Fixes ticket #9079.
Signed-off-by: NMarton Balint <cus@passwd.hu>

The VLC for the macroblock address increment uses nine bits;
yet there is no code with this length: All codes are either shorter or
longer. So one can make the table smaller without changing the amount of
codes that need more than one round of parsing.
Signed-off-by: NAndreas Rheinhardt <andreas.rheinhardt@gmail.com>

This reverts commit 6ac0e781.

The mpeg4video parser can reach code that presumes that a certain VLC
has been initialized; yet Libav did not ensure this and Libav bug #1012
[1] is about an ensuing crash.

Instead of fixing the root cause a simple check for whether said VLC
has already been initialized was added; said check is inherently racy.

The proper fix is of course to ensure that the VLC is initialized and
commit 7c76eaec already ensured this,
so there was no need to merge 6ac0e781
at all. This commit therefore reverts said commit.

[1]: https://bugzilla.libav.org/show_bug.cgi?id=1012Signed-off-by: NAndreas Rheinhardt <andreas.rheinhardt@gmail.com>

Signed-off-by: NAndreas Rheinhardt <andreas.rheinhardt@gmail.com>

1b373b41 made it a bit harder to find
out that a call to avpriv_dv_produce_packet is dead when the DV demuxer
is disabled; too hard for GCC on -O0. So simplify the check a bit.
Reviewed-by: NPeter Ross <pross@xvid.org>
Signed-off-by: NAndreas Rheinhardt <andreas.rheinhardt@gmail.com>

Defined in H.274, it shares the same value as Active Parameter Sets from the
H.265 spec.
Signed-off-by: NJames Almer <jamrial@gmail.com>

Found-by: NPaul B Mahol <onemda@gmail.com>
Signed-off-by: NMichael Niedermayer <michael@niedermayer.cc>

Fixes: signed integer overflow: 234080282628234040 * 100 cannot be represented in type 'long long'
Fixes: 26910/clusterfuzz-testcase-minimized-ffmpeg_dem_REALTEXT_fuzzer-6649867065753600

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpegSigned-off-by: NMichael Niedermayer <michael@niedermayer.cc>

Note, the value is checked a few lines later already

Fixes: signed integer overflow: -440402016 - 1879048064 cannot be represented in type 'int'
Fixes: 26910/clusterfuzz-testcase-minimized-ffmpeg_dem_NUT_fuzzer-6603876618469376

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpegSigned-off-by: NMichael Niedermayer <michael@niedermayer.cc>

Fixes: signed integer overflow: 65535 * 65535 cannot be represented in type 'int'
Fixes: 26910/clusterfuzz-testcase-minimized-ffmpeg_dem_MVI_fuzzer-6649291124899840

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpegSigned-off-by: NMichael Niedermayer <michael@niedermayer.cc>

Fixes: signed integer overflow: -9223372036853488158 - 90000000 cannot be represented in type 'long long'
Fixes: 26910/clusterfuzz-testcase-minimized-ffmpeg_dem_MPSUB_fuzzer-6696625298866176

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpegSigned-off-by: NMichael Niedermayer <michael@niedermayer.cc>

Fixes: signed integer overflow: 9223372036850000000 + 9000000 cannot be represented in type 'long long'
Fixes: 26910/clusterfuzz-testcase-minimized-ffmpeg_dem_MPSUB_fuzzer-665448017480908

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpegSigned-off-by: NMichael Niedermayer <michael@niedermayer.cc>

Suggested-by: NAnton Khirnov <anton@khirnov.net>
Signed-off-by: NMichael Niedermayer <michael@niedermayer.cc>

Fixes: out of array access
Fixes: 29440/clusterfuzz-testcase-minimized-ffmpeg_dem_KUX_fuzzer-5985279812960256.fuzz

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpegSigned-off-by: NMichael Niedermayer <michael@niedermayer.cc>

Fixes: out of array access
Fixes: 29202/clusterfuzz-testcase-minimized-ffmpeg_dem_KUX_fuzzer-5112845840809984

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpegSigned-off-by: NMichael Niedermayer <michael@niedermayer.cc>

Fixes: negation of -2147483648 cannot be represented in type 'int'; cast to an unsigned type to negate this value to itself
Fixes: 29053/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_APE_fuzzer-4814432697974784

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpegReviewed-by: NAnton Khirnov <anton@khirnov.net>
Signed-off-by: NMichael Niedermayer <michael@niedermayer.cc>

Signed-off-by: NMichael Niedermayer <michael@niedermayer.cc>

A macro that expands to a function definition might look like a
declaration, but it isn't and therefore an extra ';' at the end is
unnecessary and actually invalid (both GCC and Clang warn about this
when using -pedantic).
Signed-off-by: NAndreas Rheinhardt <andreas.rheinhardt@gmail.com>

It has been deprecated for 4 years and certain new codecs do not work
with it.

Also include AVCodecContext.refcounted_frames, as it has no effect with
the new API.

Will make wrapping it in deprecation guards simpler.

It was wrong since e03bf251.
Signed-off-by: NAndreas Rheinhardt <andreas.rheinhardt@gmail.com>

Also fix the indentation of decode_studio_vol_header while at it;
it was wrong since 177133a0.
Signed-off-by: NAndreas Rheinhardt <andreas.rheinhardt@gmail.com>

Only the fifth one is used.
Signed-off-by: NAndreas Rheinhardt <andreas.rheinhardt@gmail.com>

Signed-off-by: NAndreas Rheinhardt <andreas.rheinhardt@gmail.com>

Always unused.
Signed-off-by: NAndreas Rheinhardt <andreas.rheinhardt@gmail.com>

Never used.
Signed-off-by: NAndreas Rheinhardt <andreas.rheinhardt@gmail.com>

Forgotten in 58fc810d.
Signed-off-by: NAndreas Rheinhardt <andreas.rheinhardt@gmail.com>