function getBMPHeaderFilepointer(&$fd, &$ThisFileInfo, $ExtractPalette = false, $ExtractData = false) { $ThisFileInfo['fileformat'] = 'bmp'; $ThisFileInfo['video']['dataformat'] = 'bmp'; fseek($fd, $ThisFileInfo['avdataoffset'], SEEK_SET); $offset = 0; $BMPheader = fread($fd, 14 + 40); // check if the hardcoded-to-1 "planes" is at offset 22 or 26 $planes22 = LittleEndian2Int(substr($BMPheader, 22, 2)); $planes26 = LittleEndian2Int(substr($BMPheader, 26, 2)); if ($planes22 == 1 && $planes26 != 1) { $ThisFileInfo['bmp']['type_os'] = 'OS/2'; $ThisFileInfo['bmp']['type_version'] = 1; } elseif ($planes26 == 1 && $planes22 != 1) { $ThisFileInfo['bmp']['type_os'] = 'Windows'; $ThisFileInfo['bmp']['type_version'] = 1; } elseif ($ThisFileInfo['bmp']['header']['raw']['header_size'] == 12) { $ThisFileInfo['bmp']['type_os'] = 'OS/2'; $ThisFileInfo['bmp']['type_version'] = 1; } elseif ($ThisFileInfo['bmp']['header']['raw']['header_size'] == 40) { $ThisFileInfo['bmp']['type_os'] = 'Windows'; $ThisFileInfo['bmp']['type_version'] = 1; } elseif ($ThisFileInfo['bmp']['header']['raw']['header_size'] == 84) { $ThisFileInfo['bmp']['type_os'] = 'Windows'; $ThisFileInfo['bmp']['type_version'] = 4; } elseif ($ThisFileInfo['bmp']['header']['raw']['header_size'] == 100) { $ThisFileInfo['bmp']['type_os'] = 'Windows'; $ThisFileInfo['bmp']['type_version'] = 5; } // BITMAPFILEHEADER [14 bytes] - http://msdn.microsoft.com/library/en-us/gdi/bitmaps_62uq.asp // all versions // WORD bfType; // DWORD bfSize; // WORD bfReserved1; // WORD bfReserved2; // DWORD bfOffBits; $ThisFileInfo['bmp']['header']['raw']['identifier'] = substr($BMPheader, $offset, 2); $offset += 2; $ThisFileInfo['bmp']['header']['raw']['filesize'] = LittleEndian2Int(substr($BMPheader, $offset, 4)); $offset += 4; $ThisFileInfo['bmp']['header']['raw']['reserved1'] = LittleEndian2Int(substr($BMPheader, $offset, 2)); $offset += 2; $ThisFileInfo['bmp']['header']['raw']['reserved2'] = LittleEndian2Int(substr($BMPheader, $offset, 2)); $offset += 2; $ThisFileInfo['bmp']['header']['raw']['data_offset'] = LittleEndian2Int(substr($BMPheader, $offset, 4)); $offset += 4; if ($ThisFileInfo['bmp']['type_os'] == 'OS/2') { // OS/2-format BMP // http://netghost.narod.ru/gff/graphics/summary/os2bmp.htm // DWORD Size; /* Size of this structure in bytes */ // DWORD Width; /* Bitmap width in pixels */ // DWORD Height; /* Bitmap height in pixel */ // WORD NumPlanes; /* Number of bit planes (color depth) */ // WORD BitsPerPixel; /* Number of bits per pixel per plane */ $ThisFileInfo['bmp']['header']['raw']['header_size'] = LittleEndian2Int(substr($BMPheader, $offset, 4)); $offset += 4; $ThisFileInfo['bmp']['header']['raw']['width'] = LittleEndian2Int(substr($BMPheader, $offset, 2)); $offset += 2; $ThisFileInfo['bmp']['header']['raw']['height'] = LittleEndian2Int(substr($BMPheader, $offset, 2)); $offset += 2; $ThisFileInfo['bmp']['header']['raw']['planes'] = LittleEndian2Int(substr($BMPheader, $offset, 2)); $offset += 2; $ThisFileInfo['bmp']['header']['raw']['bits_per_pixel'] = LittleEndian2Int(substr($BMPheader, $offset, 2)); $offset += 2; $ThisFileInfo['video']['resolution_x'] = $ThisFileInfo['bmp']['header']['raw']['width']; $ThisFileInfo['video']['resolution_y'] = $ThisFileInfo['bmp']['header']['raw']['height']; $ThisFileInfo['video']['codec'] = 'BI_RGB ' . $ThisFileInfo['bmp']['header']['raw']['bits_per_pixel'] . '-bit'; if ($ThisFileInfo['bmp']['type_version'] >= 2) { // DWORD Compression; /* Bitmap compression scheme */ // DWORD ImageDataSize; /* Size of bitmap data in bytes */ // DWORD XResolution; /* X resolution of display device */ // DWORD YResolution; /* Y resolution of display device */ // DWORD ColorsUsed; /* Number of color table indices used */ // DWORD ColorsImportant; /* Number of important color indices */ // WORD Units; /* Type of units used to measure resolution */ // WORD Reserved; /* Pad structure to 4-byte boundary */ // WORD Recording; /* Recording algorithm */ // WORD Rendering; /* Halftoning algorithm used */ // DWORD Size1; /* Reserved for halftoning algorithm use */ // DWORD Size2; /* Reserved for halftoning algorithm use */ // DWORD ColorEncoding; /* Color model used in bitmap */ // DWORD Identifier; /* Reserved for application use */ $ThisFileInfo['bmp']['header']['raw']['compression'] = LittleEndian2Int(substr($BMPheader, $offset, 4)); $offset += 4; $ThisFileInfo['bmp']['header']['raw']['bmp_data_size'] = LittleEndian2Int(substr($BMPheader, $offset, 4)); $offset += 4; $ThisFileInfo['bmp']['header']['raw']['resolution_h'] = LittleEndian2Int(substr($BMPheader, $offset, 4)); $offset += 4; $ThisFileInfo['bmp']['header']['raw']['resolution_v'] = LittleEndian2Int(substr($BMPheader, $offset, 4)); $offset += 4; $ThisFileInfo['bmp']['header']['raw']['colors_used'] = LittleEndian2Int(substr($BMPheader, $offset, 4)); $offset += 4; $ThisFileInfo['bmp']['header']['raw']['colors_important'] = LittleEndian2Int(substr($BMPheader, $offset, 4)); $offset += 4; $ThisFileInfo['bmp']['header']['raw']['resolution_units'] = LittleEndian2Int(substr($BMPheader, $offset, 2)); $offset += 2; $ThisFileInfo['bmp']['header']['raw']['reserved1'] = LittleEndian2Int(substr($BMPheader, $offset, 2)); $offset += 2; $ThisFileInfo['bmp']['header']['raw']['recording'] = LittleEndian2Int(substr($BMPheader, $offset, 2)); $offset += 2; $ThisFileInfo['bmp']['header']['raw']['rendering'] = LittleEndian2Int(substr($BMPheader, $offset, 2)); $offset += 2; $ThisFileInfo['bmp']['header']['raw']['size1'] = LittleEndian2Int(substr($BMPheader, $offset, 4)); $offset += 4; $ThisFileInfo['bmp']['header']['raw']['size2'] = LittleEndian2Int(substr($BMPheader, $offset, 4)); $offset += 4; $ThisFileInfo['bmp']['header']['raw']['color_encoding'] = LittleEndian2Int(substr($BMPheader, $offset, 4)); $offset += 4; $ThisFileInfo['bmp']['header']['raw']['identifier'] = LittleEndian2Int(substr($BMPheader, $offset, 4)); $offset += 4; $ThisFileInfo['bmp']['header']['compression'] = BMPcompressionOS2Lookup($ThisFileInfo['bmp']['header']['raw']['compression']); $ThisFileInfo['video']['codec'] = $ThisFileInfo['bmp']['header']['compression'] . ' ' . $ThisFileInfo['bmp']['header']['raw']['bits_per_pixel'] . '-bit'; } } elseif ($ThisFileInfo['bmp']['type_os'] == 'Windows') { // Windows-format BMP // BITMAPINFOHEADER - [40 bytes] http://msdn.microsoft.com/library/en-us/gdi/bitmaps_1rw2.asp // all versions // DWORD biSize; // LONG biWidth; // LONG biHeight; // WORD biPlanes; // WORD biBitCount; // DWORD biCompression; // DWORD biSizeImage; // LONG biXPelsPerMeter; // LONG biYPelsPerMeter; // DWORD biClrUsed; // DWORD biClrImportant; $ThisFileInfo['bmp']['header']['raw']['header_size'] = LittleEndian2Int(substr($BMPheader, $offset, 4)); $offset += 4; $ThisFileInfo['bmp']['header']['raw']['width'] = LittleEndian2Int(substr($BMPheader, $offset, 4), true); $offset += 4; $ThisFileInfo['bmp']['header']['raw']['height'] = LittleEndian2Int(substr($BMPheader, $offset, 4), true); $offset += 4; $ThisFileInfo['bmp']['header']['raw']['planes'] = LittleEndian2Int(substr($BMPheader, $offset, 2)); $offset += 2; $ThisFileInfo['bmp']['header']['raw']['bits_per_pixel'] = LittleEndian2Int(substr($BMPheader, $offset, 2)); $offset += 