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<?php |
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///////////////////////////////////////////////////////////////// |
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/// getID3() by James Heinrich <[email protected]> // |
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// available at http://getid3.sourceforge.net // |
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// or http://www.getid3.org // |
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///////////////////////////////////////////////////////////////// |
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// See readme.txt for more details // |
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///////////////////////////////////////////////////////////////// |
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// // |
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// module.graphic.bmp.php // |
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// module for analyzing BMP Image files // |
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// dependencies: NONE // |
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// /// |
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///////////////////////////////////////////////////////////////// |
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// // |
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// Modified for use in phpThumb() - James Heinrich 2004.07.27 // |
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// // |
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///////////////////////////////////////////////////////////////// |
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/** |
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* Class phpthumb_bmp |
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*/ |
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class phpthumb_bmp |
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{ |
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// removed for XOOPS |
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//function phpthumb_bmp() { |
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// return true; |
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//} |
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/** |
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* @param $BMPdata |
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* @param bool $truecolor |
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* @return bool|resource |
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*/ |
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public function phpthumb_bmp2gd(&$BMPdata, $truecolor = true) |
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{ |
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$ThisFileInfo = array(); |
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if ($this->getid3_bmp($BMPdata, $ThisFileInfo, true, true)) { |
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$gd = $this->PlotPixelsGD($ThisFileInfo['bmp'], $truecolor); |
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return $gd; |
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} |
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return false; |
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} |
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/** |
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* @param $filename |
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* @param bool $truecolor |
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* @return bool|resource |
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*/ |
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public function phpthumb_bmpfile2gd($filename, $truecolor = true) |
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{ |
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if ($fp = @fopen($filename, 'rb')) { |
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$BMPdata = fread($fp, filesize($filename)); |
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fclose($fp); |
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return $this->phpthumb_bmp2gd($BMPdata, $truecolor); |
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} |
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return false; |
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} |
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/** |
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* @param $gd_image |
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* @return string |
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*/ |
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public function GD2BMPstring(&$gd_image) |
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{ |
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$imageX = imagesx($gd_image); |
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$imageY = imagesy($gd_image); |
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$BMP = ''; |
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for ($y = ($imageY - 1); $y >= 0; $y--) { |
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$thisline = ''; |
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for ($x = 0; $x < $imageX; $x++) { |
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$argb = phpthumb_functions::GetPixelColor($gd_image, $x, $y); |
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$thisline .= chr($argb['blue']) . chr($argb['green']) . chr($argb['red']); |
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} |
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while (strlen($thisline) % 4) { |
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$thisline .= "\x00"; |
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} |
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$BMP .= $thisline; |
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} |
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$bmpSize = strlen($BMP) + 14 + 40; |
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// BITMAPFILEHEADER [14 bytes] - http://msdn.microsoft.com/library/en-us/gdi/bitmaps_62uq.asp |
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$BITMAPFILEHEADER = 'BM'; // WORD bfType; |
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$BITMAPFILEHEADER .= phpthumb_functions::LittleEndian2String($bmpSize, 4); // DWORD bfSize; |
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$BITMAPFILEHEADER .= phpthumb_functions::LittleEndian2String(0, 2); // WORD bfReserved1; |
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$BITMAPFILEHEADER .= phpthumb_functions::LittleEndian2String(0, 2); // WORD bfReserved2; |
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$BITMAPFILEHEADER .= phpthumb_functions::LittleEndian2String(54, 4); // DWORD bfOffBits; |
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// BITMAPINFOHEADER - [40 bytes] http://msdn.microsoft.com/library/en-us/gdi/bitmaps_1rw2.asp |
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$BITMAPINFOHEADER = phpthumb_functions::LittleEndian2String(40, 4); // DWORD biSize; |
