ILIAS  release_5-1 Revision 5.0.0-5477-g43f3e3fab5f
Public Member Functions
getid3_au Class Reference

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

+ Inheritance diagram for getid3_au:
+ Collaboration diagram for getid3_au:

Public Member Functions

 getid3_au (&$fd, &$ThisFileInfo)
 
 AUdataFormatNameLookup ($id)
 
 AUdataFormatBitsPerSampleLookup ($id)
 
 AUdataFormatUsedBitsPerSampleLookup ($id)
 
 Analyze ()
 
 AUdataFormatNameLookup ($id)
 
 AUdataFormatBitsPerSampleLookup ($id)
 
 AUdataFormatUsedBitsPerSampleLookup ($id)
 
- 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.au.php.

Member Function Documentation

◆ Analyze()

getid3_au::Analyze ( )

Reimplemented from getid3_handler.

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

21 {
22 $info = &$this->getid3->info;
23
24 $this->fseek($info['avdataoffset']);
25 $AUheader = $this->fread(8);
26
27 $magic = '.snd';
28 if (substr($AUheader, 0, 4) != $magic) {
29 $info['error'][] = 'Expecting "'.getid3_lib::PrintHexBytes($magic).'" (".snd") at offset '.$info['avdataoffset'].', found "'.getid3_lib::PrintHexBytes(substr($AUheader, 0, 4)).'"';
30 return false;
31 }
32
33 // shortcut
34 $info['au'] = array();
35 $thisfile_au = &$info['au'];
36
37 $info['fileformat'] = 'au';
38 $info['audio']['dataformat'] = 'au';
39 $info['audio']['bitrate_mode'] = 'cbr';
40 $thisfile_au['encoding'] = 'ISO-8859-1';
41
42 $thisfile_au['header_length'] = getid3_lib::BigEndian2Int(substr($AUheader, 4, 4));
43 $AUheader .= $this->fread($thisfile_au['header_length'] - 8);
44 $info['avdataoffset'] += $thisfile_au['header_length'];
45
46 $thisfile_au['data_size'] = getid3_lib::BigEndian2Int(substr($AUheader, 8, 4));
47 $thisfile_au['data_format_id'] = getid3_lib::BigEndian2Int(substr($AUheader, 12, 4));
48 $thisfile_au['sample_rate'] = getid3_lib::BigEndian2Int(substr($AUheader, 16, 4));
49 $thisfile_au['channels'] = getid3_lib::BigEndian2Int(substr($AUheader, 20, 4));
50 $thisfile_au['comments']['comment'][] = trim(substr($AUheader, 24));
51
52 $thisfile_au['data_format'] = $this->AUdataFormatNameLookup($thisfile_au['data_format_id']);
53 $thisfile_au['used_bits_per_sample'] = $this->AUdataFormatUsedBitsPerSampleLookup($thisfile_au['data_format_id']);
54 if ($thisfile_au['bits_per_sample'] = $this->AUdataFormatBitsPerSampleLookup($thisfile_au['data_format_id'])) {
55 $info['audio']['bits_per_sample'] = $thisfile_au['bits_per_sample'];
56 } else {
57 unset($thisfile_au['bits_per_sample']);
58 }
59
60 $info['audio']['sample_rate'] = $thisfile_au['sample_rate'];
61 $info['audio']['channels'] = $thisfile_au['channels'];
62
63 if (($info['avdataoffset'] + $thisfile_au['data_size']) > $info['avdataend']) {
64 $info['warning'][] = 'Possible truncated file - expecting "'.$thisfile_au['data_size'].'" bytes of audio data, only found '.($info['avdataend'] - $info['avdataoffset']).' bytes"';
65 }
66
67 $info['playtime_seconds'] = $thisfile_au['data_size'] / ($thisfile_au['sample_rate'] * $thisfile_au['channels'] * ($thisfile_au['used_bits_per_sample'] / 8));
68 $info['audio']['bitrate'] = ($thisfile_au['data_size'] * 8) / $info['playtime_seconds'];
69
70 return true;
71 }
getid3_au\AUdataFormatBitsPerSampleLookup
AUdataFormatBitsPerSampleLookup($id)
Definition: module.audio.au.php:104
getid3_au\AUdataFormatUsedBitsPerSampleLookup
AUdataFormatUsedBitsPerSampleLookup($id)
Definition: module.audio.au.php:132
getid3_au\AUdataFormatNameLookup
AUdataFormatNameLookup($id)
Definition: module.audio.au.php:70
getid3_handler\fseek
fseek($bytes, $whence=SEEK_SET)
Definition: getid3.php:1697
getid3_handler\fread
fread($bytes)
Definition: getid3.php:1685
getid3_lib\BigEndian2Int
BigEndian2Int($byteword, $synchsafe=false, $signed=false)
Definition: getid3.lib.php:234
getid3_lib\PrintHexBytes
PrintHexBytes($string, $hex=true, $spaces=true, $htmlsafe=true)
Definition: getid3.lib.php:17
$info
$info
Definition: example_052.php:80

