huwcampbell.com
Reactos
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
11class CClassFactory : public IClassFactory
12{
13public:
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
41protected:
42 LONG m_Ref;
43 LPFNCREATEINSTANCE m_lpfnCI;
44 IID * m_IID;
45};
46
47HRESULT
48WINAPI
49CClassFactory::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
63HRESULT
64WINAPI
65CClassFactory::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
89HRESULT
90WINAPI
91CClassFactory::LockServer(
92 BOOL fLock)
93{
94 return E_NOTIMPL;
95}
96
97IClassFactory *
98CClassFactory_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}