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audio/mpu401.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 3 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, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#ifndef AUDIO_MPU401_H
+#define AUDIO_MPU401_H
+
+#include "audio/mididrv.h"
+
+////////////////////////////////////////
+//
+// Common MPU401 implementation methods
+//
+////////////////////////////////////////
+
+class MidiChannel_MPU401 : public MidiChannel {
+
+private:
+	MidiDriver *_owner;
+	bool _allocated;
+	byte _channel;
+
+public:
+	MidiDriver *device();
+	byte getNumber() { return _channel; }
+	virtual void release() { _allocated = false; }
+
+	virtual void send(uint32 b);
+
+	// Regular messages
+	virtual void noteOff(byte note);
+	virtual void noteOn(byte note, byte velocity);
+	virtual void programChange(byte program);
+	virtual void pitchBend(int16 bend);
+
+	// Control Change messages
+	virtual void controlChange(byte control, byte value);
+	virtual void pitchBendFactor(byte value);
+
+	// SysEx messages
+	virtual void sysEx_customInstrument(uint32 type, const byte *instr, uint32 datasize) {}
+
+	// Only to be called by the owner
+	void init(MidiDriver *owner, byte channel);
+	bool allocate();
+};
+
+
+
+class MidiDriver_MPU401 : public MidiDriver {
+private:
+	MidiChannel_MPU401 _midi_channels[16];
+	Common::TimerManager::TimerProc _timer_proc;
+	uint16 _channel_mask;
+
+public:
+	MidiDriver_MPU401();
+	virtual ~MidiDriver_MPU401();
+
+	virtual void close();
+	virtual void setTimerCallback(void *timer_param, Common::TimerManager::TimerProc timer_proc);
+	virtual uint32 getBaseTempo(void) { return 10000; }
+	virtual uint32 property(int prop, uint32 param);
+
+	virtual MidiChannel *allocateChannel();
+	virtual MidiChannel *getPercussionChannel() { return &_midi_channels[9]; }
+};
+
+
+#endif