Вход Регистрация
Файл: F12/getid3/module.audio-video.swf.php
Строк: 162
<?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) {
        
$ThisFileInfo['fileformat']          = 'swf';
        
$ThisFileInfo['video']['dataformat'] = 'swf';

        
// http://www.openswf.org/spec/SWFfileformat.html

        
fseek($fd$ThisFileInfo['avdataoffset'], SEEK_SET);

//echo 'reading '.($ThisFileInfo['avdataend'] - $ThisFileInfo['avdataoffset']).' bytes<br>';
        
$SWFfileData fread($fd$ThisFileInfo['avdataend'] - $ThisFileInfo['avdataoffset']); // 8 + 2 + 2 + max(9) bytes NOT including Frame_Size RECT data

        
$ThisFileInfo['swf']['header']['signature']  = substr($SWFfileData03);
        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;
        }
        
$ThisFileInfo['swf']['header']['version'] = getid3_lib::LittleEndian2Int(substr($SWFfileData31));
        
$ThisFileInfo['swf']['header']['length']  = getid3_lib::LittleEndian2Int(substr($SWFfileData44));

//echo '1<br>';
        
if ($ThisFileInfo['swf']['header']['compressed']) {

//echo '2<br>';
//            $foo = substr($SWFfileData, 8, 4096);
//            echo '['.strlen($foo).']<br>';
//            $fee = gzuncompress($foo);
//            echo '('.strlen($fee).')<br>';
//return false;
//echo '<br>time: '.time().'<br>';
//return false;
            
if ($UncompressedFileData gzuncompress(substr($SWFfileData8))) {

//echo '3<br>';
                
$SWFfileData substr($SWFfileData08).$UncompressedFileData;

            } else {

//echo '4<br>';
                
$ThisFileInfo['error'][] = 'Error decompressing compressed SWF data';
                return 
false;

            }

        }

        
$FrameSizeBitsPerValue = (ord(substr($SWFfileData81)) & 0xF8) >> 3;
        
$FrameSizeDataLength   ceil((+ ($FrameSizeBitsPerValue)) / 8);
        
$FrameSizeDataString   str_pad(decbin(ord(substr($SWFfileData81)) & 0x07), 3'0'STR_PAD_LEFT);
        for (
$i 1$i $FrameSizeDataLength$i++) {
            
$FrameSizeDataString .= str_pad(decbin(ord(substr($SWFfileData$i1))), 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,  $FrameSizeDataLength1));
        
$ThisFileInfo['swf']['header']['frame_count'] = getid3_lib::LittleEndian2Int(substr($SWFfileData10 $FrameSizeDataLength2));

        
$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'];
        }


        
// SWF tags

        
$CurrentOffset 12 $FrameSizeDataLength;
        
$SWFdataLength strlen($SWFfileData);

        while (
$CurrentOffset $SWFdataLength) {

            
$TagIDTagLength getid3_lib::LittleEndian2Int(substr($SWFfileData$CurrentOffset2));
            
$TagID     = ($TagIDTagLength 0xFFFC) >> 6;
            
$TagLength = ($TagIDTagLength 0x003F);
            
$CurrentOffset += 2;
            if (
$TagLength == 0x3F) {
                
$TagLength getid3_lib::LittleEndian2Int(substr($SWFfileData$CurrentOffset4));
                
$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;
    }

}


?>
Онлайн: 0
Реклама