2009-09-16 00:14:14 +03:00
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/*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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2013-08-04 14:24:15 +03:00
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#include "config.h"
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#include "libavutil/attributes.h"
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2010-09-08 18:07:14 +03:00
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#include "libavutil/cpu.h"
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2012-08-29 20:01:05 +03:00
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#include "libavutil/x86/cpu.h"
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2009-09-16 00:14:14 +03:00
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#include "fft.h"
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2012-10-05 20:54:10 +03:00
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av_cold void ff_fft_init_x86(FFTContext *s)
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2009-09-16 00:14:14 +03:00
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{
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2013-07-17 21:19:24 +03:00
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int cpu_flags = av_get_cpu_flags();
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2012-08-01 06:23:39 +03:00
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#if ARCH_X86_32
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2013-07-17 21:19:24 +03:00
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if (EXTERNAL_AMD3DNOW(cpu_flags)) {
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2012-05-12 09:59:00 +03:00
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/* 3DNow! for K6-2/3 */
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2012-05-27 13:17:28 +03:00
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s->imdct_calc = ff_imdct_calc_3dnow;
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s->imdct_half = ff_imdct_half_3dnow;
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s->fft_calc = ff_fft_calc_3dnow;
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2012-05-12 09:59:00 +03:00
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}
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2013-07-17 21:19:24 +03:00
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if (EXTERNAL_AMD3DNOWEXT(cpu_flags)) {
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2012-05-12 09:59:00 +03:00
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/* 3DNowEx for K7 */
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2012-08-01 16:31:43 +03:00
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s->imdct_calc = ff_imdct_calc_3dnowext;
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s->imdct_half = ff_imdct_half_3dnowext;
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s->fft_calc = ff_fft_calc_3dnowext;
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2012-05-12 09:59:00 +03:00
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}
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2012-08-01 06:23:39 +03:00
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#endif
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2013-07-17 21:19:24 +03:00
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if (EXTERNAL_SSE(cpu_flags)) {
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2009-09-16 00:14:14 +03:00
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/* SSE for P3/P4/K8 */
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s->imdct_calc = ff_imdct_calc_sse;
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s->imdct_half = ff_imdct_half_sse;
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s->fft_permute = ff_fft_permute_sse;
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s->fft_calc = ff_fft_calc_sse;
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2011-02-12 13:48:16 +02:00
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s->fft_permutation = FF_FFT_PERM_SWAP_LSBS;
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2012-05-12 09:59:00 +03:00
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}
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2015-05-31 19:20:29 +02:00
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if (EXTERNAL_AVX_FAST(cpu_flags) && s->nbits >= 5) {
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2012-05-12 09:59:00 +03:00
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/* AVX for SB */
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s->imdct_half = ff_imdct_half_avx;
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s->fft_calc = ff_fft_calc_avx;
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s->fft_permutation = FF_FFT_PERM_AVX;
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2009-09-16 00:14:14 +03:00
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}
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}
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