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/*
* Copyright (c) 2007 - 2023 by mod_tile contributors (see AUTHORS file)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; If not, see http://www.gnu.org/licenses/.
*/
#ifndef METATILE_H
#define METATILE_H
#include <stdlib.h>
#include "config.h"
#include "render_config.h"
#ifdef __cplusplus
#include <sstream>
extern "C" {
#endif
#define META_MAGIC "META"
#define META_MAGIC_COMPRESSED "METZ"
struct entry {
int offset;
int size;
};
struct meta_layout {
char magic[4];
int count; // METATILE ^ 2
int x, y, z; // lowest x,y of this metatile, plus z
struct entry index[]; // count entries
// Followed by the tile data
// The index offsets are measured from the start of the file
};
#ifdef __cplusplus
}
class metaTile
{
public:
metaTile(const std::string &xmlconfig, const std::string &options, int x, int y, int z);
void clear();
void set(int x, int y, const std::string &data);
const std::string get(int x, int y);
int xyz_to_meta_offset(int x, int y, int z);
void save(struct storage_backend *store);
void expire_tiles(int sock, const char *host, const char *uri);
private:
int x_, y_, z_;
std::string xmlconfig_;
std::string options_;
std::string tile[METATILE][METATILE];
static const int header_size = sizeof(struct meta_layout) + (sizeof(struct entry) * (METATILE * METATILE));
};
#endif
#endif
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