Signed-off-by: NRonald S. Bultje <rsbultje@gmail.com>

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: NMans Rullgard <mans@mansr.com>

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

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

Signed-off-by: NRonald S. Bultje <rsbultje@gmail.com>

Signed-off-by: NRonald S. Bultje <rsbultje@gmail.com>

Add AV_NUM_DATA_POINTERS to simplify the bump transition.
This will allow for supporting more planar audio channels without having to
allocate separate pointer arrays.

A new field, AVCodecContext.internal is used to hold a new struct
AVCodecInternal, which has private fields that are not codec-specific and are
used by general libavcodec functions.

Moved internal_buffer, internal_buffer_count, and is_copy.

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

It's MPEG-1/2 specific.

It's used in lavf.

It's used in lavf.

Replace our incomplete w32threads implementation with x264's pthreads
w32threads wrapper.
Relicensed to LGPL with kind permission by Pegasys Inc.
Signed-off-by: NJanne Grunau <janne-libav@jannau.net>

Using the old code, half of it was unused and the other half was too
small for e.g. >8bpp interlaced data, causing random buffer overruns.

It was wrong in colorspaces where horizontal and vertical chroma
subsampling are not the same, e.g. 422.

This fixes build failures with -DDEBUG in CPPFLAGS.

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

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

Mpegvideo would free frames as soon as they're not the next or prev
picture. This is fine for a single-threading model, but fails miserably
in a system where pictures can be referenced (as e.g. last/prev pic)
in other threads. Keeping track of ownership of pictures keeps image
references (e.g. motion vectors, or the reference of a motion vector)
alive as long as the picture data itself is alive.

This also happens to fix make THREADS=[3-16] fate-vsynth[12]-error.

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.

Instead, just decrease it to a valid value and use that.
Signed-off-by: NRonald S. Bultje <rsbultje@gmail.com>

filter_mb_fast assumed that qscale_table was padded like many of the other tables.

Note: this is 4:4:4 from the 2007 spec revision, not the previous (now deprecated) 4:4:4 mode in H.264.

Needs some ARM/PPC asm modifications.

Note: this is 4:4:4 from the 2007 spec revision, not the previous (now deprecated) 4:4:4 mode in H.264.

The MPEG encoding code assumes that n_threads == n_slices, and thus it
should use n_slices even if threading itself is disabled.

Signed-off-by: NRonald S. Bultje <rsbultje@gmail.com>

It was long ago superseded by msmpeg4_version.

This allows the values to be used without changing C code and is closer to how
the other DEBUG flags work.
Signed-off-by: NAnton Khirnov <anton@khirnov.net>

Problem description, preliminary review discussion at
http://thread.gmane.org/gmane.comp.video.ffmpeg.devel/127731

Signed-off-by: NDiego Biurrun <diego@biurrun.de>

It has been deprecated for about five years, skip_idct/skip_frame should
be used instead.

Signed-off-by: NMans Rullgard <mans@mansr.com>