Re: kAudioUnitProperty_PresentationLatency supported in LogicPro 7.2 and/or 8?
Re: kAudioUnitProperty_PresentationLatency supported in LogicPro 7.2 and/or 8?
- Subject: Re: kAudioUnitProperty_PresentationLatency supported in LogicPro 7.2 and/or 8?
- From: "I. K." <email@hidden>
- Date: Mon, 12 Nov 2007 20:32:20 -0600
The project I am working on requires acurate host time stamps of
events. These will be made OSC bundles and sent thru udp to control
OSC aware applications; SuperCollider3 among them.
So far, I have thought of using a digital audio track to send a one
sample impulse on transport play. The OSC server application
calculates a host time offset from the time it receives this impulse.
I dont like that. its hacky.
It would be great if the OSC Bundle was built with the correct timing
information from the start - in the AU.
any sugestions are welcome.
Thanks for your help Bill.
On 11/12/07, William Stewart <email@hidden> wrote:
> This is on our to do list for AULab, but not yet done. I don't know of
> Logic's plans in this area. You are the first to really ask for this,
> so perhaps there is enough reason now to look at supporting this
> property.
>
> Bill
>
> On Nov 12, 2007, at 5:37 PM, I. K. wrote:
>
> > I searched the archives and found only a couple of references regards
> > this without much more info than the documentation provided in the
> > header.
> >
> > I have tested on several hosts and none seems to have it implemented
> > including AULab.
> >
> > Perhaps AudioUnitProperties.h misses to mention its only applicable to
> > output AudioUnits?
> >
> > As a workaround, is there a way for an AU to get a reference to the
> > AUGraph it is connected to?
> > This way I could iterate thru the graph collecting latencies and
> > calculate a persentation latency for mine - based on buffersize, out
> > device safety buffer size, latency etc...
> >
> > is there any other way?
> >
> > tia,
> > I.
> >
> >
> > On 11/8/07, I. K. <email@hidden> wrote:
> >> Hello all,
> >> Does anyone know if kAudioUnitProperty_PresentationLatency is
> >> supported in Logic Pro 7.2 and/or Logic Pro 8?
> >>
> >> I would appreciate any hints if this property is not supported.
> >> I am coding an AU Instrument so it is only the output presentation
> >> latency I am interested in.
> >>
> >> tia,
> >>
> >> I.
> >>
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