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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.io;
import net.sourceforge.subsonic.Logger;
import net.sourceforge.subsonic.domain.MediaFile;
import net.sourceforge.subsonic.domain.VideoTranscodingSettings;
import net.sourceforge.subsonic.service.MediaFileService;
import net.sourceforge.subsonic.service.SearchService;
import net.sourceforge.subsonic.util.FileUtil;
import net.sourceforge.subsonic.domain.Player;
import net.sourceforge.subsonic.domain.PlayQueue;
import net.sourceforge.subsonic.domain.TransferStatus;
import net.sourceforge.subsonic.service.AudioScrobblerService;
import net.sourceforge.subsonic.service.TranscodingService;
import java.io.IOException;
import java.io.InputStream;
import java.util.List;
/**
* Implementation of {@link InputStream} which reads from a {@link net.sourceforge.subsonic.domain.PlayQueue}.
*
* @author Sindre Mehus
*/
public class PlayQueueInputStream extends InputStream {
private static final Logger LOG = Logger.getLogger(PlayQueueInputStream.class);
private final Player player;
private final TransferStatus status;
private final Integer maxBitRate;
private final String preferredTargetFormat;
private final VideoTranscodingSettings videoTranscodingSettings;
private final TranscodingService transcodingService;
private final AudioScrobblerService audioScrobblerService;
private final MediaFileService mediaFileService;
private MediaFile currentFile;
private InputStream currentInputStream;
private SearchService searchService;
public PlayQueueInputStream(Player player, TransferStatus status, Integer maxBitRate, String preferredTargetFormat,
VideoTranscodingSettings videoTranscodingSettings, TranscodingService transcodingService,
AudioScrobblerService audioScrobblerService, MediaFileService mediaFileService, SearchService searchService) {
this.player = player;
this.status = status;
this.maxBitRate = maxBitRate;
this.preferredTargetFormat = preferredTargetFormat;
this.videoTranscodingSettings = videoTranscodingSettings;
this.transcodingService = transcodingService;
this.audioScrobblerService = audioScrobblerService;
this.mediaFileService = mediaFileService;
this.searchService = searchService;
}
@Override
public int read() throws IOException {
byte[] b = new byte[1];
int n = read(b);
return n == -1 ? -1 : b[0];
}
@Override
public int read(byte[] b) throws IOException {
return read(b, 0, b.length);
}
@Override
public int read(byte[] b, int off, int len) throws IOException {
prepare();
if (currentInputStream == null || player.getPlayQueue().getStatus() == PlayQueue.Status.STOPPED) {
return -1;
}
int n = currentInputStream.read(b, off, len);
// If end of song reached, skip to next song and call read() again.
if (n == -1) {
player.getPlayQueue().next();
close();
return read(b, off, len);
} else {
status.addBytesTransfered(n);
}
return n;
}
private void prepare() throws IOException {
PlayQueue playQueue = player.getPlayQueue();
// If playlist is in auto-random mode, populate it with new random songs.
if (playQueue.getIndex() == -1 && playQueue.getRandomSearchCriteria() != null) {
populateRandomPlaylist(playQueue);
}
MediaFile result;
synchronized (playQueue) {
result = playQueue.getCurrentFile();
}
MediaFile file = result;
if (file == null) {
close();
} else if (!file.equals(currentFile)) {
close();
LOG.info(player.getUsername() + " listening to \"" + FileUtil.getShortPath(file.getFile()) + "\"");
mediaFileService.incrementPlayCount(file);
if (player.getClientId() == null) { // Don't scrobble REST players.
audioScrobblerService.register(file, player.getUsername(), false);
}
TranscodingService.Parameters parameters = transcodingService.getParameters(file, player, maxBitRate, preferredTargetFormat, videoTranscodingSettings);
currentInputStream = transcodingService.getTranscodedInputStream(parameters);
currentFile = file;
status.setFile(currentFile.getFile());
}
}
private void populateRandomPlaylist(PlayQueue playQueue) throws IOException {
List<MediaFile> files = searchService.getRandomSongs(playQueue.getRandomSearchCriteria());
playQueue.addFiles(false, files);
LOG.info("Recreated random playlist with " + playQueue.size() + " songs.");
}
@Override
public void close() throws IOException {
try {
if (currentInputStream != null) {
currentInputStream.close();
}
} finally {
if (player.getClientId() == null) { // Don't scrobble REST players.
audioScrobblerService.register(currentFile, player.getUsername(), true);
}
currentInputStream = null;
currentFile = null;
}
}
}
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