nextcloud/apps/media/lib_scanner.php

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<?php
/**
* ownCloud - media plugin
*
* @author Robin Appelman
* @copyright 2010 Robin Appelman icewind1991@gmail.com
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
* License as published by the Free Software Foundation; either
* version 3 of the License, or any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU AFFERO GENERAL PUBLIC LICENSE for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
*/
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require_once('getid3/getid3.php');
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//class for scanning directories for music
class OC_MEDIA_SCANNER{
static private $getID3=false;
//these are used to store which artists and albums we found, it can save a lot of addArtist/addAlbum calls
static private $artists=array();
static private $albums=array();//stored as "$artist/$album" to allow albums with the same name from different artists
/**
* scan a folder for music
* @param OC_EventSource eventSource (optional)
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* @return int the number of songs found
*/
public static function scanCollection($eventSource=null){
$music=OC_FileCache::searchByMime('audio');
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$ogg=OC_FileCache::searchByMime('application','ogg');
$music=array_merge($music,$ogg);
$eventSource->send('count',count($music));
$songs=0;
foreach($music as $file){
self::scanFile($file);
$songs++;
if($eventSource){
$eventSource->send('scanned',array('file'=>$file,'count'=>$songs));
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}
}
if($eventSource){
$eventSource->send('done',$songs);
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}
return $songs;
}
/**
* scan a file for music
* @param string $path
* @return boolean
*/
public static function scanFile($path){
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$file=OC_Filesystem::getLocalFile($path);
if(!self::isMusic($path)){
return;
}
if(!self::$getID3){
self::$getID3=@new getID3();
self::$getID3->encoding='UTF-8';
}
$data=@self::$getID3->analyze($file);
getid3_lib::CopyTagsToComments($data);
if(!isset($data['comments'])){
OC_Log::write('media',"error reading id3 tags in '$file'",OC_Log::WARN);
return;
}
if(!isset($data['comments']['artist'])){
OC_Log::write('media',"error reading artist tag in '$file'",OC_Log::WARN);
$artist='unknown';
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}else{
$artist=stripslashes($data['comments']['artist'][0]);
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}
if(!isset($data['comments']['album'])){
OC_Log::write('media',"error reading album tag in '$file'",OC_Log::WARN);
$album='unknown';
}else{
$album=stripslashes($data['comments']['album'][0]);
}
if(!isset($data['comments']['title'])){
OC_Log::write('media',"error reading title tag in '$file'",OC_Log::WARN);
$title='unknown';
}else{
$title=stripslashes($data['comments']['title'][0]);
}
$size=$data['filesize'];
if (isset($data['comments']['track']))
{
$track = $data['comments']['track'][0];
}
else if (isset($data['comments']['track_number']))
{
$track = $data['comments']['track_number'][0];
$track = explode('/',$track);
$track = $track[0];
}
else
{
$track = 0;
}
$length=isset($data['playtime_seconds'])?round($data['playtime_seconds']):0;
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if(!isset(self::$artists[$artist])){
$artistId=OC_MEDIA_COLLECTION::addArtist($artist);
self::$artists[$artist]=$artistId;
}else{
$artistId=self::$artists[$artist];
}
if(!isset(self::$albums[$artist.'/'.$album])){
$albumId=OC_MEDIA_COLLECTION::addAlbum($album,$artistId);
self::$albums[$artist.'/'.$album]=$albumId;
}else{
$albumId=self::$albums[$artist.'/'.$album];
}
$songId=OC_MEDIA_COLLECTION::addSong($title,$path,$artistId,$albumId,$length,$track,$size);
return (!($title=='unkown' && $artist=='unkown' && $album=='unkown'))?$songId:0;
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}
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/**
* quick check if a song is a music file by checking the extention, not as good as a proper mimetype check but way faster
* @param string $filename
* @return bool
*/
public static function isMusic($filename){
$ext=strtolower(substr($filename,strrpos($filename,'.')+1));
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return $ext=='mp3' || $ext=='flac' || $ext=='m4a' || $ext=='ogg' || $ext=='oga';
}
}