reactos/dll/directx/ksproxy/classfactory.cpp

   1 /*
   2  * COPYRIGHT:       See COPYING in the top level directory
   3  * PROJECT:         ReactOS WDM Streaming ActiveMovie Proxy
   4  * FILE:            dll/directx/ksproxy/classfactory.cpp
   5  * PURPOSE:         IClassFactory interface
   6  *
   7  * PROGRAMMERS:     Johannes Anderwald (johannes.anderwald@reactos.org)
   8  */
   9 #include "precomp.h"
  10
  11 class CClassFactory : public IClassFactory
  12 {
  13 public:
  14     STDMETHODIMP QueryInterface( REFIID InterfaceId, PVOID* Interface);
  15
  16     STDMETHODIMP_(ULONG) AddRef()
  17     {
  18         InterlockedIncrement(&m_Ref);
  19         return m_Ref;
  20     }
  21     STDMETHODIMP_(ULONG) Release()
  22     {
  23         InterlockedDecrement(&m_Ref);
  24
  25         if (!m_Ref)
  26         {
  27             delete this;
  28             return 0;
  29         }
  30         return m_Ref;
  31     }
  32
  33     HRESULT WINAPI CreateInstance(LPUNKNOWN pUnkOuter, REFIID riid, LPVOID *ppvObject);
  34     HRESULT WINAPI LockServer(BOOL fLock);
  35
  36     CClassFactory(LPFNCREATEINSTANCE lpfnCI, PLONG pcRefDll, IID *riidInst) : m_Ref(1), m_lpfnCI(lpfnCI), m_IID(riidInst)
  37     {};
  38
  39     virtual ~CClassFactory(){};
  40
  41 protected:
  42     LONG m_Ref;
  43     LPFNCREATEINSTANCE m_lpfnCI;
  44     IID * m_IID;
  45 };
  46
  47 HRESULT
  48 WINAPI
  49 CClassFactory::QueryInterface(
  50     REFIID riid,
  51     LPVOID *ppvObj)
  52 {
  53     *ppvObj = NULL;
  54     if(IsEqualIID(riid, IID_IUnknown) || IsEqualIID(riid, IID_IClassFactory))
  55     {
  56         *ppvObj = PVOID(this);
  57         InterlockedIncrement(&m_Ref);
  58         return S_OK;
  59     }
  60     return E_NOINTERFACE;
  61 }
  62
  63 HRESULT
  64 WINAPI
  65 CClassFactory::CreateInstance(
  66     LPUNKNOWN pUnkOuter,
  67     REFIID riid,
  68     LPVOID *ppvObject)
  69 {
  70     WCHAR Buffer[MAX_PATH];
  71     LPOLESTR lpstr;
  72
  73     *ppvObject = NULL;
  74
  75     StringFromCLSID(riid, &lpstr);
  76
  77     swprintf(Buffer, L"riid %s", lpstr);
  78     OutputDebugStringW(Buffer);
  79
  80
  81     if ( m_IID == NULL || IsEqualCLSID(riid, *m_IID) || IsEqualCLSID(riid, IID_IUnknown))
  82     {
  83         return m_lpfnCI(pUnkOuter, riid, ppvObject);
  84     }
  85
  86     return E_NOINTERFACE;
  87 }
  88
  89 HRESULT
  90 WINAPI
  91 CClassFactory::LockServer(
  92     BOOL fLock)
  93 {
  94     return E_NOTIMPL;
  95 }
  96
  97 IClassFactory *
  98 CClassFactory_fnConstructor(
  99     LPFNCREATEINSTANCE lpfnCI,
 100     PLONG pcRefDll,
 101     IID * riidInst)
 102 {
 103     CClassFactory* factory = new CClassFactory(lpfnCI, pcRefDll, riidInst);
 104
 105     if (!factory)
 106         return NULL;
 107
 108     if (pcRefDll)
 109         InterlockedIncrement(pcRefDll);
 110
 111     return (LPCLASSFACTORY)factory;
 112 }