| /* | |
| * SIMD-optimized MP3 decoding functions | |
| * Copyright (c) 2010 Vitor Sessak | |
| * | |
| * 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 <stddef.h> | |
| #include "config.h" | |
| #include "libavutil/attributes.h" | |
| #include "libavutil/cpu.h" | |
| #include "libavutil/mem_internal.h" | |
| #include "libavutil/x86/asm.h" | |
| #include "libavutil/x86/cpu.h" | |
| #include "libavcodec/mpegaudiodsp.h" | |
| #define DECL(CPU)\ | |
| static void imdct36_blocks_ ## CPU(float *out, float *buf, float *in, int count, int switch_point, int block_type);\ | |
| void ff_imdct36_float_ ## CPU(float *out, float *buf, float *in, float *win); | |
| #if HAVE_X86ASM | |
| DECL(sse2) | |
| DECL(sse3) | |
| DECL(ssse3) | |
| DECL(avx) | |
| #endif /* HAVE_X86ASM */ | |
| void ff_four_imdct36_float_sse(float *out, float *buf, float *in, float *win, | |
| float *tmpbuf); | |
| void ff_four_imdct36_float_avx(float *out, float *buf, float *in, float *win, | |
| float *tmpbuf); | |
| void ff_dct32_float_sse2(float *out, const float *in); | |
| void ff_dct32_float_avx (float *out, const float *in); | |
| DECLARE_ALIGNED(16, static float, mdct_win_sse)[2][4][4*40]; | |
| #if HAVE_6REGS && HAVE_SSE_INLINE | |
| #define MACS(rt, ra, rb) rt+=(ra)*(rb) | |
| #define MLSS(rt, ra, rb) rt-=(ra)*(rb) | |
| #define SUM8(op, sum, w, p) \ | |
| { \ | |
| op(sum, (w)[0 * 64], (p)[0 * 64]); \ | |
| op(sum, (w)[1 * 64], (p)[1 * 64]); \ | |
| op(sum, (w)[2 * 64], (p)[2 * 64]); \ | |
| op(sum, (w)[3 * 64], (p)[3 * 64]); \ | |
| op(sum, (w)[4 * 64], (p)[4 * 64]); \ | |
| op(sum, (w)[5 * 64], (p)[5 * 64]); \ | |
| op(sum, (w)[6 * 64], (p)[6 * 64]); \ | |
| op(sum, (w)[7 * 64], (p)[7 * 64]); \ | |
| } | |
| static void apply_window(const float *buf, const float *win1, | |
| const float *win2, float *sum1, float *sum2, int len) | |
| { | |
| x86_reg count = - 4*len; | |
| const float *win1a = win1+len; | |
| const float *win2a = win2+len; | |
| const float *bufa = buf+len; | |
| float *sum1a = sum1+len; | |
| float *sum2a = sum2+len; | |
| #define MULT(a, b) \ | |
| "movaps " #a "(%1,%0), %%xmm1 \n\t" \ | |
| "movaps " #a "(%3,%0), %%xmm2 \n\t" \ | |
| "mulps %%xmm2, %%xmm1 \n\t" \ | |
| "subps %%xmm1, %%xmm0 \n\t" \ | |
| "mulps " #b "(%2,%0), %%xmm2 \n\t" \ | |
| "subps %%xmm2, %%xmm4 \n\t" \ | |
| __asm__ volatile( | |
| "1: \n\t" | |
| "xorps %%xmm0, %%xmm0 \n\t" | |
| "xorps %%xmm4, %%xmm4 \n\t" | |
| MULT( 0, 0) | |
| MULT( 256, 64) | |
| MULT( 512, 128) | |
| MULT( 768, 192) | |
| MULT(1024, 256) | |
| MULT(1280, 320) | |
| MULT(1536, 384) | |
| MULT(1792, 448) | |
| "movaps %%xmm0, (%4,%0) \n\t" | |
| "movaps %%xmm4, (%5,%0) \n\t" | |
| "add $16, %0 \n\t" | |
