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windows-server-2003/multimedia/directx/dinput/dx7/dll/didevef.c

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/*****************************************************************************
*
* DIDevEf.c
*
* Copyright (c) 1996 Microsoft Corporation. All Rights Reserved.
*
* Abstract:
*
* The part of IDirectInputDevice that worries about
* IDirectInputEffect.
*
*****************************************************************************/
#include "dinputpr.h"
#include "didev.h"
#ifdef IDirectInputDevice2Vtbl
/*****************************************************************************
*
* @doc INTERNAL
*
* @method HRESULT | CDIDev | CreateEffectDriver |
*
* If we don't already have one, create the effect
* driver shepherd
* so we can do force feedback goo. If we already
* have one, then there's nothing to do.
*
* @cwrap LPDIRECTINPUTDEVICE | lpDirectInputDevice
*
* @returns
* Returns a COM error code. The following error codes are
* intended to be illustrative and not necessarily comprehensive.
*
* <c DI_OK> = <c S_OK>: The operation completed successfully.
*
* <c DIERR_UNSUPPORTED> = <c E_NOTIMPL>: The device does
* not support force feeback, or there was an error loading
* the force feedback driver.
*
*****************************************************************************/
HRESULT INTERNAL
CDIDev_CreateEffectDriver(PDD this)
{
HRESULT hres;
CDIDev_EnterCrit(this);
if (this->pes) {
hres = S_OK;
} else {
hres = this->pdcb->lpVtbl->CreateEffect(this->pdcb, &this->pes);
/*
* If we have acquisition, then do a force feedback
* acquire to get everything back in sync.
*/
if (SUCCEEDED(hres) && this->fAcquired) {
CDIDev_FFAcquire(this);
hres = S_OK;
}
}
CDIDev_LeaveCrit(this);
return hres;
}
/*****************************************************************************
*
* @doc EXTERNAL
*
* @method HRESULT | IDirectInputDevice2 | CreateEffect |
*
* Creates and initializes an instance of an effect
* identified by the effect GUID.
*
* @cwrap LPDIRECTINPUTDEVICE | lpDirectInputDevice
*
* @parm IN REFGUID | rguid |
*
* The identity of the effect to be created. This can be
* a predefined effect GUID, or it can be a GUID obtained
* from <mf IDirectInputDevice2::EnumEffects>.
*
* @parm IN LPCDIEFFECT | lpeff |
*
* Pointer to a <t DIEFFECT> structure which provides
* parameters for the created effect. This parameter
* is optional. If it is <c NULL>, then the effect object
* is created without parameters. The application must
* call <mf IDirectInputEffect::SetParameters> to set
* the parameters of the effect before it can download
* the effect.
*
* @parm OUT LPDIRECTINPUTEFFECT * | ppdeff |
*
* Points to where to return
* the pointer to the <i IDirectInputEffect> interface, if successful.
*
* @parm IN LPUNKNOWN | punkOuter |
*
* Pointer to controlling unknown
* for OLE aggregation, or 0 if the interface is not aggregated.
* Most callers will pass 0.
*
* @returns
* Returns a COM error code. The following error codes are
* intended to be illustrative and not necessarily comprehensive.
*
* <c DI_OK> = <c S_OK>: The object was created and initialized
* successfully.
*
* <c DI_TRUNCATED>: The effect was successfully created,
* but some of the effect parameters were
* beyond the capabilities of the device and were truncated
* to the nearest valid value.
* Note that this is a success code, because the effect was
* successfully created.
*
* <c DIERR_DEVICENOTREG>: The effect GUID is not supported
* by the device.
*
* <c DIERR_DEVICEFULL>: The device is full.
*
* <c DIERR_INVALIDPARAM>: At least one of the parameters
* was invalid.
*
*
* @devnote
*
* Future versions of DirectX will allow <p lpeff> to be NULL,
* indicating that the effect should not be initialized.
* This is important to support effects which are created
* but which aren't downloaded until the app explicitly
* requests it.
*
*****************************************************************************/
/*
* Helper function which decides how many parameters to set,
* based on the incoming DIEFFECT structure.
*/
DWORD INLINE
CDIDev_DiepFromPeff(LPCDIEFFECT peff)
{
#if DIRECTINPUT_VERSION >= 0x0600
/*
* If we received a DIEFFECT_DX5, then we need to
* pass DIEP_ALLPARAMS_DX5 instead of DIEP_ALLPARAMS.
*/
return peff->dwSize < cbX(DIEFFECT_DX6)
? DIEP_ALLPARAMS_DX5
: DIEP_ALLPARAMS;
#else
return DIEP_ALLPARAMS;
#endif
}
STDMETHODIMP
CDIDev_CreateEffect(PV pdd, REFGUID rguid, LPCDIEFFECT peff,
LPDIRECTINPUTEFFECT *ppdeff, LPUNKNOWN punkOuter _THAT)
{
HRESULT hres;
EnterProcR(IDirectInputDevice2::CreateEffect,
(_ "pGpp", pdd, rguid, peff, punkOuter));
/*
* CDIEff_New will validate the ppdeff and punkOuter, but
* we need to validate ppdeff because we're going to
* shove a zero into it.
*
* We also need to check peff->dwSize as we need to test it
* before calling IDirectInputEffect_SetParameters.
*
* CDIEff_Initialize will validate the rguid.
*
* CDIEff_SetParameters will validate the peff.
*/
if (SUCCEEDED(hres = hresPvT(pdd)) &&
SUCCEEDED(hres = (peff && IsBadReadPtr(&peff->dwSize, cbX(peff->dwSize))) ? E_POINTER : S_OK) &&
SUCCEEDED(hres = hresFullValidPcbOut(ppdeff, cbX(*ppdeff), 4))) {
PDD this = _thisPv(pdd);
hres = CDIDev_CreateEffectDriver(this);
*ppdeff = 0; /* If CDIDev_CreateEffectDriver fails */
if (SUCCEEDED(hres)) {
hres = CDIEff_New(this, this->pes, punkOuter,
&IID_IDirectInputEffect, (PPV)ppdeff);
/*
* We assume that IDirectInputEffect is the primary interface.
