AV/C Streaming Protocol Driver Function Codes
The AV/C Streaming filter driver intercepts IRPs on their way down the device stack.
To communicate with avcstrm.sys, subunit drivers must set their IRP's IoControlCode member to IOCTL_AVCSTRM_CLASS.
To make I/O requests, include the header file avcstrm.h, which is included with the Microsoft Windows Driver Kit (WDK).
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