Avoid buffer overruns when processing some MOV files with the amerge
filter. Files produced by Adobe Premiere Pro CC have up to one second of audio
not interleaved. With common settings (<= 48kHz) that makes up to 47 frames so
a queue length of 64 makes sense.

Fixes ticket #3510.
Reviewed-by: Nicolas George <george@nsup.org>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

Before:
179436 decicycles in rgb, 32735 runs, 33 skips
Stripped object size: 23188

After:
154861 decicycles in rgb, 32738 runs, 30 skips
Stripped object size: 22736
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

When the joint table does not contain a valid entry, the decoding restarts
from scratch. By implementing the trick of jumping to the 2nd level of the
individual table (and inlining the whole), a speed improvement of 5-10%
is possible.

On a 1000-frames YUV4:2:0 video, before:
362851 decicycles in 422, 262094 runs, 50 skips
182488 decicycles in gray, 262087 runs, 57 skips
Object size: 23584
Overall time: 8.377

After:
346800 decicycles in 422, 262079 runs, 65 skips
168197 decicycles in gray, 262077 runs, 67 skips
Object size: 23188
Overall time: 7.878
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

* commit '95b7fa17':
  oggenc: Support flushing the muxer

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

* commit 'd5a55981':
  build: check if AS supports the '.func' directive
Merged-by: Michael Niedermayer <michaelni@gmx.at>

This allows the caller to write all buffered data to disk, allowing
the caller to know at what byte position in the file a certain
packet starts (any packet written after the flush will be located
after that byte position).
Signed-off-by: Martin Storsjö <martin@martin.st>

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

Fixes Ticket3670
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Fixes: Ticket3652
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

maybe 0.3% faster and simpler code

about 2 cycles (~1%) faster lag_get_rac()
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Only the xy2 functions aren't.
Signed-off-by: James Almer <jamrial@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

It was instead using the highest available asm functions, which completely
kills the point of being a reference C context.
Signed-off-by: James Almer <jamrial@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

* cehoyos/master:
  Fix fate-aac-ln-encode with --target-path (second try).
Merged-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Timothy Gu <timothygu99@gmail.com>
Several bugfixes by: Christophe Gisquet <christophe.gisquet@gmail.com>
See: [FFmpeg-devel] [WIP] [PATCH 4/4] x86: dsputilenc: convert hf_noise*_mmx to yasm
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

This gives a >50% speed up when encoding with libopenjpeg.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Lou Logan <lou@lrcd.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

This fixes the interactively enabled encoder debug by pressing 'D'
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

* commit '896a5bff':
  arm: check if AS supports .dn

Conflicts:
	configure
	libavcodec/arm/vc1dsp_init_neon.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '68a06b3a':
  aarch64: use '#' for whole line asm comments
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '6a0fa4d8':
  aarch64: remove optional :pg_hi21: for adrp instruction
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'fd2981ea':
  aarch64: add darwin style PAGE/PAGEOFF relocations
Merged-by: Michael Niedermayer <michaelni@gmx.at>

Fixes memleak on seeking
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

Found-by: Clément Bœsch <u@pkh.me>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Reviewed-by: Clément Bœsch <u@pkh.me>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

We cannot use avpriv_request_sample() as this is private to the libs
or rather it would be a bad usage example
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

It seems working without this now for the files i tested it with, if this causes
a regression, dont hesitate to put the line back or open a ticket or fix (if possible)
the parser
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

Not supported by Clang's integrated assembler. Since it just adds
debug information it can safely omitted.

Move the GNU as check before the arch specific asm checks since the .dn
check requires gas compatible assembler.

Disable the VC-1 motion compensation NEON asm which is the only part
using that directive. The integrated assembler in the upcoming clang 3.5
does not support .dn/.qn without plans to change that. Too much effort
to implement it while it is rarely used.

http://llvm.org/bugs/show_bug.cgi?id=18199.

Both gnu as and clang treat lines starting with '#' as comments if they
aren't consumed by the C-style preprocessor.
Using '//' does not work with clang since comments are removed before
macro expansion.

Clang's integrated assembler does not support it.