2438 lines
91 KiB
C#
2438 lines
91 KiB
C#
using MediaBrowser.Common.Extensions;
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using MediaBrowser.Controller.Configuration;
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using MediaBrowser.Controller.Devices;
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using MediaBrowser.Controller.Dlna;
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using MediaBrowser.Controller.Entities;
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using MediaBrowser.Controller.Library;
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using MediaBrowser.Controller.MediaEncoding;
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using MediaBrowser.Model.Dlna;
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using MediaBrowser.Model.Dto;
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using MediaBrowser.Model.Entities;
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using MediaBrowser.Model.Extensions;
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using MediaBrowser.Model.IO;
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using MediaBrowser.Model.MediaInfo;
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using MediaBrowser.Model.Serialization;
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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.Text;
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using System.Threading;
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using System.Threading.Tasks;
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using CommonIO;
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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 IFileSystem FileSystem { get; private set; }
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protected IDlnaManager DlnaManager { get; private set; }
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protected IDeviceManager DeviceManager { get; private set; }
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protected ISubtitleEncoder SubtitleEncoder { get; private set; }
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protected IMediaSourceManager MediaSourceManager { get; private set; }
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protected IZipClient ZipClient { get; private set; }
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protected IJsonSerializer JsonSerializer { 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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protected BaseStreamingService(IServerConfigurationManager serverConfig, IUserManager userManager, ILibraryManager libraryManager, IIsoManager isoManager, IMediaEncoder mediaEncoder, IFileSystem fileSystem, IDlnaManager dlnaManager, ISubtitleEncoder subtitleEncoder, IDeviceManager deviceManager, IMediaSourceManager mediaSourceManager, IZipClient zipClient, IJsonSerializer jsonSerializer)
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{
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JsonSerializer = jsonSerializer;
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ZipClient = zipClient;
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MediaSourceManager = mediaSourceManager;
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DeviceManager = deviceManager;
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SubtitleEncoder = subtitleEncoder;
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DlnaManager = dlnaManager;
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FileSystem = fileSystem;
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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="isEncoding">if set to <c>true</c> [is encoding].</param>
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/// <returns>System.String.</returns>
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protected abstract string GetCommandLineArguments(string outputPath, StreamState state, bool isEncoding);
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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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private 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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var data = GetCommandLineArguments("dummy\\dummy", state, false);
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data += "-" + (state.Request.DeviceId ?? string.Empty);
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data += "-" + (state.Request.PlaySessionId ?? string.Empty);
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var dataHash = data.GetMD5().ToString("N");
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if (EnableOutputInSubFolder)
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{
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return Path.Combine(folder, dataHash, dataHash + (outputFileExtension ?? string.Empty).ToLower());
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}
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return Path.Combine(folder, dataHash + (outputFileExtension ?? string.Empty).ToLower());
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}
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protected virtual bool EnableOutputInSubFolder
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{
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get { return false; }
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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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/// 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 ?? 0;
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if (time > 0)
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{
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return string.Format("-ss {0}", MediaEncoder.GetTimeParameter(time));
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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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// If we don't have known media info
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// If input is video, use -sn to drop subtitles
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// Otherwise just return empty
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if (state.VideoStream == null && state.AudioStream == null)
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{
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return state.IsInputVideo ? "-sn" : string.Empty;
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}
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// We have media info, but we don't know the stream indexes
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if (state.VideoStream != null && state.VideoStream.Index == -1)
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{
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return "-sn";
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}
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// We have media info, but we don't know the stream indexes
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if (state.AudioStream != null && state.AudioStream.Index == -1)
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{
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return state.IsInputVideo ? "-sn" : string.Empty;
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}
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var args = string.Empty;
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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 || state.VideoRequest.SubtitleMethod == SubtitleDeliveryMethod.Hls)
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{
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args += " -map -0:s";
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}
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else if (state.SubtitleStream.IsExternal && !state.SubtitleStream.IsTextSubtitleStream)
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{
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args += " -map 1:0 -sn";
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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 (type == MediaStreamType.Video)
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{
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streams = streams.Where(i => !string.Equals(i.Codec, "mjpeg", StringComparison.OrdinalIgnoreCase)).ToList();
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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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/// Gets the number of threads.
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/// </summary>
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/// <returns>System.Int32.</returns>
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protected int GetNumberOfThreads(StreamState state, bool isWebm)
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{
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var threads = ApiEntryPoint.Instance.GetEncodingOptions().EncodingThreadCount;
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if (isWebm)
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{
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// Recommended per docs
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return Math.Max(Environment.ProcessorCount - 1, 2);
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}
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// Automatic
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if (threads == -1)
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{
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return 0;
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}
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return threads;
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}
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protected string GetH264Encoder(StreamState state)
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{
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var defaultEncoder = "libx264";
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// Only use alternative encoders for video files.
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// When using concat with folder rips, if the mfx session fails to initialize, ffmpeg will be stuck retrying and will not exit gracefully
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// Since transcoding of folder rips is expiremental anyway, it's not worth adding additional variables such as this.
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if (state.VideoType == VideoType.VideoFile)
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{
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var hwType = ApiEntryPoint.Instance.GetEncodingOptions().HardwareAccelerationType;
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if (string.Equals(hwType, "qsv", StringComparison.OrdinalIgnoreCase) ||
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string.Equals(hwType, "h264_qsv", StringComparison.OrdinalIgnoreCase))
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{
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return GetAvailableEncoder("h264_qsv", defaultEncoder);
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}
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if (string.Equals(hwType, "nvenc", StringComparison.OrdinalIgnoreCase))
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{
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return GetAvailableEncoder("h264_nvenc", defaultEncoder);
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}
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if (string.Equals(hwType, "h264_omx", StringComparison.OrdinalIgnoreCase))
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{
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return GetAvailableEncoder("h264_omx", defaultEncoder);
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}
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}
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return defaultEncoder;
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}
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private string GetAvailableEncoder(string preferredEncoder, string defaultEncoder)
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{
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if (MediaEncoder.SupportsEncoder(preferredEncoder))
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{
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return preferredEncoder;
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}
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return defaultEncoder;
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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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var param = string.Empty;
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var isVc1 = state.VideoStream != null &&
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string.Equals(state.VideoStream.Codec, "vc1", StringComparison.OrdinalIgnoreCase);
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if (string.Equals(videoCodec, "libx264", StringComparison.OrdinalIgnoreCase))
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{
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param = "-preset superfast";
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param += " -crf 23";
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}
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else if (string.Equals(videoCodec, "libx265", StringComparison.OrdinalIgnoreCase))
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{
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param = "-preset fast";
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param += " -crf 28";
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}
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// h264 (h264_qsv)
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else if (string.Equals(videoCodec, "h264_qsv", StringComparison.OrdinalIgnoreCase))
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{
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param = "-preset 7 -look_ahead 0";
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}
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// h264 (h264_nvenc)
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else if (string.Equals(videoCodec, "h264_nvenc", StringComparison.OrdinalIgnoreCase))
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{
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param = "-preset default";
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}
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// webm
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else if (string.Equals(videoCodec, "libvpx", StringComparison.OrdinalIgnoreCase))
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{
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// Values 0-3, 0 being highest quality but slower
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var profileScore = 0;
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string crf;
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var qmin = "0";
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var qmax = "50";
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crf = "10";
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if (isVc1)
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{
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profileScore++;
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}
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// Max of 2
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profileScore = Math.Min(profileScore, 2);
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// http://www.webmproject.org/docs/encoder-parameters/
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param = string.Format("-speed 16 -quality good -profile:v {0} -slices 8 -crf {1} -qmin {2} -qmax {3}",
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profileScore.ToString(UsCulture),
