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/** \file     TrQuant_EMT.cpp

    \brief    transform and quantization class

*/

#include "TrQuant_EMT.h"

#include "Rom.h"

#include <memory.h>

namespace vvdec

{

template<int uiTrSize>

inline void _fastInverseMM( const TCoeff *src, TCoeff *dst, int shift, int line, int iSkipLine, int iSkipLine2, bool clip, const TCoeff outputMinimum, const TCoeff outputMaximum, const TMatrixCoeff* iT );

template<>

inline void _fastInverseMM<2>( const TCoeff *src, TCoeff *dst, int shift, int line, int iSkipLine, int iSkipLine2, bool clip, const TCoeff outputMinimum, const TCoeff outputMaximum, const TMatrixCoeff* iT )

{

  const int rnd_factor  = 1 << (shift - 1);

  const int reducedLine = line - iSkipLine;

  const int cutoff      = 2 - iSkipLine2;

  memset( dst, 0, reducedLine * 2 * sizeof( TCoeff ) );

  for( int k = 0; k < cutoff; k++ )

  {

    const TCoeff* srcPtr = &src[k * line];

    for( int i = 0; i < reducedLine; i++ )

    {

            TCoeff*       dstPtr = &dst[i << 1];

      const TMatrixCoeff*  itPtr =  &iT[k << 1];

      const TCoeff        srcVal = *srcPtr;

      for( int j = 0; j < 2; j++ )

      {

        *dstPtr++ += srcVal * *itPtr++;

      }

      srcPtr++;

    }

  }

  if( clip )

  {

    for( int i = 0; i < reducedLine; i++ )

    {

      TCoeff* dstPtr = &dst[i << 1];

      for( int j = 0; j < 2; j++, dstPtr++ )

      {

        *dstPtr = Clip3( outputMinimum, outputMaximum, ( int ) ( *dstPtr + rnd_factor ) >> shift );

      }

    }

  }

  if( iSkipLine )

  {

    memset( dst + ( reducedLine << 1 ), 0, ( iSkipLine << 1 ) * sizeof( TCoeff ) );

  }

}

template<int uiTrSize>

inline void _fastInverseMM( const TCoeff *src, TCoeff *dst, int shift, int line, int iSkipLine, int iSkipLine2, bool clip, const TCoeff outputMinimum, const TCoeff outputMaximum, const TMatrixCoeff* iT )

{

  const int  rnd_factor  = 1 << (shift - 1);

  const int  reducedLine = line - iSkipLine;

  const int  cutoff      = uiTrSize - iSkipLine2;

  memset( dst, 0, line * uiTrSize * sizeof( TCoeff ) );

  g_tCoeffOps.fastInvCore[getLog2( uiTrSize ) - 2]( iT, src, dst, line, reducedLine, cutoff );

  if( clip )

  {

    if( uiTrSize == 4 )

      g_tCoeffOps.roundClip4( dst, uiTrSize, reducedLine, uiTrSize, outputMinimum, outputMaximum, rnd_factor, shift );

    else

      g_tCoeffOps.roundClip8( dst, uiTrSize, reducedLine, uiTrSize, outputMinimum, outputMaximum, rnd_factor, shift );

  }

}

Unexecuted instantiation: void vvdec::_fastInverseMM<8>(int const*, int*, int, int, int, int, bool, int, int, short const*)

Unexecuted instantiation: void vvdec::_fastInverseMM<16>(int const*, int*, int, int, int, int, bool, int, int, short const*)

Unexecuted instantiation: void vvdec::_fastInverseMM<32>(int const*, int*, int, int, int, int, bool, int, int, short const*)

Unexecuted instantiation: void vvdec::_fastInverseMM<64>(int const*, int*, int, int, int, int, bool, int, int, short const*)

Unexecuted instantiation: void vvdec::_fastInverseMM<4>(int const*, int*, int, int, int, int, bool, int, int, short const*)

// ********************************** DCT-II **********************************

//Fast DCT-II transforms

void fastInverseDCT2_B2(const TCoeff *src, TCoeff *dst, int shift, int line, int iSkipLine, int iSkipLine2, bool clip, const TCoeff outputMinimum, const TCoeff outputMaximum)

{

  int j;

  int E, O;

  int add = 1 << (shift - 1);

  TCoeff* dstOrg = dst;

  const TMatrixCoeff *iT = g_trCoreDCT2P2[0];

  const int  reducedLine = line - iSkipLine;

  for (j = 0; j<reducedLine; j++)

  {

    /* Utilizing symmetry properties to the maximum to minimize the number of multiplications */

    E = iT[0] * (src[0] + src[line]);

    O = iT[2] * (src[0] - src[line]);

    /* Combining even and odd terms at each hierarchy levels to calculate the final spatial domain vector */

    dst[0] = E;

    dst[1] = O;

    src++;

    dst += 2;

