private void ParseOutputStream(Stream stdoutStream, Reference<WebTranscodingInfo> data, bool logProgress, int position)
{
StreamReader reader = new StreamReader(stdoutStream);
TranscodingInfoCalculator calculator = new TranscodingInfoCalculator(position * 1000, 25, 500, info.Duration); //VLCWrapper prints twice a second
bool aborted = false;
string line;
while ((line = reader.ReadLine()) != null)
{
try
{
// just for debugging of the wrapper tool
if(line.StartsWith("A") || line == "S started" || line == "S null")
continue;
// propagate start event to Start() method
if (line == "S playing")
{
vlcIsStarted = true;
continue;
}
// events
if (line == "S error")
{
vlcIsStarted = true;
data.Value.Finished = true;
data.Value.Failed = true;
break;
}
if (line == "S finished")
{
data.Value.Failed = false;
data.Value.Finished = true;
continue;
}
// the actual progress parsing
if(line.StartsWith("P"))
{
int msecs = Int32.Parse(line.Substring(2, line.IndexOf(",") - 2)) / 1000;
if (msecs != 0)
{
calculator.NewTime(msecs);
}
else
{
double percentage = Double.Parse(line.Substring(line.IndexOf(",") + 2), CultureInfo.InvariantCulture);
calculator.NewPercentage(percentage);
}
calculator.SetStats(data);
continue;
}
Log.Warn("VLCWrapperParsing: encountered unknown line {0}", line);
}
catch (ThreadAbortException)
{
aborted = true;
break;
}
catch (Exception e)
{
Log.Error("Failure during parsing of VLC output", e);
}
}
data.Value.Failed = aborted;
data.Value.Finished = true;
reader.Close();
return;
}
private void ParseOutputStream(Stream stdoutStream, Reference<WebTranscodingInfo> data, long startPosition, bool logProgress)
{
StreamReader reader = new StreamReader(stdoutStream);
TranscodingInfoCalculator calculator = new TranscodingInfoCalculator(position, 25, 500, info.Duration); //VLCWrapper prints twice a second
string line;
try
{
while ((line = reader.ReadLine()) != null)
{
try
{
Log.Trace("VLCWrapperParsing: read line {0}", line);
// just for debugging of the wrapper tool
if (line.StartsWith("A") || line.StartsWith("I") || line == "S started" || line == "S null")
continue;
// propagate start event to Start() method
if (line == "S playing")
{
vlcIsStarted = true;
continue;
}
// events
if (line == "S error")
{
vlcIsStarted = true;
data.Value.Finished = true;
data.Value.Failed = true;
break;
}
if (line == "S finished")
{
data.Value.Finished = true;
continue;
}
// the actual progress parsing
if (line.StartsWith("P"))
{
// Starting with VLCWrapper 0.2, the output format has changed. It is 'P [time in milliseconds]' now, which is quite easy for
// us to handle. With VLC 2 it also returns the time as a 64-bit integer, so we don't have overflow anymore either, but that risk
// is with milliseconds quite small anyhow: it requires 596 hours of video.
long milliseconds = Int64.Parse(line.Substring(2));
calculator.NewTime((int)milliseconds);
calculator.SaveStats(data);
continue;
}
Log.Warn("VLCWrapperParsing: encountered unknown line {0}", line);
}
catch (ThreadAbortException)
{
data.Value.Finished = true;
reader.Close();
return;
}
catch (Exception e)
{
Log.Error("Failure during parsing of VLC output", e);
}
}
}
catch (ThreadAbortException)
{
// The double try-catch is to make sure that the parsing doesn't stop when it can't process a single line, but that we don't
// log too much noise when a ThreadAbortException occurs while in the ReadLine() method. Funnily enough, this exception is
// rethrown when we leave the catch block, so duplicate some code from below...
data.Value.Finished = true;
reader.Close();
return;
}
data.Value.Finished = true;
reader.Close();
}