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windows-server-2003/multimedia/directx/dinput/dx8/dll/dical.c

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/*****************************************************************************
*
* DICal.c
*
* Copyright (c) 1996 Microsoft Corporation. All Rights Reserved.
*
* Abstract:
*
* Functions that manage axis ramps and calibration.
*
* Structure names begin with "Joy" for historical reasons.
*
* Contents:
*
* CCal_CookRange
* CCal_RecalcRange
*
*****************************************************************************/
#include "dinputpr.h"
/*****************************************************************************
*
* The sqiffle for this file.
*
*****************************************************************************/
#define sqfl sqflCal
/*****************************************************************************
*
* @doc INTERNAL
*
* @func LONG | CCal_MulDiv |
*
* High-speed MulDiv for Intel x86 boxes. Otherwise, uses
* the standard MulDiv. The values involved are always
* nonnegative.
*
* @parm LONG | lA |
*
* Multiplicand.
*
* @parm LONG | lB |
*
* Multiplier.
*
* @parm LONG | lC |
*
* Denominator.
*
* @returns
*
* lA * lB / lC, with 64-bit intermediate precision.
*
*****************************************************************************/
#if defined(_X86_)
#pragma warning(disable:4035) /* no return value (duh) */
__declspec(naked) LONG EXTERNAL
CCal_MulDiv(LONG lA, LONG lB, LONG lC)
{
lA; lB; lC;
_asm {
mov eax, [esp+4]
mul dword ptr [esp+8]
div dword ptr [esp+12]
ret 12
}
}
#pragma warning(default:4035)
#endif
/*****************************************************************************
*
* @doc INTERNAL
*
* @method void | CCal | CookAxisPOV |
*
* Cook a piece of POV data into one of five defined data.
*
* @cwrap PJOYRANGECONVERT | this
*
* @parm INOUT PLONG | pl |
*
* On entry, contains the raw value. On exit, contains the
* cooked value. (Or the raw value if the axis is raw.)
*
* @returns
*
* None.
*
*****************************************************************************/
#ifdef WINNT
void CookAxisPOV( PJOYRANGECONVERT this, LONG UNALIGNED *pl )
{
LONG l;
/*
* figure out which direction this value indicates...
*/
if( (*pl > this->lMinPOV[JOY_POVVAL_FORWARD])
&&(*pl < this->lMaxPOV[JOY_POVVAL_FORWARD]) )
{
l = JOY_POVFORWARD;
}
else if( (*pl > this->lMinPOV[JOY_POVVAL_BACKWARD])
&&(*pl < this->lMaxPOV[JOY_POVVAL_BACKWARD]) )
{
l = JOY_POVBACKWARD;
}
else if( (*pl > this->lMinPOV[JOY_POVVAL_LEFT])
&&(*pl < this->lMaxPOV[JOY_POVVAL_LEFT]) )
{
l = JOY_POVLEFT;
}
else if( (*pl > this->lMinPOV[JOY_POVVAL_RIGHT])
&&(*pl < this->lMaxPOV[JOY_POVVAL_RIGHT]) )
{
l = JOY_POVRIGHT;
}
else
{
l = JOY_POVCENTERED;
}
#if 0
{
TCHAR buf[100];
wsprintf(buf, TEXT("calibrated pov: %d\r\n"), l);
OutputDebugString(buf);
}
#endif
*pl = l;
}
#endif
/*****************************************************************************
*
* @doc INTERNAL
*
* @method void | CCal | CookRange |
*
* Cook a piece of phys data into a range.
*
* @cwrap PJOYRANGECONVERT | this
*
* @parm INOUT PLONG | pl |
*
* On entry, contains the raw value. On exit, contains the
* cooked value. (Or the raw value if the axis is raw.)
*
* @returns
*
* None.
*
*****************************************************************************/
void EXTERNAL
CCal_CookRange(PJOYRANGECONVERT this, LONG UNALIGNED *pl)
{
if (this->fRaw) {
/*
* Nothing to do!
*/
} else {
#ifdef WINNT
if( this->fPolledPOV ) {
CookAxisPOV( this, pl );
} else
#endif
{
LONG lRc = 0;
LONG l;
PCJOYRAMP prmp;
l = *pl;
/*
* Choose the low or high ramp, depending on which side we're in.
*
* This comparison could've been against Dmax or Dmin or Pc.
* We must use Dmax because we jiggered up the rmpHigh so
* that it rounds properly, so we can't use the flat part
* below rmpHigh.x because it's at the wrong level.
