private void VerifyTranscodeFrame(TranscoderTestData testData, DicomFile inputFile)
{
Stream result = _transcoder.TranscodeFrame(inputFile, 0, testData.MetaData.OutputSyntaxUid);
string hashcode = GetByteArrayHashCode(ToByteArray(result));
Assert.Equal(testData.MetaData.Frame0HashCode, hashcode);
}
public async Task <IReadOnlyCollection <Stream> > GetFramesResourceAsync(Stream stream, IEnumerable <int> frames, bool originalTransferSyntaxRequested, string requestedRepresentation)
{
EnsureArg.IsNotNull(stream, nameof(stream));
EnsureArg.IsNotNull(frames, nameof(frames));
DicomFile dicomFile = await DicomFile.OpenAsync(stream);
// Validate requested frame index exists in file and retrieve the pixel data associated with the file.
DicomPixelData pixelData = dicomFile.GetPixelDataAndValidateFrames(frames);
if (!originalTransferSyntaxRequested && !dicomFile.Dataset.InternalTransferSyntax.Equals(DicomTransferSyntax.Parse(requestedRepresentation)))
{
return(frames.Select(frame => new LazyTransformReadOnlyStream <DicomFile>(
dicomFile,
df => _transcoder.TranscodeFrame(df, frame, requestedRepresentation)))
.ToArray());
}
else
{
return(frames.Select(
frame => new LazyTransformReadOnlyStream <DicomFile>(
dicomFile,
df => GetFrameAsDicomData(pixelData, frame)))
.ToArray());
}
}
public void GivenSupported16bitTransferSyntax_WhenRetrievingFrameAndAskingForConversion_ReturnedFileHasExpectedTransferSyntax(
DicomTransferSyntax tsFrom,
DicomTransferSyntax tsTo,
PhotometricInterpretation photometricInterpretation)
{
DicomFile dicomFile = StreamAndStoredFileFromDataset(photometricInterpretation, false, tsFrom).Result.dicomFile;
dicomFile.Dataset.ToInstanceIdentifier();
_transcoder.TranscodeFrame(dicomFile, 1, tsTo.UID.UID);
}
public async Task GivenDicomFileWithFrames_WhenRetrievingWithTransferSyntax_ThenTranscoderShouldBeInvokedAsExpected(bool originalTransferSyntaxRequested, string requestedRepresentation, bool shouldBeInvoked)
{
(DicomFile file, Stream stream) = StreamAndStoredFileFromDataset(GenerateDatasetsFromIdentifiers(), 1).Result;
ITranscoder transcoder = Substitute.For <ITranscoder>();
transcoder.TranscodeFrame(Arg.Any <DicomFile>(), Arg.Any <int>(), Arg.Any <string>()).Returns(_recyclableMemoryStreamManager.GetStream());
FrameHandler frameHandler = new FrameHandler(transcoder, _recyclableMemoryStreamManager);
IReadOnlyCollection <Stream> result = await frameHandler.GetFramesResourceAsync(stream, new int[] { 0 }, originalTransferSyntaxRequested, requestedRepresentation);
// Call Position of LazyTransformReadOnlyStream so that transcoder.TranscodeFrame is invoked
long pos = result.First().Position;
if (shouldBeInvoked)
{
transcoder.Received().TranscodeFrame(Arg.Any <DicomFile>(), Arg.Any <int>(), Arg.Any <string>());
}
else
{
transcoder.DidNotReceive().TranscodeFrame(Arg.Any <DicomFile>(), Arg.Any <int>(), Arg.Any <string>());
}
}
