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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.
*
* $URL$
* $Id$
*
*/
#ifndef IGOR_MIDI_H
#define IGOR_MIDI_H
#include "common/util.h"
#include "common/mutex.h"
#include "sound/fmopl.h"
#include "sound/mididrv.h"
#include "sound/midiparser.h"
#include "sound/softsynth/emumidi.h"
namespace Igor {
enum {
kAdlibCarrier = 0,
kAdlibModulator
};
struct AdlibInstrument {
uint8 chr[2];
uint8 scale[2];
uint8 attack[2];
uint8 sustain[2];
uint8 waveSel[2];
uint8 feedback;
};
class MidiParser_CTMF : public MidiParser {
public:
enum {
kMaxInstruments = 16
};
MidiParser_CTMF();
~MidiParser_CTMF() {}
bool loadMusic(byte *data, uint32 size);
AdlibInstrument _instruments[kMaxInstruments];
int _instrumentsCount;
protected:
void decodeHeader(const uint8 *p);
void decodeAdlibInstrument(struct AdlibInstrument *ins, const uint8 *p);
void parseNextEvent(EventInfo &info);
private:
int _instrumentsDataOffset;
int _midiDataOffset;
int _ticksPerQuarter;
int _ticksPerSecond;
int _basicTempo;
};
class AdlibMidiDriver : public MidiDriver_Emulated {
public:
enum {
kAdlibChannelsCount = 18
};
AdlibMidiDriver(Audio::Mixer *mixer) : MidiDriver_Emulated(mixer) {}
~AdlibMidiDriver() {}
// MidiDriver
int open();
void close();
void send(uint32 b);
void metaEvent(byte type, byte *data, uint16 length) {}
void sysEx(const byte *msg, uint16 length) {}
MidiChannel *allocateChannel() { return 0; }
MidiChannel *getPercussionChannel() { return 0; }
// AudioStream
bool isStereo() const { return false; }
int getRate() const { return _mixer->getOutputRate(); }
// MidiDriver_Emulated
void generateSamples(int16 *buf, int len);
void setInstruments(AdlibInstrument *i) { _adlibInstruments = i; }
private:
void adlibWrite(int port, int value);
void adlibSetupCard();
void adlibTurnNoteOff(int channel, int note);
void adlibTurnNoteOn(int channel, int note, int velocity);
void adlibSetupInstrument(int channel, const AdlibInstrument &ins);
void adlibSetupPercussion(int channel, const AdlibInstrument &ins);
void adlibSetupNote(int channel, int note, int velocity);
void adlibEndNote(int channel);
void adlibSetVolume(int channel, int volume);
void adlibControlChange(int channel, int control, int param);
void adlibProgramChange(int channel, int num);
FM_OPL *_opl;
uint8 _adlibData[256];
bool _adlibRhythmMode;
struct {
int ch;
int note;
int lt;
} _adlibChannels[kAdlibChannelsCount];
int _adlibInstrumentsMappingTable[kAdlibChannelsCount];
AdlibInstrument *_adlibInstruments;
static const uint8 _adlibOperatorsTable[];
static const uint8 _adlibChannelsMappingTable[];
static const int16 _adlibNoteFreqTable[];
static const uint8 _adlibPercussionsMappingTable[];
};
class IgorEngine;
class MidiPlayer {
public:
MidiPlayer(IgorEngine *vm);
~MidiPlayer();
void playMusic(uint8 *data, uint32 size);
void stopMusic();
private:
void updateTimer();
static void updateTimerCallback(void *p) { ((MidiPlayer *)p)->updateTimer(); }
MidiParser_CTMF *_parser;
AdlibMidiDriver *_driver;
Common::Mutex _mutex;
bool _isPlaying;
};
} // namespace Igor
#endif
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