Fixes mixed flushing and decoding NULL packets
Found-by: wm4
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Fixes hypothetical integer overflows
Related to CID1135770 & CID1135771
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

This is currently redundant as the checks before it are tighter than
the checks in ff_set_dimensions() but its more robust not to depend
on that.

Fixes CID1135739
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Fixes CID1135765
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

- Try reading the time_base information from the VPS too, not just the VUI
- Only set time_base when an SPS is activated, not when it's decoded.
- Reduce the fraction before setting it.
- Don't set anything if the fraction is invalid (because the VUI is not
  present or because the encoded value is invalid).

Conflicts:
	libavcodec/hevc_ps.c
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

significantly improves compression rate

This also bumps version to 2 and drops support for version 0/1
If someone used version 0/1 despite their experimental status then support
for these can and should be added back
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>

* qatar/master:
  configure: Move log2 dependency declaration to a place it takes effect
Merged-by: Michael Niedermayer <michaelni@gmx.at>

It was incorrectly moved in c869fcde.

Reviewed-by: James Zern <jzern@google.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

0-0.7% improved compression
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

* qatar/master:
  configure: Split host and target libc detection

Conflicts:
	configure
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'c869fcde':
  configure: Move toolchain dependency declarations to a more appropriate place
Merged-by: Michael Niedermayer <michaelni@gmx.at>

avcodec/utils: check that extended data has been set correctly instead of forcing it in avcodec_decode_video2()
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

AVFrames cannot be copied literally, their definition is in
avutil and their extended_data can point to their data[]
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

Fixes ticket #3211.

* qatar/master:
  hevc: parse frame packing arrangement SEI messages and save relevant stereo3d information

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

* commit '3d1d1753':
  mpeg12enc: set frame packing information when relevant metadata is found

Conflicts:
	libavcodec/mpeg12enc.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'bacc2869':
  mpeg12dec: parse frame packing arrangement user_data and save relevant stereo3d information
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '09cb75cd':
  libx264: set frame packing information when relevant information is found

Conflicts:
	libavcodec/libx264.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '5b10ef72':
  h264: parse frame packing arrangement SEI messages and save relevant stereo3d information

Conflicts:
	libavcodec/h264.c
	libavcodec/h264_sei.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '7e244c68':
  avframe: add codec-independent stereoscopic metadata

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

Reviewed-by: Wei Gao <highgod0401@gmail.com>
Reviewed-by: Stefano Sabatini <stefasab@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'd64341e4':
  configure: Prefix libc-related variables with "libc_"

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

* cehoyos/master:
  Fix remuxing of IMA_QT in mov.
  Do not detect "00000000..." (and other non-changing values) as adp.
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '61b203ff':
  configure: detect Solaris libc
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '9b8d11a7':
  avcodec: Use av_reallocp where suitable

Conflicts:
	libavcodec/bitstream.c
	libavcodec/eatgv.c
	libavcodec/flashsv.c
	libavcodec/libtheoraenc.c
	libavcodec/libvpxenc.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'd4f1188d':
  dv: use AVFrame API properly

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

* commit 'c9ca220e':
  ac3dec: make drc_scale exponentially
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '37a74901':
  lavc: rework handling of refcounted_frames=0

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

* commit 'df7aba52':
  frame: cosmetics, reindent

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