Examples with SampleModel java.awt.image.SampleModel used on opensource projects

Example 71 with SampleModel

use of java.awt.image.SampleModel in project imageio-ext by geosolutions-it.

the class EmptyImage method prepareWriteEmpty.

public void prepareWriteEmpty(IIOMetadata streamMetadata, ImageTypeSpecifier imageType, int width, int height, IIOMetadata imageMetadata, List thumbnails, ImageWriteParam param) throws IOException {
    checkParamsEmpty(imageType, width, height, thumbnails);
    this.isWritingEmpty = true;
    SampleModel emptySM = imageType.getSampleModel();
    RenderedImage emptyImage = new EmptyImage(0, 0, width, height, 0, 0, emptySM.getWidth(), emptySM.getHeight(), emptySM, imageType.getColorModel());
    write(streamMetadata, new IIOImage(emptyImage, null, imageMetadata), param, true, false);
}

Example 72 with SampleModel

use of java.awt.image.SampleModel in project imageio-ext by geosolutions-it.

the class EmptyImage method replacePixels.

public void replacePixels(RenderedImage image, ImageWriteParam param) throws IOException {
    synchronized (replacePixelsLock) {
        // Check state and parameters vis-a-vis ImageWriter specification.
        if (stream == null) {
            throw new IllegalStateException("stream == null!");
        }
        if (image == null) {
            throw new IllegalArgumentException("image == null!");
        }
        if (!inReplacePixelsNest) {
            throw new IllegalStateException("No previous call to prepareReplacePixels!");
        }
        // Subsampling values.
        int stepX = 1, stepY = 1, gridX = 0, gridY = 0;
        // Initialize the ImageWriteParam.
        if (param == null) {
            // Use the default.
            param = getDefaultWriteParam();
        } else {
            // Make a copy of the ImageWriteParam.
            ImageWriteParam paramCopy = getDefaultWriteParam();
            // Force uncompressed.
            paramCopy.setCompressionMode(ImageWriteParam.MODE_DISABLED);
            // Force tiling to remain as in the already written image.
            paramCopy.setTilingMode(ImageWriteParam.MODE_COPY_FROM_METADATA);
            // Retain source and destination region and band settings.
            paramCopy.setDestinationOffset(param.getDestinationOffset());
            paramCopy.setSourceBands(param.getSourceBands());
            paramCopy.setSourceRegion(param.getSourceRegion());
            // Save original subsampling values for subsampling the
            // replacement data - not the data re-read from the image.
            stepX = param.getSourceXSubsampling();
            stepY = param.getSourceYSubsampling();
            gridX = param.getSubsamplingXOffset();
            gridY = param.getSubsamplingYOffset();
            // Replace the param.
            param = paramCopy;
        }
        // Check band count and bit depth compatibility.
        TIFFField f = replacePixelsMetadata.getTIFFField(BaselineTIFFTagSet.TAG_BITS_PER_SAMPLE);
        if (f == null) {
            throw new IIOException("Cannot read destination BitsPerSample");
        }
        int[] dstBitsPerSample = f.getAsInts();
        int[] srcBitsPerSample = image.getSampleModel().getSampleSize();
        int[] sourceBands = param.getSourceBands();
        if (sourceBands != null) {
            if (sourceBands.length != dstBitsPerSample.length) {
                throw new IIOException("Source and destination have different SamplesPerPixel");
            }
            for (int i = 0; i < sourceBands.length; i++) {
                if (dstBitsPerSample[i] != srcBitsPerSample[sourceBands[i]]) {
                    throw new IIOException("Source and destination have different BitsPerSample");
                }
            }
        } else {
            int srcNumBands = image.getSampleModel().getNumBands();
            if (srcNumBands != dstBitsPerSample.length) {
                throw new IIOException("Source and destination have different SamplesPerPixel");
            }
            for (int i = 0; i < srcNumBands; i++) {
                if (dstBitsPerSample[i] != srcBitsPerSample[i]) {
                    throw new IIOException("Source and destination have different BitsPerSample");
                }
            }
        }
        // Get the source image bounds.
        Rectangle srcImageBounds = new Rectangle(image.getMinX(), image.getMinY(), image.getWidth(), image.getHeight());
        // Initialize the source rect.
        Rectangle srcRect = param.getSourceRegion();
        if (srcRect == null) {
            srcRect = srcImageBounds;
        }
        // Set subsampling grid parameters.
        int subPeriodX = stepX;
        int subPeriodY = stepY;
        int subOriginX = gridX + srcRect.x;
        int subOriginY = gridY + srcRect.y;
        // Intersect with the source bounds.
        if (!srcRect.equals(srcImageBounds)) {
            srcRect = srcRect.intersection(srcImageBounds);
            if (srcRect.isEmpty()) {
                throw new IllegalArgumentException("Source region does not intersect source image!");
            }
        }
        // Get the destination offset.
        Point dstOffset = param.getDestinationOffset();
        // Forward map source rectangle to determine destination width.
        int dMinX = XToTileX(srcRect.x, subOriginX, subPeriodX) + dstOffset.x;
        int dMinY = YToTileY(srcRect.y, subOriginY, subPeriodY) + dstOffset.y;
        int dMaxX = XToTileX(srcRect.x + srcRect.width, subOriginX, subPeriodX) + dstOffset.x;
        int dMaxY = YToTileY(srcRect.y + srcRect.height, subOriginY, subPeriodY) + dstOffset.y;
        // Initialize the destination rectangle.
        Rectangle dstRect = new Rectangle(dstOffset.x, dstOffset.y, dMaxX - dMinX, dMaxY - dMinY);
        // Intersect with the replacement region.
        dstRect = dstRect.intersection(replacePixelsRegion);
        if (dstRect.isEmpty()) {
            throw new IllegalArgumentException("Forward mapped source region does not intersect destination region!");
        }
        // Backward map to the active source region.
        int activeSrcMinX = (dstRect.x - dstOffset.x) * subPeriodX + subOriginX;
        int sxmax = (dstRect.x + dstRect.width - 1 - dstOffset.x) * subPeriodX + subOriginX;
        int activeSrcWidth = sxmax - activeSrcMinX + 1;
        int activeSrcMinY = (dstRect.y - dstOffset.y) * subPeriodY + subOriginY;
        int symax = (dstRect.y + dstRect.height - 1 - dstOffset.y) * subPeriodY + subOriginY;
        int activeSrcHeight = symax - activeSrcMinY + 1;
