public void OnElement_ValidData_AddsCorrectTypeToDataset(DicomTag tag, DicomVR vr, string data, Type expected)
{
var dataset = new DicomDataset();
var observer = new DicomDatasetReaderObserver(dataset);
var buffer = new MemoryByteBuffer(Encoding.ASCII.GetBytes(data));
observer.OnElement(null, tag, vr, buffer);
Assert.IsType(expected, dataset.First());
}
public void AddOrUpdatePixelData_InternalTransferSyntax_Succeeds()
{
var ds = new DicomDataset( );
var data = new IO.Buffer.MemoryByteBuffer(new byte[] { 255 }); //dummy data
var newSyntax = DicomTransferSyntax.DeflatedExplicitVRLittleEndian;
ds.AddOrUpdatePixelData(DicomVR.OB, data);
Assert.Equal(DicomTransferSyntax.ExplicitVRLittleEndian, ds.InternalTransferSyntax);
ds.AddOrUpdatePixelData(DicomVR.OB, data, newSyntax);
Assert.Equal(newSyntax, ds.InternalTransferSyntax);
}
public void All_VRs_should_have_one_and_only_one_matching_DicomElement_subclasses()
{
var codes = new Collection<string>();
var types =
Assembly.GetAssembly(typeof(DicomElement))
.GetTypes()
.Where(t => (t.IsSubclassOf(typeof(DicomElement)) || t == typeof(DicomSequence)) && !t.IsAbstract);
var mbb = new MemoryByteBuffer(new byte[0]);
foreach (var type in types)
{
DicomItem item;
var ctor = type.GetConstructor(new[] { typeof(DicomTag), typeof(IByteBuffer) });
if (ctor != null)
{
item = (DicomItem)ctor.Invoke(new object[] { new DicomTag(0, 0), mbb });
}
else
{
ctor = type.GetConstructor(new[] { typeof(DicomTag), typeof(Encoding), typeof(IByteBuffer) });
if (ctor != null)
{
item = (DicomItem)ctor.Invoke(new object[] { new DicomTag(0, 0), Encoding.ASCII, mbb });
}
else
{
ctor = type.GetConstructor(new[] { typeof(DicomTag), typeof(DicomDataset[]) });
Assert.NotNull(ctor);
item = (DicomItem)ctor.Invoke(new object[] { new DicomTag(0, 0), new DicomDataset[0] });
}
}
Assert.DoesNotContain(item.ValueRepresentation.Code, codes);
codes.Add(item.ValueRepresentation.Code);
}
foreach (var vr in AllVRs)
{
Assert.Contains(vr, codes);
}
}
private void AddColorImage(Bitmap bitmap, int index)
{
if (_currentFilmBox == null)
{
throw new InvalidOperationException("Start film box first!");
}
if (index < 0 || index > _currentFilmBox.BasicImageBoxes.Count)
{
throw new ArgumentOutOfRangeException("Image box index out of range");
}
if (bitmap.PixelFormat != PixelFormat.Format24bppRgb && bitmap.PixelFormat != PixelFormat.Format32bppArgb &&
bitmap.PixelFormat != PixelFormat.Format32bppRgb)
{
throw new ArgumentException("Not supported bitmap format");
}
var dataset = new DicomDataset();
dataset.Add <ushort>(DicomTag.Columns, (ushort)bitmap.Width)
.Add <ushort>(DicomTag.Rows, (ushort)bitmap.Height)
.Add <ushort>(DicomTag.BitsAllocated, 8)
.Add <ushort>(DicomTag.BitsStored, 8)
.Add <ushort>(DicomTag.HighBit, 7)
.Add(DicomTag.PixelRepresentation, (ushort)PixelRepresentation.Unsigned)
.Add(DicomTag.PlanarConfiguration, (ushort)PlanarConfiguration.Interleaved)
.Add <ushort>(DicomTag.SamplesPerPixel, 3)
.Add(DicomTag.PhotometricInterpretation, PhotometricInterpretation.Rgb.Value);
var pixelData = DicomPixelData.Create(dataset, true);
var pixels = GetColorbytes(bitmap);
var buffer = new Dicom.IO.Buffer.MemoryByteBuffer(pixels.Data);
pixelData.AddFrame(buffer);
var imageBox = _currentFilmBox.BasicImageBoxes[index];
imageBox.ImageSequence = dataset;
pixels.Dispose();
}
/// <summary>
/// Gets a byte buffer of specified length from the current position and moves to subsequent position.