*/
AssertF(fLimpFF(SUCCEEDED(hres),
(PV)*ppdeff == _thisPv(*ppdeff)));
if (SUCCEEDED(hres) && punkOuter == 0) {
LPDIRECTINPUTEFFECT pdeff = *ppdeff;
hres = IDirectInputEffect_Initialize(pdeff, g_hinst,
this->dwVersion, rguid);
if (SUCCEEDED(hres)) {
if (fLimpFF(peff,
SUCCEEDED(hres =
IDirectInputEffect_SetParameters(
pdeff, peff,
CDIDev_DiepFromPeff(peff))))) {
/*
* Woo-hoo, all is well.
*/
hres = S_OK;
} else {
Invoke_Release(ppdeff);
}
} else {
/*
* Error initializing.
*/
Invoke_Release(ppdeff);
}
} else {
/*
* Error creating, or object is aggregated and therefore
* should not be initialized.
*/
}
} else {
/*
* Error creating effect driver, or no effect driver.
*/
}
}
ExitOleProcPpv(ppdeff);
return hres;
}
/*****************************************************************************
*
* @doc INTERNAL
*
* @method HRESULT | CDIDev | SyncShepHandle |
*
* Synchronize the caller's <t SHEPHANDLE> with the
* <t SHEPHANDLE> of the parent. This lets
* dieshep.c know that the two are talking about the same thing.
*
* @cwrap PDD | this
*
* @returns
* Returns <c S_OK> if the tags already matched,
* or <c S_FALSE> if the tag changed. If the tag changed,
* then the handle inside the <t SHEPHANDLE> is zero'd.
*
* Note that <f CDIEff_DownloadWorker> assumes that the
* return value is exactly <c S_OK> or <c S_FALSE>.
*
*****************************************************************************/
STDMETHODIMP
CDIDev_SyncShepHandle(PDD this, PSHEPHANDLE psh)
{
HRESULT hres;
AssertF(CDIDev_InCrit(this));
if (psh->dwTag == this->sh.dwTag) {
hres = S_OK;
} else {
psh->dwTag = this->sh.dwTag;
psh->dwEffect = 0;
hres = S_FALSE;
}
return hres;
}
/*****************************************************************************
*
* @doc INTERNAL
*
* @method HRESULT | CDIDev | NotifyCreateEffect |
*
* Add the effect pointer to the list of effects that
* have been created by the device.
*
* The device critical section must not be owned by the
* calling thread.
*
* @cwrap PDD | this
*
* @parm IN struct CDIEff * | pdeff |
*
* The effect pointer to add.
*
* @returns
* Returns a COM error code. The following error codes are
* intended to be illustrative and not necessarily comprehensive.
*
* <c DI_OK> = <c S_OK>: Everything is okay.
*
* <c DIERR_OUTOFMEMORY> =
* <c E_OUTOFMEMORY>: No memory to record the effect.
*
*****************************************************************************/
HRESULT EXTERNAL
CDIDev_NotifyCreateEffect(PDD this, struct CDIEff *pdeff)
{
HRESULT hres;
AssertF(!CDIDev_InCrit(this));
CDIDev_EnterCrit(this);
hres = GPA_Append(&this->gpaEff, pdeff);
CDIDev_LeaveCrit(this);
/*
* Note that we must leave the device critical section
* before talking to the effect, in order to preserve
* the synchronization hierarchy.
*/
if (SUCCEEDED(hres)) {
Common_Hold(pdeff);
hres = S_OK;
}
return hres;
}
/*****************************************************************************
*
* @doc INTERNAL
*
* @method HRESULT | CDIDev | NotifyDestroyEffect |
*
* Remove the effect pointer from the list of effects that
* have been created by the device.
*
* The device critical section must not be owned by the
* calling thread.
*
* @cwrap PDD | this
*
* @parm IN struct CDIEff * | pdeff |
*
* The effect pointer to remove.
*
* @returns
*
* Returns a COM error code on failure.
*
* On success, returns the number of items left in the GPA.
*
*****************************************************************************/
HRESULT EXTERNAL
CDIDev_NotifyDestroyEffect(PDD this, struct CDIEff *pdeff)
{
HRESULT hres;
AssertF(!CDIDev_InCrit(this));
CDIDev_EnterCrit(this);
hres = GPA_DeletePtr(&this->gpaEff, pdeff);
CDIDev_LeaveCrit(this);
/*
* Note that we must leave the device critical section
* before talking to the effect, in order to preserve
* the synchronization hierarchy.
*
* Note that there you might think there's a deadlock here if
* effect A notifies us, and we in turn try to unhold
* effect B. But that won't happen, because we only
* unhold the effect that notified us.
*/
if (SUCCEEDED(hres)) {
Common_Unhold(pdeff);
hres = S_OK;
}
return hres;
}
/*****************************************************************************
*
* @doc INTERNAL
*
* @method HRESULT | CDIDev | FindEffectGUID |
*
* Look for an effect <t GUID>; if found, fetch associated
* information.
*
* @cwrap LPDIRECTINPUTDEVICE | lpDirectInputDevice
*
* @parm REFGUID | rguid |
*
* Effect <t GUID> to locate.
*
* @parm PEFFECTMAPINFO | pemi |
*
* Receives associated information for the effect.
* We must return a copy instead of a pointer, because
* the original might disappear suddenly if the
* device gets <mf CDIDev::Reset>().
*
* @returns
*
* Returns a COM error code. The following error codes are
* intended to be illustrative and not necessarily comprehensive.
*
* <c DI_OK> = <c S_OK>: The operation completed successfully.
*
* <c DIERR_OUTOFMEMORY> = <c E_OUTOFMEMORY>: Out of memory.
*
* <c DIERR_DEVICENOTREG> = <c REGDB_E_CLASSNOTREG>:
* The effect is not supported by the device.
