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module.audio-video.flv.php @ 3544

Last change on this file since 3544 was 3544, checked in by vdigital, 15 years ago
Change: getid3 upgraded to -> 1.7.9
Property svn:eol-style set to `LF` Property svn:keywords set to `Author Date Id Revision`
File size: 14.5 KB

Line
1	<?php
2	/////////////////////////////////////////////////////////////////
3	/// getID3() by James Heinrich <info@getid3.org> //
4	// available at http://getid3.sourceforge.net //
5	// or http://www.getid3.org //
6	// //
7	// FLV module by Seth Kaufman <seth@whirl-i-gig.com> //
8	// //
9	// * version 0.1 (26 June 2005) //
10	// //
11	// minor modifications by James Heinrich <info@getid3.org> //
12	// * version 0.1.1 (15 July 2005) //
13	// //
14	// Support for On2 VP6 codec and meta information //
15	// by Steve Webster <steve.webster@featurecreep.com> //
16	// * version 0.2 (22 February 2006) //
17	// //
18	// Modified to not read entire file into memory //
19	// by James Heinrich <info@getid3.org> //
20	// * version 0.3 (15 June 2006) //
21	// //
22	// Bugfixes for incorrectly parsed FLV dimensions //
23	// and incorrect parsing of onMetaTag //
24	// by Evgeny Moysevich <moysevich@gmail.com> //
25	// * version 0.4 (07 December 2007) //
26	// //
27	/////////////////////////////////////////////////////////////////
28	// //
29	// module.audio-video.flv.php //
30	// module for analyzing Shockwave Flash Video files //
31	// dependencies: NONE //
32	// ///
33	/////////////////////////////////////////////////////////////////
34
35	define('GETID3_FLV_TAG_AUDIO', 8);
36	define('GETID3_FLV_TAG_VIDEO', 9);
37	define('GETID3_FLV_TAG_META', 18);
38
39	define('GETID3_FLV_VIDEO_H263', 2);
40	define('GETID3_FLV_VIDEO_SCREEN', 3);
41	define('GETID3_FLV_VIDEO_VP6', 4);
42
43	class getid3_flv
44	{
45
46	function getid3_flv(&$fd, &$ThisFileInfo, $ReturnAllTagData=false) {
47	//$start_time = microtime(true);
48	fseek($fd, $ThisFileInfo['avdataoffset'], SEEK_SET);
49
50	$FLVdataLength = $ThisFileInfo['avdataend'] - $ThisFileInfo['avdataoffset'];
51	$FLVheader = fread($fd, 5);
52
53	$ThisFileInfo['fileformat'] = 'flv';
54	$ThisFileInfo['flv']['header']['signature'] = substr($FLVheader, 0, 3);
55	$ThisFileInfo['flv']['header']['version'] = getid3_lib::BigEndian2Int(substr($FLVheader, 3, 1));
56	$TypeFlags = getid3_lib::BigEndian2Int(substr($FLVheader, 4, 1));
57
58	if ($ThisFileInfo['flv']['header']['signature'] != 'FLV') {
59	$ThisFileInfo['error'][] = 'Expecting "FLV" at offset '.$ThisFileInfo['avdataoffset'].', found "'.$ThisFileInfo['flv']['header']['signature'].'"';
60	unset($ThisFileInfo['flv']);
61	unset($ThisFileInfo['fileformat']);
62	return false;
63	}
64
65	$ThisFileInfo['flv']['header']['hasAudio'] = (bool) ($TypeFlags & 0x04);
66	$ThisFileInfo['flv']['header']['hasVideo'] = (bool) ($TypeFlags & 0x01);
67
68	$FrameSizeDataLength = getid3_lib::BigEndian2Int(fread($fd, 4));
69	$FLVheaderFrameLength = 9;
70	if ($FrameSizeDataLength > $FLVheaderFrameLength) {
71	fseek($fd, $FrameSizeDataLength - $FLVheaderFrameLength, SEEK_CUR);
72	}
73	//echo __LINE__.'='.number_format(microtime(true) - $start_time, 3).'<br>';
74
75	$Duration = 0;
76	$found_video = false;
77	$found_audio = false;
78	$found_meta = false;
79	while ((ftell($fd) + 16) < $ThisFileInfo['avdataend']) {
80	$ThisTagHeader = fread($fd, 16);
81
82	$PreviousTagLength = getid3_lib::BigEndian2Int(substr($ThisTagHeader, 0, 4));
83	$TagType = getid3_lib::BigEndian2Int(substr($ThisTagHeader, 4, 1));
84	$DataLength = getid3_lib::BigEndian2Int(substr($ThisTagHeader, 5, 3));
85	$Timestamp = getid3_lib::BigEndian2Int(substr($ThisTagHeader, 8, 3));
