mambax7 /
pedigree
| Total Complexity | 133 |
| Total Lines | 836 |
| Duplicated Lines | 0 % |
| Changes | 4 | ||
| Bugs | 0 | Features | 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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| 20 | class phpthumb_bmp |
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| 21 | { |
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| 22 | public function phpthumb_bmp2gd(&$BMPdata, $truecolor = true) |
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| 30 | } |
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| 31 | |||
| 32 | public function phpthumb_bmpfile2gd($filename, $truecolor = true) |
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| 33 | { |
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| 34 | if ($fp = @fopen($filename, 'rb')) { |
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| 35 | $BMPdata = fread($fp, filesize($filename)); |
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| 36 | fclose($fp); |
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| 37 | return $this->phpthumb_bmp2gd($BMPdata, $truecolor); |
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| 38 | } |
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| 39 | return false; |
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| 40 | } |
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| 41 | |||
| 42 | public function GD2BMPstring(&$gd_image) |
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| 43 | { |
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| 44 | $imageX = imagesx($gd_image); |
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| 45 | $imageY = imagesy($gd_image); |
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| 46 | |||
| 47 | $BMP = ''; |
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| 48 | for ($y = ($imageY - 1); $y >= 0; $y--) { |
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| 49 | $thisline = ''; |
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| 50 | for ($x = 0; $x < $imageX; $x++) { |
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| 51 | $argb = phpthumb_functions::GetPixelColor($gd_image, $x, $y); |
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| 52 | $thisline .= chr($argb['blue']) . chr($argb['green']) . chr($argb['red']); |
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| 53 | } |
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| 54 | while (strlen($thisline) % 4) { |
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| 55 | $thisline .= "\x00"; |
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| 56 | } |
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| 57 | $BMP .= $thisline; |
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| 58 | } |
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| 59 | |||
| 60 | $bmpSize = strlen($BMP) + 14 + 40; |
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| 61 | // BITMAPFILEHEADER [14 bytes] - http://msdn.microsoft.com/library/en-us/gdi/bitmaps_62uq.asp |
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| 62 | $BITMAPFILEHEADER = 'BM'; // WORD bfType; |
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| 63 | $BITMAPFILEHEADER .= phpthumb_functions::LittleEndian2String($bmpSize, 4); // DWORD bfSize; |
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| 64 | $BITMAPFILEHEADER .= phpthumb_functions::LittleEndian2String(0, 2); // WORD bfReserved1; |
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| 65 | $BITMAPFILEHEADER .= phpthumb_functions::LittleEndian2String(0, 2); // WORD bfReserved2; |
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| 66 | $BITMAPFILEHEADER .= phpthumb_functions::LittleEndian2String(54, 4); // DWORD bfOffBits; |
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| 67 | |||
| 68 | // BITMAPINFOHEADER - [40 bytes] http://msdn.microsoft.com/library/en-us/gdi/bitmaps_1rw2.asp |
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| 69 | $BITMAPINFOHEADER = phpthumb_functions::LittleEndian2String(40, 4); // DWORD biSize; |
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| 70 | $BITMAPINFOHEADER .= phpthumb_functions::LittleEndian2String($imageX, 4); // LONG biWidth; |
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| 71 | $BITMAPINFOHEADER .= phpthumb_functions::LittleEndian2String($imageY, 4); // LONG biHeight; |
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| 72 | $BITMAPINFOHEADER .= phpthumb_functions::LittleEndian2String(1, 2); // WORD biPlanes; |
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| 73 | $BITMAPINFOHEADER .= phpthumb_functions::LittleEndian2String(24, 2); // WORD biBitCount; |
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| 74 | $BITMAPINFOHEADER .= phpthumb_functions::LittleEndian2String(0, 4); // DWORD biCompression; |
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| 75 | $BITMAPINFOHEADER .= phpthumb_functions::LittleEndian2String(0, 4); // DWORD biSizeImage; |
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| 76 | $BITMAPINFOHEADER .= phpthumb_functions::LittleEndian2String(2835, 4); // LONG biXPelsPerMeter; |
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| 77 | $BITMAPINFOHEADER .= phpthumb_functions::LittleEndian2String(2835, 4); // LONG biYPelsPerMeter; |
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| 78 | $BITMAPINFOHEADER .= phpthumb_functions::LittleEndian2String(0, 4); // DWORD biClrUsed; |
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| 79 | $BITMAPINFOHEADER .= phpthumb_functions::LittleEndian2String(0, 4); // DWORD biClrImportant; |
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| 80 | |||
| 81 | return $BITMAPFILEHEADER . $BITMAPINFOHEADER . $BMP; |
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| 82 | } |
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| 83 | |||
| 84 | public function getid3_bmp(&$BMPdata, &$ThisFileInfo, $ExtractPalette = false, $ExtractData = false) |
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| 85 | { |
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| 86 | // shortcuts |
