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/* ScummVM - Scumm Interpreter
* Copyright (C) 2006 The ScummVM project
* Original ADL-Player source Copyright (C) 2004 by Dorian Gray
*
* 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.
*
* $Header$
*
*/
#ifndef GOB_MUSIC_H
#define GOB_MUSIC_H
#include "sound/audiostream.h"
#include "sound/fmopl.h"
#include "gob/gob.h"
namespace Gob {
class GobEngine;
class Music : public AudioStream {
public:
Music(GobEngine *vm);
~Music();
bool playing() { return _playing; }
bool getLooping() { return _looping; }
void setLooping(bool looping) { _looping = looping; }
void startPlay(void);
void stopPlay(void) { _playing = false; }
bool loadMusic(const char *filename);
void unloadMusic(void);
// AudioStream API
int readBuffer(int16 *buffer, const int numSamples) {
premixerCall(buffer, numSamples / 2);
return numSamples;
}
bool isStereo() const { return true; }
bool endOfData() const { return false; }
int getRate() const { return _rate; }
protected:
static const unsigned char _operators[];
static const unsigned char _volRegNums [];
FM_OPL *_opl;
byte *_data;
byte *_playPos;
uint32 _dataSize;
uint32 _rate;
short _freqs[25][12];
byte _notes[11];
byte _notCol[11];
byte _notLin[11];
bool _notOn[11];
byte _pollNotes[16];
uint32 _samplesTillPoll;
bool _playing;
bool _first;
bool _ended;
bool _looping;
GobEngine *_vm;
void premixerCall(int16 *buf, uint len);
void writeOPL(byte reg, byte val);
void setFreqs(void);
void reset(void);
void setVoices();
void setVoice(byte voice, byte instr, bool set);
void setKey(byte voice, byte note, bool on, bool spec);
void setVolume(byte voice, byte volume);
void pollMusic(void);
};
} // End of namespace Gob
#endif
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