86	$LastHeaderByte = getid3_lib::BigEndian2Int(substr($ThisTagHeader, 15, 1));
87	$NextOffset = ftell($fd) - 1 + $DataLength;
88	if ($Timestamp > $Duration) {
89	$Duration = $Timestamp;
90	}
91
92	//echo __LINE__.'['.ftell($fd).']=('.$TagType.')='.number_format(microtime(true) - $start_time, 3).'<br>';
93
94	switch ($TagType) {
95	case GETID3_FLV_TAG_AUDIO:
96	if (!$found_audio) {
97	$found_audio = true;
98	$ThisFileInfo['flv']['audio']['audioFormat'] = $LastHeaderByte & 0x07;
99	$ThisFileInfo['flv']['audio']['audioRate'] = ($LastHeaderByte & 0x30) / 0x10;
100	$ThisFileInfo['flv']['audio']['audioSampleSize'] = ($LastHeaderByte & 0x40) / 0x40;
101	$ThisFileInfo['flv']['audio']['audioType'] = ($LastHeaderByte & 0x80) / 0x80;
102	}
103	break;
104
105	case GETID3_FLV_TAG_VIDEO:
106	if (!$found_video) {
107	$found_video = true;
108	$ThisFileInfo['flv']['video']['videoCodec'] = $LastHeaderByte & 0x07;
109
110	$FLVvideoHeader = fread($fd, 11);
111
112	if ($ThisFileInfo['flv']['video']['videoCodec'] != GETID3_FLV_VIDEO_VP6) {
113
114	$PictureSizeType = (getid3_lib::BigEndian2Int(substr($FLVvideoHeader, 3, 2))) >> 7;
115	$PictureSizeType = $PictureSizeType & 0x0007;
116	$ThisFileInfo['flv']['header']['videoSizeType'] = $PictureSizeType;
117	switch ($PictureSizeType) {
118	case 0:
119	//$PictureSizeEnc = getid3_lib::BigEndian2Int(substr($FLVvideoHeader, 5, 2));
120	//$PictureSizeEnc <<= 1;
121	//$ThisFileInfo['video']['resolution_x'] = ($PictureSizeEnc & 0xFF00) >> 8;
122	//$PictureSizeEnc = getid3_lib::BigEndian2Int(substr($FLVvideoHeader, 6, 2));
123	//$PictureSizeEnc <<= 1;
124	//$ThisFileInfo['video']['resolution_y'] = ($PictureSizeEnc & 0xFF00) >> 8;
125
126	$PictureSizeEnc['x'] = getid3_lib::BigEndian2Int(substr($FLVvideoHeader, 4, 2));
127	$PictureSizeEnc['y'] = getid3_lib::BigEndian2Int(substr($FLVvideoHeader, 5, 2));
128	$PictureSizeEnc['x'] >>= 7;
129	$PictureSizeEnc['y'] >>= 7;
130	$ThisFileInfo['video']['resolution_x'] = $PictureSizeEnc['x'] & 0xFF;
131	$ThisFileInfo['video']['resolution_y'] = $PictureSizeEnc['y'] & 0xFF;
132	break;
133
134	case 1:
135	$PictureSizeEnc['x'] = getid3_lib::BigEndian2Int(substr($FLVvideoHeader, 4, 3));
136	$PictureSizeEnc['y'] = getid3_lib::BigEndian2Int(substr($FLVvideoHeader, 6, 3));
137	$PictureSizeEnc['x'] >>= 7;
138	$PictureSizeEnc['y'] >>= 7;
139	$ThisFileInfo['video']['resolution_x'] = $PictureSizeEnc['x'] & 0xFFFF;
140	$ThisFileInfo['video']['resolution_y'] = $PictureSizeEnc['y'] & 0xFFFF;
141	break;
142
143	case 2:
144	$ThisFileInfo['video']['resolution_x'] = 352;
145	$ThisFileInfo['video']['resolution_y'] = 288;
146	break;
147
148	case 3:
149	$ThisFileInfo['video']['resolution_x'] = 176;
150	$ThisFileInfo['video']['resolution_y'] = 144;
151	break;
152
153	case 4:
154	$ThisFileInfo['video']['resolution_x'] = 128;
155	$ThisFileInfo['video']['resolution_y'] = 96;
156	break;
157
158	case 5:
159	$ThisFileInfo['video']['resolution_x'] = 320;
160	$ThisFileInfo['video']['resolution_y'] = 240;
161	break;
162
163	case 6:
164	$ThisFileInfo['video']['resolution_x'] = 160;
165	$ThisFileInfo['video']['resolution_y'] = 120;
166	break;
167
168	default:
169	$ThisFileInfo['video']['resolution_x'] = 0;
170	$ThisFileInfo['video']['resolution_y'] = 0;
171	break;
172
173	}
174	}
175	}
176	break;
177
178	// Meta tag
179	case GETID3_FLV_TAG_META:
180	if (!$found_meta) {
181	$found_meta = true;
182	fseek($fd, -1, SEEK_CUR);
183	$reader = new AMFReader(new AMFStream(fread($fd, $DataLength)));
184	$eventName = $reader->readData();
185	$ThisFileInfo['meta'][$eventName] = $reader->readData();
186	unset($reader);
187
188	$ThisFileInfo['video']['frame_rate'] = @$ThisFileInfo['meta']['onMetaData']['framerate'];
