reactos/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/clockforward.cpp
   5  * PURPOSE:         IKsClockForwarder interface
   6  *
   7  * PROGRAMMERS:     Johannes Anderwald (janderwald@reactos.org)
   8  */
   9 #include "precomp.h"
  10
  11 #ifndef _MSC_VER
  12 const GUID KSCATEGORY_QUALITY = {0x97EBAACB, 0x95BD, 0x11D0, {0xA3, 0xEA, 0x00, 0xA0, 0xC9, 0x22, 0x31, 0x96}};
  13 #endif
  14
  15 #define IID_IKsQualityForwarder KSCATEGORY_QUALITY
  16
  17 class CKsQualityForwarder : public IKsQualityForwarder
  18 {
  19 public:
  20     STDMETHODIMP QueryInterface( REFIID InterfaceId, PVOID* Interface);
  21
  22     STDMETHODIMP_(ULONG) AddRef()
  23     {
  24         InterlockedIncrement(&m_Ref);
  25         return m_Ref;
  26     }
  27     STDMETHODIMP_(ULONG) Release()
  28     {
  29         InterlockedDecrement(&m_Ref);
  30
  31         if (!m_Ref)
  32         {
  33             delete this;
  34             return 0;
  35         }
  36         return m_Ref;
  37     }
  38
  39     // IKsObject interface
  40     HANDLE STDMETHODCALLTYPE KsGetObjectHandle();
  41
  42     // IKsQualityForwarder
  43     VOID STDMETHODCALLTYPE KsFlushClient(IN IKsPin  *Pin);
  44
  45     CKsQualityForwarder(HANDLE handle) : m_Ref(0), m_Handle(handle){}
  46     virtual ~CKsQualityForwarder(){ if (m_Handle) CloseHandle(m_Handle);}
  47
  48 protected:
  49     LONG m_Ref;
  50     HANDLE m_Handle;
  51
  52
  53 };
  54
  55 HRESULT
  56 STDMETHODCALLTYPE
  57 CKsQualityForwarder::QueryInterface(
  58     IN  REFIID refiid,
  59     OUT PVOID* Output)
  60 {
  61     if (IsEqualGUID(refiid, IID_IUnknown) ||
  62         IsEqualGUID(refiid, IID_IKsQualityForwarder))
  63     {
  64         *Output = PVOID(this);
  65         reinterpret_cast<IUnknown*>(*Output)->AddRef();
  66         return NOERROR;
  67     }
  68
  69     return E_NOINTERFACE;
  70 }
  71
  72 //-------------------------------------------------------------------
  73 // IKsObject interface
  74 //
  75
  76 HANDLE
  77 STDMETHODCALLTYPE
  78 CKsQualityForwarder::KsGetObjectHandle()
  79 {
  80     return m_Handle;
  81 }
  82
  83 //-------------------------------------------------------------------
  84 // IKsQualityForwarder interface
  85 //
  86 VOID
  87 STDMETHODCALLTYPE
  88 CKsQualityForwarder::KsFlushClient(
  89     IN IKsPin  *Pin)
  90 {
  91     OutputDebugString("UNIMPLEMENTED\n");
  92 }
  93
  94 HRESULT
  95 WINAPI
  96 CKsQualityForwarder_Constructor(
  97     IUnknown * pUnkOuter,
  98     REFIID riid,
  99     LPVOID * ppv)
 100 {
 101     HRESULT hr;
 102     HANDLE handle;
 103
 104     OutputDebugStringW(L"CKsQualityForwarder_Constructor\n");
 105
 106     // open default clock
 107     hr = KsOpenDefaultDevice(KSCATEGORY_QUALITY, GENERIC_READ | GENERIC_WRITE, &handle);
 108
 109     if (hr != NOERROR)
 110     {
 111          OutputDebugString("CKsClockForwarder_Constructor failed to open device\n");
 112          return hr;
 113     }
 114
 115     CKsQualityForwarder * quality = new CKsQualityForwarder(handle);
 116
 117     if (!quality)
 118     {
 119         // free clock handle
 120         CloseHandle(handle);
 121         return E_OUTOFMEMORY;
 122     }
 123
 124     if (FAILED(quality->QueryInterface(riid, ppv)))
 125     {
 126         /* not supported */
 127         delete quality;
 128         return E_NOINTERFACE;
 129     }
 130
 131     return NOERROR;
 132 }