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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 2
* 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, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* $URL$
* $Id$
*
*/
#ifndef GOB_SOUND_SOUNDMIXER_H
#define GOB_SOUND_SOUNDMIXER_H
#include "common/mutex.h"
#include "common/frac.h"
#include "sound/audiostream.h"
#include "sound/mixer.h"
#include "gob/sound/sounddesc.h"
namespace Gob {
class SoundMixer : public Audio::AudioStream {
public:
SoundMixer(Audio::Mixer &mixer, Audio::Mixer::SoundType type);
~SoundMixer();
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);
bool isStereo() const { return false; }
bool endOfData() const { return _end; }
bool endOfStream() const { return false; }
int getRate() const { return _rate; }
protected:
Audio::Mixer *_mixer;
Audio::SoundHandle _handle;
Common::Mutex _mutex;
bool _16bit;
int _shift;
bool _end;
int8 *_data8;
int16 *_data16;
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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