Function _look_up_motion_range

endless-tunnel/app/src/main/cpp/input_util.cpp:141–192

}

static void _look_up_motion_range(int deviceId, int source, float* outMinX,
                                  float* outMaxX, float* outMinY,
                                  float* outMaxY) {
  int i;
  for (i = 0; i < _motion_range_cache_items; i++) {
    DeviceMotionRange* item = &_motion_range_cache[i];
    if (item->deviceId == deviceId && item->source == source) {
      *outMinX = item->minX;
      *outMaxX = item->maxX;
      *outMinY = item->minY;
      *outMaxY = item->maxY;
      return;
    }
  }

  DeviceMotionRange* newItem;
  if (_motion_range_cache_items >= MOTION_RANGE_CACHE_MAX) {
    static bool warned = false;
    if (!warned) {
      LOGW(
          "**** Warning: Motion range cache exceeded. This shouldn't normally "
          "happen.");
      warned = true;
    }
    // as an emergency measure, overwrite (arbitrarily) the 1st entry:
    newItem = &_motion_range_cache[i];
  } else {
    // create a new entry
    newItem = &_motion_range_cache[_motion_range_cache_items++];
  }

  LOGD("New device/source pair %d,%d. Querying motion range via JNI.", deviceId,
       source);

  newItem->deviceId = deviceId;
  newItem->source = source;

  LOGD("====Calling _look_up_motion_range() for device %d", deviceId);
#if 0
    /*
     * What this is ?
     */
    BGNActivity_GetDeviceMotionRange(deviceId, source, &(newItem->minX), &(newItem->maxX),
            &(newItem->minY), &(newItem->maxY));
#endif
  LOGD("Motion range for (device %d, source %d) is X:%f-%f, Y:%f-%f", deviceId,
       source, newItem->minX, newItem->maxX, newItem->minY, newItem->maxY);
  *outMinX = newItem->minX;
  *outMaxX = newItem->maxX;
  *outMinY = newItem->minY;
  *outMaxY = newItem->maxY;
}

static bool CookEvent_Joy(AInputEvent* event, CookedEventCallback callback) {
  struct CookedEvent ev;