868 lines
32 KiB
C#
868 lines
32 KiB
C#
using System.Globalization;
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using MediaBrowser.Common.Extensions;
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using MediaBrowser.Common.IO;
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using MediaBrowser.Common.MediaInfo;
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using MediaBrowser.Controller;
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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.MediaInfo;
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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 System;
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using System.Collections.Generic;
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using System.ComponentModel;
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using System.Diagnostics;
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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.Model.IO;
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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 IServerApplicationPaths ApplicationPaths { get; 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; 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; 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; 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; 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="appPaths">The app paths.</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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protected BaseStreamingService(IServerApplicationPaths appPaths, IUserManager userManager, ILibraryManager libraryManager, IIsoManager isoManager, IMediaEncoder mediaEncoder)
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{
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ApplicationPaths = appPaths;
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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.Url);
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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 = ApplicationPaths.EncodedMediaCachePath;
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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.Item.LocationType == LocationType.Remote)
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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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/// <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 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 || state.SubtitleStream.Codec.IndexOf("subrip", StringComparison.OrdinalIgnoreCase) != -1)
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{
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assSubtitleParam = GetTextSubtitleParam((Video)state.Item, state.SubtitleStream, request.StartTimeTicks, performTextSubtitleConversion);
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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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return string.Format(" -vf \"scale={0}:{1}{2}\"", request.Width.Value, request.Height.Value, assSubtitleParam);
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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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return isH264Output ?
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string.Format(" -vf \"scale={0}:trunc(ow/a/2)*2{1}\"", request.Width.Value, assSubtitleParam) :
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string.Format(" -vf \"scale={0}:-1{1}\"", request.Width.Value, assSubtitleParam);
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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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return isH264Output ?
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string.Format(" -vf \"scale=min(iw\\,{0}):trunc(ow/a/2)*2{1}\"", request.MaxWidth.Value, assSubtitleParam) :
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string.Format(" -vf \"scale=min(iw\\,{0}):-1{1}\"", request.MaxWidth.Value, assSubtitleParam);
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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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return string.Format(" -vf \"scale=trunc({0}/2)*2:trunc({1}/2)*2{2}\"", outputSize.Width, outputSize.Height, assSubtitleParam);
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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(" -vf \"scale={0}:-1{1}\"", Convert.ToInt32(outputSize.Width), assSubtitleParam);
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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="video">The video.</param>
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/// <param name="subtitleStream">The subtitle stream.</param>
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/// <param name="startTimeTicks">The start time ticks.</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(Video video, MediaStream subtitleStream, long? startTimeTicks, bool performConversion)
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{
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var path = subtitleStream.IsExternal ? GetConvertedAssPath(video, subtitleStream, startTimeTicks, performConversion) : GetExtractedAssPath(video, subtitleStream, startTimeTicks, performConversion);
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if (string.IsNullOrEmpty(path))
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{
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return string.Empty;
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}
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return string.Format(",ass='{0}'", path.Replace('\\', '/').Replace(":/", "\\:/"));
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}
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/// <summary>
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/// Gets the extracted ass path.
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/// </summary>
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/// <param name="video">The video.</param>
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/// <param name="subtitleStream">The subtitle stream.</param>
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/// <param name="startTimeTicks">The start time ticks.</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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private string GetExtractedAssPath(Video video, MediaStream subtitleStream, long? startTimeTicks, bool performConversion)
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{
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var offset = TimeSpan.FromTicks(startTimeTicks ?? 0);
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var path = Kernel.Instance.FFMpegManager.GetSubtitleCachePath(video, subtitleStream.Index, offset, ".ass");
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if (performConversion && !File.Exists(path))
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{
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InputType type;
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var inputPath = MediaEncoderHelpers.GetInputArgument(video, null, out type);
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try
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{
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var parentPath = Path.GetDirectoryName(path);
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if (!Directory.Exists(parentPath))
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{
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Directory.CreateDirectory(parentPath);
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}
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var task = MediaEncoder.ExtractTextSubtitle(inputPath, type, subtitleStream.Index, offset, path, CancellationToken.None);
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Task.WaitAll(task);
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}
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catch
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{
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return null;
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}
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}
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return path;
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}
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/// <summary>
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/// Gets the converted ass path.
