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1 /* |
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2 * Copyright (c) 2003, 2004 Nokia Corporation and/or its subsidiary(-ies). |
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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 "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 * |
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14 * Description: JP2KPacket class used to collect packet related |
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15 * information such as tag tree and list of codeblocks. |
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16 * |
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17 */ |
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18 |
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19 |
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20 // INCLUDE FILES |
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21 #include <icl/imagecodec.h> |
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22 #include "JP2KImageUtils.h" |
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23 #include "JP2KStreamReader.h" |
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24 #include "JP2KTileInfo.h" |
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25 #include "JP2KImageInfo.h" |
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26 #include "JP2KCodeBlock.h" |
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27 #include "JP2KPacket.h" |
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28 #include "JP2KSubband.h" |
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29 #include "JP2KComponentInfo.h" |
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30 |
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31 // EXTERNAL DATA STRUCTURES |
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32 |
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33 // EXTERNAL FUNCTION PROTOTYPES |
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34 |
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35 // CONSTANTS |
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36 |
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37 // MACROS |
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38 |
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39 // LOCAL CONSTANTS AND MACROS |
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40 |
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41 // MODULE DATA STRUCTURES |
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42 |
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43 // LOCAL FUNCTION PROTOTYPES |
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44 |
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45 // FORWARD DECLARATIONS |
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46 |
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47 // ============================ MEMBER FUNCTIONS =============================== |
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48 |
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49 // ----------------------------------------------------------------------------- |
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50 // CJ2kPacket::CJ2kPacket |
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51 // C++ default constructor can NOT contain any code, that |
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52 // might leave. |
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53 // ----------------------------------------------------------------------------- |
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54 // |
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55 CJ2kPacket::CJ2kPacket( TUint16 aLayer ) : |
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56 iTagTreeLevel(1), |
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57 iLayer(aLayer), |
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58 iCodeBlockList(1) |
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59 { |
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60 } |
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61 |
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62 // Destructor |
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63 CJ2kPacket::~CJ2kPacket() |
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64 { |
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65 delete iIncluded; |
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66 iIncluded = 0; |
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67 |
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68 delete iTagTreeInfo; |
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69 iTagTreeInfo = 0; |
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70 |
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71 delete iIncTagTreeValue; |
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72 iIncTagTreeValue = 0; |
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73 |
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74 delete iIncTagTreeState; |
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75 iIncTagTreeState = 0; |
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76 |
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77 delete iMsbTagTreeValue; |
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78 iMsbTagTreeValue = 0; |
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79 |
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80 delete iMsbTagTreeState; |
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81 iMsbTagTreeState = 0; |
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82 |
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83 iCodeBlockList.ResetAndDestroy(); |
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84 } |
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85 |
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86 // ----------------------------------------------------------------------------- |
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87 // CJ2kPacket::SetPacketCanvas |
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88 // Set the canvas of the packet |
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89 // (other items were commented in a header). |
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90 // ----------------------------------------------------------------------------- |
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91 // |
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92 void CJ2kPacket::SetPacketCanvas( TInt32 aX, TInt32 aY, TInt32 aWidth, TInt32 aHeight ) |
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93 { |
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94 iPacketCanvas.iTl = TPoint( aX, aY ); |
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95 iPacketCanvas.SetWidth( aWidth ); |
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96 iPacketCanvas.SetHeight( aHeight ); |
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97 } |
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98 |
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99 // ----------------------------------------------------------------------------- |
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100 // CJ2kPacket::SetNumOfBlocks |
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101 // Set the number of blocks |
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102 // (other items were commented in a header). |
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103 // ----------------------------------------------------------------------------- |
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104 // |
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105 void CJ2kPacket::SetNumOfBlocks( TSize& aCodeBlock ) |
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106 { |
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107 TInt32 x0 = TJ2kUtils::Floor( iPacketCanvas.iTl.iX, aCodeBlock.iWidth ) * aCodeBlock.iWidth; |
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108 TInt32 y0 = TJ2kUtils::Floor( iPacketCanvas.iTl.iY, aCodeBlock.iHeight ) * aCodeBlock.iHeight; |
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109 TInt32 x1 = TJ2kUtils::Ceil( iPacketCanvas.iTl.iX + iPacketCanvas.Width(), aCodeBlock.iWidth ) * aCodeBlock.iWidth; |
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110 TInt32 y1 = TJ2kUtils::Ceil( iPacketCanvas.iTl.iY + iPacketCanvas.Height(), aCodeBlock.iHeight ) * aCodeBlock.iHeight; |
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111 iCodeBlockSize.iWidth = ( x1 - x0 ) / aCodeBlock.iWidth; |
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112 iCodeBlockSize.iHeight = ( y1 - y0 ) / aCodeBlock.iHeight; |
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113 } |
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114 |
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115 // ----------------------------------------------------------------------------- |
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116 // CJ2kPacket::BuildInclusiveInfoL |
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117 // Build the inclusive information of the packet |
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118 // (other items were commented in a header). |
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119 // ----------------------------------------------------------------------------- |
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120 // |
