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Further performance improvements and security fixes by
Vittorio Giovara, Luca Barbato and Diego Biurrun.
Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
Signed-off-by: Diego Biurrun <diego@biurrun.de>
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Signed-off-by: Diego Biurrun <diego@biurrun.de>
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It does not help as an abstraction and adds dsputil dependencies.
Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
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On 64bit platforms with 32bit int, this means we won't have to sign-
extend the integer anymore.
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Signed-off-by: Martin Storsjö <martin@martin.st>
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Signed-off-by: Mans Rullgard <mans@mansr.com>
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This adds NEON optimised versions of all functions in VP8DSPContext.
Based on initial work by Rob Clark.
Signed-off-by: Mans Rullgard <mans@mansr.com>
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A lot of the time the DC block is empty: don't do the WHT in this case.
A lot of the rest of the time, there's only one coefficient: make a special
DC-only transform for that case.
When the block is empty, don't incorrectly mark luma DCT blocks as having DC
coefficients.
Originally committed as revision 24670 to svn://svn.ffmpeg.org/ffmpeg/trunk
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Add MMX idct_dc_add4uv function for this case.
~40% faster chroma idct.
Originally committed as revision 24455 to svn://svn.ffmpeg.org/ffmpeg/trunk
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Take shortcuts based on statistically common situations.
Add 4-at-a-time idct_dc function (mmx and sse2) since rows of 4 DC-only DCT
blocks are common.
TODO: tie this more directly into the MB mode, since the DC-level transform is
only used for non-splitmv blocks?
Originally committed as revision 24452 to svn://svn.ffmpeg.org/ffmpeg/trunk
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so that it does both U and V planes at the same time. This will have speed
advantages when using SSE2 (or higher) optimizations, since we can do both
the U and V rows together in a single xmm register.
This also renames filter16 to filter16y and filter8 to filter8uv so that it's
more obvious what each function is used for.
Originally committed as revision 24337 to svn://svn.ffmpeg.org/ffmpeg/trunk
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Originally committed as revision 23884 to svn://svn.ffmpeg.org/ffmpeg/trunk
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- MMXEXT, SSE2 and SSSE3 MC functions
- MMX and SSE4 IDCT dc_add functions
Patch by Jason Garrett-Glaser <darkshikari gmail com> and myself.
Originally committed as revision 23815 to svn://svn.ffmpeg.org/ffmpeg/trunk
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Originally committed as revision 23813 to svn://svn.ffmpeg.org/ffmpeg/trunk
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This isn't useful for the C functions, but will allow re-using H and V functions
for HV functions without adding separate H and V wrappers.
Originally committed as revision 23782 to svn://svn.ffmpeg.org/ffmpeg/trunk
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Patch by David Conrad <lessen42 gmail com> and myself.
Originally committed as revision 23719 to svn://svn.ffmpeg.org/ffmpeg/trunk
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