/* The copyright in this software is being made available under the BSD
 * License, included below. This software may be subject to other third party
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 * granted under this license.
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 * Copyright (c) 2010-2015, ITU/ISO/IEC
 * All rights reserved.
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 *    this list of conditions and the following disclaimer.
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/**
 * \file
 * \brief Declaration of TComInterpolationFilter class
 */

#ifndef __TCOMINTERPOLATIONFILTER__
#define __TCOMINTERPOLATIONFILTER__

#include "CommonDef.h"

//! \ingroup TLibCommon
//! \{

#if H_3D_ARP
#define NTAPS_LUMA_ARP    2 ///< Number of taps for luma
#define NTAPS_CHROMA_ARP  2 ///< Number of taps for chroma
#endif

#define NTAPS_LUMA        8 ///< Number of taps for luma
#define NTAPS_CHROMA      4 ///< Number of taps for chroma
#define IF_INTERNAL_PREC 14 ///< Number of bits for internal precision
#define IF_FILTER_PREC    6 ///< Log2 of sum of filter taps
#define IF_INTERNAL_OFFS (1<<(IF_INTERNAL_PREC-1)) ///< Offset used internally

/**
 * \brief Interpolation filter class
 */
class TComInterpolationFilter
{
  static const TFilterCoeff m_lumaFilter[LUMA_INTERPOLATION_FILTER_SUB_SAMPLE_POSITIONS][NTAPS_LUMA];     ///< Luma filter taps
  static const TFilterCoeff m_chromaFilter[CHROMA_INTERPOLATION_FILTER_SUB_SAMPLE_POSITIONS][NTAPS_CHROMA]; ///< Chroma filter taps
#if H_3D_ARP
  static const Short m_lumaFilterARP  [4][NTAPS_LUMA_ARP];     ///< Luma filter taps for ARP
  static const Short m_chromaFilterARP[8][NTAPS_CHROMA_ARP];   ///< Chroma filter taps for ARP
#endif

  static Void filterCopy(Int bitDepth, const Pel *src, Int srcStride, Pel *dst, Int dstStride, Int width, Int height, Bool isFirst, Bool isLast);

  template<Int N, Bool isVertical, Bool isFirst, Bool isLast>
  static Void filter(Int bitDepth, Pel const *src, Int srcStride, Pel *dst, Int dstStride, Int width, Int height, TFilterCoeff const *coeff);

  template<Int N>
  static Void filterHor(Int bitDepth, Pel *src, Int srcStride, Pel *dst, Int dstStride, Int width, Int height,               Bool isLast, TFilterCoeff const *coeff);
  template<Int N>
  static Void filterVer(Int bitDepth, Pel *src, Int srcStride, Pel *dst, Int dstStride, Int width, Int height, Bool isFirst, Bool isLast, TFilterCoeff const *coeff);

public:
  TComInterpolationFilter() {}
  ~TComInterpolationFilter() {}

  Void filterHor(const ComponentID compID, Pel *src, Int srcStride, Pel *dst, Int dstStride, Int width, Int height, Int frac,               Bool isLast, const ChromaFormat fmt, const Int bitDepth 
#if H_3D_ARP
    , Bool filterType = false
#endif
);
  Void filterVer(const ComponentID compID, Pel *src, Int srcStride, Pel *dst, Int dstStride, Int width, Int height, Int frac, Bool isFirst, Bool isLast, const ChromaFormat fmt, const Int bitDepth 
#if H_3D_ARP
    , Bool filterType = false
#endif
);
};

#if H_3D_ARP
    , Bool filterType = false
#endif
#if H_3D_ARP
    , Bool filterType = false
#endif

//! \}

#endif
