This allows supporting files for which the image stride is smaller than
the max. block size + number of subpel mc taps, e.g. a 64x64 VP9 file
or a 16x16 VP8 file with -fflags +emu_edge.

This prevents emulated_edge_mc from not undoing mvy*stride-related
integer overflows.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

This is in line with the other functions
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

This fixes breakage in a few fate tests on certain setups
(that for some reason didn't break on OS X) after the previous
commit (8812a805). Currently, some video streams are initialized
in ff_MPV_common_init with width/height set at 0 and only changed
to a proper video size with ff_MPV_common_frame_size_change later.

The breakage was diagnosed by Anton Khirnov.
Signed-off-by: Martin Storsjö <martin@martin.st>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Files starting with B frames in presentation order generated the
"no keyframe" warning before this change.

Based on patch by: Robert Krüger <krueger@lesspain.de>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Fixes strides and issue with mplayer and mpeg2 field pictures
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

This reverts commit bf36dc50, reversing
changes made to b7fc2693.

Conflicts:

	libavcodec/h264.c

Keeping support for the old VDPAU API has been requested by our VDPAU maintainer
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Fixes ticket #2735.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

These are needed for lowres 3

This may fix Ticket2538
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Fixes Ticket2592
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

ff_mpeg_unref_picture clears the flag indicating that the frame needs to
be reallocated after a frame size change. Since we have now reference
counted buffers we can unref the buffers immediately.

Allows decoding with only three frame buffers with frame reference
counting. Fixes VAAPI based decoding in vlc which uses only three
frame buffers for the mpegvideo-based codecs.

MPV_decode_mb_internal needs 3 * 16 * linesize bytes of scratch buffer

For interlaced content, linesize is multiplied by two after the allocation
of the scratch buffer, and the dest_cr pointer ends past the buffer.

This patch makes ff_mpv_frame_size_alloc allocate a total of
(aligned line_size) * 2 * 16 * 3 bytes, which suffices even for the
interlaced case.

CC:libav-stable@libav.org
Signed-off-by: Jindrich Makovicka <makovick@gmail.com>
Signed-off-by: Anton Khirnov <anton@khirnov.net>

Fixes a few green artifacts at the top
Fixes rest of Ticket 2535
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Fixes green trash
Fixes part of Ticket2535
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

This also converts vc1, since that is mpegvideo-based.
Signed-off-by: Martin Storsjö <martin@martin.st>

This fixes out of array writes after resolution changes
No FFmpeg releases are known to be affected by this

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

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

This should not be needed anymore
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

This allows dropping the mpegvideo dependency from a number of
components.

This also fixes standalone building of the h264 parser, which
was broken in 64e43869.
Signed-off-by: Martin Storsjö <martin@martin.st>

This ensures the hwaccel privdata does not leak when a frame buffer could
not be allocated (and toggle the assert when the frame is re-used).
Having no frame buffer available is quite common when using the DXVA2
hwaccel in situations where the DXVA2 renderer is being re-allocated, for
example when moving between displays.
Signed-off-by: Anton Khirnov <anton@khirnov.net>

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

Found-by: wm4
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

This also converts vc1, since that is mpegvideo-based.

was broken by the buffer ref stuff
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>