1 /* |
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2 * Copyright (c) 2007-2010 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: Implemantation of CCamSnapshot class. |
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15 * Temporary own implementation of MCameraSnapshot. |
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16 * To be replaced by ECam CCamera::CCameraSnapshot. |
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17 * |
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18 */ |
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19 |
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20 |
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21 #include "camcameracontrollerflags.hrh" |
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22 |
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23 #include <e32base.h> |
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24 #include <fbs.h> |
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25 |
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26 #include <ecam/camerasnapshot.h> |
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27 |
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28 #include "camlogging.h" |
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29 #include "mcamcameraobserver.h" |
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30 #include "camcameraevents.h" |
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31 #include "cambuffer.h" |
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32 #include "cambuffershare.h" |
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33 #include "camimagedecoder.h" |
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34 #include "cambitmapscaler.h" |
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35 #include "camsnapshot.h" |
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36 |
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37 |
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38 |
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39 |
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40 |
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41 |
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42 // =========================================================================== |
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43 // Local constants |
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44 static const TPoint KDefaultPosition = TPoint(0,0); |
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45 static const TRgb KDefaultBackgroudColor = KRgbWhite; |
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46 static const TUint32 KSupportedSnapshotFormats = |
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47 ( CCamera::EFormatFbsBitmapColor4K |
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48 | CCamera::EFormatFbsBitmapColor64K |
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49 | CCamera::EFormatFbsBitmapColor16M |
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50 | CCamera::EFormatFbsBitmapColor16MU |
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51 ); |
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52 static const TInt KCallbackPriority = CActive::EPriorityIdle; |
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53 |
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54 static const TUint KEventInterest = ( ECamCameraEventClassImage |
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55 | ECamCameraEventClassVideo |
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56 | ECamCameraEventClassVfData |
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57 ); |
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58 |
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59 // =========================================================================== |
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60 // Local methods |
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61 |
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62 #ifndef CAMERAAPP_CAPI_V2 |
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63 |
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64 // Not needed when new CAPI support ready. |
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65 TECAMEvent::TECAMEvent( TUid aEventType, |
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66 TInt aErrorCode ) |
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67 : iErrorCode( aErrorCode ) |
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68 { |
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69 iEventType.iUid = aEventType.iUid; |
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70 #pragma message("camsnapshot.cpp, temporarily define TECAMEvent constructor") |
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71 } |
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72 #endif |
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73 |
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74 |
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75 #include "campointerutility.inl" |
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76 using namespace NCamCameraController; |
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77 |
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78 |
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79 // =========================================================================== |
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80 // public constructors and destructor |
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81 |
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82 // --------------------------------------------------------------------------- |
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83 // static 2-phase constructor |
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84 // --------------------------------------------------------------------------- |
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85 // |
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86 CCamSnapshot* |
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87 CCamSnapshot::NewL( CCamera& aCamera, |
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88 MCameraObserver2& aObserver, |
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89 MCamCameraObservable& aObservable ) |
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90 { |
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91 CCamSnapshot* self = |
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92 new (ELeave) CCamSnapshot( aCamera, aObserver, aObservable ); |
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93 |
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94 CleanupStack::PushL( self ); |
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95 self->ConstructL(); |
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96 CleanupStack::Pop( self ); |
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97 |
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98 return self; |
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99 } |
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100 |
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101 // --------------------------------------------------------------------------- |
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102 // Destructor |
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103 // --------------------------------------------------------------------------- |
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104 // |
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105 CCamSnapshot::~CCamSnapshot() |
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106 { |
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107 PRINT( _L("Camera => ~CCamSnapshot") ); |
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108 iObservable.DetachObserver( this ); |
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109 |
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110 delete iSnapshotBitmap; |
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111 |
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112 // No need to Cancel(), destructors do it already. |
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113 delete iIdle; |
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114 delete iDecoder; |
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115 delete iScaler; |
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116 |
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117 SetImageData( NULL ); |
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118 |
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119 PRINT( _L("Camera <= ~CCamSnapshot") ); |
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120 } |
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121 |
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122 // =========================================================================== |
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123 // from MCameraSnapshot |
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124 |
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125 // --------------------------------------------------------------------------- |
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126 // SupportedFormats |
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127 // --------------------------------------------------------------------------- |