189	$ThisFileInfo['video']['resolution_x'] = @$ThisFileInfo['meta']['onMetaData']['width'];
190	$ThisFileInfo['video']['resolution_y'] = @$ThisFileInfo['meta']['onMetaData']['height'];
191	}
192	break;
193
194	default:
195	// noop
196	break;
197	}
198
199	fseek($fd, $NextOffset, SEEK_SET);
200	}
201
202	if ($ThisFileInfo['playtime_seconds'] = $Duration / 1000) {
203	$ThisFileInfo['bitrate'] = ($ThisFileInfo['avdataend'] - $ThisFileInfo['avdataoffset']) / $ThisFileInfo['playtime_seconds'];
204	}
205
206	if ($ThisFileInfo['flv']['header']['hasAudio']) {
207	$ThisFileInfo['audio']['codec'] = $this->FLVaudioFormat($ThisFileInfo['flv']['audio']['audioFormat']);
208	$ThisFileInfo['audio']['sample_rate'] = $this->FLVaudioRate($ThisFileInfo['flv']['audio']['audioRate']);
209	$ThisFileInfo['audio']['bits_per_sample'] = $this->FLVaudioBitDepth($ThisFileInfo['flv']['audio']['audioSampleSize']);
210
211	$ThisFileInfo['audio']['channels'] = $ThisFileInfo['flv']['audio']['audioType'] + 1; // 0=mono,1=stereo
212	$ThisFileInfo['audio']['lossless'] = ($ThisFileInfo['flv']['audio']['audioFormat'] ? false : true); // 0=uncompressed
213	$ThisFileInfo['audio']['dataformat'] = 'flv';
214	}
215	if (@$ThisFileInfo['flv']['header']['hasVideo']) {
216	$ThisFileInfo['video']['codec'] = $this->FLVvideoCodec($ThisFileInfo['flv']['video']['videoCodec']);
217	$ThisFileInfo['video']['dataformat'] = 'flv';
218	$ThisFileInfo['video']['lossless'] = false;
219	}
220
221	return true;
222	}
223
224
225	function FLVaudioFormat($id) {
226	$FLVaudioFormat = array(
227	0 => 'uncompressed',
228	1 => 'ADPCM',
229	2 => 'mp3',
230	5 => 'Nellymoser 8kHz mono',
231	6 => 'Nellymoser',
232	);
233	return (@$FLVaudioFormat[$id] ? @$FLVaudioFormat[$id] : false);
234	}
235
236	function FLVaudioRate($id) {
237	$FLVaudioRate = array(
238	0 => 5500,
239	1 => 11025,
240	2 => 22050,
241	3 => 44100,
242	);
243	return (@$FLVaudioRate[$id] ? @$FLVaudioRate[$id] : false);
244	}
245
246	function FLVaudioBitDepth($id) {
247	$FLVaudioBitDepth = array(
248	0 => 8,
249	1 => 16,
250	);
251	return (@$FLVaudioBitDepth[$id] ? @$FLVaudioBitDepth[$id] : false);
252	}
253
254	function FLVvideoCodec($id) {
255	$FLVvideoCodec = array(
256	GETID3_FLV_VIDEO_H263 => 'Sorenson H.263',
257	GETID3_FLV_VIDEO_SCREEN => 'Screen video',
258	GETID3_FLV_VIDEO_VP6 => 'On2 VP6',
259	);
260	return (@$FLVvideoCodec[$id] ? @$FLVvideoCodec[$id] : false);
261	}
262	}
263
264	class AMFStream {
265	var $bytes;
266	var $pos;
267
268	function AMFStream(&$bytes) {
269	$this->bytes =& $bytes;
270	$this->pos = 0;
271	}
272
273	function readByte() {
274	return getid3_lib::BigEndian2Int(substr($this->bytes, $this->pos++, 1));
275	}
276
277	function readInt() {
278	return ($this->readByte() << 8) + $this->readByte();
279	}
280
281	function readLong() {
282	return ($this->readByte() << 24) + ($this->readByte() << 16) + ($this->readByte() << 8) + $this->readByte();
283	}
284
285	function readDouble() {
286	return getid3_lib::BigEndian2Float($this->read(8));
287	}
288
289	function readUTF() {
290	$length = $this->readInt();
291	return $this->read($length);
292	}
293
294	function readLongUTF() {
295	$length = $this->readLong();
296	return $this->read($length);
297	}
298
299	function read($length) {
300	$val = substr($this->bytes, $this->pos, $length);
301	$this->pos += $length;
302	return $val;
303	}
304
305	function peekByte() {
306	$pos = $this->pos;
307	$val = $this->readByte();
308	$this->pos = $pos;
309	return $val;
310	}
311
312	function peekInt() {
313	$pos = $this->pos;
314	$val = $this->readInt();
315	$this->pos = $pos;
316	return $val;
317	}
318
