bool HIDDevice::openDevice()
{
memset(&ReadOverlapped, 0, sizeof(OVERLAPPED));
Device = HIDManager->CreateHIDFile(DevDesc.Path.ToCStr());
if (Device == INVALID_HANDLE_VALUE)
{
OVR_DEBUG_LOG(("Failed 'CreateHIDFile' while opening device, error = 0x%X.",
::GetLastError()));
Device = 0;
return false;
}
if (!HIDManager->HidD_SetNumInputBuffers(Device, 128))
{
OVR_ASSERT_LOG(false, ("Failed 'HidD_SetNumInputBuffers' while initializing device."));
::CloseHandle(Device);
Device = 0;
return false;
}
// Create a manual-reset non-signaled event.
ReadOverlapped.hEvent = ::CreateEvent(0, TRUE, FALSE, 0);
if (!ReadOverlapped.hEvent)
{
OVR_ASSERT_LOG(false, ("Failed to create event."));
::CloseHandle(Device);
Device = 0;
return false;
}
if (!initInfo())
{
OVR_ASSERT_LOG(false, ("Failed to get HIDDevice info."));
::CloseHandle(ReadOverlapped.hEvent);
memset(&ReadOverlapped, 0, sizeof(OVERLAPPED));
::CloseHandle(Device);
Device = 0;
return false;
}
if (!initializeRead())
{
OVR_ASSERT_LOG(false, ("Failed to get intialize read for HIDDevice."));
::CloseHandle(ReadOverlapped.hEvent);
memset(&ReadOverlapped, 0, sizeof(OVERLAPPED));
::CloseHandle(Device);
Device = 0;
return false;
}
return true;
}
MessageHandler::~MessageHandler()
{
MessageHandlerImpl* handlerImpl = MessageHandlerImpl::FromHandler(this);
{
Lock::Locker lockedScope(handlerImpl->pLock);
OVR_ASSERT_LOG(handlerImpl->UseList.IsEmpty(),
("~MessageHandler %p - Handler still active; call RemoveHandlerFromDevices", this));
}
Destruct<MessageHandlerImpl>(handlerImpl);
}
bool HIDDevice::initInfo()
{
// Device must have been successfully opened.
OVR_ASSERT(Device);
// Get report lengths.
HIDP_PREPARSED_DATA* preparsedData = 0;
if (!HIDManager->HidD_GetPreparsedData(Device, &preparsedData))
{
return false;
}
HIDP_CAPS caps;
if (HIDManager->HidP_GetCaps(preparsedData, &caps) != HIDP_STATUS_SUCCESS)
{
HIDManager->HidD_FreePreparsedData(preparsedData);
return false;
}
InputReportBufferLength = caps.InputReportByteLength;
OutputReportBufferLength = caps.OutputReportByteLength;
FeatureReportBufferLength= caps.FeatureReportByteLength;
HIDManager->HidD_FreePreparsedData(preparsedData);
if (ReadBufferSize < InputReportBufferLength)
{
OVR_ASSERT_LOG(false, ("Input report buffer length is bigger than read buffer."));
return false;
}
// Get device desc.
if (!HIDManager->getFullDesc(Device, &DevDesc))
{
OVR_ASSERT_LOG(false, ("Failed to get device desc while initializing device."));
return false;
}
return true;
}
void DeviceStatus::ShutDown()
{
OVR_ASSERT(hMessageWindow);
if (!UnregisterDeviceNotification(hDeviceNotify))
{
OVR_ASSERT_LOG(false, ("Failed to unregister device notification."));
}
PostMessage(hMessageWindow, WM_CLOSE, 0, 0);
while (hMessageWindow != NULL)
{
ProcessMessages();
Sleep(1);
}
if (!UnregisterClass(windowClassName, NULL))
{
OVR_ASSERT_LOG(false, ("Failed to unregister window class."));
}
}
void DeviceStatus::ProcessMessages()
{
OVR_ASSERT_LOG(hMessageWindow != NULL, ("Need to call 'Initialize' before first use."));
MSG msg;
// Note WM_DEVICECHANGED messages are dispatched but not retrieved by PeekMessage.
// I think this is because they are pending, non-queued messages.
while (PeekMessage(&msg, NULL, 0, 0, PM_REMOVE))
{
TranslateMessage(&msg);
DispatchMessage(&msg);
}
}
bool HIDDeviceManager::getStringProperty(IOHIDDeviceRef device,
CFStringRef propertyName,
String* pResult)
{
CFStringRef str = (CFStringRef) IOHIDDeviceGetProperty(device, propertyName);
if (!str)
{
return false;
}
CFIndex length = CFStringGetLength(str);
CFRange range = CFRangeMake(0, length);
// Test the conversion first to get required buffer size.
CFIndex bufferLength;
CFIndex numberOfChars = CFStringGetBytes(str,
range,
kCFStringEncodingUTF8,
(char) '?',
FALSE,
NULL,
0,
&bufferLength);
if (numberOfChars == 0)
{
return false;
}
// Now allocate buffer.
char* buffer = new char[bufferLength+1];
numberOfChars = CFStringGetBytes(str,
range,
kCFStringEncodingUTF8,
(char) '?',
FALSE,
(UInt8*) buffer,
bufferLength,
NULL);
OVR_ASSERT_LOG(numberOfChars != 0, ("CFStringGetBytes failed."));
buffer[bufferLength] = '\0';
*pResult = String(buffer);
return true;
}
bool HIDDevice::initInfo()
{
// Device must have been successfully opened.
