rlm@3: <?php
rlm@3: // +----------------------------------------------------------------------+
rlm@3: // | PHP version 5                                                        |
rlm@3: // +----------------------------------------------------------------------+
rlm@3: // | Copyright (c) 2002-2006 James Heinrich, Allan Hansen                 |
rlm@3: // +----------------------------------------------------------------------+
rlm@3: // | This source file is subject to version 2 of the GPL license,         |
rlm@3: // | that is bundled with this package in the file license.txt and is     |
rlm@3: // | available through the world-wide-web at the following url:           |
rlm@3: // | http://www.gnu.org/copyleft/gpl.html                                 |
rlm@3: // +----------------------------------------------------------------------+
rlm@3: // | getID3() - http://getid3.sourceforge.net or http://www.getid3.org    |
rlm@3: // +----------------------------------------------------------------------+
rlm@3: // | Authors: James Heinrich <infoØgetid3*org>                            |
rlm@3: // |          Allan Hansen <ahØartemis*dk>                                |
rlm@3: // +----------------------------------------------------------------------+
rlm@3: // | module.archive.gzip.php                                              |
rlm@3: // | module for analyzing GZIP files                                      |
rlm@3: // | dependencies: NONE                                                   |
rlm@3: // +----------------------------------------------------------------------+
rlm@3: // | FLV module by Seth Kaufman <sethØwhirl-i.gig*com>                    |
rlm@3: // |                                                                      |
rlm@3: // | * version 0.1 (26 June 2005)                                         |
rlm@3: // |                                                                      |
rlm@3: // | minor modifications by James Heinrich <infoØgetid3*org>              |
rlm@3: // | * version 0.1.1 (15 July 2005)                                       |
rlm@3: // |                                                                      |
rlm@3: // | Support for On2 VP6 codec and meta information by                    |
rlm@3: // | Steve Webster <steve.websterØfeaturecreep*com>                       |
rlm@3: // | * version 0.2 (22 February 2006)                                     |
rlm@3: // |                                                                      |
rlm@3: // | Modified to not read entire file into memory                         |
rlm@3: // | by James Heinrich <infoØgetid3*org>                                  |
rlm@3: // | * version 0.3 (15 June 2006)                                         |
rlm@3: // |                                                                      |
rlm@3: // | Modifications by Allan Hansen <ahØartemis*dk>                        |
rlm@3: // | Adapted module for PHP5 and getID3 2.0.0.                            |
rlm@3: // +----------------------------------------------------------------------+
rlm@3: //
