Example usage for javax.imageio ImageIO getUseCache

List of usage examples for javax.imageio ImageIO getUseCache

Introduction

In this page you can find the example usage for javax.imageio ImageIO getUseCache.

Prototype

public static boolean getUseCache() 

Source Link

Document

Returns the current value set by setUseCache , or true if no explicit setting has been made.

Usage

From source file:fr.gael.dhus.datastore.processing.impl.ProcessProductImages.java

@Override
public void run(final Product product) {
    if (ImageIO.getUseCache())
        ImageIO.setUseCache(false);

    DrbNode node = null;//from  w  ww.j av a2 s  . c o  m
    URL url = product.getPath();

    // Prepare the DRb node to be processed
    try {
        // First : force loading the model before accessing items.
        @SuppressWarnings("unused")
        DrbCortexModel model = DrbCortexModel.getDefaultModel();
        node = ProcessingUtils.getNodeFromPath(url.getPath());

        if (node == null) {
            throw new IOException("Cannot Instantiate Drb with URI \"" + url.toExternalForm() + "\".");
        }

    } catch (Exception e) {
        logger.error("Exception raised while processing Quicklook", e);
        return;
    }

    if (!ImageFactory.isImage(node)) {
        logger.debug("No Image.");
        return;
    }

    RenderedImageList input_list = null;
    RenderedImage input_image = null;
    try {
        input_list = ImageFactory.createImage(node);
        input_image = RenderingFactory.createDefaultRendering(input_list);
    } catch (Exception e) {
        logger.debug("Cannot retrieve default rendering");
        if (logger.isDebugEnabled()) {
            logger.debug("Error occurs during rendered image reader", e);
        }

        if (input_list == null)
            return;
        input_image = input_list;
    }

    int quicklook_width = cfgManager.getProductConfiguration().getQuicklookConfiguration().getWidth();
    int quicklook_height = cfgManager.getProductConfiguration().getQuicklookConfiguration().getHeight();
    boolean quicklook_cutting = cfgManager.getProductConfiguration().getQuicklookConfiguration().isCutting();

    logger.info("Generating Quicklook " + quicklook_width + "x" + quicklook_height + " from "
            + input_image.getWidth() + "x" + input_image.getHeight());

    RenderedImage image = ProcessingUtils.ResizeImage(input_image, quicklook_width, quicklook_height, 10f,
            quicklook_cutting);

    String product_id = product.getIdentifier();
    if (product_id == null)
        product_id = "unknown";

    // Manages the quicklook output
    File image_directory = incomingManager.getNewIncomingPath();

    LockFactory lf = new NativeFSLockFactory(image_directory);
    Lock lock = lf.makeLock(".lock-writing");
    try {
        lock.obtain(900000);
    } catch (Exception e) {
        logger.warn("Cannot lock incoming directory - continuing without (" + e.getMessage() + ")");
    }
    File file = new File(image_directory, product_id + "-ql.jpg");
    try {
        ImageIO.write(image, "jpg", file);
        product.setQuicklookPath(file.getPath());
        product.setQuicklookSize(file.length());
    } catch (IOException e) {
        logger.error("Cannot save quicklook.", e);
    }

    // Thumbnail
    int thumbnail_width = cfgManager.getProductConfiguration().getThumbnailConfiguration().getWidth();
    int thumbnail_height = cfgManager.getProductConfiguration().getThumbnailConfiguration().getHeight();
    boolean thumbnail_cutting = cfgManager.getProductConfiguration().getThumbnailConfiguration().isCutting();

    logger.info("Generating Thumbnail " + thumbnail_width + "x" + thumbnail_height + " from "
            + input_image.getWidth() + "x" + input_image.getHeight() + " image.");

    image = ProcessingUtils.ResizeImage(input_image, thumbnail_width, thumbnail_height, 10f, thumbnail_cutting);

