Application: gvSIG desktop

/* gvSIG. Desktop Geographic Information System.

 *

 * Copyright ? 2007-2017 gvSIG Association

 *

 * This program is free software; you can redistribute it and/or

 * modify it under the terms of the GNU General Public License

 * as published by the Free Software Foundation; either version 2

 * of the License, or (at your option) any later version.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,

 * MA  02110-1301, USA.

 *

 * For any additional information, do not hesitate to contact us

 * at info AT gvsig.com, or visit our website www.gvsig.com.

 */

package org.gvsig.raster.lib.legend.impl.operations.colortable;

import java.util.ArrayList;

import java.util.List;

import org.gvsig.fmap.geom.exception.CreateEnvelopeException;

import org.gvsig.raster.lib.buffer.api.Band;

import org.gvsig.raster.lib.buffer.api.BufferLocator;

import org.gvsig.raster.lib.buffer.api.BufferManager;

import org.gvsig.raster.lib.buffer.api.NoData;

import org.gvsig.raster.lib.buffer.api.exceptions.BufferException;

import org.gvsig.raster.lib.buffer.api.exceptions.BufferOperationException;

import org.gvsig.raster.lib.buffer.api.operations.OperationFactory;

import org.gvsig.raster.lib.buffer.spi.exceptions.ProcessingOperationException;

import org.gvsig.raster.lib.legend.api.RasterLegendLocator;

import org.gvsig.raster.lib.legend.api.RasterLegendManager;

import org.gvsig.raster.lib.legend.api.colorinterpretation.ColorInterpretation;

import org.gvsig.raster.lib.legend.spi.AbstractColoredOperation;

import org.gvsig.tools.locator.LocatorException;

/**

 * @author fdiaz

 *

 */

public class ColorTableOperation extends AbstractColoredOperation {

    private RowProcessor rowProcessor;

    /**

     * @param factory

     *

     */

    public ColorTableOperation(OperationFactory factory) {

        super(factory);

    }

    @Override

    public void preProcess() throws BufferOperationException {

        super.preProcess();

        BufferManager manager = BufferLocator.getBufferManager();

        RasterLegendManager legendManager = RasterLegendLocator.getRasterLegendManager();

        try {

            if (!getInputColorInterpretation().isPalette()) {

                throw new UnsupportedOperationException("The color interpretation of input buffer isn't Palette");

            }

            int bandType = this.getInputBuffer().getBand(getInputColorInterpretation().getPaletteBand()).getDataType();

            switch (bandType) {

            case BufferManager.TYPE_BYTE:

                rowProcessor = new ByteRowProcessor();

                break;

            case BufferManager.TYPE_USHORT:

                rowProcessor = new UShortRowProcessor();

                break;

            case BufferManager.TYPE_SHORT:

                rowProcessor = new ShortRowProcessor();

                break;

            case BufferManager.TYPE_INT:

                rowProcessor = new IntRowProcessor();

                break;

            case BufferManager.TYPE_FLOAT:

                rowProcessor = new FloatRowProcessor();

                break;

            case BufferManager.TYPE_DOUBLE:

                rowProcessor = new DoubleRowProcessor();

                break;

            default:

                throw new IllegalArgumentException("Unknow type of band '"+getInputColorInterpretation().getPaletteBand()+"'");

            }

            int sourceBands = this.getInputBuffer().getBandCount();

            NoData[] sourceNoDatas = this.getInputBuffer().getBandNoData();

//            int[] sourceTypes = this.getInputBuffer().getBandTypes();

            List<String> colorInterpretations = new ArrayList<>();

            List<NoData> noDatas = new ArrayList<>();

            List<Integer> types = new ArrayList<>();

            colorInterpretations.add(ColorInterpretation.RED_BAND);

            colorInterpretations.add(ColorInterpretation.GREEN_BAND);

            colorInterpretations.add(ColorInterpretation.BLUE_BAND);

            colorInterpretations.add(ColorInterpretation.ALPHA_BAND);

            types.add(BufferManager.TYPE_BYTE);

            types.add(BufferManager.TYPE_BYTE);

            types.add(BufferManager.TYPE_BYTE);

            types.add(BufferManager.TYPE_BYTE);

            noDatas.add(null);

            noDatas.add(null);

            noDatas.add(null);

            noDatas.add(null);

//            if (getInputColorInterpretation().hasAlphaBand()) {

//                int alphaBand = getInputColorInterpretation().getAlphaBand();

