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96 lines
2.5 KiB
C++
96 lines
2.5 KiB
C++
/* ScummVM - Scumm Interpreter
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* Copyright (C) 2006 The ScummVM project
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* Original ADL-Player source Copyright (C) 2004 by Dorian Gray
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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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* $Header$
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*
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*/
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#ifndef GOB_MUSIC_H
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#define GOB_MUSIC_H
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#include "sound/audiostream.h"
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#include "sound/fmopl.h"
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#include "gob/gob.h"
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namespace Gob {
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class GobEngine;
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class Music : public AudioStream {
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public:
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Music(GobEngine *vm);
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~Music();
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bool playing() { return _playing; }
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bool getLooping() { return _looping; }
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void setLooping(bool looping) { _looping = looping; }
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void startPlay(void);
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void stopPlay(void) { _playing = false; }
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void playTrack(const char *trackname);
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void playBgMusic(void);
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bool loadMusic(const char *filename);
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void unloadMusic(void);
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// AudioStream API
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int readBuffer(int16 *buffer, const int numSamples) {
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premixerCall(buffer, numSamples / 2);
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return numSamples;
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}
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bool isStereo() const { return true; }
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bool endOfData() const { return false; }
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int getRate() const { return _rate; }
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protected:
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static const char *_tracks[][2];
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static const char *_tracksToFiles[][2];
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static const unsigned char _operators[];
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static const unsigned char _volRegNums [];
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FM_OPL *_opl;
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byte *_data;
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byte *_playPos;
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uint32 _dataSize;
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uint32 _rate;
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short _freqs[25][12];
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byte _notes[11];
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byte _notCol[11];
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byte _notLin[11];
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bool _notOn[11];
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byte _pollNotes[16];
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uint32 _samplesTillPoll;
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bool _playing;
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bool _first;
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bool _ended;
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bool _looping;
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GobEngine *_vm;
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void premixerCall(int16 *buf, uint len);
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void writeOPL(byte reg, byte val);
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void setFreqs(void);
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void reset(void);
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void setVoices();
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void setVoice(byte voice, byte instr, bool set);
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void setKey(byte voice, byte note, bool on, bool spec);
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void setVolume(byte voice, byte volume);
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void pollMusic(void);
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};
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} // End of namespace Gob
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#endif
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