private InputStream getInputStream(
String urlStr, Format outputFormat, ContentDescriptor outputContentDescriptor)
throws Exception {
final ProcessorModel processorModel =
new ProcessorModel(
new MediaLocator(urlStr),
outputFormat == null ? null : new Format[] {outputFormat},
outputContentDescriptor);
final Processor processor = Manager.createRealizedProcessor(processorModel);
final DataSource ds = processor.getDataOutput();
final DataSink[] streamDataSinkHolder = new DataSink[] {null};
// connect the data output of the processor to a StreamDataSink, which
// will make the data available to PipedInputStream, which we return.
final PipedInputStream in =
new PipedInputStream() {
// override close to clean up everything when the media has been
// served.
@Override
public void close() throws IOException {
super.close();
logger.fine("Closed input stream");
logger.fine("Stopping processor");
processor.stop();
logger.fine("Closing processor");
processor.close();
logger.fine("Deallocating processor");
processor.deallocate();
if (streamDataSinkHolder[0] != null) {
logger.fine("Closing StreamDataSink");
streamDataSinkHolder[0].close();
}
}
};
final PipedOutputStream out = new PipedOutputStream(in);
final DataSink streamDataSink = new StreamDataSink(out);
streamDataSinkHolder[0] = streamDataSink;
streamDataSink.setSource(ds);
streamDataSink.open();
streamDataSink.start();
logger.info("Starting processor");
processor.start();
// TODO: if there is an error, make sure we clean up.
// for example, if the client breaks the connection.
// we need a controller listener to listen for errors.
return in;
}
/**
* Finds the <tt>ReceiveStreamDesc</tt> with a particular <tt>DataSink</tt>
*
* @param dataSink The <tt>DataSink</tt> to match.
* @return the <tt>ReceiveStreamDesc</tt> with a particular <tt>DataSink</tt>, or <tt>null</tt>.
*/
private ReceiveStreamDesc findReceiveStream(DataSink dataSink) {
if (dataSink == null) return null;
synchronized (receiveStreams) {
for (ReceiveStreamDesc r : receiveStreams) if (dataSink.equals(r.dataSink)) return r;
}
return null;
}
/** Stops the transmission if already started */
public void stop() {
synchronized (this) {
if (processor != null) {
processor.stop();
processor.close();
processor = null;
rtptransmitter.close();
rtptransmitter = null;
}
}
}
// Creates an RTP transmit data sink. This is the easiest way to create
// an RTP transmitter. The other way is to use the RTPSessionManager API.
// Using an RTP session manager gives you more control if you wish to
// fine tune your transmission and set other parameters.
private String createTransmitter() {
// Create a media locator for the RTP data sink.
// For example:
// rtp://129.130.131.132:42050/video
String rtpURL = "rtp://" + ipAddress + ":" + port + "/video";
MediaLocator outputLocator = new MediaLocator(rtpURL);
// Create a data sink, open it and start transmission. It will wait
// for the processor to start sending data. So we need to start the
// output data source of the processor. We also need to start the
// processor itself, which is done after this method returns.
try {
rtptransmitter = Manager.createDataSink(dataOutput, outputLocator);
rtptransmitter.open();
rtptransmitter.start();
dataOutput.start();
} catch (MediaException me) {
return "Couldn't create RTP data sink";
} catch (IOException ioe) {
return "Couldn't create RTP data sink";
}
return null;
}
/**
* Implements {@link ControllerListener#controllerUpdate(ControllerEvent)}. Handles events from
* the <tt>Processor</tt>s that this instance uses to transcode media.
*
* @param ev the event to handle.
*/
public void controllerUpdate(ControllerEvent ev) {
if (ev == null || ev.getSourceController() == null) {
return;
}
Processor processor = (Processor) ev.getSourceController();
ReceiveStreamDesc desc = findReceiveStream(processor);
if (desc == null) {
logger.warn("Event from an orphaned processor, ignoring: " + ev);
return;
}
if (ev instanceof ConfigureCompleteEvent) {
if (logger.isInfoEnabled()) {
logger.info(
"Configured processor for ReceiveStream ssrc="
+ desc.ssrc
+ " ("
+ desc.format
+ ")"
+ " "
+ System.currentTimeMillis());
}
boolean audio = desc.format instanceof AudioFormat;
if (audio) {
ContentDescriptor cd = processor.setContentDescriptor(AUDIO_CONTENT_DESCRIPTOR);
if (!AUDIO_CONTENT_DESCRIPTOR.equals(cd)) {
logger.error(
"Failed to set the Processor content "
+ "descriptor to "
+ AUDIO_CONTENT_DESCRIPTOR
+ ". Actual result: "
+ cd);
removeReceiveStream(desc, false);
return;
}
}
for (TrackControl track : processor.getTrackControls()) {
Format trackFormat = track.getFormat();
if (audio) {
final long ssrc = desc.ssrc;
SilenceEffect silenceEffect;
if (Constants.OPUS_RTP.equals(desc.format.getEncoding())) {
silenceEffect = new SilenceEffect(48000);
} else {
// We haven't tested that the RTP timestamps survive
// the journey through the chain when codecs other than
// opus are in use, so for the moment we rely on FMJ's
// timestamps for non-opus formats.
