C++ MetadataLookup类代码示例

void dumpAllLookups(RetsMetadata * metadata, MetadataResource * resource)
{
    string resourceName = resource->GetResourceID();
    
    MetadataLookupList classes =
        metadata->GetAllLookups(resourceName);
    MetadataLookupList::iterator i;
    for (i = classes.begin(); i != classes.end(); i++)
    {
        MetadataLookup * lookup = *i;
        cout << "Resource name: " << resourceName << " ["
             << resource->GetStandardName() << "]" << endl;
        cout << "Lookup name: " << lookup->GetLookupName() << " ("
             << lookup->GetVisibleName() << ")";

        if (!lookup->GetMetadataEntryID().empty())
        {
            cout << " MetadataEntryID: " << lookup->GetMetadataEntryID();
        }
            
        cout << endl;
        dumpAllLookupTypes(metadata, lookup);
        cout << endl;
    }
}

MetadataLookup* LookupFromProgramInfo(ProgramInfo *pginfo)
{
    uint runtimesecs = pginfo->GetRecordingStartTime()
                           .secsTo(pginfo->GetRecordingEndTime());
    uint runtime = (runtimesecs/60);

    MetadataLookup *ret = new MetadataLookup(kMetadataRecording, kUnknownVideo,
        qVariantFromValue(pginfo), kLookupData, false, false, false, false, false,
        pginfo->GetHostname(),pginfo->GetBasename(),pginfo->GetTitle(),
        QStringList() << pginfo->GetCategory(), pginfo->GetStars() * 10,
        pginfo->GetSubtitle(), pginfo->GetDescription(), pginfo->GetChanID(),
        pginfo->GetChanNum(), pginfo->GetChannelSchedulingID(),
        pginfo->GetChannelName(), pginfo->GetChannelPlaybackFilters(),
        pginfo->GetRecordingGroup(), pginfo->GetPlaybackGroup(),
        pginfo->GetSeriesID(), pginfo->GetProgramID(), pginfo->GetStorageGroup(),
        pginfo->GetScheduledStartTime(), pginfo->GetScheduledEndTime(),
        pginfo->GetRecordingStartTime(), pginfo->GetRecordingEndTime(),
        pginfo->GetProgramFlags(), pginfo->GetAudioProperties(),
        pginfo->GetVideoProperties(), pginfo->GetSubtitleType(),
        pginfo->GetYearOfInitialRelease(), pginfo->GetOriginalAirDate(),
        pginfo->GetLastModifiedTime(), runtime, runtimesecs);

    ret->SetSeason(pginfo->GetSeason());
    ret->SetEpisode(pginfo->GetEpisode());
    ret->SetInetref(pginfo->GetInetRef());

    return ret;
}

QDomDocument CreateMetadataXML(ProgramInfo *pginfo)
{
    QDomDocument doc("MythMetadataXML");

    MetadataLookup *lookup = LookupFromProgramInfo(pginfo);
    if (lookup)
        doc = CreateMetadataXML(lookup);

    lookup->DecrRef();
    lookup = nullptr;

    return doc;
}

bool MetadataDownload::findBestMatch(MetadataLookupList list,
                                           QString originaltitle)
{
    QStringList titles;

    // Build a list of all the titles
    for (MetadataLookupList::const_iterator i = list.begin();
            i != list.end(); ++i)
    {
        titles.append((*i)->GetTitle());
    }

    // Apply Levenshtein distance algorithm to determine closest match
    QString bestTitle = nearestName(originaltitle, titles);

    // If no "best" was chosen, give up.
    if (bestTitle.isEmpty())
    {
        LOG(VB_GENERAL, LOG_ERR,
            QString("No adequate match or multiple "
                    "matches found for %1.  Update manually.")
                    .arg(originaltitle));
        return false;
    }

    LOG(VB_GENERAL, LOG_INFO, QString("Best Title Match For %1: %2")
                    .arg(originaltitle).arg(bestTitle));

    // Grab the one item that matches the besttitle (IMPERFECT)
    for (MetadataLookupList::const_iterator i = list.begin();
            i != list.end(); ++i)
    {
        if ((*i)->GetTitle() == bestTitle)
        {
            MetadataLookup *newlookup = (*i);
            newlookup->SetStep(kLookupData);

            prependLookup(newlookup);
            return true;
        }
    }

    return false;
}

void GameUI::StartGameImageSet(MythGenericTree *node, QStringList coverart,
                                     QStringList fanart, QStringList screenshot)
{
    if (!node)
        return;

