gad.h

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/*
 * (C) 2020 by sysmocom - s.f.m.c. GmbH <info@sysmocom.de>
 *
 * All Rights Reserved
 *
 * Author: Neels Hofmeyr <neels@hofmeyr.de>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation; either version 3 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 Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 */
 
#pragma once
 
#include <osmocom/gsm/protocol/gsm_23_032.h>
#include <osmocom/core/utils.h>
 
struct msgb;
 
struct osmo_gad_ell_point {
        int32_t lat;
        int32_t lon;
};
 
struct osmo_gad_ell_point_unc_circle {
        int32_t lat;
        int32_t lon;
        uint32_t unc;
};
 
struct osmo_gad_ell_point_unc_ellipse {
        int32_t lat;
        int32_t lon;
        uint32_t unc_semi_major;
        uint32_t unc_semi_minor;
        uint8_t major_ori;
        uint8_t confidence;
};
 
struct osmo_gad_polygon {
        uint8_t num_points;
        struct osmo_gad_ell_point point[15];
};
 
struct osmo_gad_ell_point_alt {
        int32_t lat;
        int32_t lon;
        int16_t alt;
};
 
struct osmo_gad_ell_point_alt_unc_ell {
        int32_t lat;
        int32_t lon;
        int16_t alt;
        uint32_t unc_semi_major;
        uint32_t unc_semi_minor;
        uint8_t major_ori;
        int32_t unc_alt;
        uint8_t confidence;
};
 
struct osmo_gad_ell_arc {
        int32_t lat;
        int32_t lon;
        uint32_t inner_r;
        uint32_t unc_r;
        uint16_t ofs_angle;
        uint16_t incl_angle;
        uint8_t confidence;
};
 
struct osmo_gad_ha_ell_point_alt_unc_ell {
        int32_t lat;
        int32_t lon;
        int32_t alt;
        uint32_t unc_semi_major;
        uint32_t unc_semi_minor;
        uint8_t major_ori;
        uint8_t h_confidence;
        int32_t unc_alt;
        uint8_t v_confidence;
};
 
struct osmo_gad {
        enum gad_type type;
        union {
                struct osmo_gad_ell_point ell_point;
                struct osmo_gad_ell_point_unc_circle ell_point_unc_circle;
                struct osmo_gad_ell_point_unc_ellipse ell_point_unc_ellipse;
                struct osmo_gad_polygon polygon;
                struct osmo_gad_ell_point_alt ell_point_alt;
                struct osmo_gad_ell_point_alt_unc_ell ell_point_alt_unc_ell;
                struct osmo_gad_ell_arc ell_arc;
                struct osmo_gad_ell_point_unc_ellipse ha_ell_point_unc_ellipse;
                struct osmo_gad_ha_ell_point_alt_unc_ell ha_ell_point_alt_unc_ell;
        };
};
 
struct osmo_gad_err {
        int rc;
        enum gad_type type;
        char *logmsg;
};
 
extern const struct value_string osmo_gad_type_names[];
static inline const char *osmo_gad_type_name(enum gad_type val)
{ return get_value_string(osmo_gad_type_names, val); }
 
int osmo_gad_raw_write(struct msgb *msg, const union gad_raw *gad_raw);
int osmo_gad_raw_read(union gad_raw *gad_raw, struct osmo_gad_err **err, void *err_ctx, const uint8_t *data, uint8_t len);
 
int osmo_gad_enc(union gad_raw *gad_raw, const struct osmo_gad *gad);
int osmo_gad_dec(struct osmo_gad *gad, struct osmo_gad_err **err, void *err_ctx, const union gad_raw *gad_raw);
 
int osmo_gad_to_str_buf(char *buf, size_t buflen, const struct osmo_gad *gad);
char *osmo_gad_to_str_c(void *ctx, const struct osmo_gad *gad);
 
uint32_t osmo_gad_enc_lat(int32_t deg_1e6);
int32_t osmo_gad_dec_lat(uint32_t lat);
uint32_t osmo_gad_enc_lon(int32_t deg_1e6);
int32_t osmo_gad_dec_lon(uint32_t lon);
uint8_t osmo_gad_enc_unc(uint32_t mm);
uint32_t osmo_gad_dec_unc(uint8_t unc);