avcodec/snow: fix support for odd dimensions

Fixes Ticket3914

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

avcodec/jpeglsdec: support PAL1-PAL7

Fixes Ticket3933

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

avfilter/vf_signalstats: Change enum to int, which is accessed via AVOption as int

This fixes depending on implementation defined behavior

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

avfilter/vf_setfield: Change enum to int, which is accessed via AVOption as int

This fixes depending on implementation defined behavior

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

Revert "avformat/flvenc: Allow muxing video codecs which are not explicitly supported by the muxer"

This commit has no known use case ATM as there are no unsupported video codecs in flv and could
theoretically be use to generate broken files allthough that would be not entirely easy as
tags/codecs still get sanity checked

This reverts commit 76f4b117807c30a528539fc5c7a7e35cb288cfcf.

avformat/flvenc: Allow muxing video codecs which are not explicitly supported by the muxer

This allows stream copying video codecs before they are explicitly
supported. The same feature was in the past useful for audio codecs
in flv

This partly reverts the changes from 735ab7c5e04e2316afbd56643c13de17a7ac89cd

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

avcodec/h264_cavlc: Drop local_ref_count

This basically switches to the implementation from f6f7d1504134683c435e2c7d804279d982e52bb4
which seems faster

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

avcodec/h264_cabac: Drop local_ref_count

7966 -> 7897 decicycles

This basically switches to the implementation from f6f7d1504134683c435e2c7d804279d982e52bb4
which seems faster

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

Merge commit 'cfe64613923a2d47644a87386146ada1f9f6b659'

* commit 'cfe64613923a2d47644a87386146ada1f9f6b659':
  avfilter: Document avfilter_graph_alloc return value

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

Merge commit '27aa1ff35a13bc471c6e0a9cc496ec3f62f1574f'

* commit '27aa1ff35a13bc471c6e0a9cc496ec3f62f1574f':
  oggdec: Check memory allocation

Conflicts:
libavformat/oggdec.c

See: 9b8152bf047bbebe4495b993258591687bcdd36d an others
Merged-by: Michael Niedermayer <michaelni@gmx.at>

Merge commit '93c1b04abfc0dd31211a18bf2c0041d69cd16919'

* commit '93c1b04abfc0dd31211a18bf2c0041d69cd16919':
  mms: Check memory allocation

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

Merge commit 'd450cb07d91ef39ad1d39bd7ca0cfce4bd7b13e7'

* commit 'd450cb07d91ef39ad1d39bd7ca0cfce4bd7b13e7':
  avplay: Check memory allocation

Conflicts:
ffplay.c

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

Merge commit 'd3aa307da076e8820298b2c59ec5d6ff01a5e374'

* commit 'd3aa307da076e8820298b2c59ec5d6ff01a5e374':
  rmenc: Check memory allocation

See: 56838103020385020469d1da076f0e4a6cbe15e5
Merged-by: Michael Niedermayer <michaelni@gmx.at>

Merge commit '7ebb3022297aa00afda6800105684b8303f2608e'

* commit '7ebb3022297aa00afda6800105684b8303f2608e':
  swscale: Check memory allocation

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

avcodec/h264.h: Drop unused macro

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

avcodec/h264_slice: update slice context linesizes when a new picture is allocated

previously they where only updated when decoding started and would thus have
been inconsistent for a longer period of time leaving more chances for
problems

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

avfilter: Document avfilter_graph_alloc return value

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

oggdec: Check memory allocation

Bug-Id: CID 1257798 / CID 1257805

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

mms: Check memory allocation

Bug-Id: CID 1258462

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

avplay: Check memory allocation

Bug-Id: CID 1288294

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

rmenc: Check memory allocation

Bug-Id: CID 1257832

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

swscale: Check memory allocation

Bug-Id: CID 1267890
CC: libav-stable@libav.org
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

Merge commit 'c28ed1d743443e783537d279ae721be3bbdf7646'