        Rectangle activeSrcRect = new Rectangle(activeSrcMinX, activeSrcMinY, activeSrcWidth, activeSrcHeight);
        if (activeSrcRect.intersection(srcImageBounds).isEmpty()) {
            throw new IllegalArgumentException("Backward mapped destination region does not intersect source image!");
        }
        if (reader == null) {
            reader = new TIFFImageReader(new TIFFImageReaderSpi());
        } else {
            reader.reset();
        }
        stream.mark();
        try {
            stream.seek(headerPosition);
            reader.setInput(stream);
            this.imageMetadata = replacePixelsMetadata;
            this.param = param;
            SampleModel sm = image.getSampleModel();
            ColorModel cm = image.getColorModel();
            this.numBands = sm.getNumBands();
            this.imageType = new ImageTypeSpecifier(image);
            this.periodX = param.getSourceXSubsampling();
            this.periodY = param.getSourceYSubsampling();
            this.sourceBands = null;
            int[] sBands = param.getSourceBands();
            if (sBands != null) {
                this.sourceBands = sBands;
                this.numBands = sourceBands.length;
            }
            setupMetadata(cm, sm, reader.getWidth(replacePixelsIndex), reader.getHeight(replacePixelsIndex));
            int[] scaleSampleSize = sm.getSampleSize();
            initializeScaleTables(scaleSampleSize);
            // Determine whether bilevel.
            this.isBilevel = ImageUtil.isBinary(image.getSampleModel());
            // Check for photometric inversion.
            this.isInverted = (nativePhotometricInterpretation == BaselineTIFFTagSet.PHOTOMETRIC_INTERPRETATION_BLACK_IS_ZERO && photometricInterpretation == BaselineTIFFTagSet.PHOTOMETRIC_INTERPRETATION_WHITE_IS_ZERO) || (nativePhotometricInterpretation == BaselineTIFFTagSet.PHOTOMETRIC_INTERPRETATION_WHITE_IS_ZERO && photometricInterpretation == BaselineTIFFTagSet.PHOTOMETRIC_INTERPRETATION_BLACK_IS_ZERO);
            // Analyze image data suitability for direct copy.
            this.isImageSimple = (isBilevel || (!isInverted && ImageUtil.imageIsContiguous(image))) && // no value rescaling
            !isRescaling && // no subbanding
            sourceBands == null && periodX == 1 && // no subsampling
            periodY == 1 && colorConverter == null;
            int minTileX = XToTileX(dstRect.x, 0, tileWidth);
            int minTileY = YToTileY(dstRect.y, 0, tileLength);
            int maxTileX = XToTileX(dstRect.x + dstRect.width - 1, 0, tileWidth);
            int maxTileY = YToTileY(dstRect.y + dstRect.height - 1, 0, tileLength);
            TIFFCompressor encoder = new TIFFNullCompressor();
            encoder.setWriter(this);
            encoder.setStream(stream);
            encoder.setMetadata(this.imageMetadata);
            Rectangle tileRect = new Rectangle();
            for (int ty = minTileY; ty <= maxTileY; ty++) {
                for (int tx = minTileX; tx <= maxTileX; tx++) {
                    int tileIndex = ty * tilesAcross + tx;
                    boolean isEmpty = replacePixelsByteCounts[tileIndex] == 0L;
                    WritableRaster raster;
                    if (isEmpty) {
                        SampleModel tileSM = sm.createCompatibleSampleModel(tileWidth, tileLength);
                        raster = Raster.createWritableRaster(tileSM, null);
                    } else {
                        BufferedImage tileImage = reader.readTile(replacePixelsIndex, tx, ty);
                        raster = tileImage.getRaster();
                    }
                    tileRect.setLocation(tx * tileWidth, ty * tileLength);
                    tileRect.setSize(raster.getWidth(), raster.getHeight());
                    raster = raster.createWritableTranslatedChild(tileRect.x, tileRect.y);
                    Rectangle replacementRect = tileRect.intersection(dstRect);
                    int srcMinX = (replacementRect.x - dstOffset.x) * subPeriodX + subOriginX;
                    int srcXmax = (replacementRect.x + replacementRect.width - 1 - dstOffset.x) * subPeriodX + subOriginX;
                    int srcWidth = srcXmax - srcMinX + 1;
                    int srcMinY = (replacementRect.y - dstOffset.y) * subPeriodY + subOriginY;
                    int srcYMax = (replacementRect.y + replacementRect.height - 1 - dstOffset.y) * subPeriodY + subOriginY;
                    int srcHeight = srcYMax - srcMinY + 1;
                    Rectangle srcTileRect = new Rectangle(srcMinX, srcMinY, srcWidth, srcHeight);
                    Raster replacementData = image.getData(srcTileRect);
                    if (subPeriodX == 1 && subPeriodY == 1 && subOriginX == 0 && subOriginY == 0) {
                        replacementData = replacementData.createChild(srcTileRect.x, srcTileRect.y, srcTileRect.width, srcTileRect.height, replacementRect.x, replacementRect.y, sourceBands);
                    } else {
                        replacementData = subsample(replacementData, sourceBands, subOriginX, subOriginY, subPeriodX, subPeriodY, dstOffset.x, dstOffset.y, replacementRect);
                        if (replacementData == null) {
                            continue;
                        }
                    }
                    raster.setRect(replacementData);
                    if (isEmpty) {
                        stream.seek(nextSpace);
                    } else {
                        stream.seek(replacePixelsTileOffsets[tileIndex]);
                    }
                    this.image = new SingleTileRenderedImage(raster, cm);
                    int numBytes = writeTile(tileRect, encoder);
                    if (isEmpty) {
                        // Update Strip/TileOffsets and
                        // Strip/TileByteCounts fields.
                        stream.mark();
                        stream.seek(replacePixelsOffsetsPosition + 4 * tileIndex);
                        stream.writeInt((int) nextSpace);
                        stream.seek(replacePixelsByteCountsPosition + 4 * tileIndex);
                        stream.writeInt(numBytes);
                        stream.reset();
                        // Increment location of next available space.
                        nextSpace += numBytes;
                    }
                }
            }
        } catch (IOException e) {
            throw e;
        } finally {
            stream.reset();
        }
    }
}

Example 73 with SampleModel

use of java.awt.image.SampleModel in project imageio-ext by geosolutions-it.

the class PNMImageWriter method write.