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$BITMAPINFOHEADER .= phpthumb_functions::LittleEndian2String($imageX, 4); // LONG biWidth; |
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$BITMAPINFOHEADER .= phpthumb_functions::LittleEndian2String($imageY, 4); // LONG biHeight; |
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$BITMAPINFOHEADER .= phpthumb_functions::LittleEndian2String(1, 2); // WORD biPlanes; |
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$BITMAPINFOHEADER .= phpthumb_functions::LittleEndian2String(24, 2); // WORD biBitCount; |
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$BITMAPINFOHEADER .= phpthumb_functions::LittleEndian2String(0, 4); // DWORD biCompression; |
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$BITMAPINFOHEADER .= phpthumb_functions::LittleEndian2String(0, 4); // DWORD biSizeImage; |
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$BITMAPINFOHEADER .= phpthumb_functions::LittleEndian2String(2835, 4); // LONG biXPelsPerMeter; |
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$BITMAPINFOHEADER .= phpthumb_functions::LittleEndian2String(2835, 4); // LONG biYPelsPerMeter; |
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$BITMAPINFOHEADER .= phpthumb_functions::LittleEndian2String(0, 4); // DWORD biClrUsed; |
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$BITMAPINFOHEADER .= phpthumb_functions::LittleEndian2String(0, 4); // DWORD biClrImportant; |
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return $BITMAPFILEHEADER . $BITMAPINFOHEADER . $BMP; |
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} |
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/** |
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* @param $BMPdata |
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* @param $ThisFileInfo |
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* @param bool $ExtractPalette |
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* @param bool $ExtractData |
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* @return bool |
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*/ |
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public function getid3_bmp(&$BMPdata, &$ThisFileInfo, $ExtractPalette = false, $ExtractData = false) |
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{ |
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// shortcuts |
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$ThisFileInfo['bmp']['header']['raw'] = array(); |
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$thisfile_bmp = &$ThisFileInfo['bmp']; |
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$thisfile_bmp_header = &$thisfile_bmp['header']; |
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$thisfile_bmp_header_raw = &$thisfile_bmp_header['raw']; |
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// BITMAPFILEHEADER [14 bytes] - http://msdn.microsoft.com/library/en-us/gdi/bitmaps_62uq.asp |
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// all versions |
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// WORD bfType; |
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// DWORD bfSize; |
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// WORD bfReserved1; |
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// WORD bfReserved2; |
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// DWORD bfOffBits; |
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$offset = 0; |
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$overalloffset = 0; |
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$BMPheader = substr($BMPdata, $overalloffset, 14 + 40); |
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$overalloffset += (14 + 40); |
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$thisfile_bmp_header_raw['identifier'] = substr($BMPheader, $offset, 2); |
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$offset += 2; |
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if ($thisfile_bmp_header_raw['identifier'] != 'BM') { |
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$ThisFileInfo['error'][] = 'Expecting "BM" at offset ' . (int)(@$ThisFileInfo['avdataoffset']) . ', found "' . $thisfile_bmp_header_raw['identifier'] . '"'; |
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unset($ThisFileInfo['fileformat']); |
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unset($ThisFileInfo['bmp']); |
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return false; |
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} |
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$thisfile_bmp_header_raw['filesize'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4)); |
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$offset += 4; |
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$thisfile_bmp_header_raw['reserved1'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 2)); |
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$offset += 2; |
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$thisfile_bmp_header_raw['reserved2'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 2)); |
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$offset += 2; |
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$thisfile_bmp_header_raw['data_offset'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4)); |
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$offset += 4; |
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$thisfile_bmp_header_raw['header_size'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4)); |
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$offset += 4; |
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// check if the hardcoded-to-1 "planes" is at offset 22 or 26 |
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$planes22 = $this->LittleEndian2Int(substr($BMPheader, 22, 2)); |
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$planes26 = $this->LittleEndian2Int(substr($BMPheader, 26, 2)); |
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if (($planes22 == 1) && ($planes26 != 1)) { |
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$thisfile_bmp['type_os'] = 'OS/2'; |
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$thisfile_bmp['type_version'] = 1; |
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} elseif (($planes26 == 1) && ($planes22 != 1)) { |
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$thisfile_bmp['type_os'] = 'Windows'; |
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$thisfile_bmp['type_version'] = 1; |
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View Code Duplication |
} elseif ($thisfile_bmp_header_raw['header_size'] == 12) { |
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$thisfile_bmp['type_os'] = 'OS/2'; |
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$thisfile_bmp['type_version'] = 1; |
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} elseif ($thisfile_bmp_header_raw['header_size'] == 40) { |
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$thisfile_bmp['type_os'] = 'Windows'; |