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/// </summary>
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/// <param name="video">The video.</param>
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/// <param name="subtitleStream">The subtitle stream.</param>
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/// <param name="startTimeTicks">The start time ticks.</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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private string GetConvertedAssPath(Video video, MediaStream subtitleStream, long? startTimeTicks, bool performConversion)
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{
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var offset = TimeSpan.FromTicks(startTimeTicks ?? 0);
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var path = Kernel.Instance.FFMpegManager.GetSubtitleCachePath(video, subtitleStream.Index, offset, ".ass");
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if (performConversion && !File.Exists(path))
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{
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try
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{
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var parentPath = Path.GetDirectoryName(path);
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if (!Directory.Exists(parentPath))
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{
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Directory.CreateDirectory(parentPath);
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}
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var task = MediaEncoder.ConvertTextSubtitleToAss(subtitleStream.Path, path, subtitleStream.Language, offset, CancellationToken.None);
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Task.WaitAll(task);
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}
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catch
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{
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return null;
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}
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}
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return path;
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}
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/// <summary>
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/// Gets the internal graphical subtitle param.
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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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/// <returns>System.String.</returns>
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protected string GetInternalGraphicalSubtitleParam(StreamState state, string outputVideoCodec)
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{
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var outputSizeParam = string.Empty;
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var request = state.VideoRequest;
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// Add resolution params, if specified
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if (request.Width.HasValue || request.Height.HasValue || request.MaxHeight.HasValue || request.MaxWidth.HasValue)
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{
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outputSizeParam = GetOutputSizeParam(state, outputVideoCodec, false).TrimEnd('"');
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outputSizeParam = "," + outputSizeParam.Substring(outputSizeParam.IndexOf("scale", StringComparison.OrdinalIgnoreCase));
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}
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return string.Format(" -filter_complex \"[0:{0}]format=yuva444p,lut=u=128:v=128:y=gammaval(.3)[sub] ; [0:{1}] [sub] overlay{2}\"", state.SubtitleStream.Index, state.VideoStream.Index, outputSizeParam);
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}
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/// <summary>
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/// Gets the probe size argument.
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/// </summary>
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/// <param name="item">The item.</param>
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/// <returns>System.String.</returns>
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protected string GetProbeSizeArgument(BaseItem item)
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{
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return MediaEncoder.GetProbeSizeArgument(MediaEncoderHelpers.GetInputType(item));
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}
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/// <summary>
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/// Gets the number of audio channels to specify on the command line
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/// </summary>
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/// <param name="request">The request.</param>
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/// <param name="audioStream">The audio stream.</param>
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/// <returns>System.Nullable{System.Int32}.</returns>
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protected int? GetNumAudioChannelsParam(StreamRequest request, MediaStream audioStream)
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{
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if (audioStream.Channels > 2 && request.AudioCodec.HasValue)
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{
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if (request.AudioCodec.Value == AudioCodecs.Wma)
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{
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// wmav2 currently only supports two channel output
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return 2;
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}
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}
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return request.AudioChannels;
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}
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/// <summary>
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/// Determines whether the specified stream is H264.
