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 : 2007-10-12 00022 ** Authors : 00023 ** Marc Wathelet 00024 ** Marc Wathelet (LGIT, Grenoble, France) 00025 ** 00026 ***************************************************************************/ 00027 00028 #ifndef GURALPCOMPRESSEDBLOCK_H 00029 #define GURALPCOMPRESSEDBLOCK_H 00030 00031 #include <QGpCoreTools.h> 00032 00033 #include "GeopsyCoreDLLExport.h" 00034 #include "TimeRange.h" 00035 #include "Signal.h" 00036 00037 namespace GeopsyCore { 00038 00039 class GEOPSYCORE_EXPORT GuralpCompressedBlock 00040 { 00041 TRANSLATIONS("GuralpCompressedBlock") 00042 public: 00043 GuralpCompressedBlock(); 00044 GuralpCompressedBlock(const GuralpCompressedBlock& o); 00045 ~GuralpCompressedBlock(); 00046 00047 void operator=(const GuralpCompressedBlock& o); 00048 bool operator==(const GuralpCompressedBlock& o) const; 00049 00050 enum StreamType {Data, MuxChannel, Status, ChannelData, BytePipe, Information, Unknown}; 00051 00052 inline bool readHeader(QFile& f); 00053 inline bool readBody(QFile& f); 00054 inline void skipBody(QFile& f); 00055 00056 bool parseHeader(const char * gcfHeader); 00057 bool parseBody(const char * gcfBody); 00058 00059 StreamType streamType() const; 00060 const char * streamTypeString() const; 00061 int nSamples() const {return _nSamples;} 00062 double samplingFrequency() const {return _samplingFrequency;} 00063 QString name() const {return _device;} 00064 QDateTime startTime() const {return _startTime;} 00065 TimeRange timeRange(const QDateTime& refTime) const; 00066 Signal::Components component() const; 00067 bool isData() const {return _component!='0' && _component!='I';} 00068 int compressionCode() {return _compressionCode;} 00069 int sample(int index) const {return _samples[index];} 00070 uint hash() const {return _hash;} 00071 00072 void debugPrint() const; 00073 private: 00074 inline static void base36ToAscii(qint32 b, char * str); 00075 uint _hash; 00076 char _systemID[7]; 00077 char _device[5]; 00078 char _component; 00079 char _channel; 00080 QDateTime _startTime; 00081 double _samplingFrequency; 00082 int _compressionCode; 00083 int _nSamples; 00084 int * _samples; 00085 }; 00086 00087 inline uint qHash(const GuralpCompressedBlock& b) { 00088 return b.hash(); 00089 } 00090 00091 inline bool GuralpCompressedBlock::readHeader(QFile& f) 00092 { 00093 // Read the 16 bytes header 00094 char header[16]; 00095 qint64 n=f.read(header, 16); 00096 if(n!=16) return false; 00097 return parseHeader(header); 00098 } 00099 00100 inline bool GuralpCompressedBlock::readBody(QFile& f) 00101 { 00102 char body[1008]; 00103 qint64 n=f.read(body,1008); 00104 if(n!=1008) return false; 00105 return parseBody(body); 00106 } 00107 00108 inline void GuralpCompressedBlock::skipBody(QFile& f) 00109 { 00110 f.seek(f.pos()+1008); // 1024-byte blocks less 16-byte header 00111 } 00112 00113 } // namespace GeopsyCore 00114 00115 #endif // GURALPCOMPRESSEDBLOCK_H
