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module.audio-video.real.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: 32.1 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	// See readme.txt for more details //
8	/////////////////////////////////////////////////////////////////
9	// //
10	// module.audio-video.real.php //
11	// module for analyzing Real Audio/Video files //
12	// dependencies: module.audio-video.riff.php //
13	// ///
14	/////////////////////////////////////////////////////////////////
15
16	getid3_lib::IncludeDependency(GETID3_INCLUDEPATH.'module.audio-video.riff.php', __FILE__, true);
17
18	class getid3_real
19	{
20
21	function getid3_real(&$fd, &$ThisFileInfo) {
22	$ThisFileInfo['fileformat'] = 'real';
23	$ThisFileInfo['bitrate'] = 0;
24	$ThisFileInfo['playtime_seconds'] = 0;
25
26	fseek($fd, $ThisFileInfo['avdataoffset'], SEEK_SET);
27	$ChunkCounter = 0;
28	while (ftell($fd) < $ThisFileInfo['avdataend']) {
29	$ChunkData = fread($fd, 8);
30	$ChunkName = substr($ChunkData, 0, 4);
31	$ChunkSize = getid3_lib::BigEndian2Int(substr($ChunkData, 4, 4));
32
33	if ($ChunkName == '.ra'."\xFD") {
34	$ChunkData .= fread($fd, $ChunkSize - 8);
35	if ($this->ParseOldRAheader(substr($ChunkData, 0, 128), $ThisFileInfo['real']['old_ra_header'])) {
36	$ThisFileInfo['audio']['dataformat'] = 'real';
37	$ThisFileInfo['audio']['lossless'] = false;
38	$ThisFileInfo['audio']['sample_rate'] = $ThisFileInfo['real']['old_ra_header']['sample_rate'];
39	$ThisFileInfo['audio']['bits_per_sample'] = $ThisFileInfo['real']['old_ra_header']['bits_per_sample'];
40	$ThisFileInfo['audio']['channels'] = $ThisFileInfo['real']['old_ra_header']['channels'];
41
42	$ThisFileInfo['playtime_seconds'] = 60 * ($ThisFileInfo['real']['old_ra_header']['audio_bytes'] / $ThisFileInfo['real']['old_ra_header']['bytes_per_minute']);
43	$ThisFileInfo['audio']['bitrate'] = 8 * ($ThisFileInfo['real']['old_ra_header']['audio_bytes'] / $ThisFileInfo['playtime_seconds']);
44	$ThisFileInfo['audio']['codec'] = $this->RealAudioCodecFourCClookup($ThisFileInfo['real']['old_ra_header']['fourcc'], $ThisFileInfo['audio']['bitrate']);
45
46	foreach ($ThisFileInfo['real']['old_ra_header']['comments'] as $key => $valuearray) {
47	if (strlen(trim($valuearray[0])) > 0) {
48	$ThisFileInfo['real']['comments'][$key][] = trim($valuearray[0]);
49	}
50	}
51	return true;
52	}
53	$ThisFileInfo['error'][] = 'There was a problem parsing this RealAudio file. Please submit it for analysis to http://www.getid3.org/upload/ or info@getid3.org';
54	unset($ThisFileInfo['bitrate']);
55	unset($ThisFileInfo['playtime_seconds']);
56	return false;
57	}
58
59	// shortcut
60	$ThisFileInfo['real']['chunks'][$ChunkCounter] = array();
61	$thisfile_real_chunks_currentchunk = &$ThisFileInfo['real']['chunks'][$ChunkCounter];
62
63	$thisfile_real_chunks_currentchunk['name'] = $ChunkName;
64	$thisfile_real_chunks_currentchunk['offset'] = ftell($fd) - 8;
65	$thisfile_real_chunks_currentchunk['length'] = $ChunkSize;
66	if (($thisfile_real_chunks_currentchunk['offset'] + $thisfile_real_chunks_currentchunk['length']) > $ThisFileInfo['avdataend']) {
67	$ThisFileInfo['warning'][] = 'Chunk "'.$thisfile_real_chunks_currentchunk['name'].'" at offset '.$thisfile_real_chunks_currentchunk['offset'].' claims to be '.$thisfile_real_chunks_currentchunk['length'].' bytes long, which is beyond end of file';
68	return false;
69	}
70
71	if ($ChunkSize > (GETID3_FREAD_BUFFER_SIZE + 8)) {
72
73	$ChunkData .= fread($fd, GETID3_FREAD_BUFFER_SIZE - 8);
74	fseek($fd, $thisfile_real_chunks_currentchunk['offset'] + $ChunkSize, SEEK_SET);
75
76	} elseif(($ChunkSize - 8) > 0) {
77
78	$ChunkData .= fread($fd, $ChunkSize - 8);
79
80	}
81	$offset = 8;
82
83	switch ($ChunkName) {
84
85	case '.RMF': // RealMedia File Header