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$thisfile_bmp['type_version'] = 1; |
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View Code Duplication |
} elseif ($thisfile_bmp_header_raw['header_size'] == 84) { |
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$thisfile_bmp['type_os'] = 'Windows'; |
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$thisfile_bmp['type_version'] = 4; |
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} elseif ($thisfile_bmp_header_raw['header_size'] == 100) { |
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$thisfile_bmp['type_os'] = 'Windows'; |
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$thisfile_bmp['type_version'] = 5; |
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} else { |
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$ThisFileInfo['error'][] = 'Unknown BMP subtype (or not a BMP file)'; |
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unset($ThisFileInfo['fileformat']); |
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unset($ThisFileInfo['bmp']); |
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return false; |
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} |
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$ThisFileInfo['fileformat'] = 'bmp'; |
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$ThisFileInfo['video']['dataformat'] = 'bmp'; |
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$ThisFileInfo['video']['lossless'] = true; |
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$ThisFileInfo['video']['pixel_aspect_ratio'] = (float)1; |
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if ($thisfile_bmp['type_os'] == 'OS/2') { |
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// OS/2-format BMP |
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// http://netghost.narod.ru/gff/graphics/summary/os2bmp.htm |
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// DWORD Size; /* Size of this structure in bytes */ |
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// DWORD Width; /* Bitmap width in pixels */ |
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// DWORD Height; /* Bitmap height in pixel */ |
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// WORD NumPlanes; /* Number of bit planes (color depth) */ |
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// WORD BitsPerPixel; /* Number of bits per pixel per plane */ |
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$thisfile_bmp_header_raw['width'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 2)); |
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$offset += 2; |
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$thisfile_bmp_header_raw['height'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 2)); |
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$offset += 2; |
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$thisfile_bmp_header_raw['planes'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 2)); |
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$offset += 2; |
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$thisfile_bmp_header_raw['bits_per_pixel'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 2)); |
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$offset += 2; |
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$ThisFileInfo['video']['resolution_x'] = $thisfile_bmp_header_raw['width']; |
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$ThisFileInfo['video']['resolution_y'] = $thisfile_bmp_header_raw['height']; |
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$ThisFileInfo['video']['codec'] = 'BI_RGB ' . $thisfile_bmp_header_raw['bits_per_pixel'] . '-bit'; |
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$ThisFileInfo['video']['bits_per_sample'] = $thisfile_bmp_header_raw['bits_per_pixel']; |
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if ($thisfile_bmp['type_version'] >= 2) { |
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// DWORD Compression; /* Bitmap compression scheme */ |
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// DWORD ImageDataSize; /* Size of bitmap data in bytes */ |
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// DWORD XResolution; /* X resolution of display device */ |
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// DWORD YResolution; /* Y resolution of display device */ |
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// DWORD ColorsUsed; /* Number of color table indices used */ |
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227
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// DWORD ColorsImportant; /* Number of important color indices */ |
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// WORD Units; /* Type of units used to measure resolution */ |
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229
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// WORD Reserved; /* Pad structure to 4-byte boundary */ |
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// WORD Recording; /* Recording algorithm */ |
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// WORD Rendering; /* Halftoning algorithm used */ |
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// DWORD Size1; /* Reserved for halftoning algorithm use */ |
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// DWORD Size2; /* Reserved for halftoning algorithm use */ |
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// DWORD ColorEncoding; /* Color model used in bitmap */ |
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// DWORD Identifier; /* Reserved for application use */ |
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237
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$thisfile_bmp_header_raw['compression'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4)); |
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$offset += 4; |
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$thisfile_bmp_header_raw['bmp_data_size'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4)); |
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$offset += 4; |
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$thisfile_bmp_header_raw['resolution_h'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4)); |
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$offset += 4; |
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$thisfile_bmp_header_raw['resolution_v'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4)); |
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$offset += 4; |
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$thisfile_bmp_header_raw['colors_used'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4)); |
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$offset += 4; |
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$thisfile_bmp_header_raw['colors_important'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4)); |
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$offset += 4; |
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$thisfile_bmp_header_raw['resolution_units'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 2)); |
