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;