MCI CD Player

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• Download demo project - 103 Kb

Introduction

This project explores the Microsoft Media Control Interface (MCI). I wrote a wrapper for MCI CD Audio commands. The class wrapper was named CCDAudio.

Details

The CCDAudio class declaration is:

//========================================================================
// A class wrapper of MCI API functions
//========================================================================
class CCDAudio
{
public:
// constructor
CCDAudio();
// destructor
virtual ~CCDAudio();

// Start playing CD Audio
MCIERROR Play();
// Start playing CD Audio on given position
MCIERROR Play(const int nPos);
// Stop playing CD Audio
MCIERROR Stop();
// Pause playing CD Audio
MCIERROR Pause();
// Move to the next track
MCIERROR Forward();
// Move to the previous track
MCIERROR Backward();
// Eject the CDROM
void EjectCDROM();

// Return the current position in seconds
int GetCurrentPos();
// Return the current track number
int GetCurrentTrack();
// Return length of all track in seconds
int GetLenghtAllTracks();
// Return total tracks count
int GetTracksCount();
// Return length of given track
int GetTrackLength(const int nTrack);
// Return begin time of given track
int GetTrackBeginTime( const int nTrack );

// check wheter CD media is inserted
bool IsMediaInsert();
// is paused mode
bool IsPaused();
// is stopped mode
bool IsStopped();
// the device is ready
bool IsReady();
// is playing mode
bool IsPlaying();

protected:
    // MCI error code
    MCIERROR m_nErrorCode;

protected:
    // handle MCI errors
    inline void MCIError( MCIERROR MCIError );
};

All of the functions are divided into three groups:

1. Manage functions.
2. Time and position functions.
3. Status functions.

Note: The time is represented in seconds.

Use of CCDAudio

1. First you should create an instance of this class:

   protected:
       CCDAudio m_CDAudio;
   

2. For starting to play the tracks:

   m_CDAudio.Play();
   

3. To pause playing:

   m_CDAudio.Pause();
   

4. To stop playing:

   m_CDAudio.Stop();
   

5. Move to the previous track:

   m_CDAudio.Backward();

6. Move to the next track:

   m_CDAudio.Forward();

7. Eject/Close CD ROM:

   m_CDAudio.EjectCDROM();

8. Play from begining of the selected track:

   m_CDAudio.Play( m_CDAudio.GetTrackBeginTime( nTrack ) );

That is all. I hope this class will be useful.