public void UpdateDicomFile(UpdateData updateData)
{
DicomFileFormat dicomFile = new DicomFileFormat();
dicomFile.Load(updateData.DicomFileName, DicomReadOptions.DeferLoadingLargeElements);
foreach (KeyValuePair <DicomTag, string> kvp in updateData.UpdateDataset)
{
dicomFile.Dataset.SetString(kvp.Key, kvp.Value);
}
foreach (KeyValuePair <DicomTag, string> kvp in updateData.UpdateMetadata)
{
dicomFile.FileMetaInfo.SetString(kvp.Key, kvp.Value);
}
dicomFile.Dataset.PreloadDeferredBuffers();
dicomFile.Save(updateData.DicomFileName, DicomWriteOptions.Default);
//if (updateData.DicomFileName != null)
//{
// string path = Path.GetDirectoryName(updateData.DicomFilePath);
// File.Move(updateData.DicomFilePath, path + @"\" + updateData.DicomFileName);
//}
}
/// <summary>Creates DICOM image object from file</summary>
/// <param name="fileName">Source file</param>
public DicomImage(string fileName)
{
DicomFileFormat ff = new DicomFileFormat();
ff.Load(fileName, DicomReadOptions.Default);
Load(ff.Dataset);
}
public void UpdateDicomFile(string updateFile, string dicomTag, string newValue)
{
try
{
DicomFileFormat dicomFile = new DicomFileFormat();
DicomTag updateDicomTag = DicomTag.Parse(dicomTag);
dicomFile.Load(updateFile, DicomReadOptions.DeferLoadingLargeElements);
string what = updateDicomTag.Entry.ToString();
if (updateDicomTag.Entry.ToString().StartsWith("0002"))
{
dicomFile.FileMetaInfo.SetString(updateDicomTag, newValue);
}
else
{
dicomFile.Dataset.SetString(updateDicomTag, newValue);
}
dicomFile.Dataset.PreloadDeferredBuffers();
dicomFile.Save(updateFile, DicomWriteOptions.Default);
}
catch (Exception e)
{
MessageBox.Show(e.ToString());
}
}
private void OnClickPixelDataMD5(object sender, EventArgs e)
{
if (_selected == -1)
{
return;
}
try {
DicomFileFormat ff = new DicomFileFormat();
ff.Load(_files[_selected], DicomReadOptions.Default |
DicomReadOptions.KeepGroupLengths |
DicomReadOptions.DeferLoadingLargeElements |
DicomReadOptions.DeferLoadingPixelData);
DcmPixelData pixels = new DcmPixelData(ff.Dataset);
if (pixels.NumberOfFrames == 0)
{
MessageBox.Show(this, "No pixel data", "Pixel Data MD5");
}
else if (pixels.NumberOfFrames >= 1)
{
MessageBox.Show(this, pixels.ComputeMD5(), String.Format("Pixel Data MD5 [{0} frames]", pixels.NumberOfFrames));
}
GC.Collect();
GC.WaitForPendingFinalizers();
GC.Collect();
} catch {
}
}
private void OnClickSaveWithTransferSyntax(object sender, EventArgs e)
{
if (_selected == -1)
{
return;
}
TransferSyntaxForm tsForm = new TransferSyntaxForm();
if (tsForm.ShowDialog(this) == DialogResult.OK)
{
SaveFileDialog sfd = new SaveFileDialog();
sfd.RestoreDirectory = true;
if (sfd.ShowDialog(this) == DialogResult.OK)
{
DicomFileFormat ff = new DicomFileFormat();
ff.Load(_files[_selected], DicomReadOptions.Default);
if (tsForm.SelectedTransferSyntax != null)
{
ff.ChangeTransferSyntax(tsForm.SelectedTransferSyntax, null);
}
ff.Save(sfd.FileName, DicomWriteOptions.Default);
}
}
}
internal CStoreRequestResult Send(CStoreClient client)
{
Load(client);
if (HasError)
{
if (client.Associate.FindAbstractSyntax(SOPClassUID) == 0)
{
client.Reassociate();
return(CStoreRequestResult.Reassociate);
}
}
if (client.OnCStoreRequestBegin != null)
{
client.OnCStoreRequestBegin(client, this);
}
if (HasError)
{
Status = DcmStatus.UnrecognizedOperation;
if (client.OnCStoreRequestFailed != null)
{
client.OnCStoreRequestFailed(client, this);
}
return(CStoreRequestResult.Failure);
}
byte pcid = client.Associate.FindAbstractSyntaxWithTransferSyntax(SOPClassUID, TransferSyntax);
if (pcid == 0)
{
client.Log.Info("{0} -> C-Store request failed: No accepted presentation context for {1}", client.LogID, SOPClassUID.Description);
Status = DcmStatus.SOPClassNotSupported;
if (client.OnCStoreRequestFailed != null)
{
client.OnCStoreRequestFailed(client, this);
}
return(CStoreRequestResult.Failure);
}
if (_dataset != null)
{
client.SendCStoreRequest(pcid, SOPInstanceUID, _dataset);
}
else
{
using (Stream s = DicomFileFormat.GetDatasetStream(FileName)) {
client.SendCStoreRequest(pcid, SOPInstanceUID, s);
s.Close();
}
}
if (client.OnCStoreRequestComplete != null)
{
client.OnCStoreRequestComplete(client, this);
}
return(CStoreRequestResult.Success);
}
public CStoreRequestInfo(string fileName, object userModel)
{
try {
_fileName = fileName;
if (!File.Exists(fileName))
{
throw new FileNotFoundException("Unable to load DICOM file!", fileName);
}
DicomTag stopTag = (userModel != null) ? DicomTags.PixelData : DcmFileMetaInfo.StopTag;
DicomFileFormat ff = new DicomFileFormat();
ff.Load(fileName, stopTag, DicomReadOptions.Default);
_transferSyntax = ff.FileMetaInfo.TransferSyntax;
_originalTransferSyntax = _transferSyntax;
_sopClass = ff.FileMetaInfo.MediaStorageSOPClassUID;
_sopInst = ff.FileMetaInfo.MediaStorageSOPInstanceUID;
if (userModel != null)
{
ff.Dataset.LoadDicomFields(userModel);
_userState = userModel;
}
_status = DcmStatus.Pending;
}
catch (Exception e) {
_status = DcmStatus.ProcessingFailure;
_exception = e;
throw;
}
}
private void UpdateImageBox(DcmImageBox imageBox, String filename, int index)
{
//try
//{
var ff = new DicomFileFormat();
ff.Load(filename, DicomReadOptions.DefaultWithoutDeferredLoading);
if (ff.Dataset == null)
{
return;
}
ff.Dataset.ChangeTransferSyntax(DicomTransferSyntax.ImplicitVRLittleEndian, null);
var pixelData = new DcmPixelData(ff.Dataset);
var pi = PhotometricInterpretation.Lookup(pixelData.PhotometricInterpretation);
// Grayscale only printer?
if (pi.IsColor && _supportsColorPrinting == false)
{
pixelData.Unload();
return;
}
// Color only printer?
