diff options
Diffstat (limited to 'getid3/module.audio.rkau.php')
| -rw-r--r-- | getid3/module.audio.rkau.php | 92 |
1 files changed, 0 insertions, 92 deletions
diff --git a/getid3/module.audio.rkau.php b/getid3/module.audio.rkau.php deleted file mode 100644 index 0e344d4..0000000 --- a/getid3/module.audio.rkau.php +++ /dev/null @@ -1,92 +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.shorten.php // -// module for analyzing Shorten Audio files // -// dependencies: NONE // -// /// -///////////////////////////////////////////////////////////////// - - -class getid3_rkau -{ - - function getid3_rkau(&$fd, &$ThisFileInfo) { - - fseek($fd, $ThisFileInfo['avdataoffset'], SEEK_SET); - $RKAUHeader = fread($fd, 20); - if (substr($RKAUHeader, 0, 3) != 'RKA') { - $ThisFileInfo['error'][] = 'Expecting "RKA" at offset '.$ThisFileInfo['avdataoffset'].', found "'.substr($RKAUHeader, 0, 3).'"'; - return false; - } - - $ThisFileInfo['fileformat'] = 'rkau'; - $ThisFileInfo['audio']['dataformat'] = 'rkau'; - $ThisFileInfo['audio']['bitrate_mode'] = 'vbr'; - - $ThisFileInfo['rkau']['raw']['version'] = getid3_lib::LittleEndian2Int(substr($RKAUHeader, 3, 1)); - $ThisFileInfo['rkau']['version'] = '1.'.str_pad($ThisFileInfo['rkau']['raw']['version'] & 0x0F, 2, '0', STR_PAD_LEFT); - if (($ThisFileInfo['rkau']['version'] > 1.07) || ($ThisFileInfo['rkau']['version'] < 1.06)) { - $ThisFileInfo['error'][] = 'This version of getID3() can only parse RKAU files v1.06 and 1.07 (this file is v'.$ThisFileInfo['rkau']['version'].')'; - unset($ThisFileInfo['rkau']); - return false; - } - - $ThisFileInfo['rkau']['source_bytes'] = getid3_lib::LittleEndian2Int(substr($RKAUHeader, 4, 4)); - $ThisFileInfo['rkau']['sample_rate'] = getid3_lib::LittleEndian2Int(substr($RKAUHeader, 8, 4)); - $ThisFileInfo['rkau']['channels'] = getid3_lib::LittleEndian2Int(substr($RKAUHeader, 12, 1)); - $ThisFileInfo['rkau']['bits_per_sample'] = getid3_lib::LittleEndian2Int(substr($RKAUHeader, 13, 1)); - - $ThisFileInfo['rkau']['raw']['quality'] = getid3_lib::LittleEndian2Int(substr($RKAUHeader, 14, 1)); - $this->RKAUqualityLookup($ThisFileInfo['rkau']); - - $ThisFileInfo['rkau']['raw']['flags'] = getid3_lib::LittleEndian2Int(substr($RKAUHeader, 15, 1)); - $ThisFileInfo['rkau']['flags']['joint_stereo'] = (bool) (!($ThisFileInfo['rkau']['raw']['flags'] & 0x01)); - $ThisFileInfo['rkau']['flags']['streaming'] = (bool) ($ThisFileInfo['rkau']['raw']['flags'] & 0x02); - $ThisFileInfo['rkau']['flags']['vrq_lossy_mode'] = (bool) ($ThisFileInfo['rkau']['raw']['flags'] & 0x04); - - if ($ThisFileInfo['rkau']['flags']['streaming']) { - $ThisFileInfo['avdataoffset'] += 20; - $ThisFileInfo['rkau']['compressed_bytes'] = getid3_lib::LittleEndian2Int(substr($RKAUHeader, 16, 4)); - } else { - $ThisFileInfo['avdataoffset'] += 16; - $ThisFileInfo['rkau']['compressed_bytes'] = $ThisFileInfo['avdataend'] - $ThisFileInfo['avdataoffset'] - 1; - } - // Note: compressed_bytes does not always equal what appears to be the actual number of compressed bytes, - // sometimes it's more, sometimes less. No idea why(?) - - $ThisFileInfo['audio']['lossless'] = $ThisFileInfo['rkau']['lossless']; - $ThisFileInfo['audio']['channels'] = $ThisFileInfo['rkau']['channels']; - $ThisFileInfo['audio']['bits_per_sample'] = $ThisFileInfo['rkau']['bits_per_sample']; - $ThisFileInfo['audio']['sample_rate'] = $ThisFileInfo['rkau']['sample_rate']; - - $ThisFileInfo['playtime_seconds'] = $ThisFileInfo['rkau']['source_bytes'] / ($ThisFileInfo['rkau']['sample_rate'] * $ThisFileInfo['rkau']['channels'] * ($ThisFileInfo['rkau']['bits_per_sample'] / 8)); - $ThisFileInfo['audio']['bitrate'] = ($ThisFileInfo['rkau']['compressed_bytes'] * 8) / $ThisFileInfo['playtime_seconds']; - - return true; - - } - - - function RKAUqualityLookup(&$RKAUdata) { - $level = ($RKAUdata['raw']['quality'] & 0xF0) >> 4; - $quality = $RKAUdata['raw']['quality'] & 0x0F; - - $RKAUdata['lossless'] = (($quality == 0) ? true : false); - $RKAUdata['compression_level'] = $level + 1; - if (!$RKAUdata['lossless']) { - $RKAUdata['quality_setting'] = $quality; - } - - return true; - } - -} - -?>
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