karthiksharmasg@xxxxxxx wrote: > HI Tim > Currently i am trying to communicate using the IRP call but > there is no satisfactory result, is there any other method to do this. WHAT are you sending by IRP? How did you get a device object to send the IRP to? How are you handling the IRPs? MSVAD is an AVStream driver. IRPs are intercepted by the AVStream framework. These are two devices within the same driver. There's no real need to use IRPs to communicate. There are many ways to share a buffer within a single driver. I think you need to take some time away from the keyboard to sketch out your design before you start coding. -- Tim Roberts, timr@xxxxxxxxx Providenza & Boekelheide, Inc. ****************** 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/