mirror of
https://github.com/mpv-player/mpv
synced 2024-12-23 15:22:09 +00:00
41bfa3e8e0
based on a patch by Attila Ötvös, oattila,,@,,chello,,.,,hu git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@17972 b3059339-0415-0410-9bf9-f77b7e298cf2
39 lines
1.0 KiB
C
39 lines
1.0 KiB
C
/*
|
|
This file is based on:
|
|
$XFree86: xc/programs/Xserver/hw/xfree86/etc/scanpci.c,v 3.34.2.17 1998/11/10 11:55:40 dawes Exp $
|
|
Modified for readability by Nick Kurshev
|
|
*/
|
|
#include <windows.h>
|
|
#include <ddk/ntddk.h>
|
|
#include "../dhahelperwin/dhahelper.h"
|
|
|
|
static HANDLE hDriver;
|
|
extern int IsWinNT();
|
|
|
|
|
|
|
|
|
|
|
|
static __inline__ int enable_os_io(void)
|
|
{
|
|
if(IsWinNT()){
|
|
DWORD dwBytesReturned;
|
|
hDriver = CreateFile("\\\\.\\DHAHELPER",GENERIC_READ | GENERIC_WRITE,0,NULL,OPEN_EXISTING,FILE_ATTRIBUTE_NORMAL,NULL);
|
|
if(!DeviceIoControl(hDriver, IOCTL_DHAHELPER_ENABLEDIRECTIO, NULL,0, NULL, 0, &dwBytesReturned, NULL)){
|
|
fprintf(stderr,"Unable to enable directio please install dhahelper.sys.\n");
|
|
return(1);
|
|
}
|
|
}
|
|
return(0);
|
|
}
|
|
|
|
static __inline__ int disable_os_io(void)
|
|
{
|
|
if(IsWinNT()){
|
|
DWORD dwBytesReturned;
|
|
DeviceIoControl(hDriver, IOCTL_DHAHELPER_DISABLEDIRECTIO, NULL,0, NULL, 0, &dwBytesReturned, NULL);
|
|
CloseHandle(hDriver);
|
|
}
|
|
return(0);
|
|
}
|