|
1
|
|
|
<?php |
|
2
|
|
|
// +----------------------------------------------------------------------+ |
|
3
|
|
|
// | PHP version 5 | |
|
4
|
|
|
// +----------------------------------------------------------------------+ |
|
5
|
|
|
// | Copyright (c) 2002-2006 James Heinrich, Allan Hansen | |
|
6
|
|
|
// +----------------------------------------------------------------------+ |
|
7
|
|
|
// | This source file is subject to version 2 of the GPL license, | |
|
8
|
|
|
// | that is bundled with this package in the file license.txt and is | |
|
9
|
|
|
// | available through the world-wide-web at the following url: | |
|
10
|
|
|
// | http://www.gnu.org/copyleft/gpl.html | |
|
11
|
|
|
// +----------------------------------------------------------------------+ |
|
12
|
|
|
// | getID3() - http://getid3.sourceforge.net or http://www.getid3.org | |
|
13
|
|
|
// +----------------------------------------------------------------------+ |
|
14
|
|
|
// | Authors: James Heinrich <info�getid3*org> | |
|
15
|
|
|
// | Allan Hansen <ah�artemis*dk> | |
|
16
|
|
|
// +----------------------------------------------------------------------+ |
|
17
|
|
|
// | module.audio.wavpack.php | |
|
18
|
|
|
// | module for analyzing WavPack v4.0+ Audio files | |
|
19
|
|
|
// | dependencies: audio-video.riff | |
|
20
|
|
|
// +----------------------------------------------------------------------+ |
|
21
|
|
|
// |
|
22
|
|
|
// $Id: module.audio.wavpack.php,v 1.2 2006/11/02 10:48:02 ah Exp $ |
|
23
|
|
|
|
|
24
|
|
|
class getid3_wavpack extends getid3_handler |
|
25
|
|
|
{ |
|
26
|
|
|
|
|
27
|
|
|
public function Analyze() |
|
28
|
|
|
{ |
|
29
|
|
|
$getid3 = $this->getid3; |
|
30
|
|
|
|
|
31
|
|
|
$getid3->include_module('audio-video.riff'); |
|
32
|
|
|
|
|
33
|
|
|
$getid3->info['wavpack'] = []; |
|
34
|
|
|
$info_wavpack = &$getid3->info['wavpack']; |
|
35
|
|
|
|
|
36
|
|
|
fseek($getid3->fp, $getid3->info['avdataoffset'], SEEK_SET); |
|
37
|
|
|
|
|
38
|
|
|
while (true) { |
|
39
|
|
|
$wavpack_header = fread($getid3->fp, 32); |
|
40
|
|
|
|
|
41
|
|
|
if (ftell($getid3->fp) >= $getid3->info['avdataend']) { |
|
42
|
|
|
break; |
|
43
|
|
|
} elseif (feof($getid3->fp)) { |
|
44
|
|
|
break; |
|
45
|
|
|
} elseif ((@$info_wavpack_blockheader['total_samples'] > 0) |
|
|
|
|
|
|
46
|
|
|
&& (@$info_wavpack_blockheader['block_samples'] > 0) |
|
47
|
|
|
&& (!isset($info_wavpack['riff_trailer_size']) || ($info_wavpack['riff_trailer_size'] <= 0)) |
|
48
|
|
|
&& ((false === @$info_wavpack['config_flags']['md5_checksum']) || !empty($getid3->info['md5_data_source']))) { |
|
49
|
|
|
break; |
|
50
|
|
|
} |
|
51
|
|
|
|
|
52
|
|
|
$block_header_offset = ftell($getid3->fp) - 32; |
|
53
|
|
|
$block_header_magic = substr($wavpack_header, 0, 4); |
|
54
|
|
|
$block_header_size = getid3_lib::LittleEndian2Int(substr($wavpack_header, 4, 4)); |
|
55
|
|
|
|
|
56
|
|
|
if ('wvpk' != $block_header_magic) { |
|
57
|
|
|
throw new getid3_exception('Expecting "wvpk" at offset ' . $block_header_offset . ', found "' . $block_header_magic . '"'); |