86	$thisfile_real_chunks_currentchunk['object_version'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 2));
87	$offset += 2;
88	switch ($thisfile_real_chunks_currentchunk['object_version']) {
89
90	case 0:
91	$thisfile_real_chunks_currentchunk['file_version'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 4));
92	$offset += 4;
93	$thisfile_real_chunks_currentchunk['headers_count'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 4));
94	$offset += 4;
95	break;
96
97	default:
98	//$ThisFileInfo['warning'][] = 'Expected .RMF-object_version to be "0", actual value is "'.$thisfile_real_chunks_currentchunk['object_version'].'" (should not be a problem)';
99	break;
100
101	}
102	break;
103
104
105	case 'PROP': // Properties Header
106	$thisfile_real_chunks_currentchunk['object_version'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 2));
107	$offset += 2;
108	if ($thisfile_real_chunks_currentchunk['object_version'] == 0) {
109	$thisfile_real_chunks_currentchunk['max_bit_rate'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 4));
110	$offset += 4;
111	$thisfile_real_chunks_currentchunk['avg_bit_rate'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 4));
112	$offset += 4;
113	$thisfile_real_chunks_currentchunk['max_packet_size'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 4));
114	$offset += 4;
115	$thisfile_real_chunks_currentchunk['avg_packet_size'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 4));
116	$offset += 4;
117	$thisfile_real_chunks_currentchunk['num_packets'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 4));
118	$offset += 4;
119	$thisfile_real_chunks_currentchunk['duration'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 4));
120	$offset += 4;
121	$thisfile_real_chunks_currentchunk['preroll'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 4));
122	$offset += 4;
123	$thisfile_real_chunks_currentchunk['index_offset'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 4));
124	$offset += 4;
125	$thisfile_real_chunks_currentchunk['data_offset'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 4));
126	$offset += 4;
127	$thisfile_real_chunks_currentchunk['num_streams'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 2));
128	$offset += 2;
129	$thisfile_real_chunks_currentchunk['flags_raw'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 2));
130	$offset += 2;
131	$ThisFileInfo['playtime_seconds'] = $thisfile_real_chunks_currentchunk['duration'] / 1000;
132	if ($thisfile_real_chunks_currentchunk['duration'] > 0) {
133	$ThisFileInfo['bitrate'] += $thisfile_real_chunks_currentchunk['avg_bit_rate'];
134	}
135	$thisfile_real_chunks_currentchunk['flags']['save_enabled'] = (bool) ($thisfile_real_chunks_currentchunk['flags_raw'] & 0x0001);
136	$thisfile_real_chunks_currentchunk['flags']['perfect_play'] = (bool) ($thisfile_real_chunks_currentchunk['flags_raw'] & 0x0002);
137	$thisfile_real_chunks_currentchunk['flags']['live_broadcast'] = (bool) ($thisfile_real_chunks_currentchunk['flags_raw'] & 0x0004);
138	}
139	break;
140
141	case 'MDPR': // Media Properties Header
142	$thisfile_real_chunks_currentchunk['object_version'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 2));
143	$offset += 2;
144	if ($thisfile_real_chunks_currentchunk['object_version'] == 0) {
145	$thisfile_real_chunks_currentchunk['stream_number'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 2));
146	$offset += 2;
147	$thisfile_real_chunks_currentchunk['max_bit_rate'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 4));
148	$offset += 4;
149	$thisfile_real_chunks_currentchunk['avg_bit_rate'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 4));
150	$offset += 4;
151	$thisfile_real_chunks_currentchunk['max_packet_size'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 4));
