module.audio-video.real.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.real.php                                 //
// module for analyzing Real Audio/Video files                 //
// dependencies: module.audio-video.riff.php                   //
//                                                            ///
/////////////////////////////////////////////////////////////////

getid3_lib::IncludeDependency(GETID3_INCLUDEPATH.'module.audio-video.riff.php', __FILE__, true);

class getid3_real
{

	function getid3_real(&$fd, &$ThisFileInfo) {
		$ThisFileInfo['fileformat']       = 'real';
		$ThisFileInfo['bitrate']          = 0;
		$ThisFileInfo['playtime_seconds'] = 0;

		fseek($fd, $ThisFileInfo['avdataoffset'], SEEK_SET);
		$ChunkCounter = 0;
		while (ftell($fd) < $ThisFileInfo['avdataend']) {
			$ChunkData  = fread($fd, 8);
			$ChunkName  =                           substr($ChunkData, 0, 4);
			$ChunkSize  = getid3_lib::BigEndian2Int(substr($ChunkData, 4, 4));

			if ($ChunkName == '.ra'."\xFD") {
				$ChunkData .= fread($fd, $ChunkSize - 8);
				if ($this->ParseOldRAheader(substr($ChunkData, 0, 128), $ThisFileInfo['real']['old_ra_header'])) {
					$ThisFileInfo['audio']['dataformat']      = 'real';
					$ThisFileInfo['audio']['lossless']        = false;
					$ThisFileInfo['audio']['sample_rate']     = $ThisFileInfo['real']['old_ra_header']['sample_rate'];
					$ThisFileInfo['audio']['bits_per_sample'] = $ThisFileInfo['real']['old_ra_header']['bits_per_sample'];
					$ThisFileInfo['audio']['channels']        = $ThisFileInfo['real']['old_ra_header']['channels'];

					$ThisFileInfo['playtime_seconds']         = 60 * ($ThisFileInfo['real']['old_ra_header']['audio_bytes'] / $ThisFileInfo['real']['old_ra_header']['bytes_per_minute']);
					$ThisFileInfo['audio']['bitrate']         =  8 * ($ThisFileInfo['real']['old_ra_header']['audio_bytes'] / $ThisFileInfo['playtime_seconds']);
					$ThisFileInfo['audio']['codec']           = $this->RealAudioCodecFourCClookup($ThisFileInfo['real']['old_ra_header']['fourcc'], $ThisFileInfo['audio']['bitrate']);

					foreach ($ThisFileInfo['real']['old_ra_header']['comments'] as $key => $valuearray) {
						if (strlen(trim($valuearray[0])) > 0) {
							$ThisFileInfo['real']['comments'][$key][] = trim($valuearray[0]);
						}
					}
					return true;
				}
				$ThisFileInfo['error'][] = 'There was a problem parsing this RealAudio file. Please submit it for analysis to http://www.getid3.org/upload/ or [e-mail]';
				unset($ThisFileInfo['bitrate']);
				unset($ThisFileInfo['playtime_seconds']);
				return false;
			}

			// shortcut
			$ThisFileInfo['real']['chunks'][$ChunkCounter] = array();
			$thisfile_real_chunks_currentchunk = &$ThisFileInfo['real']['chunks'][$ChunkCounter];

			$thisfile_real_chunks_currentchunk['name']   = $ChunkName;
			$thisfile_real_chunks_currentchunk['offset'] = ftell($fd) - 8;
			$thisfile_real_chunks_currentchunk['length'] = $ChunkSize;
			if (($thisfile_real_chunks_currentchunk['offset'] + $thisfile_real_chunks_currentchunk['length']) > $ThisFileInfo['avdataend']) {
				$ThisFileInfo['warning'][] = 'Chunk "'.$thisfile_real_chunks_currentchunk['name'].'" at offset '.$thisfile_real_chunks_currentchunk['offset'].' claims to be '.$thisfile_real_chunks_currentchunk['length'].' bytes long, which is beyond end of file';
				return false;
			}

			if ($ChunkSize > (GETID3_FREAD_BUFFER_SIZE + 8)) {

				$ChunkData .= fread($fd, GETID3_FREAD_BUFFER_SIZE - 8);
				fseek($fd, $thisfile_real_chunks_currentchunk['offset'] + $ChunkSize, SEEK_SET);

			} else {

				$ChunkData .= fread($fd, $ChunkSize - 8);

			}
			$offset = 8;

			switch ($ChunkName) {

				case '.RMF': // RealMedia File Header
					$thisfile_real_chunks_currentchunk['object_version'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 2));
					$offset += 2;
					switch ($thisfile_real_chunks_currentchunk['object_version']) {

						case 0:
							$thisfile_real_chunks_currentchunk['file_version']  = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 4));
							$offset += 4;
							$thisfile_real_chunks_currentchunk['headers_count'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 4));
							$offset += 4;
							break;

						default:
							//$ThisFileInfo['warning'][] = 'Expected .RMF-object_version to be "0", actual value is "'.$thisfile_real_chunks_currentchunk['object_version'].'" (should not be a problem)';
							break;

