taudioshared.h

手机操作系统Symbian支持混音功能的声音引擎代码

/*
 * ============================================================================
 *  Name     : TAudioShared.h
 *  Part of  : SoundMixer
 *  Created  : 03/30/2006 by Forum Nokia
 *  Description:
 *     This is the project specification file for SoundMixer.
 *     Initial content was generated by Series 60 AppWizard.
 *
 *  Version  : 2.0.0
 *  Copyright: Forum Nokia
 * ============================================================================
 */

#ifndef __TAUDIOSHARED_H__
#define __TAUDIOSHARED_H__

// INCLUDES
#include <e32std.h>
#include "TSample.h"

// CONSTANTS
const TInt KMaxChannels = 16;
const TInt KAudioShift = 12;

// ENUMERATIONS
enum TMixerCmd
  {
  ECmdStartMixer = 0,
  ECmdStopMixer,
  ECmdDestroyMixer
  };

// CLASS DECLARATION
/**
* TAudioShared is internal type for sound mixer application.
* This struct is used for inter-thread data trasfer and
* communication
*/

class TAudioShared
  {
  public:
    /// for thread end signaling
    RSemaphore  iAliveMutex;

    /// for sample attribute change signaling
    RMutex  iMutex;

    /// pause flag
    TBool iPaused;

    /// sample attributes
    TSample iSample[ KMaxChannels ];
    TInt  iVolume[ KMaxChannels ];
    TInt  iFrequency[ KMaxChannels ];
    TBool iPlayStarted[ KMaxChannels ];
    TExcType        iExc;
    TRequestStatus* iStatusPtr;
    
    /// main volume
    TInt  iMainVolume;

    /// Command parameter
    TMixerCmd iCmd;
  };

#endif

// End of File