Mailing Lists: Apple Mailing Lists
Image of Mac OS face in stamp
Re: AUGraph, multiChannelMixer inputs
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: AUGraph, multiChannelMixer inputs



you need to set this before you have the mixer initialised - are you sure the callback here gets called?

On Jun 30, 2009, at 10:27 PM, email@hidden wrote:

thanks for your prompt reply..

does this look correct

int channelCount = 9;
err = AudioUnitSetProperty(mixer, kAudioUnitProperty_ElementCount, kAudioUnitScope_Input, 0, &channelCount, sizeof(channelCount));
NSAssert(err == noErr, @"Error setting property channel count");


when i use this code, i can add a ninth node to my mixer inputs. i get the callback with inBusNumber == 8, which would be the ninth channel. however when i fill its buffer it doesnt get added to the mix. am i missing something else?


On 30/06/2009 7:16am, james mccartney <email@hidden> wrote:
>
>
> Getting the value of kAudioUnitProperty_ElementCount tells you how many elements you have in a scope. This happens to be 8 for this mixer.
> If you want to increase it, you need to set this property.
>
> On Jun 28, 2009, at 4:01 PM, email@hidden wrote:
>
> I came across an interesting error this morning. I have a multi channel mixer with 8 inputs and want to add a 9th. I got a graph initialization failure when i did.
> is there a maximum number of inputs allowed, or does the amount of connections have to be a power of two. What are the limitiations? _______________________________________________
> Do not post admin requests to the list. They will be ignored.
> Coreaudio-api mailing list (email@hidden)
> Help/Unsubscribe/Update your Subscription:
>
> This email sent to email@hidden
>
>
> _______________________________________________
Do not post admin requests to the list. They will be ignored.
Coreaudio-api mailing list (email@hidden)
Help/Unsubscribe/Update your Subscription:

This email sent to email@hidden

_______________________________________________ Do not post admin requests to the list. They will be ignored. Coreaudio-api mailing list (email@hidden) Help/Unsubscribe/Update your Subscription: This email sent to email@hidden


Visit the Apple Store online or at retail locations.
1-800-MY-APPLE

Contact Apple | Terms of Use | Privacy Policy

Copyright © 2011 Apple Inc. All rights reserved.