Function SDL_GetDriverAndSensorIndex

deps/SDL2/src/sensor/SDL_sensor.c:121–141

* Get the driver and device index for an API device index * This should be called while the sensor lock is held, to prevent another thread from updating the list */

 * This should be called while the sensor lock is held, to prevent another thread from updating the list
 */
static SDL_bool
SDL_GetDriverAndSensorIndex(int device_index, SDL_SensorDriver **driver, int *driver_index)
{
    int i, num_sensors, total_sensors = 0;

    if (device_index >= 0) {
        for (i = 0; i < SDL_arraysize(SDL_sensor_drivers); ++i) {
            num_sensors = SDL_sensor_drivers[i]->GetCount();
            if (device_index < num_sensors) {
                *driver = SDL_sensor_drivers[i];
                *driver_index = device_index;
                return SDL_TRUE;
            }
            device_index -= num_sensors;
            total_sensors += num_sensors;
        }
    }

    SDL_SetError("There are %d sensors available", total_sensors);
    return SDL_FALSE;
}

/*
 * Get the implementation dependent name of a sensor