public DicomWriteOptions(DicomWriteOptions options)
{
ExplicitLengthSequences = options.ExplicitLengthSequences;
ExplicitLengthSequenceItems = options.ExplicitLengthSequenceItems;
KeepGroupLengths = options.KeepGroupLengths;
LargeObjectSize = options.LargeObjectSize;
}
public void WriteOptionsTest(DicomFile sourceFile, DicomWriteOptions options)
{
bool result = sourceFile.Save(options);
Assert.AreEqual(result, true);
DicomFile newFile = new DicomFile(sourceFile.Filename);
DicomReadOptions readOptions = DicomReadOptions.Default;
newFile.Load(readOptions);
Assert.AreEqual(sourceFile.DataSet.Equals(newFile.DataSet), true);
// update a tag, and make sure it shows they're different
newFile.DataSet[DicomTags.PatientsName].Values = "NewPatient^First";
Assert.AreEqual(sourceFile.DataSet.Equals(newFile.DataSet), false);
// Now update the original file with the name, and they should be the same again
sourceFile.DataSet[DicomTags.PatientsName].Values = "NewPatient^First";
Assert.AreEqual(sourceFile.DataSet.Equals(newFile.DataSet), true);
// Return the original string value.
sourceFile.DataSet[DicomTags.PatientsName].SetStringValue("Patient^Test");
}
internal override uint CalculateWriteLength(DicomTransferSyntax syntax, DicomWriteOptions options) {
uint length = 4 + 4;
length += Dataset.CalculateWriteLength(syntax, options & ~DicomWriteOptions.CalculateGroupLengths);
if (!Flags.IsSet(options, DicomWriteOptions.ExplicitLengthSequenceItem))
length += 4 + 4; // Sequence Item Delimitation Item
return length;
}
public void CreateFileTest()
{
DicomFile file = new DicomFile("CreateFileTest.dcm");
DicomAttributeCollection dataSet = file.DataSet;
SetupMR(dataSet);
string studyId = file.DataSet[DicomTags.StudyId].GetString(0, "");
Assert.AreEqual(studyId, "1933");
SetupMetaInfo(file);
// Little Endian Tests
file.TransferSyntax = TransferSyntax.ExplicitVrLittleEndian;
DicomWriteOptions writeOptions = DicomWriteOptions.Default;
WriteOptionsTest(file, writeOptions);
writeOptions = DicomWriteOptions.ExplicitLengthSequence;
WriteOptionsTest(file, writeOptions);
writeOptions = DicomWriteOptions.ExplicitLengthSequenceItem;
WriteOptionsTest(file, writeOptions);
writeOptions = DicomWriteOptions.ExplicitLengthSequence | DicomWriteOptions.ExplicitLengthSequenceItem;
WriteOptionsTest(file, writeOptions);
writeOptions = DicomWriteOptions.None;
WriteOptionsTest(file, writeOptions);
// Big Endian Tests
file.Filename = "BigEndianCreateFileTest.dcm";
file.TransferSyntax = TransferSyntax.ExplicitVrBigEndian;
writeOptions = DicomWriteOptions.Default;
WriteOptionsTest(file, writeOptions);
writeOptions = DicomWriteOptions.ExplicitLengthSequence;
WriteOptionsTest(file, writeOptions);
writeOptions = DicomWriteOptions.ExplicitLengthSequenceItem;
WriteOptionsTest(file, writeOptions);
writeOptions = DicomWriteOptions.ExplicitLengthSequence | DicomWriteOptions.ExplicitLengthSequenceItem;
WriteOptionsTest(file, writeOptions);
writeOptions = DicomWriteOptions.None;
WriteOptionsTest(file, writeOptions);
}
/// <summary>
/// Save to file asynchronously.
/// </summary>
/// <param name="fileName">Name of file.</param>
/// <param name="options">Options to apply during writing.</param>
/// <returns>Awaitable <see cref="Task"/>.</returns>
public async Task SaveAsync(string fileName, DicomWriteOptions options = null)
{
PreprocessFileMetaInformation();
File = Setup.ServiceProvider.GetService <IFileReferenceFactory>().Create(fileName);
File.Delete();
OnSave();
using var target = new FileByteTarget(File);
var writer = new DicomFileWriter(options);
await writer.WriteAsync(target, FileMetaInfo, Dataset).ConfigureAwait(false);
}
/// <summary>
/// Save DICOM file.
/// </summary>
/// <param name="fileName">File name.</param>
/// <param name="options">Options to apply during writing.</param>
public void Save(string fileName, DicomWriteOptions options = null)
{
PreprocessFileMetaInformation();
File = Setup.ServiceProvider.GetService <IFileReferenceFactory>().Create(fileName);
File.Delete();
OnSave();
using var target = new FileByteTarget(File);
var writer = new DicomFileWriter(options);
writer.Write(target, FileMetaInfo, Dataset);
}
/// <summary>
/// Save to file asynchronously.
/// </summary>
/// <param name="fileName">Name of file.</param>
/// <param name="options">Options to apply during writing.</param>
/// <returns>Awaitable <see cref="Task"/>.</returns>
public async Task SaveAsync(string fileName, DicomWriteOptions options = null)
{
this.PreprocessFileMetaInformation();
this.File = IOManager.CreateFileReference(fileName);
this.File.Delete();
this.OnSave();
using (var target = new FileByteTarget(this.File))
{
var writer = new DicomFileWriter(options);
await writer.WriteAsync(target, this.FileMetaInfo, this.Dataset).ConfigureAwait(false);
}
}
/// <summary>
/// Save DICOM file.
/// </summary>
/// <param name="fileName">File name.</param>
/// <param name="options">Options to apply during writing.</param>
public void Save(string fileName, DicomWriteOptions options = null)
{
this.PreprocessFileMetaInformation();
this.File = IOManager.CreateFileReference(fileName);
this.File.Delete();
this.OnSave();
using (var target = new FileByteTarget(this.File))
{
var writer = new DicomFileWriter(options);
writer.Write(target, this.FileMetaInfo, this.Dataset);
}
}
public void MultiframeCreateFileTest()
{
DicomFile file = new DicomFile("MultiframeCreateFileTest.dcm");
DicomAttributeCollection dataSet = file.DataSet;
SetupMultiframeXA(dataSet, 511, 511, 5);
SetupMetaInfo(file);
// Little Endian Tests
file.TransferSyntax = TransferSyntax.ExplicitVrLittleEndian;
DicomWriteOptions writeOptions = DicomWriteOptions.Default;
WriteOptionsTest(file, writeOptions);
writeOptions = DicomWriteOptions.ExplicitLengthSequence;
WriteOptionsTest(file, writeOptions);
writeOptions = DicomWriteOptions.ExplicitLengthSequenceItem;
WriteOptionsTest(file, writeOptions);
writeOptions = DicomWriteOptions.ExplicitLengthSequence | DicomWriteOptions.ExplicitLengthSequenceItem;
WriteOptionsTest(file, writeOptions);
writeOptions = DicomWriteOptions.None;
WriteOptionsTest(file, writeOptions);
// Big Endian Tests
file.Filename = "MultiframeBigEndianCreateFileTest.dcm";
file.TransferSyntax = TransferSyntax.ExplicitVrBigEndian;
writeOptions = DicomWriteOptions.Default;
WriteOptionsTest(file, writeOptions);
writeOptions = DicomWriteOptions.ExplicitLengthSequence;
WriteOptionsTest(file, writeOptions);
writeOptions = DicomWriteOptions.ExplicitLengthSequenceItem;
WriteOptionsTest(file, writeOptions);
writeOptions = DicomWriteOptions.ExplicitLengthSequence | DicomWriteOptions.ExplicitLengthSequenceItem;
WriteOptionsTest(file, writeOptions);
writeOptions = DicomWriteOptions.None;
WriteOptionsTest(file, writeOptions);
}
/// <summary>
/// Save the file as a DICOM Part 10 format file.