| "jl 1b \n\t" | |
| :"+&r"(count) | |
| :"r"(win1a), "r"(win2a), "r"(bufa), "r"(sum1a), "r"(sum2a) | |
| ); | |
| #undef MULT | |
| } | |
| static void apply_window_mp3(float *in, float *win, int *unused, float *out, | |
| ptrdiff_t incr) | |
| { | |
| LOCAL_ALIGNED_16(float, suma, [17]); | |
| LOCAL_ALIGNED_16(float, sumb, [17]); | |
| LOCAL_ALIGNED_16(float, sumc, [17]); | |
| LOCAL_ALIGNED_16(float, sumd, [17]); | |
| float sum; | |
| /* copy to avoid wrap */ | |
| __asm__ volatile( | |
| "movaps 0(%0), %%xmm0 \n\t" \ | |
| "movaps 16(%0), %%xmm1 \n\t" \ | |
| "movaps 32(%0), %%xmm2 \n\t" \ | |
| "movaps 48(%0), %%xmm3 \n\t" \ | |
| "movaps %%xmm0, 0(%1) \n\t" \ | |
| "movaps %%xmm1, 16(%1) \n\t" \ | |
| "movaps %%xmm2, 32(%1) \n\t" \ | |
| "movaps %%xmm3, 48(%1) \n\t" \ | |
| "movaps 64(%0), %%xmm0 \n\t" \ | |
| "movaps 80(%0), %%xmm1 \n\t" \ | |
| "movaps 96(%0), %%xmm2 \n\t" \ | |
| "movaps 112(%0), %%xmm3 \n\t" \ | |
| "movaps %%xmm0, 64(%1) \n\t" \ | |
| "movaps %%xmm1, 80(%1) \n\t" \ | |
| "movaps %%xmm2, 96(%1) \n\t" \ | |
| "movaps %%xmm3, 112(%1) \n\t" | |
| ::"r"(in), "r"(in+512) | |
| :"memory" | |
| ); | |
| apply_window(in + 16, win , win + 512, suma, sumc, 16); | |
| apply_window(in + 32, win + 48, win + 640, sumb, sumd, 16); | |
| SUM8(MACS, suma[0], win + 32, in + 48); | |
| sumc[ 0] = 0; | |
| sumb[16] = 0; | |
| sumd[16] = 0; | |
| #define SUMS(suma, sumb, sumc, sumd, out1, out2) \ | |
| "movups " #sumd "(%4), %%xmm0 \n\t" \ | |
| "shufps $0x1b, %%xmm0, %%xmm0 \n\t" \ | |
| "subps " #suma "(%1), %%xmm0 \n\t" \ | |
| "movaps %%xmm0," #out1 "(%0) \n\t" \ | |
| \ | |
| "movups " #sumc "(%3), %%xmm0 \n\t" \ | |
| "shufps $0x1b, %%xmm0, %%xmm0 \n\t" \ | |
| "addps " #sumb "(%2), %%xmm0 \n\t" \ | |
| "movaps %%xmm0," #out2 "(%0) \n\t" | |
| if (incr == 1) { | |
| __asm__ volatile( | |
| SUMS( 0, 48, 4, 52, 0, 112) | |
| SUMS(16, 32, 20, 36, 16, 96) | |
| SUMS(32, 16, 36, 20, 32, 80) | |
| SUMS(48, 0, 52, 4, 48, 64) | |
| :"+&r"(out) | |
| :"r"(&suma[0]), "r"(&sumb[0]), "r"(&sumc[0]), "r"(&sumd[0]) | |
| :"memory" | |
| ); | |
| out += 16*incr; | |
| } else { | |
| int j; | |
| float *out2 = out + 32 * incr; | |
| out[0 ] = -suma[ 0]; | |
| out += incr; | |
| out2 -= incr; | |
| for(j=1;j<16;j++) { | |
| *out = -suma[ j] + sumd[16-j]; | |
| *out2 = sumb[16-j] + sumc[ j]; | |
| out += incr; | |
| out2 -= incr; | |
| } | |
| } | |
| sum = 0; | |
| SUM8(MLSS, sum, win + 16 + 32, in + 32); | |
| *out = sum; | |
| } | |
| #endif /* HAVE_6REGS && HAVE_SSE_INLINE */ | |
| #if HAVE_X86ASM | |
| #define DECL_IMDCT_BLOCKS(CPU1, CPU2) \ | |
| static void imdct36_blocks_ ## CPU1(float *out, float *buf, float *in, \ | |
| int count, int switch_point, int block_type) \ | |
