1216 lines
46 KiB
C#
1216 lines
46 KiB
C#
using MediaBrowser.Common.Extensions;
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using MediaBrowser.Common.IO;
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using MediaBrowser.Controller.Configuration;
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using MediaBrowser.Controller.Dto;
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using MediaBrowser.Controller.Entities;
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using MediaBrowser.Controller.Library;
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using MediaBrowser.Controller.LiveTv;
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using MediaBrowser.Controller.MediaInfo;
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using MediaBrowser.Controller.Persistence;
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using MediaBrowser.Model.Configuration;
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using MediaBrowser.Model.Drawing;
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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.LiveTv;
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using System;
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using System.Collections.Generic;
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using System.Diagnostics;
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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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namespace MediaBrowser.Api.Playback
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{
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/// <summary>
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/// Class BaseStreamingService
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/// </summary>
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public abstract class BaseStreamingService : BaseApiService
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{
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/// <summary>
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/// Gets or sets the application paths.
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/// </summary>
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/// <value>The application paths.</value>
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protected IServerConfigurationManager ServerConfigurationManager { get; private set; }
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/// <summary>
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/// Gets or sets the user manager.
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/// </summary>
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/// <value>The user manager.</value>
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protected IUserManager UserManager { get; private set; }
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/// <summary>
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/// Gets or sets the library manager.
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/// </summary>
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/// <value>The library manager.</value>
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protected ILibraryManager LibraryManager { get; private set; }
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/// <summary>
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/// Gets or sets the iso manager.
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/// </summary>
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/// <value>The iso manager.</value>
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protected IIsoManager IsoManager { get; private set; }
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/// <summary>
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/// Gets or sets the media encoder.
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/// </summary>
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/// <value>The media encoder.</value>
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protected IMediaEncoder MediaEncoder { get; private set; }
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protected IDtoService DtoService { get; private set; }
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protected IFileSystem FileSystem { get; private set; }
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protected IItemRepository ItemRepository { get; private set; }
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protected ILiveTvManager LiveTvManager { get; private set; }
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/// <summary>
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/// Initializes a new instance of the <see cref="BaseStreamingService" /> class.
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/// </summary>
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/// <param name="serverConfig">The server configuration.</param>
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/// <param name="userManager">The user manager.</param>
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/// <param name="libraryManager">The library manager.</param>
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/// <param name="isoManager">The iso manager.</param>
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/// <param name="mediaEncoder">The media encoder.</param>
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/// <param name="dtoService">The dto service.</param>
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/// <param name="fileSystem">The file system.</param>
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/// <param name="itemRepository">The item repository.</param>
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protected BaseStreamingService(IServerConfigurationManager serverConfig, IUserManager userManager, ILibraryManager libraryManager, IIsoManager isoManager, IMediaEncoder mediaEncoder, IDtoService dtoService, IFileSystem fileSystem, IItemRepository itemRepository, ILiveTvManager liveTvManager)
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{
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LiveTvManager = liveTvManager;
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ItemRepository = itemRepository;
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FileSystem = fileSystem;
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DtoService = dtoService;
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ServerConfigurationManager = serverConfig;
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UserManager = userManager;
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LibraryManager = libraryManager;
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IsoManager = isoManager;
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MediaEncoder = mediaEncoder;
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}
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/// <summary>
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/// Gets the command line arguments.
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/// </summary>
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/// <param name="outputPath">The output path.</param>
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/// <param name="state">The state.</param>
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/// <param name="performSubtitleConversions">if set to <c>true</c> [perform subtitle conversions].</param>
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/// <returns>System.String.</returns>
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protected abstract string GetCommandLineArguments(string outputPath, StreamState state, bool performSubtitleConversions);
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/// <summary>
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/// Gets the type of the transcoding job.
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/// </summary>
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/// <value>The type of the transcoding job.</value>
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protected abstract TranscodingJobType TranscodingJobType { get; }
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/// <summary>
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/// Gets the output file extension.
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/// </summary>
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/// <param name="state">The state.</param>
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/// <returns>System.String.</returns>
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protected virtual string GetOutputFileExtension(StreamState state)
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{
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return Path.GetExtension(state.RequestedUrl);
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}
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/// <summary>
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/// Gets the output file path.
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/// </summary>
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/// <param name="state">The state.</param>
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/// <returns>System.String.</returns>
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protected virtual string GetOutputFilePath(StreamState state)
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{
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var folder = ServerConfigurationManager.ApplicationPaths.TranscodingTempPath;
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var outputFileExtension = GetOutputFileExtension(state);
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return Path.Combine(folder, GetCommandLineArguments("dummy\\dummy", state, false).GetMD5() + (outputFileExtension ?? string.Empty).ToLower());
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}
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protected readonly CultureInfo UsCulture = new CultureInfo("en-US");
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/// <summary>
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/// The fast seek offset seconds
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/// </summary>
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private const int FastSeekOffsetSeconds = 1;
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/// <summary>
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/// Gets the fast seek command line parameter.
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/// </summary>
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/// <param name="request">The request.</param>
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/// <returns>System.String.</returns>
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/// <value>The fast seek command line parameter.</value>
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protected string GetFastSeekCommandLineParameter(StreamRequest request)
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{
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var time = request.StartTimeTicks;
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if (time.HasValue)
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{
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var seconds = TimeSpan.FromTicks(time.Value).TotalSeconds - FastSeekOffsetSeconds;
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if (seconds > 0)
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{
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return string.Format("-ss {0}", seconds.ToString(UsCulture));
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}
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}
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return string.Empty;
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}
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/// <summary>
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/// Gets the slow seek command line parameter.
