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https://github.com/jellyfin/jellyfin.git
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Merge pull request #1838 from Unhelpful/media-attachments
Add support for embedded attachments in media files
This commit is contained in:
dkanada
281
MediaBrowser.MediaEncoding/Attachments/AttachmentExtractor.cs
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281
MediaBrowser.MediaEncoding/Attachments/AttachmentExtractor.cs
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@@ -0,0 +1,281 @@
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using System;
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using System.Diagnostics;
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using System.Collections.Concurrent;
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using System.Globalization;
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using System.IO;
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using System.Linq;
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using System.Threading;
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using System.Threading.Tasks;
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using MediaBrowser.Common.Configuration;
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using MediaBrowser.Common.Extensions;
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using MediaBrowser.Controller.Entities;
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using MediaBrowser.Controller.Library;
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using MediaBrowser.Controller.MediaEncoding;
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using MediaBrowser.Model.Dto;
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using MediaBrowser.Model.Entities;
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using MediaBrowser.Model.IO;
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using MediaBrowser.Model.MediaInfo;
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using Microsoft.Extensions.Logging;
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namespace MediaBrowser.MediaEncoding.Attachments
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{
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public class AttachmentExtractor : IAttachmentExtractor, IDisposable
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{
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private readonly ILogger _logger;
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private readonly IApplicationPaths _appPaths;
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private readonly IFileSystem _fileSystem;
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private readonly IMediaEncoder _mediaEncoder;
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private readonly IMediaSourceManager _mediaSourceManager;
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private readonly ConcurrentDictionary<string, SemaphoreSlim> _semaphoreLocks =
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new ConcurrentDictionary<string, SemaphoreSlim>();
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private bool _disposed = false;
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public AttachmentExtractor(
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ILogger<AttachmentExtractor> logger,
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IApplicationPaths appPaths,
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IFileSystem fileSystem,
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IMediaEncoder mediaEncoder,
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IMediaSourceManager mediaSourceManager)
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{
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_logger = logger;
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_appPaths = appPaths;
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_fileSystem = fileSystem;
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_mediaEncoder = mediaEncoder;
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_mediaSourceManager = mediaSourceManager;
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}
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/// <inheritdoc />
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public async Task<(MediaAttachment attachment, Stream stream)> GetAttachment(BaseItem item, string mediaSourceId, int attachmentStreamIndex, CancellationToken cancellationToken)
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{
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if (item == null)
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{
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throw new ArgumentNullException(nameof(item));
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}
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if (string.IsNullOrWhiteSpace(mediaSourceId))
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{
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throw new ArgumentNullException(nameof(mediaSourceId));
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}
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var mediaSources = await _mediaSourceManager.GetPlayackMediaSources(item, null, true, false, cancellationToken).ConfigureAwait(false);
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var mediaSource = mediaSources
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.FirstOrDefault(i => string.Equals(i.Id, mediaSourceId, StringComparison.OrdinalIgnoreCase));
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if (mediaSource == null)
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{
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throw new ResourceNotFoundException($"MediaSource {mediaSourceId} not found");
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}
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var mediaAttachment = mediaSource.MediaAttachments
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.FirstOrDefault(i => i.Index == attachmentStreamIndex);
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if (mediaAttachment == null)
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{
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throw new ResourceNotFoundException($"MediaSource {mediaSourceId} has no attachment with stream index {attachmentStreamIndex}");
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}
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var attachmentStream = await GetAttachmentStream(mediaSource, mediaAttachment, cancellationToken)
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.ConfigureAwait(false);
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return (mediaAttachment, attachmentStream);
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}
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private async Task<Stream> GetAttachmentStream(
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MediaSourceInfo mediaSource,
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MediaAttachment mediaAttachment,
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CancellationToken cancellationToken)
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{
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var attachmentPath = await GetReadableFile(mediaSource.Path, mediaSource.Path, mediaSource.Protocol, mediaAttachment, cancellationToken).ConfigureAwait(false);
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return File.OpenRead(attachmentPath);
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}
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private async Task<string> GetReadableFile(
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string mediaPath,
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string inputFile,
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MediaProtocol protocol,
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MediaAttachment mediaAttachment,
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CancellationToken cancellationToken)
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{
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var outputPath = GetAttachmentCachePath(mediaPath, protocol, mediaAttachment.Index);
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await ExtractAttachment(inputFile, protocol, mediaAttachment.Index, outputPath, cancellationToken)
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.ConfigureAwait(false);
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return outputPath;
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}
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private async Task ExtractAttachment(
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string inputFile,
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MediaProtocol protocol,
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int attachmentStreamIndex,
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string outputPath,
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CancellationToken cancellationToken)
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{
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var semaphore = _semaphoreLocks.GetOrAdd(outputPath, key => new SemaphoreSlim(1, 1));
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await semaphore.WaitAsync(cancellationToken).ConfigureAwait(false);
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try
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{
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if (!File.Exists(outputPath))
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{
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await ExtractAttachmentInternal(
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_mediaEncoder.GetInputArgument(new[] { inputFile }, protocol),
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attachmentStreamIndex,
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outputPath,
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cancellationToken).ConfigureAwait(false);
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}
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}
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finally
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{
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semaphore.Release();
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}
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}
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private async Task ExtractAttachmentInternal(
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string inputPath,
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int attachmentStreamIndex,
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string outputPath,
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CancellationToken cancellationToken)
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{
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if (string.IsNullOrEmpty(inputPath))
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{
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throw new ArgumentNullException(nameof(inputPath));
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}
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if (string.IsNullOrEmpty(outputPath))
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{
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throw new ArgumentNullException(nameof(outputPath));
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}
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Directory.CreateDirectory(Path.GetDirectoryName(outputPath));
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var processArgs = string.Format(
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CultureInfo.InvariantCulture,
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"-dump_attachment:{1} {2} -i {0} -t 0 -f null null",
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inputPath,
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attachmentStreamIndex,
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outputPath);