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crf,
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qmin,
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qmax);
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}
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else if (string.Equals(videoCodec, "mpeg4", StringComparison.OrdinalIgnoreCase))
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{
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param = "-mbd rd -flags +mv4+aic -trellis 2 -cmp 2 -subcmp 2 -bf 2";
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}
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// asf/wmv
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else if (string.Equals(videoCodec, "wmv2", StringComparison.OrdinalIgnoreCase))
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{
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param = "-qmin 2";
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}
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else if (string.Equals(videoCodec, "msmpeg4", StringComparison.OrdinalIgnoreCase))
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{
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param = "-mbd 2";
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}
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param += GetVideoBitrateParam(state, videoCodec);
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var framerate = GetFramerateParam(state);
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if (framerate.HasValue)
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{
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param += string.Format(" -r {0}", framerate.Value.ToString(UsCulture));
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}
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if (!string.IsNullOrEmpty(state.OutputVideoSync))
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{
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param += " -vsync " + state.OutputVideoSync;
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}
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if (!string.IsNullOrEmpty(state.VideoRequest.Profile))
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{
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if (!string.Equals(videoCodec, "h264_omx", StringComparison.OrdinalIgnoreCase))
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{
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// not supported by h264_omx
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param += " -profile:v " + state.VideoRequest.Profile;
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}
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}
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if (!string.IsNullOrEmpty(state.VideoRequest.Level))
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{
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// h264_qsv and h264_nvenc expect levels to be expressed as a decimal. libx264 supports decimal and non-decimal format
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if (string.Equals(videoCodec, "h264_qsv", StringComparison.OrdinalIgnoreCase) ||
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string.Equals(videoCodec, "h264_nvenc", StringComparison.OrdinalIgnoreCase))
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{
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switch (state.VideoRequest.Level)
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{
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case "30":
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param += " -level 3";
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break;
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case "31":
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param += " -level 3.1";
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break;
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case "32":
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param += " -level 3.2";
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break;
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case "40":
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param += " -level 4";
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break;
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case "41":
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param += " -level 4.1";
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break;
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case "42":
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param += " -level 4.2";
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break;
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case "50":
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param += " -level 5";
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break;
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case "51":
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param += " -level 5.1";
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break;
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case "52":
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param += " -level 5.2";
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break;
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default:
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param += " -level " + state.VideoRequest.Level;
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break;
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}
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}
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else if (!string.Equals(videoCodec, "h264_omx", StringComparison.OrdinalIgnoreCase))
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{
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param += " -level " + state.VideoRequest.Level;
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}
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}
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if (!string.Equals(videoCodec, "h264_omx", StringComparison.OrdinalIgnoreCase) &&
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!string.Equals(videoCodec, "h264_qsv", StringComparison.OrdinalIgnoreCase) &&
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!string.Equals(videoCodec, "h264_nvenc", StringComparison.OrdinalIgnoreCase))
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{
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param = "-pix_fmt yuv420p " + param;
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}
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return param;
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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 = state.OutputAudioChannels;
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// Boost volume to 200% when downsampling from 6ch to 2ch
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if (channels.HasValue && channels.Value <= 2)
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{
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if (state.AudioStream != null && state.AudioStream.Channels.HasValue && state.AudioStream.Channels.Value > 5 && !ApiEntryPoint.Instance.GetEncodingOptions().DownMixAudioBoost.Equals(1))
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{
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volParam = ",volume=" + ApiEntryPoint.Instance.GetEncodingOptions().DownMixAudioBoost.ToString(UsCulture);
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}
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}
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if (state.OutputAudioSampleRate.HasValue)
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{
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audioSampleRate = state.OutputAudioSampleRate.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 && state.SubtitleStream.IsTextSubtitleStream && state.VideoRequest.SubtitleMethod == SubtitleDeliveryMethod.Encode && !state.VideoRequest.CopyTimestamps)
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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", Math.Round(seconds).ToString(UsCulture));
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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.OutputAudioSync);
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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="allowTimeStampCopy">if set to <c>true</c> [allow time stamp copy].</param>
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/// <returns>System.String.</returns>
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protected string GetOutputSizeParam(StreamState state,
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string outputVideoCodec,
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bool allowTimeStampCopy = true)
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{
|
|
// http://sonnati.wordpress.com/2012/10/19/ffmpeg-the-swiss-army-knife-of-internet-streaming-part-vi/
|
|
|
|
var request = state.VideoRequest;
|
|
|
|
var filters = new List<string>();
|
|
|
|
if (state.DeInterlace)
|
|
{
|
|
filters.Add("yadif=0:-1:0");
|
|
}
|
|
|
|
// If fixed dimensions were supplied
|
|
if (request.Width.HasValue && request.Height.HasValue)
|
|
{
|
|
var widthParam = request.Width.Value.ToString(UsCulture);
|
|
var heightParam = request.Height.Value.ToString(UsCulture);
|
|
|
|
filters.Add(string.Format("scale=trunc({0}/2)*2:trunc({1}/2)*2", widthParam, heightParam));
|
|
}
|
|
|
|
// If Max dimensions were supplied, for width selects lowest even number between input width and width req size and selects lowest even number from in width*display aspect and requested size
|
|
else if (request.MaxWidth.HasValue && request.MaxHeight.HasValue)
|
|
{
|
|
var maxWidthParam = request.MaxWidth.Value.ToString(UsCulture);
|
|
var maxHeightParam = request.MaxHeight.Value.ToString(UsCulture);
|
|
|
|
filters.Add(string.Format("scale=trunc(min(max(iw\\,ih*dar)\\,min({0}\\,{1}*dar))/2)*2:trunc(min(max(iw/dar\\,ih)\\,min({0}/dar\\,{1}))/2)*2", maxWidthParam, maxHeightParam));
|
|
}
|
|
|
|
// If a fixed width was requested
|
|
else if (request.Width.HasValue)
|
|
{
|
|
var widthParam = request.Width.Value.ToString(UsCulture);
|
|
|
|
filters.Add(string.Format("scale={0}:trunc(ow/a/2)*2", widthParam));
|
|
}
|
|
|
|
// If a fixed height was requested
|
|
else if (request.Height.HasValue)
|
|
{
|
|
var heightParam = request.Height.Value.ToString(UsCulture);
|
|
|
|
filters.Add(string.Format("scale=trunc(oh*a/2)*2:{0}", heightParam));
|
|
}
|
|
|
|
// If a max width was requested
|
|
else if (request.MaxWidth.HasValue)
|
|
{
|
|
var maxWidthParam = request.MaxWidth.Value.ToString(UsCulture);
|
|
|
|
filters.Add(string.Format("scale=trunc(min(max(iw\\,ih*dar)\\,{0})/2)*2:trunc(ow/dar/2)*2", maxWidthParam));
|
|
}
|
|
|
|
// If a max height was requested
|
|
else if (request.MaxHeight.HasValue)
|
|
{
|
|
var maxHeightParam = request.MaxHeight.Value.ToString(UsCulture);
|
|
|
|
filters.Add(string.Format("scale=trunc(oh*a/2)*2:min(ih\\,{0})", maxHeightParam));
|
|
}
|
|
|
|
var output = string.Empty;
|
|
|
|
if (state.SubtitleStream != null && state.SubtitleStream.IsTextSubtitleStream && state.VideoRequest.SubtitleMethod == SubtitleDeliveryMethod.Encode)
|
|
{
|
|
var subParam = GetTextSubtitleParam(state);
|
|
|
|
filters.Add(subParam);
|
|
|
|
if (allowTimeStampCopy)
|
|
{
|
|
output += " -copyts";
|
|
}
|
|
}
|
|
|
|
if (filters.Count > 0)
|
|
{
|
|
output += string.Format(" -vf \"{0}\"", string.Join(",", filters.ToArray()));
|
|
}
|
|
|
|
return output;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the text subtitle param.
|
|
/// </summary>
|
|
/// <param name="state">The state.</param>
|
|
/// <returns>System.String.</returns>
|
|
protected string GetTextSubtitleParam(StreamState state)
|
|
{
|
|
var seconds = Math.Round(TimeSpan.FromTicks(state.Request.StartTimeTicks ?? 0).TotalSeconds);
|
|
|
|
var setPtsParam = state.VideoRequest.CopyTimestamps
|
|
? string.Empty
|
|
: string.Format(",setpts=PTS -{0}/TB", seconds.ToString(UsCulture));
|
|
|
|
if (state.SubtitleStream.IsExternal)
|
|
{
|
|
var subtitlePath = state.SubtitleStream.Path;
|
|
|
|
var charsetParam = string.Empty;
|
|
|
|
if (!string.IsNullOrEmpty(state.SubtitleStream.Language))
|
|
{
|
|
var charenc = SubtitleEncoder.GetSubtitleFileCharacterSet(subtitlePath, state.SubtitleStream.Language, state.MediaSource.Protocol, CancellationToken.None).Result;
|
|
|
|
if (!string.IsNullOrEmpty(charenc))
|
|
{
|
|
charsetParam = ":charenc=" + charenc;
|
|
}
|
|
}
|
|
|
|
// TODO: Perhaps also use original_size=1920x800 ??
|
|
return string.Format("subtitles=filename='{0}'{1}{2}",
|
|
MediaEncoder.EscapeSubtitleFilterPath(subtitlePath),
|
|
charsetParam,
|
|
setPtsParam);
|
|
}
|
|
|
|
var mediaPath = state.MediaPath ?? string.Empty;
|
|
|
|
return string.Format("subtitles='{0}:si={1}'{2}",
|
|
MediaEncoder.EscapeSubtitleFilterPath(mediaPath),
|
|
state.InternalSubtitleStreamOffset.ToString(UsCulture),
|
|
setPtsParam);
|
|
}
|
|
|
|
/// <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 GetGraphicalSubtitleParam(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).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));
|
|
}
|
|
|
|
var mapPrefix = state.SubtitleStream.IsExternal ?
|
|
1 :
|
|
0;
|
|
|
|
var subtitleStreamIndex = state.SubtitleStream.IsExternal
|
|
? 0
|
|
: state.SubtitleStream.Index;
|
|
|
|
return string.Format(" -filter_complex \"[{0}:{1}]format=yuva444p{4},lut=u=128:v=128:y=gammaval(.3)[sub] ; [0:{2}] [sub] overlay{3}\"",
|
|
mapPrefix.ToString(UsCulture),
|
|
subtitleStreamIndex.ToString(UsCulture),
|
|
state.VideoStream.Index.ToString(UsCulture),
|
|
outputSizeParam,
|
|
videoSizeParam);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the probe size argument.
|
|
/// </summary>
|
|
/// <param name="state">The state.</param>
|
|
/// <returns>System.String.</returns>
|
|
private string GetProbeSizeArgument(StreamState state)
|
|
{
|
|
if (state.PlayableStreamFileNames.Count > 0)
|
|
{
|
|
return MediaEncoder.GetProbeSizeArgument(state.PlayableStreamFileNames.ToArray(), state.InputProtocol);
|
|
}
|
|
|
|
return MediaEncoder.GetProbeSizeArgument(new[] { state.MediaPath }, state.InputProtocol);
|
|
}
|
|
|
|
/// <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>
|
|
/// <param name="outputAudioCodec">The output audio codec.</param>
|
|
/// <returns>System.Nullable{System.Int32}.</returns>
|
|
private int? GetNumAudioChannelsParam(StreamRequest request, MediaStream audioStream, string outputAudioCodec)
|
|
{
|
|
var inputChannels = audioStream == null
|
|
? null
|
|
: audioStream.Channels;
|
|
|
|
if (inputChannels <= 0)
|
|
{
|
|
inputChannels = null;
|
|
}
|
|
|
|
int? resultChannels = null;
|
|
var codec = outputAudioCodec ?? string.Empty;
|
|
|
|
if (codec.IndexOf("wma", StringComparison.OrdinalIgnoreCase) != -1)
|
|
{
|
|
// wmav2 currently only supports two channel output
|
|
resultChannels = Math.Min(2, inputChannels ?? 2);
|
|
}
|
|
|
|
else if (request.MaxAudioChannels.HasValue)
|
|
{
|
|
var channelLimit = codec.IndexOf("mp3", StringComparison.OrdinalIgnoreCase) != -1
|
|
? 2
|
|
: 6;
|
|
|
|
if (inputChannels.HasValue)
|
|
{
|
|
channelLimit = Math.Min(channelLimit, inputChannels.Value);
|
|
}
|
|
|
|
// If we don't have any media info then limit it to 5 to prevent encoding errors due to asking for too many channels
|
|
resultChannels = Math.Min(request.MaxAudioChannels.Value, channelLimit);
|
|
}
|
|
|
|
if (resultChannels.HasValue && !string.Equals(codec, "copy", StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
if (request.TranscodingMaxAudioChannels.HasValue)
|
|
{
|
|
resultChannels = Math.Min(request.TranscodingMaxAudioChannels.Value, resultChannels.Value);
|
|
}
|
|
}
|
|
|
|
return resultChannels ?? 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)
|
|
{
|
|
var codec = stream.Codec ?? string.Empty;
|
|
|
|
return codec.IndexOf("264", StringComparison.OrdinalIgnoreCase) != -1 ||
|
|
codec.IndexOf("avc", StringComparison.OrdinalIgnoreCase) != -1;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the audio encoder.
