Passed
Branch master (f2d2e3)
by Michael
18:45
created

getid3_riff::ParseRIFF()   F

Complexity

Conditions 48
Paths 387

Size

Total Lines 320

Duplication

Lines 0
Ratio 0 %

Importance

Changes 1
Bugs 0 Features 0
Metric Value
cc 48
c 1
b 0
f 0
nc 387
dl 0
loc 320
rs 0.7966

How to fix   Long Method    Complexity   

Long Method

Small methods make your code easier to understand, in particular if combined with a good name. Besides, if your method is small, finding a good name is usually much easier.

For example, if you find yourself adding comments to a method's body, this is usually a good sign to extract the commented part to a new method, and use the comment as a starting point when coming up with a good name for this new method.

Commonly applied refactorings include:

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-video.riff.php                                          |
18
// | module for analyzing RIFF files:                                     |
19
// |    Wave, AVI, AIFF/AIFC, (MP3,AC3)/RIFF, Wavpack3, 8SVX              |
20
// | dependencies: module.audio.mp3.php (optional)                        |
21
// |               module.audio.ac3.php (optional)                        |
22
// |               module.audio.dts.php (optional)                        |
23
// |               module.audio-video.mpeg.php (optional)                 |
24
// +----------------------------------------------------------------------+
25
//
26
// $Id: module.audio-video.riff.php,v 1.10 2006/12/03 20:13:17 ah Exp $
27
28
        
29
        
30
class getid3_riff extends getid3_handler
31
{
32
33
    private $endian_function = 'LittleEndian2Int';
34
35
36
    public function Analyze() {
37
        
38
        $getid3 = $this->getid3;
39
40
        $getid3->info['riff']['raw'] = array ();
41
        $info_riff             = &$getid3->info['riff'];
42
        $info_riff_raw         = &$info_riff['raw'];
43
        $info_audio            = &$getid3->info['audio'];
44
        $info_video            = &$getid3->info['video'];
45
        $info_avdataoffset     = &$getid3->info['avdataoffset'];
46
        $info_avdataend        = &$getid3->info['avdataend'];
47
        $info_audio_dataformat = &$info_audio['dataformat'];
48
        $info_riff_audio       = &$info_riff['audio'];
49
        $info_riff_video       = &$info_riff['video'];
50
51
        $original['avdataend'] = $info_avdataend;
0 ignored issues
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Comprehensibility Best Practice introduced by
$original was never initialized. Although not strictly required by PHP, it is generally a good practice to add $original = array(); before regardless.
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52
53
        $this->fseek($info_avdataoffset, SEEK_SET);
54
        $riff_header   = $this->fread(12);
55
        
56
        $riff_sub_type = substr($riff_header, 8, 4);
57
        
58
        switch (substr($riff_header, 0, 4)) {
59
        
60
            case 'FORM':
61
                $getid3->info['fileformat'] = 'aiff';
62
                $this->endian_function      = 'BigEndian2Int';
63
                $riff_header_size           = getid3_lib::BigEndian2Int(substr($riff_header, 4, 4));
64
                $info_riff[$riff_sub_type]  = $this->ParseRIFF($info_avdataoffset + 12, $info_avdataoffset + $riff_header_size);
65
                $info_riff['header_size']   = $riff_header_size;
66
                break;
67
68
69
            case 'RIFF':
70
            case 'SDSS':  // SDSS is identical to RIFF, just renamed. Used by SmartSound QuickTracks (www.smartsound.com)
71
            case 'RMP3':  // RMP3 is identical to RIFF, just renamed. Used by [unknown program] when creating RIFF-MP3s
72
73
                if ($riff_sub_type == 'RMP3') {
74
                    $riff_sub_type = 'WAVE';
75
                }
76
77
                $getid3->info['fileformat'] = 'riff';
78
                $this->endian_function      = 'LittleEndian2Int';
79
                $riff_header_size           = getid3_lib::LittleEndian2Int(substr($riff_header, 4, 4));
80
                $info_riff[$riff_sub_type]  = $this->ParseRIFF($info_avdataoffset + 12, $info_avdataoffset + $riff_header_size);
81
                $info_riff['header_size']   = $riff_header_size;
82
                if ($riff_sub_type == 'WAVE') {
83
                    $info_riff_wave = &$info_riff['WAVE'];
84
                }
85
                break;
86
87
88
            default:
89
                throw new getid3_exception('Cannot parse RIFF (this is maybe not a RIFF / WAV / AVI file?) - expecting "FORM|RIFF|SDSS|RMP3" found "'.$riff_sub_type.'" instead');
90
        }
91
        
92
        $endian_function = $this->endian_function;
93
94
        $stream_index = 0;
95
        switch ($riff_sub_type) {
96
97
            case 'WAVE':
98
                
99
                if (empty($info_audio['bitrate_mode'])) {
100
                    $info_audio['bitrate_mode'] = 'cbr';
101
                }
102
                
103
                if (empty($info_audio_dataformat)) {
104
                    $info_audio_dataformat = 'wav';
105
                }
106
107
                if (isset($info_riff_wave['data'][0]['offset'])) {
108
                    $info_avdataoffset = $info_riff_wave['data'][0]['offset'] + 8;
109
                    $info_avdataend    = $info_avdataoffset + $info_riff_wave['data'][0]['size'];
110
                }
111
                
112
                if (isset($info_riff_wave['fmt '][0]['data'])) {
113
                    
114
                    $info_riff_audio[$stream_index] = getid3_riff::RIFFparseWAVEFORMATex($info_riff_wave['fmt '][0]['data']);
115
                    $info_audio['wformattag'] = $info_riff_audio[$stream_index]['raw']['wFormatTag'];
116
                    $info_riff_raw['fmt '] = $info_riff_audio[$stream_index]['raw'];
117
                    unset($info_riff_audio[$stream_index]['raw']);
118
                    $info_audio['streams'][$stream_index] = $info_riff_audio[$stream_index];
119
120
                    $info_audio = getid3_riff::array_merge_noclobber($info_audio, $info_riff_audio[$stream_index]);
121
                    if (substr($info_audio['codec'], 0, strlen('unknown: 0x')) == 'unknown: 0x') {
122
                        $getid3->warning('Audio codec = '.$info_audio['codec']);
123
                    }
124
                    $info_audio['bitrate'] = $info_riff_audio[$stream_index]['bitrate'];
125
126
                    $getid3->info['playtime_seconds'] = (float)((($info_avdataend - $info_avdataoffset) * 8) / $info_audio['bitrate']);
127
                    
128
                    $info_audio['lossless'] = false;
129
130
                    if (isset($info_riff_wave['data'][0]['offset']) && isset($info_riff_raw['fmt ']['wFormatTag'])) {
131
                        
132
                        switch ($info_riff_raw['fmt ']['wFormatTag']) {
133
134
                            case 0x0001:  // PCM
135
                                $info_audio['lossless'] = true;
136
                                break;
137
138
                            case 0x2000:  // AC-3
139
                                $info_audio_dataformat = 'ac3';
140
                                break;
141
142
                            default:
143
                                // do nothing
144
                                break;
145
146
                        }
147
                    }
148
                    
149
                    $info_audio['streams'][$stream_index]['wformattag']   = $info_audio['wformattag'];
150
                    $info_audio['streams'][$stream_index]['bitrate_mode'] = $info_audio['bitrate_mode'];
151
                    $info_audio['streams'][$stream_index]['lossless']     = $info_audio['lossless'];
152
                    $info_audio['streams'][$stream_index]['dataformat']   = $info_audio_dataformat;
153
                }
154
155
156
                if (isset($info_riff_wave['rgad'][0]['data'])) {
157
158
                    // shortcuts
159
                    $rgadData = &$info_riff_wave['rgad'][0]['data'];
160
                    $info_riff_raw['rgad']    = array ('track'=>array(), 'album'=>array());
161
                    $info_riff_raw_rgad       = &$info_riff_raw['rgad'];
162
                    $info_riff_raw_rgad_track = &$info_riff_raw_rgad['track'];
163
                    $info_riff_raw_rgad_album = &$info_riff_raw_rgad['album'];
164
165
                    $info_riff_raw_rgad['fPeakAmplitude']      = getid3_riff::BigEndian2Float(strrev(substr($rgadData, 0, 4)));   // LittleEndian2Float()
166
                    $info_riff_raw_rgad['nRadioRgAdjust']      = getid3_lib::$endian_function(substr($rgadData, 4, 2));
167
                    $info_riff_raw_rgad['nAudiophileRgAdjust'] = getid3_lib::$endian_function(substr($rgadData, 6, 2));
168
169
                    $n_track_rg_adjust_bit_string              = str_pad(decbin($info_riff_raw_rgad['nRadioRgAdjust']),      16, '0', STR_PAD_LEFT);
170
                    $n_album_rg_adjust_bit_string              = str_pad(decbin($info_riff_raw_rgad['nAudiophileRgAdjust']), 16, '0', STR_PAD_LEFT);
171
                    
172
                    $info_riff_raw_rgad_track['name']          = bindec(substr($n_track_rg_adjust_bit_string, 0, 3));
173
                    $info_riff_raw_rgad_track['originator']    = bindec(substr($n_track_rg_adjust_bit_string, 3, 3));
174
                    $info_riff_raw_rgad_track['signbit']       = bindec($n_track_rg_adjust_bit_string[6]);
175
                    $info_riff_raw_rgad_track['adjustment']    = bindec(substr($n_track_rg_adjust_bit_string, 7, 9));
176
                    $info_riff_raw_rgad_album['name']          = bindec(substr($n_album_rg_adjust_bit_string, 0, 3));
177
                    $info_riff_raw_rgad_album['originator']    = bindec(substr($n_album_rg_adjust_bit_string, 3, 3));
178
                    $info_riff_raw_rgad_album['signbit']       = bindec($n_album_rg_adjust_bit_string[6]);
179
                    $info_riff_raw_rgad_album['adjustment']    = bindec(substr($n_album_rg_adjust_bit_string, 7, 9));
180
181
                    $info_riff['rgad']['peakamplitude'] = $info_riff_raw_rgad['fPeakAmplitude'];
182
                    if (($info_riff_raw_rgad_track['name'] != 0) && ($info_riff_raw_rgad_track['originator'] != 0)) {
183
                        $info_riff['rgad']['track']['name']       = getid3_lib_replaygain::NameLookup($info_riff_raw_rgad_track['name']);
184
                        $info_riff['rgad']['track']['originator'] = getid3_lib_replaygain::OriginatorLookup($info_riff_raw_rgad_track['originator']);
185
                        $info_riff['rgad']['track']['adjustment'] = getid3_lib_replaygain::AdjustmentLookup($info_riff_raw_rgad_track['adjustment'], $info_riff_raw_rgad_track['signbit']);
186
                    }
187
                    
188
                    if (($info_riff_raw_rgad_album['name'] != 0) && ($info_riff_raw_rgad_album['originator'] != 0)) {
189
                        $info_riff['rgad']['album']['name']       = getid3_lib_replaygain::NameLookup($info_riff_raw_rgad_album['name']);
190
                        $info_riff['rgad']['album']['originator'] = getid3_lib_replaygain::OriginatorLookup($info_riff_raw_rgad_album['originator']);
191
                        $info_riff['rgad']['album']['adjustment'] = getid3_lib_replaygain::AdjustmentLookup($info_riff_raw_rgad_album['adjustment'], $info_riff_raw_rgad_album['signbit']);
192
                    }
193
                }
194
195
                if (isset($info_riff_wave['fact'][0]['data'])) {
196
                    
197
                    $info_riff_raw['fact']['NumberOfSamples'] = getid3_lib::$endian_function(substr($info_riff_wave['fact'][0]['data'], 0, 4));
198
199
                    // This should be a good way of calculating exact playtime, but some sample files have had incorrect number of samples, so cannot use this method
200
                    // if (!empty($info_riff_raw['fmt ']['nSamplesPerSec'])) {
201
                    //     $getid3->info['playtime_seconds'] = (float)$info_riff_raw['fact']['NumberOfSamples'] / $info_riff_raw['fmt ']['nSamplesPerSec'];
202
                    // }
203
                }
204
                
205
                
206
                if (!empty($info_riff_raw['fmt ']['nAvgBytesPerSec'])) {
207
                    $info_audio['bitrate'] = (int)$info_riff_raw['fmt ']['nAvgBytesPerSec'] * 8;
208
                }
209
210
                if (isset($info_riff_wave['bext'][0]['data'])) {
211
                
212
                    $info_riff_wave_bext_0 = &$info_riff_wave['bext'][0];
213
214
                    getid3_lib::ReadSequence('LittleEndian2Int', $info_riff_wave_bext_0, $info_riff_wave_bext_0['data'], 0,
215
                        array (
216
                            'title'          => -256,
217
                            'author'         => -32,
218
                            'reference'      => -32,
219
                            'origin_date'    => -10,
220
                            'origin_time'    => -8,
221
                            'time_reference' => 8,
222
                            'bwf_version'    => 1,
223
                            'reserved'       => 254
224
                        )
225
                    );
226
                    
227
                    foreach (array ('title', 'author', 'reference') as $key) {
228
                        $info_riff_wave_bext_0[$key] = trim($info_riff_wave_bext_0[$key]);
229
                    }
230
                            
231
                    $info_riff_wave_bext_0['coding_history'] = explode("\r\n", trim(substr($info_riff_wave_bext_0['data'], 601)));
232
233
                    $info_riff_wave_bext_0['origin_date_unix'] = gmmktime(substr($info_riff_wave_bext_0['origin_time'], 0, 2),
234
                                                                          substr($info_riff_wave_bext_0['origin_time'], 3, 2),
235
                                                                          substr($info_riff_wave_bext_0['origin_time'], 6, 2),
236
                                                                          substr($info_riff_wave_bext_0['origin_date'], 5, 2),
237
                                                                          substr($info_riff_wave_bext_0['origin_date'], 8, 2),
238
                                                                          substr($info_riff_wave_bext_0['origin_date'], 0, 4));
239
240
                    $info_riff['comments']['author'][] = $info_riff_wave_bext_0['author'];
241
                    $info_riff['comments']['title'][]  = $info_riff_wave_bext_0['title'];
242
                }
243
244
                if (isset($info_riff_wave['MEXT'][0]['data'])) {
245
                    
246
                    $info_riff_wave_mext_0 = &$info_riff_wave['MEXT'][0];
247
248
                    $info_riff_wave_mext_0['raw']['sound_information']      = getid3_lib::LittleEndian2Int(substr($info_riff_wave_mext_0['data'], 0, 2));
249
                    $info_riff_wave_mext_0['flags']['homogenous']           = (bool)($info_riff_wave_mext_0['raw']['sound_information'] & 0x0001);
250
                    if ($info_riff_wave_mext_0['flags']['homogenous']) {
251
                        $info_riff_wave_mext_0['flags']['padding']          = ($info_riff_wave_mext_0['raw']['sound_information'] & 0x0002) ? false : true;
252
                        $info_riff_wave_mext_0['flags']['22_or_44']         = (bool)($info_riff_wave_mext_0['raw']['sound_information'] & 0x0004);
253
                        $info_riff_wave_mext_0['flags']['free_format']      = (bool)($info_riff_wave_mext_0['raw']['sound_information'] & 0x0008);
254
255
                        $info_riff_wave_mext_0['nominal_frame_size']        = getid3_lib::LittleEndian2Int(substr($info_riff_wave_mext_0['data'], 2, 2));
256
                    }
257
                    $info_riff_wave_mext_0['anciliary_data_length']         = getid3_lib::LittleEndian2Int(substr($info_riff_wave_mext_0['data'], 6, 2));
258
                    $info_riff_wave_mext_0['raw']['anciliary_data_def']     = getid3_lib::LittleEndian2Int(substr($info_riff_wave_mext_0['data'], 8, 2));
259
                    $info_riff_wave_mext_0['flags']['anciliary_data_left']  = (bool)($info_riff_wave_mext_0['raw']['anciliary_data_def'] & 0x0001);
260
                    $info_riff_wave_mext_0['flags']['anciliary_data_free']  = (bool)($info_riff_wave_mext_0['raw']['anciliary_data_def'] & 0x0002);
261
                    $info_riff_wave_mext_0['flags']['anciliary_data_right'] = (bool)($info_riff_wave_mext_0['raw']['anciliary_data_def'] & 0x0004);
262
                }
263
264
                if (isset($info_riff_wave['cart'][0]['data'])) {
265
                    
266
                    $info_riff_wave_cart_0 = &$info_riff_wave['cart'][0];
267
268
                    getid3_lib::ReadSequence('LittleEndian2Int', $info_riff_wave_cart_0, $info_riff_wave_cart_0['data'], 0,
269
                        array (
270
                            'version'              => -4,
271
                            'title'                => -64,
272
                            'artist'               => -64,
273
                            'cut_id'               => -64,
274
                            'client_id'            => -64,
275
                            'category'             => -64,
276
                            'classification'       => -64,
277
                            'out_cue'              => -64,
278
                            'start_date'           => -10,
279
                            'start_time'           => -8,
280
                            'end_date'             => -10,
281
                            'end_time'             => -8,
282
                            'producer_app_id'      => -64,
283
                            'producer_app_version' => -64,
284
                            'user_defined_text'    => -64,
285
                        )
286
                    );
287
                    
288
                    foreach (array ('artist', 'cut_id', 'client_id', 'category', 'classification', 'out_cue', 'start_date', 'start_time', 'end_date', 'end_time', 'producer_app_id', 'producer_app_version', 'user_defined_text') as $key) {
289
                        $info_riff_wave_cart_0[$key] = trim($info_riff_wave_cart_0[$key]);
290
                    }
291
                                    
