lavc: introduce a new decoding/encoding API with decoupled input/output

Until now, the decoding API was restricted to outputting 0 or 1 frames
per input packet. It also enforces a somewhat rigid dataflow in general.

This new API seeks to relax these restrictions by decoupling input and
output. Instead of doing a single call on each decode step, which may
consume the packet and may produce output, the new API requires the user
to send input first, and then ask for output.

For now, there are no codecs supporting this API. The API can work with
codecs using the old API, and most code added here is to make them
interoperate. The reverse is not possible, although for audio it might.

From Libav commit 05f66706d182eb0c36af54d72614bf4c33e957a9.

Signed-off-by: Anton Khirnov <anton@khirnov.net>

avformat/utils: Remove use of caps_internal as it is not public API

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

avcodec: Add avpriv_codec_get_cap_skip_frame_fill_param()

With this the use of the caps_internal from libavformat can be avoided

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

avcodec/avpacket: Fix off by 5 error

Fixes out of array read
Fixes: mozilla bug 1266129
Found-by: Tyson Smith
Tested-by: Tyson Smith
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

avcodec/takdec: add code that got somehow lost in process of REing

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

x86inc: Enable AVX emulation in additional cases

Allows emulation to work when dst is equal to src2 as long as the
instruction is commutative, e.g. `addps m0, m1, m0`.

x86inc: Improve handling of %ifid with multi-token parameters

The yasm/nasm preprocessor only checks the first token, which means that
parameters such as `dword [rax]` are treated as identifiers, which is
generally not what we want.

x86inc: Fix AVX emulation of some instructions

x86inc: Fix AVX emulation of scalar float instructions

Those instructions are not commutative since they only change the first
element in the vector and leave the rest unmodified.

fate: add readvitc filter test

Signed-off-by: Tobias Rapp <t.rapp@noa-archive.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

fate: Add test for ticket 1833 (Ogg/Vorbis Chapters)

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

fate: Add test for mts2 (mss4) codec

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Merge commit '564b4591bbe223bdc5f36a1131eaef103f23f5d0'

* commit '564b4591bbe223bdc5f36a1131eaef103f23f5d0':
  opt: Add av_opt_copy()

Merged-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

Merge commit '8833f1508b7b6afc3172a8017934a7a54428c686'

This commit is a no-op.

* commit '8833f1508b7b6afc3172a8017934a7a54428c686':
  opt: Add const to av_opt_next

Merged-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

Merge commit '933dec0e29ec4d2cb83474279a6c52d62fdb7310'

* commit '933dec0e29ec4d2cb83474279a6c52d62fdb7310':
  file: Add an option for following a file that is being written

Merged-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

avcodec/tak_parser: fix parsing of streams with bunch of small frames at end

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

fate: Add test for 012v codec

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

fate: Add test for mss1 codec

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Merge commit 'ccea588f831906084b8c8235222920e6984beb72'

* commit 'ccea588f831906084b8c8235222920e6984beb72':
  avio: Add an option 'rw_timeout'

Merged-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

Merge commit 'd44f3e4059506a182f59218b1e967d42b01e097c'

* commit 'd44f3e4059506a182f59218b1e967d42b01e097c':
  avio: Apply avoptions on the URLContext itself as well

Merged-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

Merge commit '8a02a8031ef4f98faf5647f0e01a8922247bf748'

* commit '8a02a8031ef4f98faf5647f0e01a8922247bf748':
  lavfi: add an NVIDIA NPP-based scaling filter

Merged-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

Merge commit '98114d70e48caf871b0fe9b8e5bf8ebd989b845d'

* commit '98114d70e48caf871b0fe9b8e5bf8ebd989b845d':
  lavf: VAAPI scale filter

Merged-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

Merge commit '8bc4accc37ab047d2fd85d672c577b39dfc918e1'

This commit is a no-op. wm4 is working to get these into ffmpeg
proper, with ffmpeg versions of the patches.

* commit '8bc4accc37ab047d2fd85d672c577b39dfc918e1':
  lavf: use new decode API
  avconv: use new encode API
  avconv: use new decode API
  lavc: introduce a new decoding/encoding API with decoupled input/output

Merged-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

Merge commit '0d2fcdb1c5c9e844c232e5429130727121990d0e'

These commits are no-ops. Not going to merge these since our opt
tests are more complex, and have several blocks with different
options.