|
58
|
|
|
} |
|
59
|
|
|
|
|
60
|
|
|
if ((@$info_wavpack_blockheader['block_samples'] <= 0) || (@$info_wavpack_blockheader['total_samples'] <= 0)) { |
|
61
|
|
|
// Also, it is possible that the first block might not have |
|
62
|
|
|
// any samples (block_samples == 0) and in this case you should skip blocks |
|
63
|
|
|
// until you find one with samples because the other information (like |
|
64
|
|
|
// total_samples) are not guaranteed to be correct until (block_samples > 0) |
|
65
|
|
|
|
|
66
|
|
|
// Finally, I have defined a format for files in which the length is not known |
|
67
|
|
|
// (for example when raw files are created using pipes). In these cases |
|
68
|
|
|
// total_samples will be -1 and you must seek to the final block to determine |
|
69
|
|
|
// the total number of samples. |
|
70
|
|
|
|
|
71
|
|
|
$getid3->info['audio']['dataformat'] = 'wavpack'; |
|
72
|
|
|
$getid3->info['fileformat'] = 'wavpack'; |
|
73
|
|
|
$getid3->info['audio']['lossless'] = true; |
|
74
|
|
|
$getid3->info['audio']['bitrate_mode'] = 'vbr'; |
|
75
|
|
|
|
|
76
|
|
|
$info_wavpack['blockheader']['offset'] = $block_header_offset; |
|
77
|
|
|
$info_wavpack['blockheader']['magic'] = $block_header_magic; |
|
78
|
|
|
$info_wavpack['blockheader']['size'] = $block_header_size; |
|
79
|
|
|
$info_wavpack_blockheader = &$info_wavpack['blockheader']; |
|
80
|
|
|
|
|
81
|
|
|
if ($info_wavpack_blockheader['size'] >= 0x100000) { |
|
82
|
|
|
throw new getid3_exception('Expecting WavPack block size less than "0x100000", found "' . $info_wavpack_blockheader['size'] . '" at offset ' . $info_wavpack_blockheader['offset']); |
|
83
|
|
|
} |
|
84
|
|
|
|
|
85
|
|
|
$info_wavpack_blockheader['minor_version'] = ord($wavpack_header{8}); |
|
86
|
|
|
$info_wavpack_blockheader['major_version'] = ord($wavpack_header{9}); |
|
87
|
|
|
|
|
88
|
|
|
if ((4 != $info_wavpack_blockheader['major_version']) |
|
89
|
|
|
|| (($info_wavpack_blockheader['minor_version'] < 4) |
|
90
|
|
|
&& ($info_wavpack_blockheader['minor_version'] > 16))) { |
|
91
|
|
|
throw new getid3_exception('Expecting WavPack version between "4.2" and "4.16", found version "' . $info_wavpack_blockheader['major_version'] . '.' . $info_wavpack_blockheader['minor_version'] . '" at offset ' . $info_wavpack_blockheader['offset']); |
|
92
|
|
|
} |
|
93
|
|
|
|
|
94
|
|
|
$info_wavpack_blockheader['track_number'] = ord($wavpack_header{10}); // unused |
|
95
|
|
|
$info_wavpack_blockheader['index_number'] = ord($wavpack_header{11}); // unused |
|
96
|
|
|
|
|
97
|
|
|
getid3_lib::ReadSequence( |
|
98
|
|
|
'LittleEndian2Int', |
|
99
|
|
|
$info_wavpack_blockheader, |
|
100
|
|
|
$wavpack_header, |
|
101
|
|
|
12, |
|
102
|
|
|
[ |
|
103
|
|
|
'total_samples' => 4, |
|
104
|
|
|
'block_index' => 4, |
|
105
|
|
|
'block_samples' => 4, |
|
106
|
|
|
'flags_raw' => 4, |
|
107
|
|
|
'crc' => 4 |
|
108
|
|
|
] |
|
109
|
|
|
); |
|
110
|
|
|
|
|
111
|
|
|
$info_wavpack_blockheader['flags']['bytes_per_sample'] = 1 + ($info_wavpack_blockheader['flags_raw'] & 0x00000003); |