rlm@3: // $Id: module.audio-video.flv.php,v 1.7 2006/11/10 11:20:12 ah Exp $
rlm@3: 
rlm@3: 
rlm@3: 
rlm@3: class getid3_flv extends getid3_handler
rlm@3: {
rlm@3:     
rlm@3:     const TAG_AUDIO    =  8;
rlm@3:     const TAG_VIDEO    =  9;
rlm@3:     const TAG_META     = 18;
rlm@3: 
rlm@3:     const VIDEO_H263   = 2;
rlm@3:     const VIDEO_SCREEN = 3;
rlm@3:     const VIDEO_VP6    = 4;
rlm@3: 
rlm@3:     
rlm@3: 	public function Analyze()
rlm@3: 	{
rlm@3: 	    $info = &$this->getid3->info;
rlm@3: 	    
rlm@3: 	    $info['flv'] = array ();
rlm@3: 	    $info_flv = &$info['flv'];
rlm@3: 	    
rlm@3: 		fseek($this->getid3->fp, $info['avdataoffset'], SEEK_SET);
rlm@3: 
rlm@3: 		$flv_data_length = $info['avdataend'] - $info['avdataoffset'];
rlm@3: 		$flv_header = fread($this->getid3->fp, 5);
rlm@3: 
rlm@3: 		$info['fileformat'] = 'flv';
rlm@3: 		$info_flv['header']['signature'] =                           substr($flv_header, 0, 3);
rlm@3: 		$info_flv['header']['version']   = getid3_lib::BigEndian2Int(substr($flv_header, 3, 1));
rlm@3: 		$type_flags                      = getid3_lib::BigEndian2Int(substr($flv_header, 4, 1));
rlm@3: 
rlm@3: 		$info_flv['header']['hasAudio'] = (bool) ($type_flags & 0x04);
rlm@3: 		$info_flv['header']['hasVideo'] = (bool) ($type_flags & 0x01);
rlm@3: 
rlm@3: 		$frame_size_data_length = getid3_lib::BigEndian2Int(fread($this->getid3->fp, 4));
rlm@3: 		$flv_header_frame_length = 9;
rlm@3: 		if ($frame_size_data_length > $flv_header_frame_length) {
rlm@3: 			fseek($this->getid3->fp, $frame_size_data_length - $flv_header_frame_length, SEEK_CUR);
rlm@3: 		}
rlm@3: 
rlm@3: 		$duration = 0;
rlm@3: 		while ((ftell($this->getid3->fp) + 1) < $info['avdataend']) {
rlm@3: 			
rlm@3: 			$this_tag_header = fread($this->getid3->fp, 16);
rlm@3: 
rlm@3: 			$previous_tag_length = getid3_lib::BigEndian2Int(substr($this_tag_header,  0, 4));
rlm@3: 			$tag_type            = getid3_lib::BigEndian2Int(substr($this_tag_header,  4, 1));
rlm@3: 			$data_length         = getid3_lib::BigEndian2Int(substr($this_tag_header,  5, 3));
rlm@3: 			$timestamp           = getid3_lib::BigEndian2Int(substr($this_tag_header,  8, 3));
rlm@3: 			$last_header_byte    = getid3_lib::BigEndian2Int(substr($this_tag_header, 15, 1));
rlm@3: 			$next_offset         = ftell($this->getid3->fp) - 1 + $data_length;
rlm@3: 
rlm@3: 			switch ($tag_type) {
rlm@3: 				
rlm@3: 				case getid3_flv::TAG_AUDIO:
rlm@3: 					if (!isset($info_flv['audio']['audioFormat'])) {
rlm@3: 						$info_flv['audio']['audioFormat']     =  $last_header_byte & 0x07;
rlm@3: 						$info_flv['audio']['audioRate']       = ($last_header_byte & 0x30) / 0x10;
rlm@3: 						$info_flv['audio']['audioSampleSize'] = ($last_header_byte & 0x40) / 0x40;
rlm@3: 						$info_flv['audio']['audioType']       = ($last_header_byte & 0x80) / 0x80;
rlm@3: 					}
rlm@3: 					break;
rlm@3: 
rlm@3: 
rlm@3: 				case getid3_flv::TAG_VIDEO:
rlm@3: 					if (!isset($info_flv['video']['videoCodec'])) {
rlm@3: 						$info_flv['video']['videoCodec'] = $last_header_byte & 0x07;
rlm@3: 
rlm@3: 						$flv_video_header = fread($this->getid3->fp, 11);
rlm@3: 
