LJp2FileFormat::ReadGMLDataMemory (original) (raw)
Summary
Reads GML data stored in a JPEG 2000 file in memory.
Syntax
#include "ltwrappr.h"
L_INT LJp2FileFormat::ReadGMLDataMemory(pBuffer, uBufferSize, pGMLData)
Parameters
L_UINT8 * pBuffer
Pointer to a JPEG 2000 file in memory.
L_SIZE_T uBufferSize
Size of the JPEG 2000 file in bytes.
pL_JP2_GMLDATA pGMLData
Pointer to the L_JP2_GMLDATA structure that is filled by GML data stored in the file.
Returns
| Value | Meaning |
|---|---|
| SUCCESS | The function was successful. |
| < 1 | An error occurred. Refer to Return Codes. |
Comments
LJp2FileFormat::ReadGMLDataMemory reads GML data stored in a JPEG 2000 file in memory. 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::ReadGMLData
- 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__ReadGMLDataMemoryExample(L_UINT8* pFileBuffer, L_SIZE_T uFileSize)
{
LJp2FileFormat Engine;
L_JP2_GMLDATA GMLData;
L_INT nRet = 0;
/*Read GML data*/
GMLData.uStructSize = sizeof(L_JP2_GMLDATA);
nRet = Engine.ReadGMLDataMemory( pFileBuffer, uFileSize, &GMLData);
if(nRet != SUCCESS)
return nRet;
/*Free GML data*/
nRet = Engine.FreeGMLData( &GMLData);
if(nRet != SUCCESS)
return nRet;
return SUCCESS;
}
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