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1 /* |
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2 * Copyright (c) 2004-2008 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: Provides functionality adjust image contrast. |
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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 // INCLUDE FILES |
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20 #include "AknsRlEffectPluginContrast.h" |
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21 #include "AknsRlEffectUtil.h" |
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22 #include "fx_asm_versions.h" |
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23 |
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24 // ================ TEMPLATE IMPL. OF CONTRAST ================================= |
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25 /** |
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26 * Template implementation of Contrast. Type defines the used data type for |
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27 * iterating over the bitmap data. X, R, G and B define the used pixel color bit |
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28 * layout. |
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29 */ |
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30 template<class Type,TInt X, TInt R, TInt G, TInt B> |
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31 class AknsRlEffectContrast |
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32 { |
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33 public: |
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34 //------------------------------------------------------------------------ |
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35 static void Process( const CFbsBitmap& aTarget, |
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36 const CFbsBitmap& aSource, |
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37 const TInt aAdjustment ) |
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38 { |
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39 // ScanLineLength returns bytes, but width must match the Type |
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40 TInt width = CFbsBitmap::ScanLineLength( aSource.SizeInPixels().iWidth, |
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41 aSource.DisplayMode() ) / sizeof(Type); |
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42 TInt height = aSource.SizeInPixels().iHeight; |
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43 |
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44 TInt pixelCount = width * height; |
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45 TInt r,g,b; |
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46 |
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47 aTarget.LockHeap( ETrue ); // Lock the global bitmap buffer |
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48 Type* dataT = reinterpret_cast<Type*>( aTarget.DataAddress() ); |
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49 Type* dataS = reinterpret_cast<Type*>( aSource.DataAddress() ); |
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50 |
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51 for( TInt index = 0; index < pixelCount; ++index ) |
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52 { |
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53 // Contrast is simple, blend with middle gray (127) |
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54 // Note: It is assumed that arithmetic shifting is supported |
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55 // -> negative values are shifted correctly |
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56 r = (AknsRlRgb<Type,X,R,G,B>::R8(*dataS) * (255 + aAdjustment) - aAdjustment * 127) >> 8; |
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57 g = (AknsRlRgb<Type,X,R,G,B>::G8(*dataS) * (255 + aAdjustment) - aAdjustment * 127) >> 8; |
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58 b = (AknsRlRgb<Type,X,R,G,B>::B8(*dataS) * (255 + aAdjustment) - aAdjustment * 127) >> 8; |
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59 |
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60 if( r < 0 ) r = 0; else if( r > 255 ) r = 255; |
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61 if( g < 0 ) g = 0; else if( g > 255 ) g = 255; |
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62 if( b < 0 ) b = 0; else if( b > 255 ) b = 255; |
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63 |
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64 AknsRlRgb<Type,X,R,G,B>::SetRgb8( dataT, TUint8(r), TUint8(g), TUint8(b) ); |
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65 |
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66 dataT++; |
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67 dataS++; |
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68 } |
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69 |
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70 aTarget.UnlockHeap( ETrue ); |
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71 } |
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72 }; // End of AknsRlEffectContrast |
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73 |
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74 // ============================ MEMBER FUNCTIONS =============================== |
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75 |
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76 // ----------------------------------------------------------------------------- |
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77 // CAknsRlEffectPluginContrast::CAknsRlEffectPluginContrast |
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78 // C++ default constructor can NOT contain any code, that |
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79 // might leave. |
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80 // ----------------------------------------------------------------------------- |
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81 // |
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82 CAknsRlEffectPluginContrast::CAknsRlEffectPluginContrast() |
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83 { |
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84 } |
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85 |
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86 // ----------------------------------------------------------------------------- |
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87 // Destructor |
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88 // ----------------------------------------------------------------------------- |
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89 // |
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90 CAknsRlEffectPluginContrast::~CAknsRlEffectPluginContrast() |
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91 { |
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92 iContext = NULL; // Removes lint nag |
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93 } |
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94 |
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95 // ----------------------------------------------------------------------------- |
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96 // CAknsRlEffectPluginContrast::EffectUid |
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97 // ----------------------------------------------------------------------------- |
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98 // |
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99 TUid CAknsRlEffectPluginContrast::EffectUid() const |
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100 { |
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101 return TUid::Uid( KAknsRlEffectPluginContrastUID ); |
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102 } |
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103 |
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104 // ----------------------------------------------------------------------------- |
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105 // CAknsRlEffectPluginContrast::Effect |
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106 // ----------------------------------------------------------------------------- |
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107 // |
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108 MAknsRlEffect* CAknsRlEffectPluginContrast::Effect( const TInt aInterface ) |
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109 { |
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110 if( aInterface == KAknsRlEffectPluginInterfaceEffect ) |
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111 return this; |
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112 return NULL; |
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113 } |
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114 |
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115 // ----------------------------------------------------------------------------- |
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116 // CAknsRlEffectPluginContrast::InitializeL |
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117 // ----------------------------------------------------------------------------- |
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118 // |
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119 void CAknsRlEffectPluginContrast::InitializeL() |
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120 { |
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121 iContext = NULL; |
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122 } |
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123 |
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124 // ----------------------------------------------------------------------------- |
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125 // CAknsRlEffectPluginContrast::Release |
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126 // ----------------------------------------------------------------------------- |
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127 // |
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128 void CAknsRlEffectPluginContrast::Release() |
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129 { |
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130 } |
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131 |
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132 // ----------------------------------------------------------------------------- |
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133 // CAknsRlEffectPluginContrast::ActivateL |
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134 // ----------------------------------------------------------------------------- |
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135 // |