|
|
/// </summary>
|
|
/// <param name="state">The state.</param>
|
|
/// <returns>System.String.</returns>
|
|
protected string GetAudioEncoder(StreamState state)
|
|
{
|
|
var codec = state.OutputAudioCodec;
|
|
|
|
if (string.Equals(codec, "aac", StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
return "aac -strict experimental";
|
|
}
|
|
if (string.Equals(codec, "mp3", StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
return "libmp3lame";
|
|
}
|
|
if (string.Equals(codec, "vorbis", StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
return "libvorbis";
|
|
}
|
|
if (string.Equals(codec, "wma", StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
return "wmav2";
|
|
}
|
|
|
|
return codec.ToLower();
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the name of the output video codec
|
|
/// </summary>
|
|
/// <param name="state">The state.</param>
|
|
/// <returns>System.String.</returns>
|
|
protected string GetVideoEncoder(StreamState state)
|
|
{
|
|
var codec = state.OutputVideoCodec;
|
|
|
|
if (!string.IsNullOrEmpty(codec))
|
|
{
|
|
if (string.Equals(codec, "h264", StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
return GetH264Encoder(state);
|
|
}
|
|
if (string.Equals(codec, "vpx", StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
return "libvpx";
|
|
}
|
|
if (string.Equals(codec, "wmv", StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
return "wmv2";
|
|
}
|
|
if (string.Equals(codec, "theora", StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
return "libtheora";
|
|
}
|
|
|
|
return codec.ToLower();
|
|
}
|
|
|
|
return "copy";
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the name of the output video codec
|
|
/// </summary>
|
|
/// <param name="state">The state.</param>
|
|
/// <returns>System.String.</returns>
|
|
protected string GetVideoDecoder(StreamState state)
|
|
{
|
|
if (string.Equals(state.OutputVideoCodec, "copy", StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
return null;
|
|
}
|
|
|
|
// Only use alternative encoders for video files.
|
|
// When using concat with folder rips, if the mfx session fails to initialize, ffmpeg will be stuck retrying and will not exit gracefully
|
|
// Since transcoding of folder rips is expiremental anyway, it's not worth adding additional variables such as this.
|
|
if (state.VideoType != VideoType.VideoFile)
|
|
{
|
|
return null;
|
|
}
|
|
|
|
if (state.VideoStream != null && !string.IsNullOrWhiteSpace(state.VideoStream.Codec))
|
|
{
|
|
if (string.Equals(ApiEntryPoint.Instance.GetEncodingOptions().HardwareAccelerationType, "qsv", StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
switch (state.MediaSource.VideoStream.Codec.ToLower())
|
|
{
|
|
case "avc":
|
|
case "h264":
|
|
if (MediaEncoder.SupportsDecoder("h264_qsv"))
|
|
{
|
|
// Seeing stalls and failures with decoding. Not worth it compared to encoding.
|
|
return "-c:v h264_qsv ";
|
|
}
|
|
break;
|
|
case "mpeg2video":
|
|
if (MediaEncoder.SupportsDecoder("mpeg2_qsv"))
|
|
{
|
|
return "-c:v mpeg2_qsv ";
|
|
}
|
|
break;
|
|
case "vc1":
|
|
if (MediaEncoder.SupportsDecoder("vc1_qsv"))
|
|
{
|
|
return "-c:v vc1_qsv ";
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
// leave blank so ffmpeg will decide
|
|
return null;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the input argument.
|
|
/// </summary>
|
|
/// <param name="state">The state.</param>
|
|
/// <returns>System.String.</returns>
|
|
protected string GetInputArgument(StreamState state)
|
|
{
|
|
var arg = string.Format("-i {0}", GetInputPathArgument(state));
|
|
|
|
if (state.SubtitleStream != null && state.VideoRequest.SubtitleMethod == SubtitleDeliveryMethod.Encode)
|
|
{
|
|
if (state.SubtitleStream.IsExternal && !state.SubtitleStream.IsTextSubtitleStream)
|
|
{
|
|
if (state.VideoStream != null && state.VideoStream.Width.HasValue)
|
|
{
|
|
// This is hacky but not sure how to get the exact subtitle resolution
|
|
double height = state.VideoStream.Width.Value;
|
|
height /= 16;
|
|
height *= 9;
|
|
|
|
arg += string.Format(" -canvas_size {0}:{1}", state.VideoStream.Width.Value.ToString(CultureInfo.InvariantCulture), Convert.ToInt32(height).ToString(CultureInfo.InvariantCulture));
|
|
}
|
|
arg += " -i \"" + state.SubtitleStream.Path + "\"";
|
|
}
|
|
}
|
|
|
|
return arg.Trim();
|
|
}
|
|
|
|
private string GetInputPathArgument(StreamState state)
|
|
{
|
|
var protocol = state.InputProtocol;
|
|
var mediaPath = state.MediaPath ?? string.Empty;
|
|
|
|
var inputPath = new[] { mediaPath };
|
|
|
|
if (state.IsInputVideo)
|
|
{
|
|
if (!(state.VideoType == VideoType.Iso && state.IsoMount == null))
|
|
{
|
|
inputPath = MediaEncoderHelpers.GetInputArgument(FileSystem, mediaPath, state.InputProtocol, state.IsoMount, state.PlayableStreamFileNames);
|
|
}
|
|
}
|
|
|
|
return MediaEncoder.GetInputArgument(inputPath, protocol);
|
|
}
|
|
|
|
private async Task AcquireResources(StreamState state, CancellationTokenSource cancellationTokenSource)
|
|
{
|
|
if (state.VideoType == VideoType.Iso && state.IsoType.HasValue && IsoManager.CanMount(state.MediaPath))
|
|
{
|
|
state.IsoMount = await IsoManager.Mount(state.MediaPath, cancellationTokenSource.Token).ConfigureAwait(false);
|
|
}
|
|
|
|
if (state.MediaSource.RequiresOpening && string.IsNullOrWhiteSpace(state.Request.LiveStreamId))
|
|
{
|
|
var liveStreamResponse = await MediaSourceManager.OpenLiveStream(new LiveStreamRequest
|
|
{
|
|
OpenToken = state.MediaSource.OpenToken
|
|
|
|
}, false, cancellationTokenSource.Token).ConfigureAwait(false);
|
|
|
|
AttachMediaSourceInfo(state, liveStreamResponse.MediaSource, state.VideoRequest, state.RequestedUrl);
|
|
|
|
if (state.VideoRequest != null)
|
|
{
|
|
TryStreamCopy(state, state.VideoRequest);
|
|
}
|
|
}
|
|
|
|
if (state.MediaSource.BufferMs.HasValue)
|
|
{
|
|
await Task.Delay(state.MediaSource.BufferMs.Value, cancellationTokenSource.Token).ConfigureAwait(false);
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Starts the FFMPEG.
