/usr/share/php/getid3/module.audio.tta.php is in php-getid3 1.9.8-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 | <?php
/////////////////////////////////////////////////////////////////
/// getID3() by James Heinrich <info@getid3.org> //
// available at http://getid3.sourceforge.net //
// or http://www.getid3.org //
// also https://github.com/JamesHeinrich/getID3 //
/////////////////////////////////////////////////////////////////
// See readme.txt for more details //
/////////////////////////////////////////////////////////////////
// //
// module.audio.tta.php //
// module for analyzing TTA Audio files //
// dependencies: NONE //
// ///
/////////////////////////////////////////////////////////////////
class getid3_tta extends getid3_handler
{
public function Analyze() {
$info = &$this->getid3->info;
$info['fileformat'] = 'tta';
$info['audio']['dataformat'] = 'tta';
$info['audio']['lossless'] = true;
$info['audio']['bitrate_mode'] = 'vbr';
$this->fseek($info['avdataoffset']);
$ttaheader = $this->fread(26);
$info['tta']['magic'] = substr($ttaheader, 0, 3);
$magic = 'TTA';
if ($info['tta']['magic'] != $magic) {
$info['error'][] = 'Expecting "'.getid3_lib::PrintHexBytes($magic).'" at offset '.$info['avdataoffset'].', found "'.getid3_lib::PrintHexBytes($info['tta']['magic']).'"';
unset($info['fileformat']);
unset($info['audio']);
unset($info['tta']);
return false;
}
switch ($ttaheader{3}) {
case "\x01": // TTA v1.x
case "\x02": // TTA v1.x
case "\x03": // TTA v1.x
// "It was the demo-version of the TTA encoder. There is no released format with such header. TTA encoder v1 is not supported about a year."
$info['tta']['major_version'] = 1;
$info['avdataoffset'] += 16;
$info['tta']['compression_level'] = ord($ttaheader{3});
$info['tta']['channels'] = getid3_lib::LittleEndian2Int(substr($ttaheader, 4, 2));
$info['tta']['bits_per_sample'] = getid3_lib::LittleEndian2Int(substr($ttaheader, 6, 2));
$info['tta']['sample_rate'] = getid3_lib::LittleEndian2Int(substr($ttaheader, 8, 4));
$info['tta']['samples_per_channel'] = getid3_lib::LittleEndian2Int(substr($ttaheader, 12, 4));
$info['audio']['encoder_options'] = '-e'.$info['tta']['compression_level'];
$info['playtime_seconds'] = $info['tta']['samples_per_channel'] / $info['tta']['sample_rate'];
break;
case '2': // TTA v2.x
// "I have hurried to release the TTA 2.0 encoder. Format documentation is removed from our site. This format still in development. Please wait the TTA2 format, encoder v4."
$info['tta']['major_version'] = 2;
$info['avdataoffset'] += 20;
$info['tta']['compression_level'] = getid3_lib::LittleEndian2Int(substr($ttaheader, 4, 2));
$info['tta']['audio_format'] = getid3_lib::LittleEndian2Int(substr($ttaheader, 6, 2));
$info['tta']['channels'] = getid3_lib::LittleEndian2Int(substr($ttaheader, 8, 2));
$info['tta']['bits_per_sample'] = getid3_lib::LittleEndian2Int(substr($ttaheader, 10, 2));
$info['tta']['sample_rate'] = getid3_lib::LittleEndian2Int(substr($ttaheader, 12, 4));
$info['tta']['data_length'] = getid3_lib::LittleEndian2Int(substr($ttaheader, 16, 4));
$info['audio']['encoder_options'] = '-e'.$info['tta']['compression_level'];
$info['playtime_seconds'] = $info['tta']['data_length'] / $info['tta']['sample_rate'];
break;
case '1': // TTA v3.x
// "This is a first stable release of the TTA format. It will be supported by the encoders v3 or higher."
$info['tta']['major_version'] = 3;
$info['avdataoffset'] += 26;
$info['tta']['audio_format'] = getid3_lib::LittleEndian2Int(substr($ttaheader, 4, 2)); // getid3_riff::wFormatTagLookup()
$info['tta']['channels'] = getid3_lib::LittleEndian2Int(substr($ttaheader, 6, 2));
$info['tta']['bits_per_sample'] = getid3_lib::LittleEndian2Int(substr($ttaheader, 8, 2));
$info['tta']['sample_rate'] = getid3_lib::LittleEndian2Int(substr($ttaheader, 10, 4));
$info['tta']['data_length'] = getid3_lib::LittleEndian2Int(substr($ttaheader, 14, 4));
$info['tta']['crc32_footer'] = substr($ttaheader, 18, 4);
$info['tta']['seek_point'] = getid3_lib::LittleEndian2Int(substr($ttaheader, 22, 4));
$info['playtime_seconds'] = $info['tta']['data_length'] / $info['tta']['sample_rate'];
break;
default:
$info['error'][] = 'This version of getID3() ['.$this->getid3->version().'] only knows how to handle TTA v1 and v2 - it may not work correctly with this file which appears to be TTA v'.$ttaheader{3};
return false;
break;
}
$info['audio']['encoder'] = 'TTA v'.$info['tta']['major_version'];
$info['audio']['bits_per_sample'] = $info['tta']['bits_per_sample'];
$info['audio']['sample_rate'] = $info['tta']['sample_rate'];
$info['audio']['channels'] = $info['tta']['channels'];
$info['audio']['bitrate'] = (($info['avdataend'] - $info['avdataoffset']) * 8) / $info['playtime_seconds'];
return true;
}
}
|