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ffmpeg-4.2.2/libavutil/ppc/float_dsp_init.c 1.85 KB
aac5773f   hucm   功能基本完成,接口待打磨
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  /*
   * Copyright (c) 2006 Luca Barbato <lu_zero@gentoo.org>
   *
   * 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/float_dsp.h"
  #include "libavutil/ppc/cpu.h"
  #include "float_dsp_altivec.h"
  #include "float_dsp_vsx.h"
  
  av_cold void ff_float_dsp_init_ppc(AVFloatDSPContext *fdsp, int bit_exact)
  {
      if (PPC_ALTIVEC(av_get_cpu_flags())) {
          fdsp->vector_fmul = ff_vector_fmul_altivec;
          fdsp->vector_fmul_add = ff_vector_fmul_add_altivec;
          fdsp->vector_fmul_reverse = ff_vector_fmul_reverse_altivec;
  
          if (!bit_exact) {
              fdsp->vector_fmul_window = ff_vector_fmul_window_altivec;
          }
      }
  
      // The disabled function below are near identical to altivec and have
      // been disabled to reduce code duplication
      if (PPC_VSX(av_get_cpu_flags())) {
  //         fdsp->vector_fmul = ff_vector_fmul_vsx;
          fdsp->vector_fmul_add = ff_vector_fmul_add_vsx;
  //         fdsp->vector_fmul_reverse = ff_vector_fmul_reverse_vsx;
  
  //         if (!bit_exact) {
  //             fdsp->vector_fmul_window = ff_vector_fmul_window_vsx;
  //         }
      }
  }