diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/Makefile.am.drumgizmo | 1 | ||||
| -rw-r--r-- | src/memchecker.cc | 102 | ||||
| -rw-r--r-- | src/memchecker.h | 48 |
3 files changed, 151 insertions, 0 deletions
diff --git a/src/Makefile.am.drumgizmo b/src/Makefile.am.drumgizmo index 57b6362..3248702 100644 --- a/src/Makefile.am.drumgizmo +++ b/src/Makefile.am.drumgizmo @@ -18,6 +18,7 @@ DRUMGIZMO_SOURCES = \ $(top_srcdir)/src/events.cc \ $(top_srcdir)/src/instrument.cc \ $(top_srcdir)/src/instrumentparser.cc \ + $(top_srcdir)/src/memchecker.cc \ $(top_srcdir)/src/messagehandler.cc \ $(top_srcdir)/src/messagereceiver.cc \ $(top_srcdir)/src/midimapparser.cc \ diff --git a/src/memchecker.cc b/src/memchecker.cc new file mode 100644 index 0000000..b26603a --- /dev/null +++ b/src/memchecker.cc @@ -0,0 +1,102 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/*************************************************************************** + * memchecker.cc + * + * 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. + */ +#include "memchecker.h" + +#ifdef WIN32 + #define WIN32_LEAN_AND_MEAN + #include <windows.h> +#else + #include <sys/sysinfo.h> +#endif +#include <sndfile.h> +#include <hugin.hpp> + +bool Memchecker::enoughFreeMemory(const DrumKit& drumkit) const +{ + size_t freeMemory = calcFreeMemory(); + size_t neededMemory = calcNeededMemory(drumkit); + + return freeMemory >= neededMemory; +} + +size_t Memchecker::calcFreeMemory() const +{ + size_t free_memory(0); + + // Platform specific calculation of the amount of free memory. +#ifdef WIN32 + MEMORYSTATUSEX status; + status.dwLength = sizeof(status); + GlobalMemoryStatusEx(&status); + free_memory = status.ullAvailPhys; +#else + struct sysinfo sys_info; + sysinfo (&sys_info); + free_memory = sys_info.freeram * sys_info.mem_unit; +#endif + + DEBUG(memchecker, "Calculated %llu free memory.\n", (long long unsigned int)free_memory); + + return free_memory; +} + +size_t Memchecker::calcNeededMemory(const DrumKit& drumkit) const +{ + size_t needed_memory(0); + + // Calculate memory usage of all instruments of drumkit. + for(auto instrument : drumkit.instruments) + { + const auto& audiofiles = instrument->audiofiles; + + // Calculate memory usage of all audiofiles. + for(auto audiofile : audiofiles) + { + needed_memory += calcBytesPerChannel(audiofile->filename); + } + } + + DEBUG(memchecker, "Calculated %llu needed memory.\n", (long long unsigned int)needed_memory); + + return needed_memory; +} + +size_t Memchecker::calcBytesPerChannel(const std::string& filename) const +{ + SF_INFO sf_info; + + SNDFILE* f = sf_open(filename.c_str(), SFM_READ, &sf_info); + if(!f) + { + ERR(memchecker, "SNDFILE Error (%s): %s\n", filename.c_str(), sf_strerror(f)); + return 0; + } + + sf_close(f); + + return sf_info.frames * sizeof(sample_t); +} 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 <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; +}; |