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audio/softsynth/fmtowns_pc98/pc98_audio.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 PC98_AUDIO_H
+#define PC98_AUDIO_H
+
+#include "common/scummsys.h"
+
+namespace Audio {
+class Mixer;
+}
+
+class PC98AudioCoreInternal;
+class PC98AudioPluginDriver {
+public:
+	enum EmuType {
+		kTypeTowns = 0,
+		kType26 = 1,
+		kType86 = 2
+	};
+
+	virtual ~PC98AudioPluginDriver() {}
+	virtual void timerCallbackA() {}
+	virtual void timerCallbackB() {}
+};
+
+class PC98AudioCore {
+public:
+	PC98AudioCore(Audio::Mixer *mixer, PC98AudioPluginDriver *driver, PC98AudioPluginDriver::EmuType type);
+	~PC98AudioCore();
+
+	bool init();
+	void reset();
+
+	void writeReg(uint8 part, uint8 regAddress, uint8 value);
+	uint8 readReg(uint8 part, uint8 regAddress);
+
+	void writePort(uint16 port, uint8 value);
+	uint8 readPort(uint16 port);
+
+	void setMusicVolume(int volume);
+	void setSoundEffectVolume(int volume);
+
+	// Defines the channels used as sound effect channels for the purpose of ScummVM GUI volume control.
+	// The first 6 bits are the 6 fm channels. The next 3 bits are ssg channels. The next bit is the rhythm channel.
+	void setSoundEffectChanMask(int mask);
+
+	void ssgSetVolume(int volume);
+
+	class MutexLock {
+		friend class PC98AudioCore;
+	public:
+		~MutexLock();
+	private:
+		MutexLock(PC98AudioCoreInternal *pc98int, int reverse = 0);
+		PC98AudioCoreInternal *_pc98int;
+		int _count;
+	};
+
+	MutexLock stackLockMutex();
+	MutexLock stackUnlockMutex();
+
+private:
+	PC98AudioCoreInternal *_internal;
+};
+
+#endif