public void write(IIOMetadata streamMetadata, IIOImage image, ImageWriteParam param) throws IOException {
    clearAbortRequest();
    processImageStarted(0);
    if (param == null)
        param = getDefaultWriteParam();
    RenderedImage input = null;
    Raster inputRaster = null;
    boolean writeRaster = image.hasRaster();
    Rectangle sourceRegion = param.getSourceRegion();
    SampleModel sampleModel = null;
    ColorModel colorModel = null;
    if (writeRaster) {
        inputRaster = image.getRaster();
        sampleModel = inputRaster.getSampleModel();
        if (sourceRegion == null)
            sourceRegion = inputRaster.getBounds();
        else
            sourceRegion = sourceRegion.intersection(inputRaster.getBounds());
    } else {
        input = image.getRenderedImage();
        sampleModel = input.getSampleModel();
        colorModel = input.getColorModel();
        Rectangle rect = new Rectangle(input.getMinX(), input.getMinY(), input.getWidth(), input.getHeight());
        if (sourceRegion == null)
            sourceRegion = rect;
        else
            sourceRegion = sourceRegion.intersection(rect);
    }
    if (sourceRegion.isEmpty())
        throw new RuntimeException(I18N.getString("PNMImageWrite1"));
    ImageUtil.canEncodeImage(this, colorModel, sampleModel);
    int scaleX = param.getSourceXSubsampling();
    int scaleY = param.getSourceYSubsampling();
    int xOffset = param.getSubsamplingXOffset();
    int yOffset = param.getSubsamplingYOffset();
    sourceRegion.translate(xOffset, yOffset);
    sourceRegion.width -= xOffset;
    sourceRegion.height -= yOffset;
    int w = (sourceRegion.width + scaleX - 1) / scaleX;
    int h = (sourceRegion.height + scaleY - 1) / scaleY;
    int tileWidth = sampleModel.getWidth();
    // Raw data can only handle bytes, everything greater must be ASCII.
    int[] sampleSize = sampleModel.getSampleSize();
    int[] sourceBands = param.getSourceBands();
    int numBands = sampleModel.getNumBands();
    if (sourceBands != null) {
        sampleModel = sampleModel.createSubsetSampleModel(sourceBands);
        colorModel = null;
        numBands = sampleModel.getNumBands();
    } else {
        sourceBands = new int[numBands];
        for (int i = 0; i < numBands; i++) sourceBands[i] = i;
    }
    // Colormap populated for non-bilevel IndexColorModel only.
    byte[] reds = null;
    byte[] greens = null;
    byte[] blues = null;
    // Flag indicating that PB data should be inverted before writing.
    boolean isPBMInverted = false;
    if (numBands == 1) {
        if (colorModel instanceof IndexColorModel) {
            IndexColorModel icm = (IndexColorModel) colorModel;
            int mapSize = icm.getMapSize();
            if (mapSize < (1 << sampleSize[0]))
                throw new RuntimeException(I18N.getString("PNMImageWrite2"));
            if (sampleSize[0] == 1) {
                variant = PBM_RAW;
                // Set PBM inversion flag if 1 maps to a higher color
                // value than 0: PBM expects white-is-zero so if this
                // does not obtain then inversion needs to occur.
                isPBMInverted = icm.getRed(1) > icm.getRed(0);
            } else {
                variant = PPM_RAW;
                reds = new byte[mapSize];
                greens = new byte[mapSize];
                blues = new byte[mapSize];
                icm.getReds(reds);
                icm.getGreens(greens);
                icm.getBlues(blues);
            }
        } else if (sampleSize[0] == 1) {
            variant = PBM_RAW;
        } else if (sampleSize[0] <= 8) {
            variant = PGM_RAW;
        } else {
            variant = PGM_ASCII;
        }
    } else if (numBands == 3) {
        if (sampleSize[0] <= 8 && sampleSize[1] <= 8 && sampleSize[2] <= 8) {
            // all 3 bands must be <= 8
            variant = PPM_RAW;
        } else {
            variant = PPM_ASCII;
        }
    } else {
        throw new RuntimeException(I18N.getString("PNMImageWrite3"));
    }
    IIOMetadata inputMetadata = image.getMetadata();
    ImageTypeSpecifier imageType;
    if (colorModel != null) {
        imageType = new ImageTypeSpecifier(colorModel, sampleModel);
    } else {
        int dataType = sampleModel.getDataType();
        switch(numBands) {
            case 1:
                imageType = ImageTypeSpecifier.createGrayscale(sampleSize[0], dataType, false);
                break;
            case 3:
                ColorSpace cs = ColorSpace.getInstance(ColorSpace.CS_sRGB);
                imageType = ImageTypeSpecifier.createInterleaved(cs, new int[] { 0, 1, 2 }, dataType, false, false);
                break;
            default:
                throw new IIOException("Cannot encode image with " + numBands + " bands!");
        }
    }
    PNMMetadata metadata;
    if (inputMetadata != null) {
        // Convert metadata.
        metadata = (PNMMetadata) convertImageMetadata(inputMetadata, imageType, param);
    } else {
        // Use default.
        metadata = (PNMMetadata) getDefaultImageMetadata(imageType, param);
    }
    // Read parameters
    boolean isRawPNM;
    if (param instanceof PNMImageWriteParam) {
        isRawPNM = ((PNMImageWriteParam) param).getRaw();
    } else {
        isRawPNM = metadata.isRaw();
    }
    maxValue = metadata.getMaxValue();
    for (int i = 0; i < sampleSize.length; i++) {
        int v = (1 << sampleSize[i]) - 1;
        if (v > maxValue) {
            maxValue = v;
        }
    }
    if (isRawPNM) {
        // Raw output is desired.
        int maxBitDepth = metadata.getMaxBitDepth();
        if (!isRaw(variant) && maxBitDepth <= 8) {
            // Current variant is ASCII and the bit depth is acceptable
            // so convert to RAW variant by adding '3' to variant.
            variant += 0x3;
        } else if (isRaw(variant) && maxBitDepth > 8) {
            // Current variant is RAW and the bit depth it too large for
            // RAW so convert to ASCII.
            variant -= 0x3;
        }
    // Omitted cases are (variant == RAW && max <= 8) and
    // (variant == ASCII && max > 8) neither of which requires action.
    } else if (isRaw(variant)) {
        // Raw output is NOT desired so convert to ASCII
        variant -= 0x3;
    }
    // Write PNM file.
    // magic value: 'P'
    stream.writeByte('P');
    stream.writeByte(variant);
    stream.write(lineSeparator);
    // comment line
    stream.write(COMMENT.getBytes());
    // Write the comments provided in the metadata
    Iterator comments = metadata.getComments();
    if (comments != null) {
        while (comments.hasNext()) {
            stream.write(lineSeparator);
            String comment = "# " + (String) comments.next();
            stream.write(comment.getBytes());
        }
    }
    stream.write(lineSeparator);
    // width
    writeInteger(stream, w);
    stream.write(SPACE);
    // height
    writeInteger(stream, h);
    // Write sample max value for non-binary images
    if ((variant != PBM_RAW) && (variant != PBM_ASCII)) {
        stream.write(lineSeparator);
        writeInteger(stream, maxValue);
    }
    // last header value and the start of the raw data.
    if (variant == PBM_RAW || variant == PGM_RAW || variant == PPM_RAW) {
        stream.write('\n');
    }
    // Set flag for optimal image writing case: row-packed data with
    // correct band order if applicable.
    boolean writeOptimal = false;
    if (variant == PBM_RAW && sampleModel.getTransferType() == DataBuffer.TYPE_BYTE && sampleModel instanceof MultiPixelPackedSampleModel) {
        MultiPixelPackedSampleModel mppsm = (MultiPixelPackedSampleModel) sampleModel;
        int originX = 0;
        if (writeRaster)
            originX = inputRaster.getMinX();
        else
            originX = input.getMinX();
        // Must have left-aligned bytes with unity bit stride.
        if (mppsm.getBitOffset((sourceRegion.x - originX) % tileWidth) == 0 && mppsm.getPixelBitStride() == 1 && scaleX == 1)