/// </summary>
/// <param name="options">The options to use when saving the file.</param>
/// <param name="file">The path of the file to save to.</param>
/// <returns></returns>
public bool Save(string file, DicomWriteOptions options)
{
if (file == null)
{
throw new ArgumentNullException("file");
}
Filename = file;
using (FileStream fs = File.Create(Filename))
{
bool b = Save(fs, options);
fs.Flush();
fs.Close();
return(b);
}
}
public override uint CalculateWriteLength(DicomTransferSyntax syntax, DicomWriteOptions options)
{
uint length = 0;
length += 4; // element tag
if (syntax.IsExplicitVR) {
length += 2; // vr
length += 6; // length
} else {
length += 4; // length
}
foreach (DcmItemSequenceItem item in SequenceItems) {
length += item.CalculateWriteLength(syntax, options);
}
if (!Flags.IsSet(options, DicomWriteOptions.ExplicitLengthSequence))
length += 4 + 4; // Sequence Delimitation Item
return length;
}
public void Save_PixelDataWrittenInManyChunks_EqualsWhenPixelDataWrittenInOneChunk()
{
var file = DicomFile.Open(@"Test Data\CT-MONO2-16-ankle");
using (var stream1 = new MemoryStream())
using (var stream2 = new MemoryStream())
{
var options1 = new DicomWriteOptions {
LargeObjectSize = 1024
};
file.Save(stream1, options1);
var options2 = new DicomWriteOptions {
LargeObjectSize = 16 * 1024 * 1024
};
file.Save(stream2, options2);
Assert.Equal(stream1.ToArray(), stream2.ToArray());
}
}
/// <summary>
/// Save the file as a DICOM Part 10 format file (as set by the <see cref="Filename"/> property).
/// </summary>
/// <param name="options">The options to use when saving the file.</param>
/// <returns></returns>
public bool Save(DicomWriteOptions options)
{
string path = Path.GetDirectoryName(Filename);
if (!string.IsNullOrEmpty(path))
{
if (!Directory.Exists(path))
{
Directory.CreateDirectory(path);
}
}
using (FileStream fs = File.Create(Filename))
{
bool b = Save(fs, options);
fs.Flush();
fs.Close();
return(b);
}
}
public async Task SaveAsync_PixelDataWrittenInManyChunks_EqualsWhenPixelDataWrittenInOneChunk()
{
var file = DicomFile.Open(@"Test Data\CT-MONO2-16-ankle");
using (var stream1 = new MemoryStream())
using (var stream2 = new MemoryStream())
{
var options1 = new DicomWriteOptions {
LargeObjectSize = 1024
};
await file.SaveAsync(stream1, options1).ConfigureAwait(false);
var options2 = new DicomWriteOptions {
LargeObjectSize = 16 * 1024 * 1024
};
await file.SaveAsync(stream2, options2).ConfigureAwait(false);
Assert.Equal(stream1.ToArray(), stream2.ToArray());
}
}
/// <summary>
/// Saves a DICOM file to a MemoryStream
/// </summary>
/// <param name="options">DICOM write options.</param>
/// <returns></returns>
public MemoryStream Save(DicomWriteOptions options)
{
MemoryStream ms = new MemoryStream();
ms.Seek(128, SeekOrigin.Begin);
ms.WriteByte((byte)'D');
ms.WriteByte((byte)'I');
ms.WriteByte((byte)'C');
ms.WriteByte((byte)'M');
DicomStreamWriter dsw = new DicomStreamWriter(ms);
dsw.Write(_metainfo, options | DicomWriteOptions.CalculateGroupLengths);
if (_dataset != null)
{
dsw.Write(_dataset, options);
}
return(ms);
}
public async Task SaveAsyncToFile_PixelDataWrittenInManyChunks_EqualsWhenPixelDataWrittenInOneChunk()
{
var file = DicomFile.Open(@"Test Data\CT-MONO2-16-ankle");
var options1 = new DicomWriteOptions {
LargeObjectSize = 1024
};
await file.SaveAsync("saveasynctofile1", options1).ConfigureAwait(false);
var options2 = new DicomWriteOptions {
LargeObjectSize = 16 * 1024 * 1024
};
await file.SaveAsync("saveasynctofile2", options2).ConfigureAwait(false);
var bytes1 = File.ReadAllBytes("saveasynctofile1");
var bytes2 = File.ReadAllBytes("saveasynctofile2");
Assert.Equal(bytes1, bytes2);
}
/// <summary>
/// Calculate the length to write the attribute.
/// </summary>
/// <param name="syntax">The transfer syntax to calculate the length for.</param>
/// <param name="options">The write options to calculate the length for.</param>
/// <returns></returns>
internal virtual uint CalculateWriteLength(TransferSyntax syntax, DicomWriteOptions options)
{
uint length = 4; // element tag
if (syntax.ExplicitVr)
{
length += 2; // vr
if (Tag.VR.Is16BitLengthField)
length += 2;
else
length += 6;
}
else
{
length += 4; // length tag
}
length += StreamLength;
if ((length & 0x00000001) != 0)
length++;
return length;
}
internal override uint CalculateWriteLength(DicomTransferSyntax syntax, DicomWriteOptions options)
{
uint length = 0;
length += 4; // element tag
if (syntax.IsExplicitVR)
{
length += 2; // vr
length += 6; // length
}
else
{
length += 4; // length
}
foreach (DcmItemSequenceItem item in SequenceItems)
{
length += item.CalculateWriteLength(syntax, options);
}
if (!Flags.IsSet(options, DicomWriteOptions.ExplicitLengthSequence))
{
length += 4 + 4; // Sequence Delimitation Item
}
return(length);
}
public DicomWriteStatus Write(TransferSyntax syntax, DicomAttributeCollection dataset, DicomWriteOptions options)
{
TransferSyntax = syntax;
foreach (DicomAttribute item in dataset)
{
if (item.Tag.Element == 0x0000)
{
continue;
}
if (item.IsEmpty)
{
continue;
}
if (Flags.IsSet(options, DicomWriteOptions.CalculateGroupLengths) &&
item.Tag.Group != _group && item.Tag.Group <= 0x7fe0)
{
_group = item.Tag.Group;
_writer.Write((ushort)_group);
_writer.Write((ushort)0x0000);
if (_syntax.ExplicitVr)
{
_writer.Write((byte)'U');
_writer.Write((byte)'L');
_writer.Write((ushort)4);
}
else
{
_writer.Write((uint)4);
}
_writer.Write((uint)dataset.CalculateGroupWriteLength(_group, _syntax, options));
}
_writer.Write((ushort)item.Tag.Group);
_writer.Write((ushort)item.Tag.Element);
if (_syntax.ExplicitVr)
{
_writer.Write((byte)item.Tag.VR.Name[0]);