*
*****************************************************************************/
STDMETHODIMP
CDIDev_FindEffectGUID_(PDD this, REFGUID rguid, PEFFECTMAPINFO pemi,
LPCSTR s_szProc, int iarg)
{
UINT iemi;
HRESULT hres;
D(iarg);
CDIDev_EnterCrit(this);
for (iemi = 0; iemi < this->cemi; iemi++) {
if (IsEqualGUID(rguid, &this->rgemi[iemi].guid)) {
*pemi = this->rgemi[iemi];
hres = S_OK;
goto found;
}
}
RPF("%s: Effect not supported by device", s_szProc);
hres = DIERR_DEVICENOTREG; /* Effect not found */
found:;
CDIDev_LeaveCrit(this);
return hres;
}
/*****************************************************************************
*
* @doc INTERNAL
*
* @method void | CDIDev | GetEffectInfoHelper |
*
* Transfer information from an
* <t EFFECTMAPINFO> to a <t DIEFFECTINFOW>.
*
* @cwrap PDD | this
*
* @parm LPDIEFFECTINFOW | pdeiW |
*
* Destination.
*
* @parm PCEFFECTMAPINFO | pemi |
*
* Source.
*
*****************************************************************************/
void INTERNAL
CDIDev_GetEffectInfoHelper(PDD this, LPDIEFFECTINFOW pdeiW,
PCEFFECTMAPINFO pemi)
{
AssertF(pdeiW->dwSize == cbX(*pdeiW));
pdeiW->guid = pemi->guid;
pdeiW->dwEffType = pemi->attr.dwEffType;
pdeiW->dwStaticParams = pemi->attr.dwStaticParams;
pdeiW->dwDynamicParams = pemi->attr.dwDynamicParams;
CAssertF(cbX(pdeiW->tszName) == cbX(pemi->wszName));
CopyMemory(pdeiW->tszName, pemi->wszName, cbX(pemi->wszName));
}
/*****************************************************************************
*
* @doc EXTERNAL
*
* @method HRESULT | IDirectInputDevice2 | EnumEffects |
*
* Enumerates all of the effects supported by the force
* feedback system on the device. The enumerated GUIDs
* may represent predefined effects as well as effects
* peculiar to the device manufacturer.
*
* An application
* can use the <e DIEFFECTINFO.dwEffType> field of the
* <t DIEFFECTINFO> structure to obtain general
* information about the effect, such as its type and
* which envelope and condition parameters are supported
* by the effect.
*
* In order to exploit an effect to its fullest,
* you must contact the device manufacturer to obtain
* information on the semantics of the effect and its
* effect-specific parameters.
*
* @cwrap LPDIRECTINPUTDEVICE | lpDirectInputDevice
*
* @parm LPDIENUMEFFECTSCALLBACK | lpCallback |
*
* Points to an application-defined callback function.
* For more information, see the description of the
* <f DIEnumEffectsProc> callback function.
*
* @parm LPVOID | pvRef |
*
* Specifies a 32-bit application-defined
* value to be passed to the callback function. This value
* may be any 32-bit value; it is prototyped as an <t LPVOID>
* for convenience.
*
* @parm DWORD | dwEffType |
*
* Effect type filter. If <c DIEFT_ALL>, then all
* effect types are
* enumerated. Otherwise, it is a <c DIEFT_*> value,
* indicating the device type that should be enumerated.
*
* @returns
*
* Returns a COM error code. The following error codes are
* intended to be illustrative and not necessarily comprehensive.
*
* <c DI_OK> = <c S_OK>: The operation completed successfully.
* Note that if the callback stops the enumeration prematurely,
* the enumeration is considered to have succeeded.
*
* <c DIERR_INVALIDPARAM> = <c E_INVALIDARG>: The
* <p fl> parameter contains invalid flags, or the callback
* procedure returned an invalid status code.
*
* @cb BOOL CALLBACK | DIEnumEffectsProc |
*
* An application-defined callback function that receives
* device effects as a result of a call to the
* <om IDirectInputDevice2::EnumEffects> method.
*
* @parm IN LPCDIEFFECTINFO | pdei |
*
* A <t DIEFFECTINFO> structure that describes the enumerated
* effect.
*
* @parm IN OUT LPVOID | pvRef |
*
* Specifies the application-defined value given in the
* <mf IDirectInputDevice2::EnumEffects> function.
*
* @returns
*
* Returns <c DIENUM_CONTINUE> to continue the enumeration
* or <c DIENUM_STOP> to stop the enumeration.
*
*//**************************************************************************
*
* In DEBUG/RDEBUG, if the callback returns a bogus value, raise
* a validation exception.
*
*****************************************************************************/
STDMETHODIMP
CDIDev_EnumEffectsW
(PV pddW, LPDIENUMEFFECTSCALLBACKW pecW, PV pvRef, DWORD dwEffType)
{
HRESULT hres;
EnterProcR(IDirectInputDevice2W::EnumEffects,
(_ "pppx", pddW, pecW, pvRef, dwEffType));
if (SUCCEEDED(hres = hresPvW(pddW)) &&
SUCCEEDED(hres = hresFullValidPfn(pecW, 1)) &&
SUCCEEDED(hres = hresFullValidFl(dwEffType, DIEFT_ENUMVALID, 3))) {
PDD this = _thisPvNm(pddW, ddW);
PEFFECTMAPINFO rgemi;
UINT iemi, cemi;
/*
* We need to make a private copy of the GUID list,
* because somebody else might suddenly Reset() the
* device and mess up everything.
*
* Indeed, it might've been Reset() during this comment!
* That's why we need to create the private copy
* while under the critical section.
