mambax7 /
XoopsCore25
| Total Complexity | 131 |
| Total Lines | 847 |
| Duplicated Lines | 0 % |
| Changes | 0 | ||
Complex classes like phpthumb_bmp often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use phpthumb_bmp, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 21 | class phpthumb_bmp { |
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| 22 | |||
| 23 | public function phpthumb_bmp2gd(&$BMPdata, $truecolor=true) { |
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| 30 | } |
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| 31 | |||
| 32 | public function phpthumb_bmpfile2gd($filename, $truecolor=true) { |
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| 33 | if ($fp = @fopen($filename, 'rb')) { |
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| 34 | $BMPdata = fread($fp, filesize($filename)); |
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| 35 | fclose($fp); |
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| 36 | return $this->phpthumb_bmp2gd($BMPdata, $truecolor); |
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| 37 | } |
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| 38 | return false; |
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| 39 | } |
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| 40 | |||
| 41 | public function GD2BMPstring(&$gd_image) { |
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| 42 | $imageX = imagesx($gd_image); |
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| 43 | $imageY = imagesy($gd_image); |
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| 44 | |||
| 45 | $BMP = ''; |
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| 46 | for ($y = ($imageY - 1); $y >= 0; $y--) { |
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| 47 | $thisline = ''; |
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| 48 | for ($x = 0; $x < $imageX; $x++) { |
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| 49 | $argb = phpthumb_functions::GetPixelColor($gd_image, $x, $y); |
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| 50 | $thisline .= chr($argb['blue']).chr($argb['green']).chr($argb['red']); |
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| 51 | } |
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| 52 | while (strlen($thisline) % 4) { |
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| 53 | $thisline .= "\x00"; |
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| 54 | } |
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| 55 | $BMP .= $thisline; |
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| 56 | } |
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| 57 | |||
| 58 | $bmpSize = strlen($BMP) + 14 + 40; |
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| 59 | // BITMAPFILEHEADER [14 bytes] - http://msdn.microsoft.com/library/en-us/gdi/bitmaps_62uq.asp |
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| 60 | $BITMAPFILEHEADER = 'BM'; // WORD bfType; |
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| 61 | $BITMAPFILEHEADER .= phpthumb_functions::LittleEndian2String($bmpSize, 4); // DWORD bfSize; |
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| 62 | $BITMAPFILEHEADER .= phpthumb_functions::LittleEndian2String( 0, 2); // WORD bfReserved1; |
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| 63 | $BITMAPFILEHEADER .= phpthumb_functions::LittleEndian2String( 0, 2); // WORD bfReserved2; |
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| 64 | $BITMAPFILEHEADER .= phpthumb_functions::LittleEndian2String( 54, 4); // DWORD bfOffBits; |
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| 65 | |||
| 66 | // BITMAPINFOHEADER - [40 bytes] http://msdn.microsoft.com/library/en-us/gdi/bitmaps_1rw2.asp |
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| 67 | $BITMAPINFOHEADER = phpthumb_functions::LittleEndian2String( 40, 4); // DWORD biSize; |
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| 68 | $BITMAPINFOHEADER .= phpthumb_functions::LittleEndian2String( $imageX, 4); // LONG biWidth; |
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| 69 | $BITMAPINFOHEADER .= phpthumb_functions::LittleEndian2String( $imageY, 4); // LONG biHeight; |
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| 70 | $BITMAPINFOHEADER .= phpthumb_functions::LittleEndian2String( 1, 2); // WORD biPlanes; |
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| 71 | $BITMAPINFOHEADER .= phpthumb_functions::LittleEndian2String( 24, 2); // WORD biBitCount; |
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| 72 | $BITMAPINFOHEADER .= phpthumb_functions::LittleEndian2String( 0, 4); // DWORD biCompression; |
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| 73 | $BITMAPINFOHEADER .= phpthumb_functions::LittleEndian2String( 0, 4); // DWORD biSizeImage; |
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| 74 | $BITMAPINFOHEADER .= phpthumb_functions::LittleEndian2String( 2835, 4); // LONG biXPelsPerMeter; |
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| 75 | $BITMAPINFOHEADER .= phpthumb_functions::LittleEndian2String( 2835, 4); // LONG biYPelsPerMeter; |
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| 76 | $BITMAPINFOHEADER .= phpthumb_functions::LittleEndian2String( 0, 4); // DWORD biClrUsed; |
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| 77 | $BITMAPINFOHEADER .= phpthumb_functions::LittleEndian2String( 0, 4); // DWORD biClrImportant; |
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| 78 | |||
| 79 | return $BITMAPFILEHEADER.$BITMAPINFOHEADER.$BMP; |
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| 80 | } |
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| 81 | |||
| 82 | public function getid3_bmp(&$BMPdata, &$ThisFileInfo, $ExtractPalette=false, $ExtractData=false) { |
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| 83 | |||
| 84 | // shortcuts |
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| 85 | $ThisFileInfo['bmp']['header']['raw'] = array(); |
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| 86 | $thisfile_bmp = &$ThisFileInfo['bmp']; |
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| 87 | $thisfile_bmp_header = &$thisfile_bmp['header']; |
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| 88 | $thisfile_bmp_header_raw = &$thisfile_bmp_header['raw']; |
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| 89 | |||
| 90 | // BITMAPFILEHEADER [14 bytes] - http://msdn.microsoft.com/library/en-us/gdi/bitmaps_62uq.asp |
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| 91 | // all versions |
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| 92 | // WORD bfType; |
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| 93 | // DWORD bfSize; |
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| 94 | // WORD bfReserved1; |
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| 95 | // WORD bfReserved2; |
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| 96 | // DWORD bfOffBits; |
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| 97 | |||
| 98 | $offset = 0; |
