1 /* |
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2 * Copyright (c) 2004 - 2006 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: Image scaler |
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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 // INCLUDE FILES |
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21 #include "CVtEngSettings.h" |
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22 #include "VtEngUtils.h" |
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23 #include "CVtEngImageScaler.h" |
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24 #include <cvtimagebitmap.h> |
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25 #include <fbs.h> |
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26 #include <videotelephonyvariant.hrh> |
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27 #include <cvtlogger.h> |
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28 |
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29 // CONSTANTS |
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30 // The number of used bitmaps as scaling targets. |
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31 const TInt KVtEngTargetBitmapCount = 2; |
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32 |
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33 // ============================ MEMBER FUNCTIONS =============================== |
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34 |
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35 // ----------------------------------------------------------------------------- |
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36 // CVtEngImageScaler::NewL |
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37 // Two-phased constructor. |
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38 // ----------------------------------------------------------------------------- |
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39 // |
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40 MVtEngImageScaler* CVtEngImageScaler::NewL( |
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41 MVtEngScalerObserver& aObserver ) |
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42 { |
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43 __VTPRINTENTER( "Scaler.NewL" ) |
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44 CVtEngImageScaler* scaler = new ( ELeave ) CVtEngImageScaler( aObserver ); |
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45 CleanupStack::PushL( scaler ); |
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46 scaler->ConstructL(); |
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47 CleanupStack::Pop( scaler ); |
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48 __VTPRINTEXIT( "Scaler.NewL" ) |
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49 return scaler; |
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50 } |
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51 |
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52 // ----------------------------------------------------------------------------- |
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53 // CVtEngImageScaler::ConstructL |
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54 // Symbian 2nd phase constructor can leave. |
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55 // ----------------------------------------------------------------------------- |
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56 // |
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57 void CVtEngImageScaler::ConstructL() |
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58 { |
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59 iVtScaler = CVtImageScaler::NewL( *this ); |
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60 GetScalingMethodL(); |
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61 iVtScaler->SetQualityL( iScalingMethod ); |
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62 } |
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63 |
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64 // ----------------------------------------------------------------------------- |
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65 // CVtEngImageScaler::ScaleL |
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66 // Scaling method. |
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67 // ----------------------------------------------------------------------------- |
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68 // |
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69 void CVtEngImageScaler::ScaleL( |
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70 TInt aSourceIndex ) |
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71 { |
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72 __VTPRINTENTER( "Scaler.ScaleL" ) |
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73 __VTPRINT2( DEBUG_MEDIA | DEBUG_DETAIL, "Scaler:ScaleL index=%d", |
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74 aSourceIndex ) |
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75 __VTPRINT2( DEBUG_MEDIA | DEBUG_DETAIL, "Scaler:ScaleL target index=%d", |
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76 iTargetBitmapInUse ) |
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77 if ( iVtScaler->IsActive() ) |
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78 { |
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79 __VTPRINT( DEBUG_MEDIA | DEBUG_DETAIL, "Scaler:ScaleL NActive" ) |
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80 User::Leave( KErrInUse ); |
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81 } |
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82 |
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83 // If there is no bitmaps done, do leave. |
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84 // The caller should call ConfigureL. |
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85 if ( iSources.Count() <= 0 || iTargets.Count() <= 0 ) |
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86 { |
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87 __VTPRINT( DEBUG_MEDIA | DEBUG_DETAIL, "Scaler:ScaleL: not conf" ) |
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88 User::Leave( KErrNotReady ); |
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89 } |
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90 iVtScaler->ScaleL( *iSources[ aSourceIndex ] , |
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91 *iTargets[iTargetBitmapInUse] ); |
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92 __VTPRINTEXIT( "Scaler.ScaleL" ) |
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93 } |
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94 |
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95 // ----------------------------------------------------------------------------- |
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96 // CVtEngImageScaler::Configure |
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97 // Configure scaling. |
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98 // ----------------------------------------------------------------------------- |
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99 // |
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100 TBool CVtEngImageScaler::ConfigureL( |
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101 TDisplayMode aDisplayMode, |
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102 TSize aSize, |
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103 TInt aSourceHandle1, |
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104 TInt aSourceHandle2 ) |
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105 { |
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106 __VTPRINTENTER( "Scaler.ConfigureL" ) |
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107 __VTPRINT( DEBUG_MEDIA , "================== Scaler.Config ==================" ) |
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108 __VTPRINT2( DEBUG_MEDIA, " aSize.iWidth:%d ", aSize.iWidth) |
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109 __VTPRINT2( DEBUG_MEDIA, " aSize.iHeight:%d ", aSize.iHeight ) |
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110 __VTPRINT2( DEBUG_MEDIA, " aDisplayMode:%d", aDisplayMode ) |
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111 __VTPRINT( DEBUG_MEDIA , "================== Scaler.Config ==================" ) |
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112 |
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113 TInt sourceHandle1( 0 ); |
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114 if ( iSources.Count() > 0 ) |
