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Keep reference to hidden USB device while using BT and charging

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Ensures that DS4 USB HID device is not seen by other applications
This commit is contained in:
Travis Nickles 2017-06-07 17:52:09 -07:00
parent ce0ac4f04a
commit cda84e6499
1 changed files with 62 additions and 5 deletions
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67
DS4Windows/DS4Library/DS4Devices.cs
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@ -10,7 +10,9 @@ namespace DS4Windows
public class DS4Devices
{
private static Dictionary<string, DS4Device> Devices = new Dictionary<string, DS4Device>();
private static HashSet<String> DevicePaths = new HashSet<String>();
private static HashSet<string> DevicePaths = new HashSet<string>();
// Keep instance of opened exclusive mode devices not in use (Charging while using BT connection)
private static List<HidDevice> DisabledDevices = new List<HidDevice>();
public static bool isExclusiveMode = false;
private static string devicePathToInstanceId(string devicePath)
@ -27,7 +29,7 @@ namespace DS4Windows
return deviceInstanceId;
}
// enumerates ds4 controllers in the system
// Enumerates ds4 controllers in the system
public static void findControllers()
{
lock (Devices)
@ -38,6 +40,8 @@ namespace DS4Windows
hDevices = hDevices.OrderBy<HidDevice, ConnectionType>((HidDevice d) => { return DS4Device.HidConnectionType(d); });
List<HidDevice> tempList = hDevices.ToList();
purgeHiddenExclusiveDevices();
tempList.AddRange(DisabledDevices);
int devCount = tempList.Count();
string devicePlural = "device" + (devCount == 0 || devCount > 1 ? "s" : "");
//Log.LogToGui("Found " + devCount + " possible " + devicePlural + ". Examining " + devicePlural + ".", false);
@ -97,7 +101,19 @@ namespace DS4Windows
string serial = hDevice.readSerial();
bool validSerial = !serial.Equals(DS4Device.blankSerial);
if (Devices.ContainsKey(serial))
continue; // happens when the BT endpoint already is open and the USB is plugged into the same host
{
// happens when the BT endpoint already is open and the USB is plugged into the same host
if (isExclusiveMode && hDevice.IsExclusive &&
!DisabledDevices.Contains(hDevice))
{
// Grab reference to exclusively opened HidDevice so device
// stays hidden to other processes
DisabledDevices.Add(hDevice);
DevicePaths.Add(hDevice.DevicePath);
}
continue;
}
else
{
DS4Device ds4Device = new DS4Device(hDevice);
@ -126,7 +142,7 @@ namespace DS4Windows
}
}
//returns DS4 controllers that were found and are running
// Returns DS4 controllers that were found and are running
public static IEnumerable<DS4Device> getDS4Controllers()
{
lock (Devices)
@ -153,10 +169,11 @@ namespace DS4Windows
Devices.Clear();
DevicePaths.Clear();
DisabledDevices.Clear();
}
}
//called when devices is diconnected, timed out or has input reading failure
// Called when devices is diconnected, timed out or has input reading failure
public static void On_Removal(object sender, EventArgs e)
{
lock (Devices)
@ -167,6 +184,7 @@ namespace DS4Windows
device.HidDevice.CloseDevice();
Devices.Remove(device.MacAddress);
DevicePaths.Remove(device.HidDevice.DevicePath);
purgeHiddenExclusiveDevices();
}
}
}
@ -190,6 +208,45 @@ namespace DS4Windows
}
}
private static void purgeHiddenExclusiveDevices()
{
int disabledDevCount = DisabledDevices.Count;
if (disabledDevCount > 0)
{
List<HidDevice> disabledDevList = new List<HidDevice>();
for (int i = 0, arlen = disabledDevCount; i < arlen; i++)
{
HidDevice tempDev = DisabledDevices.ElementAt(i);
if (tempDev != null)
{
if (tempDev.IsOpen && tempDev.IsConnected)
{
disabledDevList.Add(tempDev);
}
else if (tempDev.IsOpen)
{
if (!tempDev.IsConnected)
{
try
{
tempDev.CloseDevice();
}
catch { }
}
if (DevicePaths.Contains(tempDev.DevicePath))
{
DevicePaths.Remove(tempDev.DevicePath);
}
}
}
}
DisabledDevices.Clear();
DisabledDevices.AddRange(disabledDevList);
}
}
public static void reEnableDevice(string deviceInstanceId)
{
Stopwatch sw = new Stopwatch();