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| 99 | $overalloffset = 0; |
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| 100 | $BMPheader = substr($BMPdata, $overalloffset, 14 + 40); |
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| 101 | $overalloffset += (14 + 40); |
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| 102 | |||
| 103 | $thisfile_bmp_header_raw['identifier'] = substr($BMPheader, $offset, 2); |
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| 104 | $offset += 2; |
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| 105 | |||
| 106 | if ($thisfile_bmp_header_raw['identifier'] != 'BM') { |
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| 107 | $ThisFileInfo['error'][] = 'Expecting "BM" at offset '. (int) (@$ThisFileInfo[ 'avdataoffset']) .', found "'. $thisfile_bmp_header_raw[ 'identifier'].'"'; |
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| 108 | unset($ThisFileInfo['fileformat']); |
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| 109 | unset($ThisFileInfo['bmp']); |
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| 110 | return false; |
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| 111 | } |
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| 112 | |||
| 113 | $thisfile_bmp_header_raw['filesize'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4)); |
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| 114 | $offset += 4; |
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| 115 | $thisfile_bmp_header_raw['reserved1'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 2)); |
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| 116 | $offset += 2; |
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| 117 | $thisfile_bmp_header_raw['reserved2'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 2)); |
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| 118 | $offset += 2; |
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| 119 | $thisfile_bmp_header_raw['data_offset'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4)); |
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| 120 | $offset += 4; |
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| 121 | $thisfile_bmp_header_raw['header_size'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4)); |
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| 122 | $offset += 4; |
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| 123 | |||
| 124 | |||
| 125 | // check if the hardcoded-to-1 "planes" is at offset 22 or 26 |
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| 126 | $planes22 = $this->LittleEndian2Int(substr($BMPheader, 22, 2)); |
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| 127 | $planes26 = $this->LittleEndian2Int(substr($BMPheader, 26, 2)); |
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| 128 | if (($planes22 == 1) && ($planes26 != 1)) { |
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| 129 | $thisfile_bmp['type_os'] = 'OS/2'; |
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| 130 | $thisfile_bmp['type_version'] = 1; |
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| 131 | } elseif (($planes26 == 1) && ($planes22 != 1)) { |
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| 132 | $thisfile_bmp['type_os'] = 'Windows'; |
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| 133 | $thisfile_bmp['type_version'] = 1; |
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| 134 | } elseif ($thisfile_bmp_header_raw['header_size'] == 12) { |
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| 135 | $thisfile_bmp['type_os'] = 'OS/2'; |
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| 136 | $thisfile_bmp['type_version'] = 1; |
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| 137 | } elseif ($thisfile_bmp_header_raw['header_size'] == 40) { |
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| 138 | $thisfile_bmp['type_os'] = 'Windows'; |
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| 139 | $thisfile_bmp['type_version'] = 1; |
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| 140 | } elseif ($thisfile_bmp_header_raw['header_size'] == 84) { |
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| 141 | $thisfile_bmp['type_os'] = 'Windows'; |
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| 142 | $thisfile_bmp['type_version'] = 4; |
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| 143 | } elseif ($thisfile_bmp_header_raw['header_size'] == 100) { |
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| 144 | $thisfile_bmp['type_os'] = 'Windows'; |
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| 145 | $thisfile_bmp['type_version'] = 5; |
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| 146 | } else { |
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| 147 | $ThisFileInfo['error'][] = 'Unknown BMP subtype (or not a BMP file)'; |
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| 148 | unset($ThisFileInfo['fileformat']); |
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| 149 | unset($ThisFileInfo['bmp']); |
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| 150 | return false; |
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| 151 | } |
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| 152 | |||
| 153 | $ThisFileInfo['fileformat'] = 'bmp'; |
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| 154 | $ThisFileInfo['video']['dataformat'] = 'bmp'; |
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| 155 | $ThisFileInfo['video']['lossless'] = true; |
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| 156 | $ThisFileInfo['video']['pixel_aspect_ratio'] = (float) 1; |
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| 157 | |||
| 158 | if ($thisfile_bmp['type_os'] == 'OS/2') { |
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| 159 | |||
| 160 | // OS/2-format BMP |
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| 161 | // http://netghost.narod.ru/gff/graphics/summary/os2bmp.htm |
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| 162 | |||
| 163 | // DWORD Size; /* Size of this structure in bytes */ |
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| 164 | // DWORD Width; /* Bitmap width in pixels */ |
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| 165 | // DWORD Height; /* Bitmap height in pixel */ |
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| 166 | // WORD NumPlanes; /* Number of bit planes (color depth) */ |
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| 167 | // WORD BitsPerPixel; /* Number of bits per pixel per plane */ |
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| 168 | |||
| 169 | $thisfile_bmp_header_raw['width'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 2)); |
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| 170 | $offset += 2; |
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| 171 | $thisfile_bmp_header_raw['height'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 2)); |
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| 172 | $offset += 2; |