292
                    $info_riff_wave_cart_0['zero_db_reference'] = getid3_lib::LittleEndian2Int(substr($info_riff_wave_cart_0['data'], 680, 4), true);
293
                                    
294
                    for ($i = 0; $i < 8; $i++) {
295
                        $info_riff_wave_cart_0['post_time'][$i]['usage_fourcc'] =                              substr($info_riff_wave_cart_0['data'], 684 + ($i * 8), 4);
296
                        $info_riff_wave_cart_0['post_time'][$i]['timer_value']  = getid3_lib::LittleEndian2Int(substr($info_riff_wave_cart_0['data'], 684 + ($i * 8) + 4, 4));
297
                    }               
298
                    $info_riff_wave_cart_0['url']              =                 trim(substr($info_riff_wave_cart_0['data'],  748, 1024));
299
                    $info_riff_wave_cart_0['tag_text']         = explode("\r\n", trim(substr($info_riff_wave_cart_0['data'], 1772)));
300
                                    
301
                    $info_riff['comments']['artist'][] = $info_riff_wave_cart_0['artist'];
302
                    $info_riff['comments']['title'][]  = $info_riff_wave_cart_0['title'];
303
                }                   
304
305
                if (!isset($info_audio['bitrate']) && isset($info_riff_audio[$stream_index]['bitrate'])) {
306
                    $info_audio['bitrate'] = $info_riff_audio[$stream_index]['bitrate'];
307
                    $getid3->info['playtime_seconds'] = (float)((($info_avdataend - $info_avdataoffset) * 8) / $info_audio['bitrate']);
308
                }
309
310
                if (@$getid3->info['wavpack']) {
311
                    
312
                    if (!$this->data_string_flag)  {
313
                     
314
                        $info_audio_dataformat      = 'wavpack';
315
                        $info_audio['bitrate_mode'] = 'vbr';
316
                        $info_audio['encoder']      = 'WavPack v'.$getid3->info['wavpack']['version'];
317
    
318
                        // Reset to the way it was - RIFF parsing will have messed this up
319
                        $info_avdataend        = $original['avdataend'];
320
                        $info_audio['bitrate'] = (($info_avdataend - $info_avdataoffset) * 8) / $getid3->info['playtime_seconds'];
321
    
322
                        $this->fseek($info_avdataoffset - 44, SEEK_SET);
323
                        $riff_data = $this->fread(44);
324
                        $orignal_riff_header_size = getid3_lib::LittleEndian2Int(substr($riff_data,  4, 4)) +  8;
325
                        $orignal_riff_data_size   = getid3_lib::LittleEndian2Int(substr($riff_data, 40, 4)) + 44;
326
    
327
                        if ($orignal_riff_header_size > $orignal_riff_data_size) {
328
                            $info_avdataend -= ($orignal_riff_header_size - $orignal_riff_data_size);
329
                            $this->fseek($info_avdataend, SEEK_SET);
330
                            $riff_data .= $this->fread($orignal_riff_header_size - $orignal_riff_data_size);
331
                        }
332
    
333
                        // move the data chunk after all other chunks (if any)
334
                        // so that the RIFF parser doesn't see EOF when trying
335
                        // to skip over the data chunk
336
                        $riff_data = substr($riff_data, 0, 36).substr($riff_data, 44).substr($riff_data, 36, 8);
337
338
                        // Save audio info key
339
                        $saved_info_audio = $info_audio;
340
341
                        // Analyze riff_data 
342
                        $this->AnalyzeString($riff_data);
343
                        
344
                        // Restore info key
345
                        $info_audio = $saved_info_audio;
346
                    }
347
                }
348
349
                if (isset($info_riff_raw['fmt ']['wFormatTag'])) {
350
                    
351
                    switch ($info_riff_raw['fmt ']['wFormatTag']) {
352
                    
353
                        case 0x08AE: // ClearJump LiteWave
354
                            $info_audio['bitrate_mode'] = 'vbr';
355
                            $info_audio_dataformat      = 'litewave';
356
357
                            //typedef struct tagSLwFormat {
358
                            //  WORD    m_wCompFormat;     // low byte defines compression method, high byte is compression flags
359
                            //  DWORD   m_dwScale;         // scale factor for lossy compression
360
                            //  DWORD   m_dwBlockSize;     // number of samples in encoded blocks
361
                            //  WORD    m_wQuality;        // alias for the scale factor
362
                            //  WORD    m_wMarkDistance;   // distance between marks in bytes
363
                            //  WORD    m_wReserved;
364
                            //
365
                            //  //following paramters are ignored if CF_FILESRC is not set
366
                            //  DWORD   m_dwOrgSize;       // original file size in bytes
367
                            //  WORD    m_bFactExists;     // indicates if 'fact' chunk exists in the original file
368
                            //  DWORD   m_dwRiffChunkSize; // riff chunk size in the original file
369
                            //
370
                            //  PCMWAVEFORMAT m_OrgWf;     // original wave format
371
                            // }SLwFormat, *PSLwFormat;
372
373
                            $info_riff['litewave']['raw'] = array ();
374
                            $info_riff_litewave           = &$info_riff['litewave'];
375
                            $info_riff_litewave_raw       = &$info_riff_litewave['raw'];
376
377
                            getid3_lib::ReadSequence('LittleEndian2Int', $info_riff_litewave_raw, $info_riff_wave['fmt '][0]['data'], 18,
0 ignored issues
show
Comprehensibility Best Practice introduced by
The variable $info_riff_wave does not seem to be defined for all execution paths leading up to this point.
Loading history...
378
                                array (
379
                                    'compression_method' => 1,
380
                                    'compression_flags'  => 1,
381
                                    'm_dwScale'          => 4,
382
                                    'm_dwBlockSize'      => 4,
383
                                    'm_wQuality'         => 2,
384
                                    'm_wMarkDistance'    => 2,
385
                                    'm_wReserved'        => 2,
386
                                    'm_dwOrgSize'        => 4,
387
                                    'm_bFactExists'      => 2,
388
                                    'm_dwRiffChunkSize'  => 4
389
                                )
390
                            );
391
392
                            //$info_riff_litewave['quality_factor'] = intval(round((2000 - $info_riff_litewave_raw['m_dwScale']) / 20));
393
                            $info_riff_litewave['quality_factor'] = $info_riff_litewave_raw['m_wQuality'];
394
395
                            $info_riff_litewave['flags']['raw_source']    = ($info_riff_litewave_raw['compression_flags'] & 0x01) ? false : true;
396
                            $info_riff_litewave['flags']['vbr_blocksize'] = ($info_riff_litewave_raw['compression_flags'] & 0x02) ? false : true;
397
                            $info_riff_litewave['flags']['seekpoints']    = (bool)($info_riff_litewave_raw['compression_flags'] & 0x04);
398
399
                            $info_audio['lossless']        = (($info_riff_litewave_raw['m_wQuality'] == 100) ? true : false);
400
                            $info_audio['encoder_options'] = '-q'.$info_riff_litewave['quality_factor'];
401
                            break;
402
                    }
403
                }
404
405
                if ($info_avdataend > $getid3->info['filesize']) {
406
407
                    switch (@$info_audio_dataformat) {
408
409
                        case 'wavpack': // WavPack
410
                        case 'lpac':    // LPAC
411
                        case 'ofr':     // OptimFROG
412
                        case 'ofs':     // OptimFROG DualStream
413
                            // lossless compressed audio formats that keep original RIFF headers - skip warning
414
                            break;
415
416
417
                        case 'litewave':
418
419
                            if (($info_avdataend - $getid3->info['filesize']) == 1) {
420
                                // LiteWave appears to incorrectly *not* pad actual output file
421
                                // to nearest WORD boundary so may appear to be short by one
422
                                // byte, in which case - skip warning
423
                            } else {
424
                                // Short by more than one byte, throw warning
425
                                $getid3->warning('Probably truncated file - expecting '.$info_riff[$riff_sub_type]['data'][0]['size'].' bytes of data, only found '.($getid3->info['filesize'] - $info_avdataoffset).' (short by '.($info_riff[$riff_sub_type]['data'][0]['size'] - ($getid3->info['filesize'] - $info_avdataoffset)).' bytes)');
426
                            }
427
                            break;
428
429
430
                        default:
431
432
                            if ((($info_avdataend - $getid3->info['filesize']) == 1) && (($info_riff[$riff_sub_type]['data'][0]['size'] % 2) == 0) && ((($getid3->info['filesize'] - $info_avdataoffset) % 2) == 1)) {
433
                                // output file appears to be incorrectly *not* padded to nearest WORD boundary
434
                                // Output less severe warning
435
                                $getid3->warning('File should probably be padded to nearest WORD boundary, but it is not (expecting '.$info_riff[$riff_sub_type]['data'][0]['size'].' bytes of data, only found '.($getid3->info['filesize'] - $info_avdataoffset).' therefore short by '.($info_riff[$riff_sub_type]['data'][0]['size'] - ($getid3->info['filesize'] - $info_avdataoffset)).' bytes)');
436
                                $info_avdataend = $getid3->info['filesize'];
437
                                break;
438
                                
439
                            }
440
                            // Short by more than one byte, throw warning
441
                            $getid3->warning('Probably truncated file - expecting '.$info_riff[$riff_sub_type]['data'][0]['size'].' bytes of data, only found '.($getid3->info['filesize'] - $info_avdataoffset).' (short by '.($info_riff[$riff_sub_type]['data'][0]['size'] - ($getid3->info['filesize'] - $info_avdataoffset)).' bytes)');
442
                            $info_avdataend = $getid3->info['filesize'];
443
                            break;
444
                    }
445
                }
446
                
447
                if (!empty($getid3->info['mpeg']['audio']['LAME']['audio_bytes'])) {
448
                    if ((($info_avdataend - $info_avdataoffset) - $getid3->info['mpeg']['audio']['LAME']['audio_bytes']) == 1) {
449
                        $info_avdataend--;
450
                        $getid3->warning('Extra null byte at end of MP3 data assumed to be RIFF padding and therefore ignored');
451
                    }
452
                }
453
                
454
                if (@$info_audio_dataformat == 'ac3') {
455
                    unset($info_audio['bits_per_sample']);
456
                    if (!empty($getid3->info['ac3']['bitrate']) && ($getid3->info['ac3']['bitrate'] != $info_audio['bitrate'])) {
457
                        $info_audio['bitrate'] = $getid3->info['ac3']['bitrate'];
458
                    }
459
                }
460
                break;
461
462
463
            case 'AVI ':
464
                $info_video['bitrate_mode'] = 'vbr'; // maybe not, but probably
465
                $info_video['dataformat']   = 'avi';
466
                $getid3->info['mime_type']  = 'video/avi';
467
468
                if (isset($info_riff[$riff_sub_type]['movi']['offset'])) {
469
                    $info_avdataoffset = $info_riff[$riff_sub_type]['movi']['offset'] + 8;
470
                    $info_avdataend    = $info_avdataoffset + $info_riff[$riff_sub_type]['movi']['size'];
471
                    if ($info_avdataend > $getid3->info['filesize']) {
472
                        $getid3->warning('Probably truncated file - expecting '.$info_riff[$riff_sub_type]['movi']['size'].' bytes of data, only found '.($getid3->info['filesize'] - $info_avdataoffset).' (short by '.($info_riff[$riff_sub_type]['movi']['size'] - ($getid3->info['filesize'] - $info_avdataoffset)).' bytes)');
473
                        $info_avdataend = $getid3->info['filesize'];
474
                    }
475
                }
476
477
                if (isset($info_riff['AVI ']['hdrl']['avih'][$stream_index]['data'])) {
478
                    $avihData = $info_riff['AVI ']['hdrl']['avih'][$stream_index]['data'];
479
480
                    $info_riff_raw['avih'] = array ();
481
                    $info_riff_raw_avih = &$info_riff_raw['avih'];
482
            
483
                    getid3_lib::ReadSequence($this->endian_function, $info_riff_raw_avih, $avihData, 0, 
484
                        array (
485
                            'dwMicroSecPerFrame'    => 4, // frame display rate (or 0L)
486
                            'dwMaxBytesPerSec'      => 4, // max. transfer rate
487
                            'dwPaddingGranularity'  => 4, // pad to multiples of this size; normally 2K.
488
                            'dwFlags'               => 4, // the ever-present flags
489
                            'dwTotalFrames'         => 4, // # frames in file
490
                            'dwInitialFrames'       => 4,
491
                            'dwStreams'             => 4,
492
                            'dwSuggestedBufferSize' => 4,
493
                            'dwWidth'               => 4,
494
                            'dwHeight'              => 4,
495
                            'dwScale'               => 4,
496
                            'dwRate'                => 4,
497
                            'dwStart'               => 4,
498
                            'dwLength'              => 4
499
                        )
500
                    );
501
502
                    $info_riff_raw_avih['flags']['hasindex']     = (bool)($info_riff_raw_avih['dwFlags'] & 0x00000010);
503
                    $info_riff_raw_avih['flags']['mustuseindex'] = (bool)($info_riff_raw_avih['dwFlags'] & 0x00000020);
504
                    $info_riff_raw_avih['flags']['interleaved']  = (bool)($info_riff_raw_avih['dwFlags'] & 0x00000100);
505
                    $info_riff_raw_avih['flags']['trustcktype']  = (bool)($info_riff_raw_avih['dwFlags'] & 0x00000800);
506
                    $info_riff_raw_avih['flags']['capturedfile'] = (bool)($info_riff_raw_avih['dwFlags'] & 0x00010000);
507
                    $info_riff_raw_avih['flags']['copyrighted']  = (bool)($info_riff_raw_avih['dwFlags'] & 0x00020010);
508
509
                    $info_riff_video[$stream_index] = array ();
510
                    $info_riff_video_current = &$info_riff_video[$stream_index];
511
512
                    if ($info_riff_raw_avih['dwWidth'] > 0) {
513
                        $info_riff_video_current['frame_width'] = $info_riff_raw_avih['dwWidth'];
514
                        $info_video['resolution_x']             = $info_riff_video_current['frame_width'];
515
                    }
516
                    
517
                    if ($info_riff_raw_avih['dwHeight'] > 0) {
518
                        $info_riff_video_current['frame_height'] = $info_riff_raw_avih['dwHeight'];
519
                        $info_video['resolution_y']              = $info_riff_video_current['frame_height'];
520
                    }
521
                    
522
                    if ($info_riff_raw_avih['dwTotalFrames'] > 0) {
523
                        $info_riff_video_current['total_frames'] = $info_riff_raw_avih['dwTotalFrames'];
524
                        $info_video['total_frames']              = $info_riff_video_current['total_frames'];
525
                    }
526
527
                    $info_riff_video_current['frame_rate'] = round(1000000 / $info_riff_raw_avih['dwMicroSecPerFrame'], 3);
528
                    $info_video['frame_rate'] = $info_riff_video_current['frame_rate'];
529
                }
530
                
531
                if (isset($info_riff['AVI ']['hdrl']['strl']['strh'][0]['data'])) {
532
                    if (is_array($info_riff['AVI ']['hdrl']['strl']['strh'])) {
533
                        for ($i = 0; $i < count($info_riff['AVI ']['hdrl']['strl']['strh']); $i++) {
0 ignored issues
show
Performance Best Practice introduced by
It seems like you are calling the size function count() as part of the test condition. You might want to compute the size beforehand, and not on each iteration.

