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authorAndré Nusser <andre.nusser@googlemail.com>2016-01-24 00:47:42 +0100
committerAndré Nusser <andre.nusser@googlemail.com>2016-02-09 11:09:51 +0100
commit0070316e75f149d63eb0c0b00cbd9658bd04d503 (patch)
tree8b7c1738581b08eb67fc65694ba4a9ff3b68bae4 /src/memchecker.h
parent9f904b80a83465f945cb66cae4666d663b82c5d7 (diff)
Implement memchecker to ensure a drumkit fits into RAM.
It's a class that can calculate the available free RAM (or rather a rough estimation of it) and the size of the drumkit when loaded into RAM and provides a plugic method to check if the drumkit then fits into RAM.
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+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/***************************************************************************
+ * memchecker.h
+ *
+ * Sat Jan 16 18:27:52 CET 2016
+ * Copyright 2016 André Nusser
+ * andre.nusser@googlemail.com
+ ****************************************************************************/
+
+/*
+ * This file is part of DrumGizmo.
+ *
+ * DrumGizmo 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.
+ *
+ * DrumGizmo 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 DrumGizmo; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ */
+#pragma once
+
+#include "drumkit.h"
+
+#include <string>
+
+class Memchecker
+{
+public:
+ //! Checks if there is enough memory left to load drumkit into RAM.
+ //! \param drumkit The drumkit for which it is checked if there's enough memory left.
+ //! \return True iff there is enough memory left.
+ bool enoughFreeMemory(const DrumKit& drumkit) const;
+
+protected:
+ // Computes how much RAM (in bytes) is left.
+ size_t calcFreeMemory() const;
+ // Computes how much memory the drumkit takes when loaded into RAM (in bytes).
+ size_t calcNeededMemory(const DrumKit& drumkit) const;
+ // Computes the number of bytes per channel of <filename> using libsnd.
+ size_t calcBytesPerChannel(const std::string& filename) const;
+};