/*
* TagInfoFactory.
*
* JavaZOOM : jlgui@javazoom.net
* http://www.javazoom.net
*
*-----------------------------------------------------------------------
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Library General Public License as published
* by the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*----------------------------------------------------------------------
*/
package plugins.audioPlayer.javazoom.jlgui.player.amp.tag;
import java.io.File;
import java.io.IOException;
import java.lang.reflect.Constructor;
import java.net.MalformedURLException;
import java.net.URL;
import javax.sound.sampled.UnsupportedAudioFileException;
import plugins.audioPlayer.javazoom.jlgui.player.amp.tag.ui.APEDialog;
import plugins.audioPlayer.javazoom.jlgui.player.amp.tag.ui.EmptyDialog;
import plugins.audioPlayer.javazoom.jlgui.player.amp.tag.ui.FlacDialog;
import plugins.audioPlayer.javazoom.jlgui.player.amp.tag.ui.MpegDialog;
import plugins.audioPlayer.javazoom.jlgui.player.amp.tag.ui.OggVorbisDialog;
import plugins.audioPlayer.javazoom.jlgui.player.amp.tag.ui.TagInfoDialog;
import plugins.audioPlayer.javazoom.jlgui.player.amp.util.Config;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
/**
* This class is a factory for TagInfo and TagInfoDialog.
* It allows to any plug custom TagIngfo parser matching to TagInfo
* interface.
*/
public class TagInfoFactory
{
private static Log log = LogFactory.getLog(TagInfoFactory.class);
private static TagInfoFactory instance = null;
private Class MpegTagInfoClass = null;
private Class VorbisTagInfoClass = null;
private Class APETagInfoClass = null;
private Class FlacTagInfoClass = null;
private Config conf = null;
private TagInfoFactory()
{
super();
conf = Config.getInstance();
String classname = conf.getMpegTagInfoClassName();
MpegTagInfoClass = getTagInfoImpl(classname);
if (MpegTagInfoClass == null)
{
log.error("Error : TagInfo implementation not found in " + classname + " hierarchy");
MpegTagInfoClass = getTagInfoImpl("plugins.audioPlayer.javazoom.jlgui.player.amp.tag.MpegInfo");
}
classname = conf.getOggVorbisTagInfoClassName();
VorbisTagInfoClass = getTagInfoImpl(classname);
if (VorbisTagInfoClass == null)
{
log.error("Error : TagInfo implementation not found in " + classname + " hierarchy");
VorbisTagInfoClass = getTagInfoImpl("plugins.audioPlayer.javazoom.jlgui.player.amp.tag.OggVorbisInfo");
}
classname = conf.getAPETagInfoClassName();
APETagInfoClass = getTagInfoImpl(classname);
if (APETagInfoClass == null)
{
log.error("Error : TagInfo implementation not found in " + classname + " hierarchy");
APETagInfoClass = getTagInfoImpl("plugins.audioPlayer.javazoom.jlgui.player.amp.tag.APEInfo");
}
classname = conf.getFlacTagInfoClassName();
FlacTagInfoClass = getTagInfoImpl(classname);
if (FlacTagInfoClass == null)
{
log.error("Error : TagInfo implementation not found in " + classname + " hierarchy");
FlacTagInfoClass = getTagInfoImpl("plugins.audioPlayer.javazoom.jlgui.player.amp.tag.FlacInfo");
}
}
public static synchronized TagInfoFactory getInstance()
{
if (instance == null)
{
instance = new TagInfoFactory();
}
return instance;
}
/**
* Return tag info from a given URL.
*
* @param location
* @return TagInfo structure for given URL
*/
public TagInfo getTagInfo(URL location)
{
TagInfo taginfo;
try
{
taginfo = getTagInfoImplInstance(MpegTagInfoClass);
taginfo.load(location);
}
catch (IOException ex)
{
log.debug(ex);
taginfo = null;
}
catch (UnsupportedAudioFileException ex)
{
// Not Mpeg Format
taginfo = null;
}
if (taginfo == null)
{
// Check Ogg Vorbis format.
try
{
taginfo = getTagInfoImplInstance(VorbisTagInfoClass);
taginfo.load(location);
}
catch (UnsupportedAudioFileException ex)
{
// Not Ogg Vorbis Format
taginfo = null;
}
catch (IOException ex)
{
log.debug(ex);
taginfo = null;
}
}
if (taginfo == null)
{
// Check APE format.
try
{
taginfo = getTagInfoImplInstance(APETagInfoClass);
taginfo.load(location);
}
catch (UnsupportedAudioFileException ex)
{
// Not APE Format
taginfo = null;
}
catch (IOException ex)
{
log.debug(ex);
taginfo = null;
}
}
if (taginfo == null)
{
// Check Flac format.
try
{
taginfo = getTagInfoImplInstance(FlacTagInfoClass);
taginfo.load(location);
}
catch (UnsupportedAudioFileException ex)
{
// Not Flac Format
taginfo = null;
}
catch (IOException ex)
{
log.debug(ex);
taginfo = null;
}
}
return taginfo;
}
/**
* Return tag info from a given String.