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$offset += 2; |
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$thisfile_bmp_header_raw['reserved1'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 2)); |
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$offset += 2; |
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$thisfile_bmp_header_raw['recording'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 2)); |
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$offset += 2; |
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$thisfile_bmp_header_raw['rendering'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 2)); |
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$offset += 2; |
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$thisfile_bmp_header_raw['size1'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4)); |
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$offset += 4; |
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$thisfile_bmp_header_raw['size2'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4)); |
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$offset += 4; |
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$thisfile_bmp_header_raw['color_encoding'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4)); |
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$offset += 4; |
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$thisfile_bmp_header_raw['identifier'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4)); |
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$offset += 4; |
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266
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$thisfile_bmp_header['compression'] = $this->BMPcompressionOS2Lookup($thisfile_bmp_header_raw['compression']); |
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268
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|
|
$ThisFileInfo['video']['codec'] = $thisfile_bmp_header['compression'] . ' ' . $thisfile_bmp_header_raw['bits_per_pixel'] . '-bit'; |
|
269
|
|
|
} |
|
270
|
|
|
} elseif ($thisfile_bmp['type_os'] == 'Windows') { |
|
271
|
|
|
|
|
272
|
|
|
// Windows-format BMP |
|
273
|
|
|
|
|
274
|
|
|
// BITMAPINFOHEADER - [40 bytes] http://msdn.microsoft.com/library/en-us/gdi/bitmaps_1rw2.asp |
|
275
|
|
|
// all versions |
|
276
|
|
|
// DWORD biSize; |
|
277
|
|
|
// LONG biWidth; |
|
278
|
|
|
// LONG biHeight; |
|
279
|
|
|
// WORD biPlanes; |
|
280
|
|
|
// WORD biBitCount; |
|
281
|
|
|
// DWORD biCompression; |
|
282
|
|
|
// DWORD biSizeImage; |
|
283
|
|
|
// LONG biXPelsPerMeter; |
|
284
|
|
|
// LONG biYPelsPerMeter; |
|
285
|
|
|
// DWORD biClrUsed; |
|
286
|
|
|
// DWORD biClrImportant; |
|
287
|
|
|
|
|
288
|
|
|
$thisfile_bmp_header_raw['width'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4), true); |
|
289
|
|
|
$offset += 4; |
|
290
|
|
|
$thisfile_bmp_header_raw['height'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4), true); |
|
291
|
|
|
$offset += 4; |
|
292
|
|
|
$thisfile_bmp_header_raw['planes'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 2)); |
|
293
|
|
|
$offset += 2; |
|
294
|
|
|
$thisfile_bmp_header_raw['bits_per_pixel'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 2)); |
|
295
|
|
|
$offset += 2; |
|
296
|
|
|
$thisfile_bmp_header_raw['compression'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4)); |
|
297
|
|
|
$offset += 4; |
|
298
|
|
|
$thisfile_bmp_header_raw['bmp_data_size'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4)); |
|
299
|
|
|
$offset += 4; |
|
300
|
|
|
$thisfile_bmp_header_raw['resolution_h'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4), true); |
|
301
|
|
|
$offset += 4; |
|
302
|
|
|
$thisfile_bmp_header_raw['resolution_v'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4), true); |
|
303
|
|
|
$offset += 4; |
|
304
|
|
|
$thisfile_bmp_header_raw['colors_used'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4)); |
|
305
|
|
|
$offset += 4; |
|
306
|
|
|
$thisfile_bmp_header_raw['colors_important'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4)); |
|
307
|
|
|
$offset += 4; |
|
308
|
|
|
|
|
309
|
|
|
$thisfile_bmp_header['compression'] = $this->BMPcompressionWindowsLookup($thisfile_bmp_header_raw['compression']); |
|
310
|
|
|
$ThisFileInfo['video']['resolution_x'] = $thisfile_bmp_header_raw['width']; |
|
311
|
|
|
$ThisFileInfo['video']['resolution_y'] = $thisfile_bmp_header_raw['height']; |
|
312
|
|
|
$ThisFileInfo['video']['codec'] = $thisfile_bmp_header['compression'] . ' ' . $thisfile_bmp_header_raw['bits_per_pixel'] . '-bit'; |
|
313
|
|
|
$ThisFileInfo['video']['bits_per_sample'] = $thisfile_bmp_header_raw['bits_per_pixel']; |
|
314
|
|
|
|
|
315
|
|
|
if (($thisfile_bmp['type_version'] >= 4) || ($thisfile_bmp_header_raw['compression'] == 3)) { |
|
316
|
|
|
// should only be v4+, but BMPs with type_version==1 and BI_BITFIELDS compression have been seen |
|
317
|
|
|
$BMPheader .= substr($BMPdata, $overalloffset, 44); |
|
318
|
|
|
$overalloffset += 44; |
|
319
|
|
|
|
|
320
|
|
|
// BITMAPV4HEADER - [44 bytes] - http://msdn.microsoft.com/library/en-us/gdi/bitmaps_2k1e.asp |
|
321
|
|
|
// Win95+, WinNT4.0+ |
|
322
|
|
|
// DWORD bV4RedMask; |
|
323
|
|
|
// DWORD bV4GreenMask; |
|
324
|
|
|
// DWORD bV4BlueMask; |
|
325
|
|
|
// DWORD bV4AlphaMask; |
|
326
|
|
|
// DWORD bV4CSType; |
|
327
|
|
|
// CIEXYZTRIPLE bV4Endpoints; |
|
328
|
|
|
// DWORD bV4GammaRed; |
|
329
|
|
|
// DWORD bV4GammaGreen; |
|
330
|
|
|
// DWORD bV4GammaBlue; |
|
331
|
|
|
$thisfile_bmp_header_raw['red_mask'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4)); |
|
332
|
|
|
$offset += 4; |
|
333
|
|
|
$thisfile_bmp_header_raw['green_mask'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4)); |
|
334
|
|
|
$offset += 4; |
|
335
|
|
|
$thisfile_bmp_header_raw['blue_mask'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4)); |
|
336
|
|
|
$offset += 4; |
|
337
|
|
|
$thisfile_bmp_header_raw['alpha_mask'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4)); |
|
338
|
|
|
$offset += 4; |
|
339
|
|
|
$thisfile_bmp_header_raw['cs_type'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4)); |
|
340
|
|
|
$offset += 4; |
|
341
|
|
|
$thisfile_bmp_header_raw['ciexyz_red'] = substr($BMPheader, $offset, 4); |
|
342
|
|
|
$offset += 4; |
|
343
|
|
|
$thisfile_bmp_header_raw['ciexyz_green'] = substr($BMPheader, $offset, 4); |
|
344
|
|
|
$offset += 4; |
|
345
|
|
|
$thisfile_bmp_header_raw['ciexyz_blue'] = substr($BMPheader, $offset, 4); |
|
346
|
|
|
$offset += 4; |
|
347
|
|
|
$thisfile_bmp_header_raw['gamma_red'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4)); |
|
348
|
|
|
$offset += 4; |
|
349
|
|
|
$thisfile_bmp_header_raw['gamma_green'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4)); |
|
350
|
|
|
$offset += 4; |
|
351
|
|
|
$thisfile_bmp_header_raw['gamma_blue'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4)); |
|
352
|
|
|
$offset += 4; |
|
353
|
|
|
|
|
354
|
|
|
$thisfile_bmp_header['ciexyz_red'] = $this->FixedPoint2_30(strrev($thisfile_bmp_header_raw['ciexyz_red'])); |
|
355
|
|
|