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128 // |
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129 TUint32 |
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130 CCamSnapshot::SupportedFormats() |
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131 { |
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132 return KSupportedSnapshotFormats; |
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133 } |
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134 |
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135 |
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136 // --------------------------------------------------------------------------- |
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137 // PrepareSnapshotL |
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138 // --------------------------------------------------------------------------- |
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139 // |
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140 void |
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141 CCamSnapshot::PrepareSnapshotL( CCamera::TFormat aFormat, |
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142 const TPoint& aPosition, |
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143 const TSize& aSize, |
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144 const TRgb& aBgColor, |
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145 TBool aMaintainAspectRatio ) |
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146 { |
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147 PRINT( _L("Camera => CCamSnapshot::PrepareSnapshotL") ); |
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148 |
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149 if( !(KSupportedSnapshotFormats & aFormat) ) |
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150 { |
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151 PRINT( _L("Camera <> Not supported format, LEAVE") ); |
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152 User::Leave( KErrNotSupported ); |
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153 } |
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154 else |
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155 { |
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156 PRINT( _L("Camera <> do prepare..") ); |
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157 iSnapshotOn = EFalse; |
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158 iStatus = KErrNotReady; |
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159 iDecoder->Cancel(); |
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160 iScaler->Cancel(); |
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161 iSnapshotBitmap->Reset(); |
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162 |
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163 PRINT( _L("Camera <> Init bitmap scaler..") ); |
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164 iScaler->InitScalingL( aSize, |
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165 Format2DisplayMode( iFormat ), |
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166 aMaintainAspectRatio ); |
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167 |
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168 PRINT1( _L("Camera <> Attach as controller observer, interest: %032b"), KEventInterest ); |
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169 iObservable.AttachObserverL( this, KEventInterest ); |
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170 |
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171 PRINT( _L("Camera <> Store parameters..") ); |
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172 iFormat = aFormat; |
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173 iPosition = aPosition; |
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174 iSize = aSize; |
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175 iBackgroundColor = aBgColor; |
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176 iMaintainAspectRatio = aMaintainAspectRatio; |
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177 } |
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178 |
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179 PRINT( _L("Camera <= CCamSnapshot::PrepareSnapshotL") ); |
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180 } |
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181 |
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182 |
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183 // --------------------------------------------------------------------------- |
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184 // PrepareSnapshotL |
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185 // --------------------------------------------------------------------------- |
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186 // |
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187 void |
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188 CCamSnapshot::PrepareSnapshotL( CCamera::TFormat aFormat, |
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189 const TSize& aSize, |
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190 TBool aMaintainAspectRatio ) |
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191 { |
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192 PrepareSnapshotL( aFormat, |
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193 KDefaultPosition, |
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194 aSize, |
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195 KDefaultBackgroudColor, |
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196 aMaintainAspectRatio ); |
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197 } |
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198 |
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199 |
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200 // --------------------------------------------------------------------------- |
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201 // SetBgColorL |
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202 // --------------------------------------------------------------------------- |
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203 // |
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204 void |
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205 CCamSnapshot::SetBgColorL( const TRgb& aBgColor ) |
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206 { |
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207 iBackgroundColor = aBgColor; |
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208 } |
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209 |
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210 |
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211 // --------------------------------------------------------------------------- |
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212 // SetPositionL |
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213 // --------------------------------------------------------------------------- |
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214 // |
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215 void |
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216 CCamSnapshot::SetPositionL( const TPoint& aPosition ) |
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217 { |
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218 iPosition = aPosition; |
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219 } |
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220 |
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221 |
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222 // --------------------------------------------------------------------------- |
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223 // IsSnapshotActive |
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224 // --------------------------------------------------------------------------- |
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225 // |
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226 TBool |
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227 CCamSnapshot::IsSnapshotActive() const |
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228 { |
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229 return iSnapshotOn; |
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230 } |
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231 |
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232 // --------------------------------------------------------------------------- |
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233 // StartSnapshot |
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234 // --------------------------------------------------------------------------- |
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235 // |
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236 void |
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237 CCamSnapshot::StartSnapshot() |
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238 { |
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239 iSnapshotOn = ETrue; |
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240 } |
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241 |
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242 |
