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L_PdfCompInsertMRC

Summary

(Document Required) Segments the specified image using MRC segmentation, compresses it, and inserts the image in the PDF file in memory.

Syntax

#include "l_bitmap.h"
#include "lpdfComp.h"

L_LCMRC_API L_INT L_PdfCompInsertMRC(hDocHandle, pBitmap, pPDFOptions)

Parameters

LCPDF_HANDLE hDocHandle

Handle to an existing PDF document. This handle is obtained by calling the L_PdfCompInit function.

pBITMAPHANDLE pBitmap

Pointer to the bitmap handle that references the image to be inserted in the PDF file.

LPPDFCOMPOPTIONS pPDFOptions

Pointer to the PDFCOMPOPTIONS structure that contains options used to write the image to the PDF file in memory.

Returns

Value	Meaning
SUCCESS	The function was successful.
< 1	An error occurred. Refer to Return Codes.

Comments

To insert the bitmap without using MRC segmentation, use L_PdfCompInsertNormal.

This function calls the pPDFCOMP_IMAGECALLBACK to allow the user to accept or reject the addition of any segment to the PDF document.

Required DLLs and Libraries

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

Example

This example inserts an image to pdf document and uses the MRC to make a proper segment for this image ,
in this sample we don't need to add Back ground segment.

L_INT PdfCompImageCallBack(LCPDF_HANDLE   hDocument, 
                           L_INT          nPage, 
                           LPSEGMENTINFO  pSegment, 
                           L_VOID*        pUserData) 
{ 
   UNREFERENCED_PARAMETER(hDocument); 
   UNREFERENCED_PARAMETER(nPage); 
   UNREFERENCED_PARAMETER(pUserData); 
   if(pSegment->uSegmentType == SEGMENT_BACKGROUND) 
      return FAILURE; 
   else 
      return SUCCESS; 
} 
 
L_INT PdfCompInsertMRCExample(L_VOID) 
{ 
   L_INT          nRet; 
   BITMAPHANDLE   hBitmap; 
   LCPDF_HANDLE   hDocument; 
   PDFCOMPOPTIONS PDFOptions; 
   PDFCOMPRESSION pdfComp; 
 
   nRet = L_LoadBitmap (MAKE_IMAGE_PATH(TEXT("Image1.CMP")), &hBitmap, sizeof(BITMAPHANDLE), 0, ORDER_RGB, NULL, NULL);  
   if(nRet != SUCCESS) 
   { 
      return nRet; 
   } 
 
   nRet = L_PdfCompInit (&hDocument, (pPDFCOMP_IMAGECALLBACK)PdfCompImageCallBack, NULL); 
   if(nRet != SUCCESS) 
   { 
      return nRet; 
   } 
 
   pdfComp.uStructSize = sizeof( pdfComp ); 
   pdfComp.dwFlags     = PDFCOMP_1BITCOMPTYPE_ENABLED    | 
                         PDFCOMP_2BITCOMPTYPE_ENABLED    | 
                         PDFCOMP_PICTURECOMPTYPE_ENABLED ; 
   pdfComp.comp1Bit    = PDFCOMP_1BITCOMPTYPE_JBIG2; 
   pdfComp.comp2Bit    = PDFCOMP_2BITCOMPTYPE_ZIP; 
   pdfComp.compPicture = PDFCOMP_PICTURECOMPTYPE_JPEG; 
   pdfComp.nQFactor    = 50; 
 
  nRet = L_PdfCompSetCompression( hDocument, &pdfComp ); 
  if(nRet != SUCCESS) 
   { 
      L_PdfCompFree (hDocument); 
      return nRet; 
   } 
 
   PDFOptions.uStructSize      = sizeof(PDFCOMPOPTIONS); 
   PDFOptions. dwFlags        = PDFCOMP_FAVOR_ONEBIT     | 
                                PDFCOMP_WITH_BACKGROUND  ; 
   PDFOptions.imageQuality    = PDFCOMP_IMAGEQUALITY_USER; 
   PDFOptions.outputQuality   = PDFCOMP_OUTPUTQUALITY_USER; 
 
   PDFOptions.uCleanSize            = 7; 
   PDFOptions.uBackGroundThreshold  = 15; 
   PDFOptions.uCombineThreshold     = 100; 
   PDFOptions.uSegmentQuality       = 50; 
   PDFOptions.uColorThreshold       = 25; 
 
   nRet = L_PdfCompInsertMRC(hDocument, &hBitmap, &PDFOptions); 
   if(nRet != SUCCESS) 
   { 
      L_PdfCompFree (hDocument); 
      return nRet; 
   } 
 
   nRet = L_PdfCompWrite(hDocument, MAKE_IMAGE_PATH(TEXT("Output.pdf"))); 
 
   L_PdfCompFree (hDocument); 
   return nRet; 
}