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var startInfo = new ProcessStartInfo
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{
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Arguments = processArgs,
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FileName = _mediaEncoder.EncoderPath,
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UseShellExecute = false,
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CreateNoWindow = true,
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WindowStyle = ProcessWindowStyle.Hidden,
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ErrorDialog = false
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};
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var process = new Process
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{
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StartInfo = startInfo
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};
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_logger.LogInformation("{File} {Arguments}", process.StartInfo.FileName, process.StartInfo.Arguments);
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process.Start();
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var processTcs = new TaskCompletionSource<bool>();
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process.EnableRaisingEvents = true;
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process.Exited += (sender, args) => processTcs.TrySetResult(true);
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var unregister = cancellationToken.Register(() => processTcs.TrySetResult(process.HasExited));
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var ranToCompletion = await processTcs.Task.ConfigureAwait(false);
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unregister.Dispose();
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if (!ranToCompletion)
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{
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try
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{
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_logger.LogWarning("Killing ffmpeg attachment extraction process");
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process.Kill();
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}
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catch (Exception ex)
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{
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_logger.LogError(ex, "Error killing attachment extraction process");
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}
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}
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var exitCode = ranToCompletion ? process.ExitCode : -1;
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process.Dispose();
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var failed = false;
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if (exitCode != 0)
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{
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failed = true;
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_logger.LogWarning("Deleting extracted attachment {Path} due to failure: {ExitCode}", outputPath, exitCode);
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try
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{
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if (File.Exists(outputPath))
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{
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_fileSystem.DeleteFile(outputPath);
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}
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}
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catch (IOException ex)
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{
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_logger.LogError(ex, "Error deleting extracted attachment {Path}", outputPath);
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}
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}
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else if (!File.Exists(outputPath))
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{
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failed = true;
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}
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if (failed)
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{
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var msg = $"ffmpeg attachment extraction failed for {inputPath} to {outputPath}";
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_logger.LogError(msg);
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throw new InvalidOperationException(msg);
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}
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else
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{
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_logger.LogInformation("ffmpeg attachment extraction completed for {Path} to {Path}", inputPath, outputPath);
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}
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}
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private string GetAttachmentCachePath(string mediaPath, MediaProtocol protocol, int attachmentStreamIndex)
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{
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string filename;
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if (protocol == MediaProtocol.File)
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{
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var date = _fileSystem.GetLastWriteTimeUtc(mediaPath);
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filename = (mediaPath + attachmentStreamIndex.ToString(CultureInfo.InvariantCulture) + "_" + date.Ticks.ToString(CultureInfo.InvariantCulture)).GetMD5().ToString("D");
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}
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else
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{
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filename = (mediaPath + attachmentStreamIndex.ToString(CultureInfo.InvariantCulture)).GetMD5().ToString("D");
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}
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var prefix = filename.Substring(0, 1);
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return Path.Combine(_appPaths.DataPath, "attachments", prefix, filename);
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}
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/// <inheritdoc />
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public void Dispose()
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{
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Dispose(true);
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GC.SuppressFinalize(this);
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}
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/// <summary>
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/// Releases unmanaged and - optionally - managed resources.
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/// </summary>
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/// <param name="disposing"><c>true</c> to release both managed and unmanaged resources; <c>false</c> to release only unmanaged resources.</param>
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protected virtual void Dispose(bool disposing)
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{
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if (_disposed)
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{
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return;
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}
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if (disposing)
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{
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}
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_disposed = true;
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}
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}
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}
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@@ -49,6 +49,10 @@ namespace MediaBrowser.MediaEncoding.Probing
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.Where(i => i.Type != MediaStreamType.Subtitle || !string.IsNullOrWhiteSpace(i.Codec))
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.ToList();
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info.MediaAttachments = internalStreams.Select(s => GetMediaAttachment(s))
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.Where(i => i != null)
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.ToList();
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if (data.format != null)
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{
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info.Container = NormalizeFormat(data.format.format_name);
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@@ -513,6 +517,39 @@ namespace MediaBrowser.MediaEncoding.Probing
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return codec;
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}
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/// <summary>
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/// Converts ffprobe stream info to our MediaAttachment class
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/// </summary>
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/// <param name="streamInfo">The stream info.</param>
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/// <returns>MediaAttachments.</returns>
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private MediaAttachment GetMediaAttachment(MediaStreamInfo streamInfo)
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{
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if (!string.Equals(streamInfo.codec_type, "attachment", StringComparison.OrdinalIgnoreCase))
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{
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return null;
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}
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var attachment = new MediaAttachment
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{
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Codec = streamInfo.codec_name,
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Index = streamInfo.index
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};
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if (!string.IsNullOrWhiteSpace(streamInfo.codec_tag_string))
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{
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attachment.CodecTag = streamInfo.codec_tag_string;
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}
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if (streamInfo.tags != null)
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{
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attachment.FileName = GetDictionaryValue(streamInfo.tags, "filename");
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attachment.MimeType = GetDictionaryValue(streamInfo.tags, "mimetype");
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attachment.Comment = GetDictionaryValue(streamInfo.tags, "comment");
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}
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return attachment;
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}
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/// <summary>
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/// Converts ffprobe stream info to our MediaStream class
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/// </summary>
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@@ -1,3 +0,0 @@
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<?xml version="1.0" encoding="utf-8"?>
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<packages>
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</packages>
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