mt32.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 AGOS_DRIVERS_ACCOLADE_MT32_H
#define AGOS_DRIVERS_ACCOLADE_MT32_H

#include "audio/mt32gm.h"

namespace AGOS {

class MidiDriver_Accolade_MT32 : public MidiDriver_MT32GM {
protected:
    static const uint8 SFX_PROGRAM_BASE = 0x75;
    static const uint8 SYSEX_INSTRUMENT_ASSIGNMENT[7];

public:
    MidiDriver_Accolade_MT32();

    int open(MidiDriver *driver, bool nativeMT32) override;
    using MidiDriver_MT32GM::send;
    void send(int8 source, uint32 b) override;

    int8 mapSourceChannel(uint8 source, uint8 dataChannel) override;
    void deinitSource(uint8 source) override;

    // Read the specified data from INSTR.DAT or MUSIC.DRV.
    void readDriverData(byte *driverData, uint16 driverDataSize, bool isMusicDrv);

    // Loads the specified instrument for the specified instrument source.
    void loadSfxInstrument(uint8 source, byte *instrumentData);
    // Changes the channel assigned to the specified SFX source to the SFX
    // program number.
    void changeSfxInstrument(uint8 source);

protected:
    // simple mapping between MIDI channel and MT32 channel
    byte _channelRemapping[16];
    // simple mapping between MIDI instruments and MT32 instruments
    byte _instrumentRemapping[128];

    // Indicates if a MIDI channel is locked by an SFX source and unavailable
    // for music.
    bool _channelLocks[MIDI_CHANNEL_COUNT];
};

} // End of namespace AGOS

#endif