152	$offset += 4;
153	$thisfile_real_chunks_currentchunk['avg_packet_size'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 4));
154	$offset += 4;
155	$thisfile_real_chunks_currentchunk['start_time'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 4));
156	$offset += 4;
157	$thisfile_real_chunks_currentchunk['preroll'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 4));
158	$offset += 4;
159	$thisfile_real_chunks_currentchunk['duration'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 4));
160	$offset += 4;
161	$thisfile_real_chunks_currentchunk['stream_name_size'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 1));
162	$offset += 1;
163	$thisfile_real_chunks_currentchunk['stream_name'] = substr($ChunkData, $offset, $thisfile_real_chunks_currentchunk['stream_name_size']);
164	$offset += $thisfile_real_chunks_currentchunk['stream_name_size'];
165	$thisfile_real_chunks_currentchunk['mime_type_size'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 1));
166	$offset += 1;
167	$thisfile_real_chunks_currentchunk['mime_type'] = substr($ChunkData, $offset, $thisfile_real_chunks_currentchunk['mime_type_size']);
168	$offset += $thisfile_real_chunks_currentchunk['mime_type_size'];
169	$thisfile_real_chunks_currentchunk['type_specific_len'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 4));
170	$offset += 4;
171	$thisfile_real_chunks_currentchunk['type_specific_data'] = substr($ChunkData, $offset, $thisfile_real_chunks_currentchunk['type_specific_len']);
172	$offset += $thisfile_real_chunks_currentchunk['type_specific_len'];
173
174	// shortcut
175	$thisfile_real_chunks_currentchunk_typespecificdata = &$thisfile_real_chunks_currentchunk['type_specific_data'];
176
177	switch ($thisfile_real_chunks_currentchunk['mime_type']) {
178	case 'video/x-pn-realvideo':
179	case 'video/x-pn-multirate-realvideo':
180	// http://www.freelists.org/archives/matroska-devel/07-2003/msg00010.html
181
182	// shortcut
183	$thisfile_real_chunks_currentchunk['video_info'] = array();
184	$thisfile_real_chunks_currentchunk_videoinfo = &$thisfile_real_chunks_currentchunk['video_info'];
185
186	$thisfile_real_chunks_currentchunk_videoinfo['dwSize'] = getid3_lib::BigEndian2Int(substr($thisfile_real_chunks_currentchunk_typespecificdata, 0, 4));
187	$thisfile_real_chunks_currentchunk_videoinfo['fourcc1'] = substr($thisfile_real_chunks_currentchunk_typespecificdata, 4, 4);
188	$thisfile_real_chunks_currentchunk_videoinfo['fourcc2'] = substr($thisfile_real_chunks_currentchunk_typespecificdata, 8, 4);
189	$thisfile_real_chunks_currentchunk_videoinfo['width'] = getid3_lib::BigEndian2Int(substr($thisfile_real_chunks_currentchunk_typespecificdata, 12, 2));
190	$thisfile_real_chunks_currentchunk_videoinfo['height'] = getid3_lib::BigEndian2Int(substr($thisfile_real_chunks_currentchunk_typespecificdata, 14, 2));
191	$thisfile_real_chunks_currentchunk_videoinfo['bits_per_sample'] = getid3_lib::BigEndian2Int(substr($thisfile_real_chunks_currentchunk_typespecificdata, 16, 2));
192	//$thisfile_real_chunks_currentchunk_videoinfo['unknown1'] = getid3_lib::BigEndian2Int(substr($thisfile_real_chunks_currentchunk_typespecificdata, 18, 2));
193	//$thisfile_real_chunks_currentchunk_videoinfo['unknown2'] = getid3_lib::BigEndian2Int(substr($thisfile_real_chunks_currentchunk_typespecificdata, 20, 2));
194	$thisfile_real_chunks_currentchunk_videoinfo['frames_per_second'] = getid3_lib::BigEndian2Int(substr($thisfile_real_chunks_currentchunk_typespecificdata, 22, 2));
195	//$thisfile_real_chunks_currentchunk_videoinfo['unknown3'] = getid3_lib::BigEndian2Int(substr($thisfile_real_chunks_currentchunk_typespecificdata, 24, 2));
196	//$thisfile_real_chunks_currentchunk_videoinfo['unknown4'] = getid3_lib::BigEndian2Int(substr($thisfile_real_chunks_currentchunk_typespecificdata, 26, 2));
