gvsig-raster / org.gvsig.raster.cache / trunk / org.gvsig.raster.cache / org.gvsig.raster.cache.lib.impl / deprecated / buffer / test / rocache / TestSwapBands.java @ 1965
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package org.gvsig.raster.cache.buffer.impl.rocache; |
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import java.io.IOException; |
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import junit.framework.TestCase; |
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import org.gvsig.jgdal.GdalException; |
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import org.gvsig.raster.cache.buffer.Band; |
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import org.gvsig.raster.cache.buffer.Buffer; |
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import org.gvsig.raster.cache.buffer.BufferDataSource; |
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import org.gvsig.raster.cache.buffer.exception.OperationNotSupportedException; |
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import org.gvsig.raster.cache.buffer.exception.ProcessInterruptedException; |
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import org.gvsig.raster.cache.buffer.exception.WrongParameterException; |
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import org.gvsig.raster.cache.buffer.impl.io.BufferDataSourceImpl; |
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import org.gvsig.raster.cache.buffer.impl.io.GdalRead; |
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import org.gvsig.raster.cache.buffer.impl.memory.RasterMemoryBuffer; |
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/**
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* This test swap several bands of a raster compare the result with a memory buffer
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* swaped.
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* <P>
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* The array to test is {2, 0, 1}. That means the band 0 goes to the position two, the
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* band one goes to the position zero and the band two goes to the position one.
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* When the swap operation is executed, this test will check comparing the result
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* bands with the input bands
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* </P>
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* @author Nacho Brodin (nachobrodin@gmail.com)
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*/
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public class TestSwapBands extends TestCase { |
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private String rasterIn = "./src/test/resources/image/001m09_1_0.tif"; |
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public void start() { |
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this.setUp();
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this.testStack();
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} |
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public void setUp() { |
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System.err.println("ROCache TestSwapBands running..."); |
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} |
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public void testStack() { |
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long t1 = System.currentTimeMillis(); |
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GdalRead input1 = null;
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try {
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//Read input data
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input1 = new GdalRead(rasterIn);
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Object dataIn1 = input1.readBlock(0, 0, input1.getWidth(), input1.getHeight()); |
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//Create Buffer
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Buffer buf2 = new RasterMemoryBuffer(input1.getRasterBufTypeFromGdalType(input1.getDataType()), |
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input1.getWidth(), |
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input1.getHeight(), |
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input1.getBandCount(), |
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true);
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//Set data to buffer
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setLines(dataIn1, buf2); |
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BufferDataSource ds = null;
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try {
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ds = new BufferDataSourceImpl(rasterIn);
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} catch (IOException e) { |
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e.printStackTrace(); |
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} |
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RasterReadOnlyBuffer buf1 = new RasterReadOnlyBuffer(ds);
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try {
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buf2.swapBands(new int[]{2, 0, 1}); |
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buf1.swapBands(new int[]{2, 0, 1}); |
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} catch (WrongParameterException e) {
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e.printStackTrace(); |
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} |
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//Write output file
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Band band1 = buf1.getBand(0);
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Band band2 = buf2.getBand(0);
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compareBands(band1, band2); |
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band1 = buf1.getBand(1);
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band2 = buf2.getBand(1);
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compareBands(band1, band2); |
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band1 = buf1.getBand(2);
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band2 = buf2.getBand(2);
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compareBands(band1, band2); |
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buf1.free(); |
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buf2.free(); |
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} catch (GdalException e) {
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e.printStackTrace(); |
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} catch (IOException e) { |
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e.printStackTrace(); |
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} catch (ProcessInterruptedException e) {
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e.printStackTrace(); |
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} catch (OperationNotSupportedException e) { |
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e.printStackTrace(); |
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} |
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long t2 = System.currentTimeMillis(); |
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System.out.println("Tiempo ROCache TestSwapBands: " + (t2 - t1) + " milisegundos"); |
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} |
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public void compareBands(Band band1, Band band2) { |
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for (int i = 0; i < band1.getHeight(); i++) { |
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for (int j = 0; j < band1.getWidth(); j++) { |
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byte b1 = band1.getElemByte(i, j);
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byte b2 = band2.getElemByte(i, j);
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if(b1 != b2)
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System.out.println(i + " " + j); |
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assertEquals(b1, b2); |
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} |
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} |
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} |
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private void setLines(Object dataIn, Buffer buf) throws OperationNotSupportedException { |
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if(dataIn instanceof byte[][][]) { |
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byte[][][] d = (byte[][][])dataIn; |
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for (int iBand = 0; iBand < d.length; iBand++) { |
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for (int row = 0; row < d[iBand].length; row++) { |
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buf.setLineInBandByte(d[iBand][row], row, iBand); |
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} |
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} |
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} |
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} |
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} |