References $info, AUdataFormatBitsPerSampleLookup(), AUdataFormatNameLookup(), AUdataFormatUsedBitsPerSampleLookup(), getid3_lib\BigEndian2Int(), getid3_handler\fread(), getid3_handler\fseek(), and getid3_lib\PrintHexBytes().

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◆ AUdataFormatBitsPerSampleLookup() [1/2]

getid3_au::AUdataFormatBitsPerSampleLookup (   $id)

Definition at line 104 of file module.audio.au.php.

104 {
105 static $AUdataFormatBitsPerSampleLookup = array(
106 1 => 8,
107 2 => 8,
108 3 => 16,
109 4 => 24,
110 5 => 32,
111 6 => 32,
112 7 => 64,
113
114 11 => 8,
115 12 => 16,
116 13 => 24,
117 14 => 32,
118
119 18 => 16,
120 19 => 16,
121 20 => 16,
122
123 23 => 16,
124
125 25 => 16,
126 26 => 16,
127 27 => 8
128 );
129 return (isset($AUdataFormatBitsPerSampleLookup[$id]) ? $AUdataFormatBitsPerSampleLookup[$id] : false);
130 }

Referenced by Analyze(), and getid3_au().

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◆ AUdataFormatBitsPerSampleLookup() [2/2]

getid3_au::AUdataFormatBitsPerSampleLookup (   $id)

Definition at line 107 of file module.audio.au.php.

107 {
108 static $AUdataFormatBitsPerSampleLookup = array(
109 1 => 8,
110 2 => 8,
111 3 => 16,
112 4 => 24,
113 5 => 32,
114 6 => 32,
115 7 => 64,
116
117 11 => 8,
118 12 => 16,
119 13 => 24,
120 14 => 32,
121
122 18 => 16,
123 19 => 16,
124 20 => 16,
125
126 23 => 16,
127
128 25 => 16,
129 26 => 16,
130 27 => 8
131 );
132 return (isset($AUdataFormatBitsPerSampleLookup[$id]) ? $AUdataFormatBitsPerSampleLookup[$id] : false);
133 }

◆ AUdataFormatNameLookup() [1/2]

getid3_au::AUdataFormatNameLookup (   $id)

Definition at line 70 of file module.audio.au.php.

70 {
71 static $AUdataFormatNameLookup = array(
72 0 => 'unspecified format',
73 1 => '8-bit mu-law',
74 2 => '8-bit linear',
75 3 => '16-bit linear',
76 4 => '24-bit linear',
77 5 => '32-bit linear',
78 6 => 'floating-point',
79 7 => 'double-precision float',
80 8 => 'fragmented sampled data',
81 9 => 'SUN_FORMAT_NESTED',
82 10 => 'DSP program',
83 11 => '8-bit fixed-point',
84 12 => '16-bit fixed-point',
85 13 => '24-bit fixed-point',
86 14 => '32-bit fixed-point',
87
88 16 => 'non-audio display data',
89 17 => 'SND_FORMAT_MULAW_SQUELCH',
90 18 => '16-bit linear with emphasis',
91 19 => '16-bit linear with compression',
92 20 => '16-bit linear with emphasis + compression',
93 21 => 'Music Kit DSP commands',
94 22 => 'SND_FORMAT_DSP_COMMANDS_SAMPLES',
95 23 => 'CCITT g.721 4-bit ADPCM',
96 24 => 'CCITT g.722 ADPCM',
97 25 => 'CCITT g.723 3-bit ADPCM',
98 26 => 'CCITT g.723 5-bit ADPCM',
99 27 => 'A-Law 8-bit'
100 );
101 return (isset($AUdataFormatNameLookup[$id]) ? $AUdataFormatNameLookup[$id] : false);
102 }