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| 87 | $ThisFileInfo['bmp']['header']['raw'] = []; |
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| 88 | $thisfile_bmp = &$ThisFileInfo['bmp']; |
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| 89 | $thisfile_bmp_header = &$thisfile_bmp['header']; |
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| 90 | $thisfile_bmp_header_raw = &$thisfile_bmp_header['raw']; |
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| 91 | |||
| 92 | // BITMAPFILEHEADER [14 bytes] - http://msdn.microsoft.com/library/en-us/gdi/bitmaps_62uq.asp |
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| 93 | // all versions |
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| 94 | // WORD bfType; |
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| 95 | // DWORD bfSize; |
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| 96 | // WORD bfReserved1; |
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| 97 | // WORD bfReserved2; |
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| 98 | // DWORD bfOffBits; |
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| 99 | |||
| 100 | $offset = 0; |
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| 101 | $overalloffset = 0; |
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| 102 | $BMPheader = substr($BMPdata, $overalloffset, 14 + 40); |
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| 103 | $overalloffset += (14 + 40); |
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| 104 | |||
| 105 | $thisfile_bmp_header_raw['identifier'] = substr($BMPheader, $offset, 2); |
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| 106 | $offset += 2; |
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| 107 | |||
| 108 | if ($thisfile_bmp_header_raw['identifier'] != 'BM') { |
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| 109 | $ThisFileInfo['error'][] = 'Expecting "BM" at offset ' . (int)(@$ThisFileInfo['avdataoffset']) . ', found "' . $thisfile_bmp_header_raw['identifier'] . '"'; |
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| 110 | unset($ThisFileInfo['fileformat']); |
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| 111 | unset($ThisFileInfo['bmp']); |
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| 112 | return false; |
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| 113 | } |
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| 114 | |||
| 115 | $thisfile_bmp_header_raw['filesize'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4)); |
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| 116 | $offset += 4; |
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| 117 | $thisfile_bmp_header_raw['reserved1'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 2)); |
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| 118 | $offset += 2; |
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| 119 | $thisfile_bmp_header_raw['reserved2'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 2)); |
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| 120 | $offset += 2; |
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| 121 | $thisfile_bmp_header_raw['data_offset'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4)); |
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| 122 | $offset += 4; |
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| 123 | $thisfile_bmp_header_raw['header_size'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4)); |
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| 124 | $offset += 4; |
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| 125 | |||
| 126 | // check if the hardcoded-to-1 "planes" is at offset 22 or 26 |
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| 127 | $planes22 = $this->LittleEndian2Int(substr($BMPheader, 22, 2)); |
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| 128 | $planes26 = $this->LittleEndian2Int(substr($BMPheader, 26, 2)); |
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| 129 | if (($planes22 == 1) && ($planes26 != 1)) { |
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| 130 | $thisfile_bmp['type_os'] = 'OS/2'; |
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| 131 | $thisfile_bmp['type_version'] = 1; |
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| 132 | } elseif (($planes26 == 1) && ($planes22 != 1)) { |
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| 133 | $thisfile_bmp['type_os'] = 'Windows'; |
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| 134 | $thisfile_bmp['type_version'] = 1; |
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| 135 | } elseif ($thisfile_bmp_header_raw['header_size'] == 12) { |
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| 136 | $thisfile_bmp['type_os'] = 'OS/2'; |
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| 137 | $thisfile_bmp['type_version'] = 1; |
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| 138 | } elseif ($thisfile_bmp_header_raw['header_size'] == 40) { |
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| 139 | $thisfile_bmp['type_os'] = 'Windows'; |
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| 140 | $thisfile_bmp['type_version'] = 1; |
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| 141 | } elseif ($thisfile_bmp_header_raw['header_size'] == 84) { |
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| 142 | $thisfile_bmp['type_os'] = 'Windows'; |
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| 143 | $thisfile_bmp['type_version'] = 4; |
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| 144 | } elseif ($thisfile_bmp_header_raw['header_size'] == 100) { |
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| 145 | $thisfile_bmp['type_os'] = 'Windows'; |
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| 146 | $thisfile_bmp['type_version'] = 5; |
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| 147 | } else { |
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| 148 | $ThisFileInfo['error'][] = 'Unknown BMP subtype (or not a BMP file)'; |
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| 149 | unset($ThisFileInfo['fileformat']); |
