/* ***** BEGIN LICENSE BLOCK *****
*
* $Id: sad.h,v 1.2 2004/11/22 13:42:33 asuraparaju Exp $ $Name: Dirac_0_7_0 $
*
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License
* Version 1.1 (the "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for
* the specific language governing rights and limitations under the License.
*
* The Original Code is BBC Research and Development code.
*
* The Initial Developer of the Original Code is the British Broadcasting
* Corporation.
* Portions created by the Initial Developer are Copyright (C) 2004.
* All Rights Reserved.
*
* Contributor(s): Chris Bowley (Original Author)
*
* Alternatively, the contents of this file may be used under the terms of
* the GNU General Public License Version 2 (the "GPL"), or the GNU Lesser
* Public License Version 2.1 (the "LGPL"), in which case the provisions of
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* ***** END LICENSE BLOCK ***** */

#ifndef _SAD_H_
#define _SAD_H_

#include <util/instrumentation/libdirac_instrument/draw_overlay.h>
using dirac::TwoDArray;
using dirac::MvCostData;
using dirac::PredMode;

namespace dirac_instr
{
    //! Class to carry out overlay of SAD block values
    /*
        Sub-class of DrawOverlay.
    */
    class DrawSad : public DrawOverlay
    {
    public :
        //! Constructor
        /*
            Calls DrawOverlay constructor
        */
        DrawSad(Frame &, DrawFrameMotionParams &, const TwoDArray<MvCostData> &, const TwoDArray<PredMode>&, int);
        //! Destructor
        ~DrawSad();

        ////////////////////////////////////////////////////////////
        //                                                        //
        //    Assumes default copy constructor and assignment =   //
        //                                                        //
        ////////////////////////////////////////////////////////////

        //! Colours a single motion vector block
        /*
            SAD value is represented by colour
            Intra coding is also displayed using a white box
        */
        void DrawBlock(int, int);
        
        //! Draws power bar legend
        void DrawLegend();
        
    private :
        //! Maximum SAD value represented
        int m_scale;
        
        //! Cost array of blocks for chosen reference
        const TwoDArray<MvCostData> & m_cost;

        const TwoDArray<PredMode> & m_mode;
    };

} // namespace dirac_instr

#endif