| { \ | |
| int align_end = count - (count & 3); \ | |
| int j; \ | |
| for (j = 0; j < align_end; j+= 4) { \ | |
| LOCAL_ALIGNED_16(float, tmpbuf, [1024]); \ | |
| float *win = mdct_win_sse[switch_point && j < 4][block_type]; \ | |
| /* apply window & overlap with previous buffer */ \ | |
| \ | |
| /* select window */ \ | |
| ff_four_imdct36_float_ ## CPU2(out, buf, in, win, tmpbuf); \ | |
| in += 4*18; \ | |
| buf += 4*18; \ | |
| out += 4; \ | |
| } \ | |
| for (; j < count; j++) { \ | |
| /* apply window & overlap with previous buffer */ \ | |
| \ | |
| /* select window */ \ | |
| int win_idx = (switch_point && j < 2) ? 0 : block_type; \ | |
| float *win = ff_mdct_win_float[win_idx + (4 & -(j & 1))]; \ | |
| \ | |
| ff_imdct36_float_ ## CPU1(out, buf, in, win); \ | |
| \ | |
| in += 18; \ | |
| buf++; \ | |
| out++; \ | |
| } \ | |
| } | |
| #if HAVE_SSE | |
| DECL_IMDCT_BLOCKS(sse2,sse) | |
| DECL_IMDCT_BLOCKS(sse3,sse) | |
| DECL_IMDCT_BLOCKS(ssse3,sse) | |
| #endif | |
| #if HAVE_AVX_EXTERNAL | |
| DECL_IMDCT_BLOCKS(avx,avx) | |
| #endif | |
| #endif /* HAVE_X86ASM */ | |
| av_cold void ff_mpadsp_init_x86_tabs(void) | |
| { | |
| int i, j; | |
| for (j = 0; j < 4; j++) { | |
| for (i = 0; i < 40; i ++) { | |
| mdct_win_sse[0][j][4*i ] = ff_mdct_win_float[j ][i]; | |
| mdct_win_sse[0][j][4*i + 1] = ff_mdct_win_float[j + 4][i]; | |
| mdct_win_sse[0][j][4*i + 2] = ff_mdct_win_float[j ][i]; | |
| mdct_win_sse[0][j][4*i + 3] = ff_mdct_win_float[j + 4][i]; | |
| mdct_win_sse[1][j][4*i ] = ff_mdct_win_float[0 ][i]; | |
| mdct_win_sse[1][j][4*i + 1] = ff_mdct_win_float[4 ][i]; | |
| mdct_win_sse[1][j][4*i + 2] = ff_mdct_win_float[j ][i]; | |
| mdct_win_sse[1][j][4*i + 3] = ff_mdct_win_float[j + 4][i]; | |
| } | |
| } | |
| } | |
| av_cold void ff_mpadsp_init_x86(MPADSPContext *s) | |
| { | |
| av_unused int cpu_flags = av_get_cpu_flags(); | |
| #if HAVE_6REGS && HAVE_SSE_INLINE | |
| if (INLINE_SSE(cpu_flags)) { | |
| s->apply_window_float = apply_window_mp3; | |
| } | |
| #endif /* HAVE_SSE_INLINE */ | |
| #if HAVE_X86ASM | |
| #if HAVE_SSE | |
| if (EXTERNAL_SSE2(cpu_flags)) { | |
| s->imdct36_blocks_float = imdct36_blocks_sse2; | |
| s->dct32_float = ff_dct32_float_sse2; | |
| } | |
| if (EXTERNAL_SSE3(cpu_flags)) { | |
| s->imdct36_blocks_float = imdct36_blocks_sse3; | |
| } | |
| if (EXTERNAL_SSSE3(cpu_flags)) { | |
| s->imdct36_blocks_float = imdct36_blocks_ssse3; | |
| } | |
| #endif | |
| #if HAVE_AVX_EXTERNAL | |
| if (EXTERNAL_AVX(cpu_flags)) { | |
| s->imdct36_blocks_float = imdct36_blocks_avx; | |
| } | |
| if (EXTERNAL_AVX_FAST(cpu_flags)) | |
| s->dct32_float = ff_dct32_float_avx; | |
| #endif | |
| #endif /* HAVE_X86ASM */ | |
| } |