1 files changed, 118 insertions, 0 deletions
diff --git a/engines/agos/drivers/simon1/adlib.h b/engines/agos/drivers/simon1/adlib.h
new file mode 100644
index 0000000000..6057bf1b16
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+++ b/engines/agos/drivers/simon1/adlib.h
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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];
+};
+
+MidiDriver *createMidiDriverSimon1AdLib(const char *instrumentFilename);
+
+} // End of namespace AGOS
+
+#endif