adlplayer.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 file is dual-licensed.
 * In addition to the GPLv3 license mentioned above, this code is also
 * licensed under LGPL 2.1. See LICENSES/COPYING.LGPL file for the
 * full text of the license.
 *
 */
 
#ifndef GOB_SOUND_ADLPLAYER_H
#define GOB_SOUND_ADLPLAYER_H
 
#include "common/array.h"
 
#include "gob/sound/adlib.h"
 
namespace Common {
    class SeekableReadStream;
}
 
namespace Gob {
 
class ADLPlayer : public AdLib {
public:
    ADLPlayer();
    ~ADLPlayer() override;
 
    bool load(Common::SeekableReadStream &adl);
    bool load(const byte *data, uint32 dataSize, int index = -1);
    void unload();
 
    int getIndex() const;
 
protected:
    // AdLib interface
    uint32 pollMusic(bool first) override;
    void rewind() override;
 
private:
    struct Timbre {
        uint16 startParams[kOperatorsPerVoice * kParamCount];
        uint16 params[kOperatorsPerVoice * kParamCount];
    };
 
    uint8 _soundMode;
 
    Common::Array<Timbre> _timbres;
 
    byte  *_songData;
    uint32 _songDataSize;
 
    const byte *_playPos;
 
    int _index;
 
    uint8  _modifyInstrument;
    uint16 _currentInstruments[kMaxVoiceCount];
 
 
    void setInstrument(int voice, int instrument);
 
    bool readHeader  (Common::SeekableReadStream &adl, int &timbreCount);
    bool readTimbres (Common::SeekableReadStream &adl, int  timbreCount);
    bool readSongData(Common::SeekableReadStream &adl);
};
 
} // End of namespace Gob
 
#endif // GOB_SOUND_ADLPLAYER_H