reactos/drivers/video/videoprt/event.c

   1 /*
   2  * VideoPort driver
   3  *
   4  * Copyright (C) 2002, 2003, 2004 ReactOS Team
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Library General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Library General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Library General Public
  17  * License along with this library; see the file COPYING.LIB.
  18  * If not, write to the Free Software Foundation,
  19  * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  20  *
  21  * $Id$
  22  */
  23
  24 #include "videoprt.h"
  25
  26 /* PUBLIC FUNCTIONS ***********************************************************/
  27
  28 /*
  29  * @implemented
  30  */
  31
  32 VP_STATUS STDCALL
  33 VideoPortCreateEvent(
  34    IN PVOID HwDeviceExtension,
  35    IN ULONG EventFlag,
  36    IN PVOID Unused,
  37    OUT PEVENT *Event)
  38 {
  39    EVENT_TYPE Type;
  40
  41    (*Event) = ExAllocatePoolWithTag(
  42       NonPagedPool,
  43       sizeof(KEVENT),
  44       TAG_VIDEO_PORT);
  45
  46    if ((*Event) == NULL)
  47       return ERROR_NOT_ENOUGH_MEMORY;
  48
  49    if (EventFlag & NOTIFICATION_EVENT)
  50       Type = NotificationEvent;
  51    else
  52       Type = SynchronizationEvent;
  53
  54    KeInitializeEvent((PKEVENT)*Event, Type, EventFlag & INITIAL_EVENT_SIGNALED);
  55    return NO_ERROR;
  56 }
  57
  58 /*
  59  * @implemented
  60  */
  61
  62 VP_STATUS STDCALL
  63 VideoPortDeleteEvent(
  64    IN PVOID HwDeviceExtension,
  65    IN PEVENT Event)
  66 {
  67    ExFreePool(Event);
  68    return NO_ERROR;
  69 }
  70
  71 /*
  72  * @implemented
  73  */
  74
  75 LONG STDCALL
  76 VideoPortSetEvent(
  77    IN PVOID HwDeviceExtension,
  78    IN PEVENT Event)
  79 {
  80    return KeSetEvent((PKEVENT)Event, IO_NO_INCREMENT, FALSE);
  81 }
  82
  83 /*
  84  * @implemented
  85  */
  86
  87 VOID STDCALL
  88 VideoPortClearEvent(
  89    IN PVOID HwDeviceExtension,
  90    IN PEVENT Event)
  91 {
  92    KeClearEvent((PKEVENT)Event);
  93 }
  94
  95 /*
  96  * @implemented
  97  */
  98
  99 VP_STATUS STDCALL
 100 VideoPortWaitForSingleObject(
 101    IN PVOID HwDeviceExtension,
 102    IN PVOID Object,
 103    IN PLARGE_INTEGER Timeout OPTIONAL)
 104 {
 105    return KeWaitForSingleObject(
 106       Object,
 107       Executive,
 108       KernelMode,
 109       FALSE,
 110       Timeout);
 111 }