void message_10::read_data(const raw & bits)
{
bits.get(repeat_indicator, 6, 2);
bits.get(mmsi, 8, 30);
// spare 38 - 39
bits.get(dest_mmsi, 40, 30);
// spare 70 - 71
}
void message_23::read_data(const raw & bits)
{
bits.get(repeat_indicator, 6, 2);
bits.get(mmsi, 8, 30);
// spare: 38 - 39
bits.get(ne_lon, 40, 18);
bits.get(ne_lat, 58, 17);
bits.get(sw_lon, 75, 18);
bits.get(sw_lat, 93, 17);
bits.get(station_type, 110, 4);
bits.get(shiptype, 114, 8);
// spare: 122 - 143
bits.get(txrx_mode, 144, 2);
bits.get(interval, 146, 4);
bits.get(quiet_time, 150, 4);
// spare: 154 - 159
}
/// Reads a string from the AIS message at the specified offset.
/// The string is decoded and returned.
///
/// @param[in] bits The AIS message.
/// @param[in] ofs The offset at which the string is being read.
/// @param[in] count_sixbits Number of sixbits to be read.
/// @return The decoded string.
///
/// @todo consider to hide characters after '@'
std::string binary_data::read_string(
const raw & bits, raw::size_type ofs, raw::size_type count_sixbits)
{
std::string s;
s.reserve(count_sixbits);
for (raw::size_type i = 0; i < count_sixbits; ++i) {
uint8_t sixbit = 0;
bits.get(sixbit, ofs + i * 6, 6);
s += decode_sixbit_ascii(sixbit);
}
return s;
}
void message_01::read_data(const raw & bits)
{
bits.get(repeat_indicator, 6, 2);
bits.get(mmsi, 8, 30);
bits.get(nav_status, 38, 4);
bits.get(rot, 42, 8);
bits.get(sog, 50, 10);
bits.get(position_accuracy, 60, 1);
bits.get(longitude_minutes, 61, 28);
bits.get(latitude_minutes, 89, 27);
bits.get(cog, 116, 12);
bits.get(hdg, 128, 9);
bits.get(timestamp, 136, 6);
bits.get(maneuver_indicator, 143, 2);
// spare: 145 - 147
bits.get(raim, 148, 1);
bits.get(radio_status, 149, 19);
}