I understand that, but the APOs require that they be installed with a HW codec, correct? We're looking for a solution that is independent of the hardware. Jeff ________________________________ From: wdmaudiodev-bounce@xxxxxxxxxxxxx [mailto:wdmaudiodev-bounce@xxxxxxxxxxxxx] On Behalf Of Frank Yerrace Sent: Tuesday, June 20, 2006 10:48 AM To: wdmaudiodev@xxxxxxxxxxxxx Subject: [wdmaudiodev] Re: Vista logo signing for software-only driver For Vista, the appropriate programming model for this sort of signal processing is audio "System Effects" which are implemented as user-mode modules rather than kernel-mode. If you search the archives of this mailing list you will find some discussions about System Effects. Frank Yerrace Microsoft Corporation This posting is provided "AS IS" with no warranties, and confers no rights. ________________________________ From: wdmaudiodev-bounce@xxxxxxxxxxxxx [mailto:wdmaudiodev-bounce@xxxxxxxxxxxxx] On Behalf Of Jeff Claar Sent: Tuesday, June 20, 2006 10:27 AM To: wdmaudiodev@xxxxxxxxxxxxx Subject: [wdmaudiodev] Vista logo signing for software-only driver Hi everyone, I have an AVStream driver that takes an audio input, does some processing on it, then passes it to the hardware codec (using KsCreatePin and KsStreamIo). Does anyone know if it is possible to get a WHQL signature for a driver like this? I'm passing just about all the HCT 12.1 tests, but I'm having trouble finding information about submitting software-only drivers. I'm concerned that it will not be able to play protected content under Vista. Thanks, Jeff ****************** WDMAUDIODEV addresses: Post message: mailto:wdmaudiodev@xxxxxxxxxxxxx Subscribe: mailto:wdmaudiodev-request@xxxxxxxxxxxxx?subject=subscribe Unsubscribe: mailto:wdmaudiodev-request@xxxxxxxxxxxxx?subject=unsubscribe Moderator: mailto:wdmaudiodev-moderators@xxxxxxxxxxxxx URL to WDMAUDIODEV page: http://www.wdmaudiodev.com/