* commit '0d2fcdb1c5c9e844c232e5429130727121990d0e':
  opt-test: Merge struct declaration and initialization
  opt-test: Move some variable declarations to avoid block braces

Merged-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

avcodec/dump_extradata_bsf: Add back 'k' and 'e' options

broken since af9cac1be1750ecc0e12c6788a3aeed1f1a778be

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

avcodec/remove_extradata_bsf: Add back 'k' and 'e' options

broken since af9cac1be1750ecc0e12c6788a3aeed1f1a778be

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

avcodec/bitstream_filter: Fix initializing options from the argument string

Fixes ffmpeg ... -vbsf noise=234 ...

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

avcodec/intrax8: Remove duplicated chunk from ba5bcf96124a4933eef170dfe7955809d8d54a64

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

lavc/fic: Cosmetics, fix a typo.

Found by Moritz Barsnick

lavfi/perspective: Add basic timeline editing.

Add number of input and output frames to possible variables.
Add option eval to reevaluate coordinate expressions during
initialization or for every frame.

Merge commit 'a84713e70d06238100cb0f867ad6031c272054b0'

This commit is a no-op.

* commit 'a84713e70d06238100cb0f867ad6031c272054b0':
  parseutils-test: Move some variable declarations to avoid block braces

Merged-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

lavc/webp: Print a warning for unsupported chunks.

Merge commit '52385410b7de012c2562fb5ba8f07a4e1112c4e7'

* commit '52385410b7de012c2562fb5ba8f07a4e1112c4e7':
  des-test: Move a variable declaration to avoid an ifdef

Merged-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

Merge commit '65a802401c6cc136576bb2e613c0577cbf622aa8'

* commit '65a802401c6cc136576bb2e613c0577cbf622aa8':
  build: Add component for the SRTP common code

Merged-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

Merge commit '30e9ef21cea09fa5e880e979c9f5b39edccbb6f4'

* commit '30e9ef21cea09fa5e880e979c9f5b39edccbb6f4':
  timefilter-test: Only compile timefilter-test if JACK is enabled

Merged-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

Merge commit '48362ceadeb2eb5286ae94ef7f9542d990ff7ec7'

* commit '48362ceadeb2eb5286ae94ef7f9542d990ff7ec7':
  doc: Update paths to match new examples location

Merged-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

Merge commit '8dead2aaca4aa8b84b77b05745755afb56b7d37a'

* commit '8dead2aaca4aa8b84b77b05745755afb56b7d37a':
  Move const qualifier before type name

Merged-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

Merge commit 'd909f43b5c773a73c8d526638744547ba4aa8c59'

* commit 'd909f43b5c773a73c8d526638744547ba4aa8c59':
  vc1dec: wmv2dec: Validate ff_intrax8_common_init return value

Merged-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

Merge commit '0372e73f917e72c40b09270f771046fc142be4a7'

* commit '0372e73f917e72c40b09270f771046fc142be4a7':
  intrax8: Check and propagate errors from ff_intrax8_common_init

Merged-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

Merge commit 'ad8aa8e6c648b61f01b9f106f27b9d4f3d094345'

* commit 'ad8aa8e6c648b61f01b9f106f27b9d4f3d094345':
  intrax8: Move documentation from implementation to header file

Merged-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

Merge commit '2ade1cdafb96bf47e77f7ed74731d78a30aae950'

* commit '2ade1cdafb96bf47e77f7ed74731d78a30aae950':
  intrax8: K&R formatting cosmetics

Merged-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

Merge commit '6f5ff559dbd01fa4ea96bc0a1d2e0c21f2db8d13'

* commit '6f5ff559dbd01fa4ea96bc0a1d2e0c21f2db8d13':
  intrax8: Adjust printf conversion specifier for sizeof expression

Merged-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

Merge commit '42244ce07a1f4f5108ae86d50fe72db785d483ed'

* commit '42244ce07a1f4f5108ae86d50fe72db785d483ed':
  intrax8: Move a comment to the place it corresponds

Merged-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

Merge commit '750562549ceef268b29b94f6a887d9cf331a8c78'

* commit '750562549ceef268b29b94f6a887d9cf331a8c78':
  intrax8: Wrap multiline macros in do{}while(0) clauses

Merged-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

Merge commit '0c6a70873fc6e43194b471d112c30823b6c8d0b4'

* commit '0c6a70873fc6e43194b471d112c30823b6c8d0b4':
  intrax8: Move error resilience out of intrax8

Merged-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

Merge commit '709c0f79d8032fcf733bfe58e79ca7ff0858c8bc'

* commit '709c0f79d8032fcf733bfe58e79ca7ff0858c8bc':
  nuv: Use the correct context for av_image_check_size

Merged-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

Merge commit '64250d94b74d3fd47cc8b1611f48daf6a6ed804a'