197	//$thisfile_real_chunks_currentchunk_videoinfo['unknown5'] = getid3_lib::BigEndian2Int(substr($thisfile_real_chunks_currentchunk_typespecificdata, 28, 2));
198	//$thisfile_real_chunks_currentchunk_videoinfo['unknown6'] = getid3_lib::BigEndian2Int(substr($thisfile_real_chunks_currentchunk_typespecificdata, 30, 2));
199	//$thisfile_real_chunks_currentchunk_videoinfo['unknown7'] = getid3_lib::BigEndian2Int(substr($thisfile_real_chunks_currentchunk_typespecificdata, 32, 2));
200	//$thisfile_real_chunks_currentchunk_videoinfo['unknown8'] = getid3_lib::BigEndian2Int(substr($thisfile_real_chunks_currentchunk_typespecificdata, 34, 2));
201	//$thisfile_real_chunks_currentchunk_videoinfo['unknown9'] = getid3_lib::BigEndian2Int(substr($thisfile_real_chunks_currentchunk_typespecificdata, 36, 2));
202
203	$thisfile_real_chunks_currentchunk_videoinfo['codec'] = getid3_riff::RIFFfourccLookup($thisfile_real_chunks_currentchunk_videoinfo['fourcc2']);
204
205	$ThisFileInfo['video']['resolution_x'] = $thisfile_real_chunks_currentchunk_videoinfo['width'];
206	$ThisFileInfo['video']['resolution_y'] = $thisfile_real_chunks_currentchunk_videoinfo['height'];
207	$ThisFileInfo['video']['frame_rate'] = (float) $thisfile_real_chunks_currentchunk_videoinfo['frames_per_second'];
208	$ThisFileInfo['video']['codec'] = $thisfile_real_chunks_currentchunk_videoinfo['codec'];
209	$ThisFileInfo['video']['bits_per_sample'] = $thisfile_real_chunks_currentchunk_videoinfo['bits_per_sample'];
210	break;
211
212	case 'audio/x-pn-realaudio':
213	case 'audio/x-pn-multirate-realaudio':
214	$this->ParseOldRAheader($thisfile_real_chunks_currentchunk_typespecificdata, $thisfile_real_chunks_currentchunk['parsed_audio_data']);
215
216	$ThisFileInfo['audio']['sample_rate'] = $thisfile_real_chunks_currentchunk['parsed_audio_data']['sample_rate'];
217	$ThisFileInfo['audio']['bits_per_sample'] = $thisfile_real_chunks_currentchunk['parsed_audio_data']['bits_per_sample'];
218	$ThisFileInfo['audio']['channels'] = $thisfile_real_chunks_currentchunk['parsed_audio_data']['channels'];
219	if (!empty($ThisFileInfo['audio']['dataformat'])) {
220	foreach ($ThisFileInfo['audio'] as $key => $value) {
221	if ($key != 'streams') {
222	$ThisFileInfo['audio']['streams'][$thisfile_real_chunks_currentchunk['stream_number']][$key] = $value;
223	}
224	}
225	}
226	break;
227
228	case 'logical-fileinfo':
229	// shortcut
230	$thisfile_real_chunks_currentchunk['logical_fileinfo'] = array();
231	$thisfile_real_chunks_currentchunk_logicalfileinfo = &$thisfile_real_chunks_currentchunk['logical_fileinfo'];
232
233	$thisfile_real_chunks_currentchunk_logicalfileinfo_offset = 0;
234	$thisfile_real_chunks_currentchunk_logicalfileinfo['logical_fileinfo_length'] = getid3_lib::BigEndian2Int(substr($thisfile_real_chunks_currentchunk_typespecificdata, $thisfile_real_chunks_currentchunk_logicalfileinfo_offset, 4));
235	$thisfile_real_chunks_currentchunk_logicalfileinfo_offset += 4;
236
237	//$thisfile_real_chunks_currentchunk_logicalfileinfo['unknown1'] = getid3_lib::BigEndian2Int(substr($thisfile_real_chunks_currentchunk_typespecificdata, $thisfile_real_chunks_currentchunk_logicalfileinfo_offset, 4));
238	$thisfile_real_chunks_currentchunk_logicalfileinfo_offset += 4;
239
240	$thisfile_real_chunks_currentchunk_logicalfileinfo['num_tags'] = getid3_lib::BigEndian2Int(substr($thisfile_real_chunks_currentchunk_typespecificdata, $thisfile_real_chunks_currentchunk_logicalfileinfo_offset, 4));
241	$thisfile_real_chunks_currentchunk_logicalfileinfo_offset += 4;
242
243	//$thisfile_real_chunks_currentchunk_logicalfileinfo['unknown2'] = getid3_lib::BigEndian2Int(substr($thisfile_real_chunks_currentchunk_typespecificdata, $thisfile_real_chunks_currentchunk_logicalfileinfo_offset, 4));
