svn-gvsig-desktop / tags / v1_1_Build_1013 / libraries / libCq_CMS_praster / src / org / cresques / io / JpegWriter.java @ 13521
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| 1 | 8026 | nacho | /*
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| 2 | * Cresques Mapping Suite. Graphic Library for constructing mapping applications.
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| 3 | *
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| 4 | * Copyright (C) 2004-5.
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| 5 | *
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| 6 | * This program is free software; you can redistribute it and/or
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| 7 | * modify it under the terms of the GNU General Public License
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| 8 | * as published by the Free Software Foundation; either version 2
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| 9 | * of the License, or (at your option) any later version.
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| 10 | *
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| 11 | * This program is distributed in the hope that it will be useful,
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| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 14 | * GNU General Public License for more details.
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| 15 | *
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| 16 | * You should have received a copy of the GNU General Public License
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| 17 | * along with this program; if not, write to the Free Software
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| 18 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,USA.
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| 19 | *
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| 20 | * For more information, contact:
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| 21 | *
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| 22 | * cresques@gmail.com
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| 23 | */
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| 24 | package org.cresques.io; |
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| 25 | |||
| 26 | import java.io.File; |
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| 27 | import java.io.IOException; |
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| 28 | |||
| 29 | import org.cresques.cts.IProjection; |
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| 30 | import org.cresques.geo.ViewPortData; |
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| 31 | import org.cresques.px.PxRaster; |
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| 32 | |||
| 33 | import es.gva.cit.jgdal.Gdal; |
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| 34 | import es.gva.cit.jgdal.GdalDriver; |
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| 35 | import es.gva.cit.jgdal.GdalException; |
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| 36 | |||
| 37 | |||
| 38 | /**
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| 39 | * Driver para la escritura de Jpeg.
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| 40 | 12762 | caballero | * Este driver utiliza GdalWriter para salvar Jpeg.
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| 41 | * La escritura de un jpeg no es posible utilizando un servidor de datos
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| 42 | 8026 | nacho | * como el que usan los drivers comunes por lo que ser? necesario salvar antes
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| 43 | * a Tif con el driver de Gdal para posteriormente convertir la imagen completa
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| 44 | * a jpg.
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| 45 | 12762 | caballero | *
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| 46 | 8026 | nacho | @author Nacho Brodin (brodin_ign@gva.es)
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| 47 | */
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| 48 | public class JpegWriter extends GeoRasterWriter { |
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| 49 | 12762 | caballero | |
| 50 | 8026 | nacho | public final int windowSizeX = 386; |
| 51 | public final int windowSizeY = 220; |
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| 52 | public final int panelSizeX = 358; |
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| 53 | public final int panelSizeY = 125; |
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| 54 | 12762 | caballero | |
| 55 | 8026 | nacho | //Datos de registro de drivers
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| 56 | static {
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| 57 | GeoRasterWriter.registerWriterExtension("jpg", JpegWriter.class);
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| 58 | //GeoRasterWriter.registerWriterExtension("jpeg", JpegWriter.class);
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| 59 | typeList.put("jpg", "Jpeg"); |
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| 60 | //typeList.put("jpeg", "Jpeg");
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| 61 | } |
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| 62 | |||
| 63 | private GdalWriter gdalWriter = null; |
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| 64 | private JpegSupportOptions support = null; |
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| 65 | private String outTif = null; |
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| 66 | private String outJpg = null; |
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| 67 | private String[] props = null; |
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| 68 | private ViewPortData viewPort = null; |
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| 69 | private String[] params = null; //Par?metros de creaci?n del dataset. |
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| 70 | 12762 | caballero | |
| 71 | 8026 | nacho | /**
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| 72 | * Constructor para la obtenci?n de par?metros del driver
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| 73 | * @param drvType Tipo de driver
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| 74 | */
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| 75 | public JpegWriter(String fileName) { |
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| 76 | ident = fileName.toLowerCase().substring(fileName.lastIndexOf(".") + 1); |