$thisfile_bmp_header['ciexyz_green'] = $this->FixedPoint2_30(strrev($thisfile_bmp_header_raw['ciexyz_green'])); |
|
356
|
|
|
$thisfile_bmp_header['ciexyz_blue'] = $this->FixedPoint2_30(strrev($thisfile_bmp_header_raw['ciexyz_blue'])); |
|
357
|
|
|
} |
|
358
|
|
|
|
|
359
|
|
|
if ($thisfile_bmp['type_version'] >= 5) { |
|
360
|
|
|
$BMPheader .= substr($BMPdata, $overalloffset, 16); |
|
361
|
|
|
$overalloffset += 16; |
|
362
|
|
|
|
|
363
|
|
|
// BITMAPV5HEADER - [16 bytes] - http://msdn.microsoft.com/library/en-us/gdi/bitmaps_7c36.asp |
|
364
|
|
|
// Win98+, Win2000+ |
|
365
|
|
|
// DWORD bV5Intent; |
|
366
|
|
|
// DWORD bV5ProfileData; |
|
367
|
|
|
// DWORD bV5ProfileSize; |
|
368
|
|
|
// DWORD bV5Reserved; |
|
369
|
|
|
$thisfile_bmp_header_raw['intent'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4)); |
|
370
|
|
|
$offset += 4; |
|
371
|
|
|
$thisfile_bmp_header_raw['profile_data_offset'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4)); |
|
372
|
|
|
$offset += 4; |
|
373
|
|
|
$thisfile_bmp_header_raw['profile_data_size'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4)); |
|
374
|
|
|
$offset += 4; |
|
375
|
|
|
$thisfile_bmp_header_raw['reserved3'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4)); |
|
376
|
|
|
$offset += 4; |
|
377
|
|
|
} |
|
378
|
|
|
} else { |
|
379
|
|
|
$ThisFileInfo['error'][] = 'Unknown BMP format in header.'; |
|
380
|
|
|
|
|
381
|
|
|
return false; |
|
382
|
|
|
} |
|
383
|
|
|
|
|
384
|
|
|
if ($ExtractPalette || $ExtractData) { |
|
385
|
|
|
$PaletteEntries = 0; |
|
386
|
|
|
if ($thisfile_bmp_header_raw['bits_per_pixel'] < 16) { |
|
387
|
|
|
$PaletteEntries = pow(2, $thisfile_bmp_header_raw['bits_per_pixel']); |
|
388
|
|
|
} elseif (isset($thisfile_bmp_header_raw['colors_used']) && ($thisfile_bmp_header_raw['colors_used'] > 0) |
|
389
|
|
|
&& ($thisfile_bmp_header_raw['colors_used'] <= 256) |
|
390
|
|
|
) { |
|
391
|
|
|
$PaletteEntries = $thisfile_bmp_header_raw['colors_used']; |
|
392
|
|
|
} |
|
393
|
|
|
if ($PaletteEntries > 0) { |
|
394
|
|
|
$BMPpalette = substr($BMPdata, $overalloffset, 4 * $PaletteEntries); |
|
395
|
|
|
$overalloffset += 4 * $PaletteEntries; |
|
396
|
|
|
|
|
397
|
|
|
$paletteoffset = 0; |
|
398
|
|
|
for ($i = 0; $i < $PaletteEntries; $i++) { |
|
399
|
|
|
// RGBQUAD - http://msdn.microsoft.com/library/en-us/gdi/bitmaps_5f8y.asp |
|
400
|
|
|
// BYTE rgbBlue; |
|
401
|
|
|
// BYTE rgbGreen; |
|
402
|
|
|
// BYTE rgbRed; |
|
403
|
|
|
// BYTE rgbReserved; |
|
404
|
|
|
$blue = $this->LittleEndian2Int(substr($BMPpalette, $paletteoffset++, 1)); |
|
405
|
|
|
$green = $this->LittleEndian2Int(substr($BMPpalette, $paletteoffset++, 1)); |
|
406
|
|
|
$red = $this->LittleEndian2Int(substr($BMPpalette, $paletteoffset++, 1)); |
|
407
|
|
|
if (($thisfile_bmp['type_os'] == 'OS/2') && ($thisfile_bmp['type_version'] == 1)) { |
|
408
|
|
|
// no padding byte |
|
409
|
|
|
} else { |
|
410
|
|
|
$paletteoffset++; // padding byte |
|
411
|
|
|
} |
|
412
|
|
|
$thisfile_bmp['palette'][$i] = (($red << 16) | ($green << 8) | $blue); |
|
413
|
|
|
} |
|
414
|
|
|
} |
|
415
|
|
|
} |
|
416
|
|
|
|
|
417
|
|
|
if ($ExtractData) { |
|
418
|
|
|
$RowByteLength = ceil(($thisfile_bmp_header_raw['width'] * ($thisfile_bmp_header_raw['bits_per_pixel'] / 8)) / 4) * 4; // round up to nearest DWORD boundry |
|
419
|
|
|
|
|
420
|
|
|
$BMPpixelData = substr($BMPdata, $thisfile_bmp_header_raw['data_offset'], $thisfile_bmp_header_raw['height'] * $RowByteLength); |
|
421
|
|
|
$overalloffset = $thisfile_bmp_header_raw['data_offset'] + ($thisfile_bmp_header_raw['height'] * $RowByteLength); |
|
422
|
|
|
|
|
423
|
|
|
$pixeldataoffset = 0; |
|
424
|
|
|
switch (@$thisfile_bmp_header_raw['compression']) { |
|
425
|
|
|
|
|
426
|
|
|
case 0: // BI_RGB |
|
427
|
|
|
switch ($thisfile_bmp_header_raw['bits_per_pixel']) { |
|
428
|
|
View Code Duplication |
case 1: |
|
429
|
|
|
for ($row = ($thisfile_bmp_header_raw['height'] - 1); $row >= 0; $row--) { |
|
430
|
|
|
for ($col = 0; $col < $thisfile_bmp_header_raw['width']; $col = $col) { |
|
431
|
|
|
$paletteindexbyte = ord($BMPpixelData{$pixeldataoffset++}); |
|
432
|
|
|
for ($i = 7; $i >= 0; $i--) { |
|
433
|
|
|
$paletteindex = ($paletteindexbyte & (0x01 << $i)) >> $i; |
|
434
|
|
|
$thisfile_bmp['data'][$row][$col] = $thisfile_bmp['palette'][$paletteindex]; |
|
435
|
|
|
$col++; |
|
436
|
|
|
} |
|
437
|
|
|
} |
|
438
|
|
|
while (($pixeldataoffset % 4) != 0) { |
|
439
|
|
|
// lines are padded to nearest DWORD |
|
440
|
|
|
$pixeldataoffset++; |
|
441
|
|
|
} |
|
442
|
|
|
} |
|
443
|
|
|
break; |
|
444
|
|
|
|
|
445
|
|
View Code Duplication |
case 4: |
|
446
|
|
|
for ($row = ($thisfile_bmp_header_raw['height'] - 1); $row >= 0; $row--) { |
|
447
|
|
|
for ($col = 0; $col < $thisfile_bmp_header_raw['width']; $col = $col) { |
|
448
|
|
|
$paletteindexbyte = ord($BMPpixelData{$pixeldataoffset++}); |
|
449
|
|
|
for ($i = 1; $i >= 0; $i--) { |
|
450
|
|
|
$paletteindex = ($paletteindexbyte & (0x0F << (4 * $i))) >> (4 * $i); |
|
451
|
|
|
$thisfile_bmp['data'][$row][$col] = $thisfile_bmp['palette'][$paletteindex]; |
|
452
|
|
|
$col++; |
|
453
|
|
|
} |
|
454
|
|
|
} |
|
455
|
|
|
while (($pixeldataoffset % 4) != 0) { |
|
456
|
|
|
// lines are padded to nearest DWORD |
|
457
|
|
|
$pixeldataoffset++; |
|
458
|
|
|
} |
|
459
|
|
|
} |
|
460
|
|
|
break; |
|
461
|
|
|
|
|
462
|
|
|
case 8: |
|
463
|
|
|
for ($row = ($thisfile_bmp_header_raw['height'] - 1); $row >= 0; $row--) { |
|
464
|
|
|
for ($col = 0; $col < $thisfile_bmp_header_raw['width']; $col++) { |
|
465
|
|
|
$paletteindex = ord($BMPpixelData{$pixeldataoffset++}); |
|
466
|
|
|
$thisfile_bmp['data'][$row][$col] = $thisfile_bmp['palette'][$paletteindex]; |
|
467
|
|
|
} |
|
468
|
|
|
while (($pixeldataoffset % 4) != 0) { |
|
469
|
|
|
// lines are padded to nearest DWORD |
|
470
|
|
|
$pixeldataoffset++; |
|
471
|
|
|
} |
|
472
|
|
|
} |
|
473
|
|
|
break; |
|
474
|
|
|
|
|
475
|
|
|
case 24: |
|
476
|
|
|
for ($row = ($thisfile_bmp_header_raw['height'] - 1); $row >= 0; $row--) { |
|
477
|
|
|
for ($col = 0; $col < $thisfile_bmp_header_raw['width']; $col++) { |
|
478
|
|
|
$thisfile_bmp['data'][$row][$col] = (ord($BMPpixelData{$pixeldataoffset + 2}) << 16) |
|
479
|
|
|
| (ord($BMPpixelData{$pixeldataoffset + 1}) << 8) |
|
480
|
|
|
| ord($BMPpixelData{$pixeldataoffset}); |
|
481
|
|
|
$pixeldataoffset += 3; |
|
482
|
|
|
} |
|
483
|
|
|
while (($pixeldataoffset % 4) != 0) { |
|
484
|
|
|
// lines are padded to nearest DWORD |
|
485
|
|
|
$pixeldataoffset++; |
|
486
|
|
|
} |
|
487
|
|
|
} |
|
488
|
|
|
break; |
|
489
|
|
|
|
|
490
|
|
|
case 32: |
|
491
|
|
|
for ($row = ($thisfile_bmp_header_raw['height'] - 1); $row >= 0; $row--) { |
|
492
|
|
|
for ($col = 0; $col < $thisfile_bmp_header_raw['width']; $col++) { |
|
493
|
|
|
$thisfile_bmp['data'][$row][$col] = (ord($BMPpixelData{$pixeldataoffset + 3}) << 24) |
|
494
|
|
|
| (ord($BMPpixelData{$pixeldataoffset + 2}) << 16) |
|
495
|
|
|
| (ord($BMPpixelData{$pixeldataoffset + 1}) << 8) |
|
496
|
|
|
| ord($BMPpixelData{$pixeldataoffset}); |
|
497
|
|
|
$pixeldataoffset += 4; |
|
498
|
|
|
} |
|
499
|
|
|
while (($pixeldataoffset % 4) != 0) { |
|
500
|
|
|
