* commit '131a85a1':
  utvideo: Change type of array stride parameters to ptrdiff_t
Merged-by: Clément Bœsch <u@pkh.me>

* commit '52730e0f':
  iir_filter: Change type of array stride parameters to ptrdiff_t

The merge also updates the MIPS code and drop the extra log.h include.
Merged-by: Clément Bœsch <u@pkh.me>

* commit '6b527629':
  error_resilience: Change type of array stride parameters to ptrdiff_t
Merged-by: Clément Bœsch <u@pkh.me>

* commit 'ec903058':
  configure: Simplify clock_gettime() test

nanosleep check also updated.
Merged-by: Clément Bœsch <u@pkh.me>

* commit '3aa9d37d':
  build: Fix directory dependencies of tests/pixfmts.mak target

This might not be necessary given our mkdirs in the configure, but it
probably doesn't hurt.
Merged-by: Clément Bœsch <u@pkh.me>

* commit '0e5dde73':
  configure: Fix --disable-pod2man / --disable-texi2html

This commit is a noop, we have dedicated documentation option for this
purpose.
Merged-by: Clément Bœsch <u@pkh.me>

The configure has the --disable-manpages option for this purpose, and
--disable-pod2man is currently ignored due to that. This is also
consistent with the other documentation options.

* commit 'b8c2d407':
  configure: Simplify libopenjpeg check

This commit is a noop, our libopenjpeg check is already "simpler".
Merged-by: Clément Bœsch <u@pkh.me>

* commit '2610c952':
  configure: Move initial VAAPI check to a more sensible place

This commit is a noop, see 17989dcfMerged-by: Clément Bœsch <u@pkh.me>

* commit '5b5ed92d':
  sanm: Change type of array pitch parameters to ptrdiff_t
Merged-by: Clément Bœsch <u@pkh.me>

* commit '73f5e17a':
  copy_block: Change type of array stride parameters to ptrdiff_t
Merged-by: Clément Bœsch <u@pkh.me>

* commit '21e500ba':
  svq1dec: Change type of array pitch parameters to ptrdiff_t
Merged-by: Clément Bœsch <u@pkh.me>

* commit '746c56b7':
  indeo: Change type of array pitch parameters to ptrdiff_t
Merged-by: Clément Bœsch <u@pkh.me>

* commit '4fb311c8':
  Drop memalign hack

Merged, as this may indeed be uneeded since
46e3936f.
Merged-by: Clément Bœsch <u@pkh.me>

* commit 'f01f7a78':
  hwcontext_dxva2: use the special UC copy for downloading frames
Merged-by: Clément Bœsch <u@pkh.me>

* commit 'd7bc52bf':
  imgutils: add a function for copying image data from GPU mapped memory
Merged-by: Clément Bœsch <u@pkh.me>

* commit '24da4303':
  Changelog: mark the release 12 branch

This commit is a noop.
Merged-by: Clément Bœsch <u@pkh.me>

* commit '851960f6':
  lavc: Remove old vaapi decode infrastructure
  avconv_vaapi: Convert to use hw_frames_ctx only
  vaapi_mpeg4: Convert to use the new VAAPI hwaccel code
  vaapi_vc1: Convert to use the new VAAPI hwaccel code
  vaapi_mpeg2: Convert to use the new VAAPI hwaccel code
  vaapi_h264: Convert to use the new VAAPI hwaccel code
  lavc: Rewrite VAAPI decode infrastructure

This merge is a noop, these commits have already been cherry-picked.
Merged-by: Clément Bœsch <u@pkh.me>

* commit '72eba655':
  wmavoice: Simplify GetBitContext initialization

This commit is a noop. We don't have that code anymore since
3deb4b54.
Merged-by: Clément Bœsch <u@pkh.me>

* commit '80fc75d5':
  Changelog: Mention mov with multiple stsd
Merged-by: Clément Bœsch <u@pkh.me>

* commit '728e80cd':
  High Definition Compatible Digital (HDCD) decoder filter, using libhdcd

This commit is a noop, we have that code natively.
Merged-by: Clément Bœsch <u@pkh.me>

* commit '95f80293':
  avprobe: Fix memory leak

This commit is a noop, ffprobe is not affected.
Merged-by: Clément Bœsch <u@pkh.me>

* commit '8db804e8':
  mov: Remove old b-frame/video delay heuristic

This commit is a noop, see 425be3c8Merged-by: Clément Bœsch <u@pkh.me>

* commit 'eb96505b':
  mov: Remove ancient heuristic hack

This commit is a noop, see 04f8d312Merged-by: Clément Bœsch <u@pkh.me>

Reduce diff with Libav.