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| 77 | driver = (String)typeList.get(ident);
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| 78 | support = new JpegSupportOptions(driver);
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| 79 | gdalWriter = new GdalWriter(fileName);
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| 80 | gdalWriter.getSupport().setTfw(true);
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| 81 | setParams(); |
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| 82 | } |
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| 83 | |||
| 84 | /**
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| 85 | * Constructor para salvar una sola imagen completa
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| 86 | * @param raster PxRaster de la imagen de origen
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| 87 | * @param outfilename Nombre del fichero de salida
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| 88 | * @param infilename Nombre del fichero de entrada
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| 89 | * @param drvType Tipo de driver
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| 90 | */
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| 91 | public JpegWriter(PxRaster raster, String outFileName, String inFileName) throws GdalException, IOException { |
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| 92 | ident = inFileName.toLowerCase().substring(inFileName.lastIndexOf(".") + 1); |
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| 93 | driver = (String)typeList.get(ident);
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| 94 | support = new JpegSupportOptions(driver);
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| 95 | gdalWriter = new GdalWriter(raster, outFileName, inFileName);
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| 96 | gdalWriter.getSupport().setTfw(true);
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| 97 | setParams(); |
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| 98 | } |
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| 99 | |||
| 100 | /**
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| 101 | * Constructor para salvar datos servidos por el cliente
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| 102 | * @param dataWriter Objeto servidor de datos para el driver de escritura
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| 103 | * @param outSizeX N?mero de pixels en X de la imagen de salida
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| 104 | * @param outSizeY N?mero de pixels en Y de la imagen de salida
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| 105 | * @param outFilename Fichero de salida
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| 106 | * @param extentMaxX Posici?n en X m?xima del extent
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| 107 | * @param extentMinX Posici?n en X m?nima del extent
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| 108 | * @param extentMaxY Posici?n en Y m?xima del extent
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| 109 | * @param extentMinY Posici?n en Y m?nima del extent
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| 110 | * @param nBands N?mero de bandas
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| 111 | * @param drvType Tipo de driver
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| 112 | * @throws GdalException
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| 113 | * @throws IOException
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| 114 | */
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| 115 | 12762 | caballero | public JpegWriter( IDataWriter dataWriter,
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| 116 | String outFileName,
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| 117 | Integer blockSize,
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| 118 | 8026 | nacho | Integer nBands,
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| 119 | ViewPortData vp, |
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| 120 | Integer compresion,
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| 121 | Integer outSizeX,
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| 122 | Integer outSizeY,
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| 123 | Integer dataType)throws GdalException, IOException { |
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| 124 | ident = outFileName.toLowerCase().substring(outFileName.lastIndexOf(".") + 1); |
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| 125 | driver = (String)typeList.get(ident);
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| 126 | support = new JpegSupportOptions(driver);
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| 127 | outJpg = outFileName; |
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| 128 | outTif = outFileName.substring(0, outFileName.lastIndexOf(".") + 1); |
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| 129 | outTif = outTif + "tif";
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| 130 | this.viewPort = vp;
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| 131 | 12762 | caballero | gdalWriter = new GdalWriter(dataWriter, outTif, blockSize, nBands,
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| 132 | 8026 | nacho | vp, compresion, outSizeX, outSizeY, dataType); |
| 133 | gdalWriter.getSupport().setTfw(true);
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| 134 | setParams(); |
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| 135 | } |
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| 136 | |||
| 137 | 12762 | caballero | |
| 138 | 8026 | nacho | /**
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| 139 | * Asigna el tipo de driver con el que se salvar? la imagen
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| 140 | * @param drvType Tipo de driver
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| 141 | */
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| 142 | public void setDriverType(String drvType) { |
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| 143 | gdalWriter.setDriverType(drvType); |
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| 144 | } |
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| 145 | 12762 | caballero | |
| 146 | 8026 | nacho | /**
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| 147 | * A partir de un elemento que contiene una propiedad y un valor
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| 148 | * lo parsea y asigna el valor a su variable.
