My fork of airsonic with experimental fixes and improvements. See branch "custom"
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airsonic-custom/airsonic-main/src/main/java/org/airsonic/player/service/upnp/FolderBasedContentDirectory...

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/*
This file is part of Airsonic.
Airsonic 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.
Airsonic 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 Airsonic. If not, see <http://www.gnu.org/licenses/>.
Copyright 2016 (C) Airsonic Authors
Based upon Subsonic, Copyright 2009 (C) Sindre Mehus
*/
package org.airsonic.player.service.upnp;
import org.airsonic.player.domain.*;
import org.airsonic.player.service.MediaFileService;
import org.airsonic.player.service.PlaylistService;
import org.airsonic.player.util.Util;
import org.fourthline.cling.support.contentdirectory.ContentDirectoryErrorCode;
import org.fourthline.cling.support.contentdirectory.ContentDirectoryException;
import org.fourthline.cling.support.model.*;
import org.fourthline.cling.support.model.container.Container;
import org.fourthline.cling.support.model.container.MusicAlbum;
import org.fourthline.cling.support.model.container.PlaylistContainer;
import org.fourthline.cling.support.model.container.StorageFolder;
import org.fourthline.cling.support.model.item.Item;
import org.fourthline.cling.support.model.item.MusicTrack;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.web.util.UriComponentsBuilder;
import java.net.URI;
import java.util.Arrays;
import java.util.List;
/**
* @author Sindre Mehus
* @version $Id$
*/
@Service
public class FolderBasedContentDirectory extends CustomContentDirectory {
private static final Logger LOG = LoggerFactory.getLogger(FolderBasedContentDirectory.class);
private static final String CONTAINER_ID_PLAYLIST_ROOT = "playlists";
private static final String CONTAINER_ID_PLAYLIST_PREFIX = "playlist-";
private static final String CONTAINER_ID_FOLDER_PREFIX = "folder-";
@Autowired
private MediaFileService mediaFileService;
@Autowired
private PlaylistService playlistService;
@Override
public BrowseResult browse(String objectId, BrowseFlag browseFlag, String filter, long firstResult,
long maxResults, SortCriterion[] orderby) throws ContentDirectoryException {
LOG.info("UPnP request - objectId: " + objectId + ", browseFlag: " + browseFlag + ", filter: " + filter +
", firstResult: " + firstResult + ", maxResults: " + maxResults);
// maxResult == 0 means all.
if (maxResults == 0) {
maxResults = Integer.MAX_VALUE;
}
try {
if (CONTAINER_ID_ROOT.equals(objectId)) {
return browseFlag == BrowseFlag.METADATA ? browseRootMetadata() : browseRoot(firstResult, maxResults);
}
if (CONTAINER_ID_PLAYLIST_ROOT.equals(objectId)) {
return browseFlag == BrowseFlag.METADATA ? browsePlaylistRootMetadata() : browsePlaylistRoot(firstResult, maxResults);
}
if (objectId.startsWith(CONTAINER_ID_PLAYLIST_PREFIX)) {
int playlistId = Integer.parseInt(objectId.replace(CONTAINER_ID_PLAYLIST_PREFIX, ""));
Playlist playlist = playlistService.getPlaylist(playlistId);
return browseFlag == BrowseFlag.METADATA ? browsePlaylistMetadata(playlist) : browsePlaylist(playlist, firstResult, maxResults);
}
int mediaFileId = Integer.parseInt(objectId.replace(CONTAINER_ID_FOLDER_PREFIX, ""));
MediaFile mediaFile = mediaFileService.getMediaFile(mediaFileId);
return browseFlag == BrowseFlag.METADATA ? browseMediaFileMetadata(mediaFile) : browseMediaFile(mediaFile, firstResult, maxResults);
} catch (Throwable x) {
LOG.error("UPnP error: " + x, x);
throw new ContentDirectoryException(ContentDirectoryErrorCode.CANNOT_PROCESS, x.toString());
}
}
private BrowseResult browseRootMetadata() throws Exception {
StorageFolder root = new StorageFolder();
root.setId(CONTAINER_ID_ROOT);
root.setParentID("-1");
MediaLibraryStatistics statistics = settingsService.getMediaLibraryStatistics();
root.setStorageUsed(statistics == null ? 0 : statistics.getTotalLengthInBytes());
root.setTitle("Airsonic Media");
root.setRestricted(true);
root.setSearchable(false);
root.setWriteStatus(WriteStatus.NOT_WRITABLE);
List<MusicFolder> musicFolders = settingsService.getAllMusicFolders();
root.setChildCount(musicFolders.size() + 1); // +1 for playlists
DIDLContent didl = new DIDLContent();
didl.addContainer(root);
return createBrowseResult(didl, 1, 1);
}
private BrowseResult browsePlaylistRootMetadata() throws Exception {
DIDLContent didl = new DIDLContent();
didl.addContainer(createPlaylistRootContainer());
return createBrowseResult(didl, 1, 1);
}
private BrowseResult browsePlaylistRoot(long firstResult, long maxResults) throws Exception {
DIDLContent didl = new DIDLContent();
List<Playlist> allPlaylists = playlistService.getAllPlaylists();
List<Playlist> selectedPlaylists = Util.subList(allPlaylists, firstResult, maxResults);
for (Playlist playlist : selectedPlaylists) {
didl.addContainer(createPlaylistContainer(playlist));
}
return createBrowseResult(didl, selectedPlaylists.size(), allPlaylists.size());
}
private BrowseResult browsePlaylistMetadata(Playlist playlist) throws Exception {
DIDLContent didl = new DIDLContent();
