| 1 |  |  | <?php | 
            
                                                                                                            
                            
            
                                    
            
            
                | 2 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 3 |  |  | ///////////////////////////////////////////////////////////////// | 
            
                                                                                                            
                            
            
                                    
            
            
                | 4 |  |  | /// getID3() by James Heinrich <[email protected]>               // | 
            
                                                                                                            
                            
            
                                    
            
            
                | 5 |  |  | //  available at https://github.com/JamesHeinrich/getID3       // | 
            
                                                                                                            
                            
            
                                    
            
            
                | 6 |  |  | //            or https://www.getid3.org                        // | 
            
                                                                                                            
                            
            
                                    
            
            
                | 7 |  |  | //            or http://getid3.sourceforge.net                 // | 
            
                                                                                                            
                            
            
                                    
            
            
                | 8 |  |  | //  see readme.txt for more details                            // | 
            
                                                                                                            
                            
            
                                    
            
            
                | 9 |  |  | ///////////////////////////////////////////////////////////////// | 
            
                                                                                                            
                            
            
                                    
            
            
                | 10 |  |  | //                                                             // | 
            
                                                                                                            
                            
            
                                    
            
            
                | 11 |  |  | // module.audio.flac.php                                       // | 
            
                                                                                                            
                            
            
                                    
            
            
                | 12 |  |  | // module for analyzing FLAC and OggFLAC audio files           // | 
            
                                                                                                            
                            
            
                                    
            
            
                | 13 |  |  | // dependencies: module.audio.ogg.php                          // | 
            
                                                                                                            
                            
            
                                    
            
            
                | 14 |  |  | //                                                            /// | 
            
                                                                                                            
                            
            
                                    
            
            
                | 15 |  |  | ///////////////////////////////////////////////////////////////// | 
            
                                                                                                            
                            
            
                                    
            
            
                | 16 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 17 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 18 |  |  | getid3_lib::IncludeDependency(GETID3_INCLUDEPATH.'module.audio.ogg.php', __FILE__, true); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 19 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 20 |  |  | /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 21 |  |  | * @tutorial http://flac.sourceforge.net/format.html | 
            
                                                                                                            
                            
            
                                    
            
            
                | 22 |  |  | */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 23 |  |  | class getid3_flac extends getid3_handler | 
            
                                                                                                            
                            
            
                                    
            
            
                | 24 |  |  | { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 25 |  |  | 	const syncword = 'fLaC'; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 26 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 27 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 28 |  |  | 	 * @return bool | 
            
                                                                                                            
                            
            
                                    
            
            
                | 29 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 30 |  |  | 	public function Analyze() { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 31 |  |  | 		$info = &$this->getid3->info; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 32 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 33 |  |  | 		$this->fseek($info['avdataoffset']); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 34 |  |  | 		$StreamMarker = $this->fread(4); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 35 |  |  | 		if ($StreamMarker != self::syncword) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 36 |  |  | 			return $this->error('Expecting "'.getid3_lib::PrintHexBytes(self::syncword).'" at offset '.$info['avdataoffset'].', found "'.getid3_lib::PrintHexBytes($StreamMarker).'"'); | 
                            
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                | 37 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 38 |  |  | 		$info['fileformat']            = 'flac'; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 39 |  |  | 		$info['audio']['dataformat']   = 'flac'; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 40 |  |  | 		$info['audio']['bitrate_mode'] = 'vbr'; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 41 |  |  | 		$info['audio']['lossless']     = true; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 42 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 43 |  |  | 		// parse flac container | 
            
                                                                                                            
                            
            
                                    
            
            
                | 44 |  |  | 		return $this->parseMETAdata(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 45 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 46 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 47 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 48 |  |  | 	 * @return bool | 
            
                                                                                                            
                            
            
                                    
            
            
                | 49 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 50 |  |  | 	public function parseMETAdata() { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 51 |  |  | 		$info = &$this->getid3->info; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 52 |  |  | 		do { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 53 |  |  | 			$BlockOffset   = $this->ftell(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 54 |  |  | 			$BlockHeader   = $this->fread(4); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 55 |  |  | 			$LBFBT         = getid3_lib::BigEndian2Int(substr($BlockHeader, 0, 1));  // LBFBT = LastBlockFlag + BlockType | 
            
                                                                                                            
                            
            
                                    
            
            
                | 56 |  |  | 			$LastBlockFlag = (bool) ($LBFBT & 0x80); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 57 |  |  | 			$BlockType     =        ($LBFBT & 0x7F); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 58 |  |  | 			$BlockLength   = getid3_lib::BigEndian2Int(substr($BlockHeader, 1, 3)); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 59 |  |  | 			$BlockTypeText = self::metaBlockTypeLookup($BlockType); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 60 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 61 |  |  | 			if (($BlockOffset + 4 + $BlockLength) > $info['avdataend']) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 62 |  |  | 				$this->warning('METADATA_BLOCK_HEADER.BLOCK_TYPE ('.$BlockTypeText.') at offset '.$BlockOffset.' extends beyond end of file'); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 63 |  |  | 				break; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 64 |  |  | 			} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 65 |  |  | 			if ($BlockLength < 1) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 66 |  |  | 				if ($BlockTypeText != 'reserved') { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 67 |  |  | 					// probably supposed to be zero-length | 
            
