/* -----------------------------------------------------------------------------
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other Intellectual Property Rights other than the copyrights concerning 
the Software are granted under this license.

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Copyright (c) 2019-2024, Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. & The VVenC Authors.
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------------------------------------------------------------------------------------------- */
/**
 * \file
 * \brief Implementation of AffineGradientSearch class
 */
//#define USE_AVX2
// ====================================================================================================================
// Includes
// ====================================================================================================================

#include "CommonDefX86.h"
#include "../AffineGradientSearch.h"

//! \ingroup CommonLib
//! \{

#ifdef TARGET_SIMD_X86

namespace vvenc {

  template<X86_VEXT vext>
  static void simdHorizontalSobelFilter(Pel* const pPred, const int predStride, Pel *const pDerivate, const int derivateBufStride, const int width, const int height)
  {
    CHECK( width % 8, "Invalid size!" );

    // pPred is 10-bit

    // -1 0 1
    // -2 0 2
    // -1 0 1
    // 
    // sum( sobel ) = 8, i.e. 4-bit extension

    for( int y = 1; y < ( height - 1 ); y++ )
    {
      int x = 1;
      for( ; x < ( width - 8 ); x += 8 )
      {
        __m128i acc = _mm_loadu_si128( ( const __m128i* ) &pPred[y * predStride + x - 1] );
        acc         = _mm_sub_epi16( _mm_loadu_si128( ( const __m128i* ) &pPred[y * predStride + x + 1] ), acc );
        acc         = _mm_slli_epi16( acc, 1 );
        acc         = _mm_sub_epi16( acc, _mm_loadu_si128( ( const __m128i* ) &pPred[( y - 1 ) * predStride + x - 1] ) );
        acc         = _mm_add_epi16( acc, _mm_loadu_si128( ( const __m128i* ) &pPred[( y - 1 ) * predStride + x + 1] ) );
        acc         = _mm_sub_epi16( acc, _mm_loadu_si128( ( const __m128i* ) &pPred[( y + 1 ) * predStride + x - 1] ) );
        acc         = _mm_add_epi16( acc, _mm_loadu_si128( ( const __m128i* ) &pPred[( y + 1 ) * predStride + x + 1] ) );

        _mm_storeu_si128( ( __m128i* ) &pDerivate[y * derivateBufStride + x], acc );
      }

      __m128i acc = _mm_loadu_si128( ( const __m128i* ) &pPred[y * predStride + x - 1] );
      acc         = _mm_sub_epi16( _mm_loadu_si128( ( const __m128i* ) &pPred[y * predStride + x + 1] ), acc );
      acc         = _mm_slli_epi16( acc, 1 );
      acc         = _mm_sub_epi16( acc, _mm_loadu_si128( ( const __m128i* ) &pPred[( y - 1 ) * predStride + x - 1] ) );
      acc         = _mm_add_epi16( acc, _mm_loadu_si128( ( const __m128i* ) &pPred[( y - 1 ) * predStride + x + 1] ) );
      acc         = _mm_sub_epi16( acc, _mm_loadu_si128( ( const __m128i* ) &pPred[( y + 1 ) * predStride + x - 1] ) );
      acc         = _mm_add_epi16( acc, _mm_loadu_si128( ( const __m128i* ) &pPred[( y + 1 ) * predStride + x + 1] ) );

      _mm_storel_epi64( ( __m128i* ) &pDerivate[y * derivateBufStride + x],                         acc );
      _mm_storeu_si32 (              &pDerivate[y * derivateBufStride + x + 4], _mm_unpackhi_epi64( acc, acc ) );

      pDerivate[y * derivateBufStride]               = pDerivate[y * derivateBufStride + 1];
      pDerivate[y * derivateBufStride + (width - 1)] = pDerivate[y * derivateBufStride + (width - 2)];
    }

    memcpy( pDerivate,                                      pDerivate + derivateBufStride,                  width * sizeof( pDerivate[ 0 ] ) );
    memcpy( pDerivate + ( height - 1 ) * derivateBufStride, pDerivate + ( height - 2 ) * derivateBufStride, width * sizeof( pDerivate[ 0 ] ) );
  }

  template<X86_VEXT vext>
  static void simdVerticalSobelFilter(Pel* const pPred, const int predStride, Pel *const pDerivate, const int derivateBufStride, const int width, const int height)
  {
    CHECK( width % 8, "Invalid size!" );

