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16 Commits

Author SHA1 Message Date
Sean McGovern
c2d3f56107 fft: avoid a signed overflow 
As a signed integer, 1<<31 overflows, so force it to unsigned.

Signed-off-by: Alex Converse <alex.converse@gmail.com>
 2011-09-23 17:02:58 -07:00
Diego Biurrun
5e528cffcf x86: Add appropriate ifdefs around certain AVX functions. 
nasm versions prior to 2.09 have trouble assembling some of our AVX code.
Protect these sections by preprocessor macros to allow compilation to pass.
 2011-05-27 21:18:12 +02:00
Vitor Sessak
9d35fa520e Add AVX FFT implementation. 
Signed-off-by: Reinhard Tartler <siretart@tauware.de>
 2011-04-26 18:25:24 +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
Alex Converse
770c410fbb Fix ff_imdct_calc_sse() on gcc-4.6 
Gcc 4.6 only preserves the first value when using an array with an "m"
constraint.

Signed-off-by: Mans Rullgard <mans@mansr.com>
 2011-02-02 02:40:05 +00:00
Ramiro Polla
326bf69acc fft: mark xmm registers as clobbered in ff_imdct_calc_sse 
Originally committed as revision 25363 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-10-06 01:27:02 +00:00
Alex Converse
cb4f12466b imdct/x86: Use "s->mdct_size" instead of "1 << s->mdct_bits". 
It generates smaller cleaner code.

Originally committed as revision 24887 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-08-23 15:51:09 +00:00
Alex Converse
78b5c97d3e Convert ff_imdct_half_sse() to yasm. 
This is to avoid split asm sections that attempt to preserve some
registers between sections.

Originally committed as revision 24869 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-08-22 14:39:58 +00:00
Vitor Sessak
881fd7a62f Move SSE optimized 32-point DCT to its own file. Should fix breakage with YASM 
disabled.

Originally committed as revision 24078 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-07-06 17:48:23 +00:00
Vitor Sessak
4dcc4f8eaa SSE optimized 32-point DCT 
Originally committed as revision 24077 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-07-06 16:58:54 +00:00
Måns Rullgård
c67278098d Move array specifiers outside DECLARE_ALIGNED() invocations 
Originally committed as revision 21377 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-01-22 03:25:11 +00:00
Måns Rullgård
01b2214758 Merge FFTContext and MDCTContext 
Originally committed as revision 19931 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-09-20 17:30:20 +00:00
Måns Rullgård
f486321395 Move per-arch fft init bits into the corresponding subdirs 
Originally committed as revision 19864 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-09-15 21:14:14 +00:00
Ramiro Polla
74a841af8b Replace more uses of __attribute__((aligned)) by DECLARE_ALIGNED. 
Originally committed as revision 19089 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-06-04 23:25:09 +00:00
Aurelien Jacobs
b250f9c66d Change semantic of CONFIG_*, HAVE_* and ARCH_*. 
They are now always defined to either 0 or 1.

Originally committed as revision 16590 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-01-13 23:44:16 +00:00
Diego Biurrun
a6493a8fbd Rename libavcodec/i386/ --> libavcodec/x86/. 
It contains optimizations that are not specific to i386 and
libavutil uses this naming scheme already.

Originally committed as revision 16270 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-12-22 09:12:42 +00:00