| author | ymh <ymh.work@gmail.com> |
| Mon, 14 Oct 2019 17:39:30 +0200 | |
| changeset 7 | cf61fcea0001 |
| parent 5 | 5e2f62d02dcd |
| child 16 | a86126ab1dd4 |
| permissions | -rw-r--r-- |
| 0 | 1 |
<?php |
2 |
///////////////////////////////////////////////////////////////// |
|
3 |
/// getID3() by James Heinrich <info@getid3.org> // |
|
4 |
// available at http://getid3.sourceforge.net // |
|
5 |
// or http://www.getid3.org // |
|
| 5 | 6 |
// also https://github.com/JamesHeinrich/getID3 // |
| 0 | 7 |
///////////////////////////////////////////////////////////////// |
8 |
// See readme.txt for more details // |
|
9 |
///////////////////////////////////////////////////////////////// |
|
10 |
// // |
|
11 |
// module.audio.flac.php // |
|
12 |
// module for analyzing FLAC and OggFLAC audio files // |
|
13 |
// dependencies: module.audio.ogg.php // |
|
14 |
// /// |
|
15 |
///////////////////////////////////////////////////////////////// |
|
16 |
||
17 |
||
18 |
getid3_lib::IncludeDependency(GETID3_INCLUDEPATH.'module.audio.ogg.php', __FILE__, true); |
|
19 |
||
20 |
/** |
|
21 |
* @tutorial http://flac.sourceforge.net/format.html |
|
22 |
*/ |
|
23 |
class getid3_flac extends getid3_handler |
|
24 |
{ |
|
25 |
const syncword = 'fLaC'; |
|
26 |
||
27 |
public function Analyze() { |
|
28 |
$info = &$this->getid3->info; |
|
29 |
||
30 |
$this->fseek($info['avdataoffset']); |
|
31 |
$StreamMarker = $this->fread(4); |
|
32 |
if ($StreamMarker != self::syncword) { |
|
33 |
return $this->error('Expecting "'.getid3_lib::PrintHexBytes(self::syncword).'" at offset '.$info['avdataoffset'].', found "'.getid3_lib::PrintHexBytes($StreamMarker).'"'); |
|
34 |
} |
|
35 |
$info['fileformat'] = 'flac'; |
|
36 |
$info['audio']['dataformat'] = 'flac'; |
|
37 |
$info['audio']['bitrate_mode'] = 'vbr'; |
|
38 |
$info['audio']['lossless'] = true; |
|
39 |
||
40 |
// parse flac container |
|
41 |
return $this->parseMETAdata(); |
|
42 |
} |
|
43 |
||
44 |
public function parseMETAdata() { |
|
45 |
$info = &$this->getid3->info; |
|
46 |
do { |
|
47 |
$BlockOffset = $this->ftell(); |
|
48 |
$BlockHeader = $this->fread(4); |
|
49 |
$LBFBT = getid3_lib::BigEndian2Int(substr($BlockHeader, 0, 1)); |
|
50 |
$LastBlockFlag = (bool) ($LBFBT & 0x80); |
|
51 |
$BlockType = ($LBFBT & 0x7F); |
|
52 |
$BlockLength = getid3_lib::BigEndian2Int(substr($BlockHeader, 1, 3)); |
|
53 |
$BlockTypeText = self::metaBlockTypeLookup($BlockType); |
|
54 |
||
55 |
if (($BlockOffset + 4 + $BlockLength) > $info['avdataend']) { |
|
56 |
$this->error('METADATA_BLOCK_HEADER.BLOCK_TYPE ('.$BlockTypeText.') at offset '.$BlockOffset.' extends beyond end of file'); |
|
57 |
break; |
|
58 |
} |
|
59 |
if ($BlockLength < 1) { |
|
60 |
$this->error('METADATA_BLOCK_HEADER.BLOCK_LENGTH ('.$BlockLength.') at offset '.$BlockOffset.' is invalid'); |
|
61 |
break; |
|
62 |
} |
|
63 |
||
64 |
$info['flac'][$BlockTypeText]['raw'] = array(); |
|
65 |
$BlockTypeText_raw = &$info['flac'][$BlockTypeText]['raw']; |
|
66 |
||
67 |
$BlockTypeText_raw['offset'] = $BlockOffset; |
|
68 |
$BlockTypeText_raw['last_meta_block'] = $LastBlockFlag; |
