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Re: AU and Busses (or BusError?)
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Re: AU and Busses (or BusError?)


  • Subject: Re: AU and Busses (or BusError?)
  • From: Robert Grant <email@hidden>
  • Date: Sun, 4 Jan 2004 16:27:04 -0500

Hi Jeremy,

Isn't searching the email archives a pain in the derriere? I've requested the Apple web guys switch to a modern email archive system (something like mamasam would be awesome). They received my request politely but no changes yet. It would be a lovely gift for the next developers conference though :-)

The "pull on the busses to find the bad ones" was a guess - sorry to hear it doesn't work - and it means we're really up a creek. There are more and more AU instruments with multiple output busses so we've got to support them...

I wonder if the validator would detect this?

Robert.


On Jan 4, 2004, at 4:20 PM, Jeremy Sagan wrote:

Robert,

Thanks. I found the original post 'AU output buses' but I cannot find Marc's reply. If the culprit is a parameter named numOutputs that is really numBusses why not change the name?

I have looked in depth into this but I am not using AU graph's. I do not see any error when trying to render on busses greater than 0.

Jeremy

On Sunday, January 4, 2004, at 04:00 PM, Robert Grant wrote:

Hi Jeremy,

I brought this issue up a few weeks ago and there was a bit of discussion but then it went away. The culprit seemed to be identified by Marc (as usual) as the numOutputs parameter to the AUBase constructor. Most people are thinking it is asking for channel count when it's actually asking for bus count. This makes it a bit nasty for us host developers - I guess we can try pulling on the various busses and those that complain should be dropped from the available set? Bit of a pain though...

BTW I think it would be great if Apple reworked the DLS Synth to support multiple output busses (with routable instruments) (not just the dry/wet outputs) - it would make it a lot more useful for users and a good example of multi-out for host developers.

Robert.

On Jan 3, 2004, at 10:55 PM, Jeremy Sagan wrote:

First of all, Happy New Year to all of you on this list and thank you
to the contributors for the wealth of information contained here!

I would just like to query this list about the AU busses. It has come
to my attention that a bunch of plug-ins are setting there output buss
count to 2 and then their stream counts to 2 or more even though
rendering audio on any buss other than buss 0 produces either silence
or noise.

Is there any reason for this? Is this an artifact of the Emagic SDK? Is
there a way that AU Validator can test for this?

Thanks,
Jeremy
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References: 
 >Re: AU and Busses (or BusError?) (From: Jeremy Sagan <email@hidden>)

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