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Diffstat (limited to 'getid3/module.audio.vqf.php')
| -rw-r--r-- | getid3/module.audio.vqf.php | 159 |
1 files changed, 0 insertions, 159 deletions
diff --git a/getid3/module.audio.vqf.php b/getid3/module.audio.vqf.php deleted file mode 100644 index 49d4e85..0000000 --- a/getid3/module.audio.vqf.php +++ /dev/null @@ -1,159 +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.vqf.php // -// module for analyzing VQF audio files // -// dependencies: NONE // -// /// -///////////////////////////////////////////////////////////////// - - -class getid3_vqf -{ - function getid3_vqf(&$fd, &$ThisFileInfo) { - // based loosely on code from TTwinVQ by Jurgen Faul <jfaulØgmx*de> - // http://jfaul.de/atl or http://j-faul.virtualave.net/atl/atl.html - - $ThisFileInfo['fileformat'] = 'vqf'; - $ThisFileInfo['audio']['dataformat'] = 'vqf'; - $ThisFileInfo['audio']['bitrate_mode'] = 'cbr'; - $ThisFileInfo['audio']['lossless'] = false; - - // shortcut - $ThisFileInfo['vqf']['raw'] = array(); - $thisfile_vqf = &$ThisFileInfo['vqf']; - $thisfile_vqf_raw = &$thisfile_vqf['raw']; - - fseek($fd, $ThisFileInfo['avdataoffset'], SEEK_SET); - $VQFheaderData = fread($fd, 16); - - $offset = 0; - $thisfile_vqf_raw['header_tag'] = substr($VQFheaderData, $offset, 4); - if ($thisfile_vqf_raw['header_tag'] != 'TWIN') { - $ThisFileInfo['error'][] = 'Expecting "TWIN" at offset '.$ThisFileInfo['avdataoffset'].', found "'.$thisfile_vqf_raw['header_tag'].'"'; - unset($ThisFileInfo['vqf']); - unset($ThisFileInfo['fileformat']); - return false; - } - $offset += 4; - $thisfile_vqf_raw['version'] = substr($VQFheaderData, $offset, 8); - $offset += 8; - $thisfile_vqf_raw['size'] = getid3_lib::BigEndian2Int(substr($VQFheaderData, $offset, 4)); - $offset += 4; - - while (ftell($fd) < $ThisFileInfo['avdataend']) { - - $ChunkBaseOffset = ftell($fd); - $chunkoffset = 0; - $ChunkData = fread($fd, 8); - $ChunkName = substr($ChunkData, $chunkoffset, 4); - if ($ChunkName == 'DATA') { - $ThisFileInfo['avdataoffset'] = $ChunkBaseOffset; - break; - } - $chunkoffset += 4; - $ChunkSize = getid3_lib::BigEndian2Int(substr($ChunkData, $chunkoffset, 4)); - $chunkoffset += 4; - if ($ChunkSize > ($ThisFileInfo['avdataend'] - ftell($fd))) { - $ThisFileInfo['error'][] = 'Invalid chunk size ('.$ChunkSize.') for chunk "'.$ChunkName.'" at offset '.$ChunkBaseOffset; - break; - } - if ($ChunkSize > 0) { - $ChunkData .= fread($fd, $ChunkSize); - } - - switch ($ChunkName) { - case 'COMM': - // shortcut - $thisfile_vqf['COMM'] = array(); - $thisfile_vqf_COMM = &$thisfile_vqf['COMM']; - - $thisfile_vqf_COMM['channel_mode'] = getid3_lib::BigEndian2Int(substr($ChunkData, $chunkoffset, 4)); - $chunkoffset += 4; - $thisfile_vqf_COMM['bitrate'] = getid3_lib::BigEndian2Int(substr($ChunkData, $chunkoffset, 4)); - $chunkoffset += 4; - $thisfile_vqf_COMM['sample_rate'] = getid3_lib::BigEndian2Int(substr($ChunkData, $chunkoffset, 4)); - $chunkoffset += 4; - $thisfile_vqf_COMM['security_level'] = getid3_lib::BigEndian2Int(substr($ChunkData, $chunkoffset, 4)); - $chunkoffset += 4; - - $ThisFileInfo['audio']['channels'] = $thisfile_vqf_COMM['channel_mode'] + 1; - $ThisFileInfo['audio']['sample_rate'] = $this->VQFchannelFrequencyLookup($thisfile_vqf_COMM['sample_rate']); - $ThisFileInfo['audio']['bitrate'] = $thisfile_vqf_COMM['bitrate'] * 1000; - $ThisFileInfo['audio']['encoder_options'] = 'CBR' . ceil($ThisFileInfo['audio']['bitrate']/1000); - - if ($ThisFileInfo['audio']['bitrate'] == 0) { - $ThisFileInfo['error'][] = 'Corrupt VQF file: bitrate_audio == zero'; - return false; - } - break; - - case 'NAME': - case 'AUTH': - case '(c) ': - case 'FILE': - case 'COMT': - case 'ALBM': - $thisfile_vqf['comments'][$this->VQFcommentNiceNameLookup($ChunkName)][] = trim(substr($ChunkData, 8)); - break; - - case 'DSIZ': - $thisfile_vqf['DSIZ'] = getid3_lib::BigEndian2Int(substr($ChunkData, 8, 4)); - break; - - default: - $ThisFileInfo['warning'][] = 'Unhandled chunk type "'.$ChunkName.'" at offset '.$ChunkBaseOffset; - break; - } - } - - $ThisFileInfo['playtime_seconds'] = (($ThisFileInfo['avdataend'] - $ThisFileInfo['avdataoffset']) * 8) / $ThisFileInfo['audio']['bitrate']; - - if (isset($thisfile_vqf['DSIZ']) && (($thisfile_vqf['DSIZ'] != ($ThisFileInfo['avdataend'] - $ThisFileInfo['avdataoffset'] - strlen('DATA'))))) { - switch ($thisfile_vqf['DSIZ']) { - case 0: - case 1: - $ThisFileInfo['warning'][] = 'Invalid DSIZ value "'.$thisfile_vqf['DSIZ'].'". This is known to happen with VQF files encoded by Ahead Nero, and seems to be its way of saying this is TwinVQF v'.($thisfile_vqf['DSIZ'] + 1).'.0'; - $ThisFileInfo['audio']['encoder'] = 'Ahead Nero'; - break; - - default: - $ThisFileInfo['warning'][] = 'Probable corrupted file - should be '.$thisfile_vqf['DSIZ'].' bytes, actually '.($ThisFileInfo['avdataend'] - $ThisFileInfo['avdataoffset'] - strlen('DATA')); - break; - } - } - - return true; - } - - function VQFchannelFrequencyLookup($frequencyid) { - static $VQFchannelFrequencyLookup = array( - 11 => 11025, - 22 => 22050, - 44 => 44100 - ); - return (isset($VQFchannelFrequencyLookup[$frequencyid]) ? $VQFchannelFrequencyLookup[$frequencyid] : $frequencyid * 1000); - } - - function VQFcommentNiceNameLookup($shortname) { - static $VQFcommentNiceNameLookup = array( - 'NAME' => 'title', - 'AUTH' => 'artist', - '(c) ' => 'copyright', - 'FILE' => 'filename', - 'COMT' => 'comment', - 'ALBM' => 'album' - ); - return (isset($VQFcommentNiceNameLookup[$shortname]) ? $VQFcommentNiceNameLookup[$shortname] : $shortname); - } - -} - - -?>
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