* commit 'c28ed1d743443e783537d279ae721be3bbdf7646':
  h264: move [uv]linesize to the per-slice context

Conflicts:
libavcodec/h264_mb.c
libavcodec/h264_slice.c

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

Merge commit 'b53569e0681ff7bc99103ab4c961dbac3cc0fce6'

* commit 'b53569e0681ff7bc99103ab4c961dbac3cc0fce6':
  h264_cabac: remove now unnecessary H264Context function parameters

Conflicts:
libavcodec/h264_cabac.c

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

Merge commit 'a12d3188cbec15e22070e139fa5cc541da07e2c3'

* commit 'a12d3188cbec15e22070e139fa5cc541da07e2c3':
  h264: use a smaller struct for the ref lists

Conflicts:
libavcodec/h264_direct.c
libavcodec/h264_mb.c
libavcodec/h264_picture.c
libavcodec/h264_refs.c

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

Merge commit '94295106d20b32666a8c4e0d028ef79b9d3f3b7a'

* commit '94295106d20b32666a8c4e0d028ef79b9d3f3b7a':
  h264_mb: remove an unused function parameter

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

Merge commit '2b4c38d3c647f409080606ef02b3363ada00be2c'

* commit '2b4c38d3c647f409080606ef02b3363ada00be2c':
  h264: drop some mpegvideo remnants from draw_horiz_band()

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

Merge commit '5bf3c0fa49afd5bbf43aa841ff78007d72c80736'

* commit '5bf3c0fa49afd5bbf43aa841ff78007d72c80736':
  h264: drop the now unused per-slice H264Contexts

Conflicts:
libavcodec/h264_slice.c

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

Merge commit '51d8725a6e4c7f989d6f0f38b59cb54a2d72846c'

* commit '51d8725a6e4c7f989d6f0f38b59cb54a2d72846c':
  h264: use the main H264Context as the parent for all slice contexts

Conflicts:
libavcodec/h264.c
libavcodec/h264.h
libavcodec/h264_slice.c

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

Merge commit '92e0b7342c0490894cbcea4461380321e0569de2'

* commit '92e0b7342c0490894cbcea4461380321e0569de2':
  h264_slice: constify all the uses of H264Context during slice decoding

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

vp9: make above buffer pointer 32-byte aligned.

Fixes ticket #4383

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

Merge commit '3178f4d33ff62243f7cdddb081db516ea34396c9'

* commit '3178f4d33ff62243f7cdddb081db516ea34396c9':
  h264: move rbsp_buffer into the per-slice context

Conflicts:
libavcodec/h264.c
libavcodec/h264_parser.c
libavcodec/h264_slice.c

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

Merge commit '582683b6ac798ed2a004a4e2121b7bd47892bbfd'

* commit '582683b6ac798ed2a004a4e2121b7bd47892bbfd':
  h264: move remaining ER stuff into the per-slice context

Conflicts:
libavcodec/h264.h
libavcodec/h264_picture.c
libavcodec/h264_slice.c

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

avcodec/mpegvideo: support mbskip_table==NULL in ff_print_debug_info2()

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

avcodec/error_resilience: Fix mbskip_table==NULL codepath

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

Merge commit '5bc69f38c1af71fbcbfb4b5efa77d0aeb5424c04'

* commit '5bc69f38c1af71fbcbfb4b5efa77d0aeb5424c04':
  error_resilience: do not require mbintra/skip tables

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

Merge commit 'c377e04d8aa74d030672e9a4788a700b0695fc14'

* commit 'c377e04d8aa74d030672e9a4788a700b0695fc14':
  h264: move top_borders into the per-slice context

Conflicts:
libavcodec/h264.c

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

Merge commit '36d04801ba9d8622c2d759c172aea18561bac74d'

* commit '36d04801ba9d8622c2d759c172aea18561bac74d':
  h264: move the scratch buffers into the per-slice context

