public Buffer Read()
{
if (first)
{
for (var i = 0; i < depth; i++)
{
buffers[i] = new byte[bufferSize];
}
for (var i = 0; i < depth; i++)
{
queue[i] = pipe.BeginRead(buffers[i], 0, bufferSize, null, null);
}
first = false;
}
var r = queue[index];
var b = buffers[index];
var nb = new byte[bufferSize];
queue[index] = pipe.BeginRead(nb, 0, bufferSize, null, null);
buffers[index] = nb;
var length = pipe.EndRead(r);
index = (index + 1) % depth;
return(new Buffer(b, length));
}
internal void WaitForCompletion()
{
if (asyncResult == null)
{
throw new ScopeIOException("Can't wait for command's completion before executing command");
}
try
{
if (endPoint.IsOut)
{
endPoint.EndWrite(asyncResult);
}
else if (endPoint.IsIn)
{
endPoint.EndRead(asyncResult);
}
else
{
throw new ScopeIOException("Unknown endpoint type");
}
}
catch (USBException e)
{
Error = e;
bytesTransferred = 0;
buffer = null;
return;
}
MadWizard.WinUSBNet.USBAsyncResult usbresult = (MadWizard.WinUSBNet.USBAsyncResult)asyncResult;
if (usbresult.Error != null)
{
Error = usbresult.Error;
success = false;
bytesTransferred = 0;
buffer = null;
}
else
{
bytesTransferred = usbresult.BytesTransfered;
}
}
internal void WaitForCompletion()
{
if (asyncResult == null)
{
throw new ScopeIOException("Can't wait for command's completion before executing command");
}
try
{
if (endPoint.IsOut)
{
endPoint.EndWrite(asyncResult);
}
else if (endPoint.IsIn)
{
endPoint.EndRead(asyncResult);
}
else
{
throw new ScopeIOException("Unknown endpoint type");
}
}
catch (Exception e)
{
throw new ScopeIOException("USB Error occurred: " + e.Message);
}
USBAsyncResult usbresult = (USBAsyncResult)asyncResult;
if (usbresult.Error != null)
{
throw new ScopeIOException("USB Error occurred: " + usbresult.Error.Message);
}
if (usbresult.BytesTransfered != length)
{
throw new ScopeIOException(String.Format("Only transferred {0:d} out of {1:d} bytes", usbresult.BytesTransfered, length));
}
}