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121 void CJ2kPacket::BuildInclusiveInfoL() |
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122 { |
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123 TInt entries = ( iLayer % 8 ) ? ( ( iLayer / 8 ) + 1 ) : ( iLayer / 8 ); |
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124 iIncluded = HBufC8::NewMaxL( entries ); |
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125 iIncluded->Des().FillZ(); |
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126 } |
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127 |
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128 // ----------------------------------------------------------------------------- |
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129 // CJ2kPacket::BuildCodeBlocksL |
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130 // Build the codeblocks in the packet |
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131 // (other items were commented in a header). |
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132 // ----------------------------------------------------------------------------- |
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133 // |
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134 void CJ2kPacket::BuildCodeBlocksL( TInt32 aX, TInt32 aY, TSize& aCodeBlock ) |
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135 { |
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136 TUint16 numOfBlocks = NumOfBlocks(); |
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137 |
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138 if ( numOfBlocks ) |
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139 { |
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140 BuildTagtreeL(); |
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141 |
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142 TInt32 x0 = 0; |
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143 TInt32 y0 = 0; |
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144 TInt32 x1 = 0; |
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145 TInt32 y1 = 0; |
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146 TInt32 origX = aX; |
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147 TUint16 index = 0; |
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148 |
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149 while ( index < numOfBlocks ) |
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150 { |
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151 x0 = Max( aX, iPacketCanvas.iTl.iX ); |
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152 y0 = Max( aY, iPacketCanvas.iTl.iY ); |
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153 x1 = Min( aX + aCodeBlock.iWidth, iPacketCanvas.iTl.iX + iPacketCanvas.Width() ) - x0; |
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154 y1 = Min( aY + aCodeBlock.iHeight, iPacketCanvas.iTl.iY + iPacketCanvas.Height() ) - y0; |
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155 if ( x1 > 0 && y1 > 0 ) |
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156 { |
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157 CJ2kCodeBlock *block = new ( ELeave ) CJ2kCodeBlock; |
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158 CleanupStack::PushL( block ); |
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159 User::LeaveIfError( iCodeBlockList.Append( block ) ); |
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160 CleanupStack::Pop( 1 ); |
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161 iCodeBlockList[index]->SetCodeBlockCanvas( x0, y0, x1, y1 ); |
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162 |
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163 // Initialize the codeblock |
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164 iCodeBlockList[index]->InitializeL( iLayer ); |
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165 ++index; |
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166 } |
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167 |
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168 aX += aCodeBlock.iWidth; |
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169 if ( aX >= iPacketCanvas.iTl.iX + iPacketCanvas.Width() ) |
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170 { |
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171 aX = origX; |
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172 aY += aCodeBlock.iHeight; |
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173 } |
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174 } |
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175 } |
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176 } |
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177 |
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178 // ----------------------------------------------------------------------------- |
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179 // CJ2kPacket::ReadPacketHeaderL |
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180 // Read the packet header |
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181 // (other items were commented in a header). |
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182 // ----------------------------------------------------------------------------- |
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183 // |
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184 TUint8 CJ2kPacket::ReadPacketHeaderL( CJ2kTileInfo& aTile, CJ2kComponentInfo& aComponent, CJ2kSubband& aSubband ) |
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185 { |
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186 if ( IsIncludedL( aTile.LastLayerProcessed() ) ) |
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187 { |
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188 return EFalse; |
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189 } |
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190 |
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191 TUint8 incomplete = ETrue; |
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192 if ( LastCodeBlockProcessed() == 0 ) |
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193 { |
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194 if ( ReadSOP_EPHMarker( aComponent, aTile ) ) |
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195 { |
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196 return incomplete; |
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197 } |
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198 } |
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199 |
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200 TJ2kStreamReader& reader = CONST_CAST( TJ2kStreamReader&, aTile.StreamReader() ); |
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201 TUint8 *rollbackPtr = CONST_CAST( TUint8*, reader.iPtr ); |
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202 |
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203 if ( !StartReadBit( aTile ) ) |
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204 { |
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205 TUint8 bit = 0; |
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206 |
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207 if ( LastCodeBlockProcessed() == 0 ) |
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208 { |
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209 if ( !IsRecoverFromIncomplete() ) |
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210 { |
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211 ReadBit( bit, aTile ); |
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212 if ( bit == 0 ) |
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213 { |
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214 // Empty packet |
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215 incomplete = EFalse; |
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216 } |
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217 } |
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218 } |
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219 |
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220 if ( incomplete ) |
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221 { |
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222 // Packet header has not been processed yet |
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223 if ( !IsHeader() ) |
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224 { |
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225 TUint8 isBackup = IsBackupNeeded( aTile ); |
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226 |
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227 CJ2kSubband *subband = &aSubband; |
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228 if ( subband->SubbandResLevel() > 0 ) |
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229 { |
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230 if ( subband->LastSubbandProcessed() == CJ2kSubband::EBandLL ) |
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231 { |
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232 subband->SetLastSubbandProcessed( CJ2kSubband::EBandHL ); |
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233 } |
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234 else |
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235 { |
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236 // Move to last subband processed |
