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100 lines
3.0 KiB
C++
100 lines
3.0 KiB
C++
/* ScummVM - Scumm Interpreter
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* Copyright (C) 2003-2004 The ScummVM project
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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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*
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* $Header$
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*
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*/
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#ifndef MUSICBASE_H
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#define MUSICBASE_H
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#include "stdafx.h"
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#include "common/scummsys.h"
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#include "common/system.h"
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class OSystem;
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namespace Sky {
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class Disk;
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#define FILES_PER_SECTION 4
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typedef struct {
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bool doReInit, doStopMusic;
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uint8 musicToProcess;
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} Actions;
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class ChannelBase {
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public:
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virtual void stopNote(void) = 0;
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virtual uint8 process(uint16 aktTime) = 0;
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virtual void updateVolume(uint16 pVolume) = 0;
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virtual bool isActive(void) = 0;
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private:
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};
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class MusicBase {
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public:
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MusicBase(Disk *pDisk, OSystem *system);
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virtual ~MusicBase(void);
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void loadSection(uint8 pSection);
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void musicCommand(uint16 command);
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void startMusic(uint16 param) { _onNextPoll.musicToProcess = param & 0xF; }; // 4
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bool musicIsPlaying(void);
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virtual void setVolume(uint8 volume) = 0;
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uint8 giveVolume(void) { return (uint8)_musicVolume; };
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uint8 giveCurrentMusic(void) { return _currentMusic; };
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protected:
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OSystem *_system;
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Disk *_skyDisk;
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uint8 *_musicData;
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uint8 _allowedCommands;
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uint16 _musicDataLoc;
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uint16 _driverFileBase;
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uint16 _musicVolume, _numberOfChannels;
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uint8 _currentMusic, _currentSection;
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uint8 _musicTempo0; // can be changed by music stream
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uint8 _musicTempo1; // given once per music
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uint32 _tempo; // calculated from musicTempo0 and musicTempo1
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uint32 _aktTime;
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Actions _onNextPoll;
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ChannelBase *_channels[10];
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OSystem::MutexRef _mutex;
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virtual void setupPointers(void) = 0;
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virtual void setupChannels(uint8 *channelData) = 0;
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void updateTempo(void);
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void loadNewMusic(void);
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//- functions from CommandTable @0x90 (the main interface)
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virtual void startDriver(void) = 0; // 0
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void StopDriver(void); // 1
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void setTempo(uint16 newTempo); // 2
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void pollMusic(); // 3
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void reinitFM(void) { _onNextPoll.doReInit = true; }; // 6
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void stopMusic(); // 7
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void setFMVolume(uint16 param); // 13
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};
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} // End of namespace Sky
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#endif //MUSICBASE_H
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