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package org.jivesoftware.smackx.jingle.media;
import java.io.IOException;
import java.io.InputStream;
import java.util.HashSet;
import java.util.Set;
import javax.media.Controller;
import javax.media.Manager;
import javax.media.NoProcessorException;
import javax.media.Processor;
import javax.media.control.TrackControl;
import javax.media.format.AudioFormat;
import javax.media.protocol.DataSource;
import javax.sound.sampled.AudioInputStream;
import org.jivesoftware.smackx.jingle.PayloadType;
import org.jivesoftware.smackx.jingle.media.JingleMediaManager.ContentType;
import org.jivesoftware.smackx.jingle.media.util.FormatTranslator;
import org.jivesoftware.smackx.jingle.media.util.StreamConverter;
public class EncodingJMFMediaEngine extends MediaEngine.Encoding {
protected static final AudioFormat[] supported = {
new AudioFormat(AudioFormat.LINEAR, 44100.0, 16, 2, AudioFormat.BIG_ENDIAN, AudioFormat.SIGNED, AudioFormat.NOT_SPECIFIED, AudioFormat.NOT_SPECIFIED, byte[].class),
new AudioFormat(AudioFormat.LINEAR, 44100.0, 16, 1, AudioFormat.BIG_ENDIAN, AudioFormat.SIGNED, AudioFormat.NOT_SPECIFIED, AudioFormat.NOT_SPECIFIED, byte[].class)
};
private Processor processor;
private InputStream input;
private AudioInputStream aisOutput;
public EncodingJMFMediaEngine() {
super(null);
}
public EncodingJMFMediaEngine(PayloadType outputFormat) {
super(outputFormat);
}
public Set getSupportedPayloadTypes(ContentType contentType) {
if(contentType == ContentType.AUDIO) {
Set result = new HashSet();
for(int i = 0; i < supported.length; i++) {
PayloadType pt = FormatTranslator.toPayloadType(supported[i]);
if(pt!=null) result.add(pt);
}
return result;
}
return null;
// //first check the cache
// Map cachedResultByDS = (Map) supportedPTs.get(StreamConverter.toDataSource(getInput()));
// if(cachedResultByDS != null) {
// Set cachedResultByContentType = (Set) cachedResultByDS.get(contentType);
// if(cachedResultByContentType != null) return cachedResultByContentType;
// }
//
//
// // currently only supports audio
// if(contentType.equals(ContentType.AUDIO)) {
// if(getInput() == null) throw new MediaEngine.InputNotSetError("Must set input before" +
// " asking which formats it supports.");
//
// DataSource inputDS = StreamConverter.toDataSource(input);
//
//
// //this is a little bit of a hack, but it beats hard coding it.
// Processor p;
// try {
// p = Manager.createProcessor(inputDS);
// p.configure();
//
// waitForState(Processor.Configured, p);
//
// TrackControl[] tracks = p.getTrackControls();
//
// ContentDescriptor cd = new ContentDescriptor(ContentDescriptor.CONTENT_UNKNOWN);
// p.setContentDescriptor(cd);
//
// Format[] formats = tracks[0].getSupportedFormats();
// Set result = new HashSet();
//
// for(int i = 0; i < formats.length; i++) {
// PayloadType pt = FormatTranslator.toPayloadType(formats[i]);
// if(pt!=null)System.out.println(formats[i] + " - " + pt.getName() + ", " + pt.getChannels() + ", " + pt.getId());
// if(pt!=null) result.add(pt);
// }
//
// //add the result to the cache
// if(cachedResultByDS != null) cachedResultByDS.put(contentType, result);
// else {
// Map newCTMap = new HashMap();
// newCTMap.put(contentType, result);
// supportedPTs.put(inputDS, newCTMap);
// }
//
// return result;
//
// } catch (Exception e) {
// //not sure if much more can be done here.
// e.printStackTrace();
// }
//
// }
// return null;
}
public void configure() throws UnableToConfigureMediaEngine {
DataSource inputDS = StreamConverter.toDataSource(input);
if(inputDS == null) throw new InputNotSetError("Input must be set before configuring.");
try {
processor = Manager.createProcessor(inputDS);
processor.configure();
waitForState(Processor.Configured, processor);
TrackControl[] tracks = processor.getTrackControls();
try {
tracks[0].setFormat(FormatTranslator.toJMFFormat(getPayloadType()));
} catch (Exception e) {
throw new UnableToConfigureMediaEngine(e);
}
processor.realize();
} catch (NoProcessorException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
public void start() {
processor.start();
}
public void stop() {
processor.stop();
}
public int getState() {
if(processor == null) return INSTANTIATED;
else if(processor.getState() == Processor.Configuring ||
processor.getState() == Processor.Configured ||
processor.getState() == Controller.Realizing) return CONFIGURING;
else if(processor.getState() == Controller.Realized) return CONFIGURED;
else if(processor.getState() == Controller.Started) return STARTED;
else return INSTANTIATED;
}
public void close() {
processor.close();
processor = null;
try {
getOutput().close();
} catch (IOException e) {}
}
/**
* Block until processor p enters the given state.
*/
private void waitForState(int state, Processor p){
while(p.getState() != state) {
try {
Thread.sleep(10);
} catch (InterruptedException e) {}
}
}
public InputStream getOutput() {
if(processor == null || (processor.getState() != Processor.Realized && processor.getState() != Processor.Started)) aisOutput = null;
else if(aisOutput == null) aisOutput = StreamConverter.toAudioInputStream(processor.getDataOutput());
return aisOutput;
}
public InputStream getInput() {
return input;
}
public void setInput(InputStream input) {
if(processor == null) this.input = input;
}
}
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