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120 lines
2.6 KiB
C
120 lines
2.6 KiB
C
/*
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* VideoPort driver
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*
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* Copyright (C) 2002, 2003, 2004 ReactOS Team
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*/
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#include "videoprt.h"
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/* PUBLIC FUNCTIONS ***********************************************************/
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/*
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* @implemented
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*/
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VP_STATUS NTAPI
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VideoPortCreateEvent(
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IN PVOID HwDeviceExtension,
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IN ULONG EventFlag,
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IN PVOID Unused,
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OUT PEVENT *Event)
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{
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PVIDEO_PORT_EVENT VpEvent;
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EVENT_TYPE Type = SynchronizationEvent;
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/* Allocate storage for the event structure */
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VpEvent = ExAllocatePoolWithTag(
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NonPagedPool,
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sizeof(VIDEO_PORT_EVENT),
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TAG_VIDEO_PORT);
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/* Fail if not enough memory */
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if (!VpEvent) return ERROR_NOT_ENOUGH_MEMORY;
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/* Initialize the event structure */
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RtlZeroMemory(VpEvent, sizeof(VIDEO_PORT_EVENT));
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VpEvent->pKEvent = &VpEvent->Event;
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/* Determine the event type */
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if (EventFlag & NOTIFICATION_EVENT)
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Type = NotificationEvent;
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/* Initialize kernel event */
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KeInitializeEvent(VpEvent->pKEvent, Type, EventFlag & INITIAL_EVENT_SIGNALED);
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/* Indicate success */
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return NO_ERROR;
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}
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/*
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* @implemented
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*/
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VP_STATUS NTAPI
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VideoPortDeleteEvent(
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IN PVOID HwDeviceExtension,
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IN PEVENT Event)
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{
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/* Free storage */
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ExFreePool(Event);
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/* Indicate success */
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return NO_ERROR;
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}
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/*
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* @implemented
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*/
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LONG NTAPI
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VideoPortSetEvent(
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IN PVOID HwDeviceExtension,
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IN PEVENT Event)
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{
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return KeSetEvent(Event->pKEvent, IO_NO_INCREMENT, FALSE);
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}
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/*
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* @implemented
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*/
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VOID NTAPI
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VideoPortClearEvent(
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IN PVOID HwDeviceExtension,
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IN PEVENT Event)
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{
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KeClearEvent(Event->pKEvent);
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}
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/*
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* @implemented
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*/
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VP_STATUS NTAPI
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VideoPortWaitForSingleObject(
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IN PVOID HwDeviceExtension,
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IN PVOID Object,
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IN PLARGE_INTEGER Timeout OPTIONAL)
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{
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return KeWaitForSingleObject(
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Object,
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Executive,
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KernelMode,
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FALSE,
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Timeout);
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}
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