if (pi.IsColor == false && _supportsGrayscalePrinting == false)
{
pixelData.Unload();
return;
}
DicomUID imageBoxSOPClassUID;
DcmItemSequence seq;
var item = new DcmItemSequenceItem();
pixelData.UpdateDataset(item.Dataset);
if (pi.IsColor)
{
imageBoxSOPClassUID = DicomUID.BasicColorImageBoxSOPClass;
seq = new DcmItemSequence(DicomTags.BasicColorImageSequence);
}
else
{
imageBoxSOPClassUID = DicomUID.BasicGrayscaleImageBoxSOPClass;
seq = new DcmItemSequence(DicomTags.BasicGrayscaleImageSequence);
}
seq.AddSequenceItem(item);
imageBox.Dataset.AddItem(seq);
pixelData.Unload();
imageBox.UpdateImageBox(imageBoxSOPClassUID);
imageBox.ImageBoxPosition = (ushort)index;
//}
//catch (Exception)
//{
//}
}
private TreeModel LoadFileFormat(DicomFileFormat ff)
{
TreeModel model = new TreeModel();
LoadDataset(ff.FileMetaInfo, model.Nodes);
LoadDataset(ff.Dataset, model.Nodes);
return(model);
}
private int getSeriesNumberFromDcm(string dcmFile)
{
int seriesNumber;
DicomFileFormat fileRead = new DicomFileFormat();
fileRead.Load(dcmFile, DicomReadOptions.DeferLoadingLargeElements);
seriesNumber = Convert.ToInt32(fileRead.Dataset.GetValueString(new DicomTag(DicomConstTags.SeriesNumber)));
fileRead = null;
return(seriesNumber);
}
//extract identifier(UID) from file
private String getIdentifier(FileStream fs)
{
String identifier = String.Empty;
try
{
DicomFileFormat dff = new DicomFileFormat();
dff.Load(fs, DicomReadOptions.Default);
identifier = dff.Dataset.GetValueString(DicomTags.SOPInstanceUID);
}
catch (Exception e) { Console.WriteLine(e); }
return(identifier);
}
/// <summary>
/// Asynchronously read DICOM file object.
/// </summary>
/// <param name="source">Byte source to read.</param>
/// <param name="fileMetaInfo">Reader observer for file meta information.</param>
/// <param name="dataset">Reader observer for dataset.</param>
/// <param name="stop">Stop criterion in dataset.</param>
/// <returns>Awaitable reader result.</returns>
public async Task <DicomReaderResult> ReadAsync(
IByteSource source,
IDicomReaderObserver fileMetaInfo,
IDicomReaderObserver dataset,
Func <ParseState, bool> stop = null)
{
var parse = await ParseAsync(source, fileMetaInfo, dataset, stop).ConfigureAwait(false);
lock (this.locker)
{
this.fileFormat = parse.Item2;
this.syntax = parse.Item3;
}
return(parse.Item1);
}
/// <summary>
/// Read DICOM file object.
/// </summary>
/// <param name="source">Byte source to read.</param>
/// <param name="fileMetaInfo">Reader observer for file meta information.</param>
/// <param name="dataset">Reader observer for dataset.</param>
/// <param name="stop">Stop criterion in dataset.</param>
/// <returns>Reader result.</returns>
public DicomReaderResult Read(
IByteSource source,
IDicomReaderObserver fileMetaInfo,
IDicomReaderObserver dataset,
Func <ParseState, bool> stop = null)
{
var parse = Parse(source, fileMetaInfo, dataset, stop);
lock (this.locker)
{
this.fileFormat = parse.Item2;
this.syntax = parse.Item3;
}
return(parse.Item1);
}
public List <Dictionary <string, string> > getDicomElementInfo(string fileName, string dirPath)
{
try
{
DicomFileFormat dff = new DicomFileFormat();
List <Dictionary <string, string> > elements = new List <Dictionary <string, string> >();
string loadPath = dirPath + "\\" + fileName;
dff.Load(loadPath, DicomReadOptions.DeferLoadingLargeElements);
foreach (DcmItem di in dff.Dataset.Elements)
{
Dictionary <string, string> elementData = new Dictionary <string, string>();
elementData.Add("Name", di.Name.ToString());
elementData.Add("Tag", di.Tag.ToString());
if (dff.Dataset.GetValueString(di.Tag) != "")
{
elementData.Add("Value", dff.Dataset.GetValueString(di.Tag));
}
else
{
elementData.Add("Value", "--Null--");
}
elements.Add(elementData);
}
foreach (DcmItem di in dff.FileMetaInfo.Elements)
{
Dictionary <string, string> elementData = new Dictionary <string, string>();
elementData.Add("Name", di.Name.ToString());
elementData.Add("Tag", di.Tag.ToString());
if (dff.FileMetaInfo.GetValueString(di.Tag) != "")
{
elementData.Add("Value", dff.FileMetaInfo.GetValueString(di.Tag));
}
else
{
elementData.Add("Value", "--Null--");
}
elements.Add(elementData);
}
return(elements);
}
catch (Exception e)
{
string error = e.ToString();
return(null);
}
}
private void LoadButtonClick(object sender, RoutedEventArgs e)
{
OpenFileDialog dlg = Resources["dicomFileDialog"] as OpenFileDialog;
if (dlg != null && dlg.ShowDialog().GetValueOrDefault())
{
using (var memStream = new MemoryStream())
{
using (var fileStream = dlg.OpenFile())
{
fileStream.CopyTo(memStream);
}
var ff = new DicomFileFormat();
ff.Load(memStream, DicomReadOptions.Default);
DumpDisplayDataset(dlg.FileName, ff.Dataset);
}
}
}
private void ExtractMetaData(FileStream fs, DicomInfo dicom)
{
DicomFileFormat dff = new DicomFileFormat();
dff.Load(fs, DicomReadOptions.Default);
dicom.patientName = dff.Dataset.GetValueString(DicomTags.PatientsName);
dicom.studyUID = dff.Dataset.GetValueString(DicomTags.StudyInstanceUID);
dicom.seriesUID = dff.Dataset.GetValueString(DicomTags.SeriesInstanceUID);
dicom.imageUID = dff.Dataset.GetValueString(DicomTags.SOPInstanceUID);
dicom.sex = dff.Dataset.GetValueString(DicomTags.PatientsSex);
dicom.pBday = dff.Dataset.GetValueString(DicomTags.PatientsBirthDate);
dicom.age = dff.Dataset.GetValueString(DicomTags.PatientsAge);
dicom.imgNumber = dff.Dataset.GetValueString(DicomTags.InstanceNumber);
dicom.modality = dff.Dataset.GetValueString(DicomTags.Modality);
dicom.bodyPart = dff.Dataset.GetValueString(DicomTags.BodyPartExamined);
dicom.studyDesc = dff.Dataset.GetValueString(DicomTags.StudyDescription);
dicom.seriesDesc = dff.Dataset.GetValueString(DicomTags.SeriesDescription);
dicom.sliceThickness = dff.Dataset.GetValueString(DicomTags.SliceThickness);
}
private static void CheckDICOMFile(FileInfo FI, TextWriter output, List <DicomTag> DicomTagsToCheck, Dictionary <DicomTag, List <String> > tagTovalues)
{
//output.WriteLine("Checking: " + FI.FullName);
var dcmFile = new DicomFileFormat();
var dcmFileName = FI.FullName;
if (dcmFile.Load(dcmFileName, DicomReadOptions.Default) == DicomReadStatus.Success)
{
var sb = new StringBuilder();
if (dcmFile.Dataset != null)
{
foreach (var DT in DicomTagsToCheck)
{
var Element = dcmFile.Dataset.GetElement(DT);
