void cam_PreviewFrameAvailable(ICameraCaptureDevice device, object sender)
{
if (isProcessing)
{
return;
}
cameraDevice.PreviewFrameAvailable -= previewFrameHandler;
isProcessing = true;
int len = (int)device.PreviewResolution.Width * (int)device.PreviewResolution.Height;
if (pixels == null)
{
pixels = new byte[len];
}
device.GetPreviewBufferY(pixels);
// Byte[] result = new Byte[10000];
int width = (int)device.PreviewResolution.Width;
int height = (int)device.PreviewResolution.Height;
ThreadArguments ta = new ThreadArguments();
ta.height = height;
ta.width = width;
ta.pixels = pixels;
Deployment.Current.Dispatcher.BeginInvoke(delegate()
{
bw.RunWorkerAsync(ta);
});
}
private void PhotoCaptureDevice_PreviewFrameAvailable(ICameraCaptureDevice sender, object args)
{
if (_active && !_processing && _device != null)
{
_processing = true;
_device.PreviewFrameAvailable -= PhotoCaptureDevice_PreviewFrameAvailable;
var width = (uint)_device.PreviewResolution.Width;
var height = (uint)_device.PreviewResolution.Height;
byte[] buffer = new byte[width * height];
sender.GetPreviewBufferY(buffer);
var frame = new Frame()
{
Buffer = buffer,
Pitch = width,
Format = FrameFormat.Gray8,
Dimensions = new Windows.Foundation.Size(width, height)
};
Dispatcher.BeginInvoke(async() =>
{
if (_active)
{
var tuple = await ProcessFrameAsync(frame);
_processing = false;
if (_active && _device != null)
{
if (tuple != null && ResultTextBlock.Text != tuple.Item1.Text)
{
_resultTuple = tuple;
ResultTextBlock.Text = _resultTuple.Item1.Text;
ResultImage.Source = _resultTuple.Item2;
if (OpticalReaderTask.Instance.RequireConfirmation)
{
ResultGrid.Visibility = System.Windows.Visibility.Visible;
}
else
{
NavigationService.GoBack();
}
}
_device.PreviewFrameAvailable += PhotoCaptureDevice_PreviewFrameAvailable;
}
}
else
{
_processing = false;
}
});
}
}
void cam_PreviewFrameAvailable(ICameraCaptureDevice device, object sender)
{
if (activeThreads >= param_maxThreads || resultDisplayed)
{
return;
}
if (isClosing)
{
return;
}
activeThreads++;
System.Diagnostics.Debug.WriteLine("ActiveThreads: " + activeThreads.ToString());
isProcessing = true;
int len = (int)device.PreviewResolution.Width * (int)device.PreviewResolution.Height;
if (pixels == null)
{
pixels = new byte[len];
}
device.GetPreviewBufferY(pixels);
// Byte[] result = new Byte[10000];
int width = (int)device.PreviewResolution.Width;
int height = (int)device.PreviewResolution.Height;
ThreadArguments ta = new ThreadArguments();
ta.height = height;
ta.width = width;
ta.pixels = pixels;
BackgroundWorker bw1 = new BackgroundWorker();
bw1.WorkerReportsProgress = false;
bw1.WorkerSupportsCancellation = false;
bw1.DoWork += new DoWorkEventHandler(bw_DoWork);
bw1.RunWorkerAsync(ta);
}
void cam_PreviewFrameAvailable(ICameraCaptureDevice device, object sender)
{
if (closeScanner)
{
closeScanner = false;
Deployment.Current.Dispatcher.BeginInvoke(delegate()
{
string resultString = "{\"type\":" + JsonHelper.Serialize("Cancel") + "}";
PluginResult pResult = new PluginResult(PluginResult.Status.OK, resultString);
pResult.KeepCallback = true;
MWBarcodeScanner.mwbScanner.DispatchCommandResult(pResult, MWBarcodeScanner.kallbackID);
if (this.NavigationService.CanGoBack)
{
this.NavigationService.GoBack();
}
return;
});
}
if (activeThreads >= param_maxThreads || resultDisplayed)
{
return;
}
if (isClosing)
{
return;
}
activeThreads++;
// System.Diagnostics.Debug.WriteLine("ActiveThreads: " + activeThreads.ToString());
isProcessing = true;
int len = (int)device.PreviewResolution.Width * (int)device.PreviewResolution.Height;
if (pixels == null)
{
pixels = new byte[len];
}
device.GetPreviewBufferY(pixels);
// Byte[] result = new Byte[10000];
int width = (int)device.PreviewResolution.Width;
int height = (int)device.PreviewResolution.Height;
ThreadArguments ta = new ThreadArguments();
ta.height = height;
ta.width = width;
ta.pixels = pixels;
BackgroundWorker bw1 = new BackgroundWorker();
bw1.WorkerReportsProgress = false;
bw1.WorkerSupportsCancellation = false;
bw1.DoWork += new DoWorkEventHandler(bw_DoWork);
bw1.RunWorkerAsync(ta);