    // pPred is 10-bit

    // -1 -2 -1
    //  0  0  0
    //  1  2  1
    // 
    // sum( sobel ) = 8, i.e. 4-bit extension

    for( int y = 1; y < ( height - 1 ); y++ )
    {
      int x = 1;
      for( ; x < ( width - 8 ); x += 8 )
      {
        __m128i acc = _mm_loadu_si128( ( const __m128i* ) &pPred[( y - 1 ) * predStride + x] );
        acc         = _mm_sub_epi16( _mm_loadu_si128( ( const __m128i* ) &pPred[( y + 1 ) * predStride + x] ), acc );
        acc         = _mm_slli_epi16( acc, 1 );
        acc         = _mm_sub_epi16( acc, _mm_loadu_si128( ( const __m128i* ) &pPred[( y - 1 ) * predStride + x - 1] ) );
        acc         = _mm_sub_epi16( acc, _mm_loadu_si128( ( const __m128i* ) &pPred[( y - 1 ) * predStride + x + 1] ) );
        acc         = _mm_add_epi16( acc, _mm_loadu_si128( ( const __m128i* ) &pPred[( y + 1 ) * predStride + x - 1] ) );
        acc         = _mm_add_epi16( acc, _mm_loadu_si128( ( const __m128i* ) &pPred[( y + 1 ) * predStride + x + 1] ) );

        _mm_storeu_si128( ( __m128i* ) &pDerivate[y * derivateBufStride + x], acc );
      }
      
      __m128i acc = _mm_loadu_si128( ( const __m128i* ) &pPred[( y - 1 ) * predStride + x] );
      acc         = _mm_sub_epi16( _mm_loadu_si128( ( const __m128i* ) &pPred[( y + 1 ) * predStride + x] ), acc );
      acc         = _mm_slli_epi16( acc, 1 );
      acc         = _mm_sub_epi16( acc, _mm_loadu_si128( ( const __m128i* ) &pPred[( y - 1 ) * predStride + x - 1] ) );
      acc         = _mm_sub_epi16( acc, _mm_loadu_si128( ( const __m128i* ) &pPred[( y - 1 ) * predStride + x + 1] ) );
      acc         = _mm_add_epi16( acc, _mm_loadu_si128( ( const __m128i* ) &pPred[( y + 1 ) * predStride + x - 1] ) );
      acc         = _mm_add_epi16( acc, _mm_loadu_si128( ( const __m128i* ) &pPred[( y + 1 ) * predStride + x + 1] ) );

      _mm_storel_epi64( ( __m128i* ) &pDerivate[y * derivateBufStride + x],                         acc );
      _mm_storeu_si32 (              &pDerivate[y * derivateBufStride + x + 4], _mm_unpackhi_epi64( acc, acc ) );

      pDerivate[y * derivateBufStride]               = pDerivate[y * derivateBufStride + 1];
      pDerivate[y * derivateBufStride + (width - 1)] = pDerivate[y * derivateBufStride + (width - 2)];
    }

    memcpy( pDerivate,                                    pDerivate + derivateBufStride,                width * sizeof( pDerivate[ 0 ] ) );
    memcpy( pDerivate + (height - 1) * derivateBufStride, pDerivate + (height - 2) * derivateBufStride, width * sizeof( pDerivate[ 0 ] ) );
  }



#define CALC_EQUAL_COEFF_8PXLS(x1,x2,y1,y2,tmp0,tmp1,tmp2,tmp3,inter0,inter1,inter2,inter3,loadLocation)       \
{                                                                                                              \
inter0 = _mm_mul_epi32(x1, y1);                                                                                \
inter1 = _mm_mul_epi32(tmp0, tmp2);                                                                            \
inter2 = _mm_mul_epi32(x2, y2);                                                                                \
inter3 = _mm_mul_epi32(tmp1, tmp3);                                                                            \
inter2 = _mm_add_epi64(inter0, inter2);                                                                        \
inter3 = _mm_add_epi64(inter1, inter3);                                                                        \
inter0 = _mm_loadl_epi64(loadLocation);                                                                        \
inter3 = _mm_add_epi64(inter2, inter3);                                                                        \
inter1 = _mm_srli_si128(inter3, 8);                                                                            \
inter3 = _mm_add_epi64(inter1, inter3);                                                                        \
inter3 = _mm_add_epi64(inter0, inter3);                                                                        \
}

  template<X86_VEXT vext, bool b6Param>
  static void simdEqualCoeffComputer(Pel* const pResidue, const int residueStride, Pel **const ppDerivate, const int derivateBufStride, const int width, const int height, int64_t(*pEqualCoeff)[7])
  {
    __m128i mmFour;
    __m128i mmTmp[4];
    __m128i mmIntermediate[4];
    __m128i mmIndxK, mmIndxJ;
    __m128i mmResidue[2];
    __m128i mmC[12];