If the size of the collection does not change during the iteration, it is generally a good practice to compute it beforehand, and not on each iteration:

for ($i=0; $i<count($array); $i++) { // calls count() on each iteration
}

// Better
for ($i=0, $c=count($array); $i<$c; $i++) { // calls count() just once
}
Loading history...
534
                            if (isset($info_riff['AVI ']['hdrl']['strl']['strh'][$i]['data'])) {
535
                                $strh_data = $info_riff['AVI ']['hdrl']['strl']['strh'][$i]['data'];
536
                                $strh_fcc_type = substr($strh_data,  0, 4);
537
538
                                if (isset($info_riff['AVI ']['hdrl']['strl']['strf'][$i]['data'])) {
539
                                    $strf_data = $info_riff['AVI ']['hdrl']['strl']['strf'][$i]['data'];
540
541
                                    // shortcut
542
                                    $info_riff_raw_strf_strh_fcc_type_stream_index = &$info_riff_raw['strf'][$strh_fcc_type][$stream_index];
543
544
                                    switch ($strh_fcc_type) {
545
                                        case 'auds':
546
                                            $info_audio['bitrate_mode'] = 'cbr';
547
                                            $info_audio_dataformat      = 'wav';
548
                                            if (isset($info_riff_audio) && is_array($info_riff_audio)) {
549
                                                $stream_index = count($info_riff_audio);
550
                                            }
551
552
                                            $info_riff_audio[$stream_index] = getid3_riff::RIFFparseWAVEFORMATex($strf_data);
553
                                            $info_audio['wformattag'] = $info_riff_audio[$stream_index]['raw']['wFormatTag'];
554
555
                                            // shortcut
556
                                            $info_audio['streams'][$stream_index] = $info_riff_audio[$stream_index];
557
                                            $info_audio_streams_currentstream = &$info_audio['streams'][$stream_index];
558
559
                                            if (@$info_audio_streams_currentstream['bits_per_sample'] === 0) {
560
                                                unset($info_audio_streams_currentstream['bits_per_sample']);
561
                                            }
562
                                            $info_audio_streams_currentstream['wformattag'] = $info_audio_streams_currentstream['raw']['wFormatTag'];
563
                                            unset($info_audio_streams_currentstream['raw']);
564
565
                                            // shortcut
566
                                            $info_riff_raw['strf'][$strh_fcc_type][$stream_index] = $info_riff_audio[$stream_index]['raw'];
567
568
                                            unset($info_riff_audio[$stream_index]['raw']);
569
                                            $info_audio = getid3_riff::array_merge_noclobber($info_audio, $info_riff_audio[$stream_index]);
570
571
                                            $info_audio['lossless'] = false;
572
                                            switch ($info_riff_raw_strf_strh_fcc_type_stream_index['wFormatTag']) {
573
                                                
574
                                                case 0x0001:  // PCM
575
                                                    $info_audio_dataformat  = 'wav';
576
                                                    $info_audio['lossless'] = true;
577
                                                    break;
578
579
                                                case 0x0050: // MPEG Layer 2 or Layer 1
580
                                                    $info_audio_dataformat = 'mp2'; // Assume Layer-2
581
                                                    break;
582
583
                                                case 0x0055: // MPEG Layer 3
584
                                                    $info_audio_dataformat = 'mp3';
585
                                                    break;
586
587
                                                case 0x00FF: // AAC
588
                                                    $info_audio_dataformat = 'aac';
589
                                                    break;
590
591
                                                case 0x0161: // Windows Media v7 / v8 / v9
592
                                                case 0x0162: // Windows Media Professional v9
593
                                                case 0x0163: // Windows Media Lossess v9
594
                                                    $info_audio_dataformat = 'wma';
595
                                                    break;
596
597
                                                case 0x2000: // AC-3
598
                                                    $info_audio_dataformat = 'ac3';
599
                                                    break;
600
601
                                                case 0x2001: // DTS
602
                                                    $info_audio_dataformat = 'dts';
603
                                                    break;
604
605
                                                default:
606
                                                    $info_audio_dataformat = 'wav';
607
                                                    break;
608
                                            }
609
                                            $info_audio_streams_currentstream['dataformat']   = $info_audio_dataformat;
610
                                            $info_audio_streams_currentstream['lossless']     = $info_audio['lossless'];
611
                                            $info_audio_streams_currentstream['bitrate_mode'] = $info_audio['bitrate_mode'];
612
                                            break;
613
614
615
                                        case 'iavs':
616
                                        case 'vids':
617
                                            // shortcut
618
                                            $info_riff_raw['strh'][$i]  = array ();
619
                                            $info_riff_raw_strh_current = &$info_riff_raw['strh'][$i];
620
                                            
621
                                            getid3_lib::ReadSequence($this->endian_function, $info_riff_raw_strh_current, $strh_data, 0, 
622
                                                array (
623
                                                    'fccType'               => -4, // same as $strh_fcc_type;
624
                                                    'fccHandler'            => -4,
625
                                                    'dwFlags'               => 4, // Contains AVITF_* flags
626
                                                    'wPriority'             => 2,
627
                                                    'wLanguage'             => 2,
628
                                                    'dwInitialFrames'       => 4,
629
                                                    'dwScale'               => 4,
630
                                                    'dwRate'                => 4,
631
                                                    'dwStart'               => 4,
632
                                                    'dwLength'              => 4,
633
                                                    'dwSuggestedBufferSize' => 4,
634
                                                    'dwQuality'             => 4,
635
                                                    'dwSampleSize'          => 4,
636
                                                    'rcFrame'               => 4
637
                                                )
638
                                            );
639
640
                                            $info_riff_video_current['codec'] = getid3_riff::RIFFfourccLookup($info_riff_raw_strh_current['fccHandler']);
641
                                            $info_video['fourcc']             = $info_riff_raw_strh_current['fccHandler'];
642
                                            
643
                                            if (!$info_riff_video_current['codec'] && isset($info_riff_raw_strf_strh_fcc_type_stream_index['fourcc']) && getid3_riff::RIFFfourccLookup($info_riff_raw_strf_strh_fcc_type_stream_index['fourcc'])) {
644
                                                $info_riff_video_current['codec'] = getid3_riff::RIFFfourccLookup($info_riff_raw_strf_strh_fcc_type_stream_index['fourcc']);
645
                                                $info_video['fourcc']             = $info_riff_raw_strf_strh_fcc_type_stream_index['fourcc'];
646
                                            }
647
                                            
648
                                            $info_video['codec']              = $info_riff_video_current['codec'];
649
                                            $info_video['pixel_aspect_ratio'] = (float)1;
650
                                            
651
                                            switch ($info_riff_raw_strh_current['fccHandler']) {
652
                                            
653
                                                case 'HFYU': // Huffman Lossless Codec
654
                                                case 'IRAW': // Intel YUV Uncompressed
655
                                                case 'YUY2': // Uncompressed YUV 4:2:2
656
                                                    $info_video['lossless'] = true;
657
                                                    break;
658
659
                                                default:
660
                                                    $info_video['lossless'] = false;
661
                                                    break;
662
                                            }
663
664
                                            switch ($strh_fcc_type) {
665
                                                
666
                                                case 'vids':
667
                                                    getid3_lib::ReadSequence($this->endian_function, $info_riff_raw_strf_strh_fcc_type_stream_index, $strf_data, 0,
668
                                                        array (
669
                                                            'biSize'          => 4, // number of bytes required by the BITMAPINFOHEADER structure
670
                                                            'biWidth'         => 4, // width of the bitmap in pixels
671
                                                            'biHeight'        => 4, // height of the bitmap in pixels. If biHeight is positive, the bitmap is a 'bottom-up' DIB and its origin is the lower left corner. If biHeight is negative, the bitmap is a 'top-down' DIB and its origin is the upper left corner
672
                                                            'biPlanes'        => 2, // number of color planes on the target device. In most cases this value must be set to 1
673
                                                            'biBitCount'      => 2, // Specifies the number of bits per pixels
674
                                                            'fourcc'          => -4, //
675
                                                            'biSizeImage'     => 4, // size of the bitmap data section of the image (the actual pixel data, excluding BITMAPINFOHEADER and RGBQUAD structures)
676
                                                            'biXPelsPerMeter' => 4, // horizontal resolution, in pixels per metre, of the target device
677
                                                            'biYPelsPerMeter' => 4, // vertical resolution, in pixels per metre, of the target device
678
                                                            'biClrUsed'       => 4, // actual number of color indices in the color table used by the bitmap. If this value is zero, the bitmap uses the maximum number of colors corresponding to the value of the biBitCount member for the compression mode specified by biCompression
679
                                                            'biClrImportant'  => 4 // number of color indices that are considered important for displaying the bitmap. If this value is zero, all colors are important
680
                                                        )
681
                                                    );
682
683
                                                    $info_video['bits_per_sample'] = $info_riff_raw_strf_strh_fcc_type_stream_index['biBitCount'];
684
685
                                                    if ($info_riff_video_current['codec'] == 'DV') {
686
                                                        $info_riff_video_current['dv_type'] = 2;
687
                                                    }
688
                                                    break;
689
690
                                                case 'iavs':
691
                                                    $info_riff_video_current['dv_type'] = 1;
692
                                                    break;
693
                                            }
694
                                            break;
695
696
                                        default:
697
                                            $getid3->warning('Unhandled fccType for stream ('.$i.'): "'.$strh_fcc_type.'"');
698
                                            break;
699
700
                                    }
701
                                }
702
                            }
703
704
                            if (isset($info_riff_raw_strf_strh_fcc_type_stream_index['fourcc']) && getid3_riff::RIFFfourccLookup($info_riff_raw_strf_strh_fcc_type_stream_index['fourcc'])) {
705
706
                                $info_riff_video_current['codec'] = getid3_riff::RIFFfourccLookup($info_riff_raw_strf_strh_fcc_type_stream_index['fourcc']);
707
                                $info_video['codec']              = $info_riff_video_current['codec'];
708
                                $info_video['fourcc']             = $info_riff_raw_strf_strh_fcc_type_stream_index['fourcc'];
709
710
                                switch ($info_riff_raw_strf_strh_fcc_type_stream_index['fourcc']) {
711
                                
712
                                    case 'HFYU': // Huffman Lossless Codec
713
                                    case 'IRAW': // Intel YUV Uncompressed
714
                                    case 'YUY2': // Uncompressed YUV 4:2:2
715
                                        $info_video['lossless']        = true;
716
                                        $info_video['bits_per_sample'] = 24;
717
                                        break;
718
719
                                    default:
720
                                        $info_video['lossless']        = false;
721
                                        $info_video['bits_per_sample'] = 24;
722
                                        break;
723
                                }
724
725
                            }
726
                        }
727
                    }
728
                }
729
                break;
730
731
732
            case 'CDDA':
733
                $info_audio['bitrate_mode'] = 'cbr';
734
                $info_audio_dataformat      = 'cda';
735
                $info_audio['lossless']     = true;
736
                unset($getid3->info['mime_type']);
737
738
                $info_avdataoffset = 44;
739
740
                if (isset($info_riff['CDDA']['fmt '][0]['data'])) {
741
                    
742
                    $info_riff_cdda_fmt_0 = &$info_riff['CDDA']['fmt '][0];
743
744
                    getid3_lib::ReadSequence($this->endian_function, $info_riff_cdda_fmt_0, $info_riff_cdda_fmt_0['data'], 0, 
745
                        array (
746
                            'unknown1'           => 2,
747
                            'track_num'          => 2,
748
                            'disc_id'            => 4,
749
                            'start_offset_frame' => 4,
750
                            'playtime_frames'    => 4,
751
                            'unknown6'           => 4,
752
                            'unknown7'           => 4
753
                        )
754
                    );
755
756
                    $info_riff_cdda_fmt_0['start_offset_seconds'] = (float)$info_riff_cdda_fmt_0['start_offset_frame'] / 75;
757
                    $info_riff_cdda_fmt_0['playtime_seconds']     = (float)$info_riff_cdda_fmt_0['playtime_frames'] / 75;
758
                    $getid3->info['comments']['track']            = $info_riff_cdda_fmt_0['track_num'];
759
                    $getid3->info['playtime_seconds']             = $info_riff_cdda_fmt_0['playtime_seconds'];
760
761
                    // hardcoded data for CD-audio
762
                    $info_audio['sample_rate']     = 44100;
763
                    $info_audio['channels']        = 2;
764
                    $info_audio['bits_per_sample'] = 16;
765
                    $info_audio['bitrate']         = $info_audio['sample_rate'] * $info_audio['channels'] * $info_audio['bits_per_sample'];
766
                    $info_audio['bitrate_mode']    = 'cbr';
767
                }
768
                break;
769
770
771
            case 'AIFF':
772
            case 'AIFC':
773
                $info_audio['bitrate_mode'] = 'cbr';
774
                $info_audio_dataformat      = 'aiff';
775
                $info_audio['lossless']     = true;
776
                $getid3->info['mime_type']      = 'audio/x-aiff';
777
778
                if (isset($info_riff[$riff_sub_type]['SSND'][0]['offset'])) {
779
                    $info_avdataoffset = $info_riff[$riff_sub_type]['SSND'][0]['offset'] + 8;
780
                    $info_avdataend    = $info_avdataoffset + $info_riff[$riff_sub_type]['SSND'][0]['size'];
781
                    if ($info_avdataend > $getid3->info['filesize']) {
782
                        if (($info_avdataend == ($getid3->info['filesize'] + 1)) && (($getid3->info['filesize'] % 2) == 1)) {
783
                            // structures rounded to 2-byte boundary, but dumb encoders
784
                            // forget to pad end of file to make this actually work
785
                        } else {
786
                            $getid3->warning('Probable truncated AIFF file: expecting '.$info_riff[$riff_sub_type]['SSND'][0]['size'].' bytes of audio data, only '.($getid3->info['filesize'] - $info_avdataoffset).' bytes found');
787
                        }
788
                        $info_avdataend = $getid3->info['filesize'];
789
                    }
790
                }
791
792
                if (isset($info_riff[$riff_sub_type]['COMM'][0]['data'])) {
793
794
                    // shortcut
795
                    $info_riff_RIFFsubtype_COMM_0_data = &$info_riff[$riff_sub_type]['COMM'][0]['data'];
796
797
                    $info_riff_audio['channels']         = getid3_lib::BigEndianSyncSafe2Int(substr($info_riff_RIFFsubtype_COMM_0_data,  0,  2));
798
                    $info_riff_audio['total_samples']    = getid3_lib::BigEndian2Int(        substr($info_riff_RIFFsubtype_COMM_0_data,  2,  4));
799
                    $info_riff_audio['bits_per_sample']  = getid3_lib::BigEndianSyncSafe2Int(substr($info_riff_RIFFsubtype_COMM_0_data,  6,  2));
800
                    $info_riff_audio['sample_rate']      = (int)getid3_riff::BigEndian2Float(substr($info_riff_RIFFsubtype_COMM_0_data,  8, 10));
801
802
                    if ($info_riff[$riff_sub_type]['COMM'][0]['size'] > 18) {
803
                        $info_riff_audio['codec_fourcc'] =                           substr($info_riff_RIFFsubtype_COMM_0_data, 18,  4);
804
                        $codec_name_size                 = getid3_lib::BigEndian2Int(substr($info_riff_RIFFsubtype_COMM_0_data, 22,  1));
805
                        $info_riff_audio['codec_name']   =                           substr($info_riff_RIFFsubtype_COMM_0_data, 23,  $codec_name_size);
806
                        
807
                        switch ($info_riff_audio['codec_name']) {
808
                        
809
                            case 'NONE':
810
                                $info_audio['codec']    = 'Pulse Code Modulation (PCM)';
811
                                $info_audio['lossless'] = true;
812
                                break;
813
814
                            case '':
815
                                switch ($info_riff_audio['codec_fourcc']) {
816
                        
817
                                    // http://developer.apple.com/qa/snd/snd07.html
818
                                    case 'sowt':
819
                                        $info_riff_audio['codec_name'] = 'Two\'s Compliment Little-Endian PCM';
820
                                        $info_audio['lossless'] = true;
821
                                        break;
822
823
                                    case 'twos':
824
                                        $info_riff_audio['codec_name'] = 'Two\'s Compliment Big-Endian PCM';
825
                                        $info_audio['lossless'] = true;
826
                                        break;
827
828
                                    default:
829
                                        break;
830
                                }
831
                                break;
832
833
                            default:
834
                                $info_audio['codec']    = $info_riff_audio['codec_name'];
835
                                $info_audio['lossless'] = false;
836
                                break;
837
                        }
838
                    }
839
840
                    $info_audio['channels'] = $info_riff_audio['channels'];
841
                    
842
                    if ($info_riff_audio['bits_per_sample'] > 0) {
843
                        $info_audio['bits_per_sample'] = $info_riff_audio['bits_per_sample'];
844
                    }
845
                    
846
                    $info_audio['sample_rate']        = $info_riff_audio['sample_rate'];
847
                    $getid3->info['playtime_seconds'] = $info_riff_audio['total_samples'] / $info_audio['sample_rate'];
848
                }
849
850
                if (isset($info_riff[$riff_sub_type]['COMT'])) {
851
                    
852
                    $comment_count = getid3_lib::BigEndian2Int(substr($info_riff[$riff_sub_type]['COMT'][0]['data'], 0, 2));
853
                    $offset = 2;
854
                    
855
                    for ($i = 0; $i < $comment_count; $i++) {
856
                        
857
                        $getid3->info['comments_raw'][$i]['timestamp'] = getid3_lib::BigEndian2Int(        substr($info_riff[$riff_sub_type]['COMT'][0]['data'], $offset, 4));
858
                        $offset += 4;                                  
859
                                                                       
860
                        $getid3->info['comments_raw'][$i]['marker_id'] = getid3_lib::BigEndianSyncSafe2Int(substr($info_riff[$riff_sub_type]['COMT'][0]['data'], $offset, 2));
861
                        $offset += 2;                                  
862
                                                                       
863
                        $comment_length                                = getid3_lib::BigEndian2Int(        substr($info_riff[$riff_sub_type]['COMT'][0]['data'], $offset, 2));
864
                        $offset += 2;                                  
865
                                                                       
866
                        $getid3->info['comments_raw'][$i]['comment']   =                                   substr($info_riff[$riff_sub_type]['COMT'][0]['data'], $offset, $comment_length);
867
                        $offset += $comment_length;
868
869
                        $getid3->info['comments_raw'][$i]['timestamp_unix'] = getid3_riff::DateMac2Unix($getid3->info['comments_raw'][$i]['timestamp']);
870
                        $info_riff['comments']['comment'][] = $getid3->info['comments_raw'][$i]['comment'];
871
                    }
872
                }
873
874
                foreach (array ('NAME'=>'title', 'author'=>'artist', '(c) '=>'copyright', 'ANNO'=>'comment') as $key => $value) {
875
                    if (isset($info_riff[$riff_sub_type][$key][0]['data'])) {
876
                        $info_riff['comments'][$value][] = $info_riff[$riff_sub_type][$key][0]['data'];
877
                    }
878
                }
879
                break;
880
881
882
            case '8SVX':
883
                $info_audio['bitrate_mode']    = 'cbr';
884
                $info_audio_dataformat         = '8svx';
885
                $info_audio['bits_per_sample'] = 8;
886
                $info_audio['channels']        = 1; // overridden below, if need be
887
                $getid3->info['mime_type']     = 'audio/x-aiff';
888
889
                if (isset($info_riff[$riff_sub_type]['BODY'][0]['offset'])) {
890
                    $info_avdataoffset = $info_riff[$riff_sub_type]['BODY'][0]['offset'] + 8;
891
                    $info_avdataend    = $info_avdataoffset + $info_riff[$riff_sub_type]['BODY'][0]['size'];
892
                    if ($info_avdataend > $getid3->info['filesize']) {
893
                        $getid3->warning('Probable truncated AIFF file: expecting '.$info_riff[$riff_sub_type]['BODY'][0]['size'].' bytes of audio data, only '.($getid3->info['filesize'] - $info_avdataoffset).' bytes found');
894
                    }
895
                }
896
897
                if (isset($info_riff[$riff_sub_type]['VHDR'][0]['offset'])) {
898
                    // shortcut
899
                    $info_riff_riff_sub_type_vhdr_0 = &$info_riff[$riff_sub_type]['VHDR'][0];
900
901
                    getid3_lib::ReadSequence('BigEndian2Int', $info_riff_riff_sub_type_vhdr_0, $info_riff_riff_sub_type_vhdr_0['data'], 0, 
902
                        array (
903
                            'oneShotHiSamples'  => 4,
904
                            'repeatHiSamples'   => 4,
905
                            'samplesPerHiCycle' => 4,
906
                            'samplesPerSec'     => 2,
907
                            'ctOctave'          => 1,
908
                            'sCompression'      => 1,
909
                            'Volume'            => -4
910
                        )
911
                    );
912
                    