    // Manages the quicklook output
    file = new File(image_directory, product_id + "-th.jpg");
    try {
        ImageIO.write(image, "jpg", file);
        product.setThumbnailPath(file.getPath());
        product.setThumbnailSize(file.length());
    } catch (IOException e) {
        logger.error("Cannot save thumbnail.", e);
    }
    SdiImageFactory.close(input_list);
    try {
        lock.close();
    } catch (IOException e) {
    }
}

From source file:fr.gael.dhus.datastore.processing.ProcessingManager.java

/**
 * Loads product images from Drb node and stores information inside the
 * product before returning it//from  w  w  w .ja  va  2  s  .  co  m
 */
private Product extractImages(DrbNode productNode, Product product) {
    if (ImageIO.getUseCache())
        ImageIO.setUseCache(false);

    if (!ImageFactory.isImage(productNode)) {
        LOGGER.debug("No Image.");
        return product;
    }

    RenderedImageList input_list = null;
    RenderedImage input_image = null;
    try {
        input_list = ImageFactory.createImage(productNode);
        input_image = RenderingFactory.createDefaultRendering(input_list);
    } catch (Exception e) {
        LOGGER.debug("Cannot retrieve default rendering");
        if (LOGGER.isDebugEnabled()) {
            LOGGER.debug("Error occurs during rendered image reader", e);
        }

        if (input_list == null) {
            return product;
        }
        input_image = input_list;
    }

    if (input_image == null) {
        return product;
    }

    // Generate Quicklook
    int quicklook_width = cfgManager.getProductConfiguration().getQuicklookConfiguration().getWidth();
    int quicklook_height = cfgManager.getProductConfiguration().getQuicklookConfiguration().getHeight();
    boolean quicklook_cutting = cfgManager.getProductConfiguration().getQuicklookConfiguration().isCutting();

    LOGGER.info("Generating Quicklook " + quicklook_width + "x" + quicklook_height + " from "
            + input_image.getWidth() + "x" + input_image.getHeight());

    RenderedImage image = ProcessingUtils.resizeImage(input_image, quicklook_width, quicklook_height, 10f,
            quicklook_cutting);

    // Manages the quicklook output
    File image_directory = incomingManager.getNewIncomingPath();

    AsyncFileLock afl = null;
    try {
        Path path = Paths.get(image_directory.getAbsolutePath(), ".lock-writing");
        afl = new AsyncFileLock(path);
        afl.obtain(900000);
    } catch (IOException | InterruptedException | TimeoutException e) {
        LOGGER.warn("Cannot lock incoming directory - continuing without (" + e.getMessage() + ")");
    }
    String identifier = product.getIdentifier();
    File file = new File(image_directory, identifier + "-ql.jpg");
    try {
        if (ImageIO.write(image, "jpg", file)) {
            product.setQuicklookPath(file.getPath());
            product.setQuicklookSize(file.length());
        }
    } catch (IOException e) {
        LOGGER.error("Cannot save quicklook.", e);
    }

    // Generate Thumbnail
    int thumbnail_width = cfgManager.getProductConfiguration().getThumbnailConfiguration().getWidth();
    int thumbnail_height = cfgManager.getProductConfiguration().getThumbnailConfiguration().getHeight();
    boolean thumbnail_cutting = cfgManager.getProductConfiguration().getThumbnailConfiguration().isCutting();

    LOGGER.info("Generating Thumbnail " + thumbnail_width + "x" + thumbnail_height + " from "
            + input_image.getWidth() + "x" + input_image.getHeight() + " image.");

    image = ProcessingUtils.resizeImage(input_image, thumbnail_width, thumbnail_height, 10f, thumbnail_cutting);

    // Manages the thumbnail output
    file = new File(image_directory, identifier + "-th.jpg");
    try {
        if (ImageIO.write(image, "jpg", file)) {
            product.setThumbnailPath(file.getPath());
            product.setThumbnailSize(file.length());
        }
    } catch (IOException e) {
        LOGGER.error("Cannot save thumbnail.", e);
    }
    SdiImageFactory.close(input_list);
    if (afl != null) {
        afl.close();
    }
    return product;
}

