First version of a general JPEG-writer tester

(Still to be checked ...)

diff --git a/Testing/TestReadWriteJPEGReadCompare.cxx b/Testing/TestReadWriteJPEGReadCompare.cxx
new file mode 100755 (executable)
index 0000000..647189e
--- /dev/null
+++ b/Testing/TestReadWriteJPEGReadCompare.cxx
@@ -0,0 +1,190 @@
+/*=========================================================================
+
+  Program:   gdcm
+  Module:    $RCSfile: TestReadWriteJPEGReadCompare.cxx,v $
+  Language:  C++
+  Date:      $Date: 2007/08/27 16:09:06 $
+  Version:   $Revision: 1.1 $
+
+  Copyright (c) CREATIS (Centre de Recherche et d'Applications en Traitement de
+  l'Image). All rights reserved. See Doc/License.txt or
+  http://www.creatis.insa-lyon.fr/Public/Gdcm/License.html for details.
+
+     This software is distributed WITHOUT ANY WARRANTY; without even
+     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+     PURPOSE.  See the above copyright notices for more information.
+
+=========================================================================*/
+#include "gdcmFile.h"
+#include "gdcmFileHelper.h"
+#include "gdcmDebug.h"
+
+//Generated file:
+#include "gdcmDataImages.h"
+
+static int CompareInternalJPEG(std::string const &filename, std::string const &output)
+{
+   std::cout << "   Testing: " << filename << std::endl;
+
+   //////////////// Step 1 (see above description):
+
+   GDCM_NAME_SPACE::File *file = GDCM_NAME_SPACE::File::New( );
+   file->SetFileName( filename );
+   file->Load ();
+   if( !file->IsReadable() )
+   {
+      std::cout << "Failed" << std::endl
+                << "Test::TestReadWriteJPEGReadCompare: Image not gdcm compatible:"
+                << filename << std::endl;
+      file->Delete();
+      return 1;
+   }
+   std::cout << "           step 1...";
+
+   //////////////// Step 2:
+   GDCM_NAME_SPACE::FileHelper *filehelper = GDCM_NAME_SPACE::FileHelper::New( file );
+   int dataSize    = filehelper->GetImageDataSize();
+   uint8_t *imageData = filehelper->GetImageData(); //EXTREMELY IMPORTANT
+          // Sure, it is : It's up to the user to decide if he wants to
+          // GetImageData or if he wants to GetImageDataRaw
+          // (even if we do it by setting a flag, *he* will have to decide)
+
+   //filehelper->SetImageData(imageData, dataSize);
+
+   filehelper->SetWriteModeToRGB();
+  
+   filehelper->SetWriteTypeToJPEG(  ); 
+   filehelper->SetUserData(imageData,dataSize); 
+   filehelper->Write( output );  
+   std::cout << "2...";
+
+   //////////////// Step 3:
+   GDCM_NAME_SPACE::File *fileout = GDCM_NAME_SPACE::File::New();
+   fileout->SetFileName( output );
+   fileout->Load();
+  // gdcm::FileHelper *reread = new gdcm::FileHelper( output ); // deprecated
+
+   if( !fileout->IsReadable() )
+   {
+      std::cout << "Failed" << std::endl
+                << "Test::TestReadWriteReadCompare: Could not parse the newly "
+                << "written image:" << filename << std::endl;
+      file->Delete();
+      filehelper->Delete();
+      fileout->Delete();
+      return 1;
+   }
+
+   GDCM_NAME_SPACE::FileHelper *reread = GDCM_NAME_SPACE::FileHelper::New( fileout );
+
+   std::cout << "3...";
+   // For the next step:
+   int    dataSizeWritten = reread->GetImageDataSize();
+   uint8_t *imageDataWritten = reread->GetImageData();
+
+   //////////////// Step 4:
+   // Test the image size
+   if (file->GetXSize() != reread->GetFile()->GetXSize() ||
+       file->GetYSize() != reread->GetFile()->GetYSize() ||
+       file->GetZSize() != reread->GetFile()->GetZSize())
+   {
+      std::cout << "Failed" << std::endl
+         << "        X Size differs: "
+         << "X: " << file->GetXSize() << " # "
+                  << reread->GetFile()->GetXSize() << " | "
+         << "Y: " << file->GetYSize() << " # "
+                  << reread->GetFile()->GetYSize() << " | "
+         << "Z: " << file->GetZSize() << " # "
+                  << reread->GetFile()->GetZSize() << std::endl;
+      file->Delete();
+      filehelper->Delete();
+      fileout->Delete();
+      reread->Delete();
+      return 1;
+   }
+
+   // Test the data size
+   // beware of odd length Pixel Element!
+   int dataSizeFixed = dataSize + dataSize%2;
+   int dataSizeWrittenFixed = dataSizeWritten + dataSizeWritten%2;
+
+   if (dataSizeFixed != dataSizeWrittenFixed)
+   {
+      std::cout << "Failed" << std::endl
+         << "        Pixel areas lengths differ: "
+         << dataSize << " # " << dataSizeWritten << std::endl;
+      file->Delete();
+      filehelper->Delete();
+      fileout->Delete();
+      reread->Delete();
+      return 1;
+   }
+
+   // Test the data's content
+   if (memcmp(imageData, imageDataWritten, dataSize) !=0)
+   {
+      std::cout << "Failed" << std::endl
+         << "        Pixel differ (as expanded in memory)." << std::endl;
+      file->Delete();
+      filehelper->Delete();
+      fileout->Delete();
+      reread->Delete();
+      return 1;
+   }
+   std::cout << "4...OK." << std::endl ;
+
+   //////////////// Clean up:
+   file->Delete();
+   filehelper->Delete();
+   fileout->Delete();
+   reread->Delete();
+
+   return 0;
+}
+
+int TestReadWriteJPEGReadCompare(int argc, char *argv[]) 
+{
+   int result = 0;
+
+   if (argc == 4)
+      GDCM_NAME_SPACE::Debug::DebugOn();
+
+   if (argc >= 3)
+   {
+      const std::string input  = argv[1];
+      const std::string output = argv[2];
+      result += CompareInternalJPEG(input, output);
+   }
+   else if( argc > 4 || argc == 2 )
+   {
+      std::cout << "Please read the manual" << std::endl;
+   }
+   else
+   {
+      std::cout<< "Test::TestReadWriteJPEGReadCompare: description " << std::endl;
+      std::cout << "   For all images in gdcmData (and not blacklisted in "
+                   "Test/CMakeLists.txt)" << std::endl;
+      std::cout << "   apply the following multistep test: " << std::endl;
+      std::cout << "   step 1: parse the image (as gdcmFile) and call"
+                << " IsReadable(). " << std::endl;
+      std::cout << "   step 2: write the corresponding image in JPEG DICOM V3 "
+                << "with explicit" << std::endl
+                << "           Value Representation in temporary file "
+                << "TestReadWriteReadCompare.dcm." << std::endl;
+      std::cout << "   step 3: read the image written on step2 and call "
+                << " IsReadable(). " << std::endl;
+      std::cout << "   step 4: compare (in memory with memcmp) that the two "
+                << "images " << std::endl
+                << "           match (as expanded by gdcm)." << std::endl;
+   
+      int i = 0;
+      while( gdcmDataImages[i] != 0 )
+      {
+         std::string filename = GDCM_DATA_ROOT;
+         filename += "/";
+         filename += gdcmDataImages[i++];
+         result += CompareInternalJPEG(filename, "TestReadWriteJPEGReadCompare.dcm"); 
+      }
+   }
+   return result;
+}