过滤驱动程序中如何能改变鼠标报告的数据？？

请问在这个鼠标过滤驱动程序中，如何在向上层驱动程序报告之前我能改变鼠标报告的数据？？
也就是说我应该如何去操作获取的数据？
简单点，比如实现鼠标数据取反？请高手帮我改改这个代码，多谢！
VOID
MouFilter_ServiceCallback(
    IN PDEVICE_OBJECT DeviceObject,
    IN PMOUSE_INPUT_DATA InputDataStart,
    IN PMOUSE_INPUT_DATA InputDataEnd,
    IN OUT PULONG InputDataConsumed
    )
/*++
Routine Description:
    Called when there are mouse packets to report to the RIT.  You can do anything you like to the packets.  For instance:
    o Drop a packet altogether
    o Mutate the contents of a packet
    o Insert packets into the stream
Arguments:
    DeviceObject - Context passed during the connect IOCTL
    InputDataStart - First packet to be reported  
    InputDataEnd - One past the last packet to be Reported.  Total number of packets is equal to InputDataEnd - InputDataStart  
    InputDataConsumed - Set to the total number of packets consumed by the RIT   (via the function pointer we replaced in the connect IOCTL)
Return Value:
    Status is returned.
--*/
{
    PDEVICE_EXTENSION   devExt;
    devExt = (PDEVICE_EXTENSION) DeviceObject->DeviceExtension;
    //
    // UpperConnectData must be called at DISPATCH
    //
    (*(PSERVICE_CALLBACK_ROUTINE) devExt->UpperConnectData.ClassService)(
      devExt->UpperConnectData.ClassDeviceObject,
        InputDataStart,
        InputDataEnd,
        InputDataConsumed
        );
}

就在这一段中就可以实现
IN PMOUSE_INPUT_DATA InputDataStart,
IN PMOUSE_INPUT_DATA InputDataEnd,
IN OUT PULONG InputDataConsumed
这几个数据我不知道应该怎么去操作它
哪位高手来几笔哦
多谢多谢