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237 while ( subband->SubbandType() != aSubband.LastSubbandProcessed() ) |
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238 { |
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239 subband = subband->NextSubbandRaster(); |
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240 } |
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241 } |
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242 } |
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243 |
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244 TUint16 bandIndex = 0; |
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245 TUint16 cbIndex = 0; |
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246 TUint16 cbYIndex = 0; |
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247 TUint16 xIndex = 0; |
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248 TUint16 yIndex = 0; |
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249 TUint16 incValue = 0; |
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250 TUint16 msbValue = 0; |
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251 TUint16 index = 0; |
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252 TUint16 layer = aTile.LastLayerProcessed(); |
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253 TUint16 numPass = 0; |
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254 TUint16 codePass = 0; |
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255 TUint16 numSegment = 0; |
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256 TUint8 recoverIncTag = 0; |
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257 TUint8 recoverMsbTag = 0; |
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258 TUint8 firstRecovery = ETrue; |
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259 TUint8 recoverData = 0; |
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260 TUint8 recoverPos = 0; |
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261 TUint8 recoverNextPos = 0; |
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262 TUint8 origPassIndex = 0; |
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263 TUint8 origLengthBits = 0; |
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264 TInt8 origLastPass = 0; |
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265 TUint32 origDataLength = 0; |
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266 |
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267 HBufC16 *recoverIncTagTreeValue = 0; |
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268 HBufC16 *recoverIncTagTreeState = 0; |
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269 HBufC16 *recoverMsbTagTreeValue = 0; |
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270 HBufC16 *recoverMsbTagTreeState = 0; |
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271 |
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272 if ( IsRecoverFromIncomplete() ) |
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273 { |
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274 recoverData = reader.iData; |
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275 recoverPos = reader.iPos; |
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276 recoverNextPos = reader.iNextPos; |
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277 } |
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278 |
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279 CJ2kPacket *packet = CONST_CAST( CJ2kPacket*, &subband->PacketAt( aSubband.LastPacketProcessed() ) ); |
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280 CJ2kCodeBlock *codeBlock; |
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281 incomplete = EFalse; |
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282 do |
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283 { |
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284 if ( aComponent.QuantizationStyle() != 1 ) |
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285 { |
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286 bandIndex = subband->SubbandTreeIndex(); |
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287 } |
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288 |
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289 for ( yIndex = 0; yIndex < packet->NumOfBlocksY(); ++yIndex ) |
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290 { |
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291 cbYIndex = (TUint16)( yIndex * packet->NumOfBlocksX() ); |
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292 for ( xIndex = 0; xIndex < packet->NumOfBlocksX(); ++xIndex ) |
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293 { |
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294 cbIndex = (TUint16)( cbYIndex + xIndex ); |
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295 if ( cbIndex < packet->LastCodeBlockProcessed() || |
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296 ( packet->IsMatch() && cbIndex == packet->LastCodeBlockProcessed() ) ) |
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297 { |
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298 // Has been processed, skip to the next codeblock |
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299 continue; //lint !e960 Using continue saves a lot of code here. |
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300 } |
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301 else |
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302 { |
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303 packet->ResetMatch(); |
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304 recoverIncTag = recoverMsbTag = EFalse; |
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305 codeBlock = CONST_CAST( CJ2kCodeBlock*, &packet->CodeBlockAt( cbIndex ) ); |
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306 |
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307 TPtr16 numSegPtr = codeBlock->iNumSegment->Des(); |
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308 |
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309 origPassIndex = codeBlock->iPassIndex; |
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310 origLastPass = codeBlock->iLastPass; |
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311 if ( codeBlock->iLastPass < 0 && codeBlock->iPassIndex == 0 ) |
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312 { |
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313 if ( isBackup ) |
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314 { |
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315 packet->BackupIncTagtreeL( recoverIncTagTreeValue, recoverIncTagTreeState ); |
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316 recoverIncTag = ETrue; |
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317 } |
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318 msbValue = (TUint16)0; |
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319 incomplete = packet->DecodeIncTagtree( aTile, xIndex, yIndex, incValue ); |
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320 if ( !incomplete ) |
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321 { |
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322 if ( incValue <= layer ) |
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323 { |
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324 if ( isBackup ) |
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325 { |
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326 packet->BackupMsbTagtreeL( recoverMsbTagTreeValue, recoverMsbTagTreeState ); |
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327 recoverMsbTag = ETrue; |
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328 } |
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329 incomplete = packet->DecodeMsbTagtree( aTile, xIndex, yIndex, msbValue ); |
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330 } |
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331 else |
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332 { |
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333 packet->SetLastCodeBlockProcessed( cbIndex ); |
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334 firstRecovery = EFalse; |
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335 recoverData = reader.iData; |
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336 recoverPos = reader.iPos; |
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337 recoverNextPos = reader.iNextPos; |
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338 recoverIncTag = recoverMsbTag = EFalse; |
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339 rollbackPtr = CONST_CAST( TUint8*, reader.iPtr ); |
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340 |
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341 // Move on to the next codeblock |
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342 continue; //lint !e960 Using continue saves a lot of code here. |
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343 } |
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344 } |
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345 |
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346 if ( incomplete ) |
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347 { |
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348 // Underflow, should backup the iterator position |
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349 if ( cbIndex > packet->LastCodeBlockProcessed() ) |
