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https://github.com/openstreetmap/mod_tile.git
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dd90553536
_Also_: * Use `mapnik::freetype_engine::register_fonts` in `gen_tile.cpp` rather than recursing manually * Available since `Mapnik` v2 which is no longer supported
72 lines
1.9 KiB
C++
72 lines
1.9 KiB
C++
/*
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* Copyright (c) 2007 - 2023 by mod_tile contributors (see AUTHORS file)
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; If not, see http://www.gnu.org/licenses/.
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*/
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#ifndef METATILE_H
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#define METATILE_H
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#include <stdlib.h>
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#include "config.h"
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#include "render_config.h"
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#ifdef __cplusplus
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#include <sstream>
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extern "C" {
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#endif
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#define META_MAGIC "META"
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#define META_MAGIC_COMPRESSED "METZ"
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struct entry {
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int offset;
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int size;
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};
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struct meta_layout {
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char magic[4];
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int count; // METATILE ^ 2
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int x, y, z; // lowest x,y of this metatile, plus z
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struct entry index[]; // count entries
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// Followed by the tile data
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// The index offsets are measured from the start of the file
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};
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#ifdef __cplusplus
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}
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class metaTile
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{
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public:
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metaTile(const std::string &xmlconfig, const std::string &options, int x, int y, int z);
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void clear();
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void set(int x, int y, const std::string &data);
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const std::string get(int x, int y);
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int xyz_to_meta_offset(int x, int y, int z);
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void save(struct storage_backend *store);
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void expire_tiles(int sock, const char *host, const char *uri);
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private:
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int x_, y_, z_;
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std::string xmlconfig_;
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std::string options_;
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std::string tile[METATILE][METATILE];
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static const int header_size = sizeof(struct meta_layout) + (sizeof(struct entry) * (METATILE * METATILE));
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};
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#endif
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#endif
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