void WindowsGamepadService::CheckXInputChanges(Gamepad& gamepad,
XINPUT_STATE& state) {
// Handle digital buttons first
for (size_t b = 0; b < kNumMappings; b++) {
if (state.Gamepad.wButtons & kXIButtonMap[b].button &&
!(gamepad.state.Gamepad.wButtons & kXIButtonMap[b].button)) {
// Button pressed
NewButtonEvent(gamepad.id, kXIButtonMap[b].mapped, true);
} else if (!(state.Gamepad.wButtons & kXIButtonMap[b].button) &&
gamepad.state.Gamepad.wButtons & kXIButtonMap[b].button) {
// Button released
NewButtonEvent(gamepad.id, kXIButtonMap[b].mapped, false);
}
}
// Then triggers
if (state.Gamepad.bLeftTrigger != gamepad.state.Gamepad.bLeftTrigger) {
bool pressed =
state.Gamepad.bLeftTrigger >= XINPUT_GAMEPAD_TRIGGER_THRESHOLD;
NewButtonEvent(gamepad.id, kButtonLeftTrigger,
pressed, state.Gamepad.bLeftTrigger / 255.0);
}
if (state.Gamepad.bRightTrigger != gamepad.state.Gamepad.bRightTrigger) {
bool pressed =
state.Gamepad.bRightTrigger >= XINPUT_GAMEPAD_TRIGGER_THRESHOLD;
NewButtonEvent(gamepad.id, kButtonRightTrigger,
pressed, state.Gamepad.bRightTrigger / 255.0);
}
// Finally deal with analog sticks
// TODO: bug 1001955 - Support deadzones.
if (state.Gamepad.sThumbLX != gamepad.state.Gamepad.sThumbLX) {
NewAxisMoveEvent(gamepad.id, kLeftStickXAxis,
state.Gamepad.sThumbLX / 32767.0);
}
if (state.Gamepad.sThumbLY != gamepad.state.Gamepad.sThumbLY) {
NewAxisMoveEvent(gamepad.id, kLeftStickYAxis,
-1.0 * state.Gamepad.sThumbLY / 32767.0);
}
if (state.Gamepad.sThumbRX != gamepad.state.Gamepad.sThumbRX) {
NewAxisMoveEvent(gamepad.id, kRightStickXAxis,
state.Gamepad.sThumbRX / 32767.0);
}
if (state.Gamepad.sThumbRY != gamepad.state.Gamepad.sThumbRY) {
NewAxisMoveEvent(gamepad.id, kRightStickYAxis,
-1.0 * state.Gamepad.sThumbRY / 32767.0);
}
gamepad.state = state;
}
void
GamepadService::Update(const GamepadChangeEvent& aEvent)
{
if (aEvent.type() == GamepadChangeEvent::TGamepadAdded) {
const GamepadAdded& a = aEvent.get_GamepadAdded();
AddGamepad(a.index(), a.id(),
static_cast<GamepadMappingType>(a.mapping()),
a.num_buttons(), a.num_axes());
} else if (aEvent.type() == GamepadChangeEvent::TGamepadRemoved) {
const GamepadRemoved& a = aEvent.get_GamepadRemoved();
RemoveGamepad(a.index());
} else if (aEvent.type() == GamepadChangeEvent::TGamepadButtonInformation) {
const GamepadButtonInformation& a = aEvent.get_GamepadButtonInformation();
NewButtonEvent(a.index(), a.button(), a.pressed(), a.value());
} else if (aEvent.type() == GamepadChangeEvent::TGamepadAxisInformation) {
const GamepadAxisInformation& a = aEvent.get_GamepadAxisInformation();
NewAxisMoveEvent(a.index(), a.axis(), a.value());
} else {
MOZ_CRASH("We shouldn't be here!");
}
}
bool
WindowsGamepadService::HandleRawInput(HRAWINPUT handle)
{
if (!mHID) {
return false;
}
// First, get data from the handle
UINT size;
GetRawInputData(handle, RID_INPUT, nullptr, &size, sizeof(RAWINPUTHEADER));
nsTArray<uint8_t> data(size);
data.SetLength(size);
if (GetRawInputData(handle, RID_INPUT, data.Elements(), &size,
sizeof(RAWINPUTHEADER)) == kRawInputError) {
return false;
}
PRAWINPUT raw = reinterpret_cast<PRAWINPUT>(data.Elements());
Gamepad* gamepad = nullptr;
for (unsigned i = 0; i < mGamepads.Length(); i++) {
if (mGamepads[i].type == kRawInputGamepad
&& mGamepads[i].handle == raw->header.hDevice) {
gamepad = &mGamepads[i];
break;
}
}
if (gamepad == nullptr) {
return false;
}
// Second, get the preparsed data
nsTArray<uint8_t> parsedbytes;
if (!GetPreparsedData(raw->header.hDevice, parsedbytes)) {
return false;
}
PHIDP_PREPARSED_DATA parsed =
reinterpret_cast<PHIDP_PREPARSED_DATA>(parsedbytes.Elements());
// Get all the pressed buttons.