OVR_ASSERT(Device);
// Get report lengths.
SInt32 bufferLength;
bool getResult = HIDManager->getIntProperty(Device, CFSTR(kIOHIDMaxInputReportSizeKey), &bufferLength);
OVR_ASSERT(getResult);
InputReportBufferLength = (UInt16) bufferLength;
getResult = HIDManager->getIntProperty(Device, CFSTR(kIOHIDMaxOutputReportSizeKey), &bufferLength);
OVR_ASSERT(getResult);
OutputReportBufferLength = (UInt16) bufferLength;
getResult = HIDManager->getIntProperty(Device, CFSTR(kIOHIDMaxFeatureReportSizeKey), &bufferLength);
OVR_ASSERT(getResult);
FeatureReportBufferLength = (UInt16) bufferLength;
if (ReadBufferSize < InputReportBufferLength)
{
OVR_ASSERT_LOG(false, ("Input report buffer length is bigger than read buffer."));
return false;
}
// Get device desc.
if (!HIDManager->getFullDesc(Device, &DevDesc))
{
OVR_ASSERT_LOG(false, ("Failed to get device desc while initializing device."));
return false;
}
return true;
}
//-----------------------------------------------------------------------------
void HIDDeviceManager::Shutdown()
{
OVR_ASSERT_LOG((UdevInstance), ("Should have called 'Initialize' before 'Shutdown'."));
if (HIDMonitor)
{
DevManager->pThread->RemoveSelectFd(this, HIDMonHandle);
close(HIDMonHandle);
HIDMonHandle = -1;
udev_monitor_unref(HIDMonitor);
HIDMonitor = NULL;
}
udev_unref(UdevInstance); // release the library
LogText("OVR::Linux::HIDDeviceManager - shutting down.\n");
}
//-----------------------------------------------------------------------------
bool HIDDevice::initInfo()
{
// Device must have been successfully opened.
OVR_ASSERT(DeviceHandle >= 0);
// Get report lengths.
// TODO: hard-coded for now. Need to interpret these values from the report descriptor
InputReportBufferLength = 62;
OutputReportBufferLength = 0;
FeatureReportBufferLength = 69;
if (ReadBufferSize < InputReportBufferLength)
{
OVR_ASSERT_LOG(false, ("Input report buffer length is bigger than read buffer."));
return false;
}
return true;
}
void StringBuffer::AppendFormat(const char* format, ...)
{
va_list argList;
va_start(argList, format);
UPInt size = OVR_vscprintf(format, argList);
va_end(argList);
char* buffer = (char*) OVR_ALLOC(sizeof(char) * (size+1));
va_start(argList, format);
UPInt result = OVR_vsprintf(buffer, size+1, format, argList);
OVR_UNUSED1(result);
va_end(argList);
OVR_ASSERT_LOG(result == size, ("Error in OVR_vsprintf"));
AppendString(buffer);
OVR_FREE(buffer);
}
//-----------------------------------------------------------------------------
// Render a value to text.
char* JSON::PrintValue(int depth, bool fmt)
{
char *out=0;
switch (Type)
{
case JSON_Null: out = JSON_strdup("null"); break;
case JSON_Bool:
if ((int)dValue == 0)
out = JSON_strdup("false");
else
out = JSON_strdup("true");
break;
case JSON_Number: out = PrintNumber(dValue); break;
case JSON_String: out = PrintString(Value); break;
case JSON_Array: out = PrintArray(depth, fmt); break;
case JSON_Object: out = PrintObject(depth, fmt); break;
case JSON_None: OVR_ASSERT_LOG(false, ("Bad JSON type.")); break;
}
return out;
}
bool DeviceStatus::Initialize()
{
WNDCLASS wndClass;
wndClass.style = CS_HREDRAW | CS_VREDRAW;
wndClass.lpfnWndProc = WindowsMessageCallback;
wndClass.cbClsExtra = 0;
wndClass.cbWndExtra = 0;
wndClass.hInstance = 0;
wndClass.hIcon = LoadIcon(NULL, IDI_APPLICATION);
wndClass.hCursor = LoadCursor(NULL, IDC_ARROW);
wndClass.hbrBackground = (HBRUSH) (COLOR_WINDOW + 1);
wndClass.lpszMenuName = NULL;
wndClass.lpszClassName = windowClassName;
if (!RegisterClass(&wndClass))
{
OVR_ASSERT_LOG(false, ("Failed to register window class."));
return false;
}
// We're going to create a 'message-only' window. This will be hidden, can't be enumerated etc.
// To do this we supply 'HWND_MESSAGE' as the hWndParent.