// lines are padded to nearest DWORD |
|
501
|
|
|
$pixeldataoffset++; |
|
502
|
|
|
} |
|
503
|
|
|
} |
|
504
|
|
|
break; |
|
505
|
|
|
|
|
506
|
|
|
case 16: |
|
507
|
|
|
// ? |
|
508
|
|
|
break; |
|
509
|
|
|
|
|
510
|
|
|
default: |
|
511
|
|
|
$ThisFileInfo['error'][] = 'Unknown bits-per-pixel value (' . $thisfile_bmp_header_raw['bits_per_pixel'] . ') - cannot read pixel data'; |
|
512
|
|
|
break; |
|
513
|
|
|
} |
|
514
|
|
|
break; |
|
515
|
|
|
|
|
516
|
|
|
case 1: // BI_RLE8 - http://msdn.microsoft.com/library/en-us/gdi/bitmaps_6x0u.asp |
|
517
|
|
|
switch ($thisfile_bmp_header_raw['bits_per_pixel']) { |
|
518
|
|
|
case 8: |
|
519
|
|
|
$pixelcounter = 0; |
|
520
|
|
|
while ($pixeldataoffset < strlen($BMPpixelData)) { |
|
521
|
|
|
$firstbyte = $this->LittleEndian2Int(substr($BMPpixelData, $pixeldataoffset++, 1)); |
|
522
|
|
|
$secondbyte = $this->LittleEndian2Int(substr($BMPpixelData, $pixeldataoffset++, 1)); |
|
523
|
|
|
if ($firstbyte == 0) { |
|
524
|
|
|
|
|
525
|
|
|
// escaped/absolute mode - the first byte of the pair can be set to zero to |
|
526
|
|
|
// indicate an escape character that denotes the end of a line, the end of |
|
527
|
|
|
// a bitmap, or a delta, depending on the value of the second byte. |
|
528
|
|
|
switch ($secondbyte) { |
|
529
|
|
|
case 0: |
|
530
|
|
|
// end of line |
|
531
|
|
|
// no need for special processing, just ignore |
|
532
|
|
|
break; |
|
533
|
|
|
|
|
534
|
|
|
case 1: |
|
535
|
|
|
// end of bitmap |
|
536
|
|
|
$pixeldataoffset = strlen($BMPpixelData); // force to exit loop just in case |
|
537
|
|
|
break; |
|
538
|
|
|
|
|
539
|
|
View Code Duplication |
case 2: |
|
540
|
|
|
// delta - The 2 bytes following the escape contain unsigned values |
|
541
|
|
|
// indicating the horizontal and vertical offsets of the next pixel |
|
542
|
|
|
// from the current position. |
|
543
|
|
|
$colincrement = $this->LittleEndian2Int(substr($BMPpixelData, $pixeldataoffset++, 1)); |
|
544
|
|
|
$rowincrement = $this->LittleEndian2Int(substr($BMPpixelData, $pixeldataoffset++, 1)); |
|
545
|
|
|
$col = ($pixelcounter % $thisfile_bmp_header_raw['width']) + $colincrement; |
|
546
|
|
|
$row = ($thisfile_bmp_header_raw['height'] - 1 - (($pixelcounter - $col) / $thisfile_bmp_header_raw['width'])) - $rowincrement; |
|
547
|
|
|
$pixelcounter = ($row * $thisfile_bmp_header_raw['width']) + $col; |
|
548
|
|
|
break; |
|
549
|
|
|
|
|
550
|
|
|
default: |
|
551
|
|
|
// In absolute mode, the first byte is zero and the second byte is a |
|
552
|
|
|
// value in the range 03H through FFH. The second byte represents the |
|
553
|
|
|
// number of bytes that follow, each of which contains the color index |
|
554
|
|
|
// of a single pixel. Each run must be aligned on a word boundary. |
|
555
|
|
|
for ($i = 0; $i < $secondbyte; $i++) { |
|
556
|
|
|
$paletteindex = $this->LittleEndian2Int(substr($BMPpixelData, $pixeldataoffset++, 1)); |
|
557
|
|
|
$col = $pixelcounter % $thisfile_bmp_header_raw['width']; |
|
558
|
|
|
$row = $thisfile_bmp_header_raw['height'] - 1 - (($pixelcounter - $col) / $thisfile_bmp_header_raw['width']); |
|
559
|
|
|
$thisfile_bmp['data'][$row][$col] = $thisfile_bmp['palette'][$paletteindex]; |
|
560
|
|
|
$pixelcounter++; |
|
561
|
|
|
} |
|
562
|
|
|
while (($pixeldataoffset % 2) != 0) { |
|
563
|
|
|
// Each run must be aligned on a word boundary. |
|
564
|
|
|
$pixeldataoffset++; |
|
565
|
|
|
} |
|
566
|
|
|
break; |
|
567
|
|
|
} |
|
568
|
|
|
} else { |
|
569
|
|
|
|
|
570
|
|
|
// encoded mode - the first byte specifies the number of consecutive pixels |
|
571
|
|
|
// to be drawn using the color index contained in the second byte. |
|
572
|
|
View Code Duplication |
for ($i = 0; $i < $firstbyte; $i++) { |
|
573
|
|
|
$col = $pixelcounter % $thisfile_bmp_header_raw['width']; |
|
574
|
|
|
$row = $thisfile_bmp_header_raw['height'] - 1 - (($pixelcounter - $col) / $thisfile_bmp_header_raw['width']); |
|
575
|
|
|
$thisfile_bmp['data'][$row][$col] = $thisfile_bmp['palette'][$secondbyte]; |
|
576
|
|
|
$pixelcounter++; |
|
577
|
|
|
} |
|
578
|
|
|
} |
|
579
|
|
|
} |
|
580
|
|
|
break; |
|
581
|
|
|
|
|
582
|
|
|
default: |
|
583
|
|
|
$ThisFileInfo['error'][] = 'Unknown bits-per-pixel value (' . $thisfile_bmp_header_raw['bits_per_pixel'] . ') - cannot read pixel data'; |
|
584
|
|
|
break; |
|
585
|
|
|
} |
|
586
|
|
|
break; |
|
587
|
|
|
|
|
588
|
|
|
case 2: // BI_RLE4 - http://msdn.microsoft.com/library/en-us/gdi/bitmaps_6x0u.asp |
|
589
|
|
|
switch ($thisfile_bmp_header_raw['bits_per_pixel']) { |
|
590
|
|
|
case 4: |
|
591
|
|
|
$pixelcounter = 0; |
|
592
|
|
|
while ($pixeldataoffset < strlen($BMPpixelData)) { |
|
593
|
|
|
$firstbyte = $this->LittleEndian2Int(substr($BMPpixelData, $pixeldataoffset++, 1)); |
|
594
|
|
|
$secondbyte = $this->LittleEndian2Int(substr($BMPpixelData, $pixeldataoffset++, 1)); |
|
595
|
|
|
if ($firstbyte == 0) { |
|
596
|
|
|
|
|
597
|
|
|
// escaped/absolute mode - the first byte of the pair can be set to zero to |
|
598
|
|
|
// indicate an escape character that denotes the end of a line, the end of |
|
599
|
|
|
// a bitmap, or a delta, depending on the value of the second byte. |
|
600
|
|
|
switch ($secondbyte) { |
|
601
|
|
|
case 0: |
|
602
|
|
|
// end of line |
|
603
|
|
|
// no need for special processing, just ignore |
|
604
|
|
|
break; |
|
605
|
|
|
|
|
606
|
|
|
case 1: |
|
607
|
|
|
// end of bitmap |
|
608
|
|
|
$pixeldataoffset = strlen($BMPpixelData); // force to exit loop just in case |
|
609
|
|
|
break; |
|
610
|
|
|
|
|
611
|
|
View Code Duplication |
case 2: |
|
612
|
|
|
// delta - The 2 bytes following the escape contain unsigned values |
|
613
|
|
|
// indicating the horizontal and vertical offsets of the next pixel |
|
614
|
|
|
// from the current position. |
|
615
|
|
|
$colincrement = $this->LittleEndian2Int(substr($BMPpixelData, $pixeldataoffset++, 1)); |
|
616
|
|
|
$rowincrement = $this->LittleEndian2Int(substr($BMPpixelData, $pixeldataoffset++, 1)); |
|
617
|
|
|
$col = ($pixelcounter % $thisfile_bmp_header_raw['width']) + $colincrement; |
|
618
|
|
|
$row = ($thisfile_bmp_header_raw['height'] - 1 - (($pixelcounter - $col) / $thisfile_bmp_header_raw['width'])) - $rowincrement; |
|
619
|
|
|
$pixelcounter = ($row * $thisfile_bmp_header_raw['width']) + $col; |
|
620
|
|
|
break; |
|
621
|
|
|
|
|
622
|
|
|
default: |
|
623
|
|
|
// In absolute mode, the first byte is zero. The second byte contains the number |
|
624
|
|
|
// of color indexes that follow. Subsequent bytes contain color indexes in their |
|
625
|
|
|
// high- and low-order 4 bits, one color index for each pixel. In absolute mode, |
|
626
|
|
|
// each run must be aligned on a word boundary. |
|
627
|
|
|
unset($paletteindexes); |
|
628
|
|
|
for ($i = 0; $i < ceil($secondbyte / 2); $i++) { |
|
629
|
|
|
$paletteindexbyte = $this->LittleEndian2Int(substr($BMPpixelData, $pixeldataoffset++, 1)); |
|
630
|
|
|
$paletteindexes[] = ($paletteindexbyte & 0xF0) >> 4; |
|
|
|
|
|
|
631
|
|
|
$paletteindexes[] = ($paletteindexbyte & 0x0F); |
|
632
|
|
|
} |
|
633
|
|
|
while (($pixeldataoffset % 2) != 0) { |
|
634
|
|
|
// Each run must be aligned on a word boundary. |
|