_writer.Write((byte)item.Tag.VR.Name[1]);
}
if (item is DicomAttributeSQ)
{
DicomAttributeSQ sq = item as DicomAttributeSQ;
if (_syntax.ExplicitVr)
{
_writer.Write((ushort)0x0000);
}
if (Flags.IsSet(options, DicomWriteOptions.ExplicitLengthSequence))
{
int hl = _syntax.ExplicitVr ? 12 : 8;
_writer.Write((uint)sq.CalculateWriteLength(_syntax, options & ~DicomWriteOptions.CalculateGroupLengths) - (uint)hl);
}
else
{
_writer.Write((uint)UndefinedLength);
}
foreach (DicomSequenceItem ids in item.Values as DicomSequenceItem[])
{
_writer.Write((ushort)DicomTag.Item.Group);
_writer.Write((ushort)DicomTag.Item.Element);
if (Flags.IsSet(options, DicomWriteOptions.ExplicitLengthSequenceItem))
{
_writer.Write((uint)ids.CalculateWriteLength(_syntax, options & ~DicomWriteOptions.CalculateGroupLengths));
}
else
{
_writer.Write((uint)UndefinedLength);
}
Write(this.TransferSyntax, ids, options & ~DicomWriteOptions.CalculateGroupLengths);
if (!Flags.IsSet(options, DicomWriteOptions.ExplicitLengthSequenceItem))
{
_writer.Write((ushort)DicomTag.ItemDelimitationItem.Group);
_writer.Write((ushort)DicomTag.ItemDelimitationItem.Element);
_writer.Write((uint)0x00000000);
}
}
if (!Flags.IsSet(options, DicomWriteOptions.ExplicitLengthSequence))
{
_writer.Write((ushort)DicomTag.SequenceDelimitationItem.Group);
_writer.Write((ushort)DicomTag.SequenceDelimitationItem.Element);
_writer.Write((uint)0x00000000);
}
}
else if (item is DicomFragmentSequence)
{
DicomFragmentSequence fs = item as DicomFragmentSequence;
if (_syntax.ExplicitVr)
{
_writer.Write((ushort)0x0000);
}
_writer.Write((uint)UndefinedLength);
_writer.Write((ushort)DicomTag.Item.Group);
_writer.Write((ushort)DicomTag.Item.Element);
if (Flags.IsSet(options, DicomWriteOptions.WriteFragmentOffsetTable) && fs.HasOffsetTable)
{
_writer.Write((uint)fs.OffsetTableBuffer.Length);
fs.OffsetTableBuffer.CopyTo(_writer);
}
else
{
_writer.Write((uint)0x00000000);
}
foreach (DicomFragment bb in fs.Fragments)
{
_writer.Write((ushort)DicomTag.Item.Group);
_writer.Write((ushort)DicomTag.Item.Element);
_writer.Write((uint)bb.Length);
bb.GetByteBuffer(_syntax).CopyTo(_writer);
}
_writer.Write((ushort)DicomTag.SequenceDelimitationItem.Group);
_writer.Write((ushort)DicomTag.SequenceDelimitationItem.Element);
_writer.Write((uint)0x00000000);
}
else
{
DicomAttribute de = item;
ByteBuffer theData = de.GetByteBuffer(_syntax, dataset.SpecificCharacterSet);
if (_syntax.ExplicitVr)
{
if (de.Tag.VR.Is16BitLengthField)
{
_writer.Write((ushort)theData.Length);
}
else
{
_writer.Write((ushort)0x0000);
_writer.Write((uint)theData.Length);
}
}
else
{
_writer.Write((uint)theData.Length);
}
if (theData.Length > 0)
{
theData.CopyTo(_writer);
}
}
}
return(DicomWriteStatus.Success);
}
public uint CalculateGroupWriteLength(ushort group, DicomTransferSyntax syntax, DicomWriteOptions options)
{
uint length = 0;
foreach (DcmItem item in _items.Values) {
if (item.Tag.Group < group || item.Tag.Element == 0x0000)
continue;
if (item.Tag.Group > group)
return length;
length += item.CalculateWriteLength(syntax, options);
}
return length;
}
public uint CalculateWriteLength(DicomTransferSyntax syntax, DicomWriteOptions options)
{
uint length = 0;
ushort group = 0xffff;
foreach (DcmItem item in _items.Values) {
if (item.Tag.Element == 0x0000)
continue;
if (item.Tag.Group != group) {
group = item.Tag.Group;
if (Flags.IsSet(options, DicomWriteOptions.CalculateGroupLengths)) {
if (syntax.IsExplicitVR)
length += 4 + 2 + 2 + 4;
else
length += 4 + 4 + 4;
}
}
length += item.CalculateWriteLength(syntax, options);
}
return length;
}
internal override uint CalculateWriteLength(TransferSyntax syntax, DicomWriteOptions options)
{
uint length = 0;
length += 4; // element tag
if (syntax.ExplicitVr)
{
length += 2; // vr
length += 6; // length
}
else
{
length += 4; // length
}
// write the offset table (item tag is always present, though content may be zero length)
length += 4 + 4; // item tag and length
if (Flags.IsSet(options, DicomWriteOptions.WriteFragmentOffsetTable) && _table != null)
length += (uint) (_table.Count*4);
foreach (DicomFragment fragment in this._fragments)
{
length += 4; // item tag
length += 4; // fragment length
length += fragment.Length;
// no Item Delimitation Item (fragments are always explicit length)
}
length += 4 + 4; // Sequence Delimitation Item (fragment sequences are always undefined length)
return length;
}
public static bool IsSet(DicomWriteOptions options, DicomWriteOptions flag)
{
return (options & flag) == flag;
}
/// <summary>
/// Save the file as a DICOM Part 10 format file (as set by the <see cref="Filename"/> property).
/// </summary>
/// <param name="options">The options to use when saving the file.</param>
/// <returns></returns>
public bool Save(DicomWriteOptions options)
{
string path = Path.GetDirectoryName(Filename);
if (!string.IsNullOrEmpty(path))
{
if (!Directory.Exists(path))
Directory.CreateDirectory(path);
}
using (FileStream fs = File.Create(Filename))
{
bool b = Save(fs, options);
fs.Flush();
fs.Close();
return b;
}
}
/// <summary>
/// Save the file as a DICOM Part 10 format file.
/// </summary>
/// <param name="options">The options to use when saving the file.</param>
/// <param name="iStream">The <see cref="Stream"/> to Save the DICOM file to.</param>
/// <returns></returns>
public bool Save(Stream iStream, DicomWriteOptions options)
{
if (iStream == null) throw new ArgumentNullException("iStream");
// Original code has seek() here, but there may be use cases where
// a user wants to add the file into a stream (that may contain other data)
// and the seek would cause the method to not support that.
