raw_calc_black_level  201 core/raw.c         int raw_calc_black_level = (v1 + v2 + v3 + v4) / 4;
raw_calc_black_level  202 core/raw.c         if (raw_calc_black_level > CAM_BLACK_LEVEL * 2)
raw_calc_black_level  203 core/raw.c             camera_sensor.black_level = raw_calc_black_level;