|
|
/// </summary>
|
|
/// <param name="state">The state.</param>
|
|
/// <param name="outputPath">The output path.</param>
|
|
/// <param name="cancellationTokenSource">The cancellation token source.</param>
|
|
/// <param name="workingDirectory">The working directory.</param>
|
|
/// <returns>Task.</returns>
|
|
protected async Task<TranscodingJob> StartFfMpeg(StreamState state,
|
|
string outputPath,
|
|
CancellationTokenSource cancellationTokenSource,
|
|
string workingDirectory = null)
|
|
{
|
|
FileSystem.CreateDirectory(Path.GetDirectoryName(outputPath));
|
|
|
|
await AcquireResources(state, cancellationTokenSource).ConfigureAwait(false);
|
|
|
|
if (state.VideoRequest != null && !string.Equals(state.OutputVideoCodec, "copy", StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
var auth = AuthorizationContext.GetAuthorizationInfo(Request);
|
|
if (!string.IsNullOrWhiteSpace(auth.UserId))
|
|
{
|
|
var user = UserManager.GetUserById(auth.UserId);
|
|
if (!user.Policy.EnableVideoPlaybackTranscoding)
|
|
{
|
|
ApiEntryPoint.Instance.OnTranscodeFailedToStart(outputPath, TranscodingJobType, state);
|
|
|
|
throw new ArgumentException("User does not have access to video transcoding");
|
|
}
|
|
}
|
|
}
|
|
|
|
var transcodingId = Guid.NewGuid().ToString("N");
|
|
var commandLineArgs = GetCommandLineArguments(outputPath, state, true);
|
|
|
|
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,
|
|
RedirectStandardInput = true,
|
|
|
|
FileName = MediaEncoder.EncoderPath,
|
|
Arguments = commandLineArgs,
|
|
|
|
WindowStyle = ProcessWindowStyle.Hidden,
|
|
ErrorDialog = false
|
|
},
|
|
|
|
EnableRaisingEvents = true
|
|
};
|
|
|
|
if (!string.IsNullOrWhiteSpace(workingDirectory))
|
|
{
|
|
process.StartInfo.WorkingDirectory = workingDirectory;
|
|
}
|
|
|
|
var transcodingJob = ApiEntryPoint.Instance.OnTranscodeBeginning(outputPath,
|
|
state.Request.PlaySessionId,
|
|
state.MediaSource.LiveStreamId,
|
|
transcodingId,
|
|
TranscodingJobType,
|
|
process,
|
|
state.Request.DeviceId,
|
|
state,
|
|
cancellationTokenSource);
|
|
|
|
var commandLineLogMessage = process.StartInfo.FileName + " " + process.StartInfo.Arguments;
|
|
Logger.Info(commandLineLogMessage);
|
|
|
|
var logFilePrefix = "transcode";
|
|
if (state.VideoRequest != null && string.Equals(state.OutputVideoCodec, "copy", StringComparison.OrdinalIgnoreCase) && string.Equals(state.OutputAudioCodec, "copy", StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
logFilePrefix = "directstream";
|
|
}
|
|
else if (state.VideoRequest != null && string.Equals(state.OutputVideoCodec, "copy", StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
logFilePrefix = "remux";
|
|
}
|
|
|
|
var logFilePath = Path.Combine(ServerConfigurationManager.ApplicationPaths.LogDirectoryPath, logFilePrefix + "-" + Guid.NewGuid() + ".txt");
|
|
FileSystem.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);
|
|
|
|
var commandLineLogMessageBytes = Encoding.UTF8.GetBytes(Request.AbsoluteUri + Environment.NewLine + Environment.NewLine + JsonSerializer.SerializeToString(state.MediaSource) + Environment.NewLine + Environment.NewLine + commandLineLogMessage + Environment.NewLine + Environment.NewLine);
|
|
await state.LogFileStream.WriteAsync(commandLineLogMessageBytes, 0, commandLineLogMessageBytes.Length, cancellationTokenSource.Token).ConfigureAwait(false);
|
|
|
|
process.Exited += (sender, args) => OnFfMpegProcessExited(process, transcodingJob, state);
|
|
|
|
try
|
|
{
|
|
process.Start();
|
|
}
|
|
catch (Exception ex)
|
|
{
|
|
Logger.ErrorException("Error starting ffmpeg", ex);
|
|
|
|
ApiEntryPoint.Instance.OnTranscodeFailedToStart(outputPath, TranscodingJobType, state);
|
|
|
|
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
|
|
var task = Task.Run(() => StartStreamingLog(transcodingJob, state, process.StandardError.BaseStream, state.LogFileStream));
|
|
|
|
// Wait for the file to exist before proceeeding
|
|
while (!FileSystem.FileExists(state.WaitForPath ?? outputPath) && !transcodingJob.HasExited)
|
|
{
|
|
await Task.Delay(100, cancellationTokenSource.Token).ConfigureAwait(false);
|
|
}
|
|
|
|
if (state.IsInputVideo && transcodingJob.Type == TranscodingJobType.Progressive)
|
|
{
|
|
await Task.Delay(1000, cancellationTokenSource.Token).ConfigureAwait(false);
|
|
|
|
if (state.ReadInputAtNativeFramerate)
|
|
{
|
|
await Task.Delay(1500, cancellationTokenSource.Token).ConfigureAwait(false);
|
|
}
|
|
}
|
|
|
|
StartThrottler(state, transcodingJob);
|
|
|
|
return transcodingJob;
|
|
}
|
|
|
|
private void StartThrottler(StreamState state, TranscodingJob transcodingJob)
|
|
{
|
|
if (EnableThrottling(state) && state.InputProtocol == MediaProtocol.File &&
|
|
state.RunTimeTicks.HasValue &&
|
|
state.VideoType == VideoType.VideoFile &&
|
|
!string.Equals(state.OutputVideoCodec, "copy", StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
if (state.RunTimeTicks.Value >= TimeSpan.FromMinutes(5).Ticks && state.IsInputVideo)
|
|
{
|
|
transcodingJob.TranscodingThrottler = state.TranscodingThrottler = new TranscodingThrottler(transcodingJob, Logger, ServerConfigurationManager);
|
|
state.TranscodingThrottler.Start();
|
|
}
|
|
}
|
|
}
|
|
|
|
protected virtual bool EnableThrottling(StreamState state)
|
|
{
|
|
return true;
|
|
}
|
|
|
|
private async Task StartStreamingLog(TranscodingJob transcodingJob, StreamState state, Stream source, Stream target)
|
|
{
|
|
try
|
|
{
|
|
using (var reader = new StreamReader(source))
|
|
{
|
|
while (!reader.EndOfStream)
|
|
{
|
|
var line = await reader.ReadLineAsync().ConfigureAwait(false);
|
|
|
|
ParseLogLine(line, transcodingJob, state);
|
|
|
|
var bytes = Encoding.UTF8.GetBytes(Environment.NewLine + line);
|
|
|
|
await target.WriteAsync(bytes, 0, bytes.Length).ConfigureAwait(false);
|
|
await target.FlushAsync().ConfigureAwait(false);
|
|
}
|
|
}
|
|
}
|
|
catch (ObjectDisposedException)
|
|
{
|
|
// Don't spam the log. This doesn't seem to throw in windows, but sometimes under linux
|
|
}
|
|
catch (Exception ex)
|
|
{
|
|
Logger.ErrorException("Error reading ffmpeg log", ex);
|
|
}
|
|
}
|
|
|
|
private void ParseLogLine(string line, TranscodingJob transcodingJob, StreamState state)
|
|
{
|
|
float? framerate = null;
|
|
double? percent = null;
|
|
TimeSpan? transcodingPosition = null;
|
|
long? bytesTranscoded = null;
|
|
|
|
var parts = line.Split(' ');
|
|
|
|
var totalMs = state.RunTimeTicks.HasValue
|
|
? TimeSpan.FromTicks(state.RunTimeTicks.Value).TotalMilliseconds
|
|
: 0;
|
|
|
|
var startMs = state.Request.StartTimeTicks.HasValue
|
|
? TimeSpan.FromTicks(state.Request.StartTimeTicks.Value).TotalMilliseconds
|
|
: 0;
|
|
|
|
for (var i = 0; i < parts.Length; i++)
|
|
{
|
|
var part = parts[i];
|
|
|
|
if (string.Equals(part, "fps=", StringComparison.OrdinalIgnoreCase) &&
|
|
(i + 1 < parts.Length))
|
|
{
|
|
var rate = parts[i + 1];
|
|
float val;
|
|
|
|
if (float.TryParse(rate, NumberStyles.Any, UsCulture, out val))
|
|
{
|
|
framerate = val;
|
|
}
|
|
}
|
|
else if (state.RunTimeTicks.HasValue &&
|
|
part.StartsWith("time=", StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
var time = part.Split(new[] { '=' }, 2).Last();
|
|
TimeSpan val;
|
|
|
|
if (TimeSpan.TryParse(time, UsCulture, out val))
|
|
{
|
|
var currentMs = startMs + val.TotalMilliseconds;
|
|
|
|
var percentVal = currentMs / totalMs;
|
|
percent = 100 * percentVal;
|
|
|
|
transcodingPosition = val;
|
|
}
|
|
}
|
|
else if (part.StartsWith("size=", StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
var size = part.Split(new[] { '=' }, 2).Last();
|
|
|
|
int? scale = null;
|
|
if (size.IndexOf("kb", StringComparison.OrdinalIgnoreCase) != -1)
|
|
{
|
|
scale = 1024;
|
|
size = size.Replace("kb", string.Empty, StringComparison.OrdinalIgnoreCase);
|
|
}
|
|
|
|
if (scale.HasValue)
|
|
{
|
|
long val;
|
|
|
|
if (long.TryParse(size, NumberStyles.Any, UsCulture, out val))
|
|
{
|
|
bytesTranscoded = val * scale.Value;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (framerate.HasValue || percent.HasValue)
|
|
{
|
|
ApiEntryPoint.Instance.ReportTranscodingProgress(transcodingJob, state, transcodingPosition, framerate, percent, bytesTranscoded);
|
|
}
|
|
}
|
|
|
|
private int? GetVideoBitrateParamValue(VideoStreamRequest request, MediaStream videoStream, string outputVideoCodec)
|
|
{
|
|
var bitrate = request.VideoBitRate;
|
|
|
|
if (videoStream != null)
|
|
{
|
|
var isUpscaling = request.Height.HasValue && videoStream.Height.HasValue &&
|
|
request.Height.Value > videoStream.Height.Value;
|
|
|
|
if (request.Width.HasValue && videoStream.Width.HasValue &&
|
|
request.Width.Value > videoStream.Width.Value)
|
|
{
|
|
isUpscaling = true;
|
|
}
|
|
|
|
// Don't allow bitrate increases unless upscaling
|
|
if (!isUpscaling)
|
|
{
|
|
if (bitrate.HasValue && videoStream.BitRate.HasValue)
|
|
{
|
|
bitrate = Math.Min(bitrate.Value, videoStream.BitRate.Value);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (bitrate.HasValue)
|
|
{
|
|
var inputVideoCodec = videoStream == null ? null : videoStream.Codec;
|
|
bitrate = ResolutionNormalizer.ScaleBitrate(bitrate.Value, inputVideoCodec, outputVideoCodec);
|
|
|
|
// If a max bitrate was requested, don't let the scaled bitrate exceed it
|
|
if (request.VideoBitRate.HasValue)
|
|
{
|
|
bitrate = Math.Min(bitrate.Value, request.VideoBitRate.Value);
|
|
}
|
|
}
|
|
|
|
return bitrate;
|
|
}
|
|
|
|
protected string GetVideoBitrateParam(StreamState state, string videoCodec)
|
|
{
|
|
var bitrate = state.OutputVideoBitrate;
|
|
|
|
if (bitrate.HasValue)
|
|
{
|
|
if (string.Equals(videoCodec, "libvpx", StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
// With vpx when crf is used, b:v becomes a max rate
|
|
// https://trac.ffmpeg.org/wiki/vpxEncodingGuide. But higher bitrate source files -b:v causes judder so limite the bitrate but dont allow it to "saturate" the bitrate. So dont contrain it down just up.
