pub unsafe extern "C" fn gst_video_content_light_level_add_to_caps(
linfo: *const GstVideoContentLightLevel,
caps: *mut GstCaps,
) -> gboolean
pub unsafe extern "C" fn gst_video_content_light_level_add_to_caps(
linfo: *const GstVideoContentLightLevel,
caps: *mut GstCaps,
) -> gboolean