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/// </summary>
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/// <param name="stream">The stream.</param>
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/// <returns><c>true</c> if the specified stream is H264; otherwise, <c>false</c>.</returns>
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protected bool IsH264(MediaStream stream)
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{
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return stream.Codec.IndexOf("264", StringComparison.OrdinalIgnoreCase) != -1 ||
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stream.Codec.IndexOf("avc", StringComparison.OrdinalIgnoreCase) != -1;
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}
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/// <summary>
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/// Gets the name of the output audio codec
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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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protected string GetAudioCodec(StreamRequest request)
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{
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var codec = request.AudioCodec;
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if (codec.HasValue)
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{
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if (codec == AudioCodecs.Aac)
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{
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return "aac";
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}
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if (codec == AudioCodecs.Mp3)
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{
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return "libmp3lame";
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}
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if (codec == AudioCodecs.Vorbis)
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{
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return "libvorbis";
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}
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if (codec == AudioCodecs.Wma)
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{
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return "wmav2";
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}
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return codec.ToString().ToLower();
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}
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return "copy";
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}
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/// <summary>
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/// Gets the name of the output video codec
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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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protected string GetVideoCodec(VideoStreamRequest request)
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{
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var codec = request.VideoCodec;
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if (codec.HasValue)
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{
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if (codec == VideoCodecs.H264)
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{
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return "libx264";
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|
}
|
|
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="item">The item.</param>
|
|
/// <param name="isoMount">The iso mount.</param>
|
|
/// <returns>System.String.</returns>
|
|
protected string GetInputArgument(BaseItem item, IIsoMount isoMount)
|
|
{
|
|
var type = InputType.AudioFile;
|
|
|
|
var inputPath = new[] { item.Path };
|
|
|
|
var video = item as Video;
|
|
|
|
if (video != null)
|
|
{
|
|
if (!(video.VideoType == VideoType.Iso && isoMount == null))
|
|
{
|
|
inputPath = MediaEncoderHelpers.GetInputArgument(video, isoMount, 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)
|
|
{
|
|
var parentPath = Path.GetDirectoryName(outputPath);
|
|
|
|
if (!Directory.Exists(parentPath))
|
|
{
|
|
Directory.CreateDirectory(parentPath);
|
|
}
|
|
|
|
var video = state.Item as Video;
|
|
|
|
if (video != null && video.VideoType == VideoType.Iso && video.IsoType.HasValue && IsoManager.CanMount(video.Path))
|
|
{
|
|
state.IsoMount = await IsoManager.Mount(video.Path, CancellationToken.None).ConfigureAwait(false);
|
|
}
|
|
|
|
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 = GetCommandLineArguments(outputPath, state, true),
|
|
|
|
WindowStyle = ProcessWindowStyle.Hidden,
|
|
ErrorDialog = false
|
|
},
|
|
|
|
EnableRaisingEvents = true
|
|
};
|
|
|
|
ApiEntryPoint.Instance.OnTranscodeBeginning(outputPath, TranscodingJobType, process, video != null, state.Request.StartTimeTicks);
|
|
|
|
Logger.Info(process.StartInfo.FileName + " " + process.StartInfo.Arguments);
|
|
|
|
var logFilePath = Path.Combine(ApplicationPaths.LogDirectoryPath, "ffmpeg-" + Guid.NewGuid() + ".txt");
|
|
|
|
// FFMpeg writes debug/error info to stderr. This is useful when debugging so let's put it in the log directory.