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115 { |
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116 CVtImageBitmap* bmp = iSources[ EFirstBitmap ]; |
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117 if ( bmp ) |
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118 { |
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119 sourceHandle1 = bmp->Bitmap().Handle(); |
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120 } |
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121 } |
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122 TInt sourceHandle2( 0 ); |
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123 if ( iSources.Count() > 1 ) |
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124 { |
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125 CVtImageBitmap* bmp = iSources[ ESecondBitmap ]; |
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126 if ( bmp ) |
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127 { |
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128 sourceHandle2 = bmp->Bitmap().Handle(); |
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129 } |
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130 } |
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131 |
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132 // Do we have to cancel scaling first? |
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133 TBool cancelled( iVtScaler->IsActive() ); |
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134 |
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135 if ( aSourceHandle1 != sourceHandle1 || aSourceHandle2 != sourceHandle2 |
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136 || aSize != iSize || iMode != aDisplayMode ) |
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137 { |
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138 if ( cancelled ) |
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139 { |
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140 __VTPRINT( DEBUG_MEDIA | DEBUG_DETAIL, "Scaler:Config cancel" ) |
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141 Cancel(); |
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142 } |
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143 } |
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144 else |
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145 { |
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146 // Do we need the update => NO |
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147 __VTPRINTEXITR( "Scaler.ConfigureL %d", EFalse ) |
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148 return EFalse; |
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149 } |
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150 |
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151 // Store new mode and size. |
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152 iMode = aDisplayMode; |
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153 iSize = aSize; |
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154 |
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155 // The RVD source images have changed. |
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156 if ( aSourceHandle1 != sourceHandle1 || aSourceHandle2 != sourceHandle2 ) |
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157 { |
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158 __VTPRINT( DEBUG_MEDIA | DEBUG_DETAIL, |
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159 "Scaler:ConfigureL create bitmaps" ) |
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160 CVtImageBitmap* vtBitmap = CVtImageBitmap::NewL( aSourceHandle1 ); |
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161 CleanupStack::PushL( vtBitmap ); |
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162 CVtImageBitmap* vtBitmap2 = CVtImageBitmap::NewL( aSourceHandle2 ); |
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163 CleanupStack::PushL( vtBitmap2 ); |
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164 |
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165 __VTPRINT( DEBUG_MEDIA | DEBUG_DETAIL, "Scaler:ConfigureL source reset" ) |
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166 iSources.ResetAndDestroy(); |
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167 iSources.AppendL( vtBitmap ); |
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168 iSources.AppendL( vtBitmap2 ); |
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169 CleanupStack::Pop( KVtEngTargetBitmapCount ); // vtBitMaps |
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170 } |
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171 |
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172 __VTPRINT( DEBUG_MEDIA | DEBUG_DETAIL, "Scaler:ConfigureL create targets" ) |
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173 CVtImageBitmap* vtBitmapT = CVtImageBitmap::NewL( aSize, aDisplayMode ); |
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174 CleanupStack::PushL( vtBitmapT ); |
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175 CVtImageBitmap* vtBitmapT2 = CVtImageBitmap::NewL( aSize, aDisplayMode ); |
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176 CleanupStack::PushL( vtBitmapT2 ); |
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177 |
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178 __VTPRINT( DEBUG_MEDIA | DEBUG_DETAIL, "Scaler:ConfigureL target reset" ) |
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179 iTargets.ResetAndDestroy(); |
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180 iTargets.AppendL( vtBitmapT ); |
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181 iTargets.AppendL( vtBitmapT2 ); |
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182 CleanupStack::Pop( KVtEngTargetBitmapCount ); // vtBitMapTs |
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183 |
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184 __VTPRINTEXITR( "Scaler.ConfigureL %d", cancelled ) |
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185 return cancelled; |
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186 } |
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187 |
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188 // ----------------------------------------------------------------------------- |
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189 // CVtEngImageScaler::ScalingFinished |
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190 // Callback telling that scaling is done. |
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191 // ----------------------------------------------------------------------------- |
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192 // |
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193 void CVtEngImageScaler::ScalingFinished( TInt aError ) |
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194 { |
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195 __VTPRINTENTER( "Scaler.ScalingFinished" ) |
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196 |
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197 __VTPRINT2( DEBUG_MEDIA | DEBUG_DETAIL, "Scaler:ScaleFin ", aError ) |
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198 |
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199 if ( aError == KErrNone ) |
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200 { |
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201 CFbsBitmap& bitmap = iTargets [ iTargetBitmapInUse ]->Bitmap(); |
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202 __VTPRINT2( DEBUG_MEDIA, "Scaler.ScalingFin index", iTargetBitmapInUse ) |
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203 |
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204 if ( iTargetBitmapInUse == EFirstBitmap ) |
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205 { |
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206 iTargetBitmapInUse = ESecondBitmap; |
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207 } |
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208 else |
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209 { |
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210 iTargetBitmapInUse = EFirstBitmap; |
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211 } |
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212 // Notify client of done scaling |
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213 iObserver.ScalingCompleted( &bitmap, aError ); |
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214 } |
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215 else |
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216 { |
