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audio/softsynth/mt32/Tables.h

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+/* Copyright (C) 2003, 2004, 2005, 2006, 2008, 2009 Dean Beeler, Jerome Fisher
+ * Copyright (C) 2011-2022 Dean Beeler, Jerome Fisher, Sergey V. Mikayev
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU Lesser General Public License as published by
+ *  the Free Software Foundation, either version 2.1 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 Lesser General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Lesser General Public License
+ *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef MT32EMU_TABLES_H
+#define MT32EMU_TABLES_H
+
+#include "globals.h"
+#include "Types.h"
+
+namespace MT32Emu {
+
+class Tables {
+private:
+	Tables();
+	Tables(Tables &);
+	~Tables() {}
+
+public:
+	static const Tables &getInstance();
+
+	// Constant LUTs
+
+	// CONFIRMED: This is used to convert several parameters to amp-modifying values in the TVA envelope:
+	// - PatchTemp.outputLevel
+	// - RhythmTemp.outlevel
+	// - PartialParam.tva.level
+	// - expression
+	// It's used to determine how much to subtract from the amp envelope's target value
+	Bit8u levelToAmpSubtraction[101];
+
+	// CONFIRMED: ...
+	Bit8u envLogarithmicTime[256];
+
+	// CONFIRMED: ...
+	Bit8u masterVolToAmpSubtraction[101];
+
+	// CONFIRMED:
+	Bit8u pulseWidth100To255[101];
+
+	Bit16u exp9[512];
+	Bit16u logsin9[512];
+
+	const Bit8u *resAmpDecayFactor;
+}; // class Tables
+
+} // namespace MT32Emu
+
+#endif // #ifndef MT32EMU_TABLES_H