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ffmpeg-4.2.2/tests/refcmp-metadata.awk 1.75 KB
aac5773f   hucm   功能基本完成,接口待打磨
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  # Compare metadata filter output containing float value strings to reference
  # output data. Returns the whole reference data if delta of each value is below
  # threshold, else returns the whole input data.
  
  function abs(val) {
      return ((val < 0.0) ? -val : val);
  }
  
  function max(val1, val2) {
      return ((val1 >= val2) ? val1 : val2);
  }
  
  function is_numeric_str(str) {
      return (str ~ /^[+-]?[0-9]*\.?[0-9]+$/);
  }
  
  BEGIN {
      FS = "=";
      # check for "fuzz" (threshold) program parameter, else use default
      if (fuzz <= 0.0) {
          fuzz = 0.1;
      }
      # check for "ref" (reference file) program parameter
      if (ref) {
          ref_nr = 0;
          while ((getline line < ref) > 0) {
              ref_nr++;
              ref_lines[ref_nr] = line;
              if (split(line, fields) == 2 && is_numeric_str(fields[2])) {
                  ref_keys[ref_nr] = fields[1];
                  ref_vals[ref_nr] = fields[2] + 0;  # convert to number
              }
          }
          close(ref);
      }
      delta_max = 0;
      result = (ref ? 1 : 0);
  }
  
  {
      cmp_lines[NR] = $0;
      if (NF == 2 && is_numeric_str($2) && ref_vals[NR]) {
          val = $2 + 0;  # convert to number
          delta = abs((val / ref_vals[NR]) - 1);
          delta_max = max(delta_max, delta);
          result = result && ($1 == ref_keys[NR]) && (delta <= fuzz);
      } else {
          result = result && ($0 == ref_lines[NR]);
      }
  }
  
  END {
      if (result) {
          for (i = 1; i <= ref_nr; i++)
              print ref_lines[i];
      } else {
          for (i = 1; i <= NR; i++)
              print cmp_lines[i];
          if (NR != ref_nr)
              print "[refcmp] lines: " NR " != " ref_nr > "/dev/stderr";
          if (delta_max >= fuzz)
              print "[refcmp] delta_max: " delta_max " >= " fuzz > "/dev/stderr";
      }
  }