BYTE
VC_In(
PDEVICE_INFO pDevInfo,
BYTE bOffset
);
The VC_In function reads one byte from a device’s mapped I/O port address space.
Parameters
pDevInfo
Pointer to the DEVICE_INFO structure returned by VC_Init.
bOffset
Offset from the mapped I/O port’s base address.
Return Value
Byte contents of the specified port address offset.
Comments
A kernel-mode video capture driver specifies the base address of a device’s I/O port address space when calling VC_GetResources. The bOffset parameter to VC_In specifies an offset from that base address.
See Also