nsTArray<USAGE> usages(gamepad->numButtons);
usages.SetLength(gamepad->numButtons);
ULONG usageLength = gamepad->numButtons;
if (mHID.mHidP_GetUsages(HidP_Input, kButtonUsagePage, 0, usages.Elements(),
&usageLength, parsed, (PCHAR)raw->data.hid.bRawData,
raw->data.hid.dwSizeHid) != HIDP_STATUS_SUCCESS) {
return false;
}
bool buttons[kMaxButtons] = { false };
usageLength = std::min<ULONG>(usageLength, kMaxButtons);
for (unsigned i = 0; i < usageLength; i++) {
buttons[usages[i] - 1] = true;
}
if (gamepad->hasDpad) {
// Get d-pad position as 4 buttons.
ULONG value;
if (mHID.mHidP_GetUsageValue(HidP_Input, gamepad->dpadCaps.UsagePage, 0, gamepad->dpadCaps.Range.UsageMin, &value, parsed, (PCHAR)raw->data.hid.bRawData, raw->data.hid.dwSizeHid) == HIDP_STATUS_SUCCESS) {
UnpackDpad(static_cast<LONG>(value), gamepad, buttons);
}
}
for (unsigned i = 0; i < gamepad->numButtons; i++) {
if (gamepad->buttons[i] != buttons[i]) {
NewButtonEvent(gamepad->id, i, buttons[i]);
gamepad->buttons[i] = buttons[i];
}
}
// Get all axis values.
for (unsigned i = 0; i < gamepad->numAxes; i++) {
double new_value;
if (gamepad->axes[i].caps.LogicalMin < 0) {
LONG value;
if (mHID.mHidP_GetScaledUsageValue(HidP_Input, gamepad->axes[i].caps.UsagePage,
0, gamepad->axes[i].caps.Range.UsageMin,
&value, parsed,
(PCHAR)raw->data.hid.bRawData,
raw->data.hid.dwSizeHid)
!= HIDP_STATUS_SUCCESS) {
continue;
}
new_value = ScaleAxis(value, gamepad->axes[i].caps.LogicalMin,
gamepad->axes[i].caps.LogicalMax);
}
else {
ULONG value;
if (mHID.mHidP_GetUsageValue(HidP_Input, gamepad->axes[i].caps.UsagePage, 0,
gamepad->axes[i].caps.Range.UsageMin, &value,
parsed, (PCHAR)raw->data.hid.bRawData,
raw->data.hid.dwSizeHid) != HIDP_STATUS_SUCCESS) {
continue;
}
new_value = ScaleAxis(value, gamepad->axes[i].caps.LogicalMin,
gamepad->axes[i].caps.LogicalMax);
}
if (gamepad->axes[i].value != new_value) {
NewAxisMoveEvent(gamepad->id, i, new_value);
gamepad->axes[i].value = new_value;
}
}
return true;
}
