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ffmpeg-4.2.2/libavcodec/x86/dcadsp_init.c 1.97 KB
aac5773f   hucm   功能基本完成,接口待打磨
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  /*
   * 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/cpu.h"
  #include "libavutil/x86/cpu.h"
  #include "libavcodec/dcadsp.h"
  
  #define LFE_FIR_FLOAT_FUNC(opt)                                               \
  void ff_lfe_fir0_float_##opt(float *pcm_samples, int32_t *lfe_samples,         \
                               const float *filter_coeff, ptrdiff_t npcmblocks); \
  void ff_lfe_fir1_float_##opt(float *pcm_samples, int32_t *lfe_samples,         \
                               const float *filter_coeff, ptrdiff_t npcmblocks);
  
  LFE_FIR_FLOAT_FUNC(sse)
  LFE_FIR_FLOAT_FUNC(sse2)
  LFE_FIR_FLOAT_FUNC(sse3)
  LFE_FIR_FLOAT_FUNC(avx)
  LFE_FIR_FLOAT_FUNC(fma3)
  
  av_cold void ff_dcadsp_init_x86(DCADSPContext *s)
  {
      int cpu_flags = av_get_cpu_flags();
  
      if (ARCH_X86_32 && EXTERNAL_SSE(cpu_flags))
          s->lfe_fir_float[0] = ff_lfe_fir0_float_sse;
      if (EXTERNAL_SSE2(cpu_flags))
          s->lfe_fir_float[0] = ff_lfe_fir0_float_sse2;
      if (EXTERNAL_SSE3(cpu_flags))
          s->lfe_fir_float[1] = ff_lfe_fir1_float_sse3;
      if (EXTERNAL_AVX(cpu_flags)) {
          s->lfe_fir_float[0] = ff_lfe_fir0_float_avx;
          s->lfe_fir_float[1] = ff_lfe_fir1_float_avx;
      }
      if (EXTERNAL_FMA3(cpu_flags))
          s->lfe_fir_float[0] = ff_lfe_fir0_float_fma3;
  }