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Commit Graph

9 Commits

Author SHA1 Message Date
Michael Niedermayer
bf8e43083f
avformat/mccdec: Initialize and check rate.den
Fixes: Assertion c > 0 failed at libavutil/mathematics.c:61
Fixes: use-of-uninitialized-value
Fixes: 42537627/clusterfuzz-testcase-minimized-fuzzer_protocol_memory-5939605805793280

Found-by: ossfuzz
Reported-by: Kacper Michajlow
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2024-11-11 01:28:05 +01:00
Andreas Rheinhardt
4a4dcde339 avformat/internal: Move FF_FMT_INIT_CLEANUP to demux.h
and rename it to FF_INFMT_INIT_CLEANUP. This flag is demuxer-only,
so this is the more appropriate place for it.
This does not preclude adding internal flags common to both
demuxer and muxer in the future.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
2024-03-26 06:36:43 +01:00
Andreas Rheinhardt
b800327f4c avformat/avformat: Add FFInputFormat, hide internals of AVInputFormat
This commit does for AVInputFormat what commit
59c9dc82f4 did for AVOutputFormat:
It adds a new type FFInputFormat, moves all the internals
of AVInputFormat to it and adds a now reduced AVInputFormat
as first member.

This does not affect/improve extensibility of both public
or private fields for demuxers (it is still a mess due to lavd).

This is possible since 50f34172e0
(which removed the last usage of an internal field of AVInputFormat
in fftools).

(Hint: tools/probetest.c accesses the internals of FFInputFormat
as well, but given that it is a testing tool this is not considered
a problem.)

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
2024-03-07 08:53:31 -03:00
Andreas Rheinhardt
ea5bdc8893 avformat/subtitles: Deduplicate subtitles' read_(packet|seek|close)
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
2021-07-18 04:26:35 +02:00
Andreas Rheinhardt
d18eee412a avformat/mccdec: Simplify cleanup after read_header failure
by setting the FF_FMT_INIT_CLEANUP flag.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
2021-07-07 22:56:34 +02:00
Michael Niedermayer
ff05326081 avformat/mccdec: Fix overflows in num/den
Fixes: signed integer overflow: 6365816 * 1000 cannot be represented in type 'int'
Fixes: 29102/clusterfuzz-testcase-minimized-ffmpeg_dem_MCC_fuzzer-6737934184218624

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2021-06-18 18:58:25 +02:00
Andreas Rheinhardt
bc70684e74 avformat: Constify all muxer/demuxers
This is possible now that the next-API is gone.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
Signed-off-by: James Almer <jamrial@gmail.com>
2021-04-27 11:48:06 -03:00
Michael Niedermayer
6c5121379a avformat/mccdec: Use av_sat_add64() for fs
Fixes: signed integer overflow: -9223372036854775808 + -242 cannot be represented in type 'long'
Fixes: 26910/clusterfuzz-testcase-minimized-ffmpeg_dem_MCC_fuzzer-6723018395090944

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2021-03-03 16:54:20 +01:00
Paul B Mahol
71f19bf5e3 avformat: add MCC demuxer
Fixes #7680
2020-06-18 21:31:13 +02:00