if (Element != null)
{
var ElementValue = Element.GetValueString();
if (ElementValue != null && ElementValue.Length != 0)
{
//output.WriteLine(Element + " = " + ElementValue);
addValue(tagTovalues, DT, ElementValue);
}
}
}
}
else
{
Console.WriteLine("dcm2txt: Missing dataset in DICOM file '{0}'.", dcmFileName);
return;
}
//output.WriteLine(sb.ToString());
}
else
{
Console.WriteLine("dcm2txt: '{0}' does not appear to be a DICOM file.", dcmFileName);
return;
}
}
private void fileNameButton_Click(object sender, RoutedEventArgs e)
{
OpenFileDialog dlg = Resources["dicomFileDialog"] as OpenFileDialog;
if (dlg != null && dlg.ShowDialog().GetValueOrDefault())
{
using (var memStream = new MemoryStream())
{
using (var fileStream = dlg.File.OpenRead())
{
fileStream.CopyTo(memStream);
}
DicomFileFormat ff = new DicomFileFormat();
ff.Load(memStream, DicomReadOptions.Default);
if (ff.Dataset != null)
{
StringBuilder sb = new StringBuilder();
ff.Dataset.Dump(sb, String.Empty, DicomDumpOptions.Default);
RawDump = sb.ToString();
var xmlDoc = XDicom.ToXML(ff.Dataset, XDicomOptions.None);
var txtWriter = new StringWriter();
xmlDoc.Save(txtWriter);
XmlDump = txtWriter.ToString();
DicomImage = ff.Dataset.Contains(DicomTags.PixelData)
? GetImageSource(ff.Dataset)
: null;
}
else
{
RawDump = XmlDump = String.Format(Resources["noDicomFileDataMsg"].ToString(), dlg.File.Name);
DicomImage = null;
}
}
UpdateLog();
}
}
private bool LoadFile(string file)
{
bool success = false;
DicomFileFormat ff = new DicomFileFormat();
try {
ClearDump();
ff.Load(file, DicomReadOptions.Default | DicomReadOptions.KeepGroupLengths);
success = true;
}
catch (Exception e) {
MessageBox.Show(e.Message + "\n\n" + file, "Error parsing file!", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
treeDump.Model = LoadFileFormat(ff);
treeDump.ExpandAll();
if (success)
{
if (ff.Dataset.Contains(DicomTags.PixelData))
{
tsbViewImage.Enabled = true;
tsbExtractPixels.Enabled = true;
tsbPixelDataMD5.Enabled = true;
}
tsbSaveTS.Enabled = true;
}
else
{
tsbViewImage.Enabled = false;
tsbExtractPixels.Enabled = false;
tsbSaveTS.Enabled = false;
tsbPixelDataMD5.Enabled = false;
}
return(success);
}
private static void UpdateFileFormatAndSyntax(
string code,
string uid,
ref DicomFileFormat fileFormat,
ref DicomTransferSyntax syntax)
{
if (code != null)
{
if (code == "ACR-NEMA 1.0")
{
fileFormat = DicomFileFormat.ACRNEMA1;
}
else if (code == "ACR-NEMA 2.0")
{
fileFormat = DicomFileFormat.ACRNEMA2;
}
}
if (uid != null)
{
syntax = DicomTransferSyntax.Parse(uid);
}
}
private void OnClickExtractPixels(object sender, EventArgs e)
{
if (_selected == -1)
{
return;
}
try {
DicomFileFormat ff = new DicomFileFormat();
ff.Load(_files[_selected], DicomReadOptions.Default |
DicomReadOptions.KeepGroupLengths |
DicomReadOptions.DeferLoadingLargeElements |
DicomReadOptions.DeferLoadingPixelData);
DcmPixelData pixels = new DcmPixelData(ff.Dataset);
if (pixels.NumberOfFrames == 0)
{
return;
}
else if (pixels.NumberOfFrames >= 1)
{
SaveFileDialog sfd = new SaveFileDialog();
sfd.RestoreDirectory = true;
if (sfd.ShowDialog(this) == DialogResult.OK)
{
byte[] data = pixels.GetFrameDataU8(0);
File.WriteAllBytes(sfd.FileName, data);
}
}
GC.Collect();
GC.WaitForPendingFinalizers();
GC.Collect();
}
catch {
}
}
static void Test(string relativePath)
{
try
{
using (var stream = OpenRead(relativePath))
{
var input = new BufferedStreamReader(stream);
if (DicomFileFormat.TryReadHeader(input, out DicomFileMetaInformation fileMetaInformation))
{
Console.WriteLine($"SOPClassUID = {fileMetaInformation.MediaStorageSOPClassUID}");
Console.WriteLine($"TransferSyntax = {(DicomUID)fileMetaInformation.TransferSyntaxUID}");
Console.WriteLine(JsonSerializer.Serialize(fileMetaInformation, new JsonSerializerOptions
{
WriteIndented = true
}));
var xmlOutputPath = $"{stream.Name}.xml";
Console.WriteLine($"Writing dataset to {xmlOutputPath}");
var dataSet = new XElement("DicomDataSet");
dataSet.SetAttributeValue("Source", stream.Name);
var dataSetReader = DicomStreamReader.Create(input, fileMetaInformation.TransferSyntaxUID);
dataSetReader.ReadDataSet(dataSet, new DicomToXmlConverter());
dataSet.Save(xmlOutputPath);
}
else
{
Console.WriteLine($"Skipped");
}
}
}
catch (Exception error)
{
Console.WriteLine($"ERROR: {error.Message}");
}
}
private static void Preprocess(
IByteSource source,
ref DicomFileFormat fileFormat,
ref DicomTransferSyntax syntax)
{
// mark file origin
source.Mark();
// test for DICM preamble
source.Skip(128);
if (source.GetUInt8() == 'D' && source.GetUInt8() == 'I' && source.GetUInt8() == 'C' &&
source.GetUInt8() == 'M')
{
fileFormat = DicomFileFormat.DICOM3;
}
// test for incorrect syntax in file meta info
do
{
if (fileFormat == DicomFileFormat.DICOM3)
{
// move milestone to after preamble
source.Mark();
}
else
{
// rewind to origin milestone
source.Rewind();
}
// test for file meta info
var group = source.GetUInt16();
if (@group > 0x00ff)
{
source.Endian = Endian.Big;
syntax = DicomTransferSyntax.ExplicitVRBigEndian;
@group = Endian.Swap(@group);
}
if (@group > 0x00ff)
{
// invalid starting tag
fileFormat = DicomFileFormat.Unknown;
source.Rewind();
break;
}
if (fileFormat == DicomFileFormat.Unknown)
{
fileFormat = @group == 0x0002
? DicomFileFormat.DICOM3NoPreamble
: DicomFileFormat.DICOM3NoFileMetaInfo;
}
var element = source.GetUInt16();
var tag = new DicomTag(@group, element);
// test for explicit VR
var vrt = Encoding.UTF8.GetBytes(tag.DictionaryEntry.ValueRepresentations[0].Code);
var vrs = source.GetBytes(2);
if (vrt[0] != vrs[0] || vrt[1] != vrs[1])
{
// implicit VR
syntax = syntax.Endian == Endian.Little
? DicomTransferSyntax.ImplicitVRLittleEndian
: DicomTransferSyntax.ImplicitVRBigEndian;
}
source.Rewind();
}while (fileFormat == DicomFileFormat.Unknown);
if (fileFormat == DicomFileFormat.Unknown)
{
throw new DicomReaderException("Attempted to read invalid DICOM file");
}
// Adopt transfer syntax endianess to byte source.
source.Endian = syntax.Endian;
}
public DicomFileReader() {
_reader = new DicomReader();
_fileFormat = DicomFileFormat.Unknown;
_syntax = DicomTransferSyntax.ExplicitVRLittleEndian;
}
/// <summary>
/// Initializes a new instance of <see cref="DicomFileReader"/>.