*/
if (l < this->rmpHigh.x) {
prmp = &this->rmpLow;
} else {
prmp = &this->rmpHigh;
}
if (l <= prmp->x) {
lRc = 0;
} else {
l -= prmp->x;
if ((DWORD)l < prmp->dx) {
/*
* Note that prmp->dx cannot be zero because it
* is greater than something!
*/
lRc = CCal_MulDiv((DWORD)l, prmp->dy, prmp->dx);
} else {
lRc = prmp->dy;
}
}
lRc += prmp->y;
if( this->dwCPointsNum > 2 )
{
LONG l2 = *pl;
BOOL fCooked = FALSE;
DWORD i;
if( l2 < this->rmpLow.x || l2 > (this->rmpHigh.x + (LONG)this->rmpHigh.dx) || //in Saturation Zone
( l2 > (this->rmpLow.x + (LONG)this->rmpLow.dx) && l2 < this->rmpHigh.x ) //in Dead Zone
) {
//RPF( "Raw: %d Cooked: %ld in Saturation or Dead Zone." );
goto _exitcp;
}
for(i=0; i<this->dwCPointsNum-1; i++) {
if( l2 >= this->cp[i].lP && l2 < this->cp[i+1].lP ) {
l2 -= this->cp[i].lP;
if( this->cp[i+1].dwLog > this->cp[i].dwLog ) {
lRc = CCal_MulDiv((DWORD)l2,
this->cp[i+1].dwLog - this->cp[i].dwLog,
this->cp[i+1].lP - this->cp[i].lP);
} else {
lRc = -1 * CCal_MulDiv((DWORD)l2,
this->cp[i].dwLog - this->cp[i+1].dwLog,
this->cp[i+1].lP - this->cp[i].lP);
}
lRc += this->cp[i].dwLog;
AssertF(lRc >= 0);
AssertF(this->lMax >= this->lMin);
lRc = CCal_MulDiv((DWORD)lRc,
this->lMax - this->lMin + 1,
RANGEDIVISIONS);
lRc += this->lMin;
fCooked = TRUE;
#if 0
RPF( "Raw: %d Cooked: %ld Area %d: (%d - %d) -> (%d - %d)",
*pl, lRc, i, this->cp[i].lP, this->cp[i+1].lP,
this->cp[i].dwLog, this->cp[i+1].dwLog );
#endif
break;
}
}
_exitcp:
;
}
*pl = lRc;
}
}
}
/*****************************************************************************
*
* @doc INTERNAL
*
* @method void | CCal | RecalcRange |
*
* Compute all the values that derive from the user's
* range settings.
*
* Be careful not to create values that will cause us to
* divide by zero later. Fortunately,
* <f CCal_CookRange> never divides by zero due to the
* clever way it was written.
*
* @cwrap PJOYRANGECONVERT | this
*
* @returns
*
* None.
*
*****************************************************************************/
void EXTERNAL
CCal_RecalcRange(PJOYRANGECONVERT this)
{
int dx;
DWORD dwSat;
AssertF(this->dwDz <= RANGEDIVISIONS);
AssertF(this->dwSat <= RANGEDIVISIONS);
AssertF(this->lMin <= this->lC);
AssertF(this->lC <= this->lMax);
dwSat = max(this->dwSat, this->dwDz);
/* Smin - Bottom of saturation range */
dx = CCal_MulDiv(this->dwPc - this->dwPmin, dwSat, RANGEDIVISIONS);
this->rmpLow.x = this->dwPc - dx;
/* Dmin - Bottom of dead zone */
dx = CCal_MulDiv(this->dwPc - this->dwPmin, this->dwDz, RANGEDIVISIONS);
this->rmpLow.dx = (this->dwPc - dx) - this->rmpLow.x;
/*
* Establish the vertical extent of the low end of the ramp.
*/
this->rmpLow.y = this->lMin;
this->rmpLow.dy = this->lC - this->lMin;
/* Dmax - Top of the dead zone */
dx = CCal_MulDiv(this->dwPmax - this->dwPc, this->dwDz, RANGEDIVISIONS);
if (this->dwPmax > this->dwPc+1){
this->rmpHigh.x = this->dwPc + dx + 1;
} else {
this->rmpHigh.x = this->dwPc + dx;
}
/* Smax - Top of the saturation range */
dx = CCal_MulDiv(this->dwPmax - this->dwPc, dwSat, RANGEDIVISIONS);
this->rmpHigh.dx = (this->dwPc + dx) - this->rmpHigh.x;
/*
* Establish the vertical extent of the high end of the ramp.
