mpu401.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 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() override;
    byte getNumber() override { return _channel; }
    void release() override { _allocated = false; }

    void send(uint32 b) override;

    // Regular messages
    void noteOff(byte note) override;
    void noteOn(byte note, byte velocity) override;
    void programChange(byte program) override;
    void pitchBend(int16 bend) override;

    // Control Change messages
    void controlChange(byte control, byte value) override;
    void pitchBendFactor(byte value) override;

    // SysEx messages
    void sysEx_customInstrument(uint32 type, const byte *instr, uint32 datasize) override {}

    // 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();

    void close() override;
    void setTimerCallback(void *timer_param, Common::TimerManager::TimerProc timer_proc) override;
    uint32 getBaseTempo(void) override { return 10000; }
    uint32 property(int prop, uint32 param) override;

    MidiChannel *allocateChannel() override;
    MidiChannel *getPercussionChannel() override { return &_midi_channels[9]; }
};


#endif