source: 3DVCSoftware/trunk/source/Lib/TLibCommon/ContextModel3DBuffer.h

Last change on this file was 1413, checked in by tech, 6 years ago

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1/* The copyright in this software is being made available under the BSD
2 * License, included below. This software may be subject to other third party
3 * and contributor rights, including patent rights, and no such rights are
4 * granted under this license.
5 *
6 * Copyright (c) 2010-2017, ITU/ISO/IEC
7 * All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions are met:
11 *
12 *  * Redistributions of source code must retain the above copyright notice,
13 *    this list of conditions and the following disclaimer.
14 *  * Redistributions in binary form must reproduce the above copyright notice,
15 *    this list of conditions and the following disclaimer in the documentation
16 *    and/or other materials provided with the distribution.
17 *  * Neither the name of the ITU/ISO/IEC nor the names of its contributors may
18 *    be used to endorse or promote products derived from this software without
19 *    specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
22 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS
25 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
31 * THE POSSIBILITY OF SUCH DAMAGE.
32 */
33
34/** \file     ContextModel3DBuffer.h
35    \brief    context model 3D buffer class (header)
36*/
37
38#ifndef __CONTEXTMODEL3DBUFFER__
39#define __CONTEXTMODEL3DBUFFER__
40
41#include <stdio.h>
42#include <memory.h>
43
44#include "CommonDef.h"
45#include "ContextModel.h"
46
47//! \ingroup TLibCommon
48//! \{
49
50// ====================================================================================================================
51// Class definition
52// ====================================================================================================================
53
54/// context model 3D buffer class
55class ContextModel3DBuffer
56{
57protected:
58  ContextModel* m_contextModel; ///< array of context models
59  const UInt    m_sizeX;        ///< X size of 3D buffer
60  const UInt    m_sizeXY;       ///< X times Y size of 3D buffer
61  const UInt    m_sizeXYZ;      ///< total size of 3D buffer
62
63public:
64  ContextModel3DBuffer  ( UInt uiSizeZ, UInt uiSizeY, UInt uiSizeX, ContextModel *basePtr, Int &count );
65  ~ContextModel3DBuffer () {}
66
67  // access functions
68  ContextModel& get( UInt uiZ, UInt uiY, UInt uiX )
69  {
70    return  m_contextModel[ uiZ * m_sizeXY + uiY * m_sizeX + uiX ];
71  }
72  ContextModel* get( UInt uiZ, UInt uiY )
73  {
74    return &m_contextModel[ uiZ * m_sizeXY + uiY * m_sizeX ];
75  }
76  ContextModel* get( UInt uiZ )
77  {
78    return &m_contextModel[ uiZ * m_sizeXY ];
79  }
80
81  // initialization & copy functions
82  Void initBuffer( SliceType eSliceType, Int iQp, UChar* ctxModel );          ///< initialize 3D buffer by slice type & QP
83
84  UInt calcCost( SliceType sliceType, Int qp, UChar* ctxModel );      ///< determine cost of choosing a probability table based on current probabilities
85  /** copy from another buffer
86   * \param src buffer to copy from
87   */
88  Void copyFrom( const ContextModel3DBuffer* src )
89  {
90    assert( m_sizeXYZ == src->m_sizeXYZ );
91    ::memcpy( m_contextModel, src->m_contextModel, sizeof(ContextModel) * m_sizeXYZ );
92  }
93};
94
95//! \}
96
97#endif // _HM_CONTEXT_MODEL_3DBUFFER_H_
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