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  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. #endif /* HAVE_YASM */
  41.  
  42. av_cold void ff_fmt_convert_init_x86(FmtConvertContext *c, AVCodecContext *avctx)
  43. {
  44. #if HAVE_YASM
  45.     int cpu_flags = av_get_cpu_flags();
  46.  
  47.     if (EXTERNAL_SSE(cpu_flags)) {
  48.         c->int32_to_float_fmul_scalar = ff_int32_to_float_fmul_scalar_sse;
  49.         c->int32_to_float_fmul_array8 = ff_int32_to_float_fmul_array8_sse;
  50.     }
  51.     if (EXTERNAL_SSE2(cpu_flags)) {
  52.         c->int32_to_float_fmul_scalar = ff_int32_to_float_fmul_scalar_sse2;
  53.         c->int32_to_float_fmul_array8 = ff_int32_to_float_fmul_array8_sse2;
  54.     }
  55. #endif /* HAVE_YASM */
  56. }
  57.