a preparation for Reference Picture Resampling

Signed-off-by: Zhao Zhili <zhilizhao@tencent.com>

Matches other hwaccels.

Tested-by: Tong Wu <tong1.wu@intel.com>
Signed-off-by: oltolm <oleg.tolmatcev@gmail.com>

Also use loop scope for iterators while just at it.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>

Because of ffio_ensure_seekback() a seek error normally should only happen if
the end of file is reached during checking for the junk run-in. Also use proper
error code.
Signed-off-by: Marton Balint <cus@passwd.hu>

We are protecting the checked buffer with ffio_ensure_seekback(), so if the
inner check fails with a seek error, that likely means the end of file was
reached when checking for the next frame. This could also be the result of a
wrongly guessed (larger than normal) frame size, so let's continue the loop
instead of breaking out early. It will end sooner or later anyway.
Signed-off-by: Marton Balint <cus@passwd.hu>

Otherwise the subsequent ffio_ensure_seekback calls destroy the buffer of the
earlier. The worst case ~66kB seekback is so small it is easier to request it
entirely.

Fixes ticket #10837, a regression since
0d17f522.
Signed-off-by: Marton Balint <cus@passwd.hu>

Signed-off-by: LuMingYin <lumingyindetect@163.com>
Signed-off-by: Zhao Zhili <zhilizhao@tencent.com>

Signed-off-by: LuMingYin <lumingyindetect@163.com>
Signed-off-by: Zhao Zhili <zhilizhao@tencent.com>

Signed-off-by: LuMingYin <lumingyindetect@163.com>
Reviewed-by: Steven Liu <lq@chinaffmpeg.org>
Signed-off-by: Zhao Zhili <zhilizhao@tencent.com>

Reviewed-by: Nuo Mi <nuomi2021@gmail.com>
Signed-off-by: James Almer <jamrial@gmail.com>

Should fix many Coverity false positives, namely #1457947-#1457994
as well as #1461195-#146210.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>

Fixes Coverity issue #1516957.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>

Do this by attaching the FilterGraph directly to more permanent
storage from which it will be automatically freed.
Fixes Coverity issue #1596533.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>

Fixes Coverity issue #1591795.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>

This might also help Coverity with issue #1596532.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>

Reviewed-by: epirat07@gmail.com
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>

Reviewed-by: epirat07@gmail.com
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>

This is in preparation for using av_dict_iterate().
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>

These functions do nothing useful when used with a non-ancient
version of openssl (namely 1.1.0 or above).
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>

Its existence is a remnant of (libavcodec's) lock-manager API
which has been removed in a04c2c70.
There is no need to use the same lock for avisynth, chromaprint
or tls, so switch to ordinary static mutexes instead.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>

instead of avpriv_adts_header_parse(). Using the former avoids
an indirection.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>

Most users of ff_adts_header_parse() don't already have
an opened GetBitContext for the header, so add a convenience
function for them.
Also use a forward declaration of GetBitContext in adts_header.h
as this avoids (implicit) inclusion of get_bits.h in some of
the users that now no longer use a GetBitContext of their own.
Reviewed-by: James Almer <jamrial@gmail.com>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>

Also remove the (unused) AAC_AC3_PARSE_ERROR_CHANNEL_CFG while at it;
furthermore, fix the documentation of ff_ac3_parse_header()
and (ff|avpriv)_adts_header_parse().
Reviewed-by: Andrew Sayers <ffmpeg-devel@pileofstuff.org>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>

The documentation of av_adts_header_parse() does not require
the buffer to be padded at all.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>