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116 lines
3.6 KiB
C#
116 lines
3.6 KiB
C#
using MediaBrowser.Common.IO;
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using MediaBrowser.Model.Logging;
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using ServiceStack.Service;
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using ServiceStack.ServiceHost;
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using System;
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using System.Collections.Generic;
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using System.IO;
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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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public class ProgressiveStreamWriter : IStreamWriter, IHasOptions
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{
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private string Path { get; set; }
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private StreamState State { get; set; }
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private ILogger Logger { get; set; }
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/// <summary>
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/// The _options
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/// </summary>
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private readonly IDictionary<string, string> _options = new Dictionary<string, string>();
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/// <summary>
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/// Gets the options.
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/// </summary>
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/// <value>The options.</value>
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public IDictionary<string, string> Options
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{
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get { return _options; }
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}
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/// <summary>
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/// Initializes a new instance of the <see cref="ProgressiveStreamWriter" /> class.
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/// </summary>
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/// <param name="path">The path.</param>
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/// <param name="state">The state.</param>
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/// <param name="logger">The logger.</param>
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public ProgressiveStreamWriter(string path, StreamState state, ILogger logger)
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{
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Path = path;
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State = state;
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Logger = logger;
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}
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/// <summary>
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/// Writes to.
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/// </summary>
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/// <param name="responseStream">The response stream.</param>
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public void WriteTo(Stream responseStream)
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{
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var task = WriteToAsync(responseStream);
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Task.WaitAll(task);
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}
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/// <summary>
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/// Writes to async.
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/// </summary>
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/// <param name="responseStream">The response stream.</param>
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/// <returns>Task.</returns>
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public async Task WriteToAsync(Stream responseStream)
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{
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try
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{
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await StreamFile(Path, responseStream).ConfigureAwait(false);
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}
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catch (Exception ex)
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{
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Logger.ErrorException("Error streaming media", ex);
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throw;
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}
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finally
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{
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ApiEntryPoint.Instance.OnTranscodeEndRequest(Path, TranscodingJobType.Progressive);
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}
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}
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/// <summary>
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/// Streams the file.
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/// </summary>
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/// <param name="path">The path.</param>
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/// <param name="outputStream">The output stream.</param>
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/// <returns>Task{System.Boolean}.</returns>
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private async Task StreamFile(string path, Stream outputStream)
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{
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var eofCount = 0;
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long position = 0;
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using (var fs = new FileStream(path, FileMode.Open, FileAccess.Read, FileShare.ReadWrite, StreamDefaults.DefaultFileStreamBufferSize, FileOptions.Asynchronous))
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{
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while (eofCount < 15)
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{
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await fs.CopyToAsync(outputStream).ConfigureAwait(false);
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var fsPosition = fs.Position;
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var bytesRead = fsPosition - position;
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//Logger.Debug("Streamed {0} bytes from file {1}", bytesRead, path);
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if (bytesRead == 0)
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{
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eofCount++;
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await Task.Delay(100).ConfigureAwait(false);
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}
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else
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{
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eofCount = 0;
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}
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position = fsPosition;
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}
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}
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}
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}
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}
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