* sws_32bit_integration:
  regtests/sws: update checksums for recent changes
  sws: dont mess with XInc when the code needing it isnt used
  sws: Fix chroma init for 32bit buffers.
  swscale: error dithering for 16/9/10-bit to 8-bit.
  swscale: fix overflow in 16-bit vertical scaling.
  swscale: fix crash in 8-bpc bilinear output without alpha.
  swscale: fix 16-bit scaling when output is 8-bits.
  sws: fix non native endian 9-15 bit input with 16bit out
  sws: disable scale16 when int32 is used
  sws: fix rgb -> 16bit
  sws: fix uv overwrite in 32bt
  sws: fix gray16_1
  sws:ix yuv2rgb48_1_c_template()
  sws: fix 16/32 bug from merge
  swscale: for >8bit scaling, read in native bit-depth.
  swscale: fix another yuv range conversion overflow in 16bit scaling. (cherry picked from commit 81cc7d0bd1)
  swscale: fix yuv range correction when using 16-bit scaling. (cherry picked from commit e0b8fff6c7)
  swscale: implement >8bit scaling support.

Merged-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Based on a somewhat similar idea in FFmpeg's swscale copy.

We operated on 31-bits, but with e.g. lanczos scaling, values can
add up to beyond 0x80000000, thus leading to output of zeroes. Drop
one bit of precision fixes this.

We accessed the alpha array even it wasn't used and didn't
exist, hence leading to a NULL pointer segfault.
(cherry picked from commit bf2cba4532)

We would use the second half of the U plane buffer, rather than the
V plane buffer, to output the V plane pixels.

For 9/10bit, it means we don't have to upscale to 16bit before
actual scaling or pixel format conversion, and thus a performance
gain.

* ronalds_buggy_gt8bit_sws:
  swscale: fix another yuv range conversion overflow in 16bit scaling. (cherry picked from commit 81cc7d0bd1)
  swscale: fix yuv range correction when using 16-bit scaling. (cherry picked from commit e0b8fff6c7)
  swscale: implement >8bit scaling support.

Conflicts:
	libswscale/swscale.c
	libswscale/utils.c
	libswscale/x86/swscale_template.c
	tests/ref/lavfi/pixdesc
	tests/ref/lavfi/pixfmts_copy
	tests/ref/lavfi/pixfmts_null
	tests/ref/lavfi/pixfmts_scale
	tests/ref/lavfi/pixfmts_vflip

Merged-by: Michael Niedermayer <michaelni@gmx.at>

Simplify.

Simplify.

Since avfilter_graph_parse() creates the "[in]" inout for the first
unlabelled input pad, it is expected that it will create an "[out]"
inout for last unlabelled output pad, even in the case where it cannot
find any open input pad with that name.

This change removes the check on the existence of an open input pad
named "out", so it simplifies the checked condition while implementing
a more intuitive behavior.

* qatar/master: (22 commits)
  H.264: fix filter_mb_fast with 4:4:4 + 8x8dct
  alsa: limit buffer_size to 32768 frames.
  alsa: fallback to buffer_size/4 for period_size.
  doc: replace @pxref by @ref where appropriate
  mpeg1video: don't abort if thread_count is too high.
  segafilm: add support for videos with cri adx adpcm
  gxf: Fix 25 fps DV material in GXF being misdetected as 50 fps
  libxvid: Add const qualifier to silence compiler warning.
  H.264: improve qp_thresh check
  H.264: use fill_rectangle in CABAC decoding
  H.264: Remove redundant hl_motion_16/8 code
  H.264: merge fill_rectangle into P-SKIP MV prediction, to match B-SKIP
  H.264: faster P-SKIP decoding
  H.264: av_always_inline some more functions
  H.264: Add x86 assembly for 10-bit H.264 predict functions
  swscale: rename uv_off/uv_off2 to uv_off_px/byte.
  swscale: implement error dithering in planarCopyWrapper.
  swscale: error dithering for 16/9/10-bit to 8-bit.
  swscale: fix overflow in 16-bit vertical scaling.
  swscale: fix crash in 8-bpc bilinear output without alpha.
  ...

Conflicts:
	doc/developer.texi
	libavdevice/alsa-audio.h
	libavformat/gxf.c
	libswscale/swscale.c
	libswscale/swscale_internal.h
	libswscale/swscale_unscaled.c
	libswscale/x86/swscale_template.c
	tests/ref/lavfi/pixdesc
	tests/ref/lavfi/pixfmts_copy
	tests/ref/lavfi/pixfmts_crop
	tests/ref/lavfi/pixfmts_hflip
	tests/ref/lavfi/pixfmts_null
	tests/ref/lavfi/pixfmts_scale
	tests/ref/lavfi/pixfmts_vflip

Merged-by: Michael Niedermayer <michaelni@gmx.at>

In testing, the file output plugin gave a max buffer size of about 20 million
frames, which is way more than what is really needed and causes a memory
allocation error on my system.

buffer_size/4 is the value used by aplay. This fixes output to null
devices, e.g. writing ALSA output to a file.

Instead, just decrease it to a valid value and use that.

Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>

The workaround need to be enabled per pci id which can not
be detected inside ffmpeg. So this adds a flag that enabled
the alternate behavior.

Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>

So it is more clear the context of the sentence.

This is required, or avcodec_open() will abort because of invalid
sample format.

Set DV packet durations using fields_per_frame.
This requires turning gxf_stream_info into the demuxer's context for access to the value in gxf_packet().
Since MPEG-2 seems to work fine this done only for DV.

Signed-off-by: Anton Khirnov <anton@khirnov.net>

libavcodec/libxvidff.c:752: warning: initialization discards qualifiers from pointer target type

* qatar/master: (28 commits)
  mp3enc: write a xing frame containing number of frames in the file
  lavf: update AVStream.nb_frames when muxing.
  ffmpeg: remove unused variables from InputStream.
  doc: update ffmpeg -ar and -ac documentation to reflect reality.
  ffmpeg: remove pointless if (nb_input_files)
  ffmpeg: merge input_files_ts_offset into input_files.
  ffmpeg: merge input_codecs into input_streams.
  ffmpeg: drop AV prefixes from struct names.
  ffmpeg: deprecate loop_input and loop_output options
  gif: add loop private option.
  img2: add loop private option.
  AVOptions: in av_opt_find() don't return named constants unless unit is specified.
  x11grab: replace undocumented nomouse hackery with a private option.
  dict: extend documentation.
  lls: whitespace cosmetics
  docs: Use proper markup for a literal command line option
  docs: Remove a remark that isn't relevant any longer
  docs: Explain how to regenerate import libraries with MSVC tools
  docs: Mention that libraries for MSVC can be built with a cross compiler
  docs: Remove old docs that mention setting up a build environment with lib.exe
  ...

Conflicts:
	doc/ffmpeg.texi
	doc/general.texi
	ffmpeg.c
	libavcodec/Makefile
	libavcodec/dnxhddata.c
	libavformat/mp3enc.c
	libavformat/utils.c
	libavutil/Makefile
	tests/copycooker.sh

Merged-by: Michael Niedermayer <michaelni@gmx.at>

Eliminate redundant check in filter_mb_fast, consider bit depth in calculating qp_thresh.

Inline the relevant parts of fill_decode_caches into P-SKIP mv prediction to
avoid calling the whole thing.

These weren't getting inlined all the time in all gcc versions.

Mainly ported from 8-bit H.264 predict.

Some code ported from x264. LGPL ok by author.

Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Based on a somewhat similar idea in FFmpeg's swscale.