mirror of git://gcc.gnu.org/git/gcc.git
129 lines
4.1 KiB
Java
129 lines
4.1 KiB
Java
/* EncodeRGB1.java --
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Copyright (C) 2006 Free Software Foundation, Inc.
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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package gnu.javax.imageio.bmp;
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import java.awt.image.BufferedImage;
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import java.awt.image.PixelGrabber;
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import java.io.IOException;
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import javax.imageio.IIOImage;
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import javax.imageio.ImageWriteParam;
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import javax.imageio.metadata.IIOMetadata;
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import javax.imageio.stream.ImageOutputStream;
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public class EncodeRGB1
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extends BMPEncoder
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{
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protected BMPInfoHeader infoHeader;
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protected BMPFileHeader fileHeader;
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protected long offset;
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/**
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* Constructs an instance of this class.
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*
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* @param fh - the file header to use.
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* @param ih - the info header to use.
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*/
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public EncodeRGB1(BMPFileHeader fh, BMPInfoHeader ih)
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{
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super();
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fileHeader = fh;
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infoHeader = ih;
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offset = BMPFileHeader.SIZE + BMPInfoHeader.SIZE;
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}
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/**
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* The image encoder.
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*
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* @param o - the image output stream
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* @param streamMetadata - metadata associated with this stream, or
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* null
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* @param image - an IIOImage containing image data.
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* @param param - image writing parameters, or null
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* @exception IOException if a write error occurs
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*/
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public void encode(ImageOutputStream o, IIOMetadata streamMetadata,
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IIOImage image, ImageWriteParam param) throws IOException
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{
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int size;
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int value;
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int j;
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int rowCount;
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int rowIndex;
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int lastRowIndex;
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int[] bitmap;
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byte rgb[] = new byte[1];
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size = (infoHeader.biWidth * infoHeader.biHeight) - 1;
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rowCount = 1;
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rowIndex = size - infoHeader.biWidth;
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lastRowIndex = rowIndex;
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try
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{
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bitmap = new int[infoHeader.biWidth * infoHeader.biHeight];
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PixelGrabber pg = new PixelGrabber((BufferedImage) image.getRenderedImage(),
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0, 0, infoHeader.biWidth,
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infoHeader.biHeight, bitmap, 0,
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infoHeader.biWidth);
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pg.grabPixels();
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for (j = 0; j < size; j++)
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{
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value = bitmap[rowIndex];
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rgb[0] = (byte) (value & 0xFF);
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o.write(rgb);
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if (rowCount == infoHeader.biWidth)
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{
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rowCount = 1;
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rowIndex = lastRowIndex - infoHeader.biWidth;
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lastRowIndex = rowIndex;
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}
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else
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rowCount++;
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rowIndex++;
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}
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}
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catch (Exception wb)
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{
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wb.printStackTrace();
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}
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}
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}
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