Exemplo n.º 1
0
  /**
   * 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);
    }
  }
Exemplo n.º 2
0
  /**
   * 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;
  }
Exemplo n.º 3
0
  /**
   * 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);
    }
  }
Exemplo n.º 4
0
  /**
   * 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);
    }
  }