soundblaster.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_SOUNDBLASTER_H
#define GOB_SOUND_SOUNDBLASTER_H

#include "common/mutex.h"

#include "gob/sound/soundmixer.h"

namespace Audio {
class Mixer;
}

namespace Gob {

class SoundDesc;

class SoundBlaster : public SoundMixer {
public:
    SoundBlaster(Audio::Mixer &mixer);
    ~SoundBlaster() override;

    void playSample(SoundDesc &sndDesc, int16 repCount,
            int16 frequency, int16 fadeLength = 0);
    void stopSound(int16 fadeLength, SoundDesc *sndDesc = 0);

    void playComposition(const int16 *composition, int16 freqVal,
            SoundDesc *sndDescs = 0, int8 sndCount = 60);
    void stopComposition();
    void endComposition();

    void repeatComposition(int32 repCount);

protected:
    Common::Mutex _mutex;

    SoundDesc *_compositionSamples;
    int8 _compositionSampleCount;
    int16 _composition[50];
    int8 _compositionPos;

    int32 _compositionRepCount;

    SoundDesc *_curSoundDesc;

    void setSample(SoundDesc &sndDesc, int16 repCount,
            int16 frequency, int16 fadeLength) override;
    void checkEndSample() override;
    void endFade() override;

    void nextCompositionPos();
};

} // End of namespace Gob

#endif // GOB_SOUND_SOUNDBLASTER_H