    RomInfo *metadata = qVariantValue<RomInfo *>(node->GetData());

    if (!metadata)
        return;

    ArtworkMap map;

    QString inetref = metadata->Inetref();
    QString system = metadata->System();
    QString title = metadata->Gamename();

    if (metadata->Boxart().isEmpty() && coverart.size())
    {
        ArtworkInfo info;
        info.url = coverart.takeAt(0).trimmed();
        map.insert(kArtworkCoverart, info);
    }

    if (metadata->Fanart().isEmpty() && fanart.size())
    {
        ArtworkInfo info;
        info.url = fanart.takeAt(0).trimmed();
        map.insert(kArtworkFanart, info);
    }

    if (metadata->Screenshot().isEmpty() && screenshot.size())
    {
        ArtworkInfo info;
        info.url = screenshot.takeAt(0).trimmed();
        map.insert(kArtworkScreenshot, info);
    }

    MetadataLookup *lookup = new MetadataLookup();
    lookup->SetTitle(metadata->Gamename());
    lookup->SetSystem(metadata->System());
    lookup->SetInetref(metadata->Inetref());
    lookup->SetType(kMetadataGame);
    lookup->SetDownloads(map);
    lookup->SetData(qVariantFromValue(node));

    m_imageDownload->addDownloads(lookup);
}

// TODO
// using the MetadataLookup object as both argument input, and parsed output,
// is clumsy. break the inputs out into a separate object, and spawn a new
// MetadataLookup object in ParseMetadataItem, rather than requiring an
// existing one to reuse.
MetadataLookupList MetaGrabberScript::RunGrabber(const QStringList &args,
                        MetadataLookup *lookup, bool passseas)
{
    MythSystemLegacy grabber(m_fullcommand, args, kMSStdOut);
    MetadataLookupList list;

    LOG(VB_GENERAL, LOG_INFO, QString("Running Grabber: %1 %2")
        .arg(m_fullcommand).arg(args.join(" ")));

    grabber.Run();
    if (grabber.Wait() != GENERIC_EXIT_OK)
        return list;

    QByteArray result = grabber.ReadAll();
    if (!result.isEmpty())
    {
        QDomDocument doc;
        doc.setContent(result, true);
        QDomElement root = doc.documentElement();
        QDomElement item = root.firstChildElement("item");

        while (!item.isNull())
        {
            MetadataLookup *tmp = ParseMetadataItem(item, lookup, passseas);
            tmp->SetInetref(QString("%1_%2").arg(m_command)
                                            .arg(tmp->GetInetref()));
            if (!tmp->GetCollectionref().isEmpty())
            {
                tmp->SetCollectionref(QString("%1_%2").arg(m_command)
                                .arg(tmp->GetCollectionref()));
            }
            list.append(tmp);
            // MetadataLookup is to be owned by the list
            tmp->DecrRef();
            item = item.nextSiblingElement("item");
        }
    }
    return list;
}

void MetadataFactory::Lookup(ProgramInfo *pginfo, bool automatic,
                             bool getimages, bool allowgeneric)
{
    if (!pginfo)
        return;

    MetadataLookup *lookup = new MetadataLookup();
    lookup->SetStep(kLookupSearch);
    lookup->SetType(kMetadataRecording);
    lookup->SetSubtype(GuessLookupType(pginfo));
    lookup->SetData(qVariantFromValue(pginfo));
    lookup->SetAutomatic(automatic);
    lookup->SetHandleImages(getimages);
    lookup->SetAllowGeneric(allowgeneric);
    lookup->SetHost(gCoreContext->GetMasterHostName());
    lookup->SetTitle(pginfo->GetTitle());
    lookup->SetSubtitle(pginfo->GetSubtitle());
    lookup->SetSeason(pginfo->GetSeason());
    lookup->SetEpisode(pginfo->GetEpisode());
    lookup->SetInetref(pginfo->GetInetRef());

    if (m_lookupthread->isRunning())
        m_lookupthread->prependLookup(lookup);
    else
        m_lookupthread->addLookup(lookup);
}

void MetadataFactory::Lookup(VideoMetadata *metadata, bool automatic,
                             bool getimages, bool allowgeneric)
{
    if (!metadata)
        return;

