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/*
 * PROJECT: NyARToolkit
 * --------------------------------------------------------------------------------
 * This work is based on the original ARToolKit developed by
 *   Hirokazu Kato
 *   Mark Billinghurst
 *   HITLab, University of Washington, Seattle
 * http://www.hitl.washington.edu/artoolkit/
 *
 * The NyARToolkit is Java version ARToolkit class library.
 * Copyright (C)2008 R.Iizuka
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this framework; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 * For further information please contact.
 *      http://nyatla.jp/nyatoolkit/
 *      <airmail(at)ebony.plala.or.jp>
 *
 */
package jp.nyatla.nyartoolkit.core.raster;

public class NyARRaster_RGB implements NyARRaster {
        protected byte[] ref_buf;
        protected int width;
        protected int height;

        public static NyARRaster_RGB wrap(byte[] i_buffer, int i_width, int i_height) {
                NyARRaster_RGB new_inst = new NyARRaster_RGB();
                new_inst.ref_buf = i_buffer;
                new_inst.width = i_width;
                new_inst.height = i_height;
                return new_inst;
        }

        public static NyARRaster_RGB wrap(NyARRaster_RGB new_inst, byte[] i_buffer,
                        int i_width, int i_height) {
                new_inst.ref_buf = i_buffer;
                new_inst.width = i_width;
                new_inst.height = i_height;
                return new_inst;
        }

        // RGBの合計値を返す
        public int getPixelTotal(int i_x, int i_y) {
                byte[] ref = this.ref_buf;
                int bp = (i_x + i_y * this.width) * 3;
                return (ref[bp] & 0xff) + (ref[bp + 1] & 0xff) + (ref[bp + 2] & 0xff);
        }

        public void getPixelTotalRowLine(int i_row, int[] o_line) {
                final byte[] ref = this.ref_buf;
                int bp = (i_row + 1) * this.width * 3 - 3;
                for (int i = this.width - 1; i >= 0; i--) {
                        o_line[i] = (ref[bp] & 0xff) + (ref[bp + 1] & 0xff)
                                        + (ref[bp + 2] & 0xff);
                        bp -= 3;
                }
        }

        public int getWidth() {
                return width;
        }

        public int getHeight() {
                return height;
        }

        public void getPixel(int i_x, int i_y, int[] i_rgb) {
                int bp = (i_x + i_y * this.width) * 3;
                byte[] ref = this.ref_buf;
                i_rgb[0] = (ref[bp + 0] & 0xff);// R
                i_rgb[1] = (ref[bp + 1] & 0xff);// G
                i_rgb[2] = (ref[bp + 2] & 0xff);// B
        }

        public void getPixelSet(int[] i_x, int i_y[], int i_num, int[] o_rgb) {
                int width = this.width;
                byte[] ref = this.ref_buf;
                int bp;
                for (int i = i_num - 1; i >= 0; i--) {
                        bp = (i_x[i] + i_y[i] * width) * 3;
                        o_rgb[i * 3 + 0] = (ref[bp + 0] & 0xff);// R
                        o_rgb[i * 3 + 1] = (ref[bp + 1] & 0xff);// G
                        o_rgb[i * 3 + 2] = (ref[bp + 2] & 0xff);// B
                }
        }
}