ILIAS  release_5-1 Revision 5.0.0-5477-g43f3e3fab5f
Public Member Functions
getid3_monkey Class Reference

getID3() by James Heinrich info@.nosp@m.geti.nosp@m.d3.or.nosp@m.g // More...

+ Inheritance diagram for getid3_monkey:
+ Collaboration diagram for getid3_monkey:

Public Member Functions

 getid3_monkey (&$fd, &$ThisFileInfo)
 
 MonkeyCompressionLevelNameLookup ($compressionlevel)
 
 MonkeySamplesPerFrame ($versionid, $compressionlevel)
 
 Analyze ()
 
 MonkeyCompressionLevelNameLookup ($compressionlevel)
 
 MonkeySamplesPerFrame ($versionid, $compressionlevel)
 
- Public Member Functions inherited from getid3_handler
 __construct (getID3 $getid3, $call_module=null)
 
 Analyze ()
 
 AnalyzeString ($string)
 
 setStringMode ($string)
 
 saveAttachment ($name, $offset, $length, $image_mime=null)
 

Additional Inherited Members

- Protected Member Functions inherited from getid3_handler
 ftell ()
 
 fread ($bytes)
 
 fseek ($bytes, $whence=SEEK_SET)
 
 feof ()
 
 isDependencyFor ($module)
 
 error ($text)
 
 warning ($text)
 
 notice ($text)
 
- Protected Attributes inherited from getid3_handler
 $getid3
 
 $data_string_flag = false
 
 $data_string = ''
 
 $data_string_position = 0
 
 $data_string_length = 0
 

Detailed Description

getID3() by James Heinrich info@.nosp@m.geti.nosp@m.d3.or.nosp@m.g //

Definition at line 17 of file module.audio.monkey.php.

Member Function Documentation

◆ Analyze()

getid3_monkey::Analyze ( )

Reimplemented from getid3_handler.

Definition at line 21 of file module.audio.monkey.php.