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243 // --------------------------------------------------------------------------- |
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244 // StopSnapshot |
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245 // --------------------------------------------------------------------------- |
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246 // |
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247 void |
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248 CCamSnapshot::StopSnapshot() |
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249 { |
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250 iSnapshotOn = EFalse; |
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251 |
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252 iUseNextVfFrame = EFalse; |
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253 } |
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254 |
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255 |
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256 // --------------------------------------------------------------------------- |
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257 // SnapshotDataL |
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258 // --------------------------------------------------------------------------- |
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259 // |
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260 MCameraBuffer& |
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261 CCamSnapshot::SnapshotDataL( RArray<TInt>& aFrameIndexOrder ) |
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262 { |
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263 PRINT( _L("Camera => CCamSnapshot::SnapshotDataL") ); |
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264 |
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265 // Leave if not ready or other error. |
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266 User::LeaveIfError( iStatus ); |
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267 |
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268 if( !iSnapshotOn || !iSnapshotBitmap ) |
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269 { |
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270 User::Leave( KErrNotReady ); |
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271 } |
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272 |
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273 // Set the frame order |
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274 aFrameIndexOrder.Reset(); |
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275 User::LeaveIfError( aFrameIndexOrder.Append( 0 ) ); |
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276 |
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277 // Client *must* call Release() for the buffer |
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278 CCamBuffer* buffer = CCamBuffer::NewL( *iSnapshotBitmap, NULL ); |
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279 |
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280 PRINT( _L("Camera <= CCamSnapshot::SnapshotDataL") ); |
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281 return *buffer; |
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282 } |
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283 |
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284 |
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285 // =========================================================================== |
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286 // From MCamCameraObserver |
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287 |
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288 // --------------------------------------------------------------------------- |
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289 // |
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290 // --------------------------------------------------------------------------- |
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291 // |
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292 void |
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293 CCamSnapshot::HandleCameraEventL( TInt aStatus, |
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294 TCamCameraEventId aEventId, |
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295 TAny* aEventData /*= NULL*/ ) |
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296 { |
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297 if( iSnapshotOn ) |
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298 { |
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299 switch( aEventId ) |
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300 { |
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301 // --------------------------------------------------- |
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302 // Viewfinder frame ready event |
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303 // |
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304 case ECamCameraEventVfFrameReady: |
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305 { |
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306 if( iUseNextVfFrame ) |
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307 { |
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308 iUseNextVfFrame = EFalse; |
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309 |
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310 // Take the viewfinder frame just as it would be |
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311 // a still image, just in bitmap format. |
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312 PRINT( _L("Camera <> CCamSnapshot: Storing VF frame as snapshot") ); |
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313 |
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314 |
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315 // TEMP ==> |
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316 CCamBufferShare* share = NULL; |
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317 TRAPD( error, |
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318 { |
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319 if( KErrNone == aStatus ) |
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320 { |
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321 CFbsBitmap* bitmap = new (ELeave) CFbsBitmap; |
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322 CleanupStack::PushL( bitmap ); |
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323 User::LeaveIfError( bitmap->Duplicate( static_cast<CFbsBitmap*>( aEventData )->Handle() ) ); |
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324 |
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325 CCamBuffer* buffer = CCamBuffer::NewL( bitmap, NULL ); |
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326 CleanupStack::Pop( bitmap ); |
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327 |
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328 CleanupStack::PushL( buffer ); |
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329 share = new (ELeave) CCamBufferShare( buffer ); |
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330 CleanupStack::Pop( buffer ); |
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331 } |
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332 }); |
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333 if( KErrNone != error ) |
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334 { |
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335 aStatus = error; |
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336 } |
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337 if( share ) share->Reserve(); |
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338 // <== TEMP |
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339 |
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340 |
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341 StartSnapshotProcessing( share, aStatus ); |
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342 |
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343 // TEMP ==> |
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344 if( share ) share->Release(); |
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345 // <== TEMP |
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346 } |
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347 break; |
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348 } |
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349 // --------------------------------------------------- |
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350 // Image captured event |
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351 // |
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352 // Need to decode the snapshot from the image data. |
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353 case ECamCameraEventImageData: |
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354 { |
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355 if( !iVideoMode ) |
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356 { |
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357 PRINT( _L("Camera <> CCamSnapshot: Starting to decode snapshot") ); |
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358 CCamBufferShare* share = static_cast<CCamBufferShare*>( aEventData ); |