    MetadataLookup *lookup = new MetadataLookup();

    lookup->SetStep(kLookupSearch);
    lookup->SetType(kMetadataVideo);
    lookup->SetSubtype(GuessLookupType(metadata));
    lookup->SetData(qVariantFromValue(metadata));
    lookup->SetAutomatic(automatic);
    lookup->SetHandleImages(getimages);
    lookup->SetAllowGeneric(allowgeneric);
    lookup->SetHost(metadata->GetHost());
    lookup->SetTitle(metadata->GetTitle());
    lookup->SetSubtitle(metadata->GetSubtitle());
    lookup->SetSeason(metadata->GetSeason());
    lookup->SetEpisode(metadata->GetEpisode());
    lookup->SetInetref(metadata->GetInetRef());
    lookup->SetFilename(generate_file_url("Videos", metadata->GetHost(),
                                      metadata->GetFilename()));

    if (m_lookupthread->isRunning())
        m_lookupthread->prependLookup(lookup);
    else
        m_lookupthread->addLookup(lookup);
}

void MetadataImageDownload::run()
{
    // Always handle thumbnails first, they're higher priority.
    ThumbnailData *thumb;
    while ((thumb = moreThumbs()) != NULL)
    {
        QString sFilename = getDownloadFilename(thumb->title, thumb->url);

        bool exists = QFile::exists(sFilename);
        if (!exists && !thumb->url.isEmpty())
            GetMythDownloadManager()->download(thumb->url, sFilename);

        // inform parent we have thumbnail ready for it
        if (QFile::exists(sFilename) && m_parent)
        {
            VERBOSE(VB_GENERAL|VB_EXTRA,
                    QString("Threaded Image Thumbnail Download: %1")
                    .arg(sFilename));
            thumb->url = sFilename;
            QCoreApplication::postEvent(m_parent,
                           new ThumbnailDLEvent(thumb));
        }
        else
            delete thumb;
    }

    MetadataLookup *lookup;
    while ((lookup = moreDownloads()) != NULL)
    {
        DownloadMap downloads = lookup->GetDownloads();
        DownloadMap downloaded;

        for (DownloadMap::iterator i = downloads.begin();
                i != downloads.end(); ++i)
        {
            ArtworkType type = i.key();
            ArtworkInfo info = i.value();
            QString filename = getDownloadFilename( type, lookup,
                                   info.url );
            if (lookup->GetHost().isEmpty())
            {
                QString path = getLocalWritePath(lookup->GetType(), type);
                QDir dirPath(path);
                if (!dirPath.exists())
                    if (!dirPath.mkpath(path))
                    {
                        VERBOSE(VB_GENERAL,
                             QString("Metadata Image Download: Unable to create "
                                     "path %1, aborting download.").arg(path));
                        continue;
                    }
                QString finalfile = path + "/" + filename;
                QString oldurl = info.url;
                info.url = finalfile;
                if (!QFile::exists(finalfile) || lookup->GetAllowOverwrites())
                {
                    QFile dest_file(finalfile);
                    if (dest_file.exists())
                    {
                        QFileInfo fi(finalfile);
                        GetMythUI()->RemoveFromCacheByFile(fi.fileName());
                        dest_file.remove();
                    }

                    VERBOSE(VB_GENERAL,
                         QString("Metadata Image Download: %1 ->%2")
                         .arg(oldurl).arg(finalfile));
                    QByteArray *download = new QByteArray();
                    GetMythDownloadManager()->download(oldurl, download);

                    QImage testImage;
                    bool didLoad = testImage.loadFromData(*download);
                    if (!didLoad)
                    {
                        VERBOSE(VB_IMPORTANT,QString("Tried to write %1, "
                                "but it appears to be an HTML redirect "
                                "(filesize %2).")
                                .arg(oldurl).arg(download->size()));
                        delete download;
                        download = NULL;
                        continue;
                    }

                    if (dest_file.open(QIODevice::WriteOnly))
                    {
                        off_t size = dest_file.write(*download, download->size());
                        if (size != download->size())
                        {
                            VERBOSE(VB_IMPORTANT,
                            QString("Image Download: Error Writing Image "
                                    "to file: %1").arg(finalfile));
                        }
                        else
                            downloaded.insert(type, info);
                    }

                    delete download;
                }
                else
                    downloaded.insert(type, info);
//.........这里部分代码省略.........

void EditMetadataDialog::OnSearchListSelection(ArtworkInfo info, VideoArtworkType type)
{
    QString msg = tr("Downloading selected artwork...");
    createBusyDialog(msg);

