// TODO(damonkohler): Use an efficient search.
 private FrameTransform get(GraphName source, Time time) {
   CircularBlockingDeque<LazyFrameTransform> deque = transforms.get(source);
   if (deque == null) {
     return null;
   }
   LazyFrameTransform result = null;
   synchronized (mutex) {
     long offset = 0;
     for (LazyFrameTransform lazyFrameTransform : deque) {
       if (result == null) {
         result = lazyFrameTransform;
         offset = Math.abs(time.subtract(result.get().getTime()).totalNsecs());
         continue;
       }
       long newOffset = Math.abs(time.subtract(lazyFrameTransform.get().getTime()).totalNsecs());
       if (newOffset < offset) {
         result = lazyFrameTransform;
         offset = newOffset;
       }
     }
   }
   if (result == null) {
     return null;
   }
   return result.get();
 }
    //	@Override
    public void onSensorChanged(SensorEvent event) {
      if (event.sensor.getType() == Sensor.TYPE_PRESSURE) {
        FluidPressure msg = this.publisher.newMessage();
        long time_delta_millis = System.currentTimeMillis() - SystemClock.uptimeMillis();
        msg.getHeader().setStamp(Time.fromMillis(time_delta_millis + event.timestamp / 1000000));
        msg.getHeader().setFrameId("/android/barometric_pressure"); // TODO Make parameter

        msg.setFluidPressure(100.0 * event.values[0]); // Reported in hPa, need to output in Pa
        msg.setVariance(0.0);

        publisher.publish(msg);
      }
    }
예제 #3
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  @Override
  protected Bitmap processFrame(VideoCapture capture) {
    Time[] measureTime = new Time[9];
    String[] compDescStrings = {
      "Total processFrame",
      "Grab a new frame",
      "MatToBitmap",
      "Publish cameraInfo",
      "Create ImageMsg",
      "Compress image",
      "Transfer to Stream",
      "Image.SetData",
      "Publish Image",
      "Total econds per frame"
    };
    String[] rawDescStrings = {
      "Total processFrame",
      "Grab a new frame",
      "MatToBitmap",
      "Publish cameraInfo",
      "Create ImageMsg",
      "Pixel to buffer",
      "Transfer to Stream",
      "Image.SetData",
      "Publish Image",
      "Total seconds per frame"
    };

    measureTime[0] = connectedNode.getCurrentTime();

    switch (MainActivity.viewMode) {
      case MainActivity.VIEW_MODE_GRAY:
        //	            capture.retrieve(mGray, Highgui.CV_CAP_ANDROID_GREY_FRAME);
        capture.retrieve(mRgba, Highgui.CV_CAP_ANDROID_GREY_FRAME);
        //	            Imgproc.cvtColor(mGray, mRgba, Imgproc.COLOR_GRAY2RGBA, 4);
        break;
      case MainActivity.VIEW_MODE_RGBA:
        capture.retrieve(mRgba, Highgui.CV_CAP_ANDROID_COLOR_FRAME_RGBA);
        //            Core.putText(mRgba, "OpenCV + Android", new Point(10, 100), 3, 2, new
        // Scalar(255, 0, 0, 255), 3);
        break;
      case MainActivity.VIEW_MODE_CANNY:
        capture.retrieve(mGray, Highgui.CV_CAP_ANDROID_GREY_FRAME);
        Imgproc.Canny(mGray, mIntermediateMat, 80, 100);
        Imgproc.cvtColor(mIntermediateMat, mRgba, Imgproc.COLOR_GRAY2BGRA, 4);
        break;
    }
    Time currentTime = connectedNode.getCurrentTime();

    measureTime[1] = connectedNode.getCurrentTime();

    if (bmp == null) bmp = Bitmap.createBitmap(mRgba.cols(), mRgba.rows(), Bitmap.Config.ARGB_8888);

    if (MainActivity.imageCompression == MainActivity.IMAGE_TRANSPORT_COMPRESSION_NONE
        && bb == null) {
      Log.i(TAG, "Buffer 1");
      bb = ByteBuffer.allocate(bmp.getRowBytes() * bmp.getHeight());
      Log.i(TAG, "Buffer 2");
      bb.clear();
      Log.i(TAG, "Buffer 3");
    }
    try {
      Utils.matToBitmap(mRgba, bmp);
      measureTime[2] = connectedNode.getCurrentTime();

      cameraInfo = cameraInfoPublisher.newMessage();
      cameraInfo.getHeader().setFrameId("camera");
      cameraInfo.getHeader().setStamp(currentTime);
      cameraInfo.setWidth(640);
      cameraInfo.setHeight(480);
      cameraInfoPublisher.publish(cameraInfo);
      measureTime[3] = connectedNode.getCurrentTime();

      if (MainActivity.imageCompression >= MainActivity.IMAGE_TRANSPORT_COMPRESSION_PNG) {
        // Compressed image

        sensor_msgs.CompressedImage image = imagePublisher.newMessage();
        if (MainActivity.imageCompression == MainActivity.IMAGE_TRANSPORT_COMPRESSION_PNG)
          image.setFormat("png");
        else if (MainActivity.imageCompression == MainActivity.IMAGE_TRANSPORT_COMPRESSION_JPEG)
          image.setFormat("jpeg");
        image.getHeader().setStamp(currentTime);
        image.getHeader().setFrameId("camera");
        measureTime[4] = connectedNode.getCurrentTime();