*
* If the high end is zero, then the entire ramp is zero.
* Otherwise, put the bottom at +1 so that when the user
* just barely leaves the dead zone, we report a nonzero
* value. Note: If we were really clever, we could use
* a bias to get "round upwards", but it's not worth it.
*
*/
if ( (this->lMax > this->lC) && (this->dwPmax > this->dwPc+1) ) {
this->rmpHigh.y = this->lC + 1;
} else {
this->rmpHigh.y = this->lC;
}
this->rmpHigh.dy = this->lMax - this->rmpHigh.y;
#if 0
RPF( "Raw: %d Dead Zone: 0x%08x Saturation: 0x%08x",
this->fRaw, this->dwDz, this->dwSat );
RPF( "Physical min: 0x%08x max: 0x%08x cen: 0x%08x",
this->lMin, this->lMax, this->lC );
RPF( "Logical min: 0x%08x max: 0x%08x cen: 0x%08x",
this->dwPmin, this->dwPmax, this->dwPc );
RPF( "Lo ramp X: 0x%08x dX: 0x%08x Y: 0x%08x dY: 0x%08x",
this->rmpLow.x, this->rmpLow.dx, this->rmpLow.y, this->rmpLow.dy );
RPF( "Hi ramp X: 0x%08x dX: 0x%08x Y: 0x%08x dY: 0x%08x",
this->rmpHigh.x, this->rmpHigh.dx, this->rmpHigh.y, this->rmpHigh.dy );
#endif
}
/*****************************************************************************
*
* @doc INTERNAL
*
* @method HRESULT | CCal | GetProperty |
*
* Read a property from a calibration structure.
*
* The caller is permitted to pass a property that doesn't
* apply to calibration, in which case <c E_NOTIMPL>
* is returned, as it should be.
*
* @cwrap PJOYRANGECONVERT | this
*
* @parm REFGUID | rguid |
*
* The property being retrieved.
*
* @parm IN REFGUID | rguid |
*
* The identity of the property to be obtained.
*
* @parm IN LPDIPROPHEADER | pdiph |
*
* Points to the <t DIPROPHEADER> portion of a structure
* which depends on the property.
*
* @returns
*
* <c S_OK> if the operation completed successfully.
*
* <c E_NOTIMPL> nothing happened. The caller will do
* the default thing in response to <c E_NOTIMPL>.
*
*****************************************************************************/
STDMETHODIMP
CCal_GetProperty(PJOYRANGECONVERT this, REFGUID rguid, LPDIPROPHEADER pdiph)
{
HRESULT hres;
LPDIPROPRANGE pdiprg = CONTAINING_RECORD(pdiph, DIPROPRANGE, diph);
LPDIPROPDWORD pdipdw = CONTAINING_RECORD(pdiph, DIPROPDWORD, diph);
LPDIPROPCAL pdipcal = CONTAINING_RECORD(pdiph, DIPROPCAL , diph);
LPDIPROPCPOINTS pdipcps = CONTAINING_RECORD(pdiph, DIPROPCPOINTS , diph);
EnterProc(CCal::GetProperty, (_ "pxp", this, rguid, pdiph));
switch ((DWORD)(UINT_PTR)rguid) {
case (DWORD)(UINT_PTR)DIPROP_RANGE:
pdiprg->lMin = this->lMin;
pdiprg->lMax = this->lMax;
hres = S_OK;
break;
case (DWORD)(UINT_PTR)DIPROP_DEADZONE:
pdipdw->dwData = this->dwDz;
hres = S_OK;
break;
case (DWORD)(UINT_PTR)DIPROP_SATURATION:
pdipdw->dwData = this->dwSat;
hres = S_OK;
break;
case (DWORD)(UINT_PTR)DIPROP_CALIBRATIONMODE:
pdipdw->dwData = this->fRaw;
hres = S_OK;
break;
case (DWORD)(UINT_PTR)DIPROP_CALIBRATION:
pdipcal->lMin = this->dwPmin;
pdipcal->lMax = this->dwPmax;
pdipcal->lCenter = this->dwPc;
hres = S_OK;
break;
case (DWORD)(UINT_PTR)DIPROP_CPOINTS:
pdipcps->dwCPointsNum = this->dwCPointsNum;
memcpy( &pdipcps->cp, &this->cp, sizeof(this->cp) );
hres = S_OK;
break;
default:
hres = E_NOTIMPL;
break;
}
ExitOleProc();
return hres;
}
/*****************************************************************************
*
* @doc INTERNAL
*
* @method HRESULT | CCal | SetCalibration |
*
* The app (hopefully a control panel) is changing the
* calibration.
