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1 /* |
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2 * Copyright (c) 2010 Ixonos Plc. |
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3 * All rights reserved. |
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4 * This component and the accompanying materials are made available |
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5 * under the terms of the "Eclipse Public License v1.0" |
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6 * which accompanies this distribution, and is available |
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7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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8 * |
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9 * Initial Contributors: |
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10 * Nokia Corporation - Initial contribution |
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11 * |
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12 * Contributors: |
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13 * Ixonos Plc |
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14 * |
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15 * Description: |
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16 * Motion vector calculations and storage. |
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17 * |
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18 */ |
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19 |
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20 |
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21 |
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22 |
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23 #include "h263dConfig.h" |
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24 |
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25 #include "vdcmvc.h" |
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26 |
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27 #include "core.h" |
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28 #include "errcodes.h" |
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29 #include "debug.h" |
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30 |
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31 |
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32 /* |
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33 * Defines |
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34 */ |
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35 |
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36 #define NEIGHBOUR_SIZE 2 /* The size for neighbour array */ |
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37 #define MVD_NOT_CODED -32767 /* Macroblock is not coded in mvcTable_t */ |
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38 #define MVD_INTRA -32765 /* Marks intra macroblock in mvcTable_t */ |
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39 |
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40 #define MVD_UMIN_MPEG4 -10240 |
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41 |
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42 #define MVD_MIN -160 /* The minimum for mvd. */ |
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43 #define MVD_MAX 155 /* The maximum for mvd. */ |
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44 #define MVD_UMIN_V1 -315 /* The minimum for MV in unrestricted mode (v1) */ |
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45 #define MVD_UMAX_V1 315 /* The maximum for MV in unrestricted mode (v1) */ |
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46 #define MVD_UMIN_V2 -32000 /* The minimum for MV in unrestricted mode (v2) |
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47 Note: this value is used to check the validity |
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48 of MVs. If there is no MV for a MB |
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49 MVD_NOT_CODED or MVD_INTRA are used, and |
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50 therefore any value bigger than those |
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51 suits for this definition. In H.263 v2 |
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52 unlimited submode, MVs can have any length |
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53 within a picture (plus 15-pixel border), |
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54 and therefore this definition is set to small |
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55 enough value. */ |
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56 #define MVD_155 155 /* MV for 15.5 */ |
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57 #define MVD_160 160 /* MV for 16 */ |
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58 #define MVD_320 320 /* MV for 32 */ |
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59 /* It is assumed that motion vector values are signed and in order |
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60 (for example MV for 15.5 < MV for 16). |
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61 No other assumptions are made. */ |
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62 |
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63 |
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64 /* |
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65 * Macros |
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66 */ |
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67 |
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68 /* mvValid checks if the specified item is a valid motion vector */ |
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69 /* Note: MVD_NOT_CODED and MVD_INTRA are very small negative numbers. |
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70 Thus, we can use the minimum MV for H.263 Annex D unlimited |
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71 submode to check the validity of a passed item. Actually, |
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72 we could use any value larger than MVD_NOT_CODED and MVD_INTRA |
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73 and smaller than or equal to the minimum MV. */ |
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74 #define mvValid(d1item, d1y, d1time) \ |
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75 (d1item.mvx >= MVD_UMIN_V2 \ |
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76 && d1item.y == (d1y) && d1item.time == (d1time)) |
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77 |
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78 |
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79 #define mvValidMPEG(d1item, d1y, d1time) \ |
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80 (d1item.mvx >= MVD_UMIN_MPEG4 \ |
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81 && d1item.y == (d1y) && d1item.time == (d1time)) |
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82 |
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83 /* mvLegal cheks if the specified item has been updated to either contain |
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84 a motion vector or not coded / intra information */ |
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85 #define mvLegal(d5item, d5y, d5time) \ |
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86 (d5item.y == (d5y) && d5item.time == (d5time)) |
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87 |
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88 /* mvStore puts given arguments into the motion vector array |
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89 Used from: mvcCalcMV */ |
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90 #define mvStore(d2row, d2x, d2y, d2mvx, d2mvy, d2time, d2type) \ |
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91 d2row[d2x].mvx = d2mvx; d2row[d2x].mvy = d2mvy; \ |
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92 d2row[d2x].y = d2y; d2row[d2x].time = d2time; d2row[d2x].fourMVs = 1; \ |
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93 d2row[d2x].type = d2type |
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94 |
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95 /* mvStoreMB puts given arguments into the motion vector array for the |
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96 whole macroblock |
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97 Used from: mvcCalcMV, mvcMarkMBIntra, mvcMarkMBNotCoded */ |
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98 #define mvStoreMB(d4row1, d4row2, d4x, d4y, d4mvx, d4mvy, d4time, d4type) \ |
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99 d4row1[d4x].mvx = d4row1[d4x + 1].mvx = \ |
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100 d4row2[d4x].mvx = d4row2[d4x + 1].mvx = d4mvx; \ |
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101 d4row1[d4x].mvy = d4row1[d4x + 1].mvy = \ |
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102 d4row2[d4x].mvy = d4row2[d4x + 1].mvy = d4mvy; \ |
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103 d4row1[d4x].y = d4row1[d4x + 1].y = d4y; \ |
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104 d4row2[d4x].y = d4row2[d4x + 1].y = d4y + 1; \ |
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105 d4row1[d4x].time = d4row1[d4x + 1].time = \ |
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106 d4row2[d4x].time = d4row2[d4x + 1].time = time; \ |
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107 d4row1[d4x].fourMVs = d4row1[d4x + 1].fourMVs = \ |
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108 d4row2[d4x].fourMVs = d4row2[d4x + 1].fourMVs = 0; \ |
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109 d4row1[d4x].type = d4row1[d4x + 1].type = \ |
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110 d4row2[d4x].type = d4row2[d4x + 1].type = (d4type) |
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111 |
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112 /* updateRowPointers checks if currX, currY or currTime have changed |
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113 and updates them. It also updates mvRow0, mvRow1 and mvRow2. |
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114 Used from: mvcCalcMV, mvcMarkMBIntra, mvcMarkMBNotCoded */ |
