C++ MusicMetadata::Filename方法代码示例

void Playlist::computeSize(double &size_in_MB, double &size_in_sec)
{
    //double child_MB;
    //double child_sec;

    // Clear return values
    size_in_MB = 0.0;
    size_in_sec = 0.0;

    SongList::const_iterator it = m_songs.begin();
    for (; it != m_songs.end(); ++it)
    {
        if ((*it)->isCDTrack())
            continue;

        // Normal track
        MusicMetadata *tmpdata = (*it);
        if (tmpdata)
        {
            if (tmpdata->Length() > 0)
                size_in_sec += tmpdata->Length();
            else
                LOG(VB_GENERAL, LOG_ERR, "Computing track lengths. "
                                         "One track <=0");

            // Check tmpdata->Filename
            QFileInfo finfo(tmpdata->Filename());

            size_in_MB += finfo.size() / 1000000;
        }
    }
}

void ImportMusicDialog::fillWidgets()
{
    if (!m_tracks->empty())
    {
        // update current
        //: %1 is the current track,
        //: %2 is the number of tracks
        m_currentText->SetText(tr("%1 of %2", "Current track position")
                .arg(m_currentTrack + 1).arg(m_tracks->size()));

        MusicMetadata *meta = m_tracks->at(m_currentTrack)->metadata;
        m_filenameText->SetText(meta->Filename());
        m_compilationCheck->SetCheckState(meta->Compilation());
        m_compartistText->SetText(meta->CompilationArtist());
        m_artistText->SetText(meta->Artist());
        m_albumText->SetText(meta->Album());
        m_titleText->SetText(meta->Title());
        m_genreText->SetText(meta->Genre());
        m_yearText->SetText(QString::number(meta->Year()));
        m_trackText->SetText(QString::number(meta->Track()));
        if (m_tracks->at(m_currentTrack)->isNewTune)
        {
            m_coverartButton->SetVisible(false);
            m_statusText->SetText(tr("New File"));
        }
        else
        {
            m_coverartButton->SetVisible(true);
            m_statusText->SetText(tr("Already in Database"));
        }
    }
    else
    {
        // update current
        m_currentText->SetText(tr("Not found"));
        m_filenameText->Reset();
        m_compilationCheck->SetCheckState(false);
        m_compartistText->Reset();
        m_artistText->Reset();
        m_albumText->Reset();
        m_titleText->Reset();
        m_genreText->Reset();
        m_yearText->Reset();
        m_trackText->Reset();
        m_statusText->Reset();
        m_coverartButton->SetVisible(false);
    }
}

/*!
 * \brief Insert file details into database.
 *        If it is an audio file, read the metadata and insert
 *        that information at the same time.
 *
 *        If it is an image file, just insert the filename and
 *        type.
 *
 * \param filename Full path to file.
 *
 * \returns Nothing.
 */
void MusicFileScanner::AddFileToDB(const QString &filename)
{
    QString extension = filename.section( '.', -1 ) ;
    QString directory = filename;
    directory.remove(0, m_startdir.length());
    directory = directory.section( '/', 0, -2);

    QString nameFilter = gCoreContext->GetSetting("AlbumArtFilter", "*.png;*.jpg;*.jpeg;*.gif;*.bmp");

    // If this file is an image, insert the details into the music_albumart table
    if (nameFilter.indexOf(extension.toLower()) > -1)
    {
        QString name = filename.section( '/', -1);

        MSqlQuery query(MSqlQuery::InitCon());
        query.prepare("INSERT INTO music_albumart SET filename = :FILE, "
                      "directory_id = :DIRID, imagetype = :TYPE;");
        query.bindValue(":FILE", name);
        query.bindValue(":DIRID", m_directoryid[directory]);
        query.bindValue(":TYPE", AlbumArtImages::guessImageType(name));

        if (!query.exec() || query.numRowsAffected() <= 0)
        {
            MythDB::DBError("music insert artwork", query);
        }
        return;
    }