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| 173 | $thisfile_bmp_header_raw['planes'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 2)); |
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| 174 | $offset += 2; |
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| 175 | $thisfile_bmp_header_raw['bits_per_pixel'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 2)); |
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| 176 | $offset += 2; |
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| 177 | |||
| 178 | $ThisFileInfo['video']['resolution_x'] = $thisfile_bmp_header_raw['width']; |
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| 179 | $ThisFileInfo['video']['resolution_y'] = $thisfile_bmp_header_raw['height']; |
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| 180 | $ThisFileInfo['video']['codec'] = 'BI_RGB '.$thisfile_bmp_header_raw['bits_per_pixel'].'-bit'; |
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| 181 | $ThisFileInfo['video']['bits_per_sample'] = $thisfile_bmp_header_raw['bits_per_pixel']; |
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| 182 | |||
| 183 | if ($thisfile_bmp['type_version'] >= 2) { |
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| 184 | // DWORD Compression; /* Bitmap compression scheme */ |
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| 185 | // DWORD ImageDataSize; /* Size of bitmap data in bytes */ |
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| 186 | // DWORD XResolution; /* X resolution of display device */ |
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| 187 | // DWORD YResolution; /* Y resolution of display device */ |
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| 188 | // DWORD ColorsUsed; /* Number of color table indices used */ |
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| 189 | // DWORD ColorsImportant; /* Number of important color indices */ |
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| 190 | // WORD Units; /* Type of units used to measure resolution */ |
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| 191 | // WORD Reserved; /* Pad structure to 4-byte boundary */ |
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| 192 | // WORD Recording; /* Recording algorithm */ |
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| 193 | // WORD Rendering; /* Halftoning algorithm used */ |
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| 194 | // DWORD Size1; /* Reserved for halftoning algorithm use */ |
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| 195 | // DWORD Size2; /* Reserved for halftoning algorithm use */ |
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| 196 | // DWORD ColorEncoding; /* Color model used in bitmap */ |
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| 197 | // DWORD Identifier; /* Reserved for application use */ |
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| 198 | |||
| 199 | $thisfile_bmp_header_raw['compression'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4)); |
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| 200 | $offset += 4; |
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| 201 | $thisfile_bmp_header_raw['bmp_data_size'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4)); |
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| 202 | $offset += 4; |
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| 203 | $thisfile_bmp_header_raw['resolution_h'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4)); |
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| 204 | $offset += 4; |
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| 205 | $thisfile_bmp_header_raw['resolution_v'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4)); |
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| 206 | $offset += 4; |
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| 207 | $thisfile_bmp_header_raw['colors_used'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4)); |
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| 208 | $offset += 4; |
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| 209 | $thisfile_bmp_header_raw['colors_important'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4)); |
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| 210 | $offset += 4; |
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| 211 | $thisfile_bmp_header_raw['resolution_units'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 2)); |
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| 212 | $offset += 2; |
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| 213 | $thisfile_bmp_header_raw['reserved1'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 2)); |
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| 214 | $offset += 2; |
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| 215 | $thisfile_bmp_header_raw['recording'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 2)); |
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| 216 | $offset += 2; |
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| 217 | $thisfile_bmp_header_raw['rendering'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 2)); |
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| 218 | $offset += 2; |
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| 219 | $thisfile_bmp_header_raw['size1'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4)); |
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| 220 | $offset += 4; |
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| 221 | $thisfile_bmp_header_raw['size2'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4)); |
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| 222 | $offset += 4; |
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| 223 | $thisfile_bmp_header_raw['color_encoding'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4)); |
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| 224 | $offset += 4; |
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| 225 | $thisfile_bmp_header_raw['identifier'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4)); |
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| 226 | $offset += 4; |
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| 227 | |||
| 228 | $thisfile_bmp_header['compression'] = $this->BMPcompressionOS2Lookup($thisfile_bmp_header_raw['compression']); |
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| 229 | |||
| 230 | $ThisFileInfo['video']['codec'] = $thisfile_bmp_header['compression'].' '.$thisfile_bmp_header_raw['bits_per_pixel'].'-bit'; |
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| 231 | } |
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| 232 | |||
| 233 | } elseif ($thisfile_bmp['type_os'] == 'Windows') { |
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| 234 | |||
| 235 | // Windows-format BMP |
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| 236 | |||
| 237 | // BITMAPINFOHEADER - [40 bytes] http://msdn.microsoft.com/library/en-us/gdi/bitmaps_1rw2.asp |
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| 238 | // all versions |
