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51 lines
1.5 KiB
51 lines
1.5 KiB
/* |
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* This file is part of Libav. |
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* |
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* Libav 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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* Libav 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 Libav; 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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#include "config.h" |
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#include "libavutil/attributes.h" |
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#include "libavutil/cpu.h" |
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#include "libavutil/x86/cpu.h" |
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#include "fft.h" |
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av_cold void ff_fft_init_x86(FFTContext *s) |
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{ |
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int cpu_flags = av_get_cpu_flags(); |
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#if ARCH_X86_32 |
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if (EXTERNAL_AMD3DNOW(cpu_flags)) { |
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s->fft_calc = ff_fft_calc_3dnow; |
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} |
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if (EXTERNAL_AMD3DNOWEXT(cpu_flags)) { |
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s->fft_calc = ff_fft_calc_3dnowext; |
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} |
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#endif /* ARCH_X86_32 */ |
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if (EXTERNAL_SSE(cpu_flags)) { |
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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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s->fft_permutation = FF_FFT_PERM_SWAP_LSBS; |
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} |
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if (EXTERNAL_AVX_FAST(cpu_flags) && s->nbits >= 5) { |
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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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} |
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}
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