The original code left-shifts negative values, which is undefined
in the C99 specification (the one used during normal Libav compilation).
This change multiplies by (1 << shift), which is functionally equivalent,
but has defined behavior.
With this change, fate-idct8x8 compiled with --fsanitize=undefined works.
Bug-Id: 686
The original code left-shifts negative values, which is undefined
in the C99 specification (the one used during normal FFmpeg compilation).
This change multiplies by (1 << shift), which is functionally equivalent,
but has defined behavior.
With this change, fate-idct8x8 compiled with --fsanitize=undefined works.
Bug-Id: 686
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
The assembly generated by gcc is unchanged by this commit
int/unsigned is the natural memory access type for CPUs, using sized types
for temporary variables, counters and similar just increases code size and
can possibly cause a slowdown.
Passing an explicit filename to this command is only necessary if the
documentation in the @file block refers to a file different from the
one the block resides in.
Originally committed as revision 22921 to svn://svn.ffmpeg.org/ffmpeg/trunk
Patch by avcoder: our_beloved_project AT gmail DOT com
See thread [FFmpeg-devel] Patch: remove useless SHIFT_TEMPS definition
Date: Tue, 20 Oct 2009 14:29:05 +0800
Originally committed as revision 20331 to svn://svn.ffmpeg.org/ffmpeg/trunk
Otherwise doxygen complains about ambiguous filenames when files exist
under the same name in different subdirectories.
Originally committed as revision 16912 to svn://svn.ffmpeg.org/ffmpeg/trunk
* simple/accurate implementation of dct248
* DV encoding now supports 2-4-8 DCT
* DV encoding gets a bit faster (but still miles away
from what I think it could do)
* misc. DV codec cleanups
Originally committed as revision 2425 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diego Biurrun
Katerina Barone-Adesi
Mans Rullgard
avcoder
Michael Niedermayer
Roman Shaposhnik
Zdenek Kabelac