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jellyfin/MediaBrowser.Providers/MediaInfo/MediaInfoResolver.cs

253 lines
11 KiB

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using Emby.Naming.Common;
using Emby.Naming.ExternalFiles;
using MediaBrowser.Controller.Entities;
using MediaBrowser.Controller.MediaEncoding;
using MediaBrowser.Controller.Providers;
using MediaBrowser.Model.Dlna;
using MediaBrowser.Model.Dto;
using MediaBrowser.Model.Entities;
using MediaBrowser.Model.Globalization;
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using MediaBrowser.Model.IO;
using MediaBrowser.Model.MediaInfo;
using Microsoft.Extensions.Logging;
namespace MediaBrowser.Providers.MediaInfo
{
/// <summary>
/// Resolves external files for <see cref="Video"/>.
/// </summary>
public abstract class MediaInfoResolver
{
/// <summary>
/// The <see cref="ExternalPathParser"/> instance.
/// </summary>
private readonly ExternalPathParser _externalPathParser;
/// <summary>
/// The <see cref="IMediaEncoder"/> instance.
/// </summary>
private readonly IMediaEncoder _mediaEncoder;
private readonly ILogger _logger;
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private readonly IFileSystem _fileSystem;
/// <summary>
/// The <see cref="NamingOptions"/> instance.
/// </summary>
private readonly NamingOptions _namingOptions;
/// <summary>
/// The <see cref="DlnaProfileType"/> of the files this resolver should resolve.
/// </summary>
private readonly DlnaProfileType _type;
/// <summary>
/// Initializes a new instance of the <see cref="MediaInfoResolver"/> class.
/// </summary>
/// <param name="logger">The logger.</param>
/// <param name="localizationManager">The localization manager.</param>
/// <param name="mediaEncoder">The media encoder.</param>
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/// <param name="fileSystem">The file system.</param>
/// <param name="namingOptions">The <see cref="NamingOptions"/> object containing FileExtensions, MediaDefaultFlags, MediaForcedFlags and MediaFlagDelimiters.</param>
/// <param name="type">The <see cref="DlnaProfileType"/> of the parsed file.</param>
protected MediaInfoResolver(
ILogger logger,
ILocalizationManager localizationManager,
IMediaEncoder mediaEncoder,
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IFileSystem fileSystem,
NamingOptions namingOptions,
DlnaProfileType type)
{
_logger = logger;
_mediaEncoder = mediaEncoder;
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_fileSystem = fileSystem;
_namingOptions = namingOptions;
_type = type;
_externalPathParser = new ExternalPathParser(namingOptions, localizationManager, _type);
}
/// <summary>
/// Retrieves the external streams for the provided video.
/// </summary>
/// <param name="video">The <see cref="Video"/> object to search external streams for.</param>
/// <param name="startIndex">The stream index to start adding external streams at.</param>
/// <param name="directoryService">The directory service to search for files.</param>
/// <param name="clearCache">True if the directory service cache should be cleared before searching.</param>
/// <param name="cancellationToken">The cancellation token.</param>
/// <returns>The external streams located.</returns>
public async Task<IReadOnlyList<MediaStream>> GetExternalStreamsAsync(
Video video,
int startIndex,
IDirectoryService directoryService,
bool clearCache,
CancellationToken cancellationToken)
{
if (!video.IsFileProtocol)
{
return Array.Empty<MediaStream>();
}
var pathInfos = GetExternalFiles(video, directoryService, clearCache);
if (!pathInfos.Any())
{
return Array.Empty<MediaStream>();
}
var mediaStreams = new List<MediaStream>();
foreach (var pathInfo in pathInfos)
{
if (!pathInfo.Path.AsSpan().EndsWith(".strm", StringComparison.OrdinalIgnoreCase))
{
try
{
var mediaInfo = await GetMediaInfo(pathInfo.Path, _type, cancellationToken).ConfigureAwait(false);
if (mediaInfo.MediaStreams.Count == 1)
{
MediaStream mediaStream = mediaInfo.MediaStreams[0];
if ((mediaStream.Type == MediaStreamType.Audio && _type == DlnaProfileType.Audio)
|| (mediaStream.Type == MediaStreamType.Subtitle && _type == DlnaProfileType.Subtitle))
{
mediaStream.Index = startIndex++;
mediaStream.IsDefault = pathInfo.IsDefault || mediaStream.IsDefault;
mediaStream.IsForced = pathInfo.IsForced || mediaStream.IsForced;
mediaStream.IsHearingImpaired = pathInfo.IsHearingImpaired || mediaStream.IsHearingImpaired;
mediaStreams.Add(MergeMetadata(mediaStream, pathInfo));
}
}
else
{
foreach (MediaStream mediaStream in mediaInfo.MediaStreams)
{
if ((mediaStream.Type == MediaStreamType.Audio && _type == DlnaProfileType.Audio)
|| (mediaStream.Type == MediaStreamType.Subtitle && _type == DlnaProfileType.Subtitle))
{
mediaStream.Index = startIndex++;
mediaStreams.Add(MergeMetadata(mediaStream, pathInfo));
}
}
}
}
catch (Exception ex)
{
_logger.LogError(ex, "Error getting external streams from {Path}", pathInfo.Path);
continue;
}
}
}
return mediaStreams.AsReadOnly();
}
/// <summary>
/// Returns the external file infos for the given video.