rlm@3: 						if ($info_flv['video']['videoCodec'] != getid3_flv::VIDEO_VP6) {
rlm@3: 
rlm@3: 							$picture_size_type = (getid3_lib::BigEndian2Int(substr($flv_video_header, 3, 2))) >> 7;
rlm@3: 							$picture_size_type = $picture_size_type & 0x0007;
rlm@3: 							$info_flv['header']['videoSizeType'] = $picture_size_type;
rlm@3: 							
rlm@3: 							switch ($picture_size_type) {
rlm@3: 								case 0:
rlm@3: 									$picture_size_enc = getid3_lib::BigEndian2Int(substr($flv_video_header, 5, 2));
rlm@3: 									$picture_size_enc <<= 1;
rlm@3: 									$info['video']['resolution_x'] = ($picture_size_enc & 0xFF00) >> 8;
rlm@3: 									$picture_size_enc = getid3_lib::BigEndian2Int(substr($flv_video_header, 6, 2));
rlm@3: 									$picture_size_enc <<= 1;
rlm@3: 									$info['video']['resolution_y'] = ($picture_size_enc & 0xFF00) >> 8;
rlm@3: 									break;
rlm@3: 
rlm@3: 								case 1:
rlm@3: 									$picture_size_enc = getid3_lib::BigEndian2Int(substr($flv_video_header, 5, 4));
rlm@3: 									$picture_size_enc <<= 1;
rlm@3: 									$info['video']['resolution_x'] = ($picture_size_enc & 0xFFFF0000) >> 16;
rlm@3: 
rlm@3: 									$picture_size_enc = getid3_lib::BigEndian2Int(substr($flv_video_header, 7, 4));
rlm@3: 									$picture_size_enc <<= 1;
rlm@3: 									$info['video']['resolution_y'] = ($picture_size_enc & 0xFFFF0000) >> 16;
rlm@3: 									break;
rlm@3: 
rlm@3: 								case 2:
rlm@3: 									$info['video']['resolution_x'] = 352;
rlm@3: 									$info['video']['resolution_y'] = 288;
rlm@3: 									break;
rlm@3: 
rlm@3: 								case 3:
rlm@3: 									$info['video']['resolution_x'] = 176;
rlm@3: 									$info['video']['resolution_y'] = 144;
rlm@3: 									break;
rlm@3: 
rlm@3: 								case 4:
rlm@3: 									$info['video']['resolution_x'] = 128;
rlm@3: 									$info['video']['resolution_y'] = 96;
rlm@3: 									break;
rlm@3: 
rlm@3: 								case 5:
rlm@3: 									$info['video']['resolution_x'] = 320;
rlm@3: 									$info['video']['resolution_y'] = 240;
rlm@3: 									break;
rlm@3: 
rlm@3: 								case 6:
rlm@3: 									$info['video']['resolution_x'] = 160;
rlm@3: 									$info['video']['resolution_y'] = 120;
rlm@3: 									break;
rlm@3: 
rlm@3: 								default:
rlm@3: 									$info['video']['resolution_x'] = 0;
rlm@3: 									$info['video']['resolution_y'] = 0;
rlm@3: 									break;
rlm@3: 							}
rlm@3: 						}
rlm@3: 					}
rlm@3: 					break;
rlm@3: 
rlm@3: 
rlm@3: 				// Meta tag
rlm@3: 				case getid3_flv::TAG_META:
rlm@3: 
rlm@3: 					fseek($this->getid3->fp, -1, SEEK_CUR);
rlm@3: 					$reader = new AMFReader(new AMFStream(fread($this->getid3->fp, $data_length)));
rlm@3: 					$event_name = $reader->readData();
rlm@3: 					$info['meta'][$event_name] = $reader->readData();
rlm@3: 					unset($reader);
rlm@3: 
rlm@3: 					$info['video']['frame_rate']   = @$info['meta']['onMetaData']['framerate'];
rlm@3: 					$info['video']['resolution_x'] = @$info['meta']['onMetaData']['width'];
rlm@3: 					$info['video']['resolution_y'] = @$info['meta']['onMetaData']['height'];
rlm@3: 					break;
rlm@3: 
rlm@3: 				default:
rlm@3: 					// noop
rlm@3: 					break;
rlm@3: 			}
rlm@3: 
