPDispatchAlpha = DispatchAlpha_MIPSdspR2;
-  WebPMultARGBRow = MultARGBRow_MIPSdspR2;
-#ifdef WORDS_BIGENDIAN
-  WebPPackARGB = PackARGB_MIPSdspR2;
-#endif
-  WebPPackRGB = PackRGB_MIPSdspR2;
+  WebPDispatchAlpha = DispatchAlpha;
+  WebPMultARGBRow = MultARGBRow;
 }
 
 #else  // !WEBP_USE_MIPS_DSP_R2

src/dsp/alpha_processing_neon.c

@@ -11,11 +11,11 @@
 //
 // Author: Skal (pascal.massimino@gmail.com)
 
-#include "src/dsp/dsp.h"
+#include "./dsp.h"
 
 #if defined(WEBP_USE_NEON)
 
-#include "src/dsp/neon.h"
+#include "./neon.h"
 
 //------------------------------------------------------------------------------
 
@@ -83,7 +83,7 @@ static void ApplyAlphaMultiply_NEON(uint8_t* rgba, int alpha_first,
 static int DispatchAlpha_NEON(const uint8_t* alpha, int alpha_stride,
                               int width, int height,
                               uint8_t* dst, int dst_stride) {
-  uint32_t alpha_mask = 0xffu;
+  uint32_t alpha_mask = 0xffffffffu;
   uint8x8_t mask8 = vdup_n_u8(0xff);
   uint32_t tmp[2];
   int i, j;
@@ -107,7 +107,6 @@ static int DispatchAlpha_NEON(const uint8_t* alpha, int alpha_stride,
     dst += dst_stride;
   }
   vst1_u8((uint8_t*)tmp, mask8);
-  alpha_mask *= 0x01010101;
   alpha_mask &= tmp[0];
   alpha_mask &= tmp[1];
   return (alpha_mask != 0xffffffffu);
@@ -135,7 +134,7 @@ static void DispatchAlphaToGreen_NEON(const uint8_t* alpha, int alpha_stride,
 static int ExtractAlpha_NEON(const uint8_t* argb, int argb_stride,
                              int width, int height,
                              uint8_t* alpha, int alpha_stride) {
-  uint32_t alpha_mask = 0xffu;
+  uint32_t alpha_mask = 0xffffffffu;
   uint8x8_t mask8 = vdup_n_u8(0xff);
   uint32_t tmp[2];
   int i, j;
@@ -157,7 +156,6 @@ static int ExtractAlpha_NEON(const uint8_t* argb, int argb_stride,
     alpha += alpha_stride;
   }
   vst1_u8((uint8_t*)tmp, mask8);
-  alpha_mask *= 0x01010101;
   alpha_mask &= tmp[0];
   alpha_mask &= tmp[1];
   return (alpha_mask == 0xffffffffu);

src/dsp/alpha_processing_sse2.c

@@ -11,16 +11,16 @@
 //
 // Author: Skal (pascal.massimino@gmail.com)
 
-#include "src/dsp/dsp.h"
+#include "./dsp.h"
 
 #if defined(WEBP_USE_SSE2)
 #include <emmintrin.h>
 
 //------------------------------------------------------------------------------
 
-static int DispatchAlpha_SSE2(const uint8_t* alpha, int alpha_stride,
-                              int width, int height,
-                              uint8_t* dst, int dst_stride) {
+static int DispatchAlpha(const uint8_t* alpha, int alpha_stride,
+                         int width, int height,
+                         uint8_t* dst, int dst_stride) {
   // alpha_and stores an 'and' operation of all the alpha[] values. The final
   // value is not 0xff if any of the alpha[] is not equal to 0xff.
   uint32_t alpha_and = 0xff;
@@ -72,9 +72,9 @@ static int DispatchAlpha_SSE2(const uint8_t* alpha, int alpha_stride,
   return (alpha_and != 0xff);
 }
 
