vidix/dhahelperwin/dhahelper.h

   1 /*
   2  * direct hardware access under Windows NT/2000/XP
   3  *
   4  * Copyright (c) 2004 Sascha Sommer <saschasommer@freenet.de>
   5  *
   6  * This file is part of MPlayer.
   7  *
   8  * MPlayer is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * MPlayer is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License along
  19  * with MPlayer; if not, write to the Free Software Foundation, Inc.,
  20  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  21  */
  22
  23 #ifndef MPLAYER_DHAHELPER_H
  24 #define MPLAYER_DHAHELPER_H
  25
  26 // Define the various device type values.  Note that values used by Microsoft
  27 // Corporation are in the range 0-32767, and 32768-65535 are reserved for use
  28 // by customers.
  29
  30 #define FILE_DEVICE_DHAHELPER 0x00008011
  31
  32 // Macro definition for defining IOCTL and FSCTL function control codes.
  33 // Note that function codes 0-2047 are reserved for Microsoft Corporation,
  34 // and 2048-4095 are reserved for customers.
  35
  36 #define DHAHELPER_IOCTL_INDEX 0x810
  37
  38 #define IOCTL_DHAHELPER_MAPPHYSTOLIN     CTL_CODE(FILE_DEVICE_DHAHELPER,     \
  39                                                   DHAHELPER_IOCTL_INDEX,     \
  40                                                   METHOD_BUFFERED,           \
  41                                                   FILE_ANY_ACCESS)
  42
  43 #define IOCTL_DHAHELPER_UNMAPPHYSADDR    CTL_CODE(FILE_DEVICE_DHAHELPER,     \
  44                                                   DHAHELPER_IOCTL_INDEX + 1, \
  45                                                   METHOD_BUFFERED,           \
  46                                                   FILE_ANY_ACCESS)
  47
  48 #define IOCTL_DHAHELPER_ENABLEDIRECTIO   CTL_CODE(FILE_DEVICE_DHAHELPER,     \
  49                                                   DHAHELPER_IOCTL_INDEX + 2, \
  50                                                   METHOD_BUFFERED,           \
  51                                                   FILE_ANY_ACCESS)
  52
  53 #define IOCTL_DHAHELPER_DISABLEDIRECTIO  CTL_CODE(FILE_DEVICE_DHAHELPER,     \
  54                                                   DHAHELPER_IOCTL_INDEX + 3, \
  55                                                   METHOD_BUFFERED,           \
  56                                                   FILE_ANY_ACCESS)
  57
  58
  59 #if !defined(__MINGW32__) && !defined(__CYGWIN__)
  60 #pragma pack(1)
  61 typedef struct dhahelper_t {
  62 #else
  63 struct __attribute__((__packed__)) dhahelper_t {
  64 #endif
  65   unsigned int size;
  66   void* base;
  67   void* ptr;
  68 };
  69
  70 typedef struct dhahelper_t dhahelper_t;
  71
  72 #endif /* MPLAYER_DHAHELPER_H */