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audio/softsynth/fmtowns_pc98/towns_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 TOWNS_AUDIO_H
+#define TOWNS_AUDIO_H
+
+namespace Audio {
+class Mixer;
+}
+
+class TownsAudioInterfaceInternal;
+
+class TownsAudioInterfacePluginDriver {
+public:
+	virtual ~TownsAudioInterfacePluginDriver() {}
+	virtual void timerCallback(int timerId) = 0;
+};
+
+class TownsAudioInterface {
+public:
+	TownsAudioInterface(Audio::Mixer *mixer, TownsAudioInterfacePluginDriver *driver, bool externalMutex = false);
+	~TownsAudioInterface();
+
+	enum ErrorCode {
+		kSuccess = 0,
+		kInvalidChannel,
+		kUnavailable,
+		kArgumentOutOfRange,
+		kNotImplemented,
+		kOutOfWaveMemory,
+		kInvalidWaveTable,
+		kChannelNotReserved,
+		kNoteOutOfRangeForInstrument,
+		kNoMatchingWaveTable,
+		kDuplicateWaveTable
+	};
+
+	bool init();
+
+	ErrorCode callback(int command, ...);
+
+	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 8 bits are pcm channels.
+	void setSoundEffectChanMask(int mask);
+
+private:
+	TownsAudioInterfaceInternal *_intf;
+};
+
+#endif