C# IHasImages类代码示例

        public async Task<IEnumerable<RemoteImageInfo>> GetImages(IHasImages item, CancellationToken cancellationToken)
        {
            if (TvdbSeriesProvider.IsValidSeries(item.ProviderIds))
            {
                var language = item.GetPreferredMetadataLanguage();

                var seriesDataPath = await TvdbSeriesProvider.Current.EnsureSeriesInfo(item.ProviderIds, language, cancellationToken).ConfigureAwait(false);

                var path = Path.Combine(seriesDataPath, "banners.xml");

                try
                {
                    var seriesOffset = TvdbSeriesProvider.GetSeriesOffset(item.ProviderIds);
                    if (seriesOffset != null && seriesOffset.Value != 0)
                        return TvdbSeasonImageProvider.GetImages(path, language, seriesOffset.Value + 1, cancellationToken);
                    
                    return GetImages(path, language, cancellationToken);
                }
                catch (FileNotFoundException)
                {
                    // No tvdb data yet. Don't blow up
                }
                catch (DirectoryNotFoundException)
                {
                    // No tvdb data yet. Don't blow up
                }
            }

            return new RemoteImageInfo[] { };
        }

        public bool Supports(IHasImages item)
        {
            // Save the http requests since we know it's not currently supported
            // TODO: Check again periodically
            if (item is Person)
            {
                return false;
            }

            // Save the http requests since we know it's not currently supported
            if (item is Series || item is Season || item is Episode)
            {
                return false;
            }

            var channelItem = item as IChannelMediaItem;

            if (channelItem != null)
            {
                if (channelItem.ContentType == ChannelMediaContentType.Movie)
                {
                    return true;
                }
                if (channelItem.ContentType == ChannelMediaContentType.MovieExtra)
                {
                    if (channelItem.ExtraType == ExtraType.Trailer)
                    {
                        return true;
                    }
                }
            }

            return item is Movie;
        }

        public Task<IEnumerable<RemoteImageInfo>> GetAllImages(IHasImages item, CancellationToken cancellationToken)
        {
            var season = (Season)item;

            var seriesId = season.Series != null ? season.Series.GetProviderId(MetadataProviders.Tvdb) : null;

            if (!string.IsNullOrEmpty(seriesId) && season.IndexNumber.HasValue)
            {
                // Process images
                var seriesDataPath = TvdbSeriesProvider.GetSeriesDataPath(_config.ApplicationPaths, seriesId);

                var path = Path.Combine(seriesDataPath, "banners.xml");

                try
                {
                    var result = GetImages(path, season.IndexNumber.Value, cancellationToken);

                    return Task.FromResult(result);
                }
                catch (FileNotFoundException)
                {
                    // No tvdb data yet. Don't blow up
                }
            }

            return Task.FromResult<IEnumerable<RemoteImageInfo>>(new RemoteImageInfo[] { });
        }

        public Task<IEnumerable<RemoteImageInfo>> GetAllImages(IHasImages item, CancellationToken cancellationToken)
        {
            var list = new List<RemoteImageInfo>();

            RemoteImageInfo info = null;

            var album = item as MusicAlbum;
            if (album != null)
            {
                info = GetInfo(album.LastFmImageUrl, album.LastFmImageSize);
            }

            var musicArtist = item as MusicArtist;
            if (musicArtist != null)
            {
                info = GetInfo(musicArtist.LastFmImageUrl, musicArtist.LastFmImageSize);
            }

            if (info != null)
            {
                list.Add(info);
            }

            // The only info we have is size
            return Task.FromResult<IEnumerable<RemoteImageInfo>>(list.OrderByDescending(i => i.Width ?? 0));
        }

 public IEnumerable<ImageType> GetSupportedImages(IHasImages item)
 {
     return new List<ImageType>
     {
         ImageType.Primary
     };
 }

        public List<LocalImageInfo> GetImages(IHasImages item, IDirectoryService directoryService)
        {
            var parentPath = Path.GetDirectoryName(item.Path);

            var parentPathFiles = directoryService.GetFileSystemEntries(parentPath)
                .ToList();

            var nameWithoutExtension = _fileSystem.GetFileNameWithoutExtension(item.Path);

            var files = GetFilesFromParentFolder(nameWithoutExtension, parentPathFiles);

            if (files.Count > 0)
            {
                return files;
            }

            var metadataPath = Path.Combine(parentPath, "metadata");

            if (parentPathFiles.Any(i => string.Equals(i.FullName, metadataPath, StringComparison.OrdinalIgnoreCase)))
            {
                return GetFilesFromParentFolder(nameWithoutExtension, directoryService.GetFiles(metadataPath));
            }