|
|
return string.Format(" -maxrate:v {0} -bufsize:v ({0}*2) -b:v {0}", bitrate.Value.ToString(UsCulture));
|
|
}
|
|
|
|
if (string.Equals(videoCodec, "msmpeg4", StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
return string.Format(" -b:v {0}", bitrate.Value.ToString(UsCulture));
|
|
}
|
|
|
|
// h264
|
|
return string.Format(" -b:v {0} -maxrate {0} -bufsize {1}",
|
|
bitrate.Value.ToString(UsCulture),
|
|
(bitrate.Value * 2).ToString(UsCulture));
|
|
}
|
|
|
|
return string.Empty;
|
|
}
|
|
|
|
private int? GetAudioBitrateParam(StreamRequest request, MediaStream audioStream)
|
|
{
|
|
if (request.AudioBitRate.HasValue)
|
|
{
|
|
// Make sure we don't request a bitrate higher than the source
|
|
var currentBitrate = audioStream == null ? request.AudioBitRate.Value : audioStream.BitRate ?? request.AudioBitRate.Value;
|
|
|
|
return request.AudioBitRate.Value;
|
|
//return Math.Min(currentBitrate, request.AudioBitRate.Value);
|
|
}
|
|
|
|
return null;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the user agent param.
|
|
/// </summary>
|
|
/// <param name="state">The state.</param>
|
|
/// <returns>System.String.</returns>
|
|
private string GetUserAgentParam(StreamState state)
|
|
{
|
|
string useragent = null;
|
|
|
|
state.RemoteHttpHeaders.TryGetValue("User-Agent", out useragent);
|
|
|
|
if (!string.IsNullOrWhiteSpace(useragent))
|
|
{
|
|
return "-user-agent \"" + useragent + "\"";
|
|
}
|
|
|
|
return string.Empty;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Processes the exited.
|
|
/// </summary>
|
|
/// <param name="process">The process.</param>
|
|
/// <param name="job">The job.</param>
|
|
/// <param name="state">The state.</param>
|
|
private void OnFfMpegProcessExited(Process process, TranscodingJob job, StreamState state)
|
|
{
|
|
if (job != null)
|
|
{
|
|
job.HasExited = true;
|
|
}
|
|
|
|
Logger.Debug("Disposing stream resources");
|
|
state.Dispose();
|
|
|
|
try
|
|
{
|
|
Logger.Info("FFMpeg exited with code {0}", process.ExitCode);
|
|
}
|
|
catch
|
|
{
|
|
Logger.Error("FFMpeg exited with an error.");
|
|
}
|
|
|
|
// This causes on exited to be called twice:
|
|
//try
|
|
//{
|
|
// // Dispose the process
|
|
// process.Dispose();
|
|
//}
|
|
//catch (Exception ex)
|
|
//{
|
|
// Logger.ErrorException("Error disposing ffmpeg.", ex);
|
|
//}
|
|
}
|
|
|
|
protected double? GetFramerateParam(StreamState state)
|
|
{
|
|
if (state.VideoRequest != null)
|
|
{
|
|
if (state.VideoRequest.Framerate.HasValue)
|
|
{
|
|
return state.VideoRequest.Framerate.Value;
|
|
}
|
|
|
|
var maxrate = state.VideoRequest.MaxFramerate;
|
|
|
|
if (maxrate.HasValue && state.VideoStream != null)
|
|
{
|
|
var contentRate = state.VideoStream.AverageFrameRate ?? state.VideoStream.RealFrameRate;
|
|
|
|
if (contentRate.HasValue && contentRate.Value > maxrate.Value)
|
|
{
|
|
return maxrate;
|
|
}
|
|
}
|
|
}
|
|
|
|
return null;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Parses the parameters.
|
|
/// </summary>
|
|
/// <param name="request">The request.</param>
|
|
private void ParseParams(StreamRequest request)
|
|
{
|
|
var vals = request.Params.Split(';');
|
|
|
|
var videoRequest = request as VideoStreamRequest;
|
|
|
|
for (var i = 0; i < vals.Length; i++)
|
|
{
|
|
var val = vals[i];
|
|
|
|
if (string.IsNullOrWhiteSpace(val))
|
|
{
|
|
continue;
|
|
}
|
|
|
|
if (i == 0)
|
|
{
|
|
request.DeviceProfileId = val;
|
|
}
|
|
else if (i == 1)
|
|
{
|
|
request.DeviceId = val;
|
|
}
|
|
else if (i == 2)
|
|
{
|
|
request.MediaSourceId = val;
|
|
}
|
|
else if (i == 3)
|
|
{
|
|
request.Static = string.Equals("true", val, StringComparison.OrdinalIgnoreCase);
|
|
}
|
|
else if (i == 4)
|
|
{
|
|
if (videoRequest != null)
|
|
{
|
|
videoRequest.VideoCodec = val;
|
|
}
|
|
}
|
|
else if (i == 5)
|
|
{
|
|
request.AudioCodec = val;
|
|
}
|
|
else if (i == 6)
|
|
{
|
|
if (videoRequest != null)
|
|
{
|
|
videoRequest.AudioStreamIndex = int.Parse(val, UsCulture);
|
|
}
|
|
}
|
|
else if (i == 7)
|
|
{
|
|
if (videoRequest != null)
|
|
{
|
|
videoRequest.SubtitleStreamIndex = int.Parse(val, UsCulture);
|
|
}
|
|
}
|
|
else if (i == 8)
|
|
{
|
|
if (videoRequest != null)
|
|
{
|
|
videoRequest.VideoBitRate = int.Parse(val, UsCulture);
|
|
}
|
|
}
|
|
else if (i == 9)
|
|
{
|
|
request.AudioBitRate = int.Parse(val, UsCulture);
|
|
}
|
|
else if (i == 10)
|
|
{
|
|
request.MaxAudioChannels = int.Parse(val, UsCulture);
|
|
}
|
|
else if (i == 11)
|
|
{
|
|
if (videoRequest != null)
|
|
{
|
|
videoRequest.MaxFramerate = float.Parse(val, UsCulture);
|
|
}
|
|
}
|
|
else if (i == 12)
|
|
{
|
|
if (videoRequest != null)
|
|
{
|
|
videoRequest.MaxWidth = int.Parse(val, UsCulture);
|
|
}
|
|
}
|
|
else if (i == 13)
|
|
{
|
|
if (videoRequest != null)
|
|
{
|
|
videoRequest.MaxHeight = int.Parse(val, UsCulture);
|
|
}
|
|
}
|
|
else if (i == 14)
|
|
{
|
|
request.StartTimeTicks = long.Parse(val, UsCulture);
|
|
}
|
|
else if (i == 15)
|
|
{
|
|
if (videoRequest != null)
|
|
{
|
|
videoRequest.Level = val;
|
|
}
|
|
}
|
|
else if (i == 16)
|
|
{
|
|
if (videoRequest != null)
|
|
{
|
|
videoRequest.MaxRefFrames = int.Parse(val, UsCulture);
|
|
}
|
|
}
|
|
else if (i == 17)
|
|
{
|
|
if (videoRequest != null)
|
|
{
|
|
videoRequest.MaxVideoBitDepth = int.Parse(val, UsCulture);
|
|
}
|
|
}
|
|
else if (i == 18)
|
|
{
|
|
if (videoRequest != null)
|
|
{
|
|
videoRequest.Profile = val;
|
|
}
|
|
}
|
|
else if (i == 19)
|
|
{
|
|
// cabac no longer used
|
|
}
|
|
else if (i == 20)
|
|
{
|
|
request.PlaySessionId = val;
|
|
}
|
|
else if (i == 21)
|
|
{
|
|
// api_key
|
|
}
|
|
else if (i == 22)
|
|
{
|
|
request.LiveStreamId = val;
|
|
}
|
|
else if (i == 23)
|
|
{
|
|
// Duplicating ItemId because of MediaMonkey
|
|
}
|
|
else if (i == 24)
|
|
{
|
|
if (videoRequest != null)
|
|
{
|
|
videoRequest.CopyTimestamps = string.Equals("true", val, StringComparison.OrdinalIgnoreCase);
|
|
}
|
|
}
|
|
else if (i == 25)
|
|
{
|
|
if (videoRequest != null)
|
|
{
|
|
videoRequest.ForceLiveStream = string.Equals("true", val, StringComparison.OrdinalIgnoreCase);
|
|
}
|
|
}
|
|
else if (i == 26)
|
|
{
|
|
if (!string.IsNullOrWhiteSpace(val) && videoRequest != null)
|
|
{
|
|
SubtitleDeliveryMethod method;
|
|
if (Enum.TryParse(val, out method))
|
|
{
|
|
videoRequest.SubtitleMethod = method;
|
|
}
|
|
}
|
|
}
|
|
else if (i == 27)
|
|
{
|
|
request.TranscodingMaxAudioChannels = int.Parse(val, UsCulture);
|
|
}
|
|
else if (i == 28)
|
|
{
|
|
if (videoRequest != null)
|
|
{
|
|
videoRequest.EnableSubtitlesInManifest = string.Equals("true", val, StringComparison.OrdinalIgnoreCase);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Parses the dlna headers.
|
|
/// </summary>
|
|
/// <param name="request">The request.</param>
|
|
private void ParseDlnaHeaders(StreamRequest request)
|
|
{
|
|
if (!request.StartTimeTicks.HasValue)
|
|
{
|
|
var timeSeek = GetHeader("TimeSeekRange.dlna.org");
|
|
|
|
request.StartTimeTicks = ParseTimeSeekHeader(timeSeek);
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Parses the time seek header.