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115 #define updateRowPointers(d3x, d3y, d3time) \ |
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116 if (d3x != mvcData->currX) \ |
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117 mvcData->currX = d3x; \ |
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118 if (d3y != mvcData->currY) { \ |
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119 int \ |
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120 mvRowIndex, \ |
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121 currMaxX = mvcData->currMaxX; \ |
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122 mvRowItem_t *mvRow = mvcData->mvRow; \ |
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123 mvcData->currY = d3y; \ |
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124 mvcData->mvRowIndex = mvRowIndex = (mvcData->mvRowIndex + 2) % 3; \ |
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125 mvcData->mvRow0 = &mvRow[(currMaxX + 1) * 2 * mvRowIndex]; \ |
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126 mvcData->mvRow1 = &mvRow[(currMaxX + 1) * 2 * ((mvRowIndex + 1) % 3)]; \ |
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127 mvcData->mvRow2 = &mvRow[(currMaxX + 1) * 2 * ((mvRowIndex + 2) % 3)]; \ |
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128 } \ |
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129 if (d3time != mvcData->currTime) \ |
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130 mvcData->currTime = d3time |
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131 |
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132 /* mvcInvMVD takes the other one of the possible MVD values defined in |
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133 H.263 Recommendation */ |
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134 #define mvcInvMVD(invMv) \ |
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135 (invMv < 0) ? \ |
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136 MVD_320 + invMv : \ |
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137 -MVD_320 + invMv |
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138 |
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139 /* sign123(x) returns |
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140 1 if x < 0, |
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141 2 if x > 0, |
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142 3 if x == 0 |
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143 In other words, |
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144 bit 0 = 1 if x <= 0, |
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145 bit 1 = 1 if x >= 0 */ |
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146 #define sign123(x) ((x == 0) ? 3 : (x < 0) ? 1 : 2) |
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147 |
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148 |
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149 /* |
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150 * Local prototypes |
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151 */ |
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152 |
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153 static void mvcGetNeighbourMVs(mvcData_t *mvcData, int x, int y, int time, |
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154 int *nmvx, int *nmvy, int prevFlag, int16 *error); |
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155 |
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156 __inline static void mvcCheckAndSet( |
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157 mvRowItem_t *mvRowPtr, int xind, int yind, int time, int nind, |
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158 int *nmvx, int *nmvy, mvRowItem_t *cmvRowPtr, int cxind, int cyind, |
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159 int16 *error); |
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160 |
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161 __inline static void mvcSetToCurrent( |
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162 mvRowItem_t *mvRowPtr, int xind, int yind, int time, int nind, |
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163 int *nmvx, int *nmvy, int16 *error); |
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164 |
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165 |
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166 /* |
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167 * Global functions |
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168 */ |
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169 |
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170 |
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171 /* {{-output"mvcSetBorders.txt"}} */ |
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172 /* |
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173 * |
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174 * mvcSetBorders |
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175 * |
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176 * Parameters: |
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177 * mvcData mvcData_t structure |
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178 * x the x coordinate of the MB (0 .. maxX) |
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179 * y the y coordinate of the MB |
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180 * (0 .. macroblock rows in frame - 1) |
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181 * mba Macroblock address of starting MB of the slice. This |
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182 * value SHOULD be set to -1 if Annex K is not in use. |
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183 * numMBsInMBLine Number of MBs in MB line |
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184 * rightOfBorder There is a border on the left of the current MB |
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185 * downOfBorder There is a border on top of the current MB |
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186 * |
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187 * Function: |
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188 * This function calculates the borders of GOBs and Slices..This function |
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189 * SHOULD be called before mvcCalcMV..... |
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190 * |
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191 * Returns: |
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192 * Nothing |
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193 * |
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194 * Error codes: |
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195 * None |
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196 * |
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197 */ |
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198 |
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199 void mvcSetBorders( |
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200 mvcData_t *mvcData, int x, int y, int mba, int numMBsInMBLine, |
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201 int *rightOfBorder, int *downOfBorder |
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202 ) |
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203 { |
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204 int |
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205 upRightMBIsStart; |
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206 |
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207 if (mvcData) { |
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208 mvcData->rightOfBorderPrev = mvcData->rightOfBorder; |
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209 mvcData->downOfBorderPrev = mvcData->downOfBorder; |
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210 } |
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211 |
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212 if (mba == -1) { |
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213 if (x == 0) { |
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214 *rightOfBorder = 1; |
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215 } |
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216 else { |
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217 *rightOfBorder = 0; |
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218 } |
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219 |
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220 /* Always downOfBorder is set to 1, since in QCIF and CIF every GOB |
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221 has only 1 MB line. If larger images are supported, numMBLinesInGOB |
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222 should be passed here. Also number of starting MB of the GOB may be |
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223 needed...*/ |
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224 *downOfBorder = 1; |
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225 upRightMBIsStart = 0; |
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226 } |
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227 else { |
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228 int |
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229 xs, /* x coordinate of start MB */ |
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230 ys; /* y coordinate of start MB */ |
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231 xs = mba % numMBsInMBLine; |
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232 ys = mba / numMBsInMBLine; |
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233 |
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234 /* slice structured mode*/ |
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235 /* Check if there is slice border on top of the current MB: |
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236 For that, check either current MB should be on the same MB line |
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237 with the starting MB of slice or current MB should not be on the |
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238 left of the starting MB if the MB is on the second line of the |
