cd5b63e5b5
zbar was using a 2010 snapshot of its hg tree. Take a new snapshot to get zbar's improvements. [Imported from Fedora 26 tree]
99 lines
3.0 KiB
Java
99 lines
3.0 KiB
Java
/*------------------------------------------------------------------------
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* ImageScanner
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*
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* Copyright 2007-2010 (c) Jeff Brown <spadix@users.sourceforge.net>
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*
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* This file is part of the ZBar Bar Code Reader.
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*
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* The ZBar Bar Code Reader is free software; you can redistribute it
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* and/or modify it under the terms of the GNU Lesser Public License as
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* published by the Free Software Foundation; either version 2.1 of
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* the License, or (at your option) any later version.
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*
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* The ZBar Bar Code Reader is distributed in the hope that it will be
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* useful, but WITHOUT ANY WARRANTY; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser Public License for more details.
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*
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* You should have received a copy of the GNU Lesser Public License
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* along with the ZBar Bar Code Reader; if not, write to the Free
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* Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301 USA
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*
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* http://sourceforge.net/projects/zbar
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*------------------------------------------------------------------------*/
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package net.sourceforge.zbar;
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/** Read barcodes from 2-D images.
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*/
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public class ImageScanner
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{
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/** C pointer to a zbar_image_scanner_t. */
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private long peer;
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static
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{
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System.loadLibrary("zbarjni");
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init();
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}
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private static native void init();
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public ImageScanner ()
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{
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peer = create();
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}
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/** Create an associated peer instance. */
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private native long create();
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protected void finalize ()
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{
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destroy();
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}
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/** Clean up native data associated with an instance. */
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public synchronized void destroy ()
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{
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if(peer != 0) {
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destroy(peer);
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peer = 0;
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}
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}
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/** Destroy the associated peer instance. */
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private native void destroy(long peer);
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/** Set config for indicated symbology (0 for all) to specified value.
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*/
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public native void setConfig(int symbology, int config, int value)
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throws IllegalArgumentException;
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/** Parse configuration string and apply to image scanner. */
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public native void parseConfig(String config);
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/** Enable or disable the inter-image result cache (default disabled).
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* Mostly useful for scanning video frames, the cache filters duplicate
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* results from consecutive images, while adding some consistency
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* checking and hysteresis to the results. Invoking this method also
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* clears the cache.
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*/
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public native void enableCache(boolean enable);
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/** Retrieve decode results for last scanned image.
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* @returns the SymbolSet result container
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*/
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public SymbolSet getResults ()
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{
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return(new SymbolSet(getResults(peer)));
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}
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private native long getResults(long peer);
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/** Scan for symbols in provided Image.
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* The image format must currently be "Y800" or "GRAY".
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* @returns the number of symbols successfully decoded from the image.
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*/
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public native int scanImage(Image image);
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}
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