/// </summary>
public DicomFileReader()
{
this.fileFormat = DicomFileFormat.Unknown;
this.syntax = null;
this.locker = new object();
}
private void ParsePreamble(IByteSource source, object state) {
try {
if (!source.Require(132, ParsePreamble, state))
return;
// mark file origin
_source.Mark();
// test for DICM preamble
_source.Skip(128);
if (_source.GetUInt8() == 'D' &&
_source.GetUInt8() == 'I' &&
_source.GetUInt8() == 'C' &&
_source.GetUInt8() == 'M')
_fileFormat = DicomFileFormat.DICOM3;
// test for incorrect syntax in file meta info
do {
if (_fileFormat == DicomFileFormat.DICOM3) {
// move milestone to after preamble
_source.Mark();
} else {
// rewind to origin milestone
_source.Rewind();
}
// test for file meta info
var group = _source.GetUInt16();
if (group > 0x00ff) {
_source.Endian = Endian.Big;
_syntax = DicomTransferSyntax.ExplicitVRBigEndian;
group = Endian.Swap(group);
}
if (group > 0x00ff) {
// invalid starting tag
_fileFormat = DicomFileFormat.Unknown;
_source.Rewind();
break;
}
if (_fileFormat == DicomFileFormat.Unknown) {
if (group == 0x0002)
_fileFormat = DicomFileFormat.DICOM3NoPreamble;
else
_fileFormat = DicomFileFormat.DICOM3NoFileMetaInfo;
}
var element = _source.GetUInt16();
var tag = new DicomTag(group, element);
// test for explicit VR
var vrt = Encoding.UTF8.GetBytes(tag.DictionaryEntry.ValueRepresentations[0].Code);
var vrs = _source.GetBytes(2);
if (vrt[0] != vrs[0] || vrt[1] != vrs[1]) {
// implicit VR
if (_syntax.Endian == Endian.Little)
_syntax = DicomTransferSyntax.ImplicitVRLittleEndian;
else
_syntax = DicomTransferSyntax.ImplicitVRBigEndian;
}
_source.Rewind();
} while (_fileFormat == DicomFileFormat.Unknown);
if (_fileFormat == DicomFileFormat.Unknown)
throw new DicomReaderException("Attempted to read invalid DICOM file");
var obs = new DicomReaderCallbackObserver();
if (_fileFormat != DicomFileFormat.DICOM3) {
obs.Add(DicomTag.RecognitionCodeRETIRED, (object sender, DicomReaderEventArgs ea) => {
try {
string code = Encoding.UTF8.GetString(ea.Data.Data, 0, ea.Data.Data.Length);
if (code == "ACR-NEMA 1.0")
_fileFormat = DicomFileFormat.ACRNEMA1;
else if (code == "ACR-NEMA 2.0")
_fileFormat = DicomFileFormat.ACRNEMA2;
} catch {
}
});
}
obs.Add(DicomTag.TransferSyntaxUID, (object sender, DicomReaderEventArgs ea) => {
try {
string uid = Encoding.UTF8.GetString(ea.Data.Data, 0, ea.Data.Data.Length);
_syntax = DicomTransferSyntax.Parse(uid);
} catch {
}
});
_source.Endian = _syntax.Endian;
_reader.IsExplicitVR = _syntax.IsExplicitVR;
if (_fileFormat == DicomFileFormat.DICOM3NoFileMetaInfo)
_reader.BeginRead(_source, new DicomReaderMultiObserver(obs, _dataObserver), null, OnDatasetParseComplete, null);
else
_reader.BeginRead(_source, new DicomReaderMultiObserver(obs, _fmiObserver), FileMetaInfoStopTag, OnFileMetaInfoParseComplete, null);
} catch (Exception e) {
if (_exception == null)
_exception = e;
_result = DicomReaderResult.Error;
} finally {
if (_result != DicomReaderResult.Processing && _result != DicomReaderResult.Suspended) {
_async.Set();
}
}
}
public DicomFileReader()
{
_reader = new DicomReader();
_fileFormat = DicomFileFormat.Unknown;
_syntax = DicomTransferSyntax.ExplicitVRLittleEndian;
}
private void ParsePreamble(IByteSource source, object state)
{
try {
if (!source.Require(132, ParsePreamble, state))
{
return;
}
// mark file origin
_source.Mark();
// test for DICM preamble
_source.Skip(128);
if (_source.GetUInt8() == 'D' &&
_source.GetUInt8() == 'I' &&
_source.GetUInt8() == 'C' &&
_source.GetUInt8() == 'M')
{
_fileFormat = DicomFileFormat.DICOM3;
}
// test for incorrect syntax in file meta info
do
{
if (_fileFormat == DicomFileFormat.DICOM3)
{
// move milestone to after preamble
_source.Mark();
}
else
{
// rewind to origin milestone
_source.Rewind();
}
// test for file meta info
var group = _source.GetUInt16();
if (group > 0x00ff)
{
_source.Endian = Endian.Big;
_syntax = DicomTransferSyntax.ExplicitVRBigEndian;
group = Endian.Swap(group);
}
if (group > 0x00ff)
{
// invalid starting tag
_fileFormat = DicomFileFormat.Unknown;
_source.Rewind();
break;
}
if (_fileFormat == DicomFileFormat.Unknown)
{
if (group == 0x0002)
{
_fileFormat = DicomFileFormat.DICOM3NoPreamble;
}
else
{
_fileFormat = DicomFileFormat.DICOM3NoFileMetaInfo;
}
}
var element = _source.GetUInt16();
var tag = new DicomTag(group, element);
// test for explicit VR
var vrt = Encoding.ASCII.GetBytes(tag.DictionaryEntry.ValueRepresentations[0].Code);
var vrs = _source.GetBytes(2);
if (vrt[0] != vrs[0] || vrt[1] != vrs[1])
{
// implicit VR
if (_syntax.Endian == Endian.Little)
{
_syntax = DicomTransferSyntax.ImplicitVRLittleEndian;
}
else
{
_syntax = DicomTransferSyntax.ImplicitVRBigEndian;
}
}
_source.Rewind();
} while (_fileFormat == DicomFileFormat.Unknown);
if (_fileFormat == DicomFileFormat.Unknown)
{
throw new DicomReaderException("Attempted to read invalid DICOM file");
}
var obs = new DicomReaderCallbackObserver();
if (_fileFormat != DicomFileFormat.DICOM3)
{
obs.Add(DicomTag.RecognitionCodeRETIRED, (object sender, DicomReaderEventArgs ea) => {
try {
string code = Encoding.ASCII.GetString(ea.Data.Data);
if (code == "ACR-NEMA 1.0")
{
_fileFormat = DicomFileFormat.ACRNEMA1;
}
else if (code == "ACR-NEMA 2.0")
{
_fileFormat = DicomFileFormat.ACRNEMA2;
}
} catch {
}
});
}
obs.Add(DicomTag.TransferSyntaxUID, (object sender, DicomReaderEventArgs ea) => {
try {
string uid = Encoding.ASCII.GetString(ea.Data.Data);
_syntax = DicomTransferSyntax.Parse(uid);
} catch {
}
});
_source.Endian = _syntax.Endian;
_reader.IsExplicitVR = _syntax.IsExplicitVR;
if (_fileFormat == DicomFileFormat.DICOM3NoFileMetaInfo)
{
_reader.BeginRead(_source, new DicomReaderMultiObserver(obs, _dataObserver), null, OnDatasetParseComplete, null);
}
else
{