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239 slice. */ |
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240 |
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241 if ((y == ys) || ((x < xs) && (ys+1 == y))) { |
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242 *downOfBorder = 1; |
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243 } |
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244 else { |
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245 *downOfBorder = 0; |
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246 } |
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247 /* Check if there is a slice border on the left of the current MB.*/ |
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248 if (((x == xs) && (y == ys)) || (x == 0)) { |
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249 *rightOfBorder = 1; |
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250 } |
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251 else { |
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252 *rightOfBorder = 0; |
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253 } |
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254 |
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255 /* Test the situation of MV2 is in another slice but MV3 in in the |
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256 same slice... i.e: |
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257 MB1 MB1 MB1 MB2 MB2 .........MB2 |
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258 MB2 MB2 MB2 MB2 MB2..........MB2 |
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259 * |
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260 The MB marked with * is an exmaple. MB on top of it is in another slice |
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261 but the MB which MV3 will come from is in the same slice...*/ |
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262 if ((x+1 == xs) && (y-1 == ys)) |
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263 upRightMBIsStart = 1; |
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264 else |
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265 upRightMBIsStart = 0; |
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266 } |
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267 |
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268 if (mvcData) { |
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269 mvcData->upRightMBIsStart = upRightMBIsStart; |
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270 mvcData->downOfBorder = *downOfBorder; |
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271 mvcData->rightOfBorder = *rightOfBorder; |
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272 mvcData->leftOfBorder = 0; |
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273 } |
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274 } |
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275 |
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276 /* {{-output"mvcCalcMV.txt"}} */ |
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277 /* |
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278 * |
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279 * mvcCalcMV |
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280 * |
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281 * Parameters: |
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282 * mvcData mvcData_t structure |
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283 * |
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284 * mvdx motion vector data returned by vlcGetMVD |
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285 * mvdy |
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286 * |
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287 * *mvx the resulting motion vector is placed to *mvx and *mvy |
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288 * *mvy |
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289 * |
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290 * predictorMode 0, 1, 2 or 3. See H.263 recommendation, Annex F, Figure |
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291 * 15, where modes are in the following order: |
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292 * 0 1 |
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293 * 2 3 |
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294 * |
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295 * Advanced Prediction mode: It is assumed that this |
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296 * function is called by setting predictorMode 0, 1, 2 |
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297 * and 3 in this order for a particular macroblock. |
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298 * |
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299 * Normal: This function should be called by setting |
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300 * predictorMode to 0. |
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301 * |
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302 * fourMVs if != 0, four motion vectors for current macroblock |
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303 * is assumed |
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304 * |
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305 * unrestrictedMV if != 0, unrestricted motion vector mode is used |
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306 * |
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307 * topOfGOB if != 0, the current MB is assumed to be in the |
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308 * first line of the current GOB |
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309 * |
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310 * nonEmptyGOBHeader if != 0, the GOB header of the current GOB is |
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311 * is assumed to be non-empty, and MV2 and MV3 are |
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312 * set to MV1 if they are outside the GOB. If Annex K |
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313 * is in use set this value to 1...... |
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314 * |
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315 * x the x coordinate of the MB (0 .. maxX) |
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316 * y the y coordinate of the MB |
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317 * (0 .. macroblock rows in frame - 1) |
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318 * |
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319 * time a value which is related to the time when the current |
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320 * frame must be shown. This value should be unique |
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321 * among a relatively small group of consecutive frames. |
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322 * |
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323 * mbType must be MVC_MB_INTER or MVC_MB_INTRA. MVC_MB_INTRA |
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324 * should be used only in PB frames mode. |
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325 * |
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326 * error error code |
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327 * |
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328 * fPLUSPTYPE PLUSTYPE flag |
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329 * |
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330 * fUMVLimited Annex D v2 flag |
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331 * 1 => Limited MVs (UUI = 1) |
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332 * 0 => Unlimited MVs (UUI = 01) |
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333 * |
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334 * Function: |
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335 * This function counts the motion vector value for given macroblock. |
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336 * See H.263 Recommendation 6.1.1 Differential Motion Vectors and |
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337 * Annex F. Advanced Prediction Mode. |
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338 * |
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339 * Returns: |
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340 * Changes *mvx, *mvy and possibly *error. |
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341 * |
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342 * Error codes: |
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343 * ERR_MVC_MVDX_ILLEGAL mvdx illegal |
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344 * ERR_MVC_MVDY_ILLEGAL mvdy illegal |
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345 * ERR_MVC_MVX_ILLEGAL mvx is NULL |
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346 * ERR_MVC_MVY_ILLEGAL mvy is NULL |
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347 * ERR_MVC_MODE_ILLEGAL predictorMode illegal |
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348 * ERR_MVC_X_ILLEGAL x < 0 or x > maxX |
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349 * ERR_MVC_Y_ILLEGAL y < 0 |
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350 * ERR_MVC_TIME_ILLEGAL time < 0 |
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351 * ERR_MVC_MVPTR result is not legal |
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352 * |
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353 */ |
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354 |
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355 void mvcCalcMV(mvcData_t *mvcData, int mvdx, int mvdy, |
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356 int *mvx, int *mvy, u_char predictorMode, u_char fourMVs, |
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357 u_char unrestrictedMV, u_char nonEmptyGOBHeader, int x, |
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358 int y, int time, int mbType, int16 *error, int fPLUSPTYPE, |
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359 int fUMVLimited) |
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360 /* {{-output"mvcCalcMV.txt"}} */ |
