Initial commit

engines/scumm/imuse/drivers/fmtowns.h

@@ -0,0 +1,86 @@
+/* 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 IMUSE_DRV_FMTOWNS_H
+#define IMUSE_DRV_FMTOWNS_H
+
+#include "audio/softsynth/fmtowns_pc98/towns_audio.h"
+#include "audio/mididrv.h"
+
+namespace Scumm {
+
+class TownsMidiOutputChannel;
+class TownsMidiInputChannel;
+class TownsMidiChanState;
+
+class IMuseDriver_FMTowns : public MidiDriver, public TownsAudioInterfacePluginDriver {
+friend class TownsMidiInputChannel;
+friend class TownsMidiOutputChannel;
+public:
+	IMuseDriver_FMTowns(Audio::Mixer *mixer);
+	~IMuseDriver_FMTowns() override;
+
+	int open() override;
+	bool isOpen() const override { return _isOpen; }
+	void close() override;
+
+	void send(uint32 b) override;
+
+	void setTimerCallback(void *timer_param, Common::TimerManager::TimerProc timer_proc) override;
+
+	uint32 getBaseTempo() override;
+	MidiChannel *allocateChannel() override;
+	MidiChannel *getPercussionChannel() override;
+
+	void timerCallback(int timerId) override;
+
+private:
+	void updateParser();
+	void updateOutputChannels();
+
+	TownsMidiOutputChannel *allocateOutputChannel(uint8 pri);
+
+	int randomValue(int para);
+
+	TownsMidiInputChannel **_channels;
+	TownsMidiOutputChannel **_out;
+	TownsMidiChanState *_chanState;
+	const uint8 _numParts;
+
+	Common::TimerManager::TimerProc _timerProc;
+	void *_timerProcPara;
+
+	TownsAudioInterface *_intf;
+
+	uint32 _tickCounter;
+	uint8 _allocCurPos;
+	uint8 _rand;
+
+	bool _isOpen;
+
+	uint8 *_operatorLevelTable;
+
+	const uint16 _baseTempo;
+};
+
+} // end of namespace Scumm
+
+#endif