C++ MediaInfo::insertMetadata方法代码示例

void M3UParser::load() {
	QTime timeElapsed;
	timeElapsed.start();

	_stop = false;

	QList<MediaInfo> files;

	qDebug() << __FUNCTION__ << "Playlist:" << _filename;

	//See http://regexlib.com/DisplayPatterns.aspx

	//#EXTM3U
	static QRegExp rx_extm3u("^#EXTM3U$|^#M3U$");
	//#EXTINF:123,Sample title
	static QRegExp rx_extinf("^#EXTINF:([-+]?\\d+),(.*)$");
	//#EXTINF:Sample title
	static QRegExp rx_extinf_title("^#EXTINF:(.*)$");
	//#Just a comment
	static QRegExp rx_comment("^#.*$");

	QFile file(_filename);
	if (file.open(QIODevice::ReadOnly)) {
		QString path(QFileInfo(_filename).path());

		QTextStream stream(&file);

		if (isUtf8()) {
			stream.setCodec("UTF-8");
		} else {
			stream.setCodec(QTextCodec::codecForLocale());
		}

		MediaInfo mediaInfo;

		while (!stream.atEnd() && !_stop) {
			//Line of text excluding '\n'
			QString line(stream.readLine().trimmed());

			if (line.isEmpty()) {
				//Do nothing
			}

			else if (rx_extm3u.indexIn(line) != -1) {
				//#EXTM3U line, ignored
			}

			else if (rx_extinf.indexIn(line) != -1) {
				//#EXTINF line
				QString length(rx_extinf.cap(1));
				if (!length.isEmpty()) {
					mediaInfo.setLength(length.toInt());
				}
				QString title(rx_extinf.cap(2));
				if (!title.isEmpty()) {
					mediaInfo.insertMetadata(MediaInfo::Title, title);
				}
			}

			else if (rx_extinf_title.indexIn(line) != -1) {
				QString title(rx_extinf_title.cap(1));
				if (!title.isEmpty()) {
					mediaInfo.insertMetadata(MediaInfo::Title, title);
				}
			}

			else if (rx_comment.indexIn(line) != -1) {
				//# line, comment, ignored
			}

			else {
				bool isUrl = MediaInfo::isUrl(line);
				mediaInfo.setUrl(isUrl);
				if (isUrl) {
					mediaInfo.setFileName(line);
				} else {
					mediaInfo.setFileName(Util::canonicalFilePath(path, line));
				}

				//Add file to the list of files
				files << mediaInfo;

				//Clear the MediaInfo for the next 2 lines from the m3u playlist
				mediaInfo.clear();

				if (files.size() > FILES_FOUND_LIMIT) {
					//Emits the signal every FILES_FOUND_LIMIT files found
					emit filesFound(files);
					files.clear();
				}
			}
		}
	}

	file.close();

	if (!files.isEmpty()) {
		//Emits the signal for the remaining files found (< FILES_FOUND_LIMIT)
		emit filesFound(files);
	}
//.........这里部分代码省略.........

void CUEParser::load() {
	QTime timeElapsed;
	timeElapsed.start();

	_stop = false;

	QList<MediaInfo> files;

	qDebug() << __FUNCTION__ << "Playlist:" << _filename;

	//See http://regexlib.com/DisplayPatterns.aspx

	//REM GENRE "Alternative rock"
	//REM GENRE Pop
	static QRegExp rx_genre("^REM GENRE (.*)$");
	//REM DATE 1994
	static QRegExp rx_date("^REM DATE (\\d+)$");
	//PERFORMER "Weezer"
	static QRegExp rx_root_performer("^PERFORMER \"(.*)\"$");
	//TITLE "Weezer (The Blue Album)"
	static QRegExp rx_root_title("^TITLE \"(.*)\"$");
	//FILE "01. My Name Is Jonas - [Weezer] .wav" WAVE
	static QRegExp rx_file("^FILE \"(.*)\"");
	//  TRACK 01 AUDIO
	static QRegExp rx_track("^  TRACK (\\d+)");
	//    TITLE "No One Else"
	static QRegExp rx_title("^    TITLE \"(.*)\"$");
	//    PERFORMER "Weezer"
	static QRegExp rx_performer("^    PERFORMER \"(.*)\"$");
	//    INDEX 01 00:00:00
	static QRegExp rx_index("^    INDEX 01 (.*)$");

	QFile file(_filename);
	if (file.open(QIODevice::ReadOnly)) {
		QString path(QFileInfo(_filename).path());

		QTextStream stream(&file);

		MediaInfo mediaInfo;

		//Root elements
		QString genre;
		QString date;
		QString albumArtist;
		QString album;
		///

