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diff --git a/LibOVR/Src/OVR_Win32_DeviceStatus.cpp b/LibOVR/Src/OVR_Win32_DeviceStatus.cpp
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-/************************************************************************************
-
-Filename : OVR_Win32_DeviceStatus.cpp
-Content : Win32 implementation of DeviceStatus.
-Created : January 24, 2013
-Authors : Lee Cooper
-
-Copyright : Copyright 2014 Oculus VR, Inc. All Rights reserved.
-
-Licensed under the Oculus VR Rift SDK License Version 3.1 (the "License");
-you may not use the Oculus VR Rift SDK except in compliance with the License,
-which is provided at the time of installation or download, or which
-otherwise accompanies this software in either electronic or hard copy form.
-
-You may obtain a copy of the License at
-
-http://www.oculusvr.com/licenses/LICENSE-3.1
-
-Unless required by applicable law or agreed to in writing, the Oculus VR SDK
-distributed under the License is distributed on an "AS IS" BASIS,
-WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-See the License for the specific language governing permissions and
-limitations under the License.
-
-*************************************************************************************/
-
-#include "OVR_Win32_DeviceStatus.h"
-
-#include "OVR_Win32_HIDDevice.h"
-
-#include "Kernel/OVR_Log.h"
-
-#include <dbt.h>
-
-namespace OVR { namespace Win32 {
-
-static TCHAR windowClassName[] = TEXT("LibOVR_DeviceStatus_WindowClass");
-
-#define STATIC_KSCATEGORY_VIDEO_CAMERA \
- 0xe5323777, 0xf976, 0x4f5b, { 0x9b, 0x55, 0xb9, 0x46, 0x99, 0xc4, 0x6e, 0x44 }
-
-
-//-------------------------------------------------------------------------------------
-DeviceStatus::DeviceStatus(Notifier* const pClient)
- : pNotificationClient(pClient), LastTimerId(0)
-{
-}
-
-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(&notificationFilter, 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,
- &notificationFilter,
- 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;
-}
-
-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."));
- }
-}
-
-DeviceStatus::~DeviceStatus()
-{
- OVR_ASSERT_LOG(hMessageWindow == NULL, ("Need to call 'ShutDown' from DeviceManagerThread."));
-}
-
-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 DeviceStatus::MessageCallback(WORD messageType, const String& devicePath)
-{
- bool rv = true;
- if (messageType == DBT_DEVICEARRIVAL)
- {
- rv = pNotificationClient->OnMessage(Notifier::DeviceAdded, devicePath);
- }
- else if (messageType == DBT_DEVICEREMOVECOMPLETE)
- {
- pNotificationClient->OnMessage(Notifier::DeviceRemoved, devicePath);
- }
- else
- {
- OVR_ASSERT(0);
- }
- return rv;
-}
-
-void DeviceStatus::CleanupRecoveryTimer(UPInt index)
-{
- ::KillTimer(hMessageWindow, RecoveryTimers[index].TimerId);
- RecoveryTimers.RemoveAt(index);
-}
-
-DeviceStatus::RecoveryTimerDesc*
-DeviceStatus::FindRecoveryTimer(UINT_PTR timerId, UPInt* pindex)
-{
- for (UPInt i = 0, n = RecoveryTimers.GetSize(); i < n; ++i)
- {
- RecoveryTimerDesc* pdesc = &RecoveryTimers[i];
- if (pdesc->TimerId == timerId)
- {
- *pindex = i;
- return pdesc;
- }
- }
- return NULL;
-}
-
-void DeviceStatus::FindAndCleanupRecoveryTimer(const String& devicePath)
-{
- for (UPInt i = 0, n = RecoveryTimers.GetSize(); i < n; ++i)
- {
- RecoveryTimerDesc* pdesc = &RecoveryTimers[i];
- if (pdesc->DevicePath.CompareNoCase(devicePath))
- {
- CleanupRecoveryTimer(i);
- break;
- }
- }
-}
-
-LRESULT CALLBACK DeviceStatus::WindowsMessageCallback( HWND hwnd,
- UINT message,
- WPARAM wParam,
- LPARAM lParam)
-{
- switch (message)
- {
- case WM_CREATE:
- {
- // Setup window user data with device status object pointer.
- LPCREATESTRUCT create_struct = reinterpret_cast<LPCREATESTRUCT>(lParam);
- void *lpCreateParam = create_struct->lpCreateParams;
- DeviceStatus *pDeviceStatus = reinterpret_cast<DeviceStatus*>(lpCreateParam);
-
- SetWindowLongPtr(hwnd, GWLP_USERDATA, reinterpret_cast<LONG_PTR>(pDeviceStatus));
- }
- return 0; // Return 0 for successfully handled WM_CREATE.
-
- case WM_DEVICECHANGE:
- {
- WORD loword = LOWORD(wParam);
-
- if (loword != DBT_DEVICEARRIVAL &&
- loword != DBT_DEVICEREMOVECOMPLETE)
- {
- // Ignore messages other than device arrive and remove complete
- // (we're not handling intermediate ones).
