Patch for DS4Windows to skip grabbing virtual DS4 controllers. Will be needed if DS4 emulation gets integrated

skipvirtualds4.diff

diff --git a/DS4Windows/DS4Control/ScpUtil.cs b/DS4Windows/DS4Control/ScpUtil.cs
index f5ccddc..c4111ef 100644
--- a/DS4Windows/DS4Control/ScpUtil.cs
+++ b/DS4Windows/DS4Control/ScpUtil.cs
@@ -334,6 +334,34 @@ namespace DS4Windows
             return result;
         }
 
+        internal static string GetDeviceProperty(string deviceInstanceId,
+            NativeMethods.DEVPROPKEY prop)
+        {
+            string result = string.Empty;
+            NativeMethods.SP_DEVINFO_DATA deviceInfoData = new NativeMethods.SP_DEVINFO_DATA();
+            deviceInfoData.cbSize = System.Runtime.InteropServices.Marshal.SizeOf(deviceInfoData);
+            var dataBuffer = new byte[4096];
+            ulong propertyType = 0;
+            var requiredSize = 0;
+
+            Guid hidGuid = new Guid();
+            NativeMethods.HidD_GetHidGuid(ref hidGuid);
+            IntPtr deviceInfoSet = NativeMethods.SetupDiGetClassDevs(ref hidGuid, deviceInstanceId, 0, NativeMethods.DIGCF_PRESENT | NativeMethods.DIGCF_DEVICEINTERFACE);
+            NativeMethods.SetupDiEnumDeviceInfo(deviceInfoSet, 0, ref deviceInfoData);
+            if (NativeMethods.SetupDiGetDeviceProperty(deviceInfoSet, ref deviceInfoData, ref prop, ref propertyType,
+                    dataBuffer, dataBuffer.Length, ref requiredSize, 0))
+            {
+                result = dataBuffer.ToUTF16String();
+            }
+
+            if (deviceInfoSet.ToInt64() != NativeMethods.INVALID_HANDLE_VALUE)
+            {
+                NativeMethods.SetupDiDestroyDeviceInfoList(deviceInfoSet);
+            }
+
+            return result;
+        }
+
         public static bool IsHidGuardianInstalled()
         {
             return CheckForSysDevice(@"Root\HidGuardian");
diff --git a/DS4Windows/DS4Library/DS4Devices.cs b/DS4Windows/DS4Library/DS4Devices.cs
index c97ea87..8ce525b 100644
--- a/DS4Windows/DS4Library/DS4Devices.cs
+++ b/DS4Windows/DS4Library/DS4Devices.cs
@@ -60,12 +60,22 @@ namespace DS4Windows
             return deviceInstanceId;
         }
 
+        private static bool IsRealDS4(HidDevice hDevice)
+        {
+            string deviceInstanceId = devicePathToInstanceId(hDevice.DevicePath);
+            string temp = Global.GetDeviceProperty(deviceInstanceId,
+                NativeMethods.DEVPKEY_Device_UINumber);
+            return string.IsNullOrEmpty(temp);
+        }
+
         // Enumerates ds4 controllers in the system
         public static void findControllers()
         {
             lock (Devices)
             {
                 IEnumerable<HidDevice> hDevices = HidDevices.EnumerateDS4(knownDevices);
+                hDevices = hDevices.Where(dev => IsRealDS4(dev)).Select(dev => dev);
+                //hDevices = from dev in hDevices where IsRealDS4(dev) select dev;
                 // Sort Bluetooth first in case USB is also connected on the same controller.
                 hDevices = hDevices.OrderBy<HidDevice, ConnectionType>((HidDevice d) => { return DS4Device.HidConnectionType(d); });
 
diff --git a/DS4Windows/HidLibrary/NativeMethods.cs b/DS4Windows/HidLibrary/NativeMethods.cs
index 8ee0adf..1fca5dd 100644
--- a/DS4Windows/HidLibrary/NativeMethods.cs
+++ b/DS4Windows/HidLibrary/NativeMethods.cs
@@ -234,6 +234,9 @@ namespace DS4Windows
         internal static DEVPROPKEY DEVPKEY_Device_HardwareIds =
             new DEVPROPKEY { fmtid = new Guid(0xa45c254e, 0xdf1c, 0x4efd, 0x80, 0x20, 0x67, 0xd1, 0x46, 0xa8, 0x50, 0xe0), pid = 3 };
 
+        internal static DEVPROPKEY DEVPKEY_Device_UINumber =
+            new DEVPROPKEY { fmtid = new Guid(0xa45c254e, 0xdf1c, 0x4efd, 0x80, 0x20, 0x67, 0xd1, 0x46, 0xa8, 0x50, 0xe0), pid = 18 };
+
         [DllImport("setupapi.dll", EntryPoint = "SetupDiGetDeviceRegistryProperty")]
         public static extern bool SetupDiGetDeviceRegistryProperty(IntPtr deviceInfoSet, ref SP_DEVINFO_DATA deviceInfoData, int propertyVal, ref int propertyRegDataType, byte[] propertyBuffer, int propertyBufferSize, ref int requiredSize);