21 {
22 $info = &$this->getid3->info;
23
24 // based loosely on code from TMonkey by Jurgen Faul <jfaulØgmx*de>
25 // http://jfaul.de/atl or http://j-faul.virtualave.net/atl/atl.html
26
27 $info['fileformat'] = 'mac';
28 $info['audio']['dataformat'] = 'mac';
29 $info['audio']['bitrate_mode'] = 'vbr';
30 $info['audio']['lossless'] = true;
31
32 $info['monkeys_audio']['raw'] = array();
33 $thisfile_monkeysaudio = &$info['monkeys_audio'];
34 $thisfile_monkeysaudio_raw = &$thisfile_monkeysaudio['raw'];
35
36 $this->fseek($info['avdataoffset']);
37 $MACheaderData = $this->fread(74);
38
39 $thisfile_monkeysaudio_raw['magic'] = substr($MACheaderData, 0, 4);
40 $magic = 'MAC ';
41 if ($thisfile_monkeysaudio_raw['magic'] != $magic) {
42 $info['error'][] = 'Expecting "'.getid3_lib::PrintHexBytes($magic).'" at offset '.$info['avdataoffset'].', found "'.getid3_lib::PrintHexBytes($thisfile_monkeysaudio_raw['magic']).'"';
43 unset($info['fileformat']);
44 return false;
45 }
46 $thisfile_monkeysaudio_raw['nVersion'] = getid3_lib::LittleEndian2Int(substr($MACheaderData, 4, 2)); // appears to be uint32 in 3.98+
47
48 if ($thisfile_monkeysaudio_raw['nVersion'] < 3980) {
49 $thisfile_monkeysaudio_raw['nCompressionLevel'] = getid3_lib::LittleEndian2Int(substr($MACheaderData, 6, 2));
50 $thisfile_monkeysaudio_raw['nFormatFlags'] = getid3_lib::LittleEndian2Int(substr($MACheaderData, 8, 2));
51 $thisfile_monkeysaudio_raw['nChannels'] = getid3_lib::LittleEndian2Int(substr($MACheaderData, 10, 2));
52 $thisfile_monkeysaudio_raw['nSampleRate'] = getid3_lib::LittleEndian2Int(substr($MACheaderData, 12, 4));
53 $thisfile_monkeysaudio_raw['nHeaderDataBytes'] = getid3_lib::LittleEndian2Int(substr($MACheaderData, 16, 4));
54 $thisfile_monkeysaudio_raw['nWAVTerminatingBytes'] = getid3_lib::LittleEndian2Int(substr($MACheaderData, 20, 4));
55 $thisfile_monkeysaudio_raw['nTotalFrames'] = getid3_lib::LittleEndian2Int(substr($MACheaderData, 24, 4));
56 $thisfile_monkeysaudio_raw['nFinalFrameSamples'] = getid3_lib::LittleEndian2Int(substr($MACheaderData, 28, 4));
57 $thisfile_monkeysaudio_raw['nPeakLevel'] = getid3_lib::LittleEndian2Int(substr($MACheaderData, 32, 4));
58 $thisfile_monkeysaudio_raw['nSeekElements'] = getid3_lib::LittleEndian2Int(substr($MACheaderData, 38, 2));
59 $offset = 8;
60 } else {
61 $offset = 8;
62 // APE_DESCRIPTOR
63 $thisfile_monkeysaudio_raw['nDescriptorBytes'] = getid3_lib::LittleEndian2Int(substr($MACheaderData, $offset, 4));
64 $offset += 4;
65 $thisfile_monkeysaudio_raw['nHeaderBytes'] = getid3_lib::LittleEndian2Int(substr($MACheaderData, $offset, 4));
66 $offset += 4;
67 $thisfile_monkeysaudio_raw['nSeekTableBytes'] = getid3_lib::LittleEndian2Int(substr($MACheaderData, $offset, 4));
68 $offset += 4;
69 $thisfile_monkeysaudio_raw['nHeaderDataBytes'] = getid3_lib::LittleEndian2Int(substr($MACheaderData, $offset, 4));
70 $offset += 4;
71 $thisfile_monkeysaudio_raw['nAPEFrameDataBytes'] = getid3_lib::LittleEndian2Int(substr($MACheaderData, $offset, 4));
72 $offset += 4;
73 $thisfile_monkeysaudio_raw['nAPEFrameDataBytesHigh'] = getid3_lib::LittleEndian2Int(substr($MACheaderData, $offset, 4));
74 $offset += 4;
75 $thisfile_monkeysaudio_raw['nTerminatingDataBytes'] = getid3_lib::LittleEndian2Int(substr($MACheaderData, $offset, 4));
76 $offset += 4;
77 $thisfile_monkeysaudio_raw['cFileMD5'] = substr($MACheaderData, $offset, 16);
78 $offset += 16;
79
80 // APE_HEADER