    LOG(VB_FILE, LOG_INFO,
        QString("Reading metadata from %1").arg(filename));
    MusicMetadata *data = MetaIO::readMetadata(filename);
    if (data)
    {
        data->setFileSize((quint64)QFileInfo(filename).size());

        QString album_cache_string;

        // Set values from cache
        int did = m_directoryid[directory];
        if (did > 0)
            data->setDirectoryId(did);

        int aid = m_artistid[data->Artist().toLower()];
        if (aid > 0)
        {
            data->setArtistId(aid);

            // The album cache depends on the artist id
            album_cache_string = data->getArtistId() + "#"
                                 + data->Album().toLower();

            if (m_albumid[album_cache_string] > 0)
                data->setAlbumId(m_albumid[album_cache_string]);
        }

        int gid = m_genreid[data->Genre().toLower()];
        if (gid > 0)
            data->setGenreId(gid);

        // Commit track info to database
        data->dumpToDatabase();

        // Update the cache
        m_artistid[data->Artist().toLower()] =
            data->getArtistId();

        m_genreid[data->Genre().toLower()] =
            data->getGenreId();

        album_cache_string = data->getArtistId() + "#"
                             + data->Album().toLower();
        m_albumid[album_cache_string] = data->getAlbumId();

        // read any embedded images from the tag
        MetaIO *tagger = MetaIO::createTagger(filename);

        if (tagger)
        {
            if (tagger->supportsEmbeddedImages())
            {
                AlbumArtList artList = tagger->getAlbumArtList(data->Filename());
                data->setEmbeddedAlbumArt(artList);
                data->getAlbumArtImages()->dumpToDatabase();
            }
            delete tagger;
        }

        delete data;
//.........这里部分代码省略.........

static int ExtractImage(const MythUtilCommandLineParser &cmdline)
{
    if (cmdline.toString("songid").isEmpty())
    {
        LOG(VB_GENERAL, LOG_ERR, "Missing --songid option");
        return GENERIC_EXIT_INVALID_CMDLINE;
    }

    if (cmdline.toString("imagetype").isEmpty())
    {
        LOG(VB_GENERAL, LOG_ERR, "Missing --imagetype option");
        return GENERIC_EXIT_INVALID_CMDLINE;
    }

    int songID = cmdline.toInt("songid");
    ImageType type = (ImageType)cmdline.toInt("imagetype");

    MusicMetadata *mdata = MusicMetadata::createFromID(songID);
    if (!mdata)
    {
        LOG(VB_GENERAL, LOG_ERR, QString("Cannot find metadata for trackid: %1").arg(songID));
        return GENERIC_EXIT_NOT_OK;
    }

    AlbumArtImage *image = mdata->getAlbumArtImages()->getImage(type);
    if (!image)
    {
        LOG(VB_GENERAL, LOG_ERR, QString("Cannot find image of type: %1").arg(type));
        return GENERIC_EXIT_NOT_OK;
    }

    MetaIO *tagger = mdata->getTagger();
    if (!tagger)
    {
        LOG(VB_GENERAL, LOG_ERR, QString("Cannot find a tagger for this file: %1").arg(mdata->Filename(false)));
        return GENERIC_EXIT_NOT_OK;
    }


    if (!image->embedded || !tagger->supportsEmbeddedImages())
    {
        LOG(VB_GENERAL, LOG_ERR, QString("Either the image isn't embedded or the tagger doesn't support embedded images"));
        return GENERIC_EXIT_NOT_OK;
    }

    // find the tracks actual filename
    StorageGroup musicGroup("Music", gCoreContext->GetHostName(), false);
    QString trackFilename =  musicGroup.FindFile(mdata->Filename(false));

    // where are we going to save the image
    QString path;
    StorageGroup artGroup("MusicArt", gCoreContext->GetHostName(), false);
    QStringList dirList = artGroup.GetDirList();
    if (dirList.size())
        path = artGroup.FindNextDirMostFree();

    if (!QDir(path).exists())
    {
        LOG(VB_GENERAL, LOG_ERR, "Cannot find a directory in the 'MusicArt' storage group to save to");
        return GENERIC_EXIT_NOT_OK;
    }

    path += "/AlbumArt/";
    QDir dir(path);