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350 { |
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351 // Next read should match the codeblock index |
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352 packet->SetMatch(); |
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353 } |
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354 |
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355 if ( !firstRecovery ) |
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356 { |
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357 SetRecoverFromIncomplete(); |
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358 reader.iData = recoverData; |
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359 reader.iPos = recoverPos; |
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360 reader.iNextPos = recoverNextPos; |
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361 } |
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362 else |
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363 { |
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364 if ( IsRecoverFromIncomplete() ) |
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365 { |
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366 reader.iData = recoverData; |
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367 reader.iPos = recoverPos; |
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368 reader.iNextPos = recoverNextPos; |
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369 } |
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370 } |
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371 |
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372 if ( isBackup ) |
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373 { |
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374 if ( recoverIncTag ) |
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375 { |
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376 packet->RestoreIncTagtree( recoverIncTagTreeValue, recoverIncTagTreeState ); |
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377 } |
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378 if ( recoverMsbTag ) |
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379 { |
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380 packet->RestoreMsbTagtree( recoverMsbTagTreeValue, recoverMsbTagTreeState ); |
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381 } |
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382 // Release memory |
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383 packet->FreeBackupTagtree( recoverIncTagTreeValue, recoverIncTagTreeState, |
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384 recoverMsbTagTreeValue, recoverMsbTagTreeState ); |
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385 } |
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386 reader.iPtr = rollbackPtr; |
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387 |
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388 // Return from the packet header decoding |
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389 return incomplete; |
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390 } |
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391 |
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392 codeBlock->iLastPass = 0; |
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393 numSegPtr[layer] = 1; |
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394 |
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395 codeBlock->iEmptyBitplane = (TUint8)msbValue; |
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396 |
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397 if ( aComponent.RoiShift() > 0 ) |
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398 { |
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399 numPass = (TUint16)( ( aComponent.MagnitudeBits( bandIndex ) + aComponent.RoiShift() ) * 3 + 1 ); |
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400 } |
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401 else |
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402 { |
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403 numPass = (TUint16)( ( aComponent.MagnitudeBits( bandIndex ) - msbValue ) * 3 + 1 ); |
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404 } |
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405 |
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406 if ( codeBlock->iDataSize == 0 || codeBlock->iDataSize->Length() < numPass ) |
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407 { |
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408 if ( codeBlock->iDataSize == 0 ) |
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409 { |
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410 codeBlock->iDataSize = HBufC16::NewMaxL( numPass ); |
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411 codeBlock->iDataSize->Des().FillZ(); |
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412 codeBlock->iPassesPerSegment = HBufC16::NewMaxL( numPass ); |
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413 codeBlock->iPassesPerSegment->Des().FillZ(); |
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414 } |
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415 else |
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416 { |
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417 incValue = ( TUint16 )( numPass - codeBlock->iDataSize->Length() ); |
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418 codeBlock->iDataSize = codeBlock->iDataSize->ReAllocL( numPass ); |
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419 codeBlock->iPassesPerSegment = codeBlock->iPassesPerSegment->ReAllocL( numPass ); |
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420 while ( incValue-- ) |
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421 { |
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422 codeBlock->iDataSize->Des().Append( 0 ); |
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423 codeBlock->iPassesPerSegment->Des().Append( 0 ); |
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424 } |
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425 } |
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426 } |
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427 } |
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428 else |
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429 { |
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430 incomplete = ReadBit( bit, aTile ); |
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431 if ( incomplete ) |
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432 { |
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433 // Underflow, should backup the iterator position |
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434 if ( cbIndex > packet->LastCodeBlockProcessed() ) |
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435 { |
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436 // Next read should match the codeblock index |
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437 packet->SetMatch(); |
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438 } |
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439 |
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440 if ( !firstRecovery ) |
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441 { |
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442 SetRecoverFromIncomplete(); |
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443 reader.iData = recoverData; |
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444 reader.iPos = recoverPos; |
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445 reader.iNextPos = recoverNextPos; |
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446 } |
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447 else |
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448 { |
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449 if ( IsRecoverFromIncomplete() ) |
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450 { |
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451 reader.iData = recoverData; |
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452 reader.iPos = recoverPos; |
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453 reader.iNextPos = recoverNextPos; |
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454 } |
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455 } |
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456 |
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457 if ( isBackup ) |
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458 { |
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459 // Release memory |
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460 packet->FreeBackupTagtree( recoverIncTagTreeValue, recoverIncTagTreeState, |
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461 recoverMsbTagTreeValue, recoverMsbTagTreeState ); |
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462 } |
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463 reader.iPtr = rollbackPtr; |
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464 |
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465 // Return from the packet header decoding |
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466 return incomplete; |
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467 } |
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468 |
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469 numSegPtr[layer] = bit; |
