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93 lines
4.1 KiB
93 lines
4.1 KiB
/* |
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* x86-optimized AC-3 DSP utils |
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* Copyright (c) 2011 Justin Ruggles |
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* |
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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 "libavutil/x86_cpu.h" |
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#include "dsputil_mmx.h" |
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#include "libavcodec/ac3dsp.h" |
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extern void ff_ac3_exponent_min_mmx (uint8_t *exp, int num_reuse_blocks, int nb_coefs); |
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extern void ff_ac3_exponent_min_mmxext(uint8_t *exp, int num_reuse_blocks, int nb_coefs); |
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extern void ff_ac3_exponent_min_sse2 (uint8_t *exp, int num_reuse_blocks, int nb_coefs); |
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extern int ff_ac3_max_msb_abs_int16_mmx (const int16_t *src, int len); |
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extern int ff_ac3_max_msb_abs_int16_mmx2 (const int16_t *src, int len); |
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extern int ff_ac3_max_msb_abs_int16_sse2 (const int16_t *src, int len); |
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extern int ff_ac3_max_msb_abs_int16_ssse3(const int16_t *src, int len); |
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extern void ff_ac3_lshift_int16_mmx (int16_t *src, unsigned int len, unsigned int shift); |
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extern void ff_ac3_lshift_int16_sse2(int16_t *src, unsigned int len, unsigned int shift); |
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extern void ff_ac3_rshift_int32_mmx (int32_t *src, unsigned int len, unsigned int shift); |
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extern void ff_ac3_rshift_int32_sse2(int32_t *src, unsigned int len, unsigned int shift); |
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extern void ff_float_to_fixed24_3dnow(int32_t *dst, const float *src, unsigned int len); |
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extern void ff_float_to_fixed24_sse (int32_t *dst, const float *src, unsigned int len); |
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extern void ff_float_to_fixed24_sse2 (int32_t *dst, const float *src, unsigned int len); |
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extern int ff_ac3_compute_mantissa_size_sse2(uint16_t mant_cnt[6][16]); |
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extern void ff_ac3_extract_exponents_3dnow(uint8_t *exp, int32_t *coef, int nb_coefs); |
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extern void ff_ac3_extract_exponents_sse2 (uint8_t *exp, int32_t *coef, int nb_coefs); |
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extern 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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#if HAVE_YASM |
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int mm_flags = av_get_cpu_flags(); |
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if (mm_flags & AV_CPU_FLAG_MMX) { |
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c->ac3_exponent_min = ff_ac3_exponent_min_mmx; |
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c->ac3_max_msb_abs_int16 = ff_ac3_max_msb_abs_int16_mmx; |
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c->ac3_lshift_int16 = ff_ac3_lshift_int16_mmx; |
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c->ac3_rshift_int32 = ff_ac3_rshift_int32_mmx; |
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} |
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if (mm_flags & AV_CPU_FLAG_3DNOW && HAVE_AMD3DNOW) { |
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c->extract_exponents = ff_ac3_extract_exponents_3dnow; |
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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 (mm_flags & AV_CPU_FLAG_MMXEXT && HAVE_MMXEXT) { |
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c->ac3_exponent_min = ff_ac3_exponent_min_mmxext; |
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c->ac3_max_msb_abs_int16 = ff_ac3_max_msb_abs_int16_mmx2; |
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} |
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if (mm_flags & AV_CPU_FLAG_SSE && HAVE_SSE) { |
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c->float_to_fixed24 = ff_float_to_fixed24_sse; |
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} |
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if (mm_flags & AV_CPU_FLAG_SSE2 && HAVE_SSE) { |
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c->ac3_exponent_min = ff_ac3_exponent_min_sse2; |
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c->ac3_max_msb_abs_int16 = ff_ac3_max_msb_abs_int16_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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if (!(mm_flags & AV_CPU_FLAG_SSE2SLOW)) { |
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c->ac3_lshift_int16 = ff_ac3_lshift_int16_sse2; |
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c->ac3_rshift_int32 = ff_ac3_rshift_int32_sse2; |
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} |
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} |
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if (mm_flags & AV_CPU_FLAG_SSSE3 && HAVE_SSSE3) { |
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c->ac3_max_msb_abs_int16 = ff_ac3_max_msb_abs_int16_ssse3; |
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if (!(mm_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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#endif |
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}
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