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/// </summary>
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/// <param name="request">The request.</param>
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/// <returns>System.String.</returns>
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/// <value>The slow seek command line parameter.</value>
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protected string GetSlowSeekCommandLineParameter(StreamRequest request)
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{
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var time = request.StartTimeTicks;
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if (time.HasValue)
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{
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if (TimeSpan.FromTicks(time.Value).TotalSeconds - FastSeekOffsetSeconds > 0)
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{
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return string.Format(" -ss {0}", FastSeekOffsetSeconds.ToString(UsCulture));
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}
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}
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return string.Empty;
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}
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/// <summary>
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/// Gets the map args.
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/// </summary>
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/// <param name="state">The state.</param>
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/// <returns>System.String.</returns>
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protected virtual string GetMapArgs(StreamState state)
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{
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var args = string.Empty;
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if (state.IsRemote || !state.HasMediaStreams)
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{
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return string.Empty;
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}
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if (state.VideoStream != null)
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{
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args += string.Format("-map 0:{0}", state.VideoStream.Index);
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}
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else
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{
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args += "-map -0:v";
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}
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if (state.AudioStream != null)
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{
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args += string.Format(" -map 0:{0}", state.AudioStream.Index);
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}
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else
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{
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args += " -map -0:a";
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}
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if (state.SubtitleStream == null)
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{
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args += " -map -0:s";
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}
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return args;
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}
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/// <summary>
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/// Determines which stream will be used for playback
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/// </summary>
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/// <param name="allStream">All stream.</param>
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/// <param name="desiredIndex">Index of the desired.</param>
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/// <param name="type">The type.</param>
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/// <param name="returnFirstIfNoIndex">if set to <c>true</c> [return first if no index].</param>
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/// <returns>MediaStream.</returns>
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private MediaStream GetMediaStream(IEnumerable<MediaStream> allStream, int? desiredIndex, MediaStreamType type, bool returnFirstIfNoIndex = true)
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{
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var streams = allStream.Where(s => s.Type == type).OrderBy(i => i.Index).ToList();
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if (desiredIndex.HasValue)
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{
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var stream = streams.FirstOrDefault(s => s.Index == desiredIndex.Value);
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if (stream != null)
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{
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return stream;
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}
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}
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if (returnFirstIfNoIndex && type == MediaStreamType.Audio)
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{
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return streams.FirstOrDefault(i => i.Channels.HasValue && i.Channels.Value > 0) ??
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streams.FirstOrDefault();
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}
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// Just return the first one
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return returnFirstIfNoIndex ? streams.FirstOrDefault() : null;
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}
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protected EncodingQuality GetQualitySetting()
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{
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var quality = ServerConfigurationManager.Configuration.MediaEncodingQuality;
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if (quality == EncodingQuality.Auto)
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{
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var cpuCount = Environment.ProcessorCount;
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if (cpuCount >= 4)
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{
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return EncodingQuality.HighQuality;
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}
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return EncodingQuality.HighSpeed;
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}
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return quality;
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}
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/// <summary>
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/// Gets the number of threads.
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/// </summary>
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/// <returns>System.Int32.</returns>
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/// <exception cref="System.Exception">Unrecognized MediaEncodingQuality value.</exception>
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protected int GetNumberOfThreads(bool isWebm)
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{
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// Webm: http://www.webmproject.org/docs/encoder-parameters/
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// The decoder will usually automatically use an appropriate number of threads according to how many cores are available but it can only use multiple threads
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// for the coefficient data if the encoder selected --token-parts > 0 at encode time.
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switch (GetQualitySetting())
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{
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case EncodingQuality.HighSpeed:
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return 2;
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case EncodingQuality.HighQuality:
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return 2;
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case EncodingQuality.MaxQuality:
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return isWebm ? 2 : 0;
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default:
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throw new Exception("Unrecognized MediaEncodingQuality value.");
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}
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}
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/// <summary>
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/// Gets the video bitrate to specify on the command line
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/// </summary>
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/// <param name="state">The state.</param>
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/// <param name="videoCodec">The video codec.</param>
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/// <returns>System.String.</returns>
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protected string GetVideoQualityParam(StreamState state, string videoCodec)
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{
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// webm
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if (videoCodec.Equals("libvpx", StringComparison.OrdinalIgnoreCase))
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{
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// http://www.webmproject.org/docs/encoder-parameters/
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return "-speed 16 -quality good -profile:v 0 -slices 8";
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}
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// asf/wmv
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if (videoCodec.Equals("wmv2", StringComparison.OrdinalIgnoreCase))
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{
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return "-g 100 -qmax 15";
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}
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if (videoCodec.Equals("libx264", StringComparison.OrdinalIgnoreCase))
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{