81 $thisfile_monkeysaudio_raw['nCompressionLevel'] = getid3_lib::LittleEndian2Int(substr($MACheaderData, $offset, 2));
82 $offset += 2;
83 $thisfile_monkeysaudio_raw['nFormatFlags'] = getid3_lib::LittleEndian2Int(substr($MACheaderData, $offset, 2));
84 $offset += 2;
85 $thisfile_monkeysaudio_raw['nBlocksPerFrame'] = getid3_lib::LittleEndian2Int(substr($MACheaderData, $offset, 4));
86 $offset += 4;
87 $thisfile_monkeysaudio_raw['nFinalFrameBlocks'] = getid3_lib::LittleEndian2Int(substr($MACheaderData, $offset, 4));
88 $offset += 4;
89 $thisfile_monkeysaudio_raw['nTotalFrames'] = getid3_lib::LittleEndian2Int(substr($MACheaderData, $offset, 4));
90 $offset += 4;
91 $thisfile_monkeysaudio_raw['nBitsPerSample'] = getid3_lib::LittleEndian2Int(substr($MACheaderData, $offset, 2));
92 $offset += 2;
93 $thisfile_monkeysaudio_raw['nChannels'] = getid3_lib::LittleEndian2Int(substr($MACheaderData, $offset, 2));
94 $offset += 2;
95 $thisfile_monkeysaudio_raw['nSampleRate'] = getid3_lib::LittleEndian2Int(substr($MACheaderData, $offset, 4));
96 $offset += 4;
97 }
98
99 $thisfile_monkeysaudio['flags']['8-bit'] = (bool) ($thisfile_monkeysaudio_raw['nFormatFlags'] & 0x0001);
100 $thisfile_monkeysaudio['flags']['crc-32'] = (bool) ($thisfile_monkeysaudio_raw['nFormatFlags'] & 0x0002);
101 $thisfile_monkeysaudio['flags']['peak_level'] = (bool) ($thisfile_monkeysaudio_raw['nFormatFlags'] & 0x0004);
102 $thisfile_monkeysaudio['flags']['24-bit'] = (bool) ($thisfile_monkeysaudio_raw['nFormatFlags'] & 0x0008);
103 $thisfile_monkeysaudio['flags']['seek_elements'] = (bool) ($thisfile_monkeysaudio_raw['nFormatFlags'] & 0x0010);
104 $thisfile_monkeysaudio['flags']['no_wav_header'] = (bool) ($thisfile_monkeysaudio_raw['nFormatFlags'] & 0x0020);
105 $thisfile_monkeysaudio['version'] = $thisfile_monkeysaudio_raw['nVersion'] / 1000;
106 $thisfile_monkeysaudio['compression'] = $this->MonkeyCompressionLevelNameLookup($thisfile_monkeysaudio_raw['nCompressionLevel']);
107 if ($thisfile_monkeysaudio_raw['nVersion'] < 3980) {
108 $thisfile_monkeysaudio['samples_per_frame'] = $this->MonkeySamplesPerFrame($thisfile_monkeysaudio_raw['nVersion'], $thisfile_monkeysaudio_raw['nCompressionLevel']);
109 }
110 $thisfile_monkeysaudio['bits_per_sample'] = ($thisfile_monkeysaudio['flags']['24-bit'] ? 24 : ($thisfile_monkeysaudio['flags']['8-bit'] ? 8 : 16));
111 $thisfile_monkeysaudio['channels'] = $thisfile_monkeysaudio_raw['nChannels'];
112 $info['audio']['channels'] = $thisfile_monkeysaudio['channels'];
113 $thisfile_monkeysaudio['sample_rate'] = $thisfile_monkeysaudio_raw['nSampleRate'];
114 if ($thisfile_monkeysaudio['sample_rate'] == 0) {
115 $info['error'][] = 'Corrupt MAC file: frequency == zero';
116 return false;
117 }
118 $info['audio']['sample_rate'] = $thisfile_monkeysaudio['sample_rate'];
119 if ($thisfile_monkeysaudio['flags']['peak_level']) {
120 $thisfile_monkeysaudio['peak_level'] = $thisfile_monkeysaudio_raw['nPeakLevel'];
121 $thisfile_monkeysaudio['peak_ratio'] = $thisfile_monkeysaudio['peak_level'] / pow(2, $thisfile_monkeysaudio['bits_per_sample'] - 1);
122 }
123 if ($thisfile_monkeysaudio_raw['nVersion'] >= 3980) {
124 $thisfile_monkeysaudio['samples'] = (($thisfile_monkeysaudio_raw['nTotalFrames'] - 1) * $thisfile_monkeysaudio_raw['nBlocksPerFrame']) + $thisfile_monkeysaudio_raw['nFinalFrameBlocks'];
125 } else {
126 $thisfile_monkeysaudio['samples'] = (($thisfile_monkeysaudio_raw['nTotalFrames'] - 1) * $thisfile_monkeysaudio['samples_per_frame']) + $thisfile_monkeysaudio_raw['nFinalFrameSamples'];