|
|
/// </summary>
|
|
private long? ParseTimeSeekHeader(string value)
|
|
{
|
|
if (string.IsNullOrWhiteSpace(value))
|
|
{
|
|
return null;
|
|
}
|
|
|
|
if (value.IndexOf("npt=", StringComparison.OrdinalIgnoreCase) != 0)
|
|
{
|
|
throw new ArgumentException("Invalid timeseek header");
|
|
}
|
|
value = value.Substring(4).Split(new[] { '-' }, 2)[0];
|
|
|
|
if (value.IndexOf(':') == -1)
|
|
{
|
|
// Parses npt times in the format of '417.33'
|
|
double seconds;
|
|
if (double.TryParse(value, NumberStyles.Any, UsCulture, out seconds))
|
|
{
|
|
return TimeSpan.FromSeconds(seconds).Ticks;
|
|
}
|
|
|
|
throw new ArgumentException("Invalid timeseek header");
|
|
}
|
|
|
|
// Parses npt times in the format of '10:19:25.7'
|
|
var tokens = value.Split(new[] { ':' }, 3);
|
|
double secondsSum = 0;
|
|
var timeFactor = 3600;
|
|
|
|
foreach (var time in tokens)
|
|
{
|
|
double digit;
|
|
if (double.TryParse(time, NumberStyles.Any, UsCulture, out digit))
|
|
{
|
|
secondsSum += digit * timeFactor;
|
|
}
|
|
else
|
|
{
|
|
throw new ArgumentException("Invalid timeseek header");
|
|
}
|
|
timeFactor /= 60;
|
|
}
|
|
return TimeSpan.FromSeconds(secondsSum).Ticks;
|
|
}
|
|
|
|
/// <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)
|
|
{
|
|
ParseDlnaHeaders(request);
|
|
|
|
if (!string.IsNullOrWhiteSpace(request.Params))
|
|
{
|
|
ParseParams(request);
|
|
}
|
|
|
|
var url = Request.PathInfo;
|
|
|
|
if (string.IsNullOrEmpty(request.AudioCodec))
|
|
{
|
|
request.AudioCodec = InferAudioCodec(url);
|
|
}
|
|
|
|
var state = new StreamState(MediaSourceManager, Logger)
|
|
{
|
|
Request = request,
|
|
RequestedUrl = url,
|
|
UserAgent = Request.UserAgent
|
|
};
|
|
|
|
//if ((Request.UserAgent ?? string.Empty).IndexOf("iphone", StringComparison.OrdinalIgnoreCase) != -1 ||
|
|
// (Request.UserAgent ?? string.Empty).IndexOf("ipad", StringComparison.OrdinalIgnoreCase) != -1 ||
|
|
// (Request.UserAgent ?? string.Empty).IndexOf("ipod", StringComparison.OrdinalIgnoreCase) != -1)
|
|
//{
|
|
// state.SegmentLength = 6;
|
|
//}
|
|
|
|
if (!string.IsNullOrWhiteSpace(request.AudioCodec))
|
|
{
|
|
state.SupportedAudioCodecs = request.AudioCodec.Split(',').Where(i => !string.IsNullOrWhiteSpace(i)).ToList();
|
|
state.Request.AudioCodec = state.SupportedAudioCodecs.FirstOrDefault(i => MediaEncoder.CanEncodeToAudioCodec(i))
|
|
?? state.SupportedAudioCodecs.FirstOrDefault();
|
|
}
|
|
|
|
var item = LibraryManager.GetItemById(request.Id);
|
|
|
|
state.IsInputVideo = string.Equals(item.MediaType, MediaType.Video, StringComparison.OrdinalIgnoreCase);
|
|
|
|
var archivable = item as IArchivable;
|
|
state.IsInputArchive = archivable != null && archivable.IsArchive;
|
|
|
|
MediaSourceInfo mediaSource;
|
|
if (string.IsNullOrWhiteSpace(request.LiveStreamId))
|
|
{
|
|
var mediaSources = (await MediaSourceManager.GetPlayackMediaSources(request.Id, null, false, new[] { MediaType.Audio, MediaType.Video }, cancellationToken).ConfigureAwait(false)).ToList();
|
|
|
|
mediaSource = string.IsNullOrEmpty(request.MediaSourceId)
|
|
? mediaSources.First()
|
|
: mediaSources.FirstOrDefault(i => string.Equals(i.Id, request.MediaSourceId));
|
|
|
|
if (mediaSource == null && string.Equals(request.Id, request.MediaSourceId, StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
mediaSource = mediaSources.First();
|
|
}
|
|
}
|
|
else
|
|
{
|
|
mediaSource = await MediaSourceManager.GetLiveStream(request.LiveStreamId, cancellationToken).ConfigureAwait(false);
|
|
}
|
|
|
|
var videoRequest = request as VideoStreamRequest;
|
|
|
|
AttachMediaSourceInfo(state, mediaSource, videoRequest, url);
|
|
|
|
var container = Path.GetExtension(state.RequestedUrl);
|
|
|
|
if (string.IsNullOrEmpty(container))
|
|
{
|
|
container = request.Static ?
|
|
state.InputContainer :
|
|
(Path.GetExtension(GetOutputFilePath(state)) ?? string.Empty).TrimStart('.');
|
|
}
|
|
|
|
state.OutputContainer = (container ?? string.Empty).TrimStart('.');
|
|
|
|
state.OutputAudioBitrate = GetAudioBitrateParam(state.Request, state.AudioStream);
|
|
state.OutputAudioSampleRate = request.AudioSampleRate;
|
|
|
|
state.OutputAudioCodec = state.Request.AudioCodec;
|
|
|
|
state.OutputAudioChannels = GetNumAudioChannelsParam(state.Request, state.AudioStream, state.OutputAudioCodec);
|
|
|
|
if (videoRequest != null)
|
|
{
|
|
state.OutputVideoCodec = state.VideoRequest.VideoCodec;
|
|
state.OutputVideoBitrate = GetVideoBitrateParamValue(state.VideoRequest, state.VideoStream, state.OutputVideoCodec);
|
|
|
|
if (state.OutputVideoBitrate.HasValue)
|
|
{
|
|
var resolution = ResolutionNormalizer.Normalize(
|
|
state.VideoStream == null ? (int?)null : state.VideoStream.BitRate,
|
|
state.OutputVideoBitrate.Value,
|
|
state.VideoStream == null ? null : state.VideoStream.Codec,
|
|
state.OutputVideoCodec,
|
|
videoRequest.MaxWidth,
|
|
videoRequest.MaxHeight);
|
|
|
|
videoRequest.MaxWidth = resolution.MaxWidth;
|
|
videoRequest.MaxHeight = resolution.MaxHeight;
|
|
}
|
|
}
|
|
|
|
ApplyDeviceProfileSettings(state);
|
|
|
|
if (videoRequest != null)
|
|
{
|
|
TryStreamCopy(state, videoRequest);
|
|
}
|
|
|
|
state.OutputFilePath = GetOutputFilePath(state);
|
|
|
|
return state;
|
|
}
|
|
|
|
private void TryStreamCopy(StreamState state, VideoStreamRequest videoRequest)
|
|
{
|
|
if (state.VideoStream != null && CanStreamCopyVideo(state))
|
|
{
|
|
state.OutputVideoCodec = "copy";
|
|
}
|
|
else
|
|
{
|
|
// If the user doesn't have access to transcoding, then force stream copy, regardless of whether it will be compatible or not
|
|
var auth = AuthorizationContext.GetAuthorizationInfo(Request);
|
|
if (!string.IsNullOrWhiteSpace(auth.UserId))
|
|
{
|
|
var user = UserManager.GetUserById(auth.UserId);
|
|
if (!user.Policy.EnableVideoPlaybackTranscoding)
|
|
{
|
|
state.OutputVideoCodec = "copy";
|
|
}
|
|
}
|
|
}
|
|
|
|
if (state.AudioStream != null && CanStreamCopyAudio(state, state.SupportedAudioCodecs))
|
|
{
|
|
state.OutputAudioCodec = "copy";
|
|
}
|
|
else
|
|
{
|
|
// If the user doesn't have access to transcoding, then force stream copy, regardless of whether it will be compatible or not
|
|
var auth = AuthorizationContext.GetAuthorizationInfo(Request);
|
|
if (!string.IsNullOrWhiteSpace(auth.UserId))
|
|
{
|
|
var user = UserManager.GetUserById(auth.UserId);
|
|
if (!user.Policy.EnableAudioPlaybackTranscoding)
|
|
{
|
|
state.OutputAudioCodec = "copy";
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
private void AttachMediaSourceInfo(StreamState state,
|
|
MediaSourceInfo mediaSource,
|
|
VideoStreamRequest videoRequest,
|
|
string requestedUrl)
|
|
{
|
|
state.MediaPath = mediaSource.Path;
|
|
state.InputProtocol = mediaSource.Protocol;
|
|
state.InputContainer = mediaSource.Container;
|
|
state.InputFileSize = mediaSource.Size;
|
|
state.InputBitrate = mediaSource.Bitrate;
|
|
state.RunTimeTicks = mediaSource.RunTimeTicks;
|
|
state.RemoteHttpHeaders = mediaSource.RequiredHttpHeaders;
|
|
|
|
if (mediaSource.VideoType.HasValue)
|
|
{
|
|
state.VideoType = mediaSource.VideoType.Value;
|
|
}
|
|
|
|
state.IsoType = mediaSource.IsoType;
|
|
|
|
state.PlayableStreamFileNames = mediaSource.PlayableStreamFileNames.ToList();
|
|
|
|
if (mediaSource.Timestamp.HasValue)
|
|
{
|
|
state.InputTimestamp = mediaSource.Timestamp.Value;
|
|
}
|
|
|
|
state.InputProtocol = mediaSource.Protocol;
|
|
state.MediaPath = mediaSource.Path;
|
|
state.RunTimeTicks = mediaSource.RunTimeTicks;
|
|
state.RemoteHttpHeaders = mediaSource.RequiredHttpHeaders;
|
|
state.InputBitrate = mediaSource.Bitrate;
|
|
state.InputFileSize = mediaSource.Size;
|
|
state.ReadInputAtNativeFramerate = mediaSource.ReadAtNativeFramerate;
|
|
|
|
if (state.ReadInputAtNativeFramerate ||
|
|
mediaSource.Protocol == MediaProtocol.File && string.Equals(mediaSource.Container, "wtv", StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
state.OutputAudioSync = "1000";
|
|
state.InputVideoSync = "-1";
|
|
state.InputAudioSync = "1";
|
|
}
|
|
|
|
if (string.Equals(mediaSource.Container, "wma", StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
// Seeing some stuttering when transcoding wma to audio-only HLS
|
|