From source file:org.geotools.gce.imagemosaic.GranuleDescriptor.java

private void init(final BoundingBox granuleBBOX, final URL granuleUrl, final ImageReaderSpi suggestedSPI,
        final MultiLevelROI roiProvider, final boolean heterogeneousGranules,
        final boolean handleArtifactsFiltering, final Hints hints) {
    this.granuleBBOX = ReferencedEnvelope.reference(granuleBBOX);
    this.granuleUrl = granuleUrl;
    this.roiProvider = roiProvider;
    this.handleArtifactsFiltering = handleArtifactsFiltering;
    filterMe = handleArtifactsFiltering && roiProvider != null;

    // create the base grid to world transformation
    ImageInputStream inStream = null;
    ImageReader reader = null;/*from w ww.  ja v a2 s  . c o  m*/
    try {
        //
        //get info about the raster we have to read
        //

        // get a stream
        if (cachedStreamSPI == null) {
            cachedStreamSPI = ImageIOExt.getImageInputStreamSPI(granuleUrl, true);
            if (cachedStreamSPI == null) {
                final File file = DataUtilities.urlToFile(granuleUrl);
                if (file != null) {
                    if (LOGGER.isLoggable(Level.WARNING)) {
                        LOGGER.log(Level.WARNING, Utils.getFileInfo(file));
                    }
                }
                throw new IllegalArgumentException(
                        "Unable to get an input stream for the provided granule " + granuleUrl.toString());
            }
        }
        assert cachedStreamSPI != null : "no cachedStreamSPI available!";
        inStream = cachedStreamSPI.createInputStreamInstance(granuleUrl, ImageIO.getUseCache(),
                ImageIO.getCacheDirectory());
        if (inStream == null) {
            final File file = DataUtilities.urlToFile(granuleUrl);
            if (file != null) {
                if (LOGGER.isLoggable(Level.WARNING)) {
                    LOGGER.log(Level.WARNING, Utils.getFileInfo(file));
                }
            }
            throw new IllegalArgumentException(
                    "Unable to get an input stream for the provided file " + granuleUrl.toString());
        }

        // get a reader and try to cache the suggested SPI first
        if (cachedReaderSPI == null) {
            inStream.mark();
            if (suggestedSPI != null && suggestedSPI.canDecodeInput(inStream)) {
                cachedReaderSPI = suggestedSPI;
                inStream.reset();
            } else {
                inStream.mark();
                reader = ImageIOExt.getImageioReader(inStream);
                if (reader != null)
                    cachedReaderSPI = reader.getOriginatingProvider();
                inStream.reset();
            }

        }
        if (reader == null) {
            if (cachedReaderSPI == null) {
                throw new IllegalArgumentException(
                        "Unable to get a ReaderSPI for the provided input: " + granuleUrl.toString());
            }
            reader = cachedReaderSPI.createReaderInstance();
        }

        if (reader == null)
            throw new IllegalArgumentException(
                    "Unable to get an ImageReader for the provided file " + granuleUrl.toString());
        boolean ignoreMetadata = customizeReaderInitialization(reader, hints);
        reader.setInput(inStream, false, ignoreMetadata);
        //get selected level and base level dimensions
        final Rectangle originalDimension = Utils.getDimension(0, reader);

        // build the g2W for this tile, in principle we should get it
        // somehow from the tile itself or from the index, but at the moment
        // we do not have such info, hence we assume that it is a simple
        // scale and translate
        this.geMapper = new GridToEnvelopeMapper(new GridEnvelope2D(originalDimension), granuleBBOX);
        geMapper.setPixelAnchor(PixelInCell.CELL_CENTER);//this is the default behavior but it is nice to write it down anyway
        this.baseGridToWorld = geMapper.createAffineTransform();

        // add the base level
        this.granuleLevels.put(Integer.valueOf(0),
                new GranuleOverviewLevelDescriptor(1, 1, originalDimension.width, originalDimension.height));

        ////////////////////// Setting overviewController ///////////////////////
        if (heterogeneousGranules) {
            // //
            //
            // Right now we are setting up overviewsController by assuming that
            // overviews are internal images as happens in TIFF images
            // We can improve this by leveraging on coverageReaders  
            //
            // //