*
* @param location
* @return TagInfo structure for given location
*/
public TagInfo getTagInfo(String location)
{
if (Config.startWithProtocol(location))
{
try
{
return getTagInfo(new URL(location));
}
catch (MalformedURLException e)
{
return null;
}
}
else
{
return getTagInfo(new File(location));
}
}
/**
* Get TagInfo for given file.
*
* @param location
* @return TagInfo structure for given location
*/
public TagInfo getTagInfo(File location)
{
TagInfo taginfo;
// Check Mpeg format.
try
{
taginfo = getTagInfoImplInstance(MpegTagInfoClass);
taginfo.load(location);
}
catch (IOException ex)
{
log.debug(ex);
taginfo = null;
}
catch (UnsupportedAudioFileException ex)
{
// Not Mpeg Format
taginfo = null;
}
if (taginfo == null)
{
// Check Ogg Vorbis format.
try
{
//taginfo = new OggVorbisInfo(location);
taginfo = getTagInfoImplInstance(VorbisTagInfoClass);
taginfo.load(location);
}
catch (UnsupportedAudioFileException ex)
{
// Not Ogg Vorbis Format
taginfo = null;
}
catch (IOException ex)
{
log.debug(ex);
taginfo = null;
}
}
if (taginfo == null)
{
// Check APE format.
try
{
taginfo = getTagInfoImplInstance(APETagInfoClass);
taginfo.load(location);
}
catch (UnsupportedAudioFileException ex)
{
// Not APE Format
taginfo = null;
}
catch (IOException ex)
{
log.debug(ex);
taginfo = null;
}
}
if (taginfo == null)
{
// Check Flac format.
try
{
taginfo = getTagInfoImplInstance(FlacTagInfoClass);
taginfo.load(location);
}
catch (UnsupportedAudioFileException ex)
{
// Not Flac Format
taginfo = null;
}
catch (IOException ex)
{
log.debug(ex);
taginfo = null;
}
}
return taginfo;
}
/**
* Return dialog (graphical) to display tag info.
*
* @param taginfo
* @return TagInfoDialog for given TagInfo
*/
public TagInfoDialog getTagInfoDialog(TagInfo taginfo)
{
TagInfoDialog dialog;
if (taginfo != null)
{
if (taginfo instanceof OggVorbisInfo)
{
dialog = new OggVorbisDialog(conf.getTopParent(), "OggVorbis info", (OggVorbisInfo) taginfo);
}
else if (taginfo instanceof MpegInfo)
{
dialog = new MpegDialog(conf.getTopParent(), "Mpeg info", (MpegInfo) taginfo);
}
else if (taginfo instanceof APEInfo)
{
dialog = new APEDialog(conf.getTopParent(), "Ape info", (APEInfo) taginfo);
}
else if (taginfo instanceof FlacInfo)
{
dialog = new FlacDialog(conf.getTopParent(), "Flac info", (FlacInfo) taginfo);
}
else
{
dialog = new EmptyDialog(conf.getTopParent(), "No info", taginfo);
}
}
else
{
dialog = new EmptyDialog(conf.getTopParent(), "No info", null);
}
return dialog;
}
/**
* Load and check class implementation from classname.
*
* @param classname
* @return TagInfo implementation for given class name
*/
public Class getTagInfoImpl(String classname)
{
Class aClass = null;
boolean interfaceFound = false;
if (classname != null)
{
try
{
aClass = Class.forName(classname);
Class superClass = aClass;
// Looking for TagInfo interface implementation.
while (superClass != null)
{
Class[] interfaces = superClass.getInterfaces();
for (int i = 0; i < interfaces.length; i++)
{
if ((interfaces[i].getName()).equals("plugins.audioPlayer.javazoom.jlgui.player.amp.tag.TagInfo"))
{
interfaceFound = true;
break;
}
}
if (interfaceFound) break;
superClass = superClass.getSuperclass();
}
if (interfaceFound) log.info(classname + " loaded");
else log.info(classname + " not loaded");
}
catch (ClassNotFoundException e)
{
log.error("Error : " + classname + " : " + e.getMessage());
}
}
return aClass;
}
/**
* Return new instance of given class.
*
* @param aClass
* @return TagInfo for given class
*/
public TagInfo getTagInfoImplInstance(Class aClass)
{
TagInfo instance = null;
if (aClass != null)
{
try
{
Class[] argsClass = new Class[] {};
Constructor c = aClass.getConstructor(argsClass);
instance = (TagInfo) (c.newInstance(null));
}
catch (Exception e)
{
log.error("Cannot Instanciate : " + aClass.getName() + " : " + e.getMessage());
}
}
return instance;
}
}