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96 lines
2.1 KiB
C++
96 lines
2.1 KiB
C++
/*
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===============================================================================
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FILE: field_byte14.hpp
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CONTENTS:
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PROGRAMMERS:
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martin.isenburg@rapidlasso.com - http://rapidlasso.com
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uday.karan@gmail.com - Hobu, Inc.
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COPYRIGHT:
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(c) 2007-2014, martin isenburg, rapidlasso - tools to catch reality
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(c) 2014, Uday Verma, Hobu, Inc.
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This is free software; you can redistribute and/or modify it under the
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terms of the GNU Lesser General Licence as published by the Free Software
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Foundation. See the COPYING file for more information.
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This software is distributed WITHOUT ANY WARRANTY and without even the
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implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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CHANGE HISTORY:
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===============================================================================
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*/
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namespace lazperf
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{
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namespace detail
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{
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class Byte14Base
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{
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protected:
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struct ChannelCtx
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{
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int have_last_;
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las::byte14 last_;
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std::vector<models::arithmetic> byte_model_;
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ChannelCtx(size_t count) : have_last_(false), last_(count),
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byte_model_(count, models::arithmetic(256))
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{}
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};
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public:
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size_t count() const;
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protected:
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Byte14Base(size_t count);
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size_t count_;
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int last_channel_;
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std::array<ChannelCtx, 4> chan_ctxs_;
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std::vector<decoders::arithmetic<MemoryStream>> byte_dec_;
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};
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class Byte14Compressor : public Byte14Base
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{
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public:
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Byte14Compressor(OutCbStream& stream, size_t count);
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void writeSizes();
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void writeData();
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const char *compress(const char *buf, int& sc);
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private:
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OutCbStream& stream_;
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std::vector<bool> valid_;
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std::vector<encoders::arithmetic<MemoryStream>> byte_enc_;
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};
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class Byte14Decompressor : public Byte14Base
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{
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public:
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Byte14Decompressor(InCbStream& stream, size_t count);
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void dumpSums();
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void readSizes();
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void readData();
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char *decompress(char *buf, int& sc);
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private:
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InCbStream& stream_;
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std::vector<uint32_t> byte_cnt_;
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std::vector<decoders::arithmetic<MemoryStream>> byte_dec_;
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utils::Summer sumByte;
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};
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} // namespace detail
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} // namespace lazperf
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