XoopsModules25x / apcal

                                    // encoded mode - the first byte specifies the number of consecutive pixels

                                    // to be drawn using the color index contained in the second byte.

                                    for ($i = 0; $i < $firstbyte; $i++) {

                                        $col                              = $pixelcounter % $thisfile_bmp_header_raw['width'];

                                        $row                              = $thisfile_bmp_header_raw['height'] - 1 - (($pixelcounter - $col) / $thisfile_bmp_header_raw['width']);

                                        $thisfile_bmp['data'][$row][$col] = $thisfile_bmp['palette'][$secondbyte];

                                        $pixelcounter++;

                                    }

                                }

                            }

                            break;

                                    // pixels specified by the first byte have been drawn.

                                    $paletteindexes[0] = ($secondbyte & 0xF0) >> 4;

                                    $paletteindexes[1] = ($secondbyte & 0x0F);

                                    for ($i = 0; $i < $firstbyte; $i++) {

                                        $col                              = $pixelcounter % $thisfile_bmp_header_raw['width'];

                                        $row                              = $thisfile_bmp_header_raw['height'] - 1 - (($pixelcounter - $col) / $thisfile_bmp_header_raw['width']);

                                        $thisfile_bmp['data'][$row][$col] = $thisfile_bmp['palette'][$paletteindexes[$i % 2]];

                                        $pixelcounter++;

                                    }

                                }

                            }

                            break;