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114 lines
2.7 KiB
C
114 lines
2.7 KiB
C
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/* 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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*/
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#ifndef SCUMM_PLAYER_V3M_H
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#define SCUMM_PLAYER_V3M_H
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#include "common/scummsys.h"
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#include "common/util.h"
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#include "common/mutex.h"
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#include "scumm/music.h"
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#include "audio/audiostream.h"
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#include "audio/mixer.h"
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class Mixer;
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namespace Scumm {
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class ScummEngine;
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/**
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* Scumm V3 Macintosh music driver.
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*/
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class Player_V3M : public Audio::AudioStream, public MusicEngine {
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public:
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Player_V3M(ScummEngine *scumm, Audio::Mixer *mixer);
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virtual ~Player_V3M();
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// MusicEngine API
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virtual void setMusicVolume(int vol);
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virtual void startSound(int sound);
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virtual void stopSound(int sound);
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virtual void stopAllSounds();
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virtual int getMusicTimer();
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virtual int getSoundStatus(int sound) const;
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// AudioStream API
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virtual int readBuffer(int16 *buffer, const int numSamples);
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virtual bool isStereo() const { return false; }
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virtual bool endOfData() const { return false; }
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virtual int getRate() const { return _sampleRate; }
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private:
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ScummEngine *const _vm;
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Common::Mutex _mutex;
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Audio::Mixer *const _mixer;
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Audio::SoundHandle _soundHandle;
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const uint32 _sampleRate;
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int _soundPlaying;
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void stopAllSounds_Internal();
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struct Instrument {
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byte *_data;
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uint32 _size;
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uint32 _rate;
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uint32 _loopStart;
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uint32 _loopEnd;
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byte _baseFreq;
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uint _pos;
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uint _subPos;
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void newNote() {
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_pos = 0;
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_subPos = 0;
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}
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void generateSamples(int16 *data, int pitchModifier, int volume, int numSamples);
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};
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struct Channel {
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Instrument _instrument;
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bool _looped;
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uint32 _length;
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const byte *_data;
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uint _pos;
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int _pitchModifier;
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byte _velocity;
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uint32 _remaining;
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bool _notesLeft;
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bool loadInstrument(Common::SeekableReadStream *stream);
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bool getNextNote(uint16 &duration, byte &value, byte &velocity);
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};
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Channel _channel[5];
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int _pitchTable[128];
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};
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} // End of namespace Scumm
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#endif
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