//                if(sourceTypes[alphaBand]!=BufferManager.TYPE_BYTE){

//                    throw new UnsupportedOperationException("The type of ALPHA band isn't BYTE");

//                }

//                colorInterpretations.add(ColorInterpretation.ALPHA_BAND);

//                types.add(sourceTypes[alphaBand]);

//                noDatas.add(sourceNoDatas[alphaBand]);

//            }

            if (mustCopyUnprocessedBands()) {

                for (int band = 0; band < sourceBands; band++) {

                    if (!isProcessableBand(band)) {

                        colorInterpretations.add(ColorInterpretation.UNDEFINED_BAND);

                        noDatas.add(sourceNoDatas[band]);

                        types.add(this.getInputBuffer().getBandTypes()[band]);

                    }

                }

            }

            setOutputColorInterpretation(

                legendManager.createColorInterpretation(colorInterpretations));

            this.setParameter(OUTPUT_COLOR_INTERPRETATION_PARAM, getOutputColorInterpretation());

            this.setOutputBuffer(

                manager.createBuffer(

                        this.getInputBuffer().getRows(), 

                        this.getInputBuffer().getColumns(), 

                        this.getTypesAsArray(types),

                        this.getNoDatasAsArray(noDatas), 

                        this.getInputBuffer().getProjection(), 

                        this.getInputBuffer().getEnvelope()));

        } catch (LocatorException | BufferException | CreateEnvelopeException e) {

            throw new ProcessingOperationException(e);

        }

    }

    @Override

    public void process() throws ProcessingOperationException {

        super.process();

        try {

            // List<Integer> bandsToProcess = new ArrayList<Integer>();

            if (mustCopyUnprocessedBands()) {

                int bands = this.getInputBuffer().getBandCount();

                int outBand = 4; //getInputColorInterpretation().hasAlphaBand() ? 4 : 3;

                for (int band = 0; band < bands; band++) {

                    if (!isProcessableBand(band)) {

                        getOutputBuffer().getBand(outBand).copyFrom(this.getInputBuffer().getBand(band));

                        outBand++;

                    }

                }

            }

            for (int row = 0; row < this.getInputBuffer().getRows(); row++) {

                Band bufferPaletteBand = getInputBuffer().getBand(getInputColorInterpretation().getPaletteBand());

                Object rowBandBuffer = bufferPaletteBand.createRowBuffer();

                bufferPaletteBand.fetchRow(row, rowBandBuffer);

                List<Object> outputRowBuffers = new ArrayList<>();

                for (int band = 0; band < 4; band++) {

                    Band outputBufferBand = getOutputBuffer().getBand(band);

                    Object outputRowBuffer = outputBufferBand.createRowBuffer();

                    outputRowBuffers.add(outputRowBuffer);

                }

                rowProcessor.processRow(rowBandBuffer, outputRowBuffers);

                for (int band = 0; band < 4; band++) {

                    Band outputBufferBand = getOutputBuffer().getBand(band);

                    outputBufferBand.putRow(row, outputRowBuffers.get(band));

                }

            }

        } catch (Exception e) {

            throw new ProcessingOperationException(e);

        }

    }

    @Override

    public void postProcess() throws BufferOperationException {

        super.postProcess();

    }

    /**

     * @param band

     * @return

     */

    @Override

    protected boolean isProcessableBand(int band) {

        return isPaletteBand(band);

    }

    private boolean isPaletteBand(int band) {

        return (getInputColorInterpretation().getPaletteBand() == band);

    }

    interface RowProcessor {

        void processRow(Object inputRow, List outputRows);

        byte[] processValue(Object value);

    };

    private abstract class AbstractRowProcessor implements RowProcessor {

        NoData noData;

        public AbstractRowProcessor() {

            noData = getInputBuffer().getBand(getInputColorInterpretation().getPaletteBand()).getNoData();

        }

    }

    private class ByteRowProcessor extends AbstractRowProcessor {

        public ByteRowProcessor() {

            super();

        }

        @Override

        public void processRow(Object inputRow, List outputRows) {

            byte[] inputByteRow = (byte[])inputRow;

            for (int i = 0; i < inputByteRow.length; i++) {

                byte[] rgb = processValue(inputByteRow[i]);

                for (int band = 0; band < outputRows.size(); band++) {

                    ((byte[])(outputRows.get(band)))[i] = rgb[band];