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470 |
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471 if ( bit == 0 ) |
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472 { |
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473 packet->SetLastCodeBlockProcessed( cbIndex ); |
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474 firstRecovery = EFalse; |
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475 recoverData = reader.iData; |
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476 recoverPos = reader.iPos; |
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477 recoverNextPos = reader.iNextPos; |
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478 recoverIncTag = recoverMsbTag = EFalse; |
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479 rollbackPtr = CONST_CAST( TUint8*, reader.iPtr ); |
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480 |
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481 // Move on to the next codeblock |
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482 continue; //lint !e960 Using continue saves a lot of code here. |
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483 } |
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484 } |
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485 |
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486 incomplete = ReadBit( bit, aTile ); |
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487 codePass = (TUint16)0; |
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488 if ( !incomplete ) |
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489 { |
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490 if ( bit ) // 1 |
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491 { |
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492 incomplete = ReadBit( bit, aTile ); |
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493 if ( !incomplete ) |
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494 { |
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495 if ( bit ) // 11 |
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496 { |
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497 incomplete = ReadBits( bit, 2, aTile ); |
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498 if ( !incomplete ) |
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499 { |
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500 if ( bit == 0x03 ) // 1111 |
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501 { |
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502 incomplete = ReadBits( bit, 5, aTile ); |
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503 if ( !incomplete ) |
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504 { |
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505 if ( bit == 0x1f ) // 1111 11111 |
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506 { |
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507 incomplete = ReadBits( bit, 7, aTile ); |
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508 if ( !incomplete ) |
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509 { |
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510 codePass = (TUint16)( 0x25 + bit ); |
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511 } |
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512 } |
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513 else |
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514 { |
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515 // 1111 XXXXX, at least one of them is not 1 |
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516 codePass = (TUint16)( 6 + bit ); |
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517 } |
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518 } |
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519 } |
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520 else |
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521 { |
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522 // 11XX |
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523 codePass = (TUint16)( 3 + bit ); |
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524 } |
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525 } |
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526 } |
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527 else |
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528 { |
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529 // 10 |
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530 codePass = 2; |
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531 } |
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532 } |
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533 } |
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534 else |
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535 { |
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536 // 0 |
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537 codePass = 1; |
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538 } |
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539 } |
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540 |
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541 if ( incomplete ) |
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542 { |
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543 // Underflow, restore the original codeblock information |
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544 codeBlock->iPassIndex = origPassIndex; |
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545 codeBlock->iLastPass = origLastPass; |
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546 |
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547 // Underflow, should backup the iterator position |
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548 if ( cbIndex > packet->LastCodeBlockProcessed() ) |
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549 { |
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550 // Next read should match the codeblock index |
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551 packet->SetMatch(); |
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552 } |
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553 |
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554 if ( !firstRecovery ) |
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555 { |
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556 SetRecoverFromIncomplete(); |
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557 reader.iData = recoverData; |
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558 reader.iPos = recoverPos; |
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559 reader.iNextPos = recoverNextPos; |
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560 } |
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561 else |
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562 { |
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563 if ( IsRecoverFromIncomplete() ) |
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564 { |
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565 reader.iData = recoverData; |
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566 reader.iPos = recoverPos; |
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567 reader.iNextPos = recoverNextPos; |
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568 } |
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569 } |
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570 |
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571 if ( isBackup ) |
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572 { |
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573 if ( recoverIncTag ) |
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574 { |
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575 packet->RestoreIncTagtree( recoverIncTagTreeValue, |
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576 recoverIncTagTreeState ); |
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577 } |
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578 if ( recoverMsbTag ) |
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579 { |
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580 packet->RestoreMsbTagtree( recoverMsbTagTreeValue, |
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581 recoverMsbTagTreeState ); |
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582 } |
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583 // Release memory |
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584 packet->FreeBackupTagtree( recoverIncTagTreeValue, recoverIncTagTreeState, |
|
585 recoverMsbTagTreeValue, recoverMsbTagTreeState ); |
|
586 } |
|
587 reader.iPtr = rollbackPtr; |
|
588 |
|
589 // Return from the packet header decoding |
|
590 return incomplete; |
|
591 } |
|
592 |
|
593 if ( codeBlock->iPassIndex == 0 ) |
|
594 { |
|
595 codeBlock->iLastPass = -1; |
|
596 } |
|
597 |
|
598 numSegment = 1; |
|
599 |
|
600 if ( aComponent.IsTermination() ) |
|
601 { |
|
602 numSegment = codePass; |
|
603 } |
|
604 else if ( aComponent.IsACByPass() ) |
|
605 { |
|
606 if ( ( codeBlock->iLastPass + codePass ) >= KFirstLazyPassIndex ) |
|
607 { |
|
608 for ( index = 1; index < codePass; ++index ) |
|
609 { |
|
610 if ( ( index + codeBlock->iLastPass ) >= KFirstLazyPassIndex ) |
|
611 { |
|
612 if ( ( ( index + codeBlock->iLastPass ) % 3 ) != 1 ) |
|
613 { |
|
614 ++numSegment; |
|
615 } |
|
616 } |
|
617 } |
|