|
112
|
|
|
$info_wavpack_blockheader['flags']['mono'] = (bool)($info_wavpack_blockheader['flags_raw'] & 0x00000004); |
|
113
|
|
|
$info_wavpack_blockheader['flags']['hybrid'] = (bool)($info_wavpack_blockheader['flags_raw'] & 0x00000008); |
|
114
|
|
|
$info_wavpack_blockheader['flags']['joint_stereo'] = (bool)($info_wavpack_blockheader['flags_raw'] & 0x00000010); |
|
115
|
|
|
$info_wavpack_blockheader['flags']['cross_decorrelation'] = (bool)($info_wavpack_blockheader['flags_raw'] & 0x00000020); |
|
116
|
|
|
$info_wavpack_blockheader['flags']['hybrid_noiseshape'] = (bool)($info_wavpack_blockheader['flags_raw'] & 0x00000040); |
|
117
|
|
|
$info_wavpack_blockheader['flags']['ieee_32bit_float'] = (bool)($info_wavpack_blockheader['flags_raw'] & 0x00000080); |
|
118
|
|
|
$info_wavpack_blockheader['flags']['int_32bit'] = (bool)($info_wavpack_blockheader['flags_raw'] & 0x00000100); |
|
119
|
|
|
$info_wavpack_blockheader['flags']['hybrid_bitrate_noise'] = (bool)($info_wavpack_blockheader['flags_raw'] & 0x00000200); |
|
120
|
|
|
$info_wavpack_blockheader['flags']['hybrid_balance_noise'] = (bool)($info_wavpack_blockheader['flags_raw'] & 0x00000400); |
|
121
|
|
|
$info_wavpack_blockheader['flags']['multichannel_initial'] = (bool)($info_wavpack_blockheader['flags_raw'] & 0x00000800); |
|
122
|
|
|
$info_wavpack_blockheader['flags']['multichannel_final'] = (bool)($info_wavpack_blockheader['flags_raw'] & 0x00001000); |
|
123
|
|
|
|
|
124
|
|
|
$getid3->info['audio']['lossless'] = !$info_wavpack_blockheader['flags']['hybrid']; |
|
125
|
|
|
} |
|
126
|
|
|
|
|
127
|
|
|
while (!feof($getid3->fp) && (ftell($getid3->fp) < ($block_header_offset + $block_header_size + 8))) { |
|
128
|
|
|
$metablock = ['offset' => ftell($getid3->fp)]; |
|
129
|
|
|
$metablockheader = fread($getid3->fp, 2); |
|
130
|
|
|
if (feof($getid3->fp)) { |
|
131
|
|
|
break; |
|
132
|
|
|
} |
|
133
|
|
|
$metablock['id'] = ord($metablockheader{0}); |
|
134
|
|
|
$metablock['function_id'] = ($metablock['id'] & 0x3F); |
|
135
|
|
|
$metablock['function_name'] = $this->WavPackMetablockNameLookup($metablock['function_id']); |
|
136
|
|
|
|
|
137
|
|
|
// The 0x20 bit in the id of the meta subblocks (which is defined as |
|
138
|
|
|
// ID_OPTIONAL_DATA) is a permanent part of the id. The idea is that |
|
139
|
|
|
// if a decoder encounters an id that it does not know about, it uses |
|
140
|
|
|
// that "ID_OPTIONAL_DATA" flag to determine what to do. If it is set |
|
141
|
|
|
// then the decoder simply ignores the metadata, but if it is zero |
|
142
|
|
|
// then the decoder should quit because it means that an understanding |
|
143
|
|
|
// of the metadata is required to correctly decode the audio. |
|
144
|
|
|
|
|
145
|
|
|
$metablock['non_decoder'] = (bool)($metablock['id'] & 0x20); |
|
146
|
|
|
$metablock['padded_data'] = (bool)($metablock['id'] & 0x40); |
|
147
|
|
|
$metablock['large_block'] = (bool)($metablock['id'] & 0x80); |
|
148
|
|
|
if ($metablock['large_block']) { |
