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AdsbWrapper.cpp
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AdsbWrapper.cpp
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//
// AdsbWrapper.cpp: ADSB decoding
//
// Copyright (c) 2019 Bruce Clay
// Portions of thei code was adapted from dump1090 and dump978
// Copyright (c) 2017 Oliver Jowett <[email protected]>
// This file is free software: you may copy, redistribute 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.
//
// This file 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.
//
#include <string.h>
#include <algorithm>
#include <time.h>
#include <QTime>
#include "AdsbWrapper.h"
#define CRC16 0x8005
uint16_t gen_crc16(const uint8_t *data, uint16_t size)
{
uint16_t out = 0;
int bits_read = 0, bit_flag;
/* Sanity check: */
if (data == NULL)
return 0;
while (size > 0)
{
bit_flag = out >> 15;
/* Get next bit: */
out <<= 1;
out |= (*data >> bits_read) & 1; // item a) work from the least significant bits
/* Increment bit counter: */
bits_read++;
if (bits_read > 7)
{
bits_read = 0;
data++;
size--;
}
/* Cycle check: */
if (bit_flag)
out ^= CRC16;
}
// item b) "push out" the last 16 bits
int i;
for (i = 0; i < 16; ++i) {
bit_flag = out >> 15;
out <<= 1;
if (bit_flag)
out ^= CRC16;
}
// item c) reverse the bits
uint16_t crc = 0;
i = 0x8000;
int j = 0x0001;
for (; i != 0; i >>= 1, j <<= 1) {
if (i & out) crc |= j;
}
return crc;
}
/*
std::map<int, std::string> AdsbWrapper::mFisbProductNameMap =
{
0, "METAR",
1, "TAF",
2, "SIGMET",
3, "Conv SIGMET",
4, "AIRMET",
5, "PIREP",
6, "Severe Wx",
7, "Winds Aloft",
8, "NOTAM", //"NOTAM (Including TFRs) and Service Status";
9, "D-ATIS", //"Aerodrome and Airspace – D-ATIS";
10, "Terminal Wx", //"Aerodrome and Airspace - TWIP";
11, "AIRMET", //"Aerodrome and Airspace - AIRMET";
12, "SIGMET", //"Aerodrome and Airspace - SIGMET/Convective SIGMET";
13, "SUA", //"Aerodrome and Airspace - SUA Status";
20, "METAR", //"METAR and SPECI";
21, "TAF", //"TAF and Amended TAF";
22, "SIGMET", //"SIGMET";
23, "Conv SIGMET", //"Convective SIGMET";
24, "AIRMET", //"AIRMET";
25, "PIREP", //"PIREP";
26, "Severe Wx", //"AWW";
27, "Winds Aloft", //"Winds and Temperatures Aloft";
51, "NEXRAD", //"National NEXRAD, Type 0 - 4 level";
52, "NEXRAD", //"National NEXRAD, Type 1 - 8 level (quasi 6-level VIP)";
53, "NEXRAD", //"National NEXRAD, Type 2 - 8 level";
54, "NEXRAD", //"National NEXRAD, Type 3 - 16 level";
55, "NEXRAD", //"Regional NEXRAD, Type 0 - low dynamic range";
56, "NEXRAD", //"Regional NEXRAD, Type 1 - 8 level (quasi 6-level VIP)";
57, "NEXRAD", //"Regional NEXRAD, Type 2 - 8 level";
58, "NEXRAD", //"Regional NEXRAD, Type 3 - 16 level";
59, "NEXRAD", //"Individual NEXRAD, Type 0 - low dynamic range";
60, "NEXRAD", //"Individual NEXRAD, Type 1 - 8 level (quasi 6-level VIP)";
61, "NEXRAD", //"Individual NEXRAD, Type 2 - 8 level";
62, "NEXRAD", //"Individual NEXRAD, Type 3 - 16 level";
63, "NEXRAD Regional", //"Global Block Representation - Regional NEXRAD, Type 4 – 8 level";
64, "NEXRAD CONUS", //"Global Block Representation - CONUS NEXRAD, Type 4 - 8 level";
81, "Tops", //"Radar echo tops graphic, scheme 1,16-level";
82, "Tops", //"Radar echo tops graphic, scheme 2,8-level";