                                                                                                            
                            
            
                                    
            
            
                | 68 |  |  | 					$this->warning('METADATA_BLOCK_HEADER.BLOCK_LENGTH ('.$BlockTypeText.') at offset '.$BlockOffset.' is zero bytes'); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 69 |  |  | 					continue; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 70 |  |  | 				} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 71 |  |  | 				$this->error('METADATA_BLOCK_HEADER.BLOCK_LENGTH ('.$BlockLength.') at offset '.$BlockOffset.' is invalid'); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 72 |  |  | 				break; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 73 |  |  | 			} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 74 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 75 |  |  | 			$info['flac'][$BlockTypeText]['raw'] = array(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 76 |  |  | 			$BlockTypeText_raw = &$info['flac'][$BlockTypeText]['raw']; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 77 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 78 |  |  | 			$BlockTypeText_raw['offset']          = $BlockOffset; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 79 |  |  | 			$BlockTypeText_raw['last_meta_block'] = $LastBlockFlag; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 80 |  |  | 			$BlockTypeText_raw['block_type']      = $BlockType; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 81 |  |  | 			$BlockTypeText_raw['block_type_text'] = $BlockTypeText; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 82 |  |  | 			$BlockTypeText_raw['block_length']    = $BlockLength; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 83 |  |  | 			if ($BlockTypeText_raw['block_type'] != 0x06) { // do not read attachment data automatically | 
            
                                                                                                            
                            
            
                                    
            
            
                | 84 |  |  | 				$BlockTypeText_raw['block_data']  = $this->fread($BlockLength); | 
                            
                    |  |  |  | 
                                                                                        
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                | 85 |  |  | 			} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 86 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 87 |  |  | 			switch ($BlockTypeText) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 88 |  |  | 				case 'STREAMINFO':     // 0x00 | 
            
                                                                                                            
                            
            
                                    
            
            
                | 89 |  |  | 					if (!$this->parseSTREAMINFO($BlockTypeText_raw['block_data'])) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 90 |  |  | 						return false; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 91 |  |  | 					} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 92 |  |  | 					break; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 93 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 94 |  |  | 				case 'PADDING':        // 0x01 | 
            
                                                                                                            
                            
            
                                    
            
            
                | 95 |  |  | 					unset($info['flac']['PADDING']); // ignore | 
            
                                                                                                            
                            
            
                                    
            
            
                | 96 |  |  | 					break; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 97 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 98 |  |  | 				case 'APPLICATION':    // 0x02 | 
            
                                                                                                            
                            
            
                                    
            
            
                | 99 |  |  | 					if (!$this->parseAPPLICATION($BlockTypeText_raw['block_data'])) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 100 |  |  | 						return false; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 101 |  |  | 					} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 102 |  |  | 					break; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 103 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 104 |  |  | 				case 'SEEKTABLE':      // 0x03 | 
            
                                                                                                            
                            
            
                                    
            
            
                | 105 |  |  | 					if (!$this->parseSEEKTABLE($BlockTypeText_raw['block_data'])) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 106 |  |  | 						return false; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 107 |  |  | 					} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 108 |  |  | 					break; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 109 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 110 |  |  | 				case 'VORBIS_COMMENT': // 0x04 | 
            
                                                                                                            
                            
            
                                    
            
            
                | 111 |  |  | 					if (!$this->parseVORBIS_COMMENT($BlockTypeText_raw['block_data'])) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 112 |  |  | 						return false; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 113 |  |  | 					} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 114 |  |  | 					break; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 115 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 116 |  |  | 				case 'CUESHEET':       // 0x05 | 
            
                                                                                                            
                            
            
                                    
            
            
                | 117 |  |  | 					if (!$this->parseCUESHEET($BlockTypeText_raw['block_data'])) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 118 |  |  | 						return false; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 119 |  |  | 					} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 120 |  |  | 					break; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 121 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 122 |  |  | 				case 'PICTURE':        // 0x06 | 
            
                                                                                                            
                            
            
                                    
            
            
                | 123 |  |  | 					if (!$this->parsePICTURE()) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 124 |  |  | 						return false; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 125 |  |  | 					} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 126 |  |  | 					break; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 127 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 128 |  |  | 				default: | 
            
                                                                                                            
                            
            
                                    
            
            
                | 129 |  |  | 					$this->warning('Unhandled METADATA_BLOCK_HEADER.BLOCK_TYPE ('.$BlockType.') at offset '.$BlockOffset); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 130 |  |  | 			} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 131 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 132 |  |  | 			unset($info['flac'][$BlockTypeText]['raw']); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 133 |  |  | 			$info['avdataoffset'] = $this->ftell(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 134 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 135 |  |  | 		while ($LastBlockFlag === false); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 136 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 137 |  |  | 		// handle tags | 
            
                                                                                                            
                            
            
                                    