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| 150 | unset($ThisFileInfo['bmp']); |
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| 151 | return false; |
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| 152 | } |
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| 153 | |||
| 154 | $ThisFileInfo['fileformat'] = 'bmp'; |
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| 155 | $ThisFileInfo['video']['dataformat'] = 'bmp'; |
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| 156 | $ThisFileInfo['video']['lossless'] = true; |
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| 157 | $ThisFileInfo['video']['pixel_aspect_ratio'] = (float)1; |
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| 158 | |||
| 159 | if ($thisfile_bmp['type_os'] == 'OS/2') { |
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| 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'] . ' ' . $thisfile_bmp_header_raw['bits_per_pixel'] . '-bit'; |
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| 231 | } |
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| 232 | } elseif ($thisfile_bmp['type_os'] == 'Windows') { |
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| 233 | // Windows-format BMP |
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| 234 | |||
| 235 | // BITMAPINFOHEADER - [40 bytes] http://msdn.microsoft.com/library/en-us/gdi/bitmaps_1rw2.asp |
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| 236 | // all versions |
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| 237 | // DWORD biSize; |
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| 238 | // LONG biWidth; |
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| 239 | // LONG biHeight; |
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| 240 | // WORD biPlanes; |
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| 241 | // WORD biBitCount; |
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| 242 | // DWORD biCompression; |
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| 243 | // DWORD biSizeImage; |
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| 244 | // LONG biXPelsPerMeter; |
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| 245 | // LONG biYPelsPerMeter; |
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| 246 | // DWORD biClrUsed; |
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| 247 | // DWORD biClrImportant; |
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| 248 | |||
| 249 | $thisfile_bmp_header_raw['width'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4)); |
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| 250 | $offset += 4; |
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| 251 | $thisfile_bmp_header_raw['height'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4)); |
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| 252 | $offset += 4; |
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| 253 | $thisfile_bmp_header_raw['planes'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 2)); |
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| 254 | $offset += 2; |
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| 255 | $thisfile_bmp_header_raw['bits_per_pixel'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 2)); |
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| 256 | $offset += 2; |
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| 257 | $thisfile_bmp_header_raw['compression'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4)); |
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| 258 | $offset += 4; |
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| 259 | $thisfile_bmp_header_raw['bmp_data_size'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4)); |
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| 260 | $offset += 4; |
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| 261 | $thisfile_bmp_header_raw['resolution_h'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4)); |
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| 262 | $offset += 4; |
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| 263 | $thisfile_bmp_header_raw['resolution_v'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4)); |
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| 264 | $offset += 4; |
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| 265 | $thisfile_bmp_header_raw['colors_used'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4)); |
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| 266 | $offset += 4; |
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| 267 | $thisfile_bmp_header_raw['colors_important'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4)); |
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| 268 | $offset += 4; |
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| 269 | |||
| 270 | $thisfile_bmp_header['compression'] = $this->BMPcompressionWindowsLookup($thisfile_bmp_header_raw['compression']); |
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| 271 | $ThisFileInfo['video']['resolution_x'] = $thisfile_bmp_header_raw['width']; |
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| 272 | $ThisFileInfo['video']['resolution_y'] = $thisfile_bmp_header_raw['height']; |
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| 273 | $ThisFileInfo['video']['codec'] = $thisfile_bmp_header['compression'] . ' ' . $thisfile_bmp_header_raw['bits_per_pixel'] . '-bit'; |
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| 274 | $ThisFileInfo['video']['bits_per_sample'] = $thisfile_bmp_header_raw['bits_per_pixel']; |
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| 275 | |||
| 276 | if (($thisfile_bmp['type_version'] >= 4) || ($thisfile_bmp_header_raw['compression'] == 3)) { |
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| 277 | // should only be v4+, but BMPs with type_version==1 and BI_BITFIELDS compression have been seen |
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| 278 | $BMPheader .= substr($BMPdata, $overalloffset, 44); |