rlm@3: 			if ($timestamp > $duration) {
rlm@3: 				$duration = $timestamp;
rlm@3: 			}
rlm@3: 
rlm@3: 			fseek($this->getid3->fp, $next_offset, SEEK_SET);
rlm@3: 		}
rlm@3: 
rlm@3: 		if ($info['playtime_seconds'] = $duration / 1000) {
rlm@3: 		    $info['bitrate'] = ($info['avdataend'] - $info['avdataoffset']) / $info['playtime_seconds'];
rlm@3: 		}
rlm@3: 
rlm@3: 		if ($info_flv['header']['hasAudio']) {
rlm@3: 			$info['audio']['codec']           = $this->FLVaudioFormat($info_flv['audio']['audioFormat']);
rlm@3: 			$info['audio']['sample_rate']     = $this->FLVaudioRate($info_flv['audio']['audioRate']);
rlm@3: 			$info['audio']['bits_per_sample'] = $this->FLVaudioBitDepth($info_flv['audio']['audioSampleSize']);
rlm@3: 
rlm@3: 			$info['audio']['channels']   = $info_flv['audio']['audioType'] + 1; // 0=mono,1=stereo
rlm@3: 			$info['audio']['lossless']   = ($info_flv['audio']['audioFormat'] ? false : true); // 0=uncompressed
rlm@3: 			$info['audio']['dataformat'] = 'flv';
rlm@3: 		}
rlm@3: 		if (@$info_flv['header']['hasVideo']) {
rlm@3: 			$info['video']['codec']      = $this->FLVvideoCodec($info_flv['video']['videoCodec']);
rlm@3: 			$info['video']['dataformat'] = 'flv';
rlm@3: 			$info['video']['lossless']   = false;
rlm@3: 		}
rlm@3: 
rlm@3: 		return true;
rlm@3: 	}
rlm@3: 
rlm@3: 
rlm@3: 	public static function FLVaudioFormat($id) {
rlm@3: 	    
rlm@3: 		static $lookup = array(
rlm@3: 			0 => 'uncompressed',
rlm@3: 			1 => 'ADPCM',
rlm@3: 			2 => 'mp3',
rlm@3: 			5 => 'Nellymoser 8kHz mono',
rlm@3: 			6 => 'Nellymoser',
rlm@3: 		);
rlm@3: 		return (@$lookup[$id] ? @$lookup[$id] : false);
rlm@3: 	}
rlm@3: 
rlm@3: 
rlm@3: 	public static function FLVaudioRate($id) {
rlm@3: 	    
rlm@3: 		static $lookup = array(
rlm@3: 			0 =>  5500,
rlm@3: 			1 => 11025,
rlm@3: 			2 => 22050,
rlm@3: 			3 => 44100,
rlm@3: 		);
rlm@3: 		return (@$lookup[$id] ? @$lookup[$id] : false);
rlm@3: 	}
rlm@3: 
rlm@3: 
rlm@3: 	public static function FLVaudioBitDepth($id) {
rlm@3: 	    
rlm@3: 		static $lookup = array(
rlm@3: 			0 =>  8,
rlm@3: 			1 => 16,
rlm@3: 		);
rlm@3: 		return (@$lookup[$id] ? @$lookup[$id] : false);
rlm@3: 	}
rlm@3: 
rlm@3: 
rlm@3: 	public static function FLVvideoCodec($id) {
rlm@3: 	    
rlm@3: 		static $lookup = array(
rlm@3: 			getid3_flv::VIDEO_H263   => 'Sorenson H.263',
rlm@3: 			getid3_flv::VIDEO_SCREEN => 'Screen video',
rlm@3: 			getid3_flv::VIDEO_VP6    => 'On2 VP6',
rlm@3: 		);
rlm@3: 		return (@$lookup[$id] ? @$lookup[$id] : false);
rlm@3: 	}
rlm@3: }
rlm@3: 
rlm@3: 
rlm@3: 
rlm@3: class AMFStream 
rlm@3: {
rlm@3: 	public $bytes;
rlm@3: 	public $pos;
rlm@3: 
rlm@3: 
rlm@3: 	public function AMFStream($bytes) {
rlm@3: 	    
rlm@3: 		$this->bytes = $bytes;
rlm@3: 		$this->pos = 0;
rlm@3: 	}
rlm@3: 
rlm@3: 
rlm@3: 	public function readByte() {
rlm@3: 	    
rlm@3: 		return getid3_lib::BigEndian2Int(substr($this->bytes, $this->pos++, 1));
rlm@3: 	}
rlm@3: 
rlm@3: 
rlm@3: 	public function readInt() {
rlm@3: 	    
rlm@3: 		return ($this->readByte() << 8) + $this->readByte();
rlm@3: 	}
rlm@3: 
rlm@3: 
rlm@3: 	public function readLong() {
rlm@3: 	    