Conflicts:
libavcodec/h264.h
libavcodec/h264_slice.c
libavcodec/svq3.c

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

Merge commit '34d4c605e9a5116d5289b35633ade5b01cacab24'

* commit '34d4c605e9a5116d5289b35633ade5b01cacab24':
  h264_loopfilter: constify all uses of H264Context

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

Merge commit '7505c8dfba255f8e6c6dbb574d0cec91da16f24d'

* commit '7505c8dfba255f8e6c6dbb574d0cec91da16f24d':
  h264_cavlc: constify all uses of H264Context

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

Merge commit 'ba7e165b864d69da4f0c79ec7757cb351535002f'

* commit 'ba7e165b864d69da4f0c79ec7757cb351535002f':
  h264_cabac: constify all uses of H264Context

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

Merge commit '5c4b98de4d101ea715ef86847306a510afd0db0c'

* commit '5c4b98de4d101ea715ef86847306a510afd0db0c':
  h264.c: constify all uses of H264Context in slice and lower-level functions

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

Merge commit 'e9b2383bf86b38ad18a001801aee20c8182e29bd'

* commit 'e9b2383bf86b38ad18a001801aee20c8182e29bd':
  h264: move mb_mbaff into the per-slice context

Conflicts:
libavcodec/h264_cabac.c
libavcodec/h264_cavlc.c
libavcodec/h264_slice.c

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

Merge commit 'bc98e8c0e0a8babfea35c98855e366b29cbe1191'

* commit 'bc98e8c0e0a8babfea35c98855e366b29cbe1191':
  h264: move mb_field_decoding_flag into the per-slice context

Conflicts:
libavcodec/h264_slice.c

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

Merge commit '6490a0c0fbe0e55f765ea2aa2e8495181ea1f719'

* commit '6490a0c0fbe0e55f765ea2aa2e8495181ea1f719':
  h264_mb: constify all uses of H264Context

Conflicts:
libavcodec/h264.h
libavcodec/h264_mb.c

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

Merge commit '51822879e7732ee8175dad98dde1a135f6e5c1a4'

* commit '51822879e7732ee8175dad98dde1a135f6e5c1a4':
  h264_mb: constify block_offset

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

Merge commit '3bea6409a1868354a1d29b34de424c3636c222b7'

* commit '3bea6409a1868354a1d29b34de424c3636c222b7':
  h264_mvpred: constify all uses of H264Context

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

Merge commit '460176aa19acb8d8bdb52af1ec97891e0f65843c'

* commit '460176aa19acb8d8bdb52af1ec97891e0f65843c':
  h264.h: constify all uses of H264Context

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

Merge commit 'd27b8248a6ee7e64c68c46c23e00d703b9caa50c'

* commit 'd27b8248a6ee7e64c68c46c23e00d703b9caa50c':
  h264_direct: constify all uses of H264Context

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

Merge commit 'f42485dbce614b3f63182845da43db690b427b7c'

* commit 'f42485dbce614b3f63182845da43db690b427b7c':
  h264: use a separate GetBitContext for slice data

Conflicts:
libavcodec/h264.c
libavcodec/h264_cavlc.c
libavcodec/h264_parser.c
libavcodec/h264_slice.c

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

Merge commit '2ea00e35e4e0b58f7a306dd55d8f72a21c32c946'

* commit '2ea00e35e4e0b58f7a306dd55d8f72a21c32c946':
  h264: do not abuse the context as a temporary storage in get_last_needed_nal()

Conflicts:
libavcodec/h264.c

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

Merge commit '404a416d4b1fcbf9db5569481d8181f296c01ea9'

* commit '404a416d4b1fcbf9db5569481d8181f296c01ea9':
  h264: remove some remnants of data partitioning

Conflicts:
libavcodec/h264.c
libavcodec/h264_slice.c

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

Merge commit '7bbc254d646ed9cf6deffc3fda75ae6729f95979'

* commit '7bbc254d646ed9cf6deffc3fda75ae6729f95979':
  h264: move resync_mb_{x,y} into the per-slice context

