@Override
protected void loadUncompressedRaster(
final RAWImageInputStream iis, final WritableRaster raster, final RAWImageReaderSupport ir)
throws IOException {
final DataBufferUShort dataBuffer = (DataBufferUShort) raster.getDataBuffer();
final short[] data = dataBuffer.getData();
final int width = raster.getWidth();
final int height = raster.getHeight();
final int pixelStride = 1;
final int scanStride = width * pixelStride;
setBitsPerSample(12);
selectBitReader(iis, raster, 12);
//
// We can rely on the fact that the array has been zeroed by the JVM, so we just set nonzero
// samples.
//
for (int y = 0; y < height; y++) {
final int row = getRow(y, height);
int i = row * scanStride;
for (int x = 0; x < width; x++) {
int sample = (int) iis.readBits(12);
data[i] = (short) sample;
endOfColumn(x, iis);
i += pixelStride;
}
ir.processImageProgress((100.0f * y) / height);
endOfRow(y, iis);
}
}
/**
* Constructs a ShortBandedRaster with the given SampleModel, DataBuffer, and parent. DataBuffer
* must be a DataBufferUShort and SampleModel must be of type BandedSampleModel. When translated
* into the base Raster's coordinate system, aRegion must be contained by the base Raster. Origin
* is the coordinate in the new Raster's coordinate system of the origin of the base Raster. (The
* base Raster is the Raster's ancestor which has no parent.)
*
* <p>Note that this constructor should generally be called by other constructors or create
* methods, it should not be used directly.
*
* @param sampleModel The SampleModel that specifies the layout.
* @param dataBuffer The DataBufferUShort that contains the image data.
* @param aRegion The Rectangle that specifies the image area.
* @param origin The Point that specifies the origin.
* @param parent The parent (if any) of this raster.
*/
public ShortBandedRaster(
SampleModel sampleModel,
DataBuffer dataBuffer,
Rectangle aRegion,
Point origin,
ShortBandedRaster parent) {
super(sampleModel, dataBuffer, aRegion, origin, parent);
this.maxX = minX + width;
this.maxY = minY + height;
if (!(dataBuffer instanceof DataBufferUShort)) {
throw new RasterFormatException("ShortBandedRaster must have " + "ushort DataBuffers");
}
DataBufferUShort dbus = (DataBufferUShort) dataBuffer;
if (sampleModel instanceof BandedSampleModel) {
BandedSampleModel bsm = (BandedSampleModel) sampleModel;
this.scanlineStride = bsm.getScanlineStride();
int bankIndices[] = bsm.getBankIndices();
int bandOffsets[] = bsm.getBandOffsets();
int dOffsets[] = dbus.getOffsets();
dataOffsets = new int[bankIndices.length];
data = new short[bankIndices.length][];
int xOffset = aRegion.x - origin.x;
int yOffset = aRegion.y - origin.y;
for (int i = 0; i < bankIndices.length; i++) {
data[i] = stealData(dbus, bankIndices[i]);
dataOffsets[i] =
dOffsets[bankIndices[i]] + xOffset + yOffset * scanlineStride + bandOffsets[i];
}
} else {
throw new RasterFormatException("ShortBandedRasters must have " + "BandedSampleModels");
}
verify();
}
@Override
protected void computeRect(PlanarImage[] sources, WritableRaster dest, Rectangle destRect) {
final DataBufferUShort dataBuffer = (DataBufferUShort) dest.getDataBuffer();
final short[] tileData = dataBuffer.getData();
final int tileWidth = this.getTileWidth();
final int tileHeight = this.getTileHeight();
final int tileX = destRect.x / tileWidth;
final int tileY = destRect.y / tileHeight;
if (tileWidth * tileHeight != tileData.length) {
throw new IllegalStateException(
String.format(
"tileWidth (=%d) * tileHeight (=%d) != tileData.length (=%d)",
tileWidth, tileHeight, tileData.length));
}
final int resolution = getLevel();
final Dimension jp2TileDim = getJp2TileDim(bandInfo, resolution);
final int jp2TileWidth = jp2TileDim.width;
final int jp2TileHeight = jp2TileDim.height;
final int jp2TileX = destRect.x / jp2TileWidth;
final int jp2TileY = destRect.y / jp2TileHeight;
// Res - Img Size - Tile W
// 0 - 10960 - 4096
// 1 - 5480 - 2048
// 2 - 2740 - 1024
// 3 - 1370 - 512
// 4 - 685 - 256
// 5 - 343 - 128
final File outputFile =
new File(
cacheDir,
FileUtils.exchangeExtension(
imageFile.getName(),
String.format("_R%d_TX%d_TY%d.pgx", resolution, jp2TileX, jp2TileY)));
final File outputFile0 = getFirstComponentOutputFile(outputFile);
if (!outputFile0.exists()) {
System.out.printf(
"Jp2ExeImage.readTileData(): recomputing res=%d, tile=(%d,%d)\n",
resolution, jp2TileX, jp2TileY);
try {
decompressTile(outputFile, jp2TileX, jp2TileY);
} catch (IOException e) {
// warn
outputFile0.delete();
}
if (!outputFile0.exists()) {
Arrays.fill(tileData, (short) 0);
return;
}
}
try {
System.out.printf(
"Jp2ExeImage.readTileData(): reading res=%d, tile=(%d,%d)\n",
resolution, jp2TileX, jp2TileY);
readTileData(
outputFile0,
tileX,
tileY,
tileWidth,
tileHeight,
jp2TileX,
jp2TileY,
jp2TileWidth,
jp2TileHeight,
tileData,
destRect);
} catch (IOException e) {
// warn
}
}