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SDL - added new SDL_JoystickCurrentPowerLevel() API that returns the battery level of the selected joystick. Currently only implemented for XInput devices, other platforms are a TODO.

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CR: Sam
This commit is contained in:
Sam Lantinga 2015-09-30 15:39:30 -07:00
parent 8038b8bb7f
commit bf785c766b
7 changed files with 127 additions and 8 deletions
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50
src/joystick/windows/SDL_xinputjoystick.c
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@ -221,8 +221,39 @@ SDL_XINPUT_JoystickOpen(SDL_Joystick * joystick, JoyStick_DeviceData *joystickde
return 0;
}
static void
UpdateXInputJoystickBatteryInformation(SDL_Joystick * joystick, XINPUT_BATTERY_INFORMATION *pBatteryInformation)
{
if ( pBatteryInformation->BatteryType != BATTERY_TYPE_UNKNOWN )
{
SDL_JoystickPowerLevel ePowerLevel = SDL_JOYSTICK_POWER_UNKNOWN;
if (pBatteryInformation->BatteryType == BATTERY_TYPE_WIRED) {
ePowerLevel = SDL_JOYSTICK_POWER_WIRED;
} else {
switch ( pBatteryInformation->BatteryLevel )
{
case BATTERY_LEVEL_EMPTY:
ePowerLevel = SDL_JOYSTICK_POWER_EMPTY;
break;
case BATTERY_LEVEL_LOW:
ePowerLevel = SDL_JOYSTICK_POWER_LOW;
break;
case BATTERY_LEVEL_MEDIUM:
ePowerLevel = SDL_JOYSTICK_POWER_MEDIUM;
break;
default:
case BATTERY_LEVEL_FULL:
ePowerLevel = SDL_JOYSTICK_POWER_FULL;
break;
}
}
SDL_PrivateJoystickBatteryLevel( joystick, ePowerLevel );
}
}
static void
UpdateXInputJoystickState_OLD(SDL_Joystick * joystick, XINPUT_STATE_EX *pXInputState)
UpdateXInputJoystickState_OLD(SDL_Joystick * joystick, XINPUT_STATE_EX *pXInputState, XINPUT_BATTERY_INFORMATION *pBatteryInformation)
{
static WORD s_XInputButtons[] = {
XINPUT_GAMEPAD_DPAD_UP, XINPUT_GAMEPAD_DPAD_DOWN, XINPUT_GAMEPAD_DPAD_LEFT, XINPUT_GAMEPAD_DPAD_RIGHT,
@ -244,10 +275,12 @@ UpdateXInputJoystickState_OLD(SDL_Joystick * joystick, XINPUT_STATE_EX *pXInputS
for (button = 0; button < SDL_arraysize(s_XInputButtons); ++button) {
SDL_PrivateJoystickButton(joystick, button, (wButtons & s_XInputButtons[button]) ? SDL_PRESSED : SDL_RELEASED);
}
UpdateXInputJoystickBatteryInformation( joystick, pBatteryInformation );
}
static void
UpdateXInputJoystickState(SDL_Joystick * joystick, XINPUT_STATE_EX *pXInputState)
UpdateXInputJoystickState(SDL_Joystick * joystick, XINPUT_STATE_EX *pXInputState, XINPUT_BATTERY_INFORMATION *pBatteryInformation)
{
static WORD s_XInputButtons[] = {
XINPUT_GAMEPAD_A, XINPUT_GAMEPAD_B, XINPUT_GAMEPAD_X, XINPUT_GAMEPAD_Y,
@ -283,6 +316,8 @@ UpdateXInputJoystickState(SDL_Joystick * joystick, XINPUT_STATE_EX *pXInputState
hat |= SDL_HAT_RIGHT;
}
SDL_PrivateJoystickHat(joystick, 0, hat);
UpdateXInputJoystickBatteryInformation( joystick, pBatteryInformation );
}
void
@ -290,6 +325,7 @@ SDL_XINPUT_JoystickUpdate(SDL_Joystick * joystick)
{
HRESULT result;
XINPUT_STATE_EX XInputState;
XINPUT_BATTERY_INFORMATION XBatteryInformation;
if (!XINPUTGETSTATE)
return;
@ -301,12 +337,18 @@ SDL_XINPUT_JoystickUpdate(SDL_Joystick * joystick)
return;
}
SDL_zero( XBatteryInformation );
if ( XINPUTGETBATTERYINFORMATION )
{
result = XINPUTGETBATTERYINFORMATION( joystick->hwdata->userid, BATTERY_DEVTYPE_GAMEPAD, &XBatteryInformation );
}
/* only fire events if the data changed from last time */
if (XInputState.dwPacketNumber && XInputState.dwPacketNumber != joystick->hwdata->dwPacketNumber) {
if (SDL_XInputUseOldJoystickMapping()) {
UpdateXInputJoystickState_OLD(joystick, &XInputState);
UpdateXInputJoystickState_OLD(joystick, &XInputState, &XBatteryInformation);
} else {
UpdateXInputJoystickState(joystick, &XInputState);
UpdateXInputJoystickState(joystick, &XInputState, &XBatteryInformation);
}
joystick->hwdata->dwPacketNumber = XInputState.dwPacketNumber;
}