|
69 |
$BlockTypeText_raw['block_type'] = $BlockType; |
|
70 |
$BlockTypeText_raw['block_type_text'] = $BlockTypeText; |
|
71 |
$BlockTypeText_raw['block_length'] = $BlockLength; |
|
72 |
if ($BlockTypeText_raw['block_type'] != 0x06) { // do not read attachment data automatically |
|
73 |
$BlockTypeText_raw['block_data'] = $this->fread($BlockLength); |
|
74 |
} |
|
75 |
||
76 |
switch ($BlockTypeText) { |
|
77 |
case 'STREAMINFO': // 0x00 |
|
78 |
if (!$this->parseSTREAMINFO($BlockTypeText_raw['block_data'])) { |
|
79 |
return false; |
|
80 |
} |
|
81 |
break; |
|
82 |
||
83 |
case 'PADDING': // 0x01 |
|
84 |
unset($info['flac']['PADDING']); // ignore |
|
85 |
break; |
|
86 |
||
87 |
case 'APPLICATION': // 0x02 |
|
88 |
if (!$this->parseAPPLICATION($BlockTypeText_raw['block_data'])) { |
|
89 |
return false; |
|
90 |
} |
|
91 |
break; |
|
92 |
||
93 |
case 'SEEKTABLE': // 0x03 |
|
94 |
if (!$this->parseSEEKTABLE($BlockTypeText_raw['block_data'])) { |
|
95 |
return false; |
|
96 |
} |
|
97 |
break; |
|
98 |
||
99 |
case 'VORBIS_COMMENT': // 0x04 |
|
100 |
if (!$this->parseVORBIS_COMMENT($BlockTypeText_raw['block_data'])) { |
|
101 |
return false; |
|
102 |
} |
|
103 |
break; |
|
104 |
||
105 |
case 'CUESHEET': // 0x05 |
|
106 |
if (!$this->parseCUESHEET($BlockTypeText_raw['block_data'])) { |
|
107 |
return false; |
|
108 |
} |
|
109 |
break; |
|
110 |
||
111 |
case 'PICTURE': // 0x06 |
|
112 |
if (!$this->parsePICTURE()) { |
|
113 |
return false; |
|
114 |
} |
|
115 |
break; |
|
116 |
||
117 |
default: |
|
118 |
$this->warning('Unhandled METADATA_BLOCK_HEADER.BLOCK_TYPE ('.$BlockType.') at offset '.$BlockOffset); |
|
119 |
} |
|
120 |
||
121 |
unset($info['flac'][$BlockTypeText]['raw']); |
|
122 |
$info['avdataoffset'] = $this->ftell(); |
|
123 |
} |
|
124 |
while ($LastBlockFlag === false); |
|
125 |
||
126 |
// handle tags |
|
127 |
if (!empty($info['flac']['VORBIS_COMMENT']['comments'])) { |
|
128 |
$info['flac']['comments'] = $info['flac']['VORBIS_COMMENT']['comments']; |
|
129 |
} |
|
130 |
if (!empty($info['flac']['VORBIS_COMMENT']['vendor'])) { |
|
131 |
$info['audio']['encoder'] = str_replace('reference ', '', $info['flac']['VORBIS_COMMENT']['vendor']); |
|
132 |
} |
|
133 |
||
134 |
// copy attachments to 'comments' array if nesesary |
|
135 |
if (isset($info['flac']['PICTURE']) && ($this->getid3->option_save_attachments !== getID3::ATTACHMENTS_NONE)) { |
|
136 |
foreach ($info['flac']['PICTURE'] as $entry) { |
|
137 |
if (!empty($entry['data'])) { |
|
|
7
cf61fcea0001
resynchronize code repo with production
ymh <ymh.work@gmail.com>
parents:
5
diff
changeset
|
138 |
if (!isset($info['flac']['comments']['picture'])) { |
|
cf61fcea0001
resynchronize code repo with production
ymh <ymh.work@gmail.com>
parents:
5
diff
changeset
|
139 |
$info['flac']['comments']['picture'] = array(); |
|
cf61fcea0001
resynchronize code repo with production
ymh <ymh.work@gmail.com>
parents:
5
diff
changeset
|
140 |
} |
|
cf61fcea0001
resynchronize code repo with production
ymh <ymh.work@gmail.com>
parents:
5
diff
changeset
|
141 |
$comments_picture_data = array(); |
|
