BOOL OpenContext::StartControlTransfer(LPUKWD_CONTROL_TRANSFER_INFO lpTransferInfo)
{
MutexLocker lock(mMutex);
DevicePtr dev (mDevice->GetDeviceList(), lpTransferInfo->lpDevice);
if (!Validate(dev)) {
SetLastError(ERROR_INVALID_HANDLE);
return FALSE;
}
TRANSFERLIFETIME_MSG((TEXT("USBKWrapperDrv!OpenContext::StartControlTransfer() with ")
TEXT("bmRequestType 0x%02x, bRequest 0x%02x, wValue 0x%04x, wIndex 0x%04x, wLength %d, flags 0x%08x and size %d\r\n"),
lpTransferInfo->Header.bmRequestType, lpTransferInfo->Header.bRequest, lpTransferInfo->Header.wValue,
lpTransferInfo->Header.wIndex, lpTransferInfo->Header.wLength, lpTransferInfo->dwFlags,
lpTransferInfo->dwDataBufferSize));
// Construct and start the control transfer
ControlTransfer* ct = new (std::nothrow) ControlTransfer(
this, dev, lpTransferInfo);
if (!ct) {
ERROR_MSG((TEXT("USBKWrapperDrv!OpenContext::StartControlTransfer() - failed to create control transfer, aborting\r\n")));
SetLastError(ERROR_NOT_ENOUGH_MEMORY);
return FALSE;
}
BOOL ret = ct->Start();
mTransferList->PutTransfer(ct);
ct = NULL;
if (!ret) {
ERROR_MSG((TEXT("USBKWrapperDrv!OpenContext::StartControlTransfer() - failed to start control transfer %d\r\n"), GetLastError()));
return FALSE;
}
// Ownership of ct has passed to the transfer callback
return TRUE;
}
BOOL OpenContext::StartBulkTransfer(LPUKWD_BULK_TRANSFER_INFO lpTransferInfo)
{
MutexLocker lock(mMutex);
DevicePtr dev (mDevice->GetDeviceList(), lpTransferInfo->lpDevice);
if (!Validate(dev)) {
SetLastError(ERROR_INVALID_HANDLE);
return FALSE;
}
// Interface can't be used if device has closed
if (dev->Closed()) {
SetLastError(ERROR_INVALID_HANDLE);
return FALSE;
}
// Find the interface for this transfer
DWORD dwInterface;
if (!dev->FindInterface(lpTransferInfo->Endpoint, dwInterface)) {
ERROR_MSG((TEXT("USBKWrapperDrv!OpenContext::StartBulkTransfer() - ")
TEXT("failed to find interface for endpoint %d on device 0x%08x\r\n"),
lpTransferInfo->Endpoint, lpTransferInfo->lpDevice));
SetLastError(ERROR_INVALID_PARAMETER);
return FALSE;
}
// See if it's already been claimed
if (!dev->InterfaceClaimed(dwInterface, this)) {
WARN_MSG((TEXT("USBKWrapperDrv!OpenContext::StartBulkTransfer() - ")
TEXT("using interface %d on device 0x%08x without claiming\r\n"),
dwInterface, lpTransferInfo->lpDevice));
if (!dev->ClaimInterface(dwInterface, this)) {
return FALSE;
}
}
TRANSFERLIFETIME_MSG((TEXT("USBKWrapperDrv!OpenContext::StartBulkTransfer() on ep %x, flag 0x%08x and size %d\r\n"),
lpTransferInfo->Endpoint, lpTransferInfo->dwFlags, lpTransferInfo->dwDataBufferSize));
// Construct and start the bulk transfer
BulkTransfer* bt = new (std::nothrow) BulkTransfer(
this, dev, dwInterface, lpTransferInfo);
if (!bt) {
ERROR_MSG((TEXT("USBKWrapperDrv!OpenContext::StartBulkTransfer() - failed to create bulk transfer, aborting\r\n")));
SetLastError(ERROR_NOT_ENOUGH_MEMORY);
return FALSE;
}
BOOL ret = bt->Start();
mTransferList->PutTransfer(bt);
bt = NULL;
if (!ret) {
ERROR_MSG((TEXT("USBKWrapperDrv!OpenContext::StartBulkTransfer() - failed to start bulk transfer %d\r\n"), GetLastError()));
return FALSE;
}
// Ownership of ct has passed to the transfer callback
return TRUE;
}
BOOL OpenContext::CancelTransfer(LPUKWD_CANCEL_TRANSFER_INFO lpCancelInfo)
{
MutexLocker lock(mMutex);
TransferPtr transfer(this, lpCancelInfo->lpOverlapped);
if (!transfer.Valid()) {
TRANSFERLIFETIME_MSG((TEXT("USBKWrapperDrv!OpenContext::CancelTransfer() - failed to find transfer to cancel\r\n")));
return FALSE;
}
return transfer->Cancel(lpCancelInfo->lpDevice, lpCancelInfo->dwFlags);
}