            writeOptimal = true;
    } else if ((variant == PGM_RAW || variant == PPM_RAW) && sampleModel instanceof ComponentSampleModel && !(colorModel instanceof IndexColorModel)) {
        ComponentSampleModel csm = (ComponentSampleModel) sampleModel;
        // Pixel stride must equal band count.
        if (csm.getPixelStride() == numBands && scaleX == 1) {
            writeOptimal = true;
            // Band offsets must equal band indices.
            if (variant == PPM_RAW) {
                int[] bandOffsets = csm.getBandOffsets();
                for (int b = 0; b < numBands; b++) {
                    if (bandOffsets[b] != b) {
                        writeOptimal = false;
                        break;
                    }
                }
            }
        }
    }
    // Write using an optimal approach if possible.
    if (writeOptimal) {
        int bytesPerRow = variant == PBM_RAW ? (w + 7) / 8 : w * sampleModel.getNumBands();
        byte[] bdata = null;
        byte[] invertedData = new byte[bytesPerRow];
        // Loop over tiles to minimize cobbling.
        for (int j = 0; j < sourceRegion.height; j++) {
            if (abortRequested())
                break;
            Raster lineRaster = null;
            if (writeRaster) {
                lineRaster = inputRaster.createChild(sourceRegion.x, j, sourceRegion.width, 1, 0, 0, null);
            } else {
                lineRaster = input.getData(new Rectangle(sourceRegion.x, sourceRegion.y + j, w, 1));
                lineRaster = lineRaster.createTranslatedChild(0, 0);
            }
            bdata = ((DataBufferByte) lineRaster.getDataBuffer()).getData();
            sampleModel = lineRaster.getSampleModel();
            int offset = 0;
            if (sampleModel instanceof ComponentSampleModel) {
                offset = ((ComponentSampleModel) sampleModel).getOffset(lineRaster.getMinX() - lineRaster.getSampleModelTranslateX(), lineRaster.getMinY() - lineRaster.getSampleModelTranslateY());
            } else if (sampleModel instanceof MultiPixelPackedSampleModel) {
                offset = ((MultiPixelPackedSampleModel) sampleModel).getOffset(lineRaster.getMinX() - lineRaster.getSampleModelTranslateX(), lineRaster.getMinX() - lineRaster.getSampleModelTranslateY());
            }
            if (isPBMInverted) {
                for (int k = offset, m = 0; m < bytesPerRow; k++, m++) invertedData[m] = (byte) ~bdata[k];
                bdata = invertedData;
                offset = 0;
            }
            stream.write(bdata, offset, bytesPerRow);
            processImageProgress(100.0F * j / sourceRegion.height);
        }
        // Write all buffered bytes and return.
        stream.flush();
        if (abortRequested())
            processWriteAborted();
        else
            processImageComplete();
        return;
    }
    // Buffer for 1 rows of original pixels
    int size = sourceRegion.width * numBands;
    int[] pixels = new int[size];
    // Also allocate a buffer to hold the data to be written to the file,
    // so we can use array writes.
    byte[] bpixels = reds == null ? new byte[w * numBands] : new byte[w * 3];
    // The index of the sample being written, used to
    // place a line separator after every 16th sample in
    // ASCII mode.  Not used in raw mode.
    int count = 0;
    // Process line by line
    int lastRow = sourceRegion.y + sourceRegion.height;
    for (int row = sourceRegion.y; row < lastRow; row += scaleY) {
        if (abortRequested())
            break;
        // Grab the pixels
        Raster src = null;
        if (writeRaster)
            src = inputRaster.createChild(sourceRegion.x, row, sourceRegion.width, 1, sourceRegion.x, row, sourceBands);
        else
            src = input.getData(new Rectangle(sourceRegion.x, row, sourceRegion.width, 1));
        src.getPixels(sourceRegion.x, row, sourceRegion.width, 1, pixels);
        if (isPBMInverted)
            for (int i = 0; i < size; i += scaleX) bpixels[i] ^= 1;
        switch(variant) {
            case PBM_ASCII:
                for (int i = 0; i < size; i += scaleX) {
                    if ((count++ % 16) == 0)
                        stream.write(lineSeparator);
                    else
                        stream.write(SPACE);
                    writeInteger(stream, isPBMInverted ? (byte) ~pixels[i] : pixels[i]);
                }
                stream.write(lineSeparator);
                break;
            case PGM_ASCII:
                for (int i = 0; i < size; i += scaleX) {
                    if ((count++ % 16) == 0)
                        stream.write(lineSeparator);
                    else
                        stream.write(SPACE);
                    writeInteger(stream, pixels[i]);
                }
                stream.write(lineSeparator);
                break;
            case PPM_ASCII:
                if (reds == null) {
                    for (int i = 0; i < size; i += scaleX * numBands) {
                        for (int j = 0; j < numBands; j++) {
                            if ((count++ % 16) == 0)
                                stream.write(lineSeparator);
                            else
                                stream.write(SPACE);
                            writeInteger(stream, pixels[i + j]);
                        }
                    }
                } else {
                    for (int i = 0; i < size; i += scaleX) {
                        if ((count++ % 5) == 0)
                            stream.write(lineSeparator);
                        else
                            stream.write(SPACE);
                        writeInteger(stream, (reds[pixels[i]] & 0xFF));
                        stream.write(SPACE);
                        writeInteger(stream, (greens[pixels[i]] & 0xFF));
                        stream.write(SPACE);
                        writeInteger(stream, (blues[pixels[i]] & 0xFF));
                    }
                }
                stream.write(lineSeparator);
                break;
            case PBM_RAW:
                // 8 pixels packed into 1 byte, the leftovers are padded.
                int kdst = 0;
                int b = 0;
                int pos = 7;
                for (int i = 0; i < size; i += scaleX) {
                    b |= pixels[i] << pos;
                    pos--;
                    if (pos == -1) {
                        bpixels[kdst++] = (byte) b;
                        b = 0;
                        pos = 7;
                    }
                }
                if (pos != 7)
                    bpixels[kdst++] = (byte) b;
                stream.write(bpixels, 0, kdst);
                break;
            case PGM_RAW:
                for (int i = 0, j = 0; i < size; i += scaleX) {
                    bpixels[j++] = (byte) (pixels[i]);
                }
                stream.write(bpixels, 0, w);
                break;
            case PPM_RAW:
                if (reds == null) {
                    // no need to expand
                    for (int i = 0, k = 0; i < size; i += scaleX * numBands) {
                        for (int j = 0; j < numBands; j++) bpixels[k++] = (byte) (pixels[i + j] & 0xFF);
                    }
                } else {
                    for (int i = 0, j = 0; i < size; i += scaleX) {
                        bpixels[j++] = reds[pixels[i]];
                        bpixels[j++] = greens[pixels[i]];
                        bpixels[j++] = blues[pixels[i]];
                    }
                }
                stream.write(bpixels, 0, bpixels.length);
                break;
        }
        processImageProgress(100.0F * (row - sourceRegion.y) / sourceRegion.height);
    }
    // Force all buffered bytes to be written out.
    stream.flush();
    if (abortRequested())
        processWriteAborted();
    else
        processImageComplete();
}