* commit '64250d94b74d3fd47cc8b1611f48daf6a6ed804a':
  indeo4: Consistently initialize variables

Merged-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

Merge commit '6202e2fede75df92cbc374a3f7d6893d0c5ac721'

* commit '6202e2fede75df92cbc374a3f7d6893d0c5ac721':
  indeo4: Rework stream analysis report

Merged-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

Merge commit '4426540f0c3ee516662f79d0a6ab5b95503b6611'

This commit is a no-op. We will do this when we convert ffmpeg.c

* commit '4426540f0c3ee516662f79d0a6ab5b95503b6611':
  avconv: switch to the new BSF API

Merged-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

Merge commit '33d18982fa03feb061c8f744a4f0a9175c1f63ab'

* commit '33d18982fa03feb061c8f744a4f0a9175c1f63ab':
  lavc: add a new bitstream filtering API

Conversions-by: Hendrik Leppkes <h.leppkes@gmail.com>
Conversions-by: Derek Buitenguis <derek.buitenhuis@gmail.com>
Merged-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

avfilter/vf_readvitc: Use avpriv_frame_get_metadatap() avoid direct access to AVFrame.metadata (to comply to API)

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

vp9: ignore frame_context_index field in key-/intraonly-frames.

Reproduces a bug to remain consistent with libvpx' behaviour.

vf_scale: support bt2020 in in/out_color_matrix properties.

avfilter/colorspacedsp_template: Add argument protecting () to avg()

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

avcodec/takdec: fix decoding of some sample rates with multichannel coder

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

avcodec/h264: Fix for H.264 configuration parsing

Sometimes video fails to decode if H.264 configuration changes mid stream.
The reason is that configuration parser assumes that nal_ref_idc is equal to 11b
while actually some codecs but 01b there. The H.264 spec is somewhat
vague about this but it looks like it allows any non-zero nal_ref_idc for sps/pps.

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

avformat/hashenc: add missing avio_flush to hash_write_trailer

It was accidentally deleted in the previous hashenc commit

Signed-off-by: James Almer <jamrial@gmail.com>

avcodec/exr: Fix "libavcodec/exr.c:1494:13: warning: ISO C90 forbids mixed declarations and code"

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

fate: add test for Ticket4816 (PNG decoding with alpha)

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

vc2enc: use 32x16 slices by default

Approximately 1.25 times faster than 64x32, visually and
statistically improves quality.

Signed-off-by: Rostislav Pehlivanov <atomnuker@gmail.com>

vc2enc: don't require interlacing for 1080p50/60 base video formats

Typo

Signed-off-by: Rostislav Pehlivanov <atomnuker@gmail.com>

avfilter: add readvitc filter

Add a filter to scan the top lines of video frames for vertical interval
timecode (VITC) information and attach it as metadata keys.

Signed-off-by: Tobias Rapp <t.rapp@noa-archive.com>

avfilter/af_hdcd: Fix informations typo

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

avformat/matroskaenc: Undo bits_per_coded_sample change as bits_per_raw_sample is available again

Reminded-by: James Almer
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

lavf/bink: Cosmetics: Reindent after last commit.

lavf/bink: Support Monkey Island 4 (SMUSH) files.

Fixes ticket #5410.

lavc/dds: Fix GRAY8A decoding.

Fixes ticket #4667.

avcodec/avcodec: Document signed/unsignedness of sample formats in relation to bits_per_raw_sample

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

avcodec/utils: Add braces to framecount computation

Suggestes-by: ubitux
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

avcodec/utils: Fix duration of ATRAC3 packets

Fixes ticket1680

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

lavfi/af_hdcd: Implement high definition audio cd filtering.

Fixes ticket #4441.

avformat/hashenc: simplify hash_write_trailer

Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: James Almer <jamrial@gmail.com>

avcodec: Add bits_per_raw_sample to AVCodecParameters

The bits_per_raw_sample represents the number of bits of precision per sample.

The field is added at the logical place, not at the end as the code was just
recently added

This fixes the regression about losing the audio sample precision information

The change in the fate test checksum un-does the change from the merge

Previous version reviewed by: wm4 <nfxjfg@googlemail.com>
Previous version reviewed by: Dominik 'Rathann' Mierzejewski <dominik@greysector.net>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

avformat/yop: alloc codecpar extradata only once

Fixes memleak

Signed-off-by: James Almer <jamrial@gmail.com>

avcodec/ralf: add support for mono

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

avcodec/atrac3: pass AVCodecContext to av_log if available

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

avformat: add AVFormatContext to ff_get_extradata()

Needed for av_log() inside that function.

