mutedsessionevents.h

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#ifndef MUTEDSESSIONEVENTS_H
#define MUTEDSESSIONEVENTS_H
 
 
#include <mmdeviceapi.h>
#include <Audiopolicy.h>
 
class CMutedSessionEvents : public IAudioSessionEvents
{
public:
    CMutedSessionEvents(IAudioSessionManager*    pAudioSessionManager );
      ~CMutedSessionEvents(){}
 
      // IUnknown methods -- AddRef, Release, and QueryInterface
 
      ULONG STDMETHODCALLTYPE AddRef(){return InterlockedIncrement(&_cRef);}
 
      ULONG STDMETHODCALLTYPE Release();
 
      HRESULT STDMETHODCALLTYPE QueryInterface(
          REFIID  riid,
          VOID  **ppvInterface);
 
      // Notification methods for audio session events
 
      HRESULT STDMETHODCALLTYPE OnDisplayNameChanged(
          LPCWSTR NewDisplayName,
          LPCGUID EventContext)
      {
          return S_OK;
      }
 
      HRESULT STDMETHODCALLTYPE OnIconPathChanged(
          LPCWSTR NewIconPath,
          LPCGUID EventContext)
      {
          return S_OK;
      }
 
      HRESULT STDMETHODCALLTYPE OnSimpleVolumeChanged(
          float NewVolume,
          BOOL NewMute,
          LPCGUID EventContext);
 
      HRESULT STDMETHODCALLTYPE OnChannelVolumeChanged(
          DWORD ChannelCount,
          float NewChannelVolumeArray[],
          DWORD ChangedChannel,
          LPCGUID EventContext)
      {
          return S_OK;
      }
 
      HRESULT STDMETHODCALLTYPE OnGroupingParamChanged(
          LPCGUID NewGroupingParam,
          LPCGUID EventContext)
      {
          return S_OK;
      }
 
      HRESULT STDMETHODCALLTYPE OnStateChanged(
          AudioSessionState NewState)
      {
          return S_OK;
      }
 
      HRESULT STDMETHODCALLTYPE OnSessionDisconnected(
          AudioSessionDisconnectReason DisconnectReason)
      {
          return S_OK;
      }
 
      bool TxSetMuted(bool bMuted);
 
private:
    LONG _cRef;
 
private:
    IAudioSessionManager*        m_AudioSessionManager;
};
 
 
#endif // MUTEDSESSIONEVENTS_H