C++ MythMainWindow类代码示例

void MythScreenStack::PopScreen(MythScreenType *screen, bool allowFade,
                                bool deleteScreen)
{
    if (!screen || screen->IsDeleting())
        return;

    screen->aboutToHide();

    if (m_Children.isEmpty())
        return;

    MythMainWindow *mainwindow = GetMythMainWindow();

    screen->setParent(0);
    if ((screen == m_topScreen) && allowFade && m_DoTransitions
        && !mainwindow->IsExitingToMain())
    {
        screen->SetFullscreen(false);
        if (deleteScreen)
        {
            screen->SetDeleting(true);
            m_ToDelete.push_back(screen);
        }
        screen->AdjustAlpha(1, -kFadeVal);
    }
    else
    {
        for (int i = 0; i < m_Children.size(); ++i)
        {
            if (m_Children.at(i) == screen)
                m_Children.remove(i);
        }
        if (deleteScreen)
            delete screen;

        screen = NULL;

        mainwindow->update();
        if (mainwindow->IsExitingToMain())
        {
            QCoreApplication::postEvent(
                mainwindow, new QEvent(MythEvent::kExitToMainMenuEventType));
        }
    }

    m_topScreen = NULL;

    RecalculateDrawOrder();

    // If we're fading it, we still want to draw it.
    if (screen)
        m_DrawOrder.push_back(screen);

    if (!m_Children.isEmpty())
    {
        QVector<MythScreenType *>::Iterator it;
        for (it = m_DrawOrder.begin(); it != m_DrawOrder.end(); ++it)
        {
            if (*it != screen && !(*it)->IsDeleting())
            {
                m_topScreen = (*it);
                (*it)->SetAlpha(255);
                (*it)->aboutToShow();
            }
        }
    }

    if (m_topScreen)
    {
        m_topScreen->SetRedraw();

        if (!allowFade || !m_DoTransitions)
            emit topScreenChanged(m_topScreen);
    }
    else
    {
        // Screen still needs to be redrawn if we have popped the last screen
        // off the popup stack, or similar
        MythScreenType *mainscreen = mainwindow->GetMainStack()->GetTopScreen();
        if (mainscreen)
            mainscreen->SetRedraw();

        if (!allowFade || !m_DoTransitions)
            emit topScreenChanged(NULL);
    }
}

int main(int argc, char **argv)
{
    MythScreenWizardCommandLineParser cmdline;
    if (!cmdline.Parse(argc, argv))
    {
        cmdline.PrintHelp();
        return GENERIC_EXIT_INVALID_CMDLINE;
    }

    if (cmdline.toBool("showhelp"))
    {
        cmdline.PrintHelp();
        return GENERIC_EXIT_OK;
    }

    if (cmdline.toBool("showversion"))
    {
        cmdline.PrintVersion();
        return GENERIC_EXIT_OK;
    }


#ifdef Q_OS_MAC
    // Without this, we can't set focus to any of the CheckBoxSetting, and most
    // of the MythPushButton widgets, and they don't use the themed background.
    QApplication::setDesktopSettingsAware(false);
#endif
    new QApplication(argc, argv);
    QCoreApplication::setApplicationName(MYTH_APPNAME_MYTHSCREENWIZARD);

    int retval;
    QString mask("general");
    if ((retval = cmdline.ConfigureLogging(mask, false)) != GENERIC_EXIT_OK)
        return retval;

    CleanupGuard callCleanup(cleanup);

#ifndef _WIN32
    QList<int> signallist;
    signallist << SIGINT << SIGTERM << SIGSEGV << SIGABRT << SIGBUS << SIGFPE
               << SIGILL;
#if ! CONFIG_DARWIN
    signallist << SIGRTMIN;
#endif
    SignalHandler::Init(signallist);
    signal(SIGHUP, SIG_IGN);
#endif


    if ((retval = cmdline.ConfigureLogging()) != GENERIC_EXIT_OK)
        return retval;

    if (!cmdline.toString("display").isEmpty())
    {
        MythUIHelper::SetX11Display(cmdline.toString("display"));
    }

