Respect order of call during the filter lifecycle, improve readability.

Rely on generic utilities for computing each plane linesize.

In particular, add support to NV12/21 formats and avoid use of
PIX_FMT_PLANAR pixdesc flag, whose semantics is questionable.

It also fixes various crashes.

* commit 'e58013dd':
  sws: use planarRgbToRgbWrapper only for 8bit per component

Conflicts:
	libswscale/swscale_unscaled.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'd6d5ef55':
  sws: GBRP9, GBRP10, and GBRP16 output support

Conflicts:
	libswscale/output.c
	libswscale/utils.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>

* commit '81726a4f':
  FATE: add tests for additional flavors of asf cover art
  asfdec: do not assume every AVStream has a corresponding ASFStream
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'f5fac6f7':
  asfdec: support reading ID3v2 tags in ASF files

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

* commit 'db0a9432':
  avplay: apply the stream sample_aspect_ratio to decoded video frames
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '84b721db':
  asfdec: also read Metadata Library Object
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '61f9ad2d':
  asfdec: read the full Metadata Object, not just aspect ratio information
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '36fab50e':
  asfdec: silence a warning
  mss4, ra288: Remove unused DSPContext local codec context members
Merged-by: Michael Niedermayer <michaelni@gmx.at>

Some real codecs are supported by the matroska specification
(and FFmpeg's matroska demuxer) but not the FFmpeg muxer.

This fixes various poorly choosen pixel format cases.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

get_pix_fmt_score() returns a score representing the amount
of loss when converting a pixel format
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

Native il video filter is now available.
Signed-off-by: Paul B Mahol <onemda@gmail.com>

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

Fixes out of array accesses

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

The function doesnt support >8bit currently
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

Yes, these files do exist
Signed-off-by: Vladimir Pantelic <vladoman@gmail.com>
Signed-off-by: Anton Khirnov <anton@khirnov.net>

If there is a sample_aspect_ratio in the stream, then apply it to every
decoded frame in the same way as avconv does. This also makes sure that
the avfilter chain has access to the aspect ratio.
Signed-off-by: Vladimir Pantelic <vladoman@gmail.com>
Signed-off-by: Anton Khirnov <anton@khirnov.net>

In some ASF files this objects holds cover art and other tags. Compared to
Metadata Object it can also hold GUIDs, but we ignore these for now.
Signed-off-by: Vladimir Pantelic <vladoman@gmail.com>
Signed-off-by: Anton Khirnov <anton@khirnov.net>

Use the same get_tag()/get_value() as for the Extended Content Description
but handle the 16 bit vs 32 bit difference for type 2 (BOOL)
Signed-off-by: Vladimir Pantelic <vladoman@gmail.com>
Signed-off-by: Anton Khirnov <anton@khirnov.net>

Signed-off-by: Vladimir Pantelic <vladoman@gmail.com>
Signed-off-by: Anton Khirnov <anton@khirnov.net>

This won't be true for ID3 attached picture.

Also stop allocating now useless dummy ASFStreams for ASF native
attached pictures.

Fixes out of array reads

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind

Rename the uncommon variant with side speakers to "7.1(wide-side)".

Fixes bunch of warnings of E redefinition under clang.
Signed-off-by: Paul B Mahol <onemda@gmail.com>

Now it displays all color components (not just luma)
either in parade or overlay and also works with RGB colorspace.
Signed-off-by: Paul B Mahol <onemda@gmail.com>

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

Use proper name for ending chapter.