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359 StartSnapshotProcessing( share, aStatus ); |
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360 } |
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361 break; |
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362 } |
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363 // --------------------------------------------------- |
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364 // Video init might come before snapshot is |
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365 // initialized, so we do not rely on this event |
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366 // case ECamCameraEventVideoInit: |
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367 // { |
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368 // PRINT( _L("Camera <> CCamSnapshot: Video mode entered") ); |
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369 // break; |
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370 // } |
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371 // --------------------------------------------------- |
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372 case ECamCameraEventVideoRelease: |
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373 { |
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374 PRINT( _L("Camera <> CCamSnapshot: Video mode left") ); |
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375 iVideoMode = EFalse; |
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376 break; |
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377 } |
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378 // --------------------------------------------------- |
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379 // Video started event |
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380 // |
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381 // Use next vf frame as snapshot. |
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382 case ECamCameraEventVideoStart: |
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383 { |
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384 PRINT( _L("Camera <> CCamSnapshot: Video started, will use next VF frame as snapshot") ); |
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385 SetImageData( NULL ); |
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386 if( KErrNone == aStatus ) |
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387 { |
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388 iVideoMode = ETrue; |
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389 iUseNextVfFrame = ETrue; |
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390 } |
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391 break; |
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392 } |
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393 // --------------------------------------------------- |
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394 // Video stopped. |
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395 // |
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396 // Provide the vf frame as snapshot. |
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397 case ECamCameraEventVideoStop: |
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398 { |
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399 if( iVideoMode ) |
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400 { |
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401 PRINT( _L("Camera <> CCamSnapshot: Video stopped, provide the VF frame snapshot..") ); |
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402 |
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403 // Cancel any activity, if not ready for some reason. |
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404 if( iIdle ) iIdle->Cancel(); |
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405 if( iScaler ) iScaler->Cancel(); |
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406 if( iDecoder ) iDecoder->Cancel(); |
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407 |
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408 // Snapshot is in iSnapshotBitmap |
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409 SetImageData( NULL ); |
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410 |
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411 // Need to clear this flag as no events are notified |
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412 // when this flag is on. |
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413 iVideoMode = EFalse; |
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414 |
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415 PRINT( _L("Camera <> CCamSnapshot: Start snapshot callback") ); |
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416 iIdle->Start( TCallBack( SnapshotReadyCallback, this ) ); |
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417 } |
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418 break; |
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419 } |
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420 // --------------------------------------------------- |
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421 default: |
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422 { |
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423 // Other events ignored |
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424 break; |
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425 } |
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426 // --------------------------------------------------- |
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427 } |
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428 } |
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429 } |
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430 |
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431 |
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432 |
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433 |
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434 // =========================================================================== |
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435 // from MCamImageDecoderObserver |
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436 |
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437 // --------------------------------------------------------------------------- |
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438 // ImageDecodedL <<virtual>> |
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439 // --------------------------------------------------------------------------- |
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440 // |
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441 void |
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442 CCamSnapshot::ImageDecodedL( TInt aStatus, const CFbsBitmap* aBitmap, const CFbsBitmap* /*aMask*/ ) |
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443 { |
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444 PRINT1( _L("Camera => CCamSnapshot::ImageDecoded, status in: %d"), aStatus ); |
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445 if( iSnapshotOn ) |
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446 { |
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447 iStatus = aStatus; |
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448 |
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449 iSnapshotBitmap->Reset(); |
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450 |
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451 if( iStatus == KErrNone ) |
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452 { |
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453 iStatus = iSnapshotBitmap->Duplicate( aBitmap->Handle() ); |
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454 } |
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455 PRINT1( _L("Camera <> status after bitmap duplicate: %d"), iStatus ); |
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456 |
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457 // Release image data, as not used anymore. |
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458 // All that is needed is iSnapshotBitmap. |
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459 SetImageData( NULL ); |
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460 |
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461 if( iStatus == KErrNone ) |
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462 { |
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463 iScaler->StartScaling( *iSnapshotBitmap ); |
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464 } |
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465 else |
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466 { |
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467 iIdle->Start( TCallBack( SnapshotReadyCallback, this ) ); |
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468 } |
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469 } |
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470 PRINT( _L("Camera <= CCamSnapshot::ImageDecoded") ); |
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471 } |
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472 |