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| 239 | // DWORD biSize; |
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| 240 | // LONG biWidth; |
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| 241 | // LONG biHeight; |
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| 242 | // WORD biPlanes; |
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| 243 | // WORD biBitCount; |
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| 244 | // DWORD biCompression; |
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| 245 | // DWORD biSizeImage; |
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| 246 | // LONG biXPelsPerMeter; |
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| 247 | // LONG biYPelsPerMeter; |
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| 248 | // DWORD biClrUsed; |
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| 249 | // DWORD biClrImportant; |
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| 250 | |||
| 251 | $thisfile_bmp_header_raw['width'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4)); |
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| 252 | $offset += 4; |
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| 253 | $thisfile_bmp_header_raw['height'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4)); |
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| 254 | $offset += 4; |
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| 255 | $thisfile_bmp_header_raw['planes'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 2)); |
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| 256 | $offset += 2; |
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| 257 | $thisfile_bmp_header_raw['bits_per_pixel'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 2)); |
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| 258 | $offset += 2; |
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| 259 | $thisfile_bmp_header_raw['compression'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4)); |
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| 260 | $offset += 4; |
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| 261 | $thisfile_bmp_header_raw['bmp_data_size'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4)); |
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| 262 | $offset += 4; |
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| 263 | $thisfile_bmp_header_raw['resolution_h'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4)); |
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| 264 | $offset += 4; |
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| 265 | $thisfile_bmp_header_raw['resolution_v'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4)); |
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| 266 | $offset += 4; |
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| 267 | $thisfile_bmp_header_raw['colors_used'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4)); |
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| 268 | $offset += 4; |
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| 269 | $thisfile_bmp_header_raw['colors_important'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4)); |
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| 270 | $offset += 4; |
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| 271 | |||
| 272 | $thisfile_bmp_header['compression'] = $this->BMPcompressionWindowsLookup($thisfile_bmp_header_raw['compression']); |
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| 273 | $ThisFileInfo['video']['resolution_x'] = $thisfile_bmp_header_raw['width']; |
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| 274 | $ThisFileInfo['video']['resolution_y'] = $thisfile_bmp_header_raw['height']; |
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| 275 | $ThisFileInfo['video']['codec'] = $thisfile_bmp_header['compression'].' '.$thisfile_bmp_header_raw['bits_per_pixel'].'-bit'; |
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| 276 | $ThisFileInfo['video']['bits_per_sample'] = $thisfile_bmp_header_raw['bits_per_pixel']; |
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| 277 | |||
| 278 | if (($thisfile_bmp['type_version'] >= 4) || ($thisfile_bmp_header_raw['compression'] == 3)) { |
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| 279 | // should only be v4+, but BMPs with type_version==1 and BI_BITFIELDS compression have been seen |
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| 280 | $BMPheader .= substr($BMPdata, $overalloffset, 44); |
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| 281 | $overalloffset += 44; |
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| 282 | |||
| 283 | // BITMAPV4HEADER - [44 bytes] - http://msdn.microsoft.com/library/en-us/gdi/bitmaps_2k1e.asp |
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| 284 | // Win95+, WinNT4.0+ |
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| 285 | // DWORD bV4RedMask; |
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| 286 | // DWORD bV4GreenMask; |
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| 287 | // DWORD bV4BlueMask; |
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| 288 | // DWORD bV4AlphaMask; |
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| 289 | // DWORD bV4CSType; |
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| 290 | // CIEXYZTRIPLE bV4Endpoints; |
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| 291 | // DWORD bV4GammaRed; |
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| 292 | // DWORD bV4GammaGreen; |
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| 293 | // DWORD bV4GammaBlue; |
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| 294 | $thisfile_bmp_header_raw['red_mask'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4)); |
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| 295 | $offset += 4; |
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| 296 | $thisfile_bmp_header_raw['green_mask'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4)); |
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| 297 | $offset += 4; |
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| 298 | $thisfile_bmp_header_raw['blue_mask'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4)); |
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| 299 | $offset += 4; |
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| 300 | $thisfile_bmp_header_raw['alpha_mask'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4)); |
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| 301 | $offset += 4; |
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| 302 | $thisfile_bmp_header_raw['cs_type'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4)); |
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| 303 | $offset += 4; |
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| 304 | $thisfile_bmp_header_raw['ciexyz_red'] = substr($BMPheader, $offset, 4); |
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| 305 | $offset += 4; |
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| 306 | $thisfile_bmp_header_raw['ciexyz_green'] = substr($BMPheader, $offset, 4); |