            
            
                | 138 |  |  | 		if (!empty($info['flac']['VORBIS_COMMENT']['comments'])) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 139 |  |  | 			$info['flac']['comments'] = $info['flac']['VORBIS_COMMENT']['comments']; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 140 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 141 |  |  | 		if (!empty($info['flac']['VORBIS_COMMENT']['vendor'])) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 142 |  |  | 			$info['audio']['encoder'] = str_replace('reference ', '', $info['flac']['VORBIS_COMMENT']['vendor']); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 143 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 144 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 145 |  |  | 		// copy attachments to 'comments' array if nesesary | 
            
                                                                                                            
                            
            
                                    
            
            
                | 146 |  |  | 		if (isset($info['flac']['PICTURE']) && ($this->getid3->option_save_attachments !== getID3::ATTACHMENTS_NONE)) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 147 |  |  | 			foreach ($info['flac']['PICTURE'] as $entry) { | 
            
                                                                                                            
                            
            
                                                                    
                                                                                                        
            
            
                | 148 |  | View Code Duplication | 				if (!empty($entry['data'])) { | 
                            
                    |  |  |  | 
                                                                                        
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                | 149 |  |  | 					if (!isset($info['flac']['comments']['picture'])) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 150 |  |  | 						$info['flac']['comments']['picture'] = array(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 151 |  |  | 					} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 152 |  |  | 					$comments_picture_data = array(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 153 |  |  | 					foreach (array('data', 'image_mime', 'image_width', 'image_height', 'imagetype', 'picturetype', 'description', 'datalength') as $picture_key) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 154 |  |  | 						if (isset($entry[$picture_key])) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 155 |  |  | 							$comments_picture_data[$picture_key] = $entry[$picture_key]; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 156 |  |  | 						} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 157 |  |  | 					} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 158 |  |  | 					$info['flac']['comments']['picture'][] = $comments_picture_data; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 159 |  |  | 					unset($comments_picture_data); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 160 |  |  | 				} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 161 |  |  | 			} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 162 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 163 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 164 |  |  | 		if (isset($info['flac']['STREAMINFO'])) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 165 |  |  | 			if (!$this->isDependencyFor('matroska')) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 166 |  |  | 				$info['flac']['compressed_audio_bytes'] = $info['avdataend'] - $info['avdataoffset']; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 167 |  |  | 			} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 168 |  |  | 			$info['flac']['uncompressed_audio_bytes'] = $info['flac']['STREAMINFO']['samples_stream'] * $info['flac']['STREAMINFO']['channels'] * ($info['flac']['STREAMINFO']['bits_per_sample'] / 8); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 169 |  |  | 			if ($info['flac']['uncompressed_audio_bytes'] == 0) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 170 |  |  | 				return $this->error('Corrupt FLAC file: uncompressed_audio_bytes == zero'); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 171 |  |  | 			} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 172 |  |  | 			if (!empty($info['flac']['compressed_audio_bytes'])) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 173 |  |  | 				$info['flac']['compression_ratio'] = $info['flac']['compressed_audio_bytes'] / $info['flac']['uncompressed_audio_bytes']; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 174 |  |  | 			} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 175 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 176 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 177 |  |  | 		// set md5_data_source - built into flac 0.5+ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 178 |  |  | 		if (isset($info['flac']['STREAMINFO']['audio_signature'])) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 179 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 180 |  |  | 			if ($info['flac']['STREAMINFO']['audio_signature'] === str_repeat("\x00", 16)) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 181 |  |  |                 $this->warning('FLAC STREAMINFO.audio_signature is null (known issue with libOggFLAC)'); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 182 |  |  | 			} | 
            
                                                                                                            
                            
            
                                                                    
                                                                                                        
            
            
                | 183 |  | View Code Duplication | 			else { | 
                            
                    |  |  |  | 
                                                                                        
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                | 184 |  |  | 				$info['md5_data_source'] = ''; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 185 |  |  | 				$md5 = $info['flac']['STREAMINFO']['audio_signature']; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 186 |  |  | 				for ($i = 0; $i < strlen($md5); $i++) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 187 |  |  | 					$info['md5_data_source'] .= str_pad(dechex(ord($md5[$i])), 2, '00', STR_PAD_LEFT); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 188 |  |  | 				} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 189 |  |  | 				if (!preg_match('/^[0-9a-f]{32}$/', $info['md5_data_source'])) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 190 |  |  | 					unset($info['md5_data_source']); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 191 |  |  | 				} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 192 |  |  | 			} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 193 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 194 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 195 |  |  | 		if (isset($info['flac']['STREAMINFO']['bits_per_sample'])) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 196 |  |  | 			$info['audio']['bits_per_sample'] = $info['flac']['STREAMINFO']['bits_per_sample']; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 197 |  |  | 			if ($info['audio']['bits_per_sample'] == 8) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 198 |  |  | 				// special case | 
            
                                                                                                            
                            
            
                                    
            
            
                | 199 |  |  | 				// must invert sign bit on all data bytes before MD5'ing to match FLAC's calculated value | 
            
                                                                                                            
                            
            
                                    
            
            
                | 200 |  |  | 				// MD5sum calculates on unsigned bytes, but FLAC calculated MD5 on 8-bit audio data as signed | 
            
                                                                                                            
                            
            
                                    
