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Re: What Are AudioUnits?
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Re: What Are AudioUnits?


  • Subject: Re: What Are AudioUnits?
  • From: Daniel Todd Currie <email@hidden>
  • Date: Fri, 8 Oct 2004 14:48:39 +0900

Is there a list of component types somewhere? My app is not so much an effect as it is an analyzer. Should I still be using 'aufx'?

-- DTC


On 2004 Oct 08, at 03:17, William Stewart wrote:

In the CoreAudio SDK have a look at the SampleEffectUnit - that creates a
simple AU (of type aufx as Philippe described) and you can then install the
bundle in (/ or ~/) Library/Audio/Plug Ins/Components - then it will be
found by the validator using:
auval -s aufx


Bill

On 6/10/04 10:40 PM, "Daniel Todd Currie" <email@hidden> wrote:

tech note 2091 says to do this:

    Component comp;
    ComponentDescription desc;

    desc.componentType = kAudioUnitType_Output;
    desc.componentSubType = kAudioUnitSubType_HALOutput;
    desc.componentManufacturer = kAudioUnitManufacturer_Apple;
    desc.componentFlags = 0;
    desc.componentFlagsMask = 0;

    comp = FindNextComponent(NULL, &desc);
    if (comp == NULL) exit (-1);

OpenAComponent(comp, &InputUnit);

This grabs the Apple: AudioDeviceOutput component, but if I am trying to list my own AU in the AUValidation, I assume I need to make my own component? I don't see anything anywhere about making new components. For that matter, an Xcode search of all frameworks for the "FindNextComponent" or "OpenAComponent" functions returns nothing.

I think if I can figure out how to test my AU in the AUValidator, I
will be better able to resolve some of these questions about how AUs
work.

I've poked around in some of the AU examples in "/Developer/Examples",
but sweet christ some of those projects are over 10,000 lines of code,
surely there must be some less complex examples?

-- DTC

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