/***************************************************************************
 *            gps.h
 *
 *  Copyright  2010  Steffen Pohle
 *  steffen@gulpe.de
 ****************************************************************************/

/*
 *  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, write to the Free Software
 *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 */

/*
 * GPS Device Setup String:
 * SAMPLE: "serial:com1,19200"            serial, comport 1, 19200 baud (windows)
 * SAMPLE: "serial:/dev/ttyS0,19200"      serial, /dev/ttyS0, 19200 baud (linux)
 * SAMPLE: "file:gpsdata.save"            read gps data from file
 * SAMPLE: "file:sim,gpsdata.save"        read gps data from file, real time simulation 
 *                                        (needed for testing routeing)
 */

#ifndef _GPS_H_
#define _GPS_H_

#include <time.h>

#define GPS_DEVICELEN 256
#define GPS_ROUTEPOILEN 128
#define GPS_INBUFSIZE 2048
#define GPS_LINELEN 100
#define GPS_MAXSAT 32

#define GPS_KNOTEN2KMH 1.851984
#define GPS_LOOP_TIMEOUT 50

#define GPSF_LOG 0x0001
#define GPSF_ALL 0xFFFF

enum {
	GPS_T_NONE,
	GPS_T_SERIAL,
	GPS_T_ANDROID,
	GPS_T_FILE
};


struct gps_satelite {
	char deg_elev;
	int deg_north;
	char quality;
};


struct gps_routepoidata {
	float lon;
	float lat;
	char name[GPS_ROUTEPOILEN];	// name[0] == 0 means no valid data
};


struct gps_data {
	time_t time;
	float lon;
	float lat;
	float direction;
	float speed;
	char valid;
	char quality;
	char numofsatelites;
	float height;
	float hdop;
	struct gps_satelite sat[32];
	struct gps_routepoidata poi;
};


struct gps_routedata {
	time_t time;
	float lon;
	float lat;
	float speed;
};


struct gps_route {
	struct gps_routedata *data;
	struct gps_routepoidata *pdata;
	int cnt;
	int max;
	int pcnt;
	int pmax;
};


extern struct gps_route *gpsroute;
extern int gpsflags;

extern void gpsroute_exportgpx (struct gps_route *gr, char *filename);
extern void gpsroute_free (struct gps_route *gr);
extern struct gps_route *gpsroute_new ();
extern void gpsroute_addpos (struct gps_route *gr, float lon, float lat, float speed, time_t t);
extern void gpsroute_addpoi (struct gps_route *gr, float lon, float lat, char *text);


extern void gps_set_device (char *device);
extern char *gps_get_device ();
extern void gps_start ();
extern void gps_stop ();
extern struct gps_data *gps_loop ();
extern void gps_save_log (char *fname, char *text);
extern void gps_load_log (char *fn);
extern int gps_isrunning ();
extern struct gps_data *gps_getposition ();


/*
 * implemention of each build, i.E. gtk_gps.c or wince_gps.c
 * other stuff will be put into the gtk_port.h, wince_port.h files.
 */
extern void gps_serial_settings ();
extern int gps_serial_device_open ();
extern void gps_serial_device_close ();
extern int gps_serial_device_read (char *ptr, int ptrsize);

enum {
	GPSF_NONE,
	GPSF_PAUSE,
	GPSF_INIT,
	GPSF_RUN,
	GPSF_END
};

extern int gps_file_device_open ();
extern void gps_file_device_close ();
extern int gps_file_device_read (char *ptr, int ptrsize);
extern int gps_file_get_state ();
extern void gps_file_set_state (int state);
extern void gps_file_set_pos (int newpos);
extern int gps_file_get_pos ();
extern int gps_file_get_size ();

#ifdef ANDROID
extern int gps_android_device_open ();
extern void gps_android_device_close ();
extern int gps_android_device_read (char *ptr, int ptrsize);
#endif

#endif