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switch (GetQualitySetting())
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{
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case EncodingQuality.HighSpeed:
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return "-preset ultrafast";
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case EncodingQuality.HighQuality:
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return "-preset superfast";
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case EncodingQuality.MaxQuality:
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return "-preset superfast";
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default:
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throw new Exception("Unrecognized MediaEncodingQuality value.");
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}
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}
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if (videoCodec.Equals("mpeg4", StringComparison.OrdinalIgnoreCase))
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{
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return "-mbd rd -flags +mv4+aic -trellis 2 -cmp 2 -subcmp 2 -bf 2";
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}
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return string.Empty;
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}
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protected string GetAudioFilterParam(StreamState state, bool isHls)
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{
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var volParam = string.Empty;
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var audioSampleRate = string.Empty;
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var channels = GetNumAudioChannelsParam(state.Request, state.AudioStream);
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// Boost volume to 200% when downsampling from 6ch to 2ch
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if (channels.HasValue && channels.Value <= 2 && state.AudioStream.Channels.HasValue && state.AudioStream.Channels.Value > 5)
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{
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volParam = ",volume=2.000000";
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}
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if (state.Request.AudioSampleRate.HasValue)
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{
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audioSampleRate = state.Request.AudioSampleRate.Value + ":";
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}
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var adelay = isHls ? "adelay=1," : string.Empty;
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var pts = string.Empty;
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if (state.SubtitleStream != null)
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{
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if (state.SubtitleStream.Codec.IndexOf("srt", StringComparison.OrdinalIgnoreCase) != -1 ||
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state.SubtitleStream.Codec.IndexOf("subrip", StringComparison.OrdinalIgnoreCase) != -1 ||
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string.Equals(state.SubtitleStream.Codec, "ass", StringComparison.OrdinalIgnoreCase) ||
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string.Equals(state.SubtitleStream.Codec, "ssa", StringComparison.OrdinalIgnoreCase))
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{
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var seconds = TimeSpan.FromTicks(state.Request.StartTimeTicks ?? 0).TotalSeconds;
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pts = string.Format(",asetpts=PTS-{0}/TB",
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Math.Round(seconds).ToString(UsCulture));
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}
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}
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return string.Format("-af \"{0}aresample={1}async={4}{2}{3}\"",
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adelay,
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audioSampleRate,
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volParam,
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pts,
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state.AudioSync.ToString(UsCulture));
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}
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/// <summary>
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/// If we're going to put a fixed size on the command line, this will calculate it
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/// </summary>
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/// <param name="state">The state.</param>
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/// <param name="outputVideoCodec">The output video codec.</param>
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/// <param name="performTextSubtitleConversion">if set to <c>true</c> [perform text subtitle conversion].</param>
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/// <returns>System.String.</returns>
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protected string GetOutputSizeParam(StreamState state, string outputVideoCodec, bool performTextSubtitleConversion)
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{
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// http://sonnati.wordpress.com/2012/10/19/ffmpeg-the-swiss-army-knife-of-internet-streaming-part-vi/
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var assSubtitleParam = string.Empty;
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var copyTsParam = string.Empty;
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var yadifParam = "yadif=0:-1:0,";
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var request = state.VideoRequest;
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if (state.SubtitleStream != null)
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{
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if (state.SubtitleStream.Codec.IndexOf("srt", StringComparison.OrdinalIgnoreCase) != -1 ||
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state.SubtitleStream.Codec.IndexOf("subrip", StringComparison.OrdinalIgnoreCase) != -1 ||
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string.Equals(state.SubtitleStream.Codec, "ass", StringComparison.OrdinalIgnoreCase) ||
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string.Equals(state.SubtitleStream.Codec, "ssa", StringComparison.OrdinalIgnoreCase))
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{
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assSubtitleParam = GetTextSubtitleParam(state, performTextSubtitleConversion);
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copyTsParam = " -copyts";
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}
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}
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// If fixed dimensions were supplied
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if (request.Width.HasValue && request.Height.HasValue)
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{
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var widthParam = request.Width.Value.ToString(UsCulture);
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var heightParam = request.Height.Value.ToString(UsCulture);
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return string.Format("{4} -vf \"{0}scale=trunc({1}/2)*2:trunc({2}/2)*2{3}\"",yadifParam, widthParam, heightParam, assSubtitleParam, copyTsParam);
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}
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var isH264Output = outputVideoCodec.Equals("libx264", StringComparison.OrdinalIgnoreCase);
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// If a fixed width was requested
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if (request.Width.HasValue)
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{
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var widthParam = request.Width.Value.ToString(UsCulture);
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return isH264Output ?
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string.Format("{3} -vf \"{0}scale={1}:trunc(ow/a/2)*2{2}\"",yadifParam, widthParam, assSubtitleParam, copyTsParam) :
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string.Format("{3} -vf \"{0}scale={1}:-1{2}\"",yadifParam, widthParam, assSubtitleParam, copyTsParam);
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}
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// If a fixed height was requested
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if (request.Height.HasValue)
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{
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var heightParam = request.Height.Value.ToString(UsCulture);
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return isH264Output ?
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string.Format("{3} -vf \"{0}scale=trunc(oh*a*2)/2:{1}{2}\"",yadifParam, heightParam, assSubtitleParam, copyTsParam) :
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string.Format("{3} -vf \"{0}scale=-1:{1}{2}\"",yadifParam, heightParam, assSubtitleParam, copyTsParam);
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}
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// If a max width was requested
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if (request.MaxWidth.HasValue && (!request.MaxHeight.HasValue || state.VideoStream == null))
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{
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var maxWidthParam = request.MaxWidth.Value.ToString(UsCulture);
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return isH264Output ?
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string.Format("{3} -vf \"{0}scale=min(iw\\,{1}):trunc(ow/a/2)*2{2}\"",yadifParam, maxWidthParam, assSubtitleParam, copyTsParam) :
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string.Format("{3} -vf \"{0}scale=min(iw\\,{1}):-1{2}\"",yadifParam, maxWidthParam, assSubtitleParam, copyTsParam);
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}
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// If a max height was requested
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if (request.MaxHeight.HasValue && (!request.MaxWidth.HasValue || state.VideoStream == null))
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{
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var maxHeightParam = request.MaxHeight.Value.ToString(UsCulture);
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return isH264Output ?