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| 307 | $offset += 4; |
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| 308 | $thisfile_bmp_header_raw['ciexyz_blue'] = substr($BMPheader, $offset, 4); |
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| 309 | $offset += 4; |
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| 310 | $thisfile_bmp_header_raw['gamma_red'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4)); |
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| 311 | $offset += 4; |
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| 312 | $thisfile_bmp_header_raw['gamma_green'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4)); |
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| 313 | $offset += 4; |
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| 314 | $thisfile_bmp_header_raw['gamma_blue'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4)); |
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| 315 | $offset += 4; |
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| 316 | |||
| 317 | $thisfile_bmp_header['ciexyz_red'] = $this->FixedPoint2_30(strrev($thisfile_bmp_header_raw['ciexyz_red'])); |
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| 318 | $thisfile_bmp_header['ciexyz_green'] = $this->FixedPoint2_30(strrev($thisfile_bmp_header_raw['ciexyz_green'])); |
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| 319 | $thisfile_bmp_header['ciexyz_blue'] = $this->FixedPoint2_30(strrev($thisfile_bmp_header_raw['ciexyz_blue'])); |
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| 320 | } |
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| 321 | |||
| 322 | if ($thisfile_bmp['type_version'] >= 5) { |
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| 323 | $BMPheader .= substr($BMPdata, $overalloffset, 16); |
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| 324 | $overalloffset += 16; |
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| 325 | |||
| 326 | // BITMAPV5HEADER - [16 bytes] - http://msdn.microsoft.com/library/en-us/gdi/bitmaps_7c36.asp |
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| 327 | // Win98+, Win2000+ |
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| 328 | // DWORD bV5Intent; |
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| 329 | // DWORD bV5ProfileData; |
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| 330 | // DWORD bV5ProfileSize; |
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| 331 | // DWORD bV5Reserved; |
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| 332 | $thisfile_bmp_header_raw['intent'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4)); |
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| 333 | $offset += 4; |
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| 334 | $thisfile_bmp_header_raw['profile_data_offset'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4)); |
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| 335 | $offset += 4; |
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| 336 | $thisfile_bmp_header_raw['profile_data_size'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4)); |
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| 337 | $offset += 4; |
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| 338 | $thisfile_bmp_header_raw['reserved3'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4)); |
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| 339 | $offset += 4; |
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| 340 | } |
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| 341 | |||
| 342 | } else { |
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| 343 | |||
| 344 | $ThisFileInfo['error'][] = 'Unknown BMP format in header.'; |
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| 345 | return false; |
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| 346 | |||
| 347 | } |
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| 348 | |||
| 349 | if ($ExtractPalette || $ExtractData) { |
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| 350 | $PaletteEntries = 0; |
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| 351 | if ($thisfile_bmp_header_raw['bits_per_pixel'] < 16) { |
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| 352 | $PaletteEntries = pow(2, $thisfile_bmp_header_raw['bits_per_pixel']); |
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| 353 | } elseif (isset($thisfile_bmp_header_raw['colors_used']) && ($thisfile_bmp_header_raw['colors_used'] > 0) && ($thisfile_bmp_header_raw['colors_used'] <= 256)) { |
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| 354 | $PaletteEntries = $thisfile_bmp_header_raw['colors_used']; |
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| 355 | } |
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| 356 | if ($PaletteEntries > 0) { |
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| 357 | $BMPpalette = substr($BMPdata, $overalloffset, 4 * $PaletteEntries); |
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| 358 | $overalloffset += 4 * $PaletteEntries; |
||
| 359 | |||
| 360 | $paletteoffset = 0; |
||
| 361 | for ($i = 0; $i < $PaletteEntries; $i++) { |
||
| 362 | // RGBQUAD - http://msdn.microsoft.com/library/en-us/gdi/bitmaps_5f8y.asp |
||
| 363 | // BYTE rgbBlue; |
||
| 364 | // BYTE rgbGreen; |
||
| 365 | // BYTE rgbRed; |
||
| 366 | // BYTE rgbReserved; |
||
| 367 | $blue = $this->LittleEndian2Int($BMPpalette[ $paletteoffset++ ]); |
||
| 368 | $green = $this->LittleEndian2Int($BMPpalette[ $paletteoffset++ ]); |
||
| 369 | $red = $this->LittleEndian2Int($BMPpalette[ $paletteoffset++ ]); |
||
| 370 | if (($thisfile_bmp['type_os'] == 'OS/2') && ($thisfile_bmp['type_version'] == 1)) { |
||
|
|
|||
| 371 | // no padding byte |
||
| 372 | } else { |
||
| 373 | $paletteoffset++; // padding byte |
||
| 374 | } |
||
| 375 | $thisfile_bmp['palette'][$i] = (($red << 16) | ($green << 8) | ($blue)); |
||
| 376 | } |
||
| 377 | } |
||
| 378 | } |
||
| 379 | |||
| 380 | if ($ExtractData) { |
||
| 381 | $RowByteLength = ceil(($thisfile_bmp_header_raw['width'] * ($thisfile_bmp_header_raw['bits_per_pixel'] / 8)) / 4) * 4; // round up to nearest DWORD boundary |
||
| 382 | |||
| 383 | $BMPpixelData = substr($BMPdata, $thisfile_bmp_header_raw['data_offset'], $thisfile_bmp_header_raw['height'] * $RowByteLength); |
||
| 384 | $overalloffset = $thisfile_bmp_header_raw['data_offset'] + ($thisfile_bmp_header_raw['height'] * $RowByteLength); |
||
| 385 | |||
| 386 | $pixeldataoffset = 0; |
||
| 387 | switch (@$thisfile_bmp_header_raw['compression']) { |
||
| 388 | |||
| 389 | case 0: // BI_RGB |
||
| 390 | switch ($thisfile_bmp_header_raw['bits_per_pixel']) { |
||
| 391 | case 1: |
||
| 392 | for ($row = ($thisfile_bmp_header_raw['height'] - 1); $row >= 0; $row--) { |
||
| 393 | for ($col = 0; $col < $thisfile_bmp_header_raw['width']; $col = $col) { |
||
| 394 | $paletteindexbyte = ord($BMPpixelData{$pixeldataoffset++}); |
||
| 395 | for ($i = 7; $i >= 0; $i--) { |
||
| 396 | $paletteindex = ($paletteindexbyte & (0x01 << $i)) >> $i; |
