jellyfin-server/MediaBrowser.Api/Playback/Progressive/BaseProgressiveStreamingService.cs
2014-01-12 01:31:21 -05:00

317 lines
12 KiB
C#

using System;
using MediaBrowser.Common.IO;
using MediaBrowser.Common.Net;
using MediaBrowser.Controller.Configuration;
using MediaBrowser.Controller.Drawing;
using MediaBrowser.Controller.Dto;
using MediaBrowser.Controller.Library;
using MediaBrowser.Controller.LiveTv;
using MediaBrowser.Controller.MediaInfo;
using MediaBrowser.Controller.Persistence;
using MediaBrowser.Model.Dto;
using MediaBrowser.Model.IO;
using System.Collections.Generic;
using System.IO;
using System.Net.Http;
using System.Threading;
using System.Threading.Tasks;
namespace MediaBrowser.Api.Playback.Progressive
{
/// <summary>
/// Class BaseProgressiveStreamingService
/// </summary>
public abstract class BaseProgressiveStreamingService : BaseStreamingService
{
protected readonly IImageProcessor ImageProcessor;
protected BaseProgressiveStreamingService(IServerConfigurationManager serverConfig, IUserManager userManager, ILibraryManager libraryManager, IIsoManager isoManager, IMediaEncoder mediaEncoder, IDtoService dtoService, IFileSystem fileSystem, IItemRepository itemRepository, ILiveTvManager liveTvManager, IImageProcessor imageProcessor)
: base(serverConfig, userManager, libraryManager, isoManager, mediaEncoder, dtoService, fileSystem, itemRepository, liveTvManager)
{
ImageProcessor = imageProcessor;
}
/// <summary>
/// Gets the output file extension.
/// </summary>
/// <param name="state">The state.</param>
/// <returns>System.String.</returns>
protected override string GetOutputFileExtension(StreamState state)
{
var ext = base.GetOutputFileExtension(state);
if (!string.IsNullOrEmpty(ext))
{
return ext;
}
var videoRequest = state.Request as VideoStreamRequest;
// Try to infer based on the desired video codec
if (videoRequest != null && videoRequest.VideoCodec.HasValue)
{
if (state.IsInputVideo)
{
switch (videoRequest.VideoCodec.Value)
{
case VideoCodecs.H264:
return ".ts";
case VideoCodecs.Theora:
return ".ogv";
case VideoCodecs.Vpx:
return ".webm";
case VideoCodecs.Wmv:
return ".asf";
}
}
}
// Try to infer based on the desired audio codec
if (state.Request.AudioCodec.HasValue)
{
if (!state.IsInputVideo)
{
switch (state.Request.AudioCodec.Value)
{
case AudioCodecs.Aac:
return ".aac";
case AudioCodecs.Mp3:
return ".mp3";
case AudioCodecs.Vorbis:
return ".ogg";
case AudioCodecs.Wma:
return ".wma";
}
}
}
return null;
}
/// <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>
private void AddDlnaHeaders(StreamState state, IDictionary<string, string> responseHeaders, bool isStaticallyStreamed)
{
var timeSeek = GetHeader("TimeSeekRange.dlna.org");
if (!string.IsNullOrEmpty(timeSeek))
{
ResultFactory.ThrowError(406, "Time seek not supported during encoding.", responseHeaders);
return;
}
var transferMode = GetHeader("transferMode.dlna.org");
responseHeaders["transferMode.dlna.org"] = string.IsNullOrEmpty(transferMode) ? "Streaming" : transferMode;
responseHeaders["realTimeInfo.dlna.org"] = "DLNA.ORG_TLAG=*";
var contentFeatures = string.Empty;
var extension = GetOutputFileExtension(state);
// 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
var orgOp = isStaticallyStreamed ? ";DLNA.ORG_OP=01" : ";DLNA.ORG_OP=00";
// 0 = native, 1 = transcoded
var orgCi = isStaticallyStreamed ? ";DLNA.ORG_CI=0" : ";DLNA.ORG_CI=1";
const string dlnaflags = ";DLNA.ORG_FLAGS=01500000000000000000000000000000";
if (string.Equals(extension, ".mp3", StringComparison.OrdinalIgnoreCase))
{
contentFeatures = "DLNA.ORG_PN=MP3";
}
else if (string.Equals(extension, ".aac", StringComparison.OrdinalIgnoreCase))
{
contentFeatures = "DLNA.ORG_PN=AAC_ISO";
}
else if (string.Equals(extension, ".wma", StringComparison.OrdinalIgnoreCase))
{
contentFeatures = "DLNA.ORG_PN=WMABASE";
}
else if (string.Equals(extension, ".avi", StringComparison.OrdinalIgnoreCase))
{
contentFeatures = "DLNA.ORG_PN=AVI";
}
//else if (string.Equals(extension, ".mp4", StringComparison.OrdinalIgnoreCase))
//{
// contentFeatures = "DLNA.ORG_PN=MPEG4_P2_SP_AAC";
//}
//else if (string.Equals(extension, ".mpeg", StringComparison.OrdinalIgnoreCase))
//{
// contentFeatures = "DLNA.ORG_PN=MPEG_PS_PAL";
//}
//else if (string.Equals(extension, ".wmv", StringComparison.OrdinalIgnoreCase))
//{
// contentFeatures = "DLNA.ORG_PN=WMVHIGH_BASE";
//}
//else if (string.Equals(extension, ".asf", StringComparison.OrdinalIgnoreCase))
//{
// // ??
