505 lines
14 KiB
PHP
505 lines
14 KiB
PHP
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<?php
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/////////////////////////////////////////////////////////////////
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/// getID3() by James Heinrich <info@getid3.org> //
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// available at http://getid3.sourceforge.net //
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// or http://www.getid3.org //
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// //
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// FLV module by Seth Kaufman <seth@whirl-i-gig.com> //
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// //
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// * version 0.1 (26 June 2005) //
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// //
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// minor modifications by James Heinrich <info@getid3.org> //
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// * version 0.1.1 (15 July 2005) //
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// //
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// Support for On2 VP6 codec and meta information //
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// by Steve Webster <steve.webster@featurecreep.com> //
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// * version 0.2 (22 February 2006) //
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// //
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// Modified to not read entire file into memory //
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// by James Heinrich <info@getid3.org> //
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// * version 0.3 (15 June 2006) //
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// //
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// Bugfixes for incorrectly parsed FLV dimensions //
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// and incorrect parsing of onMetaTag //
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// by Evgeny Moysevich <moysevich@gmail.com> //
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// * version 0.4 (07 December 2007) //
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// //
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/////////////////////////////////////////////////////////////////
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// //
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// module.audio-video.flv.php //
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// module for analyzing Shockwave Flash Video files //
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// dependencies: NONE //
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// ///
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/////////////////////////////////////////////////////////////////
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define('GETID3_FLV_TAG_AUDIO', 8);
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define('GETID3_FLV_TAG_VIDEO', 9);
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define('GETID3_FLV_TAG_META', 18);
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define('GETID3_FLV_VIDEO_H263', 2);
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define('GETID3_FLV_VIDEO_SCREEN', 3);
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define('GETID3_FLV_VIDEO_VP6', 4);
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class getid3_flv
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{
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function getid3_flv(&$fd, &$ThisFileInfo, $ReturnAllTagData=false) {
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//$start_time = microtime(true);
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fseek($fd, $ThisFileInfo['avdataoffset'], SEEK_SET);
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$FLVdataLength = $ThisFileInfo['avdataend'] - $ThisFileInfo['avdataoffset'];
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$FLVheader = fread($fd, 5);
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$ThisFileInfo['fileformat'] = 'flv';
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$ThisFileInfo['flv']['header']['signature'] = substr($FLVheader, 0, 3);
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$ThisFileInfo['flv']['header']['version'] = getid3_lib::BigEndian2Int(substr($FLVheader, 3, 1));
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$TypeFlags = getid3_lib::BigEndian2Int(substr($FLVheader, 4, 1));
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if ($ThisFileInfo['flv']['header']['signature'] != 'FLV') {
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$ThisFileInfo['error'][] = 'Expecting "FLV" at offset '.$ThisFileInfo['avdataoffset'].', found "'.$ThisFileInfo['flv']['header']['signature'].'"';
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unset($ThisFileInfo['flv']);
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unset($ThisFileInfo['fileformat']);
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return false;
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}
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$ThisFileInfo['flv']['header']['hasAudio'] = (bool) ($TypeFlags & 0x04);
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$ThisFileInfo['flv']['header']['hasVideo'] = (bool) ($TypeFlags & 0x01);
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$FrameSizeDataLength = getid3_lib::BigEndian2Int(fread($fd, 4));
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$FLVheaderFrameLength = 9;
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if ($FrameSizeDataLength > $FLVheaderFrameLength) {
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fseek($fd, $FrameSizeDataLength - $FLVheaderFrameLength, SEEK_CUR);
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}