244	$thisfile_real_chunks_currentchunk_logicalfileinfo_offset += 4;
245
246	//$thisfile_real_chunks_currentchunk_logicalfileinfo['d'] = getid3_lib::BigEndian2Int(substr($thisfile_real_chunks_currentchunk_typespecificdata, $thisfile_real_chunks_currentchunk_logicalfileinfo_offset, 1));
247
248	//$thisfile_real_chunks_currentchunk_logicalfileinfo['one_type'] = getid3_lib::BigEndian2Int(substr($thisfile_real_chunks_currentchunk_typespecificdata, $thisfile_real_chunks_currentchunk_logicalfileinfo_offset, 4));
249	//$thisfile_real_chunks_currentchunk_logicalfileinfo_thislength = getid3_lib::BigEndian2Int(substr($thisfile_real_chunks_currentchunk_typespecificdata, 4 + $thisfile_real_chunks_currentchunk_logicalfileinfo_offset, 2));
250	//$thisfile_real_chunks_currentchunk_logicalfileinfo['one'] = substr($thisfile_real_chunks_currentchunk_typespecificdata, 6 + $thisfile_real_chunks_currentchunk_logicalfileinfo_offset, $thisfile_real_chunks_currentchunk_logicalfileinfo_thislength);
251	//$thisfile_real_chunks_currentchunk_logicalfileinfo_offset += (6 + $thisfile_real_chunks_currentchunk_logicalfileinfo_thislength);
252
253	break;
254
255	}
256
257
258	if (empty($ThisFileInfo['playtime_seconds'])) {
259	$ThisFileInfo['playtime_seconds'] = max($ThisFileInfo['playtime_seconds'], ($thisfile_real_chunks_currentchunk['duration'] + $thisfile_real_chunks_currentchunk['start_time']) / 1000);
260	}
261	if ($thisfile_real_chunks_currentchunk['duration'] > 0) {
262	switch ($thisfile_real_chunks_currentchunk['mime_type']) {
263	case 'audio/x-pn-realaudio':
264	case 'audio/x-pn-multirate-realaudio':
265	$ThisFileInfo['audio']['bitrate'] = (isset($ThisFileInfo['audio']['bitrate']) ? $ThisFileInfo['audio']['bitrate'] : 0) + $thisfile_real_chunks_currentchunk['avg_bit_rate'];
266	$ThisFileInfo['audio']['codec'] = $this->RealAudioCodecFourCClookup($thisfile_real_chunks_currentchunk['parsed_audio_data']['fourcc'], $ThisFileInfo['audio']['bitrate']);
267	$ThisFileInfo['audio']['dataformat'] = 'real';
268	$ThisFileInfo['audio']['lossless'] = false;
269	break;
270
271	case 'video/x-pn-realvideo':
272	case 'video/x-pn-multirate-realvideo':
273	$ThisFileInfo['video']['bitrate'] = (isset($ThisFileInfo['video']['bitrate']) ? $ThisFileInfo['video']['bitrate'] : 0) + $thisfile_real_chunks_currentchunk['avg_bit_rate'];
274	$ThisFileInfo['video']['bitrate_mode'] = 'cbr';
275	$ThisFileInfo['video']['dataformat'] = 'real';
276	$ThisFileInfo['video']['lossless'] = false;
277	$ThisFileInfo['video']['pixel_aspect_ratio'] = (float) 1;
278	break;
279
280	case 'audio/x-ralf-mpeg4-generic':
281	$ThisFileInfo['audio']['bitrate'] = (isset($ThisFileInfo['audio']['bitrate']) ? $ThisFileInfo['audio']['bitrate'] : 0) + $thisfile_real_chunks_currentchunk['avg_bit_rate'];
282	$ThisFileInfo['audio']['codec'] = 'RealAudio Lossless';
283	$ThisFileInfo['audio']['dataformat'] = 'real';
284	$ThisFileInfo['audio']['lossless'] = true;
285	break;
286	}
287	$ThisFileInfo['bitrate'] = (isset($ThisFileInfo['video']['bitrate']) ? $ThisFileInfo['video']['bitrate'] : 0) + (isset($ThisFileInfo['audio']['bitrate']) ? $ThisFileInfo['audio']['bitrate'] : 0);
288	}
289	}
290	break;
291
292	case 'CONT': // Content Description Header (text comments)
293	$thisfile_real_chunks_currentchunk['object_version'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 2));
294	$offset += 2;
295	if ($thisfile_real_chunks_currentchunk['object_version'] == 0) {
296	$thisfile_real_chunks_currentchunk['title_len'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 2));
297	$offset += 2;
298	$thisfile_real_chunks_currentchunk['title'] = (string) substr($ChunkData, $offset, $thisfile_real_chunks_currentchunk['title_len']);
299	$offset += $thisfile_real_chunks_currentchunk['title_len'];
300