83, "Tops", //"Storm tops and velocity";
101, "Lightning", //"Lightning strike type 1 (pixel level)";
102, "Lightning", //"Lightning strike type 2 (grid element level)";
151, "Lightning", //"Point phenomena, vector format";
201, "Surface", //"Surface conditions/winter precipitation graphic";
202, "Surface", //"Surface weather systems";
254, "G-AIRMET", //"AIRMET, SIGMET,Bitmap encoding";
351, "Time", //"System Time";
352, "Status", //"Operational Status";
353, "Status", //"Ground Station Status";
401, "Imagery", //"Generic Raster Scan Data Product APDU Payload Format Type 1";
402, "Text",
403, "Vector Imagery", //"Generic Vector Data Product APDU Payload Format Type 1";
404, "Symbols",
405, "Text",
411, "Text", //"Generic Textual Data Product APDU Payload Format Type 1";
412, "Symbols", //"Generic Symbolic Product APDU Payload Format Type 1";
413, "Text" //"Generic Textual Data Product APDU Payload Format Type 2";
};
*/
AdsbWrapper::AdsbWrapper()
{
// ClearAhrsData(mAhrsData);
// ClearHeartbeatInfo(mLatetestHeartbeat);
// ClearHeartbeatInfo(mTestHeartbeat);
mLastDataIndex = -1;
mLastCallsign = "none";
CrcInit();
}
///////////////////////////////////////////////////////////////////////////////
void AdsbWrapper::ClearAhrsData(struct ahrsDataRec &data)
{
data.msgId = 0;
data.subMsgId = 0;
data.roll = 0.0f;
data.pitch = 0.0f;
data.heading = 0.0f;
data.headingIsTrue = false;
data.indicatedAirspeed = 0.0f;
data.trueAirspeed = 0.0f;
};
///////////////////////////////////////////////////////////////////////////////
void AdsbWrapper::ClearHeartbeatInfo(struct heartbeatMsgRec &msg)
{
msg.msgId = 0;;
msg.statusByte1.statusByte = 0;
msg.statusByte2.statusByte = 0;
msg.timestamp = 0;
msg.msgCounts = 0;
msg.crc = 0;
}
///////////////////////////////////////////////////////////////////////////////
void AdsbWrapper::ClearTrafficDataList()
{
QList<struct trafficReportNumRec *> ::iterator infoIter;
infoIter = mAircraftInfoList.begin();
while (infoIter != mAircraftInfoList.end())
{
delete *infoIter;
infoIter++;
}
mAircraftInfoList.clear();
}
///////////////////////////////////////////////////////////////////////////////
unsigned int AdsbWrapper::GetUint32(unsigned char *dataBuf)
{
return((dataBuf[0] << 24) + (dataBuf[1] << 16) + (dataBuf[2] << 8) + dataBuf[3]);
}
///////////////////////////////////////////////////////////////////////////////
unsigned int AdsbWrapper::GetUint24(unsigned char *dataBuf)
{
return((dataBuf[0] << 16) + (dataBuf[1] << 8) + dataBuf[0]);
}
///////////////////////////////////////////////////////////////////////////////
unsigned short AdsbWrapper::GetUint16(unsigned char *dataBuf)
{
return((dataBuf[0] << 8) + dataBuf[1]);
}
///////////////////////////////////////////////////////////////////////////////
int AdsbWrapper::GetGeodeticLocation(unsigned char *dataBuf, double &location)
{
int status = -1;
unsigned int locFraction = dataBuf[0] << 16;
locFraction += dataBuf[1] << 8;
locFraction += dataBuf[2];
locFraction = locFraction & 0x00ffffff; // mask off the high byte
if (locFraction > 0x7fffffff)
{
locFraction -= 0x01000000;
}
location = locFraction * GDL90_LAT_LONG_RES;
return(status);
}
///////////////////////////////////////////////////////////////////////////////