/// </summary>
/// <param name="count">Number of bytes to read.</param>
/// <returns>Byte buffer containing the read bytes.</returns>
public IByteBuffer GetBuffer(uint count)
{
IByteBuffer buffer = null;
if (count == 0) buffer = EmptyBuffer.Value;
else if (count >= this.LargeObjectSize)
{
buffer = new StreamByteBuffer(_stream, _stream.Position, count);
_stream.Seek((int)count, SeekOrigin.Current);
}
else buffer = new MemoryByteBuffer(GetBytes((int)count));
return buffer;
}
private void AddGreyscaleImage(Bitmap bitmap, int index)
{
if (_currentFilmBox == null)
throw new InvalidOperationException("Start film box first!");
if (index < 0 || index > _currentFilmBox.BasicImageBoxes.Count)
// ReSharper disable once NotResolvedInText
throw new ArgumentOutOfRangeException("Image box index out of range");
if (bitmap.PixelFormat != PixelFormat.Format24bppRgb &&
bitmap.PixelFormat != PixelFormat.Format32bppArgb &&
bitmap.PixelFormat != PixelFormat.Format32bppRgb
)
throw new ArgumentException("Not supported bitmap format");
var dataset = new DicomDataset
{
{DicomTag.Columns, (ushort) bitmap.Width},
{DicomTag.Rows, (ushort) bitmap.Height}
};
var pixelData = DicomPixelData.Create(dataset, true);
pixelData.BitsStored = 8;
pixelData.BitsAllocated = 8;
pixelData.SamplesPerPixel = 1;
pixelData.HighBit = 7;
pixelData.PixelRepresentation = (ushort)PixelRepresentation.Unsigned;
pixelData.PlanarConfiguration = (ushort)PlanarConfiguration.Interleaved;
pixelData.PhotometricInterpretation = PhotometricInterpretation.Monochrome1;
var pixels = GetGreyBytes(bitmap);
var buffer = new MemoryByteBuffer(pixels.Data);
pixelData.AddFrame(buffer);
var imageBox = _currentFilmBox.BasicImageBoxes[index];
imageBox.ImageSequence = dataset;
imageBox.Polarity = Polarity;
pixels.Dispose();
}
public override void Decode(
DicomPixelData oldPixelData,
DicomPixelData newPixelData,
DicomCodecParams parameters)
{
for (var frame = 0; frame < oldPixelData.NumberOfFrames; frame++)
{
var rleData = oldPixelData.GetFrame(frame);
// Create new frame data of even length
var frameSize = newPixelData.UncompressedFrameSize;
if ((frameSize & 1) == 1)
{
++frameSize;
}
var frameData = new MemoryByteBuffer(new byte[frameSize]);
var pixelCount = oldPixelData.Width * oldPixelData.Height;
var numberOfSegments = oldPixelData.BytesAllocated * oldPixelData.SamplesPerPixel;
var decoder = new RLEDecoder(rleData);
if (decoder.NumberOfSegments != numberOfSegments)
{
throw new InvalidOperationException("Unexpected number of RLE segments!");
}
for (var s = 0; s < numberOfSegments; s++)
{
var sample = s / newPixelData.BytesAllocated;
var sabyte = s % newPixelData.BytesAllocated;
int pos, offset;
if (newPixelData.PlanarConfiguration == PlanarConfiguration.Interleaved)
{
pos = sample * newPixelData.BytesAllocated;
offset = newPixelData.SamplesPerPixel * newPixelData.BytesAllocated;
}
else
{
pos = sample * newPixelData.BytesAllocated * pixelCount;
offset = newPixelData.BytesAllocated;