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| 279 | $overalloffset += 44; |
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| 280 | |||
| 281 | // BITMAPV4HEADER - [44 bytes] - http://msdn.microsoft.com/library/en-us/gdi/bitmaps_2k1e.asp |
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| 282 | // Win95+, WinNT4.0+ |
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| 283 | // DWORD bV4RedMask; |
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| 284 | // DWORD bV4GreenMask; |
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| 285 | // DWORD bV4BlueMask; |
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| 286 | // DWORD bV4AlphaMask; |
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| 287 | // DWORD bV4CSType; |
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| 288 | // CIEXYZTRIPLE bV4Endpoints; |
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| 289 | // DWORD bV4GammaRed; |
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| 290 | // DWORD bV4GammaGreen; |
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| 291 | // DWORD bV4GammaBlue; |
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| 292 | $thisfile_bmp_header_raw['red_mask'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4)); |
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| 293 | $offset += 4; |
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| 294 | $thisfile_bmp_header_raw['green_mask'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4)); |
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| 295 | $offset += 4; |
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| 296 | $thisfile_bmp_header_raw['blue_mask'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4)); |
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| 297 | $offset += 4; |
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| 298 | $thisfile_bmp_header_raw['alpha_mask'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4)); |
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| 299 | $offset += 4; |
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| 300 | $thisfile_bmp_header_raw['cs_type'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4)); |
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| 301 | $offset += 4; |
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| 302 | $thisfile_bmp_header_raw['ciexyz_red'] = substr($BMPheader, $offset, 4); |
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| 303 | $offset += 4; |
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| 304 | $thisfile_bmp_header_raw['ciexyz_green'] = substr($BMPheader, $offset, 4); |
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| 305 | $offset += 4; |
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| 306 | $thisfile_bmp_header_raw['ciexyz_blue'] = substr($BMPheader, $offset, 4); |
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| 307 | $offset += 4; |
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| 308 | $thisfile_bmp_header_raw['gamma_red'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4)); |
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| 309 | $offset += 4; |
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| 310 | $thisfile_bmp_header_raw['gamma_green'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4)); |
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| 311 | $offset += 4; |
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| 312 | $thisfile_bmp_header_raw['gamma_blue'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4)); |
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| 313 | $offset += 4; |
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| 314 | |||
| 315 | $thisfile_bmp_header['ciexyz_red'] = $this->FixedPoint2_30(strrev($thisfile_bmp_header_raw['ciexyz_red'])); |
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| 316 | $thisfile_bmp_header['ciexyz_green'] = $this->FixedPoint2_30(strrev($thisfile_bmp_header_raw['ciexyz_green'])); |
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| 317 | $thisfile_bmp_header['ciexyz_blue'] = $this->FixedPoint2_30(strrev($thisfile_bmp_header_raw['ciexyz_blue'])); |
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| 318 | } |
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| 319 | |||
| 320 | if ($thisfile_bmp['type_version'] >= 5) { |
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| 321 | $BMPheader .= substr($BMPdata, $overalloffset, 16); |
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| 322 | $overalloffset += 16; |
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| 323 | |||
| 324 | // BITMAPV5HEADER - [16 bytes] - http://msdn.microsoft.com/library/en-us/gdi/bitmaps_7c36.asp |
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| 325 | // Win98+, Win2000+ |
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| 326 | // DWORD bV5Intent; |
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| 327 | // DWORD bV5ProfileData; |
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| 328 | // DWORD bV5ProfileSize; |
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| 329 | // DWORD bV5Reserved; |
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| 330 | $thisfile_bmp_header_raw['intent'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4)); |
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| 331 | $offset += 4; |
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| 332 | $thisfile_bmp_header_raw['profile_data_offset'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4)); |
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| 333 | $offset += 4; |
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| 334 | $thisfile_bmp_header_raw['profile_data_size'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4)); |
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| 335 | $offset += 4; |
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| 336 | $thisfile_bmp_header_raw['reserved3'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4)); |
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| 337 | $offset += 4; |
