reactos/dll/directx/bdaplgin/controlnode.cpp

   1 /*
   2  * COPYRIGHT:       See COPYING in the top level directory
   3  * PROJECT:         ReactOS BDA Proxy
   4  * FILE:            dll/directx/bdaplgin/controlnode.cpp
   5  * PURPOSE:         ControlNode interface
   6  *
   7  * PROGRAMMERS:     Johannes Anderwald (janderwald@reactos.org)
   8  */
   9
  10 #include "precomp.h"
  11
  12 class CControlNode : public IUnknown
  13 {
  14 public:
  15     STDMETHODIMP QueryInterface( REFIID InterfaceId, PVOID* Interface);
  16
  17     STDMETHODIMP_(ULONG) AddRef()
  18     {
  19         InterlockedIncrement(&m_Ref);
  20         return m_Ref;
  21     }
  22     STDMETHODIMP_(ULONG) Release()
  23     {
  24         InterlockedDecrement(&m_Ref);
  25
  26         if (!m_Ref)
  27         {
  28             delete this;
  29             return 0;
  30         }
  31         return m_Ref;
  32     }
  33
  34     CControlNode(HANDLE hFile, ULONG NodeType, ULONG PinId) : m_Ref(0), m_hFile(hFile), m_NodeType(NodeType), m_PinId(PinId){};
  35     virtual ~CControlNode(){};
  36
  37 protected:
  38     LONG m_Ref;
  39     HANDLE m_hFile;
  40     ULONG m_NodeType;
  41     ULONG m_PinId;
  42 };
  43
  44 HRESULT
  45 STDMETHODCALLTYPE
  46 CControlNode::QueryInterface(
  47     IN  REFIID refiid,
  48     OUT PVOID* Output)
  49 {
  50     WCHAR Buffer[MAX_PATH];
  51     LPOLESTR lpstr;
  52
  53     *Output = NULL;
  54
  55     if (IsEqualGUID(refiid, IID_IUnknown))
  56     {
  57         *Output = PVOID(this);
  58         reinterpret_cast<IUnknown*>(*Output)->AddRef();
  59         return NOERROR;
  60     }
  61     else if(IsEqualGUID(refiid, IID_IBDA_FrequencyFilter))
  62     {
  63         return CBDAFrequencyFilter_fnConstructor(m_hFile, refiid, Output);
  64     }
  65     else if(IsEqualGUID(refiid, IID_IBDA_SignalStatistics))
  66     {
  67         return CBDASignalStatistics_fnConstructor(m_hFile, refiid, Output);
  68     }
  69     else if(IsEqualGUID(refiid, IID_IBDA_LNBInfo))
  70     {
  71         return CBDALNBInfo_fnConstructor(m_hFile, refiid, Output);
  72     }
  73     else if(IsEqualGUID(refiid, IID_IBDA_DigitalDemodulator))
  74     {
  75         return CBDADigitalDemodulator_fnConstructor(m_hFile, refiid, Output);
  76     }
  77
  78     StringFromCLSID(refiid, &lpstr);
  79     swprintf(Buffer, L"CControlNode::QueryInterface: NoInterface for %s", lpstr);
  80     OutputDebugStringW(Buffer);
  81     CoTaskMemFree(lpstr);
  82
  83     return E_NOINTERFACE;
  84 }
  85
  86
  87 HRESULT
  88 WINAPI
  89 CControlNode_fnConstructor(
  90     HANDLE hFile,
  91     ULONG NodeType,
  92     ULONG PinId,
  93     REFIID riid,
  94     LPVOID * ppv)
  95 {
  96     // construct device control
  97     CControlNode * handler = new CControlNode(hFile, NodeType, PinId);
  98
  99     OutputDebugStringW(L"CControlNode_fnConstructor\n");
 100
 101     if (!handler)
 102         return E_OUTOFMEMORY;
 103
 104     if (FAILED(handler->QueryInterface(riid, ppv)))
 105     {
 106         /* not supported */
 107         delete handler;
 108         return E_NOINTERFACE;
 109     }
 110
 111     return NOERROR;
 112 }