forked from KolibriOS/kolibrios
58 lines
1.9 KiB
C
58 lines
1.9 KiB
C
/*
|
|
* This file is part of FFmpeg.
|
|
*
|
|
* FFmpeg is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* FFmpeg is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with FFmpeg; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#include "config.h"
|
|
#include "libavutil/attributes.h"
|
|
#include "libavutil/cpu.h"
|
|
#include "libavutil/x86/cpu.h"
|
|
#include "fft.h"
|
|
|
|
av_cold void ff_fft_init_x86(FFTContext *s)
|
|
{
|
|
int cpu_flags = av_get_cpu_flags();
|
|
|
|
#if ARCH_X86_32
|
|
if (EXTERNAL_AMD3DNOW(cpu_flags)) {
|
|
/* 3DNow! for K6-2/3 */
|
|
s->imdct_calc = ff_imdct_calc_3dnow;
|
|
s->imdct_half = ff_imdct_half_3dnow;
|
|
s->fft_calc = ff_fft_calc_3dnow;
|
|
}
|
|
if (EXTERNAL_AMD3DNOWEXT(cpu_flags)) {
|
|
/* 3DNowEx for K7 */
|
|
s->imdct_calc = ff_imdct_calc_3dnowext;
|
|
s->imdct_half = ff_imdct_half_3dnowext;
|
|
s->fft_calc = ff_fft_calc_3dnowext;
|
|
}
|
|
#endif
|
|
if (EXTERNAL_SSE(cpu_flags)) {
|
|
/* SSE for P3/P4/K8 */
|
|
s->imdct_calc = ff_imdct_calc_sse;
|
|
s->imdct_half = ff_imdct_half_sse;
|
|
s->fft_permute = ff_fft_permute_sse;
|
|
s->fft_calc = ff_fft_calc_sse;
|
|
s->fft_permutation = FF_FFT_PERM_SWAP_LSBS;
|
|
}
|
|
if (EXTERNAL_AVX_FAST(cpu_flags) && s->nbits >= 5) {
|
|
/* AVX for SB */
|
|
s->imdct_half = ff_imdct_half_avx;
|
|
s->fft_calc = ff_fft_calc_avx;
|
|
s->fft_permutation = FF_FFT_PERM_AVX;
|
|
}
|
|
}
|