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

avcodec/bmp_parser: Ensure remaining_size is not too small in startcode packet crossing corner case

Fixes Ticket 5438

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Merge commit 'a2d1922bde8db2cdac95051918fe81ae18c0376b'

This commit is a no-op.

* commit 'a2d1922bde8db2cdac95051918fe81ae18c0376b':
  takdec: ensure chan2 is a valid channel index

Merged-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

Merge commit '9765549f551ff40869aee1a6492b6a976c86cfe9'

* commit '9765549f551ff40869aee1a6492b6a976c86cfe9':
  mpegts: Forward the errors on mpeg4 objects parsing

Merged-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

Merge commit '07a844f32ebb78503981df017fa3ebfedb75fe1c'

* commit '07a844f32ebb78503981df017fa3ebfedb75fe1c':
  lavfi: generic hardware surface upload and download filters

Merged-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

Merge commit '551c6775abb5e0ad34c26d7e23bc6fbbe8ccc9d4'

* commit '551c6775abb5e0ad34c26d7e23bc6fbbe8ccc9d4':
  lavu: VAAPI hwcontext implementation

Merged-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

Merge commit 'd264c720f7b74286840719e506daba39f83b438b'

* commit 'd264c720f7b74286840719e506daba39f83b438b':
  lavu: deprecate AV_PIX_FMT_VAAPI_*, replace with AV_PIX_FMT_VAAPI

Merged-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

Merge commit 'b1f01e85a92d401a9b29c79f23db36b7685e8c09'

* commit 'b1f01e85a92d401a9b29c79f23db36b7685e8c09':
  lavu: add a way to query hwcontext frame constraints

Merged-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

Merge commit '1098f5c0495c61a98d4ff6b8e24c17974d4bace5'

* commit '1098f5c0495c61a98d4ff6b8e24c17974d4bace5':
  svq3: Use a separate buffer for decoding the slices

Merged-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

avformat/framehash: enable new output

Also, make every addition except for sidedata part of version 1 instead of the
new version 2.

Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>

avformat/framehash: add sidedata checksum

Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: James Almer <jamrial@gmail.com>

avformat/tee: Refactor close_slaves function in tee muxer

Closing single slave operation is pulled out into separate
function close_slave(TeeSlave*).
Both close_slave and close_slaves function are moved before
open_slave function.

Reviewed-by: Nicolas George <george@nsup.org>
Signed-off-by: Jan Sebechlebsky <sebechlebskyjan@gmail.com>
Signed-off-by: Marton Balint <cus@passwd.hu>

avformat/dump: Fix sign bug in reported "start" time

Previously, the bug was that if -1 < start_time < 0, the reported
"start" time would lose the negative-sign.

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

avcodec/wmalosslessdec: improve 24bit support

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

avcodec/wmalosslessdec: improve >2 channel support

Before it worked for stereo files only.

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

tests/checkasm/vf_colorspace: Make bpp_mask const

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

doc/demuxers: fix "Quicktme" typo

Signed-off-by: Lou Logan <lou@lrcd.com>
Found-by: furq

avformat/framehash: add extradata checksum

Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: James Almer <jamrial@gmail.com>

avformat/framecrc: enable new output

Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: James Almer <jamrial@gmail.com>

Merge commit '2f4a1bb9bfb29112711ba904e1dc0dd58e24f361'

This commit is a no-op.

* commit '2f4a1bb9bfb29112711ba904e1dc0dd58e24f361':
  cmdutils: update copyright year to 2016

Merged-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

Merge commit '8b4b1c1eea9daa4e2003aa0935e73f56aab8102d'

This commit is a no-op.

* commit '8b4b1c1eea9daa4e2003aa0935e73f56aab8102d':
  matroska: Support V_QUICKTIME as written in the specification

Merged-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

Merge commit '92c1a83ee9394b39d68f6affd9104752a03714f8'

* commit '92c1a83ee9394b39d68f6affd9104752a03714f8':
  qsv: Fix loading multiple plugins

Merged-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

Merge commit '7e01d48cfd168c3dfc663f03a3b6a98e0ecba328'

* commit '7e01d48cfd168c3dfc663f03a3b6a98e0ecba328':
  mov: Check the entries value when parsing dref boxes

Merged-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

Merge commit '59b9d2f684f1ff66627ca2b7d2dd05771ade62f0'

* commit '59b9d2f684f1ff66627ca2b7d2dd05771ade62f0':
  configure: Add support for clang llvm-cov

Merged-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>