MIDIInputPortCreate

objc2_core_midi

Function MIDIInputPortCreate 

Source 
pub unsafe extern "C-unwind" fn MIDIInputPortCreate(
    client: MIDIClientRef,
    port_name: &CFString,
    read_proc: MIDIReadProc,
    ref_con: *mut c_void,
    out_port: NonNull<MIDIPortRef>,
) -> i32
👎Deprecated
Available on crate features MIDIServices and objc2-core-foundation only.
Expand description

Creates an input port through which the client may receive incoming MIDI messages from any MIDI source.

Parameter client: The client to own the newly-created port.

Parameter portName: The name of the port.

Parameter readProc: The MIDIReadProc which will be called with incoming MIDI, from sources connected to this port.

Parameter refCon: The refCon passed to readHook.

Parameter outPort: On successful return, points to the newly-created MIDIPort.

Returns: An OSStatus result code.

After creating a port, use MIDIPortConnectSource to establish an input connection from any number of sources to your port.

readProc will be called on a separate high-priority thread owned by CoreMIDI.

§Safety

  • read_proc must be implemented correctly.
  • ref_con must be a valid pointer or null.
  • out_port must be a valid pointer.