private RowInfo[] createRowInfos() throws IOException {
final ISINGrid grid = this.grid;
final RowInfo[] binLines = new RowInfo[sceneHeight];
final Variable idxVariable =
ncFile.getRootGroup().findGroup("Level-3_Binned_Data").findVariable("BinList");
final Structure idxStructure = (Structure) idxVariable;
final Variable idx = idxStructure.findVariable("bin_num");
final int[] idxValues;
synchronized (ncFile) {
idxValues = (int[]) idx.read().getStorage();
}
if (bins == null) {
bins = idxValues; // (int[]) idxVariable.read().copyTo1DJavaArray();
}
final Point gridPoint = new Point();
int lastBinIndex = -1;
int lastRowIndex = -1;
int lineOffset = 0;
int lineLength = 0;
for (int i = 0; i < idxValues.length; i++) {
final int binIndex = idxValues[i];
if (binIndex < lastBinIndex) {
throw new IOException(
"Unrecognized level-3 format. Bins numbers expected to appear in ascending order.");
}
lastBinIndex = binIndex;
grid.getGridPoint(binIndex, gridPoint);
final int rowIndex = gridPoint.y;
if (rowIndex != lastRowIndex) {
if (lineLength > 0) {
binLines[lastRowIndex] = new RowInfo(lineOffset, lineLength);
}
lineOffset = i;
lineLength = 0;
}
lineLength++;
lastRowIndex = rowIndex;
}
if (lineLength > 0) {
binLines[lastRowIndex] = new RowInfo(lineOffset, lineLength);
}
return binLines;
}
@Override
public synchronized void readBandData(
Band destBand,
int sourceOffsetX,
int sourceOffsetY,
int sourceWidth,
int sourceHeight,
int sourceStepX,
int sourceStepY,
ProductData destBuffer,
ProgressMonitor pm)
throws IOException, InvalidRangeException {
final Variable variable = variableMap.get(destBand);
DataType prodtype = variable.getDataType();
float[] fbuffer;
short[] sbuffer;
int[] ibuffer;
byte[] bbuffer;
Object buffer;
if (prodtype == DataType.FLOAT) {
fbuffer = (float[]) destBuffer.getElems();
Arrays.fill(fbuffer, Float.NaN);
buffer = fbuffer;
} else if (prodtype == DataType.SHORT) {
sbuffer = (short[]) destBuffer.getElems();
Arrays.fill(sbuffer, (short) -999);
buffer = sbuffer;
} else if (prodtype == DataType.BYTE) {
bbuffer = (byte[]) destBuffer.getElems();
Arrays.fill(bbuffer, (byte) 255);
buffer = bbuffer;
} else {
ibuffer = (int[]) destBuffer.getElems();
Arrays.fill(ibuffer, -999);
buffer = ibuffer;
}
if (rowInfo == null) {
rowInfo = createRowInfos();
}
final int height = sceneHeight;
final int width = sceneWidth;
final ISINGrid grid = this.grid;
// loop over lines
try {
int[] lineOffsets = new int[1];
int[] lineLengths = new int[1];
int[] stride = new int[1];
stride[0] = 1;
// for (int y = sourceOffsetY; y < sourceOffsetY + sourceHeight; y++) {
for (int y = sourceOffsetY; y < sourceOffsetY + sourceHeight; y += sourceStepY) {
if (pm.isCanceled()) {
break;
}
final int rowIndex = (height - 1) - y;
final RowInfo rowInfo = this.rowInfo[rowIndex];
if (rowInfo != null) {
final int lineOffset = rowInfo.offset;
final int lineLength = rowInfo.length;
lineOffsets[0] = lineOffset;
lineLengths[0] = lineLength;
final Object bindata;
synchronized (ncFile) {
bindata = variable.read().section(lineOffsets, lineLengths, stride).copyTo1DJavaArray();
}
int lineIndex0 = 0;
for (int x = sourceOffsetX; x < sourceOffsetX + sourceWidth; x++) {
final double lon = x * 360.0 / width;
final int binIndex = grid.getBinIndex(rowIndex, lon);
int lineIndex = -1;
for (int i = lineIndex0; i < lineLength; i++) {
int binidx = bins[lineOffset + i];
if (binidx >= binIndex) {
if (binidx == binIndex) {
lineIndex = i;
}
lineIndex0 = i;
break;
}
}
if (lineIndex >= 0) {
final int rasterIndex = sourceWidth * (y - sourceOffsetY) + (x - sourceOffsetX);
System.arraycopy(bindata, lineIndex, buffer, rasterIndex, 1);
}
}
pm.worked(1);
}
}
} finally {
pm.done();
}
}
// Don't do this...it hurts. Too much of a memory hog...