            
            
                | 201 |  |  | 				$this->warning('FLAC calculates MD5 data strangely on 8-bit audio, so the stored md5_data_source value will not match the decoded WAV file'); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 202 |  |  | 			} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 203 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 204 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 205 |  |  | 		return true; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 206 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 207 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 208 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 209 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 210 |  |  | 	 * @param string $BlockData | 
            
                                                                                                            
                            
            
                                    
            
            
                | 211 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 212 |  |  | 	 * @return array | 
            
                                                                                                            
                            
            
                                    
            
            
                | 213 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 214 |  |  | 	public static function parseSTREAMINFOdata($BlockData) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 215 |  |  | 		$streaminfo = array(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 216 |  |  | 		$streaminfo['min_block_size']  = getid3_lib::BigEndian2Int(substr($BlockData, 0, 2)); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 217 |  |  | 		$streaminfo['max_block_size']  = getid3_lib::BigEndian2Int(substr($BlockData, 2, 2)); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 218 |  |  | 		$streaminfo['min_frame_size']  = getid3_lib::BigEndian2Int(substr($BlockData, 4, 3)); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 219 |  |  | 		$streaminfo['max_frame_size']  = getid3_lib::BigEndian2Int(substr($BlockData, 7, 3)); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 220 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 221 |  |  | 		$SRCSBSS                       = getid3_lib::BigEndian2Bin(substr($BlockData, 10, 8)); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 222 |  |  | 		$streaminfo['sample_rate']     = getid3_lib::Bin2Dec(substr($SRCSBSS,  0, 20)); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 223 |  |  | 		$streaminfo['channels']        = getid3_lib::Bin2Dec(substr($SRCSBSS, 20,  3)) + 1; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 224 |  |  | 		$streaminfo['bits_per_sample'] = getid3_lib::Bin2Dec(substr($SRCSBSS, 23,  5)) + 1; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 225 |  |  | 		$streaminfo['samples_stream']  = getid3_lib::Bin2Dec(substr($SRCSBSS, 28, 36)); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 226 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 227 |  |  | 		$streaminfo['audio_signature'] =                           substr($BlockData, 18, 16); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 228 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 229 |  |  | 		return $streaminfo; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 230 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 231 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 232 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 233 |  |  | 	 * @param string $BlockData | 
            
                                                                                                            
                            
            
                                    
            
            
                | 234 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 235 |  |  | 	 * @return bool | 
            
                                                                                                            
                            
            
                                    
            
            
                | 236 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 237 |  |  | 	private function parseSTREAMINFO($BlockData) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 238 |  |  | 		$info = &$this->getid3->info; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 239 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 240 |  |  | 		$info['flac']['STREAMINFO'] = self::parseSTREAMINFOdata($BlockData); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 241 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 242 |  |  | 		if (!empty($info['flac']['STREAMINFO']['sample_rate'])) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 243 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 244 |  |  | 			$info['audio']['bitrate_mode']    = 'vbr'; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 245 |  |  | 			$info['audio']['sample_rate']     = $info['flac']['STREAMINFO']['sample_rate']; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 246 |  |  | 			$info['audio']['channels']        = $info['flac']['STREAMINFO']['channels']; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 247 |  |  | 			$info['audio']['bits_per_sample'] = $info['flac']['STREAMINFO']['bits_per_sample']; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 248 |  |  | 			$info['playtime_seconds']         = $info['flac']['STREAMINFO']['samples_stream'] / $info['flac']['STREAMINFO']['sample_rate']; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 249 |  |  | 			if ($info['playtime_seconds'] > 0) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 250 |  |  | 				if (!$this->isDependencyFor('matroska')) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 251 |  |  | 					$info['audio']['bitrate'] = (($info['avdataend'] - $info['avdataoffset']) * 8) / $info['playtime_seconds']; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 252 |  |  | 				} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 253 |  |  | 				else { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 254 |  |  | 					$this->warning('Cannot determine audio bitrate because total stream size is unknown'); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 255 |  |  | 				} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 256 |  |  | 			} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 257 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 258 |  |  | 		} else { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 259 |  |  | 			return $this->error('Corrupt METAdata block: STREAMINFO'); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 260 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 261 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 262 |  |  | 		return true; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 263 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 264 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 265 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 266 |  |  | 	 * @param string $BlockData | 
            
                                                                                                            
                            
            
                                    
            
            
                | 267 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 268 |  |  | 	 * @return bool | 
            
                                                                                                            
                            
            
                                    
            
            
                | 269 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 270 |  |  | 	private function parseAPPLICATION($BlockData) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 271 |  |  | 		$info = &$this->getid3->info; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 272 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 273 |  |  | 		$ApplicationID = getid3_lib::BigEndian2Int(substr($BlockData, 0, 4)); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 274 |  |  | 		$info['flac']['APPLICATION'][$ApplicationID]['name'] = self::applicationIDLookup($ApplicationID); | 
                            
                    |  |  |  | 
                                                                                        
                                                                                     | 
            
                                                                                                            
                            
            
                                    
            
            
                | 275 |  |  | 		$info['flac']['APPLICATION'][$ApplicationID]['data'] = substr($BlockData, 4); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 276 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 277 |  |  | 		return true; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 278 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 279 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 280 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 281 |  |  | 	 * @param string $BlockData | 
            