*/
CDIDev_EnterCrit(this);
cemi = this->cemi;
hres = AllocCbPpv(cbCxX(this->cemi, EFFECTMAPINFO), &rgemi);
if (SUCCEEDED(hres)) {
if (this->cemi) {
CopyMemory(rgemi, this->rgemi,
cbCxX(this->cemi, EFFECTMAPINFO));
}
}
CDIDev_LeaveCrit(this);
if (SUCCEEDED(hres)) {
for (iemi = 0; iemi < cemi; iemi++) {
PEFFECTMAPINFO pemi = &rgemi[iemi];
if (fLimpFF(dwEffType,
dwEffType == LOBYTE(pemi->attr.dwEffType))) {
BOOL fRc;
DIEFFECTINFOW deiW;
deiW.dwSize = cbX(deiW);
CDIDev_GetEffectInfoHelper(this, &deiW, pemi);
fRc = Callback(pecW, &deiW, pvRef);
switch (fRc) {
case DIENUM_STOP: goto enumdoneok;
case DIENUM_CONTINUE: break;
default:
RPF("%s: Invalid return value from callback", s_szProc);
ValidationException();
break;
}
}
}
enumdoneok:;
FreePpv(&rgemi);
hres = S_OK;
}
}
ExitOleProc();
return hres;
}
/*****************************************************************************
*
* @doc INTERNAL
*
* @method HRESULT | IDirectInputDevice2A | EnumEffectsCallbackA |
*
* Custom callback that wraps
* <mf IDirectInputDevice2::EnumObjects> which
* translates the UNICODE string to an ANSI string.
*
* @parm IN LPCDIEFFECTINFOA | pdoiA |
*
* Structure to be translated to ANSI.
*
* @parm IN LPVOID | pvRef |
*
* Pointer to <t struct ENUMEFFECTSINFO> which describes
* the original callback.
*
* @returns
*
* Returns whatever the original callback returned.
*
*****************************************************************************/
typedef struct ENUMEFFECTSINFO {
LPDIENUMEFFECTSCALLBACKA pecA;
PV pvRef;
} ENUMEFFECTSINFO, *PENUMEFFECTSINFO;
BOOL CALLBACK
CDIDev_EnumEffectsCallbackA(LPCDIEFFECTINFOW pdeiW, PV pvRef)
{
PENUMEFFECTSINFO peei = pvRef;
BOOL fRc;
DIEFFECTINFOA deiA;
EnterProc(CDIObj_EnumObjectsCallbackA,
(_ "GxWp", &pdeiW->guid,
&pdeiW->dwEffType,
pdeiW->tszName, pvRef));
deiA.dwSize = cbX(deiA);
EffectInfoWToA(&deiA, pdeiW);
fRc = peei->pecA(&deiA, peei->pvRef);
ExitProcX(fRc);
return fRc;
}
/*****************************************************************************
*
* @doc INTERNAL
*
* @method HRESULT | IDirectInputDevice2A | EnumEffects |
*
* Enumerate the effects available on a device, in ANSI.
* See <mf IDirectInputDevice2::EnumEffects> for more information.
*
* @cwrap LPDIRECTINPUTDEVICE | lpDirectInputDevice
*
* @parm IN LPDIENUMEFFECTSCALLBACKA | lpCallback |
*
* Same as <mf IDirectInputDevice2W::EnumObjects>, except in ANSI.
*
* @parm IN LPVOID | pvRef |
*
* Same as <mf IDirectInputDevice2W::EnumObjects>.
*
* @parm IN DWORD | fl |
*
* Same as <mf IDirectInputDevice2W::EnumObjects>.
*
*****************************************************************************/
STDMETHODIMP
CDIDev_EnumEffectsA
(PV pddA, LPDIENUMEFFECTSCALLBACKA pecA, PV pvRef, DWORD dwEffType)
{
HRESULT hres;
EnterProcR(IDirectInputDevice2A::EnumEffects,
(_ "pppx", pddA, pecA, pvRef, dwEffType));
/*
* EnumEffectsW will validate the rest.
*/
if (SUCCEEDED(hres = hresPvA(pddA)) &&
SUCCEEDED(hres = hresFullValidPfn(pecA, 1))) {
ENUMEFFECTSINFO eei = { pecA, pvRef };
PDD this = _thisPvNm(pddA, ddA);
hres = CDIDev_EnumEffectsW(&this->ddW, CDIDev_EnumEffectsCallbackA,
&eei, dwEffType);
}
ExitOleProcR();
return hres;
}
/*****************************************************************************
*
* @doc EXTERNAL
*
* @method HRESULT | IDirectInputDevice2 | GetEffectInfo |
*
* Obtains information about an effect.
*
* @cwrap LPDIRECTINPUTDEVICE | lpDirectInputDevice
*
* @parm OUT LPDIEFFECTINFO | pdei |
*
* Receives information about the effect.
* The caller "must" initialize the <e DIEFFECTINFO.dwSize>
* field before calling this method.
*
* @parm REFGUID | rguid |
*
* Identifies the effect for which information is being requested.
*
* @returns
*
* Returns a COM error code. The following error codes are
* intended to be illustrative and not necessarily comprehensive.
*
* <c DI_OK> = <c S_OK>: The operation completed successfully.
*
* <c DIERR_INVALIDPARAM> = <c E_INVALIDARG>: One or more
* parameters was invalid.
*
* <c DIERR_DEVICENOTREG>: The effect GUID does not exist
* on the current device.
*
*****************************************************************************/
STDMETHODIMP
CDIDev_GetEffectInfoW(PV pddW, LPDIEFFECTINFOW pdeiW, REFGUID rguid)
{
HRESULT hres;
EnterProcR(IDirectInputDevice2W::GetEffectInfo,
(_ "ppG", pddW, pdeiW, rguid));
if (SUCCEEDED(hres = hresPvW(pddW)) &&
SUCCEEDED(hres = hresFullValidWritePxCb(pdeiW,
DIEFFECTINFOW, 1))) {
PDD this = _thisPvNm(pddW, ddW);
EFFECTMAPINFO emi;
if (SUCCEEDED(hres = CDIDev_FindEffectGUID(this, rguid, &emi, 2))) {
CDIDev_GetEffectInfoHelper(this, pdeiW, &emi);
hres = S_OK;
}
if (FAILED(hres)) {
ScrambleBuf(&pdeiW->guid,
cbX(DIEFFECTINFOW) - FIELD_OFFSET(DIEFFECTINFOW, guid));
}
}
ExitOleProcR();
return hres;
}
/*****************************************************************************
*
* @doc INTERNAL
*
* @method HRESULT | IDirectInputDevice2A | GetEffectInfo |
*
* ANSI version of same.
*
* @cwrap LPDIRECTINPUTDEVICE | lpDirectInputDevice
*
* @parm OUT LPDIEFFECTINFO | pdei |
*
* Receives information about the effect.