private void addBandsBinMap(Product product) throws IOException, InvalidRangeException {
String[] bandList = product.getBandNames();
if (rowInfo == null) {
rowInfo = createRowInfos();
}
final int height = sceneHeight;
final int width = sceneWidth;
final ISINGrid grid = this.grid;
// loop over lines
try {
int[] lineOffsets = new int[1];
int[] lineLengths = new int[1];
int[] stride = new int[1];
stride[0] = 1;
// for (int y = sourceOffsetY; y < sourceOffsetY + sourceHeight; y++) {
for (String name : bandList) {
if (name.endsWith("mean") || name.endsWith("stdev")) continue;
Band band = product.getBand(name);
ProductData buffer;
final Variable variable = variableMap.get(band);
DataType prodtype = variable.getDataType();
float[] fbuffer = new float[width * height];
short[] sbuffer = new short[width * height];
int[] ibuffer = new int[width * height];
byte[] bbuffer = new byte[width * height];
if (prodtype == DataType.FLOAT) {
Arrays.fill(fbuffer, Float.NaN);
buffer = ProductData.createInstance(fbuffer);
} else if (prodtype == DataType.SHORT) {
Arrays.fill(sbuffer, (short) -999);
buffer = ProductData.createInstance(sbuffer);
} else if (prodtype == DataType.BYTE) {
Arrays.fill(bbuffer, (byte) 255);
buffer = ProductData.createInstance(bbuffer);
} else {
Arrays.fill(ibuffer, -999);
buffer = ProductData.createInstance(ibuffer);
}
for (int y = 0; y < height; y++) {
final int rowIndex = (height - 1) - y;
final RowInfo rowInfo = this.rowInfo[rowIndex];
if (rowInfo != null) {
final Array bindata;
final int lineOffset = rowInfo.offset;
final int lineLength = rowInfo.length;
lineOffsets[0] = lineOffset;
lineLengths[0] = lineLength;
synchronized (ncFile) {
bindata =
variable
.read()
.section(lineOffsets, lineLengths, stride); // .copyTo1DJavaArray();
}
int lineIndex0 = 0;
for (int x = 0; x < width; x++) {
final double lon = x * 360.0 / width;
final int binIndex = grid.getBinIndex(rowIndex, lon);
int lineIndex = -1;
for (int i = lineIndex0; i < lineLength; i++) {
int binidx = bins[lineOffset + i];
if (binidx >= binIndex) {
if (binidx == binIndex) {
lineIndex = i;
}
lineIndex0 = i;
break;
}
}
if (lineIndex >= 0) {
final int rasterIndex = width * y + x;
final Array elem;
elem = Array.factory(bindata.copyTo1DJavaArray());
for (int i = 0; i < elem.getSize(); i++) {
if (prodtype == DataType.FLOAT) {
buffer.setElemFloatAt(rasterIndex, elem.getFloat(i));
} else {
buffer.setElemIntAt(rasterIndex, elem.getInt(i));
}
// System.arraycopy(bindata, lineIndex, buffer,
// rasterIndex, 1);
}
}
}
}
}
band.setDataElems(buffer);
}
} catch (IOException e) {
throw new IOException("Could not map product " + product.getName(), e);
}
}