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string.Format("{3} -vf \"{0}scale=trunc(oh*a*2)/2:min(ih\\,{1}){2}\"",yadifParam, maxHeightParam, assSubtitleParam, copyTsParam) :
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string.Format("{3} -vf \"{0}scale=-1:min(ih\\,{1}){2}\"",yadifParam, maxHeightParam, assSubtitleParam, copyTsParam);
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}
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if (state.VideoStream == null)
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{
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// No way to figure this out
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return string.Empty;
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}
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// Need to perform calculations manually
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// Try to account for bad media info
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var currentHeight = state.VideoStream.Height ?? request.MaxHeight ?? request.Height ?? 0;
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var currentWidth = state.VideoStream.Width ?? request.MaxWidth ?? request.Width ?? 0;
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var outputSize = DrawingUtils.Resize(currentWidth, currentHeight, request.Width, request.Height, request.MaxWidth, request.MaxHeight);
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// If we're encoding with libx264, it can't handle odd numbered widths or heights, so we'll have to fix that
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if (isH264Output)
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{
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var widthParam = outputSize.Width.ToString(UsCulture);
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var heightParam = outputSize.Height.ToString(UsCulture);
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return string.Format("{4} -vf \"{0}scale=trunc({1}/2)*2:trunc({2}/2)*2{3}\"",yadifParam, widthParam, heightParam, assSubtitleParam, copyTsParam);
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}
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// Otherwise use -vf scale since ffmpeg will ensure internally that the aspect ratio is preserved
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return string.Format("{3} -vf \"{0}scale={1}:-1{2}\"",yadifParam, Convert.ToInt32(outputSize.Width), assSubtitleParam, copyTsParam);
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}
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/// <summary>
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/// Gets the text subtitle param.
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/// </summary>
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/// <param name="state">The state.</param>
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/// <param name="performConversion">if set to <c>true</c> [perform conversion].</param>
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/// <returns>System.String.</returns>
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protected string GetTextSubtitleParam(StreamState state, bool performConversion)
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{
|
|
var path = state.SubtitleStream.IsExternal ? GetConvertedAssPath(state.MediaPath, state.SubtitleStream, performConversion) :
|
|
GetExtractedAssPath(state, performConversion);
|
|
|
|
if (string.IsNullOrEmpty(path))
|
|
{
|
|
return string.Empty;
|
|
}
|
|
|
|
var seconds = TimeSpan.FromTicks(state.Request.StartTimeTicks ?? 0).TotalSeconds;
|
|
|
|
return string.Format(",ass='{0}',setpts=PTS -{1}/TB",
|
|
path.Replace('\\', '/').Replace(":/", "\\:/"),
|
|
Math.Round(seconds).ToString(UsCulture));
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the extracted ass path.
|
|
/// </summary>
|
|
/// <param name="state">The state.</param>
|
|
/// <param name="performConversion">if set to <c>true</c> [perform conversion].</param>
|
|
/// <returns>System.String.</returns>
|
|
private string GetExtractedAssPath(StreamState state, bool performConversion)
|
|
{
|
|
var path = FFMpegManager.Instance.GetSubtitleCachePath(state.MediaPath, state.SubtitleStream, ".ass");
|
|
|
|
if (performConversion)
|
|
{
|
|
InputType type;
|
|
|
|
var inputPath = MediaEncoderHelpers.GetInputArgument(state.MediaPath, state.IsRemote, state.VideoType, state.IsoType, null, state.PlayableStreamFileNames, out type);
|
|
|
|
try
|
|
{
|
|
var parentPath = Path.GetDirectoryName(path);
|
|
|
|
Directory.CreateDirectory(parentPath);
|
|
|
|
var task = MediaEncoder.ExtractTextSubtitle(inputPath, type, state.SubtitleStream.Index, path, CancellationToken.None);
|
|
|
|
Task.WaitAll(task);
|
|
}
|
|
catch
|
|
{
|
|
return null;
|
|
}
|
|
}
|
|
|
|
return path;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the converted ass path.
|
|
/// </summary>
|
|
/// <param name="mediaPath">The media path.</param>
|
|
/// <param name="subtitleStream">The subtitle stream.</param>
|
|
/// <param name="performConversion">if set to <c>true</c> [perform conversion].</param>
|
|
/// <returns>System.String.</returns>
|
|
private string GetConvertedAssPath(string mediaPath, MediaStream subtitleStream, bool performConversion)
|
|
{
|
|
var path = FFMpegManager.Instance.GetSubtitleCachePath(mediaPath, subtitleStream, ".ass");
|
|
|
|
if (performConversion)
|
|
{
|
|
try
|
|
{
|
|
var parentPath = Path.GetDirectoryName(path);
|
|
|
|
Directory.CreateDirectory(parentPath);
|
|
|
|
var task = MediaEncoder.ConvertTextSubtitleToAss(subtitleStream.Path, path, subtitleStream.Language, CancellationToken.None);
|
|
|
|
Task.WaitAll(task);
|
|
}
|
|
catch
|
|
{
|
|
return null;
|
|
}
|
|
}
|
|
|
|
return path;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the internal graphical subtitle param.
|
|
/// </summary>
|
|
/// <param name="state">The state.</param>
|
|
/// <param name="outputVideoCodec">The output video codec.</param>
|
|
/// <returns>System.String.</returns>
|
|
protected string GetInternalGraphicalSubtitleParam(StreamState state, string outputVideoCodec)
|
|
{
|
|
var outputSizeParam = string.Empty;
|
|
|
|
var request = state.VideoRequest;
|
|
|
|
// Add resolution params, if specified
|
|
if (request.Width.HasValue || request.Height.HasValue || request.MaxHeight.HasValue || request.MaxWidth.HasValue)
|
|
{
|
|
outputSizeParam = GetOutputSizeParam(state, outputVideoCodec, false).TrimEnd('"');
|
|
outputSizeParam = "," + outputSizeParam.Substring(outputSizeParam.IndexOf("scale", StringComparison.OrdinalIgnoreCase));
|
|
}
|
|
|
|
var videoSizeParam = string.Empty;
|
|
|
|
if (state.VideoStream != null && state.VideoStream.Width.HasValue && state.VideoStream.Height.HasValue)
|
|
{
|
|
videoSizeParam = string.Format(",scale={0}:{1}", state.VideoStream.Width.Value.ToString(UsCulture), state.VideoStream.Height.Value.ToString(UsCulture));
|
|
}
|
|
|
|
return string.Format(" -filter_complex \"[0:{0}]format=yuva444p{3},lut=u=128:v=128:y=gammaval(.3)[sub] ; [0:{1}] [sub] overlay{2}\"",
|
|
state.SubtitleStream.Index,
|
|
state.VideoStream.Index,
|
|
outputSizeParam,
|
|
videoSizeParam);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the probe size argument.