913
                    $info_riff_riff_sub_type_vhdr_0['Volume'] = getid3_riff::FixedPoint16_16($info_riff_riff_sub_type_vhdr_0['Volume']);
914
915
                    $info_audio['sample_rate'] = $info_riff_riff_sub_type_vhdr_0['samplesPerSec'];
916
917
                    switch ($info_riff_riff_sub_type_vhdr_0['sCompression']) {
918
                        case 0:
919
                            $info_audio['codec']    = 'Pulse Code Modulation (PCM)';
920
                            $info_audio['lossless'] = true;
921
                            $actual_bits_per_sample = 8;
922
                            break;
923
924
                        case 1:
925
                            $info_audio['codec']    = 'Fibonacci-delta encoding';
926
                            $info_audio['lossless'] = false;
927
                            $actual_bits_per_sample = 4;
928
                            break;
929
930
                        default:
931
                            $getid3->warning('Unexpected sCompression value in 8SVX.VHDR chunk - expecting 0 or 1, found "'.sCompression.'"');
0 ignored issues
show
Bug introduced by
The constant sCompression was not found. Maybe you did not declare it correctly or list all dependencies?
Loading history...
932
                            break;
933
                    }
934
                }
935
936
                if (isset($info_riff[$riff_sub_type]['CHAN'][0]['data'])) {
937
                    $ChannelsIndex = getid3_lib::BigEndian2Int(substr($info_riff[$riff_sub_type]['CHAN'][0]['data'], 0, 4));
938
                    switch ($ChannelsIndex) {
939
                        case 6: // Stereo
940
                            $info_audio['channels'] = 2;
941
                            break;
942
943
                        case 2: // Left channel only
944
                        case 4: // Right channel only
945
                            $info_audio['channels'] = 1;
946
                            break;
947
948
                        default:
949
                            $getid3->warning('Unexpected value in 8SVX.CHAN chunk - expecting 2 or 4 or 6, found "'.$ChannelsIndex.'"');
950
                            break;
951
                    }
952
953
                }
954
955
                foreach (array ('NAME'=>'title', 'author'=>'artist', '(c) '=>'copyright', 'ANNO'=>'comment') as $key => $value) {
956
                    if (isset($info_riff[$riff_sub_type][$key][0]['data'])) {
957
                        $info_riff['comments'][$value][] = $info_riff[$riff_sub_type][$key][0]['data'];
958
                    }
959
                }
960
961
                $info_audio['bitrate'] = $info_audio['sample_rate'] * $actual_bits_per_sample * $info_audio['channels'];
0 ignored issues
show
Comprehensibility Best Practice introduced by
The variable $actual_bits_per_sample does not seem to be defined for all execution paths leading up to this point.
Loading history...
962
                if (!empty($info_audio['bitrate'])) {
963
                    $getid3->info['playtime_seconds'] = ($info_avdataend - $info_avdataoffset) / ($info_audio['bitrate'] / 8);
964
                }
965
                break;
966
967
968
            case 'CDXA':
969
            
970
                $getid3->info['mime_type'] = 'video/mpeg';
971
                if (!empty($info_riff['CDXA']['data'][0]['size'])) {
972
                    $GETID3_ERRORARRAY = &$getid3->info['warning'];
0 ignored issues
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Unused Code introduced by
The assignment to $GETID3_ERRORARRAY is dead and can be removed.
Loading history...
973
                    
974
                    if (!$getid3->include_module_optional('audio-video.mpeg')) {
0 ignored issues
show
Bug Best Practice introduced by
The expression $getid3->include_module_...nal('audio-video.mpeg') of type null|true is loosely compared to false; this is ambiguous if the boolean can be false. You might want to explicitly use !== null instead.

If an expression can have both false, and null as possible values. It is generally a good practice to always use strict comparison to clearly distinguish between those two values.

$a = canBeFalseAndNull();

// Instead of
if ( ! $a) { }

// Better use one of the explicit versions:
if ($a !== null) { }
if ($a !== false) { }
if ($a !== null && $a !== false) { }
Loading history...
975
                        $getid3->warning('MPEG skipped because mpeg module is missing.');
976
                    }
977
                                        
978
                    else {
979
                        
980
                        // Clone getid3 - messing with offsets - better safe than sorry
981
                        $clone = clone $getid3;
982
                    
983
                        // Analyse
984
                        $mpeg = new getid3_mpeg($clone);
985
                        $mpeg->Analyze();
986
987
                        // Import from clone and destroy                            
988
                        $getid3->info['audio']   = $clone->info['audio'];
989
                        $getid3->info['video']   = $clone->info['video'];
990
                        $getid3->info['mpeg']    = $clone->info['mpeg'];
991
                        $getid3->info['warning'] = $clone->info['warning'];
992
993
                        unset($clone);
994
                    }
995
                }
996
                
997
                break;
998
999
1000
            default:
1001
                throw new getid3_exception('Unknown RIFF type: expecting one of (WAVE|RMP3|AVI |CDDA|AIFF|AIFC|8SVX|CDXA), found "'.$riff_sub_type.'" instead');
1002
        }
1003
        
1004
        
1005
        if (@$info_riff_raw['fmt ']['wFormatTag'] == 1) {
1006
                     
1007
            // http://www.mega-nerd.com/erikd/Blog/Windiots/dts.html
1008
            $this->fseek($getid3->info['avdataoffset'], SEEK_SET);
1009
            $bytes4 = $this->fread(4);
1010
            
1011
            // DTSWAV
1012
            if (preg_match('/^\xFF\x1F\x00\xE8/s', $bytes4)) {
1013
                $info_audio_dataformat = 'dts';
1014
            } 
1015
            
1016
            // DTS, but this probably shouldn't happen
1017
            elseif (preg_match('/^\x7F\xFF\x80\x01/s', $bytes4)) {
1018
                $info_audio_dataformat = 'dts';
1019
            }
1020
        }
1021
1022
        if (@is_array($info_riff_wave['DISP'])) {
1023
            $info_riff['comments']['title'][] = trim(substr($info_riff_wave['DISP'][count($info_riff_wave['DISP']) - 1]['data'], 4));
1024
        }
1025
        
1026
        if (@is_array($info_riff_wave['INFO'])) {
1027
			getid3_riff::RIFFCommentsParse($info_riff_wave['INFO'], $info_riff['comments']);
1028
		}
1029
		
1030
        if (isset($info_riff_wave['INFO']) && is_array($info_riff_wave['INFO'])) {
1031
            
1032
            foreach (array ('IARL' => 'archivallocation', 'IART' => 'artist', 'ICDS' => 'costumedesigner', 'ICMS' => 'commissionedby', 'ICMT' => 'comment', 'ICNT' => 'country', 'ICOP' => 'copyright', 'ICRD' => 'creationdate', 'IDIM' => 'dimensions', 'IDIT' => 'digitizationdate', 'IDPI' => 'resolution', 'IDST' => 'distributor', 'IEDT' => 'editor', 'IENG' => 'engineers', 'IFRM' => 'accountofparts', 'IGNR' => 'genre', 'IKEY' => 'keywords', 'ILGT' => 'lightness', 'ILNG' => 'language', 'IMED' => 'orignalmedium', 'IMUS' => 'composer', 'INAM' => 'title', 'IPDS' => 'productiondesigner', 'IPLT' => 'palette', 'IPRD' => 'product', 'IPRO' => 'producer', 'IPRT' => 'part', 'IRTD' => 'rating', 'ISBJ' => 'subject', 'ISFT' => 'software', 'ISGN' => 'secondarygenre', 'ISHP' => 'sharpness', 'ISRC' => 'sourcesupplier', 'ISRF' => 'digitizationsource', 'ISTD' => 'productionstudio', 'ISTR' => 'starring', 'ITCH' => 'encoded_by', 'IWEB' => 'url', 'IWRI' => 'writer') as $key => $value) {
1033
                if (isset($info_riff_wave['INFO'][$key])) {
1034
                    foreach ($info_riff_wave['INFO'][$key] as $comment_id => $comment_data) {
1035
                        if (trim($comment_data['data']) != '') {
1036
                            $info_riff['comments'][$value][] = trim($comment_data['data']);
1037
                        }
1038
                    }
1039
                }
1040
            }
1041
        }
1042
1043
        if (empty($info_audio['encoder']) && !empty($getid3->info['mpeg']['audio']['LAME']['short_version'])) {
1044
            $info_audio['encoder'] = $getid3->info['mpeg']['audio']['LAME']['short_version'];
1045
        }
1046
1047
        if (!isset($getid3->info['playtime_seconds'])) {
1048
            $getid3->info['playtime_seconds'] = 0;
1049
        }
1050
1051
        if (isset($info_riff_raw['avih']['dwTotalFrames']) && isset($info_riff_raw['avih']['dwMicroSecPerFrame'])) {
1052
            $getid3->info['playtime_seconds'] = $info_riff_raw['avih']['dwTotalFrames'] * ($info_riff_raw['avih']['dwMicroSecPerFrame'] / 1000000);
1053
        }
1054
1055
        if ($getid3->info['playtime_seconds'] > 0) {
1056
            if (isset($info_riff_audio) && isset($info_riff_video)) {
1057
1058
                if (!isset($getid3->info['bitrate'])) {
1059
                    $getid3->info['bitrate'] = ((($info_avdataend - $info_avdataoffset) / $getid3->info['playtime_seconds']) * 8);
1060
                }
1061
1062
            } elseif (isset($info_riff_audio) && !isset($info_riff_video)) {
1063
1064
                if (!isset($info_audio['bitrate'])) {
1065
                    $info_audio['bitrate'] = ((($info_avdataend - $info_avdataoffset) / $getid3->info['playtime_seconds']) * 8);
1066
                }
1067
1068
            } elseif (!isset($info_riff_audio) && isset($info_riff_video)) {
1069
1070
                if (!isset($info_video['bitrate'])) {
1071
                    $info_video['bitrate'] = ((($info_avdataend - $info_avdataoffset) / $getid3->info['playtime_seconds']) * 8);
1072
                }
1073
1074
            }
1075
        }
1076
1077
1078
        if (isset($info_riff_video) && isset($info_audio['bitrate']) && ($info_audio['bitrate'] > 0) && ($getid3->info['playtime_seconds'] > 0)) {
1079
1080
            $getid3->info['bitrate'] = ((($info_avdataend - $info_avdataoffset) / $getid3->info['playtime_seconds']) * 8);
1081
            $info_audio['bitrate'] = 0;
1082
            $info_video['bitrate'] = $getid3->info['bitrate'];
1083
            foreach ($info_riff_audio as $channelnumber => $audioinfoarray) {
1084
                $info_video['bitrate'] -= $audioinfoarray['bitrate'];
1085
                $info_audio['bitrate'] += $audioinfoarray['bitrate'];
1086
            }
1087
            if ($info_video['bitrate'] <= 0) {
1088
                unset($info_video['bitrate']);
1089
            }
1090
            if ($info_audio['bitrate'] <= 0) {
1091
                unset($info_audio['bitrate']);
1092
            }
1093
        }
1094
1095
        if (isset($getid3->info['mpeg']['audio'])) {
1096
            $info_audio_dataformat      = 'mp'.$getid3->info['mpeg']['audio']['layer'];
1097
            $info_audio['sample_rate']  = $getid3->info['mpeg']['audio']['sample_rate'];
1098
            $info_audio['channels']     = $getid3->info['mpeg']['audio']['channels'];
1099
            $info_audio['bitrate']      = $getid3->info['mpeg']['audio']['bitrate'];
1100
            $info_audio['bitrate_mode'] = strtolower($getid3->info['mpeg']['audio']['bitrate_mode']);
1101
1102
            if (!empty($getid3->info['mpeg']['audio']['codec'])) {
1103
                $info_audio['codec'] = $getid3->info['mpeg']['audio']['codec'].' '.$info_audio['codec'];
1104
            }
1105
1106
            if (!empty($info_audio['streams'])) {
1107
                foreach ($info_audio['streams'] as $streamnumber => $streamdata) {
1108
                    if ($streamdata['dataformat'] == $info_audio_dataformat) {
1109
                        $info_audio['streams'][$streamnumber]['sample_rate']  = $info_audio['sample_rate'];
1110
                        $info_audio['streams'][$streamnumber]['channels']     = $info_audio['channels'];
1111
                        $info_audio['streams'][$streamnumber]['bitrate']      = $info_audio['bitrate'];
1112
                        $info_audio['streams'][$streamnumber]['bitrate_mode'] = $info_audio['bitrate_mode'];
1113
                        $info_audio['streams'][$streamnumber]['codec']        = $info_audio['codec'];
1114
                    }
1115
                }
1116
            }
1117
            $info_audio['encoder_options'] = getid3_mp3::GuessEncoderOptions($getid3->info);
1118
        }
1119
1120
1121
        if (!empty($info_riff_raw['fmt ']['wBitsPerSample']) && ($info_riff_raw['fmt ']['wBitsPerSample'] > 0)) {
1122
            switch ($info_audio_dataformat) {
1123
                case 'ac3':
1124
                    // ignore bits_per_sample
1125
                    break;
1126
1127
                default:
1128
                    $info_audio['bits_per_sample'] = $info_riff_raw['fmt ']['wBitsPerSample'];
1129
                    break;
1130
            }
1131
        }
1132
1133
1134
        if (empty($info_riff_raw)) {
1135
            unset($info_riff['raw']);
1136
        }
1137
        if (empty($info_riff_audio)) {
1138
            unset($info_riff['audio']);
1139
        }
1140
        if (empty($info_riff_video)) {
1141
            unset($info_riff['video']);
1142
        }
1143
        if (empty($info_audio_dataformat)) {
1144
            unset($info_audio['dataformat']);
1145
        }
1146
        if (empty($getid3->info['audio'])) {
1147
            unset($getid3->info['audio']);
1148
        }
1149
        if (empty($info_video)) {
1150
            unset($getid3->info['video']);
1151
        }
1152
1153
        return true;
1154
    }
1155
1156
1157
1158
    public function ParseRIFF($start_offset, $max_offset) {
1159
                                                         
1160
        $getid3 = $this->getid3;
1161
        
1162
        $info   = &$getid3->info;
1163
        
1164
        $endian_function = $this->endian_function;
1165
1166
        $max_offset = min($max_offset, $info['avdataend']);
1167
        
1168
        $riff_chunk = false;
1169
1170
        $this->fseek($start_offset, SEEK_SET);
1171
        
1172
        while ($this->ftell() < $max_offset) {
1173
            
1174
            $chunk_name = $this->fread(4);
1175
            
1176
            if (strlen($chunk_name) < 4) {
1177
                throw new getid3_exception('Expecting chunk name at offset '.($this->ftell() - 4).' but found nothing. Aborting RIFF parsing.');
1178
            }
1179
            
1180
            $chunk_size = getid3_lib::$endian_function($this->fread(4));
1181
            
1182
            if ($chunk_size == 0) {
1183
                continue;
1184
                throw new getid3_exception('Chunk size at offset '.($this->ftell() - 4).' is zero. Aborting RIFF parsing.');
0 ignored issues
show
Unused Code introduced by
ThrowNode is not reachable.

This check looks for unreachable code. It uses sophisticated control flow analysis techniques to find statements which will never be executed.

Unreachable code is most often the result of return, die or exit statements that have been added for debug purposes.

function fx() {
    try {
        doSomething();
        return true;
    }
    catch (\Exception $e) {
        return false;
    }

    return false;
}

In the above example, the last return false will never be executed, because a return statement has already been met in every possible execution path.

