Chiebot-Mirror/FFmpeg - FFmpeg - Gitea: Git with a cup of tea

Author	SHA1	Message	Date
Leo Izen	c4be080e65	avcodec/jpegxl_parser: fix parsing sequences of extremely small files This patch allows the JXL parser to parse sequences of extremely small files concatenated together. (e.g. smaller than the parser buffer) Signed-off-by: Leo Izen <leo.izen@gmail.com>	1 year ago
Leo Izen	019b3ea65a	avcodec/jpegxl_parse{,r}: use correct ISOBMFF extended size location According to ISO/IEC 14996-12, size == 1 means a 64-bit extended-size field occurs after the 32-bit box type, not before. This fix should allow correct parsing of JXL files with extended-size boxes. Signed-off-by: Leo Izen <leo.izen@gmail.com>	1 year ago
Leo Izen	bf814387f4	avcodec/jpegxl_parser: fix OOB read regression In `f7ac3512f5` the size of the dynamically allocated buffer was shrunk, but it was made too small for very small alphabet sizes. This patch restores the size to prevent an OOB read. Reported-by: Cole Dilorenzo <coolkingcole@gmail.com> Signed-off-by: Leo Izen <leo.izen@gmail.com>	1 year ago
Leo Izen	f7ac3512f5	avcodec/jpegxl_parser: fix various memory issues The spec caps the prefix alphabet size to 32768 (i.e. 1 << 15) so we should check for that and reject alphabets that are too large, in order to prevent over-allocating. Additionally, there's no need to allocate buffers that are as large as the maximum alphabet size as these aren't stack-allocated, they're heap allocated and thus can be variable size. Added an overflow check as well, which fixes leaking the buffer, and capping the alphabet size fixes two potential overruns as well. Fixes: out of array access Fixes: 62089/clusterfuzz-testcase-minimized-ffmpeg_DEMUXER_fuzzer- 5437089094959104.fuzz Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Found-by: Hardik Shah of Vehere (Dawn Treaders team) Co-authored-by: Michael Niedermayer <michael@niedermayer.cc> Signed-off-by: Leo Izen <leo.izen@gmail.com>	1 year ago
Leo Izen	ec74553205	avcodec/jpegxl_parser: add some icc profile checks This patch will cause the parser to abort if it detects an icc profile with an invalid size. This is particularly important if the icc profile is entropy-encoded with zero bits per symbol, as it can prevent a seemingly infinite loop during parsing. Fixes: infinite loop Fixes: 62374/clusterfuzz-testcase-minimized-ffmpeg_IO_DEMUXER_fuzzer -5551878085410816 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Reported-by: Michael Niedermayer <michael@niedermayer.cc> Signed-off-by: Leo Izen <leo.izen@gmail.com>	1 year ago
Andreas Rheinhardt	945760b347	avcodec/jpegxl_parser: Remove unused function Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>	1 year ago
Michael Niedermayer	ca09d8a0dc	avcodec/jpegxl_parser: Check for ctx->skip overflow Fixes: out of array access Fixes: 62113/clusterfuzz-testcase-minimized-ffmpeg_DEMUXER_fuzzer-5025082076168192 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>	1 year ago
Andreas Rheinhardt	9cdf82c2c2	avcodec/vlc: Use proper namespace Therefore use a proper prefix for this API, e.g. ff_init_vlc_sparse -> ff_vlc_init_sparse ff_free_vlc -> ff_vlc_free INIT_VLC_LE -> VLC_INIT_LE INIT_VLC_USE_NEW_STATIC -> VLC_INIT_USE_STATIC (The ancient INIT_VLC_USE_STATIC has been removed in `595324e143`, so that the NEW has been dropped.) Finally, reorder the flags and change their values accordingly. Reviewed-by: Michael Niedermayer <michael@niedermayer.cc> Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>	1 year ago
Tong Wu	a25a60d763	avcodec/jpegxl_parser: fix a compile error Compiler: MSVC 14.35.32215 Error type: error C2099: initializer is not a constant Related commit: `0c0dd23` avcodec/jpegxl_parser: add JPEG XL parser Signed-off-by: Tong Wu <tong1.wu@intel.com> Signed-off-by: James Almer <jamrial@gmail.com>	1 year ago
Leo Izen	0c0dd23fe1	avcodec/jpegxl_parser: add JPEG XL parser Add a full parser to libavcodec for AV_CODEC_ID_JPEGXL. It finds the end of the stream in order to packetize the codec, and it looks at the headers to set preliminary information like dimensions and pixel format. Note that much of this code is duplicated from avformat/jpegxl_probe.c, but that code will be removed and call this instead in the next commit. Signed-off-by: Leo Izen <leo.izen@gmail.com>	1 year ago