sound.h

/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * 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 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 */
 
#ifndef AGI_SOUND_H
#define AGI_SOUND_H
 
namespace Audio {
class Mixer;
class SoundHandle;
}
 
namespace Agi {
 
#define SOUND_EMU_NONE  0
#define SOUND_EMU_PC    1
#define SOUND_EMU_PCJR  2
#define SOUND_EMU_MAC   3
#define SOUND_EMU_AMIGA 4
#define SOUND_EMU_APPLE2 5
#define SOUND_EMU_APPLE2GS 6
#define SOUND_EMU_COCO3 7
#define SOUND_EMU_MIDI 8
 
enum AgiSoundEmuType {
    AGI_SOUND_SAMPLE    = 0x0001,
    AGI_SOUND_MIDI      = 0x0002,
    AGI_SOUND_4CHN      = 0x0008,
    AGI_SOUND_APPLE2    = 0xffff,
    AGI_SOUND_COCO3     = 0xfffe
};
 
class SoundMgr;
 
class SoundGen {
public:
    SoundGen(AgiBase *vm, Audio::Mixer *pMixer);
    virtual ~SoundGen();
 
    virtual void play(int resnum) = 0;
    virtual void stop() = 0;
 
    AgiBase *_vm;
 
    Audio::Mixer *_mixer;
    Audio::SoundHandle *_soundHandle;
 
    uint32 _sampleRate;
};
 
class AgiSound {
public:
    AgiSound(byte resourceNr, byte *data, uint32 length, uint16 type) :
        _resourceNr(resourceNr),
        _data(data),
        _length(length),
        _type(type),
        _isPlaying(false) {}
 
    virtual ~AgiSound()      { free(_data); }
 
    virtual void play()      { _isPlaying = true; }
    virtual void stop()      { _isPlaying = false; }
    virtual bool isPlaying() { return _isPlaying; }
    byte *getData()          { return _data; }
    uint32 getLength()       { return _length; }
    virtual uint16 type()    { return _type; }
    virtual bool isValid()   { return true; }
 
    static AgiSound *createFromRawResource(uint8 *data, uint32 len, int resnum, int soundemu, bool isAgiV1);
 
protected:
    byte _resourceNr;
    byte *_data;
    uint32 _length;
    uint16 _type;
    bool _isPlaying;
};
 
class PCjrSound : public AgiSound {
public:
    PCjrSound(byte resourceNr, byte *data, uint32 length, uint16 type);
    const uint8 *getVoicePointer(uint voiceNum);
};
 
class SoundMgr {
 
public:
    SoundMgr(AgiBase *agi, Audio::Mixer *pMixer);
    ~SoundMgr();
 
    void unloadSound(int);
    void startSound(int, int);
    void stopSound();
 
    void soundIsFinished();
    bool isPlaying() const { return _playingSound != -1; }
 
private:
    int _endflag;
    AgiBase *_vm;
 
    SoundGen *_soundGen;
 
    int _playingSound;
};
 
} // End of namespace Agi
 
#endif /* AGI_SOUND_H */