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

* commit '2940e196':
  vaapi_h265: cu_qp_delta should not be used in constant-QP mode
Merged-by: Clément Bœsch <clement@stupeflix.com>

* commit '02fa1ad9':
  vaapi_h264: Add source version identifier as unregistered SEI
Merged-by: Clément Bœsch <clement@stupeflix.com>

* commit '48e2967c':
  vaapi_h264: Add support for SEI messages
Merged-by: Clément Bœsch <clement@stupeflix.com>

* commit '19d7667a':
  vaapi_encode: Add support for writing arbitrary additional packed headers
Merged-by: Clément Bœsch <clement@stupeflix.com>

* commit '081961f8':
  vaapi_h264: Add support for VUI parameters
Merged-by: Clément Bœsch <clement@stupeflix.com>

* commit '2e4a7bd5':
  h264: drop unused H264Context.gb
Merged-by: Clément Bœsch <clement@stupeflix.com>

* commit '4f81f8db':
  Drop unnecessary golomb.h #includes
Merged-by: Clément Bœsch <clement@stupeflix.com>

* commit '197ae68e':
  Drop unnecessary unary.h #includes
Merged-by: Clément Bœsch <clement@stupeflix.com>

* commit '6ac52f05':
  dvbsub_parser: Add missing mem.h #include
Merged-by: Clément Bœsch <clement@stupeflix.com>

* commit '81f769fa':
  gsm: Move requant_tab table to the gsm tables file
Merged-by: Clément Bœsch <clement@stupeflix.com>

* commit '42dc2143':
  mpc: Drop unused GetBitContext context member
Merged-by: Clément Bœsch <clement@stupeflix.com>

* commit '85b8403c':
  svq1enc: Drop unused GetBitContext context member
Merged-by: Clément Bœsch <clement@stupeflix.com>

* commit '6d8fd614':
  vorbis: Kill some pointless debug code
Merged-by: Clément Bœsch <clement@stupeflix.com>

* commit '59c6509d':
  mss2: Drop a silly assert
Merged-by: Clément Bœsch <clement@stupeflix.com>

This was mentioned to be in ae753dbd but
actually wasn't.

* commit 'b6686629':
  get_bits: Move BITSTREAM_READER_LE definition before all relevant #includes

The merge commit also includes changes for libavcodec/interplayacm.c and
libavcodec/truemotion2rt.c
Merged-by: Clément Bœsch <clement@stupeflix.com>

* commit '09c4e5c5':
  indeo2: Drop disabled big-endian ir2_codes table
Merged-by: Clément Bœsch <clement@stupeflix.com>

* commit 'b7f98659':
  Remove unnecessary get_bits.h #includes
Merged-by: Clément Bœsch <clement@stupeflix.com>

* commit '2a48a75a':
  sgirledec: simplify, no need to use reget buffer

This commit is a noop, see ccc3f4e7Merged-by: Clément Bœsch <clement@stupeflix.com>

* commit '6e2ad28c':
  aic: add frame threading support

This commit is a noop, see 8e069eb5Merged-by: Clément Bœsch <clement@stupeflix.com>

* commit 'c3ed259e':
  fate: Move Canopus decoder tests to a separate file
Merged-by: Clément Bœsch <clement@stupeflix.com>

Fixes a regression introduced by 0cd5e281.

Fixes integer overflow
Fixes: poc.mp4
Found-by: ajax secure <ajax4sec@hotmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

the result of ffmpeg decoding is binary exact with the yuv output of
official decoder (dwebp)
Signed-off-by: James Almer <jamrial@gmail.com>

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

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

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

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

* commit '20a8c78c':
  avconv: Do not copy extradata if source buffer is empty

This commit is a noop, see 4d02dfbdMerged-by: Clément Bœsch <u@pkh.me>

* commit '38f99017':
  vp9: Return the correct size when decoding a superframe

This commit is a noop, see c2f3715cMerged-by: Clément Bœsch <u@pkh.me>

* commit 'b2d5d6a7':
  build: Only enable symbol reduction if the compiler does proper DCE
Merged-by: Clément Bœsch <u@pkh.me>

* commit 'c5fd4b50':
  build: Simplify postprocessing of linker version script files
Merged-by: Clément Bœsch <u@pkh.me>

P1, P2, and P3 are respectively the text versions of PBM, PGM and PPM
files.

We can not obtain the buffer size using av_imgage_get_buffer_size() as
every pixel in the picture will occupy a random size between 16 and 32
bits ("4 " and "231 " are such example).

Ideally, we could look for the next header (or EOF) in the bytestream,
but this commit is meant to fix a decoding regression introduced by
48ac4532.

Fix Ticket #5670

* commit '535a742c':
  build: Change structure of the linker version script templates
Merged-by: Matthieu Bouron <matthieu.bouron@stupeflix.com>

Signed-off-by: Rick Kern <kernrj@gmail.com>

* commit '5b1b495c':
  build: Print a message when generating version scripts
Merged-by: Matthieu Bouron <matthieu.bouron@stupeflix.com>

See merge commit '39d6d361'.

* commit '1e9c5bf4':
  asm: FF_-prefix internal macros used in inline assembly

This commit is a noop as the ASM codebase differs too much between libav
and ffmpeg. The corresponding chunks will be found in the next commit.
Merged-by: Matthieu Bouron <matthieu.bouron@stupeflix.com>

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