Function msg_surface_subscribe_ext 

pub fn msg_surface_subscribe_ext(
    surface_id: u16,
    codec_support: u8,
    quality: u8,
) -> Vec<u8> 

Extended surface subscribe with per-surface codec and quality overrides.

codec_support: CODEC_SUPPORT_* bitmask (0 = use connection default). quality: SURFACE_QUALITY_* constant (0 = use server default).