-static void DispatchAlphaToGreen_SSE2(const uint8_t* alpha, int alpha_stride,
-                                      int width, int height,
-                                      uint32_t* dst, int dst_stride) {
+static void DispatchAlphaToGreen(const uint8_t* alpha, int alpha_stride,
+                                 int width, int height,
+                                 uint32_t* dst, int dst_stride) {
   int i, j;
   const __m128i zero = _mm_setzero_si128();
   const int limit = width & ~15;
@@ -98,9 +98,9 @@ static void DispatchAlphaToGreen_SSE2(const uint8_t* alpha, int alpha_stride,
   }
 }
 
-static int ExtractAlpha_SSE2(const uint8_t* argb, int argb_stride,
-                             int width, int height,
-                             uint8_t* alpha, int alpha_stride) {
+static int ExtractAlpha(const uint8_t* argb, int argb_stride,
+                        int width, int height,
+                        uint8_t* alpha, int alpha_stride) {
   // alpha_and stores an 'and' operation of all the alpha[] values. The final
   // value is not 0xff if any of the alpha[] is not equal to 0xff.
   uint32_t alpha_and = 0xff;
@@ -210,61 +210,6 @@ static void ApplyAlphaMultiply_SSE2(uint8_t* rgba, int alpha_first,
 #undef MULTIPLIER
 #undef PREMULTIPLY
 
-//------------------------------------------------------------------------------
-// Alpha detection
-
-static int HasAlpha8b_SSE2(const uint8_t* src, int length) {
-  const __m128i all_0xff = _mm_set1_epi8((char)0xff);
-  int i = 0;
-  for (; i + 16 <= length; i += 16) {
-    const __m128i v = _mm_loadu_si128((const __m128i*)(src + i));
-    const __m128i bits = _mm_cmpeq_epi8(v, all_0xff);
-    const int mask = _mm_movemask_epi8(bits);
-    if (mask != 0xffff) return 1;
-  }
-  for (; i < length; ++i) if (src[i] != 0xff) return 1;
-  return 0;
-}
-
-static int HasAlpha32b_SSE2(const uint8_t* src, int length) {
-  const __m128i alpha_mask = _mm_set1_epi32(0xff);
-  const __m128i all_0xff = _mm_set1_epi8((char)0xff);
-  int i = 0;
-  // We don't know if we can access the last 3 bytes after the last alpha
-  // value 'src[4 * length - 4]' (because we don't know if alpha is the first
-  // or the last byte of the quadruplet). Hence the '-3' protection below.
-  length = length * 4 - 3;   // size in bytes
-  for (; i + 64 <= length; i += 64) {
-    const __m128i a0 = _mm_loadu_si128((const __m128i*)(src + i +  0));
-    const __m128i a1 = _mm_loadu_si128((const __m128i*)(src + i + 16));
-    const __m128i a2 = _mm_loadu_si128((const __m128i*)(src + i + 32));
-    const __m128i a3 = _mm_loadu_si128((const __m128i*)(src + i + 48));
-    const __m128i b0 = _mm_and_si128(a0, alpha_mask);
-    const __m128i b1 = _mm_and_si128(a1, alpha_mask);
-    const __m128i b2 = _mm_and_si128(a2, alpha_mask);
-    const __m128i b3 = _mm_and_si128(a3, alpha_mask);
-    const __m128i c0 = _mm_packs_epi32(b0, b1);
-    const __m128i c1 = _mm_packs_epi32(b2, b3);
-    const __m128i d  = _mm_packus_epi16(c0, c1);
-    const __m128i bits = _mm_cmpeq_epi8(d, all_0xff);
-    const int mask = _mm_movemask_epi8(bits);
-    if (mask != 0xffff) return 1;
-  }
-  for (; i + 32 <= length; i += 32) {
-    const __m128i a0 = _mm_loadu_si128((const __m128i*)(src + i +  0));
-    const __m128i a1 = _mm_loadu_si128((const __m128i*)(src + i + 16));
-    const __m128i b0 = _mm_and_si128(a0, alpha_mask);
-    const __m128i b1 = _mm_and_si128(a1, alpha_mask);
-    const __m128i c  = _mm_packs_epi32(b0, b1);
-    const __m128i d  = _mm_packus_epi16(c, c);
-    const __m128i bits = _mm_cmpeq_epi8(d, all_0xff);
-    const int mask = _mm_movemask_epi8(bits);
-    if (mask != 0xffff) return 1;
-  }
-  for (; i <= length; i += 4) if (src[i] != 0xff) return 1;
-  return 0;
-}
-
 // -----------------------------------------------------------------------------
 // Apply alpha value to rows
 