|
149
|
|
|
$metablockheader .= fread($getid3->fp, 2); |
|
150
|
|
|
} |
|
151
|
|
|
$metablock['size'] = getid3_lib::LittleEndian2Int(substr($metablockheader, 1)) * 2; // size is stored in words |
|
152
|
|
|
$metablock['data'] = null; |
|
153
|
|
|
|
|
154
|
|
|
if ($metablock['size'] > 0) { |
|
155
|
|
|
switch ($metablock['function_id']) { |
|
156
|
|
|
case 0x21: // ID_RIFF_HEADER |
|
157
|
|
|
case 0x22: // ID_RIFF_TRAILER |
|
158
|
|
|
case 0x23: // ID_REPLAY_GAIN |
|
159
|
|
|
case 0x24: // ID_CUESHEET |
|
160
|
|
|
case 0x25: // ID_CONFIG_BLOCK |
|
161
|
|
|
case 0x26: // ID_MD5_CHECKSUM |
|
162
|
|
|
$metablock['data'] = fread($getid3->fp, $metablock['size']); |
|
163
|
|
|
|
|
164
|
|
|
if ($metablock['padded_data']) { |
|
165
|
|
|
// padded to the nearest even byte |
|
166
|
|
|
$metablock['size']--; |
|
167
|
|
|
$metablock['data'] = substr($metablock['data'], 0, -1); |
|
168
|
|
|
} |
|
169
|
|
|
break; |
|
170
|
|
|
|
|
171
|
|
|
case 0x00: // ID_DUMMY |
|
172
|
|
|
case 0x01: // ID_ENCODER_INFO |
|
173
|
|
|
case 0x02: // ID_DECORR_TERMS |
|
174
|
|
|
case 0x03: // ID_DECORR_WEIGHTS |
|
175
|
|
|
case 0x04: // ID_DECORR_SAMPLES |
|
176
|
|
|
case 0x05: // ID_ENTROPY_VARS |
|
177
|
|
|
case 0x06: // ID_HYBRID_PROFILE |
|
178
|
|
|
case 0x07: // ID_SHAPING_WEIGHTS |
|
179
|
|
|
case 0x08: // ID_FLOAT_INFO |
|
180
|
|
|
case 0x09: // ID_INT32_INFO |
|
181
|
|
|
case 0x0A: // ID_WV_BITSTREAM |
|
182
|
|
|
case 0x0B: // ID_WVC_BITSTREAM |
|
183
|
|
|
case 0x0C: // ID_WVX_BITSTREAM |
|
184
|
|
|
case 0x0D: // ID_CHANNEL_INFO |
|
185
|
|
|
fseek($getid3->fp, $metablock['offset'] + ($metablock['large_block'] ? 4 : 2) + $metablock['size'], SEEK_SET); |
|
186
|
|
|
break; |
|
187
|
|
|
|
|
188
|
|
|
default: |
|
189
|
|
|
$getid3->warning('Unexpected metablock type "0x' . str_pad(dechex($metablock['function_id']), 2, '0', STR_PAD_LEFT) . '" at offset ' . $metablock['offset']); |
|
190
|
|
|
fseek($getid3->fp, $metablock['offset'] + ($metablock['large_block'] ? 4 : 2) + $metablock['size'], SEEK_SET); |
|
191
|
|
|
break; |
|
192
|
|
|
} |
|
193
|
|
|
|
|
194
|
|
|
switch ($metablock['function_id']) { |
|
195
|
|
|
case 0x21: // ID_RIFF_HEADER |
|
196
|
|
|
|
|
197
|
|
|
$original_wav_filesize = getid3_lib::LittleEndian2Int(substr($metablock['data'], 4, 4)); |
|
198
|
|
|
|
|
199
|
|
|
// Clone getid3 |
|
200
|
|
|
$clone = clone $getid3; |
|
201
|
|
|
|
|
202
|
|
|
// Analyze clone by string |
|
203
|
|
|
$riff = new getid3_riff($clone); |
|
204
|
|
|
$riff->AnalyzeString($metablock['data']); |
|
205
|
|
|
|
|
206
|
|
|
// Import from clone and destroy |
|
207
|
|
|
$metablock['riff'] = $clone->info['riff']; |
|
208
|
|
|
$getid3->warnings($clone->warnings()); |
|
|
|
|
|
|
209
|
|
|
unset($clone); |
|
210
|
|
|
|
|
211
|
|
|
// Save RIFF header - we may need it later for RIFF footer parsing |
|
212
|
|
|
$this->riff_header = $metablock['data']; |
|
|
|
|
|
|
213
|
|
|
|
|
214
|
|
|
$metablock['riff']['original_filesize'] = $original_wav_filesize; |
|
215
|
|
|