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136 void CAknsRlEffectPluginContrast::ActivateL( MAknsRlEffectContext* aContext ) |
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137 { |
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138 if( !aContext ) // We absolutely need the context |
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139 { |
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140 User::Leave( KErrArgument ); |
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141 } |
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142 |
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143 iContext = aContext; |
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144 |
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145 iAdjustment = 0; |
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146 } |
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147 |
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148 // ----------------------------------------------------------------------------- |
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149 // CAknsRlEffectPluginContrast::Deactivate |
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150 // ----------------------------------------------------------------------------- |
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151 // |
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152 void CAknsRlEffectPluginContrast::Deactivate() |
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153 { |
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154 } |
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155 |
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156 // ----------------------------------------------------------------------------- |
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157 // CAknsRlEffectPluginContrast::SetParametersL |
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158 // ----------------------------------------------------------------------------- |
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159 // |
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160 void CAknsRlEffectPluginContrast::SetParametersL( MAknsRlParameterIterator& aParameters ) |
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161 { |
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162 // Iterate over available parameters |
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163 while( aParameters.HasNext() ) |
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164 { |
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165 const TAknsRlParameterData* param = aParameters.NextL(); |
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166 |
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167 // Fetch adjustment value |
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168 if( param->iName->Compare( KAknsRlEffectContrastAdjustment ) == 0 ) |
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169 { |
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170 if( param->iType != EAknsRlParameterTypeNumber ) |
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171 User::Leave( KErrArgument ); |
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172 |
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173 iAdjustment = param->iNumber; |
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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 // CAknsRlEffectPluginContrast::GetCapabilities |
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180 // ----------------------------------------------------------------------------- |
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181 // |
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182 void CAknsRlEffectPluginContrast::GetCapabilities( TAknsRlEffectCaps& aCaps ) |
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183 { |
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184 aCaps.iOutputLayerSupport = KAknsRlLayerRGBOnly; |
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185 aCaps.iInputLayerASupport = KAknsRlLayerRGBOnly; |
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186 aCaps.iInputLayerBSupport = KAknsRlLayerNone; |
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187 } |
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188 |
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189 // ----------------------------------------------------------------------------- |
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190 // CAknsRlEffectPluginContrast::Render |
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191 // ----------------------------------------------------------------------------- |
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192 // |
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193 TInt CAknsRlEffectPluginContrast::Render( const TAknsRlRenderOpParam& aParam ) |
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194 { |
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195 if( !iContext ) // We absolutely need the context |
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196 { |
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197 return KErrBadHandle; |
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198 } |
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199 |
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200 // To do anything we need both, the output layer and input layer |
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201 if( ( aParam.iOutputLayerStatus & KAknsRlLayerRGBOnly ) && |
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202 ( aParam.iInputLayerAStatus & KAknsRlLayerRGBOnly ) ) |
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203 { |
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204 // Query the layers, uninitialized because we process the whole image |
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205 TAknsRlLayerData dataTarget; |
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206 TRAPD( err, iContext->GetLayerDataL( dataTarget, aParam.iOutputLayerIndex, |
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207 aParam.iOutputLayerStatus, EFalse ) ); |
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208 if( KErrNone != err ) |
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209 return KErrArgument; |
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210 |
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211 TAknsRlLayerData dataSource; |
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212 TRAP( err, iContext->GetLayerDataL( dataSource, aParam.iInputLayerAIndex, |
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213 aParam.iInputLayerAStatus, EFalse ) ); |
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214 if( KErrNone != err ) |
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215 return KErrArgument; |
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216 |
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217 if( !dataTarget.iRGBBitmap ) // We need the target bitmap |
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218 return KErrBadHandle; |
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219 |
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220 if( !dataSource.iRGBBitmap ) // We need the source bitmap |
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221 return KErrBadHandle; |
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222 |
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223 TDisplayMode modeT = dataTarget.iRGBBitmap->DisplayMode(); |
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224 TDisplayMode modeS = dataSource.iRGBBitmap->DisplayMode(); |
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225 |
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226 #ifndef ARM_VERSION // winscw |
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227 // Process the filter |
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228 if( EColor64K == modeS && EColor64K == modeT ) |
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229 { |
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230 AknsRlEffectContrast<TUint16,0,5,6,5>::Process( |
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231 *dataTarget.iRGBBitmap, |
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232 *dataSource.iRGBBitmap, |
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233 iAdjustment ); |
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234 } |
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235 else if( EColor16MU == modeS && EColor16MU == modeT ) |
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236 { |
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237 AknsRlEffectContrast<TUint32,8,8,8,8>::Process( |
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238 *dataTarget.iRGBBitmap, |
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239 *dataSource.iRGBBitmap, |
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240 iAdjustment ); |
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241 } |
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242 #else // ARM |
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243 // Process the filter |
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244 if( (EColor64K == modeS && EColor64K == modeT) || |
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245 (EColor16MU == modeS && EColor16MU == modeT) ) |
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246 { |
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247 AProcessContrast(*dataTarget.iRGBBitmap, |
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248 *dataSource.iRGBBitmap, |
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249 iAdjustment, |
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250 modeS ); |
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251 } |
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252 #endif |
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253 else |
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254 { |
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255 // Provided layers have illegal display mode combination |
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256 return KErrArgument; |
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257 } |
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258 } |
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259 else |
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260 { |
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261 // Required layers were not provided |
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262 return KErrArgument; |
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263 } |
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264 |
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265 return KErrNone; |
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266 } |
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267 |
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268 // End of File |