1 /*=========================================================================
4 Module: $RCSfile: TestReadWriteReadCompare.cxx,v $
6 Date: $Date: 2005/01/21 11:40:54 $
7 Version: $Revision: 1.20 $
9 Copyright (c) CREATIS (Centre de Recherche et d'Applications en Traitement de
10 l'Image). All rights reserved. See Doc/License.txt or
11 http://www.creatis.insa-lyon.fr/Public/Gdcm/License.html for details.
13 This software is distributed WITHOUT ANY WARRANTY; without even
14 the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
15 PURPOSE. See the above copyright notices for more information.
17 =========================================================================*/
19 #include "gdcmFileHelper.h"
22 #include "gdcmDataImages.h"
24 int CompareInternal(std::string const & filename, std::string const & output)
26 std::cout << " Testing: " << filename << std::endl;
28 //////////////// Step 1 (see above description):
30 gdcm::File *header = new gdcm::File( filename );
31 if( !header->IsReadable() )
33 std::cerr << "Test::TestReadWriteReadCompare: Image not gdcm compatible:"
34 << filename << std::endl;
38 std::cout << " step 1...";
40 //////////////// Step 2:
42 gdcm::FileHelper* file = new gdcm::FileHelper( header );
43 int dataSize = file->GetImageDataSize();
44 uint8_t* imageData = file->GetImageData(); //EXTREMELY IMPORTANT
45 // Sure, it is : It's up to the user to decide if he wants to
46 // GetImageData or if he wants to GetImageDataRaw
47 // (even if we do it by setting a flag, he will have to decide)
49 /// \todo Following line commented out because gdcmFile::SetImageData() is
50 /// brain dead: it sets ImageDataSize to its argument and PixelRead to a.
51 /// Later on, when writing gdcmFile::WriteBase()
52 /// and because PixelRead == 1 we call
53 /// PixelElement->SetLength( ImageDataSizeRaw );
54 /// where we use ImageDataSizeRAW instead of ImageDataSize !
55 /// But when the original image made the transformation LUT -> RGB,
56 /// ImageDataSizeRaw is the third of ImageDataSize, and there is no
57 /// reason (since we called gdcmFile::SetImageData) to use the Raw image
58 /// size... This "bug" in gdcmFile made that we had to black list
59 /// images 8BitsUncompressedColor.dcm, OT-PAL-8-face.dcm and
60 /// US-PAL-8-10x-echo.dcm...
61 /// In conclusion fix gdcmFile, and then uncomment the following line.
63 // --> I did. ctest doesn't break. But ... is it enought to say it's OK ?
65 file->SetImageData(imageData, dataSize);
67 file->SetWriteModeToRGB();
68 file->WriteDcmExplVR( output );
71 //////////////// Step 3:
73 gdcm::FileHelper* reread = new gdcm::FileHelper( output );
74 if( !reread->GetFile()->IsReadable() )
76 std::cerr << "Failed" << std::endl
77 << "Test::TestReadWriteReadCompare: Could not reread image "
78 << "written:" << filename << std::endl;
86 int dataSizeWritten = reread->GetImageDataSize();
87 uint8_t* imageDataWritten = reread->GetImageData();
89 //////////////// Step 4:
90 // Test the image size
91 if (header->GetXSize() != reread->GetFile()->GetXSize() ||
92 header->GetYSize() != reread->GetFile()->GetYSize() ||
93 header->GetZSize() != reread->GetFile()->GetZSize())
95 std::cout << "Failed" << std::endl
96 << " X Size differs: "
97 << "X: " << header->GetXSize() << " # "
98 << reread->GetFile()->GetXSize() << " | "
99 << "Y: " << header->GetYSize() << " # "
100 << reread->GetFile()->GetYSize() << " | "
101 << "Z: " << header->GetZSize() << " # "
102 << reread->GetFile()->GetZSize() << std::endl;
109 // Test the data size
110 if (dataSize != dataSizeWritten)
112 std::cout << "Failed" << std::endl
113 << " Pixel areas lengths differ: "
114 << dataSize << " # " << dataSizeWritten << std::endl;
121 // Test the data's content
122 if (int res = memcmp(imageData, imageDataWritten, dataSize) !=0)
125 std::cout << "Failed" << std::endl
126 << " Pixel differ (as expanded in memory)." << std::endl;
132 std::cout << "4...OK." << std::endl ;
134 //////////////// Clean up:
142 int TestReadWriteReadCompare(int argc, char* argv[])
147 const std::string input = argv[1];
148 const std::string output = argv[2];
149 result += CompareInternal(input, output);
151 else if( argc > 3 || argc == 2 )
153 std::cerr << "Please read the manual" << std::endl;
157 std::cout<< "Test::TestReadWriteReadCompare: description " << std::endl;
158 std::cout << " For all images in gdcmData (and not blacklisted in "
159 "Test/CMakeLists.txt)" << std::endl;
160 std::cout << " apply the following multistep test: " << std::endl;
161 std::cout << " step 1: parse the image (as gdcmFile) and call"
162 << " IsReadable(). " << std::endl;
163 std::cout << " step 2: write the corresponding image in DICOM V3 "
164 << "with explicit" << std::endl
165 << " Value Representation in temporary file "
166 << "TestReadWriteReadCompare.dcm." << std::endl;
167 std::cout << " step 3: read the image written on step2 and call "
168 << " IsReadable(). " << std::endl;
169 std::cout << " step 4: compare (in memory with memcmp) that the two "
170 << "images " << std::endl
171 << " match (as expanded by gdcm)." << std::endl;
174 while( gdcmDataImages[i] != 0 )
176 std::string filename = GDCM_DATA_ROOT;
178 filename += gdcmDataImages[i++];
179 result += CompareInternal(filename, "TestReadWriteReadCompare.dcm");