    gContext = new MythContext(MYTH_BINARY_VERSION);
    if (!gContext->Init(true, false, true))
    {
        LOG(VB_GENERAL, LOG_ERR, LOC + "Failed to init MythContext, exiting.");
        return GENERIC_EXIT_NO_MYTHCONTEXT;
    }

    if (gCoreContext->GetNumSetting("RunFrontendInWindow"))
    {
        LOG(VB_GENERAL, LOG_WARNING, LOC +
                    "Refusing to run screen setup wizard in windowed mode.");
        return GENERIC_EXIT_NOT_OK;
    }

    int GuiOffsetX = gCoreContext->GetNumSetting("GuiOffsetX", 0);
    int GuiOffsetY = gCoreContext->GetNumSetting("GuiOffsetY", 0);
    int GuiWidth   = gCoreContext->GetNumSetting("GuiWidth", 0);
    int GuiHeight  = gCoreContext->GetNumSetting("GuiHeight", 0);

    gCoreContext->OverrideSettingForSession("GuiOffsetX", "0");
    gCoreContext->OverrideSettingForSession("GuiOffsetY", "0");
    gCoreContext->OverrideSettingForSession("GuiWidth",   "0");
    gCoreContext->OverrideSettingForSession("GuiHeight",  "0");

    cmdline.ApplySettingsOverride();

    GetMythUI()->LoadQtConfig();

    QString themename = gCoreContext->GetSetting("Theme", DEFAULT_UI_THEME);
    QString themedir = GetMythUI()->FindThemeDir(themename);
    if (themedir.isEmpty())
    {
        LOG(VB_GENERAL, LOG_ERR, QString("Couldn't find theme '%1'")
                .arg(themename));
        return GENERIC_EXIT_NO_THEME;
    }

    MythMainWindow *mainWindow = GetMythMainWindow();
#if CONFIG_DARWIN
    mainWindow->Init(OPENGL2_PAINTER);
#else
    mainWindow->Init();
#endif
//.........这里部分代码省略.........

int main(int argc, char *argv[])
{
    MythAVTestCommandLineParser cmdline;
    if (!cmdline.Parse(argc, argv))
    {
        cmdline.PrintHelp();
        return GENERIC_EXIT_INVALID_CMDLINE;
    }

    if (cmdline.toBool("showhelp"))
    {
        cmdline.PrintHelp();
        return GENERIC_EXIT_OK;
    }

    if (cmdline.toBool("showversion"))
    {
        cmdline.PrintVersion();
        return GENERIC_EXIT_OK;
    }

    QApplication a(argc, argv);
    QCoreApplication::setApplicationName(MYTH_APPNAME_MYTHAVTEST);

    int retval;
    if ((retval = cmdline.ConfigureLogging()) != GENERIC_EXIT_OK)
        return retval;

    if (!cmdline.toString("display").isEmpty())
    {
        MythUIHelper::SetX11Display(cmdline.toString("display"));
    }

    if (!cmdline.toString("geometry").isEmpty())
    {
        MythUIHelper::ParseGeometryOverride(cmdline.toString("geometry"));
    }

    QString filename = "";
    if (!cmdline.toString("infile").isEmpty())
        filename = cmdline.toString("infile");
    else if (cmdline.GetArgs().size() >= 1)
        filename = cmdline.GetArgs()[0];

    gContext = new MythContext(MYTH_BINARY_VERSION);
    if (!gContext->Init())
    {
        LOG(VB_GENERAL, LOG_ERR, "Failed to init MythContext, exiting.");
        return GENERIC_EXIT_NO_MYTHCONTEXT;
    }

    cmdline.ApplySettingsOverride();

    setuid(getuid());

    QString themename = gCoreContext->GetSetting("Theme");
    QString themedir = GetMythUI()->FindThemeDir(themename);
    if (themedir.isEmpty())
    {
        QString msg = QString("Fatal Error: Couldn't find theme '%1'.")
            .arg(themename);
        LOG(VB_GENERAL, LOG_ERR, msg);
        return GENERIC_EXIT_NO_THEME;
    }

    GetMythUI()->LoadQtConfig();

#if defined(Q_OS_MACX)
    // Mac OS X doesn't define the AudioOutputDevice setting
#else
    QString auddevice = gCoreContext->GetSetting("AudioOutputDevice");
    if (auddevice.isEmpty())
    {
        LOG(VB_GENERAL, LOG_ERR, "Fatal Error: Audio not configured, you need "
                                 "to run 'mythfrontend', not 'mythtv'.");
        return GENERIC_EXIT_SETUP_ERROR;
    }
#endif