||
| 397 | $thisfile_bmp['data'][$row][$col] = $thisfile_bmp['palette'][$paletteindex]; |
||
| 398 | $col++; |
||
| 399 | } |
||
| 400 | } |
||
| 401 | while (($pixeldataoffset % 4) != 0) { |
||
| 402 | // lines are padded to nearest DWORD |
||
| 403 | $pixeldataoffset++; |
||
| 404 | } |
||
| 405 | } |
||
| 406 | break; |
||
| 407 | |||
| 408 | case 4: |
||
| 409 | for ($row = ($thisfile_bmp_header_raw['height'] - 1); $row >= 0; $row--) { |
||
| 410 | for ($col = 0; $col < $thisfile_bmp_header_raw['width']; $col = $col) { |
||
| 411 | $paletteindexbyte = ord($BMPpixelData{$pixeldataoffset++}); |
||
| 412 | for ($i = 1; $i >= 0; $i--) { |
||
| 413 | $paletteindex = ($paletteindexbyte & (0x0F << (4 * $i))) >> (4 * $i); |
||
| 414 | $thisfile_bmp['data'][$row][$col] = $thisfile_bmp['palette'][$paletteindex]; |
||
| 415 | $col++; |
||
| 416 | } |
||
| 417 | } |
||
| 418 | while (($pixeldataoffset % 4) != 0) { |
||
| 419 | // lines are padded to nearest DWORD |
||
| 420 | $pixeldataoffset++; |
||
| 421 | } |
||
| 422 | } |
||
| 423 | break; |
||
| 424 | |||
| 425 | case 8: |
||
| 426 | for ($row = ($thisfile_bmp_header_raw['height'] - 1); $row >= 0; $row--) { |
||
| 427 | for ($col = 0; $col < $thisfile_bmp_header_raw['width']; $col++) { |
||
| 428 | $paletteindex = ord($BMPpixelData{$pixeldataoffset++}); |
||
| 429 | $thisfile_bmp['data'][$row][$col] = $thisfile_bmp['palette'][$paletteindex]; |
||
| 430 | } |
||
| 431 | while (($pixeldataoffset % 4) != 0) { |
||
| 432 | // lines are padded to nearest DWORD |
||
| 433 | $pixeldataoffset++; |
||
| 434 | } |
||
| 435 | } |
||
| 436 | break; |
||
| 437 | |||
| 438 | case 24: |
||
| 439 | for ($row = ($thisfile_bmp_header_raw['height'] - 1); $row >= 0; $row--) { |
||
| 440 | for ($col = 0; $col < $thisfile_bmp_header_raw['width']; $col++) { |
||
| 441 | $thisfile_bmp['data'][$row][$col] = (ord($BMPpixelData{$pixeldataoffset+2}) << 16) | (ord($BMPpixelData{$pixeldataoffset+1}) << 8) | ord($BMPpixelData{$pixeldataoffset}); |
||
| 442 | $pixeldataoffset += 3; |
||
| 443 | } |
||
| 444 | while (($pixeldataoffset % 4) != 0) { |
||
| 445 | // lines are padded to nearest DWORD |
||
| 446 | $pixeldataoffset++; |
||
| 447 | } |
||
| 448 | } |
||
| 449 | break; |
||
| 450 | |||
| 451 | case 32: |
||
| 452 | for ($row = ($thisfile_bmp_header_raw['height'] - 1); $row >= 0; $row--) { |
||
| 453 | for ($col = 0; $col < $thisfile_bmp_header_raw['width']; $col++) { |
||
| 454 | $thisfile_bmp['data'][$row][$col] = (ord($BMPpixelData{$pixeldataoffset+3}) << 24) | (ord($BMPpixelData{$pixeldataoffset+2}) << 16) | (ord($BMPpixelData{$pixeldataoffset+1}) << 8) | ord($BMPpixelData{$pixeldataoffset}); |
||
| 455 | $pixeldataoffset += 4; |
||
| 456 | } |
||
| 457 | while (($pixeldataoffset % 4) != 0) { |
||
| 458 | // lines are padded to nearest DWORD |
||
| 459 | $pixeldataoffset++; |
||
| 460 | } |
||
| 461 | } |
||
| 462 | break; |
||
| 463 | |||
| 464 | case 16: |
||
| 465 | // ? |
||
| 466 | break; |
||
| 467 | |||
| 468 | default: |
||
| 469 | $ThisFileInfo['error'][] = 'Unknown bits-per-pixel value ('.$thisfile_bmp_header_raw['bits_per_pixel'].') - cannot read pixel data'; |
||
| 470 | break; |
||
| 471 | } |
||
| 472 | break; |
||
| 473 | |||
| 474 | |||
| 475 | case 1: // BI_RLE8 - http://msdn.microsoft.com/library/en-us/gdi/bitmaps_6x0u.asp |
||
| 476 | switch ($thisfile_bmp_header_raw['bits_per_pixel']) { |
||
| 477 | case 8: |
||
| 478 | $pixelcounter = 0; |
||
| 479 | while ($pixeldataoffset < strlen($BMPpixelData)) { |
||
| 480 | $firstbyte = $this->LittleEndian2Int($BMPpixelData[ $pixeldataoffset++ ]); |
||
| 481 | $secondbyte = $this->LittleEndian2Int($BMPpixelData[ $pixeldataoffset++ ]); |
||
| 482 | if ($firstbyte == 0) { |
||
| 483 | |||
| 484 | // escaped/absolute mode - the first byte of the pair can be set to zero to |
||
| 485 | // indicate an escape character that denotes the end of a line, the end of |
||
| 486 | // a bitmap, or a delta, depending on the value of the second byte. |
||
| 487 | switch ($secondbyte) { |
||
| 488 | case 0: |
||
| 489 | // end of line |
||
| 490 | // no need for special processing, just ignore |
||
| 491 | break; |
||
| 492 | |||
| 493 | case 1: |
||
| 494 | // end of bitmap |
||
| 495 | $pixeldataoffset = strlen($BMPpixelData); // force to exit loop just in case |
||
| 496 | break; |
||
| 497 | |||
| 498 | case 2: |
||
| 499 | // delta - The 2 bytes following the escape contain unsigned values |
||
| 500 | // indicating the horizontal and vertical offsets of the next pixel |
||
| 501 | // from the current position. |
||
| 502 | $colincrement = $this->LittleEndian2Int($BMPpixelData[ $pixeldataoffset++ ]); |
||
| 503 | $rowincrement = $this->LittleEndian2Int($BMPpixelData[ $pixeldataoffset++ ]); |
||
| 504 | $col = ($pixelcounter % $thisfile_bmp_header_raw['width']) + $colincrement; |
||
| 505 | $row = ($thisfile_bmp_header_raw['height'] - 1 - (($pixelcounter - $col) / $thisfile_bmp_header_raw['width'])) - $rowincrement; |
||
| 506 | $pixelcounter = ($row * $thisfile_bmp_header_raw['width']) + $col; |
||
| 507 | break; |
||
| 508 | |||
| 509 | default: |
||
| 510 | // In absolute mode, the first byte is zero and the second byte is a |
||
| 511 | // value in the range 03H through FFH. The second byte represents the |
||
| 512 | // number of bytes that follow, each of which contains the color index |
||
| 513 | // of a single pixel. Each run must be aligned on a word boundary. |
||
| 514 | for ($i = 0; $i < $secondbyte; $i++) { |
||
| 515 | $paletteindex = $this->LittleEndian2Int($BMPpixelData[ $pixeldataoffset++ ]); |
||
| 516 | $col = $pixelcounter % $thisfile_bmp_header_raw['width']; |
||
| 517 | $row = $thisfile_bmp_header_raw['height'] - 1 - (($pixelcounter - $col) / $thisfile_bmp_header_raw['width']); |
||
| 518 | $thisfile_bmp['data'][$row][$col] = $thisfile_bmp['palette'][$paletteindex]; |
||
| 519 | $pixelcounter++; |
||
| 520 | } |
||
| 521 | while (($pixeldataoffset % 2) != 0) { |
||
| 522 | // Each run must be aligned on a word boundary. |
||
| 523 | $pixeldataoffset++; |
||
| 524 | } |
||
| 525 | break; |
||
| 526 | } |
||
| 527 | |||
| 528 | } else { |
||
| 529 | |||
| 530 | // encoded mode - the first byte specifies the number of consecutive pixels |
||
| 531 | // to be drawn using the color index contained in the second byte. |
||
| 532 | for ($i = 0; $i < $firstbyte; $i++) { |
||
| 533 | $col = $pixelcounter % $thisfile_bmp_header_raw['width']; |
||
| 534 | $row = $thisfile_bmp_header_raw['height'] - 1 - (($pixelcounter - $col) / $thisfile_bmp_header_raw['width']); |
||
| 535 | $thisfile_bmp['data'][$row][$col] = $thisfile_bmp['palette'][$secondbyte]; |
||
| 536 | $pixelcounter++; |
||
| 537 | } |
||
| 538 | |||
| 539 | } |
||
| 540 | } |
||
| 541 | break; |
||
| 542 | |||
| 543 | default: |
||
| 544 | $ThisFileInfo['error'][] = 'Unknown bits-per-pixel value ('.$thisfile_bmp_header_raw['bits_per_pixel'].') - cannot read pixel data'; |
||
| 545 | break; |
||
| 546 | } |
||
| 547 | break; |
||
| 548 | |||
| 549 | |||
| 550 | |||