@@ -293,7 +238,7 @@ static void MultARGBRow_SSE2(uint32_t* const ptr, int width, int inverse) {
     }
   }
   width -= x;
-  if (width > 0) WebPMultARGBRow_C(ptr + x, width, inverse);
+  if (width > 0) WebPMultARGBRowC(ptr + x, width, inverse);
 }
 
 static void MultRow_SSE2(uint8_t* const ptr, const uint8_t* const alpha,
@@ -316,7 +261,7 @@ static void MultRow_SSE2(uint8_t* const ptr, const uint8_t* const alpha,
     }
   }
   width -= x;
-  if (width > 0) WebPMultRow_C(ptr + x, alpha + x, width, inverse);
+  if (width > 0) WebPMultRowC(ptr + x, alpha + x, width, inverse);
 }
 
 //------------------------------------------------------------------------------
@@ -328,12 +273,9 @@ WEBP_TSAN_IGNORE_FUNCTION void WebPInitAlphaProcessingSSE2(void) {
   WebPMultARGBRow = MultARGBRow_SSE2;
   WebPMultRow = MultRow_SSE2;
   WebPApplyAlphaMultiply = ApplyAlphaMultiply_SSE2;
-  WebPDispatchAlpha = DispatchAlpha_SSE2;
-  WebPDispatchAlphaToGreen = DispatchAlphaToGreen_SSE2;
-  WebPExtractAlpha = ExtractAlpha_SSE2;
-
-  WebPHasAlpha8b = HasAlpha8b_SSE2;
-  WebPHasAlpha32b = HasAlpha32b_SSE2;
+  WebPDispatchAlpha = DispatchAlpha;
+  WebPDispatchAlphaToGreen = DispatchAlphaToGreen;
+  WebPExtractAlpha = ExtractAlpha;
 }
 
 #else  // !WEBP_USE_SSE2

src/dsp/alpha_processing_sse41.c

@@ -11,7 +11,7 @@
 //
 // Author: Skal (pascal.massimino@gmail.com)
 
-#include "src/dsp/dsp.h"
+#include "./dsp.h"
 
 #if defined(WEBP_USE_SSE41)
 
@@ -19,9 +19,9 @@
 
 //------------------------------------------------------------------------------
 
-static int ExtractAlpha_SSE41(const uint8_t* argb, int argb_stride,
-                              int width, int height,
-                              uint8_t* alpha, int alpha_stride) {
+static int ExtractAlpha(const uint8_t* argb, int argb_stride,
+                        int width, int height,
+                        uint8_t* alpha, int alpha_stride) {
   // alpha_and stores an 'and' operation of all the alpha[] values. The final
   // value is not 0xff if any of the alpha[] is not equal to 0xff.
   uint32_t alpha_and = 0xff;
@@ -82,7 +82,7 @@ static int ExtractAlpha_SSE41(const uint8_t* argb, int argb_stride,
 extern void WebPInitAlphaProcessingSSE41(void);
 
 WEBP_TSAN_IGNORE_FUNCTION void WebPInitAlphaProcessingSSE41(void) {
-  WebPExtractAlpha = ExtractAlpha_SSE41;
+  WebPExtractAlpha = ExtractAlpha;
 }
 
