1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
|
using MediaBrowser.Common.IO;
using MediaBrowser.Model.Logging;
using ServiceStack.Service;
using ServiceStack.ServiceHost;
using System;
using System.Collections.Generic;
using System.IO;
using System.Threading.Tasks;
namespace MediaBrowser.Api.Playback.Progressive
{
public class ProgressiveStreamWriter : IStreamWriter, IHasOptions
{
private string Path { get; set; }
private ILogger Logger { get; set; }
/// <summary>
/// The _options
/// </summary>
private readonly IDictionary<string, string> _options = new Dictionary<string, string>();
/// <summary>
/// Gets the options.
/// </summary>
/// <value>The options.</value>
public IDictionary<string, string> Options
{
get { return _options; }
}
/// <summary>
/// Initializes a new instance of the <see cref="ProgressiveStreamWriter" /> class.
/// </summary>
/// <param name="path">The path.</param>
/// <param name="logger">The logger.</param>
public ProgressiveStreamWriter(string path, ILogger logger)
{
Path = path;
Logger = logger;
}
/// <summary>
/// Writes to.
/// </summary>
/// <param name="responseStream">The response stream.</param>
public void WriteTo(Stream responseStream)
{
var task = WriteToAsync(responseStream);
Task.WaitAll(task);
}
/// <summary>
/// Writes to async.
/// </summary>
/// <param name="responseStream">The response stream.</param>
/// <returns>Task.</returns>
public async Task WriteToAsync(Stream responseStream)
{
try
{
await StreamFile(Path, responseStream).ConfigureAwait(false);
}
catch (Exception ex)
{
Logger.ErrorException("Error streaming media", ex);
throw;
}
finally
{
ApiEntryPoint.Instance.OnTranscodeEndRequest(Path, TranscodingJobType.Progressive);
}
}
/// <summary>
/// Streams the file.
/// </summary>
/// <param name="path">The path.</param>
/// <param name="outputStream">The output stream.</param>
/// <returns>Task{System.Boolean}.</returns>
private async Task StreamFile(string path, Stream outputStream)
{
var eofCount = 0;
long position = 0;
using (var fs = new FileStream(path, FileMode.Open, FileAccess.Read, FileShare.ReadWrite, StreamDefaults.DefaultFileStreamBufferSize, FileOptions.Asynchronous))
{
while (eofCount < 15)
{
await fs.CopyToAsync(outputStream).ConfigureAwait(false);
var fsPosition = fs.Position;
var bytesRead = fsPosition - position;
//Logger.Debug("Streamed {0} bytes from file {1}", bytesRead, path);
if (bytesRead == 0)
{
eofCount++;
await Task.Delay(100).ConfigureAwait(false);
}
else
{
eofCount = 0;
}
position = fsPosition;
}
}
}
}
}
|