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473 // =========================================================================== |
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474 // from MCamBitmapScalerObserver |
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475 |
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476 // --------------------------------------------------------------------------- |
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477 // BitmapScaled <<virtual>> |
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478 // --------------------------------------------------------------------------- |
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479 // |
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480 void |
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481 CCamSnapshot::BitmapScaled( TInt aStatus, const CFbsBitmap* aBitmap ) |
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482 { |
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483 // Release any data we hold, as it's not needed anymore. |
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484 SetImageData( NULL ); |
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485 |
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486 if( iSnapshotOn ) |
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487 { |
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488 iStatus = aStatus; |
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489 iSnapshotBitmap->Reset(); |
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490 |
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491 if( KErrNone == iStatus ) |
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492 { |
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493 iStatus = iSnapshotBitmap->Duplicate( aBitmap->Handle() ); |
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494 } |
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495 |
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496 TECAMEvent event( KUidECamEventCameraSnapshot, iStatus ); |
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497 iObserver.HandleEvent( event ); |
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498 } |
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499 } |
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500 |
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501 |
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502 // =========================================================================== |
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503 // public new methods |
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504 |
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505 // --------------------------------------------------------------------------- |
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506 // StartSnapshotProcessing |
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507 // --------------------------------------------------------------------------- |
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508 // |
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509 void |
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510 CCamSnapshot::StartSnapshotProcessing( CCamBufferShare* aBuffer, |
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511 TInt aError ) |
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512 { |
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513 PRINT1( _L("Camera => CCamSnapshot::StartSnapshotProcessing, status in:%d"), aError ); |
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514 |
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515 if( iSnapshotOn ) |
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516 { |
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517 TRAP( iStatus, DoStartSnapshotProcessingL( aBuffer, aError ) ); |
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518 |
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519 if( iStatus != KErrNone ) |
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520 { |
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521 iIdle->Start( TCallBack( SnapshotReadyCallback, this ) ); |
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522 } |
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523 } |
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524 |
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525 PRINT1( _L("Camera <= CCamSnapshot::StartSnapshotProcessing, status out:%d"), aError ); |
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526 } |
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527 |
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528 |
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529 // --------------------------------------------------------------------------- |
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530 // SnapshotReadyCallback <<static>> |
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531 // --------------------------------------------------------------------------- |
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532 // |
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533 // static |
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534 TInt |
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535 CCamSnapshot::SnapshotReadyCallback( TAny* aSelf ) |
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536 { |
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537 PRINT( _L("Camera => CCamSnapshot::SnapshotReadyCallback <<static>>") ); |
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538 CCamSnapshot* self( static_cast<CCamSnapshot*>( aSelf ) ); |
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539 |
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540 if( !self->iVideoMode ) |
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541 { |
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542 TECAMEvent event( KUidECamEventCameraSnapshot, self->iStatus ); |
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543 self->iObserver.HandleEvent( event ); |
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544 } |
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545 else |
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546 { |
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547 // In video mode we must wait for the video stopped event |
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548 // even to report error. |
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549 PRINT( _L("Camera <> CCamSnapshot: Video mode, wait until video stopped.") ); |
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550 } |
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551 |
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552 PRINT( _L("Camera <= CCamSnapshot::SnapshotReadyCallback <<static>>") ); |
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553 return EFalse; |
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554 } |
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555 |
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556 |
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557 |
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558 // =========================================================================== |
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559 // private methods |
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560 |
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561 // --------------------------------------------------------------------------- |
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562 // DoStartSnapshotProcessingL |
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563 // |
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564 // Helper method for StartSnapshotProcessing. |
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565 // --------------------------------------------------------------------------- |
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566 // |
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567 void |
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568 CCamSnapshot::DoStartSnapshotProcessingL( CCamBufferShare* aBuffer, |
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569 TInt aError ) |
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570 { |
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571 PRINT1( _L("Camera => CCamSnapshot::DoStartSnapshotProcessingL, status in:%d"), aError ); |
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572 |
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573 // Cancel all ongoing activity. |
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574 iDecoder->Cancel(); |
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575 iScaler->Cancel(); |
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576 SetImageData( NULL ); // Release any old. |
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577 |
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578 // Check that we have the data needed. |
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579 CheckNonNullL( aBuffer, KErrNotFound ); |
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580 CheckNonNullL( aBuffer->SharedBuffer(), KErrNotFound ); |
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581 User::LeaveIfError( aError ); |
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582 |
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583 |