| 551 | case 2: // BI_RLE4 - http://msdn.microsoft.com/library/en-us/gdi/bitmaps_6x0u.asp |
||
| 552 | switch ($thisfile_bmp_header_raw['bits_per_pixel']) { |
||
| 553 | case 4: |
||
| 554 | $pixelcounter = 0; |
||
| 555 | while ($pixeldataoffset < strlen($BMPpixelData)) { |
||
| 556 | $firstbyte = $this->LittleEndian2Int($BMPpixelData[ $pixeldataoffset++ ]); |
||
| 557 | $secondbyte = $this->LittleEndian2Int($BMPpixelData[ $pixeldataoffset++ ]); |
||
| 558 | if ($firstbyte == 0) { |
||
| 559 | |||
| 560 | // escaped/absolute mode - the first byte of the pair can be set to zero to |
||
| 561 | // indicate an escape character that denotes the end of a line, the end of |
||
| 562 | // a bitmap, or a delta, depending on the value of the second byte. |
||
| 563 | switch ($secondbyte) { |
||
| 564 | case 0: |
||
| 565 | // end of line |
||
| 566 | // no need for special processing, just ignore |
||
| 567 | break; |
||
| 568 | |||
| 569 | case 1: |
||
| 570 | // end of bitmap |
||
| 571 | $pixeldataoffset = strlen($BMPpixelData); // force to exit loop just in case |
||
| 572 | break; |
||
| 573 | |||
| 574 | case 2: |
||
| 575 | // delta - The 2 bytes following the escape contain unsigned values |
||
| 576 | // indicating the horizontal and vertical offsets of the next pixel |
||
| 577 | // from the current position. |
||
| 578 | $colincrement = $this->LittleEndian2Int($BMPpixelData[ $pixeldataoffset++ ]); |
||
| 579 | $rowincrement = $this->LittleEndian2Int($BMPpixelData[ $pixeldataoffset++ ]); |
||
| 580 | $col = ($pixelcounter % $thisfile_bmp_header_raw['width']) + $colincrement; |
||
| 581 | $row = ($thisfile_bmp_header_raw['height'] - 1 - (($pixelcounter - $col) / $thisfile_bmp_header_raw['width'])) - $rowincrement; |
||
| 582 | $pixelcounter = ($row * $thisfile_bmp_header_raw['width']) + $col; |
||
| 583 | break; |
||
| 584 | |||
| 585 | default: |
||
| 586 | // In absolute mode, the first byte is zero. The second byte contains the number |
||
| 587 | // of color indexes that follow. Subsequent bytes contain color indexes in their |
||
| 588 | // high- and low-order 4 bits, one color index for each pixel. In absolute mode, |
||
| 589 | // each run must be aligned on a word boundary. |
||
| 590 | $paletteindexes = array(); |
||
| 591 | for ($i = 0, $iMax = ceil($secondbyte / 2); $i < $iMax; $i++) { |
||
| 592 | $paletteindexbyte = $this->LittleEndian2Int($BMPpixelData[ $pixeldataoffset++ ]); |
||
| 593 | $paletteindexes[] = ($paletteindexbyte & 0xF0) >> 4; |
||
| 594 | $paletteindexes[] = ($paletteindexbyte & 0x0F); |
||
| 595 | } |
||
| 596 | while (($pixeldataoffset % 2) != 0) { |
||
| 597 | // Each run must be aligned on a word boundary. |
||
| 598 | $pixeldataoffset++; |
||
| 599 | } |
||
| 600 | |||
| 601 | foreach ($paletteindexes as $dummy => $paletteindex) { |
||
| 602 | $col = $pixelcounter % $thisfile_bmp_header_raw['width']; |
||
| 603 | $row = $thisfile_bmp_header_raw['height'] - 1 - (($pixelcounter - $col) / $thisfile_bmp_header_raw['width']); |
||
| 604 | $thisfile_bmp['data'][$row][$col] = $thisfile_bmp['palette'][$paletteindex]; |
||
| 605 | $pixelcounter++; |
||
| 606 | } |
||
| 607 | break; |
||
| 608 | } |
||
| 609 | |||
| 610 | } else { |
||
| 611 | |||
| 612 | // encoded mode - the first byte of the pair contains the number of pixels to be |
||
| 613 | // drawn using the color indexes in the second byte. The second byte contains two |
||
| 614 | // color indexes, one in its high-order 4 bits and one in its low-order 4 bits. |
||
| 615 | // The first of the pixels is drawn using the color specified by the high-order |
||
| 616 | // 4 bits, the second is drawn using the color in the low-order 4 bits, the third |
||
| 617 | // is drawn using the color in the high-order 4 bits, and so on, until all the |
||
| 618 | // pixels specified by the first byte have been drawn. |
||
| 619 | $paletteindexes[0] = ($secondbyte & 0xF0) >> 4; |
||
| 620 | $paletteindexes[1] = ($secondbyte & 0x0F); |
||
| 621 | for ($i = 0; $i < $firstbyte; $i++) { |
||
| 622 | $col = $pixelcounter % $thisfile_bmp_header_raw['width']; |
||
| 623 | $row = $thisfile_bmp_header_raw['height'] - 1 - (($pixelcounter - $col) / $thisfile_bmp_header_raw['width']); |
||
| 624 | $thisfile_bmp['data'][$row][$col] = $thisfile_bmp['palette'][$paletteindexes[($i % 2)]]; |
||
| 625 | $pixelcounter++; |
||
| 626 | } |
||
| 627 | |||
| 628 | } |
||
| 629 | } |
||
| 630 | break; |
||
| 631 | |||
| 632 | default: |
||
| 633 | $ThisFileInfo['error'][] = 'Unknown bits-per-pixel value ('.$thisfile_bmp_header_raw['bits_per_pixel'].') - cannot read pixel data'; |
||
| 634 | break; |
||
| 635 | } |
||
| 636 | break; |
||
| 637 | |||
| 638 | |||
| 639 | case 3: // BI_BITFIELDS |
||
| 640 | switch ($thisfile_bmp_header_raw['bits_per_pixel']) { |
||
| 641 | case 16: |
||
| 642 | case 32: |
||
| 643 | $redshift = 0; |
||
| 644 | $greenshift = 0; |
||
| 645 | $blueshift = 0; |
||
| 646 | if (!$thisfile_bmp_header_raw['red_mask'] || !$thisfile_bmp_header_raw['green_mask'] || !$thisfile_bmp_header_raw['blue_mask']) { |
||
| 647 | $ThisFileInfo['error'][] = 'missing $thisfile_bmp_header_raw[(red|green|blue)_mask]'; |
||
| 648 | return false; |
||
| 649 | } |
||
| 650 | while ((($thisfile_bmp_header_raw['red_mask'] >> $redshift) & 0x01) == 0) { |
||
| 651 | $redshift++; |
||
| 652 | } |
||
| 653 | while ((($thisfile_bmp_header_raw['green_mask'] >> $greenshift) & 0x01) == 0) { |
||
| 654 | $greenshift++; |
||
| 655 | } |
||
| 656 | while ((($thisfile_bmp_header_raw['blue_mask'] >> $blueshift) & 0x01) == 0) { |
||
| 657 | $blueshift++; |
||
| 658 | } |
||
| 659 | for ($row = ($thisfile_bmp_header_raw['height'] - 1); $row >= 0; $row--) { |
||
| 660 | for ($col = 0; $col < $thisfile_bmp_header_raw['width']; $col++) { |
||
| 661 | $pixelvalue = $this->LittleEndian2Int(substr($BMPpixelData, $pixeldataoffset, $thisfile_bmp_header_raw['bits_per_pixel'] / 8)); |
||
| 662 | $pixeldataoffset += $thisfile_bmp_header_raw['bits_per_pixel'] / 8; |
||
| 663 | |||
| 664 | $red = (int) round(((($pixelvalue & $thisfile_bmp_header_raw[ 'red_mask']) >> $redshift) / ($thisfile_bmp_header_raw[ 'red_mask'] >> $redshift)) * 255); |
||
| 665 | $green = (int) round(((($pixelvalue & $thisfile_bmp_header_raw[ 'green_mask']) >> $greenshift) / ($thisfile_bmp_header_raw[ 'green_mask'] >> $greenshift)) * 255); |
||
| 666 | $blue = (int) round(((($pixelvalue & $thisfile_bmp_header_raw[ 'blue_mask']) >> $blueshift) / ($thisfile_bmp_header_raw[ 'blue_mask'] >> $blueshift)) * 255); |
||
| 667 | $thisfile_bmp['data'][$row][$col] = (($red << 16) | ($green << 8) | ($blue)); |
||
| 668 | } |
||
| 669 | while (($pixeldataoffset % 4) != 0) { |
||
| 670 | // lines are padded to nearest DWORD |
||
| 671 | $pixeldataoffset++; |
||
| 672 | } |
||
| 673 | } |
||
| 674 | break; |
||
| 675 | |||
| 676 | default: |
||
| 677 | $ThisFileInfo['error'][] = 'Unknown bits-per-pixel value ('.$thisfile_bmp_header_raw['bits_per_pixel'].') - cannot read pixel data'; |
||
| 678 | break; |
||
| 679 | } |
||
| 680 | break; |
||
| 681 | |||
| 682 | |||
| 683 | default: // unhandled compression type |
