Not every user of idctdsp.h wants to initialize an IDCTDSPContext;
e.g. the proresdsp only uses ff_init_scantable_permutation()
and the IDCT permutation enum; similarly for cavsdsp and wmv2dsp.
Using a forward declaration here avoids an avcodec.h dependency
in the relevant files.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This function is bitrotten: It uses different parameters
than the corresponding ASM functions which replaced it.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
ea41e6d637 forgot
the int->ptrdiff_t switch for the stride. Libav didn't
do it because Libav had already dropped support for Alpha
at that point.
Only compilation has been tested for this commit.
(It might be that the ASM-versions of me_cmp_func functions
need to be updated as well.)
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
It is only (mis-)used to set the dsp fucntions clear_block(s). But
these functions always work on 16bits-wide elements, which make
the parameter useless and actually harmful, as it causes all content
on more than 8-bits to not use accelerated functions.
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Disable moved functions to prevent build/test failure,
patch to update and re-enable them is welcome
volunteer to maintain the alpha code is welcome too
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
The blockdsp split did not cover Alpha optimizations
Signed-off-by: James Almer <jamrial@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
The new lowres support is limited to decoders where lowres decoding
is possible in high quality.
I was not able to measure any speed difference, but if one is found
the 2-3 lines that might affect speed can be made compile time conditional
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This patch lets e.g. dsputil_init chose dsp functions with respect to
the bit depth to decode. The naming scheme of bit depth dependent
functions is <base name>_<bit depth>[_<prefix>] (i.e. the old
clear_blocks_c is now named clear_blocks_8_c).
Note: Some of the functions for high bit depth is not dependent on the
bit depth, but only on the pixel size. This leaves some room for
optimizing binary size.
Preparatory patch for high bit depth h264 decoding support.
Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
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.
This patch lets e.g. dsputil_init chose dsp functions with respect to
the bit depth to decode. The naming scheme of bit depth dependent
functions is <base name>_<bit depth>[_<prefix>] (i.e. the old
clear_blocks_c is now named clear_blocks_8_c).
Note: Some of the functions for high bit depth is not dependent on the
bit depth, but only on the pixel size. This leaves some room for
optimizing binary size.
Preparatory patch for high bit depth h264 decoding support.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
gprof is far too intrusive to be of use as a profile for ffmpeg,
and it fails to build in many configurations. Oprofile is a
better tool for profiling on Linux.
Originally committed as revision 23807 to svn://svn.ffmpeg.org/ffmpeg/trunk
Andreas Rheinhardt
Christophe Gisquet
James Almer
Michael Niedermayer
Diego Biurrun
Ronald S. Bultje
Derek Buitenhuis
Mans Rullgard
Martin Storsjö
Oskar Arvidsson
Janne Grunau