127 }
128 $thisfile_monkeysaudio['playtime'] = $thisfile_monkeysaudio['samples'] / $thisfile_monkeysaudio['sample_rate'];
129 if ($thisfile_monkeysaudio['playtime'] == 0) {
130 $info['error'][] = 'Corrupt MAC file: playtime == zero';
131 return false;
132 }
133 $info['playtime_seconds'] = $thisfile_monkeysaudio['playtime'];
134 $thisfile_monkeysaudio['compressed_size'] = $info['avdataend'] - $info['avdataoffset'];
135 $thisfile_monkeysaudio['uncompressed_size'] = $thisfile_monkeysaudio['samples'] * $thisfile_monkeysaudio['channels'] * ($thisfile_monkeysaudio['bits_per_sample'] / 8);
136 if ($thisfile_monkeysaudio['uncompressed_size'] == 0) {
137 $info['error'][] = 'Corrupt MAC file: uncompressed_size == zero';
138 return false;
139 }
140 $thisfile_monkeysaudio['compression_ratio'] = $thisfile_monkeysaudio['compressed_size'] / ($thisfile_monkeysaudio['uncompressed_size'] + $thisfile_monkeysaudio_raw['nHeaderDataBytes']);
141 $thisfile_monkeysaudio['bitrate'] = (($thisfile_monkeysaudio['samples'] * $thisfile_monkeysaudio['channels'] * $thisfile_monkeysaudio['bits_per_sample']) / $thisfile_monkeysaudio['playtime']) * $thisfile_monkeysaudio['compression_ratio'];
142 $info['audio']['bitrate'] = $thisfile_monkeysaudio['bitrate'];
143
144 // add size of MAC header to avdataoffset
145 if ($thisfile_monkeysaudio_raw['nVersion'] >= 3980) {
146 $info['avdataoffset'] += $thisfile_monkeysaudio_raw['nDescriptorBytes'];
147 $info['avdataoffset'] += $thisfile_monkeysaudio_raw['nHeaderBytes'];
148 $info['avdataoffset'] += $thisfile_monkeysaudio_raw['nSeekTableBytes'];
149 $info['avdataoffset'] += $thisfile_monkeysaudio_raw['nHeaderDataBytes'];
150
151 $info['avdataend'] -= $thisfile_monkeysaudio_raw['nTerminatingDataBytes'];
152 } else {
153 $info['avdataoffset'] += $offset;
154 }
155
156 if ($thisfile_monkeysaudio_raw['nVersion'] >= 3980) {
157 if ($thisfile_monkeysaudio_raw['cFileMD5'] === str_repeat("\x00", 16)) {
158 //$info['warning'][] = 'cFileMD5 is null';
159 } else {
160 $info['md5_data_source'] = '';
161 $md5 = $thisfile_monkeysaudio_raw['cFileMD5'];
162 for ($i = 0; $i < strlen($md5); $i++) {
163 $info['md5_data_source'] .= str_pad(dechex(ord($md5{$i})), 2, '00', STR_PAD_LEFT);
164 }
165 if (!preg_match('/^[0-9a-f]{32}$/', $info['md5_data_source'])) {
166 unset($info['md5_data_source']);
167 }
168 }
169 }
170
171
172
173 $info['audio']['bits_per_sample'] = $thisfile_monkeysaudio['bits_per_sample'];
174 $info['audio']['encoder'] = 'MAC v'.number_format($thisfile_monkeysaudio['version'], 2);
175 $info['audio']['encoder_options'] = ucfirst($thisfile_monkeysaudio['compression']).' compression';
176
177 return true;
178 }
getid3_handler\fseek
fseek($bytes, $whence=SEEK_SET)
Definition: getid3.php:1697
getid3_handler\fread
fread($bytes)
Definition: getid3.php:1685
getid3_lib\LittleEndian2Int
LittleEndian2Int($byteword, $signed=false)
Definition: getid3.lib.php:266
getid3_lib\PrintHexBytes
PrintHexBytes($string, $hex=true, $spaces=true, $htmlsafe=true)
Definition: getid3.lib.php:17
getid3_monkey\MonkeyCompressionLevelNameLookup
MonkeyCompressionLevelNameLookup($compressionlevel)
Definition: module.audio.monkey.php:176
getid3_monkey\MonkeySamplesPerFrame
MonkeySamplesPerFrame($versionid, $compressionlevel)
Definition: module.audio.monkey.php:188
$info
$info
Definition: example_052.php:80

