dll/directx/ksproxy/qualityforward.cpp

   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 }