FFmpeg

114848 Commits

37 Branches

400 Tags

492 MiB

Commit Graph

Author	SHA1	Message	Date
Peter Ross	d8ebfd1bdf	avcodec/vp6: select idct based (loosely) on number of coefficients decoded The VP3/4/5/6 reference decoders all use three IDCT versions: one for the DC-only case, another for blocks with more than 10 coefficients, and an optimised one for blocks with up to 10 AC coefficents. VP6 relies on the sparse 10 coefficient version, and without it, IDCT drift occurs. Fixes: https://trac.ffmpeg.org/ticket/1282 Signed-off-by: Peter Ross <pross@xvid.org>	6 years ago
James Almer	33aa8a6221	avformat/framecrc: enable new output Reviewed-by: Michael Niedermayer <michael@niedermayer.cc> Signed-off-by: James Almer <jamrial@gmail.com>	9 years ago
Reimar Döffinger	547c2f002a	Make decoding alpha optional for some codecs. For codecs where decoding of a whole plane can simply be skipped, we should offer applications to not decode alpha for better performance (ca. 30% less CPU usage and 40% reduced memory bandwidth). It also means applications do not need to implement support (even if it is rather simple) for YUVA formats in order to be able to play these files. Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>	12 years ago

Author

SHA1

Message

Date

Peter Ross

d8ebfd1bdf

avcodec/vp6: select idct based (loosely) on number of coefficients decoded

The VP3/4/5/6 reference decoders all use three IDCT versions: one for the
DC-only case, another for blocks with more than 10 coefficients, and an
optimised one for blocks with up to 10 AC coefficents. VP6 relies on the
sparse 10 coefficient version, and without it, IDCT drift occurs.

Fixes: https://trac.ffmpeg.org/ticket/1282

Signed-off-by: Peter Ross <pross@xvid.org>

James Almer

33aa8a6221

avformat/framecrc: enable new output

Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: James Almer <jamrial@gmail.com>

Reimar Döffinger

547c2f002a

Make decoding alpha optional for some codecs.

For codecs where decoding of a whole plane can simply
be skipped, we should offer applications to not decode
alpha for better performance (ca. 30% less CPU usage
and 40% reduced memory bandwidth).
It also means applications do not need to implement support
(even if it is rather simple) for YUVA formats in order to be
able to play these files.

Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>

3 Commits (16616a3d1be07d1b20268df1bd5727bb4ca33c92)