Fixes compilation of ljpeg encoder if mjpeg and amv encoders are disabled

When coding lossless jpeg the priv context will be pointing to LJpegEncContext
rather than MpegEncContext, which the function expects.
Signed-off-by: Rostislav Pehlivanov <atomnuker@gmail.com>

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

This limits the bugs, speedloss and extra memory allocation to the case when
optimal tables are needed.
Fixes regressions with slice multi-threading
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

If this is wanted iam not against it but it must be designed to work with all cases
like slice threads, and a single growing buffer does not work very well with slices.
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Signed-off-by: Rostislav Pehlivanov <atomnuker@gmail.com>

> seems to break
> make fate-vsynth1-mjpeg-444

Fixed.

Fixes Ticket5244
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

This options is only used by huffyuv, ffvhuv, jpegls, mjpeg,
mpegvideoenc, png, utvideo.
It is a very codec-specific options, so deprecate the global variant.
Set proper limits to the maximum allowed values, and update utvideoenc
tests to use the new option name.
Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>

RFC 2435 suggests that mjpeg over rtp uses both two tables.

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Convert doxygen to multiline and express bitfields more simply.
Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>

Fixes assertion failure
Fixes Ticket4396
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

The header had a wrong version description.

Bug-Id: 808
Signed-off-by: Shiina Hideaki <shiina@yndrd.com>
Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>

These where removed by  libav while spliting the file in adcb8392

See: de6d9b64
See: 723106b2Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

This obviates a dependency of the LJPEG encoder on mpegvideo.

This should make it simpler for users to test if such videos work

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

It is obviously nonsense since it produces wrong results
or even crashes (crashes should be encode-only though).
Fixes trac issue #1092.
Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

I do not know on which side to place the padding to encode with 16x16 MBs
If someone knows or has a known to be correct sample, please contact me
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Fixes part of Ticket3466
Found-by: Andrey_Karpov / PVS-Studio
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

This avoids the need for double error checking
Fixes CID1163843
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

drop hardcoded TWOMATRIX code
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

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

This reduces the amount of duplicated code
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>

This will be used by ljpeg
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

This reduces the number of operations done per non zero coefficient
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

The alpha plane is not encoded.

This will allow deMpegEncContextizing the LJPEG encoder.

This will allow deMpegEncContextizing the LJPEG encoder.