This was intended as an optimisation for skipped blocks in MPEG2
P-frames and never used elsewhere. Removing this "optimisation"
speeds up MPEG2 decoding by 1-2% (ARM Cortex-A9).
Signed-off-by: Mans Rullgard <mans@mansr.com>
This reverts commit da22ba7df4 since it
broke slice threading. Slice threading just duplicates MpegEncContext
so every value used during mpeg_decode_slice has to be in it.
A second patch will fix the illusion that Mpeg1Context is available
in mpeg_decode_slice.
The way this value is used, it should be an unsigned type.
While the numerical value has no meaning, unsigned wraparound
is relied upon.
Signed-off-by: Mans Rullgard <mans@mansr.com>
FF_COMMON_FRAME holds the contents of the AVFrame structure and is also copied
to struct Picture. Replace by an embedded AVFrame structure in struct Picture.
This moves the fields needed by asm near the top, before any
structs or other members which complicate the offset calculation.
Modifying other structs will no longer require updating the offsets,
and the asm code is slightly simpler due to the smaller offsets.
Signed-off-by: Mans Rullgard <mans@mansr.com>
Passing an explicit filename to this command is only necessary if the
documentation in the @file block refers to a file different from the
one the block resides in.
Originally committed as revision 22921 to svn://svn.ffmpeg.org/ffmpeg/trunk
Move prototypes to header files, add missing prototypes,
make some functions static.
Originally committed as revision 22310 to svn://svn.ffmpeg.org/ffmpeg/trunk
resolution. A sample file to show a difference is at issue833 (http://airfarce.com/video/000211fh.rm)
Originally committed as revision 20691 to svn://svn.ffmpeg.org/ffmpeg/trunk
The first member of struct ScanTable is a simple pointer, extra alignment
of which serves no purpose. The alignment specifier was added along with
some Altivec optimisations also adding a 16-byte-aligned array at the end
of struct ScanTable. Presumably the redundant, outer alignment was added
by mistake. The inner one is clearly sufficient.
Originally committed as revision 19724 to svn://svn.ffmpeg.org/ffmpeg/trunk
First, reverted one was r19239.
Patch by Haruhiko Yamagata, h D yamagata A nifty D com
Originally committed as revision 19258 to svn://svn.ffmpeg.org/ffmpeg/trunk
in mpegvideo.h to avoid including mpegvideo_common.h in mpeg12.c,
because it contains motion code.
Originally committed as revision 18968 to svn://svn.ffmpeg.org/ffmpeg/trunk