$info_wavpack['riff_trailer_size'] = $original_wav_filesize - $metablock['riff']['WAVE']['data'][0]['size'] - $metablock['riff']['header_size']; |
|
216
|
|
|
|
|
217
|
|
|
$getid3->info['audio']['sample_rate'] = $metablock['riff']['raw']['fmt ']['nSamplesPerSec']; |
|
218
|
|
|
$getid3->info['playtime_seconds'] = $info_wavpack_blockheader['total_samples'] / $getid3->info['audio']['sample_rate']; |
|
219
|
|
|
|
|
220
|
|
|
// Safe RIFF header in case there's a RIFF footer later |
|
221
|
|
|
$metablock_riff_header = $metablock['data']; |
|
222
|
|
|
break; |
|
223
|
|
|
|
|
224
|
|
|
case 0x22: // ID_RIFF_TRAILER |
|
225
|
|
|
|
|
226
|
|
|
$metablock_riff_footer = $metablock_riff_header . $metablock['data']; |
|
|
|
|
|
|
227
|
|
|
|
|
228
|
|
|
$start_offset = $metablock['offset'] + ($metablock['large_block'] ? 4 : 2); |
|
229
|
|
|
|
|
230
|
|
|
$ftell_old = ftell($getid3->fp); |
|
231
|
|
|
|
|
232
|
|
|
// Clone getid3 |
|
233
|
|
|
$clone = clone $getid3; |
|
234
|
|
|
|
|
235
|
|
|
// Call public method that really should be private |
|
236
|
|
|
$riff = new getid3_riff($clone); |
|
237
|
|
|
$metablock['riff'] = $riff->ParseRIFF($start_offset, $start_offset + $metablock['size']); |
|
238
|
|
|
unset($clone); |
|
239
|
|
|
|
|
240
|
|
|
fseek($getid3->fp, $ftell_old, SEEK_SET); |
|
241
|
|
|
|
|
242
|
|
|
if (!empty($metablock['riff']['INFO'])) { |
|
243
|
|
|
getid3_riff::RIFFCommentsParse($metablock['riff']['INFO'], $metablock['comments']); |
|
244
|
|
|
$getid3->info['tags']['riff'] = $metablock['comments']; |
|
245
|
|
|
} |
|
246
|
|
|
break; |
|
247
|
|
|
|
|
248
|
|
|
case 0x23: // ID_REPLAY_GAIN |
|
249
|
|
|
$getid3->warning('WavPack "Replay Gain" contents not yet handled by getID3() in metablock at offset ' . $metablock['offset']); |
|
250
|
|
|
break; |
|
251
|
|
|
|
|
252
|
|
|
case 0x24: // ID_CUESHEET |
|
253
|
|
|
$getid3->warning('WavPack "Cuesheet" contents not yet handled by getID3() in metablock at offset ' . $metablock['offset']); |
|
254
|
|
|
break; |
|
255
|
|
|
|
|
256
|
|
|
case 0x25: // ID_CONFIG_BLOCK |
|
257
|
|
|
$metablock['flags_raw'] = getid3_lib::LittleEndian2Int(substr($metablock['data'], 0, 3)); |
|
258
|
|
|
|
|
259
|
|
|
$metablock['flags']['adobe_mode'] = (bool)($metablock['flags_raw'] & 0x000001); // "adobe" mode for 32-bit floats |
|
260
|
|
|
$metablock['flags']['fast_flag'] = (bool)($metablock['flags_raw'] & 0x000002); // fast mode |
|
261
|
|
|
$metablock['flags']['very_fast_flag'] = (bool)($metablock['flags_raw'] & 0x000004); // double fast |
|
262
|
|
|
$metablock['flags']['high_flag'] = (bool)($metablock['flags_raw'] & 0x000008); // high quality mode |
|
263
|
|
|
$metablock['flags']['very_high_flag'] = (bool)($metablock['flags_raw'] & 0x000010); // double high (not used yet) |
|
264
|
|
|
$metablock['flags']['bitrate_kbps'] = (bool)($metablock['flags_raw'] & 0x000020); // bitrate is kbps, not bits / sample |
|
265
|
|
|
$metablock['flags']['auto_shaping'] = (bool)($metablock['flags_raw'] & 0x000040); // automatic noise shaping |
|
266
|
|
|