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361 { |
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362 |
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363 int |
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364 i, j, /* loop variables */ |
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365 mvcx[3], /* Candidates: mv[0] = MV1, mv[1] = MV2, mv[2] = MV3 */ |
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366 mvcy[3], |
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367 *mv, /* mvcx or mvcy */ |
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368 *mvptr, /* == mvx or mvy */ |
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369 mvd, /* mvdx or mvdy */ |
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370 xx2, /* x * 2 */ |
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371 yx2, /* y * 2 */ |
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372 xmv1, /* index for MV1 */ |
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373 xmv2, /* index for MV2 */ |
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374 xmv3, /* index for MV3 */ |
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375 ymv1, |
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376 ymv2, |
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377 ymv3, |
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378 mvRangeLow, /* Lower boundary for MV Range |
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379 Look H.263+ Rec. Table D.1, D.2 */ |
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380 mvRangeHigh, /* Higher boundary for MV Range |
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381 Look H.263+ Rec. Table D.1, D.2 */ |
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382 picDim, /* Temporary variable for luminance width or height */ |
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383 mbCorner, /* Temporary variable for MB's topleft corner's |
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384 coordinate (x or y)*/ |
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385 mvRes; /* MB's rightmost or bottommost pixel plus MV |
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386 for checking restriction D.1.1 */ |
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387 mvRowItem_t |
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388 *currMvRow, |
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389 *prevMvRow, |
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390 *mvRow0, |
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391 *mvRow1, |
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392 *mvRow2; |
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393 |
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394 /* Check parameters */ |
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395 if ((!fPLUSPTYPE) || (!unrestrictedMV)) |
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396 { |
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397 if (mvdx < MVD_MIN || mvdx > MVD_MAX) { |
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398 *error = ERR_MVC_MVDX_ILLEGAL; |
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399 return; |
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400 } |
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401 |
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402 if (mvdy < MVD_MIN || mvdy > MVD_MAX) { |
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403 *error = ERR_MVC_MVDY_ILLEGAL; |
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404 return; |
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405 } |
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406 } |
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407 |
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408 if (!mvx) { |
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409 *error = ERR_MVC_MVX_ILLEGAL; |
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410 return; |
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411 } |
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412 |
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413 if (!mvy) { |
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414 *error = ERR_MVC_MVY_ILLEGAL; |
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415 return; |
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416 } |
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417 |
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418 if ((fourMVs && predictorMode > 3) || |
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419 (!fourMVs && predictorMode > 0)) { |
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420 *error = ERR_MVC_MODE_ILLEGAL; |
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421 return; |
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422 } |
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423 |
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424 if (x < 0 || x > mvcData->currMaxX) { |
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425 *error = ERR_MVC_X_ILLEGAL; |
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426 return; |
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427 } |
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428 |
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429 if (y < 0) { |
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430 *error = ERR_MVC_Y_ILLEGAL; |
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431 return; |
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432 } |
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433 |
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434 if (time < 0) { |
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435 *error = ERR_MVC_TIME_ILLEGAL; |
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436 return; |
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437 } |
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438 |
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439 updateRowPointers(x, y, time); |
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440 mvRow0 = mvcData->mvRow0; |
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441 mvRow1 = mvcData->mvRow1; |
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442 mvRow2 = mvcData->mvRow2; |
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443 |
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444 /* Seek candidate predictors */ |
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445 |
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446 xx2 = x << 1; /* xx2 = x * 2 */ |
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447 yx2 = y << 1; |
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448 |
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449 xmv1 = xx2 - 1 + (predictorMode & 1); |
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450 xmv2 = xx2 + (predictorMode == 1); |
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451 xmv3 = xx2 + 2 - (predictorMode > 1); |
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452 ymv1 = yx2 + (predictorMode > 1); |
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453 ymv2 = ymv3 = yx2 - 1 + (predictorMode > 1); |
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454 |
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455 if (predictorMode <= 1) { |
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456 currMvRow = mvRow1; |
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457 prevMvRow = mvRow0; |
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458 } |
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459 else { |
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460 currMvRow = mvRow2; |
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461 prevMvRow = mvRow1; |
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462 } |
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463 |
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464 if ( (predictorMode & 1) || /* right column of the MB */ |
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465 ( !mvcData->rightOfBorder && mvValid(currMvRow[xmv1], ymv1, time) ) ) { |
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466 mvcx[0] = currMvRow[xmv1].mvx; |
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467 mvcy[0] = currMvRow[xmv1].mvy; |
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468 } |
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469 else |
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470 /* if (x == 0 || motion vector for previous MB does not exist || |
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471 the previous MB belongs to a different slice) */ |
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472 mvcx[0] = mvcy[0] = 0; |
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473 |
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474 if ((y == 0 || (mvcData->downOfBorder && nonEmptyGOBHeader)) && predictorMode <= 1) { |
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475 /* mv2 and mv3 are outside the picture or GOB |
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476 (if non-empty GOB header) or outside the slice*/ |
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477 mvcx[1] = mvcx[0]; |
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478 mvcy[1] = mvcy[0]; |
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479 /* Check if the MB ont the previous line and on the next column |
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480 in in the same slice (means start MBof the slice).. */ |
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481 if (!mvcData->upRightMBIsStart) { |
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482 mvcx[2] = mvcx[0]; |
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483 mvcy[2] = mvcy[0]; |
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484 } |
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485 if (x == mvcData->currMaxX) |
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486 mvcx[2] = mvcy[2] = 0; |
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487 } |
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488 else { |
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489 if (mvValid(prevMvRow[xmv2], ymv2, time)) { |
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490 mvcx[1] = prevMvRow[xmv2].mvx; |