byte[] prefix = new byte[128];
iStream.Write(prefix,0,128);
iStream.WriteByte((byte) 'D');
iStream.WriteByte((byte) 'I');
iStream.WriteByte((byte) 'C');
iStream.WriteByte((byte) 'M');
DicomStreamWriter dsw = new DicomStreamWriter(iStream);
dsw.Write(TransferSyntax.ExplicitVrLittleEndian,
MetaInfo, options | DicomWriteOptions.CalculateGroupLengths);
MetaInfoFileLength = iStream.Position;
dsw.Write(TransferSyntax, DataSet, options);
iStream.Flush();
return true;
}
public DicomWriteStatus Write(TransferSyntax syntax, DicomAttributeCollection dataset, DicomWriteOptions options)
{
TransferSyntax = syntax;
foreach (DicomAttribute item in dataset)
{
if (item.Tag.Element == 0x0000)
continue;
if (item.IsEmpty)
continue;
if (Flags.IsSet(options, DicomWriteOptions.CalculateGroupLengths)
&& item.Tag.Group != _group && item.Tag.Group <= 0x7fe0)
{
_group = item.Tag.Group;
_writer.Write((ushort)_group);
_writer.Write((ushort)0x0000);
if (_syntax.ExplicitVr)
{
_writer.Write((byte)'U');
_writer.Write((byte)'L');
_writer.Write((ushort)4);
}
else
{
_writer.Write((uint)4);
}
_writer.Write((uint)dataset.CalculateGroupWriteLength(_group, _syntax, options));
}
_writer.Write((ushort)item.Tag.Group);
_writer.Write((ushort)item.Tag.Element);
if (_syntax.ExplicitVr)
{
_writer.Write((byte)item.Tag.VR.Name[0]);
_writer.Write((byte)item.Tag.VR.Name[1]);
}
if (item is DicomAttributeSQ)
{
DicomAttributeSQ sq = item as DicomAttributeSQ;
if (_syntax.ExplicitVr)
_writer.Write((ushort)0x0000);
if (Flags.IsSet(options, DicomWriteOptions.ExplicitLengthSequence))
{
int hl = _syntax.ExplicitVr ? 12 : 8;
_writer.Write((uint)sq.CalculateWriteLength(_syntax, options & ~DicomWriteOptions.CalculateGroupLengths) - (uint)hl);
}
else
{
_writer.Write((uint)UndefinedLength);
}
foreach (DicomSequenceItem ids in item.Values as DicomSequenceItem[])
{
_writer.Write((ushort)DicomTag.Item.Group);
_writer.Write((ushort)DicomTag.Item.Element);
if (Flags.IsSet(options, DicomWriteOptions.ExplicitLengthSequenceItem))
{
_writer.Write((uint)ids.CalculateWriteLength(_syntax, options & ~DicomWriteOptions.CalculateGroupLengths));
}
else
{
_writer.Write((uint)UndefinedLength);
}
Write(this.TransferSyntax, ids, options & ~DicomWriteOptions.CalculateGroupLengths);
if (!Flags.IsSet(options, DicomWriteOptions.ExplicitLengthSequenceItem))
{
_writer.Write((ushort)DicomTag.ItemDelimitationItem.Group);
_writer.Write((ushort)DicomTag.ItemDelimitationItem.Element);
_writer.Write((uint)0x00000000);
}
}
if (!Flags.IsSet(options, DicomWriteOptions.ExplicitLengthSequence))
{
_writer.Write((ushort)DicomTag.SequenceDelimitationItem.Group);
_writer.Write((ushort)DicomTag.SequenceDelimitationItem.Element);
_writer.Write((uint)0x00000000);
}
}
else if (item is DicomFragmentSequence)
{
DicomFragmentSequence fs = item as DicomFragmentSequence;
if (_syntax.ExplicitVr)
_writer.Write((ushort)0x0000);
_writer.Write((uint)UndefinedLength);
_writer.Write((ushort)DicomTag.Item.Group);
_writer.Write((ushort)DicomTag.Item.Element);
if (Flags.IsSet(options, DicomWriteOptions.WriteFragmentOffsetTable) && fs.HasOffsetTable)
{
_writer.Write((uint)fs.OffsetTableBuffer.Length);
fs.OffsetTableBuffer.CopyTo(_writer);
}
else
{
_writer.Write((uint)0x00000000);
}
foreach (DicomFragment bb in fs.Fragments)
{
_writer.Write((ushort)DicomTag.Item.Group);
_writer.Write((ushort)DicomTag.Item.Element);
_writer.Write((uint)bb.Length);
bb.GetByteBuffer(_syntax).CopyTo(_writer);
}
_writer.Write((ushort)DicomTag.SequenceDelimitationItem.Group);
_writer.Write((ushort)DicomTag.SequenceDelimitationItem.Element);
_writer.Write((uint)0x00000000);
}
else
{
DicomAttribute de = item;
ByteBuffer theData = de.GetByteBuffer(_syntax, dataset.SpecificCharacterSet);
if (_syntax.ExplicitVr)
{
if (de.Tag.VR.Is16BitLengthField)
{
_writer.Write((ushort)theData.Length);
}
else
{
_writer.Write((ushort)0x0000);
_writer.Write((uint)theData.Length);
}
}
else
{
_writer.Write((uint)theData.Length);
}
if (theData.Length > 0)
theData.CopyTo(_writer);
}
}
return DicomWriteStatus.Success;
}
/// <summary>
/// Saves a DICOM file
/// </summary>
/// <param name="file">Filename</param>
/// <param name="options">DICOM write options</param>
public void Save(String file, DicomWriteOptions options) {
string dir = Path.GetDirectoryName(file);
if (!Directory.Exists(dir))
Directory.CreateDirectory(dir);
using (FileStream fs = File.Create(file)) {
fs.Seek(128, SeekOrigin.Begin);
fs.WriteByte((byte)'D');
fs.WriteByte((byte)'I');
fs.WriteByte((byte)'C');
fs.WriteByte((byte)'M');
DicomStreamWriter dsw = new DicomStreamWriter(fs);
dsw.Write(_metainfo, options | DicomWriteOptions.CalculateGroupLengths);
if (_dataset != null)
dsw.Write(_dataset, options);
fs.Close();
}
}
/// <summary>
/// Saves a DICOM file in the isolated storage area
/// </summary>
/// <param name="file">Filename</param>
/// <param name="options">DICOM write options</param>
/// <param name="useIsoStore">Save in isolated storage</param>
public void Save(string file, DicomWriteOptions options, bool useIsoStore = false)
{
if (useIsoStore)
{
using (var store = IsolatedStorageFile.GetUserStoreForApplication())
{
string dir = Path.GetDirectoryName(file);
if (dir != null && !store.DirectoryExists(dir))
store.CreateDirectory(dir);
var fs = store.CreateFile(file);
fs.Seek(128, SeekOrigin.Begin);
fs.WriteByte((byte)'D');
fs.WriteByte((byte)'I');
fs.WriteByte((byte)'C');
fs.WriteByte((byte)'M');
DicomStreamWriter dsw = new DicomStreamWriter(fs);
dsw.Write(_metainfo, options | DicomWriteOptions.CalculateGroupLengths);
if (_dataset != null)
dsw.Write(_dataset, options);
fs.Close();
}
}
else
{
// expand to full path
file = Path.GetFullPath(file);
string dir = Path.GetDirectoryName(file);
if (!Directory.Exists(dir))
Directory.CreateDirectory(dir);
using (FileStream fs = File.Create(file))
{
fs.Seek(128, SeekOrigin.Begin);