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| 149 | * @param propValue elemento con la forma propiedad=valor
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| 150 | */
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| 151 | private void readProperty(String propValue) { |
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| 152 | String prop = propValue.substring(0, propValue.indexOf("=")); |
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| 153 | |||
| 154 | if (propValue.startsWith(prop)) {
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| 155 | String value = propValue.substring(propValue.indexOf("=") + 1, |
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| 156 | propValue.length()); |
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| 157 | |||
| 158 | if ((value != null) && !value.equals("")) { |
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| 159 | if (prop.equals("COMPRESSION")) |
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| 160 | support.setCompressionDefault(Integer.parseInt(value));
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| 161 | 12762 | caballero | |
| 162 | 8026 | nacho | if (prop.equals("PROGRESSIVE")) { |
| 163 | boolean prog = true; |
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| 164 | |||
| 165 | if (value.equals("yes")) { |
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| 166 | prog = true;
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| 167 | } else {
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| 168 | prog = false;
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| 169 | } |
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| 170 | |||
| 171 | support.setProgressive(prog); |
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| 172 | } |
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| 173 | } |
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| 174 | } |
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| 175 | } |
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| 176 | 12762 | caballero | |
| 177 | 8026 | nacho | /**
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| 178 | * Asigna propiedades al driver a partir de un vector de
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| 179 | * strings donde cada elemento tiene la estructura de
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| 180 | * propiedad=valor.
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| 181 | * @param props Propiedades
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| 182 | */
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| 183 | public void setProps(String[] props) { |
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| 184 | this.props = props;
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| 185 | for (int iProps = 0; iProps < props.length; iProps++) |
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| 186 | readProperty(props[iProps]); |
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| 187 | setParams(); |
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| 188 | } |
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| 189 | |||
| 190 | /**
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| 191 | * Realiza la funci?n de compresi?n a partir de un GeoRasterFile.
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| 192 | * @throws IOException
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| 193 | */
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| 194 | public void fileWrite() throws IOException { |
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| 195 | gdalWriter.fileWrite(); |
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| 196 | } |
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| 197 | |||
| 198 | /**
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| 199 | * Realiza una copia en el formato especificado.
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| 200 | * @throws IOException
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| 201 | */
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| 202 | 12762 | caballero | public static void createCopy(GdalDriver driverDst, String dst, String src, |
| 203 | 8026 | nacho | boolean bstrict, String[] params, IProjection proj) throws IOException, GdalException { |
| 204 | GdalWriter.createCopy(driverDst, dst, src, bstrict, params, proj); |
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| 205 | } |
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| 206 | 12762 | caballero | |
| 207 | 8026 | nacho | /**
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| 208 | *Asigna par?metros de creaci?n del dataset de Gdal
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| 209 | */
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| 210 | private void setParams() { |
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| 211 | params = new String[3]; |
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| 212 | |||
| 213 | params[0] = new String("WORLDFILE=ON"); |
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| 214 | params[1] = new String("QUALITY=" + support.getCompressionRealValue()); |
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| 215 | String prog = null; |
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| 216 | |||
| 217 | if (support.isProgressive()) {
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| 218 | prog = new String("ON"); |
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| 219 | } else {
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| 220 | prog = new String("NO"); |
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| 221 | } |
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| 222 | 12762 | caballero | params[2] = new String("PROGRESSIVE=" + prog); |
| 223 | 8026 | nacho | } |
| 224 | 12762 | caballero | |
| 225 | 8026 | nacho | /**
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| 226 | * Realiza la escritura de datos con los datos que le pasa el cliente.