2; $ThisFileInfo['bmp']['header']['raw']['compression'] = LittleEndian2Int(substr($BMPheader, $offset, 4)); $offset += 4; $ThisFileInfo['bmp']['header']['raw']['bmp_data_size'] = LittleEndian2Int(substr($BMPheader, $offset, 4)); $offset += 4; $ThisFileInfo['bmp']['header']['raw']['resolution_h'] = LittleEndian2Int(substr($BMPheader, $offset, 4), true); $offset += 4; $ThisFileInfo['bmp']['header']['raw']['resolution_v'] = LittleEndian2Int(substr($BMPheader, $offset, 4), true); $offset += 4; $ThisFileInfo['bmp']['header']['raw']['colors_used'] = LittleEndian2Int(substr($BMPheader, $offset, 4)); $offset += 4; $ThisFileInfo['bmp']['header']['raw']['colors_important'] = LittleEndian2Int(substr($BMPheader, $offset, 4)); $offset += 4; $ThisFileInfo['bmp']['header']['compression'] = BMPcompressionWindowsLookup($ThisFileInfo['bmp']['header']['raw']['compression']); $ThisFileInfo['video']['resolution_x'] = $ThisFileInfo['bmp']['header']['raw']['width']; $ThisFileInfo['video']['resolution_y'] = $ThisFileInfo['bmp']['header']['raw']['height']; $ThisFileInfo['video']['codec'] = $ThisFileInfo['bmp']['header']['compression'] . ' ' . $ThisFileInfo['bmp']['header']['raw']['bits_per_pixel'] . '-bit'; if ($ThisFileInfo['bmp']['type_version'] >= 4) { $BMPheader .= fread($fd, 44); // BITMAPV4HEADER - [44 bytes] - http://msdn.microsoft.com/library/en-us/gdi/bitmaps_2k1e.asp // Win95+, WinNT4.0+ // DWORD bV4RedMask; // DWORD bV4GreenMask; // DWORD bV4BlueMask; // DWORD bV4AlphaMask; // DWORD bV4CSType; // CIEXYZTRIPLE bV4Endpoints; // DWORD bV4GammaRed; // DWORD bV4GammaGreen; // DWORD bV4GammaBlue; $ThisFileInfo['bmp']['header']['raw']['red_mask'] = LittleEndian2Int(substr($BMPheader, $offset, 4)); $offset += 4; $ThisFileInfo['bmp']['header']['raw']['green_mask'] = LittleEndian2Int(substr($BMPheader, $offset, 4)); $offset += 4; $ThisFileInfo['bmp']['header']['raw']['blue_mask'] = LittleEndian2Int(substr($BMPheader, $offset, 4)); $offset += 4; $ThisFileInfo['bmp']['header']['raw']['alpha_mask'] = LittleEndian2Int(substr($BMPheader, $offset, 4)); $offset += 4; $ThisFileInfo['bmp']['header']['raw']['cs_type'] = LittleEndian2Int(substr($BMPheader, $offset, 4)); $offset += 4; $ThisFileInfo['bmp']['header']['raw']['ciexyz_red'] = substr($BMPheader, $offset, 4); $offset += 4; $ThisFileInfo['bmp']['header']['raw']['ciexyz_green'] = substr($BMPheader, $offset, 4); $offset += 4; $ThisFileInfo['bmp']['header']['raw']['ciexyz_blue'] = substr($BMPheader, $offset, 4); $offset += 4; $ThisFileInfo['bmp']['header']['raw']['gamma_red'] = LittleEndian2Int(substr($BMPheader, $offset, 4)); $offset += 4; $ThisFileInfo['bmp']['header']['raw']['gamma_green'] = LittleEndian2Int(substr($BMPheader, $offset, 4)); $offset += 4; $ThisFileInfo['bmp']['header']['raw']['gamma_blue'] = LittleEndian2Int(substr($BMPheader, $offset, 4)); $offset += 4; $ThisFileInfo['bmp']['header']['ciexyz_red'] = FixedPoint2_30(strrev($ThisFileInfo['bmp']['header']['raw']['ciexyz_red'])); $ThisFileInfo['bmp']['header']['ciexyz_green'] = FixedPoint2_30(strrev($ThisFileInfo['bmp']['header']['raw']['ciexyz_green'])); $ThisFileInfo['bmp']['header']['ciexyz_blue'] = FixedPoint2_30(strrev($ThisFileInfo['bmp']['header']['raw']['ciexyz_blue'])); } if ($ThisFileInfo['bmp']['type_version'] >= 5) { $BMPheader .= fread($fd, 16); // BITMAPV5HEADER - [16 bytes] - http://msdn.microsoft.com/library/en-us/gdi/bitmaps_7c36.asp // Win98+, Win2000+ // DWORD bV5Intent; // DWORD bV5ProfileData; // DWORD bV5ProfileSize; // DWORD bV5Reserved; $ThisFileInfo['bmp']['header']['raw']['intent'] = LittleEndian2Int(substr($BMPheader, $offset, 4)); $offset += 4; $ThisFileInfo['bmp']['header']['raw']['profile_data_offset'] = LittleEndian2Int(substr($BMPheader, $offset, 4)); $offset += 4; $ThisFileInfo['bmp']['header']['raw']['profile_data_size'] = LittleEndian2Int(substr($BMPheader, $offset, 4)); $offset += 4; $ThisFileInfo['bmp']['header']['raw']['reserved3'] = LittleEndian2Int(substr($BMPheader, $offset, 4)); $offset += 4; } } else { $ThisFileInfo['error'] .= "\n" . 'Unknown BMP format in header.'; return false; } if ($ExtractPalette || $ExtractData) { $PaletteEntries = 0; if ($ThisFileInfo['bmp']['header']['raw']['bits_per_pixel'] < 16) { $PaletteEntries = pow(2, $ThisFileInfo['bmp']['header']['raw']['bits_per_pixel']); } elseif (isset($ThisFileInfo['bmp']['header']['raw']['colors_used']) && $ThisFileInfo['bmp']['header']['raw']['colors_used'] > 0 && $ThisFileInfo['bmp']['header']['raw']['colors_used'] <= 256) { $PaletteEntries = $ThisFileInfo['bmp']['header']['raw']['colors_used']; } if ($PaletteEntries > 0) { $BMPpalette = fread($fd, 4 * $PaletteEntries); $paletteoffset = 0; for ($i = 0; $i < $PaletteEntries; $i++) { // RGBQUAD - http://msdn.microsoft.com/library/en-us/gdi/bitmaps_5f8y.asp // BYTE rgbBlue; // BYTE rgbGreen; // BYTE rgbRed; // BYTE rgbReserved; //$ThisFileInfo['bmp']['palette']['blue'][$i] = LittleEndian2Int(substr($BMPpalette, $paletteoffset++, 1)); //$ThisFileInfo['bmp']['palette']['green'][$i] = LittleEndian2Int(substr($BMPpalette, $paletteoffset++, 1)); //$ThisFileInfo['bmp']['palette']['red'][$i] = LittleEndian2Int(substr($BMPpalette, $paletteoffset++, 1)); $blue = LittleEndian2Int(substr($BMPpalette, $paletteoffset++, 1)); $green = LittleEndian2Int(substr($BMPpalette, $paletteoffset++, 1)); $red = LittleEndian2Int(substr($BMPpalette, $paletteoffset++, 1)); if ($ThisFileInfo['bmp']['type_os'] == 'OS/2' && $ThisFileInfo['bmp']['type_version'] == 1) { // no padding byte } else { $paletteoffset++; // padding byte } $ThisFileInfo['bmp']['palette'][$i] = $red << 16 | $green << 8 | $blue; } } } if ($ExtractData) { fseek($fd, $ThisFileInfo['bmp']['header']['raw']['data_offset'], SEEK_SET); $RowByteLength = ceil($ThisFileInfo['bmp']['header']['raw']['width'] * ($ThisFileInfo['bmp']['header']['raw']['bits_per_pixel'] / 8) / 4) * 4; // round up to nearest DWORD boundry $BMPpixelData = fread($fd, $ThisFileInfo['bmp']['header']['raw']['height'] * $RowByteLength); $pixeldataoffset = 0; switch ($ThisFileInfo['bmp']['header']['raw']['compression']) { case 0: // BI_RGB switch ($ThisFileInfo['bmp']['header']['raw']['bits_per_pixel']) { case 1: for ($row = $ThisFileInfo['bmp']['header']['raw']['height'] - 1; $row >= 0; $row--) { for ($col = 0; $col < $ThisFileInfo['bmp']['header']['raw']['width']; $col = $col) { $paletteindexbyte = LittleEndian2Int(substr($BMPpixelData, $pixeldataoffset++, 1)); for ($i = 7; $i >= 0; $i--) { $paletteindex = ($paletteindexbyte & 0x1 << $i) >> $i; $ThisFileInfo['bmp']['data'][$row][$col] = $ThisFileInfo['bmp']['palette'][$paletteindex]; $col++; } } while ($pixeldataoffset % 4 != 0) { // lines are padded to nearest DWORD $pixeldataoffset++; } } break; case 4: for ($row = $ThisFileInfo['bmp']['header']['raw']['height'] - 1; $row >= 0; $row--) { for ($col = 0; $col < $ThisFileInfo['bmp']['header']['raw']['width']; $col = $col) { $paletteindexbyte = LittleEndian2Int(substr($BMPpixelData, $pixeldataoffset++, 1)); for ($i = 1; $i >= 0; $i--) { $paletteindex = ($paletteindexbyte & 0xf << 4 * $i) >> 4 * $i; $ThisFileInfo['bmp']['data'][$row][$col] = $ThisFileInfo['bmp']['palette'][$paletteindex]; $col++; } } while ($pixeldataoffset % 4 != 0) { // lines are padded to nearest DWORD $pixeldataoffset++; } } break; case 