didl.addContainer(createPlaylistContainer(playlist));
return createBrowseResult(didl, 1, 1);
}
private BrowseResult browsePlaylist(Playlist playlist, long firstResult, long maxResults) throws Exception {
List<MediaFile> allChildren = playlistService.getFilesInPlaylist(playlist.getId());
List<MediaFile> selectedChildren = Util.subList(allChildren, firstResult, maxResults);
DIDLContent didl = new DIDLContent();
for (MediaFile child : selectedChildren) {
addContainerOrItem(didl, child);
}
return createBrowseResult(didl, selectedChildren.size(), allChildren.size());
}
private BrowseResult browseRoot(long firstResult, long maxResults) throws Exception {
DIDLContent didl = new DIDLContent();
List<MusicFolder> allFolders = settingsService.getAllMusicFolders();
List<MusicFolder> selectedFolders = Util.subList(allFolders, firstResult, maxResults);
for (MusicFolder folder : selectedFolders) {
MediaFile mediaFile = mediaFileService.getMediaFile(folder.getPath());
addContainerOrItem(didl, mediaFile);
}
if (maxResults > selectedFolders.size()) {
didl.addContainer(createPlaylistRootContainer());
}
return createBrowseResult(didl, (int) didl.getCount(), allFolders.size() + 1);
}
private BrowseResult browseMediaFileMetadata(MediaFile mediaFile) throws Exception {
DIDLContent didl = new DIDLContent();
didl.addContainer(createContainer(mediaFile));
return createBrowseResult(didl, 1, 1);
}
private BrowseResult browseMediaFile(MediaFile mediaFile, long firstResult, long maxResults) throws Exception {
List<MediaFile> allChildren = mediaFileService.getChildrenOf(mediaFile, true, true, true);
List<MediaFile> selectedChildren = Util.subList(allChildren, firstResult, maxResults);
DIDLContent didl = new DIDLContent();
for (MediaFile child : selectedChildren) {
addContainerOrItem(didl, child);
}
return createBrowseResult(didl, selectedChildren.size(), allChildren.size());
}
private void addContainerOrItem(DIDLContent didl, MediaFile mediaFile) {
if (mediaFile.isFile()) {
didl.addItem(createItem(mediaFile));
} else {
didl.addContainer(createContainer(mediaFile));
}
}
private Item createItem(MediaFile song) {
MediaFile parent = mediaFileService.getParentOf(song);
MusicTrack item = new MusicTrack();
item.setId(String.valueOf(song.getId()));
item.setParentID(String.valueOf(parent.getId()));
item.setTitle(song.getTitle());
item.setAlbum(song.getAlbumName());
if (song.getArtist() != null) {
item.setArtists(new PersonWithRole[]{new PersonWithRole(song.getArtist())});
}
Integer year = song.getYear();
if (year != null) {
item.setDate(year + "-01-01");
}
item.setOriginalTrackNumber(song.getTrackNumber());
if (song.getGenre() != null) {
item.setGenres(new String[]{song.getGenre()});
}
item.setResources(Arrays.asList(createResourceForSong(song)));
item.setDescription(song.getComment());
item.addProperty(new DIDLObject.Property.UPNP.ALBUM_ART_URI(getAlbumArtUrl(parent)));
return item;
}
private Container createContainer(MediaFile mediaFile) {
Container container = mediaFile.isAlbum() ? createAlbumContainer(mediaFile) : new MusicAlbum();
container.setId(CONTAINER_ID_FOLDER_PREFIX + mediaFile.getId());
container.setTitle(mediaFile.getName());
List<MediaFile> children = mediaFileService.getChildrenOf(mediaFile, true, true, false);
container.setChildCount(children.size());
container.setParentID(CONTAINER_ID_ROOT);
if (!mediaFileService.isRoot(mediaFile)) {
MediaFile parent = mediaFileService.getParentOf(mediaFile);
if (parent != null) {
container.setParentID(String.valueOf(parent.getId()));
}
}
return container;
}
private Container createAlbumContainer(MediaFile album) {
MusicAlbum container = new MusicAlbum();
container.setAlbumArtURIs(new URI[]{getAlbumArtUrl(album)});
// TODO: correct artist?
if (album.getArtist() != null) {
container.setArtists(new PersonWithRole[]{new PersonWithRole(album.getArtist())});
}
container.setDescription(album.getComment());
return container;
}
private Container createPlaylistRootContainer() {
Container container = new StorageFolder();
container.setId(CONTAINER_ID_PLAYLIST_ROOT);
container.setTitle("Playlists");
List<Playlist> playlists = playlistService.getAllPlaylists();
container.setChildCount(playlists.size());
container.setParentID(CONTAINER_ID_ROOT);
return container;
}
private Container createPlaylistContainer(Playlist playlist) {
PlaylistContainer container = new PlaylistContainer();
container.setId(CONTAINER_ID_PLAYLIST_PREFIX + playlist.getId());
container.setParentID(CONTAINER_ID_PLAYLIST_ROOT);
container.setTitle(playlist.getName());
container.setDescription(playlist.getComment());
container.setChildCount(playlistService.getFilesInPlaylist(playlist.getId()).size());
return container;
}
private URI getAlbumArtUrl(MediaFile album) {
return jwtSecurityService.addJWTToken(UriComponentsBuilder.fromUriString(getBaseUrl() + "/ext/coverArt.view")
.queryParam("id", album.getId())
.queryParam("size", CoverArtScheme.LARGE.getSize()))
.build()
.encode()
.toUri();
}
public void setMediaFileService(MediaFileService mediaFileService) {
this.mediaFileService = mediaFileService;
}
public void setPlaylistService(PlaylistService playlistService) {
this.playlistService = playlistService;
}
}