  }

  if( clip )

  {

    for( int i = 0; i < reducedLine; i++ )

    {

      TCoeff* dstPtr = &dstOrg[i << 1];

      for( int j = 0; j < 2; j++, dstPtr++ )

      {

        *dstPtr = Clip3( outputMinimum, outputMaximum, ( int ) ( *dstPtr + add ) >> shift );

      }

    }

  }

  if (iSkipLine)

  {

    memset(dst, 0, (iSkipLine << 1) * sizeof(TCoeff));

  }

}

/** 4x4 inverse transform implemented using partial butterfly structure (1D)

*  \param src   input data (transform coefficients)

*  \param dst   output data (residual)

*  \param shift specifies right shift after 1D transform

*  \param line

*  \param outputMinimum  minimum for clipping

*  \param outputMaximum  maximum for clipping

*/

void fastInverseDCT2_B4( const TCoeff *src, TCoeff *dst, int shift, int line, int iSkipLine, int iSkipLine2, bool clip, const TCoeff outputMinimum, const TCoeff outputMaximum )

{

#if 0

  const TMatrixCoeff *iT = g_trCoreDCT2P4[0];

  _fastInverseMM<4>( src, dst, shift, line, iSkipLine, iSkipLine2, outputMinimum, outputMaximum, iT );

#else

  int j;

  int E[2], O[2];

  int add = 1 << ( shift - 1 );

  const TMatrixCoeff *iT = g_trCoreDCT2P4[0];

  TCoeff* orgDst = dst;

  const int  reducedLine = line - iSkipLine;

  for( j = 0; j < reducedLine; j++ )

  {

    /* Utilizing symmetry properties to the maximum to minimize the number of multiplications */

    O[0] = iT[1 * 4 + 0] * src[line] + iT[3 * 4 + 0] * src[3 * line];

    O[1] = iT[1 * 4 + 1] * src[line] + iT[3 * 4 + 1] * src[3 * line];

    E[0] = iT[0 * 4 + 0] * src[   0] + iT[2 * 4 + 0] * src[2 * line];

    E[1] = iT[0 * 4 + 1] * src[   0] + iT[2 * 4 + 1] * src[2 * line];

    /* Combining even and odd terms at each hierarchy levels to calculate the final spatial domain vector */

    dst[0] = E[0] + O[0];

    dst[1] = E[1] + O[1];

    dst[2] = E[1] - O[1];

    dst[3] = E[0] - O[0];

    src++;

    dst += 4;

  }

  if( clip )

    g_tCoeffOps.roundClip4( orgDst, 4, reducedLine, 4, outputMinimum, outputMaximum, add, shift );

  if( iSkipLine )

  {

    memset( dst, 0, ( iSkipLine << 2 ) * sizeof( TCoeff ) );

  }

#endif

}

/** 8x8 inverse transform implemented using partial butterfly structure (1D)

*  \param src   input data (transform coefficients)

*  \param dst   output data (residual)

*  \param shift specifies right shift after 1D transform

*  \param line

*  \param outputMinimum  minimum for clipping

*  \param outputMaximum  maximum for clipping

*/

void fastInverseDCT2_B8(const TCoeff *src, TCoeff *dst, int shift, int line, int iSkipLine, int iSkipLine2, bool clip, const TCoeff outputMinimum, const TCoeff outputMaximum)

{

#if 1

  _fastInverseMM<8>( src, dst, shift, line, iSkipLine, iSkipLine2, clip, outputMinimum, outputMaximum, g_trCoreDCT2P8[0] );

#else

  int j, k;

  int E[4], O[4];

  int EE[2], EO[2];

  int add = 1 << (shift - 1);

  const TMatrixCoeff *iT = g_trCoreDCT2P8[0];

  TCoeff *orgDst = dst;

  const int  reducedLine = line - iSkipLine;

  for( j = 0; j < reducedLine; j++ )

  {

    /* Utilizing symmetry properties to the maximum to minimize the number of multiplications */

    for( k = 0; k < 4; k++ )

    {

      O[k] = iT[1 * 8 + k] * src[line] + iT[3 * 8 + k] * src[3 * line] + iT[5 * 8 + k] * src[5 * line] + iT[7 * 8 + k] * src[7 * line];

    }

    EO[0] = iT[2 * 8 + 0] * src[2 * line] + iT[6 * 8 + 0] * src[6 * line];

    EO[1] = iT[2 * 8 + 1] * src[2 * line] + iT[6 * 8 + 1] * src[6 * line];

    EE[0] = iT[0 * 8 + 0] * src[0       ] + iT[4 * 8 + 0] * src[4 * line];

    EE[1] = iT[0 * 8 + 1] * src[0       ] + iT[4 * 8 + 1] * src[4 * line];

