Based on a patch by Wolfram Gloger <wmglo@dent.med.uni-muenchen.de>.
http://lists.ffmpeg.org/pipermail/ffmpeg-devel/2012-December/136677.html

The original patch was rebased by Tudor SUCIU <tudor.suciu@gmail.com>.

Lots of additional features and fixes are made by me.

Fixes ticket #2086.

Changes since last version:
- change default page to all pages
Signed-off-by: Marton Balint <cus@passwd.hu>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

* cehoyos/master:
  Read h264 headers from v4l2 to allow stream-copying.
Merged-by: Michael Niedermayer <michaelni@gmx.at>

This moves some allocations to init, reducing possible failure modes in update.
Always copies from the previous context instead of just during init

Fixes Ticket2923
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

Fixes ticket #2882.
Analyzed and tested by William C Bonner.

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

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

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

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

The pixel format descriptors are set to more or less arbitrary
values as bayer formats do not fit in the descriptors structure.
These values are currently not used for bayer formats and thus
do not matter.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

* qatar/master:
  pcm-dvd: Fix build on big endian

See: 789cd1deMerged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'f4ca970d':
  configure: Add docdir configuration option

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

* commit 'faa8245b':
  vf_lut: Constantize

Conflicts:
	libavfilter/vf_lut.c

See: d7e95ccdMerged-by: Michael Niedermayer <michaelni@gmx.at>

This prevents a potential crash
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Martin Storsjö <martin@martin.st>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'a42e3a67':
  pcm_dvd: consolidate pieces from pcm.c and mpeg.c

Conflicts:
	libavcodec/pcm.c
	libavcodec/version.h
	libavformat/mpeg.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

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

Should address trac ticket #2621.

It was broken since 2186a7e5.

Fixes Ticket2910
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

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

lxf needs a parser (or would need to set a few fields explicitly).
Fixes Ticket2917
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

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: Luca Barbato <lu_zero@gentoo.org>

The pixel format tables are never modified, mark them as constant.
Signed-off-by: Diego Elio Pettenò <flameeyes@flameeyes.eu>
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

* cehoyos/master:
  Fix make checkheaders for wavpackenc.h
  Fix make checkheaders for vdpau_internal.h
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* qatar/master:
  pcm_bluray: cosmetics

Conflicts:
	libavcodec/pcm-bluray.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '0d6549d8':
  pcm_bluray: rename pcm-mpeg.c to pcm-bluray.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

Remove the header decoding for PCM audio from mpeg.c and the
20/24bit parts from pcm.c and merge them into a new decoder in
pcm-dvd.c.

The decoder has added support for samples that span multiple
packets and modified 20/24bit group decoding. Both is needed to
decode samples that have been generated with DVD-Lab Pro 2. The
decoding of 16bit PCM and two channel 24bit is identical to
before. No other samples are known to verify the correctness of
the encoding this software does.
The complete list of tested formats is
48kHz/16bit/2-8 channels
48kHz/24bit/2-5 channels
96kHz/16bit/2-4 channels
96kHz/24bit/2 channels
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

The original idea was to collect PCM codecs that could appear in various
MPEG streams in this file. Discussion in IRC lead to the conclusion that
one codec per file would be better and stop the need for #ifdefs.

Fixes Ticket2861
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

Fixes out of array accesses
Fixes Ticket2919

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