|
|
state.LogFileStream = new FileStream(logFilePath, FileMode.Create, FileAccess.Write, FileShare.Read, StreamDefaults.DefaultFileStreamBufferSize, FileOptions.Asynchronous);
|
|
|
|
process.Exited += (sender, args) => OnFfMpegProcessExited(process, state);
|
|
|
|
try
|
|
{
|
|
process.Start();
|
|
}
|
|
catch (Win32Exception ex)
|
|
{
|
|
Logger.ErrorException("Error starting ffmpeg", ex);
|
|
|
|
ApiEntryPoint.Instance.OnTranscodeFailedToStart(outputPath, TranscodingJobType);
|
|
|
|
state.LogFileStream.Dispose();
|
|
|
|
throw;
|
|
}
|
|
|
|
// 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.Item is Video)
|
|
{
|
|
await Task.Delay(500).ConfigureAwait(false);
|
|
}
|
|
|
|
// This is arbitrary, but add a little buffer time when internet streaming
|
|
if (state.Item.LocationType == LocationType.Remote)
|
|
{
|
|
await Task.Delay(2000).ConfigureAwait(false);
|
|
}
|
|
}
|
|
|
|
protected int? GetVideoBitrateParam(StreamState state)
|
|
{
|
|
if (state.VideoRequest.VideoBitRate.HasValue)
|
|
{
|
|
// Make sure we don't request a bitrate higher than the source
|
|
var currentBitrate = state.VideoStream == null ? state.VideoRequest.VideoBitRate.Value : state.VideoStream.BitRate ?? state.VideoRequest.VideoBitRate.Value;
|
|
|
|
return Math.Min(currentBitrate, state.VideoRequest.VideoBitRate.Value);
|
|
}
|
|
|
|
return null;
|
|
}
|
|
|
|
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="item">The item.</param>
|
|
/// <returns>System.String.</returns>
|
|
protected string GetUserAgentParam(BaseItem item)
|
|
{
|
|
var useragent = GetUserAgent(item);
|
|
|
|
if (!string.IsNullOrEmpty(useragent))
|
|
{
|
|
return "-user-agent \"" + useragent + "\"";
|
|
}
|
|
|
|
return string.Empty;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the user agent.
|
|
/// </summary>
|
|
/// <param name="item">The item.</param>
|
|
/// <returns>System.String.</returns>
|
|
protected string GetUserAgent(BaseItem item)
|
|
{
|
|
if (item.Path.IndexOf("apple.com", StringComparison.OrdinalIgnoreCase) != -1)
|
|
{
|
|
return "QuickTime/7.6.2";
|
|
}
|
|
|
|
return string.Empty;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Processes the exited.
|
|
/// </summary>
|
|
/// <param name="process">The process.</param>
|
|
/// <param name="state">The state.</param>
|
|
protected void OnFfMpegProcessExited(Process process, StreamState state)
|
|
{
|
|
if (state.IsoMount != null)
|
|
{
|
|
state.IsoMount.Dispose();
|
|
state.IsoMount = null;
|
|
}
|
|
|
|
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);
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the state.
|
|
/// </summary>
|
|
/// <param name="request">The request.</param>
|
|
/// <returns>StreamState.</returns>
|
|
protected StreamState GetState(StreamRequest request)
|
|
{
|
|
var item = DtoBuilder.GetItemByClientId(request.Id, UserManager, LibraryManager);
|
|
|
|
var media = (IHasMediaStreams)item;
|
|
|
|
var url = RequestContext.PathInfo;
|
|
|
|
if (!request.AudioCodec.HasValue)
|
|
{
|
|
request.AudioCodec = InferAudioCodec(url);
|
|
}
|
|
|
|
var state = new StreamState
|
|
{
|
|
Item = item,
|
|
Request = request,
|
|
Url = url
|
|
};
|
|
|
|
var videoRequest = request as VideoStreamRequest;
|
|
|
|
if (videoRequest != null)
|
|
{
|
|
if (!videoRequest.VideoCodec.HasValue)
|
|
{
|
|
videoRequest.VideoCodec = InferVideoCodec(url);
|
|
}
|
|
|
|
state.VideoStream = GetMediaStream(media.MediaStreams, videoRequest.VideoStreamIndex, MediaStreamType.Video);
|
|
state.SubtitleStream = GetMediaStream(media.MediaStreams, videoRequest.SubtitleStreamIndex, MediaStreamType.Subtitle, false);
|
|
state.AudioStream = GetMediaStream(media.MediaStreams, videoRequest.AudioStreamIndex, MediaStreamType.Audio);
|
|
}
|
|
else
|
|
{
|
|
state.AudioStream = GetMediaStream(media.MediaStreams, null, MediaStreamType.Audio, true);
|
|
}
|
|
|
|
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;
|
|
}
|
|
}
|
|
}
|