    MythMainWindow *mainWindow = GetMythMainWindow();
    mainWindow->Init();

    if (cmdline.toBool("test"))
    {
        int seconds = 5;
        if (!cmdline.toString("seconds").isEmpty())
            seconds = cmdline.toInt("seconds");
        VideoPerformanceTest *test = new VideoPerformanceTest(filename, false,
                    cmdline.toBool("decodeonly"), seconds,
                    cmdline.toBool("deinterlace"));
        test->Test();
        delete test;
    }
    else
    {
        TV::InitKeys();

        if (!UpgradeTVDatabaseSchema(false))
        {
            LOG(VB_GENERAL, LOG_ERR, "Fatal Error: Incorrect database schema.");
//.........这里部分代码省略.........

int main(int argc, char **argv)
{
    bool bShowSettings = false;

    MythWelcomeCommandLineParser cmdline;
    if (!cmdline.Parse(argc, argv))
    {
        cmdline.PrintHelp();
        return GENERIC_EXIT_INVALID_CMDLINE;
    }

    if (cmdline.toBool("showhelp"))
    {
        cmdline.PrintHelp();
        return GENERIC_EXIT_OK;
    }

    if (cmdline.toBool("showversion"))
    {
        cmdline.PrintVersion();
        return GENERIC_EXIT_OK;
    }
    
    QApplication a(argc, argv);
    QCoreApplication::setApplicationName(MYTH_APPNAME_MYTHWELCOME);

    int retval;
    if ((retval = cmdline.ConfigureLogging()) != GENERIC_EXIT_OK)
        return retval;

    if (cmdline.toBool("setup"))
        bShowSettings = true;

#ifndef _WIN32
    QList<int> signallist;
    signallist << SIGINT << SIGTERM << SIGSEGV << SIGABRT << SIGBUS << SIGFPE
               << SIGILL;
    SignalHandler handler(signallist);
    signal(SIGHUP, SIG_IGN);
#endif

    gContext = new MythContext(MYTH_BINARY_VERSION);
    if (!gContext->Init())
    {
        LOG(VB_GENERAL, LOG_ERR,
            "mythwelcome: Could not initialize MythContext. Exiting.");
        return GENERIC_EXIT_NO_MYTHCONTEXT;
    }

    if (!MSqlQuery::testDBConnection())
    {
        LOG(VB_GENERAL, LOG_ERR,
            "mythwelcome: Could not open the database. Exiting.");
        return -1;
    }

    LCD::SetupLCD();

    if (LCD *lcd = LCD::Get())
        lcd->switchToTime();

    MythTranslation::load("mythfrontend");

    GetMythUI()->LoadQtConfig();

    MythMainWindow *mainWindow = GetMythMainWindow();
    mainWindow->Init();

    initKeys();

    if (bShowSettings)
    {
        MythShutdownSettings settings;
        settings.exec();
    }
    else
    {
        MythScreenStack *mainStack = GetMythMainWindow()->GetMainStack();

        WelcomeDialog *welcome = new WelcomeDialog(mainStack, "mythwelcome");

        if (welcome->Create())
            mainStack->AddScreen(welcome, false);
        else
            return -1;

        do
        {
            qApp->processEvents();
            usleep(5000);
        } while (mainStack->TotalScreens() > 0);
    }

    DestroyMythMainWindow();

    delete gContext;

    return 0;
}

void MythNotificationScreenStack::PopScreen(MythScreenType *screen, bool allowFade,
                                            bool deleteScreen)
{
    if (!screen || screen->IsDeleting())
        return;

    bool poppedFullscreen = screen->IsFullscreen();

    screen->aboutToHide();

    if (m_Children.isEmpty())
        return;

