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using System;
using System.IO;
using System.Threading;
using System.Threading.Tasks;
using MediaBrowser.Common.Net;
using MediaBrowser.Controller.Library;
using MediaBrowser.Model.Dto;
using MediaBrowser.Model.IO;
using Microsoft.Extensions.Logging;
namespace Emby.Server.Implementations.LiveTv.EmbyTV
{
public class DirectRecorder : IRecorder
{
private readonly ILogger _logger;
private readonly IHttpClient _httpClient;
private readonly IFileSystem _fileSystem;
private readonly IStreamHelper _streamHelper;
public DirectRecorder(ILogger logger, IHttpClient httpClient, IFileSystem fileSystem, IStreamHelper streamHelper)
{
_logger = logger;
_httpClient = httpClient;
_fileSystem = fileSystem;
_streamHelper = streamHelper;
}
public string GetOutputPath(MediaSourceInfo mediaSource, string targetFile)
{
return targetFile;
}
public Task Record(IDirectStreamProvider directStreamProvider, MediaSourceInfo mediaSource, string targetFile, TimeSpan duration, Action onStarted, CancellationToken cancellationToken)
{
if (directStreamProvider != null)
{
return RecordFromDirectStreamProvider(directStreamProvider, targetFile, duration, onStarted, cancellationToken);
}
return RecordFromMediaSource(mediaSource, targetFile, duration, onStarted, cancellationToken);
}
private async Task RecordFromDirectStreamProvider(IDirectStreamProvider directStreamProvider, string targetFile, TimeSpan duration, Action onStarted, CancellationToken cancellationToken)
{
Directory.CreateDirectory(Path.GetDirectoryName(targetFile));
using (var output = _fileSystem.GetFileStream(targetFile, FileOpenMode.Create, FileAccessMode.Write, FileShareMode.Read))
{
onStarted();
_logger.LogInformation("Copying recording stream to file {0}", targetFile);
// The media source is infinite so we need to handle stopping ourselves
var durationToken = new CancellationTokenSource(duration);
cancellationToken = CancellationTokenSource.CreateLinkedTokenSource(cancellationToken, durationToken.Token).Token;
await directStreamProvider.CopyToAsync(output, cancellationToken).ConfigureAwait(false);
}
_logger.LogInformation("Recording completed to file {0}", targetFile);
}
private async Task RecordFromMediaSource(MediaSourceInfo mediaSource, string targetFile, TimeSpan duration, Action onStarted, CancellationToken cancellationToken)
{
var httpRequestOptions = new HttpRequestOptions
{
Url = mediaSource.Path,
BufferContent = false,
// Some remote urls will expect a user agent to be supplied
UserAgent = "Emby/3.0",
// Shouldn't matter but may cause issues
DecompressionMethod = CompressionMethod.None
};
using (var response = await _httpClient.SendAsync(httpRequestOptions, "GET").ConfigureAwait(false))
{
_logger.LogInformation("Opened recording stream from tuner provider");
Directory.CreateDirectory(Path.GetDirectoryName(targetFile));
using (var output = _fileSystem.GetFileStream(targetFile, FileOpenMode.Create, FileAccessMode.Write, FileShareMode.Read))
{
onStarted();
_logger.LogInformation("Copying recording stream to file {0}", targetFile);
// The media source if infinite so we need to handle stopping ourselves
var durationToken = new CancellationTokenSource(duration);
cancellationToken = CancellationTokenSource.CreateLinkedTokenSource(cancellationToken, durationToken.Token).Token;
await _streamHelper.CopyUntilCancelled(response.Content, output, 81920, cancellationToken).ConfigureAwait(false);
}
}
_logger.LogInformation("Recording completed to file {0}", targetFile);
}
}
}
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