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//echo __LINE__.'='.number_format(microtime(true) - $start_time, 3).'<br>';
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$Duration = 0;
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$found_video = false;
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$found_audio = false;
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$found_meta = false;
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while ((ftell($fd) + 16) < $ThisFileInfo['avdataend']) {
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$ThisTagHeader = fread($fd, 16);
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$PreviousTagLength = getid3_lib::BigEndian2Int(substr($ThisTagHeader, 0, 4));
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$TagType = getid3_lib::BigEndian2Int(substr($ThisTagHeader, 4, 1));
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$DataLength = getid3_lib::BigEndian2Int(substr($ThisTagHeader, 5, 3));
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$Timestamp = getid3_lib::BigEndian2Int(substr($ThisTagHeader, 8, 3));
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$LastHeaderByte = getid3_lib::BigEndian2Int(substr($ThisTagHeader, 15, 1));
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$NextOffset = ftell($fd) - 1 + $DataLength;
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if ($Timestamp > $Duration) {
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$Duration = $Timestamp;
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}
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//echo __LINE__.'['.ftell($fd).']=('.$TagType.')='.number_format(microtime(true) - $start_time, 3).'<br>';
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switch ($TagType) {
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case GETID3_FLV_TAG_AUDIO:
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if (!$found_audio) {
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$found_audio = true;
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$ThisFileInfo['flv']['audio']['audioFormat'] = $LastHeaderByte & 0x07;
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$ThisFileInfo['flv']['audio']['audioRate'] = ($LastHeaderByte & 0x30) / 0x10;
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$ThisFileInfo['flv']['audio']['audioSampleSize'] = ($LastHeaderByte & 0x40) / 0x40;
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$ThisFileInfo['flv']['audio']['audioType'] = ($LastHeaderByte & 0x80) / 0x80;
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}
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break;
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case GETID3_FLV_TAG_VIDEO:
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if (!$found_video) {
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$found_video = true;
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$ThisFileInfo['flv']['video']['videoCodec'] = $LastHeaderByte & 0x07;
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$FLVvideoHeader = fread($fd, 11);
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if ($ThisFileInfo['flv']['video']['videoCodec'] != GETID3_FLV_VIDEO_VP6) {
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$PictureSizeType = (getid3_lib::BigEndian2Int(substr($FLVvideoHeader, 3, 2))) >> 7;
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$PictureSizeType = $PictureSizeType & 0x0007;
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$ThisFileInfo['flv']['header']['videoSizeType'] = $PictureSizeType;
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switch ($PictureSizeType) {
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case 0:
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//$PictureSizeEnc = getid3_lib::BigEndian2Int(substr($FLVvideoHeader, 5, 2));
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//$PictureSizeEnc <<= 1;
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//$ThisFileInfo['video']['resolution_x'] = ($PictureSizeEnc & 0xFF00) >> 8;
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//$PictureSizeEnc = getid3_lib::BigEndian2Int(substr($FLVvideoHeader, 6, 2));
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//$PictureSizeEnc <<= 1;
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//$ThisFileInfo['video']['resolution_y'] = ($PictureSizeEnc & 0xFF00) >> 8;
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$PictureSizeEnc['x'] = getid3_lib::BigEndian2Int(substr($FLVvideoHeader, 4, 2));
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$PictureSizeEnc['y'] = getid3_lib::BigEndian2Int(substr($FLVvideoHeader, 5, 2));
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$PictureSizeEnc['x'] >>= 7;
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$PictureSizeEnc['y'] >>= 7;
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$ThisFileInfo['video']['resolution_x'] = $PictureSizeEnc['x'] & 0xFF;
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$ThisFileInfo['video']['resolution_y'] = $PictureSizeEnc['y'] & 0xFF;
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break;
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case 1:
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$PictureSizeEnc['x'] = getid3_lib::BigEndian2Int(substr($FLVvideoHeader, 4, 3));
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$PictureSizeEnc['y'] = getid3_lib::BigEndian2Int(substr($FLVvideoHeader, 6, 3));
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$PictureSizeEnc['x'] >>= 7;
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$PictureSizeEnc['y'] >>= 7;
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$ThisFileInfo['video']['resolution_x'] = $PictureSizeEnc['x'] & 0xFFFF;
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$ThisFileInfo['video']['resolution_y'] = $PictureSizeEnc['y'] & 0xFFFF;