    // Add directly to indexes to get new index
    mmFour  = _mm_set1_epi32(4);
    mmIndxJ = _mm_set1_epi32(-2);


    static constexpr int n = b6Param ? 6 : 4;
    int idx1 = -2 * derivateBufStride - 4;
    int idx2 = -    derivateBufStride - 4;

    for (int j = 0; j < height; j += 2)
    {
      if (!(j & 3))
        mmIndxJ = _mm_add_epi32(mmIndxJ, mmFour);
      mmIndxK = _mm_set1_epi32(-2);
      idx1 += (derivateBufStride << 1);
      idx2 += (derivateBufStride << 1);

      for (int k = 0; k < width; k += 4)
      {
        idx1 += 4;
        idx2 += 4;
        mmIndxK = _mm_add_epi32(mmIndxK, mmFour);

        if (b6Param)
        {
          // mmC[0-5] for iC[0-5] of 1st row of pixels
          mmC[0] = _mm_cvtepi16_epi32(_mm_loadl_epi64((const __m128i*)&ppDerivate[0][idx1]));
          mmC[2] = _mm_cvtepi16_epi32(_mm_loadl_epi64((const __m128i*)&ppDerivate[1][idx1]));
          mmC[1] = _mm_mullo_epi32(mmIndxK, mmC[0]);
          mmC[3] = _mm_mullo_epi32(mmIndxK, mmC[2]);
          mmC[4] = _mm_mullo_epi32(mmIndxJ, mmC[0]);
          mmC[5] = _mm_mullo_epi32(mmIndxJ, mmC[2]);

          // mmC[6-11] for iC[0-5] of 2nd row of pixels
          mmC[6] = _mm_cvtepi16_epi32(_mm_loadl_epi64((const __m128i*)&ppDerivate[0][idx2]));
          mmC[8] = _mm_cvtepi16_epi32(_mm_loadl_epi64((const __m128i*)&ppDerivate[1][idx2]));
          mmC[7] = _mm_mullo_epi32(mmIndxK, mmC[6]);
          mmC[9] = _mm_mullo_epi32(mmIndxK, mmC[8]);
          mmC[10] = _mm_mullo_epi32(mmIndxJ, mmC[6]);
          mmC[11] = _mm_mullo_epi32(mmIndxJ, mmC[8]);
        }
        else
        {
          // mmC[0-3] for iC[0-3] of 1st row of pixels
          mmC[0] = _mm_cvtepi16_epi32(_mm_loadl_epi64((const __m128i*)&ppDerivate[0][idx1]));
          mmC[2] = _mm_cvtepi16_epi32(_mm_loadl_epi64((const __m128i*)&ppDerivate[1][idx1]));
          mmC[1] = _mm_mullo_epi32(mmIndxK, mmC[0]);
          mmC[3] = _mm_mullo_epi32(mmIndxJ, mmC[0]);
          mmTmp[0] = _mm_mullo_epi32(mmIndxJ, mmC[2]);
          mmTmp[1] = _mm_mullo_epi32(mmIndxK, mmC[2]);
          mmC[1] = _mm_add_epi32(mmC[1], mmTmp[0]);
          mmC[3] = _mm_sub_epi32(mmC[3], mmTmp[1]);

          // mmC[4-7] for iC[0-3] of 1st row of pixels
          mmC[4] = _mm_cvtepi16_epi32(_mm_loadl_epi64((const __m128i*)&ppDerivate[0][idx2]));
          mmC[6] = _mm_cvtepi16_epi32(_mm_loadl_epi64((const __m128i*)&ppDerivate[1][idx2]));
          mmC[5] = _mm_mullo_epi32(mmIndxK, mmC[4]);
          mmC[7] = _mm_mullo_epi32(mmIndxJ, mmC[4]);
          mmTmp[2] = _mm_mullo_epi32(mmIndxJ, mmC[6]);
          mmTmp[3] = _mm_mullo_epi32(mmIndxK, mmC[6]);
          mmC[5] = _mm_add_epi32(mmC[5], mmTmp[2]);
          mmC[7] = _mm_sub_epi32(mmC[7], mmTmp[3]);
        }

