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/*=====================================================================

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QGroundControl Open Source Ground Control Station
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(c) 2009 - 2011 QGROUNDCONTROL PROJECT <http://www.qgroundcontrol.org>
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This file is part of the QGROUNDCONTROL project
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    QGROUNDCONTROL is free software: you can redistribute it and/or modify
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    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

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    QGROUNDCONTROL is distributed in the hope that it will be useful,
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    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
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    along with QGROUNDCONTROL. If not, see <http://www.gnu.org/licenses/>.
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======================================================================*/

/**
 * @file
 *   @brief Main executable
 *   @author Lorenz Meier <mavteam@student.ethz.ch>
 *
 */

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#include <QtGlobal>
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#include <QApplication>
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#include <QSslSocket>
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#include <QProcessEnvironment>

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#include "QGCApplication.h"
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#define  SINGLE_INSTANCE_PORT   14499

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#ifndef __mobile__
    #include "QGCSerialPortInfo.h"
#endif

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#ifdef QT_DEBUG
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    #ifndef __mobile__
        #include "UnitTest.h"
    #endif
    #include "CmdLineOptParser.h"
    #ifdef Q_OS_WIN
        #include <crtdbg.h>
    #endif
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#endif
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#ifdef QGC_ENABLE_BLUETOOTH
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#include <QtBluetooth/QBluetoothSocket>
#endif

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#include <iostream>
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/* SDL does ugly things to main() */
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#ifdef main
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#undef main
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#endif
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#ifndef __mobile__
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    Q_DECLARE_METATYPE(QGCSerialPortInfo)
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#endif
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#ifdef Q_OS_WIN
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/// @brief Message handler which is installed using qInstallMsgHandler so you do not need
/// the MSFT debug tools installed to see qDebug(), qWarning(), qCritical and qAbort
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void msgHandler(QtMsgType type, const QMessageLogContext &context, const QString &msg)
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{
    const char symbols[] = { 'I', 'E', '!', 'X' };
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    QString output = QString("[%1] at %2:%3 - \"%4\"").arg(symbols[type]).arg(context.file).arg(context.line).arg(msg);
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    std::cerr << output.toStdString() << std::endl;
    if( type == QtFatalMsg ) abort();
}

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/// @brief CRT Report Hook installed using _CrtSetReportHook. We install this hook when
/// we don't want asserts to pop a dialog on windows.
int WindowsCrtReportHook(int reportType, char* message, int* returnValue)
{
    Q_UNUSED(reportType);
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    std::cerr << message << std::endl;  // Output message to stderr
    *returnValue = 0;                   // Don't break into debugger
    return true;                        // We handled this fully ourselves
}

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#endif

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#ifdef __android__
#include <jni.h>
#include "qserialport.h"

jint JNI_OnLoad(JavaVM* vm, void* reserved)
{
    Q_UNUSED(reserved);

    JNIEnv* env;
    if (vm->GetEnv(reinterpret_cast<void**>(&env), JNI_VERSION_1_6) != JNI_OK) {
        return -1;
    }

    QSerialPort::setNativeMethods();

    return JNI_VERSION_1_6;
}
#endif

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/**
 * @brief Starts the application
 *
 * @param argc Number of commandline arguments
 * @param argv Commandline arguments
 * @return exit code, 0 for normal exit and !=0 for error cases
 */
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int main(int argc, char *argv[])
{
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#ifndef __mobile__
    //-- Test for another instance already running. If that's the case, we simply exit.
    QHostAddress host("127.0.0.1");
    QUdpSocket socket;
    if(!socket.bind(host, SINGLE_INSTANCE_PORT, QAbstractSocket::DontShareAddress)) {
        qWarning() << "Another instance already running. Exiting.";
        exit(-1);
    }
#endif