// contentFeatures = "DLNA.ORG_PN=WMVHIGH_BASE";
//}
//else if (string.Equals(extension, ".mkv", StringComparison.OrdinalIgnoreCase))
//{
// // ??
// contentFeatures = "";
//}
if (!string.IsNullOrEmpty(contentFeatures))
{
responseHeaders["ContentFeatures.DLNA.ORG"] = (contentFeatures + orgOp + orgCi + dlnaflags).Trim(';');
}
foreach (var item in responseHeaders)
{
Request.Response.AddHeader(item.Key, item.Value);
}
}
/// <summary>
/// Gets the type of the transcoding job.
/// </summary>
/// <value>The type of the transcoding job.</value>
protected override TranscodingJobType TranscodingJobType
{
get { return TranscodingJobType.Progressive; }
}
/// <summary>
/// Processes the request.
/// </summary>
/// <param name="request">The request.</param>
/// <param name="isHeadRequest">if set to <c>true</c> [is head request].</param>
/// <returns>Task.</returns>
protected object ProcessRequest(StreamRequest request, bool isHeadRequest)
{
var state = GetState(request, CancellationToken.None).Result;
var responseHeaders = new Dictionary<string, string>();
if (request.Static && state.IsRemote)
{
return GetStaticRemoteStreamResult(state.MediaPath, responseHeaders, isHeadRequest).Result;
}
var outputPath = GetOutputFilePath(state);
var outputPathExists = File.Exists(outputPath);
var isStatic = request.Static ||
(outputPathExists && !ApiEntryPoint.Instance.HasActiveTranscodingJob(outputPath, TranscodingJobType.Progressive));
AddDlnaHeaders(state, responseHeaders, isStatic);
if (request.Static)
{
return ResultFactory.GetStaticFileResult(Request, state.MediaPath, FileShare.Read, responseHeaders, isHeadRequest);
}
if (outputPathExists && !ApiEntryPoint.Instance.HasActiveTranscodingJob(outputPath, TranscodingJobType.Progressive))
{
return ResultFactory.GetStaticFileResult(Request, outputPath, FileShare.Read, responseHeaders, isHeadRequest);
}
return GetStreamResult(state, responseHeaders, isHeadRequest).Result;
}
/// <summary>
/// Gets the static remote stream result.
/// </summary>
/// <param name="mediaPath">The media path.</param>
/// <param name="responseHeaders">The response headers.</param>
/// <param name="isHeadRequest">if set to <c>true</c> [is head request].</param>
/// <returns>Task{System.Object}.</returns>
private async Task<object> GetStaticRemoteStreamResult(string mediaPath, Dictionary<string, string> responseHeaders, bool isHeadRequest)
{
responseHeaders["Accept-Ranges"] = "none";
var httpClient = new HttpClient();
using (var message = new HttpRequestMessage(HttpMethod.Get, mediaPath))
{
var useragent = GetUserAgent(mediaPath);
if (!string.IsNullOrEmpty(useragent))
{
message.Headers.Add("User-Agent", useragent);
}
var response = await httpClient.SendAsync(message, HttpCompletionOption.ResponseHeadersRead).ConfigureAwait(false);
response.EnsureSuccessStatusCode();
var contentType = response.Content.Headers.ContentType.MediaType;
// Headers only
if (isHeadRequest)
{
response.Dispose();
httpClient.Dispose();
return ResultFactory.GetResult(null, contentType, responseHeaders);
}
var result = new StaticRemoteStreamWriter(response, httpClient);
result.Options["Content-Type"] = contentType;
// Add the response headers to the result object
foreach (var header in responseHeaders)
{
result.Options[header.Key] = header.Value;
}
return result;
}
}
/// <summary>
/// Gets the stream result.
/// </summary>
/// <param name="state">The state.</param>
/// <param name="responseHeaders">The response headers.</param>
/// <param name="isHeadRequest">if set to <c>true</c> [is head request].</param>
/// <returns>Task{System.Object}.</returns>
private async Task<object> GetStreamResult(StreamState state, IDictionary<string, string> responseHeaders, bool isHeadRequest)
{
// Use the command line args with a dummy playlist path
var outputPath = GetOutputFilePath(state);
var contentType = MimeTypes.GetMimeType(outputPath);
// Headers only
if (isHeadRequest)
{
responseHeaders["Accept-Ranges"] = "none";
return ResultFactory.GetResult(null, contentType, responseHeaders);
}
if (!File.Exists(outputPath))
{
await StartFfMpeg(state, outputPath).ConfigureAwait(false);
}
else
{
ApiEntryPoint.Instance.OnTranscodeBeginRequest(outputPath, TranscodingJobType.Progressive);
}
var result = new ProgressiveStreamWriter(outputPath, Logger, FileSystem);
result.Options["Accept-Ranges"] = "none";
result.Options["Content-Type"] = contentType;
// Add the response headers to the result object
foreach (var item in responseHeaders)
{
result.Options[item.Key] = item.Value;
}
return result;
}
}
}