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Diffstat (limited to 'getid3/module.audio-video.swf.php')
| -rw-r--r-- | getid3/module.audio-video.swf.php | 149 |
1 files changed, 0 insertions, 149 deletions
diff --git a/getid3/module.audio-video.swf.php b/getid3/module.audio-video.swf.php deleted file mode 100644 index c3dbb36..0000000 --- a/getid3/module.audio-video.swf.php +++ /dev/null @@ -1,149 +0,0 @@ -<?php -///////////////////////////////////////////////////////////////// -/// getID3() by James Heinrich <info@getid3.org> // -// available at http://getid3.sourceforge.net // -// or http://www.getid3.org // -///////////////////////////////////////////////////////////////// -// See readme.txt for more details // -///////////////////////////////////////////////////////////////// -// // -// module.audio-video.swf.php // -// module for analyzing Shockwave Flash files // -// dependencies: NONE // -// /// -///////////////////////////////////////////////////////////////// - - -class getid3_swf -{ - - function getid3_swf(&$fd, &$ThisFileInfo, $ReturnAllTagData=false) { -//$start_time = microtime(true); - $ThisFileInfo['fileformat'] = 'swf'; - $ThisFileInfo['video']['dataformat'] = 'swf'; - - // http://www.openswf.org/spec/SWFfileformat.html - - fseek($fd, $ThisFileInfo['avdataoffset'], SEEK_SET); - - $SWFfileData = fread($fd, $ThisFileInfo['avdataend'] - $ThisFileInfo['avdataoffset']); // 8 + 2 + 2 + max(9) bytes NOT including Frame_Size RECT data - - $ThisFileInfo['swf']['header']['signature'] = substr($SWFfileData, 0, 3); - switch ($ThisFileInfo['swf']['header']['signature']) { - case 'FWS': - $ThisFileInfo['swf']['header']['compressed'] = false; - break; - - case 'CWS': - $ThisFileInfo['swf']['header']['compressed'] = true; - break; - - default: - $ThisFileInfo['error'][] = 'Expecting "FWS" or "CWS" at offset '.$ThisFileInfo['avdataoffset'].', found "'.$ThisFileInfo['swf']['header']['signature'].'"'; - unset($ThisFileInfo['swf']); - unset($ThisFileInfo['fileformat']); - return false; - break; - } - $ThisFileInfo['swf']['header']['version'] = getid3_lib::LittleEndian2Int(substr($SWFfileData, 3, 1)); - $ThisFileInfo['swf']['header']['length'] = getid3_lib::LittleEndian2Int(substr($SWFfileData, 4, 4)); - -//echo __LINE__.'='.number_format(microtime(true) - $start_time, 3).'<br>'; - - if ($ThisFileInfo['swf']['header']['compressed']) { - - $SWFHead = substr($SWFfileData, 0, 8); - $SWFfileData = substr($SWFfileData, 8); - if ($decompressed = @gzuncompress($SWFfileData)) { - - $SWFfileData = $SWFHead.$decompressed; - - } else { - - $ThisFileInfo['error'][] = 'Error decompressing compressed SWF data ('.strlen($SWFfileData).' bytes compressed, should be '.($ThisFileInfo['swf']['header']['length'] - 8).' bytes uncompressed)'; - return false; - - } - - } -//echo __LINE__.'='.number_format(microtime(true) - $start_time, 3).'<br>'; - - $FrameSizeBitsPerValue = (ord(substr($SWFfileData, 8, 1)) & 0xF8) >> 3; - $FrameSizeDataLength = ceil((5 + (4 * $FrameSizeBitsPerValue)) / 8); - $FrameSizeDataString = str_pad(decbin(ord(substr($SWFfileData, 8, 1)) & 0x07), 3, '0', STR_PAD_LEFT); - for ($i = 1; $i < $FrameSizeDataLength; $i++) { - $FrameSizeDataString .