Interruptibility of file operations is strongly desirable in case of
slow storage access, e.g. mounted network share.
This commit introduces possibility to limit data quantity transferred by
'file' protocol at once. By default, old behaviour is preserved and data
is still tried to be transferred without block size limitation.

Note that file I/O operation still may block (or even freeze) inside of
single read(2) or write(2) operation.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

The old implementation is unusable due to change in the Xvid API.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

* qatar/master:
  hls: Call avformat_find_stream_info() on the chained demuxers

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

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

Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Should fix Ticket2825
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

Signed-off-by: Stefano Sabatini <stefasab@gmail.com>

Fixes Ticket1616
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>

* qatar/master:
  Replace remaining obsolete PIX_FMT names with AV_PIX_FMT equivalents

Conflicts:
	libavcodec/g2meet.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '1f57d601':
  rtsp: Support RFC4570 (source specific multicast) more properly.
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '74972220':
  rtpproto: Support more than one SSM include address, support excludes

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

* commit '7d99c929':
  udp: Keep track of include and exclude sources separately

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

* commit '3357bccc':
  udp: Allow specifying multicast include/blocks as host names as well
Merged-by: Michael Niedermayer <michaelni@gmx.at>

This allows the chained demuxer (or more precisely, the lavf
utility code) to better fill in timestamps on packets from
these, especially for cases where one stream is a raw ADTS
stream.
Signed-off-by: Martin Storsjö <martin@martin.st>

* commit '0e8c6f22':
  avisynth: Fix a "AVISynth" vs. "AviSynth" struct name typo

Conflicts:
	doc/general.texi
	libavformat/avisynth.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '4822ee3c':
  configure: Detect AIX ar command instead of hardcoding it in the OS section
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '711c4da1':
  fate: Add tree test

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

* commit 'd99a2b6d':
  avutil/tree: Drop debug messages that clutter the output

Conflicts:
	libavutil/tree.c

Merge for metadata only, a better solution has been commited that allows the
debug output to be turned on and off
Merged-by: Michael Niedermayer <michaelni@gmx.at>

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

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

* commit '10db1a9b':
  avutil/tree: K&R formatting cosmetics

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

* commit 'c47037c7':
  fate: Add timefilter test
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '06205b5e':
  hls: Free packets when skipping packets when seeking
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'a2b7eeeb':
  hlsproto: Store all durations in AV_TIME_BASE

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

* commit 'c4419103':
  hls: Store all durations in AV_TIME_BASE

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

* commit 'e1d5b244':
  hls: Store first_timestamp in units of AV_TIME_BASE

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

* commit '55c4cba2':
  huffyuvenc: BGRA support

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

The code is no longer needed
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

This ensures that we dont write into one struct and read the other without
realizing that they arent identical.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

Add support for domain names, for multiple source addresses,
for exclusions, and for session level specification of addresses.
Signed-off-by: Martin Storsjö <martin@martin.st>

Signed-off-by: Martin Storsjö <martin@martin.st>