Referenced by Analyze(), and getid3_au().

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◆ AUdataFormatNameLookup() [2/2]

getid3_au::AUdataFormatNameLookup (   $id)

Definition at line 73 of file module.audio.au.php.

73 {
74 static $AUdataFormatNameLookup = array(
75 0 => 'unspecified format',
76 1 => '8-bit mu-law',
77 2 => '8-bit linear',
78 3 => '16-bit linear',
79 4 => '24-bit linear',
80 5 => '32-bit linear',
81 6 => 'floating-point',
82 7 => 'double-precision float',
83 8 => 'fragmented sampled data',
84 9 => 'SUN_FORMAT_NESTED',
85 10 => 'DSP program',
86 11 => '8-bit fixed-point',
87 12 => '16-bit fixed-point',
88 13 => '24-bit fixed-point',
89 14 => '32-bit fixed-point',
90
91 16 => 'non-audio display data',
92 17 => 'SND_FORMAT_MULAW_SQUELCH',
93 18 => '16-bit linear with emphasis',
94 19 => '16-bit linear with compression',
95 20 => '16-bit linear with emphasis + compression',
96 21 => 'Music Kit DSP commands',
97 22 => 'SND_FORMAT_DSP_COMMANDS_SAMPLES',
98 23 => 'CCITT g.721 4-bit ADPCM',
99 24 => 'CCITT g.722 ADPCM',
100 25 => 'CCITT g.723 3-bit ADPCM',
101 26 => 'CCITT g.723 5-bit ADPCM',
102 27 => 'A-Law 8-bit'
103 );
104 return (isset($AUdataFormatNameLookup[$id]) ? $AUdataFormatNameLookup[$id] : false);
105 }

◆ AUdataFormatUsedBitsPerSampleLookup() [1/2]

getid3_au::AUdataFormatUsedBitsPerSampleLookup (   $id)

Definition at line 132 of file module.audio.au.php.

132 {
133 static $AUdataFormatUsedBitsPerSampleLookup = array(
134 1 => 8,
135 2 => 8,
136 3 => 16,
137 4 => 24,
138 5 => 32,
139 6 => 32,
140 7 => 64,
141
142 11 => 8,
143 12 => 16,
144 13 => 24,
145 14 => 32,
146
147 18 => 16,
148 19 => 16,
149 20 => 16,
150
151 23 => 4,
152
153 25 => 3,
154 26 => 5,
155 27 => 8,
156 );
157 return (isset($AUdataFormatUsedBitsPerSampleLookup[$id]) ? $AUdataFormatUsedBitsPerSampleLookup[$id] : false);
158 }

Referenced by Analyze(), and getid3_au().

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◆ AUdataFormatUsedBitsPerSampleLookup() [2/2]

getid3_au::AUdataFormatUsedBitsPerSampleLookup (   $id)

Definition at line 135 of file module.audio.au.php.