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break;
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case 2:
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$ThisFileInfo['video']['resolution_x'] = 352;
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$ThisFileInfo['video']['resolution_y'] = 288;
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break;
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case 3:
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$ThisFileInfo['video']['resolution_x'] = 176;
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$ThisFileInfo['video']['resolution_y'] = 144;
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break;
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case 4:
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$ThisFileInfo['video']['resolution_x'] = 128;
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$ThisFileInfo['video']['resolution_y'] = 96;
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break;
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case 5:
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$ThisFileInfo['video']['resolution_x'] = 320;
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$ThisFileInfo['video']['resolution_y'] = 240;
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break;
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case 6:
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$ThisFileInfo['video']['resolution_x'] = 160;
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$ThisFileInfo['video']['resolution_y'] = 120;
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break;
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default:
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$ThisFileInfo['video']['resolution_x'] = 0;
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$ThisFileInfo['video']['resolution_y'] = 0;
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break;
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}
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}
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}
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break;
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// Meta tag
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case GETID3_FLV_TAG_META:
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if (!$found_meta) {
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$found_meta = true;
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fseek($fd, -1, SEEK_CUR);
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$reader = new AMFReader(new AMFStream(fread($fd, $DataLength)));
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$eventName = $reader->readData();
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$ThisFileInfo['meta'][$eventName] = $reader->readData();
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unset($reader);
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$ThisFileInfo['video']['frame_rate'] = @$ThisFileInfo['meta']['onMetaData']['framerate'];
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$ThisFileInfo['video']['resolution_x'] = @$ThisFileInfo['meta']['onMetaData']['width'];
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$ThisFileInfo['video']['resolution_y'] = @$ThisFileInfo['meta']['onMetaData']['height'];
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}
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break;
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default:
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// noop
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break;
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}
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fseek($fd, $NextOffset, SEEK_SET);
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}
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if ($ThisFileInfo['playtime_seconds'] = $Duration / 1000) {
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$ThisFileInfo['bitrate'] = ($ThisFileInfo['avdataend'] - $ThisFileInfo['avdataoffset']) / $ThisFileInfo['playtime_seconds'];
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}
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if ($ThisFileInfo['flv']['header']['hasAudio']) {
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$ThisFileInfo['audio']['codec'] = $this->FLVaudioFormat($ThisFileInfo['flv']['audio']['audioFormat']);
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$ThisFileInfo['audio']['sample_rate'] = $this->FLVaudioRate($ThisFileInfo['flv']['audio']['audioRate']);
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$ThisFileInfo['audio']['bits_per_sample'] = $this->FLVaudioBitDepth($ThisFileInfo['flv']['audio']['audioSampleSize']);
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$ThisFileInfo['audio']['channels'] = $ThisFileInfo['flv']['audio']['audioType'] + 1; // 0=mono,1=stereo
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$ThisFileInfo['audio']['lossless'] = ($ThisFileInfo['flv']['audio']['audioFormat'] ? false : true); // 0=uncompressed
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$ThisFileInfo['audio']['dataformat'] = 'flv';
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}
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if (@$ThisFileInfo['flv']['header']['hasVideo']) {
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$ThisFileInfo['video']['codec'] = $this->FLVvideoCodec($ThisFileInfo['flv']['video']['videoCodec']);
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$ThisFileInfo['video']['dataformat'] = 'flv';
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$ThisFileInfo['video']['lossless'] = false;
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}
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return true;
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}