// http://msdn.microsoft.com/en-us/library/ms632599%28VS.85%29.aspx#message_only
hMessageWindow = CreateWindow( windowClassName,
windowClassName,
WS_OVERLAPPEDWINDOW,
CW_USEDEFAULT,
CW_USEDEFAULT,
CW_USEDEFAULT,
CW_USEDEFAULT,
HWND_MESSAGE,
NULL,
0,
this); // Pass this object via the CREATESTRUCT mechanism
// so that we can attach it to the window user data.
if (hMessageWindow == NULL)
{
OVR_ASSERT_LOG(false, ("Failed to create window."));
return false;
}
// According to MS, topmost windows receive WM_DEVICECHANGE faster.
::SetWindowPos(hMessageWindow, HWND_TOPMOST, 0, 0, 0, 0, SWP_NOMOVE|SWP_NOSIZE);
UpdateWindow(hMessageWindow);
// Register notification for additional HID messages.
HIDDeviceManager* hidDeviceManager = new HIDDeviceManager(NULL);
HidGuid = hidDeviceManager->GetHIDGuid();
hidDeviceManager->Release();
DEV_BROADCAST_DEVICEINTERFACE notificationFilter;
ZeroMemory(¬ificationFilter, sizeof(notificationFilter));
notificationFilter.dbcc_size = sizeof(DEV_BROADCAST_DEVICEINTERFACE);
notificationFilter.dbcc_devicetype = DBT_DEVTYP_DEVICEINTERFACE;
//notificationFilter.dbcc_classguid = hidguid;
// We need DEVICE_NOTIFY_ALL_INTERFACE_CLASSES to detect
// HDMI plug/unplug events.
hDeviceNotify = RegisterDeviceNotification(
hMessageWindow,
¬ificationFilter,
DEVICE_NOTIFY_ALL_INTERFACE_CLASSES|DEVICE_NOTIFY_WINDOW_HANDLE);
if (hDeviceNotify == NULL)
{
OVR_ASSERT_LOG(false, ("Failed to register for device notifications."));
return false;
}
return true;
}
DeviceStatus::~DeviceStatus()
{
OVR_ASSERT_LOG(hMessageWindow == NULL, ("Need to call 'ShutDown' from DeviceManagerThread."));
}
int DeviceManagerThread::Run()
{
SetThreadName("OVR::DeviceManagerThread");
LogText("OVR::DeviceManagerThread - running (ThreadId=0x%p).\n", GetThreadId());
// Store out the run loop ref.
RunLoop = CFRunLoopGetCurrent();
// Create a 'source' to enable us to signal the run loop to process the command queue.
CFRunLoopSourceContext sourceContext;
memset(&sourceContext, 0, sizeof(sourceContext));
sourceContext.version = 0;
sourceContext.info = this;
sourceContext.perform = &staticCommandQueueSourceCallback;
CommandQueueSource = CFRunLoopSourceCreate(kCFAllocatorDefault, 0 , &sourceContext);
CFRunLoopAddSource(RunLoop, CommandQueueSource, kCFRunLoopDefaultMode);
// Signal to the parent thread that initialization has finished.
StartupEvent.SetEvent();
ThreadCommand::PopBuffer command;
while(!IsExiting())
{
// PopCommand will reset event on empty queue.
if (PopCommand(&command))
{
command.Execute();
}
else
{
SInt32 exitReason = 0;
do {
UInt32 waitMs = INT_MAX;
// If devices have time-dependent logic registered, get the longest wait
// allowed based on current ticks.
if (!TicksNotifiers.IsEmpty())
{
UInt64 ticksMks = Timer::GetTicks();
UInt32 waitAllowed;
for (UPInt j = 0; j < TicksNotifiers.GetSize(); j++)
{
waitAllowed = (UInt32)(TicksNotifiers[j]->OnTicks(ticksMks) / Timer::MksPerMs);
if (waitAllowed < waitMs)
waitMs = waitAllowed;
}
}
// Enter blocking run loop. We may continue until we timeout in which
// case it's time to service the ticks. Or if commands arrive in the command
// queue then the source callback will call 'CFRunLoopStop' causing this
// to return.
CFTimeInterval blockInterval = 0.001 * (double) waitMs;
exitReason = CFRunLoopRunInMode(kCFRunLoopDefaultMode, blockInterval, false);
if (exitReason == kCFRunLoopRunFinished)
{
// Maybe this will occur during shutdown?
break;
}
else if (exitReason == kCFRunLoopRunStopped )
{
// Commands need processing or we're being shutdown.
break;
}
else if (exitReason == kCFRunLoopRunTimedOut)
{
// Timed out so that we can service our ticks callbacks.
continue;
}
else if (exitReason == kCFRunLoopRunHandledSource)
{
// Should never occur since the last param when we call
// 'CFRunLoopRunInMode' is false.
OVR_ASSERT(false);
break;
}
else
{
OVR_ASSERT_LOG(false, ("CFRunLoopRunInMode returned unexpected code"));
break;
}
}
while(true);
}
}
CFRunLoopRemoveSource(RunLoop, CommandQueueSource, kCFRunLoopDefaultMode);
CFRelease(CommandQueueSource);
LogText("OVR::DeviceManagerThread - exiting (ThreadId=0x%p).\n", GetThreadId());
return 0;
}