                                                                                                            
                            
            
                                    
            
            
                | 282 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 283 |  |  | 	 * @return bool | 
            
                                                                                                            
                            
            
                                    
            
            
                | 284 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 285 |  |  | 	private function parseSEEKTABLE($BlockData) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 286 |  |  | 		$info = &$this->getid3->info; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 287 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 288 |  |  | 		$offset = 0; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 289 |  |  | 		$BlockLength = strlen($BlockData); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 290 |  |  | 		$placeholderpattern = str_repeat("\xFF", 8); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 291 |  |  | 		while ($offset < $BlockLength) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 292 |  |  | 			$SampleNumberString = substr($BlockData, $offset, 8); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 293 |  |  | 			$offset += 8; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 294 |  |  | 			if ($SampleNumberString == $placeholderpattern) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 295 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 296 |  |  | 				// placeholder point | 
            
                                                                                                            
                            
            
                                    
            
            
                | 297 |  |  | 				getid3_lib::safe_inc($info['flac']['SEEKTABLE']['placeholders'], 1); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 298 |  |  | 				$offset += 10; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 299 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 300 |  |  | 			} else { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 301 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 302 |  |  | 				$SampleNumber                                        = getid3_lib::BigEndian2Int($SampleNumberString); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 303 |  |  | 				$info['flac']['SEEKTABLE'][$SampleNumber]['offset']  = getid3_lib::BigEndian2Int(substr($BlockData, $offset, 8)); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 304 |  |  | 				$offset += 8; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 305 |  |  | 				$info['flac']['SEEKTABLE'][$SampleNumber]['samples'] = getid3_lib::BigEndian2Int(substr($BlockData, $offset, 2)); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 306 |  |  | 				$offset += 2; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 307 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 308 |  |  | 			} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 309 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 310 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 311 |  |  | 		return true; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 312 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 313 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 314 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 315 |  |  | 	 * @param string $BlockData | 
            
                                                                                                            
                            
            
                                    
            
            
                | 316 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 317 |  |  | 	 * @return bool | 
            
                                                                                                            
                            
            
                                    
            
            
                | 318 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 319 |  |  | 	private function parseVORBIS_COMMENT($BlockData) { | 
                            
                    |  |  |  | 
                                                                                        
                                                                                     | 
            
                                                                                                            
                            
            
                                    
            
            
                | 320 |  |  | 		$info = &$this->getid3->info; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 321 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 322 |  |  | 		$getid3_ogg = new getid3_ogg($this->getid3); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 323 |  |  | 		if ($this->isDependencyFor('matroska')) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 324 |  |  | 			$getid3_ogg->setStringMode($this->data_string); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 325 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 326 |  |  | 		$getid3_ogg->ParseVorbisComments(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 327 |  |  | 		if (isset($info['ogg'])) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 328 |  |  | 			unset($info['ogg']['comments_raw']); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 329 |  |  | 			$info['flac']['VORBIS_COMMENT'] = $info['ogg']; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 330 |  |  | 			unset($info['ogg']); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 331 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 332 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 333 |  |  | 		unset($getid3_ogg); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 334 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 335 |  |  | 		return true; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 336 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 337 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 338 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 339 |  |  | 	 * @param string $BlockData | 
            
                                                                                                            
                            
            
                                    
            
            
                | 340 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 341 |  |  | 	 * @return bool | 
            
                                                                                                            
                            
            
                                    
            
            
                | 342 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 343 |  |  | 	private function parseCUESHEET($BlockData) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 344 |  |  | 		$info = &$this->getid3->info; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 345 |  |  | 		$offset = 0; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 346 |  |  | 		$info['flac']['CUESHEET']['media_catalog_number'] =                              trim(substr($BlockData, $offset, 128), "\0"); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 347 |  |  | 		$offset += 128; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 348 |  |  | 		$info['flac']['CUESHEET']['lead_in_samples']      =         getid3_lib::BigEndian2Int(substr($BlockData, $offset, 8)); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 349 |  |  | 		$offset += 8; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 350 |  |  | 		$info['flac']['CUESHEET']['flags']['is_cd']       = (bool) (getid3_lib::BigEndian2Int(substr($BlockData, $offset, 1)) & 0x80); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 351 |  |  | 		$offset += 1; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 352 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 353 |  |  | 		$offset += 258; // reserved | 
            
                                                                                                            
                            
            
                                    
