BitmapCompression.java example

Explorer
pentaho-reporting-master
/*
* 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) 2001 - 2013 Object Refinery Ltd, Pentaho Corporation and Contributors..  All rights reserved.
*/

package org.pentaho.reporting.libraries.pixie.wmf.bitmap;

import java.io.IOException;
import java.io.InputStream;

public abstract class BitmapCompression {
  private int height;
  private int width;
  private int bpp;
  private boolean topDown;

  protected BitmapCompression() {
  }

  public void setDimension( final int width, final int height ) {
    this.width = width;
    this.height = height;
  }

  public int getHeight() {
    return height;
  }

  public int getWidth() {
    return width;
  }

  public int getBpp() {
    return bpp;
  }

  public void setBpp( final int bpp ) {
    this.bpp = bpp;
  }

  public void setTopDown( final boolean b ) {
    this.topDown = b;
  }

  public boolean isTopDown() {
    return topDown;
  }

  public abstract int[] decompress( InputStream in, GDIPalette palette )
    throws IOException;

  public static int[] expandMonocrome( final int b, final GDIPalette pal ) {
    final int tColor = pal.lookupColor( 1 );
    final int fColor = pal.lookupColor( 0 );

    final int[] retval = new int[ 8 ];
    if ( ( b & 0x01 ) == 0x01 ) {
      retval[ 0 ] = tColor;
    } else {
      retval[ 0 ] = fColor;
    }
    if ( ( b & 0x02 ) == 0x02 ) {
      retval[ 1 ] = tColor;
    } else {
      retval[ 1 ] = fColor;
    }
    if ( ( b & 0x04 ) == 0x04 ) {
      retval[ 2 ] = tColor;
    } else {
      retval[ 2 ] = fColor;
    }
    if ( ( b & 0x08 ) == 0x08 ) {
      retval[ 3 ] = tColor;
    } else {
      retval[ 3 ] = fColor;
    }
    if ( ( b & 0x10 ) == 0x10 ) {
      retval[ 4 ] = tColor;
    } else {
      retval[ 4 ] = fColor;
    }
    if ( ( b & 0x20 ) == 0x20 ) {
      retval[ 5 ] = tColor;
    } else {
      retval[ 5 ] = fColor;
    }
    if ( ( b & 0x40 ) == 0x40 ) {
      retval[ 6 ] = tColor;
    } else {
      retval[ 6 ] = fColor;
    }
    if ( ( b & 0x80 ) == 0x80 ) {
      retval[ 7 ] = tColor;
    } else {
      retval[ 7 ] = fColor;
    }
    return retval;
  }

  public static int[] expand4BitTuple( final int b, final GDIPalette pal ) {
    final int[] retval = new int[ 2 ];
    retval[ 0 ] = pal.lookupColor( ( b & 0xF0 ) >> 4 );
    retval[ 1 ] = pal.lookupColor( b & 0x0F );
    return retval;
  }
}