Signed-off-by: NLukasz Marek <lukasz.m.luki@gmail.com>
Signed-off-by: NMichael Niedermayer <michaelni@gmx.at>

Added libavutil/timer.h include to all files with {START,STOP}_TIMER.

This fixes builds with e.g. --disable-decoders --disable-encoders
--enable-encoder=mjpeg.
Signed-off-by: NMartin Storsjö <martin@martin.st>

We currently read a whole 16x16 block from the input at a few places
Signed-off-by: NMichael Niedermayer <michaelni@gmx.at>

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

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

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

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

Several decoders disable those anyway and they are not measurably faster
on x86. They might be somewhat faster on other platforms due to missing
emu edge SIMD, but the gain is not large enough (and those decoders
relevant enough) to justify the added complexity.

This introduces some code duplication. However, much of it should go
away once the decoders stop using MpegEncContext.

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

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

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

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

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

The encoder uses almost none of the mpegvideo infrastructure, only some
fields from MpegEncContext.

The FATE results change because now an all-zero quant matrix is written
into the file. Since it is not used for anything for ljpeg, this should
not be a problem.

This will allow deMpegEncContextizing the LJPEG encoder.

This will allow deMpegEncContextizing the LJPEG encoder.

Fixes ticket3143
Signed-off-by: NMichael Niedermayer <michaelni@gmx.at>

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

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

We should not arbitrarily decide the maximum B-frame number for all
encoders supported by Libav, each encoder should be able to set its own
limits.

This excludes many changes that worsen readability
Signed-off-by: NMichael Niedermayer <michaelni@gmx.at>

Fixes crash found by saste
Signed-off-by: NMichael Niedermayer <michaelni@gmx.at>

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: NMichael Niedermayer <michaelni@gmx.at>

Fixes Ticket2990
Signed-off-by: NMichael Niedermayer <michaelni@gmx.at>

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

Also improve error feedback while at it.