diff options
Diffstat (limited to 'MediaBrowser.Api/Playback/Progressive/ProgressiveStreamWriter.cs')
| -rw-r--r-- | MediaBrowser.Api/Playback/Progressive/ProgressiveStreamWriter.cs | 180 |
1 files changed, 0 insertions, 180 deletions
diff --git a/MediaBrowser.Api/Playback/Progressive/ProgressiveStreamWriter.cs b/MediaBrowser.Api/Playback/Progressive/ProgressiveStreamWriter.cs deleted file mode 100644 index a53b848f9..000000000 --- a/MediaBrowser.Api/Playback/Progressive/ProgressiveStreamWriter.cs +++ /dev/null @@ -1,180 +0,0 @@ -using System; -using System.Collections.Generic; -using System.IO; -using System.Threading; -using System.Threading.Tasks; -using MediaBrowser.Controller.Library; -using MediaBrowser.Model.IO; -using MediaBrowser.Model.Services; -using MediaBrowser.Model.System; -using Microsoft.Extensions.Logging; -using OperatingSystem = MediaBrowser.Common.System.OperatingSystem; - -namespace MediaBrowser.Api.Playback.Progressive -{ - public class ProgressiveFileCopier : IAsyncStreamWriter, IHasHeaders - { - private readonly IFileSystem _fileSystem; - private readonly TranscodingJob _job; - private readonly ILogger _logger; - private readonly string _path; - private readonly CancellationToken _cancellationToken; - private readonly Dictionary<string, string> _outputHeaders; - - private long _bytesWritten = 0; - public long StartPosition { get; set; } - public bool AllowEndOfFile = true; - - private readonly IDirectStreamProvider _directStreamProvider; - - public ProgressiveFileCopier(IFileSystem fileSystem, string path, Dictionary<string, string> outputHeaders, TranscodingJob job, ILogger logger, CancellationToken cancellationToken) - { - _fileSystem = fileSystem; - _path = path; - _outputHeaders = outputHeaders; - _job = job; - _logger = logger; - _cancellationToken = cancellationToken; - } - - public ProgressiveFileCopier(IDirectStreamProvider directStreamProvider, Dictionary<string, string> outputHeaders, TranscodingJob job, ILogger logger, CancellationToken cancellationToken) - { - _directStreamProvider = directStreamProvider; - _outputHeaders = outputHeaders; - _job = job; - _logger = logger; - _cancellationToken = cancellationToken; - } - - public IDictionary<string, string> Headers => _outputHeaders; - - private Stream GetInputStream(bool allowAsyncFileRead) - { - var fileOptions = FileOptions.SequentialScan; - - if (allowAsyncFileRead) - { - fileOptions |= FileOptions.Asynchronous; - } - - return new FileStream(_path, FileMode.Open, FileAccess.Read, FileShare.ReadWrite, IODefaults.FileStreamBufferSize, fileOptions); - } - - public async Task WriteToAsync(Stream outputStream, CancellationToken cancellationToken) - { - cancellationToken = CancellationTokenSource.CreateLinkedTokenSource(cancellationToken, _cancellationToken).Token; - - try - { - if (_directStreamProvider != null) - { - await _directStreamProvider.CopyToAsync(outputStream, cancellationToken).ConfigureAwait(false); - return; - } - - var eofCount = 0; - - // use non-async filestream along with read due to https://github.com/dotnet/corefx/issues/6039 - var allowAsyncFileRead = OperatingSystem.Id != OperatingSystemId.Windows; - - using (var inputStream = GetInputStream(allowAsyncFileRead)) - { - if (StartPosition > 0) - { - inputStream.Position = StartPosition; - } - - while (eofCount < 20 || !AllowEndOfFile) - { - int bytesRead; - if (allowAsyncFileRead) - { - bytesRead = await CopyToInternalAsync(inputStream, outputStream, cancellationToken).ConfigureAwait(false); - } - else - { - bytesRead = await CopyToInternalAsyncWithSyncRead(inputStream, outputStream, cancellationToken).ConfigureAwait(false); - } - - //var position = fs.Position; - //_logger.LogDebug("Streamed {0} bytes to position {1} from file {2}", bytesRead, position, path); - - if (bytesRead == 0) - { - if (_job == null || _job.HasExited) - { - eofCount++; - } - await Task.Delay(100, cancellationToken).ConfigureAwait(false); - } - else - { - eofCount = 0; - } - } - } - } - finally - { - if (_job != null) - { - ApiEntryPoint.Instance.OnTranscodeEndRequest(_job); - } - } - } - - private async Task<int> CopyToInternalAsyncWithSyncRead(Stream source, Stream destination, CancellationToken cancellationToken) - { - var array = new byte[IODefaults.CopyToBufferSize]; - int bytesRead; - int totalBytesRead = 0; - - while ((bytesRead = source.Read(array, 0, array.Length)) != 0) - { - var bytesToWrite = bytesRead; - - if (bytesToWrite > 0) - { - await destination.WriteAsync(array, 0, Convert.ToInt32(bytesToWrite), cancellationToken).ConfigureAwait(false); - - _bytesWritten += bytesRead; - totalBytesRead += bytesRead; - - if (_job != null) - { - _job.BytesDownloaded = Math.Max(_job.BytesDownloaded ?? _bytesWritten, _bytesWritten); - } - } - } - - return totalBytesRead; - } - - private async Task<int> CopyToInternalAsync(Stream source, Stream destination, CancellationToken cancellationToken) - { - var array = new byte[IODefaults.CopyToBufferSize]; - int bytesRead; - int totalBytesRead = 0; - - while ((bytesRead = await source.ReadAsync(array, 0, array.Length, cancellationToken).ConfigureAwait(false)) != 0) - { - var bytesToWrite = bytesRead; - - if (bytesToWrite > 0) - { - await destination.WriteAsync(array, 0, Convert.ToInt32(bytesToWrite), cancellationToken).ConfigureAwait(false); - - _bytesWritten += bytesRead; - totalBytesRead += bytesRead; - - if (_job != null) - { - _job.BytesDownloaded = Math.Max(_job.BytesDownloaded ?? _bytesWritten, _bytesWritten); - } - } - } - - return totalBytesRead; - } - } -} |
