1 /* 2 =============================================================================== 3 4 FILE: field_gpstime.hpp 5 6 CONTENTS: 7 8 9 PROGRAMMERS: 10 11 martin.isenburg@rapidlasso.com - http://rapidlasso.com 12 uday.karan@gmail.com - Hobu, Inc. 13 14 COPYRIGHT: 15 16 (c) 2007-2014, martin isenburg, rapidlasso - tools to catch reality 17 (c) 2014, Uday Verma, Hobu, Inc. 18 19 This is free software; you can redistribute and/or modify it under the 20 terms of the GNU Lesser General Licence as published by the Free Software 21 Foundation. See the COPYING file for more information. 22 23 This software is distributed WITHOUT ANY WARRANTY and without even the 24 implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 25 26 CHANGE HISTORY: 27 28 =============================================================================== 29 */ 30 31 namespace lazperf 32 { 33 namespace detail 34 { 35 36 class Gpstime10Base 37 { 38 protected: 39 Gpstime10Base(); 40 41 bool have_last_; 42 models::arithmetic m_gpstime_multi, m_gpstime_0diff; 43 unsigned int last; 44 unsigned int next; 45 std::array<las::gpstime, 4> last_gpstime; 46 std::array<int, 4> last_gpstime_diff; 47 std::array<int, 4> multi_extreme_counter; 48 }; 49 50 class Gpstime10Compressor : public Gpstime10Base 51 { 52 public: 53 Gpstime10Compressor(encoders::arithmetic<OutCbStream>&); 54 55 const char *compress(const char *c); 56 57 private: 58 void init(); 59 60 encoders::arithmetic<OutCbStream>& enc_; 61 bool compressor_inited_; 62 compressors::integer ic_gpstime; 63 }; 64 65 class Gpstime10Decompressor : public Gpstime10Base 66 { 67 public: 68 Gpstime10Decompressor(decoders::arithmetic<InCbStream>&); 69 70 char *decompress(char *c); 71 72 private: 73 void init(); 74 75 decoders::arithmetic<InCbStream>& dec_; 76 bool decompressor_inited_; 77 decompressors::integer ic_gpstime; 78 }; 79 80 } // namespace detail 81 } // namespace lazperf 82