* The caller "must" initialize the <e DIEFFECTINFO.dwSize>
* field before calling this method.
*
* @parm REFGUID | rguid |
*
* Identifies the effect for which information is being requested.
*
* @returns
*
* Returns a COM error code. The following error codes are
* intended to be illustrative and not necessarily comprehensive.
*
* <c DI_OK> = <c S_OK>: The operation completed successfully.
*
* <c DIERR_INVALIDPARAM> = <c E_INVALIDARG>: One or more
* parameters was invalid.
*
* <c DIERR_DEVICENOTREG>: The effect GUID does not exist
* on the current device.
*
*****************************************************************************/
STDMETHODIMP
CDIDev_GetEffectInfoA(PV pddA, LPDIEFFECTINFOA pdeiA, REFGUID rguid)
{
HRESULT hres;
EnterProcR(IDirectInputDevice2A::GetEffectInfo,
(_ "ppG", pddA, pdeiA, rguid));
if (SUCCEEDED(hres = hresPvA(pddA)) &&
SUCCEEDED(hres = hresFullValidWritePxCb(pdeiA,
DIEFFECTINFOA, 1))) {
PDD this = _thisPvNm(pddA, ddA);
DIEFFECTINFOW deiW;
deiW.dwSize = cbX(deiW);
hres = CDIDev_GetEffectInfoW(&this->ddW, &deiW, rguid);
if (SUCCEEDED(hres)) {
EffectInfoWToA(pdeiA, &deiW);
hres = S_OK;
} else {
ScrambleBuf(&pdeiA->guid,
cbX(DIEFFECTINFOA) - FIELD_OFFSET(DIEFFECTINFOA, guid));
}
}
ExitOleProcR();
return hres;
}
/*****************************************************************************
*
* @doc EXTERNAL
*
* @method HRESULT | IDirectInputDevice2 | GetForceFeedbackState |
*
* Retrieves the state of the device's force feedback system.
* The device must be acquired for this method to succeed.
*
* @cwrap LPDIRECTINPUTDEVICE | lpDirectInputDevice
*
* @parm LPDWORD | pdwOut |
*
* Receives a <t DWORD> of flags which describe the current
* state of the device's force feedback system.
*
* The value is a combination of zero or more <c DIGFFS_*>
* flags.
*
* Note that future versions of DirectInput may define
* additional flags. Applications should ignore any flags
* that are not currently defined.
*
* @returns
*
* Returns a COM error code. The following error codes are
* intended to be illustrative and not necessarily comprehensive.
*
* <c DI_OK> = <c S_OK>: The operation completed successfully.
*
* <c DIERR_INVALIDPARAM> = <c E_INVALIDARG>: The
* <p pdwOut> parameter is not a valid pointer.
*
* <c DIERR_INPUTLOST>: Acquisition has been lost.
*
* <c DIERR_NOTEXCLUSIVEACQUIRED>: The device is acquired,
* but not exclusively, or the device is not acquired
* at all.
*
* <c DIERR_UNSUPPORTED> = <c E_NOTIMPL>: The device
* does not support force feedback.
*
*****************************************************************************/
STDMETHODIMP
CDIDev_GetForceFeedbackState(PV pdd, LPDWORD pdwOut _THAT)
{
HRESULT hres;
EnterProcR(IDirectInputDevice2::GetForceFeedbackState, (_ "p", pdd));
if (SUCCEEDED(hres = hresPvT(pdd)) &&
SUCCEEDED(hres = hresFullValidPcbOut(pdwOut, cbX(*pdwOut), 1))) {
PDD this = _thisPv(pdd);
/*
* I just know people aren't going to check the error code,
* so don't let them see garbage.
*/
*pdwOut = 0;
hres = CDIDev_CreateEffectDriver(this);
if (SUCCEEDED(hres)) {
DIDEVICESTATE ds;
CDIDev_EnterCrit(this);
/*
* Note that it isn't necessary to check
* CDIDev_IsExclAcquired(), because the effect shepherd
* will deny us access to a device we don't own.
*
* ISSUE-2001/03/29-timgill need to handle DIERR_INPUTLOST case
*/
ds.dwSize = cbX(ds);
hres = this->pes->lpVtbl->
GetForceFeedbackState(this->pes, &this->sh, &ds);
/*
* We put as many flags in matching places in
* DISFFC_* and DIGFFS_* because I just know
* app writers are going to mess it up.
*/
if (SUCCEEDED(hres)) {
CAssertF(DISFFC_RESET == DIGFFS_EMPTY);
CAssertF(DISFFC_STOPALL == DIGFFS_STOPPED);
CAssertF(DISFFC_PAUSE == DIGFFS_PAUSED);
CAssertF(DISFFC_SETACTUATORSON == DIGFFS_ACTUATORSON);
CAssertF(DISFFC_SETACTUATORSOFF == DIGFFS_ACTUATORSOFF);
*pdwOut = ds.dwState;
hres = S_OK;
}
CDIDev_LeaveCrit(this);
}
ScrambleBit(pdwOut, DIGFFS_RANDOM);
}
/*
* Can't use ExitOleProcPpv here because pdwOut might have
* DIFFS_RANDOM set in it, even on error.
*/
ExitOleProc();
return hres;
}
/*****************************************************************************
*
* @doc EXTERNAL
*
* @method HRESULT | IDirectInputDevice2 | SendForceFeedbackCommand |
*
* Sends a command to the the device's force feedback system.
* The device must be acquired for this method to succeed.
*
* @cwrap LPDIRECTINPUTDEVICE | lpDirectInputDevice
*
* @parm DWORD | dwCommand |
*
* One of the <c DISFFC_*> values indicating
* the command to send.
*
* @returns
*
* Returns a COM error code. The following error codes are
* intended to be illustrative and not necessarily comprehensive.
*
* <c DI_OK> = <c S_OK>: The operation completed successfully.
*
* <c DIERR_INVALIDPARAM> = <c E_INVALIDARG>: The
* <p dwFlags> parameter is invalid.