fs.WriteByte((byte)'D');
fs.WriteByte((byte)'I');
fs.WriteByte((byte)'C');
fs.WriteByte((byte)'M');
DicomStreamWriter dsw = new DicomStreamWriter(fs);
dsw.Write(_metainfo, options | DicomWriteOptions.CalculateGroupLengths);
if (_dataset != null)
dsw.Write(_dataset, options);
fs.Close();
}
}
}
public DicomWriteStatus Write(TransferSyntax syntax, DicomAttributeCollection dataset, DicomWriteOptions options)
{
TransferSyntax = syntax;
foreach (DicomAttribute item in dataset)
{
if (item.Tag.Element == 0x0000)
{
continue;
}
if (item.IsEmpty)
{
continue;
}
if (Flags.IsSet(options, DicomWriteOptions.CalculateGroupLengths) &&
item.Tag.Group != _group && item.Tag.Group <= 0x7fe0)
{
_group = item.Tag.Group;
_writer.Write((ushort)_group);
_writer.Write((ushort)0x0000);
if (_syntax.ExplicitVr)
{
_writer.Write((byte)'U');
_writer.Write((byte)'L');
_writer.Write((ushort)4);
}
else
{
_writer.Write((uint)4);
}
_writer.Write((uint)dataset.CalculateGroupWriteLength(_group, _syntax, options));
}
_writer.Write((ushort)item.Tag.Group);
_writer.Write((ushort)item.Tag.Element);
if (_syntax.ExplicitVr)
{
_writer.Write((byte)item.Tag.VR.Name[0]);
_writer.Write((byte)item.Tag.VR.Name[1]);
}
if (item is DicomAttributeSQ)
{
DicomAttributeSQ sq = item as DicomAttributeSQ;
if (_syntax.ExplicitVr)
{
_writer.Write((ushort)0x0000);
}
if (Flags.IsSet(options, DicomWriteOptions.ExplicitLengthSequence))
{
int hl = _syntax.ExplicitVr ? 12 : 8;
_writer.Write((uint)sq.CalculateWriteLength(_syntax, options & ~DicomWriteOptions.CalculateGroupLengths) - (uint)hl);
}
else
{
_writer.Write((uint)UndefinedLength);
}
foreach (DicomSequenceItem ids in item.Values as DicomSequenceItem[])
{
_writer.Write((ushort)DicomTag.Item.Group);
_writer.Write((ushort)DicomTag.Item.Element);
if (Flags.IsSet(options, DicomWriteOptions.ExplicitLengthSequenceItem))
{
_writer.Write((uint)ids.CalculateWriteLength(_syntax, options & ~DicomWriteOptions.CalculateGroupLengths));
}
else
{
_writer.Write((uint)UndefinedLength);
}
Write(this.TransferSyntax, ids, options & ~DicomWriteOptions.CalculateGroupLengths);
if (!Flags.IsSet(options, DicomWriteOptions.ExplicitLengthSequenceItem))
{
_writer.Write((ushort)DicomTag.ItemDelimitationItem.Group);
_writer.Write((ushort)DicomTag.ItemDelimitationItem.Element);
_writer.Write((uint)0x00000000);
}
}
if (!Flags.IsSet(options, DicomWriteOptions.ExplicitLengthSequence))
{
_writer.Write((ushort)DicomTag.SequenceDelimitationItem.Group);
_writer.Write((ushort)DicomTag.SequenceDelimitationItem.Element);
_writer.Write((uint)0x00000000);
}
}
else if (item is DicomFragmentSequence)
{
DicomFragmentSequence fs = item as DicomFragmentSequence;
if (_syntax.ExplicitVr)
{
_writer.Write((ushort)0x0000);
}
_writer.Write((uint)UndefinedLength);
_writer.Write((ushort)DicomTag.Item.Group);
_writer.Write((ushort)DicomTag.Item.Element);
if (Flags.IsSet(options, DicomWriteOptions.WriteFragmentOffsetTable) && fs.HasOffsetTable)
{
_writer.Write((uint)fs.OffsetTableBuffer.Length);
fs.OffsetTableBuffer.CopyTo(_writer);
}
else
{
_writer.Write((uint)0x00000000);
}
foreach (DicomFragment bb in fs.Fragments)
{
_writer.Write((ushort)DicomTag.Item.Group);
_writer.Write((ushort)DicomTag.Item.Element);
_writer.Write((uint)bb.Length);
bb.GetByteBuffer(_syntax).CopyTo(_writer);
}
_writer.Write((ushort)DicomTag.SequenceDelimitationItem.Group);
_writer.Write((ushort)DicomTag.SequenceDelimitationItem.Element);
_writer.Write((uint)0x00000000);
}
else
{
DicomAttribute de = item;
ByteBuffer theData = de.GetByteBuffer(_syntax, dataset.SpecificCharacterSet);
if (_syntax.ExplicitVr)
{
if (de.Tag.VR.Is16BitLengthField)
{
// #10890: Can't encode the value length if the length of the data exceeds max value for a 16-bit field
if (theData.Length > ushort.MaxValue - 1 /* must be even length so max allowed = 65534 */)
{
throw new DicomDataException(string.Format(
"Value for {0} exceeds maximum stream length allowed for a {1} VR attribute encoded using {2}",
de.Tag, de.Tag.VR, _syntax));
}
_writer.Write((ushort)theData.Length);
}
else
{
_writer.Write((ushort)0x0000);
_writer.Write((uint)theData.Length);
}
}
else
{
_writer.Write((uint)theData.Length);
}
if (theData.Length > 0)
{
theData.CopyTo(_writer);
}
}
}
return(DicomWriteStatus.Success);
}
/// <summary>
/// Saves a DICOM file to a MemoryStream
/// </summary>
/// <param name="options">DICOM write options.</param>
/// <returns></returns>
public MemoryStream Save(DicomWriteOptions options)
{
MemoryStream ms = new MemoryStream();
ms.Seek(128, SeekOrigin.Begin);
ms.WriteByte((byte)'D');
ms.WriteByte((byte)'I');
ms.WriteByte((byte)'C');
ms.WriteByte((byte)'M');
DicomStreamWriter dsw = new DicomStreamWriter(ms);
dsw.Write(_metainfo, options | DicomWriteOptions.CalculateGroupLengths);
if (_dataset != null)
dsw.Write(_dataset, options);
return ms;
}
/// <summary>
/// Saves a DICOM file
/// </summary>
/// <param name="file">Filename</param>
/// <param name="options">DICOM write options</param>
/// <summary>
/// Saves a DICOM file to a file
/// </summary>
/// <param name="file">Filename</param>
/// <param name="options">DICOM write options</param>
public void Save(String file, DicomWriteOptions options)
{
// expand to full path
file = Path.GetFullPath(file);
string dir = Path.GetDirectoryName(file);
if (!Directory.Exists(dir))
Directory.CreateDirectory(dir);
using (FileStream fs = File.Create(file))
{
Save(fs, options);
fs.Close();
}
}
/// <summary>
/// Saves a DICOM file to a stream. <br/><i>Note that the caller is expected to dispose of the stream.</i>
/// </summary>
/// <param name="stream">Stream to place the DICOM file in</param>
/// <param name="options">DICOM write options</param>
public void Save(Stream stream, DicomWriteOptions options)
{
stream.Seek(128, SeekOrigin.Begin);
stream.WriteByte((byte)'D');
stream.WriteByte((byte)'I');
stream.WriteByte((byte)'C');
stream.WriteByte((byte)'M');
DicomStreamWriter dsw = new DicomStreamWriter(stream);
dsw.Write(_metainfo, options | DicomWriteOptions.CalculateGroupLengths);
if (_dataset != null)
dsw.Write(_dataset, options);
}
/// <summary>
/// Finds the next directory record of the specified <paramref name="recordType"/>, starting at the specified <paramref name="startIndex"/>
/// </summary>
/// <param name="recordType">Type of the record.</param>
/// <param name="startIndex">The start index.</param>
/// <returns></returns>
private void CalculateOffsets(TransferSyntax syntax, DicomWriteOptions options)
{
foreach (DicomSequenceItem sq in (DicomSequenceItem[])_dicomDirFile.DataSet[DicomTags.DirectoryRecordSequence].Values)
{
DirectoryRecordSequenceItem record = sq as DirectoryRecordSequenceItem;
if (record == null)
throw new ApplicationException("Unexpected type for directory record: " + sq.GetType());
record.Offset = _fileOffset;
_fileOffset += 4 + 4; // Sequence Item Tag
_fileOffset += record.CalculateWriteLength(syntax, options & ~DicomWriteOptions.CalculateGroupLengths);
if (!Flags.IsSet(options, DicomWriteOptions.ExplicitLengthSequenceItem))
_fileOffset += 4 + 4; // Sequence Item Delimitation Item
}
if (!Flags.IsSet(options, DicomWriteOptions.ExplicitLengthSequence))
_fileOffset += 4 + 4; // Sequence Delimitation Item
}
internal override uint CalculateWriteLength(DicomTransferSyntax syntax, DicomWriteOptions options)
{
uint length = 0;
length += 4; // element tag
if (syntax.IsExplicitVR)
{
length += 2; // vr
length += 6; // length
}
else
{
length += 4; // length
}
length += 4 + 4; // offset tag
if (Flags.IsSet(options, DicomWriteOptions.WriteFragmentOffsetTable) && _table != null)
length += (uint)(_table.Count * 4);
foreach (ByteBuffer bb in _fragments)
{
length += 4; // item tag
length += 4; // fragment length
length += (uint)bb.Length;
}
return length;
}
/// <summary>
/// Write dataset to stream
/// </summary>
/// <param name="dataset">Dataset</param>
/// <param name="options">DICOM write options</param>
/// <returns>Status code</returns>
public DicomWriteStatus Write(DcmDataset dataset, DicomWriteOptions options) {
TransferSyntax = dataset.InternalTransferSyntax;
dataset.SelectByteOrder(_syntax.Endian);
foreach (DcmItem item in dataset.Elements) {
if (item.Tag.Element == 0x0000)
continue;
if (Flags.IsSet(options, DicomWriteOptions.CalculateGroupLengths)
&& item.Tag.Group != _group && item.Tag.Group <= 0x7fe0)
{
_group = item.Tag.Group;
_writer.Write((ushort)_group);
_writer.Write((ushort)0x0000);
if (_syntax.IsExplicitVR) {
_writer.Write((byte)'U');
_writer.Write((byte)'L');
_writer.Write((ushort)4);
} else {
_writer.Write((uint)4);
}
_writer.Write((uint)dataset.CalculateGroupWriteLength(_group, _syntax, options));
}
_writer.Write((ushort)item.Tag.Group);
_writer.Write((ushort)item.Tag.Element);
if (_syntax.IsExplicitVR) {
_writer.Write((byte)item.VR.VR[0]);
_writer.Write((byte)item.VR.VR[1]);
}
if (item is DcmItemSequence) {
DcmItemSequence sq = item as DcmItemSequence;
if (_syntax.IsExplicitVR)
_writer.Write((ushort)0x0000);
if (Flags.IsSet(options, DicomWriteOptions.ExplicitLengthSequence) || (item.Tag.IsPrivate && !_syntax.IsExplicitVR)) {
int hl = _syntax.IsExplicitVR ? 12 : 8;
_writer.Write((uint)sq.CalculateWriteLength(_syntax, options & ~DicomWriteOptions.CalculateGroupLengths) - (uint)hl);
} else {
_writer.Write((uint)UndefinedLength);
}
foreach (DcmItemSequenceItem ids in sq.SequenceItems) {
ids.Dataset.ChangeTransferSyntax(dataset.InternalTransferSyntax, null);
_writer.Write((ushort)DicomTags.Item.Group);
_writer.Write((ushort)DicomTags.Item.Element);
if (Flags.IsSet(options, DicomWriteOptions.ExplicitLengthSequenceItem)) {
_writer.Write((uint)ids.CalculateWriteLength(_syntax, options & ~DicomWriteOptions.CalculateGroupLengths) - (uint)8);
} else {
_writer.Write((uint)UndefinedLength);
}
Write(ids.Dataset, options & ~DicomWriteOptions.CalculateGroupLengths);
if (!Flags.IsSet(options, DicomWriteOptions.ExplicitLengthSequenceItem)) {
_writer.Write((ushort)DicomTags.ItemDelimitationItem.Group);
_writer.Write((ushort)DicomTags.ItemDelimitationItem.Element);
_writer.Write((uint)0x00000000);
}
}
if (!Flags.IsSet(options, DicomWriteOptions.ExplicitLengthSequence) && !(item.Tag.IsPrivate && !_syntax.IsExplicitVR)) {
_writer.Write((ushort)DicomTags.SequenceDelimitationItem.Group);
_writer.Write((ushort)DicomTags.SequenceDelimitationItem.Element);
_writer.Write((uint)0x00000000);
}
}
else if (item is DcmFragmentSequence) {
DcmFragmentSequence fs = item as DcmFragmentSequence;
if (_syntax.IsExplicitVR)
_writer.Write((ushort)0x0000);
_writer.Write((uint)UndefinedLength);
_writer.Write((ushort)DicomTags.Item.Group);
_writer.Write((ushort)DicomTags.Item.Element);
if (Flags.IsSet(options, DicomWriteOptions.WriteFragmentOffsetTable) && fs.HasOffsetTable) {
_writer.Write((uint)fs.OffsetTableBuffer.Length);
fs.OffsetTableBuffer.CopyTo(_writer.BaseStream);
} else {
_writer.Write((uint)0x00000000);
}
foreach (ByteBuffer bb in fs.Fragments) {
_writer.Write((ushort)DicomTags.Item.Group);
_writer.Write((ushort)DicomTags.Item.Element);
_writer.Write((uint)bb.Length);
bb.CopyTo(_writer.BaseStream);
}
_writer.Write((ushort)DicomTags.SequenceDelimitationItem.Group);
_writer.Write((ushort)DicomTags.SequenceDelimitationItem.Element);
_writer.Write((uint)0x00000000);
}
else {
DcmElement de = item as DcmElement;
if (_syntax.IsExplicitVR) {
if (de.VR.Is16BitLengthField) {
_writer.Write((ushort)de.Length);
} else {
_writer.Write((ushort)0x0000);
_writer.Write((uint)de.Length);
}
} else {
_writer.Write((uint)de.Length);
}
de.ByteBuffer.CopyTo(_writer.BaseStream);
}
}
return DicomWriteStatus.Success;
}
public abstract uint CalculateWriteLength(DicomTransferSyntax syntax, DicomWriteOptions options);
/// <summary>
/// Save the file as a DICOM Part 10 format file.