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491 mvcy[1] = prevMvRow[xmv2].mvy; |
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492 } |
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493 else |
|
494 mvcx[1] = mvcy[1] = 0; |
|
495 |
|
496 if (mvValid(prevMvRow[xmv3], ymv3, time)) { |
|
497 mvcx[2] = prevMvRow[xmv3].mvx; |
|
498 mvcy[2] = prevMvRow[xmv3].mvy; |
|
499 } |
|
500 else |
|
501 mvcx[2] = mvcy[2] = 0; |
|
502 } |
|
503 |
|
504 for (j = 0, mv = mvcx, mvd = mvdx, mvptr = mvx, |
|
505 picDim = mvcData->currLumWidth, mbCorner = x, |
|
506 mvRangeLow = mvcData->mvRangeLowX, |
|
507 mvRangeHigh = mvcData->mvRangeHighX; |
|
508 j < 2; |
|
509 j++, mv = mvcy, mvd = mvdy, mvptr = mvy, |
|
510 picDim = mvcData->currLumHeight, mbCorner = y, |
|
511 mvRangeLow = mvcData->mvRangeLowY, |
|
512 mvRangeHigh = mvcData->mvRangeHighY) { |
|
513 |
|
514 int choice1, min, predictor; |
|
515 |
|
516 /* Find the median of the candidates */ |
|
517 |
|
518 min = mv[0]; |
|
519 predictor = 32767; |
|
520 |
|
521 for (i = 1; i < 3; i++) { |
|
522 if (mv[i] <= min) { |
|
523 predictor = min; |
|
524 min = mv[i]; |
|
525 continue; |
|
526 } |
|
527 if (mv[i] < predictor) |
|
528 predictor = mv[i]; |
|
529 } |
|
530 |
|
531 /* Count the new motion vector value */ |
|
532 |
|
533 if (!unrestrictedMV) { |
|
534 /* Default prediction mode. |
|
535 Count the legal [-16..15.5] motion vector */ |
|
536 |
|
537 choice1 = predictor + mvd; |
|
538 |
|
539 *mvptr = (MVD_MIN <= choice1 && choice1 <= MVD_MAX) ? |
|
540 choice1 : |
|
541 /*(mvd == 0) ? |
|
542 predictor :*/ /* index 32, should never happen?! */ |
|
543 (mvd < 0) ? |
|
544 MVD_320 + choice1 : /* index 0..31: 32 + mvd + predictor */ |
|
545 -MVD_320 + choice1; /* index 33..63: -32 + mvd + predictor */ |
|
546 |
|
547 /* Check that the result is [-16..15.5] */ |
|
548 if (*mvptr < MVD_MIN || *mvptr > MVD_MAX) { |
|
549 *error = ERR_MVC_MVPTR; |
|
550 return; |
|
551 } |
|
552 } |
|
553 |
|
554 else if ((-MVD_155 <= predictor && predictor <= MVD_160) && (!fPLUSPTYPE)) |
|
555 /* Unrestricted motion vector mode && -15.5 <= predictor <= 16. |
|
556 mvd is always valid. */ |
|
557 *mvptr = predictor + mvd; |
|
558 |
|
559 else if (!fPLUSPTYPE) |
|
560 { |
|
561 /* Unrestricted motion vector mode && predictor not in [-15.5, 16] |
|
562 Result in [-31.5, 31.5] and has the same sign as predictor */ |
|
563 choice1 = predictor + mvd; |
|
564 *mvptr = (MVD_UMIN_V1 <= choice1 && choice1 <= MVD_UMAX_V1 && |
|
565 (sign123(choice1) & sign123(predictor))) ? |
|
566 choice1 : |
|
567 /*(mvd == 0) ? |
|
568 predictor :*/ /* index 32, should never happen!? */ |
|
569 (mvd < 0) ? |
|
570 MVD_320 + choice1 : /* index 0..31: 32 + mvd + predictor */ |
|
571 -MVD_320 + choice1; /* index 33..63: -32 + mvd + predictor */ |
|
572 |
|
573 /* Check that the result is in the appropriate range. */ |
|
574 if ((predictor < -MVD_155 && *mvptr > 0) || |
|
575 (predictor > MVD_160 && *mvptr < 0)) { |
|
576 *error = ERR_MVC_MVPTR; |
|
577 return; |
|
578 } |
|
579 |
|
580 } |
|
581 else if (fUMVLimited) |
|
582 /* fPlusType==1 && UUI == 1*/ |
|
583 { |
|
584 *mvptr = predictor + mvd; |
|
585 |
|
586 if ( *mvptr > 0 ) |
|
587 /* mvRes is the leftmost/topmost pixels coordinate of next |
|
588 macroblock plus 2 times MV */ |
|
589 mvRes = (mbCorner+1)*32 + (*mvptr)/5 ; |
|
590 else |
|
591 /* mvRes is the leftmost/topmost pixels coordinate of current |
|
592 macroblock plus 2 times MV, |
|
593 half a pixel corresponds to 1 in integer scale */ |
|
594 mvRes = mbCorner*32 + (*mvptr)/5 ; |
|
595 |
|
596 if ((mvRes < -30) || (mvRes > picDim * 2 + 30)) |
|
597 /* Restriction D.1.1 */ |
|
598 { |
|
599 *error = ERR_MVC_MVPTR; |
|
600 deb("Restriction D.1.1\n"); |
|
601 return; |
|
602 } |
|
603 |
|
604 if ((*mvptr < mvRangeLow) || (*mvptr > mvRangeHigh)) |
|
605 /* Restriction D.2 */ |
|
606 { |
|
607 *error = ERR_MVC_MVPTR; |
|
608 deb("Restriction D.2 \n"); |
|
609 return; |
|
610 } |
|
611 } |
|
612 else /* fPlusType==1 && UUI == 01 */ |
|
613 { |
|
614 *mvptr = predictor + mvd; |
|
615 if ( *mvptr > 0 ) |
|
616 mvRes = (mbCorner+1)*32 + (*mvptr)/5; |
|
617 else |
|
618 mvRes = mbCorner*32 + (*mvptr)/5; |
|
619 if ((mvRes < -30) || (mvRes > picDim * 2 + 30)) |
|
620 /* Restriction D.1.1 */ |
|
621 { |
|
622 *error = ERR_MVC_MVPTR; |
|
623 deb("Restriction D.1.1\n"); |
|
624 return; |
|
625 } |
|
626 } |
|
627 } |
|
628 |
|
629 /* Update motion vector buffer arrays */ |
|
630 switch (predictorMode) { |
|
631 case 0: |
|
632 if (fourMVs) { |
|
633 mvStore(mvRow1, xx2, yx2, *mvx, *mvy, time, mbType); |
|
634 } |
|
635 else { |
|
636 mvStoreMB(mvRow1, mvRow2, xx2, yx2, *mvx, *mvy, time, mbType); |
|
637 } |
|
638 break; |
|
639 case 1: |
|
640 mvStore(mvRow1, xx2 + 1, yx2, *mvx, *mvy, time, mbType); |
|
641 break; |
|
642 case 2: |
|
643 mvStore(mvRow2, xx2, yx2 + 1, *mvx, *mvy, time, mbType); |
|
644 break; |
|
645 case 3: |
|
646 mvStore(mvRow2, xx2 + 1, yx2 + 1, *mvx, *mvy, time, mbType); |
|
647 break; |
|
648 } |
|
649 } |
|
650 |
|
651 |
|
652 /* {{-output"mvcCalcMPEGMV.txt"}} */ |
|
653 /* |
|
654 * |
|
655 * mvcCalcMPEGMV |
|
656 * |
|
657 * Parameters: |
|
658 * mvcData mvcData_t structure |
|
659 * |
|
660 * mvdx motion vector data returned by vlcGetMVD |
|
661 * mvdy |
|
662 * |
|
663 * *mvx the resulting motion vector is placed to *mvx and *mvy |
|
664 * *mvy |
|
665 * |
|
666 * predictorMode 0, 1, 2 or 3. See H.263 recommendation, Annex F, Figure |
|
667 * 15, where modes are in the following order: |
|
668 * 0 1 |
|
669 * 2 3 |
|
670 * |
|
671 * Advanced Prediction mode: It is assumed that this |
|
672 * function is called by setting predictorMode 0, 1, 2 |
|
673 * and 3 in this order for a particular macroblock. |
|
674 * |
|
675 * Normal: This function should be called by setting |
|
676 * predictorMode to 0. |
|
677 * |
|
678 * fourMVs if != 0, four motion vectors for current macroblock |
|
679 * is assumed |
|
680 * |
|
681 * topOfVP if != 0, the current MB is assumed to be in the |
|
682 * first line of the current VideoPacket |
|
683 * |
|
684 * leftOfVP if != 0, the current MB is assumed to be the |
|
685 * first in the VideoPacket |
|
686 * |
|
687 * fmv3_out if != 0, the 3rd MB (top, right) used as MV predictor |
|
688 * is outside of the current VideoPacket |
|
689 * |
|
690 * x the x coordinate of the MB (0 .. maxX) |
|
691 * y the y coordinate of the MB |
|
692 * (0 .. macroblock rows in frame - 1) |
|
693 * |
|
694 * time a value which is related to the time when the current |
|
695 * frame must be shown. This value should be unique |
|
696 * among a relatively small group of consecutive frames. |
|
697 * |
|
698 * mbType must be MVC_MB_INTER or MVC_MB_INTRA. MVC_MB_INTRA |
|
699 * should be used only in PB frames mode. |
|
700 * |
|
701 * error error code |
|
702 * |
|
703 * Function: |
|
704 * This function counts the motion vector value for given macroblock. |
|
705 * See H.263 Recommendation 6.1.1 Differential Motion Vectors and |
|
706 * Annex F. Advanced Prediction Mode. |
|
707 * |
|
708 * Returns: |
|
709 * Changes *mvx, *mvy and possibly *error. |
|
710 * |
|
711 * Error codes: |
|
712 * The following codes are assertion-like checks: |
|
713 * ERR_MVC_MVDX_ILLEGAL mvdx illegal |
|
714 * ERR_MVC_MVDY_ILLEGAL mvdy illegal |
|
715 * ERR_MVC_MVX_ILLEGAL mvx is NULL |
|
716 * ERR_MVC_MVY_ILLEGAL mvy is NULL |
|
717 * ERR_MVC_MODE_ILLEGAL predictorMode illegal |
|
718 * ERR_MVC_X_ILLEGAL x < 0 or x > maxX |
|
719 * ERR_MVC_Y_ILLEGAL y < 0 |
|
720 * ERR_MVC_TIME_ILLEGAL time < 0 |
|
721 * |
|
722 * The following code may also be caused by a bit error: |
|
723 * ERR_MVC_MVPTR result is not legal |
|
724 * |
|
725 */ |
|
726 |
|
727 void mvcCalcMPEGMV(mvcData_t *mvcData, |
|
728 int mvdx, int mvdy, int *mvx, int *mvy, |
|
729 u_char predictorMode, u_char fourMVs, |
|
730 u_char topOfVP, u_char leftOfVP, u_char fmv3_out, |
|
731 int x, int y, int time, int mbType, int16 *error) |
|
732 /* {{-output"mvccalc.txt"}} */ |
|
733 { |
|
734 int |
|
735 i, j, /* loop variables */ |
|
736 mvcx[3], /* Candidates: mv[0] = MV1, mv[1] = MV2, mv[2] = MV3 */ |
|
737 mvcy[3], |
|
738 mvc1_out = 0, mvc2_out = 0, mvc3_out = 0, |
|
739 *mv, /* mvcx or mvcy */ |
|
740 *mvptr, /* == mvx or mvy */ |
|
741 mvd, /* mvdx or mvdy */ |
|
742 xx2, /* x * 2 */ |
|
743 yx2, /* y * 2 */ |
|
744 xmv1, /* index for MV1 */ |
|
745 xmv2, /* index for MV2 */ |
|
746 xmv3, /* index for MV3 */ |
|
747 ymv1, |
|
748 ymv2, |
|
749 ymv3; |
|
750 mvRowItem_t |
|
751 *currMvRow, |
|
752 *prevMvRow, |
|
753 *mvRow0, |
|
754 *mvRow1, |
|
755 *mvRow2; |
|
756 |
|
757 |
|
758 if (!mvx) { |
|
759 *error = ERR_MVC_MVX_ILLEGAL; |
|
760 return; |
|
761 } |
|
762 |
|
763 if (!mvy) { |
|
764 *error = ERR_MVC_MVY_ILLEGAL; |
|
765 return; |
|
766 } |
|
767 |
|
768 if ((fourMVs && predictorMode > 3) || |
|
769 (!fourMVs && predictorMode > 0)) { |
|
770 *error = ERR_MVC_MODE_ILLEGAL; |
|
771 return; |
|
772 } |
|
773 |
|
774 if (x < 0 || x > mvcData->currMaxX) { |
|
775 *error = ERR_MVC_X_ILLEGAL; |
|
776 return; |
|
777 } |
|
778 |
|
779 if (y < 0) { |
|
780 *error = ERR_MVC_Y_ILLEGAL; |
|
781 return; |
|
782 } |
|
783 |
|
784 if (time < 0) { |
|
785 *error = ERR_MVC_TIME_ILLEGAL; |
|
786 return; |
|
787 } |
|
788 |
|
789 updateRowPointers(x, y, time); |
|
790 mvRow0 = mvcData->mvRow0; |
|
791 mvRow1 = mvcData->mvRow1; |
|
792 mvRow2 = mvcData->mvRow2; |
|
793 |
|
794 /* Seek candidate predictors */ |
|
795 |
|
796 xx2 = x << 1; /* xx2 = x * 2 */ |
|
797 yx2 = y << 1; |
|
798 |
|
799 xmv1 = xx2 - 1 + (predictorMode & 1); |
|
800 xmv2 = xx2 + (predictorMode == 1); |
|
801 xmv3 = xx2 + 2 - (predictorMode > 1); |
|
802 ymv1 = yx2 + (predictorMode > 1); |
|
803 ymv2 = ymv3 = yx2 - 1 + (predictorMode > 1); |
|
804 |
|
805 if (predictorMode <= 1) { |
|
806 currMvRow = mvRow1; |
|
807 prevMvRow = mvRow0; |
|
808 } |
|
809 else { |
|
810 currMvRow = mvRow2; |
|
811 prevMvRow = mvRow1; |
|
812 } |
|
813 |
|
814 if ((x == 0 || leftOfVP) && !(predictorMode & 1)) { |
|
815 /* mv1 is outside the VP or VOP */ |
|
816 mvcx[0] = mvcy[0] = 0; |
|
817 mvc1_out = 1; |
|
818 } |
|
819 else { |
|
820 if (mvValidMPEG(currMvRow[xmv1], ymv1, time)) { |
|
821 mvcx[0] = currMvRow[xmv1].mvx; |
|
822 mvcy[0] = currMvRow[xmv1].mvy; |
|
823 } |
|
824 else mvcx[0] = mvcy[0] = 0; |
|
825 } |
|
826 |
|
827 if ((y == 0 || topOfVP) && predictorMode <= 1) { |
|
828 /* mv2 is outside the VP or VOP */ |
|
