(cherry picked from commit 18f1706f)
(cherry picked from commit 44cde38c)

Add comments to describe the sources of the constraint values expressed here,
and add some more related values which will be used in following patches.

Fix the incorrect values for SPS and PPS count (they are not the same as those
used for H.264), and remove HEVC_MAX_CU_SIZE because it is not used anywhere.

(cherry picked from commit b88da98b)

With comments describing the derivation of each value.

(cherry picked from commit aaf44146)

* commit '0429f01e':
  mkv: Export bounds and padding from spherical metadata

This commit is a noop, see bde96422Merged-by: James Almer <jamrial@gmail.com>

* commit '251849f0':
  mkv: Add support for Spherical Video elements

See 445204cdMerged-by: James Almer <jamrial@gmail.com>

* commit 'a825980f':
  mov: Export bounds and padding from spherical metadata
  spherical: Add tiled equirectangular type and projection-specific properties
  mov: Validate cubemap layout

This commit is a noop, see
ac8c72f8
1b7ffddb
022b4ea5Merged-by: James Almer <jamrial@gmail.com>

QuickTime does not require the (unknown) kuki chunk for decoding.

* commit '0f8512c4':
  mov: Validate spherical metadata version
Merged-by: James Almer <jamrial@gmail.com>

* commit '23657723':
  mov: Ignore old spherical metadata when newer version is present
Merged-by: James Almer <jamrial@gmail.com>

* commit '17adcc40':
  mov: Fix spherical metadata_source parsing

This commit is a noop, see b9f2f932Merged-by: James Almer <jamrial@gmail.com>

* commit '81bffae3':
  configure: Check for -no_weak_imports in ldflags on macOS
Merged-by: James Almer <jamrial@gmail.com>

Signed-off-by: James Almer <jamrial@gmail.com>

Fixes ticket #6740
Signed-off-by: James Almer <jamrial@gmail.com>

This has been unused for a long time, and the original purpose has been
replaced by the per-stream hwaccel_flags.
Signed-off-by: Jun Zhao <jun.zhao@intel.com>
Signed-off-by: Mark Thompson <sw@jkqxz.net>

Should fix ticket #6738
Signed-off-by: James Almer <jamrial@gmail.com>

Signed-off-by: Tom Butterworth <bangnoise@gmail.com>

Signed-off-by: Tom Butterworth <bangnoise@gmail.com>

this func encode the alpha channel of the rgba input
to an rgtc1u block
Signed-off-by: Tom Butterworth <bangnoise@gmail.com>

this func decode an rgtc1 texture and overwrite only the alpha channel
of the dest RGBA picture
Signed-off-by: Tom Butterworth <bangnoise@gmail.com>

Should be more complete than the now fallback checks.
Signed-off-by: James Almer <jamrial@gmail.com>

3% faster
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

32% faster loop
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Fixes: runtime error: signed integer overflow: 2 * -1094995530 cannot be represented in type 'int'
Fixes: 3512/clusterfuzz-testcase-minimized-4812747210489856

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

Fixes: Timeout
Fixes: 3529/clusterfuzz-testcase-5057068371279872

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

Should prevent some options from being added to cflags when they
don't exist and the compiler only warns about it.
Reviewd-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: James Almer <jamrial@gmail.com>

The library has several dependencies that vary between systems.
Their pkg-config properly lists them all.
Signed-off-by: James Almer <jamrial@gmail.com>

Debugged with the help of Reino Wijnsma.
Signed-off-by: James Almer <jamrial@gmail.com>

Two of them are missing it in their pkg-config file, so adding it
here is a workaround until said pkg-config files are fixed.

Debugged with the help of Reino Wijnsma.
Signed-off-by: James Almer <jamrial@gmail.com>

Signed-off-by: Daniel Kucera <daniel.kucera@gmail.com>
Signed-off-by: wm4 <nfxjfg@googlemail.com>

Should fix checks with static builds.
Signed-off-by: James Almer <jamrial@gmail.com>

Fixes regression since 6dfcbd80
and 734ed389.
Signed-off-by: James Almer <jamrial@gmail.com>

Correct typo in signalstats filter section and qualify description for variable
in select filter.
Signed-off-by: Gyan Doshi <gyandoshi@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Pack the data to half word before clipping.
Use immediate unsigned saturation for clip to max saving one vector register.
Signed-off-by: Kaustubh Raste <kaustubh.raste@imgtec.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Update macros to remove adds.
Signed-off-by: Kaustubh Raste <kaustubh.raste@imgtec.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Load the specific destination bytes instead of MSA load and pack.
Use immediate unsigned saturation for clip to max saving one vector register.
Signed-off-by: Kaustubh Raste <kaustubh.raste@imgtec.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Remove loops and unroll as block sizes are known.
Removed unused functions.
Signed-off-by: Kaustubh Raste <kaustubh.raste@imgtec.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Replace generic with block size specific function.
Load the specific destination bytes instead of MSA load and pack.
Signed-off-by: Kaustubh Raste <kaustubh.raste@imgtec.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

There's a bug in configure where they are not being resolved right,
so make them explicit deps for avutil for now.

(cherry-picked from libav commit 41262498)
Signed-off-by: James Almer <jamrial@gmail.com>

Signed-off-by: James Almer <jamrial@gmail.com>