gov/nasa/worldwind/formats/rpf/RpfFrameFileComponents.java

   1 package gov.nasa.worldwind.formats.rpf;
   2
   3 import gov.nasa.worldwind.formats.nitfs.*;
   4 import gov.nasa.worldwind.geom.*;
   5
   6 import java.nio.*;
   7 /*
   8 Copyright (C) 2001, 2007 United States Government
   9 as represented by the Administrator of the
  10 National Aeronautics and Space Administration.
  11 All Rights Reserved.
  12 */
  13
  14 /**
  15  * @author lado
  16  * @version $Id: RpfFrameFileComponents Mar 31, 2007 10:06:22 PM
  17  */
  18 public class RpfFrameFileComponents
  19 {
  20     public static final String DATA_TAG = "RPFIMG";
  21
  22     // [ rpf location section ]
  23     public RpfLocationSection componentLocationTable;
  24
  25     // [ rpf coverage section ]
  26     public LatLon nwUpperLeft, swLowerleft, neUpperRight, seLowerRight;
  27     public double verticalResolutionNorthSouth;
  28     public double horizontalResolutionEastWest;
  29     public double verticalIntervalLatitude;
  30     public double horizontalIntervalLongitude;
  31
  32     // [ color / grayscale section ]
  33     public RpfColorMap[] rpfColorMaps;
  34
  35     // [ rpf color / grayscale section ]
  36     public short numOfColorGrayscaleOffsetRecords;
  37     public short numOfColorConverterOffsetRecords;
  38     public String externalColorGrayscaleFilename;
  39     // [ rpf colormap subsection ]
  40     public long colormapOffsetTableOffset;
  41     public int colormapGrayscaleOffsetRecordLength;
  42
  43     // [ rpf color converter subsection ]
  44
  45     // [ rpf image description subheader ]
  46     public int numOfSpectralGroups;
  47     public int numOfSubframeTables;
  48     public int numOfSpectralBandTables;
  49     public int numOfSpectralBandLinesPerImageRow;
  50     public int numOfSubframesInEastWestDirection;
  51     public int numOfSubframesInNorthSouthDirection;
  52     public long numOfOutputColumnsPerSubframe;
  53     public long numOfOutputRowsPerSubframe;
  54     public long subframeMaskTableOffset;
  55     public long transparencyMaskTableOffset;
  56
  57     // [ rpf related images section ]
  58     public RelatedImagesSection relatedImagesSection = null;
  59
  60     public RpfFrameFileComponents(java.nio.ByteBuffer buffer)
  61     {
  62         this.componentLocationTable = new RpfLocationSection(buffer);
  63
  64         if (0 < this.componentLocationTable.getCoverageSectionSubheaderLength())
  65             this.parseRpfCoverageSection(buffer);
  66
  67         if (0 < this.componentLocationTable.getColorGrayscaleSectionSubheaderLength())
  68             this.parseColorGrayscaleSection(buffer);
  69
  70         if (0 < this.componentLocationTable.getColormapSubsectionLength())
  71             this.parseColormapSubSection(buffer);
  72
  73         if (0 < this.componentLocationTable.getColorConverterSubsectionLength())
  74             this.parseColorConverterSubsection(buffer);
  75
  76         if (0 < this.componentLocationTable.getImageDescriptionSubheaderLength())
  77         {
  78             buffer.position(this.componentLocationTable.getImageDescriptionSubheaderLocation());
  79             this.parseImageDescriptionSubheader(buffer);
  80         }
  81         if (0 < this.componentLocationTable.getRelatedImagesSectionSubheaderLength())
  82         {
  83             buffer.position(this.componentLocationTable.getRelatedImagesSectionSubheaderLocation());
  84             this.relatedImagesSection = new RelatedImagesSection(buffer);
  85         }
  86     }
  87
  88     private void parseImageDescriptionSubheader(java.nio.ByteBuffer buffer)
  89     {
  90         this.numOfSpectralGroups = NitfsUtil.getUShort(buffer);
  91         this.numOfSubframeTables = NitfsUtil.getUShort(buffer);
  92         this.numOfSpectralBandTables = NitfsUtil.getUShort(buffer);