    MetadataLookup *lookup = new MetadataLookup();
    lookup->SetType(kMetadataVideo);
    if (m_workingMetadata->GetSeason() > 0 ||
            m_workingMetadata->GetEpisode() > 0)
        lookup->SetSubtype(kProbableTelevision);
    else if (m_workingMetadata->GetSubtitle().isEmpty())
        lookup->SetSubtype(kProbableMovie);
    else
        lookup->SetSubtype(kUnknownVideo);
    lookup->SetHost(m_workingMetadata->GetHost());
    lookup->SetAutomatic(true);
    lookup->SetData(qVariantFromValue<VideoArtworkType>(type));

    ArtworkMap downloads;
    downloads.insert(type, info);
    lookup->SetDownloads(downloads);
    lookup->SetAllowOverwrites(true);
    lookup->SetTitle(m_workingMetadata->GetTitle());
    lookup->SetSubtitle(m_workingMetadata->GetSubtitle());
    lookup->SetSeason(m_workingMetadata->GetSeason());
    lookup->SetEpisode(m_workingMetadata->GetEpisode());
    lookup->SetInetref(m_workingMetadata->GetInetRef());

    m_imageDownload->addDownloads(lookup);
}

void ImportFile::doGetRecording(void)
{
    MythUIButtonListItem *item = m_recordingButtonList->GetItemCurrent();

    if (!item)
        return;

    ImportItem *i = item->GetData().value<ImportItem *>();

    if (!i)
        return;

    uint duration = 60; //i->actualDuration;
    QString videoFile = getTempDirectory() + "work/video.ts";
    QString mxmlFile = getTempDirectory() + "work/video.mxml";

    // record the mp4 video stream
    QString recCommand = QString("mythffmpeg -y -i %1 -t %2 -acodec copy -vcodec copy %3")
                                 .arg(STREAMURL).arg(duration).arg(videoFile);

    QScopedPointer<MythSystem> cmd(MythSystem::Create(recCommand, kMSRunShell));
    cmd->Wait(0);
    if (cmd.data()->GetExitCode() != GENERIC_EXIT_OK)
    {
        LOG(VB_GENERAL, LOG_ERR, QString("ERROR - ffmpeg exited with result: %1").arg(cmd.data()->GetExitCode()));
        return;
    }

    // create a mxml file with the metadata for this recording
    QStringList categories(i->category.split(','));
    MetadataLookup *lookup = new MetadataLookup(kMetadataVideo, kProbableTelevision, QVariant(), kLookupSearch, false, false, false, false, false,
                                                "", videoFile, i->title, categories, 0.0, i->subtitle, "", i->description, i->season, i->episode,
                                                i->startTime, 0,  i->chanNo, i->chanSign, i->chanName,
                                                i->certification, i->startTime.date().year(), i->startTime.date(), i->duration / 60, i->duration, 
                                                "", PeopleMap(), "", ArtworkMap(), DownloadMap());
    if (i->category == "Movies")
        lookup->SetVideoContentType(kContentMovie);
    else
        lookup->SetVideoContentType(kContentTelevision);

    QDomDocument mxmlDoc = CreateMetadataXML(lookup);

    // save the mxml to the file
    QFile f(mxmlFile);
    if (!f.open(QIODevice::WriteOnly))
    {
        LOG(VB_GENERAL, LOG_ERR, QString("ImportFile: Failed to open mxml file for writing - %1").arg(mxmlFile));
        return;
    }

    QTextStream t(&f);
    t << mxmlDoc.toString(4);
    f.close();

    // workout where to save the file in the Video storage group
    QString dstFile = filenameFromMetadataLookup(lookup);

    QString saveFilename;

    // copy the recording to the Video storage group
    saveFilename = gCoreContext->GenMythURL(gCoreContext->GetMasterHostName(), 0, dstFile + ".mp4", "Videos");

    bool result = RemoteFile::CopyFile(videoFile, saveFilename);
    if (!result)
    {
        LOG(VB_GENERAL, LOG_ERR, QString("ImportFile: Failed to copy video file to %1").arg(saveFilename));
        return;
    }