|
|
/// </summary>
|
|
/// <param name="mediaPath">The media path.</param>
|
|
/// <param name="isVideo">if set to <c>true</c> [is video].</param>
|
|
/// <param name="videoType">Type of the video.</param>
|
|
/// <param name="isoType">Type of the iso.</param>
|
|
/// <returns>System.String.</returns>
|
|
protected string GetProbeSizeArgument(string mediaPath, bool isVideo, VideoType? videoType, IsoType? isoType)
|
|
{
|
|
var type = !isVideo ? MediaEncoderHelpers.GetInputType(null, null) :
|
|
MediaEncoderHelpers.GetInputType(videoType, isoType);
|
|
|
|
return MediaEncoder.GetProbeSizeArgument(type);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the number of audio channels to specify on the command line
|
|
/// </summary>
|
|
/// <param name="request">The request.</param>
|
|
/// <param name="audioStream">The audio stream.</param>
|
|
/// <returns>System.Nullable{System.Int32}.</returns>
|
|
protected int? GetNumAudioChannelsParam(StreamRequest request, MediaStream audioStream)
|
|
{
|
|
if (audioStream != null)
|
|
{
|
|
if (audioStream.Channels > 2 && request.AudioCodec.HasValue)
|
|
{
|
|
if (request.AudioCodec.Value == AudioCodecs.Wma)
|
|
{
|
|
// wmav2 currently only supports two channel output
|
|
return 2;
|
|
}
|
|
}
|
|
}
|
|
|
|
return request.AudioChannels;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Determines whether the specified stream is H264.
|
|
/// </summary>
|
|
/// <param name="stream">The stream.</param>
|
|
/// <returns><c>true</c> if the specified stream is H264; otherwise, <c>false</c>.</returns>
|
|
protected bool IsH264(MediaStream stream)
|
|
{
|
|
return stream.Codec.IndexOf("264", StringComparison.OrdinalIgnoreCase) != -1 ||
|
|
stream.Codec.IndexOf("avc", StringComparison.OrdinalIgnoreCase) != -1;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the name of the output audio codec
|
|
/// </summary>
|
|
/// <param name="request">The request.</param>
|
|
/// <returns>System.String.</returns>
|
|
protected string GetAudioCodec(StreamRequest request)
|
|
{
|
|
var codec = request.AudioCodec;
|
|
|
|
if (codec.HasValue)
|
|
{
|
|
if (codec == AudioCodecs.Aac)
|
|
{
|
|
return "aac -strict experimental";
|
|
}
|
|
if (codec == AudioCodecs.Mp3)
|
|
{
|
|
return "libmp3lame";
|
|
}
|
|
if (codec == AudioCodecs.Vorbis)
|
|
{
|
|
return "libvorbis";
|
|
}
|
|
if (codec == AudioCodecs.Wma)
|
|
{
|
|
return "wmav2";
|
|
}
|
|
|
|
return codec.ToString().ToLower();
|
|
}
|
|
|
|
return "copy";
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the name of the output video codec
|
|
/// </summary>
|
|
/// <param name="request">The request.</param>
|
|
/// <returns>System.String.</returns>
|
|
protected string GetVideoCodec(VideoStreamRequest request)
|
|
{
|
|
var codec = request.VideoCodec;
|
|
|
|
if (codec.HasValue)
|
|
{
|
|
if (codec == VideoCodecs.H264)
|
|
{
|
|
return "libx264";
|
|
}
|
|
if (codec == VideoCodecs.Vpx)
|
|
{
|
|
return "libvpx";
|
|
}
|
|
if (codec == VideoCodecs.Wmv)
|
|
{
|
|
return "wmv2";
|
|
}
|
|
if (codec == VideoCodecs.Theora)
|
|
{
|
|
return "libtheora";
|
|
}
|
|
|
|
return codec.ToString().ToLower();
|
|
}
|
|
|
|
return "copy";
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the input argument.
|
|
/// </summary>
|
|
/// <param name="state">The state.</param>
|
|
/// <returns>System.String.</returns>
|
|
protected string GetInputArgument(StreamState state)
|
|
{
|
|
if (state.SendInputOverStandardInput)
|
|
{
|
|
return "-";
|
|
}
|
|
|
|
var type = InputType.File;
|
|
|
|
var inputPath = new[] { state.MediaPath };
|
|
|
|
if (state.IsInputVideo)
|
|
{
|
|
if (!(state.VideoType == VideoType.Iso && state.IsoMount == null))
|
|
{
|
|
inputPath = MediaEncoderHelpers.GetInputArgument(state.MediaPath, state.IsRemote, state.VideoType, state.IsoType, state.IsoMount, state.PlayableStreamFileNames, out type);
|
|
}
|
|
}
|
|
|
|
return MediaEncoder.GetInputArgument(inputPath, type);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Starts the FFMPEG.
