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/*
This file is part of Subsonic.
Subsonic 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.
Subsonic 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 Subsonic. If not, see <http://www.gnu.org/licenses/>.
Copyright 2009 (C) Sindre Mehus
*/
package net.sourceforge.subsonic.service;
import net.sourceforge.subsonic.Logger;
import net.sourceforge.subsonic.domain.MediaFile;
import net.sourceforge.subsonic.domain.Player;
import net.sourceforge.subsonic.domain.PlayQueue;
import net.sourceforge.subsonic.domain.Transcoding;
import net.sourceforge.subsonic.domain.TransferStatus;
import net.sourceforge.subsonic.domain.User;
import net.sourceforge.subsonic.domain.VideoTranscodingSettings;
import net.sourceforge.subsonic.service.jukebox.AudioPlayer;
import net.sourceforge.subsonic.util.FileUtil;
import org.apache.commons.io.IOUtils;
import java.io.InputStream;
import static net.sourceforge.subsonic.service.jukebox.AudioPlayer.State.EOM;
/**
* Plays music on the local audio device.
*
* @author Sindre Mehus
*/
public class JukeboxService implements AudioPlayer.Listener {
private static final Logger LOG = Logger.getLogger(JukeboxService.class);
private AudioPlayer audioPlayer;
private TranscodingService transcodingService;
private AudioScrobblerService audioScrobblerService;
private StatusService statusService;
private SettingsService settingsService;
private SecurityService securityService;
private Player player;
private TransferStatus status;
private MediaFile currentPlayingFile;
private float gain = 0.5f;
private int offset;
private MediaFileService mediaFileService;
/**
* Updates the jukebox by starting or pausing playback on the local audio device.
*
* @param player The player in question.
* @param offset Start playing after this many seconds into the track.
*/
public synchronized void updateJukebox(Player player, int offset) throws Exception {
User user = securityService.getUserByName(player.getUsername());
if (!user.isJukeboxRole()) {
LOG.warn(user.getUsername() + " is not authorized for jukebox playback.");
return;
}
if (player.getPlayQueue().getStatus() == PlayQueue.Status.PLAYING) {
this.player = player;
MediaFile result;
synchronized (player.getPlayQueue()) {
result = player.getPlayQueue().getCurrentFile();
}
play(result, offset);
} else {
if (audioPlayer != null) {
audioPlayer.pause();
}
}
}
private synchronized void play(MediaFile file, int offset) {
InputStream in = null;
try {
// Resume if possible.
boolean sameFile = file != null && file.equals(currentPlayingFile);
boolean paused = audioPlayer != null && audioPlayer.getState() == AudioPlayer.State.PAUSED;
if (sameFile && paused && offset == 0) {
audioPlayer.play();
} else {
this.offset = offset;
if (audioPlayer != null) {
audioPlayer.close();
if (currentPlayingFile != null) {
onSongEnd(currentPlayingFile);
}
}
if (file != null) {
TranscodingService.Parameters parameters = new TranscodingService.Parameters(file, new VideoTranscodingSettings(0, 0, offset));
String command = settingsService.getJukeboxCommand();
parameters.setTranscoding(new Transcoding(null, null, null, null, command, null, null, false));
in = transcodingService.getTranscodedInputStream(parameters);
audioPlayer = new AudioPlayer(in, this);
audioPlayer.setGain(gain);
audioPlayer.play();
onSongStart(file);
}
}
currentPlayingFile = file;
} catch (Exception x) {
LOG.error("Error in jukebox: " + x, x);
IOUtils.closeQuietly(in);
}
}
public synchronized void stateChanged(AudioPlayer audioPlayer, AudioPlayer.State state) {
if (state == EOM) {
player.getPlayQueue().next();
MediaFile result;
synchronized (player.getPlayQueue()) {
result = player.getPlayQueue().getCurrentFile();
}
play(result, 0);
}
}
public synchronized float getGain() {
return gain;
}
public synchronized int getPosition() {
return audioPlayer == null ? 0 : offset + audioPlayer.getPosition();
}
/**
* Returns the player which currently uses the jukebox.
*
* @return The player, may be {@code null}.
*/
public Player getPlayer() {
return player;
}
private void onSongStart(MediaFile file) {
LOG.info(player.getUsername() + " starting jukebox for \"" + FileUtil.getShortPath(file.getFile()) + "\"");
status = statusService.createStreamStatus(player);
status.setFile(file.getFile());
status.addBytesTransfered(file.getFileSize());
mediaFileService.incrementPlayCount(file);
scrobble(file, false);
}
private void onSongEnd(MediaFile file) {
LOG.info(player.getUsername() + " stopping jukebox for \"" + FileUtil.getShortPath(file.getFile()) + "\"");
if (status != null) {
statusService.removeStreamStatus(status);
}
scrobble(file, true);
}
private void scrobble(MediaFile file, boolean submission) {
if (player.getClientId() == null) { // Don't scrobble REST players.
audioScrobblerService.register(file, player.getUsername(), submission);
}
}
public synchronized void setGain(float gain) {
this.gain = gain;
if (audioPlayer != null) {
audioPlayer.setGain(gain);
}
}
public void setTranscodingService(TranscodingService transcodingService) {
this.transcodingService = transcodingService;
}
public void setAudioScrobblerService(AudioScrobblerService audioScrobblerService) {
this.audioScrobblerService = audioScrobblerService;
}
public void setStatusService(StatusService statusService) {
this.statusService = statusService;
}
public void setSettingsService(SettingsService settingsService) {
this.settingsService = settingsService;
}
public void setSecurityService(SecurityService securityService) {
this.securityService = securityService;
}
public void setMediaFileService(MediaFileService mediaFileService) {
this.mediaFileService = mediaFileService;
}
}
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