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engines/zvision/sound/midi.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 ZVISION_MIDI_H
+#define ZVISION_MIDI_H
+
+class MidiDriver;
+
+namespace ZVision {
+
+class MidiManager {
+public:
+	MidiManager();
+	~MidiManager();
+
+	void stop();
+	void noteOn(uint8 channel, uint8 noteNumber, uint8 velocity);
+	void noteOff(uint8 channel);
+	void setVolume(uint8 channel, uint8 volume);
+	void setBalance(uint8 channel, int8 balance);
+	void setPan(uint8 channel, int8 pan);
+	void setProgram(uint8 channel, uint8 prog);
+
+	int8 getFreeChannel();  // Negative if none available
+	bool isAvailable() const {
+		return _available;
+	}
+
+protected:
+	bool _available = false;
+	bool _mt32 = false;
+	struct chan {
+		bool playing;
+		uint8 note;
+
+		chan() : playing(false), note(0) {}
+	};
+	void send(uint8 status, uint8 data1 = 0x00, uint8 data2 = 0x00);
+	uint8 _startChannel = 0;
+	uint8 _maxChannels = 16;
+	MidiDriver *_driver;
+	chan _activeChannels[16];
+};
+
+}
+
+#endif