LDicomDS::SetPaletteColorLUTData

//#define SET_SIZE(PSTRUCTPTR) (PSTRUCTPTR)->uStructSize = sizeof(*PSTRUCTPTR) 
 
L_INT LDicomDS_SetPaletteColorLUTDataExample(LDicomDS &InDS)  
{ 
   L_INT                      nRet; 
   L_INT                      nLUTIndex; 
   L_UINT16               *   pRedLUTData               = NULL;  
   L_UINT16               *   pGreenLUTData             = NULL;  
   L_UINT16               *   pBlueLUTData              = NULL;  
   DICOMPALCOLORLUTATTRIBS    PaletteColorLUTAttributes  = {0} ;  
 
   // Remember  to set the size for each structure 
   PaletteColorLUTAttributes.uStructSize                    = sizeof(DICOMPALCOLORLUTATTRIBS); 
   PaletteColorLUTAttributes.RedLUTDescriptor.uStructSize   = sizeof(DICOMLUTDESCRIPTOR); 
   PaletteColorLUTAttributes.GreenLUTDescriptor.uStructSize = sizeof(DICOMLUTDESCRIPTOR); 
   PaletteColorLUTAttributes.BlueLUTDescriptor.uStructSize  = sizeof(DICOMLUTDESCRIPTOR); 
 
   // Initialize Red Palette Color Lookup Table Descriptor (0028,1101)  
   PaletteColorLUTAttributes.RedLUTDescriptor.nFirstStoredPixelValueMapped    = 0;  
   PaletteColorLUTAttributes.RedLUTDescriptor.uEntryBits                      = 16;  
   PaletteColorLUTAttributes.RedLUTDescriptor.uNumberOfEntries                = 0x10000;  
 
   // Initialize Green Palette Color Lookup Table Descriptor (0028,1102)  
   PaletteColorLUTAttributes.GreenLUTDescriptor.nFirstStoredPixelValueMapped  = 0;  
   PaletteColorLUTAttributes.GreenLUTDescriptor.uEntryBits                    = 16;  
   PaletteColorLUTAttributes.GreenLUTDescriptor.uNumberOfEntries              = 0x10000;  
 
   // Initialize Blue Palette Color Lookup Table Descriptor (0028,1103)  
   PaletteColorLUTAttributes.BlueLUTDescriptor.nFirstStoredPixelValueMapped   = 0;  
   PaletteColorLUTAttributes.BlueLUTDescriptor.uEntryBits                     = 16;  
   PaletteColorLUTAttributes.BlueLUTDescriptor.uNumberOfEntries               = 0x10000;  
 
   // Allocate a buffer to hold Red Palette Color Lookup Table Data 
   pRedLUTData = (L_UINT16*)malloc(0x10000 * sizeof(L_UINT16));  
   if(!pRedLUTData)  
   { 
      return DICOM_ERROR_MEMORY;    
   } 
 
   // Allocate a buffer to hold Green Palette Color Lookup Table Data 
   pGreenLUTData = (L_UINT16*)malloc(0x10000 * sizeof(L_UINT16));  
   if(!pGreenLUTData)  
   { 
      free(pRedLUTData);  
      return DICOM_ERROR_MEMORY;    
   } 
 
   // Allocate a buffer to hold Blue Palette Color Lookup Table Data 
   pBlueLUTData = (L_UINT16*)malloc(0x10000 * sizeof(L_UINT16));  
   if(!pBlueLUTData)  
   { 
      free(pRedLUTData);  
      free(pGreenLUTData);  
      return DICOM_ERROR_MEMORY;    
   } 
 
   for(nLUTIndex = 0; nLUTIndex <= 0xFFFF; nLUTIndex++) 
   { 
      pRedLUTData    [nLUTIndex] = (L_UINT16) nLUTIndex  ; 
      pGreenLUTData  [nLUTIndex] = (L_UINT16) nLUTIndex/2; 
      pBlueLUTData   [nLUTIndex] = (L_UINT16) nLUTIndex/4; 
   } 
 
   // Delete all the elements that describe the "Palette Color Lookup Table". 
   nRet = InDS.DeletePaletteColorLUT (0);  
   if(nRet != DICOM_SUCCESS)  
   { 
      free(pRedLUTData);  
      free(pGreenLUTData);  
      free(pBlueLUTData);  
      return nRet;    
   } 
 
   // Set the new "Palette Color Lookup Table" attributes 
   nRet = InDS.SetPaletteColorLUTAttributes (&PaletteColorLUTAttributes, 0);  
   if(nRet != DICOM_SUCCESS)  
   { 
      free(pRedLUTData);  
      free(pGreenLUTData);  
      free(pBlueLUTData);  
      return nRet;    
   } 
 
   // Set Red Palette Color Lookup Table Data 
   nRet = InDS.SetPaletteColorLUTData (pRedLUTData,0x10000,DICOMPALETTECOLORLUTTYPE_RED,0);  
   if(nRet != DICOM_SUCCESS)  
   { 
      free(pRedLUTData);  
      free(pGreenLUTData);  
      free(pBlueLUTData);  
      return nRet;    
   } 
 
   // Set Green Palette Color Lookup Table Data 
   nRet = InDS.SetPaletteColorLUTData (pGreenLUTData,0x10000,DICOMPALETTECOLORLUTTYPE_GREEN,0);  
   if(nRet != DICOM_SUCCESS)  
   { 
      free(pRedLUTData);  
      free(pGreenLUTData);  
      free(pBlueLUTData);  
      return nRet;    
   } 
 
   // Set Blue Palette Color Lookup Table Data 
   nRet = InDS.SetPaletteColorLUTData (pBlueLUTData,0x10000,DICOMPALETTECOLORLUTTYPE_BLUE,0);  
   if(nRet != DICOM_SUCCESS)  
   { 
      free(pRedLUTData);  
      free(pGreenLUTData);  
      free(pBlueLUTData);  
      return nRet;    
   } 
 
   free(pRedLUTData);  
   free(pGreenLUTData);  
   free(pBlueLUTData);  
 
   return DICOM_SUCCESS;  
}