/**
     * Waits until (state & stateMask) == wantState. Callers must ensure that stateMask is a
     * superset of wantState or the call will never be matched. Also, to work around some of the JMF
     * bugs, we time out if the event doesn't happen within STATE_SEMAPHORE_TIMEOUT milliseconds.
     * This is the minimum time it will wait. The actual delay may be longer.
     *
     * @param wantState - bit mask for bits you want set
     * @param stateMask - bit mask for bits you want to check
     * @return true if the state was matched, false if it timed out.
     */
    public boolean waitForState(int wantState, int stateMask) {
      /* Debug.trace("Waiting."+
                              " want="+stateString(wantState)+
                              " mask="+stateString(stateMask)+
                              " have="+stateString(state));
      */
      long t0 = System.currentTimeMillis();
      boolean done = false;
      boolean timeout = false;

      while (!done) {
        // synchronization here is important.  We must hold
        // the stateSemaphore lock while we do the comparison
        // to avoid a race condition.  It will be implicitly
        // released during the wait.
        synchronized (stateSemaphore) {
          // Debug.trace("Checking if "+stateString(state & stateMask)+
          //            " matches "+stateString(wantState));
          if ((state & stateMask) == wantState) {
            // check for successful completion
            done = true;
          } else {
            // no match, so we wait for a state change
            // Debug.trace("Waiting for state="+stateString(wantState));
            try {
              stateSemaphore.wait(STATE_SEMAPHORE_TIMEOUT);
              // bail if we sit here too long
            } catch (InterruptedException e) {
              // Debug.trace(e.toString());
            }
            // we may have awaked because of timeout or because
            // the state bits changed.  Check here for the case
            // where the timeout passed and the condition isn't met.
            long elapsed = System.currentTimeMillis() - t0;
            if ((elapsed > STATE_SEMAPHORE_TIMEOUT) && ((state & stateMask) != wantState)) {
              done = true;
              timeout = true;
            }
          }
        }
      }
      /* Debug.trace("Done waiting."+
                              " want="+stateString(wantState)+
                              " mask="+stateString(stateMask)+
                              " have="+stateString(state));
      */
      return !timeout;
    }
Beispiel #2
0
 /**
  * Implements {@link ActiveSpeakerChangedListener#activeSpeakerChanged(long)}. Notifies this
  * <tt>RecorderRtpImpl</tt> that the audio <tt>ReceiveStream</tt> considered active has changed,
  * and that the new active stream has SSRC <tt>ssrc</tt>.
  *
  * @param ssrc the SSRC of the new active stream.
  */
 @Override
 public void activeSpeakerChanged(long ssrc) {
   if (eventHandler != null) {
     RecorderEvent e = new RecorderEvent();
     e.setAudioSsrc(ssrc);
     // TODO: how do we time this?
     e.setInstant(System.currentTimeMillis());
     e.setType(RecorderEvent.Type.SPEAKER_CHANGED);
     e.setMediaType(MediaType.VIDEO);
     eventHandler.handleEvent(e);
   }
 }
Beispiel #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);
    }
  }