[wdmaudiodev] Re: KSPROPERTY_STEPPING_LONG problem!
- From: Tim Roberts <timr@xxxxxxxxx>
- To: wdmaudiodev@xxxxxxxxxxxxx
- Date: Tue, 30 Mar 2010 13:54:15 -0700
eric wrote:
> Hello Tim,
>
> Sorry for describing the problem such unclear and make many
> mistakes. I might be exhausted,...anyway. Let me make it much
> detailed. The hardware's volume setting range is from 0 to 49 in
> decimal, therefore, I set the KSPROPERTY_STEPPING_LONG as I wrote in
> previous email in order to make the code simpler even though the value
> should be set to a reasonable value in db level. However, when I
> scroll the volume control to it's lowest position, the 'Data' I got in
> the SetVolume() always is a strange value -2147483648. In addition,
> every step's value is not linear as list like 49(uppermost), -5676,
> -7XXX, -9XXX,......, -2147483648(lowest value). What I must say is
> this setting in Win7 is workable, every step will honor my setting as
> 49, 48, 47....3, 2, 1, 0. and I do not implement a mute node.
I can't see any reason for this behavior. As an experiment, have you
tried KSPROPERTY_MEMBER_RANGES instead of KSPROPERTY_MEMBER_STEPPEDRANGES?
--
Tim Roberts, timr@xxxxxxxxx
Providenza & Boekelheide, Inc.
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