Commit Graph

34 Commits

Author SHA1 Message Date
Peter Ross
ac4b32df71 On2 VP7 decoder
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>
2014-04-04 04:00:11 +02:00
Vittorio Giovara
53c20f17c7 vp8: K&R formatting cosmetics
Signed-off-by: Diego Biurrun <diego@biurrun.de>
2014-03-29 16:11:09 +01:00
Diego Biurrun
f9279ee749 dsputil: Move ff_zigzag_direct and ff_crop_tab declarations to mathops.h 2014-03-22 06:17:29 -07:00
Diego Biurrun
05563ccacc dsputil: cosmetics: Lose camelCase on ff_cropTbl and ff_squareTbl names
Also switch from "tbl" to "tab" name suffixes.
2014-03-13 08:12:44 -07:00
Ronald S. Bultje
5351964a2b vp8: fix bilinear C code to work if src_stride != dst_stride.
Signed-off-by: Anton Khirnov <anton@khirnov.net>
Signed-off-by: Janne Grunau <janne-libav@jannau.net>
2014-02-06 22:45:29 +01:00
Diego Biurrun
67e6a9f558 cosmetics: Place arch initialization calls in alphabetical order 2013-08-29 11:24:14 +02:00
Diego Biurrun
38282149b6 ppc: More consistent arch initialization 2013-04-30 12:19:45 +02:00
Martin Storsjö
9e0f14f16c lavc: Make pointers to ff_cropTbl const
There's no point in these pointers not being const.

Signed-off-by: Martin Storsjö <martin@martin.st>
2013-04-08 12:38:33 +03:00
Diego Biurrun
88bd7fdc82 Drop DCTELEM typedef
It does not help as an abstraction and adds dsputil dependencies.

Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
2013-01-22 18:32:56 -08:00
Janne Grunau
f101eab1be x86: call most of the x86 dsp init functions under if (ARCH_X86)
Rename the called dsp init functions to *_init_x86.
2012-10-08 11:54:05 +02:00
Martin Storsjö
1d9c2dc89a Don't include common.h from avutil.h
Signed-off-by: Martin Storsjö <martin@martin.st>
2012-08-15 22:32:06 +03:00
Ronald S. Bultje
c23acbaed4 Don't use ff_cropTbl[] for IDCT.
Results of IDCT can by far outreach the range of ff_cropTbl[], leading
to overreads and potentially crashes.

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org
2012-03-06 10:47:42 -08:00
Ronald S. Bultje
bd66f073fe vp8: change int stride to ptrdiff_t stride.
On 64bit platforms with 32bit int, this means we won't have to sign-
extend the integer anymore.
2012-03-02 10:31:50 -08:00
Diego Biurrun
6168781f70 doxygen: do not include license boilerplate in Doxygen documentation 2011-07-15 00:52:09 +02:00
Mans Rullgard
2912e87a6c Replace FFmpeg with Libav in licence headers
Signed-off-by: Mans Rullgard <mans@mansr.com>
2011-03-19 13:33:20 +00:00
Mans Rullgard
a1c1d3c003 VP8: ARM NEON optimisations for dsp functions
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>
2011-02-07 16:08:23 +00:00
Ronald S. Bultje
22893e10ae VP8: don't overread edges on fourtap MC.
Fix C VP8 H+V MC functions which do two-dimensional 4/6-tap filters to
not overread beyond their edges if the second filter is 4-tap, since
the outer pixels aren't there anymore since
44002d8323.
2011-01-26 15:37:11 -05:00
Jason Garrett-Glaser
f311208cf1 VP8: much faster DC transform handling
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
2010-08-02 20:57:03 +00:00
Jason Garrett-Glaser
827d43bb9d VP8: move zeroing of luma DC block into the WHT
Lets us do the zeroing in asm instead of C.
Also makes it consistent with the way the regular iDCT code does it.

Originally committed as revision 24668 to svn://svn.ffmpeg.org/ffmpeg/trunk
2010-08-02 20:18:09 +00:00
Jason Garrett-Glaser
3ae079a3c8 VP8: optimize DC-only chroma case in the same way as luma.
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
2010-07-23 06:02:52 +00:00
Jason Garrett-Glaser
8a467b2d44 VP8: 30% faster idct_mb
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
2010-07-23 02:58:27 +00:00
Jason Garrett-Glaser
c25c776708 VP8: clear DCT blocks in iDCT instead of using clear_blocks.
~0.3% faster overall.

Originally committed as revision 24448 to svn://svn.ffmpeg.org/ffmpeg/trunk
2010-07-23 00:07:16 +00:00
Ronald S. Bultje
3facfc99da Change function prototypes for width=8 inner and mbedge loopfilter functions
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
2010-07-19 21:18:04 +00:00
David Conrad
5245c04da3 VP8: Move calculation of outer filter limit out of dsp functions for normal
filter to match the simple loop filter

Originally committed as revision 24010 to svn://svn.ffmpeg.org/ffmpeg/trunk
2010-07-02 21:04:45 +00:00
David Conrad
982fac7357 Altivec VP8 MC functions
Originally committed as revision 23884 to svn://svn.ffmpeg.org/ffmpeg/trunk
2010-06-29 06:42:17 +00:00
Jason Garrett-Glaser
95275094a5 Faster C VP8 normal inner loop filter
Originally committed as revision 23881 to svn://svn.ffmpeg.org/ffmpeg/trunk
2010-06-29 04:34:04 +00:00
Jason Garrett-Glaser
9942b6a1b0 Use crop table in C implementations of VP8 DSP functions.
Much faster VP8 C DSP functions; ~5-10% faster overall with asm off.

Originally committed as revision 23880 to svn://svn.ffmpeg.org/ffmpeg/trunk
2010-06-29 03:34:24 +00:00
Stefano Sabatini
a64fadf62b Fix linking if MMX is disabled.
Originally committed as revision 23839 to svn://svn.ffmpeg.org/ffmpeg/trunk
2010-06-27 23:25:04 +00:00
Jason Garrett-Glaser
0178d14fe5 First shot at VP8 optimizations:
- 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
2010-06-27 02:01:45 +00:00
David Conrad
0ef1dbedcb VP8 bilinear filter
Originally committed as revision 23813 to svn://svn.ffmpeg.org/ffmpeg/trunk
2010-06-27 01:46:29 +00:00
Jason Garrett-Glaser
15d31aa1e1 Really fix r23782
Originally committed as revision 23788 to svn://svn.ffmpeg.org/ffmpeg/trunk
2010-06-25 19:03:03 +00:00
Jason Garrett-Glaser
cd29c2b5a1 Fix c99ism in r23782
Originally committed as revision 23786 to svn://svn.ffmpeg.org/ffmpeg/trunk
2010-06-25 18:48:45 +00:00
Jason Garrett-Glaser
d6f8476be4 Make VP8 DSP functions take two strides
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
2010-06-25 18:14:07 +00:00
David Conrad
3b636f21da Native VP8 decoder.
Patch by David Conrad <lessen42 gmail com> and myself.

Originally committed as revision 23719 to svn://svn.ffmpeg.org/ffmpeg/trunk
2010-06-22 19:24:09 +00:00