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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: JP2KCodeBlock class used to collect the codeblock |
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15 * related information such as compressed data and data length. |
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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 "JP2KCodeBlock.h" |
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22 #include "JP2KUtils.h" |
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23 |
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24 // EXTERNAL DATA STRUCTURES |
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25 |
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26 // EXTERNAL FUNCTION PROTOTYPES |
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27 |
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28 // CONSTANTS |
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29 |
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30 // MACROS |
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31 |
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32 // LOCAL CONSTANTS AND MACROS |
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33 |
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34 // MODULE DATA STRUCTURES |
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35 |
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36 // LOCAL FUNCTION PROTOTYPES |
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37 |
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38 // FORWARD DECLARATIONS |
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39 |
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40 // ============================= LOCAL FUNCTIONS =============================== |
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41 |
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42 // ============================ MEMBER FUNCTIONS =============================== |
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43 |
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44 // ----------------------------------------------------------------------------- |
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45 // CJ2kCodeBlock::CJ2kCodeBlock |
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46 // C++ default constructor can NOT contain any code, that |
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47 // might leave. |
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48 // ----------------------------------------------------------------------------- |
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49 // |
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50 CJ2kCodeBlock::CJ2kCodeBlock() : |
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51 iLastPass(-1), |
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52 iLengthBits(3) |
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53 { |
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54 } |
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55 |
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56 // Destructor |
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57 CJ2kCodeBlock::~CJ2kCodeBlock() |
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58 { |
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59 delete iDataSize; |
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60 iDataSize = 0; |
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61 |
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62 delete iPassesPerSegment; |
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63 iPassesPerSegment = 0; |
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64 |
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65 delete iNumSegment; |
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66 iNumSegment = 0; |
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67 |
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68 delete iData; |
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69 iData = 0; |
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70 } |
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71 |
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72 // ----------------------------------------------------------------------------- |
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73 // CJ2kCodeBlock::SetCodeBlockCanvas |
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74 // Set the canvas of the code block. |
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75 // (other items were commented in a header). |
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76 // ----------------------------------------------------------------------------- |
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77 // |
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78 void CJ2kCodeBlock::SetCodeBlockCanvas( TInt32 aX, TInt32 aY, TInt32 aWidth, TInt32 aHeight ) |
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79 { |
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80 iCodeBlockCanvas.iTl = TPoint( aX, aY ); |
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81 iCodeBlockCanvas.SetWidth( aWidth ); |
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82 iCodeBlockCanvas.SetHeight( aHeight ); |
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83 } |
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84 |
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85 // ----------------------------------------------------------------------------- |
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86 // CJ2kCodeBlock::InitializeL |
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87 // Initialize the number of segment. |
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88 // (other items were commented in a header). |
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89 // ----------------------------------------------------------------------------- |
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90 // |
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91 void CJ2kCodeBlock::InitializeL( TUint16 aLayer ) |
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92 { |
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93 iNumSegment = HBufC16::NewMaxL( aLayer ); |
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94 iNumSegment->Des().FillZ(); |
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95 } |
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96 |
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97 // ----------------------------------------------------------------------------- |
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98 // CJ2kCodeBlock::DataL |
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99 // Get the data buffer descriptor. |
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100 // (other items were commented in a header). |
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101 // ----------------------------------------------------------------------------- |
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102 // |
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103 HBufC8* CJ2kCodeBlock::DataL() |
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104 { |
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105 if ( iData ) |
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106 { |
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107 if ( iData->Des().MaxLength() < (TInt)iDataLength ) |
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108 { |
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109 iData = iData->ReAllocL( iDataLength ); |
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110 } |
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111 } |
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112 else |
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113 { |
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114 iData = HBufC8::NewL( iDataLength ); |
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115 } |
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116 |
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117 return iData; |
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118 } |
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119 |
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120 // ----------------------------------------------------------------------------- |
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121 // CJ2kCodeBlock::Data |
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122 // Get the pointer to the data portion. |
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123 // (other items were commented in a header). |
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124 // ----------------------------------------------------------------------------- |
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125 // |
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126 const TUint8* CJ2kCodeBlock::Data() const |
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127 { |
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128 if ( iData ) |
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129 { |
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130 return iData->Ptr(); |
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131 } |
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132 |
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133 return 0; |
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134 } |
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135 |