x86/me_cmp: port mmxext vsad functions to yasm

Also add mmxext versions of vsad8 and vsad_intra8, and sse2 versions of
vsad16 and vsad_intra16.
Since vsad8 and vsad16 are not bitexact, they are accordingly marked as
approximate.

Reviewed-by: Michael Niedermayer <michaelni@gmx.at>
Signed-off-by: James Almer <jamrial@gmail.com>
avfilter/idet: typo fix: PROGRSSIVE -> PROGRESSIVE

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
dca: Remove some commented-out cruft
avformat/mp3dec: fix gapless audio support

The code already had skipping of initial padding, but discarding
trailing frame padding was missing.

This is somewhat questionable, because it will make the decoder discard
any data after the declared file size in the LAME header. But note that
skipping full frames at the end of the stream is required. Encoders
actually create such files.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
alacenc: fix incorrect buffer use

The issue lies in actually dead code ("for now it's not used").

Noticed-by: Justin Ruggles
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
alacenc: remove unneeded masking

The extra bits have already been masked, so this was not doing anything.

Noticed-by: Justin Ruggles
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
avcodec/alacenc: Remove unused variable

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Merge commit '103391ca90b2f7c56ae756d76c76f7c3dfa28dd4'

* commit '103391ca90b2f7c56ae756d76c76f7c3dfa28dd4':
  dca: Remove some commented-out cruft

Merged-by: Michael Niedermayer <michaelni@gmx.at>
swscale: Allow chroma samples to be above and to the left of luma samples

Found-by: Kierank
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
avfilter/vf_scale: Allow chroma samples to be above and to the left of luma samples

Found-by: Kierank
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
rtpenc: HEVC/H.265 support

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
mlpdec: support major sync headers with optional extension blocks

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
mlpdec: support TrueHD streams with an Atmos substream

The fourth substream is being discarded, since its not raw audio data,
but an encoded Atmos stream which needs a specialized decoder.

Fixes decoding of the true hd stream from Transformers\ -\ Age\ of\ Extinction\ 2014\ 1080P-003.mkv

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
avformat/mp3dec: avoid early EOF with concatenated gapless mp3s

Consider a file created with something like:

    cat file1.mp3 file2.mp3 > result.mp3

Then if file2.mp3 has gapless information, result.mp3 would stop playing
something in the middle. This happens because the gapless info directs
the decoder to discard all samples after a certain position. To make
matters worse, the gapless info of file2.mp3 will be used when playing
the file1.mp3 part, because the gapless info is located at the end of
the file.

While handling concatenated gapless files correctly would be insane and
a lot of effort (especially without scanning the whole file on opening),
it's easy to prevent at least early EOF. Playback will happen to work,
even if it's slightly broken.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
rtpdec_hevc: do not print an error message if the received packet has a valid header but lacks additional bytes as payload

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
avcodec/ass: add ff_ass_add_rect_bprint() helper
avcodec/jacosubdec: add some memory checks
avcodec/microdvddec: add some memory checks
avcodec/movtextdec: add some memory checks
avcodec/mpl2dec: add some memory checks