Conflicts:
libavcodec/h264_slice.c

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

Merge commit 'd4d9068cdf8f4b2b87ae87a2ef880d243f77b977'

* commit 'd4d9068cdf8f4b2b87ae87a2ef880d243f77b977':
  h264: move mb_{x,y} into the per-slice context

Conflicts:
libavcodec/h264.c
libavcodec/h264_cavlc.c
libavcodec/h264_mb.c
libavcodec/h264_slice.c
libavcodec/svq3.c

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

Merge commit '0edbe6faa7ef80daf0e84353cbe733389bf1a522'

* commit '0edbe6faa7ef80daf0e84353cbe733389bf1a522':
  h264: move mb_xy into the per-slice context

Conflicts:
libavcodec/h264.c
libavcodec/h264_cabac.c
libavcodec/svq3.c

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

Merge commit '07c5ca551b7327d3c4e33738cc0cd2d5ac2779fa'

* commit '07c5ca551b7327d3c4e33738cc0cd2d5ac2779fa':
  h264: move is_complex into the per-slice context

Conflicts:
libavcodec/h264_slice.c
libavcodec/svq3.c

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

Merge commit '47a0d393504d6726c4a235951153bee0abb3f7d6'

* commit '47a0d393504d6726c4a235951153bee0abb3f7d6':
  h264: move mb_skip_run into the per-slice context

Conflicts:
libavcodec/h264_cavlc.c

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

Merge commit '9951907f6fc37a8d41566dbee09f7c15ff587de6'

* commit '9951907f6fc37a8d41566dbee09f7c15ff587de6':
  h264: move redundant_pic_count into the per-slice context

Conflicts:
libavcodec/h264.c

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

Merge commit 'a9b201cacf85d710b102010cb4baef97f00ea39b'

* commit 'a9b201cacf85d710b102010cb4baef97f00ea39b':
  h264: move cabac_init_idc into the per-slice context

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

Merge commit 'e6c90ce94f1b07f50cea2babf7471af455cca0ff'

* commit 'e6c90ce94f1b07f50cea2babf7471af455cca0ff':
  h264: move loopfilter parameters into the per-slice context

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

Merge commit 'bd3e460b73dd54a68dc253e010c239cefc8d8d55'

* commit 'bd3e460b73dd54a68dc253e010c239cefc8d8d55':
  h264: move direct_cache into the per-slice context

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

Merge commit '6479c79f5517e2881bc881e737b2dbce69553878'

* commit '6479c79f5517e2881bc881e737b2dbce69553878':
  h264: move mvd_cache into the per-slice context

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

Merge commit 'a67f8ae9a2c8529bf6a635e8ca4e3483592708b1'

* commit 'a67f8ae9a2c8529bf6a635e8ca4e3483592708b1':
  h264: move mvd_table into the per-slice context

Conflicts:
libavcodec/h264.c

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

Merge commit '5c8280c3075dd54f26752c3a1185647578421703'

* commit '5c8280c3075dd54f26752c3a1185647578421703':
  h264: move last_qscale_diff into the per-slice context

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

Merge commit 'e7226984ac13aacb84eae77a372df8ff7685848f'

* commit 'e7226984ac13aacb84eae77a372df8ff7685848f':
  h264: move [{top,left}_]cbp into the per-slice context

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

Merge commit '30da98adbda6de1f55188f9058a3a5c715049633'

* commit '30da98adbda6de1f55188f9058a3a5c715049633':
  h264: move cabac[_state] into the per-slice context

Conflicts:
libavcodec/h264_cabac.c
libavcodec/h264_slice.c

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

avcodec/h264_slice: Merge 2 memcpy()

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

Merge commit 'bf03a878a76dea29b36f368759e9f66102b39a5f'

* commit 'bf03a878a76dea29b36f368759e9f66102b39a5f':
  h264: move mb[_{padding,luma_dc}] into the per-slice context