cf61fcea0001
resynchronize code repo with production
ymh <ymh.work@gmail.com>
parents:
5
diff
changeset
|
142 |
foreach (array('data', 'image_mime', 'image_width', 'image_height', 'imagetype', 'picturetype', 'description', 'datalength') as $picture_key) { |
|
cf61fcea0001
resynchronize code repo with production
ymh <ymh.work@gmail.com>
parents:
5
diff
changeset
|
143 |
if (isset($entry[$picture_key])) { |
|
cf61fcea0001
resynchronize code repo with production
ymh <ymh.work@gmail.com>
parents:
5
diff
changeset
|
144 |
$comments_picture_data[$picture_key] = $entry[$picture_key]; |
|
cf61fcea0001
resynchronize code repo with production
ymh <ymh.work@gmail.com>
parents:
5
diff
changeset
|
145 |
} |
|
cf61fcea0001
resynchronize code repo with production
ymh <ymh.work@gmail.com>
parents:
5
diff
changeset
|
146 |
} |
|
cf61fcea0001
resynchronize code repo with production
ymh <ymh.work@gmail.com>
parents:
5
diff
changeset
|
147 |
$info['flac']['comments']['picture'][] = $comments_picture_data; |
|
cf61fcea0001
resynchronize code repo with production
ymh <ymh.work@gmail.com>
parents:
5
diff
changeset
|
148 |
unset($comments_picture_data); |
| 0 | 149 |
} |
150 |
} |
|
151 |
} |
|
152 |
||
153 |
if (isset($info['flac']['STREAMINFO'])) { |
|
154 |
if (!$this->isDependencyFor('matroska')) { |
|
155 |
$info['flac']['compressed_audio_bytes'] = $info['avdataend'] - $info['avdataoffset']; |
|
156 |
} |
|
157 |
$info['flac']['uncompressed_audio_bytes'] = $info['flac']['STREAMINFO']['samples_stream'] * $info['flac']['STREAMINFO']['channels'] * ($info['flac']['STREAMINFO']['bits_per_sample'] / 8); |
|
158 |
if ($info['flac']['uncompressed_audio_bytes'] == 0) { |
|
159 |
return $this->error('Corrupt FLAC file: uncompressed_audio_bytes == zero'); |
|
160 |
} |
|
161 |
if (!empty($info['flac']['compressed_audio_bytes'])) { |
|
162 |
$info['flac']['compression_ratio'] = $info['flac']['compressed_audio_bytes'] / $info['flac']['uncompressed_audio_bytes']; |
|
163 |
} |
|
164 |
} |
|
165 |
||
166 |
// set md5_data_source - built into flac 0.5+ |
|
167 |
if (isset($info['flac']['STREAMINFO']['audio_signature'])) { |
|
168 |
||
169 |
if ($info['flac']['STREAMINFO']['audio_signature'] === str_repeat("\x00", 16)) { |
|
170 |
$this->warning('FLAC STREAMINFO.audio_signature is null (known issue with libOggFLAC)'); |
|
171 |
} |
|
172 |
else { |
|
173 |
$info['md5_data_source'] = ''; |
|
174 |
$md5 = $info['flac']['STREAMINFO']['audio_signature']; |
|
175 |
for ($i = 0; $i < strlen($md5); $i++) { |
|
176 |
$info['md5_data_source'] .= str_pad(dechex(ord($md5[$i])), 2, '00', STR_PAD_LEFT); |
|
177 |
} |
|
178 |
if (!preg_match('/^[0-9a-f]{32}$/', $info['md5_data_source'])) { |
|
179 |
unset($info['md5_data_source']); |
|
180 |
} |
|
181 |
} |
|
182 |
} |
|
183 |
||
184 |
if (isset($info['flac']['STREAMINFO']['bits_per_sample'])) { |
|
185 |
$info['audio']['bits_per_sample'] = $info['flac']['STREAMINFO']['bits_per_sample']; |
|
186 |
if ($info['audio']['bits_per_sample'] == 8) { |
|
187 |
// special case |
|
188 |
// must invert sign bit on all data bytes before MD5'ing to match FLAC's calculated value |
