bool HIDDevice::processReadResult()
{
OVR_ASSERT(ReadRequested);
DWORD bytesRead = 0;
if (GetOverlappedResult(Device, &ReadOverlapped, &bytesRead, FALSE))
{
// We've got data.
if (Handler)
{
Handler->OnInputReport(ReadBuffer, bytesRead);
}
// TBD: Not needed?
// Event should be reset by Read call...
ReadOverlapped.Pointer = 0;
ReadOverlapped.Internal = 0;
ReadOverlapped.InternalHigh = 0;
return true;
}
else
{
if (GetLastError() != ERROR_IO_PENDING)
{
closeDeviceOnIOError();
return false;
}
}
return false;
}
//-----------------------------------------------------------------------------
void HIDDevice::OnEvent(int i, int fd)
{
OVR_UNUSED(i);
int bytes = 0;
if(DeviceHandle){
bytes = hid_read(DeviceHandle, ReadBuffer, ReadBufferSize);
}
// We have data to read from the device
//int bytes = read(fd, ReadBuffer, ReadBufferSize);
if (bytes >= 0)
{
// TODO: I need to handle partial messages and package reconstruction
if(bytes > 0){
if (Handler)
{
Handler->OnInputReport(ReadBuffer, bytes);
}
}
}
else
{ // Close the device on read error.
closeDeviceOnIOError();
}
}
bool HIDDevice::initializeRead()
{
if (!ReadRequested)
{
HIDManager->Manager->pThread->AddOverlappedEvent(this, ReadOverlapped.hEvent);
ReadRequested = true;
}
// Read resets the event...
while(::ReadFile(Device, ReadBuffer, InputReportBufferLength, 0, &ReadOverlapped))
{
processReadResult();
}
if (GetLastError() != ERROR_IO_PENDING)
{
// Some other error (such as unplugged).
closeDeviceOnIOError();
return false;
}
return true;
}