/*****************************************************************************

 * Copyright (C) 2013-2020 MulticoreWare, Inc

 *

 * Authors: Steve Borho <steve@borho.org>

 *          Min Chen <chenm003@163.com>

 *

 * 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 program; if not, write to the Free Software

 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02111, USA.

 *

 * This program is also available under a commercial proprietary license.

 * For more information, contact us at license @ x265.com.

 *****************************************************************************/

#ifndef X265_MOTIONESTIMATE_H

#define X265_MOTIONESTIMATE_H

#include "primitives.h"

#include "reference.h"

#include "mv.h"

#include "bitcost.h"

#include "yuv.h"

namespace X265_NS {

// private x265 namespace

class MotionEstimate : public BitCost

{

protected:

    intptr_t blockOffset;

    int ctuAddr;

    int absPartIdx;  // part index of PU, including CU offset within CTU

    int searchMethod;

    int searchMethodL0;

    int searchMethodL1;

    int subpelRefine;

    int blockwidth;

    int blockheight;

    pixelcmp_t sad;

    pixelcmp_x3_t sad_x3;

    pixelcmp_x4_t sad_x4;

    pixelcmp_ads_t ads;

    pixelcmp_t satd;

    pixelcmp_t chromaSatd;

    MotionEstimate& operator =(const MotionEstimate&);

public:

    static const int COST_MAX = 1 << 28;

    uint32_t* integral[INTEGRAL_PLANE_NUM];

    Yuv fencPUYuv;

    int partEnum;

    bool bChromaSATD;

    MotionEstimate();

    ~MotionEstimate();

    static void initScales();

    static int hpelIterationCount(int subme);

    void init(int csp);

    /* Methods called at slice setup */

    void setSourcePU(pixel *fencY, intptr_t stride, intptr_t offset, int pwidth, int pheight, const int searchMethod, const int searchL0, const int searchL1, const int subpelRefine);

    void setSourcePU(const Yuv& srcFencYuv, int ctuAddr, int cuPartIdx, int puPartIdx, int pwidth, int pheight, const int searchMethod, const int subpelRefine, bool bChroma);

    /* buf*() and motionEstimate() methods all use cached fenc pixels and thus

     * require setSourcePU() to be called prior. */

    inline int bufSAD(const pixel* fref, intptr_t stride)  { return sad(fencPUYuv.m_buf[0], FENC_STRIDE, fref, stride); }

    inline int bufSATD(const pixel* fref, intptr_t stride) { return satd(fencPUYuv.m_buf[0], FENC_STRIDE, fref, stride); }

    inline int bufChromaSATD(const Yuv& refYuv, int puPartIdx)

    {

        return chromaSatd(refYuv.getCbAddr(puPartIdx), refYuv.m_csize, fencPUYuv.m_buf[1], fencPUYuv.m_csize) +

               chromaSatd(refYuv.getCrAddr(puPartIdx), refYuv.m_csize, fencPUYuv.m_buf[2], fencPUYuv.m_csize);

    }

    void refineMV(ReferencePlanes* ref, const MV& mvmin, const MV& mvmax, const MV& qmvp, MV& outQMv);

    int motionEstimate(ReferencePlanes* ref, const MV & mvmin, const MV & mvmax, const MV & qmvp, int numCandidates, const MV * mvc, int merange, MV & outQMv, uint32_t maxSlices, pixel *srcReferencePlane = 0);

    int subpelCompare(ReferencePlanes* ref, const MV &qmv, pixelcmp_t);

protected:

    inline void StarPatternSearch(ReferencePlanes *ref,

                                  const MV &       mvmin,

                                  const MV &       mvmax,

                                  MV &             bmv,

                                  int &            bcost,

                                  int &            bPointNr,

                                  int &            bDistance,

                                  int              earlyExitIters,

                                  int              merange,

                                  int              hme);

};

}

#endif // ifndef X265_MOTIONESTIMATE_H