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ffmpeg-4.2.2/libavutil/arm/float_dsp_init_vfp.c 1.75 KB
aac5773f   hucm   功能基本完成,接口待打磨
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  /*
   * Copyright (c) 2008 Siarhei Siamashka <ssvb@users.sourceforge.net>
   *
   * 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 "libavutil/attributes.h"
  #include "libavutil/float_dsp.h"
  #include "cpu.h"
  #include "float_dsp_arm.h"
  
  void ff_vector_fmul_vfp(float *dst, const float *src0, const float *src1,
                          int len);
  
  void ff_vector_fmul_window_vfp(float *dst, const float *src0,
                                 const float *src1, const float *win, int len);
  
  void ff_vector_fmul_reverse_vfp(float *dst, const float *src0,
                                  const float *src1, int len);
  
  void ff_butterflies_float_vfp(float *av_restrict v1, float *av_restrict v2, int len);
  
  av_cold void ff_float_dsp_init_vfp(AVFloatDSPContext *fdsp, int cpu_flags)
  {
      if (have_vfp_vm(cpu_flags)) {
          fdsp->vector_fmul = ff_vector_fmul_vfp;
          fdsp->vector_fmul_window = ff_vector_fmul_window_vfp;
      }
      fdsp->vector_fmul_reverse = ff_vector_fmul_reverse_vfp;
      if (have_vfp_vm(cpu_flags))
          fdsp->butterflies_float = ff_butterflies_float_vfp;
  }