/*
 * Copyright (c) 2011, 2014, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code 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 General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 */

package com.sun.webkit.graphics;


public abstract class WCImageDecoder {

    /**
     * Receives a portion of image data.
     *
     * @param data  a portion of image data,
     *              or {@code null} if all data received
     */
    protected abstract void addImageData(byte[] data);

    /**
     * Returns image size.
     * @param size a buffer of size 2.
     */
    protected abstract void getImageSize(int[] size);

    /**
     * Returns a number of frames of the decoded image.
     *
     * @return  a number of image frames
     */
    protected abstract int getFrameCount();

    /*
     * Returns image frame at the specified index. The [data] parameter is
     * either null or an array of size 5. If non-null, it should be filled
     * as follows:
     *  1 if the frame is complete, 0 otherwise;
     *  frame width
     *  frame height
     *  frame duration in milliseconds
     *  1 if the frame has translucent pixels, 0 otherwise
     */
    protected abstract WCImageFrame getFrame(int idx, int[] data);

    protected abstract void loadFromResource(String name);

    protected abstract void destroy();

    protected abstract String getFilenameExtension();
}
