1 /*
2  * COPYRIGHT:       See COPYING in the top level directory
3  * PROJECT:         ReactOS WDM Streaming ActiveMovie Proxy
4  * FILE:            dll/directx/ksproxy/qualityforward.cpp
5  * PURPOSE:         IKsClockForwarder interface
6  *
7  * PROGRAMMERS:     Johannes Anderwald (johannes.anderwald@reactos.org)
8  */
9 #include "precomp.h"
10 
11 #define IID_IKsQualityForwarder KSCATEGORY_QUALITY
12 
13 class CKsQualityForwarder : public IKsQualityForwarder
14 {
15 public:
16     STDMETHODIMP QueryInterface( REFIID InterfaceId, PVOID* Interface);
17 
18     STDMETHODIMP_(ULONG) AddRef()
19     {
20         InterlockedIncrement(&m_Ref);
21         return m_Ref;
22     }
23     STDMETHODIMP_(ULONG) Release()
24     {
25         InterlockedDecrement(&m_Ref);
26 
27         if (!m_Ref)
28         {
29             delete this;
30             return 0;
31         }
32         return m_Ref;
33     }
34 
35     // IKsObject interface
36     HANDLE STDMETHODCALLTYPE KsGetObjectHandle();
37 
38     // IKsQualityForwarder
39     VOID STDMETHODCALLTYPE KsFlushClient(IN IKsPin  *Pin);
40 
41     CKsQualityForwarder(HANDLE handle) : m_Ref(0), m_Handle(handle){}
42     virtual ~CKsQualityForwarder(){ if (m_Handle) CloseHandle(m_Handle);}
43 
44 protected:
45     LONG m_Ref;
46     HANDLE m_Handle;
47 
48 
49 };
50 
51 HRESULT
52 STDMETHODCALLTYPE
53 CKsQualityForwarder::QueryInterface(
54     IN  REFIID refiid,
55     OUT PVOID* Output)
56 {
57     if (IsEqualGUID(refiid, IID_IUnknown) ||
58         IsEqualGUID(refiid, IID_IKsQualityForwarder))
59     {
60         *Output = PVOID(this);
61         reinterpret_cast<IUnknown*>(*Output)->AddRef();
62         return NOERROR;
63     }
64 
65     return E_NOINTERFACE;
66 }
67 
68 //-------------------------------------------------------------------
69 // IKsObject interface
70 //
71 
72 HANDLE
73 STDMETHODCALLTYPE
74 CKsQualityForwarder::KsGetObjectHandle()
75 {
76     return m_Handle;
77 }
78 
79 //-------------------------------------------------------------------
80 // IKsQualityForwarder interface
81 //
82 VOID
83 STDMETHODCALLTYPE
84 CKsQualityForwarder::KsFlushClient(
85     IN IKsPin  *Pin)
86 {
87 #ifdef KSPROXY_TRACE
88     OutputDebugString("UNIMPLEMENTED\n");
89 #endif
90 }
91 
92 HRESULT
93 WINAPI
94 CKsQualityForwarder_Constructor(
95     IUnknown * pUnkOuter,
96     REFIID riid,
97     LPVOID * ppv)
98 {
99     HRESULT hr;
100     HANDLE handle;
101 
102 #ifdef KSPROXY_TRACE
103     OutputDebugStringW(L"CKsQualityForwarder_Constructor\n");
104 #endif
105 
106     // open default clock
107     hr = KsOpenDefaultDevice(KSCATEGORY_QUALITY, GENERIC_READ | GENERIC_WRITE, &handle);
108 
109     if (hr != NOERROR)
110     {
111 #ifdef KSPROXY_TRACE
112          OutputDebugString("CKsClockForwarder_Constructor failed to open device\n");
113 #endif
114          return hr;
115     }
116 
117     CKsQualityForwarder * quality = new CKsQualityForwarder(handle);
118 
119     if (!quality)
120     {
121         // free clock handle
122         CloseHandle(handle);
123         return E_OUTOFMEMORY;
124     }
125 
126     if (FAILED(quality->QueryInterface(riid, ppv)))
127     {
128         /* not supported */
129         delete quality;
130         return E_NOINTERFACE;
131     }
132 
133     return NOERROR;
134 }
135