        // Residue
        mmResidue[0] = _mm_loadl_epi64((const __m128i*)&pResidue[idx1]);
        mmResidue[1] = _mm_loadl_epi64((const __m128i*)&pResidue[idx2]);
        mmResidue[0] = _mm_cvtepi16_epi32(mmResidue[0]);
        mmResidue[1] = _mm_cvtepi16_epi32(mmResidue[1]);
        mmResidue[0] = _mm_slli_epi32(mmResidue[0], 3);
        mmResidue[1] = _mm_slli_epi32(mmResidue[1], 3);

        // Calculation of coefficient matrix
        for (int col = 0; col < n; col++)
        {
          mmTmp[0] = _mm_srli_si128(mmC[0 + col], 4);
          mmTmp[1] = _mm_srli_si128(mmC[n + col], 4);
          CALC_EQUAL_COEFF_8PXLS(mmC[0 + col], mmC[n + col], mmC[0 + col], mmC[n + col], mmTmp[0], mmTmp[1], mmTmp[0], mmTmp[1], mmIntermediate[0], mmIntermediate[1], mmIntermediate[2], mmIntermediate[3], (const __m128i*)&pEqualCoeff[col + 1][col]);
          _mm_storel_epi64((__m128i*)&pEqualCoeff[col + 1][col], mmIntermediate[3]);

          for (int row = col + 1; row < n; row++)
          {
            mmTmp[2] = _mm_srli_si128(mmC[0 + row], 4);
            mmTmp[3] = _mm_srli_si128(mmC[n + row], 4);
            CALC_EQUAL_COEFF_8PXLS(mmC[0 + col], mmC[n + col], mmC[0 + row], mmC[n + row], mmTmp[0], mmTmp[1], mmTmp[2], mmTmp[3], mmIntermediate[0], mmIntermediate[1], mmIntermediate[2], mmIntermediate[3], (const __m128i*)&pEqualCoeff[col + 1][row]);
            _mm_storel_epi64((__m128i*)&pEqualCoeff[col + 1][row], mmIntermediate[3]);
            _mm_storel_epi64((__m128i*)&pEqualCoeff[row + 1][col], mmIntermediate[3]);
          }

          mmTmp[2] = _mm_srli_si128(mmResidue[0], 4);
          mmTmp[3] = _mm_srli_si128(mmResidue[1], 4);
          CALC_EQUAL_COEFF_8PXLS(mmC[0 + col], mmC[n + col], mmResidue[0], mmResidue[1], mmTmp[0], mmTmp[1], mmTmp[2], mmTmp[3], mmIntermediate[0], mmIntermediate[1], mmIntermediate[2], mmIntermediate[3], (const __m128i*)&pEqualCoeff[col + 1][n]);
          _mm_storel_epi64((__m128i*)&pEqualCoeff[col + 1][n], mmIntermediate[3]);
        }
      }

      idx1 -= (width);
      idx2 -= (width);
    }
  }

#if USE_AVX2

#define CALC_EQUAL_COEFF_8PXLS_AVX2(x1,x2,y1,y2,tmp0,tmp1,tmp2,tmp3,inter0,inter1,inter2,inter3,res,loadLocation)  \
{                                                                                                                  \
inter0 = _mm256_mul_epi32(x1, y1);                                                                                 \
inter1 = _mm256_mul_epi32(tmp0, tmp2);                                                                             \
inter2 = _mm256_mul_epi32(x2, y2);                                                                                 \
inter3 = _mm256_mul_epi32(tmp1, tmp3);                                                                             \
inter2 = _mm256_add_epi64(inter0, inter2);                                                                         \
inter3 = _mm256_add_epi64(inter1, inter3);                                                                         \
res    = _mm_loadl_epi64(loadLocation);                                                                            \
inter3 = _mm256_add_epi64(inter2, inter3);                                                                         \
inter1 = _mm256_srli_si256(inter3, 8);                                                                             \
inter3 = _mm256_add_epi64(inter1, inter3);                                                                         \
res    = _mm_add_epi64(res, _mm256_castsi256_si128(inter3));                                                       \
res    = _mm_add_epi64(res, _mm256_extracti128_si256(inter3, 1));                                                  \
}

  template<bool b6Param>
  static void simdEqualCoeffComputer_avx2(Pel* const pResidue, const int residueStride, Pel **const ppDerivate, const int derivateBufStride, const int width, const int height, int64_t(*pEqualCoeff)[7])
  {
    __m256i mmFour;
    __m256i mmTmp[4];
    __m256i mmIntermediate[4];
    __m256i mmIndxK, mmIndxJ;
    __m256i mmResidue[2];
    __m256i mmC[12];
    __m128i mmRes;

