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ffmpeg-4.2.2/libavcodec/x86/vorbisdsp_init.c 1.54 KB
aac5773f   hucm   功能基本完成,接口待打磨
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  /*
   * Copyright (C) 2006 Loren Merritt <lorenm@u.washington.edu>
   *
   * 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 "config.h"
  #include "libavutil/attributes.h"
  #include "libavutil/cpu.h"
  #include "libavutil/x86/cpu.h"
  #include "libavcodec/vorbisdsp.h"
  
  void ff_vorbis_inverse_coupling_3dnow(float *mag, float *ang,
                                        intptr_t blocksize);
  void ff_vorbis_inverse_coupling_sse(float *mag, float *ang,
                                      intptr_t blocksize);
  
  av_cold void ff_vorbisdsp_init_x86(VorbisDSPContext *dsp)
  {
      int cpu_flags = av_get_cpu_flags();
  
  #if ARCH_X86_32
      if (EXTERNAL_AMD3DNOW(cpu_flags))
          dsp->vorbis_inverse_coupling = ff_vorbis_inverse_coupling_3dnow;
  #endif /* ARCH_X86_32 */
      if (EXTERNAL_SSE(cpu_flags))
          dsp->vorbis_inverse_coupling = ff_vorbis_inverse_coupling_sse;
  }