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ffmpeg-4.2.2/tests/checkasm/vf_nlmeans.c 4.86 KB
aac5773f   hucm   功能基本完成,接口待打磨
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  /*
   * Copyright (c) 2018 Clément Bœsch <u pkh me>
   *
   * 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 "checkasm.h"
  #include "libavfilter/vf_nlmeans.h"
  #include "libavutil/avassert.h"
  
  #define randomize_buffer(buf, size) do {    \
      int i;                                  \
      for (i = 0; i < size / 4; i++)          \
          ((uint32_t *)buf)[i] = rnd();       \
  } while (0)
  
  void checkasm_check_nlmeans(void)
  {
      NLMeansDSPContext dsp = {0};
  
      const int w = 123;  // source width
      const int h = 45;   // source height
      const int p = 3;    // patch half size
      const int r = 2;    // research window half size
  
      ff_nlmeans_init(&dsp);
  
      /* See the filter's code for the explanations on the variables */
      if (check_func(dsp.compute_safe_ssd_integral_image, "ssd_integral_image")) {
          int offx, offy;
          const int e = p + r;
          const int ii_w = w + e*2;
          const int ii_h = h + e*2;
          const int ii_lz_32 = FFALIGN(ii_w + 1, 4);
          uint32_t *ii_orig_ref = av_mallocz_array(ii_h + 1, ii_lz_32 * sizeof(*ii_orig_ref));
          uint32_t *ii_ref = ii_orig_ref + ii_lz_32 + 1;
          uint32_t *ii_orig_new = av_mallocz_array(ii_h + 1, ii_lz_32 * sizeof(*ii_orig_new));
          uint32_t *ii_new = ii_orig_new + ii_lz_32 + 1;
          const int src_lz = FFALIGN(w, 16);
          uint8_t *src = av_mallocz_array(h, src_lz);
  
          declare_func(void, uint32_t *dst, ptrdiff_t dst_linesize_32,
                       const uint8_t *s1, ptrdiff_t linesize1,
                       const uint8_t *s2, ptrdiff_t linesize2,
                       int w, int h);
  
          randomize_buffer(src, h * src_lz);
  
          for (offy = -r; offy <= r; offy++) {
              for (offx = -r; offx <= r; offx++) {
                  if (offx || offy) {
                      const int s1x = e;
                      const int s1y = e;
                      const int s2x = e + offx;
                      const int s2y = e + offy;
                      const int startx_safe = FFMAX(s1x, s2x);
                      const int starty_safe = FFMAX(s1y, s2y);
                      const int u_endx_safe = FFMIN(s1x + w, s2x + w);
                      const int endy_safe   = FFMIN(s1y + h, s2y + h);
                      const int safe_pw = (u_endx_safe - startx_safe) & ~0xf;
                      const int safe_ph = endy_safe - starty_safe;
  
                      av_assert0(safe_pw && safe_ph);
                      av_assert0(startx_safe - s1x >= 0); av_assert0(startx_safe - s1x < w);
                      av_assert0(starty_safe - s1y >= 0); av_assert0(starty_safe - s1y < h);
                      av_assert0(startx_safe - s2x >= 0); av_assert0(startx_safe - s2x < w);
                      av_assert0(starty_safe - s2y >= 0); av_assert0(starty_safe - s2y < h);
  
                      memset(ii_ref, 0, (ii_lz_32 * ii_h - 1) * sizeof(*ii_ref));
                      memset(ii_new, 0, (ii_lz_32 * ii_h - 1) * sizeof(*ii_new));
  
                      call_ref(ii_ref + starty_safe*ii_lz_32 + startx_safe, ii_lz_32,
                               src + (starty_safe - s1y) * src_lz + (startx_safe - s1x), src_lz,
                               src + (starty_safe - s2y) * src_lz + (startx_safe - s2x), src_lz,
                               safe_pw, safe_ph);
                      call_new(ii_new + starty_safe*ii_lz_32 + startx_safe, ii_lz_32,
                               src + (starty_safe - s1y) * src_lz + (startx_safe - s1x), src_lz,
                               src + (starty_safe - s2y) * src_lz + (startx_safe - s2x), src_lz,
                               safe_pw, safe_ph);
  
                      if (memcmp(ii_ref, ii_new, (ii_lz_32 * ii_h - 1) * sizeof(*ii_ref)))
                          fail();
  
                      memset(ii_new, 0, (ii_lz_32 * ii_h - 1) * sizeof(*ii_new));
                      bench_new(ii_new + starty_safe*ii_lz_32 + startx_safe, ii_lz_32,
                               src + (starty_safe - s1y) * src_lz + (startx_safe - s1x), src_lz,
                               src + (starty_safe - s2y) * src_lz + (startx_safe - s2x), src_lz,
                               safe_pw, safe_ph);
                  }
              }
          }
  
          av_freep(&ii_orig_ref);
          av_freep(&ii_orig_new);
          av_freep(&src);
      }
  
      report("dsp");
  }