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| 338 | } |
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| 339 | } else { |
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| 340 | $ThisFileInfo['error'][] = 'Unknown BMP format in header.'; |
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| 341 | return false; |
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| 342 | } |
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| 343 | |||
| 344 | if ($ExtractPalette || $ExtractData) { |
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| 345 | $PaletteEntries = 0; |
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| 346 | if ($thisfile_bmp_header_raw['bits_per_pixel'] < 16) { |
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| 347 | $PaletteEntries = pow(2, $thisfile_bmp_header_raw['bits_per_pixel']); |
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| 348 | } elseif (isset($thisfile_bmp_header_raw['colors_used']) && ($thisfile_bmp_header_raw['colors_used'] > 0) && ($thisfile_bmp_header_raw['colors_used'] <= 256)) { |
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| 349 | $PaletteEntries = $thisfile_bmp_header_raw['colors_used']; |
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| 350 | } |
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| 351 | if ($PaletteEntries > 0) { |
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| 352 | $BMPpalette = substr($BMPdata, $overalloffset, 4 * $PaletteEntries); |
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| 353 | $overalloffset += 4 * $PaletteEntries; |
||
| 354 | |||
| 355 | $paletteoffset = 0; |
||
| 356 | for ($i = 0; $i < $PaletteEntries; $i++) { |
||
| 357 | // RGBQUAD - http://msdn.microsoft.com/library/en-us/gdi/bitmaps_5f8y.asp |
||
| 358 | // BYTE rgbBlue; |
||
| 359 | // BYTE rgbGreen; |
||
| 360 | // BYTE rgbRed; |
||
| 361 | // BYTE rgbReserved; |
||
| 362 | $blue = $this->LittleEndian2Int($BMPpalette[$paletteoffset++]); |
||
| 363 | $green = $this->LittleEndian2Int($BMPpalette[$paletteoffset++]); |
||
| 364 | $red = $this->LittleEndian2Int($BMPpalette[$paletteoffset++]); |
||
| 365 | if (($thisfile_bmp['type_os'] == 'OS/2') && ($thisfile_bmp['type_version'] == 1)) { |
||
| 366 | // no padding byte |
||
| 367 | } else { |
||
| 368 | $paletteoffset++; // padding byte |
||
| 369 | } |
||
| 370 | $thisfile_bmp['palette'][$i] = (($red << 16) | ($green << 8) | $blue); |
||
| 371 | } |
||
| 372 | } |
||
| 373 | } |
||
| 374 | |||
| 375 | if ($ExtractData) { |
||
| 376 | $RowByteLength = ceil(($thisfile_bmp_header_raw['width'] * ($thisfile_bmp_header_raw['bits_per_pixel'] / 8)) / 4) * 4; // round up to nearest DWORD boundary |
||
| 377 | |||
| 378 | $BMPpixelData = substr($BMPdata, $thisfile_bmp_header_raw['data_offset'], $thisfile_bmp_header_raw['height'] * $RowByteLength); |
||
|
Bug
introduced
by
|
|||
| 379 | $overalloffset = $thisfile_bmp_header_raw['data_offset'] + ($thisfile_bmp_header_raw['height'] * $RowByteLength); |
||
| 380 | |||
| 381 | $pixeldataoffset = 0; |
||
| 382 | switch (@$thisfile_bmp_header_raw['compression']) { |
||
| 383 | case 0: // BI_RGB |
||
| 384 | switch ($thisfile_bmp_header_raw['bits_per_pixel']) { |
||
| 385 | case 1: |
||
| 386 | for ($row = ($thisfile_bmp_header_raw['height'] - 1); $row >= 0; $row--) { |
||
| 387 | for ($col = 0; $col < $thisfile_bmp_header_raw['width']; $col = $col) { |
||
| 388 | $paletteindexbyte = ord($BMPpixelData[$pixeldataoffset++]); |
||
| 389 | for ($i = 7; $i >= 0; $i--) { |
||
| 390 | $paletteindex = ($paletteindexbyte & (0x01 << $i)) >> $i; |
||
| 391 | $thisfile_bmp['data'][$row][$col] = $thisfile_bmp['palette'][$paletteindex]; |
||
| 392 | $col++; |
||
| 393 | } |
||
| 394 | } |
||
| 395 | while (($pixeldataoffset % 4) != 0) { |
||
| 396 | // lines are padded to nearest DWORD |
||
| 397 | $pixeldataoffset++; |
||
| 398 | } |
||
| 399 | } |
||
| 400 | break; |
||
| 401 | |||
| 402 | case 4: |
||
| 403 | for ($row = ($thisfile_bmp_header_raw['height'] - 1); $row >= 0; $row--) { |
||
| 404 | for ($col = 0; $col < $thisfile_bmp_header_raw['width']; $col = $col) { |
||
| 405 | $paletteindexbyte = ord($BMPpixelData[$pixeldataoffset++]); |
||
| 406 | for ($i = 1; $i >= 0; $i--) { |
||
| 407 | $paletteindex = ($paletteindexbyte & (0x0F << (4 * $i))) >> (4 * $i); |
||
| 408 | $thisfile_bmp['data'][$row][$col] = $thisfile_bmp['palette'][$paletteindex]; |
||
| 409 | $col++; |
||
| 410 | } |
||
| 411 | } |
||
| 412 | while (($pixeldataoffset % 4) != 0) { |
||
| 413 | // lines are padded to nearest DWORD |
||
| 414 | $pixeldataoffset++; |
||
| 415 | } |
||
| 416 | } |
||
| 417 | break; |
||
| 418 | |||
| 419 | case 8: |
||
| 420 | for ($row = ($thisfile_bmp_header_raw['height'] - 1); $row >= 0; $row--) { |
||
| 421 | for ($col = 0; $col < $thisfile_bmp_header_raw['width']; $col++) { |
||
| 422 | $paletteindex = ord($BMPpixelData[$pixeldataoffset++]); |
||
| 423 | $thisfile_bmp['data'][$row][$col] = $thisfile_bmp['palette'][$paletteindex]; |
||
| 424 | } |
||
| 425 | while (($pixeldataoffset % 4) != 0) { |
||
| 426 | // lines are padded to nearest DWORD |
||
| 427 | $pixeldataoffset++; |
||
| 428 | } |
||
| 429 | } |
||
| 430 | break; |
||
| 431 | |||
| 432 | case 24: |
||
| 433 | for ($row = ($thisfile_bmp_header_raw['height'] - 1); $row >= 0; $row--) { |
||
| 434 | for ($col = 0; $col < $thisfile_bmp_header_raw['width']; $col++) { |
||
| 435 | $thisfile_bmp['data'][$row][$col] = (ord($BMPpixelData[$pixeldataoffset + 2]) << 16) | (ord($BMPpixelData[$pixeldataoffset + 1]) << 8) | ord($BMPpixelData[$pixeldataoffset]); |
||
| 436 | $pixeldataoffset += 3; |
||
| 437 | } |
||
| 438 | while (($pixeldataoffset % 4) != 0) { |
||
| 439 | // lines are padded to nearest DWORD |
||
| 440 | $pixeldataoffset++; |
||
| 441 | } |
||
| 442 | } |
||
| 443 | break; |
||
| 444 | |||
| 445 | case 32: |
||
| 446 | for ($row = ($thisfile_bmp_header_raw['height'] - 1); $row >= 0; $row--) { |
||
| 447 | for ($col = 0; $col < $thisfile_bmp_header_raw['width']; $col++) { |
||
