audiomanager.h

/***************************************************************************
                          audiomanager.h  -  description
        $Id: audiomanager.h 3 2006-06-11 08:16:14Z neoneurone $
                             -------------------
    begin                : ven déc 26 2003
    copyright            : (C) 2003 by Duong-Khang NGUYEN
    email                : neoneurone @ users sourceforge net
 ***************************************************************************/

/***************************************************************************
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   any later version.                                                    *
 *                                                                         *
 ***************************************************************************/

// IF we don't use SDL_mixer THEN
#ifndef AUDIO_SDL

// IF we have not included this file already THEN
#ifndef _OPENCITY_AUDIOMANAGER_H_

#define _OPENCITY_AUDIOMANAGER_H_ 1

    #include "main.h"

    #define OC_AUDIO_FREQUENCY  44100         // CD quality
    #define OC_AUDIO_FORMAT     AUDIO_S16SYS  // host system signed byte order
    #define OC_AUDIO_CHANNELS   2             // 2 channels for stereo
    #define OC_AUDIO_CHUNK_SIZE 4096          // mixer's sample chunk size

    #define OC_AUDIO_MIX_CHANNELS 8           // total number of mix channels
    #define OC_AUDIO_RESERVED_CHANNELS 4      // reserved channels for sound effects

    #define OC_AUDIO_VOLUME_MIN 0
    #define OC_AUDIO_VOLUME_MAX MIX_MAX_VOLUME

    #define OC_MAX_FILENAME_LENGTH 255


using namespace std;

//========================================================================
class AudioManager {
public:
    enum AUDIO_CHANNEL {
        AUDIO_CENTER_CHANNEL = -1,
        AUDIO_LEFT_CHANNEL = 0,
        AUDIO_LEFT_HALF_CHANNEL = 1,
        AUDIO_RIGHT_CHANNEL = 3,
        AUDIO_RIGHT_HALF_CHANNEL = 2
    };

    AudioManager();
    ~AudioManager();


//========================================================================
    OPENCITY_ERR_CODE OpenAudio(void);
    OPENCITY_ERR_CODE CloseAudio(void);

//========================================================================
    OPENCITY_ERR_CODE
    LoadMusicList(
        const string& csrFilename,
        const string& csrPrefix = "" );

    const uint &
    GetNumberMusic(void) const;

    bool
    PlayingMusic(void) const;

    OPENCITY_ERR_CODE
    PlayMusic(
        const uint & rcuiMusicIndex,
        const int & rciLoops = 1 );

    OPENCITY_ERR_CODE
    PlayNextMusic(
        const int & rciLoops = 1 );

    OPENCITY_ERR_CODE
    PlayPreviousMusic(
        const int & rciLoops = 1 );

    void
    StopMusic(void) const;

    void
    ToggleRandomMusic(void);

    void
    ToggleMusic(void);

    void
    VolumeMusic( const int & rciVol ) const;


//========================================================================
    OPENCITY_ERR_CODE
    LoadSoundList(
        const string & csrFilename,
        const string& csrPrefix = "" );

    const uint &
    GetNumberSound(void) const;

    OPENCITY_ERR_CODE
    PlaySound(
        const uint & rcuiSoundIndex,
        const AUDIO_CHANNEL & enumChannel = AUDIO_CENTER_CHANNEL );

    void
    ToggleSound(void);

    void
    VolumeSound( const int & rciVol ) const;



private:
    bool boolAudioDeviceInitialized;
    bool boolMusicEnabled;
    bool boolSoundEnabled;
    uint uiNumberSound;
    uint uiNumberMusic;
    uint uiCurrentMusic;
};

// ELSE, we have included this file already
#else
#endif

// ELSE, we use SDL_mixer
#else
#include "audiomanagersdl.h"
#endif

---