L_Jp2ReadGMLData (original) (raw)

Summary

Reads GML data stored in a JPEG 2000 file.

Syntax

#include "l_bitmap.h"

L_LTJP2_API L_INT EXT_FUNCTION L_Jp2ReadGMLData(hJp2, pFileName, pGMLData)

Parameters

L_HJP2 hJp2

JPEG 2000 engine handle.

L_TCHAR * pFileName

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

pL_JP2_GMLDATA pGMLData

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

Returns

Comments

L_Jp2ReadGMLData reads GML data stored in a JPEG 2000 file. You must free this structure by calling the L_Jp2FreeGMLData function.

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.

See Also

Functions

• L_Jp2FreeGMLData
• L_Jp2ReadGMLDataMemory
• L_Jp2AppendGMLData
• L_Jp2AppendGMLDataMemory

Topics

• Programming with JPEG 2000 Features
• Programming with JPX Features
• Raster Image Functions: Working with JPEG 2000
• Raster Image Functions: Working with JPX

Example

This example reads GML data stored in JPEG 2000 file format

L_INT Jp2ReadGMLDataExample(L_VOID) { L_HJP2 hEngine; L_JP2_GMLDATA GMLData; L_INT nRet; // Create JPEG 2000 engine handle hEngine = L_Jp2Create(); // Read GML data GMLData.uStructSize = sizeof(L_JP2_GMLDATA); nRet = L_Jp2ReadGMLData(hEngine, MAKE_IMAGE_PATH("image1.jpx"), &GMLData); if (nRet != SUCCESS) return nRet; // Free GML data nRet = L_Jp2FreeGMLData(hEngine, &GMLData); if (nRet != SUCCESS) return nRet; // Destroy engine handle nRet = L_Jp2Destroy(hEngine); if (nRet != SUCCESS) return nRet; return SUCCESS; }

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