Test the pixel format querying within libswscale.

Fixes invalid shift
Fixes: 870/clusterfuzz-testcase-5649105424482304

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

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

Fixes timeout with 847/clusterfuzz-testcase-5291877358108672
Fixes timeout with 850/clusterfuzz-testcase-5721296509861888

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

avcodec/h264_direct: Fix runtime error: signed integer overflow: -9 - 2147483647 cannot be represented in type 'int'

Fixes: 864/clusterfuzz-testcase-4774385942528000

See: [FFmpeg-devel] [PATCH 1/2] avcodec/h264_direct: Fix runtime error: signed integer overflow: 2147483647 - -14133 cannot be represented in type 'int'
See: [FFmpeg-devel] [PATCH 2/2] avcodec/h264_direct: Fix runtime error: signed integer overflow: -9 - 2147483647 cannot be represented in type 'int'

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

Fixes: 861/clusterfuzz-testcase-5688284384591872

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

This work is sponsored by, and copyright, Google.

This avoids loading and calculating coefficients that we know will
be zero, and avoids filling the temp buffer with zeros in places
where we know the second pass won't read.

This gives a pretty substantial speedup for the smaller subpartitions.

The code size increases from 21512 bytes to 31400 bytes.

The idct16/32_end macros are moved above the individual functions; the
instructions themselves are unchanged, but since new functions are added
at the same place where the code is moved from, the diff looks rather
messy.

Before:
vp9_inv_dct_dct_16x16_sub1_add_10_neon:     284.6
vp9_inv_dct_dct_16x16_sub2_add_10_neon:    1902.7
vp9_inv_dct_dct_16x16_sub4_add_10_neon:    1903.0
vp9_inv_dct_dct_16x16_sub8_add_10_neon:    2201.1
vp9_inv_dct_dct_16x16_sub12_add_10_neon:   2510.0
vp9_inv_dct_dct_16x16_sub16_add_10_neon:   2821.3
vp9_inv_dct_dct_32x32_sub1_add_10_neon:    1011.6
vp9_inv_dct_dct_32x32_sub2_add_10_neon:    9716.5
vp9_inv_dct_dct_32x32_sub4_add_10_neon:    9704.9
vp9_inv_dct_dct_32x32_sub8_add_10_neon:   10641.7
vp9_inv_dct_dct_32x32_sub12_add_10_neon:  11555.7
vp9_inv_dct_dct_32x32_sub16_add_10_neon:  12499.8
vp9_inv_dct_dct_32x32_sub20_add_10_neon:  13403.7
vp9_inv_dct_dct_32x32_sub24_add_10_neon:  14335.8
vp9_inv_dct_dct_32x32_sub28_add_10_neon:  15253.6
vp9_inv_dct_dct_32x32_sub32_add_10_neon:  16179.5

After:
vp9_inv_dct_dct_16x16_sub1_add_10_neon:     282.8
vp9_inv_dct_dct_16x16_sub2_add_10_neon:    1142.4
vp9_inv_dct_dct_16x16_sub4_add_10_neon:    1139.0
vp9_inv_dct_dct_16x16_sub8_add_10_neon:    1772.9
vp9_inv_dct_dct_16x16_sub12_add_10_neon:   2515.2
vp9_inv_dct_dct_16x16_sub16_add_10_neon:   2823.5
vp9_inv_dct_dct_32x32_sub1_add_10_neon:    1012.7
vp9_inv_dct_dct_32x32_sub2_add_10_neon:    6944.4
vp9_inv_dct_dct_32x32_sub4_add_10_neon:    6944.2
vp9_inv_dct_dct_32x32_sub8_add_10_neon:    7609.8
vp9_inv_dct_dct_32x32_sub12_add_10_neon:   9953.4
vp9_inv_dct_dct_32x32_sub16_add_10_neon:  10770.1
vp9_inv_dct_dct_32x32_sub20_add_10_neon:  13418.8
vp9_inv_dct_dct_32x32_sub24_add_10_neon:  14330.7
vp9_inv_dct_dct_32x32_sub28_add_10_neon:  15257.1
vp9_inv_dct_dct_32x32_sub32_add_10_neon:  16190.6
Signed-off-by: Martin Storsjö <martin@martin.st>