8: for ($row = $ThisFileInfo['bmp']['header']['raw']['height'] - 1; $row >= 0; $row--) { for ($col = 0; $col < $ThisFileInfo['bmp']['header']['raw']['width']; $col++) { $paletteindex = LittleEndian2Int(substr($BMPpixelData, $pixeldataoffset++, 1)); $ThisFileInfo['bmp']['data'][$row][$col] = $ThisFileInfo['bmp']['palette'][$paletteindex]; } while ($pixeldataoffset % 4 != 0) { // lines are padded to nearest DWORD $pixeldataoffset++; } } break; case 24: case 32: for ($row = $ThisFileInfo['bmp']['header']['raw']['height'] - 1; $row >= 0; $row--) { for ($col = 0; $col < $ThisFileInfo['bmp']['header']['raw']['width']; $col++) { $blue = LittleEndian2Int(substr($BMPpixelData, $pixeldataoffset++, 1)); $green = LittleEndian2Int(substr($BMPpixelData, $pixeldataoffset++, 1)); $red = LittleEndian2Int(substr($BMPpixelData, $pixeldataoffset++, 1)); if ($ThisFileInfo['bmp']['header']['raw']['bits_per_pixel'] == 32) { $paletteoffset++; // filler byte } $ThisFileInfo['bmp']['data'][$row][$col] = $red << 16 | $green << 8 | $blue; } while ($pixeldataoffset % 4 != 0) { // lines are padded to nearest DWORD $pixeldataoffset++; } } break; case 16: default: $ThisFileInfo['error'] .= "\n" . 'Unknown bits-per-pixel value (' . $ThisFileInfo['bmp']['header']['raw']['bits_per_pixel'] . ') - cannot read pixel data'; break; } break; case 1: // BI_RLE8 - http://msdn.microsoft.com/library/en-us/gdi/bitmaps_6x0u.asp switch ($ThisFileInfo['bmp']['header']['raw']['bits_per_pixel']) { case 8: $pixelcounter = 0; while ($pixeldataoffset < strlen($BMPpixelData)) { $firstbyte = LittleEndian2Int(substr($BMPpixelData, $pixeldataoffset++, 1)); $secondbyte = LittleEndian2Int(substr($BMPpixelData, $pixeldataoffset++, 1)); if ($firstbyte == 0) { // escaped/absolute mode - the first byte of the pair can be set to zero to // indicate an escape character that denotes the end of a line, the end of // a bitmap, or a delta, depending on the value of the second byte. switch ($secondbyte) { case 0: // end of line // no need for special processing, just ignore break; case 1: // end of bitmap $pixeldataoffset = strlen($BMPpixelData); // force to exit loop just in case break; case 2: // delta - The 2 bytes following the escape contain unsigned values // indicating the horizontal and vertical offsets of the next pixel // from the current position. $colincrement = LittleEndian2Int(substr($BMPpixelData, $pixeldataoffset++, 1)); $rowincrement = LittleEndian2Int(substr($BMPpixelData, $pixeldataoffset++, 1)); $col = $pixelcounter % $ThisFileInfo['bmp']['header']['raw']['width'] + $colincrement; $row = $ThisFileInfo['bmp']['header']['raw']['height'] - 1 - ($pixelcounter - $col) / $ThisFileInfo['bmp']['header']['raw']['width'] - $rowincrement; $pixelcounter = $row * $ThisFileInfo['bmp']['header']['raw']['width'] + $col; break; default: // In absolute mode, the first byte is zero and the second byte is a // value in the range 03H through FFH. The second byte represents the // number of bytes that follow, each of which contains the color index // of a single pixel. Each run must be aligned on a word boundary. for ($i = 0; $i < $secondbyte; $i++) { $paletteindex = LittleEndian2Int(substr($BMPpixelData, $pixeldataoffset++, 1)); $col = $pixelcounter % $ThisFileInfo['bmp']['header']['raw']['width']; $row = $ThisFileInfo['bmp']['header']['raw']['height'] - 1 - ($pixelcounter - $col) / $ThisFileInfo['bmp']['header']['raw']['width']; $ThisFileInfo['bmp']['data'][$row][$col] = $ThisFileInfo['bmp']['palette'][$paletteindex]; $pixelcounter++; } while ($pixeldataoffset % 2 != 0) { // Each run must be aligned on a word boundary. $pixeldataoffset++; } break; } } else { // encoded mode - the first byte specifies the number of consecutive pixels // to be drawn using the color index contained in the second byte. for ($i = 0; $i < $firstbyte; $i++) { $col = $pixelcounter % $ThisFileInfo['bmp']['header']['raw']['width']; $row = $ThisFileInfo['bmp']['header']['raw']['height'] - 1 - ($pixelcounter - $col) / $ThisFileInfo['bmp']['header']['raw']['width']; $ThisFileInfo['bmp']['data'][$row][$col] = $ThisFileInfo['bmp']['palette'][$secondbyte]; $pixelcounter++; } } } break; default: $ThisFileInfo['error'] .= "\n" . 'Unknown bits-per-pixel value (' . $ThisFileInfo['bmp']['header']['raw']['bits_per_pixel'] . ') - cannot read pixel data'; break; } break; case 2: // BI_RLE4 - http://msdn.microsoft.com/library/en-us/gdi/bitmaps_6x0u.asp switch ($ThisFileInfo['bmp']['header']['raw']['bits_per_pixel']) { case 4: $pixelcounter = 0; while ($pixeldataoffset < strlen($BMPpixelData)) { $firstbyte = LittleEndian2Int(substr($BMPpixelData, $pixeldataoffset++, 1)); $secondbyte = LittleEndian2Int(substr($BMPpixelData, $pixeldataoffset++, 1)); if ($firstbyte == 0) { // escaped/absolute mode - the first byte of the pair can be set to zero to // indicate an escape character that denotes the end of a line, the end of // a bitmap, or a delta, depending on the value of the second byte. switch ($secondbyte) { case 0: // end of line // no need for special processing, just ignore break; case 1: // end of bitmap $pixeldataoffset = strlen($BMPpixelData); // force to exit loop just in case break; case 2: // delta - The 2 bytes following the escape contain unsigned values // indicating the horizontal and vertical offsets of the next pixel // from the current position. $colincrement = LittleEndian2Int(substr($BMPpixelData, $pixeldataoffset++, 1)); $rowincrement = LittleEndian2Int(substr($BMPpixelData, $pixeldataoffset++, 1)); $col = $pixelcounter % $ThisFileInfo['bmp']['header']['raw']['width'] + $colincrement; $row = $ThisFileInfo['bmp']['header']['raw']['height'] - 1 - ($pixelcounter - $col) / $ThisFileInfo['bmp']['header']['raw']['width'] - $rowincrement; $pixelcounter = $row * $ThisFileInfo['bmp']['header']['raw']['width'] + $col; break; default: // In absolute mode, the first byte is zero. The second byte contains the number // of color indexes that follow. Subsequent bytes contain color indexes in their // high- and low-order 4 bits, one color index for each pixel. In absolute mode, // each run must be aligned on a word boundary. unset($paletteindexes); for ($i = 0; $i < ceil($secondbyte / 2); $i++) { $paletteindexbyte = LittleEndian2Int(substr($BMPpixelData, $pixeldataoffset++, 1)); $paletteindexes[] = ($paletteindexbyte & 0xf0) >> 4; $paletteindexes[] = $paletteindexbyte & 0xf; } while ($pixeldataoffset % 2 != 0) { // Each run must be aligned on a word boundary. $pixeldataoffset++; } foreach ($paletteindexes as $paletteindex) { $col = $pixelcounter % $ThisFileInfo['bmp']['header']['raw']['width']; $row = $ThisFileInfo['bmp']['header']['raw']['height'] - 1 - ($pixelcounter - $col) / $ThisFileInfo['bmp']['header']['raw']['width']; $ThisFileInfo['bmp']['data'][$row][$col] = $ThisFileInfo['bmp']['palette'][$paletteindex]; $pixelcounter++; } break; } } else { // encoded mode - the first byte of the pair contains the number of pixels to be // drawn using the color indexes in the second byte. The second byte contains two // color indexes, one in its high-order 4 bits and one in its low-order 4 bits. // The first of the pixels is drawn using the color specified by the high-order // 4 bits, the second is drawn using the color in the low-order 4 bits, the third // is drawn using the color in the high-order 4 bits, and so on, until all the // pixels specified by the first byte have been drawn. $paletteindexes[0] = ($secondbyte & 0xf0) >> 4; $paletteindexes[1] = $secondbyte & 0xf; for ($i = 0; $i < $firstbyte; $i++) { $col = $pixelcounter % $ThisFileInfo['bmp']['header']['raw']['width']; $row = $ThisFileInfo['bmp']['header']['raw']['height'] - 1 - ($pixelcounter - $col) / $ThisFileInfo['bmp']['header']['raw']['width']; $ThisFileInfo['bmp']['data'][$row][$col] = $ThisFileInfo['bmp']['palette'][$paletteindexes[$i % 2]]; $pixelcounter++; } } } break; default: $ThisFileInfo['error'] .