public IFramePixelData LoadFramePixelData(LoadFramePixelDataArgs args)
{
try
{
var client = new StreamingClient(_wadoUri);
var result = client.RetrievePixelData(_aeTitle, args.StudyInstanceUid, args.SeriesInstanceUid, args.SopInstanceUid, args.FrameNumber - 1);
return new ImageServerFramePixelData(result);
}
catch (Exception e)
{
throw TranslateStreamingException(e);
}
}
private RetrievePixelDataResult TryClientRetrievePixelData(out Exception lastRetrieveException)
{
// retry parameters
const int maxRetryCount = 10;
const int retryTimeout = 1500;
int retryDelay = 50;
int retryCounter = 0;
StreamingClient client = new StreamingClient(this.BaseUrl);
RetrievePixelDataResult result = null;
lastRetrieveException = null;
CodeClock timeoutClock = new CodeClock();
timeoutClock.Start();
while (true)
{
try
{
if (retryCounter > 0)
Platform.Log(LogLevel.Info, "Retrying retrieve pixel data for Sop '{0}' (Attempt #{1})", this.SopInstanceUid, retryCounter);
CodeClock statsClock = new CodeClock();
statsClock.Start();
result = client.RetrievePixelData(this.AETitle, this.StudyInstanceUid, this.SeriesInstanceUid, this.SopInstanceUid, this.FrameNumber - 1);
statsClock.Stop();
Platform.Log(LogLevel.Debug, "[Retrieve Info] Sop/Frame: {0}/{1}, Transfer Syntax: {2}, Bytes transferred: {3}, Elapsed (s): {4}, Retries: {5}",
this.SopInstanceUid, this.FrameNumber, this.TransferSyntaxUid,
result.MetaData.ContentLength, statsClock.Seconds, retryCounter);
break;
}
catch (Exception ex)
{
lastRetrieveException = ex;
timeoutClock.Stop();
if (timeoutClock.Seconds * 1000 >= retryTimeout || retryCounter>=maxRetryCount)
{
// log an alert that we are aborting (exception trace at debug level only)
int elapsed = (int)(1000*timeoutClock.Seconds);
Platform.Log(LogLevel.Warn, "Failed to retrieve pixel data for Sop '{0}'; Aborting after {1} attempts in {2} ms", this.SopInstanceUid, retryCounter, elapsed);
Platform.Log(LogLevel.Debug, ex, "[Retrieve Fail-Abort] Sop/Frame: {0}/{1}, Retry Attempts: {2}, Elapsed: {3} ms", this.SopInstanceUid, this.FrameNumber - 1, retryCounter, elapsed);
break;
}
timeoutClock.Start();
retryCounter++;
// log the retry (exception trace at debug level only)
Platform.Log(LogLevel.Warn, "Failed to retrieve pixel data for Sop '{0}'; Retrying in {1} ms", this.SopInstanceUid, retryDelay);
Platform.Log(LogLevel.Debug, ex, "[Retrieve Fail-Retry] Sop/Frame: {0}/{1}, Retry in: {2} ms", this.SopInstanceUid, this.FrameNumber - 1, retryDelay);
MemoryManager.Collect(retryDelay);
retryDelay *= 2;
if (retryDelay > MaxRetryDelay)
retryDelay = MaxRetryDelay; // cap it to avoid overflow, which will cause exception when calling MemoryManager.Collect()
}
}
return result;
}
public IFramePixelData LoadFramePixelData(LoadFramePixelDataArgs args)
{
try
{
var uri = new Uri(string.Format(StreamingSettings.Default.FormatWadoUriPrefix, _hostName, _wadoServicePort));
var client = new StreamingClient(uri);
var result = client.RetrievePixelData(_aeTitle, args.StudyInstanceUid, args.SeriesInstanceUid, args.SopInstanceUid, args.FrameNumber - 1);
return new ImageServerFramePixelData(result);
}
catch (Exception e)
{
throw TranslateStreamingException(e);
}
}
private static void RetrieveImages(string serverAE, string studyPath)
{
Console.WriteLine("server={0}", serverAE);
string baseUri = String.Format("http://{0}:{1}", serverHost, serverPort);
StreamingClient client = new StreamingClient(new Uri(baseUri));
