/*
* This file is part of libbluray
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) 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
* Lesser 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/>.
*/
package javax.media;
import java.io.IOException;
import java.net.URL;
import java.util.Vector;
import javax.media.protocol.DataSource;
import javax.media.protocol.URLDataSource;
import org.videolan.Logger;
/**
* This file is a stripped down version of the Manager class from FMJ (fmj-sf.net)
* @author Ken Larson
*
*/
public final class Manager {
public static Player createPlayer(URL sourceURL) throws IOException,
NoPlayerException {
return createPlayer(new MediaLocator(sourceURL));
}
public static Player createPlayer(MediaLocator sourceLocator)
throws IOException, NoPlayerException {
final String protocol = sourceLocator.getProtocol();
final Vector dataSourceList = getDataSourceList(protocol);
for (int i = 0; i < dataSourceList.size(); ++i) {
String dataSourceClassName = (String) dataSourceList.get(i);
try {
final Class dataSourceClass = Class.forName(dataSourceClassName);
final DataSource dataSource = (DataSource) dataSourceClass.newInstance();
dataSource.setLocator(sourceLocator);
dataSource.connect();
return createPlayer(dataSource);
// TODO: JMF seems to disconnect data sources in this method, based on this stack trace:
// java.lang.NullPointerException
// at com.sun.media.protocol.rtp.DataSource.disconnect(DataSource.java:207)
// at javax.media.Manager.createPlayer(Manager.java:425)
// at net.sf.fmj.ui.application.ContainerPlayer.createNewPlayer(ContainerPlayer.java:357)
} catch (NoPlayerException e) {
// no need to log, will be logged by call to createPlayer.
continue;
} catch (ClassNotFoundException e) {
logger.warning("createPlayer: " + e); // no need for call stack
continue;
} catch (IOException e) {
logger.warning("" + e);
continue;
} catch (NoClassDefFoundError e) {
logger.warning("" + e);
continue;
} catch (Exception e) {
logger.warning("" + e);
continue;
}
}
// if none found, try URLDataSource:
final URL url;
try {
url = sourceLocator.getURL();
} catch (Exception e) {
logger.warning("" + e);
throw new NoPlayerException();
}
final URLDataSource dataSource = new URLDataSource(url);
dataSource.connect(); // TODO: there is a problem because we connect to the datasource here, but
// the following call may try twice or more to use the datasource with a player, once
// for the right content type, and multiple times for unknown. The first attempt (for example) may actually
// read data, in which case the second one will be missing data when it reads.
// really, the datasource needs to be recreated.
// The workaround for now is that URLDataSource (and others) allows repeated connect() calls.
return createPlayer(dataSource);
}
public static Player createPlayer(DataSource source) throws IOException, NoPlayerException {
return createPlayer(source, source.getContentType());
}
public static DataSource createDataSource(URL sourceURL)
throws IOException, NoDataSourceException {
return createDataSource(new MediaLocator(sourceURL));
}
public static DataSource createDataSource(MediaLocator sourceLocator)
throws IOException, NoDataSourceException {
final String protocol = sourceLocator.getProtocol();
final Vector dataSourceList = getDataSourceList(protocol);
for (int i = 0; i < dataSourceList.size(); ++i) {
String dataSourceClassName = (String) dataSourceList.get(i);
try {
final Class dataSourceClass = Class.forName(dataSourceClassName);
final DataSource dataSource = (DataSource) dataSourceClass.newInstance();
dataSource.setLocator(sourceLocator);
dataSource.connect();
return dataSource;
} catch (ClassNotFoundException e) {
logger.warning("createDataSource: " + e); // no need for call stack
continue;
} catch (IOException e) {
logger.warning("" + e);
continue;
} catch (NoClassDefFoundError e) {
logger.warning("" + e);
continue;
} catch (Exception e) {
logger.warning("" + e);
continue;
}
}
// if none found, try URLDataSource:
final URL url;
try {
url = sourceLocator.getURL();
} catch (Exception e) {
logger.warning("" + e);
throw new NoDataSourceException();
}
final URLDataSource dataSource = new URLDataSource(url);
dataSource.connect();
return dataSource;
}
public static TimeBase getSystemTimeBase() {
return systemTimeBase;
}
public static Vector getDataSourceList(String protocolName) {
return getClassList(protocolName, PackageManager.getProtocolPrefixList(), "protocol", "DataSource");
}
public static Vector getHandlerClassList(String contentName) {
return getClassList(toPackageFriendly(contentName), PackageManager.getContentPrefixList(), "content", "Handler");
}
private static Player createPlayer(DataSource source, String contentType)
throws IOException, NoPlayerException {
final Vector handlerClassList = getHandlerClassList(contentType);
for (int i = 0; i < handlerClassList.size(); ++i) {
final String handlerClassName = (String) handlerClassList.get(i);
try {
System.out.println(handlerClassName);
final Class handlerClass = Class.forName(handlerClassName);
if (!Player.class.isAssignableFrom(handlerClass) &&
!MediaProxy.class.isAssignableFrom(handlerClass)) {
continue; // skip any classes that will not be matched below.
}
final MediaHandler handler = (MediaHandler) handlerClass.newInstance();
handler.setSource(source);
if (handler instanceof Player) {
return (Player) handler;
} else if (handler instanceof MediaProxy) {
final MediaProxy mediaProxy = (MediaProxy) handler;
return createPlayer(mediaProxy.getDataSource());
}
} catch (ClassNotFoundException e) {
// no need for call stack
logger.warning("createPlayer: " + e);
continue;
} catch (IncompatibleSourceException e) {
// no need for call stack
logger.warning("createPlayer(" + source + ", " + contentType + "): " + e);
continue;
} catch (IOException e) {
logger.warning("" + e);
continue;
} catch (NoPlayerException e) {
// no need to log, will be logged by call to createPlayer.
continue;
} catch (NoClassDefFoundError e) {
logger.warning("" + e);
continue;
} catch (Exception e) {
logger.warning("" + e);
continue;
}
}
logger.error("No player found for " + contentType + " / " + source.getLocator());
throw new NoPlayerException("No player found for " + source.getLocator());
}
private static char toPackageFriendly(char c) {
if (c >= 'a' && c <= 'z')
return c;
else if (c >= 'A' && c <= 'Z')
return c;
else if (c >= '0' && c <= '9')
return c;
else if (c == '.')
return c;
else if (c == '/')
return '.';
else
return '_';
}
private static String toPackageFriendly(String contentName) {
final StringBuffer b = new StringBuffer();
for (int i = 0; i < contentName.length(); ++i) {
final char c = contentName.charAt(i);
b.append(toPackageFriendly(c));
}
return b.toString();
}
public static Vector getClassList(String contentName, Vector packages, String component2, String className) {
final Vector result = new Vector();
//result.add("media." + component2 + "." + contentName + "." + className);
for (int i = 0; i < packages.size(); ++i) {
result.add(((String) packages.get(i)) + ".media." + component2 + "." + contentName + "." + className);
}
return result;
}
public static final String UNKNOWN_CONTENT_NAME = "unknown";
private static final TimeBase systemTimeBase = new SystemTimeBase();
private static final Logger logger = Logger.getLogger(Manager.class.getName());
}