[wdmaudiodev] Queries on Virtual Audio Driver
- From: preeti rubdi <prubdi@xxxxxxxxx>
- To: wdmaudiodev@xxxxxxxxxxxxx
- Date: Wed, 17 Aug 2005 02:41:06 -0700 (PDT)
Hi,
Im new to audio driver developemnt. I have to write a virtual Audio
Driver,which at its lower edge, will stream audio over a wireless transport to
a remote sink.The driver is for Win2000 and WinXP platforms.
I started with the MSVAD(simple) sample in the XP DDK.I have a few queries.
1)Am I right in starting with MSVAD as the base. ie implementing
IMiniportWaveCyclic interface instead of IMiniportWavePci.
2)In the MSVAD sample,SetFormat() indicates nChannels = 2 and wBitsPerSample =
16 ,regardless of the file that is played by the application.Thus the Frame
size is the same for all .wav files of a particular sampling frequency.
Ideally , for an interval of 10 msec,I should get a frame of 640 bytes for a
16khz, 16bit, stereo file and 320bytes for a 16khz, 16bit, mono file? How do i
do this?
Would really appreciate help on this.
Thanks,
Preeti.
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