*
* <c DIERR_INPUTLOST>: Acquisition has been lost.
*
* <c DIERR_NOTEXCLUSIVEACQUIRED>: The device is acquired,
* but not exclusively, or the device is not acquired
* at all.
*
* <c DIERR_UNSUPPORTED> = <c E_NOTIMPL>: The device
* does not support force feedback.
*
*****************************************************************************/
HRESULT INLINE
CDIDev_SendForceFeedbackCommand_IsValidCommand(DWORD dwCmd)
{
HRESULT hres;
RD(static char s_szProc[] = "IDirectInputDevice2::SendForceFeedbackCommand");
/*
* dwCmd must not be zero (therefore at least one bit set).
* !(dwCmd & (dwCmd - 1)) checks that at most one bit is set.
* (dwCmd & ~DISFFC_VALID) checks that no bad bits are set.
*/
if (dwCmd && !(dwCmd & ~DISFFC_VALID) && !(dwCmd & (dwCmd - 1))) {
hres = S_OK;
} else {
RPF("ERROR %s: arg %d: invalid command", s_szProc, 1);
hres = E_INVALIDARG;
}
return hres;
}
STDMETHODIMP
CDIDev_SendForceFeedbackCommand(PV pdd, DWORD dwCmd _THAT)
{
HRESULT hres;
EnterProcR(IDirectInputDevice2::SendForceFeedbackCommand,
(_ "px", pdd, dwCmd));
if (SUCCEEDED(hres = hresPvT(pdd)) &&
SUCCEEDED(hres = CDIDev_SendForceFeedbackCommand_IsValidCommand
(dwCmd))) {
PDD this = _thisPv(pdd);
hres = CDIDev_CreateEffectDriver(this);
if (SUCCEEDED(hres)) {
CDIDev_EnterCrit(this);
/*
* Note that it isn't necessary to check
* CDIDev_IsExclAcquired(), because the effect shepherd
* will deny us access to a device we don't own.
*
* ISSUE-2001/03/29-timgill need to handle DIERR_INPUTLOST case
*/
hres = this->pes->lpVtbl->
SendForceFeedbackCommand(this->pes,
&this->sh, dwCmd);
if (SUCCEEDED(hres) && (dwCmd & DISFFC_RESET)) {
/*
* Re-establish the gain after a reset.
*/
CDIDev_RefreshGain(this);
}
CDIDev_LeaveCrit(this);
}
}
ExitOleProc();
return hres;
}
/*****************************************************************************
*
* @doc EXTERNAL
*
* @method HRESULT | IDirectInputDevice2 | EnumCreatedEffectObjects |
*
* Enumerates all of the currently created effect objects for
* this device. Effect objects created via
* <mf IDirectInputDevice::CreateEffect>
* are enumerated.
*
* Note that results will be unpredictable if you destroy
* or create an effect object while an enumeration is in progress.
* The sole exception is that the callback function itself
* <f DIEnumCreatedEffectObjectsProc> is permitted to
* <mf IDirectInputEffect::Release> the effect that it is
* passed as its first parameter.
*
* @cwrap LPDIRECTINPUTDEVICE | lpDirectInputDevice
*
* @parm IN LPDIENUMCREATEDEFFECTOBJECTSCALLBACK | lpCallback |
*
* Callback function.
*
* @parm IN LPVOID | pvRef |
*
* Reference data (context) for callback.
*
* @parm IN DWORD | fl |
*
* No flags are currently defined. This parameter must be 0.
*
* @returns
*
* Returns a COM error code. The following error codes are
* intended to be illustrative and not necessarily comprehensive.
*
* Returns a COM error code. The following error codes are
* intended to be illustrative and not necessarily comprehensive.
*
* <c DI_OK> = <c S_OK>: The operation completed successfully.
* Note that if the callback stops the enumeration prematurely,
* the enumeration is considered to have succeeded.
*
* <c DIERR_INVALIDPARAM> = <c E_INVALIDARG>: The
* <p fl> parameter contains invalid flags, or the callback
* procedure returned an invalid status code.
*
* @cb BOOL CALLBACK | DIEnumCreatedEffectObjectsProc |
*
* An application-defined callback function that receives
* IDirectInputEffect effect objects as a result of a call to the
* <om IDirectInputDevice2::EnumCreatedEffects> method.
*
* @parm LPDIRECTINPUTEFFECT | peff |
*
* A pointer to an effect object that has been created.
*
* @parm LPVOID | pvRef |
* Specifies the application-defined value given in the
* <mf IDirectInputDevice2::EnumCreatedEffectObjects> function.
*
* @returns
*
* Returns <c DIENUM_CONTINUE> to continue the enumeration
* or <c DIENUM_STOP> to stop the enumeration.
*
*****************************************************************************/
STDMETHODIMP
CDIDev_EnumCreatedEffectObjects(PV pdd,
LPDIENUMCREATEDEFFECTOBJECTSCALLBACK pec,
LPVOID pvRef, DWORD fl _THAT)
{
HRESULT hres;
EnterProcR(IDirectInputDevice2::EnumCreatedEffects,
(_ "ppx", pdd, pec, fl));
if (SUCCEEDED(hres = hresPvT(pdd)) &&
SUCCEEDED(hres = hresFullValidPfn(pec, 1)) &&
SUCCEEDED(hres = hresFullValidFl(fl, DIECEFL_VALID, 3))) {
PDD this = _thisPv(pdd);
GPA gpaEff;
CDIDev_EnterCrit(this);
/*
* We must snapshot the list to make sure we don't run
* with a stale handle later. Actually, we also need
* to Hold the guys as we transfer them across so they
* won't vanish until we're ready.
*
* Note: It is important that we Hold and not AddRef,
* because AddRef will talk to the controlling unknown,
* which is not safe to do while holding a critical
* section.
