coming soon: reSIDfp core

src/engine/platform/sound/c64_fp/array.h

@@ -0,0 +1,73 @@
+/*
+ * This file is part of libsidplayfp, a SID player engine.
+ *
+ *  Copyright (C) 2011-2014 Leandro Nini
+ *
+ *  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 ARRAY_H
+#define ARRAY_H
+
+/**
+ * Counter.
+ */
+class counter
+{
+private:
+    unsigned int c;
+
+public:
+    counter() : c(1) {}
+    void increase() { ++c; }
+    unsigned int decrease() { return --c; }
+};
+
+/**
+ * Reference counted pointer to matrix wrapper, for use with standard containers.
+ */
+template<typename T>
+class matrix
+{
+private:
+    T* data;
+    counter* count;
+    const unsigned int x, y;
+
+public:
+    matrix(unsigned int x, unsigned int y) :
+        data(new T[x * y]),
+        count(new counter()),
+        x(x),
+        y(y) {}
+
+    matrix(const matrix& p) :
+        data(p.data),
+        count(p.count),
+        x(p.x),
+        y(p.y) { count->increase(); }
+
+    ~matrix() { if (count->decrease() == 0) { delete count; delete [] data; } }
+
+    unsigned int length() const { return x * y; }
+
+    T* operator[](unsigned int a) { return &data[a * y]; }
+
+    T const* operator[](unsigned int a) const { return &data[a * y]; }
+};
+
+typedef matrix<short> matrix_t;
+
+#endif