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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 #ifndef __JP2KCODEBLOCK_H__ |
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21 #define __JP2KCODEBLOCK_H__ |
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22 |
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23 // INCLUDES |
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24 #include <e32base.h> |
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25 |
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26 // CONSTANTS |
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27 |
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28 // MACROS |
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29 |
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30 // DATA TYPES |
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31 |
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32 // FUNCTION PROTOTYPES |
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33 |
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34 // FORWARD DECLARATIONS |
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35 class CJ2kPacket; |
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36 |
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37 // CLASS DECLARATION |
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38 |
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39 /** |
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40 * JP2KCodeBlock class used to collect the code block |
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41 * related information such as compressed data, data |
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42 * length, and etc. |
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43 * |
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44 * JP2KCodec.dll |
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45 * @since 2.6 |
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46 */ |
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47 class CJ2kCodeBlock : public CBase |
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48 { |
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49 public: // Constructors and destructor |
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50 |
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51 /** |
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52 * C++ default constructor. |
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53 */ |
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54 CJ2kCodeBlock(); |
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55 |
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56 /** |
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57 * Destructor. |
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58 */ |
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59 virtual ~CJ2kCodeBlock(); |
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60 |
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61 public: // New functions |
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62 |
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63 /** |
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64 * Set the canvas of the code block |
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65 * @since 2.6 |
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66 * @param aX: x position of the codeblock. |
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67 * @param aY: y position of the codeblock. |
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68 * @param aWidth: width of the codeblock. |
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69 * @param aHeight: height of the codeblock. |
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70 */ |
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71 void SetCodeBlockCanvas( TInt32 aX, TInt32 aY, TInt32 aWidth, TInt32 aHeight ); |
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72 |
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73 /** |
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74 * Initialize the number of segment |
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75 * @since 2.6 |
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76 * @param aLayer: number of layer. |
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77 */ |
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78 void InitializeL( TUint16 aLayer ); |
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79 |
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80 /** |
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81 * Get the data buffer descriptor |
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82 * @since 2.6 |
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83 * @return HBufC8*: pointer to the descriptor of the data buffer. |
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84 */ |
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85 HBufC8* DataL(); |
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86 |
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87 /** |
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88 * Get the pointer to the data portion |
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89 * @since 2.6 |
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90 * @return TUint8*: pointer to the data buffer. |
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91 */ |
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92 const TUint8* Data() const; |
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93 |
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94 /** |
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95 * Get the last pass |
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96 * @since 2.6 |
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97 * @return TInt8: the last pass. |
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98 */ |
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99 TInt8 LastPass() const; |
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100 |
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101 /** |
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102 * Get the pass index |
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103 * @since 2.6 |
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104 * @return TInt8: the pass index. |
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105 */ |
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106 TUint8 PassIndex() const; |
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107 |
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108 /** |
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109 * Get the number of empty bit planes |
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110 * @since 2.6 |
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111 * @return TInt8: the empty bit planes. |
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112 */ |
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113 TUint8 EmptyBitplanes() const; |
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114 |
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115 /** |
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116 * Get the canvas of the codeblock |
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117 * @since 2.6 |
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118 * @return TRect&: reference to the canvas of the codeblock. |
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119 */ |
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120 const TRect& CodeBlockCanvas() const; |
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121 |
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122 /** |
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123 * Get the data length |
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124 * @since 2.6 |
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125 * @return TInt32: the data length. |
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126 */ |
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127 TUint32 DataLength() const; |
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128 |
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129 /** |
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130 * Get the data size at specific segment |
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131 * @since 2.6 |
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132 * @param aIndex: the specific segment. |
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133 * @return TInt16: the data size at specific segment. |
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134 */ |
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135 TUint16 CblkLength( TUint16 aIndex ) const; |
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136 |
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137 /** |
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138 * Get the pass per segment at specific segment |
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139 * @since 2.6 |
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140 * @param aIndex: the specific segment. |
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141 * @return TInt16: the pass per segment at specific segment. |
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142 */ |
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143 TUint16 PassesPerSegment( TUint16 aIndex ) const; |
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144 |
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145 /** |
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146 * Reset the pass index to 0 |
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147 * @since 2.6 |
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148 */ |
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149 void ResetPassIndex(); |
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150 |
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151 /** |
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152 * Increment the pass index |
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153 * @since 2.6 |
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154 */ |
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155 void IncrementPassIndex(); |
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156 |
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157 /** |
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158 * Set to indicate that the codeblock has been decoded |
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159 * @since 2.6 |
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160 */ |
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161 void SetCodeBlockDecoded(); |
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162 |
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163 public: // Functions from base classes |
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164 |
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165 protected: // New functions |
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166 |
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167 protected: // Functions from base classes |
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168 |
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169 private: |
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170 |
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171 public: // Data |
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172 |
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173 protected: // Data |
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174 |
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175 private: // Data |
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176 |
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177 // Last pass |
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178 TInt8 iLastPass; |
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179 |
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180 // Pass index |
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181 TUint8 iPassIndex; |
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182 |
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183 // Empty bit plane |
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184 TUint8 iEmptyBitplane; |
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185 |
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186 // Bits length |
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187 TUint8 iLengthBits; |
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188 |
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189 // Data length |
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190 TUint32 iDataLength; |
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191 |
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192 // Data size of each segment |
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193 HBufC16 *iDataSize; |
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194 |
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195 // Number of pass per segment |
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196 HBufC16 *iPassesPerSegment; |
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197 |
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198 // Number of segment |
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199 HBufC16 *iNumSegment; |
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200 |
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201 // Canvas of the code block |
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202 TRect iCodeBlockCanvas; |
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203 |
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204 // Compressed image data |
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205 HBufC8 *iData; |
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206 |
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207 // True if codeblock has been decoded |
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208 TUint8 iIsDecoded; |
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209 |
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210 public: // Friend classes |
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211 friend class CJ2kPacket; |
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212 |
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213 protected: // Friend classes |
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214 |
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215 private: // Friend classes |
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216 }; |
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217 |
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218 // For inliners. |
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219 #include "JP2KCodeBlock.inl" |
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220 |
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221 #endif // __JP2KCODEBLOCK_H__ |
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222 |