            // Getting the first level descriptor
            final GranuleOverviewLevelDescriptor baseOverviewLevelDescriptor = granuleLevels.get(0);

            // Variables initialization
            final int numberOfOvervies = reader.getNumImages(true) - 1;
            final AffineTransform2D baseG2W = baseOverviewLevelDescriptor.getGridToWorldTransform();
            final int width = baseOverviewLevelDescriptor.getWidth();
            final int height = baseOverviewLevelDescriptor.getHeight();
            final double resX = AffineTransform2D.getScaleX0(baseG2W);
            final double resY = AffineTransform2D.getScaleY0(baseG2W);
            final double[] highestRes = new double[] { resX, resY };
            final double[][] overviewsResolution = new double[numberOfOvervies][2];

            // Populating overviews and initializing overviewsController
            for (int i = 0; i < numberOfOvervies; i++) {
                overviewsResolution[i][0] = (highestRes[0] * width) / reader.getWidth(i + 1);
                overviewsResolution[i][1] = (highestRes[1] * height) / reader.getHeight(i + 1);
            }
            overviewsController = new OverviewsController(highestRes, numberOfOvervies, overviewsResolution);
        }
        //////////////////////////////////////////////////////////////////////////

        if (hints != null && hints.containsKey(Utils.CHECK_AUXILIARY_METADATA)) {
            boolean checkAuxiliaryMetadata = (Boolean) hints.get(Utils.CHECK_AUXILIARY_METADATA);
            if (checkAuxiliaryMetadata) {
                checkPamDataset();
            }
        }

    } catch (IllegalStateException e) {
        throw new IllegalArgumentException(e);

    } catch (IOException e) {
        throw new IllegalArgumentException(e);
    } finally {
        // close/dispose stream and readers
        try {
            if (inStream != null) {
                inStream.close();
            }
        } catch (Throwable e) {
            throw new IllegalArgumentException(e);
        } finally {
            if (reader != null) {
                reader.dispose();
            }
        }
    }
}

From source file:org.geotools.gce.imagemosaic.GranuleDescriptor.java

/**
* Load a specified a raster as a portion of the granule describe by this {@link GranuleDescriptor}.
* 
* @param imageReadParameters the {@link ImageReadParam} to use for reading.
* @param index the index to use for the {@link ImageReader}.
* @param cropBBox the bbox to use for cropping. 
* @param mosaicWorldToGrid the cropping grid to world transform.
* @param request the incoming request to satisfy.
* @param hints {@link Hints} to be used for creating this raster.
* @return a specified a raster as a portion of the granule describe by this {@link GranuleDescriptor}.
* @throws IOException in case an error occurs.
*///w ww.  j ava  2s .  c  om
public GranuleLoadingResult loadRaster(final ImageReadParam imageReadParameters, final int index,
        final ReferencedEnvelope cropBBox, final MathTransform2D mosaicWorldToGrid,
        final RasterLayerRequest request, final Hints hints) throws IOException {

    if (LOGGER.isLoggable(java.util.logging.Level.FINER)) {
        final String name = Thread.currentThread().getName();
        LOGGER.finer("Thread:" + name + " Loading raster data for granuleDescriptor " + this.toString());
    }
    ImageReadParam readParameters = null;
    int imageIndex;
    final boolean useFootprint = roiProvider != null
            && request.getFootprintBehavior() != FootprintBehavior.None;
    Geometry inclusionGeometry = useFootprint ? roiProvider.getFootprint() : null;
    final ReferencedEnvelope bbox = useFootprint
            ? new ReferencedEnvelope(granuleBBOX.intersection(inclusionGeometry.getEnvelopeInternal()),
                    granuleBBOX.getCoordinateReferenceSystem())
            : granuleBBOX;
    boolean doFiltering = false;
    if (filterMe && useFootprint) {
        doFiltering = Utils.areaIsDifferent(inclusionGeometry, baseGridToWorld, granuleBBOX);
    }

