opus/matroska: Adding support for DiscardPadding in muxer

Support for end trimming Opus in Matroska is implemented by using
the DiscardPadding container element in the Block data. The last
chunk is stored as a Block instead of SimpleBlock and the
trimming information is stored and used to discard samples that
were padded by the Opus codec. This patch adds support for muxing
DiscardPadding element into the container with appropriate value.
Matroska spec for the DiscardPadding element can be found here:
http://matroska.org/technical/specs/index.html#DiscardPadding

Signed-off-by: Vignesh Venkatasubramanian <vigneshv@google.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

avcodec/ffv1: YUVA(444,422,420) 9, 10 and 16 bit support

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

avcodec/ffv1dec: fix format detection

Fixes crash with carefuly designed files.

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

Move packed B-frames message level to info.

Since they generally decode fine, printing it as a warning
might not really be appropriate.

Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>

Make packed B-frame warning message more useful.

Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>

avcodec/ffv1enc: encode slice as raw PCM in 1.4 when the buffer is too small.

This limits the maximum size of encoded slices more tightly

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

avcodec/ffv1dec: Support decoding planes as raw PCM in 1.4

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

avcodec/ffv1enc: check encode_line()s return code

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

avcodec/ffv1enc: update buffer check for 16bps

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

avcodec/ffv1enc: fix size used for ff_alloc_packet2()

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

avcodec/util: Make size argument of ff_alloc_packet2() int64_t

This ensures that huge sizes dont get truncated before the check in ff_alloc_packet2()

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

avcodec/eatgv: use av_reallocp_array() and check return value

Fixes #2949.

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

avcodec/asfdec: check return value of av_mallocz()

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

avcodec/xwdenc: use AV_LOG_ERROR in error message

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

avcodec/bmpenc: return meaningful error code

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

avcodec/truemotion2: use av_reallocp_array() and check return value

Also reset tok_lens if reallocation fails.

Fixes #2946.

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

h264: do not discard NAL_SEI when skipping frames

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

lavu/ripemd: Add a size optimized version of the transform functions

When compiling with --enable-small, ripemd.o will weigh a few kilobytes less than
it used to before the previous commit.

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

lavu/ripemd: Fully unroll the transform function loops

crypto_bench RIPEMD-160 results using an AMD Athlon X2 7750+, mingw32-w64 GCC 4.8.1 x86_64

Before:
lavu       RIPEMD-160   size: 1048576  runs:   1024  time:   12.342 +- 0.199

After:
lavu       RIPEMD-160   size: 1048576  runs:   1024  time:   10.143 +- 0.192

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

lavc: don't show "Invalid and inefficient vfw-avi..." warning in mpeg4 parser

Only the actual decoder should print this warning.

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

avcodec/mjpegdec: fix shift_output() with lowres

Fixes Ticket2940

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

Merge remote-tracking branch 'cehoyos/master'

* cehoyos/master:
  libxvid: guess a good aspect when we cant store the exact one.

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

avcodec/proresdec2: return meaningful error codes

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

avcodec/ratecontrol: give some trivial tips in case of buffer underflows

See Ticket2725

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

libxvid: guess a good aspect when we cant store the exact one.

Based on 394781a8.

avcodec/truemotion2: use av_calloc() & av_malloc_array()

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

avcodec/truemotion2: Fix av_freep arguments

Fixes null pointer dereference
Fixes Ticket2944

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

avformat/avidec: fix signedness of pointer type in get_stream_idx()

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

avcodec/srtdec: fix potential overread.

avcodec/assenc: fix potential overread.

avformat/subtitles: support standalone CR (MacOS).

Recent .srt files with CR only were found in the wild.

avformat/subtitles: add a next line jumper and use it.

This fixes a bunch of possible overread in avformat with the idiom p +=
strcspn(p, "\n") + 1 (strcspn() can focus on the trailing '\0' if no
'\n' is found, so the +1 leads to an overread).

Note on lavf/matroskaenc: no extra subtitles.o Makefile dependency is
added because only the header is required for ff_subtitles_next_line().