_reader.BeginRead(_source, new DicomReaderMultiObserver(obs, _fmiObserver), FileMetaInfoStopTag, OnFileMetaInfoParseComplete, null);
}
} catch (Exception e) {
if (_exception == null)
{
_exception = e;
}
_result = DicomReaderResult.Error;
} finally {
if (_result != DicomReaderResult.Processing && _result != DicomReaderResult.Suspended)
{
_async.Set();
}
}
}
public string MakeGreyDicom(byte[] greybytes, ushort imgwidth, ushort imgheight)
{
DcmUID studyUid = DcmUID.Generate();
DcmUID seriesUid = DcmUID.Generate(studyUid, 1);
DcmUID instUid = DcmUID.Generate(seriesUid, 1);
DcmDataset data = new DcmDataset(DcmTS.ExplicitVRBigEndian); //.ImplicitVRLittleEndian ok
data.AddElementWithValue(DcmTags.SOPClassUID, DcmUIDs.CTImageStorage); //ComputedRadiographyImageStorage ok
//data.AddElementWithValue(DcmTags.SOPClassUID, DcmUIDs .SecondaryCapture);
data.AddElementWithValue(DcmTags.StudyInstanceUID, studyUid);
data.AddElementWithValue(DcmTags.SeriesInstanceUID, seriesUid);
data.AddElementWithValue(DcmTags.SOPInstanceUID, instUid);//"1.3.6.1.4.1.30071.6.635719267134010719.1.1"
//data.AddElementWithValue(DcmTags.MediaStorageSOPClassUID, DcmUIDs.ImplicitVRLittleEndian);
//data.AddElementWithValueString(DcmTags.MediaStorageSOPClassUID, DcmUIDs.ComputedRadiographyImageStorage.ToString());
//type 2 attributes
////data.AddElement(DcmTags.PrinterStatus);
if (tags.ContainsKey("0010,0020"))
{
data.AddElementWithValueString(DcmTags.PatientID, tags["0010,0020"].Substring(5));
}
if (tags.ContainsKey("0010,0010"))
{
data.AddElementWithValueString(DcmTags.PatientsName, tags["0010,0010"].Substring(5));
}
if (tags.ContainsKey("0010,0030"))
{
data.AddElementWithValueString(DcmTags.PatientsBirthDate, tags["0010,0030"].Substring(5));
}
if (tags.ContainsKey("0010,0040"))
{
data.AddElementWithValueString(DcmTags.PatientsSex, tags["0010,0040"].Substring(5));
}
if (tags.ContainsKey("0010,1010"))
{
data.AddElementWithValueString(DcmTags.PatientsAge, tags["0010,1010"].Substring(5));
}
if (tags.ContainsKey("0008,0005"))
{
data.AddElementWithValueString(DcmTags.SpecificCharacterSet, tags["0008,0005"].Substring(5));
}
if (tags.ContainsKey("0008,0008"))
{
data.AddElementWithValueString(DcmTags.ImageType, tags["0008,0008"].Substring(5));
}
//if (tags.ContainsKey("0008,0016"))
// data.AddElementWithValueString(DcmTags.ContentTime, DateTime.Now.ToString());
//if (tags.ContainsKey("0008,0018"))
// data.AddElementWithValueString(DcmTags.ContentTime, DateTime.Now.ToString());
if (tags.ContainsKey("0008,0020"))
{
data.AddElementWithValueString(DcmTags.StudyDate, tags["0008,0020"].Substring(5));
}
if (tags.ContainsKey("0008,0021"))
{
data.AddElementWithValueString(DcmTags.SeriesDate, tags["0008,0021"].Substring(5));
}
if (tags.ContainsKey("0008,0022"))
{
data.AddElementWithValueString(DcmTags.AcquisitionDate, tags["0008,0022"].Substring(5));
}
if (tags.ContainsKey("0008,0023"))
{
data.AddElementWithValueString(DcmTags.ContentDate, tags["0008,0023"].Substring(5));
}
if (tags.ContainsKey("0008,002a"))
{
data.AddElementWithValueString(DcmTags.AcquisitionDateTime, tags["0008,002a"].Substring(5));
}
if (tags.ContainsKey("0008,0030"))
{
data.AddElementWithValueString(DcmTags.StudyTime, tags["0008,0030"].Substring(5));
}
if (tags.ContainsKey("0008,0031"))
{
data.AddElementWithValueString(DcmTags.SeriesTime, tags["0008,0031"].Substring(5));
}
if (tags.ContainsKey("0008,0032"))
{
data.AddElementWithValueString(DcmTags.AcquisitionTime, tags["0008,0032"].Substring(5));
}
if (tags.ContainsKey("0008,0033"))
{
data.AddElementWithValueString(DcmTags.ContentTime, tags["0008,0033"].Substring(5));
}
if (tags.ContainsKey("0008,0050"))
{
data.AddElementWithValueString(DcmTags.AcquisitionNumber, tags["0008,0050"].Substring(5));
}
if (tags.ContainsKey("0008,0060"))
{
data.AddElementWithValueString(DcmTags.Modality, tags["0008,0060"].Substring(5));
}
if (tags.ContainsKey("0008,0070"))
{
data.AddElementWithValueString(DcmTags.Manufacturer, tags["0008,0070"].Substring(5));
}
if (tags.ContainsKey("0008,0080"))
{
data.AddElementWithValueString(DcmTags.InstitutionName, tags["0008,0080"].Substring(5));
}
if (tags.ContainsKey("0008,0081"))
{
data.AddElementWithValueString(DcmTags.InstitutionAddress, tags["0008,0081"].Substring(5));
}
if (tags.ContainsKey("0008,0090"))
{
data.AddElementWithValueString(DcmTags.ReferringPhysiciansName, tags["0008,0090"].Substring(5));
}
if (tags.ContainsKey("0008,1010"))
{
data.AddElementWithValueString(DcmTags.StationName, tags["0008,1010"].Substring(5));
}
if (tags.ContainsKey("0008,1030"))
{
data.AddElementWithValueString(DcmTags.StudyDescription, tags["0008,1030"].Substring(5));
}
if (tags.ContainsKey("0008,103e"))
{
data.AddElementWithValueString(DcmTags.SeriesDescription, tags["0008,103e"].Substring(5));
}
if (tags.ContainsKey("0008,1090"))
{
data.AddElementWithValueString(DcmTags.ManufacturersModelName, tags["0008,1090"].Substring(5));
}
if (tags.ContainsKey("0018,0010"))
{
data.AddElementWithValueString(DcmTags.ContrastBolusAgent, tags["0018,0010"].Substring(5));
}
if (tags.ContainsKey("0018,0015"))
{
data.AddElementWithValueString(DcmTags.BodyPartExamined, tags["0018,0015"].Substring(5));
}
if (tags.ContainsKey("0018,0050"))
{
data.AddElementWithValueString(DcmTags.SliceThickness, tags["0018,0050"].Substring(5));
}
if (tags.ContainsKey("0018,0060"))
{
data.AddElementWithValueString(DcmTags.KVP, tags["0018,0060"].Substring(5));
}
if (tags.ContainsKey("0018,0090"))
{
data.AddElementWithValueString(DcmTags.DataCollectionDiameter, tags["0018,0090"].Substring(5));
}
if (tags.ContainsKey("0018,1000"))
{
data.AddElementWithValueString(DcmTags.DeviceSerialNumber, tags["0018,1000"].Substring(5));
}
if (tags.ContainsKey("0018,1020"))
{
data.AddElementWithValueString(DcmTags.SoftwareVersions, tags["0018,1020"].Substring(5));
}
if (tags.ContainsKey("0018,1030"))
