/** With the given processor info generated from matchTracks, build each of the processors. */
  public boolean buildTracks(ProcInfo pInfo[]) {
    ContentDescriptor cd = new ContentDescriptor(ContentDescriptor.RAW);
    Processor p;

    for (int i = 0; i < pInfo.length; i++) {
      p = pInfo[i].p;
      p.setContentDescriptor(cd);

      // We are done with programming the processor. Let's just
      // realize the it.
      if (!waitForState(p, Controller.Realized)) {
        System.err.println("- Failed to realize the processor.");
        return false;
      }

      // Set the JPEG quality to .5.
      setJPEGQuality(p, 0.5f);

      PushBufferStream pbs[];
      TrackInfo tInfo;
      int trackID;

      // Cheating. I should have checked the type of DataSource
      // returned.
      pInfo[i].ds = (PushBufferDataSource) p.getDataOutput();
      pbs = pInfo[i].ds.getStreams();

      // Find the matching data stream for the given track for audio.

      for (int type = AUDIO; type < MEDIA_TYPES; type++) {
        for (trackID = 0; trackID < pInfo[i].numTracksByType[type]; trackID++) {
          tInfo = pInfo[i].tracksByType[type][trackID];
          tInfo.pbs = pbs[tInfo.idx];
        }
      }
    }

    return true;
  }
Ejemplo n.º 2
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);
    }
  }
  /**
   * Given an array of input media locators and an output locator, this method will concatenate the
   * input media files to generate a single concatentated output.
   */
  public boolean doIt(MediaLocator inML[], MediaLocator outML) {
    // Guess the output content descriptor from the file extension.
    ContentDescriptor cd;

    if ((cd = fileExtToCD(outML.getRemainder())) == null) {
      System.err.println("Couldn't figure out from the file extension the type of output needed!");
      return false;
    }

    // Build the ProcInfo data structure for each processor.
    ProcInfo pInfo[] = new ProcInfo[inML.length];

    for (int i = 0; i < inML.length; i++) {
      pInfo[i] = new ProcInfo();
      pInfo[i].ml = inML[i];

      try {
        System.err.println("- Create processor for: " + inML[i]);
        pInfo[i].p = Manager.createProcessor(inML[i]);
      } catch (Exception e) {
        System.err.println("Yikes!  Cannot create a processor from the given url: " + e);
        return false;
      }
    }

    // Try to match the tracks from different processors.
    if (!matchTracks(pInfo, cd)) {
      System.err.println("Failed to match the tracks.");
      return false;
    }

    // Program each processors to perform the necessary transcoding
    // to concatenate the tracks.
    if (!buildTracks(pInfo)) {
      System.err.println("Failed to build processors for the inputs.");
      return false;
    }

    // Generate a super glue data source from the processors.
    SuperGlueDataSource ds = new SuperGlueDataSource(pInfo);

    // Create the processor to generate the final output.
    Processor p;
    try {
      p = Manager.createProcessor(ds);
    } catch (Exception e) {
      System.err.println("Failed to create a processor to concatenate the inputs.");
      return false;
    }

    p.addControllerListener(this);

    // Put the Processor into configured state.
    if (!waitForState(p, Processor.Configured)) {
      System.err.println("Failed to configure the processor.");
      return false;
    }

    // Set the output content descriptor on the final processor.
    System.err.println("- Set output content descriptor to: " + cd);
    if ((p.setContentDescriptor(cd)) == null) {
      System.err.println("Failed to set the output content descriptor on the processor.");
      return false;
    }

    // We are done with programming the processor. Let's just
    // realize it.
    if (!waitForState(p, Controller.Realized)) {
      System.err.println("Failed to realize the processor.");
      return false;
    }

    // Now, we'll need to create a DataSink.
    DataSink dsink;
    if ((dsink = createDataSink(p, outML)) == null) {
      System.err.println("Failed to create a DataSink for the given output MediaLocator: " + outML);
      return false;
    }

    dsink.addDataSinkListener(this);
    fileDone = false;

    System.err.println("- Start concatenation...");

    // OK, we can now start the actual concatenation.
    try {
      p.start();
      dsink.start();
    } catch (IOException e) {
      System.err.println("IO error during concatenation");
      return false;
    }

    // Wait for EndOfStream event.
    waitForFileDone();

    // Cleanup.
    try {
      dsink.close();
    } catch (Exception e) {
    }
    p.removeControllerListener(this);

    System.err.println("  ...done concatenation.");

    return true;
  }
Ejemplo n.º 4
0
  private String createProcessor() {
    if (locator == null) return "Locator is null";

    DataSource ds;
    DataSource clone;

    try {
      ds = Manager.createDataSource(locator);
    } catch (Exception e) {
      return "Couldn't create DataSource";
    }

    // Try to create a processor to handle the input media locator
    try {
      processor = Manager.createProcessor(ds);
    } catch (NoProcessorException npe) {
      return "Couldn't create processor";
    } catch (IOException ioe) {
      return "IOException creating processor";
    }

    // Wait for it to configure
    boolean result = waitForState(processor, Processor.Configured);
    if (result == false) return "Couldn't configure processor";

    // Get the tracks from the processor
    TrackControl[] tracks = processor.getTrackControls();

    // Do we have atleast one track?
    if (tracks == null || tracks.length < 1) return "Couldn't find tracks in processor";

    boolean programmed = false;

    // Search through the tracks for a video track
    for (int i = 0; i < tracks.length; i++) {
      Format format = tracks[i].getFormat();
      if (tracks[i].isEnabled() && format instanceof VideoFormat && !programmed) {

        // Found a video track. Try to program it to output JPEG/RTP
        // Make sure the sizes are multiple of 8's.
        Dimension size = ((VideoFormat) format).getSize();
        float frameRate = ((VideoFormat) format).getFrameRate();
        int w = (size.width % 8 == 0 ? size.width : (int) (size.width / 8) * 8);
        int h = (size.height % 8 == 0 ? size.height : (int) (size.height / 8) * 8);
        VideoFormat jpegFormat =
            new VideoFormat(
                VideoFormat.JPEG_RTP,
                new Dimension(w, h),
                Format.NOT_SPECIFIED,
                Format.byteArray,
                frameRate);
        tracks[i].setFormat(jpegFormat);
        System.err.println("Video transmitted as:");
        System.err.println("  " + jpegFormat);
        // Assume succesful
        programmed = true;
      } else tracks[i].setEnabled(false);
    }

    if (!programmed) return "Couldn't find video track";

    // Set the output content descriptor to RAW_RTP
    ContentDescriptor cd = new ContentDescriptor(ContentDescriptor.RAW_RTP);
    processor.setContentDescriptor(cd);

    // Realize the processor. This will internally create a flow
    // graph and attempt to create an output datasource for JPEG/RTP
    // video frames.
    result = waitForState(processor, Controller.Realized);
    if (result == false) return "Couldn't realize processor";

    // Set the JPEG quality to .5.
    setJPEGQuality(processor, 0.5f);

    // Get the output data source of the processor
    dataOutput = processor.getDataOutput();
    return null;
  }