					}
					break;


				case 'PROP': // Properties Header
					$thisfile_real_chunks_currentchunk['object_version']      = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 2));
					$offset += 2;
					if ($thisfile_real_chunks_currentchunk['object_version'] == 0) {
						$thisfile_real_chunks_currentchunk['max_bit_rate']    = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 4));
						$offset += 4;
						$thisfile_real_chunks_currentchunk['avg_bit_rate']    = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 4));
						$offset += 4;
						$thisfile_real_chunks_currentchunk['max_packet_size'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 4));
						$offset += 4;
						$thisfile_real_chunks_currentchunk['avg_packet_size'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 4));
						$offset += 4;
						$thisfile_real_chunks_currentchunk['num_packets']     = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 4));
						$offset += 4;
						$thisfile_real_chunks_currentchunk['duration']        = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 4));
						$offset += 4;
						$thisfile_real_chunks_currentchunk['preroll']         = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 4));
						$offset += 4;
						$thisfile_real_chunks_currentchunk['index_offset']    = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 4));
						$offset += 4;
						$thisfile_real_chunks_currentchunk['data_offset']     = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 4));
						$offset += 4;
						$thisfile_real_chunks_currentchunk['num_streams']     = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 2));
						$offset += 2;
						$thisfile_real_chunks_currentchunk['flags_raw']       = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 2));
						$offset += 2;
						$ThisFileInfo['playtime_seconds'] = $thisfile_real_chunks_currentchunk['duration'] / 1000;
						if ($thisfile_real_chunks_currentchunk['duration'] > 0) {
							$ThisFileInfo['bitrate'] += $thisfile_real_chunks_currentchunk['avg_bit_rate'];
						}
						$thisfile_real_chunks_currentchunk['flags']['save_enabled']   = (bool) ($thisfile_real_chunks_currentchunk['flags_raw'] & 0x0001);
						$thisfile_real_chunks_currentchunk['flags']['perfect_play']   = (bool) ($thisfile_real_chunks_currentchunk['flags_raw'] & 0x0002);
						$thisfile_real_chunks_currentchunk['flags']['live_broadcast'] = (bool) ($thisfile_real_chunks_currentchunk['flags_raw'] & 0x0004);
					}
					break;

				case 'MDPR': // Media Properties Header
					$thisfile_real_chunks_currentchunk['object_version']         = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 2));
					$offset += 2;
					if ($thisfile_real_chunks_currentchunk['object_version'] == 0) {
						$thisfile_real_chunks_currentchunk['stream_number']      = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 2));
						$offset += 2;
						$thisfile_real_chunks_currentchunk['max_bit_rate']       = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 4));
						$offset += 4;
						$thisfile_real_chunks_currentchunk['avg_bit_rate']       = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 4));
						$offset += 4;
						$thisfile_real_chunks_currentchunk['max_packet_size']    = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 4));
						$offset += 4;
						$thisfile_real_chunks_currentchunk['avg_packet_size']    = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 4));
						$offset += 4;
						$thisfile_real_chunks_currentchunk['start_time']         = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 4));
						$offset += 4;
						$thisfile_real_chunks_currentchunk['preroll']            = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 4));
						$offset += 4;
						$thisfile_real_chunks_currentchunk['duration']           = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 4));
						$offset += 4;
						$thisfile_real_chunks_currentchunk['stream_name_size']   = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 1));
						$offset += 1;
						$thisfile_real_chunks_currentchunk['stream_name']        = substr($ChunkData, $offset, $thisfile_real_chunks_currentchunk['stream_name_size']);
						$offset += $thisfile_real_chunks_currentchunk['stream_name_size'];
						$thisfile_real_chunks_currentchunk['mime_type_size']     = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 1));
						$offset += 1;
						$thisfile_real_chunks_currentchunk['mime_type']          = substr($ChunkData, $offset, $thisfile_real_chunks_currentchunk['mime_type_size']);
						$offset += $thisfile_real_chunks_currentchunk['mime_type_size'];
						$thisfile_real_chunks_currentchunk['type_specific_len']  = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 4));
						$offset += 4;
						$thisfile_real_chunks_currentchunk['type_specific_data'] = substr($ChunkData, $offset, $thisfile_real_chunks_currentchunk['type_specific_len']);
						$offset += $thisfile_real_chunks_currentchunk['type_specific_len'];

						// shortcut
						$thisfile_real_chunks_currentchunk_typespecificdata = &$thisfile_real_chunks_currentchunk['type_specific_data'];