XEEN: Beginnings of Music class

1 files changed, 83 insertions, 0 deletions

diff --git a/engines/xeen/music.h b/engines/xeen/music.h
new file mode 100644
index 0000000000..202f8ba982
--- /dev/null
+++ b/engines/xeen/music.h
@@ -0,0 +1,83 @@
+/* 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 2
+ * 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+
+#ifndef XEEN_MUSIC_H
+#define XEEN_MUSIC_H
+
+#include "audio/fmopl.h"
+#include "audio/mixer.h"
+#include "common/array.h"
+#include "common/mutex.h"
+#include "common/queue.h"
+
+namespace OPL {
+	class OPL;
+}
+
+namespace Xeen {
+
+struct RegisterValue {
+	uint8 _regNum;
+	uint8 _value;
+
+	RegisterValue(int regNum, int value) {
+		_regNum = regNum; _value = value;
+	}
+};
+
+class Music {
+private:
+	OPL::OPL *_opl;
+	Common::Mutex _driverMutex;
+	Common::Queue<RegisterValue> _queue;
+	const byte *_effectsData;
+	Common::Array<uint16> _effectsOffsets;
+private:
+	/**
+	 * Loads effects data that was embedded in the music driver
+	 */
+	void loadEffectsData();
+
+	/**
+	 * Timer function for OPL
+	 */
+	void onTimer();
+
+	/**
+	 * Flushes any pending writes to the OPL
+	 */
+	void flush();
+
+	/**
+	 * Updates any playing music
+	 */
+	void update();
+protected:
+	Audio::Mixer *_mixer;
+public:
+	Music(Audio::Mixer *mixer);
+	~Music();
+};
+
+} // End of namespace Xeen
+
+#endif /* XEEN_MUSIC_H */