rlm@3: 		return ($this->readByte() << 24) + ($this->readByte() << 16) + ($this->readByte() << 8) + $this->readByte();
rlm@3: 	}
rlm@3: 
rlm@3: 
rlm@3: 	public function readDouble() {
rlm@3: 	    
rlm@3: 		return getid3_lib::BigEndian2Float($this->read(8));
rlm@3: 	}
rlm@3: 
rlm@3: 
rlm@3: 	public function readUTF() {
rlm@3: 	    
rlm@3: 		$length = $this->readInt();
rlm@3: 		return $this->read($length);
rlm@3: 	}
rlm@3: 
rlm@3: 
rlm@3: 	public function readLongUTF() {
rlm@3: 	    
rlm@3: 		$length = $this->readLong();
rlm@3: 		return $this->read($length);
rlm@3: 	}
rlm@3: 
rlm@3: 
rlm@3: 	public function read($length) {
rlm@3: 
rlm@3: 		$val = substr($this->bytes, $this->pos, $length);
rlm@3: 		$this->pos += $length;
rlm@3: 		return $val;
rlm@3: 	}
rlm@3: 
rlm@3: 	
rlm@3: 	public function peekByte() {
rlm@3: 	    
rlm@3: 		$pos = $this->pos;
rlm@3: 		$val = $this->readByte();
rlm@3: 		$this->pos = $pos;
rlm@3: 		return $val;
rlm@3: 	}
rlm@3: 
rlm@3: 
rlm@3: 	public function peekInt() {
rlm@3: 
rlm@3: 		$pos = $this->pos;
rlm@3: 		$val = $this->readInt();
rlm@3: 		$this->pos = $pos;
rlm@3: 		return $val;
rlm@3: 	}
rlm@3: 
rlm@3: 
rlm@3: 	public function peekLong() {
rlm@3: 	    
rlm@3: 		$pos = $this->pos;
rlm@3: 		$val = $this->readLong();
rlm@3: 		$this->pos = $pos;
rlm@3: 		return $val;
rlm@3: 	}
rlm@3: 
rlm@3: 
rlm@3: 	public function peekDouble() {  
rlm@3: 	    
rlm@3: 		$pos = $this->pos;
rlm@3: 		$val = $this->readDouble();
rlm@3: 		$this->pos = $pos;
rlm@3: 		return $val;
rlm@3: 	}
rlm@3: 
rlm@3: 
rlm@3: 	public function peekUTF() {
rlm@3: 	    
rlm@3: 		$pos = $this->pos;
rlm@3: 		$val = $this->readUTF();
rlm@3: 		$this->pos = $pos;
rlm@3: 		return $val;
rlm@3: 	}
rlm@3: 
rlm@3: 
rlm@3: 	public function peekLongUTF() {
rlm@3: 	    
rlm@3: 		$pos = $this->pos;
rlm@3: 		$val = $this->readLongUTF();
rlm@3: 		$this->pos = $pos;
rlm@3: 		return $val;
rlm@3: 	}
rlm@3: }
rlm@3: 
rlm@3: 
rlm@3: 
rlm@3: class AMFReader 
rlm@3: {
rlm@3: 	public $stream;
rlm@3: 
rlm@3: 	public function __construct($stream) {
rlm@3: 	    
rlm@3: 		$this->stream = $stream;
rlm@3: 	}
rlm@3: 
rlm@3: 
rlm@3: 	public function readData() {
rlm@3: 	    
rlm@3: 		$value = null;
rlm@3: 
rlm@3: 		$type = $this->stream->readByte();
rlm@3: 
rlm@3: 		switch($type) {
rlm@3: 			// Double
rlm@3: 			case 0:
rlm@3: 				$value = $this->readDouble();
rlm@3: 			break;
rlm@3: 
rlm@3: 			// Boolean
rlm@3: 			case 1:
rlm@3: 				$value = $this->readBoolean();
rlm@3: 				break;
rlm@3: 
rlm@3: 			// String
rlm@3: 			case 2:
rlm@3: 				$value = $this->readString();
rlm@3: 				break;
rlm@3: 
rlm@3: 			// Object
rlm@3: 			case 3:
rlm@3: 				$value = $this->readObject();
rlm@3: 				break;
rlm@3: 
rlm@3: 			// null
rlm@3: 			case 6:
rlm@3: 				return null;
rlm@3: 				break;
rlm@3: 
rlm@3: 			// Mixed array
rlm@3: 			case 8:
rlm@3: 				$value = $this->readMixedArray();
rlm@3: 				break;
rlm@3: 
rlm@3: 			// Array
rlm@3: 			case 10:
rlm@3: 				$value = $this->readArray();
rlm@3: 				break;
rlm@3: 
rlm@3: 			// Date
rlm@3: 			case 11:
rlm@3: 				$value = $this->readDate();
rlm@3: 				break;
rlm@3: 
rlm@3: 			// Long string
rlm@3: 			case 13:
rlm@3: 				$value = $this->readLongString();
rlm@3: 				break;
rlm@3: 
rlm@3: 			// XML (handled as string)
rlm@3: 			case 15:
rlm@3: 				$value = $this->readXML();
rlm@3: 				break;
rlm@3: 
rlm@3: 			// Typed object (handled as object)
rlm@3: 			case 16:
rlm@3: 				$value = $this->readTypedObject();
rlm@3: 				break;
rlm@3: 
rlm@3: 			// Long string
rlm@3: 			default:
rlm@3: 				$value = '(unknown or unsupported data type)';
rlm@3: 			break;
rlm@3: 		}
rlm@3: 
rlm@3: 		return $value;
rlm@3: 	}
rlm@3: 
rlm@3: 
rlm@3: 	public function readDouble() {    
rlm@3: 	    
rlm@3: 		return $this->stream->readDouble();
rlm@3: 	}
rlm@3: 
rlm@3: 
rlm@3: 	public function readBoolean() {
rlm@3: 	    
rlm@3: 		return $this->stream->readByte() == 1;
rlm@3: 	}
rlm@3:            
rlm@3:            
rlm@3: 	public function readString() {
rlm@3: 	    
rlm@3: 		return $this->stream->readUTF();
rlm@3: 	}
rlm@3: 
rlm@3: 
rlm@3: 	public function readObject() {
rlm@3: 	    
rlm@3: 		// Get highest numerical index - ignored
rlm@3: 		$highestIndex = $this->stream->readLong();
rlm@3: 
rlm@3: 		$data = array();
rlm@3: 
rlm@3: 		while ($key = $this->stream->readUTF()) {
rlm@3: 			// Mixed array record ends with empty string (0x00 0x00) and 0x09
rlm@3: 			if (($key == '') && ($this->stream->peekByte() == 0x09)) {
rlm@3: 				// Consume byte
rlm@3: 				$this->stream->readByte();
rlm@3: 				break;
rlm@3: 			}
rlm@3: 
rlm@3: 			$data[$key] = $this->readData();
rlm@3: 		}
rlm@3: 
rlm@3: 		return $data;
rlm@3: 	}
rlm@3: 
rlm@3: 
rlm@3: 	public function readMixedArray() {
rlm@3: 	    
rlm@3: 		// Get highest numerical index - ignored
rlm@3: 		$highestIndex = $this->stream->readLong();
rlm@3: 
rlm@3: 		$data = array();
rlm@3: 
rlm@3: 		while ($key = $this->stream->readUTF()) {
rlm@3: 			// Mixed array record ends with empty string (0x00 0x00) and 0x09
rlm@3: 			if (($key == '') && ($this->stream->peekByte() == 0x09)) {
rlm@3: 				// Consume byte
rlm@3: 				$this->stream->readByte();
rlm@3: 				break;
rlm@3: 			}
rlm@3: 
rlm@3: 			if (is_numeric($key)) {
rlm@3: 				$key = (float) $key;
rlm@3: 			}
rlm@3: 
rlm@3: 			$data[$key] = $this->readData();
rlm@3: 		}
rlm@3: 
rlm@3: 		return $data;
rlm@3: 	}
rlm@3: 
rlm@3: 
rlm@3: 	public function readArray() {
rlm@3: 	    
rlm@3: 		$length = $this->stream->readLong();
rlm@3: 
rlm@3: 		$data = array();
rlm@3: 
rlm@3: 		for ($i = 0; $i < count($length); $i++) {
rlm@3: 			$data[] = $this->readData();
rlm@3: 		}
rlm@3: 
rlm@3: 		return $data;
rlm@3: 	}
rlm@3: 
rlm@3: 
rlm@3: 	public function readDate() {
rlm@3: 	    
rlm@3: 		$timestamp = $this->stream->readDouble();
rlm@3: 		$timezone = $this->stream->readInt();
rlm@3: 		return $timestamp;
rlm@3: 	}
rlm@3: 
rlm@3: 
rlm@3: 	public function readLongString() {
rlm@3: 	    
rlm@3: 		return $this->stream->readLongUTF();
rlm@3: 	}
rlm@3: 
rlm@3: 
rlm@3: 	public function readXML() {
rlm@3: 	    
rlm@3: 		return $this->stream->readLongUTF();
rlm@3: 	}
rlm@3: 
rlm@3: 
rlm@3: 	public function readTypedObject() {  
rlm@3: 	    
rlm@3: 		$className = $this->stream->readUTF();
rlm@3: 		return $this->readObject();
rlm@3: 	}
rlm@3: }
rlm@3: 
rlm@3: ?>