/// </summary>
/// <param name="options">The options to use when saving the file.</param>
/// <param name="file">The path of the file to save to.</param>
/// <returns></returns>
public bool Save(string file, DicomWriteOptions options)
{
if (file == null) throw new ArgumentNullException("file");
Filename = file;
using (FileStream fs = File.Create(Filename))
{
bool b = Save(fs, options);
fs.Flush();
fs.Close();
return b;
}
}
internal override uint CalculateWriteLength(TransferSyntax syntax, DicomWriteOptions options)
{
uint length = 0;
length += 4; // element tag
if (syntax.ExplicitVr)
{
length += 2; // vr
length += 6; // length
}
else
{
length += 4; // length
}
if (_values != null)
{
foreach (DicomSequenceItem item in _values)
{
length += 4 + 4; // Sequence Item Tag
length += item.CalculateWriteLength(syntax, options & ~DicomWriteOptions.CalculateGroupLengths);
if (!Flags.IsSet(options, DicomWriteOptions.ExplicitLengthSequenceItem))
length += 4 + 4; // Sequence Item Delimitation Item
}
if (!Flags.IsSet(options, DicomWriteOptions.ExplicitLengthSequence))
length += 4 + 4; // Sequence Delimitation Item
}
return length;
}
public abstract uint CalculateWriteLength(DicomTransferSyntax syntax, DicomWriteOptions options);
public DicomWriteStatus Write(TransferSyntax syntax, DicomAttributeCollection dataset, DicomWriteOptions options)
{
TransferSyntax = syntax;
foreach (DicomAttribute item in dataset)
{
if (item.IsEmpty)
continue;
if (item.Tag.Element == 0x0000)
continue;
if (Flags.IsSet(options, DicomWriteOptions.CalculateGroupLengths)
&& item.Tag.Group != _group)
{
_group = item.Tag.Group;
_writer.Write((ushort) _group);
_writer.Write((ushort) 0x0000);
if (_syntax.ExplicitVr)
{
_writer.Write((byte) 'U');
_writer.Write((byte) 'L');
_writer.Write((ushort) 4);
}
else
{
_writer.Write((uint) 4);
}
_writer.Write((uint) dataset.CalculateGroupWriteLength(_group, _syntax, options));
}
_writer.Write((ushort) item.Tag.Group);
_writer.Write((ushort) item.Tag.Element);
if (_syntax.ExplicitVr)
{
_writer.Write((byte) item.Tag.VR.Name[0]);
_writer.Write((byte) item.Tag.VR.Name[1]);
}
if (item is DicomAttributeSQ)
{
var sq = item as DicomAttributeSQ;
if (_syntax.ExplicitVr)
_writer.Write((ushort) 0x0000);
if (Flags.IsSet(options, DicomWriteOptions.DigitalSignatureMacEncoding))
{
// length field is not written when generating digital signature MAC
}
else if (Flags.IsSet(options, DicomWriteOptions.ExplicitLengthSequence))
{
int hl = _syntax.ExplicitVr ? 12 : 8;
_writer.Write((uint) sq.CalculateWriteLength(_syntax, options & ~DicomWriteOptions.CalculateGroupLengths) - (uint) hl);
}
else
{
_writer.Write((uint) _undefinedLength);
}
foreach (DicomSequenceItem ids in (DicomSequenceItem[]) sq.Values)
{
_writer.Write((ushort) DicomTag.Item.Group);
_writer.Write((ushort) DicomTag.Item.Element);
if (Flags.IsSet(options, DicomWriteOptions.DigitalSignatureMacEncoding))
{
// length field is not written when generating digital signature MAC
}
else if (Flags.IsSet(options, DicomWriteOptions.ExplicitLengthSequenceItem))
{
_writer.Write((uint) ids.CalculateWriteLength(_syntax, options & ~DicomWriteOptions.CalculateGroupLengths));
}
else
{
_writer.Write((uint) _undefinedLength);
}
Write(TransferSyntax, ids, options & ~DicomWriteOptions.CalculateGroupLengths);
if (!Flags.IsSet(options, DicomWriteOptions.ExplicitLengthSequenceItem)
&& !Flags.IsSet(options, DicomWriteOptions.DigitalSignatureMacEncoding))
{
_writer.Write((ushort) DicomTag.ItemDelimitationItem.Group);
_writer.Write((ushort) DicomTag.ItemDelimitationItem.Element);
_writer.Write((uint) 0x00000000);
}
}
if (Flags.IsSet(options, DicomWriteOptions.DigitalSignatureMacEncoding))
{
_writer.Write((ushort) DicomTag.SequenceDelimitationItem.Group);
_writer.Write((ushort) DicomTag.SequenceDelimitationItem.Element);
}
else if (!Flags.IsSet(options, DicomWriteOptions.ExplicitLengthSequence))
{
_writer.Write((ushort) DicomTag.SequenceDelimitationItem.Group);
_writer.Write((ushort) DicomTag.SequenceDelimitationItem.Element);
_writer.Write((uint) 0x00000000);
}
}
else if (item is DicomFragmentSequence)
{
var fs = item as DicomFragmentSequence;
if (_syntax.ExplicitVr)
_writer.Write((ushort) 0x0000);
if (Flags.IsSet(options, DicomWriteOptions.DigitalSignatureMacEncoding))
{
// length field is not written when generating digital signature MAC
}
else
{
_writer.Write((uint) _undefinedLength);
}
_writer.Write((ushort) DicomTag.Item.Group);
_writer.Write((ushort) DicomTag.Item.Element);
if (Flags.IsSet(options, DicomWriteOptions.DigitalSignatureMacEncoding))
{
// length field is not written when generating digital signature MAC
if (fs.HasOffsetTable) fs.OffsetTableBuffer.CopyTo(_writer);
}
else if (Flags.IsSet(options, DicomWriteOptions.WriteFragmentOffsetTable) && fs.HasOffsetTable)
{
_writer.Write((uint) fs.OffsetTableBuffer.Length);
fs.OffsetTableBuffer.CopyTo(_writer);
}
else
{
_writer.Write((uint) 0x00000000);
}
foreach (DicomFragment bb in fs.Fragments)
{
_writer.Write((ushort) DicomTag.Item.Group);
_writer.Write((ushort) DicomTag.Item.Element);
if (Flags.IsSet(options, DicomWriteOptions.DigitalSignatureMacEncoding))
{
// length field is not written when generating digital signature MAC
}
else
{
_writer.Write((uint) bb.Length);
}
bb.GetByteBuffer(_syntax).CopyTo(_writer);
}
if (Flags.IsSet(options, DicomWriteOptions.DigitalSignatureMacEncoding))
{
_writer.Write((ushort) DicomTag.SequenceDelimitationItem.Group);
_writer.Write((ushort) DicomTag.SequenceDelimitationItem.Element);
}
else
{
_writer.Write((ushort) DicomTag.SequenceDelimitationItem.Group);
_writer.Write((ushort) DicomTag.SequenceDelimitationItem.Element);
_writer.Write((uint) 0x00000000);
}
}
else
{
DicomAttribute de = item;
ByteBuffer theData = de.GetByteBuffer(_syntax, dataset.SpecificCharacterSet);
if (_syntax.ExplicitVr)
{
if (de.Tag.VR.Is16BitLengthField)
{
// #10890: Can't encode the value length if the length of the data exceeds max value for a 16-bit field
if (theData.Length > ushort.MaxValue - 1 /* must be even length so max allowed = 65534 */)
throw new DicomDataException(string.Format(
"Value for {0} exceeds maximum stream length allowed for a {1} VR attribute encoded using {2}",
de.Tag, de.Tag.VR, _syntax));
_writer.Write((ushort) theData.Length);
}
else
{
_writer.Write((ushort) 0x0000);
_writer.Write((uint) theData.Length);
}
}
else
{
_writer.Write((uint) theData.Length);
}
if (theData.Length > 0)
theData.CopyTo(_writer);
}
}
return DicomWriteStatus.Success;
}
private void ReadWriteOptionsTest(DicomFile sourceFile, DicomReadOptions readOptions, DicomWriteOptions options)
{
var sourceIconImageSq = (DicomAttributeSQ) sourceFile.DataSet[DicomTags.IconImageSequence];
Assert.IsTrue(!sourceIconImageSq.IsEmpty && !sourceIconImageSq.IsNull && sourceIconImageSq.Count == 1, "File doesn't have icon image sequence");
Assert.IsTrue(sourceFile.Save(options), "Failed to write file");
var newFile = new DicomFile(sourceFile.Filename);
newFile.Load(readOptions);
var resultList = new List<DicomAttributeComparisonResult>();
var result = sourceFile.DataSet.Equals(newFile.DataSet, ref resultList);
string resultMessage = resultList.Count > 0 ? resultList.First().ToString() : string.Empty;
Assert.IsTrue(result, resultMessage);
var newIconImageSq = (DicomAttributeSQ) newFile.DataSet[DicomTags.IconImageSequence];
Assert.IsTrue(!newIconImageSq.IsEmpty && !newIconImageSq.IsNull && newIconImageSq.Count == 1, "New file doesn't have icon image sequence");
// update a tag, and make sure it shows they're different
newFile.DataSet[DicomTags.PatientsName].Values = "NewPatient^First";
Assert.IsFalse(sourceFile.DataSet.Equals(newFile.DataSet, ref resultList));
// Now update the original file with the name, and they should be the same again
sourceFile.DataSet[DicomTags.PatientsName].Values = "NewPatient^First";
Assert.IsTrue(sourceFile.DataSet.Equals(newFile.DataSet));
// Return the original string value.