// if filterData is set only save the latest data for a particular aircraft
///////////////////////////////////////////////////////////////////////////////
int AdsbWrapper::DecodeMessage(unsigned int msgSize, char *msgPtr, bool filterData)
{
int status = -1;
unsigned char msgId = 0;
unsigned char subMsgId = 0;
struct trafficReportNumRec *tempDataPtr = NULL;
int timeOfReception = 0;
int reportLen = 0;
bool setOwnshipCallsign = false;
unsigned char *msgBuf = (unsigned char *)msgPtr;
if (msgSize == 2)
{
status = status;
}
if (msgSize == 27)
{
status = status;
}
if ((msgSize > 0) && (msgBuf != 0))
{
if ((msgBuf[0] == GDL90_FLAGBYTE) && (msgBuf[msgSize - 1] == GDL90_FLAGBYTE))
{
// convert the flag bytes to zero so we can look for control escape
msgBuf[0] = 0;
msgBuf[msgSize - 1] = 0;
bool checkStuff = true;
QByteArray byteArray;
// byteArray.remove(dataIndex, 1);
int srcIndex = 0;
int shiftCnt = 0;
int dstIndex = 0;
bool shiftRemaining = false;
while (srcIndex < msgSize)
{
if (msgBuf[srcIndex] == 0x7D)
{
shiftCnt++;
msgBuf[dstIndex] = msgBuf[srcIndex] ^ 0x20;
srcIndex++;
shiftRemaining = true;
}
else
{
if (shiftRemaining == true)
{
msgBuf[dstIndex] = msgBuf[srcIndex];
}
}
srcIndex++;
dstIndex++;
}
msgId = msgBuf[1];
mLastMsgType = msgId;
// watch for control-escape fields used to allow 7d or 7f to be passed as data
switch (msgId)
{
case GDL90_ID_HEARTBEAT:
{
statusByteRec1 test;
test.statusByte = 1;
test.statusByte = 0x8;
mLatetestHeartbeat.msgId = msgBuf[1];
mLatetestHeartbeat.statusByte1.statusByte = msgBuf[2];
mLatetestHeartbeat.statusByte2.statusByte = msgBuf[3];
mLatetestHeartbeat.timestamp = (mLatetestHeartbeat.statusByte2.bits.timestamp << 16) + (msgBuf[5] << 8) + msgBuf[4];
mLatetestHeartbeat.msgCounts = (msgBuf[6] << 8) + msgBuf[7];
mLatetestHeartbeat.crc = (msgBuf[8] << 8) + msgBuf[9];
}
break;
case GDL90_ID_INIT:
status = status;
break;
case GDL90_ID_UPLINK_DATA:
{
// length expecected to be 436 bytes long
// possibly 24 bytes of uplink msgType, UAT Heder, then data
timeOfReception = (msgBuf[2] << 16) + (msgBuf[3] << 8) + msgBuf[4];
reportLen = msgSize - 5; // 5 becuase of the flag byte
double latitude;
double longitude;
int raw_lat = (msgBuf[5] << 15) | (msgBuf[6] << 7) | (msgBuf[7] >> 1);
latitude = raw_lat * GDL90_LAT_LONG_RES;
int raw_lon = ((msgBuf[7] & 0x01) << 23) | (msgBuf[8] << 15) | (msgBuf[9] << 7) | (msgBuf[10] >> 1);
longitude = raw_lon * GDL90_LAT_LONG_RES;
latitude = (msgBuf[5] << 15) + (msgBuf[6] << 7) + ((msgBuf[7] >> 1) & 0x7f);
latitude *= GDL90_LAT_LONG_RES;
longitude = ((msgBuf[7] & 1) << 23) + (msgBuf[8] << 15) + (msgBuf[9] & 0xFE);
longitude *= GDL90_LAT_LONG_RES;
if (longitude > 180.0)
{
longitude = 360.0 - longitude;
}
bool validPos = (msgBuf[10] & 0x80) == 0x80;
bool utcCoupled = (msgBuf[11] & 0x01) == 0x01;
bool appDataValid = (msgBuf[11] & 0x04) == 0x04;
bool position_valid = (msgBuf[10] & 0x01) ? 1 : 0;
bool app_data_valid = (msgBuf[11] & 0x20) ? 1 : 0;
int slot_id = (msgBuf[11] & 0x1f);
int tisb_site_id = (msgBuf[12] >> 4);
unsigned char slotId = msgBuf[11] & 0x1F;
unsigned char tisbSiteId = (msgBuf[12] >> 4) & 0x0F;
if (app_data_valid == true)
{
#ifdef LATER
status = ParseApplicationData(reportLen - 8, &msgBuf[13]);
#endif // LATER
}
