Based on mjpeg code by Thilo Borgmann
Signed-off-by: James Almer <jamrial@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

This removes the initialization of 2 unused fields
The change was part of c1868e7e
but wasnt merged as the fields could still be used
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

The check could fail if avio_read() read less than requested
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

* qatar/master:
  lavf: make av_probe_input_buffer more robust

Conflicts:
	libavformat/utils.c

Not merged as it depends on previous buggy changes

See: e74cd2f4706f71da5e9205003c1d8263b54ed3fb
See: ececbedaMerged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '8b763628':
  lavf: use a fixed width type

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

* commit 'c1868e7e':
  lavf: simplify handling of offset in av_probe_input_buuffer()

Conflicts:
	libavformat/utils.c

The simplification is broken and does not work at least for ffmpeg,
thus this change is not merged.
Merged-by: Michael Niedermayer <michaelni@gmx.at>

Always use the actually read size as the offset instead of making
possibly invalid assumptions.

Addresses: CVE-2012-6618

It's shorter and more consistent with the rest of the code.

* commit '99e20125':
  x86/arm: Add clobber tests to libavresample
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '49b9badc':
  vc1: Enable the interlaced B-frame codepath.

See: 33f2a494Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '6d98959c':
  vc1: Add avg_no_rnd_vc1_chroma_mc4_c()

Conflicts:
	libavcodec/vc1dsp.c

See: dd6e291eMerged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'c798a6fe':
  vc1: Factorize out chroma MC
Merged-by: Michael Niedermayer <michaelni@gmx.at>

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

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

Needed for proper interlaced support.
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

Fixes null pointer dereference
Fixes: signal_sigsegv_e1d3b6_2192_DBLK_F_VIXS_2.bit
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

The T-REC-H.265-2013044 page 79 states they have to be into the range
[-s->sps->qp_bd_offset, 51].

Fixes: asan_stack-oob_eae8e3_9522_WP_MAIN10_B_Toshiba_3.bit
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

The tile 0 cannot depend on a previous one.
Prevent an out of array bound load in ff_hevc_cabac_init().

Fixes: asan_heap-oob_e3a924_1630_DBLK_A_MAIN10_VIXS_2.bit
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Reviewed-by: Guillaume Martres <smarter@ubuntu.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

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

16662 decicycles in loop_filter_h_16_16_c, 8387355 runs, 1253 skips
17510 decicycles in loop_filter_v_16_16_c, 8387516 runs, 1092 skips

4941 decicycles in ff_vp9_loop_filter_h_16_16_ssse3, 8387887 runs, 721 skips
3899 decicycles in ff_vp9_loop_filter_v_16_16_ssse3, 8387980 runs, 628 skips

Overall decode time goes from:
  ./ffmpeg -v 0 -nostats -threads 1 -i ~/samples/vp9/ped1080p.webm -f null -  8.10s user 0.02s system 99% cpu 8.126 total
to:
  ./ffmpeg -v 0 -nostats -threads 1 -i ~/samples/vp9/ped1080p.webm -f null -  6.15s user 0.04s system 99% cpu 6.199 total

(46 to 61 fps)

* qatar/master:
  vc1dsp: K&R formatting cosmetics

Conflicts:
	libavcodec/vc1dsp.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

See: "19:40 Yu Xiaolei Re: [FFmpeg-devel] [PATCH] fix build with gas-preprocessor.pl"
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

This reverts commit c8c7736c.

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

Improved DVB subtitles encoder to generate AVPacket.data in the same
format as generates MPEGTS demuxer + DVB subtitles parser. So now single
format of DVB subtitles data is used across all the components of FFmpeg:
only subtitles payload WITHOUT 0x20 0x00 bytes at the beginning and 0xFF
trailing byte.

Improved MPEGTS muxer to support format of DVB subtitles in
AVPacket.data described above: while muxing we add two bytes 0x20 0x00 to
the beginning of and 0xFF to the end of DVB subtitles payload.

The patch fixes DVB subtitle copy problems: tickets #2989 fully and #2024
partly.
Signed-off-by: Clément Bœsch <u@pkh.me>

Rely on frame_count. Also more consistent with audio path.

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

The src buffer should only contain values in the interval
[0, (1 << BIT_DEPTH) - 1]. Since shift = (BIT_DEPTH - 5), src[x] >> shift
must be in the interval [0, 31], so no clip is needed.

This removes the code that was changed in 5856bca3
as the clip that was repositioned in that commit is removed
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Fixes: asan_stack-oob_eae8e3_7333_WPP_B_ericsson_MAIN10_2.bit
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind

This is a more proper fix than 5856bca3

The reconstructed picture should always be clipped (see section 8.6.5),
previously we did not clip coding units where
cu_transquant_bypass_flag == 1
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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