* qatar/master:
  ARM: ac3: update ff_ac3_extract_exponents_neon per 8b7b2d6a
  ARM: NEON optimised vector_clip_int32()
  swscale: disable full_chroma_int when converting to non-24/32bpp RGB.
  suggest to use av_get_bytes_per_sample() in av_get_bits_per_sample_format() doxy
  ffmpeg: use av_get_bytes_per_sample() in place of av_get_bits_per_sample_fmt()
  put_bits: remove ALT_BITSTREAM_WRITER
  put_bits: always use intreadwrite.h macros
  libavformat: Add an example how to use the metadata API
  doxygen: Prefer member groups over grouping into modules
  doxygen: be more permissive when searching for API examples
  avformat: doxify the Metadata API
  lavf: restore old behavior for custom AVIOContex with an AVFMT_NOFILE format.
  lavf: use the correct pointer in av_open_input_stream().
  avidec: infer absolute vs relative index from first packet

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

Signed-off-by: Mans Rullgard <mans@mansr.com>

Signed-off-by: Mans Rullgard <mans@mansr.com>

This functionality is only implemented for RGB24/32 and causes crashes
otherwise.

The previously suggested replacement - av_get_bits_per_sample_fmt() -
was also deprecated.
Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>

av_get_bits_per_sample_fmt() was deprecated.
Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>

The code for this variant does not compile.
Signed-off-by: Mans Rullgard <mans@mansr.com>

This fixes invalid unaligned stores in some ARM configurations.
Signed-off-by: Mans Rullgard <mans@mansr.com>

The value for inpic->data[plane] with plane >=4 is undefined, and it
will contain in general random data. This change adds a check for
exiting the loop when plane reaches the value 4.

Fix crash (occurring for example with: format=rgba,lut).

Also include it into the doxygen documentation

Before this, almost all module groups have been used for grouping functions
and fields in structures semantically. This causes them to not appear
properly in the file documentation and needlessly clutters up the "Modules"
index.

Additionally, this commit streamlines some spelling and appearances.

Signed-off-by: Stefano Sabatini <stefano.sabatini-lala@poste.it>

The PTS for captured audio was measured using snd_pcm_htimestamp.

snd_pcm_htimestamp hangs when the input is a dsnoop plugin.

Furthermore, at some point, snd_pcm_htimestamp started returning monotonic
timestamps rather than wall clock timestamps, in most but not all
situations.
Monotonic timestamps are fine, but ffmpeg uses wall clock timestamps
everywhere else, and we have no API to inform the user which kind of
timestamps it is.

A separate snd_pcm_htimestamp is only slightly less accurate than
snd_pcm_htimestamp: the standard deviation for the difference between two
consecutive timestamps is (on my hardware):
- ~13 µs with snd_pcm_htimestamp;
- ~35 µs with av_gettime;
-  ~5 µs with av_gettime and a timefilter.

convert the comment that documents the metadata API to use
the doxygen markup

av_open_input_stream used to allow this, even though it makes no sense.
Make it just print a warning instead of failing, thus restoring
compatibility.

Note that avformat_open_input() will still reject this combination.
Signed-off-by: Anton Khirnov <anton@khirnov.net>

* qatar/master:
  get_bits: remove x86 inline asm in A32 bitstream reader
  doc: Remove outdated information about our issue tracker
  avidec: Factor out the sync fucntionality.
  fate-aac: Expand coverage.
  ac3dsp: add x86-optimized versions of ac3dsp.extract_exponents().
  ac3dsp: simplify extract_exponents() now that it does not need to do clipping.
  ac3enc: clip coefficients after MDCT.
  ac3enc: add int32_t array clipping function to DSPUtil, including x86 versions.
  swscale: for >8bit scaling, read in native bit-depth.
  matroskadec: matroska_read_seek after after EBML_STOP leads to failure.
  doxygen: fix usage of @file directive in libavutil/{dict,file}.h
  doxygen: Help doxygen parser to understand the DECLARE_ALIGNED and offsetof macros

Conflicts:
	doc/issue_tracker.txt
	libavformat/avidec.c
	libavutil/dict.h
	libswscale/swscale.c
	libswscale/utils.c
	tests/ref/lavfi/pixfmts_scale
Merged-by: Michael Niedermayer <michaelni@gmx.at>

x86 does not use this variant so having inline asm there
is pointless.
Signed-off-by: Mans Rullgard <mans@mansr.com>

We have now switched to http://bugzilla.libav.org.

Add al05_44, al06_44, al17_44.

This ensures that any processing between the MDCT and exponent extraction will
be using clipped coefficients.

period_size is in frames, while the demuxer assumed it was in bytes,
resulting in short reads.

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.

EBML_STOP leaves matroska->current_id set. Then matroska_read_seek changes
the stream position without resetting current_id.  The next
matroska_parse_cluster  fails due to calculation of incorrect pos.  So clear
current_id when avio_seek happens in matroska_read_seek.
Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>

This is required after the OPT_FUNC2 removal.

Also generalize it, making it accept ints rather than pixel formats.
Allow factorization.

Signed-off-by: Stefano Sabatini <stefano.sabatini-lala@poste.it>

achive -> achieve