829 mvcx[1] = mvcy[1] = 0; |
|
830 mvc2_out = 1; |
|
831 } |
|
832 else { |
|
833 if (mvValidMPEG(prevMvRow[xmv2], ymv2, time)) { |
|
834 mvcx[1] = prevMvRow[xmv2].mvx; |
|
835 mvcy[1] = prevMvRow[xmv2].mvy; |
|
836 } |
|
837 else mvcx[1] = mvcy[1] = 0; |
|
838 } |
|
839 |
|
840 if ((y == 0 || fmv3_out || x == mvcData->currMaxX) && predictorMode <= 1) { |
|
841 /* mv3 is outside the VP or VOP */ |
|
842 mvcx[2] = mvcy[2] = 0; |
|
843 mvc3_out = 1; |
|
844 } |
|
845 else { |
|
846 if (mvValidMPEG(prevMvRow[xmv3], ymv3, time)) { |
|
847 mvcx[2] = prevMvRow[xmv3].mvx; |
|
848 mvcy[2] = prevMvRow[xmv3].mvy; |
|
849 } |
|
850 else |
|
851 mvcx[2] = mvcy[2] = 0; |
|
852 } |
|
853 |
|
854 for (j = 0, mv = mvcx, mvd = mvdx, mvptr = mvx; |
|
855 j < 2; |
|
856 j++, mv = mvcy, mvd = mvdy, mvptr = mvy) { |
|
857 |
|
858 int min, predictor; |
|
859 |
|
860 switch (mvc1_out + mvc2_out + mvc3_out) |
|
861 { |
|
862 case 3: |
|
863 predictor = 0; |
|
864 break; |
|
865 case 2: |
|
866 predictor = mv[0] + mv[1] + mv[2]; |
|
867 break; |
|
868 case 1: |
|
869 case 0: |
|
870 /* Find the median of the candidates */ |
|
871 min = mv[0]; |
|
872 predictor = 32767; |
|
873 |
|
874 for (i = 1; i < 3; i++) { |
|
875 if (mv[i] <= min) { |
|
876 predictor = min; |
|
877 min = mv[i]; |
|
878 continue; |
|
879 } |
|
880 if (mv[i] < predictor) |
|
881 predictor = mv[i]; |
|
882 } |
|
883 break; |
|
884 default: |
|
885 /* Should never happen */ |
|
886 vdcAssert(0); |
|
887 predictor = 0; |
|
888 break; |
|
889 } |
|
890 |
|
891 /* Count the new motion vector value */ |
|
892 *mvptr = predictor + mvd; |
|
893 |
|
894 if (*mvptr < -(mvcData->range)) |
|
895 *mvptr += 2*(mvcData->range); |
|
896 else if (*mvptr > (mvcData->range)-5) |
|
897 *mvptr -= 2*(mvcData->range); |
|
898 } |
|
899 |
|
900 /* Update motion vector buffer arrays */ |
|
901 switch (predictorMode) { |
|
902 case 0: |
|
903 if (fourMVs) { |
|
904 mvStore(mvRow1, xx2, yx2, *mvx, *mvy, time, mbType); |
|
905 } |
|
906 else { |
|
907 mvStoreMB(mvRow1, mvRow2, xx2, yx2, *mvx, *mvy, time, mbType); |
|
908 } |
|
909 break; |
|
910 case 1: |
|
911 mvStore(mvRow1, xx2 + 1, yx2, *mvx, *mvy, time, mbType); |
|
912 break; |
|
913 case 2: |
|
914 mvStore(mvRow2, xx2, yx2 + 1, *mvx, *mvy, time, mbType); |
|
915 break; |
|
916 case 3: |
|
917 mvStore(mvRow2, xx2 + 1, yx2 + 1, *mvx, *mvy, time, mbType); |
|
918 break; |
|
919 } |
|
920 } |
|
921 |
|
922 /* {{-output"mvcFree.txt"}} */ |
|
923 /* |
|
924 * |
|
925 * mvcFree |
|
926 * |
|
927 * Parameters: |
|
928 * mvcData mvcData_t structure |
|
929 * |
|
930 * Function: |
|
931 * This function frees the dynamic memory allocated by mvcStart. |
|
932 * mvcFree should be called at least when exiting the main program. |
|
933 * Alternatively it can be called whenever the playing a video has |
|
934 * ended. |
|
935 * |
|
936 * Returns: |
|
937 * Nothing |
|
938 * |
|
939 * Error codes: |
|
940 * None |
|
941 * |
|
942 * |
|
943 * |
|
944 * |
|
945 */ |
|
946 |
|
947 void mvcFree(mvcData_t *mvcData) |
|
948 /* {{-output"mvcFree.txt"}} */ |
|
949 { |
|
950 if (mvcData) { |
|
951 if (mvcData->mvRow) free(mvcData->mvRow); |
|
952 mvcData->currMaxX = -1; |
|
953 } |
|
954 } |
|
955 |
|
956 |
|
957 /* {{-output"mvcGetCurrentMVs.txt"}} */ |
|
958 /* |
|
959 * |
|
960 * mvcGetCurrentMVs |
|
961 * |
|
962 * Parameters: |
|
963 * mvcData mvcData_t structure |
|
964 * mvx |
|
965 * mvy |
|
966 * error error code |
|
967 * |
|
968 * Function: |
|
969 * These functions return the motion vectors of the current |
|
970 * blocks. |
|
971 * |
|
972 * Returns: |
|
973 * Changes mvx, mvy and possibly error. |
|
974 * |
|
975 * Error codes: |
|
976 * |
|
977 * ERR_MVC_CURR_NOT_VALID if the motion vectors for the current |
|
978 * macroblock do not exist |
|
979 * |
|
980 * ERR_MVC_CURR_NOT_CODED if the current macroblock was not coded |
|
981 * |
|
982 * ERR_MVC_CURR_INTRA if the current macroblock was coded in |
|
983 * INTRA mode |
|
984 * |
|
985 */ |
|
986 void mvcGetCurrentMVs(mvcData_t *mvcData, int *mvx, int *mvy, |
|
987 int16 *error) |
|
988 { |
|
989 int |
|
990 xx2 = mvcData->currX << 1, |
|
991 yx2 = mvcData->currY << 1; |
|
992 mvRowItem_t |
|
993 *mvRow1 = mvcData->mvRow1, |
|
994 *mvRow2 = mvcData->mvRow2; |
|
995 if (mvValid(mvRow1[xx2], yx2, mvcData->currTime) && |
|
996 mvRow1[xx2].type == MVC_MB_INTER) { |
|
997 mvx[0] = mvRow1[xx2].mvx; |
|
998 mvx[1] = mvRow1[xx2 + 1].mvx; |
|
999 mvx[2] = mvRow2[xx2].mvx; |
|
1000 mvx[3] = mvRow2[xx2 + 1].mvx; |
|
1001 mvy[0] = mvRow1[xx2].mvy; |
|
1002 mvy[1] = mvRow1[xx2 + 1].mvy; |
|
1003 mvy[2] = mvRow2[xx2].mvy; |
|
1004 mvy[3] = mvRow2[xx2 + 1].mvy; |
|
1005 } |
|
1006 else { |
|
1007 mvx[0] = mvx[1] = mvx[2] = mvx[3] = |
|
1008 mvy[0] = mvy[1] = mvy[2] = mvy[3] = 0; |
|
1009 if mvLegal(mvRow1[xx2], yx2, mvcData->currTime) { |
|
1010 if (mvRow1[xx2].type == MVC_MB_NOT_CODED) { |
|
1011 /*deb("mvcGetCurrentMVs: ERROR - macroblock not coded.\n");*/ |
|
1012 *error = ERR_MVC_CURR_NOT_CODED; |
|
1013 } |
|
1014 else if (mvRow1[xx2].type == MVC_MB_INTRA) { |
|
1015 /*deb("mvcGetCurrentMVs: ERROR - INTRA macroblock.\n");*/ |
|
1016 *error = ERR_MVC_CURR_INTRA; |
|
1017 } |
|
1018 else { |
|
1019 /*deb("mvcGetCurrentMVs: ERROR - macroblock not valid.\n");*/ |
|
1020 *error = ERR_MVC_CURR_NOT_VALID; |
|
1021 } |
|
1022 } |
|
1023 else { |
|
1024 /*deb("mvcGetCurrentMVs: ERROR - macroblock not valid.\n");*/ |
|
1025 *error = ERR_MVC_CURR_NOT_VALID; |
|
1026 } |
|
1027 } |
|
1028 } |
|
1029 |
|
1030 /* {{-output"mvcGetNeighbourMVs.txt"}} */ |
|
1031 /* |
|
1032 * |
|
1033 * mvcGetCurrNeighbourMVs |
|
1034 * mvcGetPrevNeighbourMVs |
|
1035 * |
|
1036 * Parameters: |
|
1037 * mvcData mvcData_t structure |
|
1038 * |
|
1039 * nmvx pointer to motion vector x component array |
|
1040 * nmvy pointer to motion vector y component array |
|
1041 * The size of the array must be 6. The indexing of the |
|
1042 * neighboring motion vectors goes like this: |
|
1043 * (X = the motion vector which is investigated, i.e. |
|
1044 * the last one decoded (mvcGetCurrNeighbourMVs) or |
|
1045 * the one before the last one (mvcGetPrevNeighbourMVs)) |
|
1046 * 2 3 |
|
1047 * 0 X X 4 |
|
1048 * 1 X X 5 |
|
1049 * It is suggested that the following defines are used |
|
1050 * instead of values: |
|
1051 * MVC_XM1_UP (0) |
|
1052 * MVC_XM1_DOWN (1) |
|
1053 * MVC_YM1_LEFT (2) |
|
1054 * MVC_YM1_RIGHT (3) |
|
1055 * MVC_XP1_UP (4) |
|
1056 * MVC_XP1_DOWN (5) |
|
1057 * (M stand for minus and P for plus) |
|
1058 * |
|
1059 * pmvx and pmvy are for mvcGetPrevNeighbourMVs only: |
|
1060 * pmvx pointer to the motion vector x component array of the |
|
1061 * previous macroblock |
|
1062 * pmvy pointer to the motion vector y component array of the |
|
1063 * previous macroblock |
|
1064 * The size of the array must be 4. The indexing is similar |
|
1065 * to normal block indexing inside a macroblock: |
|
1066 * 0 1 |
|
1067 * 2 3 |
|
1068 * |
|
1069 * error error code |
|
1070 * |
|
1071 * Function: |
|
1072 * These functions return the motion vectors of the neighboring |
|
1073 * blocks (on the left side, above or on the right side) of the |
|
1074 * macroblock which is investigated, i.e. |
|
1075 * - the last one decoded (mvcGetCurrNeighbourMVs) or |
|
1076 * - the one before the last one (mvcGetPrevNeighbourMVs)) |
|
1077 * |
|
1078 * The H.263 standard for Overlapped motion compensation for luminance |
|
1079 * (Annex F.3) is followed, that is: |
|
1080 * If one of the surrounding macroblocks was not coded, the |
|
1081 * corresponding remote motion vector is set to zero. If one of the |
|
1082 * surrounding (macro)blocks was coded in INTRA mode, the corresponding |
|
1083 * remote motion vector is replaced by the motion vector for the |
|
1084 * current block expect when in PB-frames mode. In this case (INTRA |
|
1085 * block in PB-frame mode), the INTRA block's motion vector is used. |
|
1086 * If the current block is at the border of the picture and therefore |
|
1087 * a surrounding block is not present, the corresponding remote motion |
|
1088 * vector is replaced by the current motion vector. |
|
1089 * |
|
1090 * mvcGetPrevNeighbourMVs also returns the motion vector for the |
|
1091 * previous macroblock. |
|
1092 * |
|
1093 * Returns: |
|
1094 * Changes nmvx, nmvy, pmvx, pmvy and possibly error. |
|
1095 * |
|
1096 * Error codes: |
|
1097 * ERR_MVC_NO_PREV_MB if the current MB has x coordinate 0 and |
|
1098 * mvcGetPrevNeighbourMVs is called |
|
1099 * |
|
1100 * ERR_MVC_NEIGHBOUR_NOT_VALID if one of the neighboring MVs is not |
|
1101 * valid, i.e. it has not been updated |
|
1102 * for this frame. The MV in nmvx and nmvy |
|
1103 * is set to zero. |
|
1104 * |
|
1105 * for mvcGetPrevNeighbourMVs only: |
|
1106 * ERR_MVC_PREV_NOT_VALID if the motion vectors for the previous |
|
1107 * macroblock do not exist |
|
1108 * |
|
1109 * ERR_MVC_PREV_NOT_CODED if the previous macroblock was not coded |
|
1110 * |
|
1111 * ERR_MVC_PREV_INTRA if the previous macroblock was coded in |
|
1112 * INTRA mode |
|
1113 * |
|
1114 * |
|
1115 * |
|
1116 * |
|
1117 * |
|
1118 * |
|
1119 * |
|
1120 */ |
|
1121 |
|
1122 void mvcGetCurrNeighbourMVs(mvcData_t *mvcData, int *nmvx, int *nmvy, |
|
1123 int16 *error) |
|
1124 /* {{-output"mvcGetNeighbourMVs.txt"}} */ |
|
1125 { |
|
1126 mvRowItem_t |
|
1127 *mvRow1 = mvcData->mvRow1; |
|
1128 int xx2 = mvcData->currX << 1; |
|
1129 |
|
1130 mvcGetNeighbourMVs(mvcData, mvcData->currX, mvcData->currY, |
|
1131 mvcData->currTime, nmvx, nmvy, 0, error); |
|
1132 if (*error) { |
|
1133 if mvLegal(mvRow1[xx2], mvcData->currY << 1, mvcData->currTime) { |
|
1134 if (mvRow1[xx2].type == MVC_MB_NOT_CODED) { |
|
1135 /*deb("mvcGetPrevNeighbourMVs: ERROR - macroblock not coded.\n");*/ |
|
1136 *error = ERR_MVC_CURR_NOT_CODED; |
|
1137 } |
|
1138 else if (mvRow1[xx2].type == MVC_MB_INTRA) { |
|
1139 /*deb("mvcGetPrevNeighbourMVs: ERROR - INTRA macroblock.\n");*/ |
|
1140 *error = ERR_MVC_CURR_INTRA; |
|
1141 } |
|
1142 else { |
|
1143 /*deb("mvcGetPrevNeighbourMVs: ERROR - macroblock not valid.\n");*/ |
|
1144 *error = ERR_MVC_CURR_NOT_VALID; |
|
1145 } |
|
1146 } |
|
1147 else { |
|
1148 /*deb("mvcGetPrevNeighbourMVs: ERROR - macroblock not valid.\n");*/ |
|
1149 *error = ERR_MVC_CURR_NOT_VALID; |
|
1150 } |
|
1151 } |
|
1152 } |
|
1153 |
|
1154 /* {{-output"mvcGetPrevNeighbourMVs.txt"}} */ |
|
1155 void mvcGetPrevNeighbourMVs(mvcData_t *mvcData, int *nmvx, int *nmvy, |