{
data.AddElementWithValueString(DcmTags.ProtocolName, tags["0018,1030"].Substring(5));
}
if (tags.ContainsKey("0018,1041"))
{
data.AddElementWithValueString(DcmTags.ContrastBolusVolume, tags["0018,1041"].Substring(5));
}
if (tags.ContainsKey("0018,1042"))
{
data.AddElementWithValueString(DcmTags.ContrastBolusStartTime, tags["0018,1042"].Substring(5));
}
if (tags.ContainsKey("0018,1043"))
{
data.AddElementWithValueString(DcmTags.ContrastBolusStopTime, tags["0018,1043"].Substring(5));
}
if (tags.ContainsKey("0018,1044"))
{
data.AddElementWithValueString(DcmTags.ContrastBolusTotalDose, tags["0018,1044"].Substring(5));
}
if (tags.ContainsKey("0018,1046"))
{
data.AddElementWithValueString(DcmTags.ContrastFlowRate, tags["0018,1046"].Substring(5));
}
if (tags.ContainsKey("0018,1047"))
{
data.AddElementWithValueString(DcmTags.ContrastFlowDuration, tags["0018,1047"].Substring(5));
}
if (tags.ContainsKey("0018,1049"))
{
data.AddElementWithValueString(DcmTags.ContrastBolusIngredientConcentration, tags["0018,1049"].Substring(5));
}
if (tags.ContainsKey("0018,1100"))
{
data.AddElementWithValueString(DcmTags.ReconstructionDiameter, tags["0018,1100"].Substring(5));
}
if (tags.ContainsKey("0018,1110"))
{
data.AddElementWithValueString(DcmTags.DistanceSourceToDetector, tags["0018,1110"].Substring(5));
}
if (tags.ContainsKey("0018,1111"))
{
data.AddElementWithValueString(DcmTags.DistanceSourceToPatient, tags["0018,1111"].Substring(5));
}
if (tags.ContainsKey("0018,1120"))
{
data.AddElementWithValueString(DcmTags.GantryDetectorTilt, tags["0018,1120"].Substring(5));
}
if (tags.ContainsKey("0018,1130"))
{
data.AddElementWithValueString(DcmTags.TableHeight, tags["0018,1130"].Substring(5));
}
if (tags.ContainsKey("0018,1140"))
{
data.AddElementWithValueString(DcmTags.RotationDirection, tags["0018,1140"].Substring(5));
}
if (tags.ContainsKey("0018,1150"))
{
data.AddElementWithValueString(DcmTags.ExposureTime, tags["0018,1150"].Substring(5));
}
if (tags.ContainsKey("0018,1151"))
{
data.AddElementWithValueString(DcmTags.XRayTubeCurrent, tags["0018,1151"].Substring(5));
}
if (tags.ContainsKey("0018,1152"))
{
data.AddElementWithValueString(DcmTags.Exposure, tags["0018,1152"].Substring(5));
}
if (tags.ContainsKey("0018,1160"))
{
data.AddElementWithValueString(DcmTags.FilterType, tags["0018,1160"].Substring(5));
}
if (tags.ContainsKey("0018,1170"))
{
data.AddElementWithValueString(DcmTags.GeneratorPower, tags["0018,1170"].Substring(5));
}
if (tags.ContainsKey("0018,1190"))
{
data.AddElementWithValueString(DcmTags.FocalSpots, tags["0018,1190"].Substring(5));
}
if (tags.ContainsKey("0018,1200"))
{
data.AddElementWithValueString(DcmTags.DateOfLastCalibration, tags["0018,1200"].Substring(5));
}
if (tags.ContainsKey("0018,1201"))
{
data.AddElementWithValueString(DcmTags.TimeOfLastCalibration, tags["0018,1201"].Substring(5));
}
if (tags.ContainsKey("0018,1210"))
{
data.AddElementWithValueString(DcmTags.ConvolutionKernel, tags["0018,1210"].Substring(5));
}
if (tags.ContainsKey("0018,5100"))
{
data.AddElementWithValueString(DcmTags.PatientPosition, tags["0018,5100"].Substring(5));
}
//if (tags.ContainsKey("0020,000D"))
// data.AddElementWithValueString(DcmTags.ContrastBolusStopTime, DateTime.Now.ToString());
//if (tags.ContainsKey("0020,000E"))
// data.AddElementWithValueString(DcmTags.ContrastBolusStopTime, DateTime.Now.ToString());
if (tags.ContainsKey("0020,0010"))
{
data.AddElementWithValueString(DcmTags.StudyID, tags["0020,0010"].Substring(5));
}
if (tags.ContainsKey("0020,0011"))
{
data.AddElementWithValueString(DcmTags.SeriesNumber, tags["0020,0011"].Substring(5));
}
if (tags.ContainsKey("0020,0012"))
{
data.AddElementWithValueString(DcmTags.AccessionNumber, tags["0020,0012"].Substring(5));
}
if (tags.ContainsKey("0020,0013"))
{
data.AddElementWithValueString(DcmTags.InstanceNumber, tags["0020,0013"].Substring(5));
}
if (tags.ContainsKey("0020,0032"))
{
data.AddElementWithValueString(DcmTags.ImagePositionPatient, tags["0020,0032"].Substring(5));
}
if (tags.ContainsKey("0020,0037"))
{
data.AddElementWithValueString(DcmTags.ImageOrientationPatient, tags["0020,0037"].Substring(5));
}
if (tags.ContainsKey("0020,0052"))
{
data.AddElementWithValueString(DcmTags.FrameOfReferenceUID, tags["0020,0052"].Substring(5));
}
if (tags.ContainsKey("0020,1040"))
{
data.AddElementWithValueString(DcmTags.PositionReferenceIndicator, tags["0020,1040"].Substring(5));
}
if (tags.ContainsKey("0020,1041"))
{
data.AddElementWithValueString(DcmTags.SliceLocation, tags["0020,1041"].Substring(5));
}
if (tags.ContainsKey("0020,4000"))
{
data.AddElementWithValueString(DcmTags.ImageComments, tags["0020,4000"].Substring(5));
}
//data.AddElementWithValueString(DcmTags.StudyTime, DateTime.Now.ToString());
//data.AddElementWithValueString(DcmTags.AccessionNumber, "");
//data.AddElementWithValueString(DcmTags.ReferringPhysiciansName, "");
//data.AddElementWithValueString(DcmTags.StudyID, "1");
//data.AddElementWithValueString(DcmTags.SeriesNumber, "1");
//data.AddElementWithValueString(DcmTags.ModalitiesInStudy, "CT");//CR
//data.AddElementWithValueString(DcmTags.Modality, "CT");//CR
//data.AddElementWithValueString(DcmTags.NumberOfStudyRelatedInstances, "1");
//data.AddElementWithValueString(DcmTags.NumberOfStudyRelatedSeries, "1");
//data.AddElementWithValueString(DcmTags.NumberOfSeriesRelatedInstances, "1");
//data.AddElementWithValueString(DcmTags.PatientOrientation, "HFS");//F/A
//data.AddElementWithValueString(DcmTags.ImageLaterality, "U");
if (tags.ContainsKey("0028,1050"))
{
data.AddElementWithValueString(DcmTags.WindowCenter, "1113");
}
if (tags.ContainsKey("0028,1051"))
{
data.AddElementWithValueString(DcmTags.WindowWidth, "749");
}
//data.AddElementWithValueString(DcmTags.WindowCenterWidthExplanation, "WINDOW1\\WINDOW2");