 #else  // !WEBP_USE_SSE41

src/dsp/argb.c

@@ -0,0 +1,68 @@
+// Copyright 2014 Google Inc. All Rights Reserved.
+//
+// Use of this source code is governed by a BSD-style license
+// that can be found in the COPYING file in the root of the source
+// tree. An additional intellectual property rights grant can be found
+// in the file PATENTS. All contributing project authors may
+// be found in the AUTHORS file in the root of the source tree.
+// -----------------------------------------------------------------------------
+//
+//   ARGB making functions.
+//
+// Author: Djordje Pesut (djordje.pesut@imgtec.com)
+
+#include "./dsp.h"
+
+static WEBP_INLINE uint32_t MakeARGB32(int a, int r, int g, int b) {
+  return (((uint32_t)a << 24) | (r << 16) | (g << 8) | b);
+}
+
+static void PackARGB(const uint8_t* a, const uint8_t* r, const uint8_t* g,
+                     const uint8_t* b, int len, uint32_t* out) {
+  int i;
+  for (i = 0; i < len; ++i) {
+    out[i] = MakeARGB32(a[4 * i], r[4 * i], g[4 * i], b[4 * i]);
+  }
+}
+
+static void PackRGB(const uint8_t* r, const uint8_t* g, const uint8_t* b,
+                    int len, int step, uint32_t* out) {
+  int i, offset = 0;
+  for (i = 0; i < len; ++i) {
+    out[i] = MakeARGB32(0xff, r[offset], g[offset], b[offset]);
+    offset += step;
+  }
+}
+
+void (*VP8PackARGB)(const uint8_t*, const uint8_t*, const uint8_t*,
+                    const uint8_t*, int, uint32_t*);
+void (*VP8PackRGB)(const uint8_t*, const uint8_t*, const uint8_t*,
+                   int, int, uint32_t*);
+
+extern void VP8EncDspARGBInitMIPSdspR2(void);
+extern void VP8EncDspARGBInitSSE2(void);
+
+static volatile VP8CPUInfo argb_last_cpuinfo_used =
+    (VP8CPUInfo)&argb_last_cpuinfo_used;
+
+WEBP_TSAN_IGNORE_FUNCTION void VP8EncDspARGBInit(void) {
+  if (argb_last_cpuinfo_used == VP8GetCPUInfo) return;
+
+  VP8PackARGB = PackARGB;
+  VP8PackRGB = PackRGB;
+
+  // If defined, use CPUInfo() to overwrite some pointers with faster versions.
+  if (VP8GetCPUInfo != NULL) {
+#if defined(WEBP_USE_SSE2)
+    if (VP8GetCPUInfo(kSSE2)) {
+      VP8EncDspARGBInitSSE2();
+    }
+#endif
+#if defined(WEBP_USE_MIPS_DSP_R2)
+    if (VP8GetCPUInfo(kMIPSdspR2)) {
+      VP8EncDspARGBInitMIPSdspR2();
+    }
+#endif
+  }
+  argb_last_cpuinfo_used = VP8GetCPUInfo;
+}

src/dsp/argb_mips_dsp_r2.c

@@ -0,0 +1,110 @@
+// Copyright 2014 Google Inc. All Rights Reserved.
+//
+// Use of this source code is governed by a BSD-style license
+// that can be found in the COPYING file in the root of the source
+// tree. An additional intellectual property rights grant can be found
+// in the file PATENTS. All contributing project authors may
+// be found in the AUTHORS file in the root of the source tree.
+// -----------------------------------------------------------------------------
+//
+//   ARGB making functions (mips version).
+//
+// Author: Djordje Pesut (djordje.pesut@imgtec.com)
+
+#include "./dsp.h"
+
+#if defined(WEBP_USE_MIPS_DSP_R2)
+
+static void PackARGB(const uint8_t* a, const uint8_t* r, const uint8_t* g,
+                     const uint8_t* b, int len, uint32_t* out) {
+  int temp0, temp1, temp2, temp3, offset;
+  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"
+  );
+}
+
+static void PackRGB(const uint8_t* r, const uint8_t* g, const uint8_t* b,
+                    int len, int step, uint32_t* out) {
+  int temp0, temp1, temp2, offset;
+  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"
+  );
+}
+
+//------------------------------------------------------------------------------
+// Entry point
+
+extern void VP8EncDspARGBInitMIPSdspR2(void);
+
+WEBP_TSAN_IGNORE_FUNCTION void VP8EncDspARGBInitMIPSdspR2(void) {
+  VP8PackARGB = PackARGB;
+  VP8PackRGB = PackRGB;
+}
+
+#else  // !WEBP_USE_MIPS_DSP_R2
+
+WEBP_DSP_INIT_STUB(VP8EncDspARGBInitMIPSdspR2)
+
+#endif  // WEBP_USE_MIPS_DSP_R2

