150 lines
3.2 KiB
C++
150 lines
3.2 KiB
C++
/*****************************************************************************
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*
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* powertoycf.cpp - IClassFactory interface
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*
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*****************************************************************************/
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#include "priv.h"
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#define INITSCID
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#include <initguid.h>
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#include "guids.h"
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#include "sccls.h"
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#include "power.h"
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#include "power_i.c"
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// Need this so the GUIDs are defined
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#include <mmsystem.h>
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#include <amstream.h>
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#include "dsound.h"
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typedef HRESULT (*PFNCREATE)(IUnknown*, REFIID, LPVOID*);
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typedef struct
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{
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const GUID* pclsid;
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PFNCREATE pfnCreate;
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} CLASSFACTORYENTRY;
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static const CLASSFACTORYENTRY
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g_InProcCreateList[] =
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{
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{&CLSID_Zaxxon, CZaxxon_CreateInstance},
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{&CLSID_ZaxxonPlayer, CZaxxonPlayer_CreateInstance},
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{&CLSID_MegaMan, CMegaMan_CreateInstance},
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{0,0},
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};
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/*****************************************************************************
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* IClassFactory::CreateInstance
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*****************************************************************************/
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HRESULT CFactory::CreateInstance(IUnknown * punkOuter, REFIID riid, void ** ppv)
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{
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HRESULT hres = E_INVALIDARG;
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if (!punkOuter)
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{
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const CLASSFACTORYENTRY* pcf = g_InProcCreateList;
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int i = 0;
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while (pcf[i].pfnCreate)
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{
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if (IsEqualCLSID(_rclsid, *pcf[i].pclsid))
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{
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hres = pcf[i].pfnCreate(punkOuter, riid, ppv);
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break;
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}
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i++;
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}
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}
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else
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{
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hres = CLASS_E_NOAGGREGATION;
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}
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return hres;
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}
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/*****************************************************************************
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*
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* IClassFactory::LockServer
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*
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* What a stupid function. Locking the server is identical to
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* creating an object and not releasing it until you want to unlock
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* the server.
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*
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*****************************************************************************/
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HRESULT CFactory::LockServer(BOOL fLock)
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{
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if (fLock)
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DllAddRef();
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else
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DllRelease();
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return S_OK;
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}
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HRESULT CFactory_Create(REFCLSID rclsid, REFIID riid, void ** ppv)
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{
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HRESULT hres;
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if (IsEqualCLSID(riid, IID_IClassFactory))
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{
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*ppv = (LPVOID) new CFactory(rclsid);
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hres = (*ppv) ? S_OK : E_OUTOFMEMORY;
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}
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else
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hres = E_NOINTERFACE;
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return hres;
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}
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CFactory::CFactory(REFCLSID rclsid) : _cRef(1)
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{
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_rclsid = rclsid;
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DllAddRef();
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}
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CFactory::~CFactory()
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{
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DllRelease();
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}
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//===========================
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// *** IUnknown Interface ***
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//===========================
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ULONG CFactory::AddRef()
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{
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_cRef++;
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return _cRef;
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}
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ULONG CFactory::Release()
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{
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ASSERT(_cRef > 0);
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_cRef--;
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if (_cRef > 0)
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return _cRef;
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delete this;
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return 0;
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}
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HRESULT CFactory::QueryInterface(REFIID riid, void **ppv)
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{
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if (IsEqualCLSID(riid, IID_IUnknown) || IsEqualCLSID(riid, IID_IClassFactory))
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{
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*ppv = SAFECAST(this, IClassFactory *);
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}
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else
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{
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*ppv = NULL;
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return E_NOINTERFACE;
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}
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AddRef();
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return S_OK;
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}
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