LCOV - code coverage report
Current view: top level - libavcodec/x86 - mpegaudiodsp.c (source / functions) Hit Total Coverage
Test: coverage.info Lines: 23 65 35.4 %
Date: 2017-10-18 21:45:51 Functions: 1 7 14.3 %

          Line data    Source code
       1             : /*
       2             :  * SIMD-optimized MP3 decoding functions
       3             :  * Copyright (c) 2010 Vitor Sessak
       4             :  *
       5             :  * This file is part of FFmpeg.
       6             :  *
       7             :  * FFmpeg is free software; you can redistribute it and/or
       8             :  * modify it under the terms of the GNU Lesser General Public
       9             :  * License as published by the Free Software Foundation; either
      10             :  * version 2.1 of the License, or (at your option) any later version.
      11             :  *
      12             :  * FFmpeg is distributed in the hope that it will be useful,
      13             :  * but WITHOUT ANY WARRANTY; without even the implied warranty of
      14             :  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      15             :  * Lesser General Public License for more details.
      16             :  *
      17             :  * You should have received a copy of the GNU Lesser General Public
      18             :  * License along with FFmpeg; if not, write to the Free Software
      19             :  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
      20             :  */
      21             : 
      22             : #include "libavutil/attributes.h"
      23             : #include "libavutil/cpu.h"
      24             : #include "libavutil/internal.h"
      25             : #include "libavutil/x86/asm.h"
      26             : #include "libavutil/x86/cpu.h"
      27             : #include "libavcodec/mpegaudiodsp.h"
      28             : 
      29             : #define DECL(CPU)\
      30             : static void imdct36_blocks_ ## CPU(float *out, float *buf, float *in, int count, int switch_point, int block_type);\
      31             : void ff_imdct36_float_ ## CPU(float *out, float *buf, float *in, float *win);
      32             : 
      33             : #if HAVE_X86ASM
      34             : #if ARCH_X86_32
      35             : DECL(sse)
      36             : #endif
      37             : DECL(sse2)
      38             : DECL(sse3)
      39             : DECL(ssse3)
      40             : DECL(avx)
      41             : #endif /* HAVE_X86ASM */
      42             : 
      43             : void ff_four_imdct36_float_sse(float *out, float *buf, float *in, float *win,
      44             :                                float *tmpbuf);
      45             : void ff_four_imdct36_float_avx(float *out, float *buf, float *in, float *win,
      46             :                                float *tmpbuf);
      47             : 
      48             : DECLARE_ALIGNED(16, static float, mdct_win_sse)[2][4][4*40];
      49             : 
      50             : #if HAVE_6REGS && HAVE_SSE_INLINE
      51             : 
      52             : #define MACS(rt, ra, rb) rt+=(ra)*(rb)
      53             : #define MLSS(rt, ra, rb) rt-=(ra)*(rb)
      54             : 
      55             : #define SUM8(op, sum, w, p)               \
      56             : {                                         \
      57             :     op(sum, (w)[0 * 64], (p)[0 * 64]);    \
      58             :     op(sum, (w)[1 * 64], (p)[1 * 64]);    \
      59             :     op(sum, (w)[2 * 64], (p)[2 * 64]);    \
      60             :     op(sum, (w)[3 * 64], (p)[3 * 64]);    \
      61             :     op(sum, (w)[4 * 64], (p)[4 * 64]);    \
      62             :     op(sum, (w)[5 * 64], (p)[5 * 64]);    \
      63             :     op(sum, (w)[6 * 64], (p)[6 * 64]);    \
      64             :     op(sum, (w)[7 * 64], (p)[7 * 64]);    \
      65             : }
      66             : 
      67           0 : static void apply_window(const float *buf, const float *win1,
      68             :                          const float *win2, float *sum1, float *sum2, int len)
      69             : {
      70           0 :     x86_reg count = - 4*len;
      71           0 :     const float *win1a = win1+len;
      72           0 :     const float *win2a = win2+len;
      73           0 :     const float *bufa  = buf+len;
      74           0 :     float *sum1a = sum1+len;
      75           0 :     float *sum2a = sum2+len;
      76             : 
      77             : 
      78             : #define MULT(a, b)                                 \
      79             :     "movaps " #a "(%1,%0), %%xmm1           \n\t"  \
      80             :     "movaps " #a "(%3,%0), %%xmm2           \n\t"  \
      81             :     "mulps         %%xmm2, %%xmm1           \n\t"  \
      82             :     "subps         %%xmm1, %%xmm0           \n\t"  \
      83             :     "mulps  " #b "(%2,%0), %%xmm2           \n\t"  \
      84             :     "subps         %%xmm2, %%xmm4           \n\t"  \
      85             : 
      86           0 :     __asm__ volatile(
      87             :             "1:                                   \n\t"
      88             :             "xorps       %%xmm0, %%xmm0           \n\t"
      89             :             "xorps       %%xmm4, %%xmm4           \n\t"
      90             : 
      91             :             MULT(   0,   0)
      92             :             MULT( 256,  64)
      93             :             MULT( 512, 128)
      94             :             MULT( 768, 192)
      95             :             MULT(1024, 256)
      96             :             MULT(1280, 320)
      97             :             MULT(1536, 384)
      98             :             MULT(1792, 448)
      99             : 
     100             :             "movaps      %%xmm0, (%4,%0)          \n\t"
     101             :             "movaps      %%xmm4, (%5,%0)          \n\t"
     102             :             "add            $16,  %0              \n\t"
     103             :             "jl              1b                   \n\t"
     104             :             :"+&r"(count)
     105             :             :"r"(win1a), "r"(win2a), "r"(bufa), "r"(sum1a), "r"(sum2a)
     106             :             );
     107             : 
     108             : #undef MULT
     109           0 : }
     110             : 
     111           0 : static void apply_window_mp3(float *in, float *win, int *unused, float *out,
     112             :                              ptrdiff_t incr)
     113             : {
     114           0 :     LOCAL_ALIGNED_16(float, suma, [17]);
     115           0 :     LOCAL_ALIGNED_16(float, sumb, [17]);
     116           0 :     LOCAL_ALIGNED_16(float, sumc, [17]);
     117           0 :     LOCAL_ALIGNED_16(float, sumd, [17]);
     118             : 
     119             :     float sum;
     120             : 
     121             :     /* copy to avoid wrap */
     122           0 :     __asm__ volatile(
     123             :             "movaps    0(%0), %%xmm0   \n\t" \
     124             :             "movaps   16(%0), %%xmm1   \n\t" \
     125             :             "movaps   32(%0), %%xmm2   \n\t" \
     126             :             "movaps   48(%0), %%xmm3   \n\t" \
     127             :             "movaps   %%xmm0,   0(%1) \n\t" \
     128             :             "movaps   %%xmm1,  16(%1) \n\t" \
     129             :             "movaps   %%xmm2,  32(%1) \n\t" \
     130             :             "movaps   %%xmm3,  48(%1) \n\t" \
     131             :             "movaps   64(%0), %%xmm0   \n\t" \
     132             :             "movaps   80(%0), %%xmm1   \n\t" \
     133             :             "movaps   96(%0), %%xmm2   \n\t" \
     134             :             "movaps  112(%0), %%xmm3   \n\t" \
     135             :             "movaps   %%xmm0,  64(%1) \n\t" \
     136             :             "movaps   %%xmm1,  80(%1) \n\t" \
     137             :             "movaps   %%xmm2,  96(%1) \n\t" \
     138             :             "movaps   %%xmm3, 112(%1) \n\t"
     139           0 :             ::"r"(in), "r"(in+512)
     140             :             :"memory"
     141             :             );
     142             : 
     143           0 :     apply_window(in + 16, win     , win + 512, suma, sumc, 16);
     144           0 :     apply_window(in + 32, win + 48, win + 640, sumb, sumd, 16);
     145             : 
     146           0 :     SUM8(MACS, suma[0], win + 32, in + 48);
     147             : 
     148           0 :     sumc[ 0] = 0;
     149           0 :     sumb[16] = 0;