    MythMainWindow *mainwindow = GetMythMainWindow();

    screen->setParent(0);
    if (allowFade && m_DoTransitions && !mainwindow->IsExitingToMain())
    {
        screen->SetFullscreen(false);
        if (deleteScreen)
        {
            screen->SetDeleting(true);
            m_ToDelete.push_back(screen);
        }
        screen->AdjustAlpha(1, -kFadeVal);
    }
    else
    {
        for (int i = 0; i < m_Children.size(); ++i)
        {
            if (m_Children.at(i) == screen)
            {
                m_Children.remove(i);
                break;
            }
        }
        if (deleteScreen)
            screen->deleteLater();

        screen = NULL;
    }

    m_topScreen = NULL;

    RecalculateDrawOrder();

    // If we're fading it, we still want to draw it.
    if (screen && !m_DrawOrder.contains(screen))
        m_DrawOrder.push_back(screen);

    if (!m_Children.isEmpty())
    {
        QVector<MythScreenType *>::Iterator it;
        for (it = m_DrawOrder.begin(); it != m_DrawOrder.end(); ++it)
        {
            if (*it != screen && !(*it)->IsDeleting())
            {
                m_topScreen = (*it);
                (*it)->SetAlpha(255);
                if (poppedFullscreen)
                    (*it)->aboutToShow();
            }
        }
    }

    if (m_topScreen)
    {
        m_topScreen->SetRedraw();
    }
    else
    {
        // Screen still needs to be redrawn if we have popped the last screen
        // off the popup stack, or similar
        if (mainwindow->GetMainStack())
        {
            MythScreenType *mainscreen = mainwindow->GetMainStack()->GetTopScreen();
            if (mainscreen)
                mainscreen->SetRedraw();
        }
    }
}

void VideoOutputOpenGL::PrepareFrame(VideoFrame *buffer, FrameScanType t,
                                     OSD *osd)
{
    if (!gl_context)
        return;

    OpenGLLocker ctx_lock(gl_context);

    if (!buffer)
    {
        buffer = vbuffers.GetScratchFrame();
        if (m_deinterlacing && !IsBobDeint())
            t = kScan_Interlaced;
    }

    gl_context_lock.lock();
    framesPlayed = buffer->frameNumber + 1;
    gl_context_lock.unlock();

    gl_context->BindFramebuffer(0);
    if (db_letterbox_colour == kLetterBoxColour_Gray25)
        gl_context->SetBackground(127, 127, 127, 255);
    else
        gl_context->SetBackground(0, 0, 0, 255);
    gl_context->ClearFramebuffer();

    // stereoscopic views
    QRect main   = gl_context->GetViewPort();
    QRect first  = main;
    QRect second = main;
    bool twopass = (m_stereo == kStereoscopicModeSideBySide) ||
                   (m_stereo == kStereoscopicModeTopAndBottom);

    if (kStereoscopicModeSideBySide == m_stereo)
    {
        first  = QRect(main.left() / 2,  main.top(),
                       main.width() / 2, main.height());
        second = first.translated(main.width() / 2, 0);
    }
    else if (kStereoscopicModeTopAndBottom == m_stereo)
    {
        first  = QRect(main.left(),  main.top() / 2,
                       main.width(), main.height() / 2);
        second = first.translated(0, main.height() / 2);
    }

    // main UI when embedded
    MythMainWindow *mwnd = GetMythMainWindow();
    if (mwnd && mwnd->GetPaintWindow() && window.IsEmbedding())
    {
        if (twopass)
            gl_context->SetViewPort(first, true);
        mwnd->GetPaintWindow()->clearMask();
        // Must force a UI redraw when embedded.  If not, when the EPG or
        // finder screen is popped up over the video and the user then clicks
        // away from Myth, the UI is left blank.
        mwnd->GetMainStack()->GetTopScreen()->SetRedraw();
        mwnd->draw(gl_painter);
        if (twopass)
        {
            gl_context->SetViewPort(second, true);
            mwnd->GetPaintWindow()->clearMask();
            mwnd->GetMainStack()->GetTopScreen()->SetRedraw();
            mwnd->draw(gl_painter);
            gl_context->SetViewPort(main, true);
        }
    }

    // video
    if (gl_videochain && !buffer->dummy)
    {
        gl_videochain->SetVideoRect(vsz_enabled ? vsz_desired_display_rect :
                                                  window.GetDisplayVideoRect(),
                                    window.GetVideoRect());
        gl_videochain->PrepareFrame(buffer->top_field_first, t,
                                    m_deinterlacing, framesPlayed, m_stereo);
    }