  93         this.numOfSpectralBandLinesPerImageRow = NitfsUtil.getUShort(buffer);
  94         this.numOfSubframesInEastWestDirection = NitfsUtil.getUShort(buffer);
  95         this.numOfSubframesInNorthSouthDirection = NitfsUtil.getUShort(buffer);
  96         this.numOfOutputColumnsPerSubframe = NitfsUtil.getUInt(buffer);
  97         this.numOfOutputRowsPerSubframe = NitfsUtil.getUInt(buffer);
  98         this.subframeMaskTableOffset = NitfsUtil.getUInt(buffer);
  99         this.transparencyMaskTableOffset = NitfsUtil.getUInt(buffer);
 100     }
 101
 102     private void parseColorConverterSubsection(java.nio.ByteBuffer buffer)
 103     {
 104         buffer.position(this.componentLocationTable.getColorConverterSubsectionLocation());
 105 //        if (0 < this.numOfColorConverterOffsetRecords)
 106 //            throw new NitfsRuntimeException("NitfsReader.NotImplemented.ColorConvertorSubsectionReader");
 107     }
 108
 109     private void parseColormapSubSection(java.nio.ByteBuffer buffer)
 110     {
 111         buffer.position(this.componentLocationTable.getColormapSubsectionLocation());
 112
 113         this.colormapOffsetTableOffset = NitfsUtil.getUInt(buffer);
 114         this.colormapGrayscaleOffsetRecordLength = NitfsUtil.getUShort(buffer);
 115         // read color / grayscale AND histogram records; builds a ColorMap (LUT)
 116         if (0 < this.numOfColorGrayscaleOffsetRecords)
 117         {
 118             rpfColorMaps = new RpfColorMap[this.numOfColorGrayscaleOffsetRecords];
 119             for (int i = 0; i < this.numOfColorGrayscaleOffsetRecords; i++)
 120             {
 121                 rpfColorMaps[i] = new RpfColorMap(buffer, this.componentLocationTable.getColormapSubsectionLocation());
 122             }
 123         }
 124         else
 125             throw new NitfsRuntimeException("NitfsReader.InvalidNumberOfRpfColorGrayscaleRecords");
 126     }
 127
 128     private void parseColorGrayscaleSection(java.nio.ByteBuffer buffer)
 129     {
 130         buffer.position(this.componentLocationTable.getColorGrayscaleSectionSubheaderLocation());
 131
 132         this.numOfColorGrayscaleOffsetRecords = NitfsUtil.getByteAsShort(buffer);
 133         this.numOfColorConverterOffsetRecords = NitfsUtil.getByteAsShort(buffer);
 134         this.externalColorGrayscaleFilename = NitfsUtil.getString(buffer, 12);
 135     }
 136
 137     private void parseRpfCoverageSection(java.nio.ByteBuffer buffer)
 138     {
 139         buffer.position(this.componentLocationTable.getCoverageSectionSubheaderLocation());
 140
 141         this.nwUpperLeft = LatLon.fromDegrees(buffer.getDouble(), buffer.getDouble());
 142         this.swLowerleft = LatLon.fromDegrees(buffer.getDouble(), buffer.getDouble());
 143         this.neUpperRight = LatLon.fromDegrees(buffer.getDouble(), buffer.getDouble());
 144         this.seLowerRight = LatLon.fromDegrees(buffer.getDouble(), buffer.getDouble());
 145
 146         this.verticalResolutionNorthSouth = buffer.getDouble();
 147         this.horizontalResolutionEastWest = buffer.getDouble();
 148         this.verticalIntervalLatitude = buffer.getDouble();
 149         this.horizontalIntervalLongitude = buffer.getDouble();
 150     }
 151
 152     public class RelatedImagesSection
 153     {
 154         // [ rpf related images section subheader ]
 155         public long relatedImageDescriptionTableOffset;
 156         public int numOfRelatedImageDescriptionRecords;
 157         public int relatedImageDescriptionRecordLength;
 158
 159         public RelatedImagesSection(java.nio.ByteBuffer buffer)
 160         {
 161             this.relatedImageDescriptionTableOffset = NitfsUtil.getUInt(buffer);
 162             this.numOfRelatedImageDescriptionRecords = NitfsUtil.getUShort(buffer);
 163             this.relatedImageDescriptionRecordLength = NitfsUtil.getUShort(buffer);
 164         }
 165     }
 166 }