    // copy the metadata xml file to the Video storage group
    saveFilename = gCoreContext->GenMythURL(gCoreContext->GetMasterHostName(), 0, dstFile + ".mxml", "Videos");

    result = RemoteFile::CopyFile(mxmlFile, saveFilename);
    if (!result)
    {
        LOG(VB_GENERAL, LOG_ERR, QString("ImportFile: Failed to copy xml file to %1").arg(saveFilename));
        return;
    }
}

void GameUI::customEvent(QEvent *event)
{
    if (event->type() == DialogCompletionEvent::kEventType)
    {
        DialogCompletionEvent *dce = (DialogCompletionEvent*)(event);

        QString resultid   = dce->GetId();
        QString resulttext = dce->GetResultText();

        if (resultid == "showMenuPopup")
        {
            if (resulttext == tr("Edit Details"))
            {
                edit();
            }
            if (resulttext == tr("Scan For Changes"))
            {
                doScan();
            }
            else if (resulttext == tr("Show Information"))
            {
                showInfo();
            }
            else if (resulttext == tr("Make Favorite") ||
                     resulttext == tr("Remove Favorite"))
            {
                toggleFavorite();
            }
            else if (resulttext == tr("Retrieve Details"))
            {
                gameSearch();
            }
        }
        else if (resultid == "chooseSystemPopup")
        {
            if (!resulttext.isEmpty() && resulttext != tr("Cancel"))
            {
                MythGenericTree *node = m_gameUITree->GetCurrentNode();
                RomInfo *romInfo = qVariantValue<RomInfo *>(node->GetData());
                GameHandler::Launchgame(romInfo, resulttext);
            }
        }
        else if (resultid == "editMetadata")
        {
            MythGenericTree *node = m_gameUITree->GetCurrentNode();
            RomInfo *oldRomInfo = qVariantValue<RomInfo *>(node->GetData());
            delete oldRomInfo;

            RomInfo *romInfo = qVariantValue<RomInfo *>(dce->GetData());
            node->SetData(qVariantFromValue(romInfo));
            node->SetText(romInfo->Gamename());

            romInfo->SaveToDatabase();
            updateChangedNode(node, romInfo);
        }
        else if (resultid == "detailsPopup")
        {
            // Play button pushed
            itemClicked(0);
        }
    }
    if (event->type() == MetadataLookupEvent::kEventType)
    {
        MetadataLookupEvent *lue = (MetadataLookupEvent *)event;

        MetadataLookupList lul = lue->lookupList;

        if (m_busyPopup)
        {
            m_busyPopup->Close();
            m_busyPopup = NULL;
        }

        if (lul.isEmpty())
            return;

        if (lul.count() == 1)
        {
            OnGameSearchDone(lul.takeFirst());
        }
        else
        {
            MetadataResultsDialog *resultsdialog =
                  new MetadataResultsDialog(m_popupStack, lul);

            connect(resultsdialog, SIGNAL(haveResult(MetadataLookup*)),
                    SLOT(OnGameSearchListSelection(MetadataLookup*)),
                    Qt::QueuedConnection);

            if (resultsdialog->Create())
                m_popupStack->AddScreen(resultsdialog);
        }
    }
    else if (event->type() == MetadataLookupFailure::kEventType)
    {
        MetadataLookupFailure *luf = (MetadataLookupFailure *)event;

        MetadataLookupList lul = luf->lookupList;

        if (m_busyPopup)
//.........这里部分代码省略.........

void LookerUpper::customEvent(QEvent *levent)
{
    if (levent->type() == MetadataFactoryMultiResult::kEventType)
    {
        VERBOSE(VB_IMPORTANT, "Got a multiresult.");
        // We shouldn't get any of these.  If we do, metadataFactory->Lookup
        // was called with the wrong arguments.
    }
    else if (levent->type() == MetadataFactorySingleResult::kEventType)
    {
        MetadataFactorySingleResult *mfsr = dynamic_cast<MetadataFactorySingleResult*>(levent);

        if (!mfsr)
            return;

        MetadataLookup *lookup = mfsr->result;

        if (!lookup)
            return;

        ProgramInfo *pginfo = qVariantValue<ProgramInfo *>(lookup->GetData());

        // This null check could hang us as this pginfo would then never be removed
        if (!pginfo)
            return;

