musicdriver.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 GOT_MUSICDRIVER_H
#define GOT_MUSICDRIVER_H
 
#include "common/timer.h"
 
namespace Got {
 
class MusicDriver_Got {
public:
    MusicDriver_Got(uint8 timerFrequency);
    virtual ~MusicDriver_Got() { };
 
    virtual int open() = 0;
    bool isOpen() const;
    virtual void close() = 0;
 
    virtual void syncSoundSettings() = 0;
 
    virtual void send(uint16 b) = 0;
    virtual void stopAllNotes() = 0;
 
    virtual void setTimerFrequency(uint8 timerFrequency);
    void onTimer();
    void setTimerCallback(void *timer_param, Common::TimerManager::TimerProc timer_proc);
 
protected:
    // True if the driver has been successfully opened.
    bool _isOpen;
    // The number of timer callbacks per second.
    int _timerFrequency;
 
    // External timer callback
    void *_timer_param;
    Common::TimerManager::TimerProc _timer_proc;
};
 
class MusicDriver_Got_NULL : public MusicDriver_Got {
public:
    MusicDriver_Got_NULL(uint8 timerFrequency) : MusicDriver_Got(timerFrequency) { };
    ~MusicDriver_Got_NULL() { };
 
    int open() override;
    void close() override;
 
    void syncSoundSettings() override { };
    void send(uint16 b) override { };
    void stopAllNotes() override { };
 
    void setTimerFrequency(uint8 timerFrequency) override;
 
    static void timerCallback(void *data);
};
 
} // namespace Got
 
#endif