4097   size_t linebytes = (w * bpp + 7) / 8;  in unfilter()  local
4101     size_t outindex = linebytes * y;  in unfilter()
4102     size_t inindex = (1 + linebytes) * y; /*the extra filterbyte added to each row*/  in unfilter()
4105 …RN(unfilterScanline(&out[outindex], &in[inindex + 1], prevline, bytewidth, filterType, linebytes));  in unfilter()
5242   size_t linebytes = (w * bpp + 7) / 8;  in filter()  local
5272       size_t outindex = (1 + linebytes) * y; /*the extra filterbyte added to each row*/  in filter()
5273       size_t inindex = linebytes * y;  in filter()
5275       filterScanline(&out[outindex + 1], &in[inindex], prevline, linebytes, bytewidth, 0);  in filter()
5290       if(!ucvector_resize(&attempt[type], linebytes)) return 83; /*alloc fail*/  in filter()
5300 …      filterScanline(attempt[type].data, &in[y * linebytes], prevline, linebytes, bytewidth, type);  in filter()
5306             for(x = 0; x < linebytes; x++) sum[type] += (unsigned char)(attempt[type].data[x]);  in filter()
5310             for(x = 0; x < linebytes; x++)  in filter()
5328         prevline = &in[y * linebytes];  in filter()
5331 …      out[y * (linebytes + 1)] = bestType; /*the first byte of a scanline will be the filter type*/  in filter()
5332         for(x = 0; x < linebytes; x++) out[y * (linebytes + 1) + 1 + x] = attempt[bestType].data[x];  in filter()
5349       if(!ucvector_resize(&attempt[type], linebytes)) return 83; /*alloc fail*/  in filter()
5357 …      filterScanline(attempt[type].data, &in[y * linebytes], prevline, linebytes, bytewidth, type);  in filter()
5359         for(x = 0; x < linebytes; x++) count[attempt[type].data[x]]++;  in filter()
5364           float p = count[x] / (float)(linebytes + 1);  in filter()
5375       prevline = &in[y * linebytes];  in filter()
5378       out[y * (linebytes + 1)] = bestType; /*the first byte of a scanline will be the filter type*/  in filter()
5379       for(x = 0; x < linebytes; x++) out[y * (linebytes + 1) + 1 + x] = attempt[bestType].data[x];  in filter()
5388       size_t outindex = (1 + linebytes) * y; /*the extra filterbyte added to each row*/  in filter()
5389       size_t inindex = linebytes * y;  in filter()
5392       filterScanline(&out[outindex + 1], &in[inindex], prevline, linebytes, bytewidth, type);  in filter()
5419       ucvector_resize(&attempt[type], linebytes); /*todo: give error if resize failed*/  in filter()
5428 …      filterScanline(attempt[type].data, &in[y * linebytes], prevline, linebytes, bytewidth, type);  in filter()
5440       prevline = &in[y * linebytes];  in filter()
5441       out[y * (linebytes + 1)] = bestType; /*the first byte of a scanline will be the filter type*/  in filter()
5442       for(x = 0; x < linebytes; x++) out[y * (linebytes + 1) + 1 + x] = attempt[bestType].data[x];  in filter()