    // intersection of this tile bound with the current crop bbox
    final ReferencedEnvelope intersection = new ReferencedEnvelope(bbox.intersection(cropBBox),
            cropBBox.getCoordinateReferenceSystem());
    if (intersection.isEmpty()) {
        if (LOGGER.isLoggable(java.util.logging.Level.FINE)) {
            LOGGER.fine(new StringBuilder("Got empty intersection for granule ").append(this.toString())
                    .append(" with request ").append(request.toString())
                    .append(" Resulting in no granule loaded: Empty result").toString());
        }
        return null;
    }

    // check if the requested bbox intersects or overlaps the requested area 
    if (useFootprint && inclusionGeometry != null && !JTS.toGeometry(cropBBox).intersects(inclusionGeometry)) {
        if (LOGGER.isLoggable(java.util.logging.Level.FINE)) {
            LOGGER.fine(new StringBuilder("Got empty intersection for granule ").append(this.toString())
                    .append(" with request ").append(request.toString())
                    .append(" Resulting in no granule loaded: Empty result").toString());
        }
        return null;
    }

    ImageInputStream inStream = null;
    ImageReader reader = null;
    try {
        //
        //get info about the raster we have to read
        //

        // get a stream
        assert cachedStreamSPI != null : "no cachedStreamSPI available!";
        inStream = cachedStreamSPI.createInputStreamInstance(granuleUrl, ImageIO.getUseCache(),
                ImageIO.getCacheDirectory());
        if (inStream == null)
            return null;

        // get a reader and try to cache the relevant SPI
        if (cachedReaderSPI == null) {
            reader = ImageIOExt.getImageioReader(inStream);
            if (reader != null)
                cachedReaderSPI = reader.getOriginatingProvider();
        } else
            reader = cachedReaderSPI.createReaderInstance();
        if (reader == null) {
            if (LOGGER.isLoggable(java.util.logging.Level.WARNING)) {
                LOGGER.warning(new StringBuilder("Unable to get s reader for granuleDescriptor ")
                        .append(this.toString()).append(" with request ").append(request.toString())
                        .append(" Resulting in no granule loaded: Empty result").toString());
            }
            return null;
        }
        // set input
        customizeReaderInitialization(reader, hints);
        reader.setInput(inStream);

        // Checking for heterogeneous granules
        if (request.isHeterogeneousGranules()) {
            // create read parameters
            readParameters = new ImageReadParam();

            //override the overviews controller for the base layer
            imageIndex = ReadParamsController.setReadParams(
                    request.spatialRequestHelper.getRequestedResolution(), request.getOverviewPolicy(),
                    request.getDecimationPolicy(), readParameters, request.rasterManager, overviewsController);
        } else {
            imageIndex = index;
            readParameters = imageReadParameters;
        }

        //get selected level and base level dimensions
        final GranuleOverviewLevelDescriptor selectedlevel = getLevel(imageIndex, reader);

        // now create the crop grid to world which can be used to decide
        // which source area we need to crop in the selected level taking
        // into account the scale factors imposed by the selection of this
        // level together with the base level grid to world transformation
        AffineTransform2D cropWorldToGrid = new AffineTransform2D(selectedlevel.gridToWorldTransformCorner);
        cropWorldToGrid = (AffineTransform2D) cropWorldToGrid.inverse();
        // computing the crop source area which lives into the
        // selected level raster space, NOTICE that at the end we need to
        // take into account the fact that we might also decimate therefore
        // we cannot just use the crop grid to world but we need to correct
        // it.
        final Rectangle sourceArea = CRS.transform(cropWorldToGrid, intersection).toRectangle2D().getBounds();
        //gutter
        if (selectedlevel.baseToLevelTransform.isIdentity()) {
            sourceArea.grow(2, 2);
        }
        XRectangle2D.intersect(sourceArea, selectedlevel.rasterDimensions, sourceArea);//make sure roundings don't bother us
        // is it empty??
        if (sourceArea.isEmpty()) {
            if (LOGGER.isLoggable(java.util.logging.Level.FINE)) {
                LOGGER.fine("Got empty area for granuleDescriptor " + this.toString() + " with request "
                        + request.toString() + " Resulting in no granule loaded: Empty result");