- return TRUE; // Grant WM_DEVICECHANGE request.
- }
-
- DEV_BROADCAST_DEVICEINTERFACE* hdr;
- hdr = (DEV_BROADCAST_DEVICEINTERFACE*) lParam;
-
- if (hdr->dbcc_devicetype != DBT_DEVTYP_DEVICEINTERFACE)
- {
- // Ignore non interface device messages.
- return TRUE; // Grant WM_DEVICECHANGE request.
- }
-
- LONG_PTR userData = GetWindowLongPtr(hwnd, GWLP_USERDATA);
- OVR_ASSERT(userData != NULL);
-
- // Call callback on device messages object with the device path.
- DeviceStatus* pDeviceStatus = (DeviceStatus*) userData;
- String devicePath(hdr->dbcc_name);
-
- static const GUID videoCamGuid = { STATIC_KSCATEGORY_VIDEO_CAMERA };
- // check if HID device caused the event...
- if (pDeviceStatus->HidGuid == hdr->dbcc_classguid ||
- videoCamGuid == hdr->dbcc_classguid)
- {
- // check if recovery timer is already running; stop it and
- // remove it, if so.
- pDeviceStatus->FindAndCleanupRecoveryTimer(devicePath);
-
- if (!pDeviceStatus->MessageCallback(loword, devicePath))
- {
- // hmmm.... unsuccessful
- if (loword == DBT_DEVICEARRIVAL)
- {
- // Windows sometimes may return errors ERROR_SHARING_VIOLATION and
- // ERROR_FILE_NOT_FOUND when trying to open an USB device via
- // CreateFile. Need to start a recovery timer that will try to
- // re-open the device again.
- OVR_DEBUG_LOG(("Adding failed, recovering through a timer..."));
- UINT_PTR tid = ::SetTimer(hwnd, ++pDeviceStatus->LastTimerId,
- USBRecoveryTimeInterval, NULL);
- RecoveryTimerDesc rtDesc;
- rtDesc.TimerId = tid;
- rtDesc.DevicePath = devicePath;
- rtDesc.NumAttempts= 0;
- pDeviceStatus->RecoveryTimers.PushBack(rtDesc);
- // wrap around the timer counter, avoid timerId == 0...
- if (pDeviceStatus->LastTimerId + 1 == 0)
- pDeviceStatus->LastTimerId = 0;
- }
- }
- }
- // Check if Oculus HDMI device was plugged/unplugged, preliminary
- // filtering. (is there any way to get GUID? !AB)
- //else if (strstr(devicePath.ToCStr(), "DISPLAY#"))
- else if (strstr(devicePath.ToCStr(), "#OVR00"))
- {
- pDeviceStatus->MessageCallback(loword, devicePath);
- }
- }
- return TRUE; // Grant WM_DEVICECHANGE request.
-
- case WM_TIMER:
- {
- if (wParam != 0)
- {
- LONG_PTR userData = GetWindowLongPtr(hwnd, GWLP_USERDATA);
- OVR_ASSERT(userData != NULL);
-
- // Call callback on device messages object with the device path.
- DeviceStatus* pDeviceStatus = (DeviceStatus*) userData;
-
- // Check if we have recovery timer running (actually, we must be!)
- UPInt rtIndex;
- RecoveryTimerDesc* prtDesc = pDeviceStatus->FindRecoveryTimer(wParam, &rtIndex);
- if (prtDesc)
- {
- if (pDeviceStatus->MessageCallback(DBT_DEVICEARRIVAL, prtDesc->DevicePath))
- {
- OVR_DEBUG_LOG(("Recovered, adding is successful, cleaning up the timer..."));
- // now it is successful, kill the timer and cleanup
- pDeviceStatus->CleanupRecoveryTimer(rtIndex);
- }
- else
- {
- if (++prtDesc->NumAttempts >= MaxUSBRecoveryAttempts)
- {
- OVR_DEBUG_LOG(("Failed to recover USB after %d attempts, path = '%s', aborting...",
- prtDesc->NumAttempts, prtDesc->DevicePath.ToCStr()));
- pDeviceStatus->CleanupRecoveryTimer(rtIndex);
- }
- else
- {
- OVR_DEBUG_LOG(("Failed to recover USB, %d attempts, path = '%s'",
- prtDesc->NumAttempts, prtDesc->DevicePath.ToCStr()));
- }
- }
- }
- }
- }
- return 0;
-
- case WM_CLOSE:
- {
- LONG_PTR userData = GetWindowLongPtr(hwnd, GWLP_USERDATA);
- OVR_ASSERT(userData != NULL);
- DeviceStatus* pDeviceStatus = (DeviceStatus*) userData;
- pDeviceStatus->hMessageWindow = NULL;
-
- DestroyWindow(hwnd);
- }
- return 0; // We processed the WM_CLOSE message.
-
- case WM_DESTROY:
- PostQuitMessage(0);
- return 0; // We processed the WM_DESTROY message.
- }
-
- return DefWindowProc(hwnd, message, wParam, lParam);
-}
-
-}} // namespace OVR::Win32
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