Java tutorial
/* * Jajuk * Copyright (C) The Jajuk Team * http://jajuk.info * * 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 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * */ package org.jajuk.services.players; import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; import java.util.Map; import java.util.Properties; import java.util.StringTokenizer; import org.apache.commons.lang.StringUtils; import org.jajuk.base.File; import org.jajuk.events.JajukEvent; import org.jajuk.events.JajukEvents; import org.jajuk.events.ObservationManager; import org.jajuk.services.webradio.WebRadio; import org.jajuk.util.Conf; import org.jajuk.util.Const; import org.jajuk.util.UtilString; import org.jajuk.util.error.JajukException; import org.jajuk.util.log.Log; /** * Jajuk web radio player implementation based on Mplayer. */ public class WebRadioPlayerImpl extends AbstractMPlayerImpl { /** * Reader : read information from mplayer like position. */ private class ReaderThread extends Thread { /** * Implemented to set a useful thread name. */ public ReaderThread() { super("WebRadio Reader Thread"); } /* (non-Javadoc) * @see java.lang.Thread#run() */ @Override public void run() { try { BufferedReader in = new BufferedReader(new InputStreamReader(proc.getInputStream())); String line = null; for (;;) { line = in.readLine(); if (line == null) { break; } if (line.startsWith(("ICY Info:"))) { //Send an event that web radio info has been updated Properties pDetails = new Properties(); String radioTrackDetail = ""; // Some stations doesn't include the StreamUrl in the ICY line. Sample : //ICY Info: StreamTitle='-- Now On Air: URB Non-Stop :: Playing: xxx Cilmi - Sweet About Me :: Email the station xxx@yyy.uk --'; if (line.contains("';StreamUrl")) { radioTrackDetail = line.substring(line.indexOf("StreamTitle='") + 13, line.indexOf("';StreamUrl")); // Otherwise, the line should ends with ',' } else if (line.endsWith("';")) { radioTrackDetail = line.substring(line.indexOf("StreamTitle='") + 13, line.length() - 2); } else { // Just in case, we also handle the case where the line doesn't ends with '; radioTrackDetail = line.substring(line.indexOf("StreamTitle='") + 13, line.length() - 2); } String currentRadioTrack = QueueModel.getCurrentRadio().getName(); if (StringUtils.isNotEmpty(radioTrackDetail)) { currentRadioTrack += ":: " + radioTrackDetail; } pDetails.put(Const.DETAIL_CONTENT, QueueModel.getCurrentRadio()); pDetails.put(Const.CURRENT_RADIO_TRACK, currentRadioTrack); ObservationManager.notify(new JajukEvent(JajukEvents.WEBRADIO_INFO_UPDATED, pDetails)); } bOpening = false; // Search for Exiting (...) pattern if (line.matches(".*\\x2e\\x2e\\x2e.*\\(.*\\).*")) { bEOF = true; } } // can reach this point at the end of file in.close(); bEOF = true; return; } catch (Exception e) { Log.error(e); } } } /** * (non-Javadoc). * * @param radio * @param fVolume * * @throws IOException Signals that an I/O exception has occurred. * @throws JajukException the jajuk exception * * @see org.jajuk.players.IPlayerImpl#play(org.jajuk.base.File, float, long, * float) */ @Override public void play(WebRadio radio, float fVolume) throws IOException, JajukException { this.fVolume = fVolume; this.bOpening = true; this.bEOF = false; this.bitPerfect = Conf.getBoolean(Const.CONF_BIT_PERFECT); // Start ProcessBuilder pb = new ProcessBuilder(buildCommand(radio.getUrl(), 0)); Log.debug("Using this Mplayer command: {{" + pb.command() + "}}"); // Set all environment variables format: var1=xxx var2=yyy try { Map<String, String> env = pb.environment(); StringTokenizer st = new StringTokenizer(Conf.getString(Const.CONF_ENV_VARIABLES), " "); while (st.hasMoreTokens()) { StringTokenizer st2 = new StringTokenizer(st.nextToken(), "="); env.put(st2.nextToken(), st2.nextToken()); } // If needed, set proxy settings in format: // http_proxy=http://username:password@proxy.example.org:8080 if (Conf.getBoolean(Const.CONF_NETWORK_USE_PROXY)) { String sLogin = Conf.getString(Const.CONF_NETWORK_PROXY_LOGIN).trim(); String sHost = Conf.getString(Const.CONF_NETWORK_PROXY_HOSTNAME).trim(); int port = Conf.getInt(Const.CONF_NETWORK_PROXY_PORT); // Non anonymous proxy if (!StringUtils.isBlank(sLogin)) { String sPwd = UtilString.rot13(Conf.getString(Const.CONF_NETWORK_PROXY_PWD)); String sProxyConf = "http://" + sLogin + ':' + sPwd + '@' + sHost + ':' + port; env.put("http_proxy", sProxyConf); Log.debug("Using these proxy settings: " + sProxyConf); } // Anonymous proxy else { String sProxyConf = "http://" + sHost + ':' + port; env.put("http_proxy", sProxyConf); Log.debug("Using these proxy settings: " + sProxyConf); } } } catch (Exception e) { Log.error(e); } // Start mplayer proc = pb.start(); // start mplayer replies reader thread new ReaderThread().start(); // if opening, wait, 30 secs max int i = 0; while (bOpening && i < 30) { try { Thread.sleep(1000); i++; } catch (InterruptedException e) { Log.error(e); } } // If end of file already reached, it means that file cannot be read if (bEOF) { throw new JajukException(7); } // Get track length sendCommand("get_time_length"); } /* * (non-Javadoc) * * @see org.jajuk.players.AbstractMPlayerImpl#play(org.jajuk.base.File, float, * long, float) */ @Override public void play(File file, float position, long length, float volume) { // nothing to do here... } /* (non-Javadoc) * @see org.jajuk.services.players.IPlayerImpl#getActuallyPlayedTimeMillis() */ @Override public long getActuallyPlayedTimeMillis() { // makes no sense for webradios return 0; } }