read file mp3 by C++

// mp3player2.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"
#include <windows.h>
#include <Mmsystem.h>
#pragma comment (lib,"winmm.lib")

#include <conio.h> //_getch()
class Mp3Player
{
protected:
    DWORD m_idPlayer;
  
    Mp3Player(DWORD id)
    {
        m_idPlayer = id;
    }
public:

//Open_File
//Thong tin:
//   - Khoi tao doi tuong Mp3Player
//   - Tham so dua vao la duong dan file MP3

    static Mp3Player* Open_File(WCHAR *lpFileName)
    {
#pragma warning (disable:4311)

        // Tham so cho Media
        MCI_OPEN_PARMS mciOpenParms;
      
        // Driver de play MP3 (tham khao them trong MSDN)
        mciOpenParms.lpstrDeviceType = L"mpegvideo";
        // File mp3 se play
        mciOpenParms.lpstrElementName = lpFileName;
      
        // Khoi tao mp3Player
        DWORD dwResult = mciSendCommand(0, MCI_OPEN,MCI_OPEN_TYPE | MCI_OPEN_ELEMENT,(DWORD) &mciOpenParms);  
        // Loi khoi tao (co the do soundCard)
        if (dwResult != 0 )
            return NULL;
      
        // Thiet lap tham so cho mp3Player (su dung don vi Milisecond)
        MCI_SET_PARMS param;
        param.dwTimeFormat = MCI_FORMAT_MILLISECONDS;
        dwResult = mciSendCommand(mciOpenParms.wDeviceID,MCI_SET,MCI_SET_TIME_FORMAT,(DWORD) (LPMCI_SET_PARMS) &param);
        // Loi thiet lap tham so
        if (dwResult != 0 )
            return NULL;

#pragma warning (default:4311)

        // Khoi tao doi tuong Mp3
        return new Mp3Player( mciOpenParms.wDeviceID );   
    }
  
    virtual ~Mp3Player()
    {
        // Huy mp3Player
        mciSendCommand(m_idPlayer, MCI_CLOSE, 0, NULL);
    }

    void Release(){delete this;}

// Play()
// Thong tin: Play file nhac
    void Play()
    {
#pragma warning (disable:4311)
        MCI_PLAY_PARMS param;
        param.dwCallback = (DWORD) NULL;
        mciSendCommand(m_idPlayer, MCI_PLAY, MCI_NOTIFY,(DWORD)(LPVOID) &param);
#pragma warning (default:4311)
    }

// Stop()
// Thong tin: Dung file nhac  
    void Stop()
    {
#pragma warning (disable:4311)
        MCI_GENERIC_PARMS param;
        param.dwCallback = NULL;
        mciSendCommand(m_idPlayer,MCI_STOP,MCI_NOTIFY,(DWORD) (LPMCI_GENERIC_PARMS) &param);
#pragma warning (default:4311)
    }

// Pause()
// Thong tin: Tam dung file nhac  
    void Pause()
    {
#pragma warning (disable:4311)
        MCI_GENERIC_PARMS param;
        param.dwCallback = NULL;
        mciSendCommand(m_idPlayer,MCI_PAUSE,MCI_NOTIFY,(DWORD)(LPMCI_GENERIC_PARMS) &param);
#pragma warning (default:4311)
    }

// Resume()
// Thong tin: Tiep tuc play (do pause)
    void Resume()
    {
#pragma warning (disable:4311)
        MCI_GENERIC_PARMS param;
        param.dwCallback = NULL;
        mciSendCommand(m_idPlayer,MCI_RESUME,MCI_NOTIFY,(DWORD)(LPMCI_GENERIC_PARMS) &param);
#pragma warning (default:4311)
    }

// Length()
// Thong tin: Tra ve thoi gian file mp3 (milisecond)
    DWORD Get_Length()
    {
#pragma warning (disable:4311)
        MCI_STATUS_PARMS param;
        param.dwItem = MCI_STATUS_LENGTH;
        DWORD dwResult = mciSendCommand(m_idPlayer,MCI_STATUS ,MCI_STATUS_ITEM, (DWORD) (LPMCI_STATUS_PARMS) &param);
#pragma warning (default:4311)
        if (dwResult != 0)
            return false;

        return (DWORD)param.dwReturn;
    }

// Get_Position()
// Thong tin: Tra ve vi tri (thoi diem milisecond) dang play
    DWORD Get_Position()
    {
#pragma warning (disable:4311)
        MCI_STATUS_PARMS param;
        param.dwItem = MCI_STATUS_POSITION;;
        DWORD dwResult = mciSendCommand(m_idPlayer,MCI_STATUS ,MCI_STATUS_ITEM, (DWORD) (LPMCI_STATUS_PARMS) &param);
#pragma warning (default:4311)
        if (dwResult != 0)
            return false;
        return (DWORD)param.dwReturn;
    }

// Seek()
// Thong tin: Nhay den vi tri seekto de play (milisecond)
    void Seek(DWORD seekto)
    {
#pragma warning (disable:4311)
        MCI_SEEK_PARMS param;
        param.dwTo = seekto;  
        mciSendCommand(m_idPlayer,MCI_SEEK,MCI_TO,(DWORD) (LPMCI_SEEK_PARMS) &param);
#pragma warning (default:4311)

    }
};

int _tmain(int argc, _TCHAR* argv[])
{
      Mp3Player *pPlayer = Mp3Player::Open_File(L"aaa.mp3");

    if (pPlayer == NULL)
    {
        printf("Sound card hoac path mp3 khong hop le\n");
        return 1;
    }
  
    pPlayer->Play();

    printf("Hay lang nghe nhe... (press a key to stop)\n");
    _getch(); 

    pPlayer->Release();
    return 0;
}