From 6025b6016517c6d898d8957d1d7e03ba71431912 Mon Sep 17 00:00:00 2001 From: tknall Date: Fri, 1 Dec 2006 12:20:24 +0000 Subject: Initial import of release 2.2. git-svn-id: https://joinup.ec.europa.eu/svn/pdf-as/trunk@4 7b5415b0-85f9-ee4d-85bd-d5d0c3b42d1c --- .../pdmodel/graphics/xobject/PDPixelMap.java | 236 +++++++++++++++++++++ 1 file changed, 236 insertions(+) create mode 100644 src/main/java/org/pdfbox/pdmodel/graphics/xobject/PDPixelMap.java (limited to 'src/main/java/org/pdfbox/pdmodel/graphics/xobject/PDPixelMap.java') 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. + * + * + * + * 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; + } +} \ No newline at end of file -- cgit v1.2.3