Loading history...
1185
            }
1186
            
1187
            if (($chunk_size % 2) != 0) {
1188
                // all structures are packed on word boundaries
1189
                $chunk_size++;
1190
            }
1191
1192
            switch ($chunk_name) {
1193
1194
                case 'LIST':
1195
                    $list_name = $this->fread(4);
1196
                    
1197
                    switch ($list_name) {
1198
                    
1199
                        case 'movi':
1200
                        case 'rec ':
1201
                            $riff_chunk[$list_name]['offset'] = $this->ftell() - 4;
1202
                            $riff_chunk[$list_name]['size']   = $chunk_size;
1203
1204
                            static $parsed_audio_stream = false;
1205
                            
1206
                            if (!$parsed_audio_stream) {
1207
                                $where_we_were = $this->ftell();
1208
                                $audio_chunk_header = $this->fread(12);
1209
                                $audio_chunk_stream_num  =                             substr($audio_chunk_header, 0, 2);
0 ignored issues
show
Unused Code introduced by
The assignment to $audio_chunk_stream_num is dead and can be removed.
Loading history...
1210
                                $audio_chunk_stream_type =                             substr($audio_chunk_header, 2, 2);
1211
                                $audio_chunk_size       = getid3_lib::LittleEndian2Int(substr($audio_chunk_header, 4, 4));
1212
1213
                                if ($audio_chunk_stream_type == 'wb') {
1214
                                    $first_four_bytes = substr($audio_chunk_header, 8, 4);
1215
1216
                                    
1217
                                    //// MPEG
1218
                                    
1219
                                    if (preg_match('/^\xFF[\xE2-\xE7\xF2-\xF7\xFA-\xFF][\x00-\xEB]/s', $first_four_bytes)) {
1220
1221
                                        if (!$getid3->include_module_optional('audio.mp3')) {
0 ignored issues
show
Bug Best Practice introduced by
The expression $getid3->include_module_optional('audio.mp3') of type null|true is loosely compared to false; this is ambiguous if the boolean can be false. You might want to explicitly use !== null instead.

If an expression can have both false, and null as possible values. It is generally a good practice to always use strict comparison to clearly distinguish between those two values.

$a = canBeFalseAndNull();

// Instead of
if ( ! $a) { }

// Better use one of the explicit versions:
if ($a !== null) { }
if ($a !== false) { }
if ($a !== null && $a !== false) { }
Loading history...
1222
                                            $getid3->warning('MP3 skipped because mp3 module is missing.');
1223
                                        }
1224
                                        
1225
                                        elseif (getid3_mp3::MPEGaudioHeaderBytesValid($first_four_bytes)) {
1226
                                            
1227
                                            // Clone getid3 - messing with offsets - better safe than sorry
1228
                                            $clone = clone $getid3;
1229
                                            $clone->info['avdataoffset'] = $this->ftell() - 4;
1230
                                            $clone->info['avdataend']    = $this->ftell() + $audio_chunk_size;
1231
                                        
1232
                                            $mp3 = new getid3_mp3($clone);
1233
                                            $mp3->AnalyzeMPEGaudioInfo();
1234
                                            
1235
                                            // Import from clone and destroy
1236
                                            if (isset($clone->info['mpeg']['audio'])) {
1237
                                            
1238
                                                $info['mpeg']['audio'] = $clone->info['mpeg']['audio'];
1239
                                                
1240
                                                $info['audio']['dataformat']   = 'mp'.$info['mpeg']['audio']['layer'];
1241
                                                $info['audio']['sample_rate']  = $info['mpeg']['audio']['sample_rate'];
1242
                                                $info['audio']['channels']     = $info['mpeg']['audio']['channels'];
1243
                                                $info['audio']['bitrate']      = $info['mpeg']['audio']['bitrate'];
1244
                                                $info['audio']['bitrate_mode'] = strtolower($info['mpeg']['audio']['bitrate_mode']);
1245
                                                $info['bitrate']               = $info['audio']['bitrate'];
1246
                                                
1247
                                                $getid3->warning($clone->warnings());
1248
                                                unset($clone);
1249
                                            }
1250
                                        }
1251
                                    } 
1252
                                    
1253
                                    //// AC3-WAVE
1254
                                    
1255
                                    elseif (preg_match('/^\x0B\x77/s', $first_four_bytes)) {
1256
1257
                                        if (!$getid3->include_module_optional('audio.ac3')) {
0 ignored issues
show
Bug Best Practice introduced by
The expression $getid3->include_module_optional('audio.ac3') of type null|true is loosely compared to false; this is ambiguous if the boolean can be false. You might want to explicitly use !== null instead.

If an expression can have both false, and null as possible values. It is generally a good practice to always use strict comparison to clearly distinguish between those two values.

$a = canBeFalseAndNull();

// Instead of
if ( ! $a) { }

// Better use one of the explicit versions:
if ($a !== null) { }
if ($a !== false) { }
if ($a !== null && $a !== false) { }
Loading history...
1258
                                            $getid3->warning('AC3 skipped because ac3 module is missing.');
1259
                                        }
1260
                                        
1261
                                        else {
1262
        
1263
                                            // Clone getid3 - messing with offsets - better safe than sorry
1264
                                            $clone = clone $getid3;
1265
                                            $clone->info['avdataoffset'] = $this->ftell() - 4;                
1266
                                            $clone->info['avdataend']    = $this->ftell() + $audio_chunk_size;
1267
                                            
1268
                                            // Analyze clone by fp
1269
                                            $ac3 = new getid3_ac3($clone);
1270
                                            $ac3->Analyze();
1271
                                            
1272
                                            // Import from clone and destroy
1273
                                            $info['audio'] = $clone->info['audio'];
1274
                                            $info['ac3']   = $clone->info['ac3'];
1275
                                            $getid3->warning($clone->warnings());
1276
                                            unset($clone);
1277
                                        }
1278
                                    }
1279
                                }
1280
1281
                                $parsed_audio_stream = true;
1282
                                $this->fseek($where_we_were, SEEK_SET);
1283
1284
                            }
1285
                            $this->fseek($chunk_size - 4, SEEK_CUR);
1286
                            break;
1287
1288
                        default:
1289
                            if (!isset($riff_chunk[$list_name])) {
1290
                                $riff_chunk[$list_name] = array ();
1291
                            }
1292
                            $list_chunk_parent    = $list_name;
1293
                            $list_chunk_max_offset = $this->ftell() - 4 + $chunk_size;
1294
                            if ($parsed_chunk = $this->ParseRIFF($this->ftell(), $this->ftell() + $chunk_size - 4)) {
1295
                                $riff_chunk[$list_name] = array_merge_recursive($riff_chunk[$list_name], $parsed_chunk);
1296
                            }
1297
                            break;
1298
                    }
1299
                    break;
1300
1301
1302
                default:
1303
                
1304
                    $this_index = 0;
1305
                    if (isset($riff_chunk[$chunk_name]) && is_array($riff_chunk[$chunk_name])) {
1306
                        $this_index = count($riff_chunk[$chunk_name]);
1307
                    }
1308
                    $riff_chunk[$chunk_name][$this_index]['offset'] = $this->ftell() - 8;
1309
                    $riff_chunk[$chunk_name][$this_index]['size']   = $chunk_size;
1310
                    switch ($chunk_name) {
1311
                        case 'data':
1312
                            $info['avdataoffset'] = $this->ftell();
1313
                            $info['avdataend']    = $info['avdataoffset'] + $chunk_size;
1314
1315
                            $riff_data_chunk_contents_test = $this->fread(36);
1316
1317
1318
                            //// This is probably MP3 data
1319
1320
                            if ((strlen($riff_data_chunk_contents_test) > 0) && preg_match('/^\xFF[\xE2-\xE7\xF2-\xF7\xFA-\xFF][\x00-\xEB]/s', substr($riff_data_chunk_contents_test, 0, 4))) {
1321
                                
1322
                                try {
1323
                                
1324
                                    if (!$getid3->include_module_optional('audio.mp3')) {
0 ignored issues
show
Bug Best Practice introduced by
The expression $getid3->include_module_optional('audio.mp3') of type null|true is loosely compared to false; this is ambiguous if the boolean can be false. You might want to explicitly use !== null instead.

If an expression can have both false, and null as possible values. It is generally a good practice to always use strict comparison to clearly distinguish between those two values.

$a = canBeFalseAndNull();

// Instead of
if ( ! $a) { }

// Better use one of the explicit versions:
if ($a !== null) { }
if ($a !== false) { }
if ($a !== null && $a !== false) { }
Loading history...
1325
                                        $getid3->warning('MP3 skipped because mp3 module is missing.');
1326
                                    }
1327
    
1328
                                    
1329
                                    // Clone getid3 - messing with offsets - better safe than sorry
1330
                                    $clone = clone $getid3;
1331
                                    
1332
                                    if (getid3_mp3::MPEGaudioHeaderBytesValid(substr($riff_data_chunk_contents_test, 0, 4))) {
1333
                                    
1334
                                        $mp3 = new getid3_mp3($clone);
1335
                                        $mp3->AnalyzeMPEGaudioInfo();
1336
                                        
1337
                                        // Import from clone and destroy
1338
                                        if (isset($clone->info['mpeg']['audio'])) {
1339
                                        
1340
                                            $info['mpeg']['audio'] = $clone->info['mpeg']['audio'];
1341
                                            
1342
                                            $info['audio']['sample_rate']  = $info['mpeg']['audio']['sample_rate'];
1343
                                            $info['audio']['channels']     = $info['mpeg']['audio']['channels'];
1344
                                            $info['audio']['bitrate']      = $info['mpeg']['audio']['bitrate'];
1345
                                            $info['audio']['bitrate_mode'] = strtolower($info['mpeg']['audio']['bitrate_mode']);
1346
                                            $info['bitrate']               = $info['audio']['bitrate'];
1347
                                            
1348
                                            $getid3->warning($clone->warnings());
1349
                                            unset($clone);
1350
                                        }
1351
                                    }
1352
                                }
1353
                                catch (Exception $e) {
1354
                                    // do nothing - not MP3 data
1355
                                }
1356
                            } 
1357
                            
1358
                        
1359
                            //// This is probably AC-3 data
1360
                            
1361
                            elseif ((strlen($riff_data_chunk_contents_test) > 0) && (substr($riff_data_chunk_contents_test, 0, 2) == "\x0B\x77")) {
1362
1363
                                if (!$getid3->include_module_optional('audio.ac3')) {
0 ignored issues
show
Bug Best Practice introduced by
The expression $getid3->include_module_optional('audio.ac3') of type null|true is loosely compared to false; this is ambiguous if the boolean can be false. You might want to explicitly use !== null instead.

If an expression can have both false, and null as possible values. It is generally a good practice to always use strict comparison to clearly distinguish between those two values.

$a = canBeFalseAndNull();

// Instead of
if ( ! $a) { }

// Better use one of the explicit versions:
if ($a !== null) { }
if ($a !== false) { }
if ($a !== null && $a !== false) { }
Loading history...
1364
                                    $getid3->warning('AC3 skipped because ac3 module is missing.');
1365
                                }
1366
                                
1367
                                else {
1368
1369
                                    // Clone getid3 - messing with offsets - better safe than sorry
1370
                                    $clone = clone $getid3;
1371
                                    $clone->info['avdataoffset'] = $riff_chunk[$chunk_name][$this_index]['offset'];
1372
                                    $clone->info['avdataend']    = $clone->info['avdataoffset'] + $riff_chunk[$chunk_name][$this_index]['size'];
1373
                                    
1374
                                    // Analyze clone by fp
1375
                                    $ac3 = new getid3_ac3($clone);
1376
                                    $ac3->Analyze();
1377
                                    
1378
                                    // Import from clone and destroy
1379
                                    $info['audio'] = $clone->info['audio'];
1380
                                    $info['ac3']   = $clone->info['ac3'];
1381
                                    $getid3->warning($clone->warnings());
1382
                                    unset($clone);
1383
                                }
1384
                            } 
1385
                        
1386
                        
1387
                            // Dolby Digital WAV
1388
                            // AC-3 content, but not encoded in same format as normal AC-3 file
1389
                            // For one thing, byte order is swapped
1390
                        
1391
                            elseif ((strlen($riff_data_chunk_contents_test) > 0) && (substr($riff_data_chunk_contents_test, 8, 2) == "\x77\x0B")) {
1392
1393
                                if (!$getid3->include_module_optional('audio.ac3')) {
0 ignored issues
show
Bug Best Practice introduced by
The expression $getid3->include_module_optional('audio.ac3') of type null|true is loosely compared to false; this is ambiguous if the boolean can be false. You might want to explicitly use !== null instead.

If an expression can have both false, and null as possible values. It is generally a good practice to always use strict comparison to clearly distinguish between those two values.

$a = canBeFalseAndNull();

// Instead of
if ( ! $a) { }

// Better use one of the explicit versions:
if ($a !== null) { }
if ($a !== false) { }
if ($a !== null && $a !== false) { }
Loading history...
1394
                                    $getid3->warning('AC3 skipped because ac3 module is missing.');
1395
                                }
1396
                                
1397
                                else {
1398
                                    
1399
                                    // Extract ac3 data to string
1400
                                    $ac3_data = '';                                
1401
                                    for ($i = 0; $i < 28; $i += 2) {
1402
                                        // swap byte order
1403
                                        $ac3_data .= substr($riff_data_chunk_contents_test, 8 + $i + 1, 1);
1404
                                        $ac3_data .= substr($riff_data_chunk_contents_test, 8 + $i + 0, 1);
1405
                                    }
1406
        
1407
                                    // Clone getid3 - messing with offsets - better safe than sorry
1408
                                    $clone = clone $getid3;
1409
                                    $clone->info['avdataoffset'] = 0;
1410
                                    $clone->info['avdataend']    = 20;
1411
                                    
1412
                                    // Analyse clone by string
1413
                                    $ac3 = new getid3_ac3($clone);
1414
                                    $ac3->AnalyzeString($ac3_data);
1415
                                    
1416
                                    // Import from clone and destroy
1417
                                    $info['audio'] = $clone->info['audio'];
1418
                                    $info['ac3']   = $clone->info['ac3'];
1419
                                    $getid3->warning($clone->warnings());
1420
                                    unset($clone);
1421
                                }
1422
                            }
1423
1424
                                    
1425
                            if ((strlen($riff_data_chunk_contents_test) > 0) && (substr($riff_data_chunk_contents_test, 0, 4) == 'wvpk')) {
1426
1427
                                // This is WavPack data
1428
                                $info['wavpack']['offset'] = $riff_chunk[$chunk_name][$this_index]['offset'];
1429
                                $info['wavpack']['size']   = getid3_lib::LittleEndian2Int(substr($riff_data_chunk_contents_test, 4, 4));
1430
                                $this->RIFFparseWavPackHeader(substr($riff_data_chunk_contents_test, 8, 28));
1431
1432
                            } else {
1433
1434
                                // This is some other kind of data (quite possibly just PCM)
1435
                                // do nothing special, just skip it
1436
1437
                            }
1438
                            $this->fseek($riff_chunk[$chunk_name][$this_index]['offset'] + 8 + $chunk_size, SEEK_SET);
1439
                            break;
1440
1441
                        case 'bext':
1442
                        case 'cart':
1443
                        case 'fmt ':
1444
                        case 'MEXT':
1445
                        case 'DISP':
1446
                            // always read data in
1447
                            $riff_chunk[$chunk_name][$this_index]['data'] = $this->fread($chunk_size);
1448
                            break;
1449
1450
                        default:
1451
                            if (!empty($list_chunk_parent) && (($riff_chunk[$chunk_name][$this_index]['offset'] + $riff_chunk[$chunk_name][$this_index]['size']) <= $list_chunk_max_offset)) {
0 ignored issues
show
Comprehensibility Best Practice introduced by
The variable $list_chunk_max_offset does not seem to be defined for all execution paths leading up to this point.
Loading history...
1452
                                $riff_chunk[$list_chunk_parent][$chunk_name][$this_index]['offset'] = $riff_chunk[$chunk_name][$this_index]['offset'];
1453
                                $riff_chunk[$list_chunk_parent][$chunk_name][$this_index]['size']   = $riff_chunk[$chunk_name][$this_index]['size'];
1454
                                unset($riff_chunk[$chunk_name][$this_index]['offset']);
1455
                                unset($riff_chunk[$chunk_name][$this_index]['size']);
1456
                                if (isset($riff_chunk[$chunk_name][$this_index]) && empty($riff_chunk[$chunk_name][$this_index])) {
1457
                                    unset($riff_chunk[$chunk_name][$this_index]);
1458
                                }
1459
                                if (isset($riff_chunk[$chunk_name]) && empty($riff_chunk[$chunk_name])) {
1460
                                    unset($riff_chunk[$chunk_name]);
1461
                                }
1462
                                $riff_chunk[$list_chunk_parent][$chunk_name][$this_index]['data'] = $this->fread($chunk_size);
1463
                            } elseif ($chunk_size < 2048) {
1464
                                // only read data in if smaller than 2kB
1465
                                $riff_chunk[$chunk_name][$this_index]['data'] = $this->fread($chunk_size);
1466
                            } else {
1467
                                $this->fseek($chunk_size, SEEK_CUR);
1468
                            }
1469
                            break;
1470
                    }
1471
                    break;
1472
1473
            }
1474
1475
        }
1476
1477
        return $riff_chunk;
1478
    }
1479
1480
1481
1482
    private function RIFFparseWavPackHeader($wavpack3_chunk_data) {
1483
        
1484
        // typedef struct {
1485
        //     char ckID [4];
1486
        //     long ckSize;
1487
        //     short version;
1488
        //     short bits;                // added for version 2.00
1489
        //     short flags, shift;        // added for version 3.00
1490
        //     long total_samples, crc, crc2;
1491
        //     char extension [4], extra_bc, extras [3];
1492
        // } WavpackHeader;
1493
1494
        $this->getid3->info['wavpack'] = array ();
1495
        $info_wavpack = &$this->getid3->info['wavpack'];
1496
1497
        $info_wavpack['version'] = getid3_lib::LittleEndian2Int(substr($wavpack3_chunk_data,  0, 2));
1498
        
1499
        if ($info_wavpack['version'] >= 2) {
1500
            $info_wavpack['bits'] = getid3_lib::LittleEndian2Int(substr($wavpack3_chunk_data,  2, 2));
1501
        }
1502
        