*/
hres = GPA_Clone(&gpaEff, &this->gpaEff);
if (SUCCEEDED(hres)) {
int ipv;
for (ipv = 0; ipv < gpaEff.cpv; ipv++) {
Common_Hold(gpaEff.rgpv[ipv]);
}
}
CDIDev_LeaveCrit(this);
if (SUCCEEDED(hres)) {
int ipv;
for (ipv = 0; ipv < gpaEff.cpv; ipv++) {
BOOL fRc;
fRc = Callback(pec, gpaEff.rgpv[ipv], pvRef);
switch (fRc) {
case DIENUM_STOP: goto enumdoneok;
case DIENUM_CONTINUE: break;
default:
RPF("%s: Invalid return value from callback",
s_szProc);
ValidationException();
break;
}
}
enumdoneok:;
for (ipv = 0; ipv < gpaEff.cpv; ipv++) {
Common_Unhold(gpaEff.rgpv[ipv]);
}
GPA_Term(&gpaEff);
}
hres = S_OK;
}
ExitOleProc();
return hres;
}
/*****************************************************************************
*
* @doc INTERNAL
*
* @method HRESULT | CDIDev | GetLoad |
*
* Retrieve the memory load setting for the device.
*
* @cwrap PDD | this
*
* @parm LPDWORD | pdwLoad |
*
* Receives memory load.
*
* @returns
*
* Returns a COM error code. The following error codes are
* intended to be illustrative and not necessarily comprehensive.
*
* <c DI_OK> = <c S_OK>: The operation completed successfully.
*
* <c DIERR_NOTEXCLUSIVEACQUIRED>: The device is acquired,
* but not exclusively, or the device is not acquired
* at all.
*
* <c DIERR_UNSUPPORTED> = <c E_NOTIMPL>: The device
* does not support force feedback.
*
*****************************************************************************/
STDMETHODIMP
CDIDev_GetLoad(PDD this, LPDWORD pdwOut)
{
HRESULT hres;
EnterProc(CDIDev_GetLoad, (_ "p", this));
hres = CDIDev_CreateEffectDriver(this);
if (SUCCEEDED(hres)) {
DIDEVICESTATE ds;
CDIDev_EnterCrit(this);
/*
* Note that it isn't necessary to check
* CDIDev_IsExclAcquired(), because the effect shepherd
* will deny us access to a device we don't own.
*
* ISSUE-2001/03/29-timgill need to handle DIERR_INPUTLOST case
*/
ds.dwSize = cbX(ds);
hres = this->pes->lpVtbl->
GetForceFeedbackState(this->pes, &this->sh, &ds);
*pdwOut = ds.dwLoad;
CDIDev_LeaveCrit(this);
}
/*
* Can't use ExitOleProcPpv here because pdwOut is garbage on error.
*/
ExitOleProc();
return hres;
}
/*****************************************************************************
*
* @doc INTERNAL
*
* @method HRESULT | CDIDev | Escape |
*
* Send a hardware-specific command to the driver.
*
* @cwrap PDD | this
*
* @parm LPDIEFFESCAPE | pesc |
*
* Pointer to a <t DIEFFESCAPE> structure which describes
* the command to be sent. On success, the
* <e DIEFFESCAPE.cbOutBuffer> field contains the number
* of bytes of the output buffer actually used.
*
* @returns
*
* Returns a COM error code. The following error codes are
* intended to be illustrative and not necessarily comprehensive.
*
* <c DI_OK> = <c S_OK>: The operation completed successfully.
*
* <c DIERR_NOTEXCLUSIVEACQUIRED>: The device is acquired,
* but not exclusively, or the device is not acquired
* at all.
*
* <c DIERR_UNSUPPORTED> = <c E_NOTIMPL>: The device
* does not support force feedback.
*
*****************************************************************************/
STDMETHODIMP
CDIDev_Escape(PV pdd, LPDIEFFESCAPE pesc _THAT)
{
HRESULT hres;
EnterProcR(IDirectInputDevice2::Escape, (_ "p", pdd));
if (SUCCEEDED(hres = hresPvT(pdd)) &&
SUCCEEDED(hres = hresFullValidPesc(pesc, 1))) {
PDD this = _thisPv(pdd);
AssertF(this->sh.dwEffect == 0);
hres = CDIDev_CreateEffectDriver(this);
if (SUCCEEDED(hres)) {
CDIDev_EnterCrit(this);
/*
* Note that it isn't necessary to check
* CDIDev_IsExclAcquired(), because the effect shepherd
* will deny us access to a device we don't own.
*
* ISSUE-2001/03/29-timgill Need to handle DIERR_INPUTLOST case
*/
hres = IDirectInputEffectShepherd_DeviceEscape(
this->pes, &this->sh, pesc);
CDIDev_LeaveCrit(this);
}
}
ExitOleProcR();
return hres;
}
/*****************************************************************************
*
* @doc INTERNAL
*
* @method HRESULT | CDIDev | RefreshGain |
*
* Set the device gain setting appropriately.
*
* The device shepherd will take care of muxing in the
* global gain.
*
* @cwrap PDD | this
*
* @returns
*
* Returns a COM error code. The following error codes are
* intended to be illustrative and not necessarily comprehensive.
*
* <c DI_OK> = <c S_OK>: The operation completed successfully.
*
* <c DIERR_NOTEXCLUSIVEACQUIRED>: The device is acquired,
* but not exclusively, or the device is not acquired
* at all.
*
* <c DIERR_UNSUPPORTED> = <c E_NOTIMPL>: The device
* does not support force feedback.
*
*****************************************************************************/
STDMETHODIMP
CDIDev_RefreshGain(PDD this)
{
HRESULT hres;
AssertF(CDIDev_InCrit(this));
if (this->pes) {
hres = this->pes->lpVtbl->SetGain(this->pes, &this->sh, this->dwGain);
} else {
hres = S_OK;
}
return hres;
}
/*****************************************************************************
*
* @doc INTERNAL
*
* @method void | CDIDev | SnapOneEffect |
*
* Read one force feedback effect key and record the
* information stored therein. We also tally the
* flag into the <e CDIDev.didcFF> so we can return
* the global flags from <mf IDirectInputDevice::GetCapabilities>.
*
* The <e CDIDev.rgemi> field already points to a
* preallocated array
* of <t EFFECTMAPINFO> structures, and
* the <e CDIDev.cemi> field contains the number
* of entries in that array which are already in use.