618 } |
|
619 } |
|
620 |
|
621 numSegPtr[layer] = numSegment; //lint !e961 no else is needed here at the end of if...else if |
|
622 |
|
623 origLengthBits = codeBlock->iLengthBits; |
|
624 origDataLength = codeBlock->iDataLength; |
|
625 incomplete = ReadBit( bit, aTile ); |
|
626 if ( !incomplete ) |
|
627 { |
|
628 // Skip all 1 bits |
|
629 while ( bit ) |
|
630 { |
|
631 ++codeBlock->iLengthBits; |
|
632 incomplete = ReadBit( bit, aTile ); |
|
633 if ( incomplete ) |
|
634 { |
|
635 // Underflow |
|
636 // Set bit to zero to break from the while-loop |
|
637 bit = 0; |
|
638 } |
|
639 } |
|
640 } |
|
641 |
|
642 if ( !incomplete ) |
|
643 { |
|
644 TUint8 bits = 0; |
|
645 TUint32 tmpBits = 0; |
|
646 TPtr16 numPassesPerSegPtr = codeBlock->iPassesPerSegment->Des(); |
|
647 TPtr16 numDataSizePtr = codeBlock->iDataSize->Des(); |
|
648 |
|
649 if ( numSegment == 1 ) |
|
650 { |
|
651 bits = (TUint8)( codeBlock->iLengthBits + TJ2kUtils::Log2( codePass ) ); |
|
652 |
|
653 incomplete = ReadBits( tmpBits, bits, aTile ); |
|
654 if ( !incomplete ) |
|
655 { |
|
656 numPassesPerSegPtr[codeBlock->iPassIndex] = codePass; |
|
657 numDataSizePtr[codeBlock->iPassIndex++] = (TUint16)tmpBits; |
|
658 |
|
659 codeBlock->iDataLength += tmpBits; |
|
660 codeBlock->iLastPass = (TUint8)( codeBlock->iLastPass + codePass ); |
|
661 if ( tmpBits > 0 ) |
|
662 { |
|
663 SetBodyIncomplete(); |
|
664 } |
|
665 } |
|
666 } |
|
667 else |
|
668 { |
|
669 TUint16 totalCodePass = codePass; |
|
670 TUint16 tmpCodePass; |
|
671 for ( index = 0; index < numSegment; ++index ) |
|
672 { |
|
673 if ( aComponent.IsTermination() ) |
|
674 { |
|
675 tmpCodePass = 1; |
|
676 } |
|
677 else |
|
678 { |
|
679 if ( codeBlock->iLastPass < KFirstLazyPassIndex ) |
|
680 { |
|
681 tmpCodePass = (TUint16)( KFirstLazyPassIndex - ( TInt )codeBlock->iLastPass ); |
|
682 } |
|
683 else |
|
684 { |
|
685 tmpCodePass = (TUint16)( ( codeBlock->iLastPass % 3 ) ? 1 : ( ( totalCodePass > 1 ) ? 2 : 1 ) ); |
|
686 } |
|
687 } |
|
688 bits = (TUint8)( codeBlock->iLengthBits + TJ2kUtils::Log2( tmpCodePass ) ); |
|
689 incomplete = ReadBits( tmpBits, bits, aTile ); |
|
690 if ( !incomplete ) |
|
691 { |
|
692 numPassesPerSegPtr[codeBlock->iPassIndex] = tmpCodePass; |
|
693 numDataSizePtr[codeBlock->iPassIndex++] = (TUint16)tmpBits; |
|
694 |
|
695 codeBlock->iDataLength += tmpBits; |
|
696 codeBlock->iLastPass = (TUint8)( codeBlock->iLastPass + tmpCodePass ); |
|
697 totalCodePass = (TUint16)( totalCodePass - tmpCodePass ); |
|
698 if ( tmpBits > 0 ) |
|
699 { |
|
700 SetBodyIncomplete(); |
|
701 } |
|
702 } |
|
703 else |
|
704 { |
|
705 index = numSegment; // break from the for-loop |
|
706 } |
|
707 } |
|
708 } |
|
709 } |
|
710 |
|
711 if ( incomplete ) |
|
712 { |
|
713 // Underflow, restore the original codeblock information |
|
714 codeBlock->iPassIndex = origPassIndex; |
|
715 codeBlock->iLastPass = origLastPass; |
|
716 codeBlock->iLengthBits = origLengthBits; |
|
717 codeBlock->iDataLength = origDataLength; |
|
718 |
|
719 // Underflow, should backup the iterator position |
|
720 if ( cbIndex > packet->LastCodeBlockProcessed() ) |
|
721 { |
|
722 // Next read should match the codeblock index |
|
723 packet->SetMatch(); |
|
724 } |
|
725 |
|
726 if ( !firstRecovery ) |
|
727 { |
|
728 SetRecoverFromIncomplete(); |
|
729 reader.iData = recoverData; |
|
730 reader.iPos = recoverPos; |
|
731 reader.iNextPos = recoverNextPos; |
|
732 } |
|
733 else |
|
734 { |
|
735 if ( IsRecoverFromIncomplete() ) |
|
736 { |
|
737 reader.iData = recoverData; |
|
738 reader.iPos = recoverPos; |
|
739 reader.iNextPos = recoverNextPos; |
|
740 } |
|
741 } |
|
742 |
|
743 if ( isBackup ) |
|
744 { |
|
745 if ( recoverIncTag ) |
|
746 { |
|
747 packet->RestoreIncTagtree( recoverIncTagTreeValue, |
|
748 recoverIncTagTreeState ); |
|
749 } |
|
750 if ( recoverMsbTag ) |
|
751 { |
|
752 packet->RestoreMsbTagtree( recoverMsbTagTreeValue, |
|
753 recoverMsbTagTreeState ); |
|
754 } |
|
755 |
|
756 // Release memory |
|
757 packet->FreeBackupTagtree( recoverIncTagTreeValue, |
|
758 recoverIncTagTreeState, |
|
759 recoverMsbTagTreeValue, |
|
760 recoverMsbTagTreeState ); |
|
761 } |
|
762 reader.iPtr = rollbackPtr; |
|
763 |
|
764 // Return from the packet header decoding |
|
765 return incomplete; |
|
766 } |
|
767 |
|
768 } |
|
769 |
|
770 packet->SetLastCodeBlockProcessed( cbIndex ); |
|
771 firstRecovery = EFalse; |
|
772 recoverData = reader.iData; |
|
773 recoverPos = reader.iPos; |
|
774 recoverNextPos = reader.iNextPos; |
|
775 recoverIncTag = recoverMsbTag = EFalse; |
|
776 rollbackPtr = CONST_CAST( TUint8*, reader.iPtr ); |
|
777 } // end of xIndex |
|
778 } // end of yIndex |
|
779 |
|
780 packet->SetLastCodeBlockProcessed( 0 ); |
|
781 packet->ResetMatch(); |
|
782 ResetRecoverFromIncomplete(); |
|
783 subband = subband->NextSubbandRaster(); |
|
784 if ( subband ) |
|
785 { |
|
786 if ( isBackup ) |
|
787 { |
|
788 // Sibling may have different tag tree level, so release memory here |
|
789 packet->FreeBackupTagtree( recoverIncTagTreeValue, recoverIncTagTreeState, |
|
790 recoverMsbTagTreeValue, recoverMsbTagTreeState ); |
|
791 } |
|
792 packet = CONST_CAST( CJ2kPacket*, &subband->PacketAt( aSubband.LastPacketProcessed() ) ); |
|
793 aSubband.SetLastSubbandProcessed( (TUint8)subband->SubbandType() ); |
|
794 } |
|
795 |
|
796 } while ( subband ); |
|
797 |
|
798 if ( !incomplete ) |
|
799 { |
|
800 // Packet header has been completely processed |
|
801 SetHeader(); |
|
802 SetIncluded( aTile.LastLayerProcessed() ); |
|
803 AlignReader( aTile ); |
|
804 aSubband.SetLastSubbandProcessed( CJ2kSubband::EBandLL ); |
|
805 } |
|
806 if ( isBackup ) |
|
807 { |
|
808 // Release memory |
|
809 packet->FreeBackupTagtree( recoverIncTagTreeValue, recoverIncTagTreeState, |
|
810 recoverMsbTagTreeValue, recoverMsbTagTreeState ); |
|
811 } |
|
812 } |
|
813 else |
|
814 { |
|
815 // Packet has been processed |
|
816 reader.iPtr = rollbackPtr; |
|
817 } |
|
818 } |
|
819 |
|
820 if ( !incomplete ) |
|
821 { |
|
822 if ( aComponent.IsEPHMarkerUsed() ) |
|
823 { |
|
824 ReadEPHMarker( aTile ); |
|
825 } |
|
826 } |
|
827 } |
|
828 return incomplete; |
|
829 } |
|
830 |
|
831 // ----------------------------------------------------------------------------- |
|
832 // CJ2kPacket::ReadPacketBodyL |
|
833 // Read the packet body |
|
834 // (other items were commented in a header). |
|
835 // ----------------------------------------------------------------------------- |
|
836 // |
|
837 TUint8 CJ2kPacket::ReadPacketBodyL( CJ2kTileInfo& aTile, CJ2kComponentInfo& aComponent, CJ2kSubband& aSubband ) |
|
838 { |
|
839 TUint8 incomplete = EFalse; |
|
840 if ( LastCodeBlockProcessed() == 0 ) |
|
841 { |
|
842 if ( ReadSOP_EPHMarker( aComponent, aTile, EFalse ) ) |
|
843 { |
|
844 return ETrue; |
|
845 } |
|
846 } |
|
847 |
|
848 TJ2kStreamReader& reader = CONST_CAST( TJ2kStreamReader&, aTile.StreamReader() ); |
|
849 |
|
850 // Packet body has not been processed yet |
|
851 if ( !IsBody() ) |
|
852 { |
|
853 SetBodyIncomplete(); |
|
854 |
|
855 CJ2kSubband *subband = &aSubband; |
|
856 if ( subband->SubbandResLevel() > 0 ) |
|
857 { |
|
858 if ( subband->LastSubbandProcessed() == CJ2kSubband::EBandLL ) |
|
859 { |
|
860 subband->SetLastSubbandProcessed( CJ2kSubband::EBandHL ); |
|
861 } |
|
862 else |
|
863 { |
|
864 // Move to last subband processed |
|
865 while ( subband->SubbandType() != aSubband.LastSubbandProcessed() ) |
|
866 { |
|
867 subband = subband->NextSubbandRaster(); |
|
868 } |
|
869 } |
|
870 } |
|
871 TUint16 xIndex = 0; |
|
872 TUint16 yIndex = 0; |
|
873 TUint16 cbIndex = 0; |
|
874 TUint16 cbYIndex = 0; |
|
875 TUint16 index = 0; |
|
876 TUint16 cblkLength = 0; |
|
877 TUint16 layer = aTile.LastLayerProcessed(); |
|
878 TInt32 totalLength = 0; |
|
879 TUint8 *rollbackPtr = CONST_CAST( TUint8*, reader.iPtr ); |
|
880 |
|
881 CJ2kPacket *packet = CONST_CAST( CJ2kPacket*, &subband->PacketAt( aSubband.LastPacketProcessed() ) ); |
|
882 CJ2kCodeBlock *codeBlock = 0; |
|
883 do |
|
884 { |
|
885 |
|
886 for ( yIndex = 0; yIndex < packet->NumOfBlocksY(); ++yIndex ) |
|
887 { |
|
888 cbYIndex = (TUint16)( yIndex * packet->NumOfBlocksX() ); |
|
889 for ( xIndex = 0; xIndex < packet->NumOfBlocksX(); ++xIndex ) |
|
890 { |
|
891 cbIndex = (TUint16)( cbYIndex + xIndex ); |
|
892 if ( cbIndex < packet->LastCodeBlockProcessed() || |
|
893 ( packet->IsMatch() && cbIndex == packet->LastCodeBlockProcessed() ) ) |
|
894 { |
|
895 // Has been processed, skip to the next codeblock |
|
896 continue; //lint !e960 Using continue saves a lot of code here. |
|
897 } |
|
898 else |
|
899 { |
|
900 packet->ResetMatch(); |
|
901 codeBlock = CONST_CAST( CJ2kCodeBlock*, &packet->CodeBlockAt( cbIndex ) ); |
|
902 |
|
903 if ( ( *codeBlock->iNumSegment )[layer] > 0 ) |
|
904 { |
|
905 TUint tempLength = 0; |
|
906 TUint8 skip = 0; |
|
907 |
|
908 if ( !aTile.IsSpeedup() ) |
|
909 { |
|
910 // If this resolution level is not required in decoding, skip storing the data to save memory |
|
911 if ( aTile.LastLevelProcessed() > (TUint8)( aTile.NumOfLevelsPOC() - aTile.ImageInfo().LevelDrop() ) ) |
|
912 skip = 1; |
|
913 } |
|
914 |
|
915 tempLength = codeBlock->iDataLength; |
|
916 |
|
917 if ( tempLength ) |
|
918 { |
|
919 // Find out which segment has been processed |
|
920 totalLength = codeBlock->iDataLength - tempLength; |
|
921 { |
|
922 for ( index = 1; index <= ( *codeBlock->iNumSegment )[layer]; ++index ) |
|
923 { |
|
924 totalLength -= ( *codeBlock->iDataSize )[codeBlock->iPassIndex - index]; |
|