|
189 |
// MD5sum calculates on unsigned bytes, but FLAC calculated MD5 on 8-bit audio data as signed |
|
190 |
$this->warning('FLAC calculates MD5 data strangely on 8-bit audio, so the stored md5_data_source value will not match the decoded WAV file'); |
|
191 |
} |
|
192 |
} |
|
193 |
||
194 |
return true; |
|
195 |
} |
|
196 |
||
197 |
private function parseSTREAMINFO($BlockData) { |
|
198 |
$info = &$this->getid3->info; |
|
199 |
||
200 |
$info['flac']['STREAMINFO'] = array(); |
|
201 |
$streaminfo = &$info['flac']['STREAMINFO']; |
|
202 |
||
203 |
$streaminfo['min_block_size'] = getid3_lib::BigEndian2Int(substr($BlockData, 0, 2)); |
|
204 |
$streaminfo['max_block_size'] = getid3_lib::BigEndian2Int(substr($BlockData, 2, 2)); |
|
205 |
$streaminfo['min_frame_size'] = getid3_lib::BigEndian2Int(substr($BlockData, 4, 3)); |
|
206 |
$streaminfo['max_frame_size'] = getid3_lib::BigEndian2Int(substr($BlockData, 7, 3)); |
|
207 |
||
208 |
$SRCSBSS = getid3_lib::BigEndian2Bin(substr($BlockData, 10, 8)); |
|
209 |
$streaminfo['sample_rate'] = getid3_lib::Bin2Dec(substr($SRCSBSS, 0, 20)); |
|
210 |
$streaminfo['channels'] = getid3_lib::Bin2Dec(substr($SRCSBSS, 20, 3)) + 1; |
|
211 |
$streaminfo['bits_per_sample'] = getid3_lib::Bin2Dec(substr($SRCSBSS, 23, 5)) + 1; |
|
212 |
$streaminfo['samples_stream'] = getid3_lib::Bin2Dec(substr($SRCSBSS, 28, 36)); |
|
213 |
||
214 |
$streaminfo['audio_signature'] = substr($BlockData, 18, 16); |
|
215 |
||
216 |
if (!empty($streaminfo['sample_rate'])) { |
|
217 |
||
218 |
$info['audio']['bitrate_mode'] = 'vbr'; |
|
219 |
$info['audio']['sample_rate'] = $streaminfo['sample_rate']; |
|
220 |
$info['audio']['channels'] = $streaminfo['channels']; |
|
221 |
$info['audio']['bits_per_sample'] = $streaminfo['bits_per_sample']; |
|
222 |
$info['playtime_seconds'] = $streaminfo['samples_stream'] / $streaminfo['sample_rate']; |
|
223 |
if ($info['playtime_seconds'] > 0) { |
|
224 |
if (!$this->isDependencyFor('matroska')) { |
|
225 |
$info['audio']['bitrate'] = (($info['avdataend'] - $info['avdataoffset']) * 8) / $info['playtime_seconds']; |
|
226 |
} |
|
227 |
else { |
|
228 |
$this->warning('Cannot determine audio bitrate because total stream size is unknown'); |
|
229 |
} |
|
230 |
} |
|
231 |
||
232 |
} else { |
|
233 |
return $this->error('Corrupt METAdata block: STREAMINFO'); |
|
234 |
} |
|
235 |
||
236 |
return true; |
|
237 |
} |
|
238 |
||
239 |
private function parseAPPLICATION($BlockData) { |
|
240 |
$info = &$this->getid3->info; |
|
241 |
||
242 |
$ApplicationID = getid3_lib::BigEndian2Int(substr($BlockData, 0, 4)); |
|
243 |
$info['flac']['APPLICATION'][$ApplicationID]['name'] = self::applicationIDLookup($ApplicationID); |
|
244 |
$info['flac']['APPLICATION'][$ApplicationID]['data'] = substr($BlockData, 4); |
|
245 |
||
246 |
return true; |
|
247 |
} |
|
248 |
||
249 |
private function parseSEEKTABLE($BlockData) { |
|
250 |
$info = &$this->getid3->info; |
|
251 |
||
252 |
$offset = 0; |
|
253 |
$BlockLength = strlen($BlockData); |
|
254 |
$placeholderpattern = str_repeat("\xFF", 8); |
|
255 |
while ($offset < $BlockLength) { |