| 448 | $thisfile_bmp['data'][$row][$col] = (ord($BMPpixelData[$pixeldataoffset + 3]) << 24) | (ord($BMPpixelData[$pixeldataoffset + 2]) << 16) | (ord($BMPpixelData[$pixeldataoffset + 1]) << 8) | ord($BMPpixelData[$pixeldataoffset]); |
||
| 449 | $pixeldataoffset += 4; |
||
| 450 | } |
||
| 451 | while (($pixeldataoffset % 4) != 0) { |
||
| 452 | // lines are padded to nearest DWORD |
||
| 453 | $pixeldataoffset++; |
||
| 454 | } |
||
| 455 | } |
||
| 456 | break; |
||
| 457 | |||
| 458 | case 16: |
||
| 459 | // ? |
||
| 460 | break; |
||
| 461 | |||
| 462 | default: |
||
| 463 | $ThisFileInfo['error'][] = 'Unknown bits-per-pixel value (' . $thisfile_bmp_header_raw['bits_per_pixel'] . ') - cannot read pixel data'; |
||
| 464 | break; |
||
| 465 | } |
||
| 466 | break; |
||
| 467 | |||
| 468 | case 1: // BI_RLE8 - http://msdn.microsoft.com/library/en-us/gdi/bitmaps_6x0u.asp |
||
| 469 | switch ($thisfile_bmp_header_raw['bits_per_pixel']) { |
||
| 470 | case 8: |
||
| 471 | $pixelcounter = 0; |
||
| 472 | while ($pixeldataoffset < strlen($BMPpixelData)) { |
||
| 473 | $firstbyte = $this->LittleEndian2Int($BMPpixelData[$pixeldataoffset++]); |
||
| 474 | $secondbyte = $this->LittleEndian2Int($BMPpixelData[$pixeldataoffset++]); |
||
| 475 | if ($firstbyte == 0) { |
||
| 476 | // escaped/absolute mode - the first byte of the pair can be set to zero to |
||
| 477 | // indicate an escape character that denotes the end of a line, the end of |
||
| 478 | // a bitmap, or a delta, depending on the value of the second byte. |
||
| 479 | switch ($secondbyte) { |
||
| 480 | case 0: |
||
| 481 | // end of line |
||
| 482 | // no need for special processing, just ignore |
||
| 483 | break; |
||
| 484 | |||
| 485 | case 1: |
||
| 486 | // end of bitmap |
||
| 487 | $pixeldataoffset = strlen($BMPpixelData); // force to exit loop just in case |
||
| 488 | break; |
||
| 489 | |||
| 490 | case 2: |
||
| 491 | // delta - The 2 bytes following the escape contain unsigned values |
||
| 492 | // indicating the horizontal and vertical offsets of the next pixel |
||
| 493 | // from the current position. |
||
| 494 | $colincrement = $this->LittleEndian2Int($BMPpixelData[$pixeldataoffset++]); |
||
| 495 | $rowincrement = $this->LittleEndian2Int($BMPpixelData[$pixeldataoffset++]); |
||
| 496 | $col = ($pixelcounter % $thisfile_bmp_header_raw['width']) + $colincrement; |
||
| 497 | $row = ($thisfile_bmp_header_raw['height'] - 1 - (($pixelcounter - $col) / $thisfile_bmp_header_raw['width'])) - $rowincrement; |
||
| 498 | $pixelcounter = ($row * $thisfile_bmp_header_raw['width']) + $col; |
||
| 499 | break; |
||
| 500 | |||
| 501 | default: |
||
| 502 | // In absolute mode, the first byte is zero and the second byte is a |
||
| 503 | // value in the range 03H through FFH. The second byte represents the |
||
| 504 | // number of bytes that follow, each of which contains the color index |
||
| 505 | // of a single pixel. Each run must be aligned on a word boundary. |
||
| 506 | for ($i = 0; $i < $secondbyte; $i++) { |
||
| 507 | $paletteindex = $this->LittleEndian2Int($BMPpixelData[$pixeldataoffset++]); |
||
| 508 | $col = $pixelcounter % $thisfile_bmp_header_raw['width']; |
||
| 509 | $row = $thisfile_bmp_header_raw['height'] - 1 - (($pixelcounter - $col) / $thisfile_bmp_header_raw['width']); |
||
| 510 | $thisfile_bmp['data'][$row][$col] = $thisfile_bmp['palette'][$paletteindex]; |
||
| 511 | $pixelcounter++; |
||
| 512 | } |
||
| 513 | while (($pixeldataoffset % 2) != 0) { |
||
| 514 | // Each run must be aligned on a word boundary. |
||
| 515 | $pixeldataoffset++; |
||
| 516 | } |
||
| 517 | break; |
||
| 518 | } |
||
| 519 | } else { |
||
| 520 | // encoded mode - the first byte specifies the number of consecutive pixels |
||
| 521 | // to be drawn using the color index contained in the second byte. |
||
| 522 | for ($i = 0; $i < $firstbyte; $i++) { |
||
| 523 | $col = $pixelcounter % $thisfile_bmp_header_raw['width']; |
||
| 524 | $row = $thisfile_bmp_header_raw['height'] - 1 - (($pixelcounter - $col) / $thisfile_bmp_header_raw['width']); |
||
| 525 | $thisfile_bmp['data'][$row][$col] = $thisfile_bmp['palette'][$secondbyte]; |
||
| 526 | $pixelcounter++; |
||
| 527 | } |
||
| 528 | } |
||
| 529 | } |
||
| 530 | break; |
||
| 531 | |||
| 532 | default: |
||
| 533 | $ThisFileInfo['error'][] = 'Unknown bits-per-pixel value (' . $thisfile_bmp_header_raw['bits_per_pixel'] . ') - cannot read pixel data'; |
||
| 534 | break; |
||
| 535 | } |
||
| 536 | break; |
||
| 537 | |||
| 538 | case 2: // BI_RLE4 - http://msdn.microsoft.com/library/en-us/gdi/bitmaps_6x0u.asp |
||
| 539 | switch ($thisfile_bmp_header_raw['bits_per_pixel']) { |
||
| 540 | case 4: |
||
| 541 | $pixelcounter = 0; |
||
| 542 | while ($pixeldataoffset < strlen($BMPpixelData)) { |
||
| 543 | $firstbyte = $this->LittleEndian2Int($BMPpixelData[$pixeldataoffset++]); |
||
| 544 | $secondbyte = $this->LittleEndian2Int($BMPpixelData[$pixeldataoffset++]); |
||
| 545 | if ($firstbyte == 0) { |
||
| 546 | // escaped/absolute mode - the first byte of the pair can be set to zero to |
||
| 547 | // indicate an escape character that denotes the end of a line, the end of |
||
| 548 | // a bitmap, or a delta, depending on the value of the second byte. |
||
| 549 | switch ($secondbyte) { |
||
| 550 | case 0: |
||
| 551 | // end of line |
||
| 552 | // no need for special processing, just ignore |
||
| 553 | break; |
||
| 554 | |||
| 555 | case 1: |
||
| 556 | // end of bitmap |
||
| 557 | $pixeldataoffset = strlen($BMPpixelData); // force to exit loop just in case |
||
| 558 | break; |
||
| 559 | |||
| 560 | case 2: |
||
| 561 | // delta - The 2 bytes following the escape contain unsigned values |
||
| 562 | // indicating the horizontal and vertical offsets of the next pixel |
||
| 563 | // from the current position. |
||
| 564 | $colincrement = $this->LittleEndian2Int($BMPpixelData[$pixeldataoffset++]); |
||
| 565 | $rowincrement = $this->LittleEndian2Int($BMPpixelData[$pixeldataoffset++]); |
||
| 566 | $col = ($pixelcounter % $thisfile_bmp_header_raw['width']) + $colincrement; |
||
| 567 | $row = ($thisfile_bmp_header_raw['height'] - 1 - (($pixelcounter - $col) / $thisfile_bmp_header_raw['width'])) - $rowincrement; |
