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jLynx 2023-05-19 08:16:05 +12:00 • committed by GitHub
parent 7aca7ce74d
commit 033c4e9a5b
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599 changed files with 70746 additions and 66896 deletions
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143
firmware/common/ais_packet.hpp
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@ -32,60 +32,56 @@
namespace ais {
struct DateTime {
uint16_t year;
uint8_t month;
uint8_t day;
uint8_t hour;
uint8_t minute;
uint8_t second;
uint16_t year;
uint8_t month;
uint8_t day;
uint8_t hour;
uint8_t minute;
uint8_t second;
};
template<size_t FieldSize, int32_t DegMax, uint32_t NAValue>
template <size_t FieldSize, int32_t DegMax, uint32_t NAValue>
struct LatLonBase {
constexpr LatLonBase(
) : LatLonBase { raw_not_available }
{
}
constexpr LatLonBase(
const int32_t raw
) : raw_ { raw }
{
}
constexpr LatLonBase()
: LatLonBase{raw_not_available} {
}
constexpr LatLonBase(
const LatLonBase& other
) : raw_ { other.raw_ }
{
}
LatLonBase& operator=( const LatLonBase &)=default;
constexpr LatLonBase(
const int32_t raw)
: raw_{raw} {
}
int32_t normalized() const {
return static_cast<int32_t>(raw() << sign_extend_shift) / (1 << sign_extend_shift);
}
constexpr LatLonBase(
const LatLonBase& other)
: raw_{other.raw_} {
}
int32_t raw() const {
return raw_;
}
LatLonBase& operator=(const LatLonBase&) = default;
bool is_not_available() const {
return raw() == raw_not_available;
}
int32_t normalized() const {
return static_cast<int32_t>(raw() << sign_extend_shift) / (1 << sign_extend_shift);
}
bool is_valid() const {
return (normalized() >= raw_valid_min) && (normalized() <= raw_valid_max);
}
int32_t raw() const {
return raw_;
}
private:
int32_t raw_;
bool is_not_available() const {
return raw() == raw_not_available;
}
static constexpr size_t sign_extend_shift = 32 - FieldSize;
bool is_valid() const {
return (normalized() >= raw_valid_min) && (normalized() <= raw_valid_max);
}
static constexpr int32_t raw_not_available = NAValue;
static constexpr int32_t raw_valid_min = -DegMax * 60 * 10000;
static constexpr int32_t raw_valid_max = DegMax * 60 * 10000;
private:
int32_t raw_;
static constexpr size_t sign_extend_shift = 32 - FieldSize;
static constexpr int32_t raw_not_available = NAValue;
static constexpr int32_t raw_valid_min = -DegMax * 60 * 10000;
static constexpr int32_t raw_valid_max = DegMax * 60 * 10000;
};
using Latitude = LatLonBase<27, 90, 0x3412140>;
@ -99,50 +95,49 @@ using TrueHeading = uint16_t;
using MMSI = uint32_t;
class Packet {
public:
constexpr Packet(
const baseband::Packet& packet
) : packet_ { packet },
field_ { packet_ }
{
}
public:
constexpr Packet(
const baseband::Packet& packet)
: packet_{packet},
field_{packet_} {
}
size_t length() const;
bool is_valid() const;
size_t length() const;
Timestamp received_at() const;
bool is_valid() const;
uint32_t message_id() const;
MMSI user_id() const;
MMSI source_id() const;
Timestamp received_at() const;
uint32_t read(const size_t start_bit, const size_t length) const;
uint32_t message_id() const;
MMSI user_id() const;
MMSI source_id() const;
std::string text(const size_t start_bit, const size_t character_count) const;
uint32_t read(const size_t start_bit, const size_t length) const;
DateTime datetime(const size_t start_bit) const;
std::string text(const size_t start_bit, const size_t character_count) const;
Latitude latitude(const size_t start_bit) const;
Longitude longitude(const size_t start_bit) const;
DateTime datetime(const size_t start_bit) const;
bool crc_ok() const;
Latitude latitude(const size_t start_bit) const;
Longitude longitude(const size_t start_bit) const;
private:
using Reader = FieldReader<baseband::Packet, BitRemapByteReverse>;
using CRCReader = FieldReader<baseband::Packet, BitRemapNone>;
const baseband::Packet packet_;
const Reader field_;
bool crc_ok() const;
const size_t fcs_length = 16;
private:
using Reader = FieldReader<baseband::Packet, BitRemapByteReverse>;
using CRCReader = FieldReader<baseband::Packet, BitRemapNone>;
size_t data_and_fcs_length() const;
size_t data_length() const;
const baseband::Packet packet_;
const Reader field_;
bool length_valid() const;
const size_t fcs_length = 16;
size_t data_and_fcs_length() const;
size_t data_length() const;
bool length_valid() const;
};
} /* namespace ais */
#endif/*__AIS_PACKET_H__*/
#endif /*__AIS_PACKET_H__*/