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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 4349 | Serge | 1 | /* |
| 2 | * This file is part of FFmpeg. |
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| 3 | * |
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| 4 | * FFmpeg is free software; you can redistribute it and/or |
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| 5 | * modify it under the terms of the GNU Lesser General Public |
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| 6 | * License as published by the Free Software Foundation; either |
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| 7 | * version 2.1 of the License, or (at your option) any later version. |
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| 8 | * |
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| 9 | * FFmpeg is distributed in the hope that it will be useful, |
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| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 12 | * Lesser General Public License for more details. |
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| 13 | * |
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| 14 | * You should have received a copy of the GNU Lesser General Public |
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| 15 | * License along with FFmpeg; if not, write to the Free Software |
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| 16 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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| 17 | */ |
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| 18 | |||
| 19 | #include "config.h" |
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| 20 | #include "libavutil/attributes.h" |
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| 21 | #include "libavutil/cpu.h" |
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| 22 | #include "libavutil/x86/cpu.h" |
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| 23 | #include "fft.h" |
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| 24 | |||
| 25 | av_cold void ff_fft_init_x86(FFTContext *s) |
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| 26 | { |
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| 27 | int cpu_flags = av_get_cpu_flags(); |
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| 28 | |||
| 29 | #if ARCH_X86_32 |
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| 30 | if (EXTERNAL_AMD3DNOW(cpu_flags)) { |
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| 31 | /* 3DNow! for K6-2/3 */ |
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| 32 | s->imdct_calc = ff_imdct_calc_3dnow; |
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| 33 | s->imdct_half = ff_imdct_half_3dnow; |
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| 34 | s->fft_calc = ff_fft_calc_3dnow; |
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| 35 | } |
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| 36 | if (EXTERNAL_AMD3DNOWEXT(cpu_flags)) { |
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| 37 | /* 3DNowEx for K7 */ |
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| 38 | s->imdct_calc = ff_imdct_calc_3dnowext; |
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| 39 | s->imdct_half = ff_imdct_half_3dnowext; |
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| 40 | s->fft_calc = ff_fft_calc_3dnowext; |
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| 41 | } |
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| 42 | #endif |
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| 43 | if (EXTERNAL_SSE(cpu_flags)) { |
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| 44 | /* SSE for P3/P4/K8 */ |
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| 45 | s->imdct_calc = ff_imdct_calc_sse; |
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| 46 | s->imdct_half = ff_imdct_half_sse; |
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| 47 | s->fft_permute = ff_fft_permute_sse; |
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| 48 | s->fft_calc = ff_fft_calc_sse; |
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| 49 | s->fft_permutation = FF_FFT_PERM_SWAP_LSBS; |
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| 50 | } |
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| 51 | if (EXTERNAL_AVX(cpu_flags) && s->nbits >= 5) { |
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| 52 | /* AVX for SB */ |
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| 53 | s->imdct_half = ff_imdct_half_avx; |
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| 54 | s->fft_calc = ff_fft_calc_avx; |
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| 55 | s->fft_permutation = FF_FFT_PERM_AVX; |
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| 56 | } |
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| 57 | } |