reactos/dll/directx/bdaplgin/classfactory.cpp

   1 /*
   2  * COPYRIGHT:       See COPYING in the top level directory
   3  * PROJECT:         ReactOS BDA Proxy
   4  * FILE:            dll/directx/bdaplgin/classfactory.cpp
   5  * PURPOSE:         ClassFactory interface
   6  *
   7  * PROGRAMMERS:     Johannes Anderwald (janderwald@reactos.org)
   8  */
   9 #include "precomp.h"
  10
  11 const GUID IID_IUnknown           = {0x00000000, 0x0000, 0x0000, {0xC0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x46}};
  12 const GUID IID_IClassFactory      = {0x00000001, 0x0000, 0x0000, {0xC0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x46}};
  13
  14 class CClassFactory : public IClassFactory
  15 {
  16 public:
  17     STDMETHODIMP QueryInterface( REFIID InterfaceId, PVOID* Interface);
  18
  19     STDMETHODIMP_(ULONG) AddRef()
  20     {
  21         InterlockedIncrement(&m_Ref);
  22         return m_Ref;
  23     }
  24     STDMETHODIMP_(ULONG) Release()
  25     {
  26         InterlockedDecrement(&m_Ref);
  27         if (!m_Ref)
  28         {
  29             delete this;
  30             return 0;
  31         }
  32         return m_Ref;
  33     }
  34
  35     HRESULT WINAPI CreateInstance(LPUNKNOWN pUnkOuter, REFIID riid, LPVOID *ppvObject);
  36     HRESULT WINAPI LockServer(BOOL fLock);
  37
  38     CClassFactory(LPFNCREATEINSTANCE lpfnCI, PLONG pcRefDll, IID *riidInst) : m_Ref(1), m_lpfnCI(lpfnCI), m_IID(riidInst)
  39     {};
  40
  41     virtual ~CClassFactory(){};
  42
  43 protected:
  44     LONG m_Ref;
  45     LPFNCREATEINSTANCE m_lpfnCI;
  46     IID * m_IID;
  47 };
  48
  49 HRESULT
  50 WINAPI
  51 CClassFactory::QueryInterface(
  52     REFIID riid,
  53     LPVOID *ppvObj)
  54 {
  55     *ppvObj = NULL;
  56     if(IsEqualIID(riid, IID_IUnknown) || IsEqualIID(riid, IID_IClassFactory))
  57     {
  58         *ppvObj = PVOID(this);
  59         InterlockedIncrement(&m_Ref);
  60         return S_OK;
  61     }
  62     return E_NOINTERFACE;
  63 }
  64
  65 HRESULT
  66 WINAPI
  67 CClassFactory::CreateInstance(
  68     LPUNKNOWN pUnkOuter,
  69     REFIID riid,
  70     LPVOID *ppvObject)
  71 {
  72     *ppvObject = NULL;
  73
  74     if ( m_IID == NULL || IsEqualCLSID(riid, *m_IID) || IsEqualCLSID(riid, IID_IUnknown))
  75     {
  76         return m_lpfnCI(pUnkOuter, riid, ppvObject);
  77     }
  78
  79     return E_NOINTERFACE;
  80 }
  81
  82 HRESULT
  83 WINAPI
  84 CClassFactory::LockServer(
  85     BOOL fLock)
  86 {
  87     return E_NOTIMPL;
  88 }
  89
  90 IClassFactory *
  91 CClassFactory_fnConstructor(
  92     LPFNCREATEINSTANCE lpfnCI,
  93     PLONG pcRefDll,
  94     IID * riidInst)
  95 {
  96     CClassFactory* factory = new CClassFactory(lpfnCI, pcRefDll, riidInst);
  97
  98     if (!factory)
  99         return NULL;
 100
 101     if (pcRefDll)
 102         InterlockedIncrement(pcRefDll);
 103
 104     return (LPCLASSFACTORY)factory;
 105 }