||
| 568 | $pixelcounter = ($row * $thisfile_bmp_header_raw['width']) + $col; |
||
| 569 | break; |
||
| 570 | |||
| 571 | default: |
||
| 572 | // In absolute mode, the first byte is zero. The second byte contains the number |
||
| 573 | // of color indexes that follow. Subsequent bytes contain color indexes in their |
||
| 574 | // high- and low-order 4 bits, one color index for each pixel. In absolute mode, |
||
| 575 | // each run must be aligned on a word boundary. |
||
| 576 | $paletteindexes = []; |
||
| 577 | for ($i = 0, $iMax = ceil($secondbyte / 2); $i < $iMax; $i++) { |
||
| 578 | $paletteindexbyte = $this->LittleEndian2Int($BMPpixelData[$pixeldataoffset++]); |
||
| 579 | $paletteindexes[] = ($paletteindexbyte & 0xF0) >> 4; |
||
| 580 | $paletteindexes[] = ($paletteindexbyte & 0x0F); |
||
| 581 | } |
||
| 582 | while (($pixeldataoffset % 2) != 0) { |
||
| 583 | // Each run must be aligned on a word boundary. |
||
| 584 | $pixeldataoffset++; |
||
| 585 | } |
||
| 586 | |||
| 587 | foreach ($paletteindexes as $dummy => $paletteindex) { |
||
| 588 | $col = $pixelcounter % $thisfile_bmp_header_raw['width']; |
||
| 589 | $row = $thisfile_bmp_header_raw['height'] - 1 - (($pixelcounter - $col) / $thisfile_bmp_header_raw['width']); |
||
| 590 | $thisfile_bmp['data'][$row][$col] = $thisfile_bmp['palette'][$paletteindex]; |
||
| 591 | $pixelcounter++; |
||
| 592 | } |
||
| 593 | break; |
||
| 594 | } |
||
| 595 | } else { |
||
| 596 | // encoded mode - the first byte of the pair contains the number of pixels to be |
||
| 597 | // drawn using the color indexes in the second byte. The second byte contains two |
||
| 598 | // color indexes, one in its high-order 4 bits and one in its low-order 4 bits. |
||
| 599 | // The first of the pixels is drawn using the color specified by the high-order |
||
| 600 | // 4 bits, the second is drawn using the color in the low-order 4 bits, the third |
||
| 601 | // is drawn using the color in the high-order 4 bits, and so on, until all the |
||
| 602 | // pixels specified by the first byte have been drawn. |
||
| 603 | $paletteindexes[0] = ($secondbyte & 0xF0) >> 4; |
||
| 604 | $paletteindexes[1] = ($secondbyte & 0x0F); |
||
| 605 | for ($i = 0; $i < $firstbyte; $i++) { |
||
| 606 | $col = $pixelcounter % $thisfile_bmp_header_raw['width']; |
||
| 607 | $row = $thisfile_bmp_header_raw['height'] - 1 - (($pixelcounter - $col) / $thisfile_bmp_header_raw['width']); |
||
| 608 | $thisfile_bmp['data'][$row][$col] = $thisfile_bmp['palette'][$paletteindexes[$i % 2]]; |
||
| 609 | $pixelcounter++; |
||
| 610 | } |
||
| 611 | } |
||
| 612 | } |
||
| 613 | break; |
||
| 614 | |||
| 615 | default: |
||
| 616 | $ThisFileInfo['error'][] = 'Unknown bits-per-pixel value (' . $thisfile_bmp_header_raw['bits_per_pixel'] . ') - cannot read pixel data'; |
||
| 617 | break; |
||
| 618 | } |
||
| 619 | break; |
||
| 620 | |||
| 621 | case 3: // BI_BITFIELDS |
||
| 622 | switch ($thisfile_bmp_header_raw['bits_per_pixel']) { |
||
| 623 | case 16: |
||
| 624 | case 32: |
||
| 625 | $redshift = 0; |
||
| 626 | $greenshift = 0; |
||
| 627 | $blueshift = 0; |
||
| 628 | if (!$thisfile_bmp_header_raw['red_mask'] || !$thisfile_bmp_header_raw['green_mask'] || !$thisfile_bmp_header_raw['blue_mask']) { |
||
| 629 | $ThisFileInfo['error'][] = 'missing $thisfile_bmp_header_raw[(red|green|blue)_mask]'; |
||
| 630 | return false; |
||
| 631 | } |
||
| 632 | while ((($thisfile_bmp_header_raw['red_mask'] >> $redshift) & 0x01) == 0) { |
||
| 633 | $redshift++; |
||
| 634 | } |
||
| 635 | while ((($thisfile_bmp_header_raw['green_mask'] >> $greenshift) & 0x01) == 0) { |
||
| 636 | $greenshift++; |
||
| 637 | } |
||
| 638 | while ((($thisfile_bmp_header_raw['blue_mask'] >> $blueshift) & 0x01) == 0) { |
||
| 639 | $blueshift++; |
||
| 640 | } |
||
| 641 | for ($row = ($thisfile_bmp_header_raw['height'] - 1); $row >= 0; $row--) { |
||
| 642 | for ($col = 0; $col < $thisfile_bmp_header_raw['width']; $col++) { |
||
| 643 | $pixelvalue = $this->LittleEndian2Int(substr($BMPpixelData, $pixeldataoffset, $thisfile_bmp_header_raw['bits_per_pixel'] / 8)); |
||
| 644 | $pixeldataoffset += $thisfile_bmp_header_raw['bits_per_pixel'] / 8; |
||
| 645 | |||
| 646 | $red = (int)round(((($pixelvalue & $thisfile_bmp_header_raw['red_mask']) >> $redshift) / ($thisfile_bmp_header_raw['red_mask'] >> $redshift)) * 255); |
||
| 647 | $green = (int)round(((($pixelvalue & $thisfile_bmp_header_raw['green_mask']) >> $greenshift) / ($thisfile_bmp_header_raw['green_mask'] >> $greenshift)) * 255); |
||
| 648 | $blue = (int)round(((($pixelvalue & $thisfile_bmp_header_raw['blue_mask']) >> $blueshift) / ($thisfile_bmp_header_raw['blue_mask'] >> $blueshift)) * 255); |
||
| 649 | $thisfile_bmp['data'][$row][$col] = (($red << 16) | ($green << 8) | $blue); |
||
| 650 | } |
||
| 651 | while (($pixeldataoffset % 4) != 0) { |
||
| 652 | // lines are padded to nearest DWORD |
||
| 653 | $pixeldataoffset++; |
||
| 654 | } |
||
| 655 | } |
||
| 656 | break; |
||
| 657 | |||
| 658 | default: |
||
| 659 | $ThisFileInfo['error'][] = 'Unknown bits-per-pixel value (' . $thisfile_bmp_header_raw['bits_per_pixel'] . ') - cannot read pixel data'; |
||
| 660 | break; |
||
| 661 | } |
||
| 662 | break; |
||
| 663 | |||
| 664 | default: // unhandled compression type |
||
| 665 | $ThisFileInfo['error'][] = 'Unknown/unhandled compression type value (' . $thisfile_bmp_header_raw['compression'] . ') - cannot decompress pixel data'; |
||
| 666 | break; |
||
| 667 | } |
||
| 668 | } |
||
| 669 | |||
| 670 | return true; |
||
| 671 | } |
||
| 672 | |||
| 673 | public function IntColor2RGB($color) |
||
| 674 | { |
||
| 675 | $red = ($color & 0x00FF0000) >> 16; |
||
| 676 | $green = ($color & 0x0000FF00) >> 8; |
||
| 677 | $blue = ($color & 0x000000FF); |
||
| 678 | return [$red, $green, $blue]; |
||
| 679 | } |
||
| 680 | |||
| 681 | public function PlotPixelsGD(&$BMPdata, $truecolor = true) |
||
| 682 | { |
||
| 683 | $imagewidth = $BMPdata['header']['raw']['width']; |
||
