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Added support for the gyro and accelerometer on Steam Controllers

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Fixes https://github.com/libsdl-org/SDL/issues/4577
This commit is contained in:
Sam Lantinga 2021-10-01 21:32:21 -07:00
parent db18764e41
commit 8b74575267
1 changed files with 37 additions and 2 deletions
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39
src/joystick/hidapi/SDL_hidapi_steam.c
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@ -962,6 +962,7 @@ static bool UpdateSteamControllerState( const uint8_t *pData, int nDataSize, Ste
/*****************************************************************************************************/
typedef struct {
SDL_bool report_sensors;
SteamControllerPacketAssembler m_assembler;
SteamControllerStateInternal_t m_state;
SteamControllerStateInternal_t m_last_state;
@ -1026,6 +1027,9 @@ HIDAPI_DriverSteam_OpenJoystick(SDL_HIDAPI_Device *device, SDL_Joystick *joystic
joystick->nbuttons = 17;
joystick->naxes = SDL_CONTROLLER_AXIS_MAX;
SDL_PrivateJoystickAddSensor(joystick, SDL_SENSOR_GYRO, 0.0f);
SDL_PrivateJoystickAddSensor(joystick, SDL_SENSOR_ACCEL, 0.0f);
return SDL_TRUE;
error:
@ -1080,8 +1084,25 @@ HIDAPI_DriverSteam_SendJoystickEffect(SDL_HIDAPI_Device *device, SDL_Joystick *j
static int
HIDAPI_DriverSteam_SetSensorsEnabled(SDL_HIDAPI_Device *device, SDL_Joystick *joystick, SDL_bool enabled)
{
/* You should use the full Steam Input API for sensor support */
return SDL_Unsupported();
SDL_DriverSteam_Context *ctx = (SDL_DriverSteam_Context *)device->context;
unsigned char buf[65];
int nSettings = 0;
memset( buf, 0, 65 );
buf[1] = ID_SET_SETTINGS_VALUES;
if (enabled) {
ADD_SETTING( SETTING_GYRO_MODE, 0x18 /* SETTING_GYRO_SEND_RAW_ACCEL | SETTING_GYRO_MODE_SEND_RAW_GYRO */ );
} else {
ADD_SETTING( SETTING_GYRO_MODE, 0x00 /* SETTING_GYRO_MODE_OFF */ );
}
buf[2] = nSettings*3;
if (SetFeatureReport( device->dev, buf, 3+nSettings*3 ) < 0) {
return SDL_SetError("Couldn't write feature report");
}
ctx->report_sensors = enabled;
return 0;
}
static SDL_bool
@ -1178,6 +1199,20 @@ HIDAPI_DriverSteam_UpdateDevice(SDL_HIDAPI_Device *device)
SDL_PrivateJoystickAxis(joystick, SDL_CONTROLLER_AXIS_RIGHTX, ctx->m_state.sRightPadX);
SDL_PrivateJoystickAxis(joystick, SDL_CONTROLLER_AXIS_RIGHTY, ~ctx->m_state.sRightPadY);
if (ctx->report_sensors) {
float values[3];
values[0] = (ctx->m_state.sGyroX / 32767.0f) * (2000.0f * (M_PI / 180.0f));
values[1] = (ctx->m_state.sGyroZ / 32767.0f) * (2000.0f * (M_PI / 180.0f));
values[2] = (ctx->m_state.sGyroY / 32767.0f) * (2000.0f * (M_PI / 180.0f));
SDL_PrivateJoystickSensor(joystick, SDL_SENSOR_GYRO, values, 3);
values[0] = (ctx->m_state.sAccelX / 32767.0f) * 2.0f * SDL_STANDARD_GRAVITY;
values[1] = (ctx->m_state.sAccelZ / 32767.0f) * 2.0f * SDL_STANDARD_GRAVITY;
values[2] = (-ctx->m_state.sAccelY / 32767.0f) * 2.0f * SDL_STANDARD_GRAVITY;
SDL_PrivateJoystickSensor(joystick, SDL_SENSOR_ACCEL, values, 3);
}
ctx->m_last_state = ctx->m_state;
}