|
1156 int *pmvx, int *pmvy, u_char *fourMVs, int16 *error) |
|
1157 /* {{-output"mvcGetPrevNeighbourMVs.txt"}} */ |
|
1158 { |
|
1159 int |
|
1160 currX = mvcData->currX, |
|
1161 currY = mvcData->currY; |
|
1162 mvRowItem_t |
|
1163 *mvRow1 = mvcData->mvRow1, |
|
1164 *mvRow2 = mvcData->mvRow2; |
|
1165 |
|
1166 if (currX > 0) { |
|
1167 int xx2 = (currX - 1) << 1; |
|
1168 mvcGetNeighbourMVs(mvcData, currX - 1, currY, |
|
1169 mvcData->currTime, nmvx, nmvy, 1, error); |
|
1170 if (mvValid(mvRow1[xx2], currY << 1, mvcData->currTime) && |
|
1171 mvRow1[xx2].type == MVC_MB_INTER) { |
|
1172 pmvx[0] = mvRow1[xx2].mvx; |
|
1173 pmvx[1] = mvRow1[xx2 + 1].mvx; |
|
1174 pmvx[2] = mvRow2[xx2].mvx; |
|
1175 pmvx[3] = mvRow2[xx2 + 1].mvx; |
|
1176 pmvy[0] = mvRow1[xx2].mvy; |
|
1177 pmvy[1] = mvRow1[xx2 + 1].mvy; |
|
1178 pmvy[2] = mvRow2[xx2].mvy; |
|
1179 pmvy[3] = mvRow2[xx2 + 1].mvy; |
|
1180 *fourMVs = mvRow1[xx2].fourMVs; |
|
1181 } |
|
1182 else { |
|
1183 pmvx[0] = pmvx[1] = pmvx[2] = pmvx[3] = |
|
1184 pmvy[0] = pmvy[1] = pmvy[2] = pmvy[3] = 0; |
|
1185 *fourMVs = 0; |
|
1186 if mvLegal(mvRow1[xx2], currY << 1, mvcData->currTime) { |
|
1187 if (mvRow1[xx2].type == MVC_MB_NOT_CODED) { |
|
1188 /*deb("mvcGetPrevNeighbourMVs: ERROR - macroblock not coded.\n");*/ |
|
1189 *error = ERR_MVC_PREV_NOT_CODED; |
|
1190 } |
|
1191 else if (mvRow1[xx2].type == MVC_MB_INTRA) { |
|
1192 /*deb("mvcGetPrevNeighbourMVs: ERROR - INTRA macroblock.\n");*/ |
|
1193 *error = ERR_MVC_PREV_INTRA; |
|
1194 } |
|
1195 else { |
|
1196 /*deb("mvcGetPrevNeighbourMVs: ERROR - macroblock not valid.\n");*/ |
|
1197 *error = ERR_MVC_PREV_NOT_VALID; |
|
1198 } |
|
1199 } |
|
1200 else { |
|
1201 /*deb("mvcGetPrevNeighbourMVs: ERROR - macroblock not valid.\n");*/ |
|
1202 *error = ERR_MVC_PREV_NOT_VALID; |
|
1203 } |
|
1204 } |
|
1205 } |
|
1206 else { |
|
1207 /*deb("mvcGetPrevNeighbourMVs: ERROR - no previous macroblock.\n");*/ |
|
1208 *error = ERR_MVC_NO_PREV_MB; |
|
1209 } |
|
1210 } |
|
1211 |
|
1212 |
|
1213 /* {{-output"mvcGetPrevMVFsAndMVBs.txt"}} */ |
|
1214 /* |
|
1215 * |
|
1216 * mvcGetPrevMVFsAndMVBs |
|
1217 * |
|
1218 * Parameters: |
|
1219 * mvcData mvcData_t structure |
|
1220 * |
|
1221 * mvfx the resulting forward motion vector |
|
1222 * mvfy |
|
1223 * |
|
1224 * mvbx the resulting backward motion vector |
|
1225 * mvby |
|
1226 * |
|
1227 * fourMVs 1 if there is four motion vectors per macroblock |
|
1228 * 0 otherwise |
|
1229 * |
|
1230 * Function: |
|
1231 * This function gets the forward and backward motion vectors for the |
|
1232 * previous B macroblock. |
|
1233 * |
|
1234 * Returns: |
|
1235 * Changes *mvfx, *mvfy, *mvbx, *mvby and *fourMVs. |
|
1236 * |
|
1237 * Error codes: |
|
1238 * ERR_MVC_NO_PREV_MB if the current MB has x coordinate 0 and |
|
1239 * mvcGetPrevNeighbourMVs is called |
|
1240 * |
|
1241 * ERR_MVC_PREV_NOT_VALID if the motion vectors for the previous |
|
1242 * macroblock do not exist |
|
1243 * |
|
1244 * |
|
1245 */ |
|
1246 |
|
1247 void mvcGetPrevMVFsAndMVBs(mvcData_t *mvcData, int *mvfx, int *mvfy, |
|
1248 int *mvbx, int *mvby, u_char *fourMVs, int16 *error) |
|
1249 /* {{-output"mvcGetPrevMVFsAndMVBs.txt"}} */ |
|
1250 { |
|
1251 mvBFBufItem_t |
|
1252 *mvFBuf = mvcData->mvFBufArray[mvcData->mvBFBufIndex ^ 1], |
|
1253 *mvBBuf = mvcData->mvBBufArray[mvcData->mvBFBufIndex ^ 1]; |
|
1254 int i; |
|
1255 |
|
1256 if (mvcData->currX > 0) { |
|
1257 if (mvBBuf[0].x == mvcData->currX - 1 && |
|
1258 mvValid(mvBBuf[0], mvcData->currY, mvcData->currTime)) { |
|
1259 *fourMVs = mvBBuf[0].fourMVs; |
|
1260 for (i = 0; i < 4; i++) { |
|
1261 mvfx[i] = mvFBuf[i].mvx; |
|
1262 mvfy[i] = mvFBuf[i].mvy; |
|
1263 mvbx[i] = mvBBuf[i].mvx; |
|
1264 mvby[i] = mvBBuf[i].mvy; |
|
1265 } |
|
1266 } |
|
1267 else { |
|
1268 /*deb("mvcGetPrevMVFsAndMVBs: ERROR - PREV_NOT_VALID.\n");*/ |
|
1269 *error = ERR_MVC_PREV_NOT_VALID; |
|
1270 } |
|
1271 } |
|
1272 else { |
|
1273 /*deb("mvcGetPrevMVFsAndMVBs: ERROR - NO_PREV_MB.\n");*/ |
|
1274 *error = ERR_MVC_NO_PREV_MB; |
|
1275 } |
|
1276 } |
|
1277 |
|
1278 |
|
1279 /* {{-output"mvcMarkMB.txt"}} */ |
|
1280 /* |
|
1281 * |
|
1282 * mvcMarkMBIntra |
|
1283 * mvcMarkMBNotCoded |
|
1284 * |
|
1285 * Parameters: |
|
1286 * mvcData mvcData_t structure |
|
1287 * x the x coordinate of the MB (0 .. maxX) |
|
1288 * y the y coordinate of the MB |
|
1289 * (0 .. macroblock rows in frame - 1) |
|
1290 * |
|
1291 * time a value which is related to the time when the current |
|
1292 * frame must be shown. This value should be unique |
|
1293 * among a relatively small group of consecutive frames. |
|
1294 * |
|
1295 * Function: |
|
1296 * These functions are used to mark that the macroblock is either |
|
1297 * intra coded or not coded at all. The information is used when |
|
1298 * deciding the neighboring motion vectors of a macroblock in |
|
1299 * mvcGetPrevNeighbourMVs and mvcGetCurrNeighbourMVs. |
|
1300 * Note that mvcMarkMBIntra should not be called in case of |
|
1301 * INTRA block in PB-frame mode. Instead mvcCalcMV should be used. |
|
1302 * |
|
1303 * Returns: |
|
1304 * Nothing |
|
1305 * |
|
1306 * Error codes: |
|
1307 * None |
|
1308 * |
|
1309 * |
|
1310 * |
|
1311 */ |
|
1312 |
|
1313 void mvcMarkMBIntra(mvcData_t *mvcData, int x, int y, int time) |
|
1314 /* {{-output"mvcMarkMB.txt"}} */ |
|
1315 { |
|
1316 int |
|
1317 xx2 = x << 1, |
|
1318 yx2 = y << 1; |
|
1319 mvRowItem_t |
|
1320 *mvRow1, |
|
1321 *mvRow2; |
|
1322 |
|
1323 updateRowPointers(x, y, time); |
|
1324 mvRow1 = mvcData->mvRow1; |
|
1325 mvRow2 = mvcData->mvRow2; |
|
1326 mvStoreMB(mvRow1, mvRow2, xx2, yx2, MVD_INTRA, MVD_INTRA, time, MVC_MB_INTRA); |
|
1327 } |
|
1328 |
|
1329 /* {{-output"mvcMarkMBNotCoded.txt"}} */ |
|
1330 void mvcMarkMBNotCoded(mvcData_t *mvcData, int x, int y, int time) |
|
1331 /* {{-output"mvcMarkMBNotCoded.txt"}} */ |
|
1332 { |
|
1333 int |
|
1334 xx2 = x << 1, |
|
1335 yx2 = y << 1; |
|
1336 mvRowItem_t |
|
1337 *mvRow1, |
|
1338 *mvRow2; |
|
1339 |
|
1340 updateRowPointers(x, y, time); |
|
1341 mvRow1 = mvcData->mvRow1; |
|
1342 mvRow2 = mvcData->mvRow2; |
|
1343 mvStoreMB(mvRow1, mvRow2, xx2, yx2, MVD_NOT_CODED, |
|
1344 MVD_NOT_CODED, time, MVC_MB_NOT_CODED); |
|
1345 } |
|
1346 |
|
1347 |
|
1348 /* {{-output"mvcStart.txt"}} */ |
|
1349 /* |
|
1350 * |
|
1351 * mvcStart |
|
1352 * |
|
1353 * Parameters: |
|
1354 * mvcData mvcData_t structure |
|
1355 * |
|
1356 * maxX the largest x coordinate possible for a macroblock |
|
1357 * If maxX if different from maxX when the function was |
|
1358 * last called, a new dynamic memory allocation is made. |
|
1359 * |
|
1360 * lumWidth Luminance width |
|
1361 * |
|
1362 * lumHeight Luminance height |
|
1363 * |
|
1364 * error error code |
|
1365 * |
|
1366 * Function: |
|
1367 * This function initialises motion vector buffers. It also allocates |
|
1368 * buffer memory if needed. |
|
1369 * One should call mvcStart in the beginning of each video sequence. |
|
1370 * |
|
1371 * Returns: |
|
1372 * Nothing |
|
1373 * |
|
1374 * Error codes: |
|
1375 * ERR_MVC_ALLOC1 dynamic allocation error |
|
1376 * ERR_MVC_MAX_X_ILLEGAL maxX <= 0 |
|
1377 * |
|
1378 * |
|
1379 * |
|
1380 * |
|
1381 */ |
|
1382 |
|
1383 void mvcStart(mvcData_t *mvcData, int maxX, int lumWidth, int lumHeight, int16 *error) |
|
1384 /* {{-output"mvcStart.txt"}} */ |
|
1385 { |
|
1386 int |
|
1387 i, j, /* loop variables */ |
|
1388 rowSize; /* the number of items in prevMV?Row */ |
|
1389 |
|
1390 if (maxX < 0) { |
|
1391 *error = ERR_MVC_MAX_X_ILLEGAL; |
|
1392 return; |
|
1393 } |
|
1394 |
|
1395 rowSize = (maxX + 1) << 1; |
|
1396 |
|
1397 if (mvcData->currMaxX != maxX || mvcData->mvRow == NULL) { |
|
1398 /* frame size changed */ |
|
1399 |
|
1400 if (mvcData->mvRow) free(mvcData->mvRow); |
|
1401 |
|
1402 mvcData->mvRow = (mvRowItem_t *) vdcMalloc( |
|
1403 rowSize * 3 * sizeof(mvRowItem_t)); |
|
1404 if (mvcData->mvRow == NULL) { |
|
1405 deb("mvcStart: ERROR - memory allocation failed.\n"); |
|
1406 *error = ERR_MVC_ALLOC1; |
|
1407 return; |
|
1408 } |
|
1409 |
|
1410 mvcData->currMaxX = maxX; |
|
1411 } |
|
1412 |
|
1413 /* Horizontal motion vector range when PLUSTYPE present and UUI = 1 |
|
1414 See Table D.1/H.263 */ |
|
1415 if (mvcData->currLumHeight != lumHeight) |
|
1416 { |
|
1417 mvcData->currLumHeight = lumHeight; |
|
1418 if ((lumHeight>=4)&&(lumHeight<=288)) |
|
1419 { |
|
1420 mvcData->mvRangeLowY = -320; |
|
1421 mvcData->mvRangeHighY = 315; |
|
1422 } |
|
1423 else if ((lumHeight>=292)&&(lumHeight<=576)) |
|
1424 { |
|
1425 mvcData->mvRangeLowY = -640; |
|
1426 mvcData->mvRangeHighY = 635; |
|
1427 } |
|
1428 else if ((lumHeight>=580)&&(lumHeight<=1152)) |
|
1429 { |
|
1430 mvcData->mvRangeLowY = -1280; |
|
1431 mvcData->mvRangeHighY = 1275; |
|
1432 } |
|
1433 } |
|
1434 |
|
1435 /* Vertical motion vector range when PLUSTYPE present and UUI = 1 |
|
1436 See Table D.2/H.263 */ |
|
1437 if (mvcData->currLumWidth != lumWidth) |
|
1438 { |
|
1439 mvcData->currLumWidth = lumWidth; |
|
1440 if ((lumWidth>=4)&&(lumWidth<=352)) |
|
1441 { |
|
1442 mvcData->mvRangeLowX = -320; |
|
1443 mvcData->mvRangeHighX = 315; |
|
1444 } |
|
1445 else if ((lumWidth>=356)&&(lumWidth<=704)) |
|
1446 { |
|
1447 mvcData->mvRangeLowX = -640; |
|
1448 mvcData->mvRangeHighX = 635; |
|
1449 } |
|
1450 else if ((lumWidth>=708)&&(lumWidth<=1408)) |
|
1451 { |
|
1452 mvcData->mvRangeLowX = -1280; |
|
1453 mvcData->mvRangeHighX = 1275; |
|
1454 } |
|
1455 else if ((lumWidth>=1412)&&(lumWidth<=2048)) |
|
1456 { |
|
1457 mvcData->mvRangeLowX = -2560; |
|
1458 mvcData->mvRangeHighX = 2555; |
|
1459 } |
|
1460 } |
|
1461 /* Set time to be impossible */ |
|
1462 for (i = 0; i < 3 * rowSize; i++) { |
|
1463 mvcData->mvRow[i].time = -2; |
|
1464 } |
|
1465 |
|
1466 for (j = 0; j < 2; j++) { |
|
1467 for (i = 0; i < 4; i++) { |
|
1468 mvcData->mvFBufArray[j][i].time = -2; |
|
1469 mvcData->mvBBufArray[j][i].time = -2; |
|
1470 } |
|
1471 } |
|
1472 |
|
1473 mvcData->currX = -1; |
|
1474 mvcData->currY = -1; |
|
1475 mvcData->currTime = -2; |
|
1476 mvcData->mvRowIndex = 0; |
|
1477 mvcData->mvBFBufIndex = 0; |
|
1478 mvcData->prevPredMode = 3; |
|
1479 } |
|
1480 |
|
1481 |
|
1482 /* Local functions */ |
|
1483 |
|
1484 |
|
1485 |
|
1486 /* |
|
1487 * |
|
1488 * mvcGetNeighbourMVs |
|
1489 * |
|
1490 * Parameters: |
|
1491 * mvcData mvcData_t structure |
|
1492 * x |
|
1493 * y macroblock coordinates |