src/dsp/argb_sse2.c

@@ -0,0 +1,53 @@
+// Copyright 2014 Google Inc. All Rights Reserved.
+//
+// Use of this source code is governed by a BSD-style license
+// that can be found in the COPYING file in the root of the source
+// tree. An additional intellectual property rights grant can be found
+// in the file PATENTS. All contributing project authors may
+// be found in the AUTHORS file in the root of the source tree.
+// -----------------------------------------------------------------------------
+//
+//   ARGB making functions (SSE2 version).
+//
+// Author: Skal (pascal.massimino@gmail.com)
+
+#include "./dsp.h"
+#include "./lossless.h"
+
+#if defined(WEBP_USE_SSE2)
+
+#include <assert.h>
+#include <emmintrin.h>
+#include <string.h>
+
+static void PackARGB(const uint8_t* a, const uint8_t* r, const uint8_t* g,
+                     const uint8_t* b, int len, uint32_t* out) {
+  (void)a;
+  if (g == r + 1) {  // RGBA input order. Need to swap R and B.
+    assert(b == r + 2);
+    assert(a == r + 3);
+    VP8LConvertBGRAToRGBA((const uint32_t*)r, len, (uint8_t*)out);
+  } else {
+    assert(g == b + 1);
+    assert(r == b + 2);
+    assert(a == b + 3);
+    memcpy(out, b, len * 4);
+  }
+}
+
+//------------------------------------------------------------------------------
+// Entry point
+
+extern void VP8EncDspARGBInitSSE2(void);
+extern void VP8LDspInitSSE2(void);
+
+WEBP_TSAN_IGNORE_FUNCTION void VP8EncDspARGBInitSSE2(void) {
+  VP8LDspInitSSE2();
+  VP8PackARGB = PackARGB;
+}
+
+#else  // !WEBP_USE_SSE2
+
+WEBP_DSP_INIT_STUB(VP8EncDspARGBInitSSE2)
+
+#endif  // WEBP_USE_SSE2

src/dsp/common_sse2.h

@@ -128,9 +128,9 @@ static WEBP_INLINE void VP8Transpose_2_4x4_16b(
 // Pack the planar buffers
 // rrrr... rrrr... gggg... gggg... bbbb... bbbb....
 // triplet by triplet in the output buffer rgb as rgbrgbrgbrgb ...
-static WEBP_INLINE void VP8PlanarTo24b_SSE2(
-    __m128i* const in0, __m128i* const in1, __m128i* const in2,
-    __m128i* const in3, __m128i* const in4, __m128i* const in5) {
+static WEBP_INLINE void VP8PlanarTo24b(__m128i* const in0, __m128i* const in1,
+                                       __m128i* const in2, __m128i* const in3,
+                                       __m128i* const in4, __m128i* const in5) {
   // The input is 6 registers of sixteen 8b but for the sake of explanation,
   // let's take 6 registers of four 8b values.
   // To pack, we will keep taking one every two 8b integer and move it
@@ -159,10 +159,10 @@ static WEBP_INLINE void VP8PlanarTo24b_SSE2(
 
