h264: Add add_pixels4/8() to h264dsp, and remove add_pixels4 from dsputil

These functions are mostly H264-specific (the only other user I can
spot is bink), and this allows us to special-case some functionality
for H264. Also remove the 16-bit-coeff with >8bpp versions (unused)
and merge the duplicate 32-bit-coeff for >8bpp (identical).

Signed-off-by: Martin Storsjö <martin@martin.st>
get_bits: Return pointer to buffer that is the result of the alignment

This allows more transparent mixing of get_bits and whole-byte access
without having to touch get_bits internals.

Signed-off-by: Martin Storsjö <martin@martin.st>
h264: Don't store intra pcm samples in h->mb

Instead, keep them in the bitstream buffer until we read them verbatim,
this saves a memcpy() and a subsequent clearing of the target buffer.
decode_cabac+decode_mb for a sample file (CAPM3_Sony_D.jsv) goes from
6121.4 to 6095.5 cycles, i.e. 26 cycles faster.

Signed-off-by: Martin Storsjö <martin@martin.st>
h264/svq3: Stop using draw_edges

Instead, only extend edges on-demand when the motion vector actually
crosses the visible decoded area using ff_emulated_edge_mc(). This
changes decoding time for cathedral from 8.722sec to 8.706sec, i.e.
0.2% faster overall. More generally (VP8 uses this also), low-motion
content gets significant speed improvements, whereas high-motion content
tends to decode in approximately the same time.

Signed-off-by: Martin Storsjö <martin@martin.st>
h264: Get rid of unnecessary casts

This gets rid of a number of warnings about casts discarding
qualifiers from the pointer target, present since 7ebfb466a.

Signed-off-by: Martin Storsjö <martin@martin.st>
build: Ensure that output directories for header objects are created
intreadwrite: tomi: Add missing attributes.h #include for av_always_inline
Merge commit '2ed008204d5467be03a0a3af1e293b2f7038d0a0'

* commit '2ed008204d5467be03a0a3af1e293b2f7038d0a0':
  h264: Add add_pixels4/8() to h264dsp, and remove add_pixels4 from dsputil

Conflicts:
	libavcodec/dsputil.c
	libavcodec/h264.c
	libavcodec/h264_mb_template.c
	libavcodec/h264addpx_template.c
	libavcodec/h264dsp.c
	libavcodec/h264dsp.h

Merged-by: Michael Niedermayer <michaelni@gmx.at>
lavfi/hue: simplify parsing by making use of option shorthands
lavfi/hue: reindent after previous commit
doc: filters: Correct BNF FILTER description

Signed-off-by: Diego Biurrun <diego@biurrun.de>
Merge commit '7ebfb466aec2c4628fcd42a72b29034efcaba4bc'

* commit '7ebfb466aec2c4628fcd42a72b29034efcaba4bc':
  h264: Don't store intra pcm samples in h->mb
  get_bits: Return pointer to buffer that is the result of the alignment

Conflicts:
	libavcodec/h264_mb_template.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
Merge commit 'fae6fd5b873911cfcd7f7b3d72de6598af5e003a'

* commit 'fae6fd5b873911cfcd7f7b3d72de6598af5e003a':
  h264/svq3: Stop using draw_edges

Merged-by: Michael Niedermayer <michaelni@gmx.at>
Merge commit '8a11ce43d08352f7a290355ebb5b29c495ad9609'

* commit '8a11ce43d08352f7a290355ebb5b29c495ad9609':
  build: Ensure that output directories for header objects are created
  h264: Get rid of unnecessary casts

Conflicts:
	common.mak

Merged-by: Michael Niedermayer <michaelni@gmx.at>
lavf/matroskaenc: avoid assert failure in case of cuepoints with duplicated PTS

Avoid to write more than one cuepoint per track and PTS in
mkv_write_cues(). This avoids a later assertion failure on "(bytes >=
needed_bytes)" in put_ebml_num() called from end_ebml_master(), in case
there are several cuepoints per track with the same PTS.

This may happen with files containing packets with duplicated PTS in the
same track.
Merge remote-tracking branch 'qatar/master'

* qatar/master:
  intreadwrite: tomi: Add missing attributes.h #include for av_always_inline

Merged-by: Michael Niedermayer <michaelni@gmx.at>
avfilter: fix segfault with setsar/dar

Reported-by: durandal_1707
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
arm: vp8: Add missing #includes for header to compile standalone
dxva2: Add missing #define to make header compile standalone
mov: fix self referencing timecode tracks

Fixes read after free.

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