| /* |
| * 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 "libavutil/attributes.h" |
| #include "libavutil/cpu.h" |
| #include "libavutil/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_YASM |
| #if ARCH_X86_32 |
| DECL(sse) |
| #endif |
| DECL(sse2) |
| DECL(sse3) |
| DECL(ssse3) |
| DECL(avx) |
| #endif /* HAVE_YASM */ |
| |
| 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); |
| |
| 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, |
| int 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_YASM |
| #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 |
| #if ARCH_X86_32 |
| DECL_IMDCT_BLOCKS(sse,sse) |
| #endif |
| 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_YASM */ |
| |
| av_cold void ff_mpadsp_init_x86(MPADSPContext *s) |
| { |
| av_unused int cpu_flags = av_get_cpu_flags(); |
| |
| 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]; |
| } |
| } |
| |
| #if HAVE_6REGS && HAVE_SSE_INLINE |
| if (INLINE_SSE(cpu_flags)) { |
| s->apply_window_float = apply_window_mp3; |
| } |
| #endif /* HAVE_SSE_INLINE */ |
| |
| #if HAVE_YASM |
| #if HAVE_SSE |
| #if ARCH_X86_32 |
| if (EXTERNAL_SSE(cpu_flags)) { |
| s->imdct36_blocks_float = imdct36_blocks_sse; |
| } |
| #endif |
| if (EXTERNAL_SSE2(cpu_flags)) { |
| s->imdct36_blocks_float = imdct36_blocks_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; |
| } |
| #endif |
| #endif /* HAVE_YASM */ |
| } |