LJp2FileFormat::ReadGMLData

#include "ltwrappr.h"

L_INT LJp2FileFormat::ReadGMLData(pFileName, pGMLData)

L_TCHAR * pFileName;

JPEG 2000 file name

pL_JP2_GMLDATA pGMLData;

pointer to the L_JP2_GMLDATA structure

Reads GML data stored in a JPEG 2000 file.

Parameter

Description

pFileName

Character string that contains the name of the JPEG 2000 file.

pGMLData

Pointer to the L_JP2_GMLDATA structure that is filled by GML data stored in the file.

Returns

SUCCESS

The function was successful.

< 1

An error occurred. Refer to Return Codes.

Comments

LJp2FileFormat::ReadGMLData reads GML data stored in a JPEG 2000 file. You must free this structure by calling the LJp2FileFormat::FreeGMLData function.

Required DLLs and Libraries

LTJP2
LFJ2K
LTIMGEFX

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:

LJp2FileFormat::FreeGMLData, LJp2FileFormat::ReadGMLDataMemory, LJp2FileFormat::AppendGMLData, LJp2FileFormat::AppendGMLDataMemory

Topics:

Implementing JPEG 2000 Features

 

Raster Image Functions: Working with JPEG 2000

 

Programming with JPX Features

 

JPX File Comments

 

Raster Image Functions: Working with JPX

Example

This example reads GML data stored in JPEG 2000 file format

L_INT LJp2FileFormat__ReadGMLDataExample(L_VOID) 
{ 
   LJp2FileFormat Engine; 
   L_JP2_GMLDATA GMLData; 
   L_INT nRet = 0; 
 
   /*Read GML data*/ 
   GMLData.uStructSize = sizeof(L_JP2_GMLDATA); 
   nRet = Engine.ReadGMLData(MAKE_IMAGE_PATH(TEXT("image1.jpx")), &GMLData); 
   if(nRet != SUCCESS) 
      return nRet; 
 
   /*Free GML data*/ 
   nRet = Engine.FreeGMLData( &GMLData); 
   if(nRet != SUCCESS) 
      return nRet; 
 
   return SUCCESS; 
} 

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