c893dcce31
avcodec/jpeg2000: Fix undefined behaviour in left shift operations
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Signed-off-by: Pierre-Anthony Lemieux <pal@palemieux.com >
2024-12-07 15:41:30 -08:00
82467b635e
avcodec/jpeg2000: Improve FF_DWT97_INT to pass ISO/IEC 15444-4 conformance tests
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Fixes https://trac.ffmpeg.org/ticket/10123
Signed-off-by: Pierre-Anthony Lemieux <pal@palemieux.com >
2024-11-08 08:30:07 -08:00
d88a988d3d
avcodec/jpeg2000dec: Fix HT decoding
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Fixes incorrect handling of MAGB_P value in Ccap15.
Fixes bugs in HT block decoding.
Signed-off-by: Pierre-Anthony Lemieux <pal@palemieux.com >
2024-08-10 09:22:51 -07:00
48b14732d8
avcodec/jpeg2000dec: Add support for placeholder passes
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See Rec. ITU-T T.814 | ISO/IEC 15444-15, Annex B.
Signed-off-by: Pierre-Anthony Lemieux <pal@palemieux.com >
2024-08-10 09:22:44 -07:00
249c66bb22
avcodec/jpeg2000dec: fix HT block decoder
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Addresses https://trac.ffmpeg.org/ticket/10905
Co-authored-by: Osamu Watanabe <owatanab@es.takushoku-u.ac.jp >
Signed-off-by: Pierre-Anthony Lemieux <pal@palemieux.com >
2024-05-30 21:30:52 -07:00
7b7eea8e63
avcodec/jpeg2000htdec: warn about non zero roi shift
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Suggested-by: Tomas Härdin <git@haerdin.se >
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc >
2024-04-01 18:17:27 +02:00
790f793844
avutil/common: Don't auto-include mem.h
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There are lots of files that don't need it: The number of object
files that actually need it went down from 2011 to 884 here.
Keep it for external users in order to not cause breakages.
Also improve the other headers a bit while just at it.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com >
2024-03-31 00:08:43 +01:00
a1384b4e86
avcodec/jpeg2000htdec: check if block decoding will exceed internal precision
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Intended to replace https://patchwork.ffmpeg.org/project/ffmpeg/patch/20230802000135.26482-3-michael@niedermayer.cc/
with a more accurate block decoding magnitude bound.
Fixes: 62433/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_JPEG2000_fuzzer-5828618092937216
Fixes: 58299/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_JPEG2000_fuzzer-5828618092937216
Previous-version-reviewed-by: Tomas Härdin <git@haerdin.se >
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc >
2023-12-14 23:53:10 +01:00
9549712056
avcodec/jpeg2000htdec: Consolidate jpeg2000 spec bits in jpeg2000_bitbuf_refill_backwards()
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Code should make more sense now
Fixes: out of array access
Fixes: 58299/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_JPEG2000_fuzzer-6627570448465920
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Reviewed-by: Pierre-Anthony Lemieux <pal@sandflow.com >
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc >
2023-08-05 19:52:00 +02:00
044ab532fc
avcodec/jpeg2000htdec: Avoid freeing uninitialized pointers in ff_jpeg2000_decode_htj2k()
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Fixes: freeing of uninitialized pointers
Fixes: part of 58299
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Reviewed-by: Tomas Härdin <git@haerdin.se >
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc >
2023-08-04 00:06:26 +02:00
043a9d09cb
avcodec/jpeg2000htdec: Check for invalid magref length.
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Fixes: shift exponent -8 is negative
Fixes: 58328/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_JPEG2000_fuzzer-6007789196804096
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc >
2023-06-23 02:06:45 +02:00
b9c42cdf8d
avcodec/jpeg2000dec: add support for HTJ2K block decoding
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Signed-off-by: Pierre-Anthony Lemieux <pal@palemieux.com >
2023-04-22 15:57:40 -07:00
Osamu Watanabe