[PD] pd OSX with an emagic 2|6

[Daniel Heckenberg]

I think this is inherent in the USB audio model...
input and output always appear as separate devices and there's no notion of
a single io cycle.

daniel

> -----Original Message-----
> From: Mark Khemma [mailto:mkhemma at orion.it.luc.edu]
> Sent: Friday, 12 July 2002 2:27 PM
> To: shreeswifty
> Cc: PD-LiST
> Subject: Re: [PD] pd OSX with an emagic 2|6
>
>
>
>
> this is what the readme from portaudio says about mac core sound:
>
>
> " Notes on Core Audio Implementation of PortAudio
>
> by Phil Burk and Darren Gibbs
>
> Document last updated March 20, 2002
>
> WHAT WORKS
>
> Output with very low latency, <10 msec.
> Half duplex input or output.
> Full duplex on the same CoreAudio device.
> The paFLoat32, paInt16, paInt8, paUInt8 sample formats.
> Pa_GetCPULoad()
> Pa_StreamTime()
>
> KNOWN BUGS OR LIMITATIONS
>
> We do not yet support simultaneous input and output on different
> devices. Note that some CoreAudio devices like the Roland UH30 look
> like one device but are actually two different CoreAudio devices. The
> BuiltIn audio is typically one CoreAudio device.
>
> Mono doesn't work.
>
> DEVICE MAPPING
>
> CoreAudio devices can support both input and output. But the sample
> rates supported may be different. So we have map one or two PortAudio
> device to each CoreAudio device depending on whether it supports
> input, output or both.
>
> When we query devices, we first get a list of CoreAudio devices. Then
> we scan the list and add a PortAudio device for each CoreAudio device
> that supports input. Then we make a scan for output devices."
>
>
> so it seems for the moment that you can only get half duplex with your 2|6
> on OSX :(
>
> On Thu, 11 Jul 2002, shreeswifty wrote:
>
> > Dear folks
> > i would like to use my emagic 2|6 for audio input but when i
> run pd i get
> >
> > "PortAudio input and output must use same core Audio device"
> >
> > apparently it sees the emagic as default #0 Input and  default #1 output
> >
> > is there a work round for this?
> > cheers~
> >
> > Pat
> >
> >
> >
>
>
>