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1 /*=========================================================================
2
3   Program:   gdcm
4   Module:    $RCSfile: TestReadWriteReadCompare.cxx,v $
5   Language:  C++
6   Date:      $Date: 2007/09/05 09:55:02 $
7   Version:   $Revision: 1.34 $
8
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.
12
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.
16
17 =========================================================================*/
18 #include "gdcmFile.h"
19 #include "gdcmFileHelper.h"
20 #include "gdcmDebug.h"
21
22 #include "gdcmGlobal.h"
23 #include "gdcmTS.h"
24
25 //Generated file:
26 #include "gdcmDataImages.h"
27
28 const unsigned int MAX_NUMBER_OF_DIFFERENCE = 10;
29
30 int nb_of_success___;
31 int nb_of_failure___;
32 int nb_of_diffPM1___;
33 static int CompareInternal(std::string const &filename, std::string const &output)
34 {
35    std::cout << "----------------------------------------------------------------------" << std::endl
36              << "   Testing: " << filename << std::endl;
37
38    //////////////// Step 1 (see above description):
39
40    GDCM_NAME_SPACE::File *file = GDCM_NAME_SPACE::File::New( );
41    file->SetFileName( filename );
42    file->Load ();
43    if( !file->IsReadable() )
44    {
45       std::cout << "Failed" << std::endl
46                 << "Test::TestReadWriteReadCompare: Image not gdcm compatible:"
47                 << filename << std::endl;
48       file->Delete();
49       nb_of_failure___++;
50       return 1;
51    }
52    std::cout << "           step 1...";
53
54    //////////////// Step 2:
55    GDCM_NAME_SPACE::FileHelper *filehelper = GDCM_NAME_SPACE::FileHelper::New( file );
56    int dataSize       = filehelper->GetImageDataSize();
57    uint8_t *imageData = filehelper->GetImageData(); //EXTREMELY IMPORTANT
58           // Sure, it is : It's up to the user to decide if he wants to
59           // GetImageData or if he wants to GetImageDataRaw
60           // (even if we do it by setting a flag, *he* will have to decide)
61
62    //filehelper->SetImageData(imageData, dataSize);
63
64    filehelper->SetContentType(GDCM_NAME_SPACE::UNMODIFIED_PIXELS_IMAGE); //  pixels remain unimpared
65    filehelper->SetWriteModeToRGB( );
66
67    filehelper->SetUserData(imageData,dataSize); // This one ensures the compression
68    filehelper->Write( output );
69
70    std::cout << "2...";
71
72    //////////////// Step 3:
73    GDCM_NAME_SPACE::File *fileout = GDCM_NAME_SPACE::File::New();
74    fileout->SetFileName( output );
75    fileout->Load();
76
77    if( !fileout->IsReadable() )
78    {
79       std::cout << "Failed" << std::endl
80                 << "Test::TestReadWriteReadCompare: Could not parse the newly "
81                 << "written image:" << filename << std::endl;
82       file->Delete();
83       filehelper->Delete();
84       fileout->Delete();
85       nb_of_failure___++;
86       return 1;
87    }
88
89    GDCM_NAME_SPACE::FileHelper *reread = GDCM_NAME_SPACE::FileHelper::New( fileout );
90
91    std::cout << "3...";
92    // For the next step:
93    int     dataSizeWritten   = reread->GetImageDataSize();
94    uint8_t *imageDataWritten = reread->GetImageData();
95  
96    //////////////// Step 4:
97    // Test the image size
98    if (file->GetXSize() != reread->GetFile()->GetXSize() ||
99        file->GetYSize() != reread->GetFile()->GetYSize() ||
100        file->GetZSize() != reread->GetFile()->GetZSize())
101    {
102       std::cout << "Failed" << std::endl
103          << "        Size differs: "
104          << "X: " << file->GetXSize() << " # "
105                   << reread->GetFile()->GetXSize() << " | "
106          << "Y: " << file->GetYSize() << " # "
107                   << reread->GetFile()->GetYSize() << " | "
108          << "Z: " << file->GetZSize() << " # "
109                   << reread->GetFile()->GetZSize() << std::endl;
110       file->Delete();
111       filehelper->Delete();
112       fileout->Delete();
113       reread->Delete();
114       nb_of_failure___++;      
115       return 1;
116    }
117
118    // Test the data size
119    // beware of odd length Pixel Element!
120    if (dataSize != dataSizeWritten)
121       std::cout << std::endl << "dataSize:" << dataSize << " dataSizeWritten:" << dataSizeWritten << std::endl;
122
123    int dataSizeFixed = dataSize - dataSize%2;
124    int dataSizeWrittenFixed = dataSizeWritten - dataSizeWritten%2;
125
126    if (dataSizeFixed != dataSizeWrittenFixed)
127    {
128       std::cout << "Failed" << std::endl
129          << "        Pixel areas lengths differ: "
130          << dataSize << " # " << dataSizeWritten << std::endl;
131       file->Delete();
132       filehelper->Delete();
133       fileout->Delete();
134       reread->Delete();
135       nb_of_failure___++;      
136       return 1;
137    }
138
139    // Test the data content
140    unsigned int j      = 0;
141    unsigned int nbDiff = 0;
142    if (memcmp(imageData, imageDataWritten, dataSizeFixed) !=0)
143    {
144       std::string PixelType = filehelper->GetFile()->GetPixelType();
145       std::string ts        = filehelper->GetFile()->GetTransferSyntax();
146
147        for(int i1=0; i1<dataSizeFixed; i1++)
148          if (abs ((int)imageData[i1]-(int)imageDataWritten[i1]) > 2) {
149             nbDiff++;
150            // break; // at debug time, keep line commented out; (uncommenting will save CPU time)
151          }
152
153        if (nbDiff!=0)
154        {
155           std::cout << std::endl << filename << " Failed : "
156                     << nbDiff/(file->GetBitsAllocated()/8) << " Pixels -amongst "
157                     << dataSizeFixed/(file->GetBitsAllocated()/8) << "- (" 
158                     << PixelType << " bAlloc:" << file->GetBitsAllocated() << " bStored:" << file->GetBitsStored()
159                     << ") differ (as expanded in memory)."
