diff options
Diffstat (limited to 'src/main/java/org/pdfbox/pdmodel/graphics/xobject/PDPixelMap.java')
| -rw-r--r-- | src/main/java/org/pdfbox/pdmodel/graphics/xobject/PDPixelMap.java | 236 |
1 files changed, 236 insertions, 0 deletions
diff --git a/src/main/java/org/pdfbox/pdmodel/graphics/xobject/PDPixelMap.java b/src/main/java/org/pdfbox/pdmodel/graphics/xobject/PDPixelMap.java new file mode 100644 index 0000000..96a1f29 --- /dev/null +++ b/src/main/java/org/pdfbox/pdmodel/graphics/xobject/PDPixelMap.java @@ -0,0 +1,236 @@ +/**
+ * Copyright (c) 2004-2005, www.pdfbox.org
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * 3. Neither the name of pdfbox; nor the names of its
+ * contributors may be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * http://www.pdfbox.org
+ *
+ */
+package org.pdfbox.pdmodel.graphics.xobject;
+
+import java.awt.image.DataBufferByte;
+import java.awt.image.BufferedImage;
+import java.awt.image.ColorModel;
+import java.awt.image.WritableRaster;
+import java.io.IOException;
+import java.io.OutputStream;
+
+import javax.imageio.ImageIO;
+
+import org.pdfbox.cos.COSArray;
+import org.pdfbox.cos.COSBase;
+import org.pdfbox.cos.COSDictionary;
+import org.pdfbox.pdmodel.common.PDStream;
+
+import org.pdfbox.pdmodel.graphics.color.PDColorSpace;
+import org.pdfbox.pdmodel.graphics.predictor.PredictorAlgorithm;
+
+/**
+ * This class contains a PixelMap Image.
+ * @author Ben Litchfield (ben@benlitchfield.com)
+ * @author mathiak
+ * @version $Revision: 1.7 $
+ */
+public class PDPixelMap extends PDXObjectImage
+{
+ private BufferedImage image = null;
+
+ /**
+ * Standard constructor. Basically does nothing.
+ * @param pdStream The stream that holds the pixel map.
+ */
+ public PDPixelMap(PDStream pdStream)
+ {
+ super(pdStream, "png");
+ }
+
+ /**
+ * Construct a pixel map image from an AWT image.
+ *
+ * @param doc The PDF document to embed the image in.
+ * @param awtImage The image to read data from.
+ *
+ * @throws IOException If there is an error while embedding this image.
+ */
+ /*
+ * This method is broken and needs to be implemented, any takers?
+ public PDPixelMap(PDDocument doc, BufferedImage awtImage) throws IOException
+ {
+ super( doc, "png");
+ image = awtImage;
+ setWidth( image.getWidth() );
+ setHeight( image.getHeight() );
+
+ ColorModel cm = image.getColorModel();
+ ColorSpace cs = cm.getColorSpace();
+ PDColorSpace pdColorSpace = PDColorSpaceFactory.createColorSpace( doc, cs );
+ setColorSpace( pdColorSpace );
+ //setColorSpace( )
+
+ PDStream stream = getPDStream();
+ OutputStream output = null;
+ try
+ {
+ output = stream.createOutputStream();
+ DataBuffer buffer = awtImage.getRaster().getDataBuffer();
+ if( buffer instanceof DataBufferByte )
+ {
+ DataBufferByte byteBuffer = (DataBufferByte)buffer;
+ byte[] data = byteBuffer.getData();
+ output.write( data );
+ }
+ setBitsPerComponent( cm.getPixelSize() );
+ }
+ finally
+ {
+ if( output != null )
+ {
+ output.close();
+ }
+ }
+ }*/
+
+ /**
+ * Returns a {@link java.awt.image.BufferedImage} of the COSStream
+ * set in the constructor or null if the COSStream could not be encoded.