= "\n" . 'Unknown bits-per-pixel value (' . $ThisFileInfo['bmp']['header']['raw']['bits_per_pixel'] . ') - cannot read pixel data'; break; } break; case 3: // BI_BITFIELDS switch ($ThisFileInfo['bmp']['header']['raw']['bits_per_pixel']) { case 16: case 32: $redshift = 0; $greenshift = 0; $blueshift = 0; while (($ThisFileInfo['bmp']['header']['raw']['red_mask'] >> $redshift & 0x1) == 0) { $redshift++; } while (($ThisFileInfo['bmp']['header']['raw']['green_mask'] >> $greenshift & 0x1) == 0) { $greenshift++; } while (($ThisFileInfo['bmp']['header']['raw']['blue_mask'] >> $blueshift & 0x1) == 0) { $blueshift++; } for ($row = $ThisFileInfo['bmp']['header']['raw']['height'] - 1; $row >= 0; $row--) { for ($col = 0; $col < $ThisFileInfo['bmp']['header']['raw']['width']; $col++) { $pixelvalue = LittleEndian2Int(substr($BMPpixelData, $pixeldataoffset, $ThisFileInfo['bmp']['header']['raw']['bits_per_pixel'] / 8)); $pixeldataoffset += $ThisFileInfo['bmp']['header']['raw']['bits_per_pixel'] / 8; $red = round((($pixelvalue & $ThisFileInfo['bmp']['header']['raw']['red_mask']) >> $redshift) / ($ThisFileInfo['bmp']['header']['raw']['red_mask'] >> $redshift) * 255); $green = round((($pixelvalue & $ThisFileInfo['bmp']['header']['raw']['green_mask']) >> $greenshift) / ($ThisFileInfo['bmp']['header']['raw']['green_mask'] >> $greenshift) * 255); $blue = round((($pixelvalue & $ThisFileInfo['bmp']['header']['raw']['blue_mask']) >> $blueshift) / ($ThisFileInfo['bmp']['header']['raw']['blue_mask'] >> $blueshift) * 255); $ThisFileInfo['bmp']['data'][$row][$col] = $red << 16 | $green << 8 | $blue; } while ($pixeldataoffset % 4 != 0) { // lines are padded to nearest DWORD $pixeldataoffset++; } } break; default: $ThisFileInfo['error'] .= "\n" . 'Unknown bits-per-pixel value (' . $ThisFileInfo['bmp']['header']['raw']['bits_per_pixel'] . ') - cannot read pixel data'; break; } break; default: // unhandled compression type $ThisFileInfo['error'] .= "\n" . 'Unknown/unhandled compression type value (' . $ThisFileInfo['bmp']['header']['raw']['compression'] . ') - cannot decompress pixel data'; break; } } return true; }
function QuicktimeParseAtom($atomname, $atomsize, $atomdata, &$ThisFileInfo, $baseoffset, &$atomHierarchy) { // http://developer.apple.com/techpubs/quicktime/qtdevdocs/APIREF/INDEX/atomalphaindex.htm array_push($atomHierarchy, $atomname); $atomstructure['hierarchy'] = implode(' ', $atomHierarchy); $atomstructure['name'] = $atomname; $atomstructure['size'] = $atomsize; $atomstructure['offset'] = $baseoffset; switch ($atomname) { case 'moov': // MOVie container atom // MOVie container atom case 'trak': // TRAcK container atom // TRAcK container atom case 'clip': // CLIPping container atom // CLIPping container atom case 'matt': // track MATTe container atom // track MATTe container atom case 'edts': // EDiTS container atom // EDiTS container atom case 'tref': // Track REFerence container atom // Track REFerence container atom case 'mdia': // MeDIA container atom // MeDIA container atom case 'minf': // Media INFormation container atom // Media INFormation container atom case 'dinf': // Data INFormation container atom // Data INFormation container atom case 'udta': // User DaTA container atom // User DaTA container atom case 'stbl': // Sample TaBLe container atom // Sample TaBLe container atom case 'cmov': // Compressed MOVie container atom // Compressed MOVie container atom case 'rmra': // Reference Movie Record Atom // Reference Movie Record Atom case 'rmda': // Reference Movie Descriptor Atom $atomstructure['subatoms'] = QuicktimeParseContainerAtom($atomdata, $ThisFileInfo, $baseoffset + 8, $atomHierarchy); break; case '©cpy': case '©day': case '©dir': case '©ed1': case '©ed2': case '©ed3': case '©ed4': case '©ed5': case '©ed6': case '©ed7': case '©ed8': case '©ed9': case '©fmt': case '©inf': case '©prd': case '©prf': case '©req': case '©src': case '©wrt': case '©nam': case '©cmt': case '©wrn': case '©hst': case '©mak': case '©mod': case '©PRD': case '©swr': case '©aut': case '©ART': case '©trk': case '©alb': case '©com': case '©gen': case '©ope': case '©url': case '©enc': $atomstructure['data_length'] = BigEndian2Int(substr($atomdata, 0, 2)); $atomstructure['language_id'] = BigEndian2Int(substr($atomdata, 2, 2)); $atomstructure['data'] = substr($atomdata, 4); $atomstructure['language'] = QuicktimeLanguageLookup($atomstructure['language_id']); $handyatomtranslatorarray['©cpy'] = 'copyright'; $handyatomtranslatorarray['©day'] = 'creation_date'; $handyatomtranslatorarray['©dir'] = 'director'; $handyatomtranslatorarray['©ed1'] = 'edit1'; $handyatomtranslatorarray['©ed2'] = 'edit2'; $handyatomtranslatorarray['©ed3'] = 'edit3'; $handyatomtranslatorarray['©ed4'] = 'edit4'; $handyatomtranslatorarray['©ed5'] = 'edit5'; $handyatomtranslatorarray['©ed6'] = 'edit6'; $handyatomtranslatorarray['©ed7'] = 'edit7'; $handyatomtranslatorarray['©ed8'] = 'edit8'; $handyatomtranslatorarray['©ed9'] = 'edit9'; $handyatomtranslatorarray['©fmt'] = 'format'; $handyatomtranslatorarray['©inf'] = 'information'; $handyatomtranslatorarray['©prd'] = 'producer'; $handyatomtranslatorarray['©prf'] = 'performers'; $handyatomtranslatorarray['©req'] = 'system_requirements'; $handyatomtranslatorarray['©src'] = 'source_credit'; $handyatomtranslatorarray['©wrt'] = 'writer'; // http://www.geocities.com/xhelmboyx/quicktime/formats/qtm-layout.txt $handyatomtranslatorarray['©nam'] = 'title'; $handyatomtranslatorarray['©cmt'] = 'comment'; $handyatomtranslatorarray['©wrn'] = 'warning'; $handyatomtranslatorarray['©hst'] = 'host_computer'; $handyatomtranslatorarray['©mak'] = 'make'; $handyatomtranslatorarray['©mod'] = 'model'; $handyatomtranslatorarray['©PRD'] = 'product'; $handyatomtranslatorarray['©swr'] = 'software'; $handyatomtranslatorarray['©aut'] = 'author'; $handyatomtranslatorarray['©ART'] = 'artist'; $handyatomtranslatorarray['©trk'] = 'track'; $handyatomtranslatorarray['©alb'] = 'album'; $handyatomtranslatorarray['©com'] = 'comment'; $handyatomtranslatorarray['©gen'] = 'genre'; $handyatomtranslatorarray['©ope'] = 'composer'; $handyatomtranslatorarray['©url'] = 'url'; $handyatomtranslatorarray['©enc'] = 'encoder'; if (isset($handyatomtranslatorarray["{$atomname}"])) { $ThisFileInfo['quicktime']['comments'][$handyatomtranslatorarray["{$atomname}"]][] = $atomstructure['data']; } break; case 'play': // auto-PLAY atom $atomstructure['autoplay'] = (bool) BigEndian2Int(substr($atomdata, 0, 1)); $ThisFileInfo['quicktime']['autoplay'] = $atomstructure['autoplay']; break; case 'WLOC': // Window LOCation atom $atomstructure['location_x'] = BigEndian2Int(substr($atomdata, 0, 2)); $atomstructure['location_y'] = BigEndian2Int(substr($atomdata, 2, 2)); break; case 'LOOP': // LOOPing atom // LOOPing atom case 'SelO': // play SELection Only atom // play SELection Only atom case 'AllF': // play ALL Frames atom $atomstructure['data'] = BigEndian2Int($atomdata); break; case 'name': // // case 'MCPS': // Media Cleaner PRo // Media Cleaner PRo case '@PRM': // adobe PReMiere version // adobe PReMiere version case '@PRQ': // adobe PRemiere Quicktime version $atomstructure['data'] = $atomdata; break; case 'cmvd': // Compressed MooV Data atom $ThisFileInfo['warning'] .