160                     << std::endl
161                     << "        compression : " 
162                     << GDCM_NAME_SPACE::Global::GetTS()->GetValue(ts) << std::endl;
163
164           std::cout << "   list of the first " << MAX_NUMBER_OF_DIFFERENCE
165                     << " bytes differing (pos : original - written) :"
166                     << std::endl;
167
168           for(int i=0, j=0; i<dataSizeFixed && j<MAX_NUMBER_OF_DIFFERENCE; i++)
169           {
170              if (abs ((int)imageData[i]-(int)imageDataWritten[i]) > 2)
171              {
172                 if (j<MAX_NUMBER_OF_DIFFERENCE)
173                    std::cout << std::dec << "(" << i << " : "
174                      << std::hex
175                      << (int)(imageData[i]) << " - "
176                      << (int)(imageDataWritten[i]) << ") "
177                      << std::dec;
178                 ++j;
179               }
180           }
181           std::cout << std::endl;
182
183           file->Delete();
184           filehelper->Delete();
185           fileout->Delete();
186           reread->Delete();
187           nb_of_failure___++;
188   
189           if (nbDiff/2 > 8 )  // last pixel of (DermaColorLossLess.dcm) is diferent. ?!?
190                               // I don't want it to break the testsuite
191              return 1;
192           else
193              return 0;
194        }      
195        else
196        {
197           std::cout << std::endl << filename << " : some pixels"
198                     << "  ("
199                     << PixelType << " bAlloc:" << file->GetBitsAllocated() << " bStored:" << file->GetBitsStored()
200                     << ") differ +/-1 (as expanded in memory)."
201                     << std::endl
202                     << "        compression : "
203                     << GDCM_NAME_SPACE::Global::GetTS()->GetValue(ts) << std::endl;
204
205           std::cout << "   list of the first " << MAX_NUMBER_OF_DIFFERENCE
206                     << " bytes differing (pos : original - written) :"
207                     << std::endl;
208
209           for(int i=0, j=0; i<dataSizeFixed && j<MAX_NUMBER_OF_DIFFERENCE; i++)
210           {
211              if (imageData[i] != imageDataWritten[i])
212              {
213                 std::cout << std::hex << "(" << i << " : " 
214                          << std::hex << (int)(imageData[i]) << " - "
215                          << std::hex << (int)(imageDataWritten[i]) << ") "
216                          << std::dec;
217                 ++j;
218               }
219           }
220           std::cout << std::endl;
221           nb_of_diffPM1___++;
222        }
223    }
224    else
225    {
226       nb_of_success___ ++;
227    }
228    std::cout << "=============== 4...OK." << std::endl ;
229    //////////////// Clean up:
230    file->Delete();
231    filehelper->Delete();
232    fileout->Delete();
233    reread->Delete();
234
235    return 0;
236 }
237
238 // -------------------------------------------------------------------------------------------
239
240 int TestReadWriteReadCompare(int argc, char *argv[]) 
241 {
242    int result = 0;
243    nb_of_success___ = 0;
244    nb_of_failure___ = 0;
245    nb_of_diffPM1___ = 0;
246    
247    if (argc == 4)
248       GDCM_NAME_SPACE::Debug::DebugOn();
249
250    if (argc >= 3)
251    {
252       const std::string input  = argv[1];
253       const std::string output = argv[2];
254       result += CompareInternal(input, output);
255    }
256    else if( argc > 4 || argc == 2 )
257    {
258       std::cout << "Please read the manual" << std::endl;
259    }
260    else
261    {
262       std::cout<< "Test::TestReadWriteReadCompare: description " << std::endl;
263       std::cout << "   For all images in gdcmData (and not blacklisted in "
264                    "Test/CMakeLists.txt)" << std::endl;
265       std::cout << "   apply the following multistep test: " << std::endl;
266       std::cout << "   step 1: parse the image (as gdcmFile) and call"
267                 << " IsReadable(). " << std::endl;
268       std::cout << "   step 2: write the corresponding image in DICOM V3 "
269                 << "with explicit Value Representation " << std::endl
270                 << "            in temporary file "
271                 << "TestReadWriteReadCompare.dcm." << std::endl;
272       std::cout << "   step 3: read the image written on step2 and call "
273                 << " IsReadable(). " << std::endl;
274       std::cout << "   step 4: compare (in memory with memcmp) that the two "
275                 << "images " << std::endl
276                 << "           match (as expanded by gdcm)." << std::endl;
277    
278       int i = 0;
279       int res =0;
280       while( gdcmDataImages[i] != 0 )
281       {
282          std::string filename = GDCM_DATA_ROOT;
283          filename += "/";
284          filename += gdcmDataImages[i];
285          res = CompareInternal(filename, "TestReadWriteReadCompare.dcm");
286
287          if (res == 1)
288          {
289             std::cout << "=============================== Failure on: " << gdcmDataImages[i] << std::endl;
290             result ++;
291          }
292          i ++;
293       }
294    }
295    std::cout << "==================================" << std::endl;
296    std::cout << "nb of success  " << nb_of_success___ << std::endl;
297    std::cout << "nb of failure  " << nb_of_failure___ << std::endl;
298    std::cout << "nb of diff+/-1 " << nb_of_diffPM1___ << std::endl;   
299    return result;
300 }