Note on lavf/mpsubdec: code gets slightly complex to avoid an infinite
loop in the probing since there is no more forced increment.

avformat/srtdec: skip initial random line breaks.

I found a bunch of (recent) SRT files in the wild with 3 to 10 line
breaks at the beginning.

avcodec/png: remove obsolete comments

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

swscale/utils: use memcpy instead of loop in sws_cloneVec()

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

avformat/matroskaenc: remove bogus prores tag

Fixes: ffmpeg -i input -c:v prores output.mkv

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

lavd/v4l2: Improve debug message

In particular, print the standard supported by the selected input.
Additionally, use PRIx64 everywhere when printing standards.

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

avfilter/vf_psnr: refactor subsampled format support

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

avformat/subtitles: binary search seeking.

avformat/subtitles: check lower bound for duration overlap seeking.

avformat/vobsub: fix seeking.

Merge remote-tracking branch 'qatar/master'

* qatar/master:
  lavf: fix the comparison in an overflow check

Conflicts:
libavformat/utils.c

See: a5d67bc796e1f9a2b99b43ea807166b655e4bdbc
Merged-by: Michael Niedermayer <michaelni@gmx.at>

Merge commit '7ee191cab0dc44700f26c5784e2adeb6a779651b'

* commit '7ee191cab0dc44700f26c5784e2adeb6a779651b':
  dv: Add a guard to not overread the ppcm array

See: 3669915e93b3df63034857534245c3f2575d78ff
Merged-by: Michael Niedermayer <michaelni@gmx.at>

oMerge commit '85ac12587bfef970d0e0e4abc292df346daf8478'

* commit '85ac12587bfef970d0e0e4abc292df346daf8478':
  nuv: check ff_rtjpeg_decode_frame_yuv420 return value

Conflicts:
libavcodec/nuv.c

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

doc: add *install-doc that covers all documentation

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

avcodec/snowenc: fix constness of the AVFrame argument in encode_frame()

Some fields of the frame are changed to reflect encoder decissions like
if its a keyframe. It thus cannot be constant.

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

avfilter/vf_histeq: remove unused item from filter private context

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

vformat/tee: fix uninitialized use of ret

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

avfilter/vf_format: add .get_video_buffer back

Unbreak xyz12 with vflip.

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

doc: rename *install-doc to *install-html

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

doc: fix install-doc dependencies

Put it inside its own ifdef conditional.

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

avfilter/vf_rotate: fix 'oh' option description

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

avfilter: remove redundant .get_(audio/video)_buffer initializations

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

avfilter/af_asetnsamples: remove .needs_writable as it is not required

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

lavf: fix the comparison in an overflow check

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

dv: Add a guard to not overread the ppcm array

Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org

nuv: check ff_rtjpeg_decode_frame_yuv420 return value

CC: libav-stable@libav.org

avfilter/af_compand: silence "maybe uninitialized" warnings

if channels is 0 it actually would be uninitialized, thus an assert with comment is added

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

avfilter/af_aecho: silence "maybe uninitialized warning"

if channels is 0 it actually would be uninitialized, thus an assert with comment is added

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

lavu: provide msvc implementation of attribute_deprecated

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

lavfi/telecine: remove bitstream and pal formats

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

lavfi/fieldorder: work with non writtable frames too

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

lavfi/fieldorder: remove pal8 format

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

lavfi/fieldorder: add timeline support

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

lavfi/fieldorder: use av_image_fill_linesizes()

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

lavfi/fieldorder: remove redundant get_video_buffer()

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

s302m: s/bits_per_coded_sample/bits_per_raw_sample

bits_per_coded_sample should be set from demuxer and
not from decoder.

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

avcodec/xan: use uint8_t instead of unsigned char

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

pixfmt: add native GBRAP16 format

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

lavfi: Weston 3 Field Deinterlacing Filter

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

Merge remote-tracking branch 'qatar/master'

* qatar/master:
  avisynth: K&R formatting cosmetics

Conflicts:
libavformat/avisynth.c

Nothing changed as the avisynth code has been rewritten to
support avi/avxsynth in ffmpeg.
And the new code should be free of formating problems.

