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Commit Graph

7 Commits

Author SHA1 Message Date
Andreas Rheinhardt
a247ac640d avcodec: Constify AVCodecs
Given that the AVCodec.next pointer has now been removed, most of the
AVCodecs are not modified at all any more and can therefore be made
const (as this patch does); the only exceptions are the very few codecs
for external libraries that have a init_static_data callback.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
Signed-off-by: James Almer <jamrial@gmail.com>
2021-04-27 10:43:15 -03:00
Michael Niedermayer
cce37a22bc avcodec/mvha: Check remaining bits in VLC decode loop
Fixes: timeout (252sec -> 170msec)
Fixes: 20023/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_MVHA_fuzzer-5681192565473280

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2020-02-09 23:33:18 +01:00
Michael Niedermayer
c9c958051c libavcodec/mvha: Check height before applying median predictor
Fixes: out of array read
Fixes: 20495/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_MVHA_fuzzer-5711179129552896

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2020-02-09 23:33:18 +01:00
Limin Wang
93671d6755 avcodec/mvha: fix warning: variable 'size' set but not used
Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Limin Wang <lance.lmwang@gmail.com>
Signed-off-by: James Almer <jamrial@gmail.com>
2019-12-27 13:13:39 -03:00
Michael Niedermayer
e7011a0ca6 avcodec/mvha: Check remaining space when reading VLC table probabilities
Fixes: Infinite loop
Fixes: 19183/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_MVHA_fuzzer-5666216765292544

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2019-12-06 11:25:29 +01:00
Jun Zhao
2952d9c5dc lavc/mvha: Check init_get_bits8() for failure
fix potential null pointer dereference

Signed-off-by: Jun Zhao <barryjzhao@tencent.com>
2019-11-29 10:10:52 +08:00
Paul B Mahol
ed58f8475f avcodec: add mvha video decoder 2019-11-27 23:54:20 +01:00