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103 lines
2.4 KiB
C++
103 lines
2.4 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* $URL$
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* $Id$
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*
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*/
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#ifndef GOB_SOUND_SOUNDMIXER_H
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#define GOB_SOUND_SOUNDMIXER_H
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#include "common/mutex.h"
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#include "common/frac.h"
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#include "sound/audiostream.h"
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#include "sound/mixer.h"
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namespace Gob {
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class SoundDesc;
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class SoundMixer : public Audio::AudioStream {
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public:
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SoundMixer(Audio::Mixer &mixer, Audio::Mixer::SoundType type);
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~SoundMixer();
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virtual void play(SoundDesc &sndDesc, int16 repCount,
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int16 frequency, int16 fadeLength = 0);
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virtual void stop(int16 fadeLength);
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bool isPlaying() const;
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char getPlayingSound() const;
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void setRepeating(int32 repCount);
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int readBuffer(int16 *buffer, const int numSamples);
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bool isStereo() const { return false; }
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bool endOfData() const { return _end; }
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bool endOfStream() const { return false; }
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int getRate() const { return _rate; }
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protected:
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Audio::Mixer *_mixer;
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Audio::SoundHandle _handle;
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Common::Mutex _mutex;
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bool _16bit;
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int _shift;
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bool _end;
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int8 *_data8;
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int16 *_data16;
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uint32 _length;
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uint32 _rate;
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int32 _freq;
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int32 _repCount;
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uint32 _offset;
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frac_t _offsetFrac;
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frac_t _offsetInc;
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int16 _cur;
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int16 _last;
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bool _fade;
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int32 _fadeVol;
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int32 _fadeVolStep;
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uint8 _fadeLength;
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uint32 _fadeSamples;
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uint32 _curFadeSamples;
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char _playingSound;
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virtual void setSample(SoundDesc &sndDesc, int16 repCount,
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int16 frequency, int16 fadeLength);
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virtual void checkEndSample();
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virtual void endFade();
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private:
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inline int16 getData(int offset);
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};
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} // End of namespace Gob
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#endif // GOB_SOUND_SOUNDMIXER_H
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