interactive.c

// Part of readsb, a Mode-S/ADSB/TIS message decoder.
//
// interactive.c: aircraft tracking and interactive display
//
// Copyright (c) 2019 Michael Wolf <michael@mictronics.de>
//
// This code is based on a detached fork of dump1090-fa.
//
// Copyright (c) 2014,2015 Oliver Jowett <oliver@mutability.co.uk>
//
// This file 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 3 of the License, or
// 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.
//
// You should have received a copy of the GNU General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.
//
// This file incorporates work covered by the following copyright and
// license:
//
// Copyright (C) 2012 by Salvatore Sanfilippo <antirez@gmail.com>
//
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
//  *  Redistributions of source code must retain the above copyright
//     notice, this list of conditions and the following disclaimer.
//
//  *  Redistributions in binary form must reproduce the above copyright
//     notice, this list of conditions and the following disclaimer in the
//     documentation and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

#include "readsb.h"

#ifndef DISABLE_INTERACTIVE
#include <curses.h>
#endif

#ifdef DISABLE_INTERACTIVE
void interactiveInit() {}
void interactiveCleanup(void) {}
void interactiveShowData(void) {}
#else

//
//========================= Interactive mode ===============================

static int convert_altitude(int ft) {
    if (Modes.metric)
        return (ft / 3.2828);
    else
        return ft;
}

static int convert_speed(int kts) {
    if (Modes.metric)
        return (kts * 1.852);
    else
        return kts;
}

//
//=========================================================================
//
// Show the currently captured interactive data on screen.
//

void interactiveInit() {
    if (!Modes.interactive)
        return;

    initscr();
    clear();
    refresh();

}

void interactiveCleanup(void) {
    if (Modes.interactive) {
        endwin();
    }
}

static int compareAlt(const void *p1, const void *p2) {
    struct aircraft *a1 = *(struct aircraft**) p1;
    struct aircraft *a2 = *(struct aircraft**) p2;
    if (a1 == NULL)
        return 1;
    if (a2 == NULL)
        return -1;
    int valid1 = trackDataValid(&a1->baro_alt_valid);
    int valid2 = trackDataValid(&a2->baro_alt_valid);
    if (valid1 && valid2) {
        return (a1->baro_alt > a2->baro_alt) - (a1->baro_alt < a2->baro_alt);
    } else {
        return -1 * ((valid1 > valid2) - (valid1 < valid2));
    }
}

void interactiveShowData(void) {
    static int64_t next_update;
    static int64_t next_clear;
    int64_t now = mstime();
    char progress;
    char spinner[4] = "|/-\\";

    // Refresh screen every (MODES_INTERACTIVE_REFRESH_TIME) miliseconde
    if (now < next_update)
        return;

    next_update = now + MODES_INTERACTIVE_REFRESH_TIME;

    // clear potential errors every 2 seconds
    if (now > next_clear) {
        next_clear = now + 2 * SECONDS;
        clear();
        // print header
        mvprintw(0, 0, " Hex    Mode  Sqwk  Flight   Alt    Spd  Hdg    Lat      Long   RSSI  Msgs  Ti");
        mvhline(1, 0, ACS_HLINE, 80);
    }


    progress = spinner[(now / 1000) % 4];
    mvaddch(0, 79, progress);

    int rows = getmaxy(stdscr);
    int row = 2;

    struct craftArray *ca = &Modes.aircraftActive;

    // sort active list by altitude
    pthread_mutex_lock(&ca->change_mutex);
    pthread_mutex_lock(&ca->write_mutex);
    qsort(ca->list, ca->len, sizeof(struct aircraft *), compareAlt);
    pthread_mutex_unlock(&ca->write_mutex);
    pthread_mutex_unlock(&ca->change_mutex);

    ca_lock_read(ca);
    for (int i = 0; i < ca->len; i++) {
        struct aircraft *a = ca->list[i];

        if (a && row < rows) {

            if ((now - a->seen) < Modes.interactive_display_ttl) {
                int msgs = a->messages;

                if (msgs > 1) {
                    char strSquawk[5] = " ";
                    char strFl[7] = " ";
                    char strTt[5] = " ";
                    char strGs[5] = " ";

                    if (trackDataValid(&a->squawk_valid)) {
                        snprintf(strSquawk, 5, "%04x", a->squawk);
                    }

                    if (trackDataValid(&a->gs_valid)) {
                        snprintf(strGs, 5, "%3d", convert_speed(a->gs));
                    }

                    if (trackDataValid(&a->track_valid)) {
                        snprintf(strTt, 5, "%03.0f", a->track);
                    }

                    if (msgs > 99999) {
                        msgs = 99999;
                    }

                    char strMode[5] = "    ";
                    char strLat[8] = " ";
                    char strLon[9] = " ";
                    double * pSig = a->signalLevel;
                    double signalAverage = (pSig[0] + pSig[1] + pSig[2] + pSig[3] +
                            pSig[4] + pSig[5] + pSig[6] + pSig[7]) / 8.0;

                    strMode[0] = 'S';
                    if (a->modeA_hit) {
                        strMode[2] = 'a';
                    }
                    if (a->modeC_hit) {
                        strMode[3] = 'c';
                    }

                    if (trackDataValid(&a->position_valid)) {
                        snprintf(strLat, 8, "%7.03f", a->lat);
                        snprintf(strLon, 9, "%8.03f", a->lon);
                    }

                    if (trackDataValid(&a->airground_valid) && a->airground == AG_GROUND) {
                        snprintf(strFl, 7, " grnd");
                    } else if (Modes.use_gnss && trackDataValid(&a->geom_alt_valid)) {
                        snprintf(strFl, 7, "%5dH", convert_altitude(a->geom_alt));
                    } else if (trackDataValid(&a->baro_alt_valid)) {
                        snprintf(strFl, 7, "%5d ", convert_altitude(a->baro_alt));
                    }

                    mvprintw(row, 0, "%s%06X %-4s  %-4s  %-8s %6s %3s  %3s  %7s %8s %5.1f %5d %2.0f",
                            (a->addr & MODES_NON_ICAO_ADDRESS) ? "~" : " ", (a->addr & 0xffffff),
                            strMode, strSquawk, a->callsign, strFl, strGs, strTt,
                            strLat, strLon, 10 * log10(signalAverage), msgs, (now - a->seen) / 1000.0);
                    ++row;
                }
            }
            a = a->next;
        }
    }
    ca_unlock_read(ca);

    if (Modes.mode_ac) {
        for (unsigned i = 1; i < 4096 && row < rows; ++i) {
            if (modeAC_match[i] || modeAC_count[i] < 50 || modeAC_age[i] > 5)
                continue;

            char strMode[5] = "  A ";
            char strFl[7] = " ";
            unsigned modeA = indexToModeA(i);
            int modeC = modeAToModeC(modeA);
            if (modeC != INVALID_ALTITUDE) {
                strMode[3] = 'C';
                snprintf(strFl, 7, "%5d ", convert_altitude(modeC * 100));
            }

            mvprintw(row, 0,
                    "%7s %-4s  %04x  %-8s %6s %3s  %3s  %7s %8s %5s %5d %2d\n",
                    "", /* address */
                    strMode, /* mode */
                    modeA, /* squawk */
                    "", /* callsign */
                    strFl, /* altitude */
                    "", /* gs */
                    "", /* heading */
                    "", /* lat */
                    "", /* lon */
                    "", /* signal */
                    modeAC_count[i], /* messages */
                    modeAC_age[i]); /* age */
            ++row;
        }
    }

    move(row, 0);
    clrtobot();
    refresh();
}

#endif

//
//=========================================================================
//