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/*
* Copyright (C) 2010 Eric S. Raymond.
*
* This software is distributed under a BSD-style license. See the
* file "COPYING" in the top-level directory of the distribution for details.
*
*/
/* This simple program shows the basic functionality of the C++ wrapper class */
#include <iostream>
#include <getopt.h>
#include "../libgpsmm.h"
#include "../gpsdclient.c"
/* YES ---> ^^^^
Using .c rather than the .h to embed gpsd_source_spec() source here
so that it is compiled in C++ rather than C of the gps library
(otherwise fails to link as the signatures are unavailable/different)
*/
using namespace std;
/*
* We should get libgps_dump_state() from the client library, but
* scons has a bug; we can't get it to add -lgps to the link line,
* apparently because it doesn't honor parse_flags on a Program()
* build of a C++ file.
*/
static void libgps_dump_state(struct gps_data_t *collect)
{
/* no need to dump the entire state, this is a sanity check */
#ifndef USE_QT
(void)fprintf(stdout, "flags: (0x%04x) %s\n",
(unsigned int)collect->set, gps_maskdump(collect->set));
#endif
if (collect->set & ONLINE_SET)
(void)fprintf(stdout, "ONLINE: %lf\n", collect->online);
if (collect->set & TIME_SET)
(void)fprintf(stdout, "TIME: %lf\n", collect->fix.time);
if (collect->set & LATLON_SET)
(void)fprintf(stdout, "LATLON: lat/lon: %lf %lf\n",
collect->fix.latitude, collect->fix.longitude);
if (collect->set & ALTITUDE_SET)
(void)fprintf(stdout, "ALTITUDE: altitude: %lf U: climb: %lf\n",
collect->fix.altitude, collect->fix.climb);
if (collect->set & SPEED_SET)
(void)fprintf(stdout, "SPEED: %lf\n", collect->fix.speed);
if (collect->set & TRACK_SET)
(void)fprintf(stdout, "TRACK: track: %lf\n", collect->fix.track);
if (collect->set & CLIMB_SET)
(void)fprintf(stdout, "CLIMB: climb: %lf\n", collect->fix.climb);
if (collect->set & STATUS_SET)
(void)fprintf(stdout, "STATUS: status: %d\n", collect->status);
if (collect->set & MODE_SET)
(void)fprintf(stdout, "MODE: mode: %d\n", collect->fix.mode);
if (collect->set & DOP_SET)
(void)fprintf(stdout,
"DOP: satellites %d, pdop=%lf, hdop=%lf, vdop=%lf\n",
collect->satellites_used, collect->dop.pdop,
collect->dop.hdop, collect->dop.vdop);
if (collect->set & VERSION_SET)
(void)fprintf(stdout, "VERSION: release=%s rev=%s proto=%d.%d\n",
collect->version.release,
collect->version.rev,
collect->version.proto_major,
collect->version.proto_minor);
if (collect->set & POLICY_SET)
(void)fprintf(stdout,
"POLICY: watcher=%s nmea=%s raw=%d scaled=%s timing=%s, devpath=%s\n",
collect->policy.watcher ? "true" : "false",
collect->policy.nmea ? "true" : "false",
collect->policy.raw,
collect->policy.scaled ? "true" : "false",
collect->policy.timing ? "true" : "false",
collect->policy.devpath);
if (collect->set & SATELLITE_SET) {
int i;
(void)fprintf(stdout, "SKY: satellites in view: %d\n",
collect->satellites_visible);
for (i = 0; i < collect->satellites_visible; i++) {
(void)fprintf(stdout, " %2.2d: %2.2d %3.3d %3.0f %c\n",
collect->skyview[i].PRN,
collect->skyview[i].elevation,
collect->skyview[i].azimuth,
collect->skyview[i].ss,
collect->skyview[i].used ? 'Y' : 'N');
}
}
if (collect->set & DEVICE_SET)
(void)fprintf(stdout, "DEVICE: Device is '%s', driver is '%s'\n",
collect->dev.path, collect->dev.driver);
#ifdef OLDSTYLE_ENABLE
if (collect->set & DEVICEID_SET)
(void)fprintf(stdout, "GPSD ID is %s\n", collect->dev.subtype);
#endif /* OLDSTYLE_ENABLE */
if (collect->set & DEVICELIST_SET) {
int i;
(void)fprintf(stdout, "DEVICELIST:%d devices:\n",
collect->devices.ndevices);
for (i = 0; i < collect->devices.ndevices; i++) {
(void)fprintf(stdout, "%d: path='%s' driver='%s'\n",
collect->devices.ndevices,
collect->devices.list[i].path,
collect->devices.list[i].driver);
}
}
}
int main(int argc, char *argv[])
{
uint looper = UINT_MAX;
// A typical C++ program may look to use a more native option parsing method
// such as boost::program_options
// But for this test program we don't want extra dependencies
// Hence use C style getopt for (build) simplicity
int option;
while ((option = getopt(argc, argv, "l:h?")) != -1) {
switch (option) {
case 'l':
looper = atoi(optarg);
break;
case '?':
case 'h':
default:
cout << "usage: " << argv[0] << " [-l n]\n";
exit(EXIT_FAILURE);
break;
}
}
struct fixsource_t source;
/* Grok the server, port, and device. */
if (optind < argc) {
gpsd_source_spec(argv[optind], &source);
} else
gpsd_source_spec(NULL, &source);
//gpsmm gps_rec("localhost", DEFAULT_GPSD_PORT);
gpsmm gps_rec(source.server, source.port);
if ( !((std::string)source.server == (std::string)GPSD_SHARED_MEMORY ||
(std::string)source.server == (std::string)GPSD_DBUS_EXPORT) ) {
if (gps_rec.stream(WATCH_ENABLE|WATCH_JSON) == NULL) {
cerr << "No GPSD running.\n";
return 1;
}
}
// Loop for the specified number of times
// If not specified then by default it loops until ll simply goes out of bounds
// So with the 5 second wait & a 4 byte uint - this equates to ~680 years
// - long enough for a test program :)
for (uint ll = 0; ll < looper; ll++) {
struct gps_data_t* newdata;
if (!gps_rec.waiting(5000000))
continue;
if ((newdata = gps_rec.read()) == NULL) {
cerr << "Read error.\n";
return 1;
} else {
libgps_dump_state(newdata);
}
}
cout << "Exiting\n";
return 0;
}
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