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/*
Support for Google Navigator tracklines (.trl).
Copyright (C) 2008 Olaf Klein, o.b.klein@gpsbabel.org
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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include "defs.h"
#define MYNAME "gnav_trl"
static
QVector<arglist_t> gnav_trl_args = {
};
struct gnav_trl_t {
uint32_t time;
float lat;
float lon;
uint32_t alt;
};
static gbfile* fin, *fout;
/*******************************************************************************
* %%% global callbacks called by gpsbabel main process %%% *
*******************************************************************************/
static void
gnav_trl_rd_init(const QString& fname)
{
fin = gbfopen_le(fname, "rb", MYNAME);
}
static void
gnav_trl_rw_init(const QString& fname)
{
fout = gbfopen_le(fname, "wb", MYNAME);
}
static void
gnav_trl_rd_deinit()
{
gbfclose(fin);
}
static void
gnav_trl_rw_deinit()
{
gbfclose(fout);
}
static double
read_altitude(void* ptr)
{
auto* i = (unsigned char*) ptr;
char buf[sizeof(float)];
le_write32(&buf, i[2] << 24 | i[1] << 16 | i[0] <<8 | i[3]);
return le_read_float(&buf);
}
static void
write_altitude(void* ptr, const float alt)
{
char buf[sizeof(float)];
auto* i = (unsigned char*) &buf;
le_write_float(&buf, alt);
le_write32(ptr, i[0] << 24 | i[3] << 16 | i[2] << 8 | i[1]);
}
static void
gnav_trl_read()
{
route_head* trk = nullptr;
while (! gbfeof(fin)) {
gnav_trl_t rec;
if (gbfread(&rec, sizeof(rec), 1, fin) != 1) {
fatal(MYNAME ": Unexpected EOF (end of file)!\n");
}
auto* wpt = new Waypoint;
wpt->SetCreationTime(le_read32(&rec.time));
wpt->latitude = le_read_float(&rec.lat);
wpt->longitude = le_read_float(&rec.lon);
wpt->altitude = read_altitude(&rec.alt);
if (trk == nullptr) {
trk = new route_head;
track_add_head(trk);
}
track_add_wpt(trk, wpt);
}
}
static void
gnav_trl_write_trkpt(const Waypoint* wpt)
{
gnav_trl_t rec;
le_write32(&rec.time, wpt->GetCreationTime().toTime_t());
le_write_float(&rec.lat, wpt->latitude);
le_write_float(&rec.lon, wpt->longitude);
if (wpt->altitude != unknown_alt) {
write_altitude(&rec.alt, wpt->altitude);
} else {
write_altitude(&rec.alt, 0);
}
gbfwrite(&rec, sizeof(rec), 1, fout);
}
static void
gnav_trl_write()
{
track_disp_all(nullptr, nullptr, gnav_trl_write_trkpt);
}
/**************************************************************************/
ff_vecs_t gnav_trl_vecs = {
ff_type_file,
{
ff_cap_none /* waypoints */,
(ff_cap)(ff_cap_read | ff_cap_write) /* tracks */,
ff_cap_none /* routes */
},
gnav_trl_rd_init,
gnav_trl_rw_init,
gnav_trl_rd_deinit,
gnav_trl_rw_deinit,
gnav_trl_read,
gnav_trl_write,
nullptr,
&gnav_trl_args,
CET_CHARSET_UTF8, 1 /* CET - do nothing ! */
, NULL_POS_OPS,
nullptr
};
/**************************************************************************/
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