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COPP Video Miniport Driver IOCTL Template Code

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This section applies only to Windows Server 2003 SP1 and later, and Windows XP SP2 and later.

The video miniport driver must implement a HwVidStartIO function to process the I/O requests that originate in the display driver. The following example code shows only how the video miniport driver processes COPP IOCTLs:

BOOLEAN
HwVidStartIO(
    PHW_DEVICE_EXTENSION pHwDeviceExtension,
    PVIDEO_REQUEST_PACKET pVideoRequestPacket
    )
{
    VP_STATUS vpStatus;
    switch (pVideoRequestPacket->IoControlCode)
    {
        case IOCTL_COPP_OpenDevice:
            vpStatus = IoctlCOPPOpenDevice(pHwDeviceExtension, pVideoRequestPacket);
            break;
        case IOCTL_COPP_GetCertificateLength:
            vpStatus = IoctlCOPPGetCertificateLength(pHwDeviceExtension, pVideoRequestPacket);
            break;
        case IOCTL_COPP_KeyExchange:
            vpStatus = IoctlCOPPKeyExchange(pHwDeviceExtension, pVideoRequestPacket);
            break;
        case IOCTL_COPP_StartSequence:
            vpStatus = IoctlCOPPStartSeqence(pHwDeviceExtension, pVideoRequestPacket);
            break;
        case IOCTL_COPP_Command:
            vpStatus = IoctlCOPPCommand(pHwDeviceExtension, pVideoRequestPacket);
            break;
        case IOCTL_COPP_Status:
            vpStatus = IoctlCOPPStatus(pHwDeviceExtension, pVideoRequestPacket);
            break;
        case IOCTL_COPP_CloseDevice:
            vpStatus = IoctlCOPPCloseDevice(pHwDeviceExtension, pVideoRequestPacket);
            break;
        default:
            vpStatus = ERROR_INVALID_FUNCTION;
            break;
    }
    pVideoRequestPacket->StatusBlock->Status = vpStatus;
    return TRUE;
}