internal HidClient(HidDevice device)
{
if (device == null)
{
throw new ArgumentNullException();
}
if (device.IsOpen)
{
throw new NotSupportedException();
}
device.MonitorDeviceEvents = true;
device.OpenDevice(DeviceMode.Overlapped, DeviceMode.Overlapped, ShareMode.ShareRead | ShareMode.ShareWrite);
if (!device.IsOpen)
{
throw new Exception("Device could not be opened");
}
this.device = device;
threadCancelSource = new CancellationTokenSource();
imageQueue = new KeyRepaintQueue(threadCancelSource.Token);
this.device.Inserted += Device_Inserted;
this.device.Removed += Device_Removed;
var numberOfWriterThreads = 1;
var numberOfReadThreads = 1;
var numberOfThreads = numberOfWriterThreads + numberOfReadThreads;
backgroundTasks = new Task[numberOfThreads];
for (int i = 0; i < numberOfWriterThreads; i++)
{
backgroundTasks[i] = Task.Factory.StartNew(() =>
{
byte[] p1Buffer = new byte[HidCommunicationHelper.PagePacketSize];
byte[] p2Buffer = new byte[HidCommunicationHelper.PagePacketSize];
byte[] emptyImage = new byte[HidClient.rawBitmapDataLength];
while (true)
{
var res = imageQueue.Dequeue();
if (!res.success)
{
break;
}
if (res.data == null)
{
res.data = emptyImage;
}
HidCommunicationHelper.GeneratePage1(p1Buffer, res.keyId, res.data);
HidCommunicationHelper.GeneratePage2(p2Buffer, res.keyId, res.data);
device.Write(p1Buffer);
device.Write(p2Buffer);
}
}, TaskCreationOptions.LongRunning);
}
backgroundTasks[numberOfWriterThreads] = Task.Factory.StartNew(() =>
{
var cancelToken = threadCancelSource.Token;
while (true)
{
var rep = device.ReadReport();
if (cancelToken.IsCancellationRequested)
{
return;
}
ProcessNewStates(rep.Data);
}
}, TaskCreationOptions.LongRunning);
}