[PD] portaudio compatibility with some ASIO drivers (Windows only)

Hans-Christoph Steiner hans at at.or.at
Wed Jul 1 17:20:21 CEST 2009

I haven't touched portaudio stuff so I don't know what to say there,  
perhaps someone else can say something about that.


On Jul 1, 2009, at 10:21 AM, Stefano Papetti wrote:

> hi Hans-Christoph,
> I found that in the svn version of portaudio (namely in pa_asio.ccp)  
> the driver ReaRoute ASIO is not blacklisted anymore (as committed by  
> Ross Bencina on June 16), so I think that it will be nice to re- 
> compile pd against it. Do you think it's not reliable enough  
> compared to the standard v19?
> Anyway I'll give the nightly builds a try, thanks. That should  
> improve general ASIO performance of already working devices.
> Best,
> S
> Hans-Christoph Steiner ha scritto:
>> Maybe its due to the version of ASIO in use?  I just upgraded the  
>> build farm to use ASIO 2.2, so nightly builds of Pd-extended are  
>> using that.
>> .hc
>> On Jun 30, 2009, at 2:53 PM, Stefano Papetti wrote:
>>> Hello,
>>> I noticed that pd (at least recent versions of both vanilla and  
>>> extended) and other portaudio-based applications (e.g. Audacity)  
>>> don't see some ASIO drivers: namely, the RME Fireface 800 and  
>>> REAPER's ReaRoute ASIO drivers.
>>> I found several posts in different forums around about both  
>>> issues, and I've drawn the following conclusions:
>>> - the RME ASIO driver simply doesn't work, and nobody actually  
>>> knows why... However some people report to get ultra-low latencies  
>>> (3ms) with the MMIO drivers. Moreover, even with the MMIO driver  
>>> they can use the multi-channel capability of the RME only when set  
>>> at 48000 Hz (but this is another story...). I will ask RME  
>>> directly about these issues.
>>> - the ReaRoute ASIO driver is blacklisted by portaudio (as of v19)  
>>> and therefore discarded...
>>> The latter is my most urgent problem because I need to route audio  
>>> from pd to REAPER with the lowest possible latency/cpu load.
>>> Please help!
>>> Thanks,
>>> S
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