Example 74 with SampleModel

use of java.awt.image.SampleModel in project imageio-ext by geosolutions-it.

the class PNMMetadata method initialize.

void initialize(ImageTypeSpecifier imageType, ImageWriteParam param) {
    ImageTypeSpecifier destType = null;
    if (param != null) {
        destType = param.getDestinationType();
        if (destType == null) {
            destType = imageType;
        }
    } else {
        destType = imageType;
    }
    if (destType != null) {
        SampleModel sm = destType.getSampleModel();
        int[] sampleSize = sm.getSampleSize();
        this.width = sm.getWidth();
        this.height = sm.getHeight();
        for (int i = 0; i < sampleSize.length; i++) {
            if (sampleSize[i] > maxSampleSize) {
                maxSampleSize = sampleSize[i];
            }
        }
        this.maxSample = (1 << maxSampleSize) - 1;
        // default value
        boolean isRaw = true;
        if (param instanceof PNMImageWriteParam) {
            isRaw = ((PNMImageWriteParam) param).getRaw();
        }
        if (maxSampleSize == 1)
            variant = '1';
        else if (sm.getNumBands() == 1) {
            variant = '2';
        } else if (sm.getNumBands() == 3) {
            variant = '3';
        }
        // Force to Raw if the sample size is small enough.
        if (variant <= '3' && isRaw && maxSampleSize <= 8) {
            variant += 0x3;
        }
    }
}

Example 75 with SampleModel

use of java.awt.image.SampleModel in project imageio-ext by geosolutions-it.

the class TIFFDecompressor method decode.

