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56 lines
1.9 KiB
56 lines
1.9 KiB
/* |
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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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#include "libavutil/cpu.h" |
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#include "libavcodec/dsputil.h" |
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#include "fft.h" |
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av_cold void ff_fft_init_mmx(FFTContext *s) |
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{ |
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#if HAVE_YASM |
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int has_vectors = av_get_cpu_flags(); |
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if (has_vectors & AV_CPU_FLAG_SSE && HAVE_SSE) { |
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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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s->fft_permutation = FF_FFT_PERM_SWAP_LSBS; |
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} else if (has_vectors & AV_CPU_FLAG_3DNOWEXT && HAVE_AMD3DNOWEXT) { |
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/* 3DNowEx for K7 */ |
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s->imdct_calc = ff_imdct_calc_3dn2; |
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s->imdct_half = ff_imdct_half_3dn2; |
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s->fft_calc = ff_fft_calc_3dn2; |
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} else if (has_vectors & AV_CPU_FLAG_3DNOW && HAVE_AMD3DNOW) { |
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/* 3DNow! for K6-2/3 */ |
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s->imdct_calc = ff_imdct_calc_3dn; |
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s->imdct_half = ff_imdct_half_3dn; |
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s->fft_calc = ff_fft_calc_3dn; |
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} |
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#endif |
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} |
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#if CONFIG_DCT |
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av_cold void ff_dct_init_mmx(DCTContext *s) |
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{ |
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int has_vectors = av_get_cpu_flags(); |
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if (has_vectors & AV_CPU_FLAG_SSE && HAVE_SSE) |
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s->dct32 = ff_dct32_float_sse; |
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} |
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#endif |
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