e7c3d04309
format all files Revert "format all files" This reverts commit 95d5812e49e7f916b68e786596f5a8eb5bcac414. Revert "format some files" This reverts commit ed3c8762d4d828b2b28e7b18809fc33f4f8ccaf5. format all files fix formatting in dir include fix formatting of debug macro
85 lines
2.8 KiB
C++
85 lines
2.8 KiB
C++
/*****************************************************************************
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*
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* This file is part of Mapnik (c++ mapping toolkit)
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*
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* Copyright (C) 2021 Artem Pavlenko
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*****************************************************************************
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*
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* Initially developed by Sandro Santilli <strk@keybit.net> for CartoDB
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*
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*****************************************************************************/
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#ifndef PGRASTER_WKB_READER_HPP
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#define PGRASTER_WKB_READER_HPP
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// mapnik
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#include <mapnik/feature.hpp> // for raster_ptr
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#include <mapnik/geometry/box2d.hpp>
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enum pgraster_color_interp {
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// Automatic color interpretation:
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// uses grayscale for single band, rgb for 3 bands
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// rgba for 4 bands
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pgr_auto,
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// Grayscale interpretation
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pgr_grayscale,
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pgr_indexed,
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pgr_rgb,
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pgr_rgba
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};
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class pgraster_wkb_reader
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{
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public:
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pgraster_wkb_reader(const uint8_t* wkb, int size, int bnd = 0)
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: ptr_(wkb)
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, bandno_(bnd)
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{}
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mapnik::raster_ptr get_raster();
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/// @param bnd band number. If 0 (default) it'll try to read all bands
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/// with automatic color interpretation (rgb for 3 bands,
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/// rgba for 4 bands, grayscale for 1 band).
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/// Any other value results in pixel
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/// values being copied verbatim into the returned raster
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/// for interpretation by the caller.
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static mapnik::raster_ptr read(const uint8_t* wkb, int size, int bnd = 0)
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{
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pgraster_wkb_reader reader(wkb, size, bnd);
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return reader.get_raster();
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}
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private:
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mapnik::raster_ptr read_indexed(mapnik::box2d<double> const& bbox, uint16_t width, uint16_t height);
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mapnik::raster_ptr read_grayscale(mapnik::box2d<double> const& bbox, uint16_t width, uint16_t height);
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mapnik::raster_ptr read_rgba(mapnik::box2d<double> const& bbox, uint16_t width, uint16_t height);
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// int wkbsize_;
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// const uint8_t* wkb_;
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// const uint8_t* wkbend_;
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const uint8_t* ptr_;
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uint8_t endian_;
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int bandno_;
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uint16_t numBands_;
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uint16_t width_;
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uint16_t height_;
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};
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#endif // PGRASTER_WKB_READER_HPP
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