<?php
/**
* This file is part of the PHP Video Toolkit v2 package.
*
* @author Oliver Lillie (aka buggedcom) <publicmail@buggedcom.co.uk>
* @license Dual licensed under MIT and GPLv2
* @copyright Copyright (c) 2008-2014 Oliver Lillie <http://www.buggedcom.co.uk>
* @package PHPVideoToolkit V2
* @version 2.1.7-beta
* @uses ffmpeg http://ffmpeg.sourceforge.net/
*/
namespace PHPVideoToolkit;
/**
* Provides a simple way for mapping file extensions to their available related -f formats.
*
* @author Oliver Lillie
*/
class Extensions
{
/**
* This is a list of recognised extensions to formats.
* Taken directly from the libavformat files inside ffmpeg.
* This list may not be complete and will need updating from time to time.
* Last updated 2013-03-01
*
* @access public
* @static
* @author Oliver Lillie
*/
static $extensions_to_formats = array (
'a64' => array('a64'),
'A64' => array('a64'),
'aac' => array('aac'),
'ac3' => array('ace','ac3'),
'eac3' => array('ace','eac3'),
'aac,adts' => array('adts'),
'adx' => array('adx'),
'aea' => array('aea'),
'aif' => array('aiff'),
'aiff' => array('aiff'),
'afc' => array('aiff'),
'aifc' => array('aiff'),
'amr' => array('amr'),
'ape' => array('ape'),
'apl' => array('ape'),
'mac' => array('ape'),
'aqt' => array('aqtitle'),
'asf' => array('asf', 'asf_stream'),
'wmv' => array('asf', 'asf_stream'),
'wma' => array('asf', 'asf_stream'),
'ass' => array('ass'),
'ssa' => array('ass'),
'ast' => array('ast'),
'au' => array('au'),
'avi' => array('avi'),
'avs' => array('avs', 'avisynth'),
'avr' => array('avr'),
'bin' => array('bin'),
'adf' => array('adf'),
'idf' => array('idf'),
'bit' => array('bit'),
'bmv' => array('bmv'),
'brstm' => array('brstm'),
'caf' => array('caf'),
'cdg' => array('cdg'),
'cdxl' => array('cdxl'),
'xl' => array('cdxl'),
'302' => array('daud'),
'daud' => array('daud'),
'dts' => array('dts'),
'dtshd' => array('dtshd'),
'dv' => array('dv'),
'dif' => array('dv'),
'cdata' => array('ea_cdata'),
'pgaf' => array('epaf'),
'fap' => array('epaf'),
'ffm' => array('ffm'),
'ffmeta' => array('ffmetadata'),
'flm' => array('filmstrip'),
'flac' => array('flac'),
'flv' => array('flv'),
'g722' => array('g722'),
'tco' => array('g723_1'),
'rco' => array('g723_1'),
'g729' => array('g729'),
'gif' => array('gif'),
'gsm' => array('gsm'),
'gxf' => array('gxf'),
'm3u8' => array('hls'),
'ico' => array('ico'),
'roq' => array('roq'),
'lbc' => array('ilbc'),
'bmp' => array('image2'),
'dpx' => array('image2'),
'jls' => array('image2'),
'jpeg' => array('image2'),
'jpg' => array('image2'),
'ljpg' => array('image2'),
'pam' => array('image2'),
'pbm' => array('image2'),
'pcx' => array('image2'),
'pgm' => array('image2'),
'pgmyuv' => array('image2'),
'png' => array('image2'),
'ppm' => array('image2'),
'sgi' => array('image2'),
'tga' => array('image2'),
'tif' => array('image2'),
'tiff' => array('image2'),
'jp2' => array('image2'),
'j2c' => array('image2'),
'xwd' => array('image2'),
'sun' => array('image2'),
'ras' => array('image2'),
'rs' => array('image2'),
'im1' => array('image2'),
'im8' => array('image2'),
'im24' => array('image2'),
'sunras' => array('image2'),
'xbm' => array('image2'),
'xface' => array('image2'),
'cgi' => array('ingenient'),
'sf' => array('ircam'),
'ircam' => array('ircam'),
'ivf' => array('ivf'),
'jss' => array('jacosub'),
'js' => array('jacosub'),
'latm' => array('latm'),
'669' => array('libmodplug'),
'abc' => array('libmodplug'),
'amf' => array('libmodplug'),
'ams' => array('libmodplug'),
'dbm' => array('libmodplug'),
'dmf' => array('libmodplug'),
'dsm' => array('libmodplug'),
'far' => array('libmodplug'),
'it' => array('libmodplug'),
'mdl' => array('libmodplug'),
'med' => array('libmodplug'),
'mid' => array('libmodplug'),
'mod' => array('libmodplug'),
'mt2' => array('libmodplug'),
'mtm' => array('libmodplug'),
'okt' => array('libmodplug'),
'psm' => array('libmodplug'),
'ptm' => array('libmodplug'),
's3m' => array('libmodplug'),
'stm' => array('libmodplug'),
'ult' => array('libmodplug'),
'umx' => array('libmodplug'),
'xm' => array('libmodplug'),
'itgz' => array('libmodplug'),
'itr' => array('libmodplug'),
'itz' => array('libmodplug'),
'mdgz' => array('libmodplug'),