            return new List<LocalImageInfo>();
        }

        public async Task<DynamicImageResponse> GetImage(IHasImages item, ImageType type, CancellationToken cancellationToken)
        {
            var channelItem = (IChannelItem)item;

            var imageResponse = new DynamicImageResponse();

            if (!string.IsNullOrEmpty(channelItem.OriginalImageUrl))
            {
                var options = new HttpRequestOptions
                {
                    CancellationToken = cancellationToken,
                    Url = channelItem.OriginalImageUrl
                };

                var response = await _httpClient.GetResponse(options).ConfigureAwait(false);

                if (response.ContentType.StartsWith("image/", StringComparison.OrdinalIgnoreCase))
                {
                    imageResponse.HasImage = true;
                    imageResponse.Stream = response.Content;
                    imageResponse.SetFormatFromMimeType(response.ContentType);
                }
                else
                {
                    _logger.Error("Provider did not return an image content type.");
                }
            }

            return imageResponse;
        }

        public bool Supports(IHasImages item)
        {
            //var channelItem = item as IChannelMediaItem;

            //if (channelItem != null)
            //{
            //    if (channelItem.ContentType == ChannelMediaContentType.Movie)
            //    {
            //        return true;
            //    }
            //    if (channelItem.ContentType == ChannelMediaContentType.MovieExtra)
            //    {
            //        if (channelItem.ExtraType == ExtraType.Trailer)
            //        {
            //            return true;
            //        }
            //    }
            //}

            // Supports images for tv movies
            //var tvProgram = item as LiveTvProgram;
            //if (tvProgram != null && tvProgram.IsMovie)
            //{
            //    return true;
            //}
            
            return item is Movie || item is BoxSet || item is MusicVideo;
        }

        public async Task<IEnumerable<RemoteImageInfo>> GetImages(IHasImages item, CancellationToken cancellationToken)
        {
            var season = (Season)item;
            var series = season.Series;

            if (series != null && season.IndexNumber.HasValue && TvdbSeriesProvider.IsValidSeries(series.ProviderIds))
            {
                var seriesProviderIds = series.ProviderIds;
                var seasonNumber = season.IndexNumber.Value;

                var seriesDataPath = await TvdbSeriesProvider.Current.EnsureSeriesInfo(seriesProviderIds, series.GetPreferredMetadataLanguage(), cancellationToken).ConfigureAwait(false);

                if (!string.IsNullOrWhiteSpace(seriesDataPath))
                {
                    var path = Path.Combine(seriesDataPath, "banners.xml");

                    try
                    {
                        return GetImages(path, item.GetPreferredMetadataLanguage(), seasonNumber, cancellationToken);
                    }
                    catch (FileNotFoundException)
                    {
                        // No tvdb data yet. Don't blow up
                    }
                    catch (DirectoryNotFoundException)
                    {
                        // No tvdb data yet. Don't blow up
                    }
                }
            }

            return new RemoteImageInfo[] { };
        }

        public bool Supports(IHasImages item)
        {
            if (item is Photo)
            {
                return false;
            }

            if (!item.IsSaveLocalMetadataEnabled())
            {
                return true;
            }

            // Extracted images will be saved in here
            if (item is Audio)
            {
                return true;
            }

            if (item.SupportsLocalMetadata && !item.AlwaysScanInternalMetadataPath)
            {
                return false;
            }

            return true;
        }

        public async Task<IEnumerable<RemoteImageInfo>> GetImages(IHasImages item, CancellationToken cancellationToken)
        {
            var season = (Season)item;
            var series = season.Series;

            var identity = season.Identities.OfType<SeasonIdentity>().FirstOrDefault(id => id.Type == MetadataProviders.Tvdb.ToString());
            var seriesId = identity != null ? identity.SeriesId : null;

            if (!string.IsNullOrEmpty(seriesId) && season.IndexNumber.HasValue)
            {
                await TvdbSeriesProvider.Current.EnsureSeriesInfo(seriesId, series.GetPreferredMetadataLanguage(), cancellationToken).ConfigureAwait(false);

