1 | /* The copyright in this software is being made available under the BSD |
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2 | * License, included below. This software may be subject to other third party |
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3 | * and contributor rights, including patent rights, and no such rights are |
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4 | * granted under this license. |
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5 | * |
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6 | * Copyright (c) 2010-2015, ITU/ISO/IEC |
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7 | * All rights reserved. |
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8 | * |
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9 | * Redistribution and use in source and binary forms, with or without |
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10 | * modification, are permitted provided that the following conditions are met: |
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11 | * |
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12 | * * Redistributions of source code must retain the above copyright notice, |
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13 | * this list of conditions and the following disclaimer. |
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14 | * * Redistributions in binary form must reproduce the above copyright notice, |
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15 | * this list of conditions and the following disclaimer in the documentation |
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16 | * and/or other materials provided with the distribution. |
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17 | * * Neither the name of the ITU/ISO/IEC nor the names of its contributors may |
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18 | * be used to endorse or promote products derived from this software without |
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19 | * specific prior written permission. |
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20 | * |
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21 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
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22 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS |
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25 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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26 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
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27 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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28 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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29 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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30 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF |
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31 | * THE POSSIBILITY OF SUCH DAMAGE. |
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32 | */ |
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33 | |
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34 | /** \file TComMv.h |
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35 | \brief motion vector class (header) |
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36 | */ |
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37 | |
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38 | #ifndef __TCOMMV__ |
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39 | #define __TCOMMV__ |
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40 | |
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41 | #include "CommonDef.h" |
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42 | |
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43 | //! \ingroup TLibCommon |
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44 | //! \{ |
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45 | |
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46 | // ==================================================================================================================== |
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47 | // Class definition |
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48 | // ==================================================================================================================== |
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49 | |
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50 | /// basic motion vector class |
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51 | class TComMv |
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52 | { |
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53 | private: |
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54 | Short m_iHor; ///< horizontal component of motion vector |
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55 | Short m_iVer; ///< vertical component of motion vector |
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56 | |
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57 | public: |
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58 | |
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59 | // ------------------------------------------------------------------------------------------------------------------ |
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60 | // constructors |
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61 | // ------------------------------------------------------------------------------------------------------------------ |
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62 | |
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63 | TComMv() : |
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64 | m_iHor(0), |
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65 | m_iVer(0) |
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66 | { |
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67 | } |
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68 | |
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69 | TComMv( Short iHor, Short iVer ) : |
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70 | m_iHor(iHor), |
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71 | m_iVer(iVer) |
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72 | { |
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73 | } |
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74 | |
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75 | // ------------------------------------------------------------------------------------------------------------------ |
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76 | // set |
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77 | // ------------------------------------------------------------------------------------------------------------------ |
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78 | |
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79 | Void set ( Short iHor, Short iVer) { m_iHor = iHor; m_iVer = iVer; } |
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80 | Void setHor ( Short i ) { m_iHor = i; } |
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81 | Void setVer ( Short i ) { m_iVer = i; } |
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82 | Void setZero () { m_iHor = m_iVer = 0; } |
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83 | |
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84 | // ------------------------------------------------------------------------------------------------------------------ |
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85 | // get |
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86 | // ------------------------------------------------------------------------------------------------------------------ |
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87 | |
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88 | Int getHor () const { return m_iHor; } |
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89 | Int getVer () const { return m_iVer; } |
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90 | Int getAbsHor () const { return abs( m_iHor ); } |
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91 | Int getAbsVer () const { return abs( m_iVer ); } |
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92 | |
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93 | // ------------------------------------------------------------------------------------------------------------------ |
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94 | // operations |
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95 | // ------------------------------------------------------------------------------------------------------------------ |
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96 | |
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97 | const TComMv& operator += (const TComMv& rcMv) |
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98 | { |
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99 | m_iHor += rcMv.m_iHor; |
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100 | m_iVer += rcMv.m_iVer; |
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101 | return *this; |
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102 | } |
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103 | |
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104 | const TComMv& operator-= (const TComMv& rcMv) |
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105 | { |
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106 | m_iHor -= rcMv.m_iHor; |
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107 | m_iVer -= rcMv.m_iVer; |
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108 | return *this; |
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109 | } |
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110 | |
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111 | #if !ME_ENABLE_ROUNDING_OF_MVS |
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112 | const TComMv& operator>>= (const Int i) |
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113 | { |
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114 | m_iHor >>= i; |
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115 | m_iVer >>= i; |
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116 | return *this; |
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117 | } |
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118 | #endif |
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119 | |
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120 | #if ME_ENABLE_ROUNDING_OF_MVS |
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121 | //! shift right with rounding |
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122 | Void divideByPowerOf2 (const Int i) |
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123 | { |
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124 | Int offset = (i == 0) ? 0 : 1 << (i - 1); |
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125 | m_iHor += offset; |
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126 | m_iVer += offset; |
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127 | |
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128 | m_iHor >>= i; |
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129 | m_iVer >>= i; |
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130 | } |
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131 | #endif |
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132 | |
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133 | const TComMv& operator<<= (const Int i) |
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134 | { |
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135 | m_iHor <<= i; |
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136 | m_iVer <<= i; |
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137 | return *this; |
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138 | } |
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139 | |
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140 | const TComMv operator - ( const TComMv& rcMv ) const |
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141 | { |
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142 | return TComMv( m_iHor - rcMv.m_iHor, m_iVer - rcMv.m_iVer ); |
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143 | } |
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144 | |
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145 | const TComMv operator + ( const TComMv& rcMv ) const |
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146 | { |
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147 | return TComMv( m_iHor + rcMv.m_iHor, m_iVer + rcMv.m_iVer ); |
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148 | } |
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149 | |
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150 | Bool operator== ( const TComMv& rcMv ) const |
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151 | { |
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152 | return (m_iHor==rcMv.m_iHor && m_iVer==rcMv.m_iVer); |
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153 | } |
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154 | |
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155 | Bool operator!= ( const TComMv& rcMv ) const |
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156 | { |
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157 | return (m_iHor!=rcMv.m_iHor || m_iVer!=rcMv.m_iVer); |
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158 | } |
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159 | |
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160 | const TComMv scaleMv( Int iScale ) const |
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161 | { |
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162 | Int mvx = Clip3( -32768, 32767, (iScale * getHor() + 127 + (iScale * getHor() < 0)) >> 8 ); |
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163 | Int mvy = Clip3( -32768, 32767, (iScale * getVer() + 127 + (iScale * getVer() < 0)) >> 8 ); |
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164 | return TComMv( mvx, mvy ); |
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165 | } |
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166 | #if SVC_EXTENSION |
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167 | const TComMv scaleMv( Int iScaleX, Int iScaleY ) const |
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168 | { |
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169 | Int mvx = iScaleX == MV_SCALING_FACTOR_1X ? getHor() : Clip3( -32768, 32767, (iScaleX * getHor() + 127 + (iScaleX * getHor() < 0)) >> 8 ); |
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170 | Int mvy = iScaleY == MV_SCALING_FACTOR_1X ? getVer() : Clip3( -32768, 32767, (iScaleY * getVer() + 127 + (iScaleY * getVer() < 0)) >> 8 ); |
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171 | return TComMv( mvx, mvy ); |
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172 | } |
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173 | #endif |
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174 | };// END CLASS DEFINITION TComMV |
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175 | |
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176 | //! \} |
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177 | |
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178 | #endif // __TCOMMV__ |
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