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

This ensures that no stale pointers leak through on any path

Fixes: signal_sigsegv_c3097a_991_xtrem_e2_m64q15_a32sxx.3gp

Found-by: Samuel Groß, Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

Related to ticket #3823.

Fixes ticket #4690.

libavcodec/qsvenc.c: Fix for too agressive height alignment during frame encoding which may be reason of superflous frame copying.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

Build system modified

There are several warnings occurring during build after this patch is
applied. The cause of most of these warnings is in that some definitions
needed here are logical part of sbr module and are added in later patches.
When this patches are applied these warnings stop occurring.

The only warning that is added here and is not fixed with later patches
is warning that warns that type mismatch for table ff_aac_eld_window_480.

The reason for this warning is in that ER AAC ELD 480 is not integrated in
to the fixed point implementation at this moment and there is no fixed point
version of this table.
Signed-off-by: Nedeljko Babic <nedeljko.babic@imgtec.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Add fixed point implementation
Signed-off-by: Nedeljko Babic <nedeljko.babic@imgtec.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Add fixed point implementation of functions for generating tables
Signed-off-by: Nedeljko Babic <nedeljko.babic@imgtec.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Move existing code to the new template files
Signed-off-by: Nedeljko Babic <nedeljko.babic@imgtec.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

They are currently unnecessary
Found-by: James Almer <jamrial@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

* commit '84b223cc':
  configure: Make the new qsv encoder depend on libmfx

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

* commit 'd1a6cb19':
  x86: Serialize rdtsc in read_time()
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '40af330a':
  avconv: vda: Unlock the pixel buffer once it is accessed

See: c06fdaccMerged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '8fcd121b':
  doc: Use the succinct syntax for the channelmap example

Conflicts:
	doc/filters.texi
Merged-by: Michael Niedermayer <michaelni@gmx.at>

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

* commit '66acb76b':
  lavc: add Intel libmfx-based HEVC encoder

Conflicts:
	Changelog
	configure
	libavcodec/Makefile
	libavcodec/allcodecs.c
	libavcodec/qsv.c
	libavcodec/qsvenc.c
	libavcodec/version.h
Merged-by: Michael Niedermayer <michaelni@gmx.at>

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

* commit '3a85397e':
  lavc: add Intel libmfx-based MPEG2 encoder

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

* commit '69ab9f53':
  hevc: split bitstream unescaping to a separate file

Conflicts:
	libavcodec/Makefile
	libavcodec/hevc.c

See: afa93d19Merged-by: Michael Niedermayer <michaelni@gmx.at>

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

* commit 'fd124d83':
  hevc_ps: split the code for parsing the SPS and exporting it into the context

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

Reviewed-by: Michael Niedermayer <michaelni@gmx.at>
Signed-off-by: James Almer <jamrial@gmail.com>

* commit '0e7c0ec3':
  lavf/hevc: pad the RBSP buffer as required by the bistream reader
Merged-by: Michael Niedermayer <michaelni@gmx.at>

If init_get_bits fails the GetBitContext is invalid and must not be
used. Check the return value in dirac_header and propogate the error.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

For example, the encoder may return MFX_WRN_INCOMPATIBLE_VIDEO_PARAM warning
i.e. ret==5 old loop implementation will repeat several times until output buffer
overflow. New implementation explicitly uses loop only for device busy case.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

https://developer.apple.com/library/ios/documentation/AppleApplications/Reference/SafariWebContent/CreatingContentforSafarioniPhone/CreatingContentforSafarioniPhone.html

says video/mp4

suggested by BBB on irc.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

* commit '1761ab83':
  lavc: Deprecate avctx.rc_strategy

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

* commit '02b7c630':
  h261: Signal freeze picture release for intra frames

Conflicts:
	tests/ref/vsynth/vsynth1-h261
	tests/ref/vsynth/vsynth2-h261
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'dc1de0b9':
  h261: Set 'still image mode off' in picture header

Conflicts:
	tests/ref/vsynth/vsynth1-h261
	tests/ref/vsynth/vsynth2-h261
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'c8b82713':
  xcbgrab: Explicitly include xcb/shape.h

See: 54170a33Merged-by: Michael Niedermayer <michaelni@gmx.at>

Found-by: kropping

* commit '161a301d':
  mpjpeg: Write the Content-length

Conflicts:
	libavformat/mpjpeg.c

See: 0d2f4eedMerged-by: Michael Niedermayer <michaelni@gmx.at>

Improves the accuracy of measurements, especially in short sections.

To quote the Intel 64 and IA-32 Architectures Software Developer's Manual:
"The RDTSC instruction is not a serializing instruction. It does not necessarily
wait until all previous instructions have been executed before reading the counter.
Similarly, subsequent instructions may begin execution before the read operation
is performed. If software requires RDTSC to be executed only after all previous
instructions have completed locally, it can either use RDTSCP (if the processor
supports that instruction) or execute the sequence LFENCE;RDTSC."

SSE2 is a requirement for lfence so only use it on SSE2-capable systems.
Prefer lfence;rdtsc over rdtscp since rdtscp is supported on fewer systems.
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

Avoid possible issues with memmapped hardware buffers in
case VDA is not doing a conversion on behalf of the user
and make the code more proper as working example.

CC: libav-stable@libav.org
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

Mixing succinct and long syntax does not work.