Jp2ExeOpImage(BandInfo bandInfo, MultiLevelModel imageModel, int level) throws IOException {
super(
DataBuffer.TYPE_USHORT,
bandInfo.imageLayout.width,
bandInfo.imageLayout.height,
getTileDim(bandInfo, level),
null,
ResolutionLevel.create(imageModel, level));
final File resolvedFile = bandInfo.imageFile.getCanonicalFile();
if (!resolvedFile.exists()) {
throw new FileNotFoundException("File not found: " + bandInfo.imageFile);
}
if (resolvedFile.getParentFile() == null) {
throw new IOException("Can't determine package directory");
}
final File cacheDir =
new File(
new File(SystemUtils.getApplicationDataDir(), "jopenjpeg/cache"),
resolvedFile.getParentFile().getName());
cacheDir.mkdirs();
if (!cacheDir.exists() || !cacheDir.isDirectory() || !cacheDir.canWrite()) {
throw new IOException("Can't access package cache directory");
}
this.bandInfo = bandInfo;
this.imageFile = resolvedFile;
this.cacheDir = cacheDir;
this.openFiles = new HashMap<File, Jp2File>();
this.locks = new HashMap<File, Object>();
}
@Override
protected RenderedImage createImage(int level) {
RasterDataNode rdn = getRasterDataNode();
NetcdfFile lock = ctx.getNetcdfFile();
final Object object = ctx.getProperty(Constants.Y_FLIPPED_PROPERTY_NAME);
boolean isYFlipped = object instanceof Boolean && (Boolean) object;
int dataBufferType = ImageManager.getDataBufferType(rdn.getDataType());
int sourceWidth = (int) (rdn.getSceneRasterWidth() / scaleFactor);
int sourceHeight = (int) (rdn.getSceneRasterHeight() / scaleFactor);
ResolutionLevel resolutionLevel = ResolutionLevel.create(getModel(), level);
Dimension tileSize = getPreferredTileSize(rdn);
RenderedImage netcdfImg;
if (variable.getDataType() == DataType.LONG) {
if (rdn.getName().endsWith("_lsb")) {
netcdfImg =
NetcdfOpImage.createLsbImage(
variable,
imageOrigin,
isYFlipped,
lock,
dataBufferType,
sourceWidth,
sourceHeight,
tileSize,
resolutionLevel);
} else {
netcdfImg =
NetcdfOpImage.createMsbImage(
variable,
imageOrigin,
isYFlipped,
lock,
dataBufferType,
sourceWidth,
sourceHeight,
tileSize,
resolutionLevel);
}
} else {
netcdfImg =
new NetcdfOpImage(
variable,
imageOrigin,
isYFlipped,
lock,
dataBufferType,
sourceWidth,
sourceHeight,
tileSize,
resolutionLevel);
}
return ScaleDescriptor.create(
netcdfImg,
scaleFactor,
scaleFactor,
0.5f,
0.5f,
Interpolation.getInstance(Interpolation.INTERP_NEAREST),
null);
}