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Add gamepad mouse emulation support

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This commit is contained in:
Cameron Gutman 2019-05-19 12:17:23 -07:00
commit fc8d5d5799
2 changed files with 126 additions and 0 deletions
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120
app/streaming/input.cpp
View file

@ -28,6 +28,18 @@
// How far the finger can move before it cancels a drag or tap
#define DEAD_ZONE_DELTA 0.1f
// How long the Start button must be pressed to toggle mouse emulation
#define MOUSE_EMULATION_LONG_PRESS_TIME 750
// How long between polling the gamepad to send virtual mouse input
#define MOUSE_EMULATION_POLLING_INTERVAL 50
// Determines how fast the mouse will move each interval
#define MOUSE_EMULATION_MOTION_MULTIPLIER 6
// Determines the maximum motion amount before allowing movement
#define MOUSE_EMULATION_DEADZONE 3
const int SdlInputHandler::k_ButtonMap[] = {
A_FLAG, B_FLAG, X_FLAG, Y_FLAG,
BACK_FLAG, SPECIAL_FLAG, PLAY_FLAG,
@ -115,6 +127,7 @@ SdlInputHandler::SdlInputHandler(StreamingPreferences& prefs, NvComputer*, int s
SdlInputHandler::~SdlInputHandler()
{
for (int i = 0; i < MAX_GAMEPADS; i++) {
SDL_RemoveTimer(m_GamepadState[i].mouseEmulationTimer);
if (m_GamepadState[i].haptic != nullptr) {
SDL_HapticClose(m_GamepadState[i].haptic);
}
@ -658,6 +671,45 @@ Uint32 SdlInputHandler::mouseMoveTimerCallback(Uint32 interval, void *param)
return interval;
}
Uint32 SdlInputHandler::mouseEmulationTimerCallback(Uint32 interval, void *param)
{
auto gamepad = reinterpret_cast<GamepadState*>(param);
short rawX;
short rawY;
// Determine which analog stick is currently receiving the strongest input
if ((uint32_t)qAbs(gamepad->lsX) + qAbs(gamepad->lsY) > (uint32_t)qAbs(gamepad->rsX) + qAbs(gamepad->rsY)) {
rawX = gamepad->lsX;
rawY = -gamepad->lsY;
}
else {
rawX = gamepad->rsX;
rawY = -gamepad->rsY;
}
float deltaX;
float deltaY;
// Produce a base vector for mouse movement
deltaX = rawX / 32766.0f * MOUSE_EMULATION_MOTION_MULTIPLIER;
deltaY = rawY / 32766.0f * MOUSE_EMULATION_MOTION_MULTIPLIER;
// Move faster as the stick moves further from center
deltaX *= qAbs(deltaX);
deltaY *= qAbs(deltaY);
// Enforce deadzones
deltaX = qAbs(deltaX) > MOUSE_EMULATION_DEADZONE ? deltaX - MOUSE_EMULATION_DEADZONE : 0;
deltaY = qAbs(deltaY) > MOUSE_EMULATION_DEADZONE ? deltaY - MOUSE_EMULATION_DEADZONE : 0;
if (deltaX != 0 || deltaY != 0) {
LiSendMouseMoveEvent((short)deltaX, (short)deltaY);
}
return interval;
}
void SdlInputHandler::handleControllerAxisEvent(SDL_ControllerAxisEvent* event)
{
SDL_JoystickID gameControllerId = event->which;
@ -726,6 +778,73 @@ void SdlInputHandler::handleControllerButtonEvent(SDL_ControllerButtonEvent* eve
return;
}
if (event->state == SDL_PRESSED) {
if (event->button == SDL_CONTROLLER_BUTTON_START) {
state->lastStartDownTime = SDL_GetTicks();
}
