1918 INT byte_width;  in _gx_image_reader_png_unfilter()  local
1930     byte_width = (png -> gx_png_width * bpp + 7) >> 3;  in _gx_image_reader_png_unfilter()
1935         filter_type = png -> gx_png_decoded_data[y * byte_width + y];  in _gx_image_reader_png_unfilter()
1937         pos = y * byte_width;  in _gx_image_reader_png_unfilter()
1938 …move(png -> gx_png_decoded_data + pos, png -> gx_png_decoded_data + pos + y + 1, (UINT)byte_width);  in _gx_image_reader_png_unfilter()
1946             for (x = bpp; x < byte_width; x++)  in _gx_image_reader_png_unfilter()
1958             for (x = 0; x < byte_width; x++)  in _gx_image_reader_png_unfilter()
1960 …(GX_UBYTE)(png -> gx_png_decoded_data[pos + x] + png -> gx_png_decoded_data[pos + x - byte_width]);  in _gx_image_reader_png_unfilter()
1967                 for (x = bpp; x < byte_width; x++)  in _gx_image_reader_png_unfilter()
1976 …TE)(png -> gx_png_decoded_data[pos + x] + (png -> gx_png_decoded_data[pos + x - byte_width] >> 1));  in _gx_image_reader_png_unfilter()
1979                 for (x = bpp; x < byte_width; x++)  in _gx_image_reader_png_unfilter()
1982 …                                          png -> gx_png_decoded_data[pos + x - byte_width]) >> 1));  in _gx_image_reader_png_unfilter()
1990                 for (x = bpp; x < byte_width; x++)  in _gx_image_reader_png_unfilter()
1999 …(GX_UBYTE)(png -> gx_png_decoded_data[pos + x] + png -> gx_png_decoded_data[pos + x - byte_width]);  in _gx_image_reader_png_unfilter()
2002                 for (x = bpp; x < byte_width; x++)  in _gx_image_reader_png_unfilter()
2005 …                                                  png -> gx_png_decoded_data[pos + x - byte_width],  in _gx_image_reader_png_unfilter()
2006 …                                          png -> gx_png_decoded_data[pos + x - byte_width - bpp]));  in _gx_image_reader_png_unfilter()