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Diffstat (limited to 'getid3/module.audio.tta.php')
| -rw-r--r-- | getid3/module.audio.tta.php | 107 |
1 files changed, 0 insertions, 107 deletions
diff --git a/getid3/module.audio.tta.php b/getid3/module.audio.tta.php deleted file mode 100644 index 903de6b..0000000 --- a/getid3/module.audio.tta.php +++ /dev/null @@ -1,107 +0,0 @@ -<?php -///////////////////////////////////////////////////////////////// -/// getID3() by James Heinrich <info@getid3.org> // -// available at http://getid3.sourceforge.net // -// or http://www.getid3.org // -///////////////////////////////////////////////////////////////// -// See readme.txt for more details // -///////////////////////////////////////////////////////////////// -// // -// module.audio.tta.php // -// module for analyzing TTA Audio files // -// dependencies: NONE // -// /// -///////////////////////////////////////////////////////////////// - - -class getid3_tta -{ - - function getid3_tta(&$fd, &$ThisFileInfo) { - - $ThisFileInfo['fileformat'] = 'tta'; - $ThisFileInfo['audio']['dataformat'] = 'tta'; - $ThisFileInfo['audio']['lossless'] = true; - $ThisFileInfo['audio']['bitrate_mode'] = 'vbr'; - - fseek($fd, $ThisFileInfo['avdataoffset'], SEEK_SET); - $ttaheader = fread($fd, 26); - - $ThisFileInfo['tta']['magic'] = substr($ttaheader, 0, 3); - if ($ThisFileInfo['tta']['magic'] != 'TTA') { - $ThisFileInfo['error'][] = 'Expecting "TTA" at offset '.$ThisFileInfo['avdataoffset'].', found "'.$ThisFileInfo['tta']['magic'].'"'; - unset($ThisFileInfo['fileformat']); - unset($ThisFileInfo['audio']); - unset($ThisFileInfo['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." - $ThisFileInfo['tta']['major_version'] = 1; - $ThisFileInfo['avdataoffset'] += 16; - - $ThisFileInfo['tta']['compression_level'] = ord($ttaheader{3}); - $ThisFileInfo['tta']['channels'] = getid3_lib::LittleEndian2Int(substr($ttaheader, 4, 2)); - $ThisFileInfo['tta']['bits_per_sample'] = getid3_lib::LittleEndian2Int(substr($ttaheader, 6, 2)); - $ThisFileInfo['tta']['sample_rate'] = getid3_lib::LittleEndian2Int(substr($ttaheader, 8, 4)); - $ThisFileInfo['tta']['samples_per_channel'] = getid3_lib::LittleEndian2Int(substr($ttaheader, 12, 4)); - - $ThisFileInfo['audio']['encoder_options'] = '-e'.$ThisFileInfo['tta']['compression_level']; - $ThisFileInfo['playtime_seconds'] = $ThisFileInfo['tta']['samples_per_channel'] / $ThisFileInfo['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." - $ThisFileInfo['tta']['major_version'] = 2; - $ThisFileInfo['avdataoffset'] += 20; - - $ThisFileInfo['tta']['compression_level'] = getid3_lib::LittleEndian2Int(substr($ttaheader, 4, 2)); - $ThisFileInfo['tta']['audio_format'] = getid3_lib::LittleEndian2Int(substr($ttaheader, 6, 2)); - $ThisFileInfo['tta']['channels'] = getid3_lib::LittleEndian2Int(substr($ttaheader, 8, 2)); - $ThisFileInfo['tta']['bits_per_sample'] = getid3_lib::LittleEndian2Int(substr($ttaheader, 10, 2)); - $ThisFileInfo['tta']['sample_rate'] = getid3_lib::LittleEndian2Int(substr($ttaheader, 12, 4)); - $ThisFileInfo['tta']['data_length'] = getid3_lib::LittleEndian2Int(substr($ttaheader, 16, 4)); - - $ThisFileInfo['audio']['encoder_options'] = '-e'.$ThisFileInfo['tta']['compression_level']; - $ThisFileInfo['playtime_seconds'] = $ThisFileInfo['tta']['data_length'] / $ThisFileInfo['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." - $ThisFileInfo['tta']['major_version'] = 3; - $ThisFileInfo['avdataoffset'] += 26; - - $ThisFileInfo['tta']['audio_format'] = getid3_lib::LittleEndian2Int(substr($ttaheader, 4, 2)); // getid3_riff::RIFFwFormatTagLookup() - $ThisFileInfo['tta']['channels'] = getid3_lib::LittleEndian2Int(substr($ttaheader, 6, 2)); - $ThisFileInfo['tta']['bits_per_sample'] = getid3_lib::LittleEndian2Int(substr($ttaheader, 8, 2)); - $ThisFileInfo['tta']['sample_rate'] = getid3_lib::LittleEndian2Int(substr($ttaheader, 10, 4)); - $ThisFileInfo['tta']['data_length'] = getid3_lib::LittleEndian2Int(substr($ttaheader, 14, 4)); - $ThisFileInfo['tta']['crc32_footer'] = substr($ttaheader, 18, 4); - $ThisFileInfo['tta']['seek_point'] = getid3_lib::LittleEndian2Int(substr($ttaheader, 22, 4)); - - $ThisFileInfo['playtime_seconds'] = $ThisFileInfo['tta']['data_length'] / $ThisFileInfo['tta']['sample_rate']; - break; - - default: - $ThisFileInfo['error'][] = 'This version of getID3() only knows how to handle TTA v1 and v2 - it may not work correctly with this file which appears to be TTA v'.$ttaheader{3}; - return false; - break; - } - - $ThisFileInfo['audio']['encoder'] = 'TTA v'.$ThisFileInfo['tta']['major_version']; - $ThisFileInfo['audio']['bits_per_sample'] = $ThisFileInfo['tta']['bits_per_sample']; - $ThisFileInfo['audio']['sample_rate'] = $ThisFileInfo['tta']['sample_rate']; - $ThisFileInfo['audio']['channels'] = $ThisFileInfo['tta']['channels']; - $ThisFileInfo['audio']['bitrate'] = (($ThisFileInfo['avdataend'] - $ThisFileInfo['avdataoffset']) * 8) / $ThisFileInfo['playtime_seconds']; - - return true; - } - -} - - -?>
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