75 lines
1.7 KiB
C
75 lines
1.7 KiB
C
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/*************************************************************************
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*
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* video.c
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*
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* This module contains routines for managing the ICA video channel.
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*
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* Copyright 1998, Microsoft.
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*
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*************************************************************************/
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/*
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* Includes
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*/
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#include <precomp.h>
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#pragma hdrstop
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NTSTATUS
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IcaDeviceControlVideo(
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IN PICA_CHANNEL pChannel,
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IN PIRP Irp,
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IN PIO_STACK_LOCATION IrpSp
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)
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/*++
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Routine Description:
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This is the DeviceControl routine for the ICA video channel.
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Arguments:
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pChannel -- pointer to ICA_CHANNEL object
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Irp - Pointer to I/O request packet
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IrpSp - pointer to the stack location to use for this request.
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Return Value:
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NTSTATUS -- Indicates whether the request was successfully queued.
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--*/
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{
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SD_IOCTL SdIoctl;
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NTSTATUS Status;
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CLONG Method;
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// Verify the buffer method.
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Method = IrpSp->Parameters.DeviceIoControl.IoControlCode & 0x03;
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ASSERT( Method == METHOD_BUFFERED );
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if ( Method != METHOD_BUFFERED ) {
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Status = STATUS_INVALID_DEVICE_REQUEST;
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}
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else {
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SdIoctl.BytesReturned = 0;
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SdIoctl.IoControlCode = IrpSp->Parameters.DeviceIoControl.IoControlCode;
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SdIoctl.InputBuffer = Irp->AssociatedIrp.SystemBuffer;
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SdIoctl.InputBufferLength = IrpSp->Parameters.DeviceIoControl.InputBufferLength;
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SdIoctl.OutputBuffer = Irp->AssociatedIrp.SystemBuffer;
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SdIoctl.OutputBufferLength = IrpSp->Parameters.DeviceIoControl.OutputBufferLength;
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Status = IcaCallDriver( pChannel, SD$IOCTL, &SdIoctl );
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Irp->IoStatus.Information = SdIoctl.BytesReturned;
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}
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return( Status );
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}
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