Conflicts:
libavcodec/h264.h
libavcodec/h264_cavlc.c
libavcodec/h264_mb.c
libavcodec/h264_slice.c

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

Merge commit 'b063582e0c4f775a8ba377488bd085595e0e7fae'

* commit 'b063582e0c4f775a8ba377488bd085595e0e7fae':
  h264: move intra_pcm_ptr into the per-slice context

Conflicts:
libavcodec/h264.h

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

Merge commit '95eb35f30513e335990ad0d5dca6ddc318477291'

* commit '95eb35f30513e335990ad0d5dca6ddc318477291':
  h264: move the ref lists variables into the per-slice context

Conflicts:
libavcodec/h264.c
libavcodec/h264.h
libavcodec/h264_cabac.c
libavcodec/h264_cavlc.c
libavcodec/h264_direct.c
libavcodec/h264_mb.c
libavcodec/h264_picture.c
libavcodec/h264_refs.c
libavcodec/h264_slice.c

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

Merge commit '7747726667c86877feed30c9e18460cb8e63f551'

* commit '7747726667c86877feed30c9e18460cb8e63f551':
  h264: move map_col_to_list0[_field] into the per-slice context

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

Merge commit 'ee0d774dfa94655e44707ff3e02f4a4d282c1963'

* commit 'ee0d774dfa94655e44707ff3e02f4a4d282c1963':
  h264: move dist_scale_factor[_field] into the per-slice context

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

Merge commit 'be69f0a800903b7573b18d9287d18b2f368b8b11'

* commit 'be69f0a800903b7573b18d9287d18b2f368b8b11':
  h264: move col_{parity,fieldoff} into the per-slice context

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

Merge commit '066aafced4dc6c7c9e7b37082635472249f1e93e'

* commit '066aafced4dc6c7c9e7b37082635472249f1e93e':
  h264: move direct_spatial_mv_pred into the per-slice context

Conflicts:
libavcodec/h264_mvpred.h

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

Merge commit 'ed451a08a46b2b07fd2dba3e55ffddd18ae6e3d6'

* commit 'ed451a08a46b2b07fd2dba3e55ffddd18ae6e3d6':
  h264: move sub_mb_type into the per-slice context

Conflicts:
libavcodec/h264_cabac.c

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

Merge commit '56febc993b928ccc039a32158ca60b234c311875'

* commit '56febc993b928ccc039a32158ca60b234c311875':
  h264: move the slice type variables into the per-slice context

Conflicts:
libavcodec/h264.c
libavcodec/h264_cabac.c
libavcodec/h264_cavlc.c
libavcodec/h264_slice.c

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

Merge commit '5f390eef8ee2b8adab00c5d2923a52aa261eb999'

* commit '5f390eef8ee2b8adab00c5d2923a52aa261eb999':
  h264: move mb_[uv]linesize into the per-slice context

Conflicts:
libavcodec/h264.h
libavcodec/h264_mb.c

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

Merge commit '99a35d1ccbb6b6cd260ce5c8369a897a79fe6a3a'

* commit '99a35d1ccbb6b6cd260ce5c8369a897a79fe6a3a':
  h264: move neighbor_transform_size into the per-slice context

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

Merge commit 'e6287f077c3e8e4aca11e61dd4bade1351439e6b'

* commit 'e6287f077c3e8e4aca11e61dd4bade1351439e6b':
  h264: move {mv,ref}_cache into the per-slice context

Conflicts:
libavcodec/h264_cabac.c
libavcodec/h264_mb.c

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

Merge commit 'f69574cf7aca4fe4d57a2155e925f37fc863474d'

* commit 'f69574cf7aca4fe4d57a2155e925f37fc863474d':
  h264: move non_zero_count_cache into the per-slice context

Conflicts:
libavcodec/h264.c
libavcodec/h264_cabac.c
libavcodec/h264_cavlc.c

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

Merge commit '64c81b2cd0dcf1fe66c381a5d2c707dddcf35a7e'