}
void cam_PreviewFrameAvailable(ICameraCaptureDevice device, object sender)
{
if (closeScanner) {
closeScanner = false;
Deployment.Current.Dispatcher.BeginInvoke(delegate()
{
string resultString = "{\"type\":" + JsonHelper.Serialize("Cancel") + "}";
PluginResult pResult = new PluginResult(PluginResult.Status.OK, resultString);
pResult.KeepCallback = true;
MWBarcodeScanner.mwbScanner.DispatchCommandResult(pResult, MWBarcodeScanner.kallbackID);
if (this.NavigationService.CanGoBack) {
this.NavigationService.GoBack();
}
return;
});
}
if (activeThreads >= param_maxThreads || resultDisplayed)
{
return;
}
if (isClosing)
{
return;
}
activeThreads++;
// System.Diagnostics.Debug.WriteLine("ActiveThreads: " + activeThreads.ToString());
isProcessing = true;
int len = (int)device.PreviewResolution.Width * (int)device.PreviewResolution.Height;
if (pixels == null)
pixels = new byte[len];
device.GetPreviewBufferY(pixels);
// Byte[] result = new Byte[10000];
int width = (int)device.PreviewResolution.Width;
int height = (int)device.PreviewResolution.Height;
ThreadArguments ta = new ThreadArguments();
ta.height = height;
ta.width = width;
ta.pixels = pixels;
BackgroundWorker bw1 = new BackgroundWorker();
bw1.WorkerReportsProgress = false;
bw1.WorkerSupportsCancellation = false;
bw1.DoWork += new DoWorkEventHandler(bw_DoWork);
bw1.RunWorkerAsync(ta);
}
private void PhotoCaptureDevice_PreviewFrameAvailable(ICameraCaptureDevice sender, object args)
{
if (_active && !_processing && _device != null)
{
_processing = true;
_device.PreviewFrameAvailable -= PhotoCaptureDevice_PreviewFrameAvailable;
var width = (uint)_device.PreviewResolution.Width;
var height = (uint)_device.PreviewResolution.Height;
byte[] buffer = new byte[width * height];
sender.GetPreviewBufferY(buffer);
var frame = new Frame()
{
Buffer = buffer,
Pitch = width,
Format = FrameFormat.Gray8,
Dimensions = new Windows.Foundation.Size(width, height)
};
Dispatcher.BeginInvoke(async () =>
{
if (_active)
{
var tuple = await ProcessFrameAsync(frame);
_processing = false;
if (_active && _device != null)
{
if (tuple != null && ResultTextBlock.Text != tuple.Item1.Text)
{
_resultTuple = tuple;
ResultTextBlock.Text = _resultTuple.Item1.Text;
ResultImage.Source = _resultTuple.Item2;
if (OpticalReaderTask.Instance.RequireConfirmation)
{
ResultGrid.Visibility = System.Windows.Visibility.Visible;
}
else
{
NavigationService.GoBack();
}
}
_device.PreviewFrameAvailable += PhotoCaptureDevice_PreviewFrameAvailable;
}
}
else
{
_processing = false;
}
});
}
}
void cam_PreviewFrameAvailable(ICameraCaptureDevice device, object sender)
{
if (activeThreads >= param_maxThreads || resultDisplayed)
{
return;
}
if (isClosing)
{
return;
}
activeThreads++;
System.Diagnostics.Debug.WriteLine("ActiveThreads: " + activeThreads.ToString());
isProcessing = true;
int len = (int)device.PreviewResolution.Width * (int)device.PreviewResolution.Height;
if (pixels == null)
pixels = new byte[len];
device.GetPreviewBufferY(pixels);
// Byte[] result = new Byte[10000];
int width = (int)device.PreviewResolution.Width;
int height = (int)device.PreviewResolution.Height;
ThreadArguments ta = new ThreadArguments();
ta.height = height;
ta.width = width;
ta.pixels = pixels;
BackgroundWorker bw1 = new BackgroundWorker();
bw1.WorkerReportsProgress = false;
bw1.WorkerSupportsCancellation = false;
bw1.DoWork += new DoWorkEventHandler(bw_DoWork);
bw1.RunWorkerAsync(ta);
}
void cam_PreviewFrameAvailable(ICameraCaptureDevice device, object sender)
{
if (isProcessing)
{
return;
}
cameraDevice.PreviewFrameAvailable -= previewFrameHandler;
isProcessing = true;
int len = (int)device.PreviewResolution.Width * (int)device.PreviewResolution.Height;
if (pixels == null)
pixels = new byte[len];
device.GetPreviewBufferY(pixels);
// Byte[] result = new Byte[10000];
int width = (int)device.PreviewResolution.Width;
int height = (int)device.PreviewResolution.Height;
ThreadArguments ta = new ThreadArguments();
ta.height = height;
ta.width = width;
ta.pixels = pixels;
Deployment.Current.Dispatcher.BeginInvoke(delegate()
{
bw.RunWorkerAsync(ta);
});
}