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#ifdef Q_OS_MAC
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#ifndef __ios__
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    // Prevent Apple's app nap from screwing us over
    // tip: the domain can be cross-checked on the command line with <defaults domains>
    QProcess::execute("defaults write org.qgroundcontrol.qgroundcontrol NSAppSleepDisabled -bool YES");
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#endif
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#endif
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    // install the message handler
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#ifdef Q_OS_WIN
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    qInstallMessageHandler(msgHandler);
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#endif
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    // The following calls to qRegisterMetaType are done to silence debug output which warns
    // that we use these types in signals, and without calling qRegisterMetaType we can't queue
    // these signals. In general we don't queue these signals, but we do what the warning says
    // anyway to silence the debug output.
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#ifndef __ios__
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    qRegisterMetaType<QSerialPort::SerialPortError>();
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#endif
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#ifdef QGC_ENABLE_BLUETOOTH
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    qRegisterMetaType<QBluetoothSocket::SocketError>();
    qRegisterMetaType<QBluetoothServiceInfo>();
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#endif
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    qRegisterMetaType<QAbstractSocket::SocketError>();
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#ifndef __mobile__
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    qRegisterMetaType<QGCSerialPortInfo>();
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#endif
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    // We statically link our own QtLocation plugin
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#ifdef Q_OS_WIN
    // In Windows, the compiler doesn't see the use of the class created by Q_IMPORT_PLUGIN
#pragma warning( disable : 4930 4101 )
#endif

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    Q_IMPORT_PLUGIN(QGeoServiceProviderFactoryQGC)
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    bool runUnitTests = false;          // Run unit tests
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#ifdef QT_DEBUG
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    // We parse a small set of command line options here prior to QGCApplication in order to handle the ones
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    // which need to be handled before a QApplication object is started.
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    bool stressUnitTests = false;       // Stress test unit tests
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    bool quietWindowsAsserts = false;   // Don't let asserts pop dialog boxes
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    QString unitTestOptions;
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    CmdLineOpt_t rgCmdLineOptions[] = {
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        { "--unittest",             &runUnitTests,          &unitTestOptions },
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        { "--unittest-stress",      &stressUnitTests,       &unitTestOptions },
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        { "--no-windows-assert-ui", &quietWindowsAsserts,   NULL },
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        // Add additional command line option flags here
    };
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    ParseCmdLineOptions(argc, argv, rgCmdLineOptions, sizeof(rgCmdLineOptions)/sizeof(rgCmdLineOptions[0]), false);
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    if (stressUnitTests) {
        runUnitTests = true;
    }
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    if (quietWindowsAsserts) {
#ifdef Q_OS_WIN
        _CrtSetReportHook(WindowsCrtReportHook);
#endif
    }
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#ifdef Q_OS_WIN
    if (runUnitTests) {
        // Don't pop up Windows Error Reporting dialog when app crashes. This prevents TeamCity from
        // hanging.
        DWORD dwMode = SetErrorMode(SEM_NOGPFAULTERRORBOX);
        SetErrorMode(dwMode | SEM_NOGPFAULTERRORBOX);
    }
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#endif
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#endif // QT_DEBUG
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    QGCApplication* app = new QGCApplication(argc, argv, runUnitTests);
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    Q_CHECK_PTR(app);
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    // There appears to be a threading issue in qRegisterMetaType which can cause it to throw a qWarning
    // about duplicate type converters. This is caused by a race condition in the Qt code. Still working
    // with them on tracking down the bug. For now we register the type which is giving us problems here
    // while we only have the main thread. That should prevent it from hitting the race condition later
    // on in the code.
    qRegisterMetaType<QList<QPair<QByteArray,QByteArray> > >();
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    app->_initCommon();
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    int exitCode = 0;
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#ifndef __mobile__
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#ifdef QT_DEBUG
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    if (runUnitTests) {
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        for (int i=0; i < (stressUnitTests ? 20 : 1); i++) {
            if (!app->_initForUnitTests()) {
                return -1;
            }

            // Run the test
            int failures = UnitTest::run(unitTestOptions);
            if (failures == 0) {
                qDebug() << "ALL TESTS PASSED";
                exitCode = 0;
            } else {
                qDebug() << failures << " TESTS FAILED!";
                exitCode = -failures;
                break;
            }
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        }
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    } else
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#endif
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#endif
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    {
        if (!app->_initForNormalAppBoot()) {
            return -1;
        }
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        exitCode = app->exec();
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    }
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    delete app;
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    qDebug() << "After app delete";
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    return exitCode;
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}