= "\n" . 'Compressed Quicktime MOOV Data atoms ("cmvd") not supported'; break; case 'dcom': // Data COMpression atom $atomstructure['compression_id'] = $atomdata; $atomstructure['compression_text'] = QuicktimeDCOMLookup($atomdata); break; case 'rdrf': // Reference movie Data ReFerence atom $atomstructure['version'] = BigEndian2Int(substr($atomdata, 0, 1)); $atomstructure['flags_raw'] = BigEndian2Int(substr($atomdata, 1, 3)); $atomstructure['flags']['internal_data'] = (bool) ($atomstructure['flags_raw'] & 0x1); $atomstructure['reference_type_name'] = substr($atomdata, 4, 4); $atomstructure['reference_length'] = BigEndian2Int(substr($atomdata, 8, 4)); switch ($atomstructure['reference_type_name']) { case 'url ': $atomstructure['url'] = NoNullString(substr($atomdata, 12)); break; case 'alis': $atomstructure['file_alias'] = substr($atomdata, 12); break; case 'rsrc': $atomstructure['resource_alias'] = substr($atomdata, 12); break; default: $atomstructure['data'] = substr($atomdata, 12); break; } break; case 'rmqu': // Reference Movie QUality atom $atomstructure['movie_quality'] = BigEndian2Int($atomdata); break; case 'rmcs': // Reference Movie Cpu Speed atom $atomstructure['version'] = BigEndian2Int(substr($atomdata, 0, 1)); $atomstructure['flags_raw'] = BigEndian2Int(substr($atomdata, 1, 3)); // hardcoded: 0x000 $atomstructure['cpu_speed_rating'] = BigEndian2Int(substr($atomdata, 4, 2)); break; case 'rmvc': // Reference Movie Version Check atom $atomstructure['version'] = BigEndian2Int(substr($atomdata, 0, 1)); $atomstructure['flags_raw'] = BigEndian2Int(substr($atomdata, 1, 3)); // hardcoded: 0x000 $atomstructure['gestalt_selector'] = substr($atomdata, 4, 4); $atomstructure['gestalt_value_mask'] = BigEndian2Int(substr($atomdata, 8, 4)); $atomstructure['gestalt_value'] = BigEndian2Int(substr($atomdata, 12, 4)); $atomstructure['gestalt_check_type'] = BigEndian2Int(substr($atomdata, 14, 2)); break; case 'rmcd': // Reference Movie Component check atom $atomstructure['version'] = BigEndian2Int(substr($atomdata, 0, 1)); $atomstructure['flags_raw'] = BigEndian2Int(substr($atomdata, 1, 3)); // hardcoded: 0x000 $atomstructure['component_type'] = substr($atomdata, 4, 4); $atomstructure['component_subtype'] = substr($atomdata, 8, 4); $atomstructure['component_manufacturer'] = substr($atomdata, 12, 4); $atomstructure['component_flags_raw'] = BigEndian2Int(substr($atomdata, 16, 4)); $atomstructure['component_flags_mask'] = BigEndian2Int(substr($atomdata, 20, 4)); $atomstructure['component_min_version'] = BigEndian2Int(substr($atomdata, 24, 4)); break; case 'rmdr': // Reference Movie Data Rate atom $atomstructure['version'] = BigEndian2Int(substr($atomdata, 0, 1)); $atomstructure['flags_raw'] = BigEndian2Int(substr($atomdata, 1, 3)); // hardcoded: 0x000 $atomstructure['data_rate'] = BigEndian2Int(substr($atomdata, 4, 4)); $atomstructure['data_rate_bps'] = $atomstructure['data_rate'] * 10; break; case 'rmla': // Reference Movie Language Atom $atomstructure['version'] = BigEndian2Int(substr($atomdata, 0, 1)); $atomstructure['flags_raw'] = BigEndian2Int(substr($atomdata, 1, 3)); // hardcoded: 0x000 $atomstructure['language_id'] = BigEndian2Int(substr($atomdata, 4, 2)); $atomstructure['language'] = QuicktimeLanguageLookup($atomstructure['language_id']); break; case 'rmla': // Reference Movie Language Atom $atomstructure['version'] = BigEndian2Int(substr($atomdata, 0, 1)); $atomstructure['flags_raw'] = BigEndian2Int(substr($atomdata, 1, 3)); // hardcoded: 0x000 $atomstructure['track_id'] = BigEndian2Int(substr($atomdata, 4, 2)); break; case 'stsd': // Sample Table Sample Description atom $atomstructure['version'] = BigEndian2Int(substr($atomdata, 0, 1)); $atomstructure['flags_raw'] = BigEndian2Int(substr($atomdata, 1, 3)); // hardcoded: 0x000 $atomstructure['number_entries'] = BigEndian2Int(substr($atomdata, 4, 4)); $stsdEntriesDataOffset = 8; for ($i = 0; $i < $atomstructure['number_entries']; $i++) { $atomstructure['sample_description_table'][$i]['size'] = BigEndian2Int(substr($atomdata, $stsdEntriesDataOffset, 4)); $stsdEntriesDataOffset += 4; $atomstructure['sample_description_table'][$i]['data_format'] = substr($atomdata, $stsdEntriesDataOffset, 4); $stsdEntriesDataOffset += 4; $atomstructure['sample_description_table'][$i]['reserved'] = BigEndian2Int(substr($atomdata, $stsdEntriesDataOffset, 6)); $stsdEntriesDataOffset += 6; $atomstructure['sample_description_table'][$i]['reference_index'] = BigEndian2Int(substr($atomdata, $stsdEntriesDataOffset, 2)); $stsdEntriesDataOffset += 2; $atomstructure['sample_description_table'][$i]['data'] = substr($atomdata, $stsdEntriesDataOffset, $atomstructure['sample_description_table'][$i]['size'] - 4 - 4 - 6 - 2); $stsdEntriesDataOffset += $atomstructure['sample_description_table'][$i]['size'] - 4 - 4 - 6 - 2; $atomstructure['sample_description_table'][$i]['encoder_version'] = BigEndian2Int(substr($atomstructure['sample_description_table'][$i]['data'], 0, 2)); $atomstructure['sample_description_table'][$i]['encoder_revision'] = BigEndian2Int(substr($atomstructure['sample_description_table'][$i]['data'], 2, 2)); $atomstructure['sample_description_table'][$i]['encoder_vendor'] = substr($atomstructure['sample_description_table'][$i]['data'], 4, 4); if ($atomstructure['sample_description_table'][$i]['encoder_vendor'] == chr(0) . chr(0) . chr(0) . chr(0)) { // audio atom $atomstructure['sample_description_table'][$i]['audio_channels'] = BigEndian2Int(substr($atomstructure['sample_description_table'][$i]['data'], 8, 2)); $atomstructure['sample_description_table'][$i]['audio_bit_depth'] = BigEndian2Int(substr($atomstructure['sample_description_table'][$i]['data'], 10, 2)); $atomstructure['sample_description_table'][$i]['audio_compression_id'] = BigEndian2Int(substr($atomstructure['sample_description_table'][$i]['data'], 12, 2)); $atomstructure['sample_description_table'][$i]['audio_packet_size'] = BigEndian2Int(substr($atomstructure['sample_description_table'][$i]['data'], 14, 2)); $atomstructure['sample_description_table'][$i]['audio_sample_rate'] = FixedPoint16_16(substr($atomstructure['sample_description_table'][$i]['data'], 16, 