data.AddElementWithValueString(DcmTags.PixelRepresentation, "0");
data.AddElementWithValueString(DcmTags.RescaleIntercept, "0");//0
data.AddElementWithValueString(DcmTags.RescaleSlope, "1");
//data.AddElementWithValueString(DcmTags.RotationDirection, "CW");
//ushort bitdepth = 2;未使用过
DcmPixelData pixelData = new DcmPixelData(DcmTS.ImplicitVRLittleEndian);
pixelData.PixelRepresentation = 0;//ok
pixelData.ImageWidth = imgwidth;
pixelData.ImageHeight = imgheight;
pixelData.SamplesPerPixel = 1; //ok
pixelData.HighBit = 15; //ok
pixelData.BitsStored = 16; //ok
pixelData.BitsAllocated = 16; //ok
//pixelData.SamplesPerPixel = 1;
//pixelData.HighBit = 7;
//pixelData.BitsStored = 8;
//pixelData.BitsAllocated = 8;
pixelData.ImageType = "ORIGINAL\\PRIMARY\\AXIAL";
pixelData.PhotometricInterpretation = "MONOCHROME2";//2 byte gray? //ok
//pixelData.FragmentSize
//pixelData.IsLossy = true;
//pixelData.LossyCompressionMethod = "01";
pixelData.PixelDataElement = DcmElement.Create(DcmTags.PixelData, DcmVR.OW); //OB: Other Byte, OW: Other Word
//pixelData.AddFrame(bmpBytes);
pixelData.AddFrame(greybytes);
pixelData.UpdateDataset(data);
DicomFileFormat ff = new DicomFileFormat(data);
//string fileout = System.IO.Path.Combine(Directory.GetCurrentDirectory(), "greyimg_test.dcm");
ff.Save(fileout, Dicom.DicomWriteOptions.Default);//Default
ff = null;
return(fileout);
}
/// <summary>
/// Initializes a new instance of <see cref="DicomFileReader"/>.
/// </summary>
public DicomFileReader()
{
this.fileFormat = DicomFileFormat.Unknown;
this.syntax = null;
this.locker = new object();
}
private static void UpdateFileFormatAndSyntax(
string code,
string uid,
ref DicomFileFormat fileFormat,
ref DicomTransferSyntax syntax)
{
if (code != null)
{
if (code == "ACR-NEMA 1.0")
{
fileFormat = DicomFileFormat.ACRNEMA1;
}
else if (code == "ACR-NEMA 2.0")
{
fileFormat = DicomFileFormat.ACRNEMA2;
}
}
if (uid != null)
{
syntax = DicomTransferSyntax.Parse(uid);
}
}
private static async Task<Tuple<DicomReaderResult, DicomFileFormat, DicomTransferSyntax>> DoParseAsync(
IByteSource source,
IDicomReaderObserver fileMetasetInfoObserver,
IDicomReaderObserver datasetObserver,
Func<ParseState, bool> stop,
DicomTransferSyntax syntax,
DicomFileFormat fileFormat)
{
string code = null, uid = null;
var obs = new DicomReaderCallbackObserver();
if (fileFormat != DicomFileFormat.DICOM3)
{
obs.Add(
DicomTag.RecognitionCodeRETIRED,
(sender, ea) =>
{
try
{
code = Encoding.UTF8.GetString(ea.Data.Data, 0, ea.Data.Data.Length);
}
catch
{
}
});
}
obs.Add(
DicomTag.TransferSyntaxUID,
(sender, ea) =>
{
try
{
uid = Encoding.UTF8.GetString(ea.Data.Data, 0, ea.Data.Data.Length);
}
catch
{
}
});
var reader = new DicomReader { IsExplicitVR = syntax.IsExplicitVR, IsDeflated = false };
DicomReaderResult result;
if (fileFormat == DicomFileFormat.DICOM3NoFileMetaInfo)
{
result =
await
reader.ReadAsync(source, new DicomReaderMultiObserver(obs, datasetObserver), stop).ConfigureAwait(false);
UpdateFileFormatAndSyntax(code, uid, ref fileFormat, ref syntax);
}
else
{
if (
await
reader.ReadAsync(
source,
new DicomReaderMultiObserver(obs, fileMetasetInfoObserver),
FileMetaInfoStopCriterion).ConfigureAwait(false) != DicomReaderResult.Stopped)
{
throw new DicomReaderException("DICOM File Meta Info ended prematurely");
}
UpdateFileFormatAndSyntax(code, uid, ref fileFormat, ref syntax);
// rewind to last marker (start of previous tag)... ugly because
// it requires knowledge of how the parser is implemented
source.Rewind();
source.Endian = syntax.Endian;
reader.IsExplicitVR = syntax.IsExplicitVR;
reader.IsDeflated = syntax.IsDeflate;
result = await reader.ReadAsync(source, datasetObserver, stop).ConfigureAwait(false);
}
return Tuple.Create(result, fileFormat, syntax);
}
public ParseResult(DicomReaderResult result, DicomFileFormat format, DicomTransferSyntax syntax)
{
Result = result;
Format = format;
Syntax = syntax;
}
private static async Task <Tuple <DicomReaderResult, DicomFileFormat, DicomTransferSyntax> > DoParseAsync(
IByteSource source,
IDicomReaderObserver fileMetasetInfoObserver,
IDicomReaderObserver datasetObserver,
Func <ParseState, bool> stop,
DicomTransferSyntax syntax,
DicomFileFormat fileFormat)
{
string code = null, uid = null;
var obs = new DicomReaderCallbackObserver();
if (fileFormat != DicomFileFormat.DICOM3)
{
obs.Add(
DicomTag.RecognitionCodeRETIRED,
(sender, ea) =>
{
try
{
code = Encoding.UTF8.GetString(ea.Data.Data, 0, ea.Data.Data.Length);
}
catch
{
}
});
}
obs.Add(
DicomTag.TransferSyntaxUID,
(sender, ea) =>
{
try
{
uid = Encoding.UTF8.GetString(ea.Data.Data, 0, ea.Data.Data.Length);
}
catch
{
}
});
var reader = new DicomReader {
IsExplicitVR = syntax.IsExplicitVR, IsDeflated = false
};
DicomReaderResult result;
if (fileFormat == DicomFileFormat.DICOM3NoFileMetaInfo)
{
result =
await
reader.ReadAsync(source, new DicomReaderMultiObserver(obs, datasetObserver), stop).ConfigureAwait(false);
UpdateFileFormatAndSyntax(code, uid, ref fileFormat, ref syntax);
}
else
{
if (
await
reader.ReadAsync(
source,
new DicomReaderMultiObserver(obs, fileMetasetInfoObserver),
_FileMetaInfoStopCriterion).ConfigureAwait(false) != DicomReaderResult.Stopped)
{
throw new DicomReaderException("DICOM File Meta Info ended prematurely");
}
UpdateFileFormatAndSyntax(code, uid, ref fileFormat, ref syntax);
// rewind to last marker (start of previous tag)... ugly because
// it requires knowledge of how the parser is implemented
source.Rewind();
source.Endian = syntax.Endian;
reader.IsExplicitVR = syntax.IsExplicitVR;
reader.IsDeflated = syntax.IsDeflate;
result = await reader.ReadAsync(source, datasetObserver, stop).ConfigureAwait(false);
}
return(Tuple.Create(result, fileFormat, syntax));
}
/// <summary>
/// Asynchronously read DICOM file object.
