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  1. /*
  2.  * Copyright (C) 2006 Loren Merritt <lorenm@u.washington.edu>
  3.  *
  4.  * This file is part of FFmpeg.
  5.  *
  6.  * FFmpeg is free software; you can redistribute it and/or
  7.  * modify it under the terms of the GNU Lesser General Public
  8.  * License as published by the Free Software Foundation; either
  9.  * version 2.1 of the License, or (at your option) any later version.
  10.  *
  11.  * FFmpeg is distributed in the hope that it will be useful,
  12.  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14.  * Lesser General Public License for more details.
  15.  *
  16.  * You should have received a copy of the GNU Lesser General Public
  17.  * License along with FFmpeg; if not, write to the Free Software
  18.  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  19.  */
  20.  
  21. #include "config.h"
  22. #include "libavutil/attributes.h"
  23. #include "libavutil/cpu.h"
  24. #include "libavutil/x86/cpu.h"
  25. #include "libavcodec/vorbisdsp.h"
  26.  
  27. void ff_vorbis_inverse_coupling_3dnow(float *mag, float *ang,
  28.                                       intptr_t blocksize);
  29. void ff_vorbis_inverse_coupling_sse(float *mag, float *ang,
  30.                                     intptr_t blocksize);
  31.  
  32. av_cold void ff_vorbisdsp_init_x86(VorbisDSPContext *dsp)
  33. {
  34. #if HAVE_YASM
  35.     int cpu_flags = av_get_cpu_flags();
  36.  
  37. #if ARCH_X86_32
  38.     if (EXTERNAL_AMD3DNOW(cpu_flags))
  39.         dsp->vorbis_inverse_coupling = ff_vorbis_inverse_coupling_3dnow;
  40. #endif /* ARCH_X86_32 */
  41.     if (EXTERNAL_SSE(cpu_flags))
  42.         dsp->vorbis_inverse_coupling = ff_vorbis_inverse_coupling_sse;
  43. #endif /* HAVE_YASM */
  44. }
  45.