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362 lines
14 KiB
C#
362 lines
14 KiB
C#
using MediaBrowser.Api.Images;
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using MediaBrowser.Common.IO;
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using MediaBrowser.Common.MediaInfo;
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using MediaBrowser.Common.Net;
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using MediaBrowser.Controller;
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using MediaBrowser.Controller.Drawing;
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using MediaBrowser.Controller.Dto;
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using MediaBrowser.Controller.Entities;
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using MediaBrowser.Controller.Entities.Audio;
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using MediaBrowser.Controller.Library;
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using MediaBrowser.Controller.Persistence;
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using MediaBrowser.Model.Dto;
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using MediaBrowser.Model.Entities;
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using MediaBrowser.Model.IO;
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using System.Collections.Generic;
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using System.IO;
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using System.Net.Http;
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using System.Threading.Tasks;
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namespace MediaBrowser.Api.Playback.Progressive
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{
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/// <summary>
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/// Class BaseProgressiveStreamingService
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/// </summary>
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public abstract class BaseProgressiveStreamingService : BaseStreamingService
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{
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protected readonly IImageProcessor ImageProcessor;
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protected BaseProgressiveStreamingService(IServerApplicationPaths appPaths, IUserManager userManager, ILibraryManager libraryManager, IIsoManager isoManager, IMediaEncoder mediaEncoder, IItemRepository itemRepository, IDtoService dtoService, IImageProcessor imageProcessor, IFileSystem fileSystem) :
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base(appPaths, userManager, libraryManager, isoManager, mediaEncoder, dtoService, fileSystem, itemRepository)
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{
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ImageProcessor = imageProcessor;
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}
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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 override string GetOutputFileExtension(StreamState state)
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{
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var ext = base.GetOutputFileExtension(state);
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if (!string.IsNullOrEmpty(ext))
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{
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return ext;
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}
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var videoRequest = state.Request as VideoStreamRequest;
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// Try to infer based on the desired video codec
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if (videoRequest != null && videoRequest.VideoCodec.HasValue)
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{
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var video = state.Item as Video;
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if (video != null)
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{
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switch (videoRequest.VideoCodec.Value)
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{
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case VideoCodecs.H264:
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return ".ts";
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case VideoCodecs.Theora:
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return ".ogv";
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case VideoCodecs.Vpx:
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return ".webm";
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case VideoCodecs.Wmv:
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return ".asf";
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}
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}
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}
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// Try to infer based on the desired audio codec
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if (state.Request.AudioCodec.HasValue)
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{
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var audio = state.Item as Audio;
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if (audio != null)
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{
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switch (state.Request.AudioCodec.Value)
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{
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case AudioCodecs.Aac:
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return ".aac";
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case AudioCodecs.Mp3:
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return ".mp3";
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case AudioCodecs.Vorbis:
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return ".ogg";
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case AudioCodecs.Wma:
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return ".wma";
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}
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}
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}
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return null;
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}
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/// <summary>
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/// Adds the dlna headers.
