@Override
public AsyncIOWriter write(byte[] data, int offset, int length) throws IOException {
if (channel.isOpen()) {
pendingWrite.incrementAndGet();
final ChannelBuffer buffer = ChannelBuffers.dynamicBuffer();
ChannelBufferOutputStream c = new ChannelBufferOutputStream(buffer);
if (headerWritten) {
c.write(Integer.toHexString(length - offset).getBytes("UTF-8"));
c.write(CHUNK_DELIMITER);
}
c.write(data, offset, length);
if (headerWritten) {
c.write(CHUNK_DELIMITER);
}
channel.write(c.buffer()).addListener(listener);
byteWritten = true;
lastWrite = System.currentTimeMillis();
} else {
logger.warn("Trying to write on a closed channel {}", channel);
}
headerWritten = true;
return this;
}
/**
* encode the current Control Message into a channel buffer
*
* @throws Exception
*/
ChannelBuffer buffer() throws Exception {
ChannelBufferOutputStream bout =
new ChannelBufferOutputStream(ChannelBuffers.directBuffer(encodeLength()));
write(bout);
bout.close();
return bout.buffer();
}
/** create a buffer containing the encoding of this batch */
ChannelBuffer buffer() throws Exception {
ChannelBufferOutputStream bout =
new ChannelBufferOutputStream(ChannelBuffers.directBuffer(encoded_length));
for (TaskMessage msg : msgs) {
writeTaskMessage(bout, msg);
}
// add a END_OF_BATCH indicator
ControlMessage.EOB_MESSAGE.write(bout);
bout.close();
return bout.buffer();
}
@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;
}
}