While outwardly bizarre, this change makes the behaviour consistent
with other VAAPI encoders which sync to the encode /input/ picture in
order to wait for /output/ from the encoder.  It is not harmful on
i965 (because synchronisation already happens in vaRenderPicture(),
so it has no effect there), and it allows the encoder to work on
mesa/gallium which assumes this behaviour.

This improves behaviour with drivers which do not support packed
headers, such as AMD VCE on mesa/gallium.

This allows better checking of capabilities and will make it easier
to add more functionality later.

It also commonises some duplicated code around rate control setup
and adds more comments explaining the internals.

This way, in case of bit rate not being set, max_bitrate will be
used instead. This enables, for example, re-using max_bitrate
information from the input or doing transcoding with a rate
control mode that is not bit rate based.

Signed-off-by: Jan Ekström <jeebjp@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

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

See "[FFmpeg-devel] [PATCH] hwcontext: add a QSV implementation"

Suggested-by: nablet developer <sdk@nablet.com>
Signed-off-by: James Almer <jamrial@gmail.com>

* commit '59e7361cc791e5103be1712dc59a2055f118d0da':
  hwcontext: add a QSV implementation

Conflicts:
    doc/APIchanges
    libavutil/version.h

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

* commit '6f19bbcf8532d018d8d6d82e000738d0ac2385c9':
  qsvdec: move reading the user-provided session to qsv_decode_init()

Conflicts:
    libavcodec/qsvdec.c

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

* commit 'e85f6f7f8d037c0af0f294000718d9ba22753baa':
  lavc: allow using AVCodecContext.hw_frames_ctx for decoding

Conflicts:
    doc/APIchanges
    libavcodec/version.h

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

* commit '40dd5166d2ba4f9035b93748840e408cd8be40e5':
  truemotion2rt: Use ff_set_dimensions

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

* commit 'a8164323374e86ce5f93759230868c98356833a2':
  pixdesc: Add new SMPTE 431, 432, and 2085 color properties

Conflicts:
    libavcodec/options_table.h
    libavcodec/version.h
    libavutil/pixdesc.c
    libavutil/pixfmt.h
    libavutil/version.h

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

* commit '5d560d38deca1e4705e6d3784d737363b9c830fe':
  pixfmt: Add ARIB STD-B76 color transfer characteristic

See 785038c92c

Conflicts:
    libavcodec/options_table.h
    libavcodec/version.h
    libavutil/pixdesc.c
    libavutil/version.h

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

* commit '6ed0f70f97c882813199b3bafd724ceeb43659de':
  avconv: factor out initializing stream parameters for streamcopy

Conflicts:
    ffmpeg.c

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

* commit '5fa255b65c7887cc913f097aed1b581fbf1a8745':
  avconv: initialize output framerate earlier

Skipping this for now. It's not needed until several committs ahead,
and should be carefully implemented.

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

Regression since / partial revert of ba3bb53b

Fixes ticket #1673.

Merged from libav commit by Yogender Gupta:
https://git.libav.org/?p=libav.git;a=commitdiff;h=70de2ea4261f860457a04e3d0c58c5543f403325

Based on libav commits by Luca Barbato and Yogender Gupta:
https://git.libav.org/?p=libav.git;a=commit;h=352741b5ead1543d775ccf6040f33023e4491186
https://git.libav.org/?p=libav.git;a=commit;h=e02e2515b24bfc37ede6ca1744696230be55e50b

Fixes null pointer dereference
Fixes: 1/null_point.avi

Found-by: 连一汉 <lianyihan@360.cn>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

This assert can with crafted files fail, a warning is already printed
for this case.

Fixes assertion failure
Fixes:1/assert.avi

Found-by: 连一汉 <lianyihan@360.cn>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: Josh de Kock <josh@itanimul.li>

Signed-off-by: Sasi Inguva <isasi@google.com>

Also don't set time_base. It's deprecated for decoding and avcodec_open2()
will overwrite it

Reviewed-by: Josh de Kock <josh@itanimul.li>
Signed-off-by: James Almer <jamrial@gmail.com>

Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: James Almer <jamrial@gmail.com>

Signed-off-by: Sophia Wang <skw@google.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Signed-off-by: Mulvya <mulvya@gmail.com>
Signed-off-by: Lou Logan <lou@lrcd.com>

It is used to select functions that work with 9-15bits.

Make sure the scaling functions for the 9-15bits are used for
9-15bits bit depths correctly.

This commit is based on commit 35c8580 from Anton Khirnov <anton@khirnov.net>
which was skipped in b8945c4.

The avcodec_copy_context() call in the encode path is left in place for now
as AVStream.codec is apparently still required even after porting ffmpeg to
the new bsf API.

Tested-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: James Almer <jamrial@gmail.com>

This will allow ffmpeg.c to stop using AVStream.codec in some cases

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

Found-by: James Almer <jamrial@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

API and Doxy documentation is taken from avresample_build_matrix()
Fixes: Ticket5780

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

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

There is no "Data options" paragraph.
Requested-by: ilker tezcan

Follow a 420, 422, 444 order instead of a random one.
This simplifies double-checking additions of new formats.

Signed-off-by: Diego Biurrun <diego@biurrun.de>