    /* Combining even and odd terms at each hierarchy levels to calculate the final spatial domain vector */

    E[0] = EE[0] + EO[0];

    E[3] = EE[0] - EO[0];

    E[1] = EE[1] + EO[1];

    E[2] = EE[1] - EO[1];

    for( k = 0; k < 4; k++ )

    {

      dst[k    ] = E[    k] + O[    k];

      dst[k + 4] = E[3 - k] - O[3 - k];

    }

    src++;

    dst += 8;

  }

  if( clip )

    g_tCoeffOps.roundClip8( orgDst, 8, reducedLine, 8, outputMinimum, outputMaximum, add, shift );

  if( iSkipLine )

  {

    memset( dst, 0, ( iSkipLine << 3 ) * sizeof( TCoeff ) );

  }

#endif

}

/** 16x16 inverse transform implemented using partial butterfly structure (1D)

*  \param src            input data (transform coefficients)

*  \param dst            output data (residual)

*  \param shift          specifies right shift after 1D transform

*  \param line

*  \param outputMinimum  minimum for clipping

*  \param outputMaximum  maximum for clipping

*/

void fastInverseDCT2_B16( const TCoeff *src, TCoeff *dst, int shift, int line, int iSkipLine, int iSkipLine2, bool clip, const TCoeff outputMinimum, const TCoeff outputMaximum )

{

  _fastInverseMM<16>( src, dst, shift, line, iSkipLine, iSkipLine2, clip, outputMinimum, outputMaximum, g_trCoreDCT2P16[0] );

}

/** 32x32 inverse transform implemented using partial butterfly structure (1D)

*  \param src   input data (transform coefficients)

*  \param dst   output data (residual)

*  \param shift specifies right shift after 1D transform

*  \param line

*  \param outputMinimum  minimum for clipping

*  \param outputMaximum  maximum for clipping

*/

void fastInverseDCT2_B32(const TCoeff *src, TCoeff *dst, int shift, int line, int iSkipLine, int iSkipLine2, bool clip, const TCoeff outputMinimum, const TCoeff outputMaximum)

{

  _fastInverseMM<32>( src, dst, shift, line, iSkipLine, iSkipLine2, clip, outputMinimum, outputMaximum, g_trCoreDCT2P32[0] );

}

void fastInverseDCT2_B64(const TCoeff *src, TCoeff *dst, int shift, int line, int iSkipLine, int iSkipLine2, bool clip, const TCoeff outputMinimum, const TCoeff outputMaximum)

{

  _fastInverseMM<64>( src, dst, shift, line, iSkipLine, iSkipLine2, clip, outputMinimum, outputMaximum, g_trCoreDCT2P64[0] );

}

void fastInverseDST7_B4(const TCoeff *src, TCoeff *dst, int shift, int line, int iSkipLine, int iSkipLine2, bool clip, const TCoeff outputMinimum, const TCoeff outputMaximum)

{

  _fastInverseMM<4>( src, dst, shift, line, iSkipLine, iSkipLine2, clip, outputMinimum, outputMaximum, g_trCoreDST7P4[0] );

}

void fastInverseDST7_B8(const TCoeff *src, TCoeff *dst, int shift, int line, int iSkipLine, int iSkipLine2, bool clip, const TCoeff outputMinimum, const TCoeff outputMaximum)

{

  _fastInverseMM< 8 >( src, dst, shift, line, iSkipLine, iSkipLine2, clip, outputMinimum, outputMaximum, g_trCoreDST7P8[0]);

}

void fastInverseDST7_B16(const TCoeff *src, TCoeff *dst, int shift, int line, int iSkipLine, int iSkipLine2, bool clip, const TCoeff outputMinimum, const TCoeff outputMaximum)

{

  _fastInverseMM< 16 >( src, dst, shift, line, iSkipLine, iSkipLine2, clip, outputMinimum, outputMaximum, g_trCoreDST7P16[0] );

}

void fastInverseDST7_B32(const TCoeff *src, TCoeff *dst, int shift, int line, int iSkipLine, int iSkipLine2, bool clip, const TCoeff outputMinimum, const TCoeff outputMaximum)

{

  _fastInverseMM< 32 >( src, dst, shift, line, iSkipLine, iSkipLine2, clip, outputMinimum, outputMaximum, g_trCoreDST7P32[0] );

}

// ********************************** DCT-VIII **********************************

void fastInverseDCT8_B4(const TCoeff *src, TCoeff *dst, int shift, int line, int iSkipLine, int iSkipLine2, bool clip, const TCoeff outputMinimum, const TCoeff outputMaximum)

{

  _fastInverseMM<4>( src, dst, shift, line, iSkipLine, iSkipLine2, clip, outputMinimum, outputMaximum, g_trCoreDCT8P4[0] );