301	$thisfile_real_chunks_currentchunk['artist_len'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 2));
302	$offset += 2;
303	$thisfile_real_chunks_currentchunk['artist'] = (string) substr($ChunkData, $offset, $thisfile_real_chunks_currentchunk['artist_len']);
304	$offset += $thisfile_real_chunks_currentchunk['artist_len'];
305
306	$thisfile_real_chunks_currentchunk['copyright_len'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 2));
307	$offset += 2;
308	$thisfile_real_chunks_currentchunk['copyright'] = (string) substr($ChunkData, $offset, $thisfile_real_chunks_currentchunk['copyright_len']);
309	$offset += $thisfile_real_chunks_currentchunk['copyright_len'];
310
311	$thisfile_real_chunks_currentchunk['comment_len'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 2));
312	$offset += 2;
313	$thisfile_real_chunks_currentchunk['comment'] = (string) substr($ChunkData, $offset, $thisfile_real_chunks_currentchunk['comment_len']);
314	$offset += $thisfile_real_chunks_currentchunk['comment_len'];
315
316
317	$commentkeystocopy = array('title'=>'title', 'artist'=>'artist', 'copyright'=>'copyright', 'comment'=>'comment');
318	foreach ($commentkeystocopy as $key => $val) {
319	if ($thisfile_real_chunks_currentchunk[$key]) {
320	$ThisFileInfo['real']['comments'][$val][] = trim($thisfile_real_chunks_currentchunk[$key]);
321	}
322	}
323
324	}
325	break;
326
327
328	case 'DATA': // Data Chunk Header
329	// do nothing
330	break;
331
332	case 'INDX': // Index Section Header
333	$thisfile_real_chunks_currentchunk['object_version'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 2));
334	$offset += 2;
335	if ($thisfile_real_chunks_currentchunk['object_version'] == 0) {
336	$thisfile_real_chunks_currentchunk['num_indices'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 4));
337	$offset += 4;
338	$thisfile_real_chunks_currentchunk['stream_number'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 2));
339	$offset += 2;
340	$thisfile_real_chunks_currentchunk['next_index_header'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 4));
341	$offset += 4;
342
343	if ($thisfile_real_chunks_currentchunk['next_index_header'] == 0) {
344	// last index chunk found, ignore rest of file
345	break 2;
346	} else {
347	// non-last index chunk, seek to next index chunk (skipping actual index data)
348	fseek($fd, $thisfile_real_chunks_currentchunk['next_index_header'], SEEK_SET);
349	}
350	}
351	break;
352
353	default:
354	$ThisFileInfo['warning'][] = 'Unhandled RealMedia chunk "'.$ChunkName.'" at offset '.$thisfile_real_chunks_currentchunk['offset'];
355	break;
356	}
357	$ChunkCounter++;
358	}
359
360	if (!empty($ThisFileInfo['audio']['streams'])) {
361	$ThisFileInfo['audio']['bitrate'] = 0;
362	foreach ($ThisFileInfo['audio']['streams'] as $key => $valuearray) {
363	$ThisFileInfo['audio']['bitrate'] += $valuearray['bitrate'];
364	}
365	}
366
367	return true;
368	}
369
370
371	function ParseOldRAheader($OldRAheaderData, &$ParsedArray) {
372	// http://www.freelists.org/archives/matroska-devel/07-2003/msg00010.html
373
374	$ParsedArray = array();
375	$ParsedArray['magic'] = substr($OldRAheaderData, 0, 4);
376	if ($ParsedArray['magic'] != '.ra'."\xFD") {
377	return false;
378	}
379	$ParsedArray['version1'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 4, 2));
380
381	if ($ParsedArray['version1'] < 3) {
382
383	return false;
384
385	} elseif ($ParsedArray['version1'] == 3) {
386
387	$ParsedArray['fourcc1'] = '.ra3';
388	$ParsedArray['bits_per_sample'] = 16; // hard-coded for old versions?
389	$ParsedArray['sample_rate'] = 8000; // hard-coded for old versions?
390
391	$ParsedArray['header_size'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 6, 2));
392	$ParsedArray['channels'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 8, 2)); // always 1 (?)