References $info, getid3_handler\fread(), getid3_handler\fseek(), getid3_lib\LittleEndian2Int(), MonkeyCompressionLevelNameLookup(), MonkeySamplesPerFrame(), and getid3_lib\PrintHexBytes().

+ Here is the call graph for this function:

◆ getid3_monkey()

getid3_monkey::getid3_monkey ( &  $fd,
&  $ThisFileInfo 
)

Definition at line 20 of file module.audio.monkey.php.

20 {
21 // based loosely on code from TMonkey by Jurgen Faul <jfaulØgmx*de>
22 // http://jfaul.de/atl or http://j-faul.virtualave.net/atl/atl.html
23
24 $ThisFileInfo['fileformat'] = 'mac';
25 $ThisFileInfo['audio']['dataformat'] = 'mac';
26 $ThisFileInfo['audio']['bitrate_mode'] = 'vbr';
27 $ThisFileInfo['audio']['lossless'] = true;
28
29 $ThisFileInfo['monkeys_audio']['raw'] = array();
30 $thisfile_monkeysaudio = &$ThisFileInfo['monkeys_audio'];
31 $thisfile_monkeysaudio_raw = &$thisfile_monkeysaudio['raw'];
32
33 fseek($fd, $ThisFileInfo['avdataoffset'], SEEK_SET);
34 $MACheaderData = fread($fd, 74);
35
36 $thisfile_monkeysaudio_raw['magic'] = substr($MACheaderData, 0, 4);
37 if ($thisfile_monkeysaudio_raw['magic'] != 'MAC ') {
38 $ThisFileInfo['error'][] = 'Expecting "MAC" at offset '.$ThisFileInfo['avdataoffset'].', found "'.$thisfile_monkeysaudio_raw['magic'].'"';
39 unset($ThisFileInfo['fileformat']);
40 return false;
41 }
42 $thisfile_monkeysaudio_raw['nVersion'] = getid3_lib::LittleEndian2Int(substr($MACheaderData, 4, 2)); // appears to be uint32 in 3.98+
43
44 if ($thisfile_monkeysaudio_raw['nVersion'] < 3980) {
45 $thisfile_monkeysaudio_raw['nCompressionLevel'] = getid3_lib::LittleEndian2Int(substr($MACheaderData, 6, 2));
46 $thisfile_monkeysaudio_raw['nFormatFlags'] = getid3_lib::LittleEndian2Int(substr($MACheaderData, 8, 2));
47 $thisfile_monkeysaudio_raw['nChannels'] = getid3_lib::LittleEndian2Int(substr($MACheaderData, 10, 2));
48 $thisfile_monkeysaudio_raw['nSampleRate'] = getid3_lib::LittleEndian2Int(substr($MACheaderData, 12, 4));
49 $thisfile_monkeysaudio_raw['nHeaderDataBytes'] = getid3_lib::LittleEndian2Int(substr($MACheaderData, 16, 4));
50 $thisfile_monkeysaudio_raw['nWAVTerminatingBytes'] = getid3_lib::LittleEndian2Int(substr($MACheaderData, 20, 4));
51 $thisfile_monkeysaudio_raw['nTotalFrames'] = getid3_lib::LittleEndian2Int(substr($MACheaderData, 24, 4));
52 $thisfile_monkeysaudio_raw['nFinalFrameSamples'] = getid3_lib::LittleEndian2Int(substr($MACheaderData, 28, 4));
53 $thisfile_monkeysaudio_raw['nPeakLevel'] = getid3_lib::LittleEndian2Int(substr($MACheaderData, 32, 4));
54 $thisfile_monkeysaudio_raw['nSeekElements'] = getid3_lib::LittleEndian2Int(substr($MACheaderData, 38, 2));
55 $offset = 8;
56 } else {
57 $offset = 8;
58 // APE_DESCRIPTOR
59 $thisfile_monkeysaudio_raw['nDescriptorBytes'] = getid3_lib::LittleEndian2Int(substr($MACheaderData, $offset, 4));
60 $offset += 4;
61 $thisfile_monkeysaudio_raw['nHeaderBytes'] = getid3_lib::LittleEndian2Int(substr($MACheaderData, $offset, 4));
62 $offset += 4;
63 $thisfile_monkeysaudio_raw['nSeekTableBytes'] = getid3_lib::LittleEndian2Int(substr($MACheaderData, $offset, 4));
64 $offset += 4;
65 $thisfile_monkeysaudio_raw['nHeaderDataBytes'] = getid3_lib::LittleEndian2Int(substr($MACheaderData, $offset, 4));
66 $offset += 4;
67 $thisfile_monkeysaudio_raw['nAPEFrameDataBytes'] = getid3_lib::LittleEndian2Int(substr($MACheaderData, $offset, 4));
68 $offset += 4;