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584 SetImageData( aBuffer ); |
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585 MCameraBuffer* buffer = iImageData->SharedBuffer(); |
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586 |
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587 // First try to use bitmap data if available |
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588 TRAP( aError, |
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589 { |
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590 CFbsBitmap& bitmap = buffer->BitmapL( 0 ); |
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591 PRINT( _L("Camera <> Using bitmap data, just scale..") ); |
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592 // Simulate that the bitmap has been decoded now. |
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593 ImageDecodedL( aError, &bitmap, NULL ); |
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594 }); |
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595 |
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596 // If problems with bitmap data, try encoded data. |
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597 if( KErrNone != aError ) |
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598 { |
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599 PRINT( _L("Camera <> Using encoded data, decode first") ); |
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600 // If not able to use bitmap (or there is none), |
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601 // start converting bitmap from encoded image data. |
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602 TRAP( aError, iDecoder->StartConversionL( iImageData ) ); |
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603 } |
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604 |
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605 |
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606 // Neither of the formats could be used. |
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607 // Release the image data. |
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608 if( KErrNone != aError ) |
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609 { |
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610 SetImageData( NULL ); |
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611 User::Leave( aError ); |
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612 } |
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613 PRINT( _L("Camera <= CCamSnapshot::DoStartSnapshotProcessingL") ); |
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614 } |
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615 |
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616 |
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617 // --------------------------------------------------------------------------- |
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618 // Format2DisplayMode |
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619 // --------------------------------------------------------------------------- |
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620 // |
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621 TDisplayMode |
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622 CCamSnapshot::Format2DisplayMode( CCamera::TFormat aFormat ) const |
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623 { |
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624 switch( aFormat ) |
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625 { |
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626 case CCamera::EFormatFbsBitmapColor4K: return EColor4K; |
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627 case CCamera::EFormatFbsBitmapColor64K: return EColor64K; |
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628 case CCamera::EFormatFbsBitmapColor16M: return EColor16M; |
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629 case CCamera::EFormatFbsBitmapColor16MU: return EColor16MU; |
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630 default: return EColor16MU; |
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631 } |
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632 } |
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633 |
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634 |
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635 |
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636 // --------------------------------------------------------------------------- |
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637 // SetImageData |
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638 // |
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639 // Release old shared buffer (if any exists) and store pointer to new one and |
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640 // reserve it (if any provided). Can be used to just release any existing |
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641 // share with NULL parameter. |
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642 // --------------------------------------------------------------------------- |
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643 // |
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644 void |
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645 CCamSnapshot::SetImageData( CCamBufferShare* aImageData ) |
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646 { |
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647 if( iImageData ) |
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648 { |
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649 iImageData->Release(); |
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650 } |
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651 |
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652 iImageData = aImageData; |
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653 |
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654 if( iImageData ) |
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655 { |
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656 iImageData->Reserve(); |
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657 } |
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658 } |
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659 |
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660 |
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661 |
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662 // =========================================================================== |
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663 // private constructors |
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664 |
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665 // --------------------------------------------------------------------------- |
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666 // 2nd phase constructor |
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667 // --------------------------------------------------------------------------- |
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668 // |
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669 void |
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670 CCamSnapshot::ConstructL() |
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671 { |
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672 iSnapshotBitmap = new (ELeave) CFbsBitmap; |
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673 |
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674 iDecoder = CCamImageDecoder::NewL( *this ); |
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675 iScaler = CCamBitmapScaler::NewL( *this ); |
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676 |
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677 iIdle = CIdle::NewL( KCallbackPriority ); |
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678 } |
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679 |
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680 // --------------------------------------------------------------------------- |
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681 // 1st phase constructor |
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682 // --------------------------------------------------------------------------- |
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683 // |
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684 CCamSnapshot::CCamSnapshot( CCamera& aCamera, |
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685 MCameraObserver2& aObserver, |
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686 MCamCameraObservable& aObservable ) |
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687 : iObserver( aObserver ), |
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688 iObservable( aObservable ), |
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689 iCameraHandle( aCamera.Handle() ), |
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690 iSnapshotOn( EFalse ), |
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691 iStatus( KErrNotReady ) |
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692 { |
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693 } |
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694 |
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695 // end of file |
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