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using System;
using System.IO;
using System.Threading;
using System.Threading.Tasks;
using Emby.Server.Implementations.IO;
using MediaBrowser.Model.IO;
using MediaBrowser.Common.Net;
using MediaBrowser.Controller;
using MediaBrowser.Controller.LiveTv;
using MediaBrowser.Controller.Library;
using MediaBrowser.Model.Dto;
using MediaBrowser.Model.Logging;
using MediaBrowser.Model.MediaInfo;
using MediaBrowser.Model.System;
using System.Globalization;
using MediaBrowser.Controller.IO;
using MediaBrowser.Model.LiveTv;
namespace Emby.Server.Implementations.LiveTv.TunerHosts
{
public class SharedHttpStream : LiveStream, IDirectStreamProvider
{
private readonly IHttpClient _httpClient;
private readonly IServerApplicationHost _appHost;
public SharedHttpStream(MediaSourceInfo mediaSource, TunerHostInfo tunerHostInfo, string originalStreamId, IFileSystem fileSystem, IHttpClient httpClient, ILogger logger, IServerApplicationPaths appPaths, IServerApplicationHost appHost, IEnvironmentInfo environment)
: base(mediaSource, tunerHostInfo, environment, fileSystem, logger, appPaths)
{
_httpClient = httpClient;
_appHost = appHost;
OriginalStreamId = originalStreamId;
EnableStreamSharing = true;
}
public override async Task Open(CancellationToken openCancellationToken)
{
LiveStreamCancellationTokenSource.Token.ThrowIfCancellationRequested();
var mediaSource = OriginalMediaSource;
var url = mediaSource.Path;
FileSystem.CreateDirectory(FileSystem.GetDirectoryName(TempFilePath));
var typeName = GetType().Name;
Logger.Info("Opening " + typeName + " Live stream from {0}", url);
var response = await _httpClient.SendAsync(new HttpRequestOptions
{
Url = url,
CancellationToken = CancellationToken.None,
BufferContent = false,
// Increase a little bit
TimeoutMs = 30000,
EnableHttpCompression = false,
LogResponse = true,
LogResponseHeaders = true
}, "GET").ConfigureAwait(false);
var extension = "ts";
var requiresRemux = false;
var contentType = response.ContentType ?? string.Empty;
if (contentType.IndexOf("matroska", StringComparison.OrdinalIgnoreCase) != -1)
{
requiresRemux = true;
}
else if (contentType.IndexOf("mp4", StringComparison.OrdinalIgnoreCase) != -1 ||
contentType.IndexOf("dash", StringComparison.OrdinalIgnoreCase) != -1 ||
contentType.IndexOf("mpegURL", StringComparison.OrdinalIgnoreCase) != -1)
{
requiresRemux = true;
}
// Close the stream without any sharing features
if (requiresRemux)
{
using (response)
{
return;
}
}
SetTempFilePath(extension);
var taskCompletionSource = new TaskCompletionSource<bool>();
var now = DateTime.UtcNow;
StartStreaming(response, taskCompletionSource, LiveStreamCancellationTokenSource.Token);
//OpenedMediaSource.Protocol = MediaProtocol.File;
//OpenedMediaSource.Path = tempFile;
//OpenedMediaSource.ReadAtNativeFramerate = true;
OpenedMediaSource.Path = _appHost.GetLocalApiUrl("127.0.0.1") + "/LiveTv/LiveStreamFiles/" + UniqueId + "/stream.ts";
OpenedMediaSource.Protocol = MediaProtocol.Http;
//OpenedMediaSource.Path = TempFilePath;
//OpenedMediaSource.Protocol = MediaProtocol.File;
//OpenedMediaSource.Path = _tempFilePath;
//OpenedMediaSource.Protocol = MediaProtocol.File;
//OpenedMediaSource.SupportsDirectPlay = false;
//OpenedMediaSource.SupportsDirectStream = true;
//OpenedMediaSource.SupportsTranscoding = true;
await taskCompletionSource.Task.ConfigureAwait(false);
if (OpenedMediaSource.SupportsProbing)
{
var elapsed = (DateTime.UtcNow - now).TotalMilliseconds;
var delay = Convert.ToInt32(3000 - elapsed);
if (delay > 0)
{
Logger.Info("Delaying shared stream by {0}ms to allow the buffer to build.", delay);
await Task.Delay(delay).ConfigureAwait(false);
}
}
}
protected override void CloseInternal()
{
LiveStreamCancellationTokenSource.Cancel();
}
private Task StartStreaming(HttpResponseInfo response, TaskCompletionSource<bool> openTaskCompletionSource, CancellationToken cancellationToken)
{
return Task.Run(async () =>
{
try
{
using (response)
{
using (var stream = response.Content)
{
Logger.Info("Beginning {0} stream to {1}", GetType().Name, TempFilePath);
using (var fileStream = FileSystem.GetFileStream(TempFilePath, FileOpenMode.Create, FileAccessMode.Write, FileShareMode.Read, FileOpenOptions.None))
{
StreamHelper.CopyTo(stream, fileStream, 81920, () => Resolve(openTaskCompletionSource), cancellationToken);
}
}
}
}
catch (OperationCanceledException)
{
}
catch (Exception ex)
{
Logger.ErrorException("Error copying live stream.", ex);
}
EnableStreamSharing = false;
await DeleteTempFile(TempFilePath).ConfigureAwait(false);
});
}
private void Resolve(TaskCompletionSource<bool> openTaskCompletionSource)
{
openTaskCompletionSource.TrySetResult(true);
}
}
}
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