state.InputAudioSync = "1";
|
|
}
|
|
|
|
var mediaStreams = mediaSource.MediaStreams;
|
|
|
|
if (videoRequest != null)
|
|
{
|
|
if (string.IsNullOrEmpty(videoRequest.VideoCodec))
|
|
{
|
|
videoRequest.VideoCodec = InferVideoCodec(requestedUrl);
|
|
}
|
|
|
|
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);
|
|
|
|
if (state.SubtitleStream != null && !state.SubtitleStream.IsExternal)
|
|
{
|
|
state.InternalSubtitleStreamOffset = mediaStreams.Where(i => i.Type == MediaStreamType.Subtitle && !i.IsExternal).ToList().IndexOf(state.SubtitleStream);
|
|
}
|
|
|
|
if (state.VideoStream != null && state.VideoStream.IsInterlaced)
|
|
{
|
|
state.DeInterlace = true;
|
|
}
|
|
|
|
EnforceResolutionLimit(state, videoRequest);
|
|
}
|
|
else
|
|
{
|
|
state.AudioStream = GetMediaStream(mediaStreams, null, MediaStreamType.Audio, true);
|
|
}
|
|
|
|
state.MediaSource = mediaSource;
|
|
}
|
|
|
|
protected virtual bool CanStreamCopyVideo(StreamState state)
|
|
{
|
|
var request = state.VideoRequest;
|
|
var videoStream = state.VideoStream;
|
|
|
|
if (videoStream.IsInterlaced)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
if (videoStream.IsAnamorphic ?? false)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
// Can't stream copy if we're burning in subtitles
|
|
if (request.SubtitleStreamIndex.HasValue)
|
|
{
|
|
if (request.SubtitleMethod == SubtitleDeliveryMethod.Encode)
|
|
{
|
|
return false;
|
|
}
|
|
}
|
|
|
|
if (string.Equals("h264", videoStream.Codec, StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
if (videoStream.IsAVC.HasValue && !videoStream.IsAVC.Value)
|
|
{
|
|
Logger.Debug("Cannot stream copy video. Stream is marked as not AVC");
|
|
return false;
|
|
}
|
|
}
|
|
|
|
// Source and target codecs must match
|
|
if (!string.Equals(request.VideoCodec, videoStream.Codec, StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
// If client is requesting a specific video profile, it must match the source
|
|
if (!string.IsNullOrEmpty(request.Profile))
|
|
{
|
|
if (string.IsNullOrEmpty(videoStream.Profile))
|
|
{
|
|
//return false;
|
|
}
|
|
|
|
if (!string.IsNullOrEmpty(videoStream.Profile) && !string.Equals(request.Profile, videoStream.Profile, StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
var currentScore = GetVideoProfileScore(videoStream.Profile);
|
|
var requestedScore = GetVideoProfileScore(request.Profile);
|
|
|
|
if (currentScore == -1 || currentScore > requestedScore)
|
|
{
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Video width must fall within requested value
|
|
if (request.MaxWidth.HasValue)
|
|
{
|
|
if (!videoStream.Width.HasValue || videoStream.Width.Value > request.MaxWidth.Value)
|
|
{
|
|
return false;
|
|
}
|
|
}
|
|
|
|
// Video height must fall within requested value
|
|
if (request.MaxHeight.HasValue)
|
|
{
|
|
if (!videoStream.Height.HasValue || videoStream.Height.Value > request.MaxHeight.Value)
|
|
{
|
|
return false;
|
|
}
|
|
}
|
|
|
|
// Video framerate must fall within requested value
|
|
var requestedFramerate = request.MaxFramerate ?? request.Framerate;
|
|
if (requestedFramerate.HasValue)
|
|
{
|
|
var videoFrameRate = videoStream.AverageFrameRate ?? videoStream.RealFrameRate;
|
|
|
|
if (!videoFrameRate.HasValue || videoFrameRate.Value > requestedFramerate.Value)
|
|
{
|
|
return false;
|
|
}
|
|
}
|
|
|
|
// Video bitrate must fall within requested value
|
|
if (request.VideoBitRate.HasValue)
|
|
{
|
|
if (!videoStream.BitRate.HasValue || videoStream.BitRate.Value > request.VideoBitRate.Value)
|
|
{
|
|
return false;
|
|
}
|
|
}
|
|
|
|
if (request.MaxVideoBitDepth.HasValue)
|
|
{
|
|
if (videoStream.BitDepth.HasValue && videoStream.BitDepth.Value > request.MaxVideoBitDepth.Value)
|
|
{
|
|
return false;
|
|
}
|
|
}
|
|
|
|
if (request.MaxRefFrames.HasValue)
|
|
{
|
|
if (videoStream.RefFrames.HasValue && videoStream.RefFrames.Value > request.MaxRefFrames.Value)
|
|
{
|
|
return false;
|
|
}
|
|
}
|
|
|
|
// If a specific level was requested, the source must match or be less than
|
|
if (!string.IsNullOrEmpty(request.Level))
|
|
{
|
|
double requestLevel;
|
|
|
|
if (double.TryParse(request.Level, NumberStyles.Any, UsCulture, out requestLevel))
|
|
{
|
|
if (!videoStream.Level.HasValue)
|
|
{
|
|
//return false;
|
|
}
|
|
|
|
if (videoStream.Level.HasValue && videoStream.Level.Value > requestLevel)
|
|
{
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
|
|
return request.EnableAutoStreamCopy;
|
|
}
|
|
|
|
private int GetVideoProfileScore(string profile)
|
|
{
|
|
var list = new List<string>
|
|
{
|
|
"Constrained Baseline",
|
|
"Baseline",
|
|
"Extended",
|
|
"Main",
|
|
"High",
|
|
"Progressive High",
|
|
"Constrained High"
|
|
};
|
|
|
|
return Array.FindIndex(list.ToArray(), t => string.Equals(t, profile, StringComparison.OrdinalIgnoreCase));
|
|
}
|
|
|
|
protected virtual bool CanStreamCopyAudio(StreamState state, List<string> supportedAudioCodecs)
|
|
{
|
|
var request = state.VideoRequest;
|
|
var audioStream = state.AudioStream;
|
|
|
|
// Source and target codecs must match
|
|
if (string.IsNullOrEmpty(audioStream.Codec) || !supportedAudioCodecs.Contains(audioStream.Codec, StringComparer.OrdinalIgnoreCase))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
// Video bitrate must fall within requested value
|
|
if (request.AudioBitRate.HasValue)
|
|
{
|
|
if (!audioStream.BitRate.HasValue || audioStream.BitRate.Value <= 0)
|
|
{
|
|
return false;
|
|
}
|
|
if (audioStream.BitRate.Value > request.AudioBitRate.Value)
|
|
{
|
|
return false;
|
|
}
|
|
}
|
|
|
|
// Channels must fall within requested value
|
|
var channels = request.AudioChannels ?? request.MaxAudioChannels;
|
|
if (channels.HasValue)
|
|
{
|
|
if (!audioStream.Channels.HasValue || audioStream.Channels.Value <= 0)
|
|
{
|
|
return false;
|
|
}
|
|
if (audioStream.Channels.Value > channels.Value)
|
|
{
|
|
return false;
|
|
}
|
|
}
|
|
|
|
// Sample rate must fall within requested value
|
|
if (request.AudioSampleRate.HasValue)
|
|
{
|
|
if (!audioStream.SampleRate.HasValue || audioStream.SampleRate.Value <= 0)
|
|
{
|
|
return false;
|
|
}
|
|
if (audioStream.SampleRate.Value > request.AudioSampleRate.Value)
|
|
{
|
|
return false;
|
|
}
|
|
}
|
|
|
|
return request.EnableAutoStreamCopy;
|
|
}
|
|
|
|
private void ApplyDeviceProfileSettings(StreamState state)
|
|
{
|
|
var headers = new Dictionary<string, string>();
|
|
foreach (var key in Request.Headers.AllKeys)
|
|
{
|
|
headers[key] = Request.Headers[key];
|
|
}
|
|
|
|
if (!string.IsNullOrWhiteSpace(state.Request.DeviceProfileId))
|
|
{
|
|
state.DeviceProfile = DlnaManager.GetProfile(state.Request.DeviceProfileId);
|
|
}
|
|
else
|
|
{
|
|
if (!string.IsNullOrWhiteSpace(state.Request.DeviceId))
|
|
{
|
|
var caps = DeviceManager.GetCapabilities(state.Request.DeviceId);
|
|
|
|
if (caps != null)
|
|
{
|
|
state.DeviceProfile = caps.DeviceProfile;
|
|
}
|
|
else
|
|
{
|
|
state.DeviceProfile = DlnaManager.GetProfile(headers);
|
|
}
|
|
}
|
|
}
|
|
|
|
var profile = state.DeviceProfile;
|
|
|
|
if (profile == null)
|
|
{
|
|
// Don't use settings from the default profile.
|
|
// Only use a specific profile if it was requested.
|
|
return;
|
|
}
|
|
|
|
var audioCodec = state.ActualOutputAudioCodec;
|
|
var videoCodec = state.ActualOutputVideoCodec;
|
|
|
|
var mediaProfile = state.VideoRequest == null ?
|
|
profile.GetAudioMediaProfile(state.OutputContainer, audioCodec, state.OutputAudioChannels, state.OutputAudioBitrate) :
|
|
profile.GetVideoMediaProfile(state.OutputContainer,
|
|
audioCodec,
|
|
videoCodec,
|
|
state.OutputWidth,
|
|
state.OutputHeight,
|
|
state.TargetVideoBitDepth,
|
|
state.OutputVideoBitrate,
|
|
state.TargetVideoProfile,
|
|
state.TargetVideoLevel,
|
|
state.TargetFramerate,
|
|
state.TargetPacketLength,
|
|
state.TargetTimestamp,
|
|
state.IsTargetAnamorphic,
|
|
state.TargetRefFrames,
|
|
state.TargetVideoStreamCount,
|
|
state.TargetAudioStreamCount,
|
|
state.TargetVideoCodecTag);
|
|
|
|
if (mediaProfile != null)
|
|
{
|
|
state.MimeType = mediaProfile.MimeType;
|
|
}
|
|
|
|
if (!state.Request.Static)
|
|
{
|
|
var transcodingProfile = state.VideoRequest == null ?
