- initial import

src/engine/helper/HL_Usb.cpp

@@ -0,0 +1,109 @@
+#include "HL_Usb.h"
+#include "HL_Exception.h"
+#ifdef TARGET_WIN
+#include <devguid.h>
+
+#define ADR_WINDOW_CLASS_NAME L"HIDDEN_USB_CHANGE_DELEGATE_WINDOWCLASS_%u"
+#define ADR_WINDOW_NAME L"HIDDEN_USB_CHANGE_DELEGATE_WINDOW_%u"
+
+UsbChangeListener::UsbChangeListener()
+:mNotifyHandle(NULL), mHiddenWindow(NULL), mDelegate(NULL)
+{
+  wsprintf(mWindowClassName, ADR_WINDOW_CLASS_NAME, (unsigned int)rand());
+}
+
+UsbChangeListener::~UsbChangeListener()
+{
+  stop();
+}
+
+void UsbChangeListener::setDelegate(Delegate* d)
+{
+  mDelegate = d;
+}
+
+UsbChangeListener::Delegate* UsbChangeListener::getDelegate() const
+{
+  return mDelegate;
+}
+
+void UsbChangeListener::start()
+{
+  // Exposing Window to Mixer
+	WNDCLASSEX wcx;
+	memset( &wcx, 0, sizeof(WNDCLASSEX) );	
+	wcx.cbSize = sizeof(WNDCLASSEX);
+  wcx.lpszClassName = mWindowClassName;
+	wcx.lpfnWndProc = (WNDPROC)ADRWindowProc;
+	::RegisterClassEx(&wcx);
+
+  wchar_t windowname[128]; 
+  wsprintf(windowname, ADR_WINDOW_NAME, rand());
+	mHiddenWindow = CreateWindow(	mWindowClassName,
+							windowname,
+							WS_POPUP | WS_DISABLED,
+							0, 0, 0, 0,
+							NULL, NULL, NULL, NULL );
+	if (!mHiddenWindow)
+    throw Exception(ERR_CREATEWINDOW, GetLastError());
+  if (!SetWindowLongPtr(mHiddenWindow, GWLP_USERDATA, (LONG_PTR)this))
+    throw Exception(ERR_CREATEWINDOW, GetLastError());
+
+  // Adjust notification filter
+  memset(&mNotificationFilter, 0, sizeof(mNotificationFilter));
+ 
+  mNotificationFilter.dbcc_size = sizeof(DEV_BROADCAST_DEVICEINTERFACE); 
+  mNotificationFilter.dbcc_devicetype = DBT_DEVTYP_DEVICEINTERFACE;
+ 
+  // Register notification
+  if (!RegisterDeviceNotification(mHiddenWindow, &mNotificationFilter, DEVICE_NOTIFY_WINDOW_HANDLE | DEVICE_NOTIFY_ALL_INTERFACE_CLASSES))
+    throw Exception(ERR_REGISTERNOTIFICATION, GetLastError());
+}
+
+LRESULT CALLBACK UsbChangeListener::ADRWindowProc( HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam )
+{
+	if ( uMsg == WM_DEVICECHANGE )
+	{
+    if (wParam == DBT_DEVICEARRIVAL || wParam == DBT_DEVICEREMOVECOMPLETE)
+    {
+      LONG_PTR l = GetWindowLongPtr(hwnd, GWLP_USERDATA);
+      if (l)
+      {
+        UsbChangeListener* obj = reinterpret_cast<UsbChangeListener*>(l);
+        switch (wParam)
+        {
+        case DBT_DEVICEARRIVAL:
+          obj->getDelegate()->onDeviceInsert(NULL);
+          break;
+
+        case DBT_DEVICEREMOVECOMPLETE:
+          obj->getDelegate()->onDeviceRemove(NULL);
+          break;
+        }
+      }
+    }
+	}
+	return ::DefWindowProc( hwnd, uMsg, wParam, lParam);
+}
+
+
+void UsbChangeListener::stop()
+{
+  // Unregister
+  if (mNotifyHandle != NULL)
+  {
+    ::UnregisterDeviceNotification(mNotifyHandle); 
+    mNotifyHandle = NULL;
+  }
+
+  //Destroy the window
+  if (mHiddenWindow != NULL)
+  {
+    ::DestroyWindow(mHiddenWindow);
+    mHiddenWindow = NULL;
+
+    ::UnregisterClass(mWindowClassName, NULL);
+  }
+}
+
+#endif