|
256 |
$SampleNumberString = substr($BlockData, $offset, 8); |
|
257 |
$offset += 8; |
|
258 |
if ($SampleNumberString == $placeholderpattern) { |
|
259 |
||
260 |
// placeholder point |
|
261 |
getid3_lib::safe_inc($info['flac']['SEEKTABLE']['placeholders'], 1); |
|
262 |
$offset += 10; |
|
263 |
||
264 |
} else { |
|
265 |
||
266 |
$SampleNumber = getid3_lib::BigEndian2Int($SampleNumberString); |
|
267 |
$info['flac']['SEEKTABLE'][$SampleNumber]['offset'] = getid3_lib::BigEndian2Int(substr($BlockData, $offset, 8)); |
|
268 |
$offset += 8; |
|
269 |
$info['flac']['SEEKTABLE'][$SampleNumber]['samples'] = getid3_lib::BigEndian2Int(substr($BlockData, $offset, 2)); |
|
270 |
$offset += 2; |
|
271 |
||
272 |
} |
|
273 |
} |
|
274 |
||
275 |
return true; |
|
276 |
} |
|
277 |
||
278 |
private function parseVORBIS_COMMENT($BlockData) { |
|
279 |
$info = &$this->getid3->info; |
|
280 |
||
281 |
$getid3_ogg = new getid3_ogg($this->getid3); |
|
282 |
if ($this->isDependencyFor('matroska')) { |
|
283 |
$getid3_ogg->setStringMode($this->data_string); |
|
284 |
} |
|
285 |
$getid3_ogg->ParseVorbisComments(); |
|
286 |
if (isset($info['ogg'])) { |
|
287 |
unset($info['ogg']['comments_raw']); |
|
288 |
$info['flac']['VORBIS_COMMENT'] = $info['ogg']; |
|
289 |
unset($info['ogg']); |
|
290 |
} |
|
291 |
||
292 |
unset($getid3_ogg); |
|
293 |
||
294 |
return true; |
|
295 |
} |
|
296 |
||
297 |
private function parseCUESHEET($BlockData) { |
|
298 |
$info = &$this->getid3->info; |
|
299 |
$offset = 0; |
|
300 |
$info['flac']['CUESHEET']['media_catalog_number'] = trim(substr($BlockData, $offset, 128), "\0"); |
|
301 |
$offset += 128; |
|
302 |
$info['flac']['CUESHEET']['lead_in_samples'] = getid3_lib::BigEndian2Int(substr($BlockData, $offset, 8)); |
|
303 |
$offset += 8; |
|
304 |
$info['flac']['CUESHEET']['flags']['is_cd'] = (bool) (getid3_lib::BigEndian2Int(substr($BlockData, $offset, 1)) & 0x80); |
|
305 |
$offset += 1; |
|
306 |
||
307 |
$offset += 258; // reserved |
|
308 |
||
309 |
$info['flac']['CUESHEET']['number_tracks'] = getid3_lib::BigEndian2Int(substr($BlockData, $offset, 1)); |
|
310 |
$offset += 1; |
|
311 |
||
312 |
for ($track = 0; $track < $info['flac']['CUESHEET']['number_tracks']; $track++) { |
|
313 |
$TrackSampleOffset = getid3_lib::BigEndian2Int(substr($BlockData, $offset, 8)); |
|
314 |
$offset += 8; |
|
315 |
$TrackNumber = getid3_lib::BigEndian2Int(substr($BlockData, $offset, 1)); |
|
316 |
$offset += 1; |
|
317 |
||
318 |
$info['flac']['CUESHEET']['tracks'][$TrackNumber]['sample_offset'] = $TrackSampleOffset; |
|
319 |
||
320 |
$info['flac']['CUESHEET']['tracks'][$TrackNumber]['isrc'] = substr($BlockData, $offset, 12); |
|
321 |
$offset += 12; |
|
322 |
||
323 |
$TrackFlagsRaw = getid3_lib::BigEndian2Int(substr($BlockData, $offset, 1)); |
|
324 |
$offset += 1; |
|
325 |
$info['flac']['CUESHEET']['tracks'][$TrackNumber]['flags']['is_audio'] = (bool) ($TrackFlagsRaw & 0x80); |
|
326 |
$info['flac']['CUESHEET']['tracks'][$TrackNumber]['flags']['pre_emphasis'] = (bool) ($TrackFlagsRaw & 0x40); |
|
327 |
||
328 |
$offset += 13; // reserved |
|
329 |
||