| 684 | $imageheight = $BMPdata['header']['raw']['height']; |
||
| 685 | |||
| 686 | if ($truecolor) { |
||
| 687 | $gd = @imagecreatetruecolor($imagewidth, $imageheight); |
||
| 688 | } else { |
||
| 689 | $gd = @imagecreate($imagewidth, $imageheight); |
||
| 690 | if (!empty($BMPdata['palette'])) { |
||
| 691 | // create GD palette from BMP palette |
||
| 692 | foreach ($BMPdata['palette'] as $dummy => $color) { |
||
| 693 | [$r, $g, $b] = $this->IntColor2RGB($color); |
||
| 694 | imagecolorallocate($gd, $r, $g, $b); |
||
| 695 | } |
||
| 696 | } else { |
||
| 697 | // create 216-color websafe palette |
||
| 698 | for ($r = 0x00; $r <= 0xFF; $r += 0x33) { |
||
| 699 | for ($g = 0x00; $g <= 0xFF; $g += 0x33) { |
||
| 700 | for ($b = 0x00; $b <= 0xFF; $b += 0x33) { |
||
| 701 | imagecolorallocate($gd, $r, $g, $b); |
||
| 702 | } |
||
| 703 | } |
||
| 704 | } |
||
| 705 | } |
||
| 706 | } |
||
| 707 | if (!is_resource($gd) && !(is_object($gd) && $gd instanceof \GdImage)) { |
||
| 708 | return false; |
||
| 709 | } |
||
| 710 | |||
| 711 | foreach ($BMPdata['data'] as $row => $colarray) { |
||
| 712 | if (!phpthumb_functions::FunctionIsDisabled('set_time_limit')) { |
||
| 713 | set_time_limit(30); |
||
| 714 | } |
||
| 715 | foreach ($colarray as $col => $color) { |
||
| 716 | [$red, $green, $blue] = $this->IntColor2RGB($color); |
||
| 717 | if ($truecolor) { |
||
| 718 | $pixelcolor = imagecolorallocate($gd, $red, $green, $blue); |
||
| 719 | } else { |
||
| 720 | $pixelcolor = imagecolorclosest($gd, $red, $green, $blue); |
||
| 721 | } |
||
| 722 | imagesetpixel($gd, $col, $row, $pixelcolor); |
||
| 723 | } |
||
| 724 | } |
||
| 725 | return $gd; |
||
| 726 | } |
||
| 727 | |||
| 728 | public function PlotBMP(&$BMPinfo) |
||
| 729 | { |
||
| 730 | $starttime = time(); |
||
| 731 | if (!isset($BMPinfo['bmp']['data']) || !is_array($BMPinfo['bmp']['data'])) { |
||
| 732 | echo 'ERROR: no pixel data<BR>'; |
||
| 733 | return false; |
||
| 734 | } |
||
| 735 | if (!phpthumb_functions::FunctionIsDisabled('set_time_limit')) { |
||
| 736 | set_time_limit((int)round($BMPinfo['resolution_x'] * $BMPinfo['resolution_y'] / 10000)); |
||
| 737 | } |
||
| 738 | $im = $this->PlotPixelsGD($BMPinfo['bmp']); |
||
| 739 | if (headers_sent()) { |
||
| 740 | echo 'plotted ' . ($BMPinfo['resolution_x'] * $BMPinfo['resolution_y']) . ' pixels in ' . (time() - $starttime) . ' seconds<BR>'; |
||
| 741 | imagedestroy($im); |
||
| 742 | exit; |
||
| 743 | } |
||
| 744 | header('Content-Type: image/png'); |
||
| 745 | imagepng($im); |
||
| 746 | imagedestroy($im); |
||
| 747 | return true; |
||
| 748 | } |
||
| 749 | |||
| 750 | public function BMPcompressionWindowsLookup($compressionid) |
||
| 751 | { |
||
| 752 | static $BMPcompressionWindowsLookup = [ |
||
| 753 | 0 => 'BI_RGB', |
||
| 754 | 1 => 'BI_RLE8', |
||
| 755 | 2 => 'BI_RLE4', |
||
| 756 | 3 => 'BI_BITFIELDS', |
||
| 757 | 4 => 'BI_JPEG', |
||
| 758 | 5 => 'BI_PNG', |
||
| 759 | ]; |
||
| 760 | return (isset($BMPcompressionWindowsLookup[$compressionid]) ? $BMPcompressionWindowsLookup[$compressionid] : 'invalid'); |
||
| 761 | } |
||
| 762 | |||
| 763 | public function BMPcompressionOS2Lookup($compressionid) |
||
| 764 | { |
||
| 765 | static $BMPcompressionOS2Lookup = [ |
||
| 766 | 0 => 'BI_RGB', |
||
| 767 | 1 => 'BI_RLE8', |
||
| 768 | 2 => 'BI_RLE4', |
||
| 769 | 3 => 'Huffman 1D', |
||
| 770 | 4 => 'BI_RLE24', |
||
| 771 | ]; |
||
| 772 | return (isset($BMPcompressionOS2Lookup[$compressionid]) ? $BMPcompressionOS2Lookup[$compressionid] : 'invalid'); |
||
| 773 | } |
||
| 774 | |||
| 775 | // from getid3.lib.php |
||
| 776 | |||
| 777 | public function trunc($floatnumber) |
||
| 778 | { |
||
| 779 | // truncates a floating-point number at the decimal point |
||
| 780 | // returns int (if possible, otherwise float) |
||
| 781 | if ($floatnumber >= 1) { |
||
| 782 | $truncatednumber = floor($floatnumber); |
||
| 783 | } elseif ($floatnumber <= -1) { |
||
| 784 | $truncatednumber = ceil($floatnumber); |
||
| 785 | } else { |
||
| 786 | $truncatednumber = 0; |
||
| 787 | } |
||
| 788 | if ($truncatednumber <= 1073741824) { // 2^30 |
||
| 789 | $truncatednumber = (int)$truncatednumber; |
||
| 790 | } |
||
| 791 | return $truncatednumber; |
||
| 792 | } |
||
| 793 | |||
| 794 | public function LittleEndian2Int($byteword) |
||
| 795 | { |
||
| 796 | $intvalue = 0; |
||
| 797 | $byteword = strrev($byteword); |
||
| 798 | $bytewordlen = strlen($byteword); |
||
| 799 | for ($i = 0; $i < $bytewordlen; $i++) { |
||
| 800 | $intvalue += ord($byteword[$i]) * pow(256, $bytewordlen - 1 - $i); |
||
| 801 | } |
||
| 802 | return $intvalue; |
||
| 803 | } |
||
| 804 | |||
| 805 | public function BigEndian2Int($byteword) |
||
| 808 | } |
||
| 809 | |||
| 810 | public function BigEndian2Bin($byteword) |
||
| 811 | { |
||
| 812 | $binvalue = ''; |
||
| 813 | $bytewordlen = strlen($byteword); |
||
| 814 | for ($i = 0; $i < $bytewordlen; $i++) { |
||
| 815 | $binvalue .= str_pad(decbin(ord($byteword[$i])), 8, '0', STR_PAD_LEFT); |
||
| 816 | } |
||
| 817 | return $binvalue; |
||
| 818 | } |
||
| 819 | |||
| 820 | public function FixedPoint2_30($rawdata) |
||
| 821 | { |
||
| 822 | $binarystring = $this->BigEndian2Bin($rawdata); |
||
| 823 | return $this->Bin2Dec(substr($binarystring, 0, 2)) + (float)($this->Bin2Dec(substr($binarystring, 2, 30)) / 1073741824); |
||
| 824 | } |
||
| 825 | |||
| 826 | public function Bin2Dec($binstring, $signed = false) |
||
| 827 | { |
||
| 828 | $signmult = 1; |
||
| 829 | if ($signed) { |
||
| 830 | if ($binstring[0] == '1') { |
||
| 831 | $signmult = -1; |
||
| 832 | } |
||
| 833 | $binstring = substr($binstring, 1); |
||
| 834 | } |
||
| 835 | $decvalue = 0; |
||
| 836 | for ($i = 0, $iMax = strlen($binstring); $i < $iMax; $i++) { |
||
| 837 | $decvalue += ((int)$binstring[strlen($binstring) - $i - 1]) * pow(2, $i); |
||
| 838 | } |
||
| 839 | return $this->CastAsInt($decvalue * $signmult); |
||
| 840 | } |
||
| 841 | |||
| 842 | public function CastAsInt($floatnum) |
||
| 856 | } |
||
| 857 | } |
||
| 858 |
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