sourceFile.DataSet[DicomTags.PatientsName].SetStringValue("Patient^Test");
}
/// <summary>
/// Write dataset to stream
/// </summary>
/// <param name="dataset">Dataset</param>
/// <param name="options">DICOM write options</param>
/// <returns>Status code</returns>
public DicomWriteStatus Write(DcmDataset dataset, DicomWriteOptions options)
{
TransferSyntax = dataset.InternalTransferSyntax;
dataset.SelectByteOrder(_syntax.Endian);
foreach (DcmItem item in dataset.Elements)
{
if (item.Tag.Element == 0x0000)
{
continue;
}
if (Flags.IsSet(options, DicomWriteOptions.CalculateGroupLengths) &&
item.Tag.Group != _group && item.Tag.Group <= 0x7fe0)
{
_group = item.Tag.Group;
_writer.Write((ushort)_group);
_writer.Write((ushort)0x0000);
if (_syntax.IsExplicitVR)
{
_writer.Write((byte)'U');
_writer.Write((byte)'L');
_writer.Write((ushort)4);
}
else
{
_writer.Write((uint)4);
}
_writer.Write((uint)dataset.CalculateGroupWriteLength(_group, _syntax, options));
}
_writer.Write((ushort)item.Tag.Group);
_writer.Write((ushort)item.Tag.Element);
if (_syntax.IsExplicitVR)
{
_writer.Write((byte)item.VR.VR[0]);
_writer.Write((byte)item.VR.VR[1]);
}
if (item is DcmItemSequence)
{
DcmItemSequence sq = item as DcmItemSequence;
if (_syntax.IsExplicitVR)
{
_writer.Write((ushort)0x0000);
}
if (Flags.IsSet(options, DicomWriteOptions.ExplicitLengthSequence) || (item.Tag.IsPrivate && !_syntax.IsExplicitVR))
{
int hl = _syntax.IsExplicitVR ? 12 : 8;
_writer.Write((uint)sq.CalculateWriteLength(_syntax, options & ~DicomWriteOptions.CalculateGroupLengths) - (uint)hl);
}
else
{
_writer.Write((uint)UndefinedLength);
}
foreach (DcmItemSequenceItem ids in sq.SequenceItems)
{
ids.Dataset.ChangeTransferSyntax(dataset.InternalTransferSyntax, null);
_writer.Write((ushort)DicomTags.Item.Group);
_writer.Write((ushort)DicomTags.Item.Element);
if (Flags.IsSet(options, DicomWriteOptions.ExplicitLengthSequenceItem))
{
_writer.Write((uint)ids.CalculateWriteLength(_syntax, options & ~DicomWriteOptions.CalculateGroupLengths) - (uint)8);
}
else
{
_writer.Write((uint)UndefinedLength);
}
Write(ids.Dataset, options & ~DicomWriteOptions.CalculateGroupLengths);
if (!Flags.IsSet(options, DicomWriteOptions.ExplicitLengthSequenceItem))
{
_writer.Write((ushort)DicomTags.ItemDelimitationItem.Group);
_writer.Write((ushort)DicomTags.ItemDelimitationItem.Element);
_writer.Write((uint)0x00000000);
}
}
if (!Flags.IsSet(options, DicomWriteOptions.ExplicitLengthSequence) && !(item.Tag.IsPrivate && !_syntax.IsExplicitVR))
{
_writer.Write((ushort)DicomTags.SequenceDelimitationItem.Group);
_writer.Write((ushort)DicomTags.SequenceDelimitationItem.Element);
_writer.Write((uint)0x00000000);
}
}
else if (item is DcmFragmentSequence)
{
DcmFragmentSequence fs = item as DcmFragmentSequence;
if (_syntax.IsExplicitVR)
{
_writer.Write((ushort)0x0000);
}
_writer.Write((uint)UndefinedLength);
_writer.Write((ushort)DicomTags.Item.Group);
_writer.Write((ushort)DicomTags.Item.Element);
if (Flags.IsSet(options, DicomWriteOptions.WriteFragmentOffsetTable) && fs.HasOffsetTable)
{
_writer.Write((uint)fs.OffsetTableBuffer.Length);
fs.OffsetTableBuffer.CopyTo(_writer.BaseStream);
}
else
{
_writer.Write((uint)0x00000000);
}
foreach (ByteBuffer bb in fs.Fragments)
{
_writer.Write((ushort)DicomTags.Item.Group);
_writer.Write((ushort)DicomTags.Item.Element);
_writer.Write((uint)bb.Length);
bb.CopyTo(_writer.BaseStream);
}
_writer.Write((ushort)DicomTags.SequenceDelimitationItem.Group);
_writer.Write((ushort)DicomTags.SequenceDelimitationItem.Element);
_writer.Write((uint)0x00000000);
}
else
{
DcmElement de = item as DcmElement;
if (_syntax.IsExplicitVR)
{
if (de.VR.Is16BitLengthField)
{
_writer.Write((ushort)de.Length);
}
else
{
_writer.Write((ushort)0x0000);
_writer.Write((uint)de.Length);
}
}
else
{
_writer.Write((uint)de.Length);
}
de.ByteBuffer.CopyTo(_writer.BaseStream);
}
}
return(DicomWriteStatus.Success);
}
public static bool IsSet(DicomWriteOptions options, DicomWriteOptions flag)
{
return((options & flag) == flag);
}
private void ReadWriteOptionsTest(DicomFile sourceFile, DicomReadOptions readOptions, DicomWriteOptions options)
{
var sourceIconImageSq = (DicomAttributeSQ)sourceFile.DataSet[DicomTags.IconImageSequence];
Assert.IsTrue(!sourceIconImageSq.IsEmpty && !sourceIconImageSq.IsNull && sourceIconImageSq.Count == 1, "File doesn't have icon image sequence");
Assert.IsTrue(sourceFile.Save(options), "Failed to write file");
var newFile = new DicomFile(sourceFile.Filename);
newFile.Load(readOptions);
var resultList = new List <DicomAttributeComparisonResult>();
var result = sourceFile.DataSet.Equals(newFile.DataSet, ref resultList);
string resultMessage = resultList.Count > 0 ? resultList.First().ToString() : string.Empty;
Assert.IsTrue(result, resultMessage);
var newIconImageSq = (DicomAttributeSQ)newFile.DataSet[DicomTags.IconImageSequence];
Assert.IsTrue(!newIconImageSq.IsEmpty && !newIconImageSq.IsNull && newIconImageSq.Count == 1, "New file doesn't have icon image sequence");
// update a tag, and make sure it shows they're different
newFile.DataSet[DicomTags.PatientsName].Values = "NewPatient^First";
Assert.IsFalse(sourceFile.DataSet.Equals(newFile.DataSet, ref resultList));
// Now update the original file with the name, and they should be the same again
sourceFile.DataSet[DicomTags.PatientsName].Values = "NewPatient^First";
Assert.IsTrue(sourceFile.DataSet.Equals(newFile.DataSet));
// Return the original string value.
sourceFile.DataSet[DicomTags.PatientsName].SetStringValue("Patient^Test");
}
