NewPipeExtractor/DashMpdParser.java

94 lines
3.8 KiB
Java

package org.schabi.newpipe.extractor;
import org.schabi.newpipe.extractor.exceptions.ParsingException;
import org.schabi.newpipe.extractor.exceptions.ReCaptchaException;
import org.schabi.newpipe.extractor.stream_info.AudioStream;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.NodeList;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.List;
import java.util.Vector;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
/**
* Created by Christian Schabesberger on 02.02.16.
*
* Copyright (C) Christian Schabesberger 2016 <chris.schabesberger@mailbox.org>
* DashMpdParser.java is part of NewPipe.
*
* NewPipe is free software: you can redistribute it and/or modify
* 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.
*
* NewPipe is distributed in the hope that it will be useful,
* 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
* along with NewPipe. If not, see <http://www.gnu.org/licenses/>.
*/
public class DashMpdParser {
private DashMpdParser() {
}
static class DashMpdParsingException extends ParsingException {
DashMpdParsingException(String message, Exception e) {
super(message, e);
}
}
public static List<AudioStream> getAudioStreams(String dashManifestUrl)
throws DashMpdParsingException, ReCaptchaException {
String dashDoc;
Downloader downloader = NewPipe.getDownloader();
try {
dashDoc = downloader.download(dashManifestUrl);
} catch(IOException ioe) {
throw new DashMpdParsingException("Could not get dash mpd: " + dashManifestUrl, ioe);
} catch (ReCaptchaException e) {
throw new ReCaptchaException("reCaptcha Challenge needed");
}
Vector<AudioStream> audioStreams = new Vector<>();
try {
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
DocumentBuilder builder = factory.newDocumentBuilder();
InputStream stream = new ByteArrayInputStream(dashDoc.getBytes());
Document doc = builder.parse(stream);
NodeList adaptationSetList = doc.getElementsByTagName("AdaptationSet");
for(int i = 0; i < adaptationSetList.getLength(); i++) {
Element adaptationSet = (Element) adaptationSetList.item(i);
String memeType = adaptationSet.getAttribute("mimeType");
if(memeType.contains("audio")) {
Element representation = (Element) adaptationSet.getElementsByTagName("Representation").item(0);
String url = representation.getElementsByTagName("BaseURL").item(0).getTextContent();
int bandwidth = Integer.parseInt(representation.getAttribute("bandwidth"));
int samplingRate = Integer.parseInt(representation.getAttribute("audioSamplingRate"));
int format = -1;
if(memeType.equals(MediaFormat.WEBMA.mimeType)) {
format = MediaFormat.WEBMA.id;
} else if(memeType.equals(MediaFormat.M4A.mimeType)) {
format = MediaFormat.M4A.id;
}
audioStreams.add(new AudioStream(url, format, bandwidth, samplingRate));
}
}
}
catch(Exception e) {
throw new DashMpdParsingException("Could not parse Dash mpd", e);
}
return audioStreams;
}
}