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/******************************************************************************
* $Id: GDALTestIO.java 25018 2012-09-30 13:15:35Z rouault $
*
* Name: GDALTestIO.java
* Project: GDAL Java Interface
* Purpose: A sample app to test ReadRaster_Direct / WriteRaster_Direct
* Author: Even Rouault, <even dot rouault at mines dash paris dot org>
*
* Adapted from a sample by Ivan Lucena
*
******************************************************************************
* Copyright (c) 2009, Even Rouault
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*****************************************************************************/
import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import java.nio.FloatBuffer;
import org.gdal.gdal.gdal;
import org.gdal.gdal.Band;
import org.gdal.gdal.Dataset;
import org.gdal.gdal.Driver;
import org.gdal.gdalconst.gdalconst;
public class GDALTestIO implements Runnable
{
String filename;
int nbIters;
static final int METHOD_DBB = 1;
static final int METHOD_JAVA_ARRAYS = 2;
static int method;
static volatile boolean bWait = true;
static volatile int nReady = 0;
static Object waiter = new Object();
static Object notifier = new Object();
public GDALTestIO(String filename, int nbIters)
{
this.filename = filename;
this.nbIters = nbIters;
}
public void run()
{
Dataset dataset = null;
Driver driver = null;
Band band = null;
int xsize = 4000;
int ysize = 400;
synchronized(notifier)
{
nReady ++;
notifier.notify();
}
synchronized(waiter)
{
while( bWait )
{
try
{
waiter.wait();
}
catch(InterruptedException ie)
{
}
}
}
driver = gdal.GetDriverByName("GTiff");
ByteBuffer byteBuffer = ByteBuffer.allocateDirect(4 * xsize);
byteBuffer.order(ByteOrder.nativeOrder());
FloatBuffer floatBuffer = byteBuffer.asFloatBuffer();
int[] intArray = new int[xsize];
float[] floatArray = new float[xsize];
dataset = driver.Create(filename, xsize, ysize, 1, gdalconst.GDT_Float32);
band = dataset.GetRasterBand(1);
for(int iter = 0; iter < nbIters; iter++)
{
if (method == METHOD_DBB)
{
for( int i = 0; i < ysize; i++) {
for( int j = 0; j < xsize; j++) {
floatBuffer.put(j, (float) (i + j));
}
band.WriteRaster_Direct(0, i, xsize, 1, gdalconst.GDT_Float32, byteBuffer);
}
}
else
{
for( int i = 0; i < ysize; i++) {
for( int j = 0; j < xsize; j++) {
floatArray[j] = (float) (i + j);
}
band.WriteRaster(0, i, xsize, 1, floatArray);
}
}
}
dataset.delete();
/* Open the file to check the values */
dataset = gdal.Open(filename);
band = dataset.GetRasterBand(1);
for(int iter = 0; iter < nbIters; iter++)
{
if (method == METHOD_DBB)
{
for( int i = 0; i < ysize; i++) {
band.ReadRaster_Direct(0, i, xsize, 1, xsize, 1, gdalconst.GDT_Int32, byteBuffer);
for( int j = 0; j < xsize; j++) {
int val = byteBuffer.getInt(j*4);
if (val != (i + j))
throw new RuntimeException("Bad value for (" + j + "," + i + ") : " + val);
}
}
}
else
{
for( int i = 0; i < ysize; i++) {
band.ReadRaster(0, i, xsize, 1, intArray);
for( int j = 0; j < xsize; j++) {
int val = intArray[j];
if (val != (i + j))
throw new RuntimeException("Bad value for (" + j + "," + i + ") : " + val);
}
}
}
}
dataset.delete();
/* Free the memory occupied by the /vsimem file */
gdal.Unlink(filename);
}
public static void main(String[] args) throws InterruptedException
{
gdal.AllRegister();
int nbIters = 50;
method = METHOD_JAVA_ARRAYS;
if (args.length >= 1 && args[0].equalsIgnoreCase("-dbb"))
method = METHOD_DBB;
Thread t1 = new Thread(new GDALTestIO("/vsimem/test1.tif", nbIters));
Thread t2 = new Thread(new GDALTestIO("/vsimem/test2.tif", nbIters));
t1.start();
t2.start();
synchronized(notifier)
{
while( nReady != 2 )
{
try
{
notifier.wait();
}
catch(InterruptedException ie)
{
}
}
}
synchronized(waiter)
{
bWait = false;
waiter.notifyAll();
}
t1.join();
t2.join();
System.out.println("Success !");
}
}
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