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fd98594a88
x64 always has MMX, MMXEXT, SSE and SSE2 and this means that some functions for MMX, MMXEXT and 3dnow are always overridden by other functions (unless one e.g. explicitly disables SSE2) for x64. So given that the only systems that benefit from these functions are truely ancient 32bit x86s they are removed. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
95 lines
3.5 KiB
C
95 lines
3.5 KiB
C
/*
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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/ac3dsp.h"
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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_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_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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