    // PiPs/PBPs
    if (gl_pipchains.size())
    {
        QMap<MythPlayer*,OpenGLVideo*>::iterator it = gl_pipchains.begin();
        for (; it != gl_pipchains.end(); ++it)
        {
            if (gl_pip_ready[it.key()])
            {
                bool active = gl_pipchain_active == *it;
                if (twopass)
                    gl_context->SetViewPort(first, true);
                (*it)->PrepareFrame(buffer->top_field_first, t,
                                    m_deinterlacing, framesPlayed,
                                    kStereoscopicModeNone, active);
                if (twopass)
                {
                    gl_context->SetViewPort(second, true);
                    (*it)->PrepareFrame(buffer->top_field_first, t,
                                    m_deinterlacing, framesPlayed,
                                    kStereoscopicModeNone, active);
                    gl_context->SetViewPort(main);
                }
//.........这里部分代码省略.........

    bool Create(void)
    {
        m_x_disp = OpenMythXDisplay();
        if (!m_x_disp)
            return false;

        MythXLocker locker(m_x_disp);

        if (m_va_disp_type == kVADisplayGLX)
        {
            MythMainWindow *mw = GetMythMainWindow();
            if (!mw)
                return false;
            MythRenderOpenGL *gl =
                static_cast<MythRenderOpenGL*>(mw->GetRenderDevice());
            if (!gl)
            {
                LOG(VB_PLAYBACK, LOG_ERR, LOC +
                    QString("Failed to get OpenGL context - you must use the "
                            "OpenGL UI painter for VAAPI GLX support."));
                return false;
            }

            gl->makeCurrent();
            Display *display = glXGetCurrentDisplay();
            gl->doneCurrent();

            m_va_disp = vaGetDisplayGLX(display);
        }
        else
        {
            m_va_disp = vaGetDisplay(m_x_disp->GetDisplay());
        }

        if (!m_va_disp)
        {
            LOG(VB_GENERAL, LOG_ERR, LOC + "Failed to create VADisplay");
            return false;
        }

        int major_ver, minor_ver;
        INIT_ST;
        va_status = vaInitialize(m_va_disp, &major_ver, &minor_ver);
        CHECK_ST;

        if (ok)
            m_driver = vaQueryVendorString(m_va_disp);

        static bool debugged = false;
        if (ok && !debugged)
        {
            debugged = true;
            LOG(VB_GENERAL, LOG_INFO, LOC + QString("Version: %1.%2")
                                        .arg(major_ver).arg(minor_ver));
            LOG(VB_GENERAL, LOG_INFO, LOC + QString("Driver : %1").arg(m_driver));
        }
        if (ok)
        {
            LOG(VB_PLAYBACK, LOG_INFO, LOC +
                QString("Created VAAPI %1 display")
                .arg(m_va_disp_type == kVADisplayGLX ? "GLX" : "X11"));
        }
        return ok;
    }

//.........这里部分代码省略.........
    {
        MythUIHelper::ParseGeometryOverride(cmdline.GetGeometry());
    }

    gContext = new MythContext(MYTH_BINARY_VERSION);
    if (!gContext->Init())
    {
        VERBOSE(VB_IMPORTANT, "Failed to init MythContext, exiting.");
        return GENERIC_EXIT_NO_MYTHCONTEXT;
    }

    gCoreContext->SetAppName(binname);

    QMap<QString, QString> settingsOverride = cmdline.GetSettingsOverride();
    if (settingsOverride.size())
    {
        QMap<QString, QString>::iterator it;
        for (it = settingsOverride.begin(); it != settingsOverride.end(); ++it)
        {
            VERBOSE(VB_IMPORTANT, QString("Setting '%1' being forced to '%2'")
                                          .arg(it.key()).arg(*it));
            gCoreContext->OverrideSettingForSession(it.key(), *it);
        }
    }

    // Create priveledged thread, then drop privs
    pthread_t priv_thread;
    bool priv_thread_created = true;

    int status = pthread_create(&priv_thread, NULL, run_priv_thread, NULL);
    if (status)
    {
        VERBOSE(VB_IMPORTANT, QString("Warning: ") +
                "Failed to create priveledged thread." + ENO);
        priv_thread_created = false;
    }
    setuid(getuid());