            
            
                | 354 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 355 |  |  | 		$info['flac']['CUESHEET']['number_tracks']        =         getid3_lib::BigEndian2Int(substr($BlockData, $offset, 1)); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 356 |  |  | 		$offset += 1; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 357 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 358 |  |  | 		for ($track = 0; $track < $info['flac']['CUESHEET']['number_tracks']; $track++) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 359 |  |  | 			$TrackSampleOffset = getid3_lib::BigEndian2Int(substr($BlockData, $offset, 8)); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 360 |  |  | 			$offset += 8; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 361 |  |  | 			$TrackNumber       = getid3_lib::BigEndian2Int(substr($BlockData, $offset, 1)); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 362 |  |  | 			$offset += 1; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 363 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 364 |  |  | 			$info['flac']['CUESHEET']['tracks'][$TrackNumber]['sample_offset']         = $TrackSampleOffset; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 365 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 366 |  |  | 			$info['flac']['CUESHEET']['tracks'][$TrackNumber]['isrc']                  =                           substr($BlockData, $offset, 12); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 367 |  |  | 			$offset += 12; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 368 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 369 |  |  | 			$TrackFlagsRaw                                                             = getid3_lib::BigEndian2Int(substr($BlockData, $offset, 1)); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 370 |  |  | 			$offset += 1; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 371 |  |  | 			$info['flac']['CUESHEET']['tracks'][$TrackNumber]['flags']['is_audio']     = (bool) ($TrackFlagsRaw & 0x80); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 372 |  |  | 			$info['flac']['CUESHEET']['tracks'][$TrackNumber]['flags']['pre_emphasis'] = (bool) ($TrackFlagsRaw & 0x40); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 373 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 374 |  |  | 			$offset += 13; // reserved | 
            
                                                                                                            
                            
            
                                    
            
            
                | 375 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 376 |  |  | 			$info['flac']['CUESHEET']['tracks'][$TrackNumber]['index_points']          = getid3_lib::BigEndian2Int(substr($BlockData, $offset, 1)); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 377 |  |  | 			$offset += 1; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 378 |  |  |  | 
            
                                                                                                            
                            
            
                                                                    
                                                                                                        
            
            
                | 379 |  | View Code Duplication | 			for ($index = 0; $index < $info['flac']['CUESHEET']['tracks'][$TrackNumber]['index_points']; $index++) { | 
                            
                    |  |  |  | 
                                                                                        
                                                                                     | 
            
                                                                                                            
                            
            
                                    
            
            
                | 380 |  |  | 				$IndexSampleOffset = getid3_lib::BigEndian2Int(substr($BlockData, $offset, 8)); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 381 |  |  | 				$offset += 8; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 382 |  |  | 				$IndexNumber       = getid3_lib::BigEndian2Int(substr($BlockData, $offset, 1)); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 383 |  |  | 				$offset += 1; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 384 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 385 |  |  | 				$offset += 3; // reserved | 
            
                                                                                                            
                            
            
                                    
            
            
                | 386 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 387 |  |  | 				$info['flac']['CUESHEET']['tracks'][$TrackNumber]['indexes'][$IndexNumber] = $IndexSampleOffset; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 388 |  |  | 			} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 389 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 390 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 391 |  |  | 		return true; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 392 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 393 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 394 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 395 |  |  | 	 * Parse METADATA_BLOCK_PICTURE flac structure and extract attachment | 
            
                                                                                                            
                            
            
                                    
            
            
                | 396 |  |  | 	 * External usage: audio.ogg | 
            
                                                                                                            
                            
            
                                    
            
            
                | 397 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 398 |  |  | 	 * @return bool | 
            
                                                                                                            
                            
            
                                    
            
            
                | 399 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 400 |  |  | 	public function parsePICTURE() { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 401 |  |  | 		$info = &$this->getid3->info; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 402 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 403 |  |  | 		$picture['typeid']         = getid3_lib::BigEndian2Int($this->fread(4)); | 
                            
                    |  |  |  | 
                                                                                        
                                                                                            
                                                                                     | 
            
                                                                                                            
                            
            
                                    
            
            
                | 404 |  |  | 		$picture['picturetype']    = self::pictureTypeLookup($picture['typeid']); | 
                            
                    |  |  |  | 
                                                                                        
                                                                                     | 
            
                                                                                                            
                            
            
                                    
            
            
                | 405 |  |  | 		$picture['image_mime']     = $this->fread(getid3_lib::BigEndian2Int($this->fread(4))); | 
                            
                    |  |  |  | 
                                                                                        
                                                                                            
                                                                                     | 
            
                                                                                                            
                            
            
                                    
            
            
                | 406 |  |  | 		$descr_length              = getid3_lib::BigEndian2Int($this->fread(4)); | 
                            
                    |  |  |  | 
                                                                                        
                                                                                     | 
            
                                                                                                            
                            
            
                                    
            
            
                | 407 |  |  | 		if ($descr_length) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 408 |  |  | 			$picture['description'] = $this->fread($descr_length); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 409 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 410 |  |  | 		$picture['image_width']    = getid3_lib::BigEndian2Int($this->fread(4)); | 
                            
                    |  |  |  | 
                                                                                        
                                                                                     | 
            
                                                                                                            
                            
            
                                    
            
            
                | 411 |  |  | 		$picture['image_height']   = getid3_lib::BigEndian2Int($this->fread(4)); | 
                            
                    |  |  |  | 
                                                                                        
                                                                                     | 
            
                                                                                                            
                            
            
                                    
            
            
                | 412 |  |  | 		$picture['color_depth']    = getid3_lib::BigEndian2Int($this->fread(4)); | 
                            
                    |  |  |  | 
                                                                                        
                                                                                     | 
            
                                                                                                            
                            
            
                                    