    // Add directly to indexes to get new index
    mmFour  = _mm256_set1_epi32(4);
    mmIndxJ = _mm256_set1_epi32(-2);

    static constexpr int n = b6Param ? 6 : 4;
    int idx1 = -2 * derivateBufStride - 8;
    int idx2 = -    derivateBufStride - 8;

    for (int j = 0; j < height; j += 2)
    {
      if (!(j & 3))
        mmIndxJ = _mm256_add_epi32(mmIndxJ, mmFour);
      mmIndxK = _mm256_inserti128_si256( _mm256_castsi128_si256( _mm_set1_epi32( -6 ) ), _mm_set1_epi32( -2 ), 1 );
      idx1 += (derivateBufStride << 1);
      idx2 += (derivateBufStride << 1);

      for (int k = 0; k < width; k += 8)
      {
        idx1 += 8;
        idx2 += 8;
        mmIndxK = _mm256_add_epi32(mmIndxK, mmFour);
        mmIndxK = _mm256_add_epi32(mmIndxK, mmFour);

        if (b6Param)
        {
          // mmC[0-5] for iC[0-5] of 1st row of pixels
          mmC[0] = _mm256_cvtepi16_epi32(_mm_loadu_si128((const __m128i*)&ppDerivate[0][idx1]));
          mmC[2] = _mm256_cvtepi16_epi32(_mm_loadu_si128((const __m128i*)&ppDerivate[1][idx1]));
          mmC[1] = _mm256_mullo_epi32(mmIndxK, mmC[0]);
          mmC[3] = _mm256_mullo_epi32(mmIndxK, mmC[2]);
          mmC[4] = _mm256_mullo_epi32(mmIndxJ, mmC[0]);
          mmC[5] = _mm256_mullo_epi32(mmIndxJ, mmC[2]);
        
          // mmC[6-11] for iC[0-5] of 2nd row of pixels
          mmC[6] = _mm256_cvtepi16_epi32(_mm_loadu_si128((const __m128i*)&ppDerivate[0][idx2]));
          mmC[8] = _mm256_cvtepi16_epi32(_mm_loadu_si128((const __m128i*)&ppDerivate[1][idx2]));
          mmC[7] = _mm256_mullo_epi32(mmIndxK, mmC[6]);
          mmC[9] = _mm256_mullo_epi32(mmIndxK, mmC[8]);
          mmC[10] = _mm256_mullo_epi32(mmIndxJ, mmC[6]);
          mmC[11] = _mm256_mullo_epi32(mmIndxJ, mmC[8]);
        }
        else
        {
          // mmC[0-3] for iC[0-3] of 1st row of pixels
          mmC[0] = _mm256_cvtepi16_epi32(_mm_loadu_si128((const __m128i*)&ppDerivate[0][idx1]));
          mmC[2] = _mm256_cvtepi16_epi32(_mm_loadu_si128((const __m128i*)&ppDerivate[1][idx1]));
          mmC[1] = _mm256_mullo_epi32(mmIndxK, mmC[0]);
          mmC[3] = _mm256_mullo_epi32(mmIndxJ, mmC[0]);
          mmTmp[0] = _mm256_mullo_epi32(mmIndxJ, mmC[2]);
          mmTmp[1] = _mm256_mullo_epi32(mmIndxK, mmC[2]);
          mmC[1] = _mm256_add_epi32(mmC[1], mmTmp[0]);
          mmC[3] = _mm256_sub_epi32(mmC[3], mmTmp[1]);