*
* @cwrap PJOYRANGECONVERT | this
*
* @parm IN LPCDIPROPINFO | ppropi |
*
* Information describing the property being set.
*
* @parm IN LPCDIPROPHEADER | pdiph |
*
* Points to the <t DIPROPHEADER> portion of a structure
* which depends on the property.
*
* @parm HKEY | hkType |
*
* Registry key to use calibration information.
*
* @returns
*
* <c S_OK> if the operation completed successfully.
*
* <c E_NOTIMPL> nothing happened. The caller will do
* the default thing in response to <c E_NOTIMPL>.
*
*****************************************************************************/
STDMETHODIMP
CCal_SetCalibration(PJOYRANGECONVERT this, LPCDIPROPINFO ppropi,
LPCDIPROPHEADER pdiph, HKEY hkType)
{
HRESULT hres;
#ifdef WINNT
if( ppropi->dwDevType == DIDFT_POV ) {
if( this->fPolledPOV ) {
LPCDIPROPCALPOV pdipcalpov = CONTAINING_RECORD(pdiph, DIPROPCALPOV, diph);
if (hkType) {
LPDIPOVCALIBRATION ppov;
HKEY hk;
/*
* We pun a DIPROPCALPOV as a DIPOVCALIBRATION.
*/
#define CheckField(f) \
CAssertF(FIELD_OFFSET(DIPROPCALPOV, l##f) - cbX(DIPROPHEADER) == \
FIELD_OFFSET(DIPOVCALIBRATION, l##f))
CheckField(Min);
CheckField(Max);
#undef CheckField
ppov = pvAddPvCb(pdipcalpov, cbX(DIPROPHEADER));
AssertF( !memcmp(ppov->lMin, pdipcalpov->lMin, cbX(DIPOVCALIBRATION)) );
AssertF( !memcmp(ppov->lMax, pdipcalpov->lMax, cbX(DIPOVCALIBRATION)) );
hres = CType_OpenIdSubkey(hkType, ppropi->dwDevType,
DI_KEY_ALL_ACCESS, &hk);
if (SUCCEEDED(hres)) {
/*
* All 0x0's for calibration is our cue to reset
* to default values.
*/
if( ppov->lMin[0] == ppov->lMin[1] == ppov->lMin[2] == ppov->lMin[3] == ppov->lMin[4] ==
ppov->lMax[0] == ppov->lMax[1] == ppov->lMax[2] == ppov->lMax[3] == ppov->lMax[4] == 0 )
{
RegDeleteValue(hk, TEXT("Calibration")) ;
} else
{
hres = JoyReg_SetValue(hk, TEXT("Calibration"),
REG_BINARY, ppov,
cbX(DIPOVCALIBRATION));
}
RegCloseKey(hk);
}
} else {
hres = S_FALSE;
}
if (SUCCEEDED(hres)) {
memcpy( this->lMinPOV, pdipcalpov->lMin, cbX(pdipcalpov->lMin) );
memcpy( this->lMaxPOV, pdipcalpov->lMax, cbX(pdipcalpov->lMax) );
}
} else {
hres = E_NOTIMPL;
}
} else
#endif
{
LPCDIPROPCAL pdipcal = CONTAINING_RECORD(pdiph, DIPROPCAL, diph);
if (hkType) {
LPDIOBJECTCALIBRATION pcal;
HKEY hk;
/*
* We pun a DIPROPCAL as a DIOBJECTCALIBRATION.
*/
#define CheckField(f) \
CAssertF(FIELD_OFFSET(DIPROPCAL, l##f) - cbX(DIPROPHEADER) == \
FIELD_OFFSET(DIOBJECTCALIBRATION, l##f))
CheckField(Min);
CheckField(Max);
CheckField(Center);
#undef CheckField
pcal = pvAddPvCb(pdipcal, cbX(DIPROPHEADER));
AssertF(pcal->lMin == pdipcal->lMin);
AssertF(pcal->lMax == pdipcal->lMax);
AssertF(pcal->lCenter == pdipcal->lCenter);
hres = CType_OpenIdSubkey(hkType, ppropi->dwDevType,
DI_KEY_ALL_ACCESS, &hk);
if (SUCCEEDED(hres)) {
/*
* All 0x0's for calibration is our cue to reset
* to default values.
