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| 1 | harbaum | 1 | /* |
| 2 | * Copyright (C) 2008 Till Harbaum <till@harbaum.org>. | ||
| 3 | * | ||
| 4 | * This file is based upon parts of gpsd/libgps | ||
| 5 | * | ||
| 6 | * This file is part of OSM2Go. | ||
| 7 | * | ||
| 8 | * OSM2Go is free software: you can redistribute it and/or modify | ||
| 9 | * it under the terms of the GNU General Public License as published by | ||
| 10 | * the Free Software Foundation, either version 3 of the License, or | ||
| 11 | * (at your option) any later version. | ||
| 12 | * | ||
| 13 | * OSM2Go is distributed in the hope that it will be useful, | ||
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| 16 | * GNU General Public License for more details. | ||
| 17 | * | ||
| 18 | * You should have received a copy of the GNU General Public License | ||
| 19 | * along with OSM2Go. If not, see <http://www.gnu.org/licenses/>. | ||
| 20 | * | ||
| 21 | */ | ||
| 22 | |||
| 23 | #ifndef GPS_H | ||
| 24 | #define GPS_H | ||
| 25 | |||
| 26 | #ifndef NAN | ||
| 27 | #define NAN (0.0/0.0) | ||
| 28 | #endif /* !NAN */ | ||
| 29 | |||
| 30 | #define MAXTAGLEN 8 /* maximum length of sentence tag name */ | ||
| 31 | #define MPS_TO_KNOTS 1.9438445 /* Meters per second to knots */ | ||
| 32 | |||
| 33 | struct gps_fix_t { | ||
| 34 | int mode; /* Mode of fix */ | ||
| 35 | #define MODE_NOT_SEEN 0 /* mode update not seen yet */ | ||
| 36 | #define MODE_NO_FIX 1 /* none */ | ||
| 37 | #define MODE_2D 2 /* good for latitude/longitude */ | ||
| 38 | #define MODE_3D 3 /* good for altitude/climb too */ | ||
| 39 | pos_t pos; /* Latitude/Longitude in degrees (valid if mode >= 2) */ | ||
| 40 | double eph; /* Horizontal position uncertainty, meters */ | ||
| 41 | }; | ||
| 42 | |||
| 43 | typedef unsigned int gps_mask_t; | ||
| 44 | |||
| 45 | struct gps_data_t { | ||
| 46 | gps_mask_t set; /* has field been set since this was last cleared? */ | ||
| 47 | #define LATLON_SET 0x00000008u | ||
| 48 | #define STATUS_SET 0x00000100u | ||
| 49 | #define MODE_SET 0x00000200u | ||
| 50 | #define SATELLITE_SET 0x00040000u | ||
| 51 | |||
| 52 | struct gps_fix_t fix; /* accumulated PVT data */ | ||
| 53 | |||
| 54 | /* GPS status -- always valid */ | ||
| 55 | int status; /* Do we have a fix? */ | ||
| 56 | #define STATUS_NO_FIX 0 /* no */ | ||
| 57 | #define STATUS_FIX 1 /* yes, without DGPS */ | ||
| 58 | #define STATUS_DGPS_FIX 2 /* yes, with DGPS */ | ||
| 59 | |||
| 60 | }; | ||
| 61 | |||
| 62 | #ifdef USE_HILDON | ||
| 63 | #include <gpsbt.h> | ||
| 64 | #include <gpsmgr.h> | ||
| 65 | #include <errno.h> | ||
| 66 | #endif | ||
| 67 | |||
| 68 | typedef struct gps_state_s { | ||
| 69 | #ifdef USE_HILDON | ||
| 70 | gpsbt_t context; | ||
| 71 | #endif | ||
| 72 | |||
| 73 | GThread* thread_p; | ||
| 74 | GMutex *mutex; | ||
| 75 | GnomeVFSInetConnection *iconn; | ||
| 76 | GnomeVFSSocket *socket; | ||
| 77 | |||
| 78 | struct gps_data_t gpsdata; | ||
| 79 | } gps_state_t; | ||
| 80 | |||
| 81 | void gps_init(appdata_t *appdata); | ||
| 82 | void gps_release(appdata_t *appdata); | ||
| 83 | pos_t *gps_get_pos(appdata_t *appdata); | ||
| 84 | |||
| 85 | #endif // GPS_H |