status = status;
}
break;
case GDL90_ID_OWNSHIP:
setOwnshipCallsign = true;
// no break here fall through to GDL90_ID_TRAFFIC
case GDL90_ID_TRAFFIC:
{
struct trafficReportNumRec trafficData;
unsigned int dataIndex = 0;
status = DecodeTrafficMessage(msgSize, &msgBuf[1], trafficData);
if (status == 0)
{
if (filterData == true)
{
tempDataPtr = GetAircraftInfo(trafficData.callsign, dataIndex);
}
if (tempDataPtr == NULL)
{
tempDataPtr = new struct trafficReportNumRec;
mAircraftInfoList.push_back(tempDataPtr);
dataIndex = mAircraftInfoList.size() - 1;
if (setOwnshipCallsign == true)
{
setOwnshipCallsign = false;
mOwnshipCallsign = trafficData.callsign;
}
}
if (tempDataPtr != NULL)
{
CopyAircraftData(trafficData, *tempDataPtr);
mLastCallsign = trafficData.callsign;
mLastDataIndex = dataIndex;
}
}
}
break;
case GDL90_ID_STRATUX_HEARTBEAT0:
{
status = 0;
int gpsValid = (msgBuf[2] & 0x02) >> 1;
int ahrsValid = (msgBuf[2] & 0x01);
int protVerValid = (msgBuf[2] & 0x04) >> 2;
int protVer = msgBuf[3];
}
break;
case GDL90_ID_STRATUX_HEARTBEAT1:
status = 0;
break;
case GDL90_ID_STRATUX_AHRS:
{
subMsgId = msgBuf[2];
mStatuxAhrsData.roll = ((msgBuf[3] << 8) + msgBuf[4]) * 0.1f;
mStatuxAhrsData.pitch = ((msgBuf[5] << 8) + msgBuf[6]) * 0.1f;
mStatuxAhrsData.heading = ((msgBuf[7] << 8) + msgBuf[8]) * 0.1f;
// mStatuxAhrsData.trueAirspeed = (msgBuf[9] << 8) + msgBuf[10];
// mStatuxAhrsData.indicatedAirspeed = (msgBuf[11] << 8) + msgBuf[12];
float AHRSRoll = ((msgBuf[3] << 8) + msgBuf[4]) * 0.1f;
float AHRSPitch = ((msgBuf[5] << 8) + msgBuf[6]) * 0.1f;
float AHRSGyroHeading = ((msgBuf[7] << 8) + msgBuf[8]);
float AHRSMagHeading = ((msgBuf[9] << 8) + msgBuf[10]);
float AHRSSlipSkid = ((msgBuf[11] << 8) + msgBuf[12]);
float AHRSTurnRate = ((msgBuf[13] << 8) + msgBuf[14]);
float AHRSGLoad = ((msgBuf[5] << 8) + msgBuf[16]);
float AHRSGLoadMin = ((msgBuf[17] << 8) + msgBuf[18]);
float AHRSGLoadMax = ((msgBuf[19] << 8) + msgBuf[20]);
status = status;
}
break;
case 0x53: // GDL90_ID_STRATUX_HEARTBEAT1 aka status message
if (msgBuf[2] == 0x58)
{
mLastMsgType = 0x5358;
mStratuxStatusMessage.msgVersion = msgBuf[4];
memcpy(mStratuxStatusMessage.versionBuf, &msgBuf[5], 4);
mStratuxStatusMessage.hardwareRevCode = GetUint32(&msgBuf[9]);
mStratuxStatusMessage.validAndEnableFlags = GetUint16(&msgBuf[13]);
mStratuxStatusMessage.connectHardwareFlags = GetUint16(&msgBuf[15]);
mStratuxStatusMessage.numSatsLocked = msgBuf[17];
mStratuxStatusMessage.numSatsConnected = msgBuf[18];
mStratuxStatusMessage.num978Targets = GetUint16(&msgBuf[19]);
mStratuxStatusMessage.num1090Targets = GetUint16(&msgBuf[21]);
mStratuxStatusMessage.num978MsgRate = GetUint16(&msgBuf[23]);
mStratuxStatusMessage.num1090MsgRate = GetUint16(&msgBuf[25]);
mStratuxStatusMessage.cpuTemp = (float)GetUint16(&msgBuf[27]) * 0.1f;
mStratuxStatusMessage.numAdsbTowers = msgBuf[29];
double towerLat;
double towerLon;
int bufIndex = 30;
for (int index = 0; index < mStratuxStatusMessage.numAdsbTowers; index++)
{
GetGeodeticLocation(&msgBuf[bufIndex], towerLat);
bufIndex += 3;
GetGeodeticLocation(&msgBuf[bufIndex], towerLon);
bufIndex += 3;
}
// adsb tower locations would follow if we ever saw any
}
else
{
status = status;
}
break;