|
|
profile.GetAudioTranscodingProfile(state.OutputContainer, audioCodec) :
|
|
profile.GetVideoTranscodingProfile(state.OutputContainer, audioCodec, videoCodec);
|
|
|
|
if (transcodingProfile != null)
|
|
{
|
|
state.EstimateContentLength = transcodingProfile.EstimateContentLength;
|
|
state.EnableMpegtsM2TsMode = transcodingProfile.EnableMpegtsM2TsMode;
|
|
state.TranscodeSeekInfo = transcodingProfile.TranscodeSeekInfo;
|
|
|
|
if (state.VideoRequest != null)
|
|
{
|
|
state.VideoRequest.CopyTimestamps = transcodingProfile.CopyTimestamps;
|
|
state.VideoRequest.ForceLiveStream = transcodingProfile.ForceLiveStream;
|
|
state.VideoRequest.EnableSubtitlesInManifest = transcodingProfile.EnableSubtitlesInManifest;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Adds the dlna headers.
|
|
/// </summary>
|
|
/// <param name="state">The state.</param>
|
|
/// <param name="responseHeaders">The response headers.</param>
|
|
/// <param name="isStaticallyStreamed">if set to <c>true</c> [is statically streamed].</param>
|
|
/// <returns><c>true</c> if XXXX, <c>false</c> otherwise</returns>
|
|
protected void AddDlnaHeaders(StreamState state, IDictionary<string, string> responseHeaders, bool isStaticallyStreamed)
|
|
{
|
|
var profile = state.DeviceProfile;
|
|
|
|
var transferMode = GetHeader("transferMode.dlna.org");
|
|
responseHeaders["transferMode.dlna.org"] = string.IsNullOrEmpty(transferMode) ? "Streaming" : transferMode;
|
|
responseHeaders["realTimeInfo.dlna.org"] = "DLNA.ORG_TLAG=*";
|
|
|
|
if (string.Equals(GetHeader("getMediaInfo.sec"), "1", StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
if (state.RunTimeTicks.HasValue)
|
|
{
|
|
var ms = TimeSpan.FromTicks(state.RunTimeTicks.Value).TotalMilliseconds;
|
|
responseHeaders["MediaInfo.sec"] = string.Format("SEC_Duration={0};", Convert.ToInt32(ms).ToString(CultureInfo.InvariantCulture));
|
|
}
|
|
}
|
|
|
|
if (state.RunTimeTicks.HasValue && !isStaticallyStreamed && profile != null)
|
|
{
|
|
AddTimeSeekResponseHeaders(state, responseHeaders);
|
|
}
|
|
|
|
if (profile == null)
|
|
{
|
|
profile = DlnaManager.GetDefaultProfile();
|
|
}
|
|
|
|
var audioCodec = state.ActualOutputAudioCodec;
|
|
|
|
if (state.VideoRequest == null)
|
|
{
|
|
responseHeaders["contentFeatures.dlna.org"] = new ContentFeatureBuilder(profile)
|
|
.BuildAudioHeader(
|
|
state.OutputContainer,
|
|
audioCodec,
|
|
state.OutputAudioBitrate,
|
|
state.OutputAudioSampleRate,
|
|
state.OutputAudioChannels,
|
|
isStaticallyStreamed,
|
|
state.RunTimeTicks,
|
|
state.TranscodeSeekInfo
|
|
);
|
|
}
|
|
else
|
|
{
|
|
var videoCodec = state.ActualOutputVideoCodec;
|
|
|
|
responseHeaders["contentFeatures.dlna.org"] = new ContentFeatureBuilder(profile)
|
|
.BuildVideoHeader(
|
|
state.OutputContainer,
|
|
videoCodec,
|
|
audioCodec,
|
|
state.OutputWidth,
|
|
state.OutputHeight,
|
|
state.TargetVideoBitDepth,
|
|
state.OutputVideoBitrate,
|
|
state.TargetTimestamp,
|
|
isStaticallyStreamed,
|
|
state.RunTimeTicks,
|
|
state.TargetVideoProfile,
|
|
state.TargetVideoLevel,
|
|
state.TargetFramerate,
|
|
state.TargetPacketLength,
|
|
state.TranscodeSeekInfo,
|
|
state.IsTargetAnamorphic,
|
|
state.TargetRefFrames,
|
|
state.TargetVideoStreamCount,
|
|
state.TargetAudioStreamCount,
|
|
state.TargetVideoCodecTag
|
|
|
|
).FirstOrDefault() ?? string.Empty;
|
|
}
|
|
|
|
foreach (var item in responseHeaders)
|
|
{
|
|
Request.Response.AddHeader(item.Key, item.Value);
|
|
}
|
|
}
|
|
|
|
private void AddTimeSeekResponseHeaders(StreamState state, IDictionary<string, string> responseHeaders)
|
|
{
|
|
var runtimeSeconds = TimeSpan.FromTicks(state.RunTimeTicks.Value).TotalSeconds.ToString(UsCulture);
|
|
var startSeconds = TimeSpan.FromTicks(state.Request.StartTimeTicks ?? 0).TotalSeconds.ToString(UsCulture);
|
|
|
|
responseHeaders["TimeSeekRange.dlna.org"] = string.Format("npt={0}-{1}/{1}", startSeconds, runtimeSeconds);
|
|
responseHeaders["X-AvailableSeekRange"] = string.Format("1 npt={0}-{1}", startSeconds, runtimeSeconds);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Enforces the resolution limit.
|
|
/// </summary>
|
|
/// <param name="state">The state.</param>
|
|
/// <param name="videoRequest">The video request.</param>
|
|
private void EnforceResolutionLimit(StreamState state, VideoStreamRequest videoRequest)
|
|
{
|
|
// Switch the incoming params to be ceilings rather than fixed values
|
|
videoRequest.MaxWidth = videoRequest.MaxWidth ?? videoRequest.Width;
|
|
videoRequest.MaxHeight = videoRequest.MaxHeight ?? videoRequest.Height;
|
|
|
|
videoRequest.Width = null;
|
|
videoRequest.Height = null;
|
|
}
|
|
|
|
protected string GetInputModifier(StreamState state, bool genPts = true)
|
|
{
|
|
var inputModifier = string.Empty;
|
|
|
|
var probeSize = GetProbeSizeArgument(state);
|
|
inputModifier += " " + probeSize;
|
|
inputModifier = inputModifier.Trim();
|
|
|
|
var userAgentParam = GetUserAgentParam(state);
|
|
|
|
if (!string.IsNullOrWhiteSpace(userAgentParam))
|
|
{
|
|
inputModifier += " " + userAgentParam;
|
|
}
|
|
|
|
inputModifier = inputModifier.Trim();
|
|
|
|
inputModifier += " " + GetFastSeekCommandLineParameter(state.Request);
|
|
inputModifier = inputModifier.Trim();
|
|
|
|
if (state.VideoRequest != null && genPts)
|
|
{
|
|
inputModifier += " -fflags +genpts";
|
|
}
|
|
|
|
if (!string.IsNullOrEmpty(state.InputAudioSync))
|
|
{
|
|
inputModifier += " -async " + state.InputAudioSync;
|
|
}
|
|
|
|
if (!string.IsNullOrEmpty(state.InputVideoSync))
|
|
{
|
|
inputModifier += " -vsync " + state.InputVideoSync;
|
|
}
|
|
|
|
if (state.ReadInputAtNativeFramerate)
|
|
{
|
|
inputModifier += " -re";
|
|
}
|
|
|
|
var videoDecoder = GetVideoDecoder(state);
|
|
if (!string.IsNullOrWhiteSpace(videoDecoder))
|
|
{
|
|
inputModifier += " " + videoDecoder;
|
|
}
|
|
|
|
if (state.VideoRequest != null)
|
|
{
|
|
// Important: If this is ever re-enabled, make sure not to use it with wtv because it breaks seeking
|
|
if (string.Equals(state.OutputContainer, "mkv", StringComparison.OrdinalIgnoreCase) && state.VideoRequest.CopyTimestamps)
|
|
{
|
|
//inputModifier += " -noaccurate_seek";
|
|
}
|
|
}
|
|
|
|
return inputModifier;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Infers the audio codec based on the url
|
|
/// </summary>
|
|
/// <param name="url">The URL.</param>
|
|
/// <returns>System.Nullable{AudioCodecs}.</returns>
|
|
private string InferAudioCodec(string url)
|
|
{
|
|
var ext = Path.GetExtension(url);
|
|
|
|
if (string.Equals(ext, ".mp3", StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
return "mp3";
|
|
}
|
|
if (string.Equals(ext, ".aac", StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
return "aac";
|
|
}
|
|
if (string.Equals(ext, ".wma", StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
return "wma";
|
|
}
|
|
if (string.Equals(ext, ".ogg", StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
return "vorbis";
|
|
}
|
|
if (string.Equals(ext, ".oga", StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
return "vorbis";
|
|
}
|
|
if (string.Equals(ext, ".ogv", StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
return "vorbis";
|
|
}
|
|
if (string.Equals(ext, ".webm", StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
return "vorbis";
|
|
}
|
|
if (string.Equals(ext, ".webma", StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
return "vorbis";
|
|
}
|
|
|
|
return "copy";
|
|
}
|
|
|
|
/// <summary>
|
|
/// Infers the video codec.
|
|
/// </summary>
|
|
/// <param name="url">The URL.</param>
|
|
/// <returns>System.Nullable{VideoCodecs}.</returns>
|
|
private string InferVideoCodec(string url)
|
|
{
|
|
var ext = Path.GetExtension(url);
|
|
|
|
if (string.Equals(ext, ".asf", StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
return "wmv";
|
|
}
|
|
if (string.Equals(ext, ".webm", StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
return "vpx";
|
|
}
|
|
if (string.Equals(ext, ".ogg", StringComparison.OrdinalIgnoreCase) || string.Equals(ext, ".ogv", StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
return "theora";
|
|
}
|
|
if (string.Equals(ext, ".m3u8", StringComparison.OrdinalIgnoreCase) || string.Equals(ext, ".ts", StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
return "h264";
|
|
}
|
|
|
|
return "copy";
|
|
}
|
|
}
|
|
}
|