            
            
                | 413 |  |  | 		$picture['colors_indexed'] = getid3_lib::BigEndian2Int($this->fread(4)); | 
                            
                    |  |  |  | 
                                                                                        
                                                                                     | 
            
                                                                                                            
                            
            
                                    
            
            
                | 414 |  |  | 		$picture['datalength']     = getid3_lib::BigEndian2Int($this->fread(4)); | 
                            
                    |  |  |  | 
                                                                                        
                                                                                     | 
            
                                                                                                            
                            
            
                                    
            
            
                | 415 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 416 |  |  | 		if ($picture['image_mime'] == '-->') { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 417 |  |  | 			$picture['data'] = $this->fread($picture['datalength']); | 
                            
                    |  |  |  | 
                                                                                        
                                                                                     | 
            
                                                                                                            
                            
            
                                    
            
            
                | 418 |  |  | 		} else { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 419 |  |  | 			$picture['data'] = $this->saveAttachment( | 
            
                                                                                                            
                            
            
                                    
            
            
                | 420 |  |  | 				str_replace('/', '_', $picture['picturetype']).'_'.$this->ftell(), | 
            
                                                                                                            
                            
            
                                    
            
            
                | 421 |  |  | 				$this->ftell(), | 
                            
                    |  |  |  | 
                                                                                        
                                                                                     | 
            
                                                                                                            
                            
            
                                    
            
            
                | 422 |  |  | 				$picture['datalength'], | 
                            
                    |  |  |  | 
                                                                                        
                                                                                     | 
            
                                                                                                            
                            
            
                                    
            
            
                | 423 |  |  | 				$picture['image_mime']); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 424 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 425 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 426 |  |  | 		$info['flac']['PICTURE'][] = $picture; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 427 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 428 |  |  | 		return true; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 429 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 430 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 431 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 432 |  |  | 	 * @param int $blocktype | 
            
                                                                                                            
                            
            
                                    
            
            
                | 433 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 434 |  |  | 	 * @return string | 
            
                                                                                                            
                            
            
                                    
            
            
                | 435 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 436 |  |  | 	public static function metaBlockTypeLookup($blocktype) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 437 |  |  | 		static $lookup = array( | 
            
                                                                                                            
                            
            
                                    
            
            
                | 438 |  |  | 			0 => 'STREAMINFO', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 439 |  |  | 			1 => 'PADDING', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 440 |  |  | 			2 => 'APPLICATION', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 441 |  |  | 			3 => 'SEEKTABLE', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 442 |  |  | 			4 => 'VORBIS_COMMENT', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 443 |  |  | 			5 => 'CUESHEET', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 444 |  |  | 			6 => 'PICTURE', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 445 |  |  | 		); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 446 |  |  | 		return (isset($lookup[$blocktype]) ? $lookup[$blocktype] : 'reserved'); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 447 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 448 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 449 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 450 |  |  | 	 * @param int $applicationid | 
            
                                                                                                            
                            
            
                                    
            
            
                | 451 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 452 |  |  | 	 * @return string | 
            
                                                                                                            
                                                                
            
                                    
            
            
                | 453 |  |  | 	 */ | 
            
                                                                        
                            
            
                                    
            
            
                | 454 |  |  | 	public static function applicationIDLookup($applicationid) { | 
            
                                                                        
                            
            
                                    
            
            
                | 455 |  |  | 		// http://flac.sourceforge.net/id.html | 
            
                                                                        
                            
            
                                    
            
            
                | 456 |  |  | 		static $lookup = array( | 
            
                                                                        
                            
            
                                    
            
            
                | 457 |  |  | 			0x41544348 => 'FlacFile',                                                                           // "ATCH" | 
            
                                                                        
                            
            
                                    
            
            
                | 458 |  |  | 			0x42534F4C => 'beSolo',                                                                             // "BSOL" | 
            
                                                                        
                            
            
                                    
            
            
                | 459 |  |  | 			0x42554753 => 'Bugs Player',                                                                        // "BUGS" | 
            
                                                                        
                            
            
                                    
            
            
                | 460 |  |  | 			0x43756573 => 'GoldWave cue points (specification)',                                                // "Cues" | 
            
                                                                        
                            
            
                                    
            
            
                | 461 |  |  | 			0x46696361 => 'CUE Splitter',                                                                       // "Fica" | 
            
                                                                        
                            
            
                                    
            
            
                | 462 |  |  | 			0x46746F6C => 'flac-tools',                                                                         // "Ftol" | 
            
                                                                        
                            
            
                                    
            
            
                | 463 |  |  | 			0x4D4F5442 => 'MOTB MetaCzar',                                                                      // "MOTB" | 
            
                                                                        
                            
            
                                    
            
            
                | 464 |  |  | 			0x4D505345 => 'MP3 Stream Editor',                                                                  // "MPSE" | 
            
                                                                        
                            
            
                                    
            
            
                | 465 |  |  | 			0x4D754D4C => 'MusicML: Music Metadata Language',                                                   // "MuML" | 
            
                                                                        
                            
            
                                    
            
            
                | 466 |  |  | 			0x52494646 => 'Sound Devices RIFF chunk storage',                                                   // "RIFF" | 
            
                                                                        
                            
            
                                    
