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113 lines
4.3 KiB
113 lines
4.3 KiB
/* |
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* x86-optimized AC-3 DSP functions |
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* Copyright (c) 2011 Justin Ruggles |
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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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#include "libavutil/attributes.h" |
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#include "libavutil/x86/asm.h" |
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#include "libavutil/x86/cpu.h" |
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#include "libavcodec/ac3.h" |
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#include "libavcodec/ac3dsp.h" |
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void ff_ac3_exponent_min_mmx (uint8_t *exp, int num_reuse_blocks, int nb_coefs); |
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void ff_ac3_exponent_min_mmxext(uint8_t *exp, int num_reuse_blocks, int nb_coefs); |
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void ff_ac3_exponent_min_sse2 (uint8_t *exp, int num_reuse_blocks, int nb_coefs); |
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void ff_float_to_fixed24_3dnow(int32_t *dst, const float *src, unsigned int len); |
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void ff_float_to_fixed24_sse (int32_t *dst, const float *src, unsigned int len); |
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void ff_float_to_fixed24_sse2 (int32_t *dst, const float *src, unsigned int len); |
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int ff_ac3_compute_mantissa_size_sse2(uint16_t mant_cnt[6][16]); |
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void ff_ac3_extract_exponents_sse2 (uint8_t *exp, int32_t *coef, int nb_coefs); |
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void ff_ac3_extract_exponents_ssse3(uint8_t *exp, int32_t *coef, int nb_coefs); |
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av_cold void ff_ac3dsp_init_x86(AC3DSPContext *c, int bit_exact) |
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{ |
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int cpu_flags = av_get_cpu_flags(); |
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if (EXTERNAL_MMX(cpu_flags)) { |
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c->ac3_exponent_min = ff_ac3_exponent_min_mmx; |
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} |
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if (EXTERNAL_AMD3DNOW(cpu_flags)) { |
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if (!bit_exact) { |
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c->float_to_fixed24 = ff_float_to_fixed24_3dnow; |
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} |
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} |
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if (EXTERNAL_MMXEXT(cpu_flags)) { |
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c->ac3_exponent_min = ff_ac3_exponent_min_mmxext; |
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} |
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if (EXTERNAL_SSE(cpu_flags)) { |
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c->float_to_fixed24 = ff_float_to_fixed24_sse; |
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} |
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if (EXTERNAL_SSE2(cpu_flags)) { |
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c->ac3_exponent_min = ff_ac3_exponent_min_sse2; |
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c->float_to_fixed24 = ff_float_to_fixed24_sse2; |
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c->compute_mantissa_size = ff_ac3_compute_mantissa_size_sse2; |
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c->extract_exponents = ff_ac3_extract_exponents_sse2; |
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} |
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if (EXTERNAL_SSSE3(cpu_flags)) { |
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if (!(cpu_flags & AV_CPU_FLAG_ATOM)) |
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c->extract_exponents = ff_ac3_extract_exponents_ssse3; |
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} |
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} |
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#define DOWNMIX_FUNC_OPT(ch, opt) \ |
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void ff_ac3_downmix_ ## ch ## _to_1_ ## opt(float **samples, \ |
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float **matrix, int len); \ |
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void ff_ac3_downmix_ ## ch ## _to_2_ ## opt(float **samples, \ |
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float **matrix, int len); |
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#define DOWNMIX_FUNCS(opt) \ |
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DOWNMIX_FUNC_OPT(3, opt) \ |
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DOWNMIX_FUNC_OPT(4, opt) \ |
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DOWNMIX_FUNC_OPT(5, opt) \ |
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DOWNMIX_FUNC_OPT(6, opt) |
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DOWNMIX_FUNCS(sse) |
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DOWNMIX_FUNCS(avx) |
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DOWNMIX_FUNCS(fma3) |
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void ff_ac3dsp_set_downmix_x86(AC3DSPContext *c) |
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{ |
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int cpu_flags = av_get_cpu_flags(); |
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#define SET_DOWNMIX(ch, suf, SUF) \ |
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if (ch == c->in_channels) { \ |
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if (EXTERNAL_ ## SUF (cpu_flags)) { \ |
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if (c->out_channels == 1) \ |
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c->downmix = ff_ac3_downmix_ ## ch ## _to_1_ ## suf; \ |
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else \ |
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c->downmix = ff_ac3_downmix_ ## ch ## _to_2_ ## suf; \ |
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} \ |
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} |
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#define SET_DOWNMIX_ALL(suf, SUF) \ |
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SET_DOWNMIX(3, suf, SUF) \ |
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SET_DOWNMIX(4, suf, SUF) \ |
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SET_DOWNMIX(5, suf, SUF) \ |
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SET_DOWNMIX(6, suf, SUF) |
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SET_DOWNMIX_ALL(sse, SSE) |
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if (!(cpu_flags & AV_CPU_FLAG_AVXSLOW)) { |
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SET_DOWNMIX_ALL(avx, AVX) |
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SET_DOWNMIX_ALL(fma3, FMA3) |
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} |
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}
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