        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        if (MainActivity.imageCompression == MainActivity.IMAGE_TRANSPORT_COMPRESSION_PNG)
          bmp.compress(Bitmap.CompressFormat.PNG, 100, baos);
        else if (MainActivity.imageCompression == MainActivity.IMAGE_TRANSPORT_COMPRESSION_JPEG)
          bmp.compress(Bitmap.CompressFormat.JPEG, MainActivity.imageCompressionQuality, baos);
        measureTime[5] = connectedNode.getCurrentTime();

        stream.buffer().writeBytes(baos.toByteArray());
        measureTime[6] = connectedNode.getCurrentTime();

        image.setData(stream.buffer().copy());
        measureTime[7] = connectedNode.getCurrentTime();

        stream.buffer().clear();
        imagePublisher.publish(image);
        measureTime[8] = connectedNode.getCurrentTime();
      } else {
        // Raw image

        Log.i(TAG, "Raw image 1");
        sensor_msgs.Image rawImage = rawImagePublisher.newMessage();
        rawImage.getHeader().setStamp(currentTime);
        rawImage.getHeader().setFrameId("camera");
        rawImage.setEncoding("rgba8");
        rawImage.setWidth(bmp.getWidth());
        rawImage.setHeight(bmp.getHeight());
        rawImage.setStep(640);
        measureTime[4] = connectedNode.getCurrentTime();

        Log.i(TAG, "Raw image 2");

        bmp.copyPixelsToBuffer(bb);
        measureTime[5] = connectedNode.getCurrentTime();

        Log.i(TAG, "Raw image 3");

        stream.buffer().writeBytes(bb.array());
        bb.clear();
        measureTime[6] = connectedNode.getCurrentTime();

        Log.i(TAG, "Raw image 4");

        rawImage.setData(stream.buffer().copy());
        stream.buffer().clear();
        measureTime[7] = connectedNode.getCurrentTime();

        Log.i(TAG, "Raw image 5");

        rawImagePublisher.publish(rawImage);
        measureTime[8] = connectedNode.getCurrentTime();
        Log.i(TAG, "Raw image 6");
      }

      newTime = connectedNode.getCurrentTime();
      stats[9][counter] = (newTime.subtract(oldTime)).nsecs / 1000000.0;
      oldTime = newTime;

      for (int i = 1; i < 9; i++) {
        stats[i][counter] = (measureTime[i].subtract(measureTime[i - 1])).nsecs / 1000000.0;
      }

      stats[0][counter] = measureTime[8].subtract(measureTime[0]).nsecs / 1000000.0;

      counter++;
      if (counter == numSamples) {
        double[] sts = new double[10];
        Arrays.fill(sts, 0.0);

        for (int i = 0; i < 10; i++) {
          for (int j = 0; j < numSamples; j++) sts[i] += stats[i][j];

          sts[i] /= (double) numSamples;

          if (MainActivity.imageCompression >= MainActivity.IMAGE_TRANSPORT_COMPRESSION_PNG)
            Log.i(TAG, String.format("Mean time for %s:\t\t%4.2fms", compDescStrings[i], sts[i]));
          else Log.i(TAG, String.format("Mean time for %s:\t\t%4.2fms", rawDescStrings[i], sts[i]));
        }
        Log.i(TAG, "\n\n");
        counter = 0;
      }

      return bmp;
    } catch (Exception e) {
      Log.e(TAG, "Frame conversion and publishing throws an exception: " + e.getMessage());
      bmp.recycle();
      return null;
    }
  }
예제 #4
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  /**
   * Returns the transform from the specified source frame to the target frame at a given time;
   * returns null if no transformation could be found.
   */
  public StampedTransform lookupTransform(String targetFrameID, String sourceFrameID, Time time) {
    // resolve the source and target IDs
    String resolvedTargetID = assertResolved(tfPrefix, targetFrameID);
    String resolvedSourceID = assertResolved(tfPrefix, sourceFrameID);

    // if source and target are the same, return the identity transform
    if (resolvedSourceID == resolvedTargetID) {
      StampedTransform out = StampedTransform.getIdentity();
      out.timeStamp = time;
      out.frameID = resolvedSourceID;
      out.childFrameID = resolvedTargetID;
      return out;
    }

    // lookup source and target frame
    Frame sourceFrame = frames.get(resolvedSourceID);
    Frame targetFrame = frames.get(resolvedTargetID);

    if (sourceFrame == null) {
      node.getLog()
          .error("Cannot transform: source frame \"" + resolvedSourceID + "\" does not exist.");
      return null;
    }

    if (targetFrame == null) {
      node.getLog()
          .error("Cannot transform: target frame \"" + resolvedTargetID + "\" does not exist.");
      return null;
    }

    // list that will contain transformations from source frame to some frame F
    LinkedList<TransformStorage> inverseTransforms = new LinkedList<TransformStorage>();
    // list that will contain transformations from frame F to target frame
    LinkedList<TransformStorage> forwardTransforms = new LinkedList<TransformStorage>();

    // fill the lists using lookupLists. If it returns FALSE, no transformation could be found.
    if (!lookupLists(
        targetFrame, sourceFrame, time.totalNsecs(), inverseTransforms, forwardTransforms)) {
      // TODO give warning
      node.getLog()
          .error(
              "Cannot transform: source + \""
                  + resolvedSourceID
                  + "\" and target \""
                  + resolvedTargetID
                  + "\" are not connected.");
      return null;
    }

    // create an identity transform with the correct time stamp
    StampedTransform out = StampedTransform.getIdentity();
    out.timeStamp = time;

    // multiply all transforms from source frame to frame F TODO: right?
    for (TransformStorage t : inverseTransforms) {
      out.mul(StorageToStampedTransform(t));
    }

    // multiply all transforms from frame F to target frame TODO: right?
    for (TransformStorage t : forwardTransforms) {
      out.mul(StorageToStampedTransform(t).invert(), out);
    }

    // return transform
    return out;
  }