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package org.jivesoftware.smackx.jingle.media.util;
import java.io.IOException;
import javax.media.Buffer;
import javax.media.Format;
import javax.media.protocol.BufferTransferHandler;
import javax.media.protocol.ContentDescriptor;
import javax.media.protocol.PushBufferStream;
import javax.sound.sampled.AudioInputStream;
public class AISPushBufferStream implements PushBufferStream, Runnable {
private Format format;
private AudioInputStream data;
private ContentDescriptor cd = new ContentDescriptor(ContentDescriptor.RAW);
private BufferTransferHandler transferHandler;
private int seqNo;
private Thread thread;
private boolean threadStarted;
public AISPushBufferStream(AudioInputStream ais) {
data = ais;
format = FormatTranslator.toJMFFormat(ais.getFormat());
thread = new Thread(this);
seqNo = 0;
}
public Format getFormat() {
return format;
}
public synchronized void read(Buffer buff) throws IOException {
int dataAvailable = 0;
try {
dataAvailable = data.available();
} catch (IOException e) {
e.printStackTrace();
}
if(dataAvailable > 0) {
byte[] outdata = new byte[dataAvailable];
int dataRead = data.read(outdata);
buff.setFormat(getFormat());
buff.setData(outdata);
buff.setLength(dataRead);
buff.setSequenceNumber(seqNo);
buff.setHeader(null);
buff.setFlags(0);
}
}
public synchronized void setTransferHandler(BufferTransferHandler transferHandler) {
this.transferHandler = transferHandler;
notifyAll();
}
public ContentDescriptor getContentDescriptor() {
return cd;
}
public long getContentLength() {
return LENGTH_UNKNOWN;
}
public boolean endOfStream() {
return false;
}
public Object[] getControls() {
return null;
}
public Object getControl(String arg0) {
//no controls
return null;
}
public synchronized void start(boolean started) {
threadStarted = started;
if(started && !thread.isAlive()) {
thread = new Thread(this);
thread.start();
}
notifyAll();
}
public void run() {
while(threadStarted) {
synchronized(this) {
while(transferHandler == null && threadStarted) {
try {
wait(1000);
} catch(InterruptedException e) {}
}
}
int dataAvailable = 0;
try {
dataAvailable = data.available();
} catch (IOException e) {
e.printStackTrace();
}
//loop until there is some data to be read
if(threadStarted && transferHandler != null) {
if(dataAvailable > 0) {
transferHandler.transferData(this);
}
else try {
Thread.sleep(10);
} catch (InterruptedException e) {}
}
}
}
}
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