                // Process images
                var seriesDataPath = TvdbSeriesProvider.GetSeriesDataPath(_config.ApplicationPaths, seriesId);

                var path = Path.Combine(seriesDataPath, "banners.xml");

                try
                {
                    int seasonNumber = AdjustForSeriesOffset(series, identity.SeasonIndex);
                    return GetImages(path, item.GetPreferredMetadataLanguage(), seasonNumber, cancellationToken);
                }
                catch (FileNotFoundException)
                {
                    // No tvdb data yet. Don't blow up
                }
            }

            return new RemoteImageInfo[] { };
        }

        public async Task<IEnumerable<RemoteImageInfo>> GetImages(IHasImages item, CancellationToken cancellationToken)
        {
            var album = (MusicAlbum)item;

            var list = new List<RemoteImageInfo>();

            var artistMusicBrainzId = album.MusicArtist.GetProviderId(MetadataProviders.MusicBrainzArtist);

            if (!string.IsNullOrEmpty(artistMusicBrainzId))
            {
                await FanartArtistProvider.Current.EnsureArtistXml(artistMusicBrainzId, cancellationToken).ConfigureAwait(false);

                var artistXmlPath = FanartArtistProvider.GetArtistXmlPath(_config.CommonApplicationPaths, artistMusicBrainzId);

                var musicBrainzReleaseGroupId = album.GetProviderId(MetadataProviders.MusicBrainzReleaseGroup);

                var musicBrainzId = album.GetProviderId(MetadataProviders.MusicBrainzAlbum);

                try
                {
                    AddImages(list, artistXmlPath, musicBrainzId, musicBrainzReleaseGroupId, cancellationToken);
                }
                catch (FileNotFoundException)
                {

                }
                catch (DirectoryNotFoundException)
                {

                }
            }

            var language = item.GetPreferredMetadataLanguage();

            var isLanguageEn = string.Equals(language, "en", StringComparison.OrdinalIgnoreCase);

            // Sort first by width to prioritize HD versions
            return list.OrderByDescending(i => i.Width ?? 0)
                .ThenByDescending(i =>
                {
                    if (string.Equals(language, i.Language, StringComparison.OrdinalIgnoreCase))
                    {
                        return 3;
                    }
                    if (!isLanguageEn)
                    {
                        if (string.Equals("en", i.Language, StringComparison.OrdinalIgnoreCase))
                        {
                            return 2;
                        }
                    }
                    if (string.IsNullOrEmpty(i.Language))
                    {
                        return isLanguageEn ? 3 : 2;
                    }
                    return 0;
                })
                .ThenByDescending(i => i.CommunityRating ?? 0)
                .ThenByDescending(i => i.VoteCount ?? 0);
        }

        public bool Supports(IHasImages item)
        {
            if (item.SupportsLocalMetadata)
            {
                // Episode has it's own provider
                if (item.IsOwnedItem || item is Episode || item is Audio || item is Photo)
                {
                    return false;
                }

                return true;
            }

            if (item.LocationType == LocationType.Virtual)
            {
                var season = item as Season;

                if (season != null)
                {
                    var series = season.Series;

                    if (series != null && series.LocationType == LocationType.FileSystem)
                    {
                        return true;
                    }
                }
            }

            return false;
        }

        public async Task<IEnumerable<RemoteImageInfo>> GetImages(IHasImages item, CancellationToken cancellationToken)
        {
            var series = (Series)item;
            var seriesId = series.GetProviderId(MetadataProviders.Tvdb);

            if (!string.IsNullOrEmpty(seriesId))
            {
                var language = item.GetPreferredMetadataLanguage();

                await TvdbSeriesProvider.Current.EnsureSeriesInfo(seriesId, language, cancellationToken).ConfigureAwait(false);

                // Process images
                var seriesDataPath = TvdbSeriesProvider.GetSeriesDataPath(_config.ApplicationPaths, seriesId);

                var path = Path.Combine(seriesDataPath, "banners.xml");

                try
                {
                    return GetImages(path, language, cancellationToken);
                }
                catch (FileNotFoundException)
                {
                    // No tvdb data yet. Don't blow up
                }
            }

            return new RemoteImageInfo[] { };
        }

        private async Task<IEnumerable<RemoteImageInfo>> GetImages(IHasImages item, bool posters, bool thumbs, CancellationToken cancellationToken)
        {
            var list = new List<RemoteImageInfo>();

            if (posters)
            {
                var posterPath = Path.Combine(_config.ApplicationPaths.CachePath, "imagesbyname", "remotestudioposters.txt");

                await EnsurePosterList(posterPath, cancellationToken).ConfigureAwait(false);

                list.Add(GetImage(item, posterPath, ImageType.Primary, "folder"));
            }

            cancellationToken.ThrowIfCancellationRequested();

            if (thumbs)
            {
                var thumbsPath = Path.Combine(_config.ApplicationPaths.CachePath, "imagesbyname", "remotestudiothumbs.txt");

                await EnsureThumbsList(thumbsPath, cancellationToken).ConfigureAwait(false);

                list.Add(GetImage(item, thumbsPath, ImageType.Thumb, "thumb"));
            }

            return list.Where(i => i != null);
        }