 // Convert four packed four-channel buffers like argbargbargbargb... into the
 // split channels aaaaa ... rrrr ... gggg .... bbbbb ......
-static WEBP_INLINE void VP8L32bToPlanar_SSE2(__m128i* const in0,
-                                             __m128i* const in1,
-                                             __m128i* const in2,
-                                             __m128i* const in3) {
+static WEBP_INLINE void VP8L32bToPlanar(__m128i* const in0,
+                                        __m128i* const in1,
+                                        __m128i* const in2,
+                                        __m128i* const in3) {
   // Column-wise transpose.
   const __m128i A0 = _mm_unpacklo_epi8(*in0, *in1);
   const __m128i A1 = _mm_unpackhi_epi8(*in0, *in1);

src/dsp/common_sse41.h

@@ -1,132 +0,0 @@
-// Copyright 2016 Google Inc. All Rights Reserved.
-//
-// Use of this source code is governed by a BSD-style license
-// that can be found in the COPYING file in the root of the source
-// tree. An additional intellectual property rights grant can be found
-// in the file PATENTS. All contributing project authors may
-// be found in the AUTHORS file in the root of the source tree.
-// -----------------------------------------------------------------------------
-//
-// SSE4 code common to several files.
-//
-// Author: Vincent Rabaud (vrabaud@google.com)
-
-#ifndef WEBP_DSP_COMMON_SSE41_H_
-#define WEBP_DSP_COMMON_SSE41_H_
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#if defined(WEBP_USE_SSE41)
-#include <smmintrin.h>
-
-//------------------------------------------------------------------------------
-// Channel mixing.
-// Shuffles the input buffer as A0 0 0 A1 0 0 A2 ...
-#define WEBP_SSE41_SHUFF(OUT, IN0, IN1)    \
-  OUT##0 = _mm_shuffle_epi8(*IN0, shuff0); \
-  OUT##1 = _mm_shuffle_epi8(*IN0, shuff1); \
-  OUT##2 = _mm_shuffle_epi8(*IN0, shuff2); \
-  OUT##3 = _mm_shuffle_epi8(*IN1, shuff0); \
-  OUT##4 = _mm_shuffle_epi8(*IN1, shuff1); \
-  OUT##5 = _mm_shuffle_epi8(*IN1, shuff2);
-
-// Pack the planar buffers
-// rrrr... rrrr... gggg... gggg... bbbb... bbbb....
-// triplet by triplet in the output buffer rgb as rgbrgbrgbrgb ...
-static WEBP_INLINE void VP8PlanarTo24b_SSE41(
-    __m128i* const in0, __m128i* const in1, __m128i* const in2,
-    __m128i* const in3, __m128i* const in4, __m128i* const in5) {
-  __m128i R0, R1, R2, R3, R4, R5;
-  __m128i G0, G1, G2, G3, G4, G5;
-  __m128i B0, B1, B2, B3, B4, B5;
-
-  // Process R.
-  {
-    const __m128i shuff0 = _mm_set_epi8(
-        5, -1, -1, 4, -1, -1, 3, -1, -1, 2, -1, -1, 1, -1, -1, 0);
-    const __m128i shuff1 = _mm_set_epi8(
-        -1, 10, -1, -1, 9, -1, -1, 8, -1, -1, 7, -1, -1, 6, -1, -1);
-    const __m128i shuff2 = _mm_set_epi8(
-     -1, -1, 15, -1, -1, 14, -1, -1, 13, -1, -1, 12, -1, -1, 11, -1);
