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1 /* |
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2 * Copyright (c) 2002 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: Camera Application Engine imaging quality level and container |
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15 * |
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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 CAEQUALITYLEVELS_H |
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21 #define CAEQUALITYLEVELS_H |
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22 |
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23 // INCLUDES |
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24 #include <ecam.h> |
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25 #include <e32base.h> |
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26 #include <e32std.h> |
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27 |
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28 // CONSTANTS |
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29 const TInt KCaeDefaultQltyLevelCount = 3; |
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30 const TInt KCaeMaxSdKeyLength = 10; |
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31 const TInt KCaeMaxQltyLevelStringLength = 256; |
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32 |
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33 // FORWARD DECLARATIONS |
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34 class CQualityLevel; |
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35 class RSharedDataClient; |
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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 * Camera Application Engine image/video quality levels container. |
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41 * |
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42 */ |
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43 NONSHARABLE_CLASS( CCaeQualityLevelsCont ) : public CBase |
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44 { |
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45 |
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46 public: // Constructors and destructor |
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47 |
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48 /** |
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49 * Destructor. |
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50 */ |
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51 virtual ~CCaeQualityLevelsCont(); |
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52 |
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53 /** |
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54 * Two-phased constructor. |
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55 */ |
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56 static CCaeQualityLevelsCont* NewL(); |
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57 |
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58 /** |
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59 * Initialize quality levels from Shared Data ini-file. |
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60 * @since 2.1 |
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61 * @param aSdUidQltyLevels Shared Data ini-file UID |
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62 * @return Count of quality levels initialized |
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63 */ |
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64 TInt InitFromSdL( |
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65 const TUid& aSdUidQltyLevels ); |
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66 |
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67 /** |
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68 * Initializes quality levels to hardcoded default values. |
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69 * @since 2.1 |
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70 * @return Count of quality levels initialized |
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71 */ |
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72 virtual TInt InitDefaultsL() = 0; |
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73 |
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74 /** |
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75 * Gets the quality level count. |
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76 * @since 2.1 |
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77 * @return Quality level count |
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78 */ |
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79 virtual TInt Count() const = 0; |
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80 |
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81 /** |
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82 * Get the specified quality level Shared Data key. |
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83 * @since 2.1 |
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84 * @param aIndex Quality level index |
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85 * @return Quality level Shared Data key |
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86 */ |
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87 virtual const TDes& Key( |
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88 TInt aIndex ) const = 0; |
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89 |
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90 protected: |
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91 |
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92 /** |
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93 * C++ constructor. |
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94 */ |
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95 CCaeQualityLevelsCont(); |
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96 |
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97 private: // Private methods. |
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98 |
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99 /** |
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100 * Fetches namebase setting from SharedData Camera ini file. |
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101 * @since 2.1 |
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102 * @param aSdUidQltyLevels Shared Data ini-file UID |
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103 * @param aIndex Quality level index |
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104 * @return void |
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105 */ |
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106 void FetchQualityLevelL( |
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107 RSharedDataClient& aSharedData, |
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108 const TUid& aSdUidQltyLevels, |
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109 TInt aIndex ); |
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110 |
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111 private: // Private pure virtual methods. |
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112 |
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113 /** |
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114 * Resizes quality level array. |
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115 * @since 2.1 |
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116 * @param aQualityLevelCount Quality level count for the new array |
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117 * @return void |
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118 */ |
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119 virtual void ResizeL( |
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120 TInt aQualityLevelCount ) = 0; |
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121 |
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122 /** |
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123 * Gets the quality level count Shared Data key. |
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124 * @since 2.1 |
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125 * @return Quality level count Shared Data key |
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126 */ |
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127 virtual const TDesC& QltyLevelCountSdKey() const = 0; |
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128 |
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129 /** |
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130 * Creates quality level string for SharedData Camera ini file. |
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131 * @since 2.1 |
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132 * @param aIndex Quality level index |
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133 * @param aDefaultQualityLevel Output quality level string |
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134 * @return void |
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135 */ |
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136 virtual void CreateQualityLevelString( |
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137 TInt aIndex, |
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138 TDes& aDefaultQualityLevel ) = 0; |
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139 |
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140 /** |
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141 * Parses quality level string to quality level object data. |
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142 * @since 2.1 |
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143 * @param aQualityLevelString Quality level string to parse |
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144 * @param aIndex Quality level index |
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145 * @return void |
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146 */ |
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147 virtual void ParseQualityLevelFromStringL( |
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148 const TDesC& qualityLevelString, |
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149 TInt aIndex ) = 0; |
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150 }; |
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151 |
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152 |
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153 |
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154 // CLASS DECLARATION |
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155 |
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156 /** |
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157 * Camera Application Engine image/video quality level. |
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158 * |
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159 */ |
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160 NONSHARABLE_CLASS( CQualityLevel ) : public CBase |
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161 { |
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162 public: |
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163 |
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164 /** |
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165 * Constructor. |
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166 */ |
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167 CQualityLevel(); |
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168 |
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169 /** |
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170 * Destructor. |
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171 */ |
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172 virtual ~CQualityLevel(); |
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173 |
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174 public: |
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175 |
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176 // Shared Data ini-file key. |
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177 TBuf<KCaeMaxSdKeyLength> iKey; |
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178 |
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179 }; |
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180 |
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181 #endif // CAEQUALITYLEVELS_H |