Consistent with the pad and scale filters.

Previously, "dar" and "a" were documented like "input display aspect
ratio", but their actual value was "in_w/in_h".

In order to avoid to break scripts which rely on the "a" variable, the
patch keeps the same semantics but fixes the corresponding docs, and
fixes the semantics of the recently added "dar" variable, which
now correctly expresses the input Display Aspect Ratio value as
"(inw_w/in_h)*sar".

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

* qatar/master:
  mxfdec: Include FF_INPUT_BUFFER_PADDING_SIZE when allocating extradata.
  H.264: tweak some other x86 asm for Atom
  probe: Fix insane flow control.
  mpegts: remove invalid error check
  s302m: use nondeprecated audio sample format API
  lavc: use designated initialisers for all codecs.
  x86: cabac: add operand size suffixes missing from 6c325765

Conflicts:
	libavcodec/ac3enc_float.c
	libavcodec/flacenc.c
	libavcodec/frwu.c
	libavcodec/pictordec.c
	libavcodec/qtrleenc.c
	libavcodec/v210enc.c
	libavcodec/wmv2dec.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

This prevents out of bounds reads when extradata is being decoded.

avfilter_draw_slice() is already called in the end_frame() callback,
this avoids multiple calls. This is done by adding a null draw_slice()
callback.

In particular fix crash occurring with -vf transpose=3,hflip, fix trac
issue #371.

A loop control variable was shadowed inside the loop and never updated.

mpegts_read_header is used by both mpegts and mpegtsraw, so this
erro check is no longer valid.
Signed-off-by: Mike Williams <mike@mikebwilliams.com>
Signed-off-by: Anton Khirnov <anton@khirnov.net>

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

It's more readable and less prone to breakage.

This fixes build with clang.
Signed-off-by: Mans Rullgard <mans@mansr.com>

* qatar/master:
  h263dec: Propagate AV_LOG_ERRORs from slice decoding through frame decoding with sufficient error recognition
  x86: cabac: don't load/store context values in asm
  H.264: optimize CABAC x86 asm for Atom
  vp3/theora: flush after seek.
  doc/fftools-common-opts: wording fixes missing from the previous commit.
  doc: document using AVOptions in fftools.
  cmdutils: add codec_opts parameter to setup_find_stream_info_opts()
  cmdutils: clarify documentation for filter_codec_opts()
  cmdutils: clarify documentation for setup_find_stream_info_opts()
  lavf: add forgotten attribute_deprecated to av_find_stream_info()
Merged-by: Michael Niedermayer <michaelni@gmx.at>

h263dec: Propagate AV_LOG_ERRORs from slice decoding through frame decoding with sufficient error recognition
Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>

Inspection of compiled code shows gcc handles these fine on its own.
Benchmarking also shows no measurable speed difference.

Removing the remaining cases in get_cabac_bypass_sign_x86() does
cause more substantial changes to the compiled code with uncertain
impact.
Signed-off-by: Mans Rullgard <mans@mansr.com>

Correct computation of implicit weight tables when referencing pictures
that are marked for long reference.

The current checks on MMCO parameters prohibits a "max long term frame index
plus 1" of 16 (frame idx of 15) for the "set max long term frame index" MMCO.
Fix this off-by-one error to allow the full range of legal values.

Avoid brittle and obfuscating reference to a global.
Signed-off-by: Anton Khirnov <anton@khirnov.net>

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

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

Whitespace of the patch cleaned up by Aurel
Some of the issues have been reported by Steve Manzuik / Microsoft Vulnerability Research (MSVR)
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

"SAR" (Sample Aspect Ratio) is globally preferred over "PAR" (Pixel
Aspect Ratio), although the two terms share the same semantics.

For example the corresponding AVStream field is called
sample_aspect_ratio, and libavfilter has a filter named setsar.

Therefore prefer the term "SAR" over "PAR" in the
libavformat/utils.c:dump_stream_format() and avcodec_string() output
for avoiding confusion.

This is required for extending lavfi tests to audio filtering.

Previously the string for AV_CH_LAYOUT_5POINT{0,1}_BACK was the same
of the string for AV_CH_LAYOUT_5POINT{0,1}.

This is required for discerning the two channel layouts, given a
channel layout string.

* qatar/master:
  ppc: remove redundant setting of Altivec IDCT
  mpegvideo: initialise DSPContext in ff_dct_common_init()
  cosmetics: reindent
  eac3enc: support writing of basic mixing and info metadata
  dnxhdenc: fix declarations in for loops
  dsputil: remove stale bink prototypes and comments
  dsputil: move a bink-only function to binkdsp
  dsputil: remove some unused functions
  bink: make IDCT take 32-bit input
Merged-by: Michael Niedermayer <michaelni@gmx.at>

Made redundant by "-profile baseline".
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

This is already set by dsputil_init_ppc() and is best done in only
one place.
Signed-off-by: Mans Rullgard <mans@mansr.com>

The functions and tables initialised in this function rely on an
initialised DSPContext.  Make sure they always have one.
Signed-off-by: Mans Rullgard <mans@mansr.com>