/**
 * Decodes the input bit stream (located in the
 * <code>ImageInputStream</code> <code>stream</code>, at offset
 * <code>offset</code>, and continuing for <code>byteCount</code>
 * bytes) into the output <code>BufferedImage</code>
 * <code>image</code>.
 *
 * <p> The default implementation analyzes the destination image
 * to determine if it is suitable as the destination for the
 * <code>decodeRaw</code> method.  If not, a suitable image is
 * created.  Next, <code>decodeRaw</code> is called to perform the
 * actual decoding, and the results are copied into the
 * destination image if necessary.  Subsampling and offsetting are
 * performed automatically.
 *
 * <p> The precise responsibilities of this routine are as
 * follows.  The input bit stream is defined by the instance
 * variables <code>stream</code>, <code>offset</code>, and
 * <code>byteCount</code>.  These bits contain the data for the
 * region of the source image defined by <code>srcMinX</code>,
 * <code>srcMinY</code>, <code>srcWidth</code>, and
 * <code>srcHeight</code>.
 *
 * <p> The source data is required to be subsampling, starting at
 * the <code>sourceXOffset</code>th column and including
 * every <code>subsampleX</code>th pixel thereafter (and similarly
 * for <code>sourceYOffset</code> and
 * <code>subsampleY</code>).
 *
 * <p> Pixels are copied into the destination with an addition shift of
 * (<code>dstXOffset</code>, <code>dstYOffset</code>).  The complete
 * set of formulas relating the source and destination coordinate spaces
 * are:
 *
 * <pre>
 * dx = (sx - sourceXOffset)/subsampleX + dstXOffset;
 * dy = (sy - sourceYOffset)/subsampleY + dstYOffset;
 * </pre>
 *
 * Only source pixels such that <code>(sx - sourceXOffset) %
 * subsampleX == 0</code> and <code>(sy - sourceYOffset) %
 * subsampleY == 0</code> are copied.
 *
 * <p> The inverse mapping, from destination to source coordinates,
 * is one-to-one:
 *
 * <pre>
 * sx = (dx - dstXOffset)*subsampleX + sourceXOffset;
 * sy = (dy - dstYOffset)*subsampleY + sourceYOffset;
 * </pre>
 *
 * <p> The region of the destination image to be updated is given
 * by the instance variables <code>dstMinX</code>,
 * <code>dstMinY</code>, <code>dstWidth</code>, and
 * <code>dstHeight</code>.
 *
 * <p> It is possible that not all of the source data being read
 * will contribute to the destination image.  For example, the
 * destination offsets could be set such that some of the source
 * pixels land outside of the bounds of the image.  As a
 * convenience, the bounds of the active source region (that is,
 * the region of the strip or tile being read that actually
 * contributes to the destination image, taking clipping into
 * account) are available as <code>activeSrcMinX</code>,
 * <code>activeSrcMinY</code>, <code>activeSrcWidth</code> and
 * <code>activeSrcHeight</code>.  Thus, the source pixel at
 * (<code>activeSrcMinX</code>, <code>activeSrcMinY</code>) will
 * map to the destination pixel (<code>dstMinX</code>,
 * <code>dstMinY</code>).
 *
 * <p> The sequence of source bands given by
 * <code>sourceBands</code> are to be copied into the sequence of
 * bands in the destination given by
 * <code>destinationBands</code>.
 *
 * <p> Some standard tag information is provided the instance
 * variables <code>photometricInterpretation</code>,
 * <code>compression</code>, <code>samplesPerPixel</code>,
 * <code>bitsPerSample</code>, <code>sampleFormat</code>,
 * <code>extraSamples</code>, and <code>colorMap</code>.
 *
 * <p> In practice, unless there is a significant performance
 * advantage to be gained by overriding this routine, most users
 * will prefer to use the default implementation of this routine,
 * and instead override the <code>decodeRaw</code> and/or
 * <code>getRawImageType</code> methods.
 *
 * @exception IOException if an error occurs in
 * <code>decodeRaw</code>.
 */
public void decode() throws IOException {
    byte[] byteData = null;
    short[] shortData = null;
    int[] intData = null;
    float[] floatData = null;
    double[] doubleData = null;
    int dstOffset = 0;
    int pixelBitStride = 1;
    int scanlineStride = 0;
    if (useTurbo) {
        decodeRaw(byteData, dstOffset, pixelBitStride, scanlineStride);
    } else {
        // Analyze raw image
        this.rawImage = null;
        if (isImageSimple) {
            if (isBilevel) {
                rawImage = this.image;
            } else if (isContiguous) {
                rawImage = image.getSubimage(dstMinX, dstMinY, dstWidth, dstHeight);
            }
        }
        boolean isDirectCopy = rawImage != null;
        if (rawImage == null) {
            rawImage = createRawImage();
            if (rawImage == null) {
                throw new IIOException("Couldn't create image buffer!");
            }
        }
        WritableRaster ras = rawImage.getRaster();
        if (isBilevel) {
            Rectangle rect = isImageSimple ? new Rectangle(dstMinX, dstMinY, dstWidth, dstHeight) : ras.getBounds();
            byteData = ImageUtil.getPackedBinaryData(ras, rect);
            dstOffset = 0;
            pixelBitStride = 1;
            scanlineStride = (rect.width + 7) / 8;
        } else {
            SampleModel sm = ras.getSampleModel();
            DataBuffer db = ras.getDataBuffer();
            boolean isSupportedType = false;
            if (sm instanceof ComponentSampleModel) {
                ComponentSampleModel csm = (ComponentSampleModel) sm;
                dstOffset = csm.getOffset(-ras.getSampleModelTranslateX(), -ras.getSampleModelTranslateY());
                scanlineStride = csm.getScanlineStride();
                if (db instanceof DataBufferByte) {
                    DataBufferByte dbb = (DataBufferByte) db;
                    byteData = dbb.getData();
                    pixelBitStride = csm.getPixelStride() * 8;
                    isSupportedType = true;
                } else if (db instanceof DataBufferUShort) {
                    DataBufferUShort dbus = (DataBufferUShort) db;
                    shortData = dbus.getData();
                    pixelBitStride = csm.getPixelStride() * 16;
                    isSupportedType = true;
                } else if (db instanceof DataBufferShort) {
                    DataBufferShort dbs = (DataBufferShort) db;
                    shortData = dbs.getData();
                    pixelBitStride = csm.getPixelStride() * 16;
                    isSupportedType = true;
                } else if (db instanceof DataBufferInt) {
                    DataBufferInt dbi = (DataBufferInt) db;
                    intData = dbi.getData();
                    pixelBitStride = csm.getPixelStride() * 32;
                    isSupportedType = true;
                } else if (db instanceof DataBufferFloat) {
                    DataBufferFloat dbf = (DataBufferFloat) db;
                    floatData = dbf.getData();
                    pixelBitStride = csm.getPixelStride() * 32;
                    isSupportedType = true;
                } else if (db instanceof DataBufferDouble) {
                    DataBufferDouble dbf = (DataBufferDouble) db;
                    doubleData = dbf.getData();
                    pixelBitStride = csm.getPixelStride() * 64;
                    isSupportedType = true;
                }
            } else if (sm instanceof MultiPixelPackedSampleModel) {
                MultiPixelPackedSampleModel mppsm = (MultiPixelPackedSampleModel) sm;
                dstOffset = mppsm.getOffset(-ras.getSampleModelTranslateX(), -ras.getSampleModelTranslateY());
                pixelBitStride = mppsm.getPixelBitStride();
                scanlineStride = mppsm.getScanlineStride();
                if (db instanceof DataBufferByte) {
                    DataBufferByte dbb = (DataBufferByte) db;
                    byteData = dbb.getData();
                    isSupportedType = true;
                } else if (db instanceof DataBufferUShort) {
                    DataBufferUShort dbus = (DataBufferUShort) db;
                    shortData = dbus.getData();
                    isSupportedType = true;
                } else if (db instanceof DataBufferInt) {
                    DataBufferInt dbi = (DataBufferInt) db;
                    intData = dbi.getData();
                    isSupportedType = true;
                }
            } else if (sm instanceof SinglePixelPackedSampleModel) {
                SinglePixelPackedSampleModel sppsm = (SinglePixelPackedSampleModel) sm;
                dstOffset = sppsm.getOffset(-ras.getSampleModelTranslateX(), -ras.getSampleModelTranslateY());
                scanlineStride = sppsm.getScanlineStride();
                if (db instanceof DataBufferByte) {
                    DataBufferByte dbb = (DataBufferByte) db;
                    byteData = dbb.getData();
                    pixelBitStride = 8;
                    isSupportedType = true;