635
|
|
|
$pixeldataoffset++; |
|
636
|
|
|
} |
|
637
|
|
|
|
|
638
|
|
|
foreach ($paletteindexes as $dummy => $paletteindex) { |
|
639
|
|
|
$col = $pixelcounter % $thisfile_bmp_header_raw['width']; |
|
640
|
|
|
$row = $thisfile_bmp_header_raw['height'] - 1 - (($pixelcounter - $col) / $thisfile_bmp_header_raw['width']); |
|
641
|
|
|
$thisfile_bmp['data'][$row][$col] = $thisfile_bmp['palette'][$paletteindex]; |
|
642
|
|
|
$pixelcounter++; |
|
643
|
|
|
} |
|
644
|
|
|
break; |
|
645
|
|
|
} |
|
646
|
|
|
} else { |
|
647
|
|
|
|
|
648
|
|
|
// encoded mode - the first byte of the pair contains the number of pixels to be |
|
649
|
|
|
// drawn using the color indexes in the second byte. The second byte contains two |
|
650
|
|
|
// color indexes, one in its high-order 4 bits and one in its low-order 4 bits. |
|
651
|
|
|
// The first of the pixels is drawn using the color specified by the high-order |
|
652
|
|
|
// 4 bits, the second is drawn using the color in the low-order 4 bits, the third |
|
653
|
|
|
// is drawn using the color in the high-order 4 bits, and so on, until all the |
|
654
|
|
|
// pixels specified by the first byte have been drawn. |
|
655
|
|
|
$paletteindexes[0] = ($secondbyte & 0xF0) >> 4; |
|
656
|
|
|
$paletteindexes[1] = ($secondbyte & 0x0F); |
|
657
|
|
View Code Duplication |
for ($i = 0; $i < $firstbyte; $i++) { |
|
658
|
|
|
$col = $pixelcounter % $thisfile_bmp_header_raw['width']; |
|
659
|
|
|
$row = $thisfile_bmp_header_raw['height'] - 1 - (($pixelcounter - $col) / $thisfile_bmp_header_raw['width']); |
|
660
|
|
|
$thisfile_bmp['data'][$row][$col] = $thisfile_bmp['palette'][$paletteindexes[$i % 2]]; |
|
661
|
|
|
$pixelcounter++; |
|
662
|
|
|
} |
|
663
|
|
|
} |
|
664
|
|
|
} |
|
665
|
|
|
break; |
|
666
|
|
|
|
|
667
|
|
|
default: |
|
668
|
|
|
$ThisFileInfo['error'][] = 'Unknown bits-per-pixel value (' . $thisfile_bmp_header_raw['bits_per_pixel'] . ') - cannot read pixel data'; |
|
669
|
|
|
break; |
|
670
|
|
|
} |
|
671
|
|
|
break; |
|
672
|
|
|
|
|
673
|
|
|
case 3: // BI_BITFIELDS |
|
674
|
|
|
switch ($thisfile_bmp_header_raw['bits_per_pixel']) { |
|
675
|
|
|
case 16: |
|
676
|
|
|
case 32: |
|
677
|
|
|
$redshift = 0; |
|
678
|
|
|
$greenshift = 0; |
|
679
|
|
|
$blueshift = 0; |
|
680
|
|
|
if (!$thisfile_bmp_header_raw['red_mask'] || !$thisfile_bmp_header_raw['green_mask'] |
|
681
|
|
|
|| !$thisfile_bmp_header_raw['blue_mask'] |
|
682
|
|
|
) { |
|
683
|
|
|
$ThisFileInfo['error'][] = 'missing $thisfile_bmp_header_raw[(red|green|blue)_mask]'; |
|
684
|
|
|
|
|
685
|
|
|
return false; |
|
686
|
|
|
} |
|
687
|
|
|
while ((($thisfile_bmp_header_raw['red_mask'] >> $redshift) & 0x01) == 0) { |
|
688
|
|
|
$redshift++; |
|
689
|
|
|
} |
|
690
|
|
|
while ((($thisfile_bmp_header_raw['green_mask'] >> $greenshift) & 0x01) == 0) { |
|
691
|
|
|
$greenshift++; |
|
692
|
|
|
} |
|
693
|
|
|
while ((($thisfile_bmp_header_raw['blue_mask'] >> $blueshift) & 0x01) == 0) { |
|
694
|
|
|
$blueshift++; |
|
695
|
|
|
} |
|
696
|
|
|
for ($row = ($thisfile_bmp_header_raw['height'] - 1); $row >= 0; $row--) { |
|
697
|
|
|
for ($col = 0; $col < $thisfile_bmp_header_raw['width']; $col++) { |
|
698
|
|
|
$pixelvalue = $this->LittleEndian2Int(substr($BMPpixelData, $pixeldataoffset, $thisfile_bmp_header_raw['bits_per_pixel'] / 8)); |
|
699
|
|
|
$pixeldataoffset += $thisfile_bmp_header_raw['bits_per_pixel'] / 8; |
|
700
|
|
|
|
|
701
|
|
|
$red = (int)round(((($pixelvalue & $thisfile_bmp_header_raw['red_mask']) >> $redshift) / ($thisfile_bmp_header_raw['red_mask'] |
|
702
|
|
|
>> $redshift)) * 255); |
|
703
|
|
|
$green = (int)round(((($pixelvalue & $thisfile_bmp_header_raw['green_mask']) >> $greenshift) / ($thisfile_bmp_header_raw['green_mask'] |
|
704
|
|
|
>> $greenshift)) * 255); |
|
705
|
|
|
$blue = (int)round(((($pixelvalue & $thisfile_bmp_header_raw['blue_mask']) >> $blueshift) / ($thisfile_bmp_header_raw['blue_mask'] |
|
706
|
|
|
>> $blueshift)) * 255); |
|
707
|
|
|
$thisfile_bmp['data'][$row][$col] = (($red << 16) | ($green << 8) | $blue); |
|
708
|
|
|
} |
|
709
|
|
|
while (($pixeldataoffset % 4) != 0) { |
|
710
|
|
|
// lines are padded to nearest DWORD |
|
711
|
|
|
$pixeldataoffset++; |
|
712
|
|
|
} |
|
713
|
|
|
} |
|
714
|
|
|
break; |
|
715
|
|
|
|
|
716
|
|
|
default: |
|
717
|
|
|
$ThisFileInfo['error'][] = 'Unknown bits-per-pixel value (' . $thisfile_bmp_header_raw['bits_per_pixel'] . ') - cannot read pixel data'; |
|
718
|
|
|
break; |
|
719
|
|
|
} |
|
720
|
|
|
break; |
|
721
|
|
|
|
|
722
|
|
|
default: // unhandled compression type |
|
723
|
|
|
$ThisFileInfo['error'][] = 'Unknown/unhandled compression type value (' . $thisfile_bmp_header_raw['compression'] . ') - cannot decompress pixel data'; |
|
724
|
|
|
break; |
|
725
|
|
|
} |
|
726
|
|
|
} |
|
727
|
|
|
|
|
728
|
|
|
return true; |
|
729
|
|
|
} |
|
730
|
|
|
|
|
731
|
|
|
/** |
|
732
|
|
|
* @param $color |
|
733
|
|
|
* @return array |
|
734
|
|
|
*/ |
|
735
|
|
|
public function IntColor2RGB($color) |
|
736
|
|
|
{ |
|
737
|
|
|
$red = ($color & 0x00FF0000) >> 16; |
|
738
|
|
|
$green = ($color & 0x0000FF00) >> 8; |
|
739
|
|
|
$blue = ($color & 0x000000FF); |
|
740
|
|
|
|
|
741
|
|
|
return array($red, $green, $blue); |
|
742
|
|
|
} |
|
743
|
|
|
|
|
744
|
|
|
/** |
|
745
|
|
|
* @param $BMPdata |
|
746
|
|
|
* @param bool $truecolor |
|
747
|
|
|
* @return bool|resource |
|
748
|
|
|
*/ |
|
749
|
|
|
public function PlotPixelsGD(&$BMPdata, $truecolor = true) |
|
750
|
|
|
{ |
|
751
|
|
|
$imagewidth = $BMPdata['header']['raw']['width']; |
|
752
|
|
|
$imageheight = $BMPdata['header']['raw']['height']; |
|
753
|
|
|
|
|
754
|
|
|
if ($truecolor) { |
|
755
|
|
|
$gd = @imagecreatetruecolor($imagewidth, $imageheight); |
|
756
|
|
|
} else { |
|
757
|
|
|
$gd = @imagecreate($imagewidth, $imageheight); |
|
758
|
|
|
if (!empty($BMPdata['palette'])) { |
|
759
|
|
|
// create GD palette from BMP palette |
|
760
|
|
|
foreach ($BMPdata['palette'] as $dummy => $color) { |
|
761
|
|
|
list($r, $g, $b) = $this->IntColor2RGB($color); |
|
762
|
|
|
imagecolorallocate($gd, $r, $g, $b); |
|
763
|
|
|
} |
|
764
|
|
|
} else { |
|
765
|
|
|
// create 216-color websafe palette |
|
766
|
|
|
for ($r = 0x00; $r <= 0xFF; $r += 0x33) { |
|
767
|
|
|
for ($g = 0x00; $g <= 0xFF; $g += 0x33) { |
|
768
|
|
|
for ($b = 0x00; $b <= 0xFF; $b += 0x33) { |
|
769
|
|
|
imagecolorallocate($gd, $r, $g, $b); |
|
770
|
|
|
} |
|
771
|
|
|
} |
|
772
|
|
|
} |
|
773
|
|
|
} |
|
774
|
|
|
} |
|
775
|
|
|
if (!is_resource($gd)) { |
|
776
|
|
|
return false; |
|
777
|
|
|
} |
|
778
|
|
|
|
|
779
|
|
|
foreach ($BMPdata['data'] as $row => $colarray) { |
|
780
|
|
|
if (!phpthumb_functions::FunctionIsDisabled('set_time_limit')) { |
|
781
|
|
|
set_time_limit(30); |
|
782
|
|
|
} |
|
783
|
|
|
foreach ($colarray as $col => $color) { |
|
784
|
|
|
list($red, $green, $blue) = $this->IntColor2RGB($color); |
|
785
|
|
|
if ($truecolor) { |
|
786
|
|
|
$pixelcolor = imagecolorallocate($gd, $red, $green, $blue); |
|
787
|
|
|
} else { |
|
788
|
|
|
$pixelcolor = imagecolorclosest($gd, $red, $green, $blue); |
|
789
|
|
|
} |
|
790
|
|
|
imagesetpixel($gd, $col, $row, $pixelcolor); |