'mdr' => array('libmodplug'),
'mdz' => array('libmodplug'),
's3gz' => array('libmodplug'),
's3r' => array('libmodplug'),
's3z' => array('libmodplug'),
'xmgz' => array('libmodplug'),
'xmr' => array('libmodplug'),
'xmz' => array('libmodplug'),
'nut' => array('libnut', 'nut'),
'lvf' => array('lvf'),
'mkv' => array('matroska'),
'mka' => array('matroska'),
'webm' => array('webm'),
'sub' => array('subviewer', 'microdvd', 'mpsub', 'subviewer1'),
'mmf' => array('mmf'),
'mov' => array('mov'),
'3gp' => array('3gp'),
'mp4' => array('mp4', 'psp'),
'psp' => array('psp'),
'3g2' => array('3g2'),
'm4v' => array('m4v', 'ipod'),
'm4a' => array('ipod'),
'ismv' => array('ismv'),
'isma' => array('ismv'),
'f4v' => array('f4v'),
'mp2' => array('mp2', 'mp3'),
'mp3' => array('mp3', 'mp2'),
'm2a' => array('mp2', 'mp3'),
'mpc' => array('mpc'),
'idx' => array('vobsub'),
'mpg' => array('mpeg', 'mpeg1video'),
'mpeg' => array('mpeg', 'mpeg1video'),
'vob' => array('vob', 'svcd'),
'dvd' => array('dvd'),
'ts' => array('mpegts'),
'm2t' => array('mpegts'),
'm2ts' => array('mpegts'),
'mts' => array('mpegts'),
'mjpg' => array('mjpeg', 'mpjpeg', 'smjpeg'),
'txt' => array('tty', 'mpl2', 'vplayer'),
'mpl2' => array('mpl2'),
'mvi' => array('mvi'),
'mxf' => array('mxf'),
'mxg' => array('mxg'),
'v' => array('nc'),
'nist' => array('nistsphere'),
'sph' => array('nistsphere'),
'oga' => array('oga'),
'ogg' => array('ogg'),
'ogv' => array('ogg'),
'spx' => array('ogg'),
'opus' => array('ogg'),
'oma' => array('oma'),
'sw' => array('s16be', 's16le'),
'sb' => array('s8'),
'uw' => array('u16be', 'u16le'),
'ub' => array('u8'),
'al' => array('alaw'),
'ul' => array('mulaw'),
'pjs' => array('pjs'),
'pvf' => array('pvf'),
'mlp' => array('mlp'),
'thd' => array('truehd'),
'shn' => array('shn'),
'vc1' => array('vc1'),
'cavs' => array('cavsvideo'),
'drc' => array('dirac'),
'dnxhd' => array('dnxhd'),
'h261' => array('h261'),
'h263' => array('h263'),
'h264' => array('h264'),
'mjpeg' => array('mjpeg'),
'm1v' => array('mpeg1video'),
'm2v' => array('mpeg2video'),
'yuv' => array('rawvideo'),
'cif' => array('rawvideo'),
'qcif' => array('rawvideo'),
'rgb' => array('rawvideo'),
'rt' => array('realtext'),
'rm' => array('rm'),
'ra' => array('rm'),
'rso' => array('rso'),
'smi' => array('sami'),
'sami' => array('sami'),
'sbg' => array('sbg'),
'vb' => array('siff'),
'son' => array('siff'),
'sox' => array('sox'),
'spdif' => array('spdif'),
'srt' => array('srt'),
'swf' => array('swf'),
'tak' => array('tak'),
'tta' => array('tta'),
'ans' => array('tty'),
'art' => array('tty'),
'asc' => array('tty'),
'diz' => array('tty'),
'ice' => array('tty'),
'nfo' => array('tty'),
'vt' => array('tty'),
'rcv' => array('rcv'),
'viv' => array('vivo'),
'voc' => array('voc'),
'vqf' => array('vqf'),
'vql' => array('vqf'),
'vqe' => array('vqf'),
'wav' => array('wav'),
'w64' => array('w64'),
'vtt' => array('webvtt'),
'wtv' => array('wtv'),
'wv' => array('wv'),
'yop' => array('yop'),
'y4m' => array('yuv4mpegpipe'),
);
/**
* Returns an array of formats associated with the related extension.
*
* @access public
* @author Oliver Lillie
* @param string $format
* @return mixed Returns false if no matching extensions are found, otherwise returns the list
* of extensions in an array.
*/
public static function toFormats($extension)
{
$extension = strtolower($extension);
return isset(self::$extensions_to_formats[$extension]) === true ? self::$extensions_to_formats[$extension] : false;
}
/**
* Attempts to get a "best guess" the format from all compatible formats.
* The way this works is that if an exact match of the extension is that format, then that is returned,
* if not then the first format in the matched formats is returned.
*
* @access public
* @author Oliver Lillie
* @param string $format
* @return mixed Returns false if no extension is found, otherwise the extension is returned as a string.
*/
public static function toBestGuessFormat($extension)
{
$extension = strtolower($extension);
$formats = self::toFormats($extension);
if($formats === false)
{
return false;
}
else if(in_array($extension, $formats) === true)
{
return $extension;
}
return $formats[0];
}
}
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