     150           0 :     sumd[16] = 0;
     151             : 
     152             : #define SUMS(suma, sumb, sumc, sumd, out1, out2)               \
     153             :             "movups " #sumd "(%4),       %%xmm0          \n\t" \
     154             :             "shufps         $0x1b,       %%xmm0, %%xmm0  \n\t" \
     155             :             "subps  " #suma "(%1),       %%xmm0          \n\t" \
     156             :             "movaps        %%xmm0," #out1 "(%0)          \n\t" \
     157             : \
     158             :             "movups " #sumc "(%3),       %%xmm0          \n\t" \
     159             :             "shufps         $0x1b,       %%xmm0, %%xmm0  \n\t" \
     160             :             "addps  " #sumb "(%2),       %%xmm0          \n\t" \
     161             :             "movaps        %%xmm0," #out2 "(%0)          \n\t"
     162             : 
     163           0 :     if (incr == 1) {
     164           0 :         __asm__ volatile(
     165             :             SUMS( 0, 48,  4, 52,  0, 112)
     166             :             SUMS(16, 32, 20, 36, 16,  96)
     167             :             SUMS(32, 16, 36, 20, 32,  80)
     168             :             SUMS(48,  0, 52,  4, 48,  64)
     169             : 
     170             :             :"+&r"(out)
     171             :             :"r"(&suma[0]), "r"(&sumb[0]), "r"(&sumc[0]), "r"(&sumd[0])
     172             :             :"memory"
     173             :             );
     174           0 :         out += 16*incr;
     175             :     } else {
     176             :         int j;
     177           0 :         float *out2 = out + 32 * incr;
     178           0 :         out[0  ]  = -suma[   0];
     179           0 :         out += incr;
     180           0 :         out2 -= incr;
     181           0 :         for(j=1;j<16;j++) {
     182           0 :             *out  = -suma[   j] + sumd[16-j];
     183           0 :             *out2 =  sumb[16-j] + sumc[   j];
     184           0 :             out  += incr;
     185           0 :             out2 -= incr;
     186             :         }
     187             :     }
     188             : 
     189           0 :     sum = 0;
     190           0 :     SUM8(MLSS, sum, win + 16 + 32, in + 32);
     191           0 :     *out = sum;
     192           0 : }
     193             : 
     194             : #endif /* HAVE_6REGS && HAVE_SSE_INLINE */
     195             : 
     196             : #if HAVE_X86ASM
     197             : #define DECL_IMDCT_BLOCKS(CPU1, CPU2)                                       \
     198             : static void imdct36_blocks_ ## CPU1(float *out, float *buf, float *in,      \
     199             :                                int count, int switch_point, int block_type) \
     200             : {                                                                           \
     201             :     int align_end = count - (count & 3);                                \
     202             :     int j;                                                              \
     203             :     for (j = 0; j < align_end; j+= 4) {                                 \
     204             :         LOCAL_ALIGNED_16(float, tmpbuf, [1024]);                        \
     205             :         float *win = mdct_win_sse[switch_point && j < 4][block_type];   \
     206             :         /* apply window & overlap with previous buffer */               \
     207             :                                                                         \
     208             :         /* select window */                                             \
     209             :         ff_four_imdct36_float_ ## CPU2(out, buf, in, win, tmpbuf);      \
     210             :         in      += 4*18;                                                \
     211             :         buf     += 4*18;                                                \
     212             :         out     += 4;                                                   \
     213             :     }                                                                   \
     214             :     for (; j < count; j++) {                                            \
     215             :         /* apply window & overlap with previous buffer */               \
