Re: Creating Aggregate Devices programmatically
Re: Creating Aggregate Devices programmatically
- Subject: Re: Creating Aggregate Devices programmatically
- From: Dave Addey <email@hidden>
- Date: Mon, 01 Aug 2005 23:31:11 +0100
Hi Greg / all,
Not sure I understand. How would I go about doing this? I found that when I
prerolled the device, everything was fine, but stopping and starting
playback (without further prerolling) caused the restart delay mentioned
before. Do I need to deal with the playback myself (i.e. without
audiocontexts) to achieve what Greg describes? Or something else? How
would I do this?
All the best,
Dave.
> From: Greg Chapman <email@hidden>
> Date: Mon, 1 Aug 2005 15:17:03 -0700
> To: CoreAudio API <email@hidden>
> Subject: Re: Creating Aggregate Devices programmatically
>
> QuickTime would be perfectly happy with this solution (start the
> device yourself, way early). As Jeff says, QuickTime has some issues
> with devices that have non-trivial start-up delay, but all of those
> issues should go away if you do this.
>
> Greg
>
> On Aug 1, 2005, at 2:16 PM, Jeff Moore wrote:
>
>> Theoretically, you could do this, presuming you were in charge of
>> how the device is used. Unfortunately, this seems to not be the
>> case since the device is being used in conjunction with a QT
>> AudioContext. As such, QT is in control of when to start and stop
>> the device. As has been shown, QT has a few issues with devices
>> that have non-trivial start-up delay.
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