    QString themename = gCoreContext->GetSetting("Theme");
    QString themedir = GetMythUI()->FindThemeDir(themename);
    if (themedir.isEmpty())
    {
        QString msg = QString("Fatal Error: Couldn't find theme '%1'.")
            .arg(themename);
        VERBOSE(VB_IMPORTANT, msg);
        return GENERIC_EXIT_NO_THEME;
    }

    GetMythUI()->LoadQtConfig();

#if defined(Q_OS_MACX)
    // Mac OS X doesn't define the AudioOutputDevice setting
#else
    QString auddevice = gCoreContext->GetSetting("AudioOutputDevice");
    if (auddevice.isEmpty())
    {
        VERBOSE(VB_IMPORTANT, "Fatal Error: Audio not configured, you need "
                "to run 'mythfrontend', not 'mythtv'.");
        return GENERIC_EXIT_SETUP_ERROR;
    }
#endif

    MythMainWindow *mainWindow = GetMythMainWindow();
    mainWindow->Init();

    TV::InitKeys();

    if (!UpgradeTVDatabaseSchema(false))
    {
        VERBOSE(VB_IMPORTANT, "Fatal Error: Incorrect database schema.");
        delete gContext;
        return GENERIC_EXIT_DB_OUTOFDATE;
    }

    TV *tv = new TV();
    if (!tv->Init())
    {
        VERBOSE(VB_IMPORTANT, "Fatal Error: Could not initialize TV class.");
        return GENERIC_EXIT_NOT_OK;
    }

    if (filename.isEmpty())
    {
        TV::StartTV(NULL, kStartTVNoFlags);
    }
    else
    {
        ProgramInfo pginfo(filename);
        TV::StartTV(&pginfo, kStartTVNoFlags);
    }

    if (priv_thread_created)
    {
        gCoreContext->addPrivRequest(MythPrivRequest::MythExit, NULL);
        pthread_join(priv_thread, NULL);
    }
    delete gContext;

    return GENERIC_EXIT_OK;
}

//.........这里部分代码省略.........
                }
                else
                {
                    ++argpos;
                }
            }
            else
            {
                cerr << "Missing argument to -l/--logfile option\n";
                return GENERIC_EXIT_INVALID_CMDLINE;
            }
        }
        else if (cmdline.Parse(a.argc(), a.argv(), argpos, cmdline_err))
        {
            if (cmdline_err)
                return GENERIC_EXIT_INVALID_CMDLINE;

            if (cmdline.WantsToExit())
                return GENERIC_EXIT_OK;
        }
        else
        {
            showUsage(cmdline);
            return GENERIC_EXIT_INVALID_CMDLINE;
        }
    }

    gContext = new MythContext(MYTH_BINARY_VERSION);
    if (!gContext->Init())
    {
        VERBOSE(VB_IMPORTANT, "mythwelcome: Could not initialize MythContext. "
                        "Exiting.");
        return GENERIC_EXIT_NO_MYTHCONTEXT;
    }

    gCoreContext->SetAppName(binname);

    if (!MSqlQuery::testDBConnection())
    {
        VERBOSE(VB_IMPORTANT, "mythwelcome: Could not open the database. "
                        "Exiting.");
        return -1;
    }

    if (!logfile.isEmpty())
    {
        if (!log_rotate(true))
            cerr << "cannot open logfile; using stdout/stderr" << endl;
        else
            signal(SIGHUP, &log_rotate_handler);
    }

    LCD::SetupLCD();

    if (LCD *lcd = LCD::Get())
        lcd->switchToTime();

    MythTranslation::load("mythfrontend");

    GetMythUI()->LoadQtConfig();

#ifdef Q_WS_MACX
    // Mac OS 10.4 and Qt 4.4 have window-focus problems
    gCoreContext->SetSetting("RunFrontendInWindow", "1");
#endif

    MythMainWindow *mainWindow = GetMythMainWindow();
    mainWindow->Init();

    initKeys();

    if (bShowSettings)
    {
        MythShutdownSettings settings;
        settings.exec();
    }
    else
    {
        MythScreenStack *mainStack = GetMythMainWindow()->GetMainStack();

