text: /*
   *
   * 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 "libavfilter/convolution.h"
  
  void ff_filter_3x3_sse4(uint8_t *dst, int width,
                          float rdiv, float bias, const int *const matrix,
                          const uint8_t *c[], int peak, int radius,
                          int dstride, int stride, int size);
  
  av_cold void ff_convolution_init_x86(ConvolutionContext *s)
  {
  #if ARCH_X86_64
      int i;
      int cpu_flags = av_get_cpu_flags();
      for (i = 0; i < 4; i++) {
          if (s->mode[i] == MATRIX_SQUARE) {
              if (s->matrix_length[i] == 9 && s->depth == 8) {
                  if (EXTERNAL_SSE4(cpu_flags))
                      s->filter[i] = ff_filter_3x3_sse4;
              }
          }
      }
  #endif
  }
  