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engines/got/musicdriver.h

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+/* 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