[wdmaudiodev] Wave-sink for Kernel-mode Software Synthesizer fails to function in Vista.
- From: "Ellwe Loh" <elweloh@xxxxxxxxxxx>
- To: wdmaudiodev@xxxxxxxxxxxxx
- Date: Tue, 28 Feb 2006 11:42:21 +0800
Hi,
I'm implementing a Kernel-Mode Software Synthesizer which exposes an
ISynthSinkDMus interface to the DMUS port driver. After setting the the
neccessary interfaces (similar to that of ddksynth sample), there's no audio
output.
When i start to play a MIDI file, IMiniportDMus::NewStream method of
streamtype "DMUS_STREAM__MIDI_RENDER" was called for a stream object to be
created for the input pin, but IMiniportDMus::NewStream of streamtype
"DMUS_STREAM_WAVE_SINK" was not called. Thus, only MIDI messages get fed
into the input pin, but the ISynthSinkDMus::Render method doesn't get
called.
I've tested with the ddksynth sample and encounter similar behaviour.
Is the DMUS wave-sink mechanism still prevail in Vista? Or Is there
something else that I need to handle for this wave-sink mechanism to work
under Vista?
Thanks.
Ellwe
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