    QString filename = QString("%1-%2.jpg").arg(mdata->ID()).arg(AlbumArtImages::getTypeFilename(image->imageType));

    if (QFile::exists(path + filename))
        QFile::remove(path + filename);

    if (!dir.exists())
        dir.mkpath(path);

    QImage *saveImage = tagger->getAlbumArt(trackFilename, image->imageType);
    if (saveImage)
    {
        saveImage->save(path + filename, "JPEG");
        delete saveImage;
    }

    delete tagger;

    // tell any clients that the albumart for this track has changed
    gCoreContext->SendMessage(QString("MUSIC_ALBUMART_CHANGED %1 %2").arg(songID).arg(type));

    return GENERIC_EXIT_OK;
}

int Playlist::CreateCDMP3(void)
{
    // Check & get global settings
    if (!gCoreContext->GetNumSetting("CDWriterEnabled"))
    {
        LOG(VB_GENERAL, LOG_ERR, "CD Writer is not enabled.");
        return 1;
    }

    QString scsidev = MediaMonitor::defaultCDWriter();
    if (scsidev.isEmpty())
    {
        LOG(VB_GENERAL, LOG_ERR, "No CD Writer device defined.");
        return 1;
    }

    int disksize = gCoreContext->GetNumSetting("CDDiskSize", 2);
    QString writespeed = gCoreContext->GetSetting("CDWriteSpeed", "2");
    bool MP3_dir_flag = gCoreContext->GetNumSetting("CDCreateDir", 1);

    double size_in_MB = 0.0;

    QStringList reclist;

    SongList::const_iterator it = m_songs.begin();
    for (; it != m_songs.end(); ++it)
    {
        if ((*it)->isCDTrack())
            continue;

        // Normal track
        MusicMetadata *tmpdata = (*it);
        if (tmpdata)
        {
            // check filename..
            QFileInfo testit(tmpdata->Filename());
            if (!testit.exists())
                continue;
            size_in_MB += testit.size() / 1000000.0;
            QString outline;
            if (MP3_dir_flag)
            {
                if (tmpdata->Artist().length() > 0)
                    outline += tmpdata->Artist() + "/";
                if (tmpdata->Album().length() > 0)
                    outline += tmpdata->Album() + "/";
            }

            outline += "=";
            outline += tmpdata->Filename();

            reclist += outline;
        }
    }

    int max_size;
    if (disksize == 0)
        max_size = 650;
    else
        max_size = 700;

    if (size_in_MB >= max_size)
    {
        LOG(VB_GENERAL, LOG_ERR, "MP3 CD creation aborted -- cd size too big.");
        return 1;
    }

    // probably should tie stdout of mkisofs to stdin of cdrecord sometime
    QString tmptemplate("/tmp/mythmusicXXXXXX");

    QString tmprecordlist = createTempFile(tmptemplate);
    if (tmprecordlist == tmptemplate)
    {
        LOG(VB_GENERAL, LOG_ERR, "Unable to open temporary file");
        return 1;
    }

    QString tmprecordisofs = createTempFile(tmptemplate);
    if (tmprecordisofs == tmptemplate)
    {
        LOG(VB_GENERAL, LOG_ERR, "Unable to open temporary file");
        return 1;
    }

    QFile reclistfile(tmprecordlist);

    if (!reclistfile.open(QIODevice::WriteOnly))
    {
        LOG(VB_GENERAL, LOG_ERR, "Unable to open temporary file");
        return 1;
    }

    QTextStream recstream(&reclistfile);

    QStringList::Iterator iter;

    for (iter = reclist.begin(); iter != reclist.end(); ++iter)
    {
        recstream << *iter << "\n";
    }
//.........这里部分代码省略.........