case 0x65: // ForeFront AHRS message -- or GPS time -f 12 bytes see _messages.py _parseGpsTime
{
unsigned short tempShrt;
if (msgBuf[2] == 0x1) // AHRS message
{
struct ahrsMsgRec ahrsMsgBuf;
// memcpy(&ahrsMsgBuf, &msgBuf[1], sizeof(struct ahrsMsgRec));
// bad values in pitch and roll needs more debugging
tempShrt = GetUint16(&msgBuf[3]);
mAhrsData.roll = (float)tempShrt * 0.1f;
tempShrt = GetUint16(&msgBuf[5]);
mAhrsData.pitch = (float)tempShrt * 0.1f;
tempShrt = GetUint16(&msgBuf[7]);
bool useTrueHeading = false;
if (tempShrt != 0xffff)
{
mAhrsData.heading = tempShrt & 0x7ffff;
if ((tempShrt & 0x8000) == 0x8000)
{
useTrueHeading = true;
}
}
else
{
mAhrsData.heading = -99999.0;
}
mAhrsData.indicatedAirspeed = GetUint16(&msgBuf[9]);
mAhrsData.trueAirspeed = GetUint16(&msgBuf[11]);
/*
_swab(&msgBuf[3], &msgBuf[3], 10);
ushortPtr = (unsigned short *)&msgBuf[3];
float tempRoll = (float)*ushortPtr * 0.1f;
// _swab(&msgBuf[1], &msgBuf[1], 2);
ushortPtr = (unsigned short *)&msgBuf[5];
mAhrsData.pitch = (float)*ushortPtr * 0.1f;
ushortPtr = (unsigned short *)&msgBuf[7];
if (*ushortPtr & 0x8000)
{
mAhrsData.headingIsTrue = false;
}
else
{
mAhrsData.headingIsTrue = true;
}
mAhrsData.heading = (float)(*ushortPtr & 0x7FFF) * 0.1f;
ushortPtr = (unsigned short *)&msgBuf[9];
mAhrsData.indicatedAirspeed = (float)*ushortPtr;
ushortPtr = (unsigned short *)&msgBuf[11];
mAhrsData.trueAirspeed = (float)*ushortPtr;
*/
}
else
{
if (msgBuf[2] == 0x0)
{
status = status;
}
}
}
break;
case GDL90_ID_OWNSHIP_ALTITUDE: // height above WGS-84 ellipsoid = MSL
{
// altitude is in increments of 5ft
short altitude = GetUint16(&msgBuf[2]) * 5;
short metrics = GetUint16(&msgBuf[4]);
status = status;
}
break;
case GDL90_ID_BASIC_REPORT:
{
// this should be 22 bytes
timeOfReception = (msgBuf[2] << 16) + (msgBuf[3] << 8) + msgBuf[4];
status = DecodePayloadHeader(&msgBuf[5]);
// format types 0 - 15
// 5 bits format type
// 27 bits surv & comm control
// 24 bits address
// format types 16 - 21
// 5 bits format type
// 27 bits surv & comm control
// 56 bits message field
// 24 bits address
// format type 22 - military use only
// format type 24
// 5 bits format type
// 6 bits surv & comm control
// 80 bits message field
// 24 bits address
break;
case GDL90_ID_LONG_REPORT:
{
// this should be 38 bytes
timeOfReception = (msgBuf[2] << 16) + (msgBuf[3] << 8) + msgBuf[4];
reportLen = msgSize - 5; // 5 because of the flag byte
status = DecodePayloadHeader(&msgBuf[5]);
unsigned char format = msgBuf[5] & 0x1F;
// DecodeAirPositionReport(&msgBuf[5]);
// format types 0 - 15
// 5 bits format type
// 27 bits surv & comm control
// 24 bits address
// format types 16 - 21
// 5 bits format type
// 27 bits surv & comm control
// 56 bits message field
// 24 bits address
// format type 22 - military use only
// format type 24
// 5 bits format type
// 6 bits surv & comm control
// 80 bits message field
// 24 bits address
}
break;
default:
status = status;
break;
}
}
}
}
return(status);
}
///////////////////////////////////////////////////////////////////////////////
int AdsbWrapper::DecodeTrafficMessage(unsigned int msgSize, unsigned char *msgBuf,
struct trafficReportNumRec &trafficData)
{
int status = -1;
ClearAircraftData(trafficData);