1503
        if ($info_wavpack['version'] >= 3) {
1504
            
1505
            getid3_lib::ReadSequence('LittleEndian2Int', $info_wavpack, $wavpack3_chunk_data,  4,
1506
                array (
1507
                    'flags_raw'     => 2,
1508
                    'shift'         => 2,
1509
                    'total_samples' => 4,
1510
                    'crc1'          => 4,
1511
                    'crc2'          => 4,
1512
                    'extension'     => -4,
1513
                    'extra_bc'      => 1
1514
                )
1515
            );
1516
            
1517
            for ($i = 0; $i < 3; $i++) {
1518
                $info_wavpack['extras'][] = getid3_lib::LittleEndian2Int($wavpack3_chunk_data{25 + $i});
1519
            }
1520
1521
            $info_wavpack['flags'] = array ();
1522
            $info_wavpack_flags = &$info_wavpack['flags'];
1523
1524
            $info_wavpack_flags['mono']                 = (bool)($info_wavpack['flags_raw'] & 0x000001);
1525
            $info_wavpack_flags['fast_mode']            = (bool)($info_wavpack['flags_raw'] & 0x000002);
1526
            $info_wavpack_flags['raw_mode']             = (bool)($info_wavpack['flags_raw'] & 0x000004);
1527
            $info_wavpack_flags['calc_noise']           = (bool)($info_wavpack['flags_raw'] & 0x000008);
1528
            $info_wavpack_flags['high_quality']         = (bool)($info_wavpack['flags_raw'] & 0x000010);
1529
            $info_wavpack_flags['3_byte_samples']       = (bool)($info_wavpack['flags_raw'] & 0x000020);
1530
            $info_wavpack_flags['over_20_bits']         = (bool)($info_wavpack['flags_raw'] & 0x000040);
1531
            $info_wavpack_flags['use_wvc']              = (bool)($info_wavpack['flags_raw'] & 0x000080);
1532
            $info_wavpack_flags['noiseshaping']         = (bool)($info_wavpack['flags_raw'] & 0x000100);
1533
            $info_wavpack_flags['very_fast_mode']       = (bool)($info_wavpack['flags_raw'] & 0x000200);
1534
            $info_wavpack_flags['new_high_quality']     = (bool)($info_wavpack['flags_raw'] & 0x000400);
1535
            $info_wavpack_flags['cancel_extreme']       = (bool)($info_wavpack['flags_raw'] & 0x000800);
1536
            $info_wavpack_flags['cross_decorrelation']  = (bool)($info_wavpack['flags_raw'] & 0x001000);
1537
            $info_wavpack_flags['new_decorrelation']    = (bool)($info_wavpack['flags_raw'] & 0x002000);
1538
            $info_wavpack_flags['joint_stereo']         = (bool)($info_wavpack['flags_raw'] & 0x004000);
1539
            $info_wavpack_flags['extra_decorrelation']  = (bool)($info_wavpack['flags_raw'] & 0x008000);
1540
            $info_wavpack_flags['override_noiseshape']  = (bool)($info_wavpack['flags_raw'] & 0x010000);
1541
            $info_wavpack_flags['override_jointstereo'] = (bool)($info_wavpack['flags_raw'] & 0x020000);
1542
            $info_wavpack_flags['copy_source_filetime'] = (bool)($info_wavpack['flags_raw'] & 0x040000);
1543
            $info_wavpack_flags['create_exe']           = (bool)($info_wavpack['flags_raw'] & 0x080000);
1544
        }
1545
1546
        return true;
1547
    }
1548
    
1549
    
1550
    
1551
    public function AnalyzeString(&$string) {
1552
        
1553
		// Rewrite header_size in header
1554
		$new_header_size = getid3_lib::LittleEndian2String(strlen($string), 4);
1555
		for ($i = 0; $i < 4; $i++) {
1556
			$string{$i + 4} = $new_header_size{$i};
1557
		}
1558
		
1559
		return parent::AnalyzeString($string);
0 ignored issues
show
Bug introduced by
Are you sure the usage of parent::AnalyzeString($string) targeting getid3_handler::AnalyzeString() seems to always return null.

This check looks for function or method calls that always return null and whose return value is used.

class A
{
    function getObject()
    {
        return null;
    }

}

$a = new A();
if ($a->getObject()) {

The method getObject() can return nothing but null, so it makes no sense to use the return value.

The reason is most likely that a function or method is imcomplete or has been reduced for debug purposes.

Loading history...
1560
	}
1561
1562
1563
        
1564
    public static function RIFFparseWAVEFORMATex($wave_format_ex_data) {
1565
        
1566
        $wave_format_ex['raw'] = array ();
0 ignored issues
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Comprehensibility Best Practice introduced by
$wave_format_ex was never initialized. Although not strictly required by PHP, it is generally a good practice to add $wave_format_ex = array(); before regardless.
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1567
        $wave_format_ex_raw    = &$wave_format_ex['raw'];
1568
        
1569
        getid3_lib::ReadSequence('LittleEndian2Int', $wave_format_ex_raw, $wave_format_ex_data, 0,
1570
            array (
1571
                'wFormatTag'      => 2,
1572
                'nChannels'       => 2,
1573
                'nSamplesPerSec'  => 4,
1574
                'nAvgBytesPerSec' => 4,
1575
                'nBlockAlign'     => 2,
1576
                'wBitsPerSample'  => 2
1577
            )
1578
        );
1579
                
1580
        if (strlen($wave_format_ex_data) > 16) {
1581
            $wave_format_ex_raw['cbSize'] = getid3_lib::LittleEndian2Int(substr($wave_format_ex_data, 16, 2));
1582
        }
1583
1584
        $wave_format_ex['codec']           = getid3_riff::RIFFwFormatTagLookup($wave_format_ex_raw['wFormatTag']);
1585
        $wave_format_ex['channels']        = $wave_format_ex_raw['nChannels'];
1586
        $wave_format_ex['sample_rate']     = $wave_format_ex_raw['nSamplesPerSec'];
1587
        $wave_format_ex['bitrate']         = $wave_format_ex_raw['nAvgBytesPerSec'] * 8;
1588
        if (@$wave_format_ex_raw['wBitsPerSample']) {
1589
            $wave_format_ex['bits_per_sample'] = $wave_format_ex_raw['wBitsPerSample'];
1590
        }
1591
1592
        return $wave_format_ex;
1593
    }
1594
1595
1596
1597
    public static function RIFFwFormatTagLookup($w_format_tag) {
1598
1599
        static $lookup = array (
1600
            0x0000 => 'Microsoft Unknown Wave Format',
1601
            0x0001 => 'Pulse Code Modulation (PCM)',
1602
            0x0002 => 'Microsoft ADPCM',
1603
            0x0003 => 'IEEE Float',
1604
            0x0004 => 'Compaq Computer VSELP',
1605
            0x0005 => 'IBM CVSD',
1606
            0x0006 => 'Microsoft A-Law',
1607
            0x0007 => 'Microsoft mu-Law',
1608
            0x0008 => 'Microsoft DTS',
1609
            0x0010 => 'OKI ADPCM',
1610
            0x0011 => 'Intel DVI/IMA ADPCM',
1611
            0x0012 => 'Videologic MediaSpace ADPCM',
1612
            0x0013 => 'Sierra Semiconductor ADPCM',
1613
            0x0014 => 'Antex Electronics G.723 ADPCM',
1614
            0x0015 => 'DSP Solutions DigiSTD',
1615
            0x0016 => 'DSP Solutions DigiFIX',
1616
            0x0017 => 'Dialogic OKI ADPCM',
1617
            0x0018 => 'MediaVision ADPCM',
1618
            0x0019 => 'Hewlett-Packard CU',
1619
            0x0020 => 'Yamaha ADPCM',
1620
            0x0021 => 'Speech Compression Sonarc',
1621
            0x0022 => 'DSP Group TrueSpeech',
1622
            0x0023 => 'Echo Speech EchoSC1',
1623
            0x0024 => 'Audiofile AF36',
1624
            0x0025 => 'Audio Processing Technology APTX',
1625
            0x0026 => 'AudioFile AF10',
1626
            0x0027 => 'Prosody 1612',
1627
            0x0028 => 'LRC',
1628
            0x0030 => 'Dolby AC2',
1629
            0x0031 => 'Microsoft GSM 6.10',
1630
            0x0032 => 'MSNAudio',
1631
            0x0033 => 'Antex Electronics ADPCME',
1632
            0x0034 => 'Control Resources VQLPC',
1633
            0x0035 => 'DSP Solutions DigiREAL',
1634
            0x0036 => 'DSP Solutions DigiADPCM',
1635
            0x0037 => 'Control Resources CR10',
1636
            0x0038 => 'Natural MicroSystems VBXADPCM',
1637
            0x0039 => 'Crystal Semiconductor IMA ADPCM',
1638
            0x003A => 'EchoSC3',
1639
            0x003B => 'Rockwell ADPCM',
1640
            0x003C => 'Rockwell Digit LK',
1641
            0x003D => 'Xebec',
1642
            0x0040 => 'Antex Electronics G.721 ADPCM',
1643
            0x0041 => 'G.728 CELP',
1644
            0x0042 => 'MSG723',
1645
            0x0050 => 'MPEG Layer-2 or Layer-1',
1646
            0x0052 => 'RT24',
1647
            0x0053 => 'PAC',
1648
            0x0055 => 'MPEG Layer-3',
1649
            0x0059 => 'Lucent G.723',
1650
            0x0060 => 'Cirrus',
1651
            0x0061 => 'ESPCM',
1652
            0x0062 => 'Voxware',
1653
            0x0063 => 'Canopus Atrac',
1654
            0x0064 => 'G.726 ADPCM',
1655
            0x0065 => 'G.722 ADPCM',
1656
            0x0066 => 'DSAT',
1657
            0x0067 => 'DSAT Display',
1658
            0x0069 => 'Voxware Byte Aligned',
1659
            0x0070 => 'Voxware AC8',
1660
            0x0071 => 'Voxware AC10',
1661
            0x0072 => 'Voxware AC16',
1662
            0x0073 => 'Voxware AC20',
1663
            0x0074 => 'Voxware MetaVoice',
1664
            0x0075 => 'Voxware MetaSound',
1665
            0x0076 => 'Voxware RT29HW',
1666
            0x0077 => 'Voxware VR12',
1667
            0x0078 => 'Voxware VR18',
1668
            0x0079 => 'Voxware TQ40',
1669
            0x0080 => 'Softsound',
1670
            0x0081 => 'Voxware TQ60',
1671
            0x0082 => 'MSRT24',
1672
            0x0083 => 'G.729A',
1673
            0x0084 => 'MVI MV12',
1674
            0x0085 => 'DF G.726',
1675
            0x0086 => 'DF GSM610',
1676
            0x0088 => 'ISIAudio',
1677
            0x0089 => 'Onlive',
1678
            0x0091 => 'SBC24',
1679
            0x0092 => 'Dolby AC3 SPDIF',
1680
            0x0093 => 'MediaSonic G.723',
1681
            0x0094 => 'Aculab PLC    Prosody 8kbps',
1682
            0x0097 => 'ZyXEL ADPCM',
1683
            0x0098 => 'Philips LPCBB',
1684
            0x0099 => 'Packed',
1685
            0x00FF => 'AAC',
1686
            0x0100 => 'Rhetorex ADPCM',
1687
            0x0101 => 'IBM mu-law',
1688
            0x0102 => 'IBM A-law',
1689
            0x0103 => 'IBM AVC Adaptive Differential Pulse Code Modulation (ADPCM)',
1690
            0x0111 => 'Vivo G.723',
1691
            0x0112 => 'Vivo Siren',
1692
            0x0123 => 'Digital G.723',
1693
            0x0125 => 'Sanyo LD ADPCM',
1694
            0x0130 => 'Sipro Lab Telecom ACELP NET',
1695
            0x0131 => 'Sipro Lab Telecom ACELP 4800',
1696
            0x0132 => 'Sipro Lab Telecom ACELP 8V3',
1697
            0x0133 => 'Sipro Lab Telecom G.729',
1698
            0x0134 => 'Sipro Lab Telecom G.729A',
1699
            0x0135 => 'Sipro Lab Telecom Kelvin',
1700
            0x0140 => 'Windows Media Video V8',
1701
            0x0150 => 'Qualcomm PureVoice',
1702
            0x0151 => 'Qualcomm HalfRate',
1703
            0x0155 => 'Ring Zero Systems TUB GSM',
1704
            0x0160 => 'Microsoft Audio 1',
1705
            0x0161 => 'Windows Media Audio V7 / V8 / V9',
1706
            0x0162 => 'Windows Media Audio Professional V9',
1707
            0x0163 => 'Windows Media Audio Lossless V9',
1708
            0x0200 => 'Creative Labs ADPCM',
1709
            0x0202 => 'Creative Labs Fastspeech8',
1710
            0x0203 => 'Creative Labs Fastspeech10',
1711
            0x0210 => 'UHER Informatic GmbH ADPCM',
1712
            0x0220 => 'Quarterdeck',
1713
            0x0230 => 'I-link Worldwide VC',
1714
            0x0240 => 'Aureal RAW Sport',
1715
            0x0250 => 'Interactive Products HSX',
1716
            0x0251 => 'Interactive Products RPELP',
1717
            0x0260 => 'Consistent Software CS2',
1718
            0x0270 => 'Sony SCX',
1719
            0x0300 => 'Fujitsu FM Towns Snd',
1720
            0x0400 => 'BTV Digital',
1721
            0x0401 => 'Intel Music Coder',
1722
            0x0450 => 'QDesign Music',
1723
            0x0680 => 'VME VMPCM',
1724
            0x0681 => 'AT&T Labs TPC',
1725
            0x08AE => 'ClearJump LiteWave',
1726
            0x1000 => 'Olivetti GSM',
1727
            0x1001 => 'Olivetti ADPCM',
1728
            0x1002 => 'Olivetti CELP',
1729
            0x1003 => 'Olivetti SBC',
1730
            0x1004 => 'Olivetti OPR',
1731
            0x1100 => 'Lernout & Hauspie Codec (0x1100)',
1732
            0x1101 => 'Lernout & Hauspie CELP Codec (0x1101)',
1733
            0x1102 => 'Lernout & Hauspie SBC Codec (0x1102)',
1734
            0x1103 => 'Lernout & Hauspie SBC Codec (0x1103)',
1735
            0x1104 => 'Lernout & Hauspie SBC Codec (0x1104)',
1736
            0x1400 => 'Norris',
1737
            0x1401 => 'AT&T ISIAudio',
1738
            0x1500 => 'Soundspace Music Compression',
1739
            0x181C => 'VoxWare RT24 Speech',
1740
            0x1FC4 => 'NCT Soft ALF2CD (www.nctsoft.com)',
1741
            0x2000 => 'Dolby AC3',
1742
            0x2001 => 'Dolby DTS',
1743
            0x2002 => 'WAVE_FORMAT_14_4',
1744
            0x2003 => 'WAVE_FORMAT_28_8',
1745
            0x2004 => 'WAVE_FORMAT_COOK',
1746
            0x2005 => 'WAVE_FORMAT_DNET',
1747
            0x674F => 'Ogg Vorbis 1',
1748
            0x6750 => 'Ogg Vorbis 2',
1749
            0x6751 => 'Ogg Vorbis 3',
1750
            0x676F => 'Ogg Vorbis 1+',
1751
            0x6770 => 'Ogg Vorbis 2+',
1752
            0x6771 => 'Ogg Vorbis 3+',
1753
            0x7A21 => 'GSM-AMR (CBR, no SID)',
1754
            0x7A22 => 'GSM-AMR (VBR, including SID)',
1755
            0xFFFE => 'WAVE_FORMAT_EXTENSIBLE',
1756
            0xFFFF => 'WAVE_FORMAT_DEVELOPMENT'
1757
        );
1758
        