            }
            return null;

        } else if (LOGGER.isLoggable(java.util.logging.Level.FINER)) {
            LOGGER.finer("Loading level " + imageIndex + " with source region: " + sourceArea + " subsampling: "
                    + readParameters.getSourceXSubsampling() + "," + readParameters.getSourceYSubsampling()
                    + " for granule:" + granuleUrl);
        }

        // Setting subsampling 
        int newSubSamplingFactor = 0;
        final String pluginName = cachedReaderSPI.getPluginClassName();
        if (pluginName != null && pluginName.equals(ImageUtilities.DIRECT_KAKADU_PLUGIN)) {
            final int ssx = readParameters.getSourceXSubsampling();
            final int ssy = readParameters.getSourceYSubsampling();
            newSubSamplingFactor = ImageIOUtilities.getSubSamplingFactor2(ssx, ssy);
            if (newSubSamplingFactor != 0) {
                if (newSubSamplingFactor > maxDecimationFactor && maxDecimationFactor != -1) {
                    newSubSamplingFactor = maxDecimationFactor;
                }
                readParameters.setSourceSubsampling(newSubSamplingFactor, newSubSamplingFactor, 0, 0);
            }
        }

        // set the source region
        readParameters.setSourceRegion(sourceArea);
        RenderedImage raster;
        try {
            // read
            raster = request.getReadType().read(readParameters, imageIndex, granuleUrl,
                    selectedlevel.rasterDimensions, reader, hints, false);

        } catch (Throwable e) {
            if (LOGGER.isLoggable(java.util.logging.Level.FINE)) {
                LOGGER.log(java.util.logging.Level.FINE,
                        "Unable to load raster for granuleDescriptor " + this.toString() + " with request "
                                + request.toString() + " Resulting in no granule loaded: Empty result",
                        e);
            }
            return null;
        }

        // use fixed source area
        sourceArea.setRect(readParameters.getSourceRegion());

        //
        // setting new coefficients to define a new affineTransformation
        // to be applied to the grid to world transformation
        // -----------------------------------------------------------------------------------
        //
        // With respect to the original envelope, the obtained planarImage
        // needs to be rescaled. The scaling factors are computed as the
        // ratio between the cropped source region sizes and the read
        // image sizes.
        //
        // place it in the mosaic using the coords created above;
        double decimationScaleX = ((1.0 * sourceArea.width) / raster.getWidth());
        double decimationScaleY = ((1.0 * sourceArea.height) / raster.getHeight());
        final AffineTransform decimationScaleTranform = XAffineTransform.getScaleInstance(decimationScaleX,
                decimationScaleY);

        // keep into account translation  to work into the selected level raster space
        final AffineTransform afterDecimationTranslateTranform = XAffineTransform
                .getTranslateInstance(sourceArea.x, sourceArea.y);

        // now we need to go back to the base level raster space
        final AffineTransform backToBaseLevelScaleTransform = selectedlevel.baseToLevelTransform;

        // now create the overall transform
        final AffineTransform finalRaster2Model = new AffineTransform(baseGridToWorld);
        finalRaster2Model.concatenate(CoverageUtilities.CENTER_TO_CORNER);

        if (!XAffineTransform.isIdentity(backToBaseLevelScaleTransform, Utils.AFFINE_IDENTITY_EPS))
            finalRaster2Model.concatenate(backToBaseLevelScaleTransform);
        if (!XAffineTransform.isIdentity(afterDecimationTranslateTranform, Utils.AFFINE_IDENTITY_EPS))
            finalRaster2Model.concatenate(afterDecimationTranslateTranform);
        if (!XAffineTransform.isIdentity(decimationScaleTranform, Utils.AFFINE_IDENTITY_EPS))
            finalRaster2Model.concatenate(decimationScaleTranform);

        // adjust roi
        if (useFootprint) {

            ROIGeometry transformed;
            try {
                transformed = roiProvider.getTransformedROI(finalRaster2Model.createInverse());
                if (transformed.getAsGeometry().isEmpty()) {
                    // inset might have killed the geometry fully
                    return null;
                }