||
| 684 | $ThisFileInfo['error'][] = 'Unknown/unhandled compression type value ('.$thisfile_bmp_header_raw['compression'].') - cannot decompress pixel data'; |
||
| 685 | break; |
||
| 686 | } |
||
| 687 | } |
||
| 688 | |||
| 689 | return true; |
||
| 690 | } |
||
| 691 | |||
| 692 | public function IntColor2RGB($color) { |
||
| 693 | $red = ($color & 0x00FF0000) >> 16; |
||
| 694 | $green = ($color & 0x0000FF00) >> 8; |
||
| 695 | $blue = ($color & 0x000000FF); |
||
| 696 | return array($red, $green, $blue); |
||
| 697 | } |
||
| 698 | |||
| 699 | public function PlotPixelsGD(&$BMPdata, $truecolor=true) { |
||
| 700 | $imagewidth = $BMPdata['header']['raw']['width']; |
||
| 701 | $imageheight = $BMPdata['header']['raw']['height']; |
||
| 702 | |||
| 703 | if ($truecolor) { |
||
| 704 | |||
| 705 | $gd = @imagecreatetruecolor($imagewidth, $imageheight); |
||
| 706 | |||
| 707 | } else { |
||
| 708 | |||
| 709 | $gd = @imagecreate($imagewidth, $imageheight); |
||
| 710 | if (!empty($BMPdata['palette'])) { |
||
| 711 | // create GD palette from BMP palette |
||
| 712 | foreach ($BMPdata['palette'] as $dummy => $color) { |
||
| 713 | list($r, $g, $b) = $this->IntColor2RGB($color); |
||
| 714 | imagecolorallocate($gd, $r, $g, $b); |
||
| 715 | } |
||
| 716 | } else { |
||
| 717 | // create 216-color websafe palette |
||
| 718 | for ($r = 0x00; $r <= 0xFF; $r += 0x33) { |
||
| 719 | for ($g = 0x00; $g <= 0xFF; $g += 0x33) { |
||
| 720 | for ($b = 0x00; $b <= 0xFF; $b += 0x33) { |
||
| 721 | imagecolorallocate($gd, $r, $g, $b); |
||
| 722 | } |
||
| 723 | } |
||
| 724 | } |
||
| 725 | } |
||
| 726 | |||
| 727 | } |
||
| 728 | if (!is_resource($gd)) { |
||
| 729 | return false; |
||
| 730 | } |
||
| 731 | |||
| 732 | foreach ($BMPdata['data'] as $row => $colarray) { |
||
| 733 | if (!phpthumb_functions::FunctionIsDisabled('set_time_limit')) { |
||
| 734 | set_time_limit(30); |
||
| 735 | } |
||
| 736 | foreach ($colarray as $col => $color) { |
||
| 737 | list($red, $green, $blue) = $this->IntColor2RGB($color); |
||
| 738 | if ($truecolor) { |
||
| 739 | $pixelcolor = imagecolorallocate($gd, $red, $green, $blue); |
||
| 740 | } else { |
||
| 741 | $pixelcolor = imagecolorclosest($gd, $red, $green, $blue); |
||
| 742 | } |
||
| 743 | imagesetpixel($gd, $col, $row, $pixelcolor); |
||
| 744 | } |
||
| 745 | } |
||
| 746 | return $gd; |
||
| 747 | } |
||
| 748 | |||
| 749 | public function PlotBMP(&$BMPinfo) { |
||
| 750 | $starttime = time(); |
||
| 751 | if (!isset($BMPinfo['bmp']['data']) || !is_array($BMPinfo['bmp']['data'])) { |
||
| 752 | echo 'ERROR: no pixel data<BR>'; |
||
| 753 | return false; |
||
| 754 | } |
||
| 755 | if (!phpthumb_functions::FunctionIsDisabled('set_time_limit')) { |
||
| 756 | set_time_limit((int) round($BMPinfo[ 'resolution_x'] * $BMPinfo[ 'resolution_y'] / 10000)); |
||
| 757 | } |
||
| 758 | $im = $this->PlotPixelsGD($BMPinfo['bmp']); |
||
| 759 | if (headers_sent()) { |
||
| 760 | echo 'plotted '.($BMPinfo['resolution_x'] * $BMPinfo['resolution_y']).' pixels in '.(time() - $starttime).' seconds<BR>'; |
||
| 761 | imagedestroy($im); |
||
| 762 | exit; |
||
| 763 | } |
||
| 764 | header('Content-Type: image/png'); |
||
| 765 | imagepng($im); |
||
| 766 | imagedestroy($im); |
||
| 767 | return true; |
||
| 768 | } |
||
| 769 | |||
| 770 | public function BMPcompressionWindowsLookup($compressionid) { |
||
| 771 | static $BMPcompressionWindowsLookup = array( |
||
| 772 | 0 => 'BI_RGB', |
||
| 773 | 1 => 'BI_RLE8', |
||
| 774 | 2 => 'BI_RLE4', |
||
| 775 | 3 => 'BI_BITFIELDS', |
||
| 776 | 4 => 'BI_JPEG', |
||
| 777 | 5 => 'BI_PNG' |
||
| 778 | ); |
||
| 779 | return (isset($BMPcompressionWindowsLookup[$compressionid]) ? $BMPcompressionWindowsLookup[$compressionid] : 'invalid'); |
||
| 780 | } |
||
| 781 | |||
| 782 | public function BMPcompressionOS2Lookup($compressionid) { |
||
| 783 | static $BMPcompressionOS2Lookup = array( |
||
| 784 | 0 => 'BI_RGB', |
||
| 785 | 1 => 'BI_RLE8', |
||
| 786 | 2 => 'BI_RLE4', |
||
| 787 | 3 => 'Huffman 1D', |
||
| 788 | 4 => 'BI_RLE24', |
||
| 789 | ); |
||
| 790 | return (isset($BMPcompressionOS2Lookup[$compressionid]) ? $BMPcompressionOS2Lookup[$compressionid] : 'invalid'); |
||
| 791 | } |
||
| 792 | |||
| 793 | |||
| 794 | // from getid3.lib.php |
||
| 795 | |||
| 796 | public function trunc($floatnumber) { |
||
| 797 | // truncates a floating-point number at the decimal point |
||
| 798 | // returns int (if possible, otherwise float) |
||
| 799 | if ($floatnumber >= 1) { |
||
| 800 | $truncatednumber = floor($floatnumber); |
||
| 801 | } elseif ($floatnumber <= -1) { |
||
| 802 | $truncatednumber = ceil($floatnumber); |
||
| 803 | } else { |
||
| 804 | $truncatednumber = 0; |
||
| 805 | } |
||
| 806 | if ($truncatednumber <= 1073741824) { // 2^30 |
||
| 807 | $truncatednumber = (int) $truncatednumber; |
||
| 808 | } |
||
| 809 | return $truncatednumber; |
||
| 810 | } |
||
| 811 | |||
| 812 | public function LittleEndian2Int($byteword) { |
||
| 813 | $intvalue = 0; |
||
| 814 | $byteword = strrev($byteword); |
||
| 815 | $bytewordlen = strlen($byteword); |
||
| 816 | for ($i = 0; $i < $bytewordlen; $i++) { |
||
| 817 | $intvalue += ord($byteword{$i}) * pow(256, ($bytewordlen - 1 - $i)); |
||
| 818 | } |
||
| 819 | return $intvalue; |
||
| 820 | } |
||
| 821 | |||
| 822 | public function BigEndian2Int($byteword) { |
||
| 824 | } |
||
| 825 | |||
| 826 | public function BigEndian2Bin($byteword) { |
||
| 827 | $binvalue = ''; |
||
| 828 | $bytewordlen = strlen($byteword); |
||
| 829 | for ($i = 0; $i < $bytewordlen; $i++) { |
||
| 830 | $binvalue .= str_pad(decbin(ord($byteword{$i})), 8, '0', STR_PAD_LEFT); |
||
| 831 | } |
||
| 832 | return $binvalue; |
||
| 833 | } |
||
| 834 | |||
| 835 | public function FixedPoint2_30($rawdata) { |
||
| 836 | $binarystring = $this->BigEndian2Bin($rawdata); |
||
| 837 | return $this->Bin2Dec(substr($binarystring, 0, 2)) + (float) ($this->Bin2Dec(substr($binarystring, 2, 30)) / 1073741824); |
||
| 838 | } |
||
| 839 | |||
| 840 | public function Bin2Dec($binstring, $signed=false) { |
||
| 841 | $signmult = 1; |
||
| 842 | if ($signed) { |
||
| 843 | if ($binstring{0} == '1') { |
||
| 844 | $signmult = -1; |
||
| 845 | } |
||
| 846 | $binstring = substr($binstring, 1); |
||
| 847 | } |
||
| 848 | $decvalue = 0; |
||
| 849 | for ($i = 0, $iMax = strlen($binstring); $i < $iMax; $i++) { |
||
| 850 | $decvalue += ((int) $binstring[ strlen($binstring) - $i - 1 ]) * pow(2, $i); |
||
| 851 | } |
||
| 852 | return $this->CastAsInt($decvalue * $signmult); |
||
| 853 | } |
||
| 854 | |||
| 855 | public function CastAsInt($floatnum) { |
||
| 868 | } |
||
| 869 | |||
| 870 | } |
||
| 871 |
Loading history...
This check looks for the bodies of
ifstatements that have no statements or where all statements have been commented out. This may be the result of changes for debugging or the code may simply be obsolete.These
ifbodies can be removed. If you have an empty if but statements in theelsebranch, consider inverting the condition.could be turned into
This is much more concise to read.