        VERBOSE(VB_GENERAL|VB_EXTRA, QString("I found the following data:"));
        VERBOSE(VB_GENERAL|VB_EXTRA, QString("        Input Title: %1").arg(pginfo->GetTitle()));
        VERBOSE(VB_GENERAL|VB_EXTRA, QString("        Input Sub:   %1").arg(pginfo->GetSubtitle()));
        VERBOSE(VB_GENERAL|VB_EXTRA, QString("        Title:       %1").arg(lookup->GetTitle()));
        VERBOSE(VB_GENERAL|VB_EXTRA, QString("        Subtitle:    %1").arg(lookup->GetSubtitle()));
        VERBOSE(VB_GENERAL|VB_EXTRA, QString("        Season:      %1").arg(lookup->GetSeason()));
        VERBOSE(VB_GENERAL|VB_EXTRA, QString("        Episode:     %1").arg(lookup->GetEpisode()));
        VERBOSE(VB_GENERAL|VB_EXTRA, QString("        Inetref:     %1").arg(lookup->GetInetref()));
        VERBOSE(VB_GENERAL|VB_EXTRA, QString("        User Rating: %1").arg(lookup->GetUserRating()));

        pginfo->SaveSeasonEpisode(lookup->GetSeason(), lookup->GetEpisode());
        pginfo->SaveInetRef(lookup->GetInetref());

        m_busyRecList.removeAll(pginfo);
    }
    else if (levent->type() == MetadataFactoryNoResult::kEventType)
    {
        MetadataFactoryNoResult *mfnr = dynamic_cast<MetadataFactoryNoResult*>(levent);

        if (!mfnr)
            return;

        MetadataLookup *lookup = mfnr->result;

        if (!lookup)
            return;

        ProgramInfo *pginfo = qVariantValue<ProgramInfo *>(lookup->GetData());

        // This null check could hang us as this pginfo would then never be removed
        if (!pginfo)
            return;

        m_busyRecList.removeAll(pginfo);
    }
}

void LookerUpper::customEvent(QEvent *levent)
{
    if (levent->type() == MetadataFactoryMultiResult::kEventType)
    {
        MetadataFactoryMultiResult *mfmr = dynamic_cast<MetadataFactoryMultiResult*>(levent);

        if (!mfmr)
            return;

        MetadataLookupList list = mfmr->results;

        if (list.count() > 1)
        {
            int yearindex = -1;

            for (int p = 0; p != list.size(); ++p)
            {
                ProgramInfo *pginfo = list[p]->GetData().value<ProgramInfo *>();

                if (pginfo && !pginfo->GetSeriesID().isEmpty() &&
                    pginfo->GetSeriesID() == (list[p])->GetTMSref())
                {
                    MetadataLookup *lookup = list[p];
                    if (lookup->GetSubtype() != kProbableGenericTelevision)
                        pginfo->SaveSeasonEpisode(lookup->GetSeason(), lookup->GetEpisode());
                    pginfo->SaveInetRef(lookup->GetInetref());
                    m_busyRecList.removeAll(pginfo);
                    return;
                }
                else if (pginfo && pginfo->GetYearOfInitialRelease() != 0 &&
                         (list[p])->GetYear() != 0 &&
                         pginfo->GetYearOfInitialRelease() == (list[p])->GetYear())
                {
                    if (yearindex != -1)
                    {
                        LOG(VB_GENERAL, LOG_INFO, "Multiple results matched on year. No definite "
                                      "match could be found.");
                        m_busyRecList.removeAll(pginfo);
                        return;
                    }
                    else
                    {
                        LOG(VB_GENERAL, LOG_INFO, "Matched from multiple results based on year. ");
                        yearindex = p;
                    }
                }
            }

            if (yearindex > -1)
            {
                MetadataLookup *lookup = list[yearindex];
                ProgramInfo *pginfo = lookup->GetData().value<ProgramInfo *>();
                if (lookup->GetSubtype() != kProbableGenericTelevision)
                    pginfo->SaveSeasonEpisode(lookup->GetSeason(), lookup->GetEpisode());
                pginfo->SaveInetRef(lookup->GetInetref());
                m_busyRecList.removeAll(pginfo);
                return;
            }

            LOG(VB_GENERAL, LOG_INFO, "Unable to match this title, too many possible matches. "
                                      "You may wish to manually set the season, episode, and "
                                      "inetref in the 'Watch Recordings' screen.");

            ProgramInfo *pginfo = list[0]->GetData().value<ProgramInfo *>();

            if (pginfo)
            {
                m_busyRecList.removeAll(pginfo);
            }
        }
    }
    else if (levent->type() == MetadataFactorySingleResult::kEventType)
    {
        MetadataFactorySingleResult *mfsr =
            dynamic_cast<MetadataFactorySingleResult*>(levent);

        if (!mfsr)
            return;