+ *
+ * @see org.pdfbox.pdmodel.graphics.xobject.PDXObjectImage#getRGBImage()
+ */
+ public BufferedImage getRGBImage() throws IOException
+ {
+ if( image != null )
+ {
+ return image;
+ }
+
+ //byte[] index =
+ //ColorSpace cs = ColorSpace.getInstance(ColorSpace.CS_sRGB);
+ int width = getWidth();
+ int height = getHeight();
+ int bpc = getBitsPerComponent();
+ //COSInteger length =
+ // (COSInteger) stream.getStream().getDictionary().getDictionaryObject(COSName.LENGTH);
+ //byte[] array = new byte[stream.getFilteredStream().];
+ byte[] array = getPDStream().getByteArray();
+
+// Get the ColorModel right
+ PDColorSpace colorspace = getColorSpace();
+ ColorModel cm = colorspace.createColorModel( bpc );
+ WritableRaster raster = cm.createCompatibleWritableRaster( width, height );
+ //DataBufferByte buffer = (DataBufferByte)raster.getDataBuffer();
+ DataBufferByte buffer = (DataBufferByte)raster.getDataBuffer();
+ byte[] bufferData = buffer.getData();
+ //System.arraycopy( array, 0, bufferData, 0, array.length );
+ int predictor = getPredictor();
+
+ PredictorAlgorithm filter = PredictorAlgorithm.getFilter(predictor);
+ filter.setWidth(width);
+ filter.setHeight(height);
+ filter.setBpp((bpc * 3) / 8);
+ filter.decode(array, bufferData);
+ image = new BufferedImage(cm, raster, false, null);
+ return image;
+ }
+
+ /**
+ * Writes the image as .png.
+ *
+ * @see org.pdfbox.pdmodel.graphics.xobject.PDXObjectImage#write2OutputStream(java.io.OutputStream)
+ */
+ public void write2OutputStream(OutputStream out) throws IOException
+ {
+ getRGBImage();
+ if (image!=null)
+ {
+ ImageIO.write(image, "png", out);
+ }
+ }
+
+ /**
+ * DecodeParms is an optional parameter for filters.
+ *
+ * It is provided if any of the filters has nondefault parameters. If there
+ * is only one filter it is a dictionary, if there are multiple filters it
+ * is an array with an entry for each filter. An array entry can hold a null
+ * value if only the default values are used or a dictionary with
+ * parameters.
+ *
+ * @return The decoding parameters.
+ *
+ */
+ public COSDictionary getDecodeParams()
+ {
+ COSBase decodeParms = getCOSStream().getDictionaryObject("DecodeParms");
+ if (decodeParms != null)
+ {
+ if (decodeParms instanceof COSDictionary)
+ {
+ return (COSDictionary) decodeParms;
+ }
+ else if (decodeParms instanceof COSArray)
+ {
+ // not implemented yet, which index should we use?
+ return null;//(COSDictionary)((COSArray)decodeParms).get(0);
+ }
+ else
+ {
+ return null;
+ }
+ }
+ return null;
+ }
+
+ /**
+ * A code that selects the predictor algorithm.
+ *
+ * <ul>
+ * <li>1 No prediction (the default value)
+ * <li>2 TIFF Predictor 2
+ * <li>10 PNG prediction (on encoding, PNG None on all rows)
+ * <li>11 PNG prediction (on encoding, PNG Sub on all rows)
+ * <li>12 PNG prediction (on encoding, PNG Up on all rows)
+ * <li>13 PNG prediction (on encoding, PNG Average on all rows)
+ * <li>14 PNG prediction (on encoding, PNG Paeth on all rows)
+ * <li>15 PNG prediction (on encoding, PNG optimum)
+ * </ul>
+ *
+ * Default value: 1.
+ *
+ * @return predictor algorithm code
+ */
+ public int getPredictor()
+ {
+ COSDictionary decodeParms = getDecodeParams();
+ if (decodeParms != null)
+ {
+ int i = decodeParms.getInt("Predictor");
+ if (i != -1)
+ {
+ return i;
+ }
+ }
+ return 1;
+ }
+}
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