I checked the driver with KSStudio and KSPROPERTY_PIN_GLOBALCINSTANCES CurrentCount is 0 and PossibleCount is 1 for the recording pin.
NewStream gets called and succeeds. After that, SetNotificationFreq is called and immediately afterwards the stream gets destroyed!?!
Any idea what else might cause the unavailable state?And what could cause the different behavior when replacing the MUX by a SUM node?
Thanks, Stephan Mitchell Rundle wrote:
Yes, MUXes are definitely supported in Vista. When the endpoints are "unavailable" it indicates that either: 1) the CurrentCount of KSPROPERTY_PIN_GLOBALCINSTANCES on the host pin factory is non-zero, or 2) the system was unable to instantiate the host pin To see if (1) is the problem, run ksstudio and look at the values under "Instance Data" for the host pin factory. To see if (2) is the problem, put a breakpoint in your drivers NewStream implementation and see if it gets hit. Regards, Mitch Rundle Microsoft This posting is provided "AS IS" with no warranties, and confers no rights. -----Original Message----- From: wdmaudiodev-bounce@xxxxxxxxxxxxx [mailto:wdmaudiodev-bounce@xxxxxxxxxxxxx] On Behalf Of Stephan Kappertz Sent: Wednesday, November 08, 2006 9:02 AM To: WDMAUDIODEV Subject: [wdmaudiodev] WaveCyclic input ports show up as "currently unavailable" under Vista RC2 Hi All, we have a WaveCyclic driver that uses a node of type KSNODETYPE_MUX in its topology to express the fact that the user can select one of three possible input sources for the ADC (but not more than one). Under XP this topology causes sndvol32 to show all input sources with selector check boxes. That's what we want. Now when running the same driver under Vista RC2, all three inputs show up as "Currently unavailable". It is not possible to select an input and apps don't see any input source. The KSPROPERTY_MUX_SOURCES property is queried by Vista with KSPROPERTY_TYPE_GET and the driver returns the default active source with STATUS_SUCCESS. Vista never calls the property handler with KSPROPERTY_TYPE_SET. When changing the mux node to KSNODETYPE_SUM, all three inputs show up as available and each one is selectable in any audio application. Now the question is: is KSNODETYPE_MUX supposed to work under Vista? And if not, how are we supposed to replace it for a device that has this hardware design? Thanks, Stephan
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