/*=========================================================================

  Program:   FusionViewer
  Module:    $RCSfile: NativeBuffer.cpp,v $
  Language:  C++
  Date:      $Date: 2006/08/10 17:38:46 $
  Version:   $Revision: 1.1.1.1 $
  
  Copyright (c) Insightful Corporation.  All rights reserved.
  See Copyright.txt for details.
  
  This software is distributed WITHOUT ANY WARRANTY; without even
  the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
  PURPOSE.  See the above copyright notice for more information.

=========================================================================*/

#include "stdafx.h"
#include "org_fusionviewer_io_NativeBuffer.h"

#define POINTER_NATIVE(func) Java_org_fusionviewer_io_NativeBuffer_##func


// \class NativeBuffer
// \brief Java NativeBuffer.allocate
//

JNIEXPORT jboolean JNICALL POINTER_NATIVE(allocate)
	(JNIEnv *env, jobject obj, jlong size)
{
	unsigned char *ptr = new unsigned char[size];
	if (ptr == NULL)
		return 0;
	
	jclass cls = env->GetObjectClass(obj);
	if (cls)
	{
		jfieldID fld = env->GetFieldID(cls, "m_nativePointer", "J");
		if (fld)
		{
			env->SetLongField(obj, fld, reinterpret_cast<jlong>(ptr));
		}
		else
		{
			delete[] ptr;
			return 0;
		}
	}
	else
	{
		delete[] ptr;
		return 0;
	}
	
	return 1;
}


//		Java NativeBuffer.dispose

JNIEXPORT void JNICALL POINTER_NATIVE(dispose)
  (JNIEnv *env, jobject obj)
{
	jclass cls = env->GetObjectClass(obj);
	if (cls)
	{
		jfieldID fld = env->GetFieldID(cls, "m_nativePointer", "J");
		if (fld) {
			unsigned char *ptr = reinterpret_cast<unsigned char *>(env->GetLongField(obj, fld));
			if (ptr)
				delete[] ptr;
		}
	}
}