Ejemplo n.º 1
0
 private void readBandRasterDataSubSampling(
     Band sourceBand,
     int sourceOffsetX,
     int sourceOffsetY,
     int sourceWidth,
     int sourceHeight,
     int sourceStepX,
     int sourceStepY,
     ProductData destBuffer,
     int destWidth,
     ProgressMonitor pm)
     throws IOException {
   final int sourceMinY = sourceOffsetY;
   final int sourceMaxY = sourceOffsetY + sourceHeight - 1;
   ProductData lineBuffer = ProductData.createInstance(destBuffer.getType(), sourceWidth);
   int destPos = 0;
   try {
     pm.beginTask("Reading sub sampled raster data...", 2 * (sourceMaxY - sourceMinY));
     for (int sourceY = sourceMinY; sourceY <= sourceMaxY; sourceY += sourceStepY) {
       sourceBand.readRasterData(
           sourceOffsetX, sourceY, sourceWidth, 1, lineBuffer, SubProgressMonitor.create(pm, 1));
       if (sourceStepX == 1) {
         copyData(lineBuffer, 0, destBuffer, destPos, destWidth);
       } else {
         copyLine(lineBuffer, 0, sourceWidth, sourceStepX, destBuffer, destPos);
       }
       pm.worked(1);
       destPos += destWidth;
     }
   } finally {
     pm.done();
   }
 }
Ejemplo n.º 2
0
 public DataNode(String name, ProductData data, boolean readOnly) {
   super(name);
   Guardian.assertNotNull("data", data);
   this.dataType = data.getType();
   this.numElems = data.getNumElems();
   this.data = data;
   this.readOnly = readOnly;
 }
Ejemplo n.º 3
0
  /**
   * Checks if the data that should be used to access the data is compatible with the data this node
   * can hold.
   *
   * @param data the data to be checked for compatibility
   * @throws IllegalArgumentException if data is invalid.
   */
  protected void checkDataCompatibility(ProductData data) throws IllegalArgumentException {

    Debug.assertNotNull(data);

    if (data.getType() != getDataType()) {
      throw new IllegalArgumentException(
          "illegal data for data node '"
              + getName()
              + "', type "
              + ProductData.getTypeString(getDataType())
              + " expected");
    }

    if (data.getNumElems() != getNumDataElems()) {
      throw new IllegalArgumentException(
          "illegal number of data elements for data node '"
              + getName()
              + "', "
              + getNumDataElems()
              + " elements expected");
    }
  }
Ejemplo n.º 4
0
  /** {@inheritDoc} */
  public void writeBandRasterData(
      Band sourceBand,
      int sourceOffsetX,
      int sourceOffsetY,
      int sourceWidth,
      int sourceHeight,
      ProductData sourceBuffer,
      ProgressMonitor pm)
      throws IOException {
    checkBufferSize(sourceWidth, sourceHeight, sourceBuffer);
    final int sourceBandWidth = sourceBand.getSceneRasterWidth();
    final int sourceBandHeight = sourceBand.getSceneRasterHeight();
    checkSourceRegionInsideBandRegion(
        sourceWidth, sourceBandWidth, sourceHeight, sourceBandHeight, sourceOffsetX, sourceOffsetY);

    int memTypeID = -1;
    int memSpaceID = -1;

    pm.beginTask("Writing band '" + sourceBand.getName() + "'...", 1);
    try {
      final int datasetID = getOrCreateBandH5D(sourceBand);
      final int fileSpaceID = H5.H5Dget_space(datasetID);
      final long[] memDims = new long[] {sourceHeight, sourceWidth};
      final long[] memStart = new long[2];
      final long[] memCount = new long[2];
      final long[] fileStart = new long[2];
      final long[] fileCount = new long[2];

      memTypeID = createH5TypeID(sourceBuffer.getType());
      memSpaceID = H5.H5Screate_simple(2, memDims, null);

      memStart[0] = 0;
      memStart[1] = 0;
      memCount[0] = sourceHeight;
      memCount[1] = sourceWidth;
      H5.H5Sselect_hyperslab(
          memSpaceID, HDF5Constants.H5S_SELECT_SET, memStart, null, memCount, null);

      fileStart[0] = sourceOffsetY;
      fileStart[1] = sourceOffsetX;
      fileCount[0] = sourceHeight;
      fileCount[1] = sourceWidth;
      H5.H5Sselect_hyperslab(
          fileSpaceID, HDF5Constants.H5S_SELECT_SET, fileStart, null, fileCount, null);

      H5.H5Dwrite(
          datasetID,
          memTypeID,
          memSpaceID,
          fileSpaceID,
          HDF5Constants.H5P_DEFAULT,
          sourceBuffer.getElems());

      pm.worked(1);
    } catch (IOException e) {
      throw e;
    } catch (HDF5Exception e) {
      throw new ProductIOException(createErrorMessage(e));
    } finally {
      closeH5S(memSpaceID);
      closeH5T(memTypeID);
      pm.done();
    }
  }