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function FLVaudioFormat($id) {
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$FLVaudioFormat = array(
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0 => 'uncompressed',
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1 => 'ADPCM',
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2 => 'mp3',
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5 => 'Nellymoser 8kHz mono',
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6 => 'Nellymoser',
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);
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return (@$FLVaudioFormat[$id] ? @$FLVaudioFormat[$id] : false);
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}
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function FLVaudioRate($id) {
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$FLVaudioRate = array(
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0 => 5500,
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1 => 11025,
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2 => 22050,
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3 => 44100,
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);
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return (@$FLVaudioRate[$id] ? @$FLVaudioRate[$id] : false);
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}
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function FLVaudioBitDepth($id) {
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$FLVaudioBitDepth = array(
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0 => 8,
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1 => 16,
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);
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return (@$FLVaudioBitDepth[$id] ? @$FLVaudioBitDepth[$id] : false);
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}
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function FLVvideoCodec($id) {
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$FLVvideoCodec = array(
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GETID3_FLV_VIDEO_H263 => 'Sorenson H.263',
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GETID3_FLV_VIDEO_SCREEN => 'Screen video',
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GETID3_FLV_VIDEO_VP6 => 'On2 VP6',
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);
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return (@$FLVvideoCodec[$id] ? @$FLVvideoCodec[$id] : false);
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}
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}
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class AMFStream {
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var $bytes;
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var $pos;
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function AMFStream(&$bytes) {
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$this->bytes =& $bytes;
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$this->pos = 0;
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}
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function readByte() {
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return getid3_lib::BigEndian2Int(substr($this->bytes, $this->pos++, 1));
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}
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function readInt() {
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return ($this->readByte() << 8) + $this->readByte();
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}
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function readLong() {
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return ($this->readByte() << 24) + ($this->readByte() << 16) + ($this->readByte() << 8) + $this->readByte();
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}
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function readDouble() {
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return getid3_lib::BigEndian2Float($this->read(8));
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}
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function readUTF() {
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$length = $this->readInt();
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return $this->read($length);
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}
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function readLongUTF() {
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$length = $this->readLong();
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return $this->read($length);
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}
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function read($length) {
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$val = substr($this->bytes, $this->pos, $length);
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$this->pos += $length;
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return $val;
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}
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function peekByte() {
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$pos = $this->pos;
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$val = $this->readByte();
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$this->pos = $pos;
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return $val;
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}
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function peekInt() {
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$pos = $this->pos;
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$val = $this->readInt();
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$this->pos = $pos;
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return $val;
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}
