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 M4_SOUND_PLATFORM_MIDI_H
#define M4_SOUND_PLATFORM_MIDI_H
 
#include "audio/mididrv_ms.h"
#include "audio/midiparser.h"
 
namespace M4 {
namespace Sound {
 
class Midi {
private:
    // Trigger to fire once the current track has finished, or -1 for none.
    // _pendingEndTrigger hands it from the audio thread to the main thread.
    int _midiEndTrigger;
    int _pendingEndTrigger;
 
    Common::Mutex _mutex;
 
    MusicType _deviceType;
 
    MidiDriver_Multisource *_driver;
    MidiParser *_midiParser;
    byte *_midiData;
 
    bool _paused;
 
protected:
    static void onTimer(void *data);
 
public:
    Midi();
    ~Midi();
 
    int open();
 
    void load(byte *in, int32 size);
    void play();
    void pause(bool pause);
    void stop();
    bool isPlaying();
    void startFade(uint16 duration, uint16 targetVolume);
    bool isFading();
 
    void syncSoundSettings();
 
    void midi_play(const char *name, int volume, bool loop, int trigger, int roomNum);
    void task();
    void loop();
    void midi_fade_volume(int targetVolume, int duration);
};
 
} // namespace Sound
 
void midi_play(const char *name, int volume, bool loop, int trigger, int roomNum);
void midi_loop();
void midi_stop();
void midi_fade_volume(int targetVolume, int duration);
 
} // namespace M4
 
#endif