* cigaes/master:
  lavf/matroskaenc: return an error for unsupported types.
  lavf/concatdec: remove invalid check for AVSEEK_FLAG_BACKWARD.
  lavf: filter out AVSEEK_FLAG_BACKWARD in new API.
  lavf: call the new seek API from the old.
Merged-by: Michael Niedermayer <michaelni@gmx.at>

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

The reimplementation by Libav does not prevent out of array
writes, even though it looks like it does at a quick glance.

No FFmpeg releases are affected by this

See: d1c95d2c
     3623589e
     740ebe46

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

Also document that it has no effect.

If the demuxer implements read_seek2() and not read_seek(),
call avformat_seek_file() from av_seek_frame().
Allow to properly seek in formats that only implement the
new API from applications that use the old one.
Tested with mplayer and a concat script.

If no decoding error was detected, but still no audio was decoded, the
frame needs to be free'ed, or it will leak.

Fixes part of ticket #2095
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

* qatar/master:
  wav: return meaningful errors

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

* commit 'a5f88736':
  silly typo fixes

Conflicts:
	doc/protocols.texi
	libavcodec/aacpsy.c
	libavformat/utils.c
	tools/patcheck
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '4a7af92c':
  sbrdsp: Unroll and use integer operations
  sbrdsp: Unroll sbr_autocorrelate_c
  x86: sbrdsp: Implement SSE2 qmf_deint_bfly

Conflicts:
	libavcodec/sbrdsp.c
	libavcodec/x86/sbrdsp.asm
	libavcodec/x86/sbrdsp_init.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

The specification wants round(abs(x))) * sign(x) which is
equivakent to round(x)

Fixes out of array access

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

Fixes out of array accesses
No release is affected by this bug

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

Fixes out of array reads

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>

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

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

This patch can be controversial, by assuming floats are IEEE-754 and
particular behaviour of the FPU will get in the way.
Timing on Arrandale and Win32 (thus, x87 FPU is used in the reference).

sbr_qmf_pre_shuffle_c: 115 to 76
sbr_neg_odd_64_c: 84 to 55
sbr_qmf_post_shuffle_c: 112 to 83
Signed-off-by: Diego Biurrun <diego@biurrun.de>

1410 cycles to 1148 on Arrandale/Win64
Signed-off-by: Diego Biurrun <diego@biurrun.de>

Sandybridge: 47 cycles

Having a loop counter is a 7 cycle gain.
Unrolling is another 7 cycle gain.
Working in reverse scan is another 6 cycles.
Signed-off-by: Diego Biurrun <diego@biurrun.de>

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

Fixes Ticket2523
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

* qatar/master:
  compat: msvc: Make sure the object files are included when linking statically
  id3v2: check for end of file while unescaping tags

Conflicts:
	configure
	libavformat/id3v2.c

Note, ffmpeg is not affected by the out of buffer write bug
Merged-by: Michael Niedermayer <michaelni@gmx.at>

All bugs should now be fixed in the new so the old can be droped.
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>

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

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

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

This moves the code to after the bitstream filters
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

* qatar/master:
  avconv: do not send non-monotonous DTS to the muxers.

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

* commit 'b4a5a292':
  avconv: improve -re implementation

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

* commit 'e3b225a4':
  matroskaenc: add an option to put the index at the start of the file

Conflicts:
	doc/muxers.texi
	libavformat/matroskaenc.c
	libavformat/version.h
Merged-by: Michael Niedermayer <michaelni@gmx.at>