$metablock['flags']['shape_override'] = (bool)($metablock['flags_raw'] & 0x000080); // shaping mode specified |
|
267
|
|
|
$metablock['flags']['joint_override'] = (bool)($metablock['flags_raw'] & 0x000100); // joint-stereo mode specified |
|
268
|
|
|
$metablock['flags']['copy_time'] = (bool)($metablock['flags_raw'] & 0x000200); // copy file-time from source |
|
269
|
|
|
$metablock['flags']['create_exe'] = (bool)($metablock['flags_raw'] & 0x000400); // create executable |
|
270
|
|
|
$metablock['flags']['create_wvc'] = (bool)($metablock['flags_raw'] & 0x000800); // create correction file |
|
271
|
|
|
$metablock['flags']['optimize_wvc'] = (bool)($metablock['flags_raw'] & 0x001000); // maximize bybrid compression |
|
272
|
|
|
$metablock['flags']['quality_mode'] = (bool)($metablock['flags_raw'] & 0x002000); // psychoacoustic quality mode |
|
273
|
|
|
$metablock['flags']['raw_flag'] = (bool)($metablock['flags_raw'] & 0x004000); // raw mode (not implemented yet) |
|
274
|
|
|
$metablock['flags']['calc_noise'] = (bool)($metablock['flags_raw'] & 0x008000); // calc noise in hybrid mode |
|
275
|
|
|
$metablock['flags']['lossy_mode'] = (bool)($metablock['flags_raw'] & 0x010000); // obsolete (for information) |
|
276
|
|
|
$metablock['flags']['extra_mode'] = (bool)($metablock['flags_raw'] & 0x020000); // extra processing mode |
|
277
|
|
|
$metablock['flags']['skip_wvx'] = (bool)($metablock['flags_raw'] & 0x040000); // no wvx stream w/ floats & big ints |
|
278
|
|
|
$metablock['flags']['md5_checksum'] = (bool)($metablock['flags_raw'] & 0x080000); // compute & store MD5 signature |
|
279
|
|
|
$metablock['flags']['quiet_mode'] = (bool)($metablock['flags_raw'] & 0x100000); // don't report progress % |
|
280
|
|
|
|
|
281
|
|
|
$info_wavpack['config_flags'] = $metablock['flags']; |
|
282
|
|
|
|
|
283
|
|
|
$getid3->info['audio']['encoder_options'] = trim( |
|
284
|
|
|
($info_wavpack_blockheader['flags']['hybrid'] ? ' -b???' : '') |
|
285
|
|
|
. ($metablock['flags']['adobe_mode'] ? ' -a' : '') |
|
286
|
|
|
. ($metablock['flags']['optimize_wvc'] ? ' -cc' : '') |
|
287
|
|
|
. ($metablock['flags']['create_exe'] ? ' -e' : '') |
|
288
|
|
|
. ($metablock['flags']['fast_flag'] ? ' -f' : '') |
|
289
|
|
|
. ($metablock['flags']['joint_override'] ? ' -j?' : '') |
|
290
|
|
|
. ($metablock['flags']['high_flag'] ? ' -h' : '') |
|
291
|
|
|
. ($metablock['flags']['md5_checksum'] ? ' -m' : '') |
|
292
|
|
|
. ($metablock['flags']['calc_noise'] ? ' -n' : '') |
|
293
|
|
|
. ($metablock['flags']['shape_override'] ? ' -s?' : '') |
|
294
|
|
|
. ($metablock['flags']['extra_mode'] ? ' -x?' : '') |
|
295
|
|
|
); |
|
296
|
|
|
if (!$getid3->info['audio']['encoder_options']) { |
|
297
|
|
|
unset($getid3->info['audio']['encoder_options']); |
|
298
|
|
|
} |
|
299
|
|
|
break; |
|
300
|
|
|
|
|
301
|
|
|
case 0x26: // ID_MD5_CHECKSUM |
|
302
|
|
|
if (16 == strlen($metablock['data'])) { |
|
303
|
|
|
$getid3->info['md5_data_source'] = strtolower(getid3_lib::PrintHexBytes($metablock['data'], true, false, false)); |