330 |
$info['flac']['CUESHEET']['tracks'][$TrackNumber]['index_points'] = getid3_lib::BigEndian2Int(substr($BlockData, $offset, 1)); |
|
331 |
$offset += 1; |
|
332 |
||
333 |
for ($index = 0; $index < $info['flac']['CUESHEET']['tracks'][$TrackNumber]['index_points']; $index++) { |
|
334 |
$IndexSampleOffset = getid3_lib::BigEndian2Int(substr($BlockData, $offset, 8)); |
|
335 |
$offset += 8; |
|
336 |
$IndexNumber = getid3_lib::BigEndian2Int(substr($BlockData, $offset, 1)); |
|
337 |
$offset += 1; |
|
338 |
||
339 |
$offset += 3; // reserved |
|
340 |
||
341 |
$info['flac']['CUESHEET']['tracks'][$TrackNumber]['indexes'][$IndexNumber] = $IndexSampleOffset; |
|
342 |
} |
|
343 |
} |
|
344 |
||
345 |
return true; |
|
346 |
} |
|
347 |
||
348 |
/** |
|
349 |
* Parse METADATA_BLOCK_PICTURE flac structure and extract attachment |
|
350 |
* External usage: audio.ogg |
|
351 |
*/ |
|
352 |
public function parsePICTURE() { |
|
353 |
$info = &$this->getid3->info; |
|
354 |
||
355 |
$picture['typeid'] = getid3_lib::BigEndian2Int($this->fread(4)); |
|
|
7
cf61fcea0001
resynchronize code repo with production
ymh <ymh.work@gmail.com>
parents:
5
diff
changeset
|
356 |
$picture['picturetype'] = self::pictureTypeLookup($picture['typeid']); |
| 0 | 357 |
$picture['image_mime'] = $this->fread(getid3_lib::BigEndian2Int($this->fread(4))); |
358 |
$descr_length = getid3_lib::BigEndian2Int($this->fread(4)); |
|
359 |
if ($descr_length) { |
|
360 |
$picture['description'] = $this->fread($descr_length); |
|
361 |
} |
|
|
7
cf61fcea0001
resynchronize code repo with production
ymh <ymh.work@gmail.com>
parents:
5
diff
changeset
|
362 |
$picture['image_width'] = getid3_lib::BigEndian2Int($this->fread(4)); |
|
cf61fcea0001
resynchronize code repo with production
ymh <ymh.work@gmail.com>
parents:
5
diff
changeset
|
363 |
$picture['image_height'] = getid3_lib::BigEndian2Int($this->fread(4)); |
| 0 | 364 |
$picture['color_depth'] = getid3_lib::BigEndian2Int($this->fread(4)); |
365 |
$picture['colors_indexed'] = getid3_lib::BigEndian2Int($this->fread(4)); |
|
|
7
cf61fcea0001
resynchronize code repo with production
ymh <ymh.work@gmail.com>
parents:
5
diff
changeset
|
366 |
$picture['datalength'] = getid3_lib::BigEndian2Int($this->fread(4)); |
| 0 | 367 |
|
368 |
if ($picture['image_mime'] == '-->') { |
|
|
7
cf61fcea0001
resynchronize code repo with production
ymh <ymh.work@gmail.com>
parents:
5
diff
changeset
|
369 |
$picture['data'] = $this->fread($picture['datalength']); |
| 0 | 370 |
} else { |
371 |
$picture['data'] = $this->saveAttachment( |
|
|
7
cf61fcea0001
resynchronize code repo with production
ymh <ymh.work@gmail.com>
parents:
5
diff
changeset
|
372 |
str_replace('/', '_', $picture['picturetype']).'_'.$this->ftell(), |
| 0 | 373 |
$this->ftell(), |
|
7
cf61fcea0001
resynchronize code repo with production
ymh <ymh.work@gmail.com>
parents:
5
diff
changeset
|
374 |
$picture['datalength'], |
| 0 | 375 |
$picture['image_mime']); |
376 |
} |
|
377 |
||
378 |
$info['flac']['PICTURE'][] = $picture; |
|
379 |
||
380 |
return true; |
|
381 |
} |
|
382 |
||
383 |