                } else if (db instanceof DataBufferUShort) {
                    DataBufferUShort dbus = (DataBufferUShort) db;
                    shortData = dbus.getData();
                    pixelBitStride = 16;
                    isSupportedType = true;
                } else if (db instanceof DataBufferInt) {
                    DataBufferInt dbi = (DataBufferInt) db;
                    intData = dbi.getData();
                    pixelBitStride = 32;
                    isSupportedType = true;
                }
            }
            if (!isSupportedType) {
                throw new IIOException("Unsupported raw image type: SampleModel = " + sm + "; DataBuffer = " + db);
            }
        }
        if (isBilevel) {
            // Bilevel data are always in a contiguous byte buffer.
            decodeRaw(byteData, dstOffset, pixelBitStride, scanlineStride);
        } else {
            SampleModel sm = ras.getSampleModel();
            // bits except at the end of a row.
            if (isDataBufferBitContiguous(sm)) {
                // Use byte or float data directly.
                if (byteData != null) {
                    if (DEBUG) {
                        System.out.println("Decoding bytes directly");
                    }
                    if (offset == 0 && byteCount == 0 && noData != null) {
                        setEmptyTile(byteData, dstOffset, pixelBitStride, scanlineStride, noData.byteValue());
                    } else {
                        decodeRaw(byteData, dstOffset, pixelBitStride, scanlineStride);
                    }
                } else if (floatData != null) {
                    if (DEBUG) {
                        System.out.println("Decoding floats directly");
                    }
                    if (offset == 0 && byteCount == 0 && noData != null) {
                        setEmptyTile(floatData, dstOffset, pixelBitStride, scanlineStride, noData.floatValue());
                    } else {
                        decodeRaw(floatData, dstOffset, pixelBitStride, scanlineStride);
                    }
                } else if (doubleData != null) {
                    if (DEBUG) {
                        System.out.println("Decoding doubles directly");
                    }
                    if (offset == 0 && byteCount == 0 && noData != null) {
                        setEmptyTile(doubleData, dstOffset, pixelBitStride, scanlineStride, noData.doubleValue());
                    } else {
                        decodeRaw(doubleData, dstOffset, pixelBitStride, scanlineStride);
                    }
                } else {
                    if (shortData != null) {
                        if (offset == 0 && byteCount == 0 && noData != null) {
                            setEmptyTile(shortData, dstOffset, pixelBitStride, scanlineStride, noData.shortValue());
                        } else if (areSampleSizesEqual(sm) && sm.getSampleSize(0) == 16) {
                            if (DEBUG) {
                                System.out.println("Decoding shorts directly");
                            }
                            // Decode directly into short data.
                            decodeRaw(shortData, dstOffset, pixelBitStride, scanlineStride);
                        } else {
                            if (DEBUG) {
                                System.out.println("Decoding bytes->shorts");
                            }
                            // Decode into bytes and reformat into shorts.
                            int bpp = getBitsPerPixel(sm);
                            int bytesPerRow = (bpp * srcWidth + 7) / 8;
                            byte[] buf = new byte[bytesPerRow * srcHeight];
                            decodeRaw(buf, 0, bpp, bytesPerRow);
                            reformatData(buf, bytesPerRow, srcHeight, shortData, null, dstOffset, scanlineStride);
                        }
                    } else if (intData != null) {
                        if (offset == 0 && byteCount == 0 && noData != null) {
                            setEmptyTile(intData, dstOffset, pixelBitStride, scanlineStride, noData.intValue());
                        } else if (areSampleSizesEqual(sm) && sm.getSampleSize(0) == 32) {
                            if (DEBUG) {
                                System.out.println("Decoding ints directly");
                            }
                            // Decode directly into int data.
                            decodeRaw(intData, dstOffset, pixelBitStride, scanlineStride);
                        } else {
                            if (DEBUG) {
                                System.out.println("Decoding bytes->ints");
                            }
                            // Decode into bytes and reformat into ints.
                            int bpp = getBitsPerPixel(sm);
                            int bytesPerRow = (bpp * srcWidth + 7) / 8;
                            byte[] buf = new byte[bytesPerRow * srcHeight];
                            decodeRaw(buf, 0, bpp, bytesPerRow);
                            reformatData(buf, bytesPerRow, srcHeight, null, intData, dstOffset, scanlineStride);
                        }
                    }
                }
            } else {
                if (DEBUG) {
                    System.out.println("Decoding discontiguous data");
                }
                // Read discontiguous data into bytes and set the samples
                // into the Raster.
                int bpp = getBitsPerPixel(sm);
                int bytesPerRow = (bpp * srcWidth + 7) / 8;
                byte[] buf = new byte[bytesPerRow * srcHeight];
                decodeRaw(buf, 0, bpp, bytesPerRow);
                reformatDiscontiguousData(buf, bytesPerRow, srcWidth, srcHeight, ras);
            }
        }
        if (colorConverter != null) {
            float[] rgb = new float[3];
            if (byteData != null) {
                for (int j = 0; j < dstHeight; j++) {
                    int idx = dstOffset;
                    for (int i = 0; i < dstWidth; i++) {
                        float x0 = (float) (byteData[idx] & 0xff);
                        float x1 = (float) (byteData[idx + 1] & 0xff);
                        float x2 = (float) (byteData[idx + 2] & 0xff);
                        colorConverter.toRGB(x0, x1, x2, rgb);
                        byteData[idx] = (byte) (rgb[0]);
                        byteData[idx + 1] = (byte) (rgb[1]);
                        byteData[idx + 2] = (byte) (rgb[2]);
                        idx += 3;
                    }
                    dstOffset += scanlineStride;
                }
            } else if (shortData != null) {
                if (sampleFormat[0] == BaselineTIFFTagSet.SAMPLE_FORMAT_SIGNED_INTEGER) {
                    for (int j = 0; j < dstHeight; j++) {
                        int idx = dstOffset;
                        for (int i = 0; i < dstWidth; i++) {
                            float x0 = (float) shortData[idx];
                            float x1 = (float) shortData[idx + 1];
                            float x2 = (float) shortData[idx + 2];
                            colorConverter.toRGB(x0, x1, x2, rgb);
                            shortData[idx] = (short) (rgb[0]);
                            shortData[idx + 1] = (short) (rgb[1]);
                            shortData[idx + 2] = (short) (rgb[2]);
                            idx += 3;
                        }
                        dstOffset += scanlineStride;
                    }
                } else {
                    for (int j = 0; j < dstHeight; j++) {
                        int idx = dstOffset;
                        for (int i = 0; i < dstWidth; i++) {
                            float x0 = (float) (shortData[idx] & 0xffff);
                            float x1 = (float) (shortData[idx + 1] & 0xffff);
                            float x2 = (float) (shortData[idx + 2] & 0xffff);
                            colorConverter.toRGB(x0, x1, x2, rgb);
                            shortData[idx] = (short) (rgb[0]);
                            shortData[idx + 1] = (short) (rgb[1]);
                            shortData[idx + 2] = (short) (rgb[2]);
                            idx += 3;
                        }
                        dstOffset += scanlineStride;
                    }
                }
            } else if (intData != null) {
                for (int j = 0; j < dstHeight; j++) {
                    int idx = dstOffset;
                    for (int i = 0; i < dstWidth; i++) {
                        float x0 = (float) intData[idx];
                        float x1 = (float) intData[idx + 1];
                        float x2 = (float) intData[idx + 2];
                        colorConverter.toRGB(x0, x1, x2, rgb);
