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The major contributors provided their consent: DrMcCoy, Strangerke, sdelamarre, sev. The goal is to allow the re-release of this code under Switch, which is incompatible with pure GPL
102 lines
2.6 KiB
C++
102 lines
2.6 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 modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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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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*
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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, see <http://www.gnu.org/licenses/>.
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*
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*
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* This file is dual-licensed.
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* In addition to the GPLv3 license mentioned above, this code is also
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* licensed under LGPL 2.1. See LICENSES/COPYING.LGPL file for the
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* full text of the license.
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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 "audio/audiostream.h"
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#include "audio/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() override;
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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) override;
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bool isStereo() const override { return false; }
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bool endOfData() const override { return _end; }
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bool endOfStream() const override { return false; }
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int getRate() const override { 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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bool _end;
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byte *_data;
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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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