/// <summary>
/// Used to peek at the raw trace entries without actually removing them.
/// This method is thread-safe
/// </summary>
/// <param name="BeforePeek">Optional thread-safe action to run before the peek occurs.</param>
/// <returns>All SSME tracelogs currently in the queue.</returns>
public static TraceEntry[] PeekTraceEntries(Action BeforePeek)
{
lock (traceLock)
{
if (BeforePeek != null)
{
BeforePeek();
}
return(Tracing.GetTraceEntries(false));
}
}
static void worker_DoWork(object sender, DoWorkEventArgs e)
{
TraceEntry[] entries;
lock (traceLock)
{
entries = Tracing.GetTraceEntries(true) ?? new TraceEntry[] { };
}
// The TraceClient will raise an event to tell us about it. Event is will fire synchronously.
traceClient.ParseTraceEntries(entries);
if (PulseBackground != null)
{
PulseBackground();
}
if (ReportTraceLog != null)
{
ReportTraceLog(entries);
}
}
public void Refresh()
{
TraceEntry[] entries;
lock (traceLock)
{
entries = Tracing.GetTraceEntries(true) ?? new TraceEntry[] { };
}
foreach (var entry in entries)
{
if (entry.TraceLevel == TraceLevel.Warning || entry.TraceLevel == TraceLevel.Fatal ||
entry.TraceLevel == TraceLevel.Error || entry.TraceLevel == TraceLevel.Shutdown)
{
if (entry.TraceArea == TraceArea.BufferingEngine)
{
if (entry.MethodName == "HandleDownloadError")
{
if (ChunkFailure != null)
{
var args = GetChunkError(entry);
if (args != null)
{
ChunkFailure(this, args);
}
}
}
}
}
else
{
switch (entry.TraceArea)
{
case TraceArea.Heuristics:
if (entry.MethodName == "GetPerceivedBandwidth")
{
PerceivedBandwidth = GetPerceivedBandwidth(entry);
}
break;
case TraceArea.Test:
if (ChunkDownloaded != null)
{
try
{
// this trace message sometimes had bad data in it
string[] s = entry.Text.Split(' ');
if (s.Length == 17 && (s[5] == "V" || s[5] == "A"))
{
var result = new Microsoft.Media.Analytics.ChunkDownloadedEventArgs();
TimeSpan downloadTime;
if (TimeSpan.TryParse(s[2], CultureInfo.CurrentCulture, out downloadTime))
{
result.DownloadTimeMs = (uint)downloadTime.TotalMilliseconds;
}
result.Bitrate = uint.Parse(s[10]);
result.ChunkId = int.Parse(s[9]);
result.ByteCount = uint.Parse(s[7]);
result.StreamType = s[5].ToLowerInvariant();
// TODO: result.PerceivedBandwidth = 0;
// TODO: result.StartTime = 0;
ChunkDownloaded(this, result);
}
}
catch { /* ignore this exception, must have been a bad trace message */ }
}
break;
case TraceArea.BufferingEngine:
if (entry.MethodName == "AddChunkToCache")
{
var bufferSizeChange = GetBufferSize(entry);
if (bufferSizeChange.StreamType == "video")
{
VideoBufferSize = bufferSizeChange.Size;
}
else if (bufferSizeChange.StreamType == "audio")
{
AudioBufferSize = bufferSizeChange.Size;
}
}
break;
}
}
}
}