*
* @cwrap PDD | this
*
* @parm HKEY | hkEffects |
*
* The registry key containing the effects.
*
* @parm DWORD | iKey |
*
* Index number of the subkey.
*
* @returns
*
* None.
*
* If the specified subkey is damaged, it is skipped.
*
*****************************************************************************/
void INTERNAL
CDIDev_SnapOneEffect(PDD this, HKEY hkEffects, DWORD ihk)
{
TCHAR tszGuid[ctchGuid];
LONG lRc;
PEFFECTMAPINFO pemi;
/*
* Make sure that DIEFT_* and DIDC_* agree where they overlap.
*/
CAssertF(DIEFT_FORCEFEEDBACK == DIDC_FORCEFEEDBACK);
CAssertF(DIEFT_FFATTACK == DIDC_FFATTACK);
CAssertF(DIEFT_FFFADE == DIDC_FFFADE);
CAssertF(DIEFT_SATURATION == DIDC_SATURATION);
CAssertF(DIEFT_POSNEGCOEFFICIENTS == DIDC_POSNEGCOEFFICIENTS);
CAssertF(DIEFT_POSNEGSATURATION == DIDC_POSNEGSATURATION);
pemi = &this->rgemi[this->cemi];
/*
* First get the GUID for the effect.
*/
lRc = RegEnumKey(hkEffects, ihk, tszGuid, cA(tszGuid));
if (lRc == ERROR_SUCCESS &&
ParseGUID(&pemi->guid, tszGuid)) {
HKEY hk;
/*
* Note that we don't need to check for duplicates.
* The registry itself does not allow two keys to have
* the same name.
*/
lRc = RegOpenKeyEx(hkEffects, tszGuid, 0, KEY_QUERY_VALUE, &hk);
if (lRc == ERROR_SUCCESS) {
DWORD cb;
cb = cbX(pemi->wszName);
lRc = RegQueryStringValueW(hk, 0, pemi->wszName, &cb);
if (lRc == ERROR_SUCCESS) {
HRESULT hres;
hres = JoyReg_GetValue(hk, TEXT("Attributes"), REG_BINARY,
&pemi->attr, cbX(pemi->attr));
if (SUCCEEDED(hres) &&
(pemi->attr.dwCoords & DIEFF_COORDMASK)) {
this->didcFF |= (pemi->attr.dwEffType & DIEFT_VALIDFLAGS);
this->cemi++;
}
}
RegCloseKey(hk);
}
}
}
/*****************************************************************************
*
* @doc INTERNAL
*
* @method HRESULT | CDIDev | InitFF |
*
* Initialize the force-feedback portion of the device.
*
* Collect the force feedback attributes.
*
* Snapshot the list of force feedback effects.
*
* @cwrap LPDIRECTINPUTDEVICE | lpDirectInputDevice
*
* @returns
*
* Returns a COM error code. The following error codes are
* intended to be illustrative and not necessarily comprehensive.
*
* <c DI_OK> = <c S_OK>: The operation completed successfully.
*
* <c DIERR_OUTOFMEMORY> = <c E_OUTOFMEMORY>: Out of memory.
*
* <c DIERR_UNSUPPORTED> = <c E_NOTIMPL>: The device
* does not support force feedback.
*
*****************************************************************************/
STDMETHODIMP
CDIDev_InitFF(PDD this)
{
HKEY hkFF;
HRESULT hres;
EnterProcI(CDIDev_InitFF, (_ "p", this));
AssertF(this->didcFF == 0);
hres = this->pdcb->lpVtbl->GetFFConfigKey(this->pdcb,
KEY_QUERY_VALUE | KEY_ENUMERATE_SUB_KEYS,
&hkFF);
if( hres == S_FALSE )
{
/*
* Try causing the driver to be loaded so that it can initialize
* the effects in the registry before we proceed.
*
* Need to exercise caution here. A driver that expects to use this
* functionality cannot call into Dinput query for device attributes.
* Can result in endless loop where we call the driver and the driver
* calls us back
*/
hres = CDIDev_CreateEffectDriver(this);
if( SUCCEEDED( hres ) )
{
hres = this->pdcb->lpVtbl->GetFFConfigKey(this->pdcb,
KEY_QUERY_VALUE | KEY_ENUMERATE_SUB_KEYS,
&hkFF);
if( hres == S_FALSE )
{
hres = E_FAIL;
}
}
}
if (SUCCEEDED(hres)) {
DWORD chk;
HKEY hkEffects;
LONG lRc;
AssertF( hkFF );
lRc = JoyReg_GetValue(hkFF, TEXT("Attributes"),
REG_BINARY, &this->ffattr, cbX(this->ffattr));
if (lRc != S_OK) {
ZeroX(this->ffattr);
}
lRc = RegOpenKeyEx(hkFF, TEXT("Effects"), 0,
KEY_QUERY_VALUE | KEY_ENUMERATE_SUB_KEYS,
&hkEffects);
if (lRc == ERROR_SUCCESS) {
lRc = RegQueryInfoKey(hkEffects, 0, 0, 0, &chk,
0, 0, 0, 0, 0, 0, 0);
if (lRc == ERROR_SUCCESS) {
hres = AllocCbPpv(cbCxX(chk, EFFECTMAPINFO),
&this->rgemi);
if (SUCCEEDED(hres)) {
DWORD ihk;
this->cemi = 0;
for (ihk = 0; ihk < chk; ihk++) {
CDIDev_SnapOneEffect(this, hkEffects, ihk);
}
this->didcFF &= DIDC_FFFLAGS;
/*
* Note that we mark DIDC_FORCEFEEDBACK only if
* we actually find any effects.
*/
if (this->cemi) {
this->didcFF |= DIDC_FORCEFEEDBACK;
}
hres = S_OK;
} else {
RPF("Warning: Insufficient memory for force feedback");
}
} else {
hres = E_FAIL;
}
RegCloseKey(hkEffects);
} else {
hres = E_NOTIMPL;
}
RegCloseKey(hkFF);
}
ExitBenignOleProc();
return hres;
}
#endif /* IDirectInputDevice2Vtbl */