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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
#ifndef AGOS_SIMON1_ADLIB_H
#define AGOS_SIMON1_ADLIB_H
#include "audio/mididrv.h"
#include "audio/fmopl.h"
namespace AGOS {
class MidiDriver_Simon1_AdLib : public MidiDriver {
public:
MidiDriver_Simon1_AdLib(const byte *instrumentData);
virtual ~MidiDriver_Simon1_AdLib();
// MidiDriver API
virtual int open();
virtual bool isOpen() const;
virtual void close();
virtual void send(uint32 b);
virtual void setTimerCallback(void *timer_param, Common::TimerManager::TimerProc timer_proc);
virtual uint32 getBaseTempo();
virtual MidiChannel *allocateChannel() { return 0; }
virtual MidiChannel *getPercussionChannel() { return 0; }
private:
bool _isOpen;
OPL::OPL *_opl;
Common::TimerManager::TimerProc _timerProc;
void *_timerParam;
void onTimer();
void reset();
void resetOPLVoices();
void resetRhythm();
int _melodyVoices;
uint8 _amvdrBits;
bool _rhythmEnabled;
enum {
kNumberOfVoices = 11,
kNumberOfMidiChannels = 16
};
struct Voice {
Voice();
uint channel;
uint note;
uint instrTotalLevel;
uint instrScalingLevel;
uint frequency;
};
void resetVoices();
int allocateVoice(uint channel);
Voice _voices[kNumberOfVoices];
uint _midiPrograms[kNumberOfMidiChannels];
void noteOff(uint channel, uint note);
void noteOn(uint channel, uint note, uint velocity);
void noteOnRhythm(uint channel, uint note, uint velocity);
void controlChange(uint channel, uint controller, uint value);
void programChange(uint channel, uint program);
void setupInstrument(uint voice, uint instrument);
const byte *_instruments;
static const int _operatorMap[9];
static const int _operatorDefaults[8];
static const int _rhythmOperatorMap[5];
static const uint _rhythmInstrumentMask[5];
static const int _rhythmVoiceMap[5];
static const int _frequencyIndexAndOctaveTable[128];
static const int _frequencyTable[16];
struct RhythmMap {
int channel;
int program;
int note;
};
static const RhythmMap _rhythmMap[39];
};
} // End of namespace AGOS
#endif
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