This fixes one of the potential races spotted by Helgrind.

* qatar/master:
  ARM: use numeric ID for Tag_ABI_align_preserved
  segment: Pass the interrupt callback on to the chained AVFormatContext, too
  ARM: bswap: drop armcc version of av_bswap16()
  ARM: set Tag_ABI_align_preserved in all asm files
Merged-by: NMichael Niedermayer <michaelni@gmx.at>

Some old assemblers still in use do not support named tags.
Signed-off-by: NMans Rullgard <mans@mansr.com>

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

The fate checksum change is due to the header size having been wrong.

Credit&Authorship for the code belongs to Justin Ruggles
Blame for bugs in this merging of the code belong to the Commiter
Commit message by Commiter
Signed-off-by: NMichael Niedermayer <michaelni@gmx.at>

Based on:
	commit e3718784
	Author: Justin Ruggles <justin.ruggles@gmail.com>
Signed-off-by: NMichael Niedermayer <michaelni@gmx.at>

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

Otherwise, the last byte of each stream is left uninitialized.
Signed-off-by: NNicolas George <nicolas.george@normalesup.org>
Signed-off-by: NMichael Niedermayer <michaelni@gmx.at>

Fixed Ticket1780
Signed-off-by: NMichael Niedermayer <michaelni@gmx.at>

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

This might not be needed at the moment, but it's good practice to
pass it to all chained AVFormatContexts, if it would happen to be
used there at a later point.
Signed-off-by: NMartin Storsjö <martin@martin.st>

This fixes 2 warnings
Signed-off-by: NMichael Niedermayer <michaelni@gmx.at>

This function causes several versions of armcc to miscompile code,
and the performance impact is small.
Signed-off-by: NMans Rullgard <mans@mansr.com>

All our ARM asm preserves alignment so setting this attribute
in a common location is simpler.  This removes numerous warnings
when linking with armcc.
Signed-off-by: NMans Rullgard <mans@mansr.com>

* qatar/master:
  ARM: fix Thumb PIC on Apple
  nut: add do {} while (0) to GET_V
  tiffenc: Check av_malloc() results.
  tiffenc: Simplify pixel format setup using AVPixFmtDescriptor.
  Use atexit() instead of defining a custom exit_program() interface.
  msvc: Fix detection of VFW & Avisynth required libs

Conflicts:
	ffmpeg.c
	ffmpeg_opt.c
	ffplay.c
	ffprobe.c
	ffserver.c
	libavcodec/tiffenc.c
Merged-by: NMichael Niedermayer <michaelni@gmx.at>

* commit '1e46c63e':
  avformat: refactor avformat_write_header

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

* commit '86bbdf86':
  avformat: refactor avformat_write_header

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

* commit '55f9037f':
  avformat: split muxing functions from util.c

Conflicts:
	libavformat/internal.h
	libavformat/utils.c
Merged-by: NMichael Niedermayer <michaelni@gmx.at>

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

* commit 'bfcd4b6a':
  adpcmdec: set AVCodec.sample_fmts
  twinvq: use planar sample format
  ralf: use planar sample format
  mpc7/8: use planar sample format
  iac/imc: use planar sample format
  dcadec: use float planar sample format
  cook: use planar sample format
  atrac3: use float planar sample format
  apedec: output in planar sample format
  8svx: use planar sample format

Conflicts:
	libavcodec/8svx.c
	libavcodec/dcadec.c
	libavcodec/mpc7.c
	libavcodec/mpc8.c
Merged-by: NMichael Niedermayer <michaelni@gmx.at>

* commit 'fd41cb43':
  avconv: improve sample format negotiation for decoder request
  Opus encoder using libopus
  mpegts: Drop pointless casting of hex_dump_debug arguments
  avformat: const correctness for av_hex_dump / av_hex_dump_log
  wmadec: Adjust debug printf argument length modifier

Conflicts:
	Changelog
	ffmpeg.c
	libavcodec/libopusdec.c
	libavcodec/version.h
Merged-by: NMichael Niedermayer <michaelni@gmx.at>

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

LDR with register offset and PC as base register is not available in
the Thumb instruction set so the addition must be done separately.
Signed-off-by: NMans Rullgard <mans@mansr.com>

Make it consistent with the other function-like macros.

Allow extensibility.

Option for Voice Activity Detection is added to speex encoder.

Speex detects non-speech periods and encodes them with just enough bits
to reproduce the background noise, aka ``comfort noise generation''.
Signed-off-by: NMichael Niedermayer <michaelni@gmx.at>

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

While a 25 fps stream can in general store frame durations in 1/25
units, this is not true for the timestamps. For example a 25fps
and a 25000/1001 fps stream when they are stored together might have
a matching 0 timestamp point but when for example a chapter from
this is cut the new start is no longer aligned. The issue gets
MUCH worse when the streams are lower fps, like 1 or 2 fps.

This commit thus makes the muxer choose a multiple of the
framerate as timebase that is at least about 20 micro seconds precise
Signed-off-by: NMichael Niedermayer <michaelni@gmx.at>

With this, when we use a finer timebase than neccessary to store
durations the demuxer still knows what the original timebase was.
Signed-off-by: NMichael Niedermayer <michaelni@gmx.at>

This way audio frames can be exactly stored even when they are not
aligned with timestamp 0
Signed-off-by: NMichael Niedermayer <michaelni@gmx.at>

Silence a GCC warning. A leftover of the disabled version is still
available in lavf/isom.c.

It should be vfw32.lib with MSVC.
Signed-off-by: NDerek Buitenhuis <derek.buitenhuis@gmail.com>

This needs to be accessible for libavfilter in the next commit.