Signed-off-by: Martin Storsjö <martin@martin.st>

Signed-off-by: Martin Storsjö <martin@martin.st>

Signed-off-by: Martin Storsjö <martin@martin.st>

This file defines a single, huge function, MPV_motion(), which
although being declared inline is not actually inlined by the
compiler (for good reason).  There is thus no sense in defining
this function in a header file, resulting in multiple copies of
it in the final library.

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

Signed-off-by: Martin Storsjö <martin@martin.st>

This feature is complex, of questionable utility, and slows down
normal decoding.

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

Interlaced images can have 32 references (16 per field), so limiting the
array size to 16 leads to invalid writes.

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org

Signed-off-by: Martin Storsjö <martin@martin.st>

Deprecate corresponding AVCodecContext field.

Deprecate corresponding AVCodecContext fields.

Deprecate CODEC_FLAG_CBP_RD.

Deprecate CODEC_FLAG_QP_RD.

Deprecate CODEC_FLAG2_STRICT_GOP.

Deprecate CODEC_FLAG2_SKIP_RD in favor of the corresponding mpv_flags
flag.

Signed-off-by: Martin Storsjö <martin@martin.st>

Signed-off-by: Martin Storsjö <martin@martin.st>

Signed-off-by: Martin Storsjö <martin@martin.st>

Signed-off-by: Martin Storsjö <martin@martin.st>

It is obscure, most likely unused and not bit-exact compared to
libavcodec due to a different IDCT transform algorithm.

Adds a new member to MpegEncContext to hold the number of used slice
contexts. Fixes segfaults with '-threads 17 -thread_type slice' and
fate-vsynth{1,2}-mpeg{2,4}thread{,_ilace} with --disable-pthreads.

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>

Simplify a little error resilience calls

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

Add the namespace to {AC_,DC_,MV_}{END,ERROR} macros

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

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

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.

It's MPEG-1/2 specific.

It's MPEG-1 specific.

It's used in lavf.

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>

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.

Deprecate CODEC_FLAG_SVCD_SCAN_OFFSET

Deprecate CODEC_FLAG2_DROP_FRAME_TIMECODE

Deprecate CODEC_FLAG2_INTRA_VLC.

This allows using the same arm assembler offsets for both EABI
and the mach-o ABI.

Signed-off-by: Martin Storsjö <martin@martin.st>

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.

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

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

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

It was long ago superseded by msmpeg4_version.

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

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