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