|
|
/// </summary>
|
|
/// <param name="state">The state.</param>
|
|
/// <param name="outputPath">The output path.</param>
|
|
/// <returns>Task.</returns>
|
|
protected async Task StartFfMpeg(StreamState state, string outputPath)
|
|
{
|
|
if (!File.Exists(MediaEncoder.EncoderPath))
|
|
{
|
|
throw new InvalidOperationException("ffmpeg was not found at " + MediaEncoder.EncoderPath);
|
|
}
|
|
|
|
Directory.CreateDirectory(Path.GetDirectoryName(outputPath));
|
|
|
|
if (state.IsInputVideo && state.VideoType == VideoType.Iso && state.IsoType.HasValue && IsoManager.CanMount(state.MediaPath))
|
|
{
|
|
state.IsoMount = await IsoManager.Mount(state.MediaPath, CancellationToken.None).ConfigureAwait(false);
|
|
}
|
|
|
|
var commandLineArgs = GetCommandLineArguments(outputPath, state, true);
|
|
|
|
if (ServerConfigurationManager.Configuration.EnableDebugEncodingLogging)
|
|
{
|
|
commandLineArgs = "-loglevel debug " + commandLineArgs;
|
|
}
|
|
|
|
var process = new Process
|
|
{
|
|
StartInfo = new ProcessStartInfo
|
|
{
|
|
CreateNoWindow = true,
|
|
UseShellExecute = false,
|
|
|
|
// Must consume both stdout and stderr or deadlocks may occur
|
|
RedirectStandardOutput = true,
|
|
RedirectStandardError = true,
|
|
|
|
FileName = MediaEncoder.EncoderPath,
|
|
WorkingDirectory = Path.GetDirectoryName(MediaEncoder.EncoderPath),
|
|
Arguments = commandLineArgs,
|
|
|
|
WindowStyle = ProcessWindowStyle.Hidden,
|
|
ErrorDialog = false,
|
|
|
|
RedirectStandardInput = state.SendInputOverStandardInput
|
|
},
|
|
|
|
EnableRaisingEvents = true
|
|
};
|
|
|
|
ApiEntryPoint.Instance.OnTranscodeBeginning(outputPath, TranscodingJobType, process, state.IsInputVideo, state.Request.StartTimeTicks, state.MediaPath, state.Request.DeviceId);
|
|
|
|
Logger.Info(process.StartInfo.FileName + " " + process.StartInfo.Arguments);
|
|
|
|
var logFilePath = Path.Combine(ServerConfigurationManager.ApplicationPaths.LogDirectoryPath, "ffmpeg-" + Guid.NewGuid() + ".txt");
|
|
Directory.CreateDirectory(Path.GetDirectoryName(logFilePath));
|
|
|
|
// FFMpeg writes debug/error info to stderr. This is useful when debugging so let's put it in the log directory.
|
|
state.LogFileStream = FileSystem.GetFileStream(logFilePath, FileMode.Create, FileAccess.Write, FileShare.Read, true);
|
|
|
|
process.Exited += (sender, args) => OnFfMpegProcessExited(process, state);
|
|
|
|
try
|
|
{
|
|
process.Start();
|
|
}
|
|
catch (Exception ex)
|
|
{
|
|
Logger.ErrorException("Error starting ffmpeg", ex);
|
|
|
|
ApiEntryPoint.Instance.OnTranscodeFailedToStart(outputPath, TranscodingJobType);
|
|
|
|
state.LogFileStream.Dispose();
|
|
|
|
throw;
|
|
}
|
|
|
|
if (state.SendInputOverStandardInput)
|
|
{
|
|
StreamToStandardInput(process, state);
|
|
}
|
|
|
|
// MUST read both stdout and stderr asynchronously or a deadlock may occurr
|
|
process.BeginOutputReadLine();
|
|
|
|
// Important - don't await the log task or we won't be able to kill ffmpeg when the user stops playback
|
|
process.StandardError.BaseStream.CopyToAsync(state.LogFileStream);
|
|
|
|
// Wait for the file to exist before proceeeding
|
|
while (!File.Exists(outputPath))
|
|
{
|
|
await Task.Delay(100).ConfigureAwait(false);
|
|
}
|
|
|
|
// Allow a small amount of time to buffer a little
|
|
if (state.IsInputVideo)
|
|
{
|
|
await Task.Delay(500).ConfigureAwait(false);
|
|
}
|
|
|
|
// This is arbitrary, but add a little buffer time when internet streaming
|
|
if (state.IsRemote)
|
|
{
|
|
await Task.Delay(3000).ConfigureAwait(false);
|
|
}
|
|
}
|
|
|
|
private async void StreamToStandardInput(Process process, StreamState state)
|
|
{
|
|
state.StandardInputCancellationTokenSource = new CancellationTokenSource();
|
|
|
|
try
|
|
{
|
|
await StreamToStandardInputInternal(process, state).ConfigureAwait(false);
|
|
}
|
|
catch (OperationCanceledException)
|
|
{
|
|
Logger.Debug("Stream to standard input closed normally.");
|
|
}
|
|
catch (Exception ex)
|
|
{
|
|
Logger.ErrorException("Error writing to standard input", ex);
|
|
}
|
|
}
|
|
|
|
private async Task StreamToStandardInputInternal(Process process, StreamState state)
|
|
{
|
|
state.StandardInputCancellationTokenSource = new CancellationTokenSource();
|
|
|
|
using (var fileStream = FileSystem.GetFileStream(state.MediaPath, FileMode.Open, FileAccess.Read, FileShare.ReadWrite, true))
|
|
{
|
|
await new EndlessStreamCopy().CopyStream(fileStream, process.StandardInput.BaseStream, state.StandardInputCancellationTokenSource.Token).ConfigureAwait(false);
|
|
}
|
|
}
|
|
|
|
protected int? GetVideoBitrateParam(StreamState state)
|
|
{
|
|
return state.VideoRequest.VideoBitRate;
|
|
}
|
|
|
|
protected int? GetAudioBitrateParam(StreamState state)
|
|
{
|
|
if (state.Request.AudioBitRate.HasValue)
|
|
{
|
|
// Make sure we don't request a bitrate higher than the source
|
|
var currentBitrate = state.AudioStream == null ? state.Request.AudioBitRate.Value : state.AudioStream.BitRate ?? state.Request.AudioBitRate.Value;
|
|
|
|
return Math.Min(currentBitrate, state.Request.AudioBitRate.Value);
|
|
}
|
|
|
|
return null;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the user agent param.
