21 {
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);
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
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
72
74 fseek($fd, $thisfile_real_chunks_currentchunk[
'offset'] + $ChunkSize, SEEK_SET);
75
76 } else {
77
78 $ChunkData .=
fread($fd, $ChunkSize - 8);
79
80 }
81 $offset = 8;
82
83 switch ($ChunkName) {
84
85 case '.RMF':
87 $offset += 2;
88 switch ($thisfile_real_chunks_currentchunk['object_version']) {
89
90 case 0:
92 $offset += 4;
94 $offset += 4;
95 break;
96
97 default:
98
99 break;
100
101 }
102 break;
103
104
105 case 'PROP':
107 $offset += 2;
108 if ($thisfile_real_chunks_currentchunk['object_version'] == 0) {
110 $offset += 4;
112 $offset += 4;
114 $offset += 4;
116 $offset += 4;
118 $offset += 4;
120 $offset += 4;
122 $offset += 4;
124 $offset += 4;
126 $offset += 4;
128 $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':
143 $offset += 2;
144 if ($thisfile_real_chunks_currentchunk['object_version'] == 0) {
146 $offset += 2;
148 $offset += 4;
150 $offset += 4;
152 $offset += 4;
154 $offset += 4;
156 $offset += 4;
158 $offset += 4;
160 $offset += 4;
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'];
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'];
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
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
181
182
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
193
194 $thisfile_real_chunks_currentchunk_videoinfo[
'frames_per_second'] =
getid3_lib::BigEndian2Int(substr($thisfile_real_chunks_currentchunk_typespecificdata, 22, 2));
195
196
197
198
199
200
201
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
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
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
244 $thisfile_real_chunks_currentchunk_logicalfileinfo_offset += 4;
245
246
247
248
249
250
251
252
253 break;
254
255 }
256
257
258 if (empty($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':
294 $offset += 2;
295 if ($thisfile_real_chunks_currentchunk['object_version'] == 0) {
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
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
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
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':
329
330 break;
331
332 case 'INDX':
334 $offset += 2;
335 if ($thisfile_real_chunks_currentchunk['object_version'] == 0) {
337 $offset += 4;
339 $offset += 2;
341 $offset += 4;
342
343 if ($thisfile_real_chunks_currentchunk['next_index_header'] == 0) {
344
345 break 2;
346 } else {
347
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'] += $valuearray['bitrate'];
364 }
365 }
366
367 return true;
368 }
RIFFfourccLookup($fourcc)
const GETID3_FREAD_BUFFER_SIZE