        WelcomeDialog *welcome = new WelcomeDialog(mainStack, "mythwelcome");

        if (welcome->Create())
            mainStack->AddScreen(welcome, false);
        else
            return -1;

        do
        {
            qApp->processEvents();
            usleep(5000);
        } while (mainStack->TotalScreens() > 0);
    }

    DestroyMythMainWindow();

    delete gContext;

    return 0;
}

//.........这里部分代码省略.........

    setuid(getuid());

    VERBOSE(VB_IMPORTANT,
            QString("Enabled verbose msgs: %1").arg(verboseString));

    LCD::SetupLCD();
    if (LCD *lcd = LCD::Get())
        lcd->setupLEDs(RemoteGetRecordingMask);

    MythTranslation::load("mythfrontend");

    QString themename = gCoreContext->GetSetting("Theme", DEFAULT_UI_THEME);

    QString themedir = GetMythUI()->FindThemeDir(themename);
    if (themedir.isEmpty())
    {
        VERBOSE(VB_IMPORTANT, QString("Couldn't find theme '%1'")
                .arg(themename));
        return GENERIC_EXIT_NO_THEME;
    }

    GetMythUI()->LoadQtConfig();

    themename = gCoreContext->GetSetting("Theme", DEFAULT_UI_THEME);
    themedir = GetMythUI()->FindThemeDir(themename);
    if (themedir.isEmpty())
    {
        VERBOSE(VB_IMPORTANT, QString("Couldn't find theme '%1'")
                .arg(themename));
        return GENERIC_EXIT_NO_THEME;
    }

    MythMainWindow *mainWindow = GetMythMainWindow();
    mainWindow->Init();
    mainWindow->setWindowTitle(QObject::tr("MythTV Frontend"));

    // We must reload the translation after a language change and this
    // also means clearing the cached/loaded theme strings, so reload the
    // theme which also triggers a translation reload
    if (LanguageSelection::prompt())
    {
        if (!reloadTheme())
            return GENERIC_EXIT_NO_THEME;
    }

    if (!UpgradeTVDatabaseSchema(upgradeAllowed))
    {
        VERBOSE(VB_IMPORTANT,
                "Couldn't upgrade database to new schema, exiting.");
        return GENERIC_EXIT_DB_OUTOFDATE;
    }

    WriteDefaults();

    // Refresh Global/Main Menu keys after DB update in case there was no DB
    // when they were written originally
    mainWindow->ResetKeys();

    InitJumpPoints();

    internal_media_init();

    CleanupMyOldInUsePrograms();

    pmanager = new MythPluginManager();

void VideoOutputOpenGL::PrepareFrame(VideoFrame *buffer, FrameScanType t,
                                     OSD *osd)
{
    if (!gl_context)
        return;

    OpenGLLocker ctx_lock(gl_context);

    if (!buffer)
    {
        buffer = vbuffers.GetScratchFrame();
        if (m_deinterlacing && !IsBobDeint())
            t = kScan_Interlaced;
    }

    gl_context_lock.lock();
    framesPlayed = buffer->frameNumber + 1;
    gl_context_lock.unlock();

    gl_context->BindFramebuffer(0);
    if (db_letterbox_colour == kLetterBoxColour_Gray25)
        gl_context->SetBackground(127, 127, 127, 255);
    else
        gl_context->SetBackground(0, 0, 0, 255);
    gl_context->ClearFramebuffer();

    MythMainWindow *mwnd = GetMythMainWindow();
    if (gl_context->IsShared() && mwnd && window.IsEmbedding())
    {
        if (mwnd->GetPaintWindow())
            mwnd->GetPaintWindow()->setMask(QRegion());
        mwnd->draw();
    }

    if (gl_videochain)
    {
        gl_videochain->SetVideoRect(vsz_enabled ? vsz_desired_display_rect :
                                    window.GetDisplayVideoRect(),
                                    window.GetVideoRect());
        gl_videochain->PrepareFrame(buffer->top_field_first, t,
                                    m_deinterlacing, framesPlayed);
    }