            
            
                | 467 |  |  | 			0x5346464C => 'Sound Font FLAC',                                                                    // "SFFL" | 
            
                                                                        
                            
            
                                    
            
            
                | 468 |  |  | 			0x534F4E59 => 'Sony Creative Software',                                                             // "SONY" | 
            
                                                                        
                            
            
                                    
            
            
                | 469 |  |  | 			0x5351455A => 'flacsqueeze',                                                                        // "SQEZ" | 
            
                                                                        
                            
            
                                    
            
            
                | 470 |  |  | 			0x54745776 => 'TwistedWave',                                                                        // "TtWv" | 
            
                                                                        
                            
            
                                    
            
            
                | 471 |  |  | 			0x55495453 => 'UITS Embedding tools',                                                               // "UITS" | 
            
                                                                        
                            
            
                                    
            
            
                | 472 |  |  | 			0x61696666 => 'FLAC AIFF chunk storage',                                                            // "aiff" | 
            
                                                                        
                            
            
                                    
            
            
                | 473 |  |  | 			0x696D6167 => 'flac-image application for storing arbitrary files in APPLICATION metadata blocks',  // "imag" | 
            
                                                                        
                            
            
                                    
            
            
                | 474 |  |  | 			0x7065656D => 'Parseable Embedded Extensible Metadata (specification)',                             // "peem" | 
            
                                                                        
                            
            
                                    
            
            
                | 475 |  |  | 			0x71667374 => 'QFLAC Studio',                                                                       // "qfst" | 
            
                                                                        
                            
            
                                    
            
            
                | 476 |  |  | 			0x72696666 => 'FLAC RIFF chunk storage',                                                            // "riff" | 
            
                                                                        
                            
            
                                    
            
            
                | 477 |  |  | 			0x74756E65 => 'TagTuner',                                                                           // "tune" | 
            
                                                                        
                            
            
                                    
            
            
                | 478 |  |  | 			0x78626174 => 'XBAT',                                                                               // "xbat" | 
            
                                                                        
                            
            
                                    
            
            
                | 479 |  |  | 			0x786D6364 => 'xmcd',                                                                               // "xmcd" | 
            
                                                                        
                            
            
                                    
            
            
                | 480 |  |  | 		); | 
            
                                                                        
                            
            
                                    
            
            
                | 481 |  |  | 		return (isset($lookup[$applicationid]) ? $lookup[$applicationid] : 'reserved'); | 
            
                                                                        
                            
            
                                    
            
            
                | 482 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 483 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 484 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 485 |  |  | 	 * @param int $type_id | 
            
                                                                                                            
                            
            
                                    
            
            
                | 486 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 487 |  |  | 	 * @return string | 
            
                                                                                                            
                            
            
                                    
            
            
                | 488 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                                                    
                                                                                                        
            
            
                | 489 |  | View Code Duplication | 	public static function pictureTypeLookup($type_id) { | 
                            
                    |  |  |  | 
                                                                                        
                                                                                     | 
            
                                                                                                            
                            
            
                                    
            
            
                | 490 |  |  | 		static $lookup = array ( | 
            
                                                                                                            
                            
            
                                    
            
            
                | 491 |  |  | 			 0 => 'Other', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 492 |  |  | 			 1 => '32x32 pixels \'file icon\' (PNG only)', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 493 |  |  | 			 2 => 'Other file icon', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 494 |  |  | 			 3 => 'Cover (front)', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 495 |  |  | 			 4 => 'Cover (back)', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 496 |  |  | 			 5 => 'Leaflet page', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 497 |  |  | 			 6 => 'Media (e.g. label side of CD)', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 498 |  |  | 			 7 => 'Lead artist/lead performer/soloist', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 499 |  |  | 			 8 => 'Artist/performer', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 500 |  |  | 			 9 => 'Conductor', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 501 |  |  | 			10 => 'Band/Orchestra', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 502 |  |  | 			11 => 'Composer', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 503 |  |  | 			12 => 'Lyricist/text writer', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 504 |  |  | 			13 => 'Recording Location', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 505 |  |  | 			14 => 'During recording', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 506 |  |  | 			15 => 'During performance', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 507 |  |  | 			16 => 'Movie/video screen capture', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 508 |  |  | 			17 => 'A bright coloured fish', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 509 |  |  | 			18 => 'Illustration', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 510 |  |  | 			19 => 'Band/artist logotype', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 511 |  |  | 			20 => 'Publisher/Studio logotype', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 512 |  |  | 		); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 513 |  |  | 		return (isset($lookup[$type_id]) ? $lookup[$type_id] : 'reserved'); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 514 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 515 |  |  |  | 
            
                                                                                                            
                                                                
            
                                    
            
            
                | 516 |  |  | } | 
            
                                                        
            
                                    
            
            
                | 517 |  |  |  | 
            
                        
This check looks for type mismatches where the missing type is
false. This is usually indicative of an error condtion.Consider the follow example
This function either returns a new
DateTimeobject or false, if there was an error. This is a typical pattern in PHP programming to show that an error has occurred without raising an exception. The calling code should check for this returnedfalsebefore passing on the value to another function or method that may not be able to handle afalse.