VC_AllocMem

PVOID
VC_AllocMem(
    PDEVICE_INFO pDevInfo,
    ULONG Length
    );

The VC_AllocMem function allocates a specified amount of nonpaged memory for use by a kernel-mode video capture driver.

Parameters

pDevInfo

Pointer to the DEVICE_INFO structure returned by VC_Init.

Length

Size, in bytes, of memory to be allocated.

Return Value

Returns a pointer to the allocated memory, if the operation succeeds. Otherwise returns NULL.

Comments

The VC_AllocMem function calls ExAllocatePool, with a pool type of NonPagedPool. The allocated memory can be referenced by the driver’s InterruptAcknowledge and CaptureService function.