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/// </summary>
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/// <param name="state">The state.</param>
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/// <param name="responseHeaders">The response headers.</param>
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/// <param name="isStaticallyStreamed">if set to <c>true</c> [is statically streamed].</param>
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/// <returns><c>true</c> if XXXX, <c>false</c> otherwise</returns>
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private void AddDlnaHeaders(StreamState state, IDictionary<string, string> responseHeaders, bool isStaticallyStreamed)
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{
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var timeSeek = RequestContext.GetHeader("TimeSeekRange.dlna.org");
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if (!string.IsNullOrEmpty(timeSeek))
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{
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ResultFactory.ThrowError(406, "Time seek not supported during encoding.", responseHeaders);
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return;
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}
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var transferMode = RequestContext.GetHeader("transferMode.dlna.org");
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responseHeaders["transferMode.dlna.org"] = string.IsNullOrEmpty(transferMode) ? "Streaming" : transferMode;
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var contentFeatures = string.Empty;
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var extension = GetOutputFileExtension(state);
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// first bit means Time based seek supported, second byte range seek supported (not sure about the order now), so 01 = only byte seek, 10 = time based, 11 = both, 00 = none
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var orgOp = isStaticallyStreamed ? ";DLNA.ORG_OP=01" : ";DLNA.ORG_OP=00";
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// 0 = native, 1 = transcoded
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var orgCi = isStaticallyStreamed ? ";DLNA.ORG_CI=0" : ";DLNA.ORG_CI=1";
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const string dlnaflags = ";DLNA.ORG_FLAGS=01500000000000000000000000000000";
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//if (string.Equals(extension, ".mp3", StringComparison.OrdinalIgnoreCase))
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//{
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// contentFeatures = "DLNA.ORG_PN=MP3";
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//}
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//else if (string.Equals(extension, ".aac", StringComparison.OrdinalIgnoreCase))
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//{
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// contentFeatures = "DLNA.ORG_PN=AAC_ISO";
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//}
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//else if (string.Equals(extension, ".wma", StringComparison.OrdinalIgnoreCase))
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//{
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// contentFeatures = "DLNA.ORG_PN=WMABASE";
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//}
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//else if (string.Equals(extension, ".avi", StringComparison.OrdinalIgnoreCase))
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//{
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// contentFeatures = "DLNA.ORG_PN=AVI";
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//}
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//else if (string.Equals(extension, ".mp4", StringComparison.OrdinalIgnoreCase))
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//{
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// contentFeatures = "DLNA.ORG_PN=MPEG4_P2_SP_AAC";
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//}
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//else if (string.Equals(extension, ".mpeg", StringComparison.OrdinalIgnoreCase))
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//{
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// contentFeatures = "DLNA.ORG_PN=MPEG_PS_PAL";
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//}
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//else if (string.Equals(extension, ".wmv", StringComparison.OrdinalIgnoreCase))
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//{
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// contentFeatures = "DLNA.ORG_PN=WMVHIGH_BASE";
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//}
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//else if (string.Equals(extension, ".asf", StringComparison.OrdinalIgnoreCase))
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//{
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// // ??
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// contentFeatures = "DLNA.ORG_PN=WMVHIGH_BASE";
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//}
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//else if (string.Equals(extension, ".mkv", StringComparison.OrdinalIgnoreCase))
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//{
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// // ??
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// contentFeatures = "";
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//}
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if (!string.IsNullOrEmpty(contentFeatures))
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{
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responseHeaders["ContentFeatures.DLNA.ORG"] = (contentFeatures + orgOp + orgCi + dlnaflags).Trim(';');
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}
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}
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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 override TranscodingJobType TranscodingJobType
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{
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get { return TranscodingJobType.Progressive; }
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}
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/// <summary>
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/// Processes the request.
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/// </summary>
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/// <param name="request">The request.</param>
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/// <param name="isHeadRequest">if set to <c>true</c> [is head request].</param>
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/// <returns>Task.</returns>
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protected object ProcessRequest(StreamRequest request, bool isHeadRequest)
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{
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var state = GetState(request);
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if (request.AlbumArt)
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{
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return GetAlbumArtResponse(state);
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}
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var responseHeaders = new Dictionary<string, string>();
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if (request.Static && state.Item.LocationType == LocationType.Remote)
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{
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return GetStaticRemoteStreamResult(state.Item, responseHeaders, isHeadRequest).Result;
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}
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var outputPath = GetOutputFilePath(state);
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var outputPathExists = File.Exists(outputPath);
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var isStatic = request.Static ||
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(outputPathExists && !ApiEntryPoint.Instance.HasActiveTranscodingJob(outputPath, TranscodingJobType.Progressive));
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AddDlnaHeaders(state, responseHeaders, isStatic);
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if (request.Static)
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{
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return ResultFactory.GetStaticFileResult(RequestContext, state.Item.Path, FileShare.Read, responseHeaders, isHeadRequest);
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}
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if (outputPathExists && !ApiEntryPoint.Instance.HasActiveTranscodingJob(outputPath, TranscodingJobType.Progressive))
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{
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return ResultFactory.GetStaticFileResult(RequestContext, outputPath, FileShare.Read, responseHeaders, isHeadRequest);
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}
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return GetStreamResult(state, responseHeaders, isHeadRequest).Result;
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}
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/// <summary>
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/// Gets the static remote stream result.