|
1494 * time time reference |
|
1495 * nmvx pointer to motion vector x component array |
|
1496 * nmvy pointer to motion vector y component array |
|
1497 * See mvcGetCurrNeighbourMVs/mvcGetPrevNeighbourMVs for |
|
1498 * description. |
|
1499 * prevFlag If this flag is set, the previous border values should |
|
1500 * be used. |
|
1501 * error error code |
|
1502 * |
|
1503 * Function: |
|
1504 * This function return the motion vectors of the neighboring |
|
1505 * blocks (on the left side, above or on the right side) of the |
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1506 * macroblock which is investigated. mvcGetNeighbourMVs is used |
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1507 * by mvcGetCurrNeighbourMVs and mvcGetPrevNeighbourMVs. |
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1508 * See also the functional description for these functions. |
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1509 * |
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1510 * Returns: |
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1511 * Changes nmvx and nmvy and possibly error. |
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1512 * |
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1513 * Error codes: |
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1514 * ERR_MVC_NEIGHBOUR_NOT_VALID if one of the neighboring MVs is not |
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1515 * valid, i.e. it has not been updated |
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1516 * for this frame. The MV in nmvx and nmvy |
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1517 * is set to zero. |
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1518 * |
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1519 * |
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1520 */ |
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1521 |
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1522 static void mvcGetNeighbourMVs(mvcData_t *mvcData, int x, int y, int time, |
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1523 int *nmvx, int *nmvy, int prevFlag, int16 *error) |
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1524 { |
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1525 int |
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1526 xx2 = x << 1, |
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1527 yx2 = y << 1, |
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1528 xtmp, |
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1529 ytmp, |
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1530 rightOfBorder, |
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1531 downOfBorder, |
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1532 leftOfBorder; |
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1533 mvRowItem_t |
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1534 *mvRow0 = mvcData->mvRow0, |
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1535 *mvRow1 = mvcData->mvRow1, |
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1536 *mvRow2 = mvcData->mvRow2; |
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1537 |
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1538 if (prevFlag) { |
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1539 rightOfBorder = mvcData->rightOfBorderPrev; |
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1540 downOfBorder = (mvcData->fSS)?mvcData->downOfBorderPrev:(y==0); |
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1541 leftOfBorder = 0; |
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1542 } |
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1543 else { |
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1544 rightOfBorder = mvcData->rightOfBorder; |
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1545 downOfBorder = (mvcData->fSS)?mvcData->downOfBorder:(y==0); |
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1546 leftOfBorder = (mvcData->fSS)?(x == mvcData->currMaxX)||(mvcData->leftOfBorder):(x == mvcData->currMaxX); |
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1547 } |
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1548 //if (x > 0) { |
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1549 if (!rightOfBorder) { |
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1550 xtmp = xx2 - 1; |
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1551 mvcCheckAndSet(mvRow1, xtmp, yx2, time, MVC_XM1_UP, nmvx, nmvy, |
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1552 mvRow1, xx2, yx2, error); |
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1553 mvcCheckAndSet(mvRow2, xtmp, yx2 + 1, time, MVC_XM1_DOWN, nmvx, nmvy, |
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1554 mvRow2, xx2, yx2 + 1, error); |
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1555 } |
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1556 else { |
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1557 mvcSetToCurrent(mvRow1, xx2, yx2, time, MVC_XM1_UP, nmvx, nmvy, |
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1558 error); |
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1559 mvcSetToCurrent(mvRow2, xx2, yx2 + 1, time, MVC_XM1_DOWN, nmvx, nmvy, |
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1560 error); |
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1561 } |
|
1562 |
|
1563 //if (y > 0) { |
|
1564 if (!downOfBorder) { |
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1565 ytmp = yx2 - 1; |
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1566 mvcCheckAndSet(mvRow0, xx2, ytmp, time, MVC_YM1_LEFT, nmvx, nmvy, |
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1567 mvRow1, xx2, yx2, error); |
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1568 mvcCheckAndSet(mvRow0, xx2 + 1, ytmp, time, MVC_YM1_RIGHT, nmvx, nmvy, |
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1569 mvRow1, xx2 + 1, yx2, error); |
|
1570 } |
|
1571 else { |
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1572 mvcSetToCurrent(mvRow1, xx2, yx2, time, MVC_YM1_LEFT, nmvx, nmvy, |
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1573 error); |
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1574 mvcSetToCurrent(mvRow1, xx2 + 1, yx2, time, MVC_YM1_RIGHT, nmvx, nmvy, |
|
1575 error); |
|
1576 } |
|
1577 |
|
1578 //if (x < mvcData->currMaxX) { |
|
1579 if (!leftOfBorder) { |
|
1580 xtmp = xx2 + 2; |
|
1581 mvcCheckAndSet(mvRow1, xtmp, yx2, time, MVC_XP1_UP, nmvx, nmvy, |
|
1582 mvRow1, xtmp - 1, yx2, error); |
|
1583 mvcCheckAndSet(mvRow2, xtmp, yx2 + 1, time, MVC_XP1_DOWN, nmvx, nmvy, |
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1584 mvRow2, xtmp -1, yx2 + 1, error); |
|
1585 } |
|
1586 else { |
|
1587 xtmp = xx2 + 1; |
|
1588 mvcSetToCurrent(mvRow1, xtmp, yx2, time, MVC_XP1_UP, nmvx, nmvy, |
|
1589 error); |
|
1590 mvcSetToCurrent(mvRow2, xtmp, yx2 + 1, time, MVC_XP1_DOWN, nmvx, nmvy, |
|
1591 error); |
|
1592 } |
|
1593 } |
|
1594 |
|
1595 |
|
1596 |
|
1597 /* |
|
1598 * mvcCheckAndSet |
|
1599 * |
|
1600 * Parameters: |
|
1601 * mvRowPtr Source row item pointer |
|
1602 * xind x index of the source block |
|
1603 * yind y index of the source block |
|
1604 * timeref time reference |
|
1605 * nind index to motion vector arrays ( x and y) |
|
1606 * nmvx pointer to motion vector x component array |
|
1607 * nmvy pointer to motion vector y component array |
|
1608 * cmvRowPtr Target row item pointer |
|
1609 * cxind x index of the target block |
|
1610 * cyind y index of the target block |
|
1611 * error error code |
|
1612 * |
|
1613 * Function: |
|
1614 * Sets the correct value for neighboring motion vector |
|
1615 * used from: mvcGetNeighbourMVs |
|
1616 * |
|
1617 * Returns: |
|
1618 * Nothing |
|
1619 * |
|
1620 * Error codes: |
|
1621 * |
|
1622 */ |
|
1623 |
|
1624 __inline static void mvcCheckAndSet( |
|
1625 mvRowItem_t *mvRowPtr, int xind, int yind, int timeref, int nind, |
|
1626 int *nmvx, int *nmvy, mvRowItem_t *cmvRowPtr, int cxind, int cyind, |
|
1627 int16 *error) |
|
1628 { |
|
1629 |
|
1630 if (mvLegal(mvRowPtr[xind], yind, timeref)) { |
|
1631 if (mvRowPtr[xind].mvx >= MVD_UMIN_V2) { |
|
1632 nmvx[nind] = mvRowPtr[xind].mvx; |
|
1633 nmvy[nind] = mvRowPtr[xind].mvy; |
|
1634 } |
|
1635 else if (mvRowPtr[xind].mvx == MVD_INTRA) { |
|
1636 if (mvLegal(cmvRowPtr[cxind], cyind, timeref)) { |
|
1637 if (mvValid(cmvRowPtr[cxind], cyind, timeref)) { |
|
1638 nmvx[nind] = cmvRowPtr[cxind].mvx; |
|
1639 nmvy[nind] = cmvRowPtr[cxind].mvy; |
|
1640 } |
|
1641 else /* Not coded macroblock */ |
|
1642 nmvx[nind] = nmvy[nind] = 0; |
|
1643 } |
|
1644 else { |
|
1645 deb("mvcCheckAndSet: ERROR - neighbour not valid.\n"); |
|
1646 *error = ERR_MVC_NEIGHBOUR_NOT_VALID; |
|
1647 nmvx[nind] = nmvy[nind] = 0; |
|
1648 } |
|
1649 } |
|
1650 else { /* MVD_NOT_CODED */ |
|
1651 nmvx[nind] = nmvy[nind] = 0; |
|
1652 } |
|
1653 } |
|
1654 else { |
|
1655 deb("mvcCheckAndSet: ERROR - neighbour not valid.\n"); |
|
1656 *error = ERR_MVC_NEIGHBOUR_NOT_VALID; |
|
1657 nmvx[nind] = nmvy[nind] = 0; |
|
1658 } |
|
1659 } |
|
1660 |
|
1661 /* |
|
1662 * mvcSetToCurrent |
|
1663 * |
|
1664 * Parameters: |
|
1665 * mvRowPtr Current row item pointer |
|
1666 * xind x index of the block |
|
1667 * yind y index of the block |
|
1668 * timeref time reference |
|
1669 * nind index to motion vector arrays ( x and y) |
|
1670 * nmvx pointer to motion vector x component array |
|
1671 * nmvy pointer to motion vector y component array |
|
1672 * error error code |
|
1673 * |
|
1674 * Function: |
|
1675 * Sets the correct value for neighboring motion vector using current |
|
1676 * motion vector, used in cases of border used from: mvcGetNeighbourMVs |
|
1677 * |
|
1678 * Returns: |
|
1679 * Nothing |
|
1680 * |
|
1681 * Error codes: |
|
1682 * |
|
1683 * History |
|
1684 */ |
|
1685 |
|
1686 __inline static void mvcSetToCurrent( |
|
1687 mvRowItem_t *mvRowPtr, int xind, int yind, int timeref, int nind, |
|
1688 int *nmvx, int *nmvy, int16 *error) |
|
1689 { |
|
1690 if (mvValid(mvRowPtr[xind], yind, timeref)) { |
|
1691 nmvx[nind] = mvRowPtr[xind].mvx; |
|
1692 nmvy[nind] = mvRowPtr[xind].mvy; |
|
1693 } |
|
1694 else { |
|
1695 deb("mvcSetToCurrent: ERROR - neighbour not valid.\n"); |
|
1696 *error = ERR_MVC_NEIGHBOUR_NOT_VALID; |
|
1697 nmvx[nind] = nmvy[nind] = 0; |
|
1698 } |
|
1699 } |
|
1700 |
|
1701 // End of File |