-    WEBP_SSE41_SHUFF(R, in0, in1)
-  }
-
-  // Process G.
-  {
-    // Same as before, just shifted to the left by one and including the right
-    // padding.
-    const __m128i shuff0 = _mm_set_epi8(
-        -1, -1, 4, -1, -1, 3, -1, -1, 2, -1, -1, 1, -1, -1, 0, -1);
-    const __m128i shuff1 = _mm_set_epi8(
-        10, -1, -1, 9, -1, -1, 8, -1, -1, 7, -1, -1, 6, -1, -1, 5);
-    const __m128i shuff2 = _mm_set_epi8(
-     -1, 15, -1, -1, 14, -1, -1, 13, -1, -1, 12, -1, -1, 11, -1, -1);
-    WEBP_SSE41_SHUFF(G, in2, in3)
-  }
-
-  // Process B.
-  {
-    const __m128i shuff0 = _mm_set_epi8(
-        -1, 4, -1, -1, 3, -1, -1, 2, -1, -1, 1, -1, -1, 0, -1, -1);
-    const __m128i shuff1 = _mm_set_epi8(
-        -1, -1, 9, -1, -1, 8, -1, -1, 7, -1, -1, 6, -1, -1, 5, -1);
-    const __m128i shuff2 = _mm_set_epi8(
-      15, -1, -1, 14, -1, -1, 13, -1, -1, 12, -1, -1, 11, -1, -1, 10);
-    WEBP_SSE41_SHUFF(B, in4, in5)
-  }
-
-  // OR the different channels.
-  {
-    const __m128i RG0 = _mm_or_si128(R0, G0);
-    const __m128i RG1 = _mm_or_si128(R1, G1);
-    const __m128i RG2 = _mm_or_si128(R2, G2);
-    const __m128i RG3 = _mm_or_si128(R3, G3);
-    const __m128i RG4 = _mm_or_si128(R4, G4);
-    const __m128i RG5 = _mm_or_si128(R5, G5);
-    *in0 = _mm_or_si128(RG0, B0);
-    *in1 = _mm_or_si128(RG1, B1);
-    *in2 = _mm_or_si128(RG2, B2);
-    *in3 = _mm_or_si128(RG3, B3);
-    *in4 = _mm_or_si128(RG4, B4);
-    *in5 = _mm_or_si128(RG5, B5);
-  }
-}
-
-#undef WEBP_SSE41_SHUFF
-
-// Convert four packed four-channel buffers like argbargbargbargb... into the
-// split channels aaaaa ... rrrr ... gggg .... bbbbb ......
-static WEBP_INLINE void VP8L32bToPlanar_SSE41(__m128i* const in0,
-                                              __m128i* const in1,
-                                              __m128i* const in2,
-                                              __m128i* const in3) {
-  // aaaarrrrggggbbbb
-  const __m128i shuff0 =
-      _mm_set_epi8(15, 11, 7, 3, 14, 10, 6, 2, 13, 9, 5, 1, 12, 8, 4, 0);
-  const __m128i A0 = _mm_shuffle_epi8(*in0, shuff0);
-  const __m128i A1 = _mm_shuffle_epi8(*in1, shuff0);
-  const __m128i A2 = _mm_shuffle_epi8(*in2, shuff0);
-  const __m128i A3 = _mm_shuffle_epi8(*in3, shuff0);
-  // A0A1R0R1
-  // G0G1B0B1
-  // A2A3R2R3
-  // G0G1B0B1
-  const __m128i B0 = _mm_unpacklo_epi32(A0, A1);
-  const __m128i B1 = _mm_unpackhi_epi32(A0, A1);
-  const __m128i B2 = _mm_unpacklo_epi32(A2, A3);
-  const __m128i B3 = _mm_unpackhi_epi32(A2, A3);
-  *in3 = _mm_unpacklo_epi64(B0, B2);
-  *in2 = _mm_unpackhi_epi64(B0, B2);
-  *in1 = _mm_unpacklo_epi64(B1, B3);
-  *in0 = _mm_unpackhi_epi64(B1, B3);
-}
-
-#endif  // WEBP_USE_SSE41
-
-#ifdef __cplusplus
-}  // extern "C"
-#endif
-
-#endif  // WEBP_DSP_COMMON_SSE41_H_