925 if ( totalLength <= 0 ) |
|
926 { |
|
927 break; //lint !e960 break usage saves code here. |
|
928 } |
|
929 } |
|
930 } |
|
931 } |
|
932 else |
|
933 { |
|
934 index = ( *codeBlock->iNumSegment )[layer]; |
|
935 } |
|
936 |
|
937 for ( ; index > 0; --index ) |
|
938 { |
|
939 cblkLength = ( *codeBlock->iDataSize )[codeBlock->iPassIndex - index]; |
|
940 if ( ( reader.iPtrEnd - reader.iPtr ) < cblkLength ) |
|
941 { |
|
942 // Underflow, rollback the iterator position |
|
943 reader.iPtr = rollbackPtr; |
|
944 incomplete = ETrue; |
|
945 if ( cbIndex > packet->LastCodeBlockProcessed() ) |
|
946 { |
|
947 // Next read should match the codeblock index |
|
948 packet->SetMatch(); |
|
949 } |
|
950 |
|
951 return incomplete; |
|
952 } |
|
953 else |
|
954 { |
|
955 |
|
956 // Store data only if the resolution level is not skipped |
|
957 if( !skip ) |
|
958 { |
|
959 TPtr8 data = codeBlock->DataL()->Des(); |
|
960 data.Append( reader.iPtr, cblkLength ); |
|
961 } |
|
962 |
|
963 reader.iPtr += cblkLength; |
|
964 } |
|
965 // Save the iterator position |
|
966 rollbackPtr = CONST_CAST( TUint8*, reader.iPtr ); |
|
967 } |
|
968 } |
|
969 } |
|
970 packet->SetLastCodeBlockProcessed( cbIndex ); |
|
971 |
|
972 // Save the iterator position |
|
973 rollbackPtr = CONST_CAST( TUint8*, reader.iPtr ); |
|
974 } // end of xIndex |
|
975 } // end of yIndex |
|
976 |
|
977 packet->SetLastCodeBlockProcessed( 0 ); |
|
978 packet->ResetMatch(); |
|
979 subband = subband->NextSubbandRaster(); |
|
980 if ( subband ) |
|
981 { |
|
982 packet = CONST_CAST( CJ2kPacket*, &subband->PacketAt( aSubband.LastPacketProcessed() ) ); |
|
983 aSubband.SetLastSubbandProcessed( (TUint8)subband->SubbandType() ); |
|
984 } |
|
985 |
|
986 } while ( subband ); |
|
987 |
|
988 SetBody(); |
|
989 ResetBodyIncomplete(); |
|
990 aSubband.SetLastSubbandProcessed( CJ2kSubband::EBandLL ); |
|
991 } |
|
992 |
|
993 return incomplete; |
|
994 } |
|
995 |
|
996 // ----------------------------------------------------------------------------- |
|
997 // CJ2kPacket::ResetInternalFlags |
|
998 // Reset the internal flags |
|
999 // (other items were commented in a header). |
|
1000 // ----------------------------------------------------------------------------- |
|
1001 // |
|
1002 void CJ2kPacket::ResetInternalFlags() |
|
1003 { |
|
1004 ResetHeader(); |
|
1005 ResetBody(); |
|
1006 } |
|
1007 |
|
1008 // ----------------------------------------------------------------------------- |
|
1009 // CJ2kPacket::BuildTagtreeL |
|
1010 // Build the tag tree |
|
1011 // (other items were commented in a header). |
|
1012 // ----------------------------------------------------------------------------- |
|
1013 // |
|
1014 void CJ2kPacket::BuildTagtreeL() |
|
1015 { |
|
1016 TUint32 width = iCodeBlockSize.iWidth; |
|
1017 TUint32 height = iCodeBlockSize.iHeight; |
|
1018 |
|
1019 while ( width != 1 || height != 1 ) |
|
1020 { |
|
1021 width = ( width + 1 ) >> 1; |
|
1022 height = ( height + 1 ) >> 1; |
|
1023 ++iTagTreeLevel; |
|
1024 } |
|
1025 |
|
1026 TInt size = 0; |
|
1027 TInt sizeIndex = 0; |
|
1028 width = iCodeBlockSize.iWidth; |
|
1029 height = iCodeBlockSize.iHeight; |
|
1030 |
|
1031 iTagTreeInfo = HBufC16::NewMaxL( iTagTreeLevel + 1 ); |
|
1032 TPtr16 tmpPtr = ( iTagTreeInfo->Des() ); |
|
1033 tmpPtr[0] = (TUint16)sizeIndex; |
|
1034 |
|
1035 for ( TUint8 index = 0; index < iTagTreeLevel; ++index ) |
|
1036 { |
|
1037 size = width * height; |
|
1038 sizeIndex += size; |
|
1039 tmpPtr[index + 1] = (TUint16)sizeIndex; |
|
1040 } |
|
1041 |
|
1042 TChar fillChar( 0xffff ); |
|
1043 |
|
1044 iIncTagTreeValue = HBufC16::NewMaxL( sizeIndex ); |
|
1045 iIncTagTreeValue->Des().Fill( fillChar, iIncTagTreeValue->Length() ); |
|
1046 iIncTagTreeState = HBufC16::NewMaxL( sizeIndex ); |
|
1047 iIncTagTreeState->Des().FillZ(); |
|
1048 |
|
1049 iMsbTagTreeValue = HBufC16::NewMaxL( sizeIndex ); |
|
1050 iMsbTagTreeValue->Des().Fill( fillChar, iIncTagTreeValue->Length() ); |
|
1051 iMsbTagTreeState = HBufC16::NewMaxL( sizeIndex ); |
|
1052 iMsbTagTreeState->Des().FillZ(); |
|
1053 } |
|
1054 |
|
1055 // ----------------------------------------------------------------------------- |
|
1056 // CJ2kPacket::DecodeIncTagtree |
|
1057 // Decode the included tag tree |
|
1058 // (other items were commented in a header). |
|
1059 // ----------------------------------------------------------------------------- |
|
1060 // |
|
1061 TUint8 CJ2kPacket::DecodeIncTagtree( CJ2kTileInfo& aTile, TUint32 aWidth, TUint32 aHeight, TUint16& aValue ) |
|
1062 { |
|
1063 TUint8 bit = 2; |
|
1064 TInt16 parentState = 0; |
|
1065 TUint8 contCoding = 1; |
|
1066 TUint16 idx = 0; |
|
1067 TUint16 layer = (TUint16)( aTile.LastLayerProcessed() + 1 ); |
|
1068 |
|
1069 for ( TInt16 index = TInt16( iTagTreeLevel - 1 ); index >= 0; --index ) |
|
1070 { |
|
1071 idx = (TUint16)( ( aHeight >> index ) * ( (TUint32)( iCodeBlockSize.iWidth + ( 1 << index ) - 1 ) >> index ) + ( aWidth >> index ) ); |
|
1072 if ( ( IncTagState( index, idx ) < parentState ) && IncTagValue( index, idx ) == 0xffff ) |
|
1073 { |
|
1074 SetIncTagState( index, idx, (TUint16)( parentState - contCoding ) ); |
|
1075 } |
|
1076 |
|
1077 while ( contCoding && IncTagState( index, idx ) < layer && IncTagValue( index, idx ) == 0xffff ) |
|
1078 { |
|
1079 if ( ReadBit( bit, aTile ) ) |
|
1080 { |
|
1081 return ETrue; |
|
1082 } |
|
1083 |
|
1084 if ( bit == 1 ) |
|
1085 { |
|
1086 SetIncTagValue( index, idx, IncTagState( index, idx ) ); |
|
1087 } |
|
1088 IncrementIncTagState( index, idx ); |
|
1089 } |
|
1090 parentState = IncTagState( index, idx ); |
|
1091 if ( bit == 0 || IncTagValue( index, idx ) == 0xffff ) |
|
1092 { |
|
1093 contCoding = 0; |
|
1094 } |
|
1095 } |
|
1096 aValue = IncTagValue( 0, idx ); |
|
1097 return EFalse; |
|
1098 } |
|
1099 |
|
1100 // ----------------------------------------------------------------------------- |
|
1101 // CJ2kPacket::DecodeMsbTagtree |
|
1102 // Decode the msb tag tree |
|
1103 // (other items were commented in a header). |
|
1104 // ----------------------------------------------------------------------------- |
|
1105 // |
|
1106 TUint8 CJ2kPacket::DecodeMsbTagtree( CJ2kTileInfo& aTile, TUint32 aWidth, TUint32 aHeight, TUint16& aValue ) |
|
1107 { |
|
1108 TUint8 bit = 2; |
|
1109 TInt16 parentState = 0; |
|
1110 TUint8 contCoding = 1; |
|
1111 TUint16 idx = 0; |
|
1112 TUint16 layer = 0xffff; |
|
1113 |
|
1114 for ( TInt16 index = (TUint16)( iTagTreeLevel - 1 ); index >= 0; --index ) |
|
1115 { |
|
1116 idx = (TUint16)( ( aHeight >> index ) * ( (TUint32)( iCodeBlockSize.iWidth + ( 1 << index ) - 1 ) >> index ) + ( aWidth >> index ) ); |
|
1117 |
|
1118 if ( ( MsbTagState( index, idx ) < parentState ) && MsbTagValue( index, idx ) == 0xffff ) |
|
1119 { |
|
1120 SetMsbTagState( index, idx, (TUint16)( ( parentState - contCoding ) ) ); |
|
1121 } |
|
1122 |
|
1123 while ( contCoding && MsbTagState( index, idx ) < layer && MsbTagValue( index, idx ) == 0xffff ) |
|
1124 { |
|
1125 if ( ReadBit( bit, aTile ) ) |
|
1126 { |
|
1127 return ETrue; |
|
1128 } |
|
1129 |
|
1130 if ( bit == 1 ) |
|
1131 { |
|
1132 SetMsbTagValue( index, idx, MsbTagState( index, idx ) ); |
|
1133 } |
|
1134 IncrementMsbTagState( index, idx ); |
|
1135 } |
|
1136 parentState = MsbTagState( index, idx ); |
|
1137 if ( bit == 0 || MsbTagValue( index, idx ) == 0xffff ) |
|
1138 { |
|
1139 contCoding = 0; |
|
1140 } |
|
1141 } |
|
1142 aValue = MsbTagValue( 0, idx ); |
|
1143 return EFalse; |
|
1144 } |
|
1145 |
|
1146 // ----------------------------------------------------------------------------- |
|
1147 // CJ2kPacket::BackupIncTagtreeL |
|
1148 // Backup the included tag tree |
|
1149 // (other items were commented in a header). |
|
1150 // ----------------------------------------------------------------------------- |
|
1151 // |
|
1152 void CJ2kPacket::BackupIncTagtreeL( HBufC16*& aTagValue, HBufC16*& aTagState ) |
|
1153 { |
|
1154 if ( aTagValue && aTagState ) |
|
1155 { |
|
1156 if ( aTagValue->Des().MaxLength() < iIncTagTreeValue->Length() ) |
|
1157 { |
|
1158 aTagValue = aTagValue->ReAllocL( iIncTagTreeValue->Length() ); |
|
1159 } |
|
1160 if ( aTagState->Des().MaxLength() < iIncTagTreeState->Length() ) |
|
1161 { |
|
1162 aTagState = aTagState->ReAllocL( iIncTagTreeState->Length() ); |
|
1163 } |
|
1164 } |
|
1165 else |
|
1166 { |
|
1167 aTagValue = HBufC16::NewMaxLC( iIncTagTreeValue->Length() ); |
|
1168 aTagState = HBufC16::NewMaxLC( iIncTagTreeState->Length() ); |
|
1169 } |
|
1170 *aTagValue = *iIncTagTreeValue; |
|
1171 *aTagState = *iIncTagTreeState; |
|
1172 } |
|
1173 |
|
1174 // ----------------------------------------------------------------------------- |
|
1175 // CJ2kPacket::BackupMsbTagtreeL |
|
1176 // Backup the msb tag tree |
|
1177 // (other items were commented in a header). |
|
1178 // ----------------------------------------------------------------------------- |
|
1179 // |
|
1180 void CJ2kPacket::BackupMsbTagtreeL( HBufC16*& aTagValue, HBufC16*& aTagState ) |
|
1181 { |
|
1182 if ( aTagValue && aTagState ) |
|
1183 { |
|
1184 if ( aTagValue->Des().MaxLength() < iMsbTagTreeValue->Length() ) |
|
1185 { |
|
1186 aTagValue = aTagValue->ReAllocL( iMsbTagTreeValue->Length() ); |
|
1187 } |
|
1188 if ( aTagState->Des().MaxLength() < iMsbTagTreeState->Length() ) |
|
1189 { |
|
1190 aTagState = aTagState->ReAllocL( iMsbTagTreeState->Length() ); |
|
1191 } |
|
1192 } |
|
1193 else |
|
1194 { |
|
1195 aTagValue = HBufC16::NewMaxLC( iMsbTagTreeValue->Length() ); |
|
1196 aTagState = HBufC16::NewMaxLC( iMsbTagTreeState->Length() ); |