if ((msgBuf[0] == GDL90_ID_OWNSHIP) || (msgBuf[0] == GDL90_ID_TRAFFIC))
{
trafficData.lastUpdate = mLatetestHeartbeat.timestamp;
trafficData.addressType = (msgBuf[1] & 0xF);
trafficData.alertStatus = (msgBuf[1] >> 4) & 0xF;
trafficData.participantAddr = (msgBuf[2] << 16) + (msgBuf[3] << 8) + msgBuf[4];
if (trafficData.participantAddr < 0x100)
{
status = status;
}
double location;
GetGeodeticLocation(&msgBuf[5], trafficData.latitude);
if (trafficData.latitude > 90.0)
{
trafficData.latitude -= 90.0;
}
GetGeodeticLocation(&msgBuf[8], trafficData.longitude);
if (trafficData.longitude > 180.0)
{
trafficData.longitude -= 360.0;
}
int altitude = ((int32_t)(msgBuf[11])) << 4;
altitude += (msgBuf[12] & 0xF0) >> 4;
trafficData.altitude = (altitude * 25) - 1000;
trafficData.miscIndicators = msgBuf[12] & 0xF;
trafficData.integrityCode = (msgBuf[13] >> 4) & 0xF;
trafficData.accuracyCode = msgBuf[13] & 0xF;
int tempInt = 0;
if (msgBuf[14] > 0)
{
status = status;
}
// horiz velocity
tempInt = ((msgBuf[14] << 4) + ((msgBuf[15] & 0xf0) >> 4));
if (tempInt == 0xfff)
{
trafficData.horzVelocity = 4094;
}
else if (tempInt == 0xffe)
{
trafficData.horzVelocity = 4095; // max value
}
else
{
trafficData.horzVelocity = tempInt;
}
// vertical velocity
tempInt = ((msgBuf[15] & 0x0f) << 8) + msgBuf[16];
if (tempInt <= 0x1FD)
{
trafficData.vertVelocity = tempInt * 64;
}
else if ((tempInt | 0x800) == 0x800)
{
if (tempInt == 0x800)
{
trafficData.vertVelocity = 0;
}
else
{
int tempInt2 = tempInt & 0x7fff;
trafficData.vertVelocity = tempInt2 * -64;
}
}
trafficData.trackHeading = msgBuf[17] * 360.0f / 256.0f;
trafficData.emitterCategory = msgBuf[18];
char tempBuf[9];
memcpy(tempBuf, &msgBuf[19], 8);
tempBuf[8] = 0; // add EOS
int tempIndex = 7;
while ((tempIndex > 0) && (msgBuf[tempIndex] == ' '))
{
msgBuf[tempIndex] = 0;
tempIndex--;
}
trafficData.callsign = tempBuf;
trafficData.emergencyPriorityCode = (msgBuf[27] & 0xf0) >> 4;
// 2 bytes CRC at end of message followed by 7E flag byte
// need to add code to test crc and other data then set status;
unsigned int msgCrc = (msgBuf[28] << 8) + msgBuf[29];
unsigned int calcCrc = CrcCompute(&msgBuf[1], 28);
unsigned int calcCrc2 = gen_crc16(&msgBuf[1], 28);
status = 0;
}
return(status);
}
///////////////////////////////////////////////////////////////////////////////
void AdsbWrapper::CopyAircraftData(struct trafficReportNumRec &srcData,
struct trafficReportNumRec&tgtData)
{
tgtData.alertStatus = srcData.alertStatus;
tgtData.addressType = srcData.addressType;
tgtData.participantAddr = srcData.participantAddr;
tgtData.latitude = srcData.latitude;
tgtData.longitude = srcData.longitude;
tgtData.altitude = srcData.altitude;
tgtData.miscIndicators = srcData.miscIndicators;
tgtData.integrityCode = srcData.integrityCode;
tgtData.accuracyCode = srcData.accuracyCode;
tgtData.horzVelocity = srcData.horzVelocity;
tgtData.vertVelocity = srcData.vertVelocity;
tgtData.trackHeading = srcData.trackHeading;
tgtData.emitterCategory = srcData.emitterCategory;
tgtData.callsign = srcData.callsign;
tgtData.name = srcData.name;
tgtData.nNumber = srcData.nNumber;
tgtData.typeAircraft = srcData.typeAircraft;
tgtData.typeEngine = srcData.typeEngine;
tgtData.emergencyPriorityCode = srcData.emergencyPriorityCode;