src/dsp/cost.c

@@ -9,8 +9,8 @@
 //
 // Author: Skal (pascal.massimino@gmail.com)
 
-#include "src/dsp/dsp.h"
-#include "src/enc/cost_enc.h"
+#include "./dsp.h"
+#include "../enc/cost_enc.h"
 
 //------------------------------------------------------------------------------
 // Boolean-cost cost table
@@ -319,7 +319,7 @@ const uint8_t VP8EncBands[16 + 1] = {
 //------------------------------------------------------------------------------
 // Mode costs
 
-static int GetResidualCost_C(int ctx0, const VP8Residual* const res) {
+static int GetResidualCost(int ctx0, const VP8Residual* const res) {
   int n = res->first;
   // should be prob[VP8EncBands[n]], but it's equivalent for n=0 or 1
   const int p0 = res->prob[n][ctx0][0];
@@ -354,8 +354,8 @@ static int GetResidualCost_C(int ctx0, const VP8Residual* const res) {
   return cost;
 }
 
-static void SetResidualCoeffs_C(const int16_t* const coeffs,
-                                VP8Residual* const res) {
+static void SetResidualCoeffs(const int16_t* const coeffs,
+                              VP8Residual* const res) {
   int n;
   res->last = -1;
   assert(res->first == 0 || coeffs[0] == 0);
@@ -377,11 +377,15 @@ VP8SetResidualCoeffsFunc VP8SetResidualCoeffs;
 extern void VP8EncDspCostInitMIPS32(void);
 extern void VP8EncDspCostInitMIPSdspR2(void);
 extern void VP8EncDspCostInitSSE2(void);
-extern void VP8EncDspCostInitNEON(void);
 
-WEBP_DSP_INIT_FUNC(VP8EncDspCostInit) {
-  VP8GetResidualCost = GetResidualCost_C;
-  VP8SetResidualCoeffs = SetResidualCoeffs_C;
+static volatile VP8CPUInfo cost_last_cpuinfo_used =
+    (VP8CPUInfo)&cost_last_cpuinfo_used;
+
+WEBP_TSAN_IGNORE_FUNCTION void VP8EncDspCostInit(void) {
+  if (cost_last_cpuinfo_used == VP8GetCPUInfo) return;
+
+  VP8GetResidualCost = GetResidualCost;
+  VP8SetResidualCoeffs = SetResidualCoeffs;
 
   // If defined, use CPUInfo() to overwrite some pointers with faster versions.
   if (VP8GetCPUInfo != NULL) {
@@ -399,13 +403,10 @@ WEBP_DSP_INIT_FUNC(VP8EncDspCostInit) {
     if (VP8GetCPUInfo(kSSE2)) {
       VP8EncDspCostInitSSE2();
     }
-#endif
-#if defined(WEBP_USE_NEON)
-    if (VP8GetCPUInfo(kNEON)) {
-      VP8EncDspCostInitNEON();
-    }
 #endif
   }
+
+  cost_last_cpuinfo_used = VP8GetCPUInfo;
 }
 
 //------------------------------------------------------------------------------

src/dsp/cost_mips32.c

@@ -9,13 +9,13 @@
 //
 // Author: Djordje Pesut (djordje.pesut@imgtec.com)
 
-#include "src/dsp/dsp.h"
+#include "./dsp.h"
 
 #if defined(WEBP_USE_MIPS32)
 
-#include "src/enc/cost_enc.h"
+#include "../enc/cost_enc.h"
 
-static int GetResidualCost_MIPS32(int ctx0, const VP8Residual* const res) {
+static int GetResidualCost(int ctx0, const VP8Residual* const res) {
   int temp0, temp1;
   int v_reg, ctx_reg;
   int n = res->first;
@@ -96,8 +96,8 @@ static int GetResidualCost_MIPS32(int ctx0, const VP8Residual* const res) {
   return cost;
 }
 
-static void SetResidualCoeffs_MIPS32(const int16_t* const coeffs,
-                                     VP8Residual* const res) {
+static void SetResidualCoeffs(const int16_t* const coeffs,
+                              VP8Residual* const res) {
   const int16_t* p_coeffs = (int16_t*)coeffs;
   int temp0, temp1, temp2, n, n1;
   assert(res->first == 0 || coeffs[0] == 0);
@@ -143,8 +143,8 @@ static void SetResidualCoeffs_MIPS32(const int16_t* const coeffs,
 extern void VP8EncDspCostInitMIPS32(void);
 
 WEBP_TSAN_IGNORE_FUNCTION void VP8EncDspCostInitMIPS32(void) {
-  VP8GetResidualCost = GetResidualCost_MIPS32;
-  VP8SetResidualCoeffs = SetResidualCoeffs_MIPS32;
+  VP8GetResidualCost = GetResidualCost;
+  VP8SetResidualCoeffs = SetResidualCoeffs;
 }
 
 #else  // !WEBP_USE_MIPS32