Kaba class AudioInput ed

class AudioInput extends Module
    var name: string
    var out_changed: source
    var out_play_end_of_stream: source
    var out_read_end_of_stream: source
    var out_state_changed: source
    var out_tick: source
    var output: OutPort
    var port_out: OutPort&[]
    var session: Session&

    # constructors
    func mut __init__(session: Session)

    # functions
    func is_capturing() -> bool
    func sample_rate() -> i32
    func samples_recorded() -> i32
    func mut start() -> bool
    func mut stop()