Examples of org.geotools.coverage.grid.io.imageio.geotiff.GeoKeyEntry

Package org.geotools.coverage.grid.io.imageio.geotiff

Examples of org.geotools.coverage.grid.io.imageio.geotiff.GeoKeyEntry

org.geotools.coverage.grid.io.imageio.geotiff.GeoKeyEntry
This class is a holder for a GeoKey record containing four short values as specified in the GeoTiff spec. The values are a GeoKey ID, the TIFFTag number of the location of this data, the count of values for this GeoKey, and the offset (or value if the location is 0).
If the Tiff Tag location is 0, then the value is a Short and is contained in the offset. Otherwise, there is one or more value in the specified external Tiff tag. The number is specified by the count field, and the offset into the record is the offset field.
@author Simone Giannecchini, GeoSolutions @author Mike Nidel @source $URL$

      return (GeoKeyEntry) (it);
    return null;
  }


  public GeoKeyEntry getGeoKeyEntry(int keyID) {
    GeoKeyEntry retVal = null;
    final Object o = geoTiffEntries.first(Integer.valueOf(keyID));
    if (o != null)
      retVal = (GeoKeyEntry) o;


    return retVal;

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  public boolean hasGeoKeyEntry(int keyID) {
    return getGeoKeyEntry(keyID) != null;
  }


  public int getGeoShortParam(int keyID) {
    final GeoKeyEntry entry = getNonNullKeyEntry(keyID);
    final int tag = entry.getTiffTagLocation();
    final int value = entry.getValueOffset();
    checkParamTag(tag, 0);


    return value;
  }

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    return value;
  }


  public double getGeoDoubleParam(int keyID) {
    final GeoKeyEntry entry = getNonNullKeyEntry(keyID);
    final int tag = entry.getTiffTagLocation();
    final int offset = entry.getValueOffset();
    checkParamTag(tag, getGeoDoubleParamsTag().getNumber());


    return geoTiffDoubleParams[offset];
  }

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  public double[] getGeoDoubleParams(int keyID) {
    return getGeoDoubleParams(keyID, null);
  }


  public double[] getGeoDoubleParams(int keyID, double[] values) {
    final GeoKeyEntry entry = getNonNullKeyEntry(keyID);
    final int tag = entry.getTiffTagLocation();
    final int count = entry.getCount();
    final int offset = entry.getValueOffset();
    checkParamTag(tag, getGeoDoubleParamsTag().getNumber());


    if (values == null) {
      values = new double[count];
    }

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    return values;
  }


  public String getGeoAsciiParam(int keyID) {
    final GeoKeyEntry entry = getNonNullKeyEntry(keyID);
    final int tag = entry.getTiffTagLocation();
    final int count = entry.getCount();
    final int offset = entry.getValueOffset();
    checkParamTag(tag, getGeoAsciiParamsTag().getNumber());


    return geoTiffAsciiParams.substring(offset, (offset + count) - 1);
  }

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    if (!isTiffUShort(offset)) {
      throw new IllegalArgumentException("offset is not a TIFF USHORT");
    }


    final int numKeyEntries = numGeoTiffEntries;
    geoTiffEntries.add(Integer.valueOf(keyID), new GeoKeyEntry(keyID, tag,
        count, offset));
    getGeoKeyEntryAt(0).setCount(numKeyEntries);
    numGeoTiffEntries++;
  }

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  protected static TIFFTag getNoDataTag() {
          return GeoTiffConstants.NODATA_TAG;
        }


  private GeoKeyEntry getNonNullKeyEntry(int keyID) {
    final GeoKeyEntry entry = getGeoKeyEntry(keyID);


    if (entry == null) {
      throw new IllegalArgumentException(
          "Unable to find an entry for the provided geo key " + keyID);
    }

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        geoKeys = new HashMap<Integer, GeoKeyEntry>();
        if (geoKeyDir != null) {
            NodeList geoKeyDirEntries = geoKeyDir.getFirstChild().getChildNodes();
            for (int i = 4; i < geoKeyDirEntries.getLength(); i += 4) {
                int keyID = GeoTiffMetadataUtilities.getIntValueAttribute(geoKeyDirEntries.item(i));
                GeoKeyEntry key = new GeoKeyEntry(keyID,// key
                        GeoTiffMetadataUtilities.getIntValueAttribute(geoKeyDirEntries.item(i + 1)),// location
                        GeoTiffMetadataUtilities.getIntValueAttribute(geoKeyDirEntries.item(i + 2)),// count
                        GeoTiffMetadataUtilities.getIntValueAttribute(geoKeyDirEntries.item(i + 3)));// offset


                if (!geoKeys.containsKey(keyID)) {

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     * 
     * @return A string representing the value, or null if the key was not found.
     */
    public String getGeoKey(final int keyID) {


        final GeoKeyEntry rec = getGeoKeyRecord(keyID);
        if (rec == null) {
            return null;
        }
        if (rec.getTiffTagLocation() == 0) {
            // value is stored directly in the GeoKey record
            return String.valueOf(rec.getValueOffset());
        }


        // value is stored externally
        // get the TIFF field where the data is actually stored
        final IIOMetadataNode field = GeoTiffMetadataUtilities.getTiffField(rootNode, rec.getTiffTagLocation());
        if (field == null) {
            return null;
        }


        final Node sequence = field.getFirstChild();
        if (sequence == null) {
            return null;
        }


        return sequence.getNodeName().equals(GeoTiffConstants.GEOTIFF_ASCIIS_TAG) ? GeoTiffMetadataUtilities.getTiffAscii(
                (IIOMetadataNode) sequence, rec.getValueOffset(), rec.getCount())
                : GeoTiffMetadataUtilities.getValueAttribute(sequence.getChildNodes().item(rec.getValueOffset()));
    }

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Related Classes of org.geotools.coverage.grid.io.imageio.geotiff.GeoKeyEntry

org.geotools.coverage.grid.imageio.geotiff.metadata.GeoTiffIIOMetadataDecoder

org.geotools.coverage.grid.imageio.geotiff.metadata.GeoTiffIIOMetadataEncoder

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