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/* ScummVM - Scumm Interpreter
* Copyright (C) 2003 The ScummVM project
* Copyright (C) 2003 Robert "LavosSpawn" Goeffringmann
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* $Header$
*
*/
#ifndef __SkyMusicDriver__
#define __SkyMusicDriver__
#include "stdafx.h"
#include "sound/fmopl.h"
#include "sound/mixer.h"
#include "common/engine.h"
#include "skychannel.h"
#include "disk.h"
#define MUSIC_BASE_FILE 60202 // usually 60200 ( + 0 for Roland and +2 for Adlib)
#define FILES_PER_SECTION 4
typedef struct {
bool doReInit, doStopMusic;
uint8 musicToProcess;
} Actions;
class SkyMusic {
public:
SkyMusic(SoundMixer *mixer, SkyDisk *pSkyDisk);
~SkyMusic(void);
//void loadData(uint8 *pMusicData);
void loadSectionMusic(uint8 pSection);
void musicCommand(uint16 command);
void startMusic(uint16 param) { _onNextPoll.musicToProcess = param & 0xF; }; // 4
private:
SoundMixer *_mixer;
SkyDisk *_skyDisk;
FM_OPL *_opl;
uint8 *_musicData;
uint8 *_initSequence;
uint8 _allowedCommands;
uint16 _musicDataLoc;
SkyChannel *_channels[10];
uint16 _musicVolume, _numberOfChannels;
uint8 _currentMusic;
uint8 _musicTempo0; // can be changed by music stream
uint8 _musicTempo1; // given once per music
uint32 _tempo; // calculated from musicTempo0 and musicTempo1
uint32 _aktTime;
uint32 _sampleRate, _nextMusicPoll;
Actions _onNextPoll;
void premixerCall(int16 *buf, uint len);
static void passMixerFunc(void *param, int16 *buf, uint len);
void updateTempo(void);
void loadNewMusic(void);
//- functions from CommandTable @0x90 (the main interface)
void startAdlibDriver(void); // 0
void StopDriver(void); // 1
void setTempo(uint16 newTempo); // 2
void pollMusic(); // 3
void reinitFM(void) { _onNextPoll.doReInit = true; }; // 6
void stopMusic(); // 7
void setFMVolume(uint16 param); // 13
};
#endif //__SkyMusicDriver__
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