393	//$ParsedArray['unknown1'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 10, 2));
394	//$ParsedArray['unknown2'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 12, 2));
395	//$ParsedArray['unknown3'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 14, 2));
396	$ParsedArray['bytes_per_minute'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 16, 2));
397	$ParsedArray['audio_bytes'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 18, 4));
398	$ParsedArray['comments_raw'] = substr($OldRAheaderData, 22, $ParsedArray['header_size'] - 22 + 1); // not including null terminator
399
400	$commentoffset = 0;
401	$commentlength = getid3_lib::BigEndian2Int(substr($ParsedArray['comments_raw'], $commentoffset++, 1));
402	$ParsedArray['comments']['title'][] = substr($ParsedArray['comments_raw'], $commentoffset, $commentlength);
403	$commentoffset += $commentlength;
404
405	$commentlength = getid3_lib::BigEndian2Int(substr($ParsedArray['comments_raw'], $commentoffset++, 1));
406	$ParsedArray['comments']['artist'][] = substr($ParsedArray['comments_raw'], $commentoffset, $commentlength);
407	$commentoffset += $commentlength;
408
409	$commentlength = getid3_lib::BigEndian2Int(substr($ParsedArray['comments_raw'], $commentoffset++, 1));
410	$ParsedArray['comments']['copyright'][] = substr($ParsedArray['comments_raw'], $commentoffset, $commentlength);
411	$commentoffset += $commentlength;
412
413	$commentoffset++; // final null terminator (?)
414	$commentoffset++; // fourcc length (?) should be 4
415	$ParsedArray['fourcc'] = substr($OldRAheaderData, 23 + $commentoffset, 4);
416
417	} elseif ($ParsedArray['version1'] <= 5) {
418
419	//$ParsedArray['unknown1'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 6, 2));
420	$ParsedArray['fourcc1'] = substr($OldRAheaderData, 8, 4);
421	$ParsedArray['file_size'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 12, 4));
422	$ParsedArray['version2'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 16, 2));
423	$ParsedArray['header_size'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 18, 4));
424	$ParsedArray['codec_flavor_id'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 22, 2));
425	$ParsedArray['coded_frame_size'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 24, 4));
426	$ParsedArray['audio_bytes'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 28, 4));
427	$ParsedArray['bytes_per_minute'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 32, 4));
428	//$ParsedArray['unknown5'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 36, 4));
429	$ParsedArray['sub_packet_h'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 40, 2));
430	$ParsedArray['frame_size'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 42, 2));
431	$ParsedArray['sub_packet_size'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 44, 2));
432	//$ParsedArray['unknown6'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 46, 2));
433
434	switch ($ParsedArray['version1']) {
435
436	case 4:
437	$ParsedArray['sample_rate'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 48, 2));
438	//$ParsedArray['unknown8'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 50, 2));
439	$ParsedArray['bits_per_sample'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 52, 2));
440	$ParsedArray['channels'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 54, 2));
441	$ParsedArray['length_fourcc2'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 56, 1));
442	$ParsedArray['fourcc2'] = substr($OldRAheaderData, 57, 4);
443	$ParsedArray['length_fourcc3'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 61, 1));
444	$ParsedArray['fourcc3'] = substr($OldRAheaderData, 62, 4);
445	//$ParsedArray['unknown9'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 66, 1));
446	//$ParsedArray['unknown10'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 67, 2));
447	$ParsedArray['comments_raw'] = substr($OldRAheaderData, 69, $ParsedArray['header_size'] - 69 + 16);
448
449	$commentoffset = 0;
450	$commentlength = getid3_lib::BigEndian2Int(substr($ParsedArray['comments_raw'], $commentoffset++, 1));