     216             :                                                                         \
     217             :         /* select window */                                             \
     218             :         int win_idx = (switch_point && j < 2) ? 0 : block_type;         \
     219             :         float *win = ff_mdct_win_float[win_idx + (4 & -(j & 1))];       \
     220             :                                                                         \
     221             :         ff_imdct36_float_ ## CPU1(out, buf, in, win);                   \
     222             :                                                                         \
     223             :         in  += 18;                                                      \
     224             :         buf++;                                                          \
     225             :         out++;                                                          \
     226             :     }                                                                   \
     227             : }
     228             : 
     229             : #if HAVE_SSE
     230             : #if ARCH_X86_32
     231             : DECL_IMDCT_BLOCKS(sse,sse)
     232             : #endif
     233           0 : DECL_IMDCT_BLOCKS(sse2,sse)
     234           0 : DECL_IMDCT_BLOCKS(sse3,sse)
     235           0 : DECL_IMDCT_BLOCKS(ssse3,sse)
     236             : #endif
     237             : #if HAVE_AVX_EXTERNAL
     238           0 : DECL_IMDCT_BLOCKS(avx,avx)
     239             : #endif
     240             : #endif /* HAVE_X86ASM */
     241             : 
     242         114 : av_cold void ff_mpadsp_init_x86(MPADSPContext *s)
     243             : {
     244         114 :     av_unused int cpu_flags = av_get_cpu_flags();
     245             : 
     246             :     int i, j;
     247         570 :     for (j = 0; j < 4; j++) {
     248       18696 :         for (i = 0; i < 40; i ++) {
     249       18240 :             mdct_win_sse[0][j][4*i    ] = ff_mdct_win_float[j    ][i];
     250       18240 :             mdct_win_sse[0][j][4*i + 1] = ff_mdct_win_float[j + 4][i];
     251       18240 :             mdct_win_sse[0][j][4*i + 2] = ff_mdct_win_float[j    ][i];
     252       18240 :             mdct_win_sse[0][j][4*i + 3] = ff_mdct_win_float[j + 4][i];
     253       18240 :             mdct_win_sse[1][j][4*i    ] = ff_mdct_win_float[0    ][i];
     254       18240 :             mdct_win_sse[1][j][4*i + 1] = ff_mdct_win_float[4    ][i];
     255       18240 :             mdct_win_sse[1][j][4*i + 2] = ff_mdct_win_float[j    ][i];
     256       18240 :             mdct_win_sse[1][j][4*i + 3] = ff_mdct_win_float[j + 4][i];
     257             :         }
     258             :     }
     259             : 
     260             : #if HAVE_6REGS && HAVE_SSE_INLINE
     261         114 :     if (INLINE_SSE(cpu_flags)) {
     262          23 :         s->apply_window_float = apply_window_mp3;
     263             :     }
     264             : #endif /* HAVE_SSE_INLINE */
     265             : 
     266             : #if HAVE_X86ASM
     267             : #if HAVE_SSE
     268             : #if ARCH_X86_32
     269             :     if (EXTERNAL_SSE(cpu_flags)) {
     270             :         s->imdct36_blocks_float = imdct36_blocks_sse;
     271             :     }
     272             : #endif
     273         114 :     if (EXTERNAL_SSE2(cpu_flags)) {
     274          23 :         s->imdct36_blocks_float = imdct36_blocks_sse2;
     275             :     }
     276         114 :     if (EXTERNAL_SSE3(cpu_flags)) {
     277          23 :         s->imdct36_blocks_float = imdct36_blocks_sse3;
     278             :     }
     279         114 :     if (EXTERNAL_SSSE3(cpu_flags)) {
     280          23 :         s->imdct36_blocks_float = imdct36_blocks_ssse3;
     281             :     }
     282             : #endif
     283             : #if HAVE_AVX_EXTERNAL
     284         114 :     if (EXTERNAL_AVX(cpu_flags)) {
     285          23 :         s->imdct36_blocks_float = imdct36_blocks_avx;
     286             :     }
     287             : #endif
     288             : #endif /* HAVE_X86ASM */
     289         114 : }

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