= str_pad(decbin(ord(substr($SWFfileData, 8 + $i, 1))), 8, '0', STR_PAD_LEFT); - } - list($X1, $X2, $Y1, $Y2) = explode("\n", wordwrap($FrameSizeDataString, $FrameSizeBitsPerValue, "\n", 1)); - $ThisFileInfo['swf']['header']['frame_width'] = getid3_lib::Bin2Dec($X2); - $ThisFileInfo['swf']['header']['frame_height'] = getid3_lib::Bin2Dec($Y2); - - // http://www-lehre.informatik.uni-osnabrueck.de/~fbstark/diplom/docs/swf/Flash_Uncovered.htm - // Next in the header is the frame rate, which is kind of weird. - // It is supposed to be stored as a 16bit integer, but the first byte - // (or last depending on how you look at it) is completely ignored. - // Example: 0x000C -> 0x0C -> 12 So the frame rate is 12 fps. - - // Byte at (8 + $FrameSizeDataLength) is always zero and ignored - $ThisFileInfo['swf']['header']['frame_rate'] = getid3_lib::LittleEndian2Int(substr($SWFfileData, 9 + $FrameSizeDataLength, 1)); - $ThisFileInfo['swf']['header']['frame_count'] = getid3_lib::LittleEndian2Int(substr($SWFfileData, 10 + $FrameSizeDataLength, 2)); - - $ThisFileInfo['video']['frame_rate'] = $ThisFileInfo['swf']['header']['frame_rate']; - $ThisFileInfo['video']['resolution_x'] = intval(round($ThisFileInfo['swf']['header']['frame_width'] / 20)); - $ThisFileInfo['video']['resolution_y'] = intval(round($ThisFileInfo['swf']['header']['frame_height'] / 20)); - $ThisFileInfo['video']['pixel_aspect_ratio'] = (float) 1; - - if (($ThisFileInfo['swf']['header']['frame_count'] > 0) && ($ThisFileInfo['swf']['header']['frame_rate'] > 0)) { - $ThisFileInfo['playtime_seconds'] = $ThisFileInfo['swf']['header']['frame_count'] / $ThisFileInfo['swf']['header']['frame_rate']; - } -//echo __LINE__.'='.number_format(microtime(true) - $start_time, 3).'<br>'; - - - // SWF tags - - $CurrentOffset = 12 + $FrameSizeDataLength; - $SWFdataLength = strlen($SWFfileData); - - while ($CurrentOffset < $SWFdataLength) { -//echo __LINE__.'='.number_format(microtime(true) - $start_time, 3).'<br>'; - - $TagIDTagLength = getid3_lib::LittleEndian2Int(substr($SWFfileData, $CurrentOffset, 2)); - $TagID = ($TagIDTagLength & 0xFFFC) >> 6; - $TagLength = ($TagIDTagLength & 0x003F); - $CurrentOffset += 2; - if ($TagLength == 0x3F) { - $TagLength = getid3_lib::LittleEndian2Int(substr($SWFfileData, $CurrentOffset, 4)); - $CurrentOffset += 4; - } - - unset($TagData); - $TagData['offset'] = $CurrentOffset; - $TagData['size'] = $TagLength; - $TagData['id'] = $TagID; - $TagData['data'] = substr($SWFfileData, $CurrentOffset, $TagLength); - switch ($TagID) { - case 0: // end of movie - break 2; - - case 9: // Set background color - //$ThisFileInfo['swf']['tags'][] = $TagData; - $ThisFileInfo['swf']['bgcolor'] = strtoupper(str_pad(dechex(getid3_lib::BigEndian2Int($TagData['data'])), 6, '0', STR_PAD_LEFT)); - break; - - default: - if ($ReturnAllTagData) { - $ThisFileInfo['swf']['tags'][] = $TagData; - } - break; - } - - $CurrentOffset += $TagLength; - } - - return true; - } - -} - - -?>
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