/
message-handling.h
executable file
·104 lines (94 loc) · 3.55 KB
/
message-handling.h
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#
/*
* qt-1090 is based on and contains source code from dump1090
* Copyright (C) 2012 by Salvatore Sanfilippo <antirez@gmail.com>
* all rights acknowledged.
*
* Copyright (C) 2018
* Jan van Katwijk (J.vanKatwijk@gmail.com)
* Lazy Chair Computing
*
* This file is part of the qt-1090
*
* qt-1090 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.
*
* qt-1090 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 qt-1090; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef __MESSAGE_HANDLING__
#define __MESSAGE_HANDLING__
#include "adsb-constants.h"
#include "crc-handling.h"
class message {
public:
int msgtype; /* Downlink format # */
int errorbit; /* Bit corrected. -1 if no bit corrected. */
int heading;
int mesub; /* Extended squitter message subtype. */
int velocity; /* Computed from EW and NS velocity. */
private:
uint8_t msg [LONG_MSG_BITS / 8]; /* Binary message. */
int msgbits; /* Number of bits in message */
uint32_t crc; /* Message CRC */
int crcok; /* True if CRC was valid */
int aa1, aa2, aa3; /* ICAO Address bytes 1 2 and 3 */
icaoCache *icao_cache;
/* DF 11 */
int ca; /* Responder capabilities. */
/* DF 17 */
public:
int metype; /* Extended squitter message type. */
int raw_latitude; /* Non decoded latitude */
int raw_longitude; /* Non decoded longitude */
int altitude;
char flight[9]; /* 8 chars flight number. */
int fflag; /* 1 = Odd, 0 = Even CPR message. */
private:
int heading_is_valid;
int aircraft_type;
int tflag; /* UTC synchronized? */
int ew_dir; /* 0 = East, 1 = West. */
int ew_velocity; /* E/W velocity. */
int ns_dir; /* 0 = North, 1 = South. */
int ns_velocity; /* N/S velocity. */
int vert_rate_source; /* Vertical rate source. */
int vert_rate_sign; /* Vertical rate sign. */
int vert_rate; /* Vertical rate. */
/* DF4, DF5, DF20, DF21 */
int fs; /* Flight status for DF4,5,20,21 */
int dr; /* Request extraction of downlink request. */
int um; /* Request extraction of downlink request. */
int identity; /* 13 bits identity (Squawk). */
/* Fields used by multiple message types. */
int unit;
//
// operators
public:
message (int, icaoCache *, uint8_t *msg);
~message (void);
void displayMessage (bool);
uint32_t getAddr (void);
bool is_crcok (void);
private:
bool bruteForceAP (uint8_t *msg);
void setFlightName (uint8_t *msg);
void useModesMessage (void);
void recordExtendedSquitter (uint8_t *msg);
void print_msgtype_0 (void);
void print_msgtype_4_20 (void);
void print_msgtype_5_21 (void);
void print_msgtype_11 (void);
void print_msgtype_17 (void);
int decodeAC12Field (uint8_t *msg, int *unit);
int decodeAC13Field (uint8_t *msg, int *unit);
};
#endif