        MetadataLookup *lookup = mfsr->result;

        if (!lookup)
            return;

        ProgramInfo *pginfo = lookup->GetData().value<ProgramInfo *>();

        // This null check could hang us as this pginfo would then never be
        // removed
        if (!pginfo)
            return;

        LOG(VB_GENERAL, LOG_DEBUG, "I found the following data:");
        LOG(VB_GENERAL, LOG_DEBUG,
            QString("        Input Title: %1").arg(pginfo->GetTitle()));
        LOG(VB_GENERAL, LOG_DEBUG,
            QString("        Input Sub:   %1").arg(pginfo->GetSubtitle()));
        LOG(VB_GENERAL, LOG_DEBUG,
            QString("        Title:       %1").arg(lookup->GetTitle()));
        LOG(VB_GENERAL, LOG_DEBUG,
            QString("        Subtitle:    %1").arg(lookup->GetSubtitle()));
//.........这里部分代码省略.........

void MetadataImageDownload::run()
{
    RunProlog();

    // Always handle thumbnails first, they're higher priority.
    ThumbnailData *thumb;
    while ((thumb = moreThumbs()) != NULL)
    {
        QString sFilename = getDownloadFilename(thumb->title, thumb->url);

        bool exists = QFile::exists(sFilename);
        if (!exists && !thumb->url.isEmpty())
        {
            if (!GetMythDownloadManager()->download(thumb->url, sFilename))
            {
                LOG(VB_GENERAL, LOG_ERR,
                    QString("MetadataImageDownload: failed to download thumbnail from: %1")
                    .arg(thumb->url));

                delete thumb;
                continue;
            }
        }

        // inform parent we have thumbnail ready for it
        if (QFile::exists(sFilename) && m_parent)
        {
            LOG(VB_GENERAL, LOG_DEBUG,
                    QString("Threaded Image Thumbnail Download: %1")
                    .arg(sFilename));
            thumb->url = sFilename;
            QCoreApplication::postEvent(m_parent,
                           new ThumbnailDLEvent(thumb));
        }
        else
            delete thumb;
    }

    MetadataLookup *lookup;
    while ((lookup = moreDownloads()) != NULL)
    {
        DownloadMap downloads = lookup->GetDownloads();
        DownloadMap downloaded;

        for (DownloadMap::iterator i = downloads.begin();
                i != downloads.end(); ++i)
        {
            VideoArtworkType type = i.key();
            ArtworkInfo info = i.value();
            QString filename = getDownloadFilename( type, lookup,
                                   info.url );
            if (lookup->GetHost().isEmpty())
            {
                QString path = getLocalWritePath(lookup->GetType(), type);
                QDir dirPath(path);
                if (!dirPath.exists())
                    if (!dirPath.mkpath(path))
                    {
                        LOG(VB_GENERAL, LOG_ERR,
                            QString("Metadata Image Download: Unable to create "
                                    "path %1, aborting download.").arg(path));
                        QCoreApplication::postEvent(m_parent,
                                    new ImageDLFailureEvent(lookup));
                        continue;
                    }
                QString finalfile = path + "/" + filename;
                QString oldurl = info.url;
                info.url = finalfile;
                if (!QFile::exists(finalfile) || lookup->GetAllowOverwrites())
                {
                    QFile dest_file(finalfile);
                    if (dest_file.exists())
                    {
                        QFileInfo fi(finalfile);
                        GetMythUI()->RemoveFromCacheByFile(fi.fileName());
                        dest_file.remove();
                    }

                    LOG(VB_GENERAL, LOG_INFO,
                        QString("Metadata Image Download: %1 ->%2")
                         .arg(oldurl).arg(finalfile));
                    QByteArray *download = new QByteArray();
                    GetMythDownloadManager()->download(oldurl, download);

                    QImage testImage;
                    bool didLoad = testImage.loadFromData(*download);
                    if (!didLoad)
                    {
                        LOG(VB_GENERAL, LOG_ERR,
                            QString("Tried to write %1, but it appears to be "
                                    "an HTML redirect (filesize %2).")
                                .arg(oldurl).arg(download->size()));
                        delete download;
                        download = NULL;
                        QCoreApplication::postEvent(m_parent,
                                    new ImageDLFailureEvent(lookup));
                        continue;
                    }

                    if (dest_file.open(QIODevice::WriteOnly))
//.........这里部分代码省略.........