GeopsyCore/GeopsySignalHeader.h
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00001 /***************************************************************************
00002 **
00003 **  This file is part of GeopsyCore.
00004 **
00005 **  This library is free software; you can redistribute it and/or
00006 **  modify it under the terms of the GNU Lesser General Public
00007 **  License as published by the Free Software Foundation; either
00008 **  version 2.1 of the License, or (at your option) any later version.
00009 **
00010 **  This file is distributed in the hope that it will be useful, but WITHOUT
00011 **  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
00012 **  FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
00013 **  License for more details.
00014 **
00015 **  You should have received a copy of the GNU Lesser General Public
00016 **  License along with this library; if not, write to the Free Software
00017 **  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
00018 **
00019 **  See http://www.geopsy.org for more information.
00020 **
00021 **  Created : 2009-08-26
00022 **  Authors :
00023 **    Marc Wathelet
00024 **    Marc Wathelet (LGIT, Grenoble, France)
00025 **
00026 ***************************************************************************/
00027 
00028 #ifndef GEOPSYSIGNALHEADER_H
00029 #define GEOPSYSIGNALHEADER_H
00030 
00031 #include <QtCore>
00032 #include "GeopsyCoreDLLExport.h"
00033 
00034 namespace GeopsyCore {
00035 
00036 #define GEOPSYSIGNAL_TAG "GeopsySignal   "
00037 #define GEOPSYSIGNAL_MAGICINT -2078964521
00038 #define GEOPSYSIGNAL_MAGICFLOAT -333.3333333e33
00039 #define GEOPSYSIGNAL_VERSION 2
00040 #define GEOPSYSIGNAL_HEADERSIZE 16+8+4*4
00041 
00042 #pragma pack(1)     // set alignment to 1 byte boundary
00043 
00044 class GEOPSYCORE_EXPORT GeopsySignalHeader
00045 {
00046 public:
00047   bool isValid();
00048 
00049   union {
00050     char raw [GEOPSYSIGNAL_HEADERSIZE];
00051     struct {
00052       char tag[16];
00053       double magicFloat;
00054       qint32 magicInt;
00055       qint32 version;
00056       qint32 offset;
00057       qint32 nSignals;
00058     } field;
00059     struct {  // File header version 1
00060       char tag[10];
00061       qint32 version;
00062       qint32 offset;
00063       qint32 nSignals;
00064     } compat1;
00065   };
00066 };
00067 
00068 #pragma pack()   // restore original alignment
00069 
00070 } // namespace GeopsyCore
00071 
00072 #endif // GEOPSYSIGNALHEADER_H
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