midi.h

/* 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