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ffmpeg / libavcodec / x86 / fft.c @ 12802ec0

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# Date Author Comment
e6b1ed69 02/13/2011 02:36 PM Loren Merritt

FFT: factor a shuffle out of the inner loop and merge it into fft_permute.

6% faster SSE FFT on Conroe, 2.5% on Penryn.

Signed-off-by: Janne Grunau <>

c6c98d08 09/08/2010 03:07 PM Stefano Sabatini

Move mm_support() from libavcodec to libavutil, make it a public
function and rename it to av_get_cpu_flags().

Originally committed as revision 25076 to svn://

7160bb71 09/04/2010 09:59 AM Stefano Sabatini

Rename FF_MM_ symbols related to CPU features flags as AV_CPU_FLAG_
symbols, and move them from libavcodec/avcodec.h to libavutil/cpu.h.

Originally committed as revision 25040 to svn://

881fd7a6 07/06/2010 05:48 PM Vitor Sessak

Move SSE optimized 32-point DCT to its own file. Should fix breakage with YASM

Originally committed as revision 24078 to svn://

4dcc4f8e 07/06/2010 04:58 PM Vitor Sessak

SSE optimized 32-point DCT

Originally committed as revision 24077 to svn://

f4863213 09/15/2009 09:14 PM Måns Rullgård

Move per-arch fft init bits into the corresponding subdirs

Originally committed as revision 19864 to svn://