135 {
136 static $AUdataFormatUsedBitsPerSampleLookup = array(
137 1 => 8,
138 2 => 8,
139 3 => 16,
140 4 => 24,
141 5 => 32,
142 6 => 32,
143 7 => 64,
144
145 11 => 8,
146 12 => 16,
147 13 => 24,
148 14 => 32,
149
150 18 => 16,
151 19 => 16,
152 20 => 16,
153
154 23 => 4,
155
156 25 => 3,
157 26 => 5,
158 27 => 8,
159 );
160 return (isset($AUdataFormatUsedBitsPerSampleLookup[$id]) ? $AUdataFormatUsedBitsPerSampleLookup[$id] : false);
161 }

◆ getid3_au()

getid3_au::getid3_au ( &  $fd,
&  $ThisFileInfo 
)

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

20 {
21
22 fseek($fd, $ThisFileInfo['avdataoffset'], SEEK_SET);
23 $AUheader = fread($fd, 8);
24
25 if (substr($AUheader, 0, 4) != '.snd') {
26 $ThisFileInfo['error'][] = 'Expecting ".snd" at offset '.$ThisFileInfo['avdataoffset'].', found "'.substr($AUheader, 0, 4).'"';
27 return false;
28 }
29
30 // shortcut
31 $ThisFileInfo['au'] = array();
32 $thisfile_au = &$ThisFileInfo['au'];
33
34 $ThisFileInfo['fileformat'] = 'au';
35 $ThisFileInfo['audio']['dataformat'] = 'au';
36 $ThisFileInfo['audio']['bitrate_mode'] = 'cbr';
37 $thisfile_au['encoding'] = 'ISO-8859-1';
38
39 $thisfile_au['header_length'] = getid3_lib::BigEndian2Int(substr($AUheader, 4, 4));
40 $AUheader .= fread($fd, $thisfile_au['header_length'] - 8);
41 $ThisFileInfo['avdataoffset'] += $thisfile_au['header_length'];
42
43 $thisfile_au['data_size'] = getid3_lib::BigEndian2Int(substr($AUheader, 8, 4));
44 $thisfile_au['data_format_id'] = getid3_lib::BigEndian2Int(substr($AUheader, 12, 4));
45 $thisfile_au['sample_rate'] = getid3_lib::BigEndian2Int(substr($AUheader, 16, 4));
46 $thisfile_au['channels'] = getid3_lib::BigEndian2Int(substr($AUheader, 20, 4));
47 $thisfile_au['comments']['comment'][] = trim(substr($AUheader, 24));
48
49 $thisfile_au['data_format'] = $this->AUdataFormatNameLookup($thisfile_au['data_format_id']);
50 $thisfile_au['used_bits_per_sample'] = $this->AUdataFormatUsedBitsPerSampleLookup($thisfile_au['data_format_id']);
51 if ($thisfile_au['bits_per_sample'] = $this->AUdataFormatBitsPerSampleLookup($thisfile_au['data_format_id'])) {
52 $ThisFileInfo['audio']['bits_per_sample'] = $thisfile_au['bits_per_sample'];
53 } else {
54 unset($thisfile_au['bits_per_sample']);
55 }
56
57 $ThisFileInfo['audio']['sample_rate'] = $thisfile_au['sample_rate'];
58 $ThisFileInfo['audio']['channels'] = $thisfile_au['channels'];
59
60 if (($ThisFileInfo['avdataoffset'] + $thisfile_au['data_size']) > $ThisFileInfo['avdataend']) {
61 $ThisFileInfo['warning'][] = 'Possible truncated file - expecting "'.$thisfile_au['data_size'].'" bytes of audio data, only found '.($ThisFileInfo['avdataend'] - $ThisFileInfo['avdataoffset']).' bytes"';
62 }
63
64 $ThisFileInfo['playtime_seconds'] = $thisfile_au['data_size'] / ($thisfile_au['sample_rate'] * $thisfile_au['channels'] * ($thisfile_au['used_bits_per_sample'] / 8));
65 $ThisFileInfo['audio']['bitrate'] = ($thisfile_au['data_size'] * 8) / $ThisFileInfo['playtime_seconds'];
66
67 return true;
68 }

References AUdataFormatBitsPerSampleLookup(), AUdataFormatNameLookup(), AUdataFormatUsedBitsPerSampleLookup(), getid3_lib\BigEndian2Int(), getid3_handler\fread(), and getid3_handler\fseek().

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The documentation for this class was generated from the following files: