-// $Header: /cvs/public/gdcm/vtk/vtkGdcmReader.cxx,v 1.5 2003/05/28 19:36:21 frog Exp $
+// $Header: /cvs/public/gdcm/vtk/vtkGdcmReader.cxx,v 1.6 2003/05/29 16:58:24 frog Exp $
//CLEANME#include <vtkByteSwap.h>
#include <stdio.h>
#include <vtkObjectFactory.h>
// FIXME free memory
}
+//----------------------------------------------------------------------------
+// Adds a file name to the list of images to read.
+void vtkGdcmReader::AddFileName(const char* name)
+{
+ // We need to bypass the const pointer [since list<>.push_bash() only
+ // takes a char* (but not a const char*)] by making a local copy:
+ char * LocalName = new char[strlen(name) + 1];
+ strcpy(LocalName, name);
+ this->FileNameList.push_back(LocalName);
+ // Starting from two files we have a stack of images:
+ if(this->FileNameList.size() >= 2)
+ this->SetFileDimensionality(3);
+}
+
+//----------------------------------------------------------------------------
+// Sets up a filename to be read.
+void vtkGdcmReader::SetFileName(const char *name) {
+ vtkImageReader2::SetFileName(name);
+ // Since we maintain a list of filenames (when building a volume)
+ // we additionaly need to maintain this list. First we clean-up the
+ // list and then positionate the incoming filename:
+ this->FileNameList.empty();
+ this->AddFileName(name);
+}
+
+//----------------------------------------------------------------------------
+// vtkGdcmReader can have the file names specified through two ways:
+// (1) by calling the vtkImageReader2::SetFileName(), SetFilePrefix() and
+// SetFilePattern()
+// (2) By successive calls to vtkGdcmReader::SetFileName()
+// When the first method was used by caller we need to update the local
+// filename list
+void vtkGdcmReader::BuilFileListFromPattern()
+{
+ if (! this->FileNameList.empty())
+ return;
+ if (!this->FileName && !this->FilePattern)
+ {
+ vtkErrorMacro("FileNames are not set. Either use AddFileName() or");
+ vtkErrorMacro("specify a FileName or FilePattern.");
+ return;
+ }
+ for (int idx = this->DataExtent[4]; idx <= this->DataExtent[5]; ++idx)
+ {
+ this->ComputeInternalFileName(idx);
+ vtkDebugMacro("Adding file " << this->InternalFileName);
+ this->AddFileName(this->InternalFileName);
+ }
+}
+
+//----------------------------------------------------------------------------
+// When more than one filename is specified (i.e. we expect loading
+// a stack or volume) we need to check the corresponding images are
+// coherent:
+// - they all share the same X dimensions
+// - they all share the same Y dimensions
+// - each file a Z dimension of 1
+// - they all share the same type ( 8 bit signed, or unsigned...)
+bool vtkGdcmReader::CheckFileCoherence()
+{
+ this->BuilFileListFromPattern();
+ if (this->FileNameList.empty())
+ {
+ vtkErrorMacro("FileNames are not set.");
+ return false;
+ }
+ if (this->FileNameList.size() == 1)
+ {
+ vtkDebugMacro("Single file specified.");
+ return true;
+ }
+
+ // Loop on the filenames:
+ // - check for their existence and gdcm "parasability"
+ // - get the coherence check done:
+ bool FoundReferenceFile = false;
+ int ReferenceNX;
+ int ReferenceNY;
+ int ReferenceNZ;
+ std::string ReferenceType;
+ for (std::list<std::string>::iterator FileName = FileNameList.begin();
+ FileName != FileNameList.end();
+ ++FileName)
+ {
+ // Check for file existence.
+ FILE *fp;
+ fp = fopen(FileName->c_str(),"rb");
+ if (!fp)
+ {
+ vtkErrorMacro("Unable to open file " << *FileName);
+ vtkErrorMacro("Removing this file from readed files " << *FileName);
+ FileNameList.remove(*FileName);
+ continue;
+ }
+ fclose(fp);
+
+ // Check for Gdcm parsability
+ gdcmHeader GdcmHeader(FileName->c_str());
+ if (!GdcmHeader.IsReadable())
+ {
+ vtkErrorMacro("Gdcm cannot parse file " << *FileName);
+ vtkErrorMacro("Removing this file from readed files " << *FileName);
+ FileNameList.remove(*FileName);
+ continue;
+ }
+
+ // Coherence stage:
+ int NX = GdcmHeader.GetXSize();
+ int NY = GdcmHeader.GetYSize();
+ int NZ = GdcmHeader.GetZSize();
+ std::string type = GdcmHeader.GetPixelType();
+ if (FoundReferenceFile)
+ {
+ if ( ( NX != ReferenceNX )
+ || ( NY != ReferenceNY )
+ || ( NZ != ReferenceNZ )
+ || ( type != ReferenceType ) )
+ {
+ vtkErrorMacro("This file is not coherent with previous ones"
+ << *FileName);
+ vtkErrorMacro("Removing this file from readed files " << *FileName);
+ FileNameList.remove(*FileName);
+ continue;
+ } else {
+ vtkDebugMacro("File is coherent with previous ones" << *FileName);
+ }
+ } else {
+ // This file shall be the reference:
+ FoundReferenceFile = true;
+ ReferenceNX = NX;
+ ReferenceNY = NY;
+ ReferenceNZ = NZ;
+ ReferenceType = type;
+ vtkDebugMacro("File is taken a coherence references" << *FileName);
+ }
+ } // End of loop on FileName
+
+ if (this->FileNameList.empty())
+ {
+ vtkDebugMacro("No gdcm parsable file.");
+ return false;
+ }
+ if (this->FileNameList.size() == 1)
+ {
+ vtkDebugMacro("Single parsable file left after coherence test.");
+ return true;
+ }
+ return true;
+}
+
+//----------------------------------------------------------------------------
// Configure the output e.g. WholeExtent, spacing, origin, scalar type...
void vtkGdcmReader::ExecuteInformation()
{
// We don't need to positionate the Endian related stuff (by using
// this->SetDataByteOrderToBigEndian() or SetDataByteOrderToLittleEndian()
- // since the // reading of the file is done by gdcm
-
- // But we need to set up the data type for downstream filters:
+ // since the reading of the file is done by gdcm.
+ // But we do need to set up the data type for downstream filters:
std::string type = GdcmHeader.GetPixelType();
if ( type == "8U" )
{
vtkImageReader::ExecuteInformation();
}
+//----------------------------------------------------------------------------
// Update -> UpdateData -> Execute -> ExecuteData (see vtkSource.cxx for
// last step.
// This function (redefinition of vtkImageReader::ExecuteData, see
}
+//----------------------------------------------------------------------------
void vtkGdcmReader::PrintSelf(ostream& os, vtkIndent indent)
{
vtkImageReader::PrintSelf(os,indent);
- //CLEANME os << indent << "TypeSize: " << this->TypeSize << "\n";
+ os << indent << "Filenames : " << endl;
+ vtkIndent nextIndent = indent.GetNextIndent();
+ for (std::list<std::string>::iterator FileName = FileNameList.begin();
+ FileName != FileNameList.end();
+ ++FileName)
+ {
+ os << nextIndent << *FileName << endl ;
+ }
}
projects / gdcm.git / commitdiff