From 0070316e75f149d63eb0c0b00cbd9658bd04d503 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Andr=C3=A9=20Nusser?= Date: Sun, 24 Jan 2016 00:47:42 +0100 Subject: 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. --- src/memchecker.h | 48 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 48 insertions(+) create mode 100644 src/memchecker.h (limited to 'src/memchecker.h') diff --git a/src/memchecker.h b/src/memchecker.h new file mode 100644 index 0000000..c3e13c2 --- /dev/null +++ b/src/memchecker.h @@ -0,0 +1,48 @@ +/* -*- 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 + +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 using libsnd. + size_t calcBytesPerChannel(const std::string& filename) const; +}; -- cgit v1.2.3