* commit '64c81b2cd0dcf1fe66c381a5d2c707dddcf35a7e':
  h264: move *_samples_available into the per-slice context

Conflicts:
libavcodec/h264.c
libavcodec/h264_mb.c

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

avcodec/h264_cabac: Fix intra4x4_pred_mode_cache argument to av_dlog()

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

Merge commit '7d8154edd594981e7891d57de91f2260f8a62939'

* commit '7d8154edd594981e7891d57de91f2260f8a62939':
  h264: move intra4x4_pred_mode[_cache] into the per-slice context

Conflicts:
libavcodec/h264.c

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

Merge commit '8b00f4df20f4a8ab0656fdaf7d00233a6515a052'

* commit '8b00f4df20f4a8ab0656fdaf7d00233a6515a052':
  h264: move some neighbour information into the per-slice context

Conflicts:
libavcodec/h264_cabac.c
libavcodec/h264_cavlc.c

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

Merge commit '4bd5ac200d15b4f458a50f66006549825f9fc865'

* commit '4bd5ac200d15b4f458a50f66006549825f9fc865':
  h264: move {chroma,intra16x16}_pred_mode into the per-slice context

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

Merge commit '5355ed6b20e941430c4f8fb82644e87a65366d61'

* commit '5355ed6b20e941430c4f8fb82644e87a65366d61':
  h264: move {prev,next}_mb_skipped into the per-slice context

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

Merge commit '06789ad3b71296a9e2fbd0278632d97a5d9af8d7'

* commit '06789ad3b71296a9e2fbd0278632d97a5d9af8d7':
  h264: move qp_thresh into the per-slice context

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

Merge commit 'd231e84b06a9964c840cff4e228509f706165fb6'

* commit 'd231e84b06a9964c840cff4e228509f706165fb6':
  h264: move the quantizers into the per-slice context

Conflicts:
libavcodec/dxva2_h264.c
libavcodec/h264_cavlc.c
libavcodec/h264_loopfilter.c

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

Merge commit 'd40ae0e595fe90b5583b9269f8bb000402bde5a6'

* commit 'd40ae0e595fe90b5583b9269f8bb000402bde5a6':
  h264: do not copy qscale when updating per-thread contexts

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

Merge commit '92c6c2a605f9b077b8fbc25b7ed6625541232b87'

* commit '92c6c2a605f9b077b8fbc25b7ed6625541232b87':
  h264: split weighted pred-related vars into per-slice context

Conflicts:
libavcodec/h264.c
libavcodec/h264.h
libavcodec/h264_mb.c
libavcodec/svq3.c

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

avcodec/hevc_ps: Check cropping parameters more correctly

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

Merge commit 'd8a45d2d49f54fde042b195f9d5859251252493d'

* commit 'd8a45d2d49f54fde042b195f9d5859251252493d':
  h264_ps: properly check cropping parameters against overflow

Conflicts:
libavcodec/h264_ps.c

See: c3bd306e78f9e3ca2f136f5b30cbe49fa0884f82
Merged-by: Michael Niedermayer <michaelni@gmx.at>

h264: move [uv]linesize to the per-slice context

While it is a per-frame variable, it is only really used in the
low-level decoding code, so it is more efficient to store it in the
slice context.

h264_cabac: remove now unnecessary H264Context function parameters

h264: use a smaller struct for the ref lists

There is no need to store a whole H264Picture, with a full AVFrame
embedded in it. This should allow getting rid of the embedded AVFrame
later.

h264_mb: remove an unused function parameter

h264: drop some mpegvideo remnants from draw_horiz_band()

This code makes no sense for h.264.

h264: drop the now unused per-slice H264Contexts

h264: use the main H264Context as the parent for all slice contexts

There is now no need to have per-slice copies of the H264Context.

h264_slice: constify all the uses of H264Context during slice decoding

All the variables modified by this code are either per-MB arrays or have
been moved to the per-slice context