diff options
| author | Eric S. Raymond <esr@thyrsus.com> | 2011-05-31 07:49:00 -0400 |
|---|---|---|
| committer | Eric S. Raymond <esr@thyrsus.com> | 2011-05-31 07:49:00 -0400 |
| commit | 4e4ac8884e5469d3843f4a775559f22ff7c8d292 (patch) | |
| tree | c57964f522e6ff392c81894ffefc9c6f956f8cae /driver_aivdm.c | |
| parent | 0e98bf00b5a63798e30026d9198892b7c24c4c71 (diff) | |
| download | gpsd-4e4ac8884e5469d3843f4a775559f22ff7c8d292.tar.gz | |
In AIS, partial support for VTS-Generated/Synthetic Targets.
JSON parsing of string IDs won't work yet; code generator needs
some extension.
Diffstat (limited to 'driver_aivdm.c')
| -rw-r--r-- | driver_aivdm.c | 48 |
1 files changed, 39 insertions, 9 deletions
diff --git a/driver_aivdm.c b/driver_aivdm.c index 13416299..f7418b6a 100644 --- a/driver_aivdm.c +++ b/driver_aivdm.c @@ -455,12 +455,12 @@ bool aivdm_decode(const char *buf, size_t buflen, break; case 28: /* IMO289 - Route info - addressed */ ais->type6.dac1fid28.linkage = UBITS(88, 10); - ais->type6.dac1fid28.sender = UBITS(98, 3); - /* 5 bits of type e */ - ais->type6.dac1fid28.month = UBITS(106, 4); - ais->type6.dac1fid28.day = UBITS(110, 5); - ais->type6.dac1fid28.hour = UBITS(115, 5); - ais->type6.dac1fid28.minute = UBITS(120, 6); + ais->type6.dac1fid28.sender = UBITS(98, 3); + ais->type6.dac1fid28.rtype = UBITS(101, 5); + ais->type6.dac1fid28.month = UBITS(106, 4); + ais->type6.dac1fid28.day = UBITS(110, 5); + ais->type6.dac1fid28.hour = UBITS(115, 5); + ais->type6.dac1fid28.minute = UBITS(120, 6); ais->type6.dac1fid28.duration = UBITS(126, 18); ais->type6.dac1fid28.waycount = UBITS(144, 5); #define ARRAY_BASE 149 @@ -515,7 +515,7 @@ bool aivdm_decode(const char *buf, size_t buflen, case 7: /* Binary acknowledge */ case 13: /* Safety Related Acknowledge */ { - unsigned int u, mmsi[4]; + unsigned int mmsi[4]; if (ais_context->bitlen < 72 || ais_context->bitlen > 168) { gpsd_report(LOG_WARN, "AIVDM message type %d size is out of range (%zd).\n", ais->type, @@ -617,6 +617,36 @@ bool aivdm_decode(const char *buf, size_t buflen, /* skip 5 bits */ break; case 17: /* IMO289 - VTS-generated/synthetic targets */ +#define ARRAY_BASE 56 +#define ELEMENT_SIZE 122 + for (u = 0; ARRAY_BASE + (ELEMENT_SIZE*u) <= ais_context->bitlen; u++) { + struct target_t *tp = &ais->type8.dac1fid17.targets[u]; + int a = ARRAY_BASE + (ELEMENT_SIZE*u); + tp->idtype = UBITS(a + 0, 2); + switch (tp->idtype) { + case DAC1FID17_IDTYPE_MMSI: + tp->id.mmsi = UBITS(a + 2, 42); + break; + case DAC1FID17_IDTYPE_IMO: + tp->id.imo = UBITS(a + 2, 42); + break; + case DAC1FID17_IDTYPE_CALLSIGN: + break; + UCHARS(a+2, tp->id.callsign); + default: + UCHARS(a+2, tp->id.other); + break; + } + /* skip 4 bits */ + tp->lat = SBITS(a + 48, 24); + tp->lon = SBITS(a + 72, 25); + tp->course = UBITS(a + 97, 9); + tp->second = UBITS(a + 106, 6); + tp->speed = UBITS(a + 112, 10); + } + ais->type8.dac1fid17.ntargets = u; +#undef ARRAY_BASE +#undef ELEMENT_SIZE break; case 19: /* IMO289 - Marine Traffic Signal */ ais->type8.dac1fid19.linkage = UBITS(56, 10); @@ -624,10 +654,10 @@ bool aivdm_decode(const char *buf, size_t buflen, ais->type8.dac1fid19.lon = SBITS(186, 25); ais->type8.dac1fid19.lat = SBITS(211, 24); ais->type8.dac1fid19.status = UBITS(235, 2); - /* 5 bits of type e */ + ais->type8.dac1fid19.signal = UBITS(237, 5); ais->type8.dac1fid19.hour = UBITS(242, 5); ais->type8.dac1fid19.minute = UBITS(247, 6); - /* 5 bits of type e */ + ais->type8.dac1fid19.nextsignal = UBITS(253, 5); /* skip 102 bits */ break; case 21: /* IMO289 - Weather obs. report from ship */ |