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L_Jp2AppendGMLDataMemory

Summary

Appends GML data to the specified JPEG 2000 part 2 (JPX) file format in memory.

Syntax

#include "l_bitmap.h"

L_LTJP2_API L_INT EXT_FUNCTION L_Jp2AppendGMLDataMemory(hJp2, pBuffer, uBufferSize, lpOutBuffer, puOutBufferSize, pGMLData)

Parameters

L_HJP2 hJp2

JPEG 2000 engine handle that was created by the L_Jp2Create function.

L_UINT8 * pBuffer

Pointer to a JPEG 2000 file in memory.

L_SIZE_T uBufferSize

Size of the JPEG 2000 file in bytes.

L_UINT8 ** lpOutBuffer

Pointer to a pointer to be updated with an array of bytes that contains a JPEG 2000 file with new appended GML data. You must free this buffer by calling the Windows GlobalFree() function.

L_SIZE_T * puOutBufferSize

Address of a variable to be updated with the size of the output memory buffer in bytes.

pL_JP2_GMLDATA pGMLData

Pointer to the L_JP2_GMLDATA structure that has the GML data to be appended.

Returns

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

Comments

L_Jp2AppendGMLDataMemory appends GML data to the specified JPEG 2000 part 2 (JPX) file format in memory. If the file is JPX format, the functions returns: ERROR_FILE_FORMAT.

Required DLLs and Libraries

LTJP2
LTIMGEFX
LFJ2K
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.

Example

This example appends user GML data to a JPEG 2000 file.

L_INT Jp2AppendGMLDataMemoryExample(L_UINT8* pFileBuffer, L_SIZE_T uFileSize, L_UINT8** lpOutBuffer, L_SIZE_T* puOutSize, pL_JP2_GMLDATA pGMLData) 
{ 
   L_HJP2 hEngine; 
   L_INT nRet; 
 
   // Create JPEG  2000 engine handle 
   hEngine = L_Jp2Create(); 
 
   // Read GML data 
   nRet = L_Jp2AppendGMLDataMemory(hEngine, pFileBuffer, uFileSize, lpOutBuffer, puOutSize, pGMLData); 
   if (nRet != SUCCESS) 
      return nRet; 
 
   // Destroy engine handle 
   nRet = L_Jp2Destroy(hEngine); 
   if (nRet != SUCCESS) 
      return nRet; 
 
   return SUCCESS; 
}