|
304
|
|
|
} else { |
|
305
|
|
|
$getid3->warning('Expecting 16 bytes of WavPack "MD5 Checksum" in metablock at offset ' . $metablock['offset'] . ', but found ' . strlen($metablock['data']) . ' bytes'); |
|
306
|
|
|
} |
|
307
|
|
|
break; |
|
308
|
|
|
|
|
309
|
|
|
case 0x00: // ID_DUMMY |
|
310
|
|
|
case 0x01: // ID_ENCODER_INFO |
|
311
|
|
|
case 0x02: // ID_DECORR_TERMS |
|
312
|
|
|
case 0x03: // ID_DECORR_WEIGHTS |
|
313
|
|
|
case 0x04: // ID_DECORR_SAMPLES |
|
314
|
|
|
case 0x05: // ID_ENTROPY_VARS |
|
315
|
|
|
case 0x06: // ID_HYBRID_PROFILE |
|
316
|
|
|
case 0x07: // ID_SHAPING_WEIGHTS |
|
317
|
|
|
case 0x08: // ID_FLOAT_INFO |
|
318
|
|
|
case 0x09: // ID_INT32_INFO |
|
319
|
|
|
case 0x0A: // ID_WV_BITSTREAM |
|
320
|
|
|
case 0x0B: // ID_WVC_BITSTREAM |
|
321
|
|
|
case 0x0C: // ID_WVX_BITSTREAM |
|
322
|
|
|
case 0x0D: // ID_CHANNEL_INFO |
|
323
|
|
|
unset($metablock); |
|
324
|
|
|
break; |
|
325
|
|
|
} |
|
326
|
|
|
} |
|
327
|
|
|
|
|
328
|
|
|
if (!empty($metablock)) { |
|
329
|
|
|
$info_wavpack['metablocks'][] = $metablock; |
|
330
|
|
|
} |
|
331
|
|
|
} |
|
332
|
|
|
} |
|
333
|
|
|
|
|
334
|
|
|
$getid3->info['audio']['encoder'] = 'WavPack v' . $info_wavpack_blockheader['major_version'] . '.' . str_pad($info_wavpack_blockheader['minor_version'], 2, '0', STR_PAD_LEFT); |
|
335
|
|
|
$getid3->info['audio']['bits_per_sample'] = $info_wavpack_blockheader['flags']['bytes_per_sample'] * 8; |
|
336
|
|
|
$getid3->info['audio']['channels'] = ($info_wavpack_blockheader['flags']['mono'] ? 1 : 2); |
|
337
|
|
|
|
|
338
|
|
|
if (@$getid3->info['playtime_seconds']) { |
|
339
|
|
|
$getid3->info['audio']['bitrate'] = (($getid3->info['avdataend'] - $getid3->info['avdataoffset']) * 8) / $getid3->info['playtime_seconds']; |
|
340
|
|
|
} else { |
|
341
|
|
|
$getid3->info['audio']['dataformat'] = 'wvc'; |
|
342
|
|
|
} |
|
343
|
|
|
|
|
344
|
|
|
return true; |
|
345
|
|
|
} |
|
346
|
|
|
|
|
347
|
|
|
public static function WavPackMetablockNameLookup($id) |
|
348
|
|
|
{ |
|
349
|
|
|
static $lookup = [ |
|
350
|
|
|
0x00 => 'Dummy', |
|
351
|
|
|
0x01 => 'Encoder Info', |
|
352
|
|
|
0x02 => 'Decorrelation Terms', |
|
353
|
|
|
0x03 => 'Decorrelation Weights', |
|
354
|
|
|
0x04 => 'Decorrelation Samples', |
|
355
|
|
|
0x05 => 'Entropy Variables', |
|
356
|
|
|
0x06 => 'Hybrid Profile', |
|
357
|
|
|
0x07 => 'Shaping Weights', |
|
358
|
|
|
0x08 => 'Float Info', |
|
359
|
|
|
0x09 => 'Int32 Info', |
|
360
|
|
|
0x0A => 'WV Bitstream', |
|
361
|
|
|
0x0B => 'WVC Bitstream', |
|
362
|
|
|
0x0C => 'WVX Bitstream', |
|
363
|
|
|
0x0D => 'Channel Info', |
|
364
|
|
|
0x21 => 'RIFF header', |
|
365
|
|
|
0x22 => 'RIFF trailer', |
|
366
|
|
|
0x23 => 'Replay Gain', |
|
367
|
|
|
0x24 => 'Cuesheet', |
|
368
|
|
|
0x25 => 'Config Block', |
|
369
|
|
|
0x26 => 'MD5 Checksum', |
|
370
|
|
|
]; |
|
371
|
|
|
|
|
372
|
|
|
return (@$lookup[$id]); |
|
373
|
|
|
} |
|
374
|
|
|
|
|
375
|
|
|
} |
|
376
|
|
|
|
|
377
|
|
|
|
|
378
|
|
|
|
mambax7 /
xoopseditors
Loading history...