69 $thisfile_monkeysaudio_raw['nAPEFrameDataBytesHigh'] = getid3_lib::LittleEndian2Int(substr($MACheaderData, $offset, 4));
70 $offset += 4;
71 $thisfile_monkeysaudio_raw['nTerminatingDataBytes'] = getid3_lib::LittleEndian2Int(substr($MACheaderData, $offset, 4));
72 $offset += 4;
73 $thisfile_monkeysaudio_raw['cFileMD5'] = substr($MACheaderData, $offset, 16);
74 $offset += 16;
75
76 // APE_HEADER
77 $thisfile_monkeysaudio_raw['nCompressionLevel'] = getid3_lib::LittleEndian2Int(substr($MACheaderData, $offset, 2));
78 $offset += 2;
79 $thisfile_monkeysaudio_raw['nFormatFlags'] = getid3_lib::LittleEndian2Int(substr($MACheaderData, $offset, 2));
80 $offset += 2;
81 $thisfile_monkeysaudio_raw['nBlocksPerFrame'] = getid3_lib::LittleEndian2Int(substr($MACheaderData, $offset, 4));
82 $offset += 4;
83 $thisfile_monkeysaudio_raw['nFinalFrameBlocks'] = getid3_lib::LittleEndian2Int(substr($MACheaderData, $offset, 4));
84 $offset += 4;
85 $thisfile_monkeysaudio_raw['nTotalFrames'] = getid3_lib::LittleEndian2Int(substr($MACheaderData, $offset, 4));
86 $offset += 4;
87 $thisfile_monkeysaudio_raw['nBitsPerSample'] = getid3_lib::LittleEndian2Int(substr($MACheaderData, $offset, 2));
88 $offset += 2;
89 $thisfile_monkeysaudio_raw['nChannels'] = getid3_lib::LittleEndian2Int(substr($MACheaderData, $offset, 2));
90 $offset += 2;
91 $thisfile_monkeysaudio_raw['nSampleRate'] = getid3_lib::LittleEndian2Int(substr($MACheaderData, $offset, 4));
92 $offset += 4;
93 }
94
95 $thisfile_monkeysaudio['flags']['8-bit'] = (bool) ($thisfile_monkeysaudio_raw['nFormatFlags'] & 0x0001);
96 $thisfile_monkeysaudio['flags']['crc-32'] = (bool) ($thisfile_monkeysaudio_raw['nFormatFlags'] & 0x0002);
97 $thisfile_monkeysaudio['flags']['peak_level'] = (bool) ($thisfile_monkeysaudio_raw['nFormatFlags'] & 0x0004);
98 $thisfile_monkeysaudio['flags']['24-bit'] = (bool) ($thisfile_monkeysaudio_raw['nFormatFlags'] & 0x0008);
99 $thisfile_monkeysaudio['flags']['seek_elements'] = (bool) ($thisfile_monkeysaudio_raw['nFormatFlags'] & 0x0010);
100 $thisfile_monkeysaudio['flags']['no_wav_header'] = (bool) ($thisfile_monkeysaudio_raw['nFormatFlags'] & 0x0020);
101 $thisfile_monkeysaudio['version'] = $thisfile_monkeysaudio_raw['nVersion'] / 1000;
102 $thisfile_monkeysaudio['compression'] = $this->MonkeyCompressionLevelNameLookup($thisfile_monkeysaudio_raw['nCompressionLevel']);
103 if ($thisfile_monkeysaudio_raw['nVersion'] < 3980) {
104 $thisfile_monkeysaudio['samples_per_frame'] = $this->MonkeySamplesPerFrame($thisfile_monkeysaudio_raw['nVersion'], $thisfile_monkeysaudio_raw['nCompressionLevel']);
105 }
106 $thisfile_monkeysaudio['bits_per_sample'] = ($thisfile_monkeysaudio['flags']['24-bit'] ? 24 : ($thisfile_monkeysaudio['flags']['8-bit'] ? 8 : 16));
107 $thisfile_monkeysaudio['channels'] = $thisfile_monkeysaudio_raw['nChannels'];
108 $ThisFileInfo['audio']['channels'] = $thisfile_monkeysaudio['channels'];
109 $thisfile_monkeysaudio['sample_rate'] = $thisfile_monkeysaudio_raw['nSampleRate'];
110 if ($thisfile_monkeysaudio['sample_rate'] == 0) {
111 $ThisFileInfo['error'][] = 'Corrupt MAC file: frequency == zero';
112 return false;
113 }
114 $ThisFileInfo['audio']['sample_rate'] = $thisfile_monkeysaudio['sample_rate'];
115 if ($thisfile_monkeysaudio['flags']['peak_level']) {
116 $thisfile_monkeysaudio['peak_level'] = $thisfile_monkeysaudio_raw['nPeakLevel'];