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/// </summary>
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/// <param name="item">The item.</param>
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/// <param name="responseHeaders">The response headers.</param>
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/// <param name="isHeadRequest">if set to <c>true</c> [is head request].</param>
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/// <returns>Task{System.Object}.</returns>
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private async Task<object> GetStaticRemoteStreamResult(BaseItem item, Dictionary<string, string> responseHeaders, bool isHeadRequest)
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{
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responseHeaders["Accept-Ranges"] = "none";
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var httpClient = new HttpClient();
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using (var message = new HttpRequestMessage(HttpMethod.Get, item.Path))
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{
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var useragent = GetUserAgent(item);
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if (!string.IsNullOrEmpty(useragent))
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{
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message.Headers.Add("User-Agent", useragent);
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}
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var response = await httpClient.SendAsync(message, HttpCompletionOption.ResponseHeadersRead).ConfigureAwait(false);
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response.EnsureSuccessStatusCode();
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var contentType = response.Content.Headers.ContentType.MediaType;
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// Headers only
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if (isHeadRequest)
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{
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response.Dispose();
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httpClient.Dispose();
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return ResultFactory.GetResult(null, contentType, responseHeaders);
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}
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var result = new StaticRemoteStreamWriter(response, httpClient);
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result.Options["Content-Type"] = contentType;
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// Add the response headers to the result object
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foreach (var header in responseHeaders)
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{
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result.Options[header.Key] = header.Value;
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}
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return result;
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}
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}
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/// <summary>
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/// Gets the album art response.
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/// </summary>
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/// <param name="state">The state.</param>
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/// <returns>System.Object.</returns>
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private object GetAlbumArtResponse(StreamState state)
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{
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var request = new GetItemImage
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{
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MaxWidth = 800,
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MaxHeight = 800,
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Type = ImageType.Primary,
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Id = state.Item.Id.ToString()
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};
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// Try and find some image to return
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if (!state.Item.HasImage(ImageType.Primary))
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{
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if (state.Item.HasImage(ImageType.Backdrop))
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{
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request.Type = ImageType.Backdrop;
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}
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else if (state.Item.HasImage(ImageType.Thumb))
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{
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request.Type = ImageType.Thumb;
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}
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else if (state.Item.HasImage(ImageType.Logo))
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{
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request.Type = ImageType.Logo;
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}
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}
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return new ImageService(UserManager, LibraryManager, ApplicationPaths, null, ItemRepository, DtoService, ImageProcessor, null)
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{
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Logger = Logger,
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RequestContext = RequestContext,
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ResultFactory = ResultFactory
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}.Get(request);
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}
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/// <summary>
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/// Gets the stream result.
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/// </summary>
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/// <param name="state">The state.</param>
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/// <param name="responseHeaders">The response headers.</param>
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/// <param name="isHeadRequest">if set to <c>true</c> [is head request].</param>
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/// <returns>Task{System.Object}.</returns>
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private async Task<object> GetStreamResult(StreamState state, IDictionary<string, string> responseHeaders, bool isHeadRequest)
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{
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// Use the command line args with a dummy playlist path
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var outputPath = GetOutputFilePath(state);
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var contentType = MimeTypes.GetMimeType(outputPath);
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// Headers only
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if (isHeadRequest)
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{
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responseHeaders["Accept-Ranges"] = "none";
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return ResultFactory.GetResult(null, contentType, responseHeaders);
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}
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if (!File.Exists(outputPath))
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{
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await StartFfMpeg(state, outputPath).ConfigureAwait(false);
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}
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else
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{
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ApiEntryPoint.Instance.OnTranscodeBeginRequest(outputPath, TranscodingJobType.Progressive);
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}
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var result = new ProgressiveStreamWriter(outputPath, Logger, FileSystem);
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result.Options["Accept-Ranges"] = "none";
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result.Options["Content-Type"] = contentType;
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// Add the response headers to the result object
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foreach (var item in responseHeaders)
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{
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result.Options[item.Key] = item.Value;
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}
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return result;
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}
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}
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}
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