4)); $ThisFileInfo['quicktime']['audio']['codec'] = QuicktimeAudioCodecLookup($atomstructure['sample_description_table'][$i]['data_format']); $ThisFileInfo['quicktime']['audio']['sample_rate'] = $atomstructure['sample_description_table'][$i]['audio_sample_rate']; $ThisFileInfo['quicktime']['audio']['channels'] = $atomstructure['sample_description_table'][$i]['audio_channels']; $ThisFileInfo['quicktime']['audio']['bit_depth'] = $atomstructure['sample_description_table'][$i]['audio_bit_depth']; $ThisFileInfo['audio']['codec'] = $ThisFileInfo['quicktime']['audio']['codec']; $ThisFileInfo['audio']['sample_rate'] = $ThisFileInfo['quicktime']['audio']['sample_rate']; $ThisFileInfo['audio']['channels'] = $ThisFileInfo['quicktime']['audio']['channels']; $ThisFileInfo['audio']['bits_per_sample'] = $ThisFileInfo['quicktime']['audio']['bit_depth']; } else { // video atom $atomstructure['sample_description_table'][$i]['video_temporal_quality'] = BigEndian2Int(substr($atomstructure['sample_description_table'][$i]['data'], 8, 4)); $atomstructure['sample_description_table'][$i]['video_spatial_quality'] = BigEndian2Int(substr($atomstructure['sample_description_table'][$i]['data'], 12, 4)); $atomstructure['sample_description_table'][$i]['video_frame_width'] = BigEndian2Int(substr($atomstructure['sample_description_table'][$i]['data'], 16, 2)); $atomstructure['sample_description_table'][$i]['video_frame_height'] = BigEndian2Int(substr($atomstructure['sample_description_table'][$i]['data'], 18, 2)); $atomstructure['sample_description_table'][$i]['video_resolution_x'] = FixedPoint16_16(substr($atomstructure['sample_description_table'][$i]['data'], 20, 4)); $atomstructure['sample_description_table'][$i]['video_resolution_y'] = FixedPoint16_16(substr($atomstructure['sample_description_table'][$i]['data'], 24, 4)); $atomstructure['sample_description_table'][$i]['video_data_size'] = BigEndian2Int(substr($atomstructure['sample_description_table'][$i]['data'], 28, 4)); $atomstructure['sample_description_table'][$i]['video_frame_count'] = BigEndian2Int(substr($atomstructure['sample_description_table'][$i]['data'], 32, 2)); $atomstructure['sample_description_table'][$i]['video_encoder_name_len'] = BigEndian2Int(substr($atomstructure['sample_description_table'][$i]['data'], 34, 1)); $atomstructure['sample_description_table'][$i]['video_encoder_name'] = substr($atomstructure['sample_description_table'][$i]['data'], 35, $atomstructure['sample_description_table'][$i]['video_encoder_name_len']); $atomstructure['sample_description_table'][$i]['video_pixel_color_depth'] = BigEndian2Int(substr($atomstructure['sample_description_table'][$i]['data'], 66, 2)); $atomstructure['sample_description_table'][$i]['video_color_table_id'] = BigEndian2Int(substr($atomstructure['sample_description_table'][$i]['data'], 68, 2)); $atomstructure['sample_description_table'][$i]['video_pixel_color_type'] = $atomstructure['sample_description_table'][$i]['video_pixel_color_depth'] > 32 ? 'grayscale' : 'color'; $atomstructure['sample_description_table'][$i]['video_pixel_color_name'] = QuicktimeColorNameLookup($atomstructure['sample_description_table'][$i]['video_pixel_color_depth']); if ($atomstructure['sample_description_table'][$i]['video_pixel_color_name'] != 'invalid') { //$ThisFileInfo['quicktime']['video']['codec'] = QuicktimeVideoCodecLookup($atomstructure['sample_description_table'][$i]['data_format']); $ThisFileInfo['quicktime']['video']['codec'] = $atomstructure['sample_description_table'][$i]['video_encoder_name']; $ThisFileInfo['quicktime']['video']['color_depth'] = $atomstructure['sample_description_table'][$i]['video_pixel_color_depth']; $ThisFileInfo['quicktime']['video']['color_depth_name'] = $atomstructure['sample_description_table'][$i]['video_pixel_color_name']; $ThisFileInfo['video']['codec'] = $ThisFileInfo['quicktime']['video']['codec']; } } switch ($atomstructure['sample_description_table'][$i]['data_format']) { case 'mp4a': $ThisFileInfo['fileformat'] = 'mp4'; $ThisFileInfo['mime_type'] = 'audio/mp4'; unset($ThisFileInfo['video']['dataformat']); break; default: // do nothing break; } unset($atomstructure['sample_description_table'][$i]['data']); } break; case 'stts': // Sample Table Time-to-Sample atom $atomstructure['version'] = BigEndian2Int(substr($atomdata, 0, 1)); $atomstructure['flags_raw'] = BigEndian2Int(substr($atomdata, 1, 3)); // hardcoded: 0x000 $atomstructure['number_entries'] = BigEndian2Int(substr($atomdata, 4, 4)); $sttsEntriesDataOffset = 8; for ($i = 0; $i < $atomstructure['number_entries']; $i++) { $atomstructure['time_to_sample_table'][$i]['sample_count'] = BigEndian2Int(substr($atomdata, $sttsEntriesDataOffset, 4)); $sttsEntriesDataOffset += 4; $atomstructure['time_to_sample_table'][$i]['sample_duration'] = BigEndian2Int(substr($atomdata, $sttsEntriesDataOffset, 4)); $sttsEntriesDataOffset += 4; } break; case 'stss': // Sample Table Sync Sample (key frames) atom $atomstructure['version'] = BigEndian2Int(substr($atomdata, 0, 1)); $atomstructure['flags_raw'] = BigEndian2Int(substr($atomdata, 1, 3)); // hardcoded: 0x000 $atomstructure['number_entries'] = BigEndian2Int(substr($atomdata, 4, 4)); $stssEntriesDataOffset = 8; for ($i = 0; $i < $atomstructure['number_entries']; $i++) { $atomstructure['time_to_sample_table'][$i] = BigEndian2Int(substr($atomdata, $stssEntriesDataOffset, 4)); $stssEntriesDataOffset += 4; } break; case 'stsc': // Sample Table Sample-to-Chunk atom $atomstructure['version'] = BigEndian2Int(substr($atomdata, 0, 1)); $atomstructure['flags_raw'] = BigEndian2Int(substr($atomdata, 1, 3)); // hardcoded: 0x000 $atomstructure['number_entries'] = BigEndian2Int(substr($atomdata, 4, 4)); $stscEntriesDataOffset = 8; for ($i = 0; $i < $atomstructure['number_entries']; $i++) { $atomstructure['sample_to_chunk_table'][$i]['first_chunk'] = BigEndian2Int(substr($atomdata, $stscEntriesDataOffset, 4)); $stscEntriesDataOffset += 4; $atomstructure['sample_to_chunk_table'][$i]['samples_per_chunk'] = BigEndian2Int(substr($atomdata, $stscEntriesDataOffset, 4)); $stscEntriesDataOffset += 4; $atomstructure['sample_to_chunk_table'][$i]['sample_description'] = BigEndian2Int(substr($atomdata, $stscEntriesDataOffset, 4)); $stscEntriesDataOffset += 4; } break; case 'stsz': // Sample Table SiZe atom $atomstructure['version'] = BigEndian2Int(substr($atomdata, 0, 1)); $atomstructure['flags_raw'] = BigEndian2Int(substr($atomdata, 1, 3)); // hardcoded: 0x000 $atomstructure['sample_size'] = BigEndian2Int(substr($atomdata, 4, 4)); $atomstructure['number_entries'] = BigEndian2Int(substr($atomdata, 8, 4)); $stszEntriesDataOffset = 12; if ($atomstructure['sample_size'] == 0) { for ($i = 0; $i < $atomstructure['number_entries']; $i++) { $atomstructure['sample_size_table'][$i] = BigEndian2Int(substr($atomdata, $stszEntriesDataOffset, 4)); $stszEntriesDataOffset += 4; } } break; case 'stco': // Sample Table Chunk Offset atom $atomstructure['version'] = BigEndian2Int(substr($atomdata, 0, 1)); $atomstructure['flags_raw'] = BigEndian2Int(substr($atomdata, 1, 3)); // hardcoded: 0x000 $atomstructure['number_entries'] = BigEndian2Int(substr($atomdata, 4, 4)); $stcoEntriesDataOffset = 8; for ($i = 0; $i < $atomstructure['number_entries']; $i++) { $atomstructure['chunk_offset_table'][$i] = BigEndian2Int(substr($atomdata, $stcoEntriesDataOffset, 4)); $stcoEntriesDataOffset += 4; } break; case 'dref': // Data REFerence atom $atomstructure['version'] = BigEndian2Int(substr($atomdata, 0, 1)); $atomstructure['flags_raw'] = BigEndian2Int(substr($atomdata, 1, 3)); // hardcoded: 0x000 $atomstructure['number_entries'] = BigEndian2Int(substr($atomdata, 4, 