                PlanarImage pi = PlanarImage.wrapRenderedImage(raster);
                if (!transformed.intersects(pi.getBounds())) {
                    return null;
                }
                pi.setProperty("ROI", transformed);
                raster = pi;

            } catch (NoninvertibleTransformException e) {
                if (LOGGER.isLoggable(java.util.logging.Level.INFO))
                    LOGGER.info("Unable to create a granuleDescriptor " + this.toString()
                            + " due to a problem when managing the ROI");
                return null;
            }

        }
        // keep into account translation factors to place this tile
        finalRaster2Model.preConcatenate((AffineTransform) mosaicWorldToGrid);
        final Interpolation interpolation = request.getInterpolation();

        //paranoiac check to avoid that JAI freaks out when computing its internal layouT on images that are too small
        Rectangle2D finalLayout = ImageUtilities.layoutHelper(raster, (float) finalRaster2Model.getScaleX(),
                (float) finalRaster2Model.getScaleY(), (float) finalRaster2Model.getTranslateX(),
                (float) finalRaster2Model.getTranslateY(), interpolation);
        if (finalLayout.isEmpty()) {
            if (LOGGER.isLoggable(java.util.logging.Level.INFO))
                LOGGER.info("Unable to create a granuleDescriptor " + this.toString()
                        + " due to jai scale bug creating a null source area");
            return null;
        }

        // apply the affine transform  conserving indexed color model
        final RenderingHints localHints = new RenderingHints(JAI.KEY_REPLACE_INDEX_COLOR_MODEL,
                interpolation instanceof InterpolationNearest ? Boolean.FALSE : Boolean.TRUE);
        if (XAffineTransform.isIdentity(finalRaster2Model, Utils.AFFINE_IDENTITY_EPS)) {
            return new GranuleLoadingResult(raster, null, granuleUrl, doFiltering, pamDataset);
        } else {
            //
            // In case we are asked to use certain tile dimensions we tile
            // also at this stage in case the read type is Direct since
            // buffered images comes up untiled and this can affect the
            // performances of the subsequent affine operation.
            //
            final Dimension tileDimensions = request.getTileDimensions();
            if (tileDimensions != null && request.getReadType().equals(ReadType.DIRECT_READ)) {
                final ImageLayout layout = new ImageLayout();
                layout.setTileHeight(tileDimensions.width).setTileWidth(tileDimensions.height);
                localHints.add(new RenderingHints(JAI.KEY_IMAGE_LAYOUT, layout));
            } else {
                if (hints != null && hints.containsKey(JAI.KEY_IMAGE_LAYOUT)) {
                    final Object layout = hints.get(JAI.KEY_IMAGE_LAYOUT);
                    if (layout != null && layout instanceof ImageLayout) {
                        localHints
                                .add(new RenderingHints(JAI.KEY_IMAGE_LAYOUT, ((ImageLayout) layout).clone()));
                    }
                }
            }
            if (hints != null && hints.containsKey(JAI.KEY_TILE_CACHE)) {
                final Object cache = hints.get(JAI.KEY_TILE_CACHE);
                if (cache != null && cache instanceof TileCache)
                    localHints.add(new RenderingHints(JAI.KEY_TILE_CACHE, (TileCache) cache));
            }
            if (hints != null && hints.containsKey(JAI.KEY_TILE_SCHEDULER)) {
                final Object scheduler = hints.get(JAI.KEY_TILE_SCHEDULER);
                if (scheduler != null && scheduler instanceof TileScheduler)
                    localHints.add(new RenderingHints(JAI.KEY_TILE_SCHEDULER, (TileScheduler) scheduler));
            }
            boolean addBorderExtender = true;
            if (hints != null && hints.containsKey(JAI.KEY_BORDER_EXTENDER)) {
                final Object extender = hints.get(JAI.KEY_BORDER_EXTENDER);
                if (extender != null && extender instanceof BorderExtender) {
                    localHints.add(new RenderingHints(JAI.KEY_BORDER_EXTENDER, (BorderExtender) extender));
                    addBorderExtender = false;
                }
            }
            // BORDER extender
            if (addBorderExtender) {
                localHints.add(ImageUtilities.BORDER_EXTENDER_HINTS);
            }

