large values of x_add and y_add may rollover an int causing a later
assertion to fail in WebPRescalerExportRow due to fxy_scale incorrectly
being set to 0.
fixes:
src/dsp/rescaler.c:178: void WebPRescalerExportRow(WebPRescaler *const):
Assertion `wrk->src_height == wrk->dst_height && wrk->x_add == 1'
failed.
Bug: chromium:1196480
Change-Id: I2c00f015d61a1257033d8edb1edd4d060d6878b7
this matches the description in WebPDecoderOptions and prevents a
mismatch between the user supplied options and the ones used by io.
Bug: chromium:1196773, chromium:1196775, chromium:1196480
Change-Id: I3603b806884cfc6969b093d06b7980b0cc13199b
this matches the description in WebPDecoderOptions and prevents a
mismatch between the user supplied options and the ones used by io.
Bug: chromium:1196480
Change-Id: Id464f999d737078078f9d21afe25b349317f5ab4
and avoid integer overflow in test of x/width and y/height parameters
against the image width/height
Bug: chromium:1196778, chromium:1196777, chromium:1196480
Change-Id: I7b8f1f4dbebfe073b1ba260b8317979488655dcc
With palette+predictors, cross-color was forced (because of predictors).
No need for cross-color for palettes as R/B==0.
This saves 10 bytes per image that uses palette+predictors.
Change-Id: If2184d16cdabe1e8498009062284ad3e37ef1342
if bypass_filtering was set to 1 in the user provided options it
shouldn't be reset in the use_scaling pass even if the image satisfies
the scaling requirements.
Change-Id: I036029907886acb63748872d5f8763954a7c607b
VerticalUnfilter_SSE2 has long been disabled due to a crash in an
Android emulator that hasn't reproduced elsewhere (crbug.com/654974).
this synchronizes the code for now to avoid needing to locally edit the
file on import.
Bug: 1141126
Change-Id: Ib61aeab93caaff1759606566b9e499eaac1576cf
this function produces different results from the C code due to
use of double/float resulting in output differences when compared to
-noasm.
Bug: webp:499
Change-Id: Ia039b168c0a66da723fb434656657ba1948db8ae
It's explicitly safe (and recommended!) to plug external data into
the pic->y/u/v/argb fields. They are guaranteed to be preserved
by the encoding process if no conversion is needed.
Change-Id: I325ca41a6a834f7f028431c605dddef67e9542cc
- Add `-msimd128` to flags to actually enable WebAssembly SIMD
when performing SIMD detection. It's currently required in
addition to `-msse*` / `-mfpu=neon` flags which only perform
translation of corresponding intrinsics to Wasm SIMD ones.
See a discussion at emscripten-core/emscripten#12714 for
automating this and making easier in the future.
- Remove compilation branch that prevented definitions of
`WEBP_USE_SSE` and `WEBP_USE_NEON` on Emscripten even when
SIMD support was detected at compile-time.
- Add an implementation of `VP8GetCPUInfo` for Emscripten which
uses static `WEBP_USE_*` flags to determine if a corresponding
SIMD instruction is supported. This is because Wasm doesn't
have proper feature detection (yet) and requires making separate
build for SIMD version anyway.
Change-Id: I77592081b91fd0e4cbc9242f5600ce905184f506
The offset *can* be negative, but the sanitizer reports strange
address behaviour when row_offset is unsigned size_t.
For safety, use int64_t instead (probably overkill. int32_t is probably ok).
Change-Id: I1bd424bfdb5447b3839f40679581d6bdea075320
After ParseAnimationFrame() calls StoreFrame(), check if StoreFrame() reads
more than anmf_payload_size bytes from dmux->mem_. Treat that as PARSE_ERROR.
Change-Id: I0d03885c19d32792af78de7bed1a944ca01f1dc6
with WebPReplaceTransparentPixels() function signature:
src\enc\picture_tools_enc.c(86): warning C4028: formal parameter 1
different from declaration
Change-Id: I0140d61b0dfebcbb4189707e8f2f4b1af802a4d7
this provides stronger synchronization when pthreads are available as
was done in 'd77bf512 add WEBP_DSP_INIT / WEBP_DSP_INIT_FUNC' for the
other init functions.
Change-Id: I2ffe4e24454d276c2411ece34dca38d23d4756d5
Fix another pessimization found by the pingo image compressor.
Refactoring is necessary to make LZ77 computation
common to cache or no-cache analysis.
Slower by 1.7x instead of 2x
Change-Id: I396701ea6e88543dbfe9471eb552877f6c8ce1e3
qmin / qmax are now using the pad[] spot at the end of the struct,
and we don't need to bump the ABI major number.
Change-Id: I41adcaf1600b29a5a05c9fe380bfd977cf425124
this was not giving a good alpha value, making the method 5/6 a little
blurrier than method 4 (!).
Change-Id: I69b9890dea21499c1af1753e87d9f7adf8b433de
