hw.h

/*
Module Name:
  hw.h

Abstract:
  Declaration of MSVAD HW class. 
  MSVAD HW has an array for storing mixer and volume settings
  for the topology.
*/

#ifndef __HW_H_
#define __HW_H_

//=============================================================================
// Defines
//=============================================================================
// BUGBUG we should dynamically allocate this...
#define MAX_TOPOLOGY_NODES 20

//=============================================================================
// Classes
//=============================================================================
///////////////////////////////////////////////////////////////////////////////
// CRTSDAudioHW
// This class represents virtual MSVAD HW. An array representing volume
// registers and mute registers.

class CRTSDAudioHW {
protected:
  BOOL   m_MuteControls[MAX_TOPOLOGY_NODES];
  LONG   m_VolumeControls[MAX_TOPOLOGY_NODES];
  ULONG  m_ulMux;            // Mux selection

public:
  CRTSDAudioHW();
  void MixerReset();
  
  BOOL GetMixerMute(IN ULONG ulNode);
  void SetMixerMute(IN ULONG ulNode, IN BOOL fMute);

  ULONG GetMixerMux();
  void SetMixerMux(IN ULONG ulNode);

  LONG GetMixerVolume(IN ULONG ulNode, IN LONG lChannel);
  void SetMixerVolume(IN ULONG ulNode, IN LONG lChannel, IN LONG lVolume);
};
typedef CRTSDAudioHW *PCRTSDAudioHW;

#endif