When histograms are empty, it is easy to add them.
They should also not be considered when merging histograms
(it is a waste of CPU).
This does not change the compression performance,
just the speed.
Change-Id: I42c721ca0f9c5ea067e73b792aa3db6d5e71d01f
Define macros in examples/unicode.h to use Unicode argv
on Windows. Keep char everywhere on Unix since it handles
UTF-8 without any change.
Impact:
- All fopen () and SHCreateStreamOnFile(),
- All fprintf() printing file paths,
- All strcmp() used with "-",
- File path parsing,
- Gif reading.
Concerned executables from examples/ and extras/:
anim_diff, anim_dump, vwebp, vwebp_sdl,
cwebp, dwebp, gif2webp, img2webp,
webpmux, webpinfo, webp_quality, get_disto
When compiled on Windows with Unicode enabled, webpmux and
img2webp will not work when used with an argument file and
will print "Reading arguments from a file is a feature
unavailable with Unicode binaries."
BUG=webp:398
Change-Id: Ic55d222a3ce1a715f9c4cce57ecbe2705d5ce317
GIFDisplayError() is already defined exactly the same way
in gifdec. Remove it from anim_util.c and add dependency.
Change-Id: Iec01b41c44d0b61b3a279b8cd754d9917d64f804
https://github.com/cheshirekow/cmake_format
A complete row of # is replaced by only one,
so add a space after the first one to keep it.
Change-Id: I367749353a555c89c717f1939220699e43ecab2c
To be compiled with Visual Studio on Windows through CMake.
Targets are get_disto, vwebp_sdl, webp_quality.
Change-Id: Idec1e19b61b6a661011effee42f7440264afd3ed
Instead of unsetting WEBP_BUILD_GIF2WEBP,
disable it to keep it displayed in ccmake.
Disable WEBP_BUILD_GIF2WEBP before it's tested.
Do the same for WEBP_BUILD_ANIM_UTILS.
Change-Id: I91920814fbda4825ced9a801bb005f8d44bfe09c
Fix issue where color data is discarded in fully transparent
areas when -resize -exact.
BUG=webp:397
Change-Id: I58ce8d5ae172d5d0f0138e07c7df3a3c6cbd0019
after:
bc5092b1 pngdec: set memory functions
png_alloc_size_t was added in 1.4 use png_size_t in earlier versions
Change-Id: If65ac1c501e2d497b1be480095bf21f06ea7026a
use png_create_read_struct_2 to set a malloc function allowing the code
to fail on large allocations while fuzzing
Change-Id: Iaca1b93ecc6570067708f3ae2db07fbca74386ee
The graphical bug happens when there is a frame disposed to background
color, followed by another frame that does not blend, and their areas
don't fully overlap. Only the previous frame clears its part of the
viewport. The fix consists in clearing the screen for the previous and
the current frame if needed.
Change-Id: I3425cf7297f0c7b2cf13a3a61b517cc0b1c031d8
Option -usebgcolor may be used to display ANIM background color (or white if no ANIM chunk), blended on top of checkerboard. By default this is disabled (old behavior) to easily see transparent areas. Spec says that "background color MAY be used", so it's an option.
Key b may be pressed to toggle ANIM background color display. There are visual artifacts (leftovers) when toggling during an animation. This is already the case for rescaling, toggling info etc. (fixing it implies storing viewport render or rendering whole animation from start till current frame).
BUG=webp:394
Change-Id: If9ab898b2eac77226f30f062d522f9861789ef8f
Container spec indicates that background color is written
in BGRA byte order, but glClearColor() parameters are RGBA.
Anyway the checkerboard is displayed right after glClear()
calls so it replaces background color.
In response to webp-discuss/TkLHALGaHaM
Change-Id: Ief5435fadfd6a422b881a9dc240b5e8dc6546e19
We should be using 'floor' when doing the final divide.
-> new MACRO is MULT_FIX_FLOOR()
XXX*** Mips code is DISABLED for now ***XXX
I'll update and re-enable it in a later
patch, since this code needs some refactoring first.
BUG=oss-fuzz:9179
Change-Id: Ic0693cdca4e71f5beab1029475e35c4d06b12d13
* Assert chunklist
* fix potential memory leak and
* fix null pointer access
There should not be several alpha_ or img_ chunks in SynthesizeBitstream. Use ChunkListDelete in MuxImageRelease to be safe.
A null pointer accessed in WebPMuxPushFrame triggered a harmless runtime error.
Change-Id: I3027f8752093652bd41f55e667d041c0de77ab6e
The chunk list only has two operations: append and set
to one element. The two operations are split and the append
one is sped up by storing the last element.
Corrupted data could make a very long list to search through.
BUG=oss-fuzz:9190
Change-Id: I1aa813ca629df29efaa3b46dbd4c4c42dbeaa34c
