reactos/drivers/wdm/audio/backpln/portcls/version.cpp

   1 /*
   2  * COPYRIGHT:       See COPYING in the top level directory
   3  * PROJECT:         ReactOS Kernel Streaming
   4  * FILE:            drivers/wdm/audio/backpln/portcls/version.cpp
   5  * PURPOSE:         Implements IPortClsVersion interface
   6  * PROGRAMMER:      Johannes Anderwald
   7  */
   8
   9
  10 #include "private.hpp"
  11
  12
  13 class CPortClsVersion : public IPortClsVersion
  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     IMP_IPortClsVersion;
  36
  37     CPortClsVersion(IUnknown *OuterUnknown)
  38     {
  39         m_Ref = 0;
  40     }
  41     virtual ~CPortClsVersion()
  42     {
  43
  44     }
  45
  46 protected:
  47     LONG m_Ref;
  48
  49 };
  50
  51
  52
  53 //---------------------------------------------------------------
  54 // IPortClsVersion interface functions
  55 //
  56
  57 NTSTATUS
  58 NTAPI
  59 CPortClsVersion::QueryInterface(
  60     IN  REFIID refiid,
  61     OUT PVOID* Output)
  62 {
  63     if (IsEqualGUIDAligned(refiid, IID_IPortClsVersion) ||
  64         IsEqualGUIDAligned(refiid, IID_IUnknown))
  65     {
  66         *Output = PVOID(PPORTCLSVERSION(this));
  67         PUNKNOWN(*Output)->AddRef();
  68         return STATUS_SUCCESS;
  69     }
  70     return STATUS_UNSUCCESSFUL;
  71 }
  72
  73 DWORD
  74 NTAPI
  75 CPortClsVersion::GetVersion()
  76 {
  77     return kVersionWinXP_UAAQFE;
  78 }
  79
  80 NTSTATUS NewPortClsVersion(
  81     OUT PPORTCLSVERSION * OutVersion)
  82 {
  83     CPortClsVersion * This = new(NonPagedPool, TAG_PORTCLASS) CPortClsVersion(NULL);
  84
  85     if (!This)
  86         return STATUS_INSUFFICIENT_RESOURCES;
  87
  88     This->AddRef();
  89
  90     *OutVersion = (PPORTCLSVERSION)This;
  91
  92     return STATUS_SUCCESS;
  93 }