[wdmaudiodev] Re: DirectMusic miniport
- From: "Van Mieghem, Dirk" <dvm@xxxxxxxx>
- To: "'wdmaudiodev@xxxxxxxxxxxxx'" <wdmaudiodev@xxxxxxxxxxxxx>
- Date: Sun, 13 Oct 2002 21:20:51 +0200
Hi,
found a way to get DirectMusic with a WDM/KS midi driver going in W2K,
turned out that the sample source code isn't complete. Now if I could find
an application that supports it correctly??? Cubase/Nuendo sometimes use
timestamps in the past, so how is this supposed to work sample accurately?
Is something in the DirectMusic filter chain fiddling with the timestamps?
Dirk
> -----Original Message-----
> From: Van Mieghem, Dirk [mailto:dvm@xxxxxxxx]
> Sent: Wednesday, October 09, 2002 8:18 PM
> To: 'wdmaudiodev@xxxxxxxxxxxxx'
> Subject: [wdmaudiodev] DirectMusic miniport
>
>
>
> Hi all,
> I need to support MIDI devices and opted for a DirectMusic
> miniport driver
> because of the timestamped output and superior timing (I hope
> ;). At first,
> I thought that implementing the necessary interfaces and
> dataranges would be
> enough but it turned out that the system wouldn't recognize
> such a device as
> a DirectMusic one. Actually, it needs a synthesizer node in
> the capture and
> render path, weird for a simple MIDI port. Now it
> works...well sort of,
> KSStudio crashes whenever a pin is instantiated and I don't
> have a clue why.
>
> Sonar can use this device as a legacy MIDI device but
> obviously without
> timestamping. The only hosts that support DirectMusic are
> Cubase SX and
> Nuendo, does anybody know about any others? When using Cubase
> SX on W2K/SP3
> the capture/render streams are opened and then quickly closed
> again. Streams
> are functional on XP though but the timestamps passed in by
> Cubase are a
> mess. MTC is send using an absolute time, slightly in the
> past and regular
> MIDI events seem to use millisecond timestamps???
>
> Did anyone succeed on using DirectMusic on W2K/SP3??? If so, what
> application did you use to verify it?
>
> Thanks,
> Dirk
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