gvsig-raster / org.gvsig.raster.cache / trunk / org.gvsig.raster.cache / org.gvsig.raster.cache.lib.impl / src / test / java / org / gvsig / raster / cache / buffer / impl / stripecache / horizontal / TestSwapBands.java @ 991
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package org.gvsig.raster.cache.buffer.impl.stripecache.horizontal; |
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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.exception.OperationNotSupportedException; |
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import org.gvsig.raster.cache.buffer.exception.WrongParameterException; |
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import org.gvsig.raster.cache.buffer.impl.BufferCacheManagerImpl; |
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import org.gvsig.raster.cache.buffer.impl.io.GdalRead; |
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import org.gvsig.raster.cache.buffer.impl.io.GdalWrite; |
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/**
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* This test swap several bands of a raster and save the result in other file.
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* Finally it compares the output bands with the input bands.
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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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private String rasterOut = "/tmp/out-swaped.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("StripeCache 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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GdalWrite out = null;
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try {
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//Reducimos el tama?o de la cache para una prueba con menos datos
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BufferCacheManagerImpl.cacheSize = 2;
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BufferCacheManagerImpl.pageSize = 0.2;
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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 buf1 = new RasterCacheBuffer(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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//Set data to buffer
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setBytes(dataIn1, buf1); |
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Buffer buf2 = new RasterCacheBuffer(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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//Set data to buffer
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setBytes(dataIn1, buf2); |
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try {
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buf2.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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out = new GdalWrite(rasterOut, input1.getBandCount(), input1.getDataType(), input1.getWidth(), input1.getHeight(), GdalWrite.COLOR_INTERP_RGB);
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out.writeBands(buf2.getBands()); |
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out.close(); |
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Band band1 = buf1.getBand(0);
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Band band2 = buf2.getBand(1);
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compareBands(band1, band2); |
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band1 = buf1.getBand(1);
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band2 = buf2.getBand(2);
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compareBands(band1, band2); |
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band1 = buf1.getBand(2);
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band2 = buf2.getBand(0);
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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 (InterruptedException 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 StripeCache 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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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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private void setBytes(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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for (int col = 0; col < d[iBand][0].length; col++) { |
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buf.setElem(row, col, iBand, d[iBand][row][col]); |
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} |
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} |
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} |
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} |
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} |
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} |