451	$ParsedArray['comments']['title'][] = substr($ParsedArray['comments_raw'], $commentoffset, $commentlength);
452	$commentoffset += $commentlength;
453
454	$commentlength = getid3_lib::BigEndian2Int(substr($ParsedArray['comments_raw'], $commentoffset++, 1));
455	$ParsedArray['comments']['artist'][] = substr($ParsedArray['comments_raw'], $commentoffset, $commentlength);
456	$commentoffset += $commentlength;
457
458	$commentlength = getid3_lib::BigEndian2Int(substr($ParsedArray['comments_raw'], $commentoffset++, 1));
459	$ParsedArray['comments']['copyright'][] = substr($ParsedArray['comments_raw'], $commentoffset, $commentlength);
460	$commentoffset += $commentlength;
461	break;
462
463	case 5:
464	$ParsedArray['sample_rate'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 48, 4));
465	$ParsedArray['sample_rate2'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 52, 4));
466	$ParsedArray['bits_per_sample'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 56, 4));
467	$ParsedArray['channels'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 60, 2));
468	$ParsedArray['genr'] = substr($OldRAheaderData, 62, 4);
469	$ParsedArray['fourcc3'] = substr($OldRAheaderData, 66, 4);
470	$ParsedArray['comments'] = array();
471	break;
472	}
473	$ParsedArray['fourcc'] = $ParsedArray['fourcc3'];
474
475	}
476	foreach ($ParsedArray['comments'] as $key => $value) {
477	if ($ParsedArray['comments'][$key][0] === false) {
478	$ParsedArray['comments'][$key][0] = '';
479	}
480	}
481
482	return true;
483	}
484
485	function RealAudioCodecFourCClookup($fourcc, $bitrate) {
486	static $RealAudioCodecFourCClookup = array();
487	if (empty($RealAudioCodecFourCClookup)) {
488	// http://www.its.msstate.edu/net/real/reports/config/tags.stats
489	// http://www.freelists.org/archives/matroska-devel/06-2003/fullthread18.html
490
491	$RealAudioCodecFourCClookup['14_4'][8000] = 'RealAudio v2 (14.4kbps)';
492	$RealAudioCodecFourCClookup['14.4'][8000] = 'RealAudio v2 (14.4kbps)';
493	$RealAudioCodecFourCClookup['lpcJ'][8000] = 'RealAudio v2 (14.4kbps)';
494	$RealAudioCodecFourCClookup['28_8'][15200] = 'RealAudio v2 (28.8kbps)';
495	$RealAudioCodecFourCClookup['28.8'][15200] = 'RealAudio v2 (28.8kbps)';
496	$RealAudioCodecFourCClookup['sipr'][4933] = 'RealAudio v4 (5kbps Voice)';
497	$RealAudioCodecFourCClookup['sipr'][6444] = 'RealAudio v4 (6.5kbps Voice)';
498	$RealAudioCodecFourCClookup['sipr'][8444] = 'RealAudio v4 (8.5kbps Voice)';
499	$RealAudioCodecFourCClookup['sipr'][16000] = 'RealAudio v4 (16kbps Wideband)';
500	$RealAudioCodecFourCClookup['dnet'][8000] = 'RealAudio v3 (8kbps Music)';
501	$RealAudioCodecFourCClookup['dnet'][16000] = 'RealAudio v3 (16kbps Music Low Response)';
502	$RealAudioCodecFourCClookup['dnet'][15963] = 'RealAudio v3 (16kbps Music Mid/High Response)';
503	$RealAudioCodecFourCClookup['dnet'][20000] = 'RealAudio v3 (20kbps Music Stereo)';
504	$RealAudioCodecFourCClookup['dnet'][32000] = 'RealAudio v3 (32kbps Music Mono)';
505	$RealAudioCodecFourCClookup['dnet'][31951] = 'RealAudio v3 (32kbps Music Stereo)';
506	$RealAudioCodecFourCClookup['dnet'][39965] = 'RealAudio v3 (40kbps Music Mono)';
507	$RealAudioCodecFourCClookup['dnet'][40000] = 'RealAudio v3 (40kbps Music Stereo)';
508	$RealAudioCodecFourCClookup['dnet'][79947] = 'RealAudio v3 (80kbps Music Mono)';
509	$RealAudioCodecFourCClookup['dnet'][80000] = 'RealAudio v3 (80kbps Music Stereo)';
510
511	$RealAudioCodecFourCClookup['dnet'][0] = 'RealAudio v3';
512	$RealAudioCodecFourCClookup['sipr'][0] = 'RealAudio v4';
513	$RealAudioCodecFourCClookup['cook'][0] = 'RealAudio G2';
514	$RealAudioCodecFourCClookup['atrc'][0] = 'RealAudio 8';
515	}
516	$roundbitrate = intval(round($bitrate));
517	if (isset($RealAudioCodecFourCClookup[$fourcc][$roundbitrate])) {
518	return $RealAudioCodecFourCClookup[$fourcc][$roundbitrate];
519	} elseif (isset($RealAudioCodecFourCClookup[$fourcc][0])) {
520	return $RealAudioCodecFourCClookup[$fourcc][0];
521	}
522	return $fourcc;
523	}
524
525	}
526
527
528	?>

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source: extensions/charlies_content/getid3/getid3/module.audio-video.real.php @ 3544

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