private void allocTransfer(UsbEndpointBase endpointBase, bool ownsTransfer, int isoPacketSize, int count)
{
int numIsoPackets = 0;
if (isoPacketSize > 0)
{
numIsoPackets = count / isoPacketSize;
}
freeTransfer();
mTransfer = MonoUsbTransfer.Alloc(numIsoPackets);
mOwnsTransfer = ownsTransfer;
mTransfer.Type = endpointBase.Type;
mTransfer.Endpoint = endpointBase.EpNum;
mTransfer.NumIsoPackets = numIsoPackets;
if (!mCompleteEventHandle.IsAllocated)
{
mCompleteEventHandle = GCHandle.Alloc(mTransferCompleteEvent);
}
mTransfer.PtrUserData = GCHandle.ToIntPtr(mCompleteEventHandle);
if (numIsoPackets > 0)
{
mTransfer.SetIsoPacketLengths(isoPacketSize);
}
}
private static int libusb_control_transfer(MonoUsbDeviceHandle deviceHandle, MonoUsbControlSetupHandle controlSetupHandle, int timeout)
{
MonoUsbTransfer transfer = MonoUsbTransfer.Alloc(0);
ManualResetEvent completeEvent = new ManualResetEvent(false);
GCHandle gcCompleteEvent = GCHandle.Alloc(completeEvent);
transfer.FillControl(deviceHandle, controlSetupHandle, controlTransferDelegate, GCHandle.ToIntPtr(gcCompleteEvent), timeout);
int r = (int)transfer.Submit();
if (r < 0)
{
transfer.Free();
gcCompleteEvent.Free();
return(r);
}
while (!completeEvent.WaitOne(0, false))
{
r = MonoUsbApi.HandleEvents(sessionHandle);
if (r < 0)
{
if (r == (int)MonoUsbError.ErrorInterrupted)
{
continue;
}
transfer.Cancel();
while (!completeEvent.WaitOne(0, false))
{
if (MonoUsbApi.HandleEvents(sessionHandle) < 0)
{
break;
}
}
transfer.Free();
gcCompleteEvent.Free();
return(r);
}
}
if (transfer.Status == MonoUsbTansferStatus.TransferCompleted)
{
r = transfer.ActualLength;
}
else
{
r = (int)MonoUsbApi.MonoLibUsbErrorFromTransferStatus(transfer.Status);
}
transfer.Free();
gcCompleteEvent.Free();
return(r);
}
private void allocTransfer(UsbEndpointBase endpointBase, bool ownsTransfer, int isoPacketSize, int count)
{
int numIsoPackets = 0;
// Patch for using libusb-1.0 on windows with libusbwK.sys
EndpointType endpointType = endpointBase.Type;
if (UsbDevice.IsLinux)
{
if (isoPacketSize > 0)
{
numIsoPackets = count / isoPacketSize;
}
}
else
{
if (endpointType == EndpointType.Isochronous)
{
endpointType = EndpointType.Bulk;
}
}
///////////////////////////////////////////////////////////////
freeTransfer();
mTransfer = MonoUsbTransfer.Alloc(numIsoPackets);
mOwnsTransfer = ownsTransfer;
mTransfer.Type = endpointType;
mTransfer.Endpoint = endpointBase.EpNum;
mTransfer.NumIsoPackets = numIsoPackets;
if (!mCompleteEventHandle.IsAllocated)
{
mCompleteEventHandle = GCHandle.Alloc(mTransferCompleteEvent);
}
mTransfer.PtrUserData = GCHandle.ToIntPtr(mCompleteEventHandle);
if (numIsoPackets > 0)
{
mTransfer.SetIsoPacketLengths(isoPacketSize);
}
}