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

Merge commit '97b052e56807fab6887e9ba210a28a622e6a4b78'

* commit '97b052e56807fab6887e9ba210a28a622e6a4b78':
  avisynth: Add missing #include for NULL_IF_CONFIG_SMALL

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

Merge commit 'befe044bb9561c9d7d6559db06bba375e82a4b66'

* commit 'befe044bb9561c9d7d6559db06bba375e82a4b66':
  avcodec: Stop exporting the removed audio_resample* symbols

Conflicts:
libavcodec/libavcodec.v

Not merged as theres no pressing need to remove it now.

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

Merge commit '7f93a861aaf2e76fd63b53ccc465909873b8dc29'

* commit '7f93a861aaf2e76fd63b53ccc465909873b8dc29':
  mpeg12enc: K&R formatting cosmetics

Conflicts:
libavcodec/mpeg12enc.c

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

Merge commit '66f091053f11a8957b2175480d2f368d2cf4474c'

* commit '66f091053f11a8957b2175480d2f368d2cf4474c':
  mpeg12enc: drop forward declarations

Conflicts:
libavcodec/mpeg12enc.c

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

Merge commit 'c3e6e8f06c42499bd020fd0b37f9542150e6067b'

* commit 'c3e6e8f06c42499bd020fd0b37f9542150e6067b':
  mem: Do not check unsigned values for negative size

Conflicts:
libavutil/mem.c

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

Merge commit 'b634b36fcebfe16b837b6c4044f5d5cb99a75040'

* commit 'b634b36fcebfe16b837b6c4044f5d5cb99a75040':
  mem: Improve documentation wording and spelling

Conflicts:
libavutil/mem.c
libavutil/mem.h

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

avisynth: K&R formatting cosmetics

avisynth: Add missing #include for NULL_IF_CONFIG_SMALL

avcodec/mjpegdec: support >8bit in mjpeg_decode_scan_progressive_ac()

Fixes Ticket2812

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

avcodec/mjpegdec: move shift_output() to its own function

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

avcodec/mjpegdec: 12bit Grayscale support

Fixes part of Ticket2812

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

avcodec/mjpegdec: Fix normal jpeg with bits < 8

Untested due to lack of testcase

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

avcodec/mjpegdec fix last_dc for bits != 8

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

avcodec/dsputil: add 12bit simple idct

Will be needed for jpeg

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

lavfi/mp: remove mp=fil

The filter does not work correctly most of time.

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

avcodec: Stop exporting the removed audio_resample* symbols

lavfi/mp: remove mp=dint

There are better and actually maintained filters that have similar
functionality.

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

mpeg12enc: K&R formatting cosmetics

Signed-off-by: Diego Biurrun <diego@biurrun.de>

avfilter/vf_yadif: Treat mode as a field of flags

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

avfilter/vf_yadif: fix "incompatible pointer type" warning

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

avfilter/vf_yadif: add gbr(a)p support

Suggested-by: durandal_1707
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Merge remote-tracking branch 'qatar/master'

* qatar/master:
  matroskaenc: Allow chapters to be written in trailer

Conflicts:
libavformat/matroskaenc.c

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

mpeg12enc: drop forward declarations

Signed-off-by: Diego Biurrun <diego@biurrun.de>

mem: Do not check unsigned values for negative size

mem: Improve documentation wording and spelling

avcodec/mjpegdec: Simplify masking in ljpeg_decode_yuv_scan()

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

avcodec/mjpegdec: fix rgb ljpeg prediction 5/6/7 with point_transform

untested due to lack of sample

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

avcodec/mjpegdec: fix yuv ljpeg prediction 5/6/7 with point transforms

Fixes Ticket2826

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

avcodec/jpeg2000dec: make SOC finding code more robust

Fixes file from Ticket860

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