tgtData.lastUpdate = time(NULL);
}
///////////////////////////////////////////////////////////////////////////////
void AdsbWrapper::ClearAircraftData(struct trafficReportNumRec &tgtData)
{
tgtData.alertStatus = 0;
tgtData.addressType = 0;
tgtData.participantAddr = 0;
tgtData.latitude = 0.0;
tgtData.longitude = 0.0;
tgtData.miscIndicators = 0;
tgtData.integrityCode = 0;
tgtData.accuracyCode = 0;
tgtData.horzVelocity = 0;
tgtData.vertVelocity = 0;
tgtData.trackHeading = 0;
tgtData.emitterCategory = 0;
tgtData.callsign.erase();
tgtData.emergencyPriorityCode = 0;
tgtData.lastUpdate = 0;
tgtData.name.clear();
tgtData.nNumber.clear();
tgtData.typeAircraft = 0;
tgtData.typeEngine = 0;
}
///////////////////////////////////////////////////////////////////////////////
struct AdsbWrapper::trafficReportNumRec *AdsbWrapper::GetAircraftInfo(
std::string callsign, unsigned int &dataIndex)
{
struct trafficReportNumRec *reportPtr = NULL;
QList<struct trafficReportNumRec *> ::iterator infoIter;
bool found = false;
int tempIndex = 0;
dataIndex = 0;
infoIter = mAircraftInfoList.begin();
while ((found != true) && (infoIter != mAircraftInfoList.end()))
{
if ((*infoIter)->callsign == callsign)
{
found = true;
reportPtr = *infoIter;
dataIndex = tempIndex;
}
else
{
infoIter++;
tempIndex++;
}
}
return(reportPtr);
}
///////////////////////////////////////////////////////////////////////////////
void AdsbWrapper::CrcInit(void)
{
unsigned short i, bitctr, crc;
for (i = 0; i < 256; i++)
{
crc = (i << 8);
for (bitctr = 0; bitctr < 8; bitctr++)
{
crc = (crc << 1) ^ ((crc & 0x8000) ? 0x1021 : 0);
}
mCrc16Table[i] = crc;
}
}
///////////////////////////////////////////////////////////////////////////////
unsigned int AdsbWrapper::CrcCompute( // Return – CRC of the block
unsigned char *block, // i – Starting address of message
unsigned int length // i – Length of message
)
{
unsigned int i;
unsigned short crc = 0;
for (i = 0; i < length; i++)
{
crc = mCrc16Table[crc >> 8] ^ (crc << 8) ^ block[i];
}
return crc;
}
///////////////////////////////////////////////////////////////////////////////
int AdsbWrapper::SerializeTrafficData(unsigned int dataIndex, char delimiter,
std::string &serializedData)
{
int status = -1;
if (dataIndex < mAircraftInfoList.size())
{
struct trafficReportNumRec *dataPtr = mAircraftInfoList.at(dataIndex);
if (dataPtr != NULL)
{
status = SerializeTrafficData(dataPtr, delimiter, serializedData);
}
}
return(status);
}
///////////////////////////////////////////////////////////////////////////////
int AdsbWrapper::SerializeTrafficData(struct AdsbWrapper::trafficReportNumRec *dataPtr,
char delimiter, std::string &serializedData)
{
int status = -1;
char dataBuf[512];
if (dataPtr != NULL)
{
sprintf(dataBuf,
"%d%c" // timestamp
"%s%c" // callsign
"%d%c" // address type
"%x%c" // participant address
"%s%c" // n number
"%3.12lf%c" // latitude
"%3.12lf%c" // longitude
"%d%c" // altitude
"%d%c" // alert status
"%d%c" // misc indicator
"%d%c" // integrity code
"%d%c" // accuracy
"%d%c" // horiz vel
"%d%c" // vert velocity
"%f%c" // track heading
"%d%c" // emitter category
"%d%c" // prioity code
"%f%c" // range
"%f\n", // bearing
mLatetestHeartbeat.timestamp, delimiter,
dataPtr->callsign.c_str(), delimiter,