|
|
/// </summary>
|
|
/// <param name="path">The path.</param>
|
|
/// <returns>System.String.</returns>
|
|
protected string GetUserAgentParam(string path)
|
|
{
|
|
var useragent = GetUserAgent(path);
|
|
|
|
if (!string.IsNullOrEmpty(useragent))
|
|
{
|
|
return "-user-agent \"" + useragent + "\"";
|
|
}
|
|
|
|
return string.Empty;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the user agent.
|
|
/// </summary>
|
|
/// <param name="path">The path.</param>
|
|
/// <returns>System.String.</returns>
|
|
protected string GetUserAgent(string path)
|
|
{
|
|
if (string.IsNullOrEmpty(path))
|
|
{
|
|
throw new ArgumentNullException("path");
|
|
|
|
}
|
|
if (path.IndexOf("apple.com", StringComparison.OrdinalIgnoreCase) != -1)
|
|
{
|
|
return "QuickTime/7.7.4";
|
|
}
|
|
|
|
return string.Empty;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Processes the exited.
|
|
/// </summary>
|
|
/// <param name="process">The process.</param>
|
|
/// <param name="state">The state.</param>
|
|
protected async void OnFfMpegProcessExited(Process process, StreamState state)
|
|
{
|
|
if (state.IsoMount != null)
|
|
{
|
|
state.IsoMount.Dispose();
|
|
state.IsoMount = null;
|
|
}
|
|
|
|
if (state.StandardInputCancellationTokenSource != null)
|
|
{
|
|
state.StandardInputCancellationTokenSource.Cancel();
|
|
}
|
|
|
|
var outputFilePath = GetOutputFilePath(state);
|
|
|
|
state.LogFileStream.Dispose();
|
|
|
|
try
|
|
{
|
|
Logger.Info("FFMpeg exited with code {0} for {1}", process.ExitCode, outputFilePath);
|
|
}
|
|
catch
|
|
{
|
|
Logger.Info("FFMpeg exited with an error for {0}", outputFilePath);
|
|
}
|
|
|
|
if (!string.IsNullOrEmpty(state.LiveTvStreamId))
|
|
{
|
|
try
|
|
{
|
|
await LiveTvManager.CloseLiveStream(state.LiveTvStreamId, CancellationToken.None).ConfigureAwait(false);
|
|
}
|
|
catch (Exception ex)
|
|
{
|
|
Logger.ErrorException("Error closing live tv stream", ex);
|
|
}
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the state.
|
|
/// </summary>
|
|
/// <param name="request">The request.</param>
|
|
/// <param name="cancellationToken">The cancellation token.</param>
|
|
/// <returns>StreamState.</returns>
|
|
protected async Task<StreamState> GetState(StreamRequest request, CancellationToken cancellationToken)
|
|
{
|
|
if (request.ThrowDebugError)
|
|
{
|
|
throw new InvalidOperationException("You asked for a debug error, you got one.");
|
|
}
|
|
|
|
var url = Request.PathInfo;
|
|
|
|
if (!request.AudioCodec.HasValue)
|
|
{
|
|
request.AudioCodec = InferAudioCodec(url);
|
|
}
|
|
|
|
var state = new StreamState
|
|
{
|
|
Request = request,
|
|
RequestedUrl = url
|
|
};
|
|
|
|
var item = DtoService.GetItemByDtoId(request.Id);
|
|
|
|
if (item is ILiveTvRecording)
|
|
{
|
|
var recording = await LiveTvManager.GetInternalRecording(request.Id, cancellationToken).ConfigureAwait(false);
|
|
|
|
state.VideoType = VideoType.VideoFile;
|
|
state.IsInputVideo = string.Equals(recording.MediaType, MediaType.Video, StringComparison.OrdinalIgnoreCase);
|
|
state.PlayableStreamFileNames = new List<string>();
|
|
|
|
if (!string.IsNullOrEmpty(recording.RecordingInfo.Path) && File.Exists(recording.RecordingInfo.Path))
|
|
{
|
|
state.MediaPath = recording.RecordingInfo.Path;
|
|
state.IsRemote = false;
|
|
}
|
|
else if (!string.IsNullOrEmpty(recording.RecordingInfo.Url))
|
|
{
|
|
state.MediaPath = recording.RecordingInfo.Url;
|
|
state.IsRemote = true;
|
|
}
|
|
else
|
|
{
|
|
var streamInfo = await LiveTvManager.GetRecordingStream(request.Id, cancellationToken).ConfigureAwait(false);
|
|
|
|
state.LiveTvStreamId = streamInfo.Id;
|
|
|
|
if (!string.IsNullOrEmpty(streamInfo.Path) && File.Exists(streamInfo.Path))
|
|
{
|
|
state.MediaPath = streamInfo.Path;
|
|
state.IsRemote = false;
|
|
}
|
|
else if (!string.IsNullOrEmpty(streamInfo.Url))
|
|
{
|
|
state.MediaPath = streamInfo.Url;
|
|
state.IsRemote = true;
|
|
}
|
|
}
|
|
|
|
//state.RunTimeTicks = recording.RunTimeTicks;
|
|
state.SendInputOverStandardInput = recording.RecordingInfo.Status == RecordingStatus.InProgress;
|
|
state.AudioSync = 1000;
|
|
}
|
|
else if (item is LiveTvChannel)
|
|
{
|
|
var channel = LiveTvManager.GetInternalChannel(request.Id);
|
|
|
|
state.VideoType = VideoType.VideoFile;
|
|
