* 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: Michael Niedermayer <michaelni@gmx.at>

* commit '1e46c63e':
  avformat: refactor avformat_write_header

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

* commit '86bbdf86':
  avformat: refactor avformat_write_header

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

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

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

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

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

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

This way audio frames can be exactly stored even when they are not
aligned with timestamp 0
Signed-off-by: Michael 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: Derek Buitenhuis <derek.buitenhuis@gmail.com>

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

Split away option settings, sanity checks and general setup.

Mostly cosmetic changes adding some intermediate to shorten the lines.

This takes into account planar vs. packed when comparing to find the closest
sample format match.