Java tutorial
package org.linphone.tools; /* CodecDownloader.java Copyright (C) 2016 Belledonne Communications, Grenoble, France This program 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 2 of the License, or (at your option) any later version. This program 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 this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ import android.content.Context; import java.io.File; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import java.net.HttpURLConnection; import java.net.URL; import java.util.ArrayList; import org.apache.commons.compress.compressors.bzip2.*; import org.linphone.core.OpenH264DownloadHelperListener; import org.linphone.mediastream.Log; /** * @author Erwan Croze */ public class OpenH264DownloadHelper { private OpenH264DownloadHelperListener openH264DownloadHelperListener; private ArrayList<Object> userData; private String fileDirection; private String nameLib; private String urlDownload; private String nameFileDownload; private String licenseMessage; /** * Default values * nameLib = "libopenh264-1.5.so" * urlDownload = "http://ciscobinary.openh264.org/libopenh264-1.5.0-android19.so.bz2" * nameFileDownload = "libopenh264-1.5.0-android19.so.bz2" */ public OpenH264DownloadHelper(Context context) { userData = new ArrayList<Object>(); licenseMessage = "OpenH264 Video Codec provided by Cisco Systems, Inc."; nameLib = "libopenh264.so"; urlDownload = "http://ciscobinary.openh264.org/libopenh264-1.5.0-android19.so.bz2"; nameFileDownload = "libopenh264-1.5.0-android19.so.bz2"; if (context.getFilesDir() != null) { fileDirection = context.getFilesDir().toString(); } } /** * Set OpenH264DownloadHelperListener * @param h264Listener */ public void setOpenH264HelperListener(OpenH264DownloadHelperListener h264Listener) { openH264DownloadHelperListener = h264Listener; } /** * @return OpenH264DownloadHelperListener */ public OpenH264DownloadHelperListener getOpenH264DownloadHelperListener() { return openH264DownloadHelperListener; } /** * @param index of object in UserData list * @constraints (index >= 0 && index < userData.size()) * @return object if constraints are met */ public Object getUserData(int index) { if (index < 0 || index >= userData.size()) return null; return userData.get(index); } /** * Adding of object into UserData list * @param object * @return index of object in UserData list */ public int setUserData(Object object) { this.userData.add(object); return this.userData.indexOf(object); } /** * @param index * @param object * @constraints (index >= 0 && index < userData.size()) */ public void setUserData(int index, Object object) { if (index < 0 || index > userData.size()) return; this.userData.add(index, object); } /** * @return size of UserData list */ public int getUserDataSize() { return this.userData.size(); } /** * @return OpenH264 license message */ public String getLicenseMessage() { return licenseMessage; } /** * Set filename to storage for OpenH264 codec * @param name */ public void setNameLib(String name) { nameLib = name; } /** * @return filename of OpenH264 codec */ public String getNameLib() { return nameLib; } /** * @return path of the lib */ public String getFullPathLib() { return this.fileDirection + "/" + this.getNameLib(); } /** * Set name download file * @param name : must be the same name relative to the url */ public void setNameFileDownload(String name) { nameFileDownload = name; } /** * Set new url * @param url : must be a Cisco Url to OpenH264 and .bzip2 file */ public void setUrlDownload(String url) { urlDownload = url; } /** * Indicates whether the lib exists * Requirements : fileDirection and nameLib init * @return file exists ? */ public boolean isCodecFound() { return new File(fileDirection + "/" + nameLib).exists(); } /** * Try to download and load codec * Requirements : * fileDirection * nameFileDownload * urlDownload * nameLib * codecDownListener */ public void downloadCodec() { Thread thread = new Thread(new Runnable() { @Override public void run() { try { String path = fileDirection + "/" + nameLib; URL url = new URL(urlDownload); HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection(); urlConnection.connect(); Log.i("OpenH264Downloader", " "); InputStream inputStream = urlConnection.getInputStream(); FileOutputStream fileOutputStream = new FileOutputStream( fileDirection + "/" + nameFileDownload); int totalSize = urlConnection.getContentLength(); openH264DownloadHelperListener.OnProgress(0, totalSize); Log.i("OpenH264Downloader", " Download file:" + nameFileDownload); byte[] buffer = new byte[4096]; int bufferLength; int total = 0; while ((bufferLength = inputStream.read(buffer)) > 0) { total += bufferLength; fileOutputStream.write(buffer, 0, bufferLength); openH264DownloadHelperListener.OnProgress(total, totalSize); } fileOutputStream.close(); inputStream.close(); Log.i("OpenH264Downloader", " Uncompress file:" + nameFileDownload); FileInputStream in = new FileInputStream(fileDirection + "/" + nameFileDownload); FileOutputStream out = new FileOutputStream(path); BZip2CompressorInputStream bzIn = new BZip2CompressorInputStream(in); while ((bufferLength = bzIn.read(buffer)) > 0) { out.write(buffer, 0, bufferLength); } in.close(); out.close(); bzIn.close(); Log.i("OpenH264Downloader", " Remove file:" + nameFileDownload); new File(fileDirection + "/" + nameFileDownload).delete(); Log.i("OpenH264Downloader", " Loading plugin:" + path); System.load(path); openH264DownloadHelperListener.OnProgress(2, 1); } catch (FileNotFoundException e) { openH264DownloadHelperListener.OnError(e.getLocalizedMessage()); } catch (IOException e) { openH264DownloadHelperListener.OnError(e.getLocalizedMessage()); } } }); thread.start(); } }