[PD] ASIO for win NT/2K
mpuckett at man104-1.ucsd.edu
Wed Feb 20 03:02:18 CET 2002
Fabulous! I tried something like this a while ago, but never got there.
It's news to me that ASIO has MIDI support... if they do I'm sure that's
better than the "mm" version too.
I was hoping to make ASIO and MM run-time switchable; if you throw me the
sources I'll be happy to work that in (although perhaps not elegantly).
On Tue, Feb 19, 2002 at 06:24:46PM -0500, Michael Casey wrote:
> I compiled an ASIO version of PD using PortAudio v1.7 with the beta ASIO
> drivers and Steinberg's ASIO 2.0 SDK. The program compiled successfully
> using s_mac.c and s_portaudio.c with MSVC++ 6.0.
> Both audio input and output are working as tested on a DIGIGRAM VxPocket
> v2.0 PCMCIA audio card running on a Sony Vaio under win2k with the latest
> driver package from Digigram (v4.4c). I tested it with a microphone and
> monitor speakers.
> The software reports 12ms latency for each device: i.e. 24ms I/O latency.
> This corresponds with what I heard and is a significant improvement over
> the ~350ms latency reported when using the Microsoft Wave or DirectX
> Here's the PortAudio startup report:
> MIDI: not yet implemented
> PaASIO_QueryDeviceInfo: numDrivers = 1
> PaASIO_QueryDeviceInfo: InputChannels = 2
> PaASIO_QueryDeviceInfo: OutputChannels = 2
> PortAudio : possible sample rate = 32000
> PortAudio : possible sample rate = 44100
> PortAudio : possible sample rate = 48000
> PortAudio : minSize = 504
> PortAudio : preferredSize = 512
> PortAudio : maxSize = 2016
> PortAudio : granularity = 126
> PortAudio : User buffer size = 128
> PortAudio : ASIO buffer size = 512
> PortAudio : Minimum BufferOffset for Output = 0
> PortAudio : ASIOCreateBuffers with size = 512
> PortAudio : InputLatency = 572 latency = 12 msec
> PortAudio : OuputLatency = 572 latency = 12 msec
> To do: create a new file called s_nt_asio.c that includes the NT MIDI
> interfaces as well as the PortAudio calls from s_mac.c. Has someone done
> this already ? If not, I'll try and make it.
> Best regards,
> Mike Casey
> ----- Original Message -----
> From: "Miller Puckette" <mpuckett at man104-1.ucsd.edu>
> To: "mark" <mark at junklight.com>
> Cc: "Matthew Nish-Lapidus" <mattn-l at rogers.com>; "PD List"
> <pd-list at iem.kug.ac.at>
> Sent: Sunday, January 27, 2002 6:09 PM
> Subject: Re: [PD] ASIO drivers in windows
> > Hi all,
> > There's a Pd "portaudio" interface (in s_mac.c and s_portaudio.c), and
> > portaudio supports ASIO in "beta"... see
> > http://www.portaudio.com/
> > So in principle you can get Pd to talk to ASIO by just linking it all
> > toghether. I haven't tried this because I don't have any soundcards in my
> > Windows machine that support ASIO.
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