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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 SKY_MUSIC_ADLIBCHANNEL_H
#define SKY_MUSIC_ADLIBCHANNEL_H
#include "sky/music/musicbase.h"
#include "audio/fmopl.h"
namespace Sky {
typedef struct {
uint8 ad_Op1, ad_Op2;
uint8 sr_Op1, sr_Op2;
uint8 ampMod_Op1, ampMod_Op2;
uint8 waveSelect_Op1, waveSelect_Op2;
uint8 bindedEffect;
uint8 feedBack;
uint8 totOutLev_Op1, totOutLev_Op2;
uint8 scalingLevel;
uint8 pad1, pad2, pad3;
} InstrumentStruct;
typedef struct {
uint16 eventDataPtr;
int32 nextEventTime;
uint16 loopPoint;
uint8 adlibChannelNumber;
uint8 lastCommand;
bool channelActive;
uint8 note;
uint8 adlibReg1, adlibReg2;
InstrumentStruct *instrumentData;
uint8 assignedInstrument;
uint8 channelVolume;
uint8 padding; // field_12 / not used by original driver
uint8 tremoVibro;
uint8 freqOffset;
uint16 frequency;
} AdLibChannelType;
class AdLibChannel : public ChannelBase {
public:
AdLibChannel (FM_OPL *opl, uint8 *pMusicData, uint16 startOfData);
virtual ~AdLibChannel();
virtual uint8 process(uint16 aktTime);
virtual void updateVolume(uint16 pVolume);
virtual bool isActive();
private:
FM_OPL *_opl;
uint8 *_musicData;
AdLibChannelType _channelData;
InstrumentStruct *_instruments;
uint16 *_frequenceTable;
uint8 *_instrumentMap;
uint8 *_registerTable, *_opOutputTable;
uint8 *_adlibRegMirror;
// normal subs
void setRegister(uint8 regNum, uint8 value);
int32 getNextEventTime();
uint16 getNextNote(uint8 param);
void adlibSetupInstrument();
void setupInstrument(uint8 opcode);
void setupChannelVolume(uint8 volume);
void stopNote();
// Streamfunctions from Command90hTable
void com90_caseNoteOff(); // 0
void com90_stopChannel(); // 1
void com90_setupInstrument(); // 2
uint8 com90_updateTempo(); // 3
//void com90_dummy(); // 4
void com90_getFreqOffset(); // 5
void com90_getChannelVolume(); // 6
void com90_getTremoVibro(); // 7
void com90_loopMusic(); // 8
void com90_keyOff(); // 9
//void com90_error(); // 10
//void com90_doLodsb(); // 11
void com90_setLoopPoint(); // 12
//void com90_do_two_Lodsb(); // 13
};
} // End of namespace Sky
#endif //ADLIBCHANNEL_H
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