private void SetupEncapsulatedImageWithIconSequence(DicomFile file, bool encapsulateIconPixelData)
{
var codec = new NullDicomCodec();
DicomAttributeCollection dataSet = file.DataSet;
SetupSecondaryCapture(dataSet);
SetupMetaInfo(file);
file.TransferSyntax = TransferSyntax.ImplicitVrLittleEndian;
file.ChangeTransferSyntax(codec.CodecTransferSyntax);
// explicitly create the icon sequence as either encapsulated or native, so that we are not depending on correct behaviour elsewhere...
CreateIconImageSequence(dataSet);
if (encapsulateIconPixelData)
{
var dataset = ((DicomAttributeSQ)dataSet[DicomTags.IconImageSequence])[0];
var pixelData = dataset[DicomTags.PixelData];
var pd = new DicomUncompressedPixelData(dataset);
using (var pixelStream = ((DicomAttributeBinary)pixelData).AsStream())
{
//Before compression, make the pixel data more "typical", so it's harder to mess up the codecs.
//NOTE: Could combine mask and align into one method so we're not iterating twice, but I prefer having the methods separate.
if (DicomUncompressedPixelData.RightAlign(pixelStream, pd.BitsAllocated, pd.BitsStored, pd.HighBit))
{
var newHighBit = (ushort)(pd.HighBit - pd.LowBit);
pd.HighBit = newHighBit; //correct high bit after right-aligning.
dataset[DicomTags.HighBit].SetUInt16(0, newHighBit);
}
DicomUncompressedPixelData.ZeroUnusedBits(pixelStream, pd.BitsAllocated, pd.BitsStored, pd.HighBit);
}
// Set transfer syntax before compression, the codecs need it.
var fragments = new DicomCompressedPixelData(pd)
{
TransferSyntax = codec.CodecTransferSyntax
};
codec.Encode(pd, fragments, null);
fragments.UpdateAttributeCollection(dataset);
}
}
public void TestFixtureTearDown()
{
NullDicomCodec.Unregister();
DicomImplementation.UnitTest = false;
}
public void TestFixtureSetUp()
{
DicomImplementation.UnitTest = true;
NullDicomCodec.Register();
}