}

void fastInverseDCT8_B8(const TCoeff *src, TCoeff *dst, int shift, int line, int iSkipLine, int iSkipLine2, bool clip, const TCoeff outputMinimum, const TCoeff outputMaximum)

{

  _fastInverseMM< 8 >( src, dst, shift, line, iSkipLine, iSkipLine2, clip, outputMinimum, outputMaximum, g_trCoreDCT8P8[0] );

}

void fastInverseDCT8_B16(const TCoeff *src, TCoeff *dst, int shift, int line, int iSkipLine, int iSkipLine2, bool clip, const TCoeff outputMinimum, const TCoeff outputMaximum)

{

  _fastInverseMM< 16 >( src, dst, shift, line, iSkipLine, iSkipLine2, clip, outputMinimum, outputMaximum, g_trCoreDCT8P16[0] );

}

void fastInverseDCT8_B32(const TCoeff *src, TCoeff *dst, int shift, int line, int iSkipLine, int iSkipLine2, bool clip, const TCoeff outputMinimum, const TCoeff outputMaximum)

{

  _fastInverseMM< 32 >( src, dst, shift, line, iSkipLine, iSkipLine2, clip, outputMinimum, outputMaximum, g_trCoreDCT8P32[0] );

}

}

#define DONT_UNDEF_SIZE_AWARE_PER_EL_OP 1

#include "Unit.h"

#include "Buffer.h"

namespace vvdec

{

void cpyResiClipCore( const TCoeff* src, Pel* dst, ptrdiff_t stride, unsigned width, unsigned height, const TCoeff outputMin, const TCoeff outputMax, const TCoeff round, const TCoeff shift )

{

#define CPYRESI_OP( ADDR ) dst[ADDR] = Clip3( outputMin, outputMax, ( src[ADDR] + round ) >> shift )

#define CPYRESI_INC dst += stride; src += width;

  SIZE_AWARE_PER_EL_OP( CPYRESI_OP, CPYRESI_INC );

#undef CPYRESI_INC

#undef CPYRESI_OP

}

void clipCore( TCoeff *dst, unsigned width, unsigned height, unsigned stride, const TCoeff outputMin, const TCoeff outputMax, const TCoeff round, const TCoeff shift )

{

#define CLIP_OP( ADDR ) dst[ADDR] = Clip3( outputMin, outputMax, ( dst[ADDR] + round ) >> shift )

#define CLIP_INC        dst      += stride

  SIZE_AWARE_PER_EL_OP( CLIP_OP, CLIP_INC );

#undef CLIP_INC

#undef CLIP_OP

}

template<int trSize>

void fastInvCore_( const TMatrixCoeff* it, const TCoeff* src, TCoeff* dst, unsigned lines, unsigned reducedLines, unsigned rows )

{

  for( int k = 0; k < rows; k++ )

  {

    const TCoeff* srcPtr = &src[k * lines];

    for( int i = 0; i < reducedLines; i++ )

    {

            TCoeff*       dstPtr = &dst[i * trSize];

      const TMatrixCoeff*  itPtr =  &it[k * trSize];

      for( int j = 0; j < trSize; j++ )

      {

        *dstPtr++ += *srcPtr * *itPtr++;

      }

      srcPtr++;

    }

  }

}

Unexecuted instantiation: void vvdec::fastInvCore_<4>(short const*, int const*, int*, unsigned int, unsigned int, unsigned int)

Unexecuted instantiation: void vvdec::fastInvCore_<8>(short const*, int const*, int*, unsigned int, unsigned int, unsigned int)

Unexecuted instantiation: void vvdec::fastInvCore_<16>(short const*, int const*, int*, unsigned int, unsigned int, unsigned int)

Unexecuted instantiation: void vvdec::fastInvCore_<32>(short const*, int const*, int*, unsigned int, unsigned int, unsigned int)

Unexecuted instantiation: void vvdec::fastInvCore_<64>(short const*, int const*, int*, unsigned int, unsigned int, unsigned int)

TCoeffOps::TCoeffOps()

{

  cpyResiClip[0] = cpyResiClipCore; //  1

  cpyResiClip[1] = cpyResiClipCore; //  2

  cpyResiClip[2] = cpyResiClipCore; //  4

  cpyResiClip[3] = cpyResiClipCore; //  8

  cpyResiClip[4] = cpyResiClipCore; // 16

  cpyResiClip[5] = cpyResiClipCore; // 32

  cpyResiClip[6] = cpyResiClipCore; // 64

  roundClip4     = clipCore;

  roundClip8     = clipCore;

  fastInvCore[0] = fastInvCore_< 4>;

  fastInvCore[1] = fastInvCore_< 8>;

  fastInvCore[2] = fastInvCore_<16>;

  fastInvCore[3] = fastInvCore_<32>;

  fastInvCore[4] = fastInvCore_<64>;

}

TCoeffOps g_tCoeffOps;

}