/* The copyright in this software is being made available under the BSD
 * License, included below. This software may be subject to other third party
 * and contributor rights, including patent rights, and no such rights are
 * granted under this license.
 *
 * Copyright (c) 2010-2011, ISO/IEC
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *  * Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 *  * Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 *  * Neither the name of the ISO/IEC nor the names of its contributors may
 *    be used to endorse or promote products derived from this software without
 *    specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
 * THE POSSIBILITY OF SUCH DAMAGE.
 */



/** \file     ContextModel3DBuffer.cpp
    \brief    context model 3D buffer class
*/

#include "ContextModel3DBuffer.h"

// ====================================================================================================================
// Constructor / destructor / initialization / destroy
// ====================================================================================================================

ContextModel3DBuffer::ContextModel3DBuffer( UInt uiSizeZ, UInt uiSizeY, UInt uiSizeX ) :
m_pcContextModel( NULL ),
m_uiSizeX( uiSizeX ),
m_uiSizeY( uiSizeY ),
m_uiSizeZ( uiSizeZ )

{
  // allocate 3D buffer
  m_pcContextModel = new ContextModel[ uiSizeZ * m_uiSizeY * m_uiSizeX ];
}

ContextModel3DBuffer::~ContextModel3DBuffer()
{
  // delete 3D buffer
  delete [] m_pcContextModel;
  m_pcContextModel = NULL;
}

// ====================================================================================================================
// Public member functions
// ====================================================================================================================

/**
 - initialize 3D buffer with respect to slicetype, QP and given initial probability table
 .
 \param  eSliceType      slice type
 \param  iQP             input QP value
 \param  psCtxModel      given probability table
 */
Void ContextModel3DBuffer::initBuffer( SliceType eSliceType, Int iQp, Short* psCtxModel )
{
  UInt n, z, offset = 0;
  
  for ( z = 0; z < m_uiSizeZ; z++ )
  {
    for ( n = 0; n < m_uiSizeY * m_uiSizeX; n++ )
    {
      m_pcContextModel[ offset + n ].init( iQp, psCtxModel + eSliceType * 2 * ( m_uiSizeZ * m_uiSizeY * m_uiSizeX ) + 2 * (n + offset) );
    }
    offset += n;
  }
  return;
}

/**
 - copy from given 3D buffer
 .
 \param  pSrc          given 3D buffer
 */
Void ContextModel3DBuffer::copyFrom( ContextModel3DBuffer* pSrc )
{
  ::memcpy( this->m_pcContextModel, pSrc->m_pcContextModel, sizeof(ContextModel) * m_uiSizeZ * m_uiSizeY * m_uiSizeX );
}