/// </summary>
/// <param name="video">The <see cref="Video"/> object to search external files for.</param>
/// <param name="directoryService">The directory service to search for files.</param>
/// <param name="clearCache">True if the directory service cache should be cleared before searching.</param>
/// <returns>The external file paths located.</returns>
public IReadOnlyList<ExternalPathParserResult> GetExternalFiles(
Video video,
IDirectoryService directoryService,
bool clearCache)
{
if (!video.IsFileProtocol)
{
return Array.Empty<ExternalPathParserResult>();
}
// Check if video folder exists
string folder = video.ContainingFolderPath;
if (!_fileSystem.DirectoryExists(folder))
{
return Array.Empty<ExternalPathParserResult>();
}
var files = directoryService.GetFilePaths(folder, clearCache, true).ToList();
files.Remove(video.Path);
var internalMetadataPath = video.GetInternalMetadataPath();
if (_fileSystem.DirectoryExists(internalMetadataPath))
{
files.AddRange(directoryService.GetFilePaths(internalMetadataPath, clearCache, true));
}
if (!files.Any())
{
return Array.Empty<ExternalPathParserResult>();
}
var externalPathInfos = new List<ExternalPathParserResult>();
ReadOnlySpan<char> prefix = video.FileNameWithoutExtension;
foreach (var file in files)
{
var fileNameWithoutExtension = Path.GetFileNameWithoutExtension(file.AsSpan());
if (fileNameWithoutExtension.Length >= prefix.Length
&& prefix.Equals(fileNameWithoutExtension[..prefix.Length], StringComparison.OrdinalIgnoreCase)
&& (fileNameWithoutExtension.Length == prefix.Length || _namingOptions.MediaFlagDelimiters.Contains(fileNameWithoutExtension[prefix.Length])))
{
var externalPathInfo = _externalPathParser.ParseFile(file, fileNameWithoutExtension[prefix.Length..].ToString());
if (externalPathInfo is not null)
{
externalPathInfos.Add(externalPathInfo);
}
}
}
return externalPathInfos;
}
/// <summary>
/// Returns the media info of the given file.
/// </summary>
/// <param name="path">The path to the file.</param>
/// <param name="type">The <see cref="DlnaProfileType"/>.</param>
/// <param name="cancellationToken">The cancellation token to cancel operation.</param>
/// <returns>The media info for the given file.</returns>
private Task<Model.MediaInfo.MediaInfo> GetMediaInfo(string path, DlnaProfileType type, CancellationToken cancellationToken)
{
cancellationToken.ThrowIfCancellationRequested();
return _mediaEncoder.GetMediaInfo(
new MediaInfoRequest
{
MediaType = type,
MediaSource = new MediaSourceInfo
{
Path = path,
Protocol = MediaProtocol.File
}
},
cancellationToken);
}
/// <summary>
/// Merges path metadata into stream metadata.
/// </summary>
/// <param name="mediaStream">The <see cref="MediaStream"/> object.</param>
/// <param name="pathInfo">The <see cref="ExternalPathParserResult"/> object.</param>
/// <returns>The modified mediaStream.</returns>
private MediaStream MergeMetadata(MediaStream mediaStream, ExternalPathParserResult pathInfo)
{
mediaStream.Path = pathInfo.Path;
mediaStream.IsExternal = true;
mediaStream.Title = string.IsNullOrEmpty(mediaStream.Title) ? (string.IsNullOrEmpty(pathInfo.Title) ? null : pathInfo.Title) : mediaStream.Title;
mediaStream.Language = string.IsNullOrEmpty(mediaStream.Language) ? (string.IsNullOrEmpty(pathInfo.Language) ? null : pathInfo.Language) : mediaStream.Language;
return mediaStream;
}
}
}