svn-gvsig-desktop / trunk / libraries / libjni-mrsid / src-test / Overviews.java @ 8460
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1 | 743 | igbrotru | /**********************************************************************
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2 | * $Id$
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3 | *
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4 | * Name: Overviews.java
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5 | * Project:
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6 | * Purpose:
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7 | * Author: Nacho Brodin, brodin_ign@gva.es
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8 | *
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9 | **********************************************************************/
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10 | 2214 | igbrotru | /* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana
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11 | *
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12 | * Copyright (C) 2004 IVER T.I. and Generalitat Valenciana.
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13 | *
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14 | * This program is free software; you can redistribute it and/or
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15 | * modify it under the terms of the GNU General Public License
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16 | * as published by the Free Software Foundation; either version 2
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17 | * of the License, or (at your option) any later version.
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18 | *
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19 | * This program is distributed in the hope that it will be useful,
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20 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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21 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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22 | * GNU General Public License for more details.
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23 | *
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24 | * You should have received a copy of the GNU General Public License
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25 | * along with this program; if not, write to the Free Software
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26 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,USA.
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27 | *
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28 | * For more information, contact:
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29 | *
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30 | * Generalitat Valenciana
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31 | * Conselleria d'Infraestructures i Transport
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32 | * Av. Blasco Ib??ez, 50
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33 | * 46010 VALENCIA
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34 | * SPAIN
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35 | *
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36 | * +34 963862235
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37 | * gvsig@gva.es
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38 | * www.gvsig.gva.es
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39 | *
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40 | * or
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41 | *
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42 | * IVER T.I. S.A
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43 | * Salamanca 50
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44 | * 46005 Valencia
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45 | * Spain
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46 | *
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47 | * +34 963163400
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48 | * dac@iver.es
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49 | */
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50 | 743 | igbrotru | |
51 | import es.gva.cit.jmrsid.*; |
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52 | import java.io.*; |
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53 | |||
54 | 2216 | igbrotru | /**
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55 | * Ejemplo de acceso a una overview de un mrsid. Accede a la imagen pasada como par?metro muestra
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56 | * alguna informaci?n y a partir de la ?ltima overview salva a .raw toda la imagen.
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57 | *
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58 | * @author Nacho Brodin <brodin_ign@gva.es>.<BR> Equipo de desarrollo gvSIG.<BR> http://www.gvsig.gva.es
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59 | * @version 0.0
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60 | * @link http://www.gvsig.gva.es
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61 | */
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62 | 743 | igbrotru | public class Overviews { |
63 | public static void main(String[] args){ |
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64 | |||
65 | LTIImageReader img; |
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66 | LTIMetadataDatabase metadata; |
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67 | LTIPixel pixel; |
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68 | int eColorSpace, nBands, eSampleType;
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69 | |||
70 | try{
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71 | img = new MrSIDImageReader(args[0]); |
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72 | img.initialize(); |
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73 | |||
74 | 744 | igbrotru | //Obtenemos algunos datos
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75 | |||
76 | 8460 | nacho | int overviews = ((MrSIDImageReader)img).getNumLevels() ;
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77 | 743 | igbrotru | System.out.println("Overviews="+overviews); |
78 | System.out.println("Width="+img.getWidth()); |
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79 | System.out.println("Height="+img.getHeight()); |
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80 | System.out.println("Stripsheigth="+img.getStripHeight()); |
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81 | nBands=img.getNumBands(); |
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82 | System.out.println("NumBands="+nBands); |
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83 | eColorSpace=img.getColorSpace(); |
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84 | System.out.println("ColorSpace="+eColorSpace); |
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85 | eSampleType=img.getDataType(); |
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86 | System.out.println("DataType="+eSampleType); |
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87 | pixel=new LTIPixel(eColorSpace, nBands, eSampleType);
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88 | 8460 | nacho | double mag = ((LTIImage)img).getMinMagnification();
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89 | System.out.println("MinMagnification="+mag); |
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90 | |||
91 | System.out.println("Levels from min mag: " + ((MrSIDImageReader)img).getNumLevelsFromMinMagnification()); |
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92 | 743 | igbrotru | |
93 | System.out.println("**************Zoom******************"); |
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94 | |||
95 | 8460 | nacho | for(int i = 0; i < overviews ; i++){ |
96 | double zoom = LTIUtils.levelToMag(i);
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97 | int[] dims=img.getDimsAtMag(zoom); |
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98 | System.out.println("Dims At overview "+ i +"= "+dims[0]+" "+dims[1]); |
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99 | System.out.println("Zoom="+zoom); |
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100 | } |
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101 | |||
102 | 743 | igbrotru | double zoom = LTIUtils.levelToMag(overviews);
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103 | int[] dims=img.getDimsAtMag(zoom); |
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104 | System.out.println("************************************"); |
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105 | |||
106 | //Creamos la escena con el tama?o del overview deseado
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107 | |||
108 | LTIScene scene=new LTIScene(0,0,dims[0],dims[1],zoom); |
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109 | 2222 | igbrotru | LTISceneBuffer buffer=new LTISceneBuffer(pixel,dims[0],dims[1],true); |
110 | 743 | igbrotru | ((LTIImageStage)img).read(scene,buffer); |
111 | |||
112 | FileOutputStream s=null; |
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113 | |||
114 | try{
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115 | File mifichero=new File("exit.raw"); |
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116 | s = new FileOutputStream(mifichero); |
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117 | }catch(Exception e){} |
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118 | |||
119 | |||
120 | try{
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121 | for(int j=0;j<buffer.size;j++){ |
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122 | s.write(buffer.buf1,j,1);
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123 | s.write(buffer.buf2,j,1);
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124 | s.write(buffer.buf3,j,1);
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125 | } |
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126 | }catch(IOException e){ |
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127 | System.out.println("Error writing a line in the file\n"); |
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128 | System.exit(1); |
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129 | } |
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130 | |||
131 | |||
132 | |||
133 | |||
134 | }catch(Exception e){ |
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135 | e.printStackTrace(); |
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136 | |||
137 | } |
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138 | |||
139 | |||
140 | |||
141 | } |
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142 | } |