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92 lines
2.1 KiB
C++
92 lines
2.1 KiB
C++
/*
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===============================================================================
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FILE: field_rgb14.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 Rgb14Base
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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::rgb14 last_;
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models::arithmetic used_model_;
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std::array<models::arithmetic, 6> diff_model_;
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ChannelCtx() : have_last_{false}, used_model_(128),
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diff_model_{ models::arithmetic(256), models::arithmetic(256),
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models::arithmetic(256), models::arithmetic(256),
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models::arithmetic(256), models::arithmetic(256) }
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{}
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};
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std::array<ChannelCtx, 4> chan_ctxs_;
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int last_channel_ = -1;
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};
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class Rgb14Compressor : public Rgb14Base
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{
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public:
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Rgb14Compressor(OutCbStream& stream) : stream_(stream), rgb_enc_(false)
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{}
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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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encoders::arithmetic<MemoryStream> rgb_enc_;
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};
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class Rgb14Decompressor : public Rgb14Base
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{
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public:
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Rgb14Decompressor(InCbStream& stream) : stream_(stream)
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{}
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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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uint32_t rgb_cnt_;
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decoders::arithmetic<MemoryStream> rgb_dec_;
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utils::Summer sumRgb;
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};
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} // namespace detail
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} // namespace laszip
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