Re: Render callback disappearing (QT 7.0)
Re: Render callback disappearing (QT 7.0)
- Subject: Re: Render callback disappearing (QT 7.0)
- From: Dominic Feira <email@hidden>
- Date: Tue, 10 May 2005 16:23:57 -0400
I have verified that AudioUnitRender is in fact not returning an
error. The graph functions properly sometimes, yet others it does
not. I did CAShow(myGraph) as you suggested, and the output looks
the same regardless of wether its working or not.
AudioUnitGraph 0x1827334:
Member Nodes:
node 1: desc aufc conv appl, instance 0x870008 O I
node 2: desc aumx smxr appl, instance 0x870009 O I
node 3: desc aufx greq appl, instance 0x87000A O I
node 4: desc aufc conv appl, instance 0x87000B O I
Connections:
node 1 bus 0 => node 2 bus 0
node 2 bus 0 => node 3 bus 0
node 3 bus 0 => node 4 bus 0
Events to be updated:
CurrentState:
mLastUpdateError=0, eventsToProcess=F, isRunning=F
As I mentioned in my first (more lengthy) e-mail, this graph is being
used as an offline renderer and the callbacks at the leafs of the
graph can lock. Perhaps the locking is causing a problem.
Dominic Feira / Code Monkey / Ambrosia Software, Inc.
On May 10, 2005, at 3:24 PM, William Stewart wrote:
Are you sure your graph is all wired up? (Try CAShow(myGraph)
Are you sure you are getting noErr result from AudioUnitRender?
Bill
On 10/05/2005, at 10:19 AM, Dominic Feira wrote:
Hello. I'll keep this short. Last time everybody's eyes probably
glazed over.
What can cause a Render callback on an audio unit to not be
called? Notably, the render callback is called one or two times,
but then is called no longer, even though I know AudioUnitRender
is being called on the graph. This is only happening on systems
with Quicktime 7.0. Systems with 6.5.x are not affected. No
errors are reported during setup of the graph or when calling
AudioUnitRender.
Thanks.
Dominic Feira / Code Monkey / Ambrosia Software, Inc.
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