state.IsInputVideo = string.Equals(channel.MediaType, MediaType.Video, StringComparison.OrdinalIgnoreCase);
|
|
state.PlayableStreamFileNames = new List<string>();
|
|
|
|
var streamInfo = await LiveTvManager.GetChannelStream(request.Id, cancellationToken).ConfigureAwait(false);
|
|
|
|
state.LiveTvStreamId = streamInfo.Id;
|
|
|
|
if (!string.IsNullOrEmpty(streamInfo.Path) && File.Exists(streamInfo.Path))
|
|
{
|
|
state.MediaPath = streamInfo.Path;
|
|
state.IsRemote = false;
|
|
}
|
|
else if (!string.IsNullOrEmpty(streamInfo.Url))
|
|
{
|
|
state.MediaPath = streamInfo.Url;
|
|
state.IsRemote = true;
|
|
}
|
|
|
|
state.SendInputOverStandardInput = true;
|
|
state.AudioSync = 1000;
|
|
}
|
|
else
|
|
{
|
|
state.MediaPath = item.Path;
|
|
state.IsRemote = item.LocationType == LocationType.Remote;
|
|
|
|
var video = item as Video;
|
|
|
|
if (video != null)
|
|
{
|
|
state.IsInputVideo = true;
|
|
state.VideoType = video.VideoType;
|
|
state.IsoType = video.IsoType;
|
|
|
|
state.PlayableStreamFileNames = video.PlayableStreamFileNames == null
|
|
? new List<string>()
|
|
: video.PlayableStreamFileNames.ToList();
|
|
}
|
|
|
|
state.RunTimeTicks = item.RunTimeTicks;
|
|
}
|
|
|
|
var videoRequest = request as VideoStreamRequest;
|
|
|
|
var mediaStreams = ItemRepository.GetMediaStreams(new MediaStreamQuery
|
|
{
|
|
ItemId = item.Id
|
|
|
|
}).ToList();
|
|
|
|
if (videoRequest != null)
|
|
{
|
|
if (!videoRequest.VideoCodec.HasValue)
|
|
{
|
|
videoRequest.VideoCodec = InferVideoCodec(url);
|
|
}
|
|
|
|
state.VideoStream = GetMediaStream(mediaStreams, videoRequest.VideoStreamIndex, MediaStreamType.Video);
|
|
state.SubtitleStream = GetMediaStream(mediaStreams, videoRequest.SubtitleStreamIndex, MediaStreamType.Subtitle, false);
|
|
state.AudioStream = GetMediaStream(mediaStreams, videoRequest.AudioStreamIndex, MediaStreamType.Audio);
|
|
}
|
|
else
|
|
{
|
|
state.AudioStream = GetMediaStream(mediaStreams, null, MediaStreamType.Audio, true);
|
|
}
|
|
|
|
state.HasMediaStreams = mediaStreams.Count > 0;
|
|
|
|
return state;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Infers the audio codec based on the url
|
|
/// </summary>
|
|
/// <param name="url">The URL.</param>
|
|
/// <returns>System.Nullable{AudioCodecs}.</returns>
|
|
private AudioCodecs? InferAudioCodec(string url)
|
|
{
|
|
var ext = Path.GetExtension(url);
|
|
|
|
if (string.Equals(ext, ".mp3", StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
return AudioCodecs.Mp3;
|
|
}
|
|
if (string.Equals(ext, ".aac", StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
return AudioCodecs.Aac;
|
|
}
|
|
if (string.Equals(ext, ".wma", StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
return AudioCodecs.Wma;
|
|
}
|
|
if (string.Equals(ext, ".ogg", StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
return AudioCodecs.Vorbis;
|
|
}
|
|
if (string.Equals(ext, ".oga", StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
return AudioCodecs.Vorbis;
|
|
}
|
|
if (string.Equals(ext, ".ogv", StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
return AudioCodecs.Vorbis;
|
|
}
|
|
if (string.Equals(ext, ".webm", StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
return AudioCodecs.Vorbis;
|
|
}
|
|
if (string.Equals(ext, ".webma", StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
return AudioCodecs.Vorbis;
|
|
}
|
|
|
|
return null;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Infers the video codec.
|
|
/// </summary>
|
|
/// <param name="url">The URL.</param>
|
|
/// <returns>System.Nullable{VideoCodecs}.</returns>
|
|
private VideoCodecs? InferVideoCodec(string url)
|
|
{
|
|
var ext = Path.GetExtension(url);
|
|
|
|
if (string.Equals(ext, ".asf", StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
return VideoCodecs.Wmv;
|
|
}
|
|
if (string.Equals(ext, ".webm", StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
return VideoCodecs.Vpx;
|
|
}
|
|
if (string.Equals(ext, ".ogg", StringComparison.OrdinalIgnoreCase) || string.Equals(ext, ".ogv", StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
return VideoCodecs.Theora;
|
|
}
|
|
if (string.Equals(ext, ".m3u8", StringComparison.OrdinalIgnoreCase) || string.Equals(ext, ".ts", StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
return VideoCodecs.H264;
|
|
}
|
|
|
|
return VideoCodecs.Copy;
|
|
}
|
|
}
|
|
}
|