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| 227 | * @throws IOException
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| 228 | */
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| 229 | public void dataWrite() throws IOException { |
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| 230 | gdalWriter.dataWrite(); |
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| 231 | if(gdalWriter.isWrite()){
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| 232 | gdalWriter.writeClose(); |
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| 233 | if(outTif != null){ |
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| 234 | GdalDriver driver = null;
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| 235 | try{
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| 236 | driver = Gdal.getDriverByName("JPEG");
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| 237 | 12762 | caballero | |
| 238 | GdalWriter.createCopy(driver, outJpg, outTif, false,
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| 239 | 8026 | nacho | params, viewPort.getProjection()); |
| 240 | }catch(GdalException exc){
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| 241 | System.err.println("No se ha podido obtener el driver."); |
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| 242 | } |
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| 243 | File file = new File(outTif); |
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| 244 | 12762 | caballero | file.delete(); |
| 245 | 8026 | nacho | } |
| 246 | } |
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| 247 | } |
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| 248 | |||
| 249 | /**
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| 250 | * Cierra el compresor ecw.
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| 251 | * @throws GdalException
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| 252 | */
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| 253 | public void writeClose() { |
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| 254 | //El close del tif se hizo en dataWrite
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| 255 | } |
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| 256 | |||
| 257 | /**
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| 258 | * Cancela el salvado de datos.
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| 259 | */
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| 260 | public void writeCancel() { |
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| 261 | gdalWriter.setWrite(false);
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| 262 | } |
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| 263 | 12762 | caballero | |
| 264 | 8026 | nacho | /**
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| 265 | * Devuelve la configuraci?n de la ventana de dialogo
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| 266 | * para las propiedades del driver de escritura de Gdal.
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| 267 | * @return XML de configuraci?n del dialogo.
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| 268 | */
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| 269 | public String getXMLPropertiesDialog() { |
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| 270 | StringBuffer options = null; |
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| 271 | options = new StringBuffer(); |
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| 272 | options.append("<window sizex=\"" + windowSizeX + "\" sizey=\"" + |
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| 273 | windowSizeY + "\">");
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| 274 | options.append("<panel sizex=\"" + panelSizeX + "\" sizey=\"" + |
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| 275 | panelSizeY + "\" layout=\"" + gdalWriter.panelLayout +
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| 276 | "\" border=\"yes\">");
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| 277 | |||
| 278 | options.append("<panel layout=\"FlowLayout\" position=\"North\" align=\"left\">");
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| 279 | 12762 | caballero | options.append("<label>block_size</label>");
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| 280 | 8026 | nacho | options.append("<combo ident=\"BLOCKSIZE\" selected=\"" +
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| 281 | gdalWriter.getSupport().getBlockSize() + "\">");
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| 282 | |||
| 283 | for (int i = 0; i < gdalWriter.getSupport().getBlockSizeList().length; i++) |
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| 284 | options.append("<elem>" + gdalWriter.getSupport().getBlockSizeList()[i] +
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| 285 | "</elem>");
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| 286 | |||
| 287 | options.append("</combo>");
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| 288 | options.append("</panel>");
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| 289 | |||
| 290 | 12762 | caballero | |
| 291 | 8026 | nacho | options.append("<panel layout=\"FlowLayout\" position=\"Center\">");
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| 292 | options.append("<slider ident=\"COMPRESSION\" name=\"Compression\" sizex=\"370\" sizey=\"20\">");
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| 293 | options.append("<min>" + support.getCompressionList()[0] + |
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| 294 | "</min>");
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| 295 | options.append("<max>" + support.getCompressionList()[1] + |
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| 296 | "</max>");
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| 297 | options.append("<value>" + support.getCompressionDefault() + "</value>"); |
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| 298 | options.append("<minorspacing>" + support.getCompressionList()[3] + |
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| 299 | "</minorspacing>");
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| 300 | options.append("<majorspacing>" + support.getCompressionList()[4] + |
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| 301 | "</majorspacing>");
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| 302 | options.append("</slider>");
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| 303 | options.append("</panel>");
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| 304 | |||
| 305 | 12762 | caballero | |
| 306 | 8026 | nacho | options.append("<panel layout=\"FlowLayout\" position=\"South\" align=\"left\">");
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| 307 | 12762 | caballero | options.append("<label>progressive</label>");
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| 308 | 8026 | nacho | String sel = null; |
| 309 | if (support.isProgressive()) {
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| 310 | sel = new String("yes"); |
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| 311 | } else {
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| 312 | sel = new String("no"); |
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| 313 | } |
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| 314 | options.append("<check ident=\"PROGRESSIVE\" selected=\"" + sel +
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| 315 | "\" text=\"\">");
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| 316 | options.append("</check>");
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| 317 | |||
| 318 | options.append("</panel>");
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| 319 | 12762 | caballero | |
| 320 | 8026 | nacho | options.append("</panel>");
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| 321 | options.append("</window>");
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| 322 | |||
| 323 | return options.toString();
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| 324 | } |
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| 325 | 12762 | caballero | |
| 326 | 8026 | nacho | /**
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| 327 | *
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| 328 | * @author Nacho Brodin (brodin_ign@gva.es)
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| 329 | *
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| 330 | * Opciones que soporta el driver de escritura de Jpeg.
