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Re: MIDIEntityAddOrRemoveEndpoints

Hi Arne,

On Dec 13, 2004, at 9:58 AM, Arne Scheffler wrote:

Hi,
what does MIDIEntityAddOrRemoveEndpoints do ? The documentation in the header and in the html file are wrong.
And I would like to know if it is possible to setup CoreMIDI with the CoreMIDI API like the Audio/Midi Setup App ?

The documentation I have says:

>>>>>>>>>>
// -----------------------------------------------------------------------------
/*!
@function MIDIEntityAddOrRemoveEndpoints

@discussion Drivers may call this function to add to or remove an
entity's endpoints.


New for CoreMIDI 1.3.


@param device
The device from which an entity is to be removed.
@param entity
The entity to be removed.
@result An OSStatus result code.
*/
extern OSStatus
MIDIEntityAddOrRemoveEndpoints(MIDIEntityRef entity, ItemCount numSourceEndpoints,
ItemCount numDestinationEndpoints)
<<<<<<<<<<

The docs are correct. What may be unclear is that you're supposed to pass in the desired number of source/destination endpoints you want it to have on outcome (not delta values). So if you want your entity to have 2 endpoints in and 4 out, call it with MIDIEntityAddOrRemoveEndpoints (entity, 2, 4).

This is the API that Audio MIDI Setup uses to reconfigure external MIDI devices, so you can do this sort of configuration just as AMS can.

Best,
Luke

cheers
arne

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 >MIDIEntityAddOrRemoveEndpoints (From: Arne Scheffler <email@hidden>)



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