*/
if( pcal->lMin == pcal->lMax &&
pcal->lCenter == pcal->lMax &&
pcal->lMax == 0x0 )
{
RegDeleteValue(hk, TEXT("Calibration")) ;
} else
{
hres = JoyReg_SetValue(hk, TEXT("Calibration"),
REG_BINARY, pcal,
cbX(DIOBJECTCALIBRATION));
}
RegCloseKey(hk);
}
} else {
hres = S_FALSE;
}
if (SUCCEEDED(hres)) {
this->dwPmin = pdipcal->lMin;
this->dwPmax = pdipcal->lMax;
this->dwPc = pdipcal->lCenter;
CCal_RecalcRange(this);
}
}
return hres;
}
/*****************************************************************************
*
* @doc INTERNAL
*
* @method HRESULT | CCal | SetProperty |
*
* Write a property to a calibration structure.
*
* The caller is permitted to pass a property that doesn't
* apply to calibration, in which case <c E_NOTIMPL>
* is returned, as it should be.
*
* @cwrap PJOYRANGECONVERT | this
*
* @parm IN LPCDIPROPINFO | ppropi |
*
* Information describing the property being set.
*
* @parm IN LPDIPROPHEADER | pdiph |
*
* Points to the <t DIPROPHEADER> portion of a structure
* which depends on the property.
*
* @parm HKEY | hkType |
*
* Registry key to use if setting calibration information.
*
* @returns
*
* <c S_OK> if the operation completed successfully.
*
* <c E_NOTIMPL> nothing happened. The caller will do
* the default thing in response to <c E_NOTIMPL>.
*
*****************************************************************************/
STDMETHODIMP
CCal_SetProperty(PJOYRANGECONVERT this, LPCDIPROPINFO ppropi,
LPCDIPROPHEADER pdiph, HKEY hkType)
{
HRESULT hres;
LPCDIPROPRANGE pdiprg = (PCV)pdiph;
LPCDIPROPDWORD pdipdw = (PCV)pdiph;
LPCDIPROPCPOINTS pdipcps = (PCV)pdiph;
LPDWORD pdw;
EnterProc(CCal::SetProperty, (_ "pxp", this, ppropi->pguid, pdiph));
switch ((DWORD)(UINT_PTR)ppropi->pguid) {
case (DWORD)(UINT_PTR)DIPROP_RANGE:
if (pdiprg->lMin <= pdiprg->lMax) {
this->lMin = pdiprg->lMin;
this->lMax = pdiprg->lMax;
this->lC = CCal_Midpoint(this->lMin, this->lMax);
CCal_RecalcRange(this);
SquirtSqflPtszV(sqflCal,
TEXT("CCal_SetProperty:DIPROP_RANGE: lMin: %08x, lMax: %08x"),
this->lMin, this->lMax );
hres = S_OK;
} else {
RPF("ERROR DIPROP_RANGE: lMin must be <= lMax");
hres = E_INVALIDARG;
}
break;
case (DWORD)(UINT_PTR)DIPROP_DEADZONE:
pdw = &this->dwDz;
goto finishfraction;
case (DWORD)(UINT_PTR)DIPROP_SATURATION:
pdw = &this->dwSat;
goto finishfraction;
finishfraction:;
if (pdipdw->dwData <= RANGEDIVISIONS) {
*pdw = pdipdw->dwData;
CCal_RecalcRange(this);
hres = S_OK;
} else {
RPF("SetProperty: Value must be 0 .. 10000");
hres = E_INVALIDARG;
}
break;
case (DWORD)(UINT_PTR)DIPROP_CALIBRATIONMODE:
if ((pdipdw->dwData & ~DIPROPCALIBRATIONMODE_VALID) == 0) {
this->fRaw = pdipdw->dwData;
hres = S_OK;
} else {
RPF("ERROR SetProperty: invalid calibration flags");
hres = E_INVALIDARG;
}
break;
case (DWORD)(UINT_PTR)DIPROP_CALIBRATION:
case (DWORD)(UINT_PTR)DIPROP_SPECIFICCALIBRATION:
hres = CCal_SetCalibration(this, ppropi, pdiph, hkType);
break;
case (DWORD)(UINT_PTR)DIPROP_CPOINTS:
this->dwCPointsNum = pdipcps->dwCPointsNum;
memcpy( &this->cp, &pdipcps->cp, sizeof(this->cp) );
hres = S_OK;
break;
default:
hres = E_NOTIMPL;
break;
}
ExitOleProc();
return hres;
}