                }

            }

        }

        @Override

        public byte[] processValue(Object value) {

            if (noData.isDefined()) {

                if (noData.getValue().equals(value)) {

                    byte result[] = { 0, 0, 0, 0 };

                    return result;

                }

            }

            return getInputColorInterpretation().getPalette().getRGBA(0xFF & (byte)value);

        }

    }

    private class ShortRowProcessor extends AbstractRowProcessor {

        public ShortRowProcessor() {

            super();

        }

        @Override

        public void processRow(Object inputRow, List outputRows) {

            short[] inputByteRow = (short[])inputRow;

            for (int i = 0; i < inputByteRow.length; i++) {

                byte[] rgb = processValue(inputByteRow[i]);

                for (int band = 0; band < outputRows.size(); band++) {

                    ((byte[])(outputRows.get(band)))[i] = rgb[band];

                }

            }

        }

        @Override

        public byte[] processValue(Object value) {

            if(noData.isDefined() && noData.getValue().equals(value)){

                byte result[] = {0,0,0,0};

                return result;

            }

            return getInputColorInterpretation().getPalette().getRGBA(value);

        }

    }

    private class UShortRowProcessor extends AbstractRowProcessor {

        public UShortRowProcessor() {

            super();

        }

        @Override

        public void processRow(Object inputRow, List outputRows) {

            short[] inputByteRow = (short[])inputRow;

            for (int i = 0; i < inputByteRow.length; i++) {

                byte[] rgb = processValue(inputByteRow[i]);

                for (int band = 0; band < outputRows.size(); band++) {

                    ((byte[])(outputRows.get(band)))[i] = rgb[band];

                }

            }

        }

        @Override

        public byte[] processValue(Object value) {

            if(noData.isDefined() && noData.getValue().equals(value)){

                byte result[] = {0,0,0,0};

                return result;

            }

            return getInputColorInterpretation().getPalette().getRGBA(0xFFFF & (byte)value);

        }

    }

    private class IntRowProcessor extends AbstractRowProcessor {

        public IntRowProcessor() {

            super();

        }

        @Override

        public void processRow(Object inputRow, List outputRows) {

            int[] inputByteRow = (int[])inputRow;

            for (int i = 0; i < inputByteRow.length; i++) {

                byte[] rgb = processValue(inputByteRow[i]);

                for (int band = 0; band < outputRows.size(); band++) {

                    ((byte[])(outputRows.get(band)))[i] = rgb[band];

                }

            }

        }

        @Override

        public byte[] processValue(Object value) {

            if(noData.isDefined() && noData.getValue().equals(value)){

                byte result[] = {0,0,0,0};

                return result;

            }

            return getInputColorInterpretation().getPalette().getRGBA(value);

        }

    }

    private class FloatRowProcessor extends AbstractRowProcessor {

        public FloatRowProcessor() {

            super();

        }

        @Override

        public void processRow(Object inputRow, List outputRows) {

            float[] inputByteRow = (float[])inputRow;

            for (int i = 0; i < inputByteRow.length; i++) {

                byte[] rgb = processValue(inputByteRow[i]);

                for (int band = 0; band < outputRows.size(); band++) {

                    ((byte[])(outputRows.get(band)))[i] = rgb[band];

                }

            }

        }

        @Override

        public byte[] processValue(Object value) {

            if(noData.isDefined() && noData.getValue().equals(value)){

                byte result[] = {0,0,0,0};

                return result;

            }

            return getInputColorInterpretation().getPalette().getRGBA(value);

        }

    }

    private class DoubleRowProcessor extends AbstractRowProcessor {

        public DoubleRowProcessor() {

            super();

        }

        @Override

        public void processRow(Object inputRow, List outputRows) {

            double[] inputByteRow = (double[])inputRow;

            for (int i = 0; i < inputByteRow.length; i++) {

                byte[] rgb = processValue(inputByteRow[i]);

                for (int band = 0; band < outputRows.size(); band++) {

                    byte[] bs = (byte[])(outputRows.get(band));

                    bs[i] = rgb[band];

                }

            }

        }

        @Override

        public byte[] processValue(Object value) {

            if(noData.isDefined() && noData.getValue().equals(value)){

                byte result[] = {0,0,0,0};

                return result;

            }

            return getInputColorInterpretation().getPalette().getRGBA(value);

        }

    }

}