public static function metaBlockTypeLookup($blocktype) { |
|
384 |
static $lookup = array( |
|
385 |
0 => 'STREAMINFO', |
|
386 |
1 => 'PADDING', |
|
387 |
2 => 'APPLICATION', |
|
388 |
3 => 'SEEKTABLE', |
|
389 |
4 => 'VORBIS_COMMENT', |
|
390 |
5 => 'CUESHEET', |
|
391 |
6 => 'PICTURE', |
|
392 |
); |
|
393 |
return (isset($lookup[$blocktype]) ? $lookup[$blocktype] : 'reserved'); |
|
394 |
} |
|
395 |
||
396 |
public static function applicationIDLookup($applicationid) { |
|
397 |
// http://flac.sourceforge.net/id.html |
|
398 |
static $lookup = array( |
|
399 |
0x41544348 => 'FlacFile', // "ATCH" |
|
400 |
0x42534F4C => 'beSolo', // "BSOL" |
|
401 |
0x42554753 => 'Bugs Player', // "BUGS" |
|
402 |
0x43756573 => 'GoldWave cue points (specification)', // "Cues" |
|
403 |
0x46696361 => 'CUE Splitter', // "Fica" |
|
404 |
0x46746F6C => 'flac-tools', // "Ftol" |
|
405 |
0x4D4F5442 => 'MOTB MetaCzar', // "MOTB" |
|
406 |
0x4D505345 => 'MP3 Stream Editor', // "MPSE" |
|
407 |
0x4D754D4C => 'MusicML: Music Metadata Language', // "MuML" |
|
408 |
0x52494646 => 'Sound Devices RIFF chunk storage', // "RIFF" |
|
409 |
0x5346464C => 'Sound Font FLAC', // "SFFL" |
|
410 |
0x534F4E59 => 'Sony Creative Software', // "SONY" |
|
411 |
0x5351455A => 'flacsqueeze', // "SQEZ" |
|
412 |
0x54745776 => 'TwistedWave', // "TtWv" |
|
413 |
0x55495453 => 'UITS Embedding tools', // "UITS" |
|
414 |
0x61696666 => 'FLAC AIFF chunk storage', // "aiff" |
|
415 |
0x696D6167 => 'flac-image application for storing arbitrary files in APPLICATION metadata blocks', // "imag" |
|
416 |
0x7065656D => 'Parseable Embedded Extensible Metadata (specification)', // "peem" |
|
417 |
0x71667374 => 'QFLAC Studio', // "qfst" |
|
418 |
0x72696666 => 'FLAC RIFF chunk storage', // "riff" |
|
419 |
0x74756E65 => 'TagTuner', // "tune" |
|
420 |
0x78626174 => 'XBAT', // "xbat" |
|
421 |
0x786D6364 => 'xmcd', // "xmcd" |
|
422 |
); |
|
423 |
return (isset($lookup[$applicationid]) ? $lookup[$applicationid] : 'reserved'); |
|
424 |
} |
|
425 |
||
426 |
public static function pictureTypeLookup($type_id) { |
|
427 |
static $lookup = array ( |
|
428 |
0 => 'Other', |
|
429 |
1 => '32x32 pixels \'file icon\' (PNG only)', |
|
430 |
2 => 'Other file icon', |
|
431 |
3 => 'Cover (front)', |
|
432 |
4 => 'Cover (back)', |
|
433 |
5 => 'Leaflet page', |
|
434 |
6 => 'Media (e.g. label side of CD)', |
|
435 |
7 => 'Lead artist/lead performer/soloist', |
|
436 |
8 => 'Artist/performer', |
|
437 |
9 => 'Conductor', |
|
438 |
10 => 'Band/Orchestra', |
|
439 |
11 => 'Composer', |
|
440 |
12 => 'Lyricist/text writer', |
|
441 |
13 => 'Recording Location', |
|
442 |
14 => 'During recording', |
|
443 |
15 => 'During performance', |
|
444 |
16 => 'Movie/video screen capture', |
|
445 |
17 => 'A bright coloured fish', |
|
446 |
18 => 'Illustration', |
|
447 |
19 => 'Band/artist logotype', |
|
448 |
20 => 'Publisher/Studio logotype', |
|
449 |
); |
|
450 |
return (isset($lookup[$type_id]) ? $lookup[$type_id] : 'reserved'); |
|
451 |
} |
|
452 |
||
|
7
cf61fcea0001
resynchronize code repo with production
ymh <ymh.work@gmail.com>
parents:
5
diff
changeset
|
453 |
} |