Fixes bug127
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Fixes ticket #940.

* qatar/master:
  Remove ffmpeg.
  aacenc: Simplify windowing
  aacenc: Move saved overlap samples to the beginning of the same buffer as incoming samples.
  aacenc: Deinterleave input samples before processing.
  aacenc: Store channel count in AACEncContext.
  aacenc: Move Q^3/4 calculation to it's own table
  aacenc: Request normalized float samples instead of converting s16 samples to float.
  aacpsy: Replace an if with FFMAX in LAME windowing.
  aacenc: cosmetics, replace 'rd' with 'bits' in codebook_trellis_rate to make it more clear what is being calculated.
  aacpsy: cosmetics, change a FIXME to a NOTE about subshort comparisons
  aacenc: cosmetics: move init() and end() to the bottom of the file.
  aacenc: aac_encode_init() cleanup
  XWD encoder and decoder
  vc1: don't read the interpfrm and bfraction elements for interlaced frames
  mxfdec: fix memleak on mxf_read_close()
  westwood: split the AUD and VQA demuxers into separate files.

Conflicts:
	.gitignore
	Changelog
	Makefile
	configure
	doc/ffmpeg.texi
	ffmpeg.c
	libavcodec/Makefile
	libavcodec/aacenc.c
	libavcodec/allcodecs.c
	libavcodec/avcodec.h
	libavcodec/version.h
	libavformat/Makefile
	libavformat/img2.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

This reverts commit b3452771.

A better solution was implemented by Nathan Caldwell.

Conflicts:

	libavcodec/aacenc.c

This reduces the delay when opening the video with quicktime.
Idea-by: Maksym Veremeyenko <verem@m1stereo.tv>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

Signed-off-by: Alex Converse <alex.converse@gmail.com>

Signed-off-by: Alex Converse <alex.converse@gmail.com>

Signed-off-by: Alex Converse <alex.converse@gmail.com>

Signed-off-by: Alex Converse <alex.converse@gmail.com>

This should be moved to tablegen at some point.
Signed-off-by: Alex Converse <alex.converse@gmail.com>

Signed-off-by: Alex Converse <alex.converse@gmail.com>

Signed-off-by: Alex Converse <alex.converse@gmail.com>

aacenc: cosmetics, replace 'rd' with 'bits' in codebook_trellis_rate to make it more clear what is being calculated.
Signed-off-by: Alex Converse <alex.converse@gmail.com>

Also fix a typo.
Signed-off-by: Alex Converse <alex.converse@gmail.com>

Signed-off-by: Alex Converse <alex.converse@gmail.com>

Macroify sanity checks and check return values of allocs and other functions.
Signed-off-by: Alex Converse <alex.converse@gmail.com>

Signed-off-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

The previous implementation assumed that a new picture would always
supersede the previous picture. Similarly, presentation segments
were assumed to pertain to the most-recently-read picture.

However, each presentation segment may refer to 0 or more pictures
by their ID. Picture IDs may repeat, and a repeated picture ID
indicates that the old picture for that ID is no longer needed
and may be discarded.

The new implementation allocates a buffer with one slot for each
possible picture ID (the picture ID is a 16-bit field) and
properly decodes presentation segments so that all relevant
pictures are output upon encountering a display segment.

Given that most PGS streams are unlikely to use more than a small
fraction of the available picture IDs, it would probably be better
to use a more memory-efficient data structure. I'm lazy though, so
I leave this to a more motivated individual.

I've tested the code with MKV files in VLC (a recent revision from
their git repo) and with HandBrake (a version that I hacked up to
use ffmpeg's PGS subtitle decoder).
Review-by: Hendrik Leppkes <h.leppkes@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Fixes bug118, bug120 and bug125 at least
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

This fixes memory corruption when seeking in broken streams.
a random mpeg4 in nut file was used to debug.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Kostya Shishkov <kostya.shishkov@gmail.com>

This matches the spec as well as the reference decoder, and fixes a bug
with interlaced frame decoding.
Signed-off-by: Kostya Shishkov <kostya.shishkov@gmail.com>

They have no code in common.

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

* qatar/master: (25 commits)
  riff: fix invalid av_freep() calls on EOF in ff_read_riff_info
  pam: Fix a typo that broke writing and reading PAM files.
  mxfdec: fix memleak on av_realloc failures
  mxfdec: Do not parse slices or DeltaEntryArrays.
  mxfdec: hybrid demuxing/seeking solution
  mxfdec: Add Avid's essence element key.
  mfxdec: Separate mxf_essence_container_uls for audio and video.
  mxfdec: Compute packet offsets properly.
  mxfdec: Use MaterialPackage - Track - TrackID instead of the system_item hack.
  mxfdec: use av_dlog() for 'no corresponding source package found'
  mxfdec: Make mxf->partitions sorted by offset.
  mxfdec: parse ThisPartition
  mxfdec: Speed up metadata and index parsing.
  mxfdec: Make sure DataDefinition is consistent between material track and source track.
  mxfdec: add EssenceContainer UL found in 0001GL00.MXF.A1.mxf_opatom.mxf
  mxfdec: Add hack that adjusts the n_delta calculation when system items are present.
  mxfdec: Parse IndexTableSegments and convert them into AVIndexEntry arrays.
  mxfdec: Move FooterPartition to MXFContext and make sure it is never zero.
  mxfdec: check return value of avio_seek
  mxfdec: skip to end of structural sets
  ...

Conflicts:
	configure
	libavcodec/pnm.c
	libavformat/mxfdec.c
	libavformat/riff.c
	libavformat/rtsp.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

This was a regression that came in when I switched to using the
h.264 annex b filter all the time. As the filter modifies extradata,
its use violates the statelessness assumption that exists in the
'ffmpeg' command line tool, and maybe elsewhere. It assumes that
a docoder can be reinitalised and pointed to an existing stream and
get the same results.

For now, the only way to meet this requirement is to backup the
extradata.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>