module.audio-video.quicktime.php

CMS系统 提供学习研究修改最好了 比流行的一些CMS简单 但是更容易理解 是帮助你学习PHPCMS系统的好东东哦

<?php
/////////////////////////////////////////////////////////////////
/// getID3() by James Heinrich <[e-mail]>               //
//  available at http://getid3.sourceforge.net                 //
//            or http://www.getid3.org                         //
/////////////////////////////////////////////////////////////////
// See readme.txt for more details                             //
/////////////////////////////////////////////////////////////////
//                                                             //
// module.audio-video.quicktime.php                            //
// module for analyzing Quicktime and MP3-in-MP4 files         //
// dependencies: module.audio.mp3.php                          //
//                                                            ///
/////////////////////////////////////////////////////////////////

getid3_lib::IncludeDependency(GETID3_INCLUDEPATH.'module.audio.mp3.php', __FILE__, true);

class getid3_quicktime
{

	function getid3_quicktime(&$fd, &$ThisFileInfo, $ReturnAtomData=true, $ParseAllPossibleAtoms=false) {

		$ThisFileInfo['fileformat'] = 'quicktime';

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

		$offset      = 0;
		$atomcounter = 0;

		while ($offset < $ThisFileInfo['avdataend']) {
			fseek($fd, $offset, SEEK_SET);
			$AtomHeader = fread($fd, 8);

			$atomsize = getid3_lib::BigEndian2Int(substr($AtomHeader, 0, 4));
			$atomname =               substr($AtomHeader, 4, 4);
			$ThisFileInfo['quicktime'][$atomname]['name']   = $atomname;
			$ThisFileInfo['quicktime'][$atomname]['size']   = $atomsize;
			$ThisFileInfo['quicktime'][$atomname]['offset'] = $offset;

			if (($offset + $atomsize) > $ThisFileInfo['avdataend']) {
				$ThisFileInfo['error'][] = 'Atom at offset '.$offset.' claims to go beyond end-of-file (length: '.$atomsize.' bytes)';
				return false;
			}

			if ($atomsize == 0) {
				// Furthermore, for historical reasons the list of atoms is optionally
				// terminated by a 32-bit integer set to 0. If you are writing a program
				// to read user data atoms, you should allow for the terminating 0.
				break;
			}
			switch ($atomname) {
				case 'mdat': // Media DATa atom
					// 'mdat' contains the actual data for the audio/video
					if (($atomsize > 8) && (!isset($ThisFileInfo['avdataend_tmp']) || ($ThisFileInfo['quicktime'][$atomname]['size'] > ($ThisFileInfo['avdataend_tmp'] - $ThisFileInfo['avdataoffset'])))) {

						$ThisFileInfo['avdataoffset'] = $ThisFileInfo['quicktime'][$atomname]['offset'] + 8;
						$OldAVDataEnd                 = $ThisFileInfo['avdataend'];
						$ThisFileInfo['avdataend']    = $ThisFileInfo['quicktime'][$atomname]['offset'] + $ThisFileInfo['quicktime'][$atomname]['size'];

						if (getid3_mp3::MPEGaudioHeaderValid(getid3_mp3::MPEGaudioHeaderDecode(fread($fd, 4)))) {
							getid3_mp3::getOnlyMPEGaudioInfo($fd, $ThisFileInfo, $ThisFileInfo['avdataoffset'], false);
							if (isset($ThisFileInfo['mpeg']['audio'])) {
								$ThisFileInfo['audio']['dataformat']   = 'mp3';
								$ThisFileInfo['audio']['codec']        = (!empty($ThisFileInfo['mpeg']['audio']['encoder']) ? $ThisFileInfo['mpeg']['audio']['encoder'] : (!empty($ThisFileInfo['mpeg']['audio']['codec']) ? $ThisFileInfo['mpeg']['audio']['codec'] : (!empty($ThisFileInfo['mpeg']['audio']['LAME']) ? 'LAME' :'mp3')));
								$ThisFileInfo['audio']['sample_rate']  = $ThisFileInfo['mpeg']['audio']['sample_rate'];
								$ThisFileInfo['audio']['channels']     = $ThisFileInfo['mpeg']['audio']['channels'];
								$ThisFileInfo['audio']['bitrate']      = $ThisFileInfo['mpeg']['audio']['bitrate'];
								$ThisFileInfo['audio']['bitrate_mode'] = strtolower($ThisFileInfo['mpeg']['audio']['bitrate_mode']);
								$ThisFileInfo['bitrate']               = $ThisFileInfo['audio']['bitrate'];
							}
						}
						$ThisFileInfo['avdataend'] = $OldAVDataEnd;
						unset($OldAVDataEnd);

					}
					break;

				case 'free': // FREE space atom
				case 'skip': // SKIP atom
				case 'wide': // 64-bit expansion placeholder atom
					// 'free', 'skip' and 'wide' are just padding, contains no useful data at all
					break;

				default:
					$atomHierarchy = array();
					$ThisFileInfo['quicktime'][$atomname] = $this->QuicktimeParseAtom($atomname, $atomsize, fread($fd, $atomsize), $ThisFileInfo, $offset, $atomHierarchy, $ParseAllPossibleAtoms);
					break;
			}