          // mmC[4-7] for iC[0-3] of 1st row of pixels
          mmC[4] = _mm256_cvtepi16_epi32(_mm_loadu_si128((const __m128i*)&ppDerivate[0][idx2]));
          mmC[6] = _mm256_cvtepi16_epi32(_mm_loadu_si128((const __m128i*)&ppDerivate[1][idx2]));
          mmC[5] = _mm256_mullo_epi32(mmIndxK, mmC[4]);
          mmC[7] = _mm256_mullo_epi32(mmIndxJ, mmC[4]);
          mmTmp[2] = _mm256_mullo_epi32(mmIndxJ, mmC[6]);
          mmTmp[3] = _mm256_mullo_epi32(mmIndxK, mmC[6]);
          mmC[5] = _mm256_add_epi32(mmC[5], mmTmp[2]);
          mmC[7] = _mm256_sub_epi32(mmC[7], mmTmp[3]);
        }

        // Residue
        mmResidue[0] = _mm256_cvtepi16_epi32(_mm_loadu_si128((const __m128i*)&pResidue[idx1]));
        mmResidue[1] = _mm256_cvtepi16_epi32(_mm_loadu_si128((const __m128i*)&pResidue[idx2]));
        mmResidue[0] = _mm256_slli_epi32(mmResidue[0], 3);
        mmResidue[1] = _mm256_slli_epi32(mmResidue[1], 3);

        // Calculation of coefficient matrix
        for (int col = 0; col < n; col++)
        {
          mmTmp[0] = _mm256_srli_si256(mmC[0 + col], 4);
          mmTmp[1] = _mm256_srli_si256(mmC[n + col], 4);
          CALC_EQUAL_COEFF_8PXLS_AVX2(mmC[0 + col], mmC[n + col], mmC[0 + col], mmC[n + col], mmTmp[0], mmTmp[1], mmTmp[0], mmTmp[1], mmIntermediate[0], mmIntermediate[1], mmIntermediate[2], mmIntermediate[3], mmRes, (const __m128i*)&pEqualCoeff[col + 1][col]);
          _mm_storel_epi64((__m128i*)&pEqualCoeff[col + 1][col], mmRes);

          for (int row = col + 1; row < n; row++)
          {
            mmTmp[2] = _mm256_srli_si256(mmC[0 + row], 4);
            mmTmp[3] = _mm256_srli_si256(mmC[n + row], 4);
            CALC_EQUAL_COEFF_8PXLS_AVX2(mmC[0 + col], mmC[n + col], mmC[0 + row], mmC[n + row], mmTmp[0], mmTmp[1], mmTmp[2], mmTmp[3], mmIntermediate[0], mmIntermediate[1], mmIntermediate[2], mmIntermediate[3], mmRes, (const __m128i*)&pEqualCoeff[col + 1][row]);
            _mm_storel_epi64((__m128i*)&pEqualCoeff[col + 1][row], mmRes);
            _mm_storel_epi64((__m128i*)&pEqualCoeff[row + 1][col], mmRes);
          }

          mmTmp[2] = _mm256_srli_si256(mmResidue[0], 4);
          mmTmp[3] = _mm256_srli_si256(mmResidue[1], 4);
          CALC_EQUAL_COEFF_8PXLS_AVX2(mmC[0 + col], mmC[n + col], mmResidue[0], mmResidue[1], mmTmp[0], mmTmp[1], mmTmp[2], mmTmp[3], mmIntermediate[0], mmIntermediate[1], mmIntermediate[2], mmIntermediate[3], mmRes, (const __m128i*)&pEqualCoeff[col + 1][n]);
          _mm_storel_epi64((__m128i*)&pEqualCoeff[col + 1][n], mmRes);
        }
      }

      idx1 -= (width);
      idx2 -= (width);
    }
  }
#endif

  template <X86_VEXT vext>
  void AffineGradientSearch::_initAffineGradientSearchX86()
  {
    m_HorizontalSobelFilter = simdHorizontalSobelFilter<vext>;
    m_VerticalSobelFilter   = simdVerticalSobelFilter<vext>;
#if USE_AVX2
    m_EqualCoeffComputer[0] = simdEqualCoeffComputer_avx2<false>;
    m_EqualCoeffComputer[1] = simdEqualCoeffComputer_avx2<true>;
#else
    m_EqualCoeffComputer[0] = simdEqualCoeffComputer<vext, false>;
    m_EqualCoeffComputer[1] = simdEqualCoeffComputer<vext, true>;
#endif
  }

  template void AffineGradientSearch::_initAffineGradientSearchX86<SIMDX86>();

}

#endif //#ifdef TARGET_SIMD_X86
//! \}