|
791
|
|
|
} |
|
792
|
|
|
} |
|
793
|
|
|
|
|
794
|
|
|
return $gd; |
|
795
|
|
|
} |
|
796
|
|
|
|
|
797
|
|
|
/** |
|
798
|
|
|
* @param $BMPinfo |
|
799
|
|
|
* @return bool |
|
800
|
|
|
*/ |
|
801
|
|
|
public function PlotBMP(&$BMPinfo) |
|
802
|
|
|
{ |
|
803
|
|
|
$starttime = time(); |
|
804
|
|
|
if (!isset($BMPinfo['bmp']['data']) || !is_array($BMPinfo['bmp']['data'])) { |
|
805
|
|
|
echo 'ERROR: no pixel data<br>'; |
|
806
|
|
|
|
|
807
|
|
|
return false; |
|
808
|
|
|
} |
|
809
|
|
|
if (!phpthumb_functions::FunctionIsDisabled('set_time_limit')) { |
|
810
|
|
|
set_time_limit((int)round($BMPinfo['resolution_x'] * $BMPinfo['resolution_y'] / 10000)); |
|
811
|
|
|
} |
|
812
|
|
|
$im = $this->PlotPixelsGD($BMPinfo['bmp']); |
|
813
|
|
|
if (headers_sent()) { |
|
814
|
|
|
echo 'plotted ' . ($BMPinfo['resolution_x'] * $BMPinfo['resolution_y']) . ' pixels in ' . (time() - $starttime) . ' seconds<br>'; |
|
815
|
|
|
imagedestroy($im); |
|
816
|
|
|
exit; |
|
817
|
|
|
} else { |
|
818
|
|
|
header('Content-Type: image/png'); |
|
819
|
|
|
imagepng($im); |
|
820
|
|
|
imagedestroy($im); |
|
821
|
|
|
|
|
822
|
|
|
return true; |
|
823
|
|
|
} |
|
824
|
|
|
|
|
825
|
|
|
return false; |
|
826
|
|
|
} |
|
827
|
|
|
|
|
828
|
|
|
/** |
|
829
|
|
|
* @param $compressionid |
|
830
|
|
|
* @return mixed|string |
|
831
|
|
|
*/ |
|
832
|
|
View Code Duplication |
public function BMPcompressionWindowsLookup($compressionid) |
|
833
|
|
|
{ |
|
834
|
|
|
static $BMPcompressionWindowsLookup = array( |
|
835
|
|
|
0 => 'BI_RGB', |
|
836
|
|
|
1 => 'BI_RLE8', |
|
837
|
|
|
2 => 'BI_RLE4', |
|
838
|
|
|
3 => 'BI_BITFIELDS', |
|
839
|
|
|
4 => 'BI_JPEG', |
|
840
|
|
|
5 => 'BI_PNG' |
|
841
|
|
|
); |
|
842
|
|
|
|
|
843
|
|
|
return (isset($BMPcompressionWindowsLookup[$compressionid]) ? $BMPcompressionWindowsLookup[$compressionid] : 'invalid'); |
|
844
|
|
|
} |
|
845
|
|
|
|
|
846
|
|
|
/** |
|
847
|
|
|
* @param $compressionid |
|
848
|
|
|
* @return mixed|string |
|
849
|
|
|
*/ |
|
850
|
|
View Code Duplication |
public function BMPcompressionOS2Lookup($compressionid) |
|
851
|
|
|
{ |
|
852
|
|
|
static $BMPcompressionOS2Lookup = array( |
|
853
|
|
|
0 => 'BI_RGB', |
|
854
|
|
|
1 => 'BI_RLE8', |
|
855
|
|
|
2 => 'BI_RLE4', |
|
856
|
|
|
3 => 'Huffman 1D', |
|
857
|
|
|
4 => 'BI_RLE24' |
|
858
|
|
|
); |
|
859
|
|
|
|
|
860
|
|
|
return (isset($BMPcompressionOS2Lookup[$compressionid]) ? $BMPcompressionOS2Lookup[$compressionid] : 'invalid'); |
|
861
|
|
|
} |
|
862
|
|
|
|
|
863
|
|
|
// from getid3.lib.php |
|
864
|
|
|
|
|
865
|
|
|
/** |
|
866
|
|
|
* @param $floatnumber |
|
867
|
|
|
* @return float|int |
|
868
|
|
|
*/ |
|
869
|
|
|
public function trunc($floatnumber) |
|
870
|
|
|
{ |
|
871
|
|
|
// truncates a floating-point number at the decimal point |
|
872
|
|
|
// returns int (if possible, otherwise float) |
|
873
|
|
|
if ($floatnumber >= 1) { |
|
874
|
|
|
$truncatednumber = floor($floatnumber); |
|
875
|
|
|
} elseif ($floatnumber <= -1) { |
|
876
|
|
|
$truncatednumber = ceil($floatnumber); |
|
877
|
|
|
} else { |
|
878
|
|
|
$truncatednumber = 0; |
|
879
|
|
|
} |
|
880
|
|
|
if ($truncatednumber <= 1073741824) { // 2^30 |
|
881
|
|
|
$truncatednumber = (int)$truncatednumber; |
|
882
|
|
|
} |
|
883
|
|
|
|
|
884
|
|
|
return $truncatednumber; |
|
885
|
|
|
} |
|
886
|
|
|
|
|
887
|
|
|
/** |
|
888
|
|
|
* @param $byteword |
|
889
|
|
|
* @return int |
|
890
|
|
|
*/ |
|
891
|
|
|
public function LittleEndian2Int($byteword) |
|
892
|
|
|
{ |
|
893
|
|
|
$intvalue = 0; |
|
894
|
|
|
$byteword = strrev($byteword); |
|
895
|
|
|
$bytewordlen = strlen($byteword); |
|
896
|
|
|
for ($i = 0; $i < $bytewordlen; $i++) { |
|
897
|
|
|
$intvalue += ord($byteword{$i}) * pow(256, $bytewordlen - 1 - $i); |
|
898
|
|
|
} |
|
899
|
|
|
|
|
900
|
|
|
return $intvalue; |
|
901
|
|
|
} |
|
902
|
|
|
|
|
903
|
|
|
/** |
|
904
|
|
|
* @param $byteword |
|
905
|
|
|
* @return int |
|
906
|
|
|
*/ |
|
907
|
|
|
public function BigEndian2Int($byteword) |
|
908
|
|
|
{ |
|
909
|
|
|
return $this->LittleEndian2Int(strrev($byteword)); |
|
910
|
|
|
} |
|
911
|
|
|
|
|
912
|
|
|
/** |
|
913
|
|
|
* @param $byteword |
|
914
|
|
|
* @return string |
|
915
|
|
|
*/ |
|
916
|
|
View Code Duplication |
public function BigEndian2Bin($byteword) |
|
917
|
|
|
{ |
|
918
|
|
|
$binvalue = ''; |
|
919
|
|
|
$bytewordlen = strlen($byteword); |
|
920
|
|
|
for ($i = 0; $i < $bytewordlen; $i++) { |
|
921
|
|
|
$binvalue .= str_pad(decbin(ord($byteword{$i})), 8, '0', STR_PAD_LEFT); |
|
922
|
|
|
} |
|
923
|
|
|
|
|
924
|
|
|
return $binvalue; |
|
925
|
|
|
} |
|
926
|
|
|
|
|
927
|
|
|
/** |
|
928
|
|
|
* @param $rawdata |
|
929
|
|
|
* @return float|int |
|
930
|
|
|
*/ |
|
931
|
|
|
public function FixedPoint2_30($rawdata) |
|
932
|
|
|
{ |
|
933
|
|
|
$binarystring = $this->BigEndian2Bin($rawdata); |
|
934
|
|
|
|
|
935
|
|
|
return $this->Bin2Dec(substr($binarystring, 0, 2)) + (float)($this->Bin2Dec(substr($binarystring, 2, 30)) / 1073741824); |
|
936
|
|
|
} |
|
937
|
|
|
|
|
938
|
|
|
/** |
|
939
|
|
|
* @param $binstring |
|
940
|
|
|
* @param bool $signed |
|
941
|
|
|
* @return float|int |
|
942
|
|
|
*/ |
|
943
|
|
|
public function Bin2Dec($binstring, $signed = false) |
|
944
|
|
|
{ |
|
945
|
|
|
$signmult = 1; |
|
946
|
|
|
if ($signed) { |
|
947
|
|
|
if ($binstring{0} == '1') { |
|
948
|
|
|
$signmult = -1; |
|
949
|
|
|
} |
|
950
|
|
|
$binstring = substr($binstring, 1); |
|
951
|
|
|
} |
|
952
|
|
|
$decvalue = 0; |
|
953
|
|
|
for ($i = 0, $iMax = strlen($binstring); $i < $iMax; $i++) { |
|
954
|
|
|
$decvalue += ((int)substr($binstring, strlen($binstring) - $i - 1, 1)) * pow(2, $i); |
|
955
|
|
|
} |
|
956
|
|
|
|
|
957
|
|
|
return $this->CastAsInt($decvalue * $signmult); |
|
958
|
|
|
} |
|
959
|
|
|
|
|
960
|
|
|
/** |
|
961
|
|
|
* @param $floatnum |
|
962
|
|
|
* @return float|int |
|
963
|
|
|
*/ |
|
964
|
|
|
public function CastAsInt($floatnum) |
|
965
|
|
|
{ |
|
966
|
|
|
// convert to float if not already |
|
967
|
|
|
$floatnum = (float)$floatnum; |
|
968
|
|
|
|
|
969
|
|
|
// convert a float to type int, only if possible |
|
970
|
|
|
if ($this->trunc($floatnum) == $floatnum) { |
|
971
|
|
|
// it's not floating point |
|
972
|
|
|
if ($floatnum <= 1073741824) { // 2^30 |
|
973
|
|
|
// it's within int range |
|
974
|
|
|
$floatnum = (int)$floatnum; |
|
975
|
|
|
} |
|
976
|
|
|
} |
|
977
|
|
|
|
|
978
|
|
|
return $floatnum; |
|
979
|
|
|
} |
|
980
|
|
|
} |
|
981
|
|
|
|
XoopsModules25x /
apcal
mambax7
Adding an explicit array definition is generally preferable to implicit array definition as it guarantees a stable state of the code.
Let’s take a look at an example:
As you can see in this example, the array
$myArrayis initialized the first time when the foreach loop is entered. You can also see that the value of thebarkey is only written conditionally; thus, its value might result from a previous iteration.This might or might not be intended. To make your intention clear, your code more readible and to avoid accidental bugs, we recommend to add an explicit initialization $myArray = array() either outside or inside the foreach loop.