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HostCallback_GetBeatAndTempo

When called by the system, provides beat and tempo information to an audio unit from a host application.

Declaration

typealias HostCallback_GetBeatAndTempo = (UnsafeMutableRawPointer?, UnsafeMutablePointer<Float64>?, UnsafeMutablePointer<Float64>?) -> OSStatus

Parameters

  • inHostUserData:

    Custom data that you provided when registering your callback with the audio unit.

  • outCurrentBeat:

    On output, the current beat of the music that is playing.

  • outCurrentTempo:

    On output, the current tempo of the music that is playing.

Discussion

If you named your callback function MyHostCallback_GetBeatAndTempo, you would declare it like this:

See Also

Getting Information from the Host