			$offset += $atomsize;
			$atomcounter++;
		}

		if (!empty($ThisFileInfo['avdataend_tmp'])) {
			// this value is assigned to a temp value and then erased because
			// otherwise any atoms beyond the 'mdat' atom would not get parsed
			$ThisFileInfo['avdataend'] = $ThisFileInfo['avdataend_tmp'];
			unset($ThisFileInfo['avdataend_tmp']);
		}

		if (!isset($ThisFileInfo['bitrate']) && isset($ThisFileInfo['playtime_seconds'])) {
			$ThisFileInfo['bitrate'] = (($ThisFileInfo['avdataend'] - $ThisFileInfo['avdataoffset']) * 8) / $ThisFileInfo['playtime_seconds'];
		}
		if (isset($ThisFileInfo['bitrate']) && !isset($ThisFileInfo['audio']['bitrate']) && !isset($ThisFileInfo['quicktime']['video'])) {
			$ThisFileInfo['audio']['bitrate'] = $ThisFileInfo['bitrate'];
		}

		if (($ThisFileInfo['audio']['dataformat'] == 'mp4') && empty($ThisFileInfo['video']['resolution_x'])) {
			$ThisFileInfo['fileformat'] = 'mp4';
			$ThisFileInfo['mime_type']  = 'audio/mp4';
			unset($ThisFileInfo['video']['dataformat']);
		}

		if (!$ReturnAtomData) {
			unset($ThisFileInfo['quicktime']['moov']);
		}

		if (empty($ThisFileInfo['audio']['dataformat']) && !empty($ThisFileInfo['quicktime']['audio'])) {
			$ThisFileInfo['audio']['dataformat'] = 'quicktime';
		}
		if (empty($ThisFileInfo['video']['dataformat']) && !empty($ThisFileInfo['quicktime']['video'])) {
			$ThisFileInfo['video']['dataformat'] = 'quicktime';
		}

		return true;
	}

	function QuicktimeParseAtom($atomname, $atomsize, $atomdata, &$ThisFileInfo, $baseoffset, &$atomHierarchy, $ParseAllPossibleAtoms) {
		// 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
			case 'trak': // TRAcK container atom
			case 'clip': // CLIPping container atom
			case 'matt': // track MATTe container atom
			case 'edts': // EDiTS container atom
			case 'tref': // Track REFerence container atom
			case 'mdia': // MeDIA container atom
			case 'minf': // Media INFormation container atom
			case 'dinf': // Data INFormation container atom
			case 'udta': // User DaTA container atom
			case 'stbl': // Sample TaBLe container atom
			case 'cmov': // Compressed MOVie container atom
			case 'rmra': // Reference Movie Record Atom
			case 'rmda': // Reference Movie Descriptor Atom
			case 'gmhd': // Generic Media info HeaDer atom (seen on QTVR)
				$atomstructure['subatoms'] = $this->QuicktimeParseContainerAtom($atomdata, $ThisFileInfo, $baseoffset + 8, $atomHierarchy, $ParseAllPossibleAtoms);
				break;


			case 'ヽpy':
			case 'ヾay':
			case 'ヾir':
			case '〆d1':
			case '〆d2':
			case '〆d3':
			case '〆d4':
			case '〆d5':
			case '〆d6':
			case '〆d7':
			case '〆d8':
			case '〆d9':
			case 'ゝmt':
			case '﹊nf':
			case '﹑rd':
			case '﹑rf':
			case '﹔eq':
			case '﹕rc':
			case '﹚rt':
			case '﹏am':
			case 'ヽmt':
			case '﹚rn':
			case '﹉st':
			case '﹎ak':
			case '﹎od':
			case '㏄RD':
			case '﹕wr':
			case '゛ut':
			case '〢RT':
			case '﹖rk':
			case '゛lb':
			case 'ヽom':
			case 'ゞen':
			case '﹐pe':
			case '﹗rl':
			case '〆nc':
				$atomstructure['data_length'] = getid3_lib::BigEndian2Int(substr($atomdata,  0, 2));
				$atomstructure['language_id'] = getid3_lib::BigEndian2Int(substr($atomdata,  2, 2));
				$atomstructure['data']        =                           substr($atomdata,  4);

				$atomstructure['language']    = $this->QuicktimeLanguageLookup($atomstructure['language_id']);
				if (empty($ThisFileInfo['comments']['language']) || (!in_array($atomstructure['language'], $ThisFileInfo['comments']['language']))) {
					$ThisFileInfo['comments']['language'][] = $atomstructure['language'];
				}
				$this->CopyToAppropriateCommentsSection($atomname, $atomstructure['data'], $ThisFileInfo);
				break;


			case 'play': // auto-PLAY atom
				$atomstructure['autoplay']            = (bool) getid3_lib::BigEndian2Int(substr($atomdata,  0, 1));

				$ThisFileInfo['quicktime']['autoplay'] = $atomstructure['autoplay'];
				break;


			case 'WLOC': // Window LOCation atom
				$atomstructure['location_x']  = getid3_lib::BigEndian2Int(substr($atomdata,  0, 2));
				$atomstructure['location_y']  = getid3_lib::BigEndian2Int(substr($atomdata,  2, 2));
				break;


			case 'LOOP': // LOOPing atom