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/** \file     TComPattern.h
    \brief    neighbouring pixel access classes (header)
*/

#ifndef __TCOMPATTERN__
#define __TCOMPATTERN__

// Include files
#include "CommonDef.h"

//! \ingroup TLibCommon
//! \{

// ====================================================================================================================
// Class definition
// ====================================================================================================================

class TComDataCU;
class TComTU;

/// neighbouring pixel access class for one component
class TComPatternParam
{
private:
  Pel*  m_piROIOrigin;

public:
  Int   m_iROIWidth;
  Int   m_iROIHeight;
  Int   m_iPatternStride;
  Int   m_bitDepth;

  /// return starting position of ROI (ROI = &pattern[AboveOffset][LeftOffset])
  __inline Pel*  getROIOrigin()
  {
    return  m_piROIOrigin;
  }
  __inline const Pel*  getROIOrigin() const
  {
    return  m_piROIOrigin;
  }

  /// set parameters from Pel buffer for accessing neighbouring pixels
  Void setPatternParamPel( Pel* piTexture, Int iRoiWidth, Int iRoiHeight, Int iStride, Int bitDepth );
};

/// neighbouring pixel access class for all components
class TComPattern
{
private:
  TComPatternParam  m_cPatternY;
//  TComPatternParam  m_cPatternCb;
  //TComPatternParam  m_cPatternCr;

public:

  // ROI & pattern information, (ROI = &pattern[AboveOffset][LeftOffset])
  Pel*  getROIY()                 { return m_cPatternY.getROIOrigin();    }
  const Pel*  getROIY() const     { return m_cPatternY.getROIOrigin();    }
  Int   getROIYWidth() const      { return m_cPatternY.m_iROIWidth;       }
  Int   getROIYHeight() const     { return m_cPatternY.m_iROIHeight;      }
  Int   getPatternLStride() const { return m_cPatternY.m_iPatternStride;  }
  Int   getBitDepthY() const      { return m_cPatternY.m_bitDepth;        }

  // -------------------------------------------------------------------------------------------------------------------
  // initialization functions
  // -------------------------------------------------------------------------------------------------------------------

  /// set parameters from Pel buffers for accessing neighbouring pixels
  Void initPattern( Pel* piY, Int iRoiWidth, Int iRoiHeight, Int iStride, Int bitDepthLuma );
};

//! \}

#endif // __TCOMPATTERN__