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/* 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_SOUNDMIXER_H
#define GOB_SOUND_SOUNDMIXER_H
#include "common/mutex.h"
#include "common/frac.h"
#include "audio/audiostream.h"
#include "audio/mixer.h"
namespace Gob {
class SoundDesc;
class SoundMixer : public Audio::AudioStream {
public:
SoundMixer(Audio::Mixer &mixer, Audio::Mixer::SoundType type);
~SoundMixer() override;
virtual void play(SoundDesc &sndDesc, int16 repCount,
int16 frequency, int16 fadeLength = 0);
virtual void stop(int16 fadeLength);
bool isPlaying() const;
char getPlayingSound() const;
void setRepeating(int32 repCount);
int readBuffer(int16 *buffer, const int numSamples) override;
bool isStereo() const override { return false; }
bool endOfData() const override { return _end; }
bool endOfStream() const override { return false; }
int getRate() const override { return _rate; }
protected:
Audio::Mixer *_mixer;
Audio::SoundHandle _handle;
Common::Mutex _mutex;
bool _16bit;
bool _end;
byte *_data;
uint32 _length;
uint32 _rate;
int32 _freq;
int32 _repCount;
uint32 _offset;
frac_t _offsetFrac;
frac_t _offsetInc;
int16 _cur;
int16 _last;
bool _fade;
int32 _fadeVol;
int32 _fadeVolStep;
uint8 _fadeLength;
uint32 _fadeSamples;
uint32 _curFadeSamples;
char _playingSound;
virtual void setSample(SoundDesc &sndDesc, int16 repCount,
int16 frequency, int16 fadeLength);
virtual void checkEndSample();
virtual void endFade();
private:
inline int16 getData(int offset);
};
} // End of namespace Gob
#endif // GOB_SOUND_SOUNDMIXER_H
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