4)); $drefDataOffset = 8; for ($i = 0; $i < $atomstructure['number_entries']; $i++) { $atomstructure['data_references'][$i]['size'] = BigEndian2Int(substr($atomdata, $drefDataOffset, 4)); $drefDataOffset += 4; $atomstructure['data_references'][$i]['type'] = substr($atomdata, $drefDataOffset, 4); $drefDataOffset += 4; $atomstructure['data_references'][$i]['version'] = BigEndian2Int(substr($atomdata, $drefDataOffset, 1)); $drefDataOffset += 1; $atomstructure['data_references'][$i]['flags_raw'] = BigEndian2Int(substr($atomdata, $drefDataOffset, 3)); // hardcoded: 0x000 $drefDataOffset += 3; $atomstructure['data_references'][$i]['data'] = substr($atomdata, $drefDataOffset, $atomstructure['data_references'][$i]['size'] - 4 - 4 - 1 - 3); $drefDataOffset += $atomstructure['data_references'][$i]['size'] - 4 - 4 - 1 - 3; $atomstructure['data_references'][$i]['flags']['self_reference'] = (bool) ($atomstructure['data_references'][$i]['flags_raw'] & 0x1); } break; case 'gmin': // base Media INformation atom $atomstructure['version'] = BigEndian2Int(substr($atomdata, 0, 1)); $atomstructure['flags_raw'] = BigEndian2Int(substr($atomdata, 1, 3)); // hardcoded: 0x000 $atomstructure['graphics_mode'] = BigEndian2Int(substr($atomdata, 4, 2)); $atomstructure['opcolor_red'] = BigEndian2Int(substr($atomdata, 6, 2)); $atomstructure['opcolor_green'] = BigEndian2Int(substr($atomdata, 8, 2)); $atomstructure['opcolor_blue'] = BigEndian2Int(substr($atomdata, 10, 2)); $atomstructure['balance'] = BigEndian2Int(substr($atomdata, 12, 2)); $atomstructure['reserved'] = BigEndian2Int(substr($atomdata, 14, 2)); break; case 'smhd': // Sound Media information HeaDer atom $atomstructure['version'] = BigEndian2Int(substr($atomdata, 0, 1)); $atomstructure['flags_raw'] = BigEndian2Int(substr($atomdata, 1, 3)); // hardcoded: 0x000 $atomstructure['balance'] = BigEndian2Int(substr($atomdata, 4, 2)); $atomstructure['reserved'] = BigEndian2Int(substr($atomdata, 6, 2)); break; case 'vmhd': // Video Media information HeaDer atom $atomstructure['version'] = BigEndian2Int(substr($atomdata, 0, 1)); $atomstructure['flags_raw'] = BigEndian2Int(substr($atomdata, 1, 3)); $atomstructure['graphics_mode'] = BigEndian2Int(substr($atomdata, 4, 2)); $atomstructure['opcolor_red'] = BigEndian2Int(substr($atomdata, 6, 2)); $atomstructure['opcolor_green'] = BigEndian2Int(substr($atomdata, 8, 2)); $atomstructure['opcolor_blue'] = BigEndian2Int(substr($atomdata, 10, 2)); $atomstructure['flags']['no_lean_ahead'] = (bool) ($atomstructure['flags_raw'] & 0x1); break; case 'hdlr': // HanDLeR reference atom $atomstructure['version'] = BigEndian2Int(substr($atomdata, 0, 1)); $atomstructure['flags_raw'] = BigEndian2Int(substr($atomdata, 1, 3)); // hardcoded: 0x000 $atomstructure['component_type'] = substr($atomdata, 4, 4); $atomstructure['component_subtype'] = substr($atomdata, 8, 4); $atomstructure['component_manufacturer'] = substr($atomdata, 12, 4); $atomstructure['component_flags_raw'] = BigEndian2Int(substr($atomdata, 16, 4)); $atomstructure['component_flags_mask'] = BigEndian2Int(substr($atomdata, 20, 4)); $atomstructure['component_name'] = Pascal2String(substr($atomdata, 24)); break; case 'mdhd': // MeDia HeaDer atom $atomstructure['version'] = BigEndian2Int(substr($atomdata, 0, 1)); $atomstructure['flags_raw'] = BigEndian2Int(substr($atomdata, 1, 3)); // hardcoded: 0x000 $atomstructure['creation_time'] = BigEndian2Int(substr($atomdata, 4, 4)); $atomstructure['modify_time'] = BigEndian2Int(substr($atomdata, 8, 4)); $atomstructure['time_scale'] = BigEndian2Int(substr($atomdata, 12, 4)); $atomstructure['duration'] = BigEndian2Int(substr($atomdata, 16, 4)); $atomstructure['language_id'] = BigEndian2Int(substr($atomdata, 20, 2)); $atomstructure['quality'] = BigEndian2Int(substr($atomdata, 22, 2)); if ($atomstructure['time_scale'] == 0) { $ThisFileInfo['error'] .= "\n" . 'Corrupt Quicktime file: mdhd.time_scale == zero'; return false; } $atomstructure['creation_time_unix'] = DateMac2Unix($atomstructure['creation_time']); $atomstructure['modify_time_unix'] = DateMac2Unix($atomstructure['modify_time']); $atomstructure['playtime_seconds'] = $atomstructure['duration'] / $atomstructure['time_scale']; $atomstructure['language'] = QuicktimeLanguageLookup($atomstructure['language_id']); break; case 'pnot': // Preview atom $atomstructure['modification_date'] = BigEndian2Int(substr($atomdata, 0, 4)); // "standard Macintosh format" $atomstructure['version_number'] = BigEndian2Int(substr($atomdata, 4, 2)); // hardcoded: 0x00 $atomstructure['atom_type'] = substr($atomdata, 6, 4); // usually: 'PICT' $atomstructure['atom_index'] = BigEndian2Int(substr($atomdata, 10, 2)); // usually: 0x01 $atomstructure['modification_date_unix'] = DateMac2Unix($atomstructure['modification_date']); break; case 'crgn': // Clipping ReGioN atom $atomstructure['region_size'] = BigEndian2Int(substr($atomdata, 0, 2)); // The Region size, Region boundary box, $atomstructure['boundary_box'] = BigEndian2Int(substr($atomdata, 2, 8)); // and Clipping region data fields $atomstructure['clipping_data'] = substr($atomdata, 10); // constitute a QuickDraw region. break; case 'load': // track LOAD settings atom $atomstructure['preload_start_time'] = BigEndian2Int(substr($atomdata, 0, 4)); $atomstructure['preload_duration'] = BigEndian2Int(substr($atomdata, 4, 4)); $atomstructure['preload_flags_raw'] = BigEndian2Int(substr($atomdata, 8, 4)); $atomstructure['default_hints_raw'] = BigEndian2Int(substr($atomdata, 12, 4)); $atomstructure['default_hints']['double_buffer'] = (bool) ($atomstructure['default_hints_raw'] & 0x20); $atomstructure['default_hints']['high_quality'] = (bool) ($atomstructure['default_hints_raw'] & 0x100); break; case 'tmcd': // TiMe CoDe atom // TiMe CoDe atom case 'chap': // CHAPter list atom // CHAPter list atom case 'sync': // SYNChronization atom // SYNChronization atom case 'scpt': // tranSCriPT atom // tranSCriPT atom case 'ssrc': // non-primary SouRCe atom for ($i = 0; $i < strlen($atomdata) % 4; $i++) { $atomstructure['track_id'][$i] = BigEndian2Int(substr($atomdata, $i * 4, 4)); } break; case 'elst': // Edit LiST atom $atomstructure['version'] = BigEndian2Int(substr($atomdata, 0, 1)); $atomstructure['flags_raw'] = BigEndian2Int(substr($atomdata, 1, 3)); // hardcoded: 0x000 $atomstructure['number_entries'] = BigEndian2Int(substr($atomdata, 4, 4)); for ($i = 0; $i < $atomstructure['number_entries']; $i++) { $atomstructure['edit_list'][$i]['track_duration'] = BigEndian2Int(substr($atomdata, 8 + $i * 12 + 0, 4)); $atomstructure['edit_list'][$i]['media_time'] = BigEndian2Int(substr($atomdata, 8 + $i * 12 + 4, 4)); $atomstructure['edit_list'][$i]['media_rate'] = BigEndian2Int(substr($atomdata, 8 + $i * 12 + 8, 4)); } break; case 'kmat': // compressed MATte atom $atomstructure['version'] = BigEndian2Int(substr($atomdata, 0, 1)); $atomstructure['flags_raw'] = BigEndian2Int(substr($atomdata, 1, 3)); // hardcoded: 0x000 $atomstructure['matte_data_raw'] = substr($atomdata, 4); break; case 'ctab': // Color TABle atom $atomstructure['color_table_seed'] = BigEndian2Int(substr($atomdata, 0, 4)); // hardcoded: 0x00000000 $atomstructure['color_table_flags'] = BigEndian2Int(substr($atomdata, 4, 2)); // hardcoded: 0x8000 $atomstructure['color_table_size'] = BigEndian2Int(substr($atomdata, 6, 2)) + 1; for ($colortableentry = 0; $colortableentry < $atomstructure['color_table_size']; $colortableentry++) { $atomstructure['color_table'][$colortableentry]['alpha'] = BigEndian2Int(substr($atomdata, 8 + $colortableentry * 8 + 0, 2)); $atomstructure['color_table'][$colortableentry]['red'] = BigEndian2Int(substr($atomdata, 8 + $colortableentry * 8 + 2, 2)); $atomstructure['color_table'][$colortableentry]['green'] = BigEndian2Int(substr($atomdata, 8 + $colortableentry * 8 + 4, 2)); $atomstructure['color_table'][$colortableentry]['blue'] = BigEndian2Int(substr($atomdata, 8 + $colortableentry * 8 + 6, 2)); } break; case 'mvhd': // MoVie HeaDer atom $atomstructure['version'] = BigEndian2Int(substr($atomdata, 0, 1)); $atomstructure['flags_raw'] = BigEndian2Int(substr($atomdata, 1, 3)); $atomstructure['creation_time'] = BigEndian2Int(substr($atomdata, 4, 4)); $atomstructure['modify_time'] = BigEndian2Int(substr($atomdata, 8, 4)); $atomstructure['time_scale'] = BigEndian2Int(substr($atomdata, 12, 4)); $atomstructure['duration'] = BigEndian2Int(substr($atomdata, 16, 4)); $atomstructure['preferred_rate'] = FixedPoint16_16(substr($atomdata, 20, 4)); $atomstructure['preferred_volume'] = FixedPoint8_8(substr($atomdata, 24, 2)); $atomstructure['reserved'] = substr($atomdata, 26, 10); $atomstructure['matrix_a'] = FixedPoint16_16(substr($atomdata, 36, 4)); $atomstructure['matrix_b'] = FixedPoint16_16(substr($atomdata, 40, 4)); $atomstructure['matrix_u'] = FixedPoint16_16(substr($atomdata, 44, 4)); $atomstructure['matrix_c'] = FixedPoint16_16(substr($atomdata, 48, 4)); $atomstructure['matrix_v'] = FixedPoint16_16(substr($atomdata, 52, 4)); $atomstructure['matrix_d'] = FixedPoint16_16(substr($atomdata, 56, 4)); $atomstructure['matrix_x'] = FixedPoint2_30(substr($atomdata, 60, 4)); $atomstructure['matrix_y'] = FixedPoint2_30(substr($atomdata, 64, 4)); $atomstructure['matrix_w'] = FixedPoint2_30(substr($atomdata, 68, 4)); $atomstructure['preview_time'] = BigEndian2Int(substr($atomdata, 72, 4)); $atomstructure['preview_duration'] = BigEndian2Int(substr($atomdata, 76, 4)); $atomstructure['poster_time'] = BigEndian2Int(substr($atomdata, 80, 4)); $atomstructure['selection_time'] = BigEndian2Int(substr($atomdata, 84, 4)); $atomstructure['selection_duration'] = BigEndian2Int(substr($atomdata, 88, 4)); $atomstructure['current_time'] = BigEndian2Int(substr($atomdata, 92, 4)); $atomstructure['next_track_id'] = BigEndian2Int(substr($atomdata, 96, 4)); if ($atomstructure['time_scale'] == 0) { $ThisFileInfo['error'] .= "\n" . 'Corrupt Quicktime file: mvhd.time_scale == zero'; return false; } $atomstructure['creation_time_unix'] = DateMac2Unix($atomstructure['creation_time']); $atomstructure['modify_time_unix'] = DateMac2Unix($atomstructure['modify_time']); $ThisFileInfo['quicktime']['time_scale'] = $atomstructure['time_scale']; $ThisFileInfo['playtime_seconds'] = $atomstructure['duration'] / $atomstructure['time_scale']; break; case 'tkhd': // TracK HeaDer atom $atomstructure['version'] = BigEndian2Int(substr($atomdata, 0, 1)); $atomstructure['flags_raw'] = BigEndian2Int(substr($atomdata, 1, 3)); $atomstructure['creation_time'] = BigEndian2Int(substr($atomdata, 4, 4)); $atomstructure['modify_time'] = BigEndian2Int(substr($atomdata, 8, 4)); $atomstructure['trackid'] = BigEndian2Int(substr($atomdata, 12, 4)); $atomstructure['reserved1'] = BigEndian2Int(substr($atomdata, 16, 4)); $atomstructure['duration'] = BigEndian2Int(substr($atomdata, 20, 4)); $atomstructure['reserved2'] = BigEndian2Int(substr($atomdata, 24, 8)); $atomstructure['layer'] = BigEndian2Int(substr($atomdata, 32, 2)); $atomstructure['alternate_group'] = BigEndian2Int(substr($atomdata, 34, 2)); $atomstructure['volume'] = FixedPoint8_8(substr($atomdata, 36, 2)); $atomstructure['reserved3'] = BigEndian2Int(substr($atomdata, 38, 2)); $atomstructure['matrix_a'] = FixedPoint16_16(substr($atomdata, 40, 4)); $atomstructure['matrix_b'] = FixedPoint16_16(substr($atomdata, 44, 4)); $atomstructure['matrix_u'] = FixedPoint16_16(substr($atomdata, 48, 4)); $atomstructure['matrix_c'] = FixedPoint16_16(substr($atomdata, 52, 4)); $atomstructure['matrix_v'] = FixedPoint16_16(substr($atomdata, 56, 4)); $atomstructure['matrix_d'] = FixedPoint16_16(substr($atomdata, 60, 4)); $atomstructure['matrix_x'] = FixedPoint2_30(substr($atomdata, 64, 4)); $atomstructure['matrix_y'] = FixedPoint2_30(substr($atomdata, 68, 4)); $atomstructure['matrix_w'] = FixedPoint2_30(substr($atomdata, 72, 4)); $atomstructure['width'] = FixedPoint16_16(substr($atomdata, 76, 4)); $atomstructure['height'] = FixedPoint16_16(substr($atomdata, 80, 4)); $atomstructure['flags']['enabled'] = (bool) ($atomstructure['flags_raw'] & 0x1); $atomstructure['flags']['in_movie'] = (bool) ($atomstructure['flags_raw'] & 0x2); $atomstructure['flags']['in_preview'] = (bool) ($atomstructure['flags_raw'] & 0x4); $atomstructure['flags']['in_poster'] = (bool) ($atomstructure['flags_raw'] & 0x8); $atomstructure['creation_time_unix'] = DateMac2Unix($atomstructure['creation_time']); $atomstructure['modify_time_unix'] = DateMac2Unix($atomstructure['modify_time']); if (!isset($ThisFileInfo['video']['resolution_x']) || !isset($ThisFileInfo['video']['resolution_y'])) { $ThisFileInfo['video']['resolution_x'] = $atomstructure['width']; $ThisFileInfo['video']['resolution_y'] = $atomstructure['height']; } $ThisFileInfo['video']['resolution_x'] = max($ThisFileInfo['video']['resolution_x'], $atomstructure['width']); $ThisFileInfo['video']['resolution_y'] = max($ThisFileInfo['video']['resolution_y'], $atomstructure['height']); if (!empty($ThisFileInfo['video']['resolution_x']) && !empty($ThisFileInfo['video']['resolution_y'])) { $ThisFileInfo['quicktime']['video']['resolution_x'] = $ThisFileInfo['video']['resolution_x']; $ThisFileInfo['quicktime']['video']['resolution_y'] = $ThisFileInfo['video']['resolution_y']; } else { unset($ThisFileInfo['video']['resolution_x']); unset($ThisFileInfo['video']['resolution_y']); unset($ThisFileInfo['quicktime']['video']); } break; case 'mdat': // Media DATa atom // Media DATa atom case 'free': // FREE space atom // FREE space atom case 'skip': // SKIP atom // SKIP atom case 'wide': // 64-bit expansion placeholder atom // 'mdat' data is too big to deal with, contains no useful metadata // 'free', 'skip' and 'wide' are just padding, contains no useful data at all // When writing QuickTime files, it is sometimes necessary to update an atom's size. // It is impossible to update a 32-bit atom to a 64-bit atom since the 32-bit atom // is only 8 bytes in size, and the 64-bit atom requires 16 bytes. Therefore, QuickTime // puts an 8-byte placeholder atom before any atoms it may have to update the size of. // In this way, if the atom needs to be converted from a 32-bit to a 64-bit atom, the // placeholder atom can be overwritten to obtain the necessary 8 extra bytes. // The placeholder atom has a type of kWideAtomPlaceholderType ( 'wide' ). break; default: $ThisFileInfo['warning'] .= "\n" . 'Unknown QuickTime atom type: "' . $atomname . '" at offset ' . $baseoffset; $atomstructure['data'] = $atomdata; break; } array_pop($atomHierarchy); return $atomstructure; }