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/*
* This program is free software; you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License, version 2.1 as published by the Free Software
* Foundation.
*
* You should have received a copy of the GNU Lesser General Public License along with this
* program; if not, you can obtain a copy at http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
* or from the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU Lesser General Public License for more details.
*
* Copyright (c) 2000 - 2009 Pentaho Corporation, Object Refinery Limited and Contributors. All rights reserved.
*/
package org.pentaho.reporting.libraries.pixie.wmf.bitmap;
import java.awt.image.BufferedImage;
import java.io.IOException;
import java.io.InputStream;
import org.pentaho.reporting.libraries.pixie.wmf.MfRecord;
public class DIBReader
{
private GDIPalette palette; // as GDI Color value
private BitmapHeader header;
public DIBReader()
{
}
public BufferedImage setRecord(final MfRecord record)
throws IOException
{
return setRecord(record, 0);
}
public BufferedImage setRecord(final MfRecord record, final int offset)
throws IOException
{
header = new BitmapHeader();
header.setRecord(record, offset);
palette = new GDIPalette();
palette.setNoOfColors(header.getNoOfColors());
final int width = header.getWidth();
final int height = header.getHeight();
final int paletteStart = MfRecord.RECORD_HEADER_SIZE + header.getHeaderSize() + 4 + offset;
final InputStream dataIn = record.getInputStream(paletteStart);
palette.readPalette(dataIn);
final int compression = header.getCompression();
final BitmapCompression comHandler = BitmapCompressionFactory.getHandler(compression);
comHandler.setDimension(width, height);
comHandler.setBpp(header.getBitsPerPixel());
final int[] data = comHandler.decompress(dataIn, palette);
final BufferedImage retval = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
retval.setRGB(0, 0, width, height, data, 0, width);
return retval;
}
}
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