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/>.
 *
 */
 
/*
 * This code is based on original Soltys source code
 * Copyright (c) 1994-1995 Janusz B. Wisniewski and L.K. Avalon
 */
 
#ifndef CGE_SOUND_H
#define CGE_SOUND_H
 
#include "cge/fileio.h"
#include "audio/midiplayer.h"
#include "audio/mixer.h"
#include "common/memstream.h"
 
namespace Audio {
class RewindableAudioStream;
}
 
namespace CGE {
 
class CGEEngine;
 
// sample info
struct SmpInfo {
    const uint8  *_saddr;                              // address
    uint16  _slen;                                     // length
    uint16  _span;                                     // left/right pan (0-15)
    int     _counter;                                  // number of time the sample should be played
};
 
class DataCk {
    byte *_buf;
    int _ckSize;
public:
    DataCk(byte *buf, int bufSize);
    ~DataCk();
    inline const byte *addr() {
        return _buf;
    }
    inline int size() {
        return _ckSize;
    }
};
 
class Sound {
public:
    SmpInfo _smpinf;
 
    Sound(CGEEngine *vm);
    ~Sound();
    void open();
    void close();
    void play(DataCk *wav, int pan);
    int16 getRepeat();
    void setRepeat(int16 count);
    void stop();
private:
    int _soundRepeatCount;
    CGEEngine *_vm;
    Audio::SoundHandle _soundHandle;
    Audio::RewindableAudioStream *_audioStream;
 
    void sndDigiStart(SmpInfo *PSmpInfo);
    void sndDigiStop(SmpInfo *PSmpInfo);
};
 
class Fx {
    CGEEngine *_vm;
    struct Handler {
        int _ref;
        DataCk *_wav;
    } *_cache;
    int _size;
 
    DataCk *load(int idx, int ref);
    DataCk *loadWave(EncryptedStream *file);
    int find(int ref);
public:
    DataCk *_current;
 
    Fx(CGEEngine *vm, int size);
    ~Fx();
    void clear();
    void preload(int ref0);
    DataCk *operator[](int ref);
};
 
class MusicPlayer: public Audio::MidiPlayer {
private:
    CGEEngine *_vm;
    byte *_data;
    int _dataSize;
    bool _isGM;
 
    // Start MIDI File
    void sndMidiStart();
 
    // Stop MIDI File
    void sndMidiStop();
public:
    MusicPlayer(CGEEngine *vm);
    ~MusicPlayer() override;
 
    void loadMidi(int ref);
    void killMidi();
 
    void send(uint32 b) override;
    void sendToChannel(byte channel, uint32 b) override;
};
 
} // End of namespace CGE
 
#endif