|
1197 } |
|
1198 *aTagValue = *iMsbTagTreeValue; |
|
1199 *aTagState = *iMsbTagTreeState; |
|
1200 } |
|
1201 |
|
1202 // ----------------------------------------------------------------------------- |
|
1203 // CJ2kPacket::RestoreIncTagtree |
|
1204 // Restore the included tag tree |
|
1205 // (other items were commented in a header). |
|
1206 // ----------------------------------------------------------------------------- |
|
1207 // |
|
1208 void CJ2kPacket::RestoreIncTagtree( HBufC16 *aTagValue, HBufC16 *aTagState ) |
|
1209 { |
|
1210 *iIncTagTreeValue = *aTagValue; |
|
1211 *iIncTagTreeState = *aTagState; |
|
1212 } |
|
1213 |
|
1214 // ----------------------------------------------------------------------------- |
|
1215 // CJ2kPacket::RestoreMsbTagtree |
|
1216 // Restore the msb tag tree |
|
1217 // (other items were commented in a header). |
|
1218 // ----------------------------------------------------------------------------- |
|
1219 // |
|
1220 void CJ2kPacket::RestoreMsbTagtree( HBufC16 *aTagValue, HBufC16 *aTagState ) |
|
1221 { |
|
1222 *iMsbTagTreeValue = *aTagValue; |
|
1223 *iMsbTagTreeState = *aTagState; |
|
1224 } |
|
1225 |
|
1226 // ----------------------------------------------------------------------------- |
|
1227 // CJ2kPacket::FreeBackupTagtree |
|
1228 // Release the temporary backup memory |
|
1229 // (other items were commented in a header). |
|
1230 // ----------------------------------------------------------------------------- |
|
1231 // |
|
1232 void CJ2kPacket::FreeBackupTagtree( HBufC16*& aIncTagValue, HBufC16*& aIncTagState, |
|
1233 HBufC16*& aMsbTagValue, HBufC16*& aMsbTagState ) |
|
1234 { |
|
1235 TInt count = 0; |
|
1236 if ( aIncTagValue ) |
|
1237 { |
|
1238 delete aIncTagValue; |
|
1239 aIncTagValue = 0; |
|
1240 ++count; |
|
1241 } |
|
1242 if ( aIncTagState ) |
|
1243 { |
|
1244 delete aIncTagState; |
|
1245 aIncTagState = 0; |
|
1246 ++count; |
|
1247 } |
|
1248 if ( aMsbTagValue ) |
|
1249 { |
|
1250 delete aMsbTagValue; |
|
1251 aMsbTagValue = 0; |
|
1252 ++count; |
|
1253 } |
|
1254 if ( aMsbTagState ) |
|
1255 { |
|
1256 delete aMsbTagState; |
|
1257 aMsbTagState = 0; |
|
1258 ++count; |
|
1259 } |
|
1260 CleanupStack::Pop( count ); |
|
1261 } |
|
1262 |
|
1263 // ----------------------------------------------------------------------------- |
|
1264 // CJ2kPacket::IsIncludedL |
|
1265 // Is the layer has been included in previous packet |
|
1266 // (other items were commented in a header). |
|
1267 // ----------------------------------------------------------------------------- |
|
1268 // |
|
1269 TUint8 CJ2kPacket::IsIncludedL( TUint16 aLayer ) |
|
1270 { |
|
1271 TInt entries = ( iLayer % 8 ) ? ( ( iLayer / 8 ) + 1 ) : ( iLayer / 8 ); |
|
1272 if ( iIncluded == 0 || iIncluded->Des().MaxLength() < entries ) |
|
1273 { |
|
1274 if ( iIncluded ) |
|
1275 { |
|
1276 TInt diff = entries - iIncluded->Length(); |
|
1277 iIncluded = iIncluded->ReAllocL( entries ); |
|
1278 while ( diff-- ) |
|
1279 { |
|
1280 iIncluded->Des().Append( (TUint8)0 ); |
|
1281 } |
|
1282 } |
|
1283 else |
|
1284 { |
|
1285 iIncluded = HBufC8::NewMaxL( entries ); |
|
1286 iIncluded->Des().FillZ(); |
|
1287 } |
|
1288 } |
|
1289 return IncludedAt( aLayer ); |
|
1290 } |
|
1291 |
|
1292 // ----------------------------------------------------------------------------- |
|
1293 // CJ2kPacket::IncludedAt |
|
1294 // Get the inclusive information at specific layer |
|
1295 // (other items were commented in a header). |
|
1296 // ----------------------------------------------------------------------------- |
|
1297 // |
|
1298 TUint8 CJ2kPacket::IncludedAt( TUint16 aLayer ) const |
|
1299 { |
|
1300 TInt entry = aLayer / 8; |
|
1301 TInt bit = aLayer % 8; |
|
1302 return (TUint8)( ( iIncluded->Des() )[entry] & ( 0x01 << bit ) ); |
|
1303 } |
|
1304 |
|
1305 // ----------------------------------------------------------------------------- |
|
1306 // CJ2kPacket::SetIncluded |
|
1307 // Set the inclusive information at specific layer |
|
1308 // (other items were commented in a header). |
|
1309 // ----------------------------------------------------------------------------- |
|
1310 // |
|
1311 void CJ2kPacket::SetIncluded( TUint16 aLayer ) |
|
1312 { |
|
1313 TInt entry = aLayer / 8; |
|
1314 TInt bit = aLayer % 8; |
|
1315 TPtr8 tmpPtr = iIncluded->Des(); |
|
1316 tmpPtr[entry] |= ( 0x01 << bit ); |
|
1317 } |
|
1318 |
|
1319 // ----------------------------------------------------------------------------- |
|
1320 // CJ2kPacket::IsBackupNeeded |
|
1321 // Is tag tree backup is required for underflow recovery |
|
1322 // (other items were commented in a header). |
|
1323 // ----------------------------------------------------------------------------- |
|
1324 // |
|
1325 TUint8 CJ2kPacket::IsBackupNeeded( CJ2kTileInfo& aTile ) |
|
1326 { |
|
1327 return !( aTile.IsPPT() || aTile.ImageInfo().IsPPM() ); |
|
1328 } |
|
1329 |
|
1330 // ----------------------------------------------------------------------------- |
|
1331 // CJ2kPacket::StartReadBit |
|
1332 // Read a bit from the packet header stream |
|
1333 // (other items were commented in a header). |
|
1334 // ----------------------------------------------------------------------------- |
|
1335 // |
|
1336 TUint8 CJ2kPacket::StartReadBit( CJ2kTileInfo& aTile ) |
|
1337 { |
|
1338 return ( !IsRecoverFromIncomplete() ) ? |
|
1339 aTile.PacketHeaderReader().StartReadBit() : |
|
1340 (TUint8)EFalse; |
|
1341 } |
|
1342 |
|
1343 // ----------------------------------------------------------------------------- |
|
1344 // CJ2kPacket::ReadBit |
|
1345 // Read a bit from the packet header stream |
|
1346 // (other items were commented in a header). |
|
1347 // ----------------------------------------------------------------------------- |
|
1348 // |
|
1349 TUint8 CJ2kPacket::ReadBit( TUint8& aBit, CJ2kTileInfo& aTile ) |
|
1350 { |
|
1351 return aTile.PacketHeaderReader().ReadBit( aBit ); |
|
1352 } |
|
1353 |
|
1354 // ----------------------------------------------------------------------------- |
|
1355 // CJ2kPacket::ReadBits |
|
1356 // Read some bits from the packet header stream |
|
1357 // (other items were commented in a header). |
|
1358 // ----------------------------------------------------------------------------- |
|
1359 // |
|
1360 TUint8 CJ2kPacket::ReadBits( TUint8& aBit, TUint8 aBitLen, CJ2kTileInfo& aTile ) |
|
1361 { |
|
1362 return aTile.PacketHeaderReader().ReadBits( aBit, aBitLen ); |
|
1363 } |
|
1364 |
|
1365 // ----------------------------------------------------------------------------- |
|
1366 // CJ2kPacket::ReadBits |
|
1367 // Read some bits from the packet header stream |
|
1368 // (other items were commented in a header). |
|
1369 // ----------------------------------------------------------------------------- |
|
1370 // |
|
1371 TUint8 CJ2kPacket::ReadBits( TUint32& aBit, TUint8 aBitLen, CJ2kTileInfo& aTile ) |
|
1372 { |
|
1373 return aTile.PacketHeaderReader().ReadBits( aBit, aBitLen ); |
|
1374 } |
|
1375 |
|
1376 // ----------------------------------------------------------------------------- |
|
1377 // CJ2kPacket::AlignReader |
|
1378 // Align the stream to the next byte boundary if necessary |
|
1379 // (other items were commented in a header). |
|
1380 // ----------------------------------------------------------------------------- |
|
1381 // |
|
1382 void CJ2kPacket::AlignReader( CJ2kTileInfo& aTile ) |
|
1383 { |
|
1384 aTile.PacketHeaderReader().AlignReader(); |
|
1385 } |
|
1386 |
|
1387 // ----------------------------------------------------------------------------- |
|
1388 // CJ2kPacket::ReadSOPMarker |
|
1389 // Try to consume the SOP marker if there is one |
|
1390 // (other items were commented in a header). |
|
1391 // ----------------------------------------------------------------------------- |
|
1392 // |
|
1393 TUint8 CJ2kPacket::ReadSOPMarker( CJ2kTileInfo& aTile ) |
|
1394 { |
|
1395 // SOP may be inside the CodeStream only |
|
1396 return CONST_CAST( TJ2kStreamReader&, aTile.StreamReader() ).ReadSOPMarker(); |
|
1397 } |
|
1398 |
|
1399 // ----------------------------------------------------------------------------- |
|
1400 // CJ2kPacket::ReadEPHMarker |
|
1401 // Try to consume the EPH marker if there is one |
|
1402 // (other items were commented in a header). |
|
1403 // ----------------------------------------------------------------------------- |
|
1404 // |
|
1405 TUint8 CJ2kPacket::ReadEPHMarker( CJ2kTileInfo& aTile ) |
|
1406 { |
|
1407 // EPH may be inside PPT or PPM or CodeStream |
|
1408 return aTile.PacketHeaderReader().ReadEPHMarker(); |
|
1409 } |
|
1410 |
|
1411 // ----------------------------------------------------------------------------- |
|
1412 // CJ2kPacket::ReadSOP_EPHMarker |
|
1413 // Try to re-align stream to next byte boundary if necessary, |
|
1414 // (other items were commented in a header). |
|
1415 // ----------------------------------------------------------------------------- |
|
1416 // |
|
1417 TUint8 CJ2kPacket::ReadSOP_EPHMarker( CJ2kComponentInfo& aComponent, CJ2kTileInfo& aTile, TBool aSOP ) |
|
1418 { |
|
1419 TJ2kStreamReader& reader = CONST_CAST( TJ2kStreamReader&, aTile.StreamReader() ); |
|
1420 |
|
1421 TUint8 incomplete = reader.TryReAlignReader(); |
|
1422 incomplete = reader.TryReadEPHMarker(); |
|
1423 |
|
1424 if ( !incomplete && aSOP && aComponent.IsSOPMarkerUsed() && ( !IsHeader() || !IsBody() ) ) |
|
1425 { |
|
1426 incomplete = ReadSOPMarker( aTile ); |
|
1427 } |
|
1428 |
|
1429 return incomplete; |
|
1430 } |