On 04/01/2011 09:20 PM, Luca Barbato wrote:
On 04/01/2011 07:12 PM, Vitor Sessak wrote:
Hi,
The following patches add an AVX (an intel x86 extension) FFT
implementation. Since I do not have a Sandybridge myself, I have no idea
of its performance. Benchmarks (for ex., using fft-test -s) are thus
very welcome. Also welcome are suggestions for optimizing it further, in
particular the 8 point FFT (in the T8_AVX macro), which is not much
faster than the SSE version.
---
libavcodec/x86/fft.c | 9 +-
libavcodec/x86/fft.h | 1 +
libavcodec/x86/fft_mmx.asm | 320 ++++++++++++++++++++++++++++++++++++++++++--
libavcodec/x86/fft_sse.c | 12 ++
libavcodec/x86/x86inc.asm | 17 +++
libavutil/mem.c | 16 +--
Might be nicer have an fft_avx.asm file, beside that I don't have an avx
system.
It uses several macros from fft_mmx.asm...
-Vitor
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