		QString filename;

		while (!stream.atEnd() && !_stop) {
			//Line of text, don't use trimmed()
			//since CUE sheet files contain indentation spaces
			QString line(stream.readLine());

			if (line.isEmpty()) {
				//Do nothing
			}

			else if (rx_genre.indexIn(line) != -1) {
				genre = rx_genre.cap(1);
			}

			else if (rx_date.indexIn(line) != -1) {
				date = rx_date.cap(1);
			}

			else if (rx_root_performer.indexIn(line) != -1) {
				albumArtist = rx_root_performer.cap(1);
			}

			else if (rx_root_title.indexIn(line) != -1) {
				album = rx_root_title.cap(1);
			}

			else if (rx_file.indexIn(line) != -1) {
				filename = rx_file.cap(1);
			}

			else if (rx_track.indexIn(line) != -1) {
				QString track(rx_track.cap(1));
				mediaInfo.insertMetadata(MediaInfo::TrackNumber, track);
			}

			else if (rx_title.indexIn(line) != -1) {
				QString title(rx_title.cap(1));
				mediaInfo.insertMetadata(MediaInfo::Title, title);
			}

			else if (rx_performer.indexIn(line) != -1) {
				QString performer(rx_performer.cap(1));
				mediaInfo.insertMetadata(MediaInfo::Artist, performer);
			}

			else if (rx_index.indexIn(line) != -1) {
				QString index(rx_index.cap(1));
				mediaInfo.setCueStartIndex(index);

				if (!files.isEmpty()) {
					//Now we know the CUE end index from the previous media
					files.last().setCueEndIndex(index);
//.........这里部分代码省略.........

void XSPFParser::readTrack(QXmlStreamReader & xml, MediaInfo & mediaInfo) const {
	while (!xml.atEnd() && !_stop) {
		xml.readNext();

		QString element(xml.name().toString());

		if (xml.isStartElement()) {

			//Filename
			if (element == XSPF_LOCATION) {
				QUrl url = QUrl::fromEncoded(xml.readElementText().toUtf8());
				QString location(url.toString());
				bool isUrl = MediaInfo::isUrl(location);
				mediaInfo.setUrl(isUrl);
				if (isUrl) {
					mediaInfo.setFileName(location);
				} else {
					QString path(QFileInfo(_filename).path());
					mediaInfo.setFileName(Util::canonicalFilePath(path, location));
				}
			}

			//Unique ID
			else if (element == XSPF_IDENTIFIER) {
				QString identifier(xml.readElementText());
				//FIXME not implemented yet
			}

			//Artist
			else if (element == XSPF_CREATOR) {
				QString creator(xml.readElementText());
				mediaInfo.insertMetadata(MediaInfo::Artist, creator);
			}

			//Album
			else if (element == XSPF_ALBUM) {
				QString album(xml.readElementText());
				mediaInfo.insertMetadata(MediaInfo::Album, album);
			}

			//Track number
			else if (element == XSPF_TRACKNUM) {
				QString trackNum(xml.readElementText());
				mediaInfo.insertMetadata(MediaInfo::TrackNumber, trackNum);
			}

			//Title
			else if (element == XSPF_TITLE) {
				QString title(xml.readElementText());
				mediaInfo.insertMetadata(MediaInfo::Title, title);
			}

			//Comment
			else if (element == XSPF_ANNOTATION) {
				QString annotation(xml.readElementText());
				if (mediaInfo.metadataValue(MediaInfo::Title).isEmpty()) {
					//Some people didn't understand how XSPF works
					//and confused annotation with title
					mediaInfo.insertMetadata(MediaInfo::Title, annotation);
				}
				mediaInfo.insertMetadata(MediaInfo::Comment, annotation);
			}

			//Length
			else if (element == XSPF_DURATION) {
				int duration = xml.readElementText().toInt();
				//XSPF gives us the duration in milliseconds
				//Let's convert it to seconds
				mediaInfo.setLength(duration / 1000);
			}

			//Album art URL
			else if (element == XSPF_IMAGE) {
				QString image(xml.readElementText());
				//FIXME not implemented yet
				//mediaInfo.insertMetadata(MediaInfo::AlbumArt, image);
			}

			//URL of the original web page
			else if (element == XSPF_INFO) {
				QString info(xml.readElementText());
				mediaInfo.insertMetadata(MediaInfo::URL, info);
			}

			//Meta
			else if (element == XSPF_META) {

				//These tags are specific to foobar2000 XSPF plugin

				QXmlStreamAttributes attributes = xml.attributes();

				//Date
				if (attributes.hasAttribute(XSPF_FOOBAR2000_DATE)) {
					QString date(attributes.value(XSPF_FOOBAR2000_DATE).toString());
					mediaInfo.insertMetadata(MediaInfo::Year, date);
				}

				//Genre
				else if (attributes.hasAttribute(XSPF_FOOBAR2000_GENRE)) {
					QString genre(attributes.value(XSPF_FOOBAR2000_GENRE).toString());
//.........这里部分代码省略.........