117 $thisfile_monkeysaudio['peak_ratio'] = $thisfile_monkeysaudio['peak_level'] / pow(2, $thisfile_monkeysaudio['bits_per_sample'] - 1);
118 }
119 if ($thisfile_monkeysaudio_raw['nVersion'] >= 3980) {
120 $thisfile_monkeysaudio['samples'] = (($thisfile_monkeysaudio_raw['nTotalFrames'] - 1) * $thisfile_monkeysaudio_raw['nBlocksPerFrame']) + $thisfile_monkeysaudio_raw['nFinalFrameBlocks'];
121 } else {
122 $thisfile_monkeysaudio['samples'] = (($thisfile_monkeysaudio_raw['nTotalFrames'] - 1) * $thisfile_monkeysaudio['samples_per_frame']) + $thisfile_monkeysaudio_raw['nFinalFrameSamples'];
123 }
124 $thisfile_monkeysaudio['playtime'] = $thisfile_monkeysaudio['samples'] / $thisfile_monkeysaudio['sample_rate'];
125 if ($thisfile_monkeysaudio['playtime'] == 0) {
126 $ThisFileInfo['error'][] = 'Corrupt MAC file: playtime == zero';
127 return false;
128 }
129 $ThisFileInfo['playtime_seconds'] = $thisfile_monkeysaudio['playtime'];
130 $thisfile_monkeysaudio['compressed_size'] = $ThisFileInfo['avdataend'] - $ThisFileInfo['avdataoffset'];
131 $thisfile_monkeysaudio['uncompressed_size'] = $thisfile_monkeysaudio['samples'] * $thisfile_monkeysaudio['channels'] * ($thisfile_monkeysaudio['bits_per_sample'] / 8);
132 if ($thisfile_monkeysaudio['uncompressed_size'] == 0) {
133 $ThisFileInfo['error'][] = 'Corrupt MAC file: uncompressed_size == zero';
134 return false;
135 }
136 $thisfile_monkeysaudio['compression_ratio'] = $thisfile_monkeysaudio['compressed_size'] / ($thisfile_monkeysaudio['uncompressed_size'] + $thisfile_monkeysaudio_raw['nHeaderDataBytes']);
137 $thisfile_monkeysaudio['bitrate'] = (($thisfile_monkeysaudio['samples'] * $thisfile_monkeysaudio['channels'] * $thisfile_monkeysaudio['bits_per_sample']) / $thisfile_monkeysaudio['playtime']) * $thisfile_monkeysaudio['compression_ratio'];
138 $ThisFileInfo['audio']['bitrate'] = $thisfile_monkeysaudio['bitrate'];
139
140 // add size of MAC header to avdataoffset
141 if ($thisfile_monkeysaudio_raw['nVersion'] >= 3980) {
142 $ThisFileInfo['avdataoffset'] += $thisfile_monkeysaudio_raw['nDescriptorBytes'];
143 $ThisFileInfo['avdataoffset'] += $thisfile_monkeysaudio_raw['nHeaderBytes'];
144 $ThisFileInfo['avdataoffset'] += $thisfile_monkeysaudio_raw['nSeekTableBytes'];
145 $ThisFileInfo['avdataoffset'] += $thisfile_monkeysaudio_raw['nHeaderDataBytes'];
146
147 $ThisFileInfo['avdataend'] -= $thisfile_monkeysaudio_raw['nTerminatingDataBytes'];
148 } else {
149 $ThisFileInfo['avdataoffset'] += $offset;
150 }
151
152 if ($thisfile_monkeysaudio_raw['nVersion'] >= 3980) {
153 if ($thisfile_monkeysaudio_raw['cFileMD5'] === str_repeat("\x00", 16)) {
154 //$ThisFileInfo['warning'][] = 'cFileMD5 is null';
155 } else {
156 $ThisFileInfo['md5_data_source'] = '';
157 $md5 = $thisfile_monkeysaudio_raw['cFileMD5'];
158 for ($i = 0; $i < strlen($md5); $i++) {
159 $ThisFileInfo['md5_data_source'] .= str_pad(dechex(ord($md5{$i})), 2, '00', STR_PAD_LEFT);
160 }
161 if (!preg_match('/^[0-9a-f]{32}$/', $ThisFileInfo['md5_data_source'])) {
162 unset($ThisFileInfo['md5_data_source']);
163 }
164 }
165 }
166
167
168
169 $ThisFileInfo['audio']['bits_per_sample'] = $thisfile_monkeysaudio['bits_per_sample'];
170 $ThisFileInfo['audio']['encoder'] = 'MAC v'.number_format($thisfile_monkeysaudio['version'], 2);
171 $ThisFileInfo['audio']['encoder_options'] = ucfirst($thisfile_monkeysaudio['compression']).' compression';
172
173 return true;
174 }

