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