/// </summary>
/// <param name="source">Byte source to read.</param>
/// <param name="fileMetaInfo">Reader observer for file meta information.</param>
/// <param name="dataset">Reader observer for dataset.</param>
/// <param name="stop">Stop criterion in dataset.</param>
/// <returns>Awaitable reader result.</returns>
public async Task<DicomReaderResult> ReadAsync(
IByteSource source,
IDicomReaderObserver fileMetaInfo,
IDicomReaderObserver dataset,
Func<ParseState, bool> stop = null)
{
var parse = await ParseAsync(source, fileMetaInfo, dataset, stop).ConfigureAwait(false);
lock (this.locker)
{
this.fileFormat = parse.Item2;
this.syntax = parse.Item3;
}
return parse.Item1;
}
/// <summary>
/// Loads the DICOM file and changes the transfer syntax if needed. (Internal)
/// </summary>
/// <param name="client">C-Store Client</param>
public void Load(CStoreClient client)
{
if (_loaded)
{
return;
}
try {
DicomTransferSyntax tx = null;
foreach (DcmPresContext pc in client.Associate.GetPresentationContexts())
{
if (pc.Result == DcmPresContextResult.Accept && pc.AbstractSyntax == _sopClass)
{
tx = pc.AcceptedTransferSyntax;
break;
}
}
if (tx == null)
{
throw new DicomNetworkException("No accepted presentation contexts for abstract syntax: " + _sopClass.Description);
}
// Possible to stream from file?
if (!client.DisableFileStreaming && tx == TransferSyntax)
{
using (FileStream fs = DicomFileFormat.GetDatasetStream(_fileName)) {
_datasetSize = Convert.ToUInt32(fs.Length - fs.Position);
fs.Close();
}
return;
}
DcmCodecParameters codecParams = null;
if (tx == client.PreferredTransferSyntax)
{
codecParams = client.PreferredTransferSyntaxParams;
}
DicomFileFormat ff = new DicomFileFormat();
ff.Load(FileName, DicomReadOptions.DefaultWithoutDeferredLoading);
if (_originalTransferSyntax != tx)
{
if (_originalTransferSyntax.IsEncapsulated)
{
// Dataset is compressed... decompress
try {
ff.ChangeTransferSytnax(DicomTransferSyntax.ExplicitVRLittleEndian, null);
}
catch {
client.Log.Error("{0} -> Unable to change transfer syntax:\n\tclass: {1}\n\told: {2}\n\tnew: {3}\n\treason: {4}\n\tcodecs: {5} - {6}",
client.LogID, SOPClassUID.Description, _originalTransferSyntax, DicomTransferSyntax.ExplicitVRLittleEndian,
#if DEBUG
HasError ? "Unknown" : Error.ToString(),
#else
HasError ? "Unknown" : Error.Message,
#endif
DicomCodec.HasCodec(_originalTransferSyntax), DicomCodec.HasCodec(DicomTransferSyntax.ExplicitVRLittleEndian));
throw;
}
}
if (tx.IsEncapsulated)
{
// Dataset needs to be compressed
try {
ff.ChangeTransferSytnax(tx, codecParams);
}
catch {
client.Log.Error("{0} -> Unable to change transfer syntax:\n\tclass: {1}\n\told: {2}\n\tnew: {3}\n\treason: {4}\n\tcodecs: {5} - {6}",
client.LogID, SOPClassUID.Description, ff.Dataset.InternalTransferSyntax, tx,
#if DEBUG
HasError ? "Unknown" : Error.ToString(),
#else
HasError ? "Unknown" : Error.Message,
#endif
DicomCodec.HasCodec(ff.Dataset.InternalTransferSyntax), DicomCodec.HasCodec(tx));
throw;
}
}
}
_dataset = ff.Dataset;
_datasetSize = _dataset.CalculateWriteLength(tx, DicomWriteOptions.Default);
_transferSyntax = tx;
}
catch (Exception e) {
_dataset = null;
_transferSyntax = _originalTransferSyntax;
_status = DcmStatus.ProcessingFailure;
_exception = e;
}
finally {
_loaded = true;
}
}
/// <summary>
/// Read DICOM file object.
/// </summary>
/// <param name="source">Byte source to read.</param>
/// <param name="fileMetaInfo">Reader observer for file meta information.</param>
/// <param name="dataset">Reader observer for dataset.</param>
/// <param name="stop">Stop criterion in dataset.</param>
/// <returns>Reader result.</returns>
public DicomReaderResult Read(
IByteSource source,
IDicomReaderObserver fileMetaInfo,
IDicomReaderObserver dataset,
Func<ParseState, bool> stop = null)
{
var parse = Parse(source, fileMetaInfo, dataset, stop);
lock (this.locker)
{
this.fileFormat = parse.Format;
this.syntax = parse.Syntax;
}
return parse.Result;
}
public ParseResult(DicomReaderResult result, DicomFileFormat format, DicomTransferSyntax syntax)
{
this.Result = result;
this.Format = format;
this.Syntax = syntax;
}
private static void Preprocess(
IByteSource source,
ref DicomFileFormat fileFormat,
ref DicomTransferSyntax syntax)
{
// mark file origin
source.Mark();
// test for DICM preamble
source.Skip(128);
if (source.GetUInt8() == 'D' && source.GetUInt8() == 'I' && source.GetUInt8() == 'C'
&& source.GetUInt8() == 'M')
{
fileFormat = DicomFileFormat.DICOM3;
}
// test for incorrect syntax in file meta info
do
{
if (fileFormat == DicomFileFormat.DICOM3)
{
// move milestone to after preamble
source.Mark();
}
else
{
// rewind to origin milestone
source.Rewind();
}
// test for file meta info
var group = source.GetUInt16();
if (@group > 0x00ff)
{
source.Endian = Endian.Big;
syntax = DicomTransferSyntax.ExplicitVRBigEndian;
@group = Endian.Swap(@group);
}
if (@group > 0x00ff)
{
// invalid starting tag
fileFormat = DicomFileFormat.Unknown;
source.Rewind();
break;
}
if (fileFormat == DicomFileFormat.Unknown)
{
fileFormat = @group == 0x0002
? DicomFileFormat.DICOM3NoPreamble
: DicomFileFormat.DICOM3NoFileMetaInfo;
}
var element = source.GetUInt16();
var tag = new DicomTag(@group, element);
// test for explicit VR
var vrt = Encoding.UTF8.GetBytes(tag.DictionaryEntry.ValueRepresentations[0].Code);
var vrs = source.GetBytes(2);
if (vrt[0] != vrs[0] || vrt[1] != vrs[1])
{
// implicit VR
syntax = syntax.Endian == Endian.Little
? DicomTransferSyntax.ImplicitVRLittleEndian
: DicomTransferSyntax.ImplicitVRBigEndian;
}
source.Rewind();
}
while (fileFormat == DicomFileFormat.Unknown);
if (fileFormat == DicomFileFormat.Unknown)
{
throw new DicomReaderException("Attempted to read invalid DICOM file");
}
// Adopt transfer syntax endianess to byte source.
source.Endian = syntax.Endian;
}
