USB: Improve Force Feedback test so it doesn't block UI

pcsx2/USB/usb-pad/dx/dinput-config.cpp

@@ -53,6 +53,10 @@ namespace usb_pad
 		int32_t FFMULTI[2][1];
 		int32_t INVERTFORCES[2]{};
 
+		// FFB test
+		bool ffbTestRunning = false;
+		unsigned int ffbTestStage = 0;
+
 		bool dialogOpen = false;
 
 		HWND hKey;
@@ -685,6 +689,14 @@ namespace usb_pad
 			EndPaint(hWnd, &Ps);
 		}
 
+		void EndFFBTest()
+		{
+			if (std::exchange(ffbTestRunning, false))
+			{
+				KillTimer(hWnd, 23);
+			}
+		}
+
 		INT_PTR CALLBACK StaticProc(HWND hDlg, UINT uMsg, WPARAM wParam, LPARAM lParam)
 		{
 			(*pFnPrevFunc)(hDlg, uMsg, wParam, lParam);
@@ -890,6 +902,16 @@ namespace usb_pad
 							ControlTest(s->port);
 							break;
 						}
+						case 23:
+						{
+							s = (DXDlgSettings*)GetWindowLongPtr(hDlg, GWLP_USERDATA);
+							if (!UpdateTestForce(s->port, ffbTestStage++))
+							{
+								EndTestForce(s->port);
+								EndFFBTest();
+							}
+							break;
+						}
 					}
 					break;
 				}
@@ -933,6 +955,7 @@ namespace usb_pad
 							//SendMessage(hWnd, WM_CLOSE, 0, 0);
 							//return TRUE;
 							dialogOpen = false;
+							EndFFBTest();
 							FreeDirectInput();
 							EndDialog(hWnd, TRUE);
 							return TRUE;
@@ -943,6 +966,7 @@ namespace usb_pad
 							//Seems to create some dead locks
 							//SendMessage(hWnd, WM_CLOSE, 0, 0);
 							dialogOpen = false;
+							EndFFBTest();
 							FreeDirectInput();
 							EndDialog(hWnd, FALSE);
 							return TRUE;
@@ -950,9 +974,20 @@ namespace usb_pad
 						break;
 						case IDC_BUTTON1:
 						{
-							//MessageBeep(MB_ICONEXCLAMATION);
+							if (!ffbTestRunning)
+							{
 								ApplySettings(s->port);
-							TestForce(s->port);
+								if (StartTestForce(s->port))
+								{
+									if (UpdateTestForce(s->port, 0))
+									{
+										// Start a timer to "tick" the FFB test every 500ms
+										ffbTestStage = 1;
+										SetTimer(hWnd, 23, 500, nullptr);
+										ffbTestRunning = true;
+									}
+								}
+							}
 						}
 						break;
 
@@ -1179,6 +1214,7 @@ namespace usb_pad
 				case WM_CLOSE:
 				{
 					dialogOpen = false;
+					EndFFBTest();
 					FreeDirectInput();
 					EndDialog(hWnd, 0);
 				}

pcsx2/USB/usb-pad/dx/dinput.cpp

@@ -429,13 +429,13 @@ namespace usb_pad
 			}
 		}
 
-		void UpdateFFBSettings(int port, LPDIRECTINPUTDEVICE8 device)
+		bool UpdateFFBSettings(int port, LPDIRECTINPUTDEVICE8 device)
 		{
 			DIPROPDWORD prop { sizeof(prop), sizeof(prop.diph) };
 			prop.diph.dwObj = 0;
 			prop.diph.dwHow = DIPH_DEVICE;
 			prop.dwData = std::clamp(GAINZ[port][0], 0, DI_FFNOMINALMAX);
-			device->SetProperty(DIPROP_FFGAIN, &prop.diph);
+			return SUCCEEDED(device->SetProperty(DIPROP_FFGAIN, &prop.diph));
 		}
 
 		BOOL CALLBACK EnumJoysticksCallback(const DIDEVICEINSTANCE* pdidInstance,
@@ -1019,7 +1019,7 @@ namespace usb_pad
 			return g_pEffectConstant[port]->SetParameters(&eff, DIEP_TYPESPECIFICPARAMS | DIEP_START);
 		}
 
-		void TestForce(int port)
+		bool StartTestForce(int port)
 		{
 			InputMapped im;
 			LPDIRECTINPUTDEVICE8 dev = nullptr;
@@ -1027,23 +1027,36 @@ namespace usb_pad
 				dev = g_pJoysticks[im.index]->GetDevice();
 
 			// Gain value may have changed, so update it for the constant force effect
-			UpdateFFBSettings(port, dev);
-
-			if (FAILED(SetConstantForce(port, DI_FFNOMINALMAX / 3)))
-				return;
-			Sleep(500);
-			SetConstantForce(port, -DI_FFNOMINALMAX / 3);
-			Sleep(1000);
-			SetConstantForce(port, DI_FFNOMINALMAX / 3);
-			Sleep(500);
-			SetConstantForce(port, 0);
-
-			if (dev)
-			{ //FIXME actually center, maybe
-				AutoCenter(dev, true);
-				Sleep(1500);
-				AutoCenter(dev, false);
+			return UpdateFFBSettings(port, dev);
 		}
+
+		bool UpdateTestForce(int port, unsigned int stage)
+		{
+			// FFB test ticks every 500ms and goes as follows:
+			// Turn right, wait 500ms, turn left, wait 1000ms, turn right, wait 500ms, end
+			if (stage == 0)
+			{
+				return SUCCEEDED(SetConstantForce(port, DI_FFNOMINALMAX / 3));
+			}
+			if (stage == 1)
+			{
+				return SUCCEEDED(SetConstantForce(port, -DI_FFNOMINALMAX / 3));
+			}
+			if (stage == 2)
+			{
+				// Do nothing, as we wait 1000ms
+				return true;
+			}
+			if (stage == 3)
+			{
+				return SUCCEEDED(SetConstantForce(port, DI_FFNOMINALMAX / 3));
+			}
+			return false;
+		}
+
+		bool EndTestForce(int port)
+		{
+			return SUCCEEDED(SetConstantForce(port, 0));
 		}
 
 	} // namespace dx

pcsx2/USB/usb-pad/dx/dx.h

@@ -204,13 +204,17 @@ namespace usb_pad
 		float ReadAxis(const InputMapped& im);
 		float ReadAxis(int port, int axisid);
 		float FilterControl(float input, LONG linear, LONG offset, LONG dead);
-		void TestForce(int port);
+
+		bool StartTestForce(int port);
+		bool UpdateTestForce(int port, unsigned int stage);
+		bool EndTestForce(int port);
+
 		LONG GetAxisValueFromOffset(int axis, const DIJOYSTATE2& j);
 		bool GetControl(int port, int id);
 		float GetAxisControl(int port, ControlID id);
 		void CreateFFB(int port, LPDIRECTINPUTDEVICE8 device, DWORD axis);
 		bool FindFFDevice(int port);
-		void UpdateFFBSettings(int port, LPDIRECTINPUTDEVICE8 device);
+		bool UpdateFFBSettings(int port, LPDIRECTINPUTDEVICE8 device);
 
 		void AddInputMap(int port, int cid, const InputMapped& im);
 		void RemoveInputMap(int port, int cid);