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Hosting 'aumi' Midi Effect Audio Units
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Hosting 'aumi' Midi Effect Audio Units

  • Subject: Hosting 'aumi' Midi Effect Audio Units
  • From: Jan Kubny <email@hidden>
  • Date: Tue, 12 Nov 2013 08:56:42 -0600
Hello,

As for OSX 10.9 there is a new Audio Units format "Midi Effect" 'aumi' .

I am working on a super mini AU host and I would like to include the Midi Effects into the single AUGraph.

I am having quiet a problem incorporating the Midi Effects into AUGraph as there is currently no information or any sample code of how the 'aumi' should be constructed as from Audio Unit part and neither how hosts should incorporate the 'aumi' into AUGraph.

Here is my simple graph:

AudioUnitGraph 0x7F1072:

  Member Nodes:

node 1: 'aumi' 'MIFR' 'Aucr', instance 0x807f1073 O  

node 2: 'aumu' 'Clm5' '-NI-', instance 0x830000 O  

node 3: 'auou' 'def ' 'appl', instance 0x807f1074 O  

  Connections:

node   1 bus   0 => node   2 bus   0  [ 2 ch,  44100 Hz, 'lpcm' (0x00000029) 32-bit little-endian float, deinterleaved]

node   2 bus   0 => node   3 bus   0  [ 2 ch,  44100 Hz, 'lpcm' (0x00000029) 32-bit little-endian float, deinterleaved]

  CurrentState:

mLastUpdateError=0, eventsToProcess=F, isRunning=F



There are several issues:


If I incorporate DSLMusicDevice with MidiFX plugin, the AUGraph fails with invalid component.


If I incorporate for Example NI Absynth with MidiFX plugin, AUGraph do not fail, however I am getting buzzing noise instead. 


Anynody has any experience or actually succeeded incorporating a 'aumi' midi effect into AUGraph?


Thanks.




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