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function peekLong() {
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$pos = $this->pos;
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$val = $this->readLong();
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$this->pos = $pos;
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return $val;
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}
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function peekDouble() {
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$pos = $this->pos;
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$val = $this->readDouble();
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$this->pos = $pos;
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return $val;
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}
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function peekUTF() {
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$pos = $this->pos;
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$val = $this->readUTF();
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$this->pos = $pos;
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return $val;
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}
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function peekLongUTF() {
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$pos = $this->pos;
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$val = $this->readLongUTF();
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$this->pos = $pos;
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return $val;
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}
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}
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class AMFReader {
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var $stream;
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function AMFReader(&$stream) {
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$this->stream =& $stream;
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}
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||
|
|
|
||
|
|
function readData() {
|
||
|
|
$value = null;
|
||
|
|
|
||
|
|
$type = $this->stream->readByte();
|
||
|
|
switch ($type) {
|
||
|
|
|
||
|
|
// Double
|
||
|
|
case 0:
|
||
|
|
$value = $this->readDouble();
|
||
|
|
break;
|
||
|
|
|
||
|
|
// Boolean
|
||
|
|
case 1:
|
||
|
|
$value = $this->readBoolean();
|
||
|
|
break;
|
||
|
|
|
||
|
|
// String
|
||
|
|
case 2:
|
||
|
|
$value = $this->readString();
|
||
|
|
break;
|
||
|
|
|
||
|
|
// Object
|
||
|
|
case 3:
|
||
|
|
$value = $this->readObject();
|
||
|
|
break;
|
||
|
|
|
||
|
|
// null
|
||
|
|
case 6:
|
||
|
|
return null;
|
||
|
|
break;
|
||
|
|
|
||
|
|
// Mixed array
|
||
|
|
case 8:
|
||
|
|
$value = $this->readMixedArray();
|
||
|
|
break;
|
||
|
|
|
||
|
|
// Array
|
||
|
|
case 10:
|
||
|
|
$value = $this->readArray();
|
||
|
|
break;
|
||
|
|
|
||
|
|
// Date
|
||
|
|
case 11:
|
||
|
|
$value = $this->readDate();
|
||
|
|
break;
|
||
|
|
|
||
|
|
// Long string
|
||
|
|
case 13:
|
||
|
|
$value = $this->readLongString();
|
||
|
|
break;
|
||
|
|
|
||
|
|
// XML (handled as string)
|
||
|
|
case 15:
|
||
|
|
$value = $this->readXML();
|
||
|
|
break;
|
||
|
|
|
||
|
|
// Typed object (handled as object)
|
||
|
|
case 16:
|
||
|
|
$value = $this->readTypedObject();
|
||
|
|
break;
|
||
|
|
|
||
|
|
// Long string
|
||
|
|
default:
|
||
|
|
$value = '(unknown or unsupported data type)';
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
return $value;
|
||
|
|
}
|
||
|
|
|
||
|
|
function readDouble() {
|
||
|
|
return $this->stream->readDouble();
|
||
|
|
}
|
||
|
|
|
||
|
|
function readBoolean() {
|
||
|
|
return $this->stream->readByte() == 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
function readString() {
|
||
|
|
return $this->stream->readUTF();
|
||
|
|
}
|
||
|
|
|
||
|
|
function readObject() {
|
||
|
|
// Get highest numerical index - ignored
|
||
|
|
// $highestIndex = $this->stream->readLong();
|
||
|
|
|
||
|
|
$data = array();
|
||
|
|
|
||
|
|
while ($key = $this->stream->readUTF()) {
|
||
|
|
$data[$key] = $this->readData();
|
||
|
|
}
|
||
|
|
// Mixed array record ends with empty string (0x00 0x00) and 0x09
|
||
|
|
if (($key == '') && ($this->stream->peekByte() == 0x09)) {
|
||
|
|
// Consume byte
|
||
|
|
$this->stream->readByte();
|
||
|
|
}
|
||
|
|
return $data;
|
||
|
|
}
|
||
|
|
|
||
|
|
function readMixedArray() {
|
||
|
|
// Get highest numerical index - ignored
|
||
|
|
$highestIndex = $this->stream->readLong();
|
||
|
|
|
||
|
|
$data = array();
|
||
|
|
|
||
|
|
while ($key = $this->stream->readUTF()) {
|
||
|
|
if (is_numeric($key)) {
|
||
|
|
$key = (float) $key;
|
||
|
|
}
|
||
|
|
$data[$key] = $this->readData();
|
||
|
|
}
|
||
|
|
// Mixed array record ends with empty string (0x00 0x00) and 0x09
|
||
|
|
if (($key == '') && ($this->stream->peekByte() == 0x09)) {
|
||
|
|
// Consume byte
|
||
|
|
$this->stream->readByte();
|
||
|
|
}
|
||
|
|
|
||
|
|
return $data;
|
||
|
|
}
|
||
|
|
|
||
|
|
function readArray() {
|
||
|
|
$length = $this->stream->readLong();
|
||
|
|
$data = array();
|
||
|
|
|
||
|
|
for ($i = 0; $i < $length; $i++) {
|
||
|
|
$data[] = $this->readData();
|
||
|
|
}
|
||
|
|
return $data;
|
||
|
|
}
|
||
|
|
|
||
|
|
function readDate() {
|
||
|
|
$timestamp = $this->stream->readDouble();
|
||
|
|
$timezone = $this->stream->readInt();
|
||
|
|
return $timestamp;
|
||
|
|
}
|
||
|
|
|
||
|
|
function readLongString() {
|
||
|
|
return $this->stream->readLongUTF();
|
||
|
|
}
|
||
|
|
|
||
|
|
function readXML() {
|
||
|
|
return $this->stream->readLongUTF();
|
||
|
|
}
|
||
|
|
|
||
|
|
function readTypedObject() {
|
||
|
|
$className = $this->stream->readUTF();
|
||
|
|
return $this->readObject();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
?>
|