else if (state->mouseEmulationTimer != 0) {
if (event->button == SDL_CONTROLLER_BUTTON_A) {
LiSendMouseButtonEvent(BUTTON_ACTION_PRESS, BUTTON_LEFT);
}
else if (event->button == SDL_CONTROLLER_BUTTON_B) {
LiSendMouseButtonEvent(BUTTON_ACTION_PRESS, BUTTON_RIGHT);
}
else if (event->button == SDL_CONTROLLER_BUTTON_X) {
LiSendMouseButtonEvent(BUTTON_ACTION_PRESS, BUTTON_MIDDLE);
}
else if (event->button == SDL_CONTROLLER_BUTTON_LEFTSHOULDER) {
LiSendMouseButtonEvent(BUTTON_ACTION_PRESS, BUTTON_X1);
}
else if (event->button == SDL_CONTROLLER_BUTTON_RIGHTSHOULDER) {
LiSendMouseButtonEvent(BUTTON_ACTION_PRESS, BUTTON_X2);
}
else if (event->button == SDL_CONTROLLER_BUTTON_DPAD_UP) {
LiSendScrollEvent(1);
}
else if (event->button == SDL_CONTROLLER_BUTTON_DPAD_DOWN) {
LiSendScrollEvent(-1);
}
return;
}
}
else {
if (event->button == SDL_CONTROLLER_BUTTON_START) {
if (SDL_GetTicks() - state->lastStartDownTime > MOUSE_EMULATION_LONG_PRESS_TIME) {
if (state->mouseEmulationTimer != 0) {
SDL_RemoveTimer(state->mouseEmulationTimer);
state->mouseEmulationTimer = 0;
SDL_LogInfo(SDL_LOG_CATEGORY_APPLICATION,
"Mouse emulation deactivated");
}
else {
state->mouseEmulationTimer = SDL_AddTimer(MOUSE_EMULATION_POLLING_INTERVAL, SdlInputHandler::mouseEmulationTimerCallback, state);
SDL_LogInfo(SDL_LOG_CATEGORY_APPLICATION,
"Mouse emulation active");
}
}
}
else if (state->mouseEmulationTimer != 0) {
if (event->button == SDL_CONTROLLER_BUTTON_A) {
LiSendMouseButtonEvent(BUTTON_ACTION_RELEASE, BUTTON_LEFT);
}
else if (event->button == SDL_CONTROLLER_BUTTON_B) {
LiSendMouseButtonEvent(BUTTON_ACTION_RELEASE, BUTTON_RIGHT);
}
else if (event->button == SDL_CONTROLLER_BUTTON_X) {
LiSendMouseButtonEvent(BUTTON_ACTION_RELEASE, BUTTON_MIDDLE);
}
else if (event->button == SDL_CONTROLLER_BUTTON_LEFTSHOULDER) {
LiSendMouseButtonEvent(BUTTON_ACTION_RELEASE, BUTTON_X1);
}
else if (event->button == SDL_CONTROLLER_BUTTON_RIGHTSHOULDER) {
LiSendMouseButtonEvent(BUTTON_ACTION_RELEASE, BUTTON_X2);
}
return;
}
}
if (event->state == SDL_PRESSED) {
state->buttons |= k_ButtonMap[event->button];
}
@ -855,6 +974,7 @@ void SdlInputHandler::handleControllerDeviceEvent(SDL_ControllerDeviceEvent* eve
else if (event->type == SDL_CONTROLLERDEVICEREMOVED) {
state = findStateForGamepad(event->which);
if (state != NULL) {
SDL_RemoveTimer(state->mouseEmulationTimer);
SDL_GameControllerClose(state->controller);
if (state->haptic != nullptr) {
SDL_HapticClose(state->haptic);

6
app/streaming/input.h
View file

@ -13,6 +13,9 @@ struct GamepadState {
int hapticEffectId;
short index;
SDL_TimerID mouseEmulationTimer;
uint32_t lastStartDownTime;
short buttons;
short lsX, lsY;
short rsX, rsY;
@ -82,6 +85,9 @@ private:
static
Uint32 mouseMoveTimerCallback(Uint32 interval, void* param);
static
Uint32 mouseEmulationTimerCallback(Uint32 interval, void* param);
bool m_MultiController;
SDL_TimerID m_MouseMoveTimer;
SDL_atomic_t m_MouseDeltaX;