int totalFrameCount = 0;
DirectoryInfo directoryInfo = new DirectoryInfo(studyPath);
string studyUid = directoryInfo.Name;
RateStatistics frameRate = new RateStatistics("Speed", "frame");
RateStatistics speed = new RateStatistics("Speed", RateType.BYTES);
AverageRateStatistics averageSpeed = new AverageRateStatistics(RateType.BYTES);
ByteCountStatistics totalSize = new ByteCountStatistics("Size");
frameRate.Start();
speed.Start();
Console.WriteLine("\n------------------------------------------------------------------------------------------------------------------------");
string[] seriesDirs = Directory.GetDirectories(studyPath);
foreach(string seriesPath in seriesDirs)
{
DirectoryInfo dirInfo = new DirectoryInfo(seriesPath);
string seriesUid = dirInfo.Name;
string[] objectUidPath = Directory.GetFiles(seriesPath, "*.dcm");
foreach (string uidPath in objectUidPath)
{
FileInfo fileInfo = new FileInfo(uidPath);
string uid = fileInfo.Name.Replace(".dcm", "");
Console.Write("{0,-64}... ", uid);
try
{
Stream imageStream;
StreamingResultMetaData imageMetaData;
FrameStreamingResultMetaData frameMetaData;
switch(type)
{
case ContentTypes.Dicom:
imageStream = client.RetrieveImage(serverAE, studyUid, seriesUid, uid, out imageMetaData);
totalFrameCount++;
averageSpeed.AddSample(imageMetaData.Speed);
totalSize.Value += (ulong)imageMetaData.ContentLength;
Console.WriteLine("1 dicom sop [{0,10}] in {1,12}\t[mime={2}]", ByteCountFormatter.Format((ulong)imageStream.Length), TimeSpanFormatter.Format(imageMetaData.Speed.ElapsedTime), imageMetaData.ResponseMimeType);
break;
case ContentTypes.RawPixel:
TimeSpanStatistics elapsedTime = new TimeSpanStatistics();
elapsedTime.Start();
ulong instanceSize = 0;
int frameCount = 0;
do
{
RetrievePixelDataResult result = client.RetrievePixelData(serverAE, studyUid, seriesUid, uid, frameCount);
frameMetaData = result.MetaData;
totalFrameCount++;
frameCount++;
averageSpeed.AddSample(frameMetaData.Speed);
totalSize.Value += (ulong)frameMetaData.ContentLength;
instanceSize += (ulong)frameMetaData.ContentLength;
} while (!frameMetaData.IsLast);
elapsedTime.End();
Console.WriteLine("{0,3} frame(s) [{1,10}] in {2,12}\t[mime={3}]", frameCount, ByteCountFormatter.Format(instanceSize), elapsedTime.FormattedValue, frameMetaData.ResponseMimeType);
break;
default:
imageStream = client.RetrieveImage(serverAE, studyUid, seriesUid, uid, out imageMetaData);
totalFrameCount++;
averageSpeed.AddSample(imageMetaData.Speed);
totalSize.Value += (ulong)imageMetaData.ContentLength;
Console.WriteLine("1 object [{0,10}] in {1,12}\t[mime={2}]", ByteCountFormatter.Format((ulong)imageStream.Length), TimeSpanFormatter.Format(imageMetaData.Speed.ElapsedTime), imageMetaData.ResponseMimeType);
break;
}
}
catch(Exception ex)
{
if (ex is WebException)
{
HttpWebResponse rsp = ( (ex as WebException).Response as HttpWebResponse);
string msg = String.Format("Error: {0} : {1}", rsp.StatusCode,HttpUtility.HtmlDecode(rsp.StatusDescription)
);
Console.WriteLine(msg);
}
else
{
Console.WriteLine(ex.Message);
}
}
}
}
frameRate.SetData(totalFrameCount);
frameRate.End();
speed.SetData(totalSize.Value);
speed.End();
Console.WriteLine("\nTotal {0,3} image(s)/frame(s) [{1,10}] in {2,12} ==> [ Speed: {3,12} or {4,12}]",
totalFrameCount, totalSize.FormattedValue,
TimeSpanFormatter.Format(frameRate.ElapsedTime),
frameRate.FormattedValue,
speed.FormattedValue
);
}