319	function peekLong() {
320	$pos = $this->pos;
321	$val = $this->readLong();
322	$this->pos = $pos;
323	return $val;
324	}
325
326	function peekDouble() {
327	$pos = $this->pos;
328	$val = $this->readDouble();
329	$this->pos = $pos;
330	return $val;
331	}
332
333	function peekUTF() {
334	$pos = $this->pos;
335	$val = $this->readUTF();
336	$this->pos = $pos;
337	return $val;
338	}
339
340	function peekLongUTF() {
341	$pos = $this->pos;
342	$val = $this->readLongUTF();
343	$this->pos = $pos;
344	return $val;
345	}
346	}
347
348	class AMFReader {
349	var $stream;
350
351	function AMFReader(&$stream) {
352	$this->stream =& $stream;
353	}
354
355	function readData() {
356	$value = null;
357
358	$type = $this->stream->readByte();
359	switch ($type) {
360
361	// Double
362	case 0:
363	$value = $this->readDouble();
364	break;
365
366	// Boolean
367	case 1:
368	$value = $this->readBoolean();
369	break;
370
371	// String
372	case 2:
373	$value = $this->readString();
374	break;
375
376	// Object
377	case 3:
378	$value = $this->readObject();
379	break;
380
381	// null
382	case 6:
383	return null;
384	break;
385
386	// Mixed array
387	case 8:
388	$value = $this->readMixedArray();
389	break;
390
391	// Array
392	case 10:
393	$value = $this->readArray();
394	break;
395
396	// Date
397	case 11:
398	$value = $this->readDate();
399	break;
400
401	// Long string
402	case 13:
403	$value = $this->readLongString();
404	break;
405
406	// XML (handled as string)
407	case 15:
408	$value = $this->readXML();
409	break;
410
411	// Typed object (handled as object)
412	case 16:
413	$value = $this->readTypedObject();
414	break;
415
416	// Long string
417	default:
418	$value = '(unknown or unsupported data type)';
419	break;
420	}
421
422	return $value;
423	}
424
425	function readDouble() {
426	return $this->stream->readDouble();
427	}
428
429	function readBoolean() {
430	return $this->stream->readByte() == 1;
431	}
432
433	function readString() {
434	return $this->stream->readUTF();
435	}
436
437	function readObject() {
438	// Get highest numerical index - ignored
439	// $highestIndex = $this->stream->readLong();
440
441	$data = array();
442
443	while ($key = $this->stream->readUTF()) {
444	$data[$key] = $this->readData();
445	}
446	// Mixed array record ends with empty string (0x00 0x00) and 0x09
447	if (($key == '') && ($this->stream->peekByte() == 0x09)) {
448	// Consume byte
449	$this->stream->readByte();
450	}
451	return $data;
452	}
453
454	function readMixedArray() {
455	// Get highest numerical index - ignored
456	$highestIndex = $this->stream->readLong();
457
458	$data = array();
459
460	while ($key = $this->stream->readUTF()) {
461	if (is_numeric($key)) {
462	$key = (float) $key;
463	}
464	$data[$key] = $this->readData();
465	}
466	// Mixed array record ends with empty string (0x00 0x00) and 0x09
467	if (($key == '') && ($this->stream->peekByte() == 0x09)) {
468	// Consume byte
469	$this->stream->readByte();
470	}
471
472	return $data;
473	}
474
475	function readArray() {
476	$length = $this->stream->readLong();
477	$data = array();
478
479	for ($i = 0; $i < $length; $i++) {
480	$data[] = $this->readData();
481	}
482	return $data;
483	}
484
485	function readDate() {
486	$timestamp = $this->stream->readDouble();
487	$timezone = $this->stream->readInt();
488	return $timestamp;
489	}
490
491	function readLongString() {
492	return $this->stream->readLongUTF();
493	}
494
495	function readXML() {
496	return $this->stream->readLongUTF();
497	}
498
499	function readTypedObject() {
500	$className = $this->stream->readUTF();
501	return $this->readObject();
502	}
503	}
504
505	?>

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