1759
        return @$lookup[$w_format_tag];
1760
    }
1761
1762
1763
1764
    public static function RIFFfourccLookup($four_cc) {
1765
1766
        static $lookup = array (
1767
            'swot' => 'http://developer.apple.com/qa/snd/snd07.html',
1768
            '____' => 'No Codec (____)',
1769
            '_BIT' => 'BI_BITFIELDS (Raw RGB)',
1770
            '_JPG' => 'JPEG compressed',
1771
            '_PNG' => 'PNG compressed W3C/ISO/IEC (RFC-2083)',
1772
            '_RAW' => 'Full Frames (Uncompressed)',
1773
            '_RGB' => 'Raw RGB Bitmap',
1774
            '_RL4' => 'RLE 4bpp RGB',
1775
            '_RL8' => 'RLE 8bpp RGB',
1776
            '3IV1' => '3ivx MPEG-4 v1',
1777
            '3IV2' => '3ivx MPEG-4 v2',
1778
            '3IVX' => '3ivx MPEG-4',
1779
            'AASC' => 'Autodesk Animator',
1780
            'ABYR' => 'Kensington ?ABYR?',
1781
            'AEMI' => 'Array Microsystems VideoONE MPEG1-I Capture',
1782
            'AFLC' => 'Autodesk Animator FLC',
1783
            'AFLI' => 'Autodesk Animator FLI',
1784
            'AMPG' => 'Array Microsystems VideoONE MPEG',
1785
            'ANIM' => 'Intel RDX (ANIM)',
1786
            'AP41' => 'AngelPotion Definitive',
1787
            'ASV1' => 'Asus Video v1',
1788
            'ASV2' => 'Asus Video v2',
1789
            'ASVX' => 'Asus Video 2.0 (audio)',
1790
            'AUR2' => 'AuraVision Aura 2 Codec - YUV 4:2:2',
1791
            'AURA' => 'AuraVision Aura 1 Codec - YUV 4:1:1',
1792
            'AVDJ' => 'Independent JPEG Group\'s codec (AVDJ)',
1793
            'AVRN' => 'Independent JPEG Group\'s codec (AVRN)',
1794
            'AYUV' => '4:4:4 YUV (AYUV)',
1795
            'AZPR' => 'Quicktime Apple Video (AZPR)',
1796
            'BGR ' => 'Raw RGB32',
1797
            'BLZ0' => 'FFmpeg MPEG-4',
1798
            'BTVC' => 'Conexant Composite Video',
1799
            'BINK' => 'RAD Game Tools Bink Video',
1800
            'BT20' => 'Conexant Prosumer Video',
1801
            'BTCV' => 'Conexant Composite Video Codec',
1802
            'BW10' => 'Data Translation Broadway MPEG Capture',
1803
            'CC12' => 'Intel YUV12',
1804
            'CDVC' => 'Canopus DV',
1805
            'CFCC' => 'Digital Processing Systems DPS Perception',
1806
            'CGDI' => 'Microsoft Office 97 Camcorder Video',
1807
            'CHAM' => 'Winnov Caviara Champagne',
1808
            'CJPG' => 'Creative WebCam JPEG',
1809
            'CLJR' => 'Cirrus Logic YUV 4:1:1',
1810
            'CMYK' => 'Common Data Format in Printing (Colorgraph)',
1811
            'CPLA' => 'Weitek 4:2:0 YUV Planar',
1812
            'CRAM' => 'Microsoft Video 1 (CRAM)',
1813
            'cvid' => 'Radius Cinepak',
1814
            'CVID' => 'Radius Cinepak',
1815
            'CWLT' => 'Microsoft Color WLT DIB',
1816
            'CYUV' => 'Creative Labs YUV',
1817
            'CYUY' => 'ATI YUV',
1818
            'D261' => 'H.261',
1819
            'D263' => 'H.263',
1820
            'DIB ' => 'Device Independent Bitmap',
1821
            'DIV1' => 'FFmpeg OpenDivX',
1822
            'DIV2' => 'Microsoft MPEG-4 v1/v2',
1823
            'DIV3' => 'DivX ;-) MPEG-4 v3.x Low-Motion',
1824
            'DIV4' => 'DivX ;-) MPEG-4 v3.x Fast-Motion',
1825
            'DIV5' => 'DivX MPEG-4 v5.x',
1826
            'DIV6' => 'DivX ;-) (MS MPEG-4 v3.x)',
1827
            'DIVX' => 'DivX MPEG-4 v4 (OpenDivX / Project Mayo)',
1828
            'divx' => 'DivX MPEG-4',
1829
            'DMB1' => 'Matrox Rainbow Runner hardware MJPEG',
1830
            'DMB2' => 'Paradigm MJPEG',
1831
            'DSVD' => '?DSVD?',
1832
            'DUCK' => 'Duck TrueMotion 1.0',
1833
            'DPS0' => 'DPS/Leitch Reality Motion JPEG',
1834
            'DPSC' => 'DPS/Leitch PAR Motion JPEG',
1835
            'DV25' => 'Matrox DVCPRO codec',
1836
            'DV50' => 'Matrox DVCPRO50 codec',
1837
            'DVC ' => 'IEC 61834 and SMPTE 314M (DVC/DV Video)',
1838
            'DVCP' => 'IEC 61834 and SMPTE 314M (DVC/DV Video)',
1839
            'DVHD' => 'IEC Standard DV 1125 lines @ 30fps / 1250 lines @ 25fps',
1840
            'DVMA' => 'Darim Vision DVMPEG (dummy for MPEG compressor) (www.darvision.com)',
1841
            'DVSL' => 'IEC Standard DV compressed in SD (SDL)',
1842
            'DVAN' => '?DVAN?',
1843
            'DVE2' => 'InSoft DVE-2 Videoconferencing',
1844
            'dvsd' => 'IEC 61834 and SMPTE 314M DVC/DV Video',
1845
            'DVSD' => 'IEC 61834 and SMPTE 314M DVC/DV Video',
1846
            'DVX1' => 'Lucent DVX1000SP Video Decoder',
1847
            'DVX2' => 'Lucent DVX2000S Video Decoder',
1848
            'DVX3' => 'Lucent DVX3000S Video Decoder',
1849
            'DX50' => 'DivX v5',
1850
            'DXT1' => 'Microsoft DirectX Compressed Texture (DXT1)',
1851
            'DXT2' => 'Microsoft DirectX Compressed Texture (DXT2)',
1852
            'DXT3' => 'Microsoft DirectX Compressed Texture (DXT3)',
1853
            'DXT4' => 'Microsoft DirectX Compressed Texture (DXT4)',
1854
            'DXT5' => 'Microsoft DirectX Compressed Texture (DXT5)',
1855
            'DXTC' => 'Microsoft DirectX Compressed Texture (DXTC)',
1856
            'DXTn' => 'Microsoft DirectX Compressed Texture (DXTn)',
1857
            'EM2V' => 'Etymonix MPEG-2 I-frame (www.etymonix.com)',
1858
            'EKQ0' => 'Elsa ?EKQ0?',
1859
            'ELK0' => 'Elsa ?ELK0?',
1860
            'ESCP' => 'Eidos Escape',
1861
            'ETV1' => 'eTreppid Video ETV1',
1862
            'ETV2' => 'eTreppid Video ETV2',
1863
            'ETVC' => 'eTreppid Video ETVC',
1864
            'FLIC' => 'Autodesk FLI/FLC Animation',
1865
            'FRWT' => 'Darim Vision Forward Motion JPEG (www.darvision.com)',
1866
            'FRWU' => 'Darim Vision Forward Uncompressed (www.darvision.com)',
1867
            'FLJP' => 'D-Vision Field Encoded Motion JPEG',
1868
            'FRWA' => 'SoftLab-Nsk Forward Motion JPEG w/ alpha channel',
1869
            'FRWD' => 'SoftLab-Nsk Forward Motion JPEG',
1870
            'FVF1' => 'Iterated Systems Fractal Video Frame',
1871
            'GLZW' => 'Motion LZW ([email protected])',
1872
            'GPEG' => 'Motion JPEG ([email protected])',
1873
            'GWLT' => 'Microsoft Greyscale WLT DIB',
1874
            'H260' => 'Intel ITU H.260 Videoconferencing',
1875
            'H261' => 'Intel ITU H.261 Videoconferencing',
1876
            'H262' => 'Intel ITU H.262 Videoconferencing',
1877
            'H263' => 'Intel ITU H.263 Videoconferencing',
1878
            'H264' => 'Intel ITU H.264 Videoconferencing',
1879
            'H265' => 'Intel ITU H.265 Videoconferencing',
1880
            'H266' => 'Intel ITU H.266 Videoconferencing',
1881
            'H267' => 'Intel ITU H.267 Videoconferencing',
1882
            'H268' => 'Intel ITU H.268 Videoconferencing',
1883
            'H269' => 'Intel ITU H.269 Videoconferencing',
1884
            'HFYU' => 'Huffman Lossless Codec',
1885
            'HMCR' => 'Rendition Motion Compensation Format (HMCR)',
1886
            'HMRR' => 'Rendition Motion Compensation Format (HMRR)',
1887
            'I263' => 'FFmpeg I263 decoder',
1888
            'IF09' => 'Indeo YVU9 ("YVU9 with additional delta-frame info after the U plane")',
1889
            'IUYV' => 'Interlaced version of UYVY (www.leadtools.com)',
1890
            'IY41' => 'Interlaced version of Y41P (www.leadtools.com)',
1891
            'IYU1' => '12 bit format used in mode 2 of the IEEE 1394 Digital Camera 1.04 spec    IEEE standard',
1892
            'IYU2' => '24 bit format used in mode 2 of the IEEE 1394 Digital Camera 1.04 spec    IEEE standard',
1893
            'IYUV' => 'Planar YUV format (8-bpp Y plane, followed by 8-bpp 2�2 U and V planes)',
1894
            'i263' => 'Intel ITU H.263 Videoconferencing (i263)',
1895
            'I420' => 'Intel Indeo 4',
1896
            'IAN ' => 'Intel Indeo 4 (RDX)',
1897
            'ICLB' => 'InSoft CellB Videoconferencing',
1898
            'IGOR' => 'Power DVD',
1899
            'IJPG' => 'Intergraph JPEG',
1900
            'ILVC' => 'Intel Layered Video',
1901
            'ILVR' => 'ITU-T H.263+',
1902
            'IPDV' => 'I-O Data Device Giga AVI DV Codec',
1903
            'IR21' => 'Intel Indeo 2.1',
1904
            'IRAW' => 'Intel YUV Uncompressed',
1905
            'IV30' => 'Intel Indeo 3.0',
1906
            'IV31' => 'Intel Indeo 3.1',
1907
            'IV32' => 'Ligos Indeo 3.2',
1908
            'IV33' => 'Ligos Indeo 3.3',
1909
            'IV34' => 'Ligos Indeo 3.4',
1910
            'IV35' => 'Ligos Indeo 3.5',
1911
            'IV36' => 'Ligos Indeo 3.6',
1912
            'IV37' => 'Ligos Indeo 3.7',
1913
            'IV38' => 'Ligos Indeo 3.8',
1914
            'IV39' => 'Ligos Indeo 3.9',
1915
            'IV40' => 'Ligos Indeo Interactive 4.0',
1916
            'IV41' => 'Ligos Indeo Interactive 4.1',
1917
            'IV42' => 'Ligos Indeo Interactive 4.2',
1918
            'IV43' => 'Ligos Indeo Interactive 4.3',
1919
            'IV44' => 'Ligos Indeo Interactive 4.4',
1920
            'IV45' => 'Ligos Indeo Interactive 4.5',
1921
            'IV46' => 'Ligos Indeo Interactive 4.6',
1922
            'IV47' => 'Ligos Indeo Interactive 4.7',
1923
            'IV48' => 'Ligos Indeo Interactive 4.8',
1924
            'IV49' => 'Ligos Indeo Interactive 4.9',
1925
            'IV50' => 'Ligos Indeo Interactive 5.0',
1926
            'JBYR' => 'Kensington ?JBYR?',
1927
            'JPEG' => 'Still Image JPEG DIB',
1928
            'JPGL' => 'Pegasus Lossless Motion JPEG',
1929
            'KMVC' => 'Team17 Software Karl Morton\'s Video Codec',
1930
            'LSVM' => 'Vianet Lighting Strike Vmail (Streaming) (www.vianet.com)',
1931
            'LEAD' => 'LEAD Video Codec',
1932
            'Ljpg' => 'LEAD MJPEG Codec',
1933
            'MDVD' => 'Alex MicroDVD Video (hacked MS MPEG-4) (www.tiasoft.de)',
1934
            'MJPA' => 'Morgan Motion JPEG (MJPA) (www.morgan-multimedia.com)',
1935
            'MJPB' => 'Morgan Motion JPEG (MJPB) (www.morgan-multimedia.com)',
1936
            'MMES' => 'Matrox MPEG-2 I-frame',
1937
            'MP2v' => 'Microsoft S-Mpeg 4 version 1 (MP2v)',
1938
            'MP42' => 'Microsoft S-Mpeg 4 version 2 (MP42)',
1939
            'MP43' => 'Microsoft S-Mpeg 4 version 3 (MP43)',
1940
            'MP4S' => 'Microsoft S-Mpeg 4 version 3 (MP4S)',
1941
            'MP4V' => 'FFmpeg MPEG-4',
1942
            'MPG1' => 'FFmpeg MPEG 1/2',
1943
            'MPG2' => 'FFmpeg MPEG 1/2',
1944
            'MPG3' => 'FFmpeg DivX ;-) (MS MPEG-4 v3)',
1945
            'MPG4' => 'Microsoft MPEG-4',
1946
            'MPGI' => 'Sigma Designs MPEG',
1947
            'MPNG' => 'PNG images decoder',
1948
            'MSS1' => 'Microsoft Windows Screen Video',
1949
            'MSZH' => 'LCL (Lossless Codec Library) (www.geocities.co.jp/Playtown-Denei/2837/LRC.htm)',
1950
            'M261' => 'Microsoft H.261',
1951
            'M263' => 'Microsoft H.263',
1952
            'M4S2' => 'Microsoft Fully Compliant MPEG-4 v2 simple profile (M4S2)',
1953
            'm4s2' => 'Microsoft Fully Compliant MPEG-4 v2 simple profile (m4s2)',
1954
            'MC12' => 'ATI Motion Compensation Format (MC12)',
1955
            'MCAM' => 'ATI Motion Compensation Format (MCAM)',
1956
            'MJ2C' => 'Morgan Multimedia Motion JPEG2000',
1957
            'mJPG' => 'IBM Motion JPEG w/ Huffman Tables',
1958
            'MJPG' => 'Microsoft Motion JPEG DIB',
1959
            'MP42' => 'Microsoft MPEG-4 (low-motion)',
1960
            'MP43' => 'Microsoft MPEG-4 (fast-motion)',
1961
            'MP4S' => 'Microsoft MPEG-4 (MP4S)',
1962
            'mp4s' => 'Microsoft MPEG-4 (mp4s)',
1963
            'MPEG' => 'Chromatic Research MPEG-1 Video I-Frame',
1964
            'MPG4' => 'Microsoft MPEG-4 Video High Speed Compressor',
1965
            'MPGI' => 'Sigma Designs MPEG',
1966
            'MRCA' => 'FAST Multimedia Martin Regen Codec',
1967
            'MRLE' => 'Microsoft Run Length Encoding',
1968
            'MSVC' => 'Microsoft Video 1',
1969
            'MTX1' => 'Matrox ?MTX1?',
1970
            'MTX2' => 'Matrox ?MTX2?',
1971
            'MTX3' => 'Matrox ?MTX3?',
1972
            'MTX4' => 'Matrox ?MTX4?',
1973
            'MTX5' => 'Matrox ?MTX5?',
1974
            'MTX6' => 'Matrox ?MTX6?',
1975
            'MTX7' => 'Matrox ?MTX7?',
1976
            'MTX8' => 'Matrox ?MTX8?',
1977
            'MTX9' => 'Matrox ?MTX9?',
1978
            'MV12' => 'Motion Pixels Codec (old)',
1979
            'MWV1' => 'Aware Motion Wavelets',
1980
            'nAVI' => 'SMR Codec (hack of Microsoft MPEG-4) (IRC #shadowrealm)',
1981
            'NT00' => 'NewTek LightWave HDTV YUV w/ Alpha (www.newtek.com)',
1982
            'NUV1' => 'NuppelVideo',
1983
            'NTN1' => 'Nogatech Video Compression 1',
1984
            'NVS0' => 'nVidia GeForce Texture (NVS0)',
1985
            'NVS1' => 'nVidia GeForce Texture (NVS1)',
1986
            'NVS2' => 'nVidia GeForce Texture (NVS2)',
1987
            'NVS3' => 'nVidia GeForce Texture (NVS3)',
1988
            'NVS4' => 'nVidia GeForce Texture (NVS4)',
1989
            'NVS5' => 'nVidia GeForce Texture (NVS5)',
1990
            'NVT0' => 'nVidia GeForce Texture (NVT0)',
1991
            'NVT1' => 'nVidia GeForce Texture (NVT1)',
1992
            'NVT2' => 'nVidia GeForce Texture (NVT2)',
1993
            'NVT3' => 'nVidia GeForce Texture (NVT3)',
1994
            'NVT4' => 'nVidia GeForce Texture (NVT4)',
1995
            'NVT5' => 'nVidia GeForce Texture (NVT5)',
1996
            'PIXL' => 'MiroXL, Pinnacle PCTV',
1997
            'PDVC' => 'I-O Data Device Digital Video Capture DV codec',
1998
            'PGVV' => 'Radius Video Vision',
1999
            'PHMO' => 'IBM Photomotion',
2000
            'PIM1' => 'MPEG Realtime (Pinnacle Cards)',
2001
            'PIM2' => 'Pegasus Imaging ?PIM2?',
2002
            'PIMJ' => 'Pegasus Imaging Lossless JPEG',
2003
            'PVEZ' => 'Horizons Technology PowerEZ',
2004
            'PVMM' => 'PacketVideo Corporation MPEG-4',
2005
            'PVW2' => 'Pegasus Imaging Wavelet Compression',
2006
            'Q1.0' => 'Q-Team\'s QPEG 1.0 (www.q-team.de)',
2007
            'Q1.1' => 'Q-Team\'s QPEG 1.1 (www.q-team.de)',
2008
            'QPEG' => 'Q-Team QPEG 1.0',
2009
            'qpeq' => 'Q-Team QPEG 1.1',
2010
            'RGB ' => 'Raw BGR32',
2011
            'RGBA' => 'Raw RGB w/ Alpha',
2012
            'RMP4' => 'REALmagic MPEG-4 (unauthorized XVID copy) (www.sigmadesigns.com)',
2013
            'ROQV' => 'Id RoQ File Video Decoder',
2014
            'RPZA' => 'Quicktime Apple Video (RPZA)',
2015
            'RUD0' => 'Rududu video codec (http://rududu.ifrance.com/rududu/)',
2016
            'RV10' => 'RealVideo 1.0 (aka RealVideo 5.0)',
2017
            'RV13' => 'RealVideo 1.0 (RV13)',
2018
            'RV20' => 'RealVideo G2',
2019
            'RV30' => 'RealVideo 8',
2020
            'RV40' => 'RealVideo 9',
2021
            'RGBT' => 'Raw RGB w/ Transparency',
2022
            'RLE ' => 'Microsoft Run Length Encoder',
2023
            'RLE4' => 'Run Length Encoded (4bpp, 16-color)',
2024
            'RLE8' => 'Run Length Encoded (8bpp, 256-color)',
2025
            'RT21' => 'Intel Indeo RealTime Video 2.1',
2026
            'rv20' => 'RealVideo G2',
2027
            'rv30' => 'RealVideo 8',
2028
            'RVX ' => 'Intel RDX (RVX )',
2029
            'SMC ' => 'Apple Graphics (SMC )',
2030
            'SP54' => 'Logitech Sunplus Sp54 Codec for Mustek GSmart Mini 2',
2031
            'SPIG' => 'Radius Spigot',
2032
            'SVQ3' => 'Sorenson Video 3 (Apple Quicktime 5)',
2033
            's422' => 'Tekram VideoCap C210 YUV 4:2:2',
2034
            'SDCC' => 'Sun Communication Digital Camera Codec',
2035
            'SFMC' => 'CrystalNet Surface Fitting Method',
2036
            'SMSC' => 'Radius SMSC',
2037
            'SMSD' => 'Radius SMSD',
2038
            'smsv' => 'WorldConnect Wavelet Video',
2039
            'SPIG' => 'Radius Spigot',
2040
            'SPLC' => 'Splash Studios ACM Audio Codec (www.splashstudios.net)',
2041
            'SQZ2' => 'Microsoft VXTreme Video Codec V2',
2042
            'STVA' => 'ST Microelectronics CMOS Imager Data (Bayer)',
2043
            'STVB' => 'ST Microelectronics CMOS Imager Data (Nudged Bayer)',
2044
            'STVC' => 'ST Microelectronics CMOS Imager Data (Bunched)',
2045
            'STVX' => 'ST Microelectronics CMOS Imager Data (Extended CODEC Data Format)',
2046
            'STVY' => 'ST Microelectronics CMOS Imager Data (Extended CODEC Data Format with Correction Data)',
2047
            'SV10' => 'Sorenson Video R1',
2048
            'SVQ1' => 'Sorenson Video',
2049
            'T420' => 'Toshiba YUV 4:2:0',
2050
            'TM2A' => 'Duck TrueMotion Archiver 2.0 (www.duck.com)',
2051
            'TVJP' => 'Pinnacle/Truevision Targa 2000 board (TVJP)',
2052
            'TVMJ' => 'Pinnacle/Truevision Targa 2000 board (TVMJ)',
2053
            'TY0N' => 'Tecomac Low-Bit Rate Codec (www.tecomac.com)',
2054
            'TY2C' => 'Trident Decompression Driver',
2055
            'TLMS' => 'TeraLogic Motion Intraframe Codec (TLMS)',
2056
            'TLST' => 'TeraLogic Motion Intraframe Codec (TLST)',
2057
            'TM20' => 'Duck TrueMotion 2.0',
2058
            'TM2X' => 'Duck TrueMotion 2X',
2059
            'TMIC' => 'TeraLogic Motion Intraframe Codec (TMIC)',
2060
            'TMOT' => 'Horizons Technology TrueMotion S',
2061
            'tmot' => 'Horizons TrueMotion Video Compression',
2062
            'TR20' => 'Duck TrueMotion RealTime 2.0',
2063
            'TSCC' => 'TechSmith Screen Capture Codec',
2064
            'TV10' => 'Tecomac Low-Bit Rate Codec',
2065
            'TY2N' => 'Trident ?TY2N?',
2066
            'U263' => 'UB Video H.263/H.263+/H.263++ Decoder',
2067
            'UMP4' => 'UB Video MPEG 4 (www.ubvideo.com)',
2068
            'UYNV' => 'Nvidia UYVY packed 4:2:2',
2069
            'UYVP' => 'Evans & Sutherland YCbCr 4:2:2 extended precision',
2070
            'UCOD' => 'eMajix.com ClearVideo',
2071
            'ULTI' => 'IBM Ultimotion',
2072
            'UYVY' => 'UYVY packed 4:2:2',
2073
            'V261' => 'Lucent VX2000S',
2074
            'VIFP' => 'VFAPI Reader Codec (www.yks.ne.jp/~hori/)',
2075
            'VIV1' => 'FFmpeg H263+ decoder',
2076
            'VIV2' => 'Vivo H.263',
2077
            'VQC2' => 'Vector-quantised codec 2 (research) http://eprints.ecs.soton.ac.uk/archive/00001310/01/VTC97-js.pdf)',
2078
            'VTLP' => 'Alaris VideoGramPiX',
2079
            'VYU9' => 'ATI YUV (VYU9)',
2080
            'VYUY' => 'ATI YUV (VYUY)',
2081
            'V261' => 'Lucent VX2000S',
2082
            'V422' => 'Vitec Multimedia 24-bit YUV 4:2:2 Format',
2083
            'V655' => 'Vitec Multimedia 16-bit YUV 4:2:2 Format',
2084
            'VCR1' => 'ATI Video Codec 1',
2085
            'VCR2' => 'ATI Video Codec 2',
2086
            'VCR3' => 'ATI VCR 3.0',
2087
            'VCR4' => 'ATI VCR 4.0',
2088
            'VCR5' => 'ATI VCR 5.0',
2089
            'VCR6' => 'ATI VCR 6.0',
2090
            'VCR7' => 'ATI VCR 7.0',
2091
            'VCR8' => 'ATI VCR 8.0',
2092
            'VCR9' => 'ATI VCR 9.0',
2093
            'VDCT' => 'Vitec Multimedia Video Maker Pro DIB',
2094
            'VDOM' => 'VDOnet VDOWave',
2095
            'VDOW' => 'VDOnet VDOLive (H.263)',
2096
            'VDTZ' => 'Darim Vison VideoTizer YUV',
2097
            'VGPX' => 'Alaris VideoGramPiX',
2098
            'VIDS' => 'Vitec Multimedia YUV 4:2:2 CCIR 601 for V422',
2099
            'VIVO' => 'Vivo H.263 v2.00',
2100
            'vivo' => 'Vivo H.263',
2101
            'VIXL' => 'Miro/Pinnacle Video XL',
2102
            'VLV1' => 'VideoLogic/PURE Digital Videologic Capture',
2103
            'VP30' => 'On2 VP3.0',
2104
            'VP31' => 'On2 VP3.1',
2105
            'VX1K' => 'Lucent VX1000S Video Codec',
2106
            'VX2K' => 'Lucent VX2000S Video Codec',
2107
            'VXSP' => 'Lucent VX1000SP Video Codec',
2108
            'WBVC' => 'Winbond W9960',
2109
            'WHAM' => 'Microsoft Video 1 (WHAM)',
2110
            'WINX' => 'Winnov Software Compression',
2111
            'WJPG' => 'AverMedia Winbond JPEG',
2112
            'WMV1' => 'Windows Media Video V7',
2113
            'WMV2' => 'Windows Media Video V8',
2114
            'WMV3' => 'Windows Media Video V9',
2115
            'WNV1' => 'Winnov Hardware Compression',
2116
            'XYZP' => 'Extended PAL format XYZ palette (www.riff.org)',
2117
            'x263' => 'Xirlink H.263',
2118
            'XLV0' => 'NetXL Video Decoder',
2119
            'XMPG' => 'Xing MPEG (I-Frame only)',
2120
            'XVID' => 'XviD MPEG-4 (www.xvid.org)',
2121
            'XXAN' => '?XXAN?',
2122
            'YU92' => 'Intel YUV (YU92)',
2123
            'YUNV' => 'Nvidia Uncompressed YUV 4:2:2',
2124
            'YUVP' => 'Extended PAL format YUV palette (www.riff.org)',
2125
            'Y211' => 'YUV 2:1:1 Packed',
2126
            'Y411' => 'YUV 4:1:1 Packed',
2127
            'Y41B' => 'Weitek YUV 4:1:1 Planar',
2128
            'Y41P' => 'Brooktree PC1 YUV 4:1:1 Packed',
2129
            'Y41T' => 'Brooktree PC1 YUV 4:1:1 with transparency',
2130
            'Y42B' => 'Weitek YUV 4:2:2 Planar',
2131
            'Y42T' => 'Brooktree UYUV 4:2:2 with transparency',
2132
            'Y422' => 'ADS Technologies Copy of UYVY used in Pyro WebCam firewire camera',
2133
            'Y800' => 'Simple, single Y plane for monochrome images',
2134
            'Y8  ' => 'Grayscale video',
2135
            'YC12' => 'Intel YUV 12 codec',
2136
            'YUV8' => 'Winnov Caviar YUV8',
2137
            'YUV9' => 'Intel YUV9',
2138
            'YUY2' => 'Uncompressed YUV 4:2:2',
2139
            'YUYV' => 'Canopus YUV',
2140
            'YV12' => 'YVU12 Planar',
2141
            'YVU9' => 'Intel YVU9 Planar (8-bpp Y plane, followed by 8-bpp 4x4 U and V planes)',
2142
            'YVYU' => 'YVYU 4:2:2 Packed',
2143
            'ZLIB' => 'Lossless Codec Library zlib compression (www.geocities.co.jp/Playtown-Denei/2837/LRC.htm)',
2144
            'ZPEG' => 'Metheus Video Zipper'
2145
        );
2146
        
