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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 GOB_SOUND_ADLIB_H
#define GOB_SOUND_ADLIB_H
#include "common/mutex.h"
#include "audio/audiostream.h"
#include "audio/mixer.h"
#include "audio/fmopl.h"
namespace Gob {
class GobEngine;
class AdLib : public Audio::AudioStream {
public:
AdLib(Audio::Mixer &mixer);
virtual ~AdLib();
bool isPlaying() const;
int getIndex() const;
bool getRepeating() const;
void setRepeating(int32 repCount);
void startPlay();
void stopPlay();
virtual void unload();
// AudioStream API
int readBuffer(int16 *buffer, const int numSamples);
bool isStereo() const { return false; }
bool endOfData() const { return !_playing; }
bool endOfStream() const { return false; }
int getRate() const { return _rate; }
protected:
static const unsigned char _operators[];
static const unsigned char _volRegNums [];
Audio::Mixer *_mixer;
Audio::SoundHandle _handle;
FM_OPL *_opl;
Common::Mutex _mutex;
uint32 _rate;
byte *_data;
byte *_playPos;
uint32 _dataSize;
short _freqs[25][12];
byte _notes[11];
byte _notCol[11];
byte _notLin[11];
bool _notOn[11];
byte _pollNotes[16];
int _samplesTillPoll;
int32 _repCount;
bool _playing;
bool _first;
bool _ended;
bool _freeData;
int _index;
unsigned char _wait;
uint8 _tickBeat;
uint8 _beatMeasure;
uint32 _totalTick;
uint32 _nrCommand;
uint16 _pitchBendRangeStep;
uint16 _basicTempo, _tempo;
void writeOPL(byte reg, byte val);
void setFreqs();
void setKey(byte voice, byte note, bool on, bool spec);
void setVolume(byte voice, byte volume);
void pollMusic();
virtual void interpret() = 0;
virtual void reset();
virtual void rewind() = 0;
virtual void setVoices() = 0;
private:
void init();
};
class ADLPlayer : public AdLib {
public:
ADLPlayer(Audio::Mixer &mixer);
~ADLPlayer();
bool load(const char *fileName);
bool load(byte *data, uint32 size, int index = -1);
void unload();
protected:
void interpret();
void reset();
void rewind();
void setVoices();
void setVoice(byte voice, byte instr, bool set);
};
class MDYPlayer : public AdLib {
public:
MDYPlayer(Audio::Mixer &mixer);
~MDYPlayer();
bool loadMDY(const char *fileName);
bool loadMDY(Common::SeekableReadStream &stream);
bool loadTBR(const char *fileName);
bool loadTBR(Common::SeekableReadStream &stream);
void unload();
protected:
byte _soundMode;
byte *_timbres;
uint16 _tbrCount;
uint16 _tbrStart;
uint32 _timbresSize;
void interpret();
void reset();
void rewind();
void setVoices();
void setVoice(byte voice, byte instr, bool set);
void unloadTBR();
void unloadMDY();
private:
void init();
};
} // End of namespace Gob
#endif // GOB_SOUND_ADLIB_H
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