Fixes: runtime error: signed integer overflow: 2147483647 + 1 cannot be represented in type 'int'
Fixes: 3361/clusterfuzz-testcase-minimized-5065842955911168

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit d00fc952b6)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Fixes: 1559/clusterfuzz-testcase-minimized-5048096079740928
Fixes: 1560/clusterfuzz-testcase-minimized-6011037813833728

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 8630b2cd36)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 3a4d387195)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Fixes deallocation of corrupted pointer
Fixes: 343dfbe142a38b521ed069dc4ea7c03b/signal_sigsegv_421427_4074_ffb11959610278cd40dbc153464aa254.avi
No releases affected

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit e04126072e)

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

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit a8b254e436)

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

Fixes assertion failure
Fixes: 07ec1fc3c1cbf2d3edcd7d9b52ca156c/asan_heap-oob_13624c5_491_ecd4720a03e697ba750b235690656c8f.avi

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 5745cf799a)

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

Fixes deadlock
Fixes Ticket4932

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 5063a18f56)

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

Fixes Ticket4931

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 4c2d4e8700)

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

Fixes: invalid_read.nut
Found-by: Paul B Mahol <onemda@gmail.com>

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 2d221d9e06)

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

Forwards the error code, avoids potential integer overflow

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 10bbf6cf62)

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

Fixes hang.nut

Found-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit b2955b6c5a)

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

Fix segfault with too large slice_count
Fixes Ticket4879

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit aa6c43f3fd)

Conflicts:
	libavcodec/ffv1enc.c
	libavcodec/ffv1.c

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit d43cd6b08e)

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Such changes are neither allowed nor supported

Found-by: ami_stuff
Bug-Id: CVE-2013-7020
CC: libav-stable@libav.org
Signed-off-by: Anton Khirnov <anton@khirnov.net>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Added libavutil/timer.h include to all files with {START,STOP}_TIMER.

0-0.7% improved compression

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

about 1% better compression

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

CC: libav-stable@libav.org
Reported-by: debian/726189

For codecs where decoding of a whole plane can simply
be skipped, we should offer applications to not decode
alpha for better performance (ca. 30% less CPU usage
and 40% reduced memory bandwidth).
It also means applications do not need to implement support
(even if it is rather simple) for YUVA formats in order to be
able to play these files.

Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>

Signed-off-by: Paul B Mahol <onemda@gmail.com>

Fixes crash with carefuly designed files.

Signed-off-by: Paul B Mahol <onemda@gmail.com>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

This moves some allocations to init, reducing possible failure modes in update.
Always copies from the previous context instead of just during init

Fixes Ticket2923

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Such changes are not allowed nor supported

Fixes Ticket2906

Found-by: ami_stuff
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

the version is 1.3.4 which makes 4 micro and not minor

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Only read the information for old ffv1, level/version 3 saves
the information in the bitstream.
Fixes a part of ticket #2190.

Signed-off-by: Carl Eugen Hoyos <cehoyos@ag.or.at>

Signed-off-by: Paul B Mahol <onemda@gmail.com>

Fixes Ticket2589

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

This is about 20-30% faster than slice threading

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

CODEC_CAP_FRAME_THREADS is not added yet because that would
unconditionally enable it, breaking gop>1 files.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Paul B Mahol <onemda@gmail.com>

Coccinelle profile used:

  @@
  expression r, ctx, f, loglevel, str, flags;
  @@

  -if ((r = ff_get_buffer(ctx, f, flags)) < 0) {
  -    av_log(ctx, loglevel, str);
  -    return r;
  -}
  +if ((r = ff_get_buffer(ctx, f, flags)) < 0)
  +    return r;

  @@
  expression r, ctx, f, loglevel, str;
  @@

  -if ((r = ff_reget_buffer(ctx, f)) < 0) {
  -    av_log(ctx, loglevel, str);
  -    return r;
  -}
  +if ((r = ff_reget_buffer(ctx, f)) < 0)
  +    return r;

  @@
  expression r, ctx, f, loglevel, str, flags;
  @@

  -if ((r = ff_thread_get_buffer(ctx, f, flags)) < 0) {
  -    av_log(ctx, loglevel, str);
  -    return r;
  -}
  +if ((r = ff_thread_get_buffer(ctx, f, flags)) < 0)
  +    return r;

...along with some manual patches for the remaining ones.

It got broken in 0f13cd3187.

CC:libav-stable@libav.org