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dinput: Move joystick mapping functions to the generic part.

This commit is contained in:
Aric Stewart 2009-03-09 10:07:07 -05:00 committed by Alexandre Julliard
parent 94a5e0978d
commit e90e7e5b77
3 changed files with 59 additions and 56 deletions
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55
dlls/dinput/joystick.c
View File

@ -387,3 +387,58 @@ HRESULT WINAPI JoystickAGenericImpl_GetDeviceState(
return DI_OK;
}
/*
* This maps the read value (from the input event) to a value in the
* 'wanted' range.
* Notes:
* Dead zone is in % multiplied by a 100 (range 0..10000)
*/
LONG joystick_map_axis(ObjProps *props, int val)
{
LONG ret;
LONG dead_zone = MulDiv( props->lDeadZone, props->lDevMax - props->lDevMin, 10000 );
LONG dev_range = props->lDevMax - props->lDevMin - dead_zone;
/* Center input */
val -= (props->lDevMin + props->lDevMax) / 2;
/* Remove dead zone */
if (abs( val ) <= dead_zone / 2)
val = 0;
else
val = val < 0 ? val + dead_zone / 2 : val - dead_zone / 2;
/* Scale and map the value from the device range into the required range */
ret = MulDiv( val, props->lMax - props->lMin, dev_range ) +
(props->lMin + props->lMax) / 2;
/* Clamp in case or rounding errors */
if (ret > props->lMax) ret = props->lMax;
else if (ret < props->lMin) ret = props->lMin;
TRACE( "(%d <%d> %d) -> (%d <%d> %d): val=%d ret=%d\n",
props->lDevMin, dead_zone, props->lDevMax,
props->lMin, props->lDeadZone, props->lMax,
val, ret );
return ret;
}
/*
* Maps POV x & y event values to a DX "clock" position:
* 0
* 31500 4500
* 27000 -1 9000
* 22500 13500
* 18000
*/
DWORD joystick_map_pov(POINTL *p)
{
if (p->x > 0)
return p->y < 0 ? 4500 : !p->y ? 9000 : 13500;
else if (p->x < 0)
return p->y < 0 ? 31500 : !p->y ? 27000 : 22500;
else
return p->y < 0 ? 0 : !p->y ? -1 : 18000;
}

57
dlls/dinput/joystick_linuxinput.c
View File

@ -64,65 +64,10 @@
#include "dinput_private.h"
#include "device_private.h"
#include "joystick_private.h"
WINE_DEFAULT_DEBUG_CHANNEL(dinput);
/*
* Maps POV x & y event values to a DX "clock" position:
* 0
* 31500 4500
* 27000 -1 9000
* 22500 13500
* 18000
*/
DWORD joystick_map_pov(POINTL *p)
{
if (p->x > 0)
return p->y < 0 ? 4500 : !p->y ? 9000 : 13500;
else if (p->x < 0)
return p->y < 0 ? 31500 : !p->y ? 27000 : 22500;
else
return p->y < 0 ? 0 : !p->y ? -1 : 18000;
}
/*
* This maps the read value (from the input event) to a value in the
* 'wanted' range.
* Notes:
* Dead zone is in % multiplied by a 100 (range 0..10000)
*/
LONG joystick_map_axis(ObjProps *props, int val)
{
LONG ret;
LONG dead_zone = MulDiv( props->lDeadZone, props->lDevMax - props->lDevMin, 10000 );
LONG dev_range = props->lDevMax - props->lDevMin - dead_zone;
/* Center input */
val -= (props->lDevMin + props->lDevMax) / 2;
/* Remove dead zone */
if (abs( val ) <= dead_zone / 2)
val = 0;
else
val = val < 0 ? val + dead_zone / 2 : val - dead_zone / 2;
/* Scale and map the value from the device range into the required range */
ret = MulDiv( val, props->lMax - props->lMin, dev_range ) +
(props->lMin + props->lMax) / 2;
/* Clamp in case or rounding errors */
if (ret > props->lMax) ret = props->lMax;
else if (ret < props->lMin) ret = props->lMin;
TRACE( "(%d <%d> %d) -> (%d <%d> %d): val=%d ret=%d\n",
props->lDevMin, dead_zone, props->lDevMax,
props->lMin, props->lDeadZone, props->lMax,
val, ret );
return ret;
}
#ifdef HAVE_CORRECT_LINUXINPUT_H
#define EVDEVPREFIX "/dev/input/event"

3
dlls/dinput/joystick_private.h
View File

@ -46,6 +46,9 @@ typedef struct JoystickGenericImpl
joy_polldev_handler *joy_polldev;
} JoystickGenericImpl;
LONG joystick_map_axis(ObjProps *props, int val);
DWORD joystick_map_pov(POINTL *p);
HRESULT WINAPI JoystickWGenericImpl_GetObjectInfo(LPDIRECTINPUTDEVICE8W iface,
LPDIDEVICEOBJECTINSTANCEW pdidoi, DWORD dwObj, DWORD dwHow);