benchmark (on intel core2 duo, gcc 4.9.1)
input samples duration 00:03:39.59
command: time -p ffmpeg -f f32le -ac 2 -ar 44100 -i input.pcm \
         -filter_complex showcqt=fullhd=0:gamma=$gamma \
         -f rawvideo -y /dev/null
gamma  previous  modified
  1    48.49 s   45.38 s
  2    49.33 s   48.11 s
  3    80.86 s   59.80 s
  4    80.84 s   51.25 s
  5    80.75 s   61.06 s
  6    80.93 s   61.80 s
  7    80.03 s   61.56 s
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Reviewed-by: Timo Rothenpieler <timo@rothenpieler.org>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Since version 4, plane_index for the alpha plane is 1 in the case chroma_planes is 0.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

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

* commit '3edeb774':
  configure: Allow log2 with MSVC 2013 onwards.

Conflicts:
	configure

See: 4d93e758Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '863ee068':
  configure: Use the right local variable in the MSVC and ICL probes

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

* commit '709e1c91':
  avprobe: Print the display matrix from per-stream sidedata

Conflicts:
	avprobe.c

See: 08152f2dMerged-by: Michael Niedermayer <michaelni@gmx.at>

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

Idea from 709e1c91 by Martin Storsjö
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

* commit '3080b049':
  avprobe: Support writing arrays of integers without keys

Conflicts:
	avprobe.c

Not merged
Merged-by: Michael Niedermayer <michaelni@gmx.at>

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

* commit '16302246':
  avconv: Add an option for automatically rotating video according to display matrix

Conflicts:
	Changelog
	ffmpeg_opt.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'e2d50fc2':
  avplay: Add support for rotated video

Conflicts:
	configure
	doc/ffplay.texi
	ffplay.c

See: 08c51e12Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '21180b73':
  avplay: Factorize code for adding filters to the filter pipeline

Conflicts:
	ffplay.c

See: 08c51e12Merged-by: Michael Niedermayer <michaelni@gmx.at>

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

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

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

Only MSVC 2010 in x64 mode, in the static msvcrt, had a
stray log2 function (which wasn't available in the headers).

MSVC 2013 has got a proper log2 function though.
Signed-off-by: Martin Storsjö <martin@martin.st>

$cc is the compiler requested as main target compiler, while $_cc
is the actual tool tested in the probe function right now (which
can also be e.g. the host compiler).
Signed-off-by: Martin Storsjö <martin@martin.st>

This is printed in a separate subgroup "displaymatrix" inside a
new group named "sidedata". The subgroup has got two values,
"rotation" (which is the parsed rotation from the matrix) and
"matrix" containing the full actual values.
Signed-off-by: Martin Storsjö <martin@martin.st>

Signed-off-by: Martin Storsjö <martin@martin.st>

The option is enabled by default, but can be disabled.

If this is enabled, such side data isn't copied into the output stream
(except when doing stream copy).
Signed-off-by: Martin Storsjö <martin@martin.st>

This is enabled by default, but can be disbled via the -noautorotate
option.

Based on a patch by Clément Bœsch.
Signed-off-by: Martin Storsjö <martin@martin.st>

Significantly based on a patch by Clément Bœsch.
Signed-off-by: Martin Storsjö <martin@martin.st>

The name is based on how the field is used in the code
Reviewed-by: compn <tempn@mi.rr.com>
Signed-off-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>

The table contains no element outside the unsigned 8bit range
Signed-off-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>

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

* rbultje/vp9-profile1-wip:
  vp9: add fate test for 422.
  vp9: copy bug in libvpx for 4:2:2 chroma bs=8x4/4x4 prediction.
  vp9: add yuv440 fate test.
  vp9: fix mask_edges and filter_plane_rows/cols() for 440.
  vp9: more specifically specify mask destination to mask_edges().
  vp9: add fate test for profile 1 444.
  vp9: don't create special u/v filter masks for 444.
  vp9: merge uv loopfilter code into generic filter_plane_rows/cols().
  vp9: split out loopfilter luma rows/cols functions from loopfilter_sb().
  vp9: invert order of two conditions.
  vp9: use correct chroma subsampling for profile 1 inter block recon.
  vp9: use correct chroma subsampling for profile 1 intra block recon.
  vp9: take chroma subsampling into account when walking the block tree.
  vp9: support non-420 chroma subsampling for profile 1 token decoding.
  vp9: increase buffer sizes for non-420 chroma subsamplings.
  vp9: profile 1 header decoding.
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '3ecb82dd':
  dnxhddec: Fix pixel format change

See: dcac15a8Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '6503cbf8':
  ffv1enc: Add const attribute to input frame

Conflicts:
	libavcodec/ffv1.h

no change, the changed field does not exist in FFmpeg
Merged-by: Michael Niedermayer <michaelni@gmx.at>

Regression introduced in 598f7d04.
Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>

warning: assigning to 'AVFrame *' (aka 'struct AVFrame *') from
         'const AVFrame *' (aka 'const struct AVFrame *') discards
         qualifiers [-Wincompatible-pointer-types-discards-qualifiers]