                        intData[idx] = (int) (rgb[0]);
                        intData[idx + 1] = (int) (rgb[1]);
                        intData[idx + 2] = (int) (rgb[2]);
                        idx += 3;
                    }
                    dstOffset += scanlineStride;
                }
            } else if (floatData != null) {
                for (int j = 0; j < dstHeight; j++) {
                    int idx = dstOffset;
                    for (int i = 0; i < dstWidth; i++) {
                        float x0 = floatData[idx];
                        float x1 = floatData[idx + 1];
                        float x2 = floatData[idx + 2];
                        colorConverter.toRGB(x0, x1, x2, rgb);
                        floatData[idx] = rgb[0];
                        floatData[idx + 1] = rgb[1];
                        floatData[idx + 2] = rgb[2];
                        idx += 3;
                    }
                    dstOffset += scanlineStride;
                }
            }
        // int[] p = new int[3];
        // ras.getPixel(0, 0, p);
        // System.out.println("p00 = " +
        // p[0] + " " + p[1] + " " + p[2]);
        // ras.getPixel(1, 0, p);
        // System.out.println("p10 = " +
        // p[0] + " " + p[1] + " " + p[2]);
        // ras.getPixel(2, 0, p);
        // System.out.println("p20 = " +
        // p[0] + " " + p[1] + " " + p[2]);
        // ras.getPixel(3, 0, p);
        // System.out.println("p30 = " +
        // p[0] + " " + p[1] + " " + p[2]);
        // ColorSpace rgb = ColorSpace.getInstance(ColorSpace.CS_sRGB);
        // ColorConvertOp op = new ColorConvertOp(colorSpace, rgb, null);
        // WritableRaster dest = op.createCompatibleDestRaster(ras);
        // op.filter(ras, dest);
        // ras = dest;
        }
        if (photometricInterpretation == BaselineTIFFTagSet.PHOTOMETRIC_INTERPRETATION_WHITE_IS_ZERO) {
            if (byteData != null) {
                int bytesPerRow = (srcWidth * pixelBitStride + 7) / 8;
                for (int y = 0; y < srcHeight; y++) {
                    int offset = dstOffset + y * scanlineStride;
                    for (int i = 0; i < bytesPerRow; i++) {
                        byteData[offset + i] ^= 0xff;
                    }
                }
            } else if (shortData != null) {
                int shortsPerRow = (srcWidth * pixelBitStride + 15) / 16;
                if (sampleFormat[0] == BaselineTIFFTagSet.SAMPLE_FORMAT_SIGNED_INTEGER) {
                    for (int y = 0; y < srcHeight; y++) {
                        int offset = dstOffset + y * scanlineStride;
                        for (int i = 0; i < shortsPerRow; i++) {
                            int shortOffset = offset + i;
                            // XXX Does this make any sense?
                            shortData[shortOffset] = (short) (Short.MAX_VALUE - shortData[shortOffset]);
                        }
                    }
                } else {
                    for (int y = 0; y < srcHeight; y++) {
                        int offset = dstOffset + y * scanlineStride;
                        for (int i = 0; i < shortsPerRow; i++) {
                            shortData[offset + i] ^= 0xffff;
                        }
                    }
                }
            } else if (intData != null) {
                int intsPerRow = (srcWidth * pixelBitStride + 15) / 16;
                for (int y = 0; y < srcHeight; y++) {
                    int offset = dstOffset + y * scanlineStride;
                    for (int i = 0; i < intsPerRow; i++) {
                        int intOffset = offset + i;
                        // XXX Does this make any sense?
                        intData[intOffset] = Integer.MAX_VALUE - intData[intOffset];
                    }
                }
            } else if (floatData != null) {
                int floatsPerRow = (srcWidth * pixelBitStride + 15) / 16;
                for (int y = 0; y < srcHeight; y++) {
                    int offset = dstOffset + y * scanlineStride;
                    for (int i = 0; i < floatsPerRow; i++) {
                        int floatOffset = offset + i;
                        // XXX Does this make any sense?
                        floatData[floatOffset] = 1.0F - floatData[floatOffset];
                    }
                }
            }
        }
        if (isBilevel) {
            Rectangle rect = isImageSimple ? new Rectangle(dstMinX, dstMinY, dstWidth, dstHeight) : ras.getBounds();
            ImageUtil.setPackedBinaryData(byteData, ras, rect);
        }
        // equals the raster of 'image' or is a child thereof.
        if (isDirectCopy) {
            // rawImage == image) {
            return;
        }
    }
    // Copy the raw image data into the true destination image
    Raster src = rawImage.getRaster();
    // Create band child of source
    Raster srcChild = src.createChild(0, 0, srcWidth, srcHeight, srcMinX, srcMinY, planar ? null : sourceBands);
    WritableRaster dst = image.getRaster();
    // Create dst child covering area and bands to be written
    WritableRaster dstChild = dst.createWritableChild(dstMinX, dstMinY, dstWidth, dstHeight, dstMinX, dstMinY, destinationBands);
    if (subsampleX == 1 && subsampleY == 1 && !adjustBitDepths) {
        srcChild = srcChild.createChild(activeSrcMinX, activeSrcMinY, activeSrcWidth, activeSrcHeight, dstMinX, dstMinY, null);
        dstChild.setRect(srcChild);
    } else if (subsampleX == 1 && !adjustBitDepths) {
        int sy = activeSrcMinY;
        int dy = dstMinY;
        while (sy < srcMinY + srcHeight) {
            Raster srcRow = srcChild.createChild(activeSrcMinX, sy, activeSrcWidth, 1, dstMinX, dy, null);
            dstChild.setRect(srcRow);
            sy += subsampleY;
            ++dy;
        }
    } else {
        // /init vars
        int numBands = srcChild.getNumBands();
        int sy = activeSrcMinY;
        int dy = dstMinY;
        // get the databuffer type
        final int type = srcChild.getDataBuffer().getDataType();
        switch(type) {
            case DataBuffer.TYPE_BYTE:
            case DataBuffer.TYPE_INT:
            case DataBuffer.TYPE_SHORT:
            case DataBuffer.TYPE_USHORT:
                int[] p = srcChild.getPixel(srcMinX, srcMinY, (int[]) null);
                while (sy < activeSrcMinY + activeSrcHeight) {
                    int sx = activeSrcMinX;
                    int dx = dstMinX;
                    while (sx < activeSrcMinX + activeSrcWidth) {
                        srcChild.getPixel(sx, sy, p);
                        if (adjustBitDepths) {
                            for (int band = 0; band < numBands; band++) {
                                p[band] = bitDepthScale[band][p[band]];
                            }
                        }
                        dstChild.setPixel(dx, dy, p);
                        sx += subsampleX;
                        ++dx;
                    }
                    sy += subsampleY;
                    ++dy;
                }
                break;
            case DataBuffer.TYPE_DOUBLE:
                double[] d = srcChild.getPixel(srcMinX, srcMinY, (double[]) null);
                while (sy < activeSrcMinY + activeSrcHeight) {
                    int sx = activeSrcMinX;
                    int dx = dstMinX;
                    while (sx < activeSrcMinX + activeSrcWidth) {
                        srcChild.getPixel(sx, sy, d);
                        // if (adjustBitDepths) {
                        // for (int band = 0; band < numBands; band++) {
                        // d[band] = bitDepthScale[band][d[band]];
                        // }
                        // }
                        dstChild.setPixel(dx, dy, d);
                        sx += subsampleX;
                        ++dx;
                    }
                    sy += subsampleY;
                    ++dy;
                }
                break;
            case DataBuffer.TYPE_FLOAT:
                float[] f = srcChild.getPixel(srcMinX, srcMinY, (float[]) null);
                while (sy < activeSrcMinY + activeSrcHeight) {
                    int sx = activeSrcMinX;
                    int dx = dstMinX;
                    while (sx < activeSrcMinX + activeSrcWidth) {
                        srcChild.getPixel(sx, sy, f);
                        // if (adjustBitDepths) {
                        // for (int band = 0; band < numBands; band++) {
                        // d[band] = bitDepthScale[band][d[band]];
                        // }
                        // }
                        dstChild.setPixel(dx, dy, f);
                        sx += subsampleX;
                        ++dx;
                    }
                    sy += subsampleY;
                    ++dy;
                }
                break;
            default:
                break;
        }
    }
}