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
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
|
#nullable disable
#pragma warning disable CS1591
using System;
using System.Globalization;
using System.IO;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using Microsoft.Extensions.Logging;
namespace MediaBrowser.Controller.MediaEncoding
{
public class JobLogger
{
private static readonly CultureInfo _usCulture = CultureInfo.ReadOnly(new CultureInfo("en-US"));
private readonly ILogger _logger;
public JobLogger(ILogger logger)
{
_logger = logger;
}
public async Task StartStreamingLog(EncodingJobInfo state, Stream source, Stream target)
{
try
{
using (target)
using (var reader = new StreamReader(source))
{
while (!reader.EndOfStream && reader.BaseStream.CanRead)
{
var line = await reader.ReadLineAsync().ConfigureAwait(false);
ParseLogLine(line, state);
var bytes = Encoding.UTF8.GetBytes(Environment.NewLine + line);
// If ffmpeg process is closed, the state is disposed, so don't write to target in that case
if (!target.CanWrite)
{
break;
}
await target.WriteAsync(bytes, 0, bytes.Length).ConfigureAwait(false);
// Check again, the stream could have been closed
if (!target.CanWrite)
{
break;
}
await target.FlushAsync().ConfigureAwait(false);
}
}
}
catch (Exception ex)
{
_logger.LogError(ex, "Error reading ffmpeg log");
}
}
private void ParseLogLine(string line, EncodingJobInfo state)
{
float? framerate = null;
double? percent = null;
TimeSpan? transcodingPosition = null;
long? bytesTranscoded = null;
int? bitRate = null;
var parts = line.Split(' ');
var totalMs = state.RunTimeTicks.HasValue
? TimeSpan.FromTicks(state.RunTimeTicks.Value).TotalMilliseconds
: 0;
var startMs = state.BaseRequest.StartTimeTicks.HasValue
? TimeSpan.FromTicks(state.BaseRequest.StartTimeTicks.Value).TotalMilliseconds
: 0;
for (var i = 0; i < parts.Length; i++)
{
var part = parts[i];
if (string.Equals(part, "fps=", StringComparison.OrdinalIgnoreCase) &&
(i + 1 < parts.Length))
{
var rate = parts[i + 1];
if (float.TryParse(rate, NumberStyles.Any, _usCulture, out var val))
{
framerate = val;
}
}
else if (part.StartsWith("fps=", StringComparison.OrdinalIgnoreCase))
{
var rate = part.Split('=', 2)[^1];
if (float.TryParse(rate, NumberStyles.Any, _usCulture, out var val))
{
framerate = val;
}
}
else if (state.RunTimeTicks.HasValue &&
part.StartsWith("time=", StringComparison.OrdinalIgnoreCase))
{
var time = part.Split('=', 2)[^1];
if (TimeSpan.TryParse(time, _usCulture, out var val))
{
var currentMs = startMs + val.TotalMilliseconds;
percent = 100.0 * currentMs / totalMs;
transcodingPosition = val;
}
}
else if (part.StartsWith("size=", StringComparison.OrdinalIgnoreCase))
{
var size = part.Split('=', 2)[^1];
int? scale = null;
if (size.IndexOf("kb", StringComparison.OrdinalIgnoreCase) != -1)
{
scale = 1024;
size = size.Replace("kb", string.Empty, StringComparison.OrdinalIgnoreCase);
}
if (scale.HasValue)
{
if (long.TryParse(size, NumberStyles.Any, _usCulture, out var val))
{
bytesTranscoded = val * scale.Value;
}
}
}
else if (part.StartsWith("bitrate=", StringComparison.OrdinalIgnoreCase))
{
var rate = part.Split('=', 2)[^1];
int? scale = null;
if (rate.IndexOf("kbits/s", StringComparison.OrdinalIgnoreCase) != -1)
{
scale = 1024;
rate = rate.Replace("kbits/s", string.Empty, StringComparison.OrdinalIgnoreCase);
}
if (scale.HasValue)
{
if (float.TryParse(rate, NumberStyles.Any, _usCulture, out var val))
{
bitRate = (int)Math.Ceiling(val * scale.Value);
}
}
}
}
if (framerate.HasValue || percent.HasValue)
{
state.ReportTranscodingProgress(transcodingPosition, framerate, percent, bytesTranscoded, bitRate);
}
}
}
}
|
