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Re: MusicSequenceSetMIDIEndpoint Question
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Re: MusicSequenceSetMIDIEndpoint Question


  • Subject: Re: MusicSequenceSetMIDIEndpoint Question
  • From: William Stewart <email@hidden>
  • Date: Tue, 17 Feb 2004 12:57:06 -0800

On 17/02/2004, at 4:48 AM, Peter Zegelin wrote:

I'm using the MusicPlayer API to play midi files and have a question about changing the audio destination. Note that I am not using any AUGraph functions - just the default. I have an external device that I can detect with MIDIGetNumberOfDestinations and MIDIGetDestination. When my player first starts up the midi sequence plays through the built in synthesizer and I can change to the external device using MusicSequenceSetMIDIEndpoint however I can't see a way to change the destination back to the internal synthesizer. So could someone kindly tell me:

How do you change the destination back to the internal sythesizer?

You have to have the sequence play to a graph (the sequence creates a default graph with a MusicDevice AU in it (the DLS synth))... So, if you set it to an endpoint, you'd have to reset it to a graph with a dls synth.

I have found that to change the destination to the external device while the sequence is playing, I have to Stop the MusicPlayer, set the endpoint with MusicSequenceSetMIDIEndpoint, call MusicPlayerPreroll and then start the Player again. Is this the correct way to do it?

Yes


On a related note is there any particular reason why the internal synthesizer isn't counted in MIDIGetNumberOfDestinations? I get 1 (for the external device) but I would have thought it would be 2 (external and internal).

Its an Audio Unit, not a MIDI Endpoint

Bill


thanks for any help!

Peter
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 >MusicSequenceSetMIDIEndpoint Question (From: Peter Zegelin <email@hidden>)

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