    if (gl_pipchains.size())
    {
        QMap<MythPlayer*,OpenGLVideo*>::iterator it = gl_pipchains.begin();
        for (; it != gl_pipchains.end(); ++it)
        {
            if (gl_pip_ready[it.key()])
            {
                bool active = gl_pipchain_active == *it;
                (*it)->PrepareFrame(buffer->top_field_first, t,
                                    m_deinterlacing, framesPlayed, active);
            }
        }
    }

    if (m_visual && gl_painter && !window.IsEmbedding())
        m_visual->Draw(GetTotalOSDBounds(), gl_painter, NULL);

    if (osd && gl_painter && !window.IsEmbedding())
        osd->DrawDirect(gl_painter, GetTotalOSDBounds().size(), true);

    gl_context->Flush(false);

    if (vbuffers.GetScratchFrame() == buffer)
        vbuffers.SetLastShownFrameToScratch();
}

//.........这里部分代码省略.........
                startChan, freq_std, mod, tbl);
            ret = a.exec();
        }
        return (ret) ? GENERIC_EXIT_NOT_OK : GENERIC_EXIT_OK;
    }

    if (doScanList)
    {
        vector<ScanInfo> scans = LoadScanList();

        cout<<" scanid cardid sourceid processed        date"<<endl;
        for (uint i = 0; i < scans.size(); i++)
        {
            printf("%5i %6i %8i %8s    %20s\n",
                   scans[i].scanid,   scans[i].cardid,
                   scans[i].sourceid, (scans[i].processed) ? "yes" : "no",
                   scans[i].scandate.toString().toAscii().constData());
        }
        cout<<endl;

        return GENERIC_EXIT_OK;
    }

    if (scanImport)
    {
        vector<ScanInfo> scans = LoadScanList();
        cout<<"*** SCAN IMPORT START ***"<<endl;
        {
            ScanDTVTransportList list = LoadScan(scanImport);
            ChannelImporter ci(false, true, true, true, false,
                               scanFTAOnly, scanServiceRequirements);
            ci.Process(list);
        }
        cout<<"*** SCAN IMPORT END ***"<<endl;
        return GENERIC_EXIT_OK;
    }

    MythTranslation::load("mythfrontend");

    QString themename = gCoreContext->GetSetting("Theme", DEFAULT_UI_THEME);
    QString themedir = GetMythUI()->FindThemeDir(themename);
    if (themedir.isEmpty())
    {
        VERBOSE(VB_IMPORTANT, QString("Couldn't find theme '%1'")
                .arg(themename));
        return GENERIC_EXIT_NO_THEME;
    }

    MythMainWindow *mainWindow = GetMythMainWindow();
    mainWindow->Init();
    mainWindow->setWindowTitle(QObject::tr("MythTV Setup"));

    // We must reload the translation after a language change and this
    // also means clearing the cached/loaded theme strings, so reload the
    // theme which also triggers a translation reload
    if (LanguageSelection::prompt())
    {
        if (!reloadTheme())
            return GENERIC_EXIT_NO_THEME;
    }

    if (!UpgradeTVDatabaseSchema(true))
    {
        VERBOSE(VB_IMPORTANT, "Couldn't upgrade database to new schema.");
        return GENERIC_EXIT_DB_OUTOFDATE;
    }

    // Refresh Global/Main Menu keys after DB update in case there was no DB
    // when they were written originally
    mainWindow->ResetKeys();

    if (!startPrompt)
        startPrompt = new StartPrompter();
    startPrompt->handleStart();

    // Let the user select buttons, type values, scan for channels, etc.
    if (!RunMenu(themedir, themename) && !resetTheme(themedir, themename))
        return GENERIC_EXIT_NO_THEME;

    ExpertSettingsEditor *expertEditor = NULL;
    if (expertMode)
    {
        MythScreenStack *mainStack = GetMythMainWindow()->GetMainStack();
        expertEditor =
            new ExpertSettingsEditor(mainStack, "Expert Settings Editor");
        if (expertEditor->Create())
            mainStack->AddScreen(expertEditor);
        else
        {
            delete expertEditor;
            expertEditor = NULL;
            VERBOSE(VB_IMPORTANT, "Unable to create expert settings editor "
                    "window");
            return GENERIC_EXIT_OK;
        }
    }

    qApp->exec();
    // Main menu callback to ExitPrompter does CheckSetup(), cleanup and exit.
}