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audio/softsynth/mt32/PartialManager.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_PARTIALMANAGER_H
+#define MT32EMU_PARTIALMANAGER_H
+
+#include "globals.h"
+#include "internals.h"
+#include "Types.h"
+
+namespace MT32Emu {
+
+class Part;
+class Partial;
+class Poly;
+class Synth;
+
+class PartialManager {
+private:
+	Synth *synth;
+	Part **parts;
+	Poly **freePolys;
+	Partial **partialTable;
+	Bit8u numReservedPartialsForPart[9];
+	Bit32u firstFreePolyIndex;
+	int *inactivePartials; // Holds indices of inactive Partials in the Partial table
+	Bit32u inactivePartialCount;
+
+	bool abortFirstReleasingPolyWhereReserveExceeded(int minPart);
+	bool abortFirstPolyPreferHeldWhereReserveExceeded(int minPart);
+
+public:
+	PartialManager(Synth *synth, Part **parts);
+	~PartialManager();
+	Partial *allocPartial(int partNum);
+	unsigned int getFreePartialCount();
+	void getPerPartPartialUsage(unsigned int perPartPartialUsage[9]);
+	bool freePartials(unsigned int needed, int partNum);
+	unsigned int setReserve(Bit8u *rset);
+	void deactivateAll();
+	bool produceOutput(int i, IntSample *leftBuf, IntSample *rightBuf, Bit32u bufferLength);
+	bool produceOutput(int i, FloatSample *leftBuf, FloatSample *rightBuf, Bit32u bufferLength);
+	bool shouldReverb(int i);
+	void clearAlreadyOutputed();
+	const Partial *getPartial(unsigned int partialNum) const;
+	Poly *assignPolyToPart(Part *part);
+	void polyFreed(Poly *poly);
+	void partialDeactivated(int partialIndex);
+}; // class PartialManager
+
+} // namespace MT32Emu
+
+#endif // #ifndef MT32EMU_PARTIALMANAGER_H