}
pos += newPixelData.BytesAllocated - sabyte - 1;
decoder.DecodeSegment(s, frameData, pos, offset);
}
newPixelData.AddFrame(frameData);
}
}
private void CreateDicomFile(int[] frameIdArray, string directoryName, string fileName)
{
int frameId = frameIdArray[0];
int fileId = ObjectContext.DicomFrame.Single(x => x.FrameId == frameId).FileId;
var query1 = from dev in ObjectContext.DicomElementValue.Include("DicomElement")
where dev.FileId == fileId && (dev.GroupNumber != 40 && dev.GroupNumber != 32736) // Okrem GroupNumber 0x0028 a 0x7FE0
select new { dev.GroupNumber, dev.ElementNumber, dev.Value, dev.DicomElement.ValueRepresentation };
DicomDataset dataset = new DicomDataset();
foreach (var item in query1)
{
if (item.ValueRepresentation == "PN")
{
var x = new DicomPersonName(new DicomTag((ushort) item.GroupNumber, (ushort) item.ElementNumber),
Encoding.UTF7, item.Value);
dataset.Add(x);
}
else
{
dataset.Add(new DicomTag((ushort)item.GroupNumber, (ushort)item.ElementNumber), item.Value);
}
}
var query2 = from dev in ObjectContext.DicomElementValue
where dev.FileId == fileId && dev.GroupNumber == 40 // GroupNumber 0x0028
select new { dev.GroupNumber, dev.ElementNumber, dev.Value };
DicomPixelData pixelData = DicomPixelData.Create(dataset, true);
pixelData.BitsAllocated =
ushort.Parse(query2.Single(x => (x.GroupNumber == 40 && x.ElementNumber == 256)).Value);
pixelData.BitsStored =
ushort.Parse(query2.Single(x => (x.GroupNumber == 40 && x.ElementNumber == 257)).Value);
pixelData.HighBit =
ushort.Parse(query2.Single(x => (x.GroupNumber == 40 && x.ElementNumber == 258)).Value);
pixelData.PhotometricInterpretation =
PhotometricInterpretation.Parse(query2.Single(x => (x.GroupNumber == 40 && x.ElementNumber == 4)).Value);
pixelData.PixelRepresentation =
(PixelRepresentation)int.Parse(query2.Single(x => (x.GroupNumber == 40 && x.ElementNumber == 259)).Value);
pixelData.PlanarConfiguration =
(PlanarConfiguration)int.Parse(query2.Single(x => (x.GroupNumber == 40 && x.ElementNumber == 6)).Value);
pixelData.SamplesPerPixel =
ushort.Parse(query2.Single(x => (x.GroupNumber == 40 && x.ElementNumber == 2)).Value);
ushort width = ushort.Parse(query2.Single(x => (x.GroupNumber == 40 && x.ElementNumber == 17)).Value);
ushort height = ushort.Parse(query2.Single(x => (x.GroupNumber == 40 && x.ElementNumber == 16)).Value);
var query3 = from dfr in ObjectContext.DicomFrame
where frameIdArray.Contains(dfr.FrameId)
orderby dfr.FrameId ascending
select new { dfr.Frame };
foreach (var item in query3)
{
byte[] pixels = item.Frame;
MemoryByteBuffer buffer = new MemoryByteBuffer(pixels);
pixelData.Width = width;
pixelData.Height = height;
pixelData.AddFrame(buffer);
}
string dirPath = HttpRuntime.AppDomainAppPath + @"\temp\" + directoryName;
string filePath = dirPath + @"\" + fileName + ".dcm";
if (!Directory.Exists(dirPath))
Directory.CreateDirectory(dirPath);
var file = new Dicom.DicomFile(dataset);
file.Save(filePath);
}