silenceEffect = new SilenceEffect();
}
silenceEffect.setListener(
new SilenceEffect.Listener() {
boolean first = true;
@Override
public void onSilenceNotInserted(long timestamp) {
if (first) {
first = false;
// send event only
audioRecordingStarted(ssrc, timestamp);
} else {
// change file and send event
resetRecording(ssrc, timestamp);
}
}
});
desc.silenceEffect = silenceEffect;
AudioLevelEffect audioLevelEffect = new AudioLevelEffect();
audioLevelEffect.setAudioLevelListener(
new SimpleAudioLevelListener() {
@Override
public void audioLevelChanged(int level) {
activeSpeakerDetector.levelChanged(ssrc, level);
}
});
try {
// We add an effect, which will insert "silence" in
// place of lost packets.
track.setCodecChain(new Codec[] {silenceEffect, audioLevelEffect});
} catch (UnsupportedPlugInException upie) {
logger.warn("Failed to insert silence effect: " + upie);
// But do go on, a recording without extra silence is
// better than nothing ;)
}
} else {
// transcode vp8/rtp to vp8 (i.e. depacketize vp8)
if (trackFormat.matches(vp8RtpFormat)) track.setFormat(vp8Format);
else {
logger.error("Unsupported track format: " + trackFormat + " for ssrc=" + desc.ssrc);
// we currently only support vp8
removeReceiveStream(desc, false);
return;
}
}
}
processor.realize();
} else if (ev instanceof RealizeCompleteEvent) {
desc.dataSource = processor.getDataOutput();
long ssrc = desc.ssrc;
boolean audio = desc.format instanceof AudioFormat;
String suffix = audio ? AUDIO_FILENAME_SUFFIX : VIDEO_FILENAME_SUFFIX;
// XXX '\' on windows?
String filename = getNextFilename(path + "/" + ssrc, suffix);
desc.filename = filename;
DataSink dataSink;
if (audio) {
try {
dataSink = Manager.createDataSink(desc.dataSource, new MediaLocator("file:" + filename));
} catch (NoDataSinkException ndse) {
logger.error("Could not create DataSink: " + ndse);
removeReceiveStream(desc, false);
return;
}
} else {
dataSink = new WebmDataSink(filename, desc.dataSource);
}
if (logger.isInfoEnabled())
logger.info(
"Created DataSink ("
+ dataSink
+ ") for SSRC="
+ ssrc
+ ". Output filename: "
+ filename);
try {
dataSink.open();
} catch (IOException e) {
logger.error("Failed to open DataSink (" + dataSink + ") for" + " SSRC=" + ssrc + ": " + e);
removeReceiveStream(desc, false);
return;
}
if (!audio) {
final WebmDataSink webmDataSink = (WebmDataSink) dataSink;
webmDataSink.setSsrc(ssrc);
webmDataSink.setEventHandler(eventHandler);
webmDataSink.setKeyFrameControl(
new KeyFrameControlAdapter() {
@Override
public boolean requestKeyFrame(boolean urgent) {
return requestFIR(webmDataSink);
}
});
}
try {
dataSink.start();
} catch (IOException e) {
logger.error(
"Failed to start DataSink (" + dataSink + ") for" + " SSRC=" + ssrc + ". " + e);
removeReceiveStream(desc, false);
return;
}
if (logger.isInfoEnabled()) logger.info("Started DataSink for SSRC=" + ssrc);
desc.dataSink = dataSink;
processor.start();
} else if (logger.isDebugEnabled()) {
logger.debug(
"Unhandled ControllerEvent from the Processor for ssrc=" + desc.ssrc + ": " + ev);
}
}
public static void main(String[] args) {
// ---------------- CUT HERE START ----------------- //
Format formats[] = new Format[2];
formats[0] = new AudioFormat(AudioFormat.IMA4);
formats[1] = new VideoFormat(VideoFormat.CINEPAK);
FileTypeDescriptor outputType = new FileTypeDescriptor(FileTypeDescriptor.QUICKTIME);
Processor p = null;
try {
p = Manager.createRealizedProcessor(new ProcessorModel(formats, outputType));
} catch (IOException e) {
System.exit(-1);
} catch (NoProcessorException e) {
System.exit(-1);
} catch (CannotRealizeException e) {
System.exit(-1);
}
// get the output of the processor
DataSource source = p.getDataOutput();
// create a File protocol MediaLocator with the location of the file to
// which bits are to be written
MediaLocator dest = new MediaLocator("file://foo.mov");
// create a datasink to do the file writing & open the sink to make sure
// we can write to it.
DataSink filewriter = null;
try {
filewriter = Manager.createDataSink(source, dest);
filewriter.open();
} catch (NoDataSinkException e) {
System.exit(-1);
} catch (IOException e) {
System.exit(-1);
} catch (SecurityException e) {
System.exit(-1);
}
// now start the filewriter and processor
try {
filewriter.start();
} catch (IOException e) {
System.exit(-1);
}
p.start();
// stop and close the processor when done capturing...
// close the datasink when EndOfStream event is received...
// ----------------- CUT HERE END ---------------- //
try {
Thread.currentThread().sleep(4000);
} catch (InterruptedException ie) {
}
p.stop();
p.close();
try {
Thread.currentThread().sleep(1000);
} catch (InterruptedException ie) {
}
filewriter.close();
try {
Thread.currentThread().sleep(4000);
} catch (InterruptedException ie) {
}
System.exit(0);
}