/* 
 * PROJECT: NyARToolkitCS
 * --------------------------------------------------------------------------------
 * 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 NyARToolkitCS is C# version NyARToolkit 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>
 * 
 */
using System;
using System.Collections.Generic;

namespace jp.nyatla.nyartoolkit.cs.raster
{
    public class NyARRaster_BGRA : NyARRaster
    {
        private byte[] ref_buf;
        private int width;
        private int height;
        public static NyARRaster_BGRA wrap(byte[] i_buffer,int i_width,int i_height)
        {
            NyARRaster_BGRA new_inst=new NyARRaster_BGRA();
            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)
        {
            int bp=(i_x+i_y*this.width)*4;
            byte[] _ref=this.ref_buf;
            return _ref[bp] + _ref[bp + 1] +_ref[bp + 2];
        }
        public void getPixelTotalRowLine(int i_row,int[] o_line)
        {
            byte[] _ref= this.ref_buf;
            int bp=(i_row+1)*this.width*4-4;
            for(int i=this.width-1;i>=0;i--){
	            o_line[i]=_ref[bp]+_ref[bp+1]+_ref[bp+2];
	            bp-=4;
	        }
        }
        public int getWidth()
        {
            return width;
        }
        public int getHeight()
        {
	    return height;
        }
        public void getPixel(int i_x,int i_y,int[] i_rgb)
        {
	        byte[] _ref=this.ref_buf;
            int bp=(i_x+i_y*this.width)*4;
            i_rgb[0]=_ref[bp+2];//R
            i_rgb[1]=_ref[bp+1];//G
            i_rgb[2]=_ref[bp + 0];//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)*4;
	            o_rgb[i*3+0]=_ref[bp+2];//R
	            o_rgb[i*3+1]=_ref[bp+1];//G
                o_rgb[i * 3 + 2] = _ref[bp + 0];//B
	        }	
        }
    }
}
