private void ImageProcessorMain()
{
while (!stopImageProcessing)
{
// Get an image to process.
UnprocessedImage current = null;
while (current == null)
{
lock (unprocessedImageLock)
{
if (unprocessedImages.Count > 0)
{
current = unprocessedImages.Dequeue();
}
}
if (current == null)
{
try { unprocessedImagesNoLongerEmptyEvent.WaitOne(); }
catch (ThreadInterruptedException) { }
}
if (stopImageProcessing)
{
return;
}
}
// Process it.
Bitmap bitmap = null;
switch (current.Format)
{
case "YUYV":
bitmap = YuyvUtilities.ConvertYUYVToColorBitmap(current.Width, current.Height, current.Data);
break;
case "MJPG":
bitmap = ConvertMJPGToColorBitmap(current);
break;
default:
Debug.WriteLine(String.Format("ERROR: unknown image type {0}.", current.Format));
break;
}
if (bitmap != null && ImageArrived != null)
{
ImageArrived(this, new ImageArrivedEventArgs()
{
Bitmap = bitmap, ImageNumber = current.ImageNumber, Timestamp = current.TimeStamp
});
}
}
}
void ProcessDataBlock(SocketAsyncEventArgs args)
{
numImagesBytesReceived += args.BytesTransferred;
if (numImagesBytesReceived < imageBuffer.Length)
{
// No, so wait till we get some more data.
args.SetBuffer(numImagesBytesReceived, imageBuffer.Length - numImagesBytesReceived);
ReceiveNextPacketAsync(args);
return;
}
numImagesSuccesfullyReceived++;
var image = new UnprocessedImage();
image.Width = imageHeader.Width;
image.Height = imageHeader.Height;
image.Format = "" + (char)imageHeader.Format1 + (char)imageHeader.Format2 + (char)imageHeader.Format3 + (char)imageHeader.Format4;
image.TimeStamp = imageHeader.TimeStamp;
image.Data = imageBuffer;
lock (unprocessedImageLock)
{
unprocessedImages.Enqueue(image);
if (unprocessedImages.Count == 1)
{
unprocessedImagesNoLongerEmptyEvent.Set();
}
while (unprocessedImages.Count > MaxQueueSize)
{
unprocessedImages.Dequeue();
}
}
imageBuffer = null;
PrepareToReceiveImageHeader(args);
}
private static Bitmap ConvertMJPGToColorBitmap(UnprocessedImage unprocessedImage)
{
byte[] jpegData = MJpegUtilities.ConvertMJpegBufferToJpeg(unprocessedImage.Data);
return((Bitmap)Image.FromStream(new MemoryStream(jpegData)));
}
void ProcessDataBlock(SocketAsyncEventArgs args)
{
numImagesBytesReceived += args.BytesTransferred;
if (numImagesBytesReceived < imageBuffer.Length)
{
// No, so wait till we get some more data.
args.SetBuffer(numImagesBytesReceived, imageBuffer.Length - numImagesBytesReceived);
ReceiveNextPacketAsync(args);
return;
}
numImagesSuccesfullyReceived++;
var image = new UnprocessedImage();
image.Width = imageHeader.Width;
image.Height = imageHeader.Height;
image.Format = "" + (char)imageHeader.Format1 + (char)imageHeader.Format2 + (char)imageHeader.Format3 +(char)imageHeader.Format4;
image.TimeStamp = imageHeader.TimeStamp;
image.Data = imageBuffer;
lock (unprocessedImageLock)
{
unprocessedImages.Enqueue(image);
if (unprocessedImages.Count == 1) unprocessedImagesNoLongerEmptyEvent.Set();
while (unprocessedImages.Count > MaxQueueSize) unprocessedImages.Dequeue();
}
imageBuffer = null;
PrepareToReceiveImageHeader(args);
}
private static Bitmap ConvertMJPGToColorBitmap(UnprocessedImage unprocessedImage)
{
byte[] jpegData = MJpegUtilities.ConvertMJpegBufferToJpeg(unprocessedImage.Data);
return (Bitmap)Image.FromStream(new MemoryStream(jpegData));
}