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/*------------------------------------------------------------------------
* Image
*
* Copyright 2007-2010 (c) Jeff Brown <spadix@users.sourceforge.net>
*
* This file is part of the ZBar Bar Code Reader.
*
* The ZBar Bar Code Reader is free software; you can redistribute it
* and/or modify it under the terms of the GNU Lesser Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* The ZBar Bar Code Reader 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 Public License for more details.
*
* You should have received a copy of the GNU Lesser Public License
* along with the ZBar Bar Code Reader; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301 USA
*
* http://sourceforge.net/projects/zbar
*------------------------------------------------------------------------*/
package net.sourceforge.zbar;
/** stores image data samples along with associated format and size
* metadata.
*/
public class Image
{
/** C pointer to a zbar_symbol_t. */
private long peer;
private Object data;
static
{
System.loadLibrary("zbarjni");
init();
}
private static native void init();
public Image ()
{
peer = create();
}
public Image (int width, int height)
{
this();
setSize(width, height);
}
public Image (int width, int height, String format)
{
this();
setSize(width, height);
setFormat(format);
}
public Image (String format)
{
this();
setFormat(format);
}
Image (long peer)
{
this.peer = peer;
}
/** Create an associated peer instance. */
private native long create();
protected void finalize ()
{
destroy();
}
/** Clean up native data associated with an instance. */
public synchronized void destroy ()
{
if(peer != 0) {
destroy(peer);
peer = 0;
}
}
/** Destroy the associated peer instance. */
private native void destroy(long peer);
/** Image format conversion.
* @returns a @em new image with the sample data from the original
* image converted to the requested format fourcc. the original
* image is unaffected.
*/
public Image convert (String format)
{
long newpeer = convert(peer, format);
if(newpeer == 0)
return(null);
return(new Image(newpeer));
}
private native long convert(long peer, String format);
/** Retrieve the image format fourcc. */
public native String getFormat();
/** Specify the fourcc image format code for image sample data. */
public native void setFormat(String format);
/** Retrieve a "sequence" (page/frame) number associated with this
* image.
*/
public native int getSequence();
/** Associate a "sequence" (page/frame) number with this image. */
public native void setSequence(int seq);
/** Retrieve the width of the image. */
public native int getWidth();
/** Retrieve the height of the image. */
public native int getHeight();
/** Retrieve the size of the image. */
public native int[] getSize();
/** Specify the pixel size of the image. */
public native void setSize(int width, int height);
/** Specify the pixel size of the image. */
public native void setSize(int[] size);
/** Retrieve the crop region of the image. */
public native int[] getCrop();
/** Specify the crop region of the image. */
public native void setCrop(int x, int y, int width, int height);
/** Specify the crop region of the image. */
public native void setCrop(int[] crop);
/** Retrieve the image sample data. */
public native byte[] getData();
/** Specify image sample data. */
public native void setData(byte[] data);
/** Specify image sample data. */
public native void setData(int[] data);
/** Retrieve the decoded results associated with this image. */
public SymbolSet getSymbols ()
{
return(new SymbolSet(getSymbols(peer)));
}
private native long getSymbols(long peer);
}
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