15k->10k cpu cycles
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

19k -> 15k cpu cycles
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

2500 -> 1900 cpu cycles
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

This fixes muxing audio-only output resulting in SIGFPE due to lack of EditRate.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

* qatar/master:
  FATE: Add RALF decoding test

Conflicts:
	tests/fate/real.mak
Merged-by: Michael Niedermayer <michaelni@gmx.at>

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

note the function is used under #if
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

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

Fix map_channel when mapped audio stream index is greater than 0.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

Some applications use these combinations and to maintain ABI
compatibility with previous versions we should not suddenly
fail. Thus only display a warning for the newly detected cases
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

* qatar/master:
  vsrc_buffer: allow buffering arbitrary number of frames.
  vf_scale: avoid a pointless memcpy in no-op conversion.
  avfiltergraph: try to reduce format conversions in filters.
  avfiltergraph: add an AVClass to AVFilterGraph on next major bump.
  id3v2: fix skipping extended header in id3v2.4

Conflicts:
	libavfilter/vf_scale.c
	libavfilter/vsrc_buffer.c
	libavformat/id3v2.c
Merged-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>

Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

Replaces FPE by clean error
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Fixes Ticket387
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Fixes Ticket1156
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

The new code detects NI avis by analyzing the index.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

I.e. just pass the buffer along when src parameters == dst parameters.

Current code, with a filterchain such as
(input - yuv411) -> (scale - any) -> (sink - any)
will result in yuv420 being chosen for the second link, which is clearly
not right.

This commit attempts to improve in the following way:
repeat until convergence:
  loop over all filters
    find input link with exactly one format
    force this format on all output links of the same type (if possible)

It will be used for logging, possibly also AVOptions.

In v2.4, the length includes the length field itself.

This fixes a segfault where a video decoder was called
from avcodec_decode_audio*().

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

* qatar/master:
  apedec: check bits <= 32.
  cavs: Remove unused code.
  oggenc: fix condition when not to flush due to keyframe granule.
  oggenc: add pagesize option to set preferred page size
  libspeexdec: set frame size in libspeex_decode_init()
  smacker audio: sign-extend the initial 16-bit predicted value

Conflicts:
	libavcodec/apedec.c
	libavcodec/libspeexdec.c
	libavformat/oggenc.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

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

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

Fixes a floating-point exception further down.

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

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