Mercurial > hg > pmhd
diff ffmpeg/libavcodec/x86/ac3dsp_init.c @ 10:6840f77b83aa
commit
| author | Yading Song <yading.song@eecs.qmul.ac.uk> |
|---|---|
| date | Sun, 21 Apr 2013 10:55:35 +0200 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/ffmpeg/libavcodec/x86/ac3dsp_init.c Sun Apr 21 10:55:35 2013 +0200 @@ -0,0 +1,232 @@ +/* + * x86-optimized AC-3 DSP utils + * Copyright (c) 2011 Justin Ruggles + * + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include "libavutil/mem.h" +#include "libavutil/x86/asm.h" +#include "libavutil/x86/cpu.h" +#include "dsputil_mmx.h" +#include "libavcodec/ac3.h" +#include "libavcodec/ac3dsp.h" + +void ff_ac3_exponent_min_mmx (uint8_t *exp, int num_reuse_blocks, int nb_coefs); +void ff_ac3_exponent_min_mmxext(uint8_t *exp, int num_reuse_blocks, int nb_coefs); +void ff_ac3_exponent_min_sse2 (uint8_t *exp, int num_reuse_blocks, int nb_coefs); + +int ff_ac3_max_msb_abs_int16_mmx (const int16_t *src, int len); +int ff_ac3_max_msb_abs_int16_mmxext(const int16_t *src, int len); +int ff_ac3_max_msb_abs_int16_sse2 (const int16_t *src, int len); +int ff_ac3_max_msb_abs_int16_ssse3(const int16_t *src, int len); + +void ff_ac3_lshift_int16_mmx (int16_t *src, unsigned int len, unsigned int shift); +void ff_ac3_lshift_int16_sse2(int16_t *src, unsigned int len, unsigned int shift); + +void ff_ac3_rshift_int32_mmx (int32_t *src, unsigned int len, unsigned int shift); +void ff_ac3_rshift_int32_sse2(int32_t *src, unsigned int len, unsigned int shift); + +void ff_float_to_fixed24_3dnow(int32_t *dst, const float *src, unsigned int len); +void ff_float_to_fixed24_sse (int32_t *dst, const float *src, unsigned int len); +void ff_float_to_fixed24_sse2 (int32_t *dst, const float *src, unsigned int len); + +int ff_ac3_compute_mantissa_size_sse2(uint16_t mant_cnt[6][16]); + +void ff_ac3_extract_exponents_3dnow(uint8_t *exp, int32_t *coef, int nb_coefs); +void ff_ac3_extract_exponents_sse2 (uint8_t *exp, int32_t *coef, int nb_coefs); +void ff_ac3_extract_exponents_ssse3(uint8_t *exp, int32_t *coef, int nb_coefs); + +#if ARCH_X86_32 && defined(__INTEL_COMPILER) +# undef HAVE_7REGS +# define HAVE_7REGS 0 +#endif + +#if HAVE_SSE_INLINE && HAVE_7REGS + +#define IF1(x) x +#define IF0(x) + +#define MIX5(mono, stereo) \ + __asm__ volatile ( \ + "movss 0(%1), %%xmm5 \n" \ + "movss 8(%1), %%xmm6 \n" \ + "movss 24(%1), %%xmm7 \n" \ + "shufps $0, %%xmm5, %%xmm5 \n" \ + "shufps $0, %%xmm6, %%xmm6 \n" \ + "shufps $0, %%xmm7, %%xmm7 \n" \ + "1: \n" \ + "movaps (%0, %2), %%xmm0 \n" \ + "movaps (%0, %3), %%xmm1 \n" \ + "movaps (%0, %4), %%xmm2 \n" \ + "movaps (%0, %5), %%xmm3 \n" \ + "movaps (%0, %6), %%xmm4 \n" \ + "mulps %%xmm5, %%xmm0 \n" \ + "mulps %%xmm6, %%xmm1 \n" \ + "mulps %%xmm5, %%xmm2 \n" \ + "mulps %%xmm7, %%xmm3 \n" \ + "mulps %%xmm7, %%xmm4 \n" \ + stereo("addps %%xmm1, %%xmm0 \n") \ + "addps %%xmm1, %%xmm2 \n" \ + "addps %%xmm3, %%xmm0 \n" \ + "addps %%xmm4, %%xmm2 \n" \ + mono("addps %%xmm2, %%xmm0 \n") \ + "movaps %%xmm0, (%0, %2) \n" \ + stereo("movaps %%xmm2, (%0, %3) \n") \ + "add $16, %0 \n" \ + "jl 1b \n" \ + : "+&r"(i) \ + : "r"(matrix), \ + "r"(samples[0] + len), \ + "r"(samples[1] + len), \ + "r"(samples[2] + len), \ + "r"(samples[3] + len), \ + "r"(samples[4] + len) \ + : XMM_CLOBBERS("%xmm0", "%xmm1", "%xmm2", "%xmm3", \ + "%xmm4", "%xmm5", "%xmm6", "%xmm7",) \ + "memory" \ + ); + +#define MIX_MISC(stereo) \ + __asm__ volatile ( \ + "mov %5, %2 \n" \ + "1: \n" \ + "mov -%c7(%6, %2, %c8), %3 \n" \ + "movaps (%3, %0), %%xmm0 \n" \ + stereo("movaps %%xmm0, %%xmm1 \n") \ + "mulps %%xmm4, %%xmm0 \n" \ + stereo("mulps %%xmm5, %%xmm1 \n") \ + "2: \n" \ + "mov (%6, %2, %c8), %1 \n" \ + "movaps (%1, %0), %%xmm2 \n" \ + stereo("movaps %%xmm2, %%xmm3 \n") \ + "mulps (%4, %2, 8), %%xmm2 \n" \ + stereo("mulps 16(%4, %2, 8), %%xmm3 \n") \ + "addps %%xmm2, %%xmm0 \n" \ + stereo("addps %%xmm3, %%xmm1 \n") \ + "add $4, %2 \n" \ + "jl 2b \n" \ + "mov %5, %2 \n" \ + stereo("mov (%6, %2, %c8), %1 \n") \ + "movaps %%xmm0, (%3, %0) \n" \ + stereo("movaps %%xmm1, (%1, %0) \n") \ + "add $16, %0 \n" \ + "jl 1b \n" \ + : "+&r"(i), "=&r"(j), "=&r"(k), "=&r"(m) \ + : "r"(matrix_simd + in_ch), \ + "g"((intptr_t) - 4 * (in_ch - 1)), \ + "r"(samp + in_ch), \ + "i"(sizeof(float *)), "i"(sizeof(float *)/4) \ + : "memory" \ + ); + +static void ac3_downmix_sse(float **samples, float (*matrix)[2], + int out_ch, int in_ch, int len) +{ + int (*matrix_cmp)[2] = (int(*)[2])matrix; + intptr_t i, j, k, m; + + i = -len * sizeof(float); + if (in_ch == 5 && out_ch == 2 && + !(matrix_cmp[0][1] | matrix_cmp[2][0] | + matrix_cmp[3][1] | matrix_cmp[4][0] | + (matrix_cmp[1][0] ^ matrix_cmp[1][1]) | + (matrix_cmp[0][0] ^ matrix_cmp[2][1]))) { + MIX5(IF0, IF1); + } else if (in_ch == 5 && out_ch == 1 && + matrix_cmp[0][0] == matrix_cmp[2][0] && + matrix_cmp[3][0] == matrix_cmp[4][0]) { + MIX5(IF1, IF0); + } else { + DECLARE_ALIGNED(16, float, matrix_simd)[AC3_MAX_CHANNELS][2][4]; + float *samp[AC3_MAX_CHANNELS]; + + for (j = 0; j < in_ch; j++) + samp[j] = samples[j] + len; + + j = 2 * in_ch * sizeof(float); + __asm__ volatile ( + "1: \n" + "sub $8, %0 \n" + "movss (%2, %0), %%xmm4 \n" + "movss 4(%2, %0), %%xmm5 \n" + "shufps $0, %%xmm4, %%xmm4 \n" + "shufps $0, %%xmm5, %%xmm5 \n" + "movaps %%xmm4, (%1, %0, 4) \n" + "movaps %%xmm5, 16(%1, %0, 4) \n" + "jg 1b \n" + : "+&r"(j) + : "r"(matrix_simd), "r"(matrix) + : "memory" + ); + if (out_ch == 2) { + MIX_MISC(IF1); + } else { + MIX_MISC(IF0); + } + } +} + +#endif /* HAVE_SSE_INLINE && HAVE_7REGS */ + +av_cold void ff_ac3dsp_init_x86(AC3DSPContext *c, int bit_exact) +{ + int mm_flags = av_get_cpu_flags(); + + if (EXTERNAL_MMX(mm_flags)) { + c->ac3_exponent_min = ff_ac3_exponent_min_mmx; + c->ac3_max_msb_abs_int16 = ff_ac3_max_msb_abs_int16_mmx; + c->ac3_lshift_int16 = ff_ac3_lshift_int16_mmx; + c->ac3_rshift_int32 = ff_ac3_rshift_int32_mmx; + } + if (EXTERNAL_AMD3DNOW(mm_flags)) { + c->extract_exponents = ff_ac3_extract_exponents_3dnow; + if (!bit_exact) { + c->float_to_fixed24 = ff_float_to_fixed24_3dnow; + } + } + if (EXTERNAL_MMXEXT(mm_flags)) { + c->ac3_exponent_min = ff_ac3_exponent_min_mmxext; + c->ac3_max_msb_abs_int16 = ff_ac3_max_msb_abs_int16_mmxext; + } + if (EXTERNAL_SSE(mm_flags)) { + c->float_to_fixed24 = ff_float_to_fixed24_sse; + } + if (EXTERNAL_SSE2(mm_flags)) { + c->ac3_exponent_min = ff_ac3_exponent_min_sse2; + c->ac3_max_msb_abs_int16 = ff_ac3_max_msb_abs_int16_sse2; + c->float_to_fixed24 = ff_float_to_fixed24_sse2; + c->compute_mantissa_size = ff_ac3_compute_mantissa_size_sse2; + c->extract_exponents = ff_ac3_extract_exponents_sse2; + if (!(mm_flags & AV_CPU_FLAG_SSE2SLOW)) { + c->ac3_lshift_int16 = ff_ac3_lshift_int16_sse2; + c->ac3_rshift_int32 = ff_ac3_rshift_int32_sse2; + } + } + if (EXTERNAL_SSSE3(mm_flags)) { + c->ac3_max_msb_abs_int16 = ff_ac3_max_msb_abs_int16_ssse3; + if (!(mm_flags & AV_CPU_FLAG_ATOM)) { + c->extract_exponents = ff_ac3_extract_exponents_ssse3; + } + } + +#if HAVE_SSE_INLINE && HAVE_7REGS + if (INLINE_SSE(mm_flags)) { + c->downmix = ac3_downmix_sse; + } +#endif +}