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217 iObserver.ScalingCompleted( NULL, aError ); |
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218 } |
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219 __VTPRINTEXIT( "Scaler.ScalingFinished" ) |
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220 } |
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221 |
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222 // ----------------------------------------------------------------------------- |
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223 // CVtEngImageScaler::~CVtEngImageScaler |
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224 // Destructor. |
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225 // ----------------------------------------------------------------------------- |
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226 // |
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227 CVtEngImageScaler::~CVtEngImageScaler() |
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228 { |
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229 __VTPRINTENTER( "Scaler.~" ) |
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230 |
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231 __VTPRINT( DEBUG_MEDIA | DEBUG_DETAIL, "Scaler:Dtor" ) |
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232 iTargets.ResetAndDestroy(); |
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233 iTargets.Close(); |
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234 iSources.ResetAndDestroy(); |
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235 iSources.Close(); |
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236 delete iVtScaler; |
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237 __VTPRINTEXIT( "Scaler.~" ) |
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238 } |
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239 |
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240 // ----------------------------------------------------------------------------- |
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241 // CVtEngImageScaler::CVtEngImageScaler |
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242 // C++ constructor. |
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243 // ----------------------------------------------------------------------------- |
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244 // |
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245 CVtEngImageScaler::CVtEngImageScaler( |
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246 MVtEngScalerObserver& aObserver ) : |
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247 iObserver( aObserver ), iTargetBitmapInUse ( EFirstBitmap ), |
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248 iScalingMethod( CVtImageScaler::EWeightedAverage ) |
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249 { |
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250 } |
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251 |
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252 // ----------------------------------------------------------------------------- |
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253 // CVtEngImageScaler::Release |
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254 // Interface function implementation to delete the implementation. |
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255 // ----------------------------------------------------------------------------- |
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256 // |
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257 void CVtEngImageScaler::Release() |
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258 { |
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259 // Delete myself |
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260 __VTPRINTENTER( "Scaler.Release" ) |
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261 delete this; |
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262 __VTPRINTEXIT( "Scaler.Release" ) |
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263 } |
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264 |
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265 // ----------------------------------------------------------------------------- |
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266 // VtEngScalerFactory::CreateScalerL |
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267 // Creates the image scaler. |
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268 // ----------------------------------------------------------------------------- |
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269 // |
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270 MVtEngImageScaler* VtEngScalerFactory::CreateScalerL( |
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271 MVtEngScalerObserver& aObserver ) |
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272 { |
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273 __VTPRINT( DEBUG_MEDIA | DEBUG_DETAIL, |
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274 "VtEngScalerFactory::CreateScalerL" ) |
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275 return CVtEngImageScaler::NewL( aObserver ); |
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276 } |
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277 |
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278 // ----------------------------------------------------------------------------- |
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279 // CVtEngImageScaler::Cancel |
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280 // Cancels the conversion. |
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281 // ----------------------------------------------------------------------------- |
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282 // |
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283 TInt CVtEngImageScaler::Cancel() |
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284 { |
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285 __VTPRINTENTER( "Scaler.Cancel" ) |
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286 iVtScaler->Cancel(); |
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287 __VTPRINTEXIT( "Scaler.Cancel" ) |
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288 return KErrNone; |
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289 } |
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290 |
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291 // ----------------------------------------------------------------------------- |
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292 // CVtEngImageScaler::GetScalingMethodL |
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293 // Gets the used scaling method from local variation. |
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294 // ----------------------------------------------------------------------------- |
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295 // |
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296 void CVtEngImageScaler::GetScalingMethodL() |
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297 { |
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298 __VTPRINTENTER( "Scaler.GetScalingMethodL" ) |
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299 // Check if the scaling method is non-default |
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300 CVtEngSettings& settings = CVtEngUtility::Settings(); |
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301 if( settings.CheckBits( |
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302 KVTLVFlagScalingMethodENearest ) ) |
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303 { |
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304 iScalingMethod = CVtImageScaler::ENearest; |
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305 } |
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306 else if ( settings.CheckBits( |
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307 KVTLVFlagScalingMethodEBilinear ) ) |
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308 { |
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309 iScalingMethod = CVtImageScaler::EBilinear; |
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310 } |
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311 __VTPRINTEXITR( "Scaler.GetScalingMethodL %d", (TInt) iScalingMethod ) |
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312 } |
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313 |
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314 // End of File |
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