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| 331 | */
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| 332 | public class JpegSupportOptions extends WriterSupportOptions { |
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| 333 | 12762 | caballero | private boolean progressive = true; |
| 334 | 8026 | nacho | private String[] compresionListValues = { "10", "100", "16", "5", "30" }; //min, max, valor defecto, intervalo peque?o, intervalo grande; |
| 335 | private int compresionDefaultValue = 16; |
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| 336 | 12762 | caballero | |
| 337 | 8026 | nacho | public JpegSupportOptions(String ext) { |
| 338 | super(ext);
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| 339 | } |
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| 340 | |||
| 341 | /**
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| 342 | * Obtiene la compresion seleccionada
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| 343 | * @return Compresi?n seleccionada
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| 344 | */
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| 345 | public int getCompressionDefault() { |
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| 346 | return compresionDefaultValue;
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| 347 | } |
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| 348 | |||
| 349 | /**
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| 350 | * Obtiene la compresion seleccionada en el valor real que necesita gdal. Por defecto gdal
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| 351 | 12762 | caballero | * tiene un valor de 75 en un rango de 10-100 donde 10 es la m?xima compresi?n.
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| 352 | * Como el slider est? en un rango de 0-100 donde el 100 es la m?xima compresi?n y 0
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| 353 | 8026 | nacho | * la m?nima hay que hacer una conversi?n.
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| 354 | * @return Compresi?n seleccionada
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| 355 | */
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| 356 | public int getCompressionRealValue() { |
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| 357 | return 110 - compresionDefaultValue; |
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| 358 | } |
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| 359 | |||
| 360 | 12762 | caballero | |
| 361 | 8026 | nacho | /**
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| 362 | * Obtiene la lista de los valores para la generaci?n de la barra de
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| 363 | * compresi?n. Son cinco valores m?nimo, m?ximo, seleccionado,
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| 364 | * intervalo peque?o, intervalo grande.
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| 365 | * @return lista de valores de compresi?n
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| 366 | */
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| 367 | public String[] getCompressionList() { |
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| 368 | return compresionListValues;
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| 369 | } |
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| 370 | 12762 | caballero | |
| 371 | 8026 | nacho | /**
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| 372 | * Asigna el nivel de compresi?npor defecto
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| 373 | * @param compress Nivel de compresi?n
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| 374 | */
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| 375 | public void setCompressionDefault(int compress) { |
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| 376 | this.compresionDefaultValue = compress;
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| 377 | } |
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| 378 | 12762 | caballero | |
| 379 | 8026 | nacho | /**
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| 380 | * Asigna la lista de valores de compresi?n
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| 381 | * @param compresion lista de valores
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| 382 | */
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| 383 | public void setCompressionList(String[] compresion) { |
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| 384 | this.compresionListValues = compresion;
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| 385 | } |
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| 386 | 12762 | caballero | |
| 387 | 8026 | nacho | public boolean isProgressive() { |
| 388 | return progressive;
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| 389 | } |
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| 390 | |||
| 391 | public void setProgressive(boolean progressive) { |
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| 392 | this.progressive = progressive;
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| 393 | } |
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| 394 | } |
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| 395 | } |