            ImageWorker iw = new ImageWorker(raster);
            iw.setRenderingHints(localHints);
            iw.affine(finalRaster2Model, interpolation, request.getBackgroundValues());
            return new GranuleLoadingResult(iw.getRenderedImage(), null, granuleUrl, doFiltering, pamDataset);
        }

    } catch (IllegalStateException e) {
        if (LOGGER.isLoggable(java.util.logging.Level.WARNING)) {
            LOGGER.log(java.util.logging.Level.WARNING,
                    new StringBuilder("Unable to load raster for granuleDescriptor ").append(this.toString())
                            .append(" with request ").append(request.toString())
                            .append(" Resulting in no granule loaded: Empty result").toString(),
                    e);
        }
        return null;
    } catch (org.opengis.referencing.operation.NoninvertibleTransformException e) {
        if (LOGGER.isLoggable(java.util.logging.Level.WARNING)) {
            LOGGER.log(java.util.logging.Level.WARNING,
                    new StringBuilder("Unable to load raster for granuleDescriptor ").append(this.toString())
                            .append(" with request ").append(request.toString())
                            .append(" Resulting in no granule loaded: Empty result").toString(),
                    e);
        }
        return null;
    } catch (TransformException e) {
        if (LOGGER.isLoggable(java.util.logging.Level.WARNING)) {
            LOGGER.log(java.util.logging.Level.WARNING,
                    new StringBuilder("Unable to load raster for granuleDescriptor ").append(this.toString())
                            .append(" with request ").append(request.toString())
                            .append(" Resulting in no granule loaded: Empty result").toString(),
                    e);
        }
        return null;

    } finally {
        try {
            if (request.getReadType() != ReadType.JAI_IMAGEREAD && inStream != null) {
                inStream.close();
            }
        } finally {
            if (request.getReadType() != ReadType.JAI_IMAGEREAD && reader != null) {
                reader.dispose();
            }
        }
    }
}

From source file:org.geotools.gce.imagemosaic.GranuleDescriptor.java

GranuleOverviewLevelDescriptor getLevel(final int index) {

    //load level// w w  w . j a v  a 2 s.co m
    // create the base grid to world transformation
    ImageInputStream inStream = null;
    ImageReader reader = null;
    try {

        // get a stream
        assert cachedStreamSPI != null : "no cachedStreamSPI available!";
        inStream = cachedStreamSPI.createInputStreamInstance(granuleUrl, ImageIO.getUseCache(),
                ImageIO.getCacheDirectory());
        if (inStream == null)
            throw new IllegalArgumentException("Unable to create an inputstream for the granuleurl:"
                    + (granuleUrl != null ? granuleUrl : "null"));

        // get a reader and try to cache the relevant SPI
        if (cachedReaderSPI == null) {
            reader = ImageIOExt.getImageioReader(inStream);
            if (reader != null)
                cachedReaderSPI = reader.getOriginatingProvider();
        } else
            reader = cachedReaderSPI.createReaderInstance();
        if (reader == null)
            throw new IllegalArgumentException(
                    "Unable to get an ImageReader for the provided file " + granuleUrl.toString());
        final boolean ignoreMetadata = customizeReaderInitialization(reader, null);
        reader.setInput(inStream, false, ignoreMetadata);

        // call internal method which will close everything
        return getLevel(index, reader);

    } catch (IllegalStateException e) {

        // clean up
        try {
            if (inStream != null)
                inStream.close();
        } catch (Throwable ee) {

        } finally {
            if (reader != null)
                reader.dispose();
        }

        throw new IllegalArgumentException(e);

    } catch (IOException e) {

        // clean up
        try {
            if (inStream != null)
                inStream.close();
        } catch (Throwable ee) {
        } finally {
            if (reader != null)
                reader.dispose();
        }

        throw new IllegalArgumentException(e);
    }
}