References getid3_handler\fread(), getid3_handler\fseek(), getid3_lib\LittleEndian2Int(), MonkeyCompressionLevelNameLookup(), and MonkeySamplesPerFrame().

+ Here is the call graph for this function:

◆ MonkeyCompressionLevelNameLookup() [1/2]

getid3_monkey::MonkeyCompressionLevelNameLookup (   $compressionlevel)

Definition at line 176 of file module.audio.monkey.php.

176 {
177 static $MonkeyCompressionLevelNameLookup = array(
178 0 => 'unknown',
179 1000 => 'fast',
180 2000 => 'normal',
181 3000 => 'high',
182 4000 => 'extra-high',
183 5000 => 'insane'
184 );
185 return (isset($MonkeyCompressionLevelNameLookup[$compressionlevel]) ? $MonkeyCompressionLevelNameLookup[$compressionlevel] : 'invalid');
186 }

Referenced by Analyze(), and getid3_monkey().

+ Here is the caller graph for this function:

◆ MonkeyCompressionLevelNameLookup() [2/2]

getid3_monkey::MonkeyCompressionLevelNameLookup (   $compressionlevel)

Definition at line 180 of file module.audio.monkey.php.

180 {
181 static $MonkeyCompressionLevelNameLookup = array(
182 0 => 'unknown',
183 1000 => 'fast',
184 2000 => 'normal',
185 3000 => 'high',
186 4000 => 'extra-high',
187 5000 => 'insane'
188 );
189 return (isset($MonkeyCompressionLevelNameLookup[$compressionlevel]) ? $MonkeyCompressionLevelNameLookup[$compressionlevel] : 'invalid');
190 }

◆ MonkeySamplesPerFrame() [1/2]

getid3_monkey::MonkeySamplesPerFrame (   $versionid,
  $compressionlevel 
)

Definition at line 188 of file module.audio.monkey.php.

188 {
189 if ($versionid >= 3950) {
190 return 73728 * 4;
191 } elseif ($versionid >= 3900) {
192 return 73728;
193 } elseif (($versionid >= 3800) && ($compressionlevel == 4000)) {
194 return 73728;
195 } else {
196 return 9216;
197 }
198 }

Referenced by Analyze(), and getid3_monkey().

+ Here is the caller graph for this function:

◆ MonkeySamplesPerFrame() [2/2]

getid3_monkey::MonkeySamplesPerFrame (   $versionid,
  $compressionlevel 
)

Definition at line 192 of file module.audio.monkey.php.

192 {
193 if ($versionid >= 3950) {
194 return 73728 * 4;
195 } elseif ($versionid >= 3900) {
196 return 73728;
197 } elseif (($versionid >= 3800) && ($compressionlevel == 4000)) {
198 return 73728;
199 } else {
200 return 9216;
201 }
202 }
The documentation for this class was generated from the following files: