ffmpeg/libavcodec/x86/fmtconvert_init.c

   1 /*
   2  * Format Conversion Utils
   3  * Copyright (c) 2000, 2001 Fabrice Bellard
   4  * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
   5  *
   6  * MMX optimization by Nick Kurshev <nickols_k@mail.ru>
   7  *
   8  * This file is part of FFmpeg.
   9  *
  10  * FFmpeg is free software; you can redistribute it and/or
  11  * modify it under the terms of the GNU Lesser General Public
  12  * License as published by the Free Software Foundation; either
  13  * version 2.1 of the License, or (at your option) any later version.
  14  *
  15  * FFmpeg is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18  * Lesser General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU Lesser General Public
  21  * License along with FFmpeg; if not, write to the Free Software
  22  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  23  */
  24
  25 #include "libavutil/attributes.h"
  26 #include "libavutil/cpu.h"
  27 #include "libavutil/x86/asm.h"
  28 #include "libavutil/x86/cpu.h"
  29 #include "libavcodec/fmtconvert.h"
  30
  31 #if HAVE_YASM
  32
  33 void ff_int32_to_float_fmul_scalar_sse (float *dst, const int32_t *src, float mul, int len);
  34 void ff_int32_to_float_fmul_scalar_sse2(float *dst, const int32_t *src, float mul, int len);
  35 void ff_int32_to_float_fmul_array8_sse (FmtConvertContext *c, float *dst, const int32_t *src,
  36                                         const float *mul, int len);
  37 void ff_int32_to_float_fmul_array8_sse2(FmtConvertContext *c, float *dst, const int32_t *src,
  38                                         const float *mul, int len);
  39
  40 void ff_float_to_int16_3dnow(int16_t *dst, const float *src, long len);
  41 void ff_float_to_int16_sse  (int16_t *dst, const float *src, long len);
  42 void ff_float_to_int16_sse2 (int16_t *dst, const float *src, long len);
  43
  44 void ff_float_to_int16_step_3dnow(int16_t *dst, const float *src, long len, long step);
  45 void ff_float_to_int16_step_sse  (int16_t *dst, const float *src, long len, long step);
  46 void ff_float_to_int16_step_sse2 (int16_t *dst, const float *src, long len, long step);
  47
  48 void ff_float_to_int16_interleave2_3dnow(int16_t *dst, const float **src, long len);
  49 void ff_float_to_int16_interleave2_sse  (int16_t *dst, const float **src, long len);
  50 void ff_float_to_int16_interleave2_sse2 (int16_t *dst, const float **src, long len);
  51
  52 void ff_float_to_int16_interleave6_sse(int16_t *dst, const float **src, int len);
  53 void ff_float_to_int16_interleave6_3dnow(int16_t *dst, const float **src, int len);
  54 void ff_float_to_int16_interleave6_3dnowext(int16_t *dst, const float **src, int len);
  55
  56 #define ff_float_to_int16_interleave6_sse2 ff_float_to_int16_interleave6_sse
  57
  58 #define FLOAT_TO_INT16_INTERLEAVE(cpu) \
  59 /* gcc pessimizes register allocation if this is in the same function as float_to_int16_interleave_sse2*/\
  60 static av_noinline void float_to_int16_interleave_misc_##cpu(int16_t *dst, const float **src, long len, int channels){\
  61     int c;\
  62     for(c=0; c<channels; c++){\
  63         ff_float_to_int16_step_##cpu(dst+c, src[c], len, channels);\
  64     }\
  65 }\
  66 \
  67 static void float_to_int16_interleave_##cpu(int16_t *dst, const float **src, long len, int channels){\
  68     if(channels==1)\
  69         ff_float_to_int16_##cpu(dst, src[0], len);\
  70     else if(channels==2){\
  71         ff_float_to_int16_interleave2_##cpu(dst, src, len);\
  72     }else if(channels==6){\
  73         ff_float_to_int16_interleave6_##cpu(dst, src, len);\
  74     }else\
  75         float_to_int16_interleave_misc_##cpu(dst, src, len, channels);\
  76 }
  77
  78 FLOAT_TO_INT16_INTERLEAVE(3dnow)
  79 FLOAT_TO_INT16_INTERLEAVE(sse)
  80 FLOAT_TO_INT16_INTERLEAVE(sse2)
  81
  82 static void float_to_int16_interleave_3dnowext(int16_t *dst, const float **src,
  83                                                long len, int channels)
  84 {
  85     if(channels==6)
  86         ff_float_to_int16_interleave6_3dnowext(dst, src, len);
  87     else
  88         float_to_int16_interleave_3dnow(dst, src, len, channels);
  89 }
  90
  91 void ff_float_interleave2_mmx(float *dst, const float **src, unsigned int len);
  92 void ff_float_interleave2_sse(float *dst, const float **src, unsigned int len);
  93
  94 void ff_float_interleave6_mmx(float *dst, const float **src, unsigned int len);
  95 void ff_float_interleave6_sse(float *dst, const float **src, unsigned int len);
  96
  97 static void float_interleave_mmx(float *dst, const float **src,
  98                                  unsigned int len, int channels)
  99 {
 100     if (channels == 2) {
 101         ff_float_interleave2_mmx(dst, src, len);
 102     } else if (channels == 6)
 103         ff_float_interleave6_mmx(dst, src, len);
 104     else
 105         ff_float_interleave_c(dst, src, len, channels);
 106 }
 107
 108 static void float_interleave_sse(float *dst, const float **src,
 109                                  unsigned int len, int channels)
 110 {
 111     if (channels == 2) {
 112         ff_float_interleave2_sse(dst, src, len);
 113     } else if (channels == 6)
 114         ff_float_interleave6_sse(dst, src, len);
 115     else
 116         ff_float_interleave_c(dst, src, len, channels);
 117 }
 118 #endif /* HAVE_YASM */
 119
 120 av_cold void ff_fmt_convert_init_x86(FmtConvertContext *c, AVCodecContext *avctx)
 121 {
 122 #if HAVE_YASM
 123     int cpu_flags = av_get_cpu_flags();
 124
 125     if (EXTERNAL_MMX(cpu_flags)) {
 126         c->float_interleave = float_interleave_mmx;
 127     }
 128     if (EXTERNAL_AMD3DNOW(cpu_flags)) {
 129         if (!(avctx->flags & CODEC_FLAG_BITEXACT)) {
 130             c->float_to_int16            = ff_float_to_int16_3dnow;
 131             c->float_to_int16_interleave = float_to_int16_interleave_3dnow;
 132         }
 133     }
 134     if (EXTERNAL_AMD3DNOWEXT(cpu_flags)) {
 135         if (!(avctx->flags & CODEC_FLAG_BITEXACT)) {
 136             c->float_to_int16_interleave = float_to_int16_interleave_3dnowext;
 137         }
 138     }
 139     if (EXTERNAL_SSE(cpu_flags)) {
 140         c->int32_to_float_fmul_scalar = ff_int32_to_float_fmul_scalar_sse;
 141         c->int32_to_float_fmul_array8 = ff_int32_to_float_fmul_array8_sse;
 142         c->float_to_int16             = ff_float_to_int16_sse;
 143         c->float_to_int16_interleave  = float_to_int16_interleave_sse;
 144         c->float_interleave           = float_interleave_sse;
 145     }
 146     if (EXTERNAL_SSE2(cpu_flags)) {
 147         c->int32_to_float_fmul_scalar = ff_int32_to_float_fmul_scalar_sse2;
 148         c->int32_to_float_fmul_array8 = ff_int32_to_float_fmul_array8_sse2;
 149         c->float_to_int16             = ff_float_to_int16_sse2;
 150         c->float_to_int16_interleave  = float_to_int16_interleave_sse2;
 151     }
 152 #endif /* HAVE_YASM */
 153 }