2147
        return @$lookup[$four_cc];
2148
    }
2149
2150
2151
2152
    public static function RIFFcommentsParse(&$riff_info_aray, &$comments_target_array) {
2153
        
2154
		static $lookup = array(
2155
			'IARL' => 'archivallocation',
2156
			'IART' => 'artist',
2157
			'ICDS' => 'costumedesigner',
2158
			'ICMS' => 'commissionedby',
2159
			'ICMT' => 'comment',
2160
			'ICNT' => 'country',
2161
			'ICOP' => 'copyright',
2162
			'ICRD' => 'creationdate',
2163
			'IDIM' => 'dimensions',
2164
			'IDIT' => 'digitizationdate',
2165
			'IDPI' => 'resolution',
2166
			'IDST' => 'distributor',
2167
			'IEDT' => 'editor',
2168
			'IENG' => 'engineers',
2169
			'IFRM' => 'accountofparts',
2170
			'IGNR' => 'genre',
2171
			'IKEY' => 'keywords',
2172
			'ILGT' => 'lightness',
2173
			'ILNG' => 'language',
2174
			'IMED' => 'orignalmedium',
2175
			'IMUS' => 'composer',
2176
			'INAM' => 'title',
2177
			'IPDS' => 'productiondesigner',
2178
			'IPLT' => 'palette',
2179
			'IPRD' => 'product',
2180
			'IPRO' => 'producer',
2181
			'IPRT' => 'part',
2182
			'IRTD' => 'rating',
2183
			'ISBJ' => 'subject',
2184
			'ISFT' => 'software',
2185
			'ISGN' => 'secondarygenre',
2186
			'ISHP' => 'sharpness',
2187
			'ISRC' => 'sourcesupplier',
2188
			'ISRF' => 'digitizationsource',
2189
			'ISTD' => 'productionstudio',
2190
			'ISTR' => 'starring',
2191
			'ITCH' => 'encoded_by',
2192
			'IWEB' => 'url',
2193
			'IWRI' => 'writer'
2194
		);
2195
		
2196
		foreach ($lookup as $key => $value) {
2197
			if (isset($riff_info_aray[$key])) {
2198
				foreach ($riff_info_aray[$key] as $comment_id => $comment_data) {
2199
					if (trim($comment_data['data']) != '') {
2200
						@$comments_target_array[$value][] = trim($comment_data['data']);
2201
					}
2202
				}
2203
			}
2204
		}
2205
		return true;
2206
    }
2207
	
2208
	
2209
	
2210
    public static function array_merge_noclobber($array1, $array2) {
2211
        if (!is_array($array1) || !is_array($array2)) {
2212
            return false;
2213
        }
2214
        $new_array = $array1;
2215
        foreach ($array2 as $key => $val) {
2216
            if (is_array($val) && isset($new_array[$key]) && is_array($new_array[$key])) {
2217
                $new_array[$key] = getid3_riff::array_merge_noclobber($new_array[$key], $val);
2218
            } elseif (!isset($new_array[$key])) {
2219
                $new_array[$key] = $val;
2220
            }
2221
        }
2222
        return $new_array;
2223
    }
2224
    
2225
    
2226
  
2227
    public static function DateMac2Unix($mac_date) {
2228
        
2229
        // Macintosh timestamp: seconds since 00:00h January 1, 1904
2230
        // UNIX timestamp:      seconds since 00:00h January 1, 1970
2231
        return (int)($mac_date - 2082844800);
2232
    }
2233
    
2234
    
2235
    
2236
    public static function FixedPoint16_16($raw_data) {
2237
    
2238
        return getid3_lib::BigEndian2Int(substr($raw_data, 0, 2)) + (float)(getid3_lib::BigEndian2Int(substr($raw_data, 2, 2)) / 65536);  // pow(2, 16) = 65536
2239
    }
2240
    
2241
    
2242
    
2243
   	function BigEndian2Float($byte_word) {
0 ignored issues
show
Best Practice introduced by
It is generally recommended to explicitly declare the visibility for methods.

Adding explicit visibility (private, protected, or public) is generally recommend to communicate to other developers how, and from where this method is intended to be used.

Loading history...
2244
	
2245
        // ANSI/IEEE Standard 754-1985, Standard for Binary Floating Point Arithmetic
2246
        // http://www.psc.edu/general/software/packages/ieee/ieee.html
2247
        // http://www.scri.fsu.edu/~jac/MAD3401/Backgrnd/ieee.html
2248
2249
        $bit_word = getid3_lib::BigEndian2Bin($byte_word);
2250
        $sign_bit = $bit_word{0};
2251
2252
        switch (strlen($byte_word) * 8) {
2253
            case 32:
2254
                $exponent_bits = 8;
2255
                $fraction_bits = 23;
2256
                break;
2257
2258
            case 64:
2259
                $exponent_bits = 11;
2260
                $fraction_bits = 52;
2261
                break;
2262
2263
            case 80:
2264
                // 80-bit Apple SANE format
2265
                // http://www.mactech.com/articles/mactech/Vol.06/06.01/SANENormalized/
2266
                $exponent_string = substr($bit_word, 1, 15);
2267
                $is_normalized   = intval($bit_word{16});
2268
                $fraction_string = substr($bit_word, 17, 63);
2269
                $exponent = pow(2, bindec($exponent_string) - 16383);
2270
                $fraction = $is_normalized + bindec($fraction_string) / bindec('1'.str_repeat('0', strlen($fraction_string)));
2271
                $float_value = $exponent * $fraction;
2272
                if ($sign_bit == '1') {
2273
                    $float_value *= -1;
2274
                }
2275
                return $float_value;
2276
                break;
0 ignored issues
show
Unused Code introduced by
break is not strictly necessary here and could be removed.

The break statement is not necessary if it is preceded for example by a return statement:

switch ($x) {
    case 1:
        return 'foo';
        break; // This break is not necessary and can be left off.
}

If you would like to keep this construct to be consistent with other case statements, you can safely mark this issue as a false-positive.

Loading history...
2277
2278
            default:
2279
                return false;
2280
                break;
2281
        }
2282
        $exponent_string = substr($bit_word, 1, $exponent_bits);
2283
        $fraction_string = substr($bit_word, $exponent_bits + 1, $fraction_bits);
2284
        $exponent = bindec($exponent_string);
2285
        $fraction = bindec($fraction_string);
2286
2287
        if (($exponent == (pow(2, $exponent_bits) - 1)) && ($fraction != 0)) {
2288
            // Not a Number
2289
            $float_value = false;
2290
        } elseif (($exponent == (pow(2, $exponent_bits) - 1)) && ($fraction == 0)) {
2291
            if ($sign_bit == '1') {
2292
                $float_value = '-infinity';
2293
            } else {
2294
                $float_value = '+infinity';
2295
            }
2296
        } elseif (($exponent == 0) && ($fraction == 0)) {
2297
            if ($sign_bit == '1') {
2298
                $float_value = -0;
0 ignored issues
show
Unused Code introduced by
The assignment to $float_value is dead and can be removed.
Loading history...
2299
            } else {
2300
                $float_value = 0;
2301
            }
2302
            $float_value = ($sign_bit ? 0 : -0);
2303
        } elseif (($exponent == 0) && ($fraction != 0)) {
2304
            // These are 'unnormalized' values
2305
            $float_value = pow(2, (-1 * (pow(2, $exponent_bits - 1) - 2))) * bindec($fraction_string) / bindec('1'.str_repeat('0', strlen($fraction_string)));
2306
            if ($sign_bit == '1') {
2307
                $float_value *= -1;
2308
            }
2309
        } elseif ($exponent != 0) {
2310
            $float_value = pow(2, ($exponent - (pow(2, $exponent_bits - 1) - 1))) * (1 + bindec($fraction_string) / bindec('1'.str_repeat('0', strlen($fraction_string))));
2311
            if ($sign_bit == '1') {
2312
                $float_value *= -1;
2313
            }
2314
        }
2315
        return (float) $float_value;
0 ignored issues
show
Comprehensibility Best Practice introduced by
The variable $float_value does not seem to be defined for all execution paths leading up to this point.
Loading history...
2316
    }
2317
}
2318
2319
?>
0 ignored issues
show
Best Practice introduced by
It is not recommended to use PHP's closing tag ?> in files other than templates.

Using a closing tag in PHP files that only contain PHP code is not recommended as you might accidentally add whitespace after the closing tag which would then be output by PHP. This can cause severe problems, for example headers cannot be sent anymore.

A simple precaution is to leave off the closing tag as it is not required, and it also has no negative effects whatsoever.

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