/**
* Restarts the recording for a specific SSRC.
*
* @param ssrc the SSRC for which to restart recording. RTP packet of the new recording).
*/
private void resetRecording(long ssrc, long timestamp) {
ReceiveStreamDesc receiveStream = findReceiveStream(ssrc);
// we only restart audio recordings
if (receiveStream != null && receiveStream.format instanceof AudioFormat) {
String newFilename = getNextFilename(path + "/" + ssrc, AUDIO_FILENAME_SUFFIX);
// flush the buffer contained in the MP3 encoder
String s = "trying to flush ssrc=" + ssrc;
Processor p = receiveStream.processor;
if (p != null) {
s += " p!=null";
for (TrackControl tc : p.getTrackControls()) {
Object o = tc.getControl(FlushableControl.class.getName());
if (o != null) ((FlushableControl) o).flush();
}
}
if (logger.isInfoEnabled()) {
logger.info("Restarting recording for SSRC=" + ssrc + ". New filename: " + newFilename);
}
receiveStream.dataSink.close();
receiveStream.dataSink = null;
// flush the FMJ jitter buffer
// DataSource ds = receiveStream.receiveStream.getDataSource();
// if (ds instanceof net.sf.fmj.media.protocol.rtp.DataSource)
// ((net.sf.fmj.media.protocol.rtp.DataSource)ds).flush();
receiveStream.filename = newFilename;
try {
receiveStream.dataSink =
Manager.createDataSink(
receiveStream.dataSource, new MediaLocator("file:" + newFilename));
} catch (NoDataSinkException ndse) {
logger.warn("Could not reset recording for SSRC=" + ssrc + ": " + ndse);
removeReceiveStream(receiveStream, false);
}
try {
receiveStream.dataSink.open();
receiveStream.dataSink.start();
} catch (IOException ioe) {
logger.warn("Could not reset recording for SSRC=" + ssrc + ": " + ioe);
removeReceiveStream(receiveStream, false);
}
audioRecordingStarted(ssrc, timestamp);
}
}
/**
* Finds the <tt>ReceiveStreamDesc</tt> with a particular <tt>Processor</tt>
*
* @param processor The <tt>Processor</tt> to match.
* @return the <tt>ReceiveStreamDesc</tt> with a particular <tt>Processor</tt>, or <tt>null</tt>.
*/
private ReceiveStreamDesc findReceiveStream(Processor processor) {
if (processor == null) return null;
synchronized (receiveStreams) {
for (ReceiveStreamDesc r : receiveStreams) if (processor.equals(r.processor)) return r;
}
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);
}
}
/**
* Implements {@link ReceiveStreamListener#update(ReceiveStreamEvent)}.
*
* <p>{@link #rtpManager} will use this to notify us of <tt>ReceiveStreamEvent</tt>s.
*/
@Override
public void update(ReceiveStreamEvent event) {
if (event == null) return;
ReceiveStream receiveStream = event.getReceiveStream();
if (event instanceof NewReceiveStreamEvent) {
if (receiveStream == null) {
logger.warn("NewReceiveStreamEvent: null");
return;
}
final long ssrc = getReceiveStreamSSRC(receiveStream);
ReceiveStreamDesc receiveStreamDesc = findReceiveStream(ssrc);
if (receiveStreamDesc != null) {
String s = "NewReceiveStreamEvent for an existing SSRC. ";
if (receiveStream != receiveStreamDesc.receiveStream)
s += "(but different ReceiveStream object)";
logger.warn(s);
return;
} else receiveStreamDesc = new ReceiveStreamDesc(receiveStream);
if (logger.isInfoEnabled()) logger.info("New ReceiveStream, ssrc=" + ssrc);
// Find the format of the ReceiveStream
DataSource dataSource = receiveStream.getDataSource();
if (dataSource instanceof PushBufferDataSource) {
Format format = null;
PushBufferDataSource pbds = (PushBufferDataSource) dataSource;
for (PushBufferStream pbs : pbds.getStreams()) {
if ((format = pbs.getFormat()) != null) break;
}
if (format == null) {
logger.error("Failed to handle new ReceiveStream: " + "Failed to determine format");
return;
}
receiveStreamDesc.format = format;
} else {
logger.error("Failed to handle new ReceiveStream: " + "Unsupported DataSource");
return;
}
int rtpClockRate = -1;
if (receiveStreamDesc.format instanceof AudioFormat)
rtpClockRate = (int) ((AudioFormat) receiveStreamDesc.format).getSampleRate();
else if (receiveStreamDesc.format instanceof VideoFormat) rtpClockRate = 90000;
getSynchronizer().setRtpClockRate(ssrc, rtpClockRate);
// create a Processor and configure it
Processor processor = null;
try {
processor = Manager.createProcessor(receiveStream.getDataSource());
} catch (NoProcessorException npe) {
logger.error("Failed to create Processor: ", npe);
return;
} catch (IOException ioe) {
logger.error("Failed to create Processor: ", ioe);
return;
}
if (logger.isInfoEnabled()) logger.info("Created processor for SSRC=" + ssrc);
processor.addControllerListener(this);
receiveStreamDesc.processor = processor;
final int streamCount;
synchronized (receiveStreams) {
receiveStreams.add(receiveStreamDesc);
streamCount = receiveStreams.size();
}
/*
* XXX TODO IRBABOON
* This is a terrible hack which works around a failure to realize()
* some of the Processor-s for audio streams, when multiple streams
* start nearly simultaneously. The cause of the problem is currently
* unknown (and synchronizing all FMJ calls in RecorderRtpImpl
* does not help).
* XXX TODO NOOBABRI
*/
if (receiveStreamDesc.format instanceof AudioFormat) {
final Processor p = processor;
new Thread() {
@Override
public void run() {
// delay configuring the processors for the different
// audio streams to decrease the probability that they
// run together.
try {
int ms = 450 * (streamCount - 1);
logger.warn(
"Sleeping for "
+ ms
+ "ms before"
+ " configuring processor for SSRC="
+ ssrc
+ " "
+ System.currentTimeMillis());
Thread.sleep(ms);
} catch (Exception e) {
}
p.configure();
}
}.run();
} else {
processor.configure();
}
} else if (event instanceof TimeoutEvent) {
if (receiveStream == null) {
// TODO: we might want to get the list of ReceiveStream-s from
// rtpManager and compare it to our list, to see if we should
// remove a stream.
logger.warn("TimeoutEvent: null.");
return;
}
// FMJ silently creates new ReceiveStream instances, so we have to
// recognize them by the SSRC.
ReceiveStreamDesc receiveStreamDesc = findReceiveStream(getReceiveStreamSSRC(receiveStream));
if (receiveStreamDesc != null) {
if (logger.isInfoEnabled()) {
logger.info("ReceiveStream timeout, ssrc=" + receiveStreamDesc.ssrc);
}
removeReceiveStream(receiveStreamDesc, true);
}
} else if (event != null && logger.isInfoEnabled()) {
logger.info("Unhandled ReceiveStreamEvent (" + event.getClass().getName() + "): " + event);
}
}