L_DicomSetJ2KOptions

#include "ltdic.h"

L_LTDIC_API L_UINT16 L_DicomSetJ2KOptions(hDS, pOptions)

HDICOMDS hDS;	/* a DICOM handle */
const pFILEJ2KOPTIONS pOptions;	/* pointer to a structure */

Sets the JPEG 2000 compression options.

Parameter	Description
hDS	A DICOM handle.
pOptions	Pointer to a structure that contains the options to use when compressing the image(s) in a Pixel Data element using the JPEG 2000 compression.

Returns

0	SUCCESS
>0	An error occurred. Refer to Return Codes.

Comments

The nSize member of the FILEJ2KOPTIONS structure must be set before calling this function.

Required DLLs and Libraries

LTDIC

For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application

Platforms

Win32, x64

See Also

Functions:	L_DicomInsertImage, L_DicomInsertImageList, L_DicomSetImage, L_DicomSetImageList, L_DicomGetJ2KOptions, L_DicomGetDefaultJ2KOptions
Topics:	Working with Data Sets
	Implementing JPEG 2000 Plug in Features

Example

This example inserts an image in a Data Set Using the JPEG 2000 compression with a 100:1 compression ratio

L_INT DicomSetJ2KOptionsExample(HDICOMDS hDS, pBITMAPHANDLE pBitmap)
{
   L_UINT16 nRet;

   if(hDS && pBitmap)
   {
      pDICOMELEMENT pElement;
      FILEJ2KOPTIONS J2KOptions;
      
      // Get the current JPEG 2000 compression options. 
      nRet = L_DicomGetJ2KOptions(hDS, &J2KOptions, sizeof(FILEJ2KOPTIONS));
      if (nRet != DICOM_SUCCESS)
         return nRet;

      J2KOptions.uCompressionControl = J2K_COMPRESSION_RATIO;
      // set the compression ratio to 100
      J2KOptions.fCompressionRatio = 100.0f;
      // Update the JPEG 2000 compression options. 
      nRet = L_DicomSetJ2KOptions(hDS, &J2KOptions);
      if (nRet != DICOM_SUCCESS)
         return nRet;

      pElement = L_DicomFindFirstElement(hDS, NULL, TAG_PIXEL_DATA, FALSE);
      if (pElement != NULL)
      {
         nRet = L_DicomInsertImage(hDS,
            pElement,
            pBitmap,
            1,
            IMAGE_COMPRESSION_J2K_LOSSY,
            IMAGE_PHOTOMETRIC_MONOCHROME2,
            0,
            25,
            DICOM_SETIMAGE_AUTO_SET_VOI_LUT,
            NULL,
            NULL);
         if (nRet != DICOM_SUCCESS)
            return nRet;
      }
   }
   return DICOM_SUCCESS;
}