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1 /* |
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2 * Copyright (c) 2003 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: Still Image Decoder for Camera Application Engine |
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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 <eikenv.h> |
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22 |
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23 #include "CaeStillConverter.h" |
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24 #include "CaeStillDecoder.h" |
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25 #include "CaeStillCommon.h" |
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26 |
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27 #ifdef CAE_TEST_VERSION |
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28 #include "CaeStillConverterTestErrors.h" |
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29 #endif |
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30 |
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31 |
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32 // ================= MEMBER FUNCTIONS ======================= |
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33 |
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34 |
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35 // --------------------------------------------------------- |
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36 // CCaeStillDecoder::NewL |
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37 // Two-phased constructor. |
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38 // --------------------------------------------------------- |
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39 // |
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40 EXPORT_C CCaeStillDecoder* CCaeStillDecoder::NewL() |
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41 { |
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42 CCaeStillDecoder* self = new( ELeave ) CCaeStillDecoder; |
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43 CleanupStack::PushL( self ); |
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44 self->ConstructL(); |
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45 CleanupStack::Pop( self ); |
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46 return self; |
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47 } |
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48 |
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49 |
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50 // --------------------------------------------------------- |
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51 // CCaeStillDecoder::~CCaeStillDecoder |
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52 // Destructor. |
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53 // --------------------------------------------------------- |
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54 // |
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55 EXPORT_C CCaeStillDecoder::~CCaeStillDecoder() |
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56 { |
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57 delete iDecoder; |
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58 delete iDecodedImage; |
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59 iFs.Close(); |
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60 |
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61 // For RTRT code coverage analysis. |
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62 // #pragma attol insert _ATCPQ_DUMP(0); |
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63 } |
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64 |
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65 |
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66 // --------------------------------------------------------- |
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67 // CCaeStillDecoder::SetObserver |
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68 // Sets Still Decoder observer. |
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69 // --------------------------------------------------------- |
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70 // |
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71 EXPORT_C void CCaeStillDecoder::SetObserver( |
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72 MCaeStillDecoderObserver* aObserver ) |
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73 { |
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74 iObserver = aObserver; |
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75 } |
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76 |
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77 |
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78 // ----------------------------------------------------------------------------- |
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79 // CCaeStillDecoder::SetImageCodecL |
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80 // Sets the specific image codec implementation to be used in decoding. |
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81 // ----------------------------------------------------------------------------- |
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82 // |
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83 void CCaeStillDecoder::SetImageCodecL( |
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84 TUid aCodecUid ) |
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85 { |
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86 iImageCodecUid = aCodecUid; |
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87 } |
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88 |
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89 |
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90 // --------------------------------------------------------- |
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91 // CCaeStillDecoder::ConvertHBufC8ToCFbsBitmapL |
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92 // Creates CImageItem object, places it in the internal |
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93 // queue and starts memory image to bitmap conversion. |
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94 // --------------------------------------------------------- |
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95 // |
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96 EXPORT_C void CCaeStillDecoder::ConvertHBufC8ToCFbsBitmapL( |
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97 HBufC8* aImageBuffer, |
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98 TDisplayMode aTargetBitmapMode, |
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99 const TSize& aTargetBitmapSize, |
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100 const TSize& aFullyScaledTargetBitmapSize ) |
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101 { |
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102 LOGTEXT( _L( "Cae: CCaeStillDecoder::ConvertHBufC8ToCFbsBitmapL() entering" ) ); |
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103 |
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104 CleanupStack::PushL( aImageBuffer ); |
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105 |
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106 // Create image item and set up image data. |
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107 |
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108 CImageItem* imageItem = new( ELeave ) CImageItem; |
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109 imageItem->iBitmapDisplayMode = aTargetBitmapMode; |
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110 imageItem->iImageBuffer = aImageBuffer; |
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111 imageItem->iBitmapSize = aTargetBitmapSize; |
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112 imageItem->iFullyScaledBitmapSize = aFullyScaledTargetBitmapSize; |
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113 CleanupStack::Pop( aImageBuffer ); |
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114 CleanupStack::PushL( imageItem ); |
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115 |
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116 #ifdef CAE_TEST_VERSION |
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117 // For simulating errors when compiled as special "test version". |
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118 CaeConvertHBufC8ToCFbsBitmapErrorL(); |
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119 #endif |
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120 |
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121 // Add image to the queue. |
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122 User::LeaveIfError ( iImageQueue->Append( imageItem ) ); |
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123 |
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124 CleanupStack::Pop( imageItem ); |
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125 |
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126 // Start image conversion if not busy. Busy means that e.g. conversion is currently running. |
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127 if ( !IsBusy() ) |
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128 { |
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129 TRAPD( error, ConvertL() ); |
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130 if ( error != KErrNone ) |
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131 { |
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132 ConversionComplete( error ); |
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133 } |
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134 } |
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135 |
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136 LOGTEXT( _L( "Cae: CCaeStillDecoder::ConvertHBufC8ToCFbsBitmapL() returning" ) ); |
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137 } |
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138 |
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139 |
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140 // --------------------------------------------------------- |
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141 // CCaeStillDecoder::Cleanup |
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142 // Destroy all allocations. |
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143 // --------------------------------------------------------- |
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144 // |
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145 EXPORT_C void CCaeStillDecoder::Cleanup() |
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146 { |
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147 if ( iDecoder ) |
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148 { |
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149 iDecoder->Cancel(); |
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150 delete iDecoder; |
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151 iDecoder = NULL; |
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152 } |
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153 |
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154 if ( iState != EIdle ) |
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155 { |
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156 delete iDecodedImage; |
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157 iDecodedImage = NULL; |
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158 } |
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159 |
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160 if ( iImageQueue ) |
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161 { |
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162 iImageQueue->ResetAndDestroy(); |
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163 } |
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164 } |
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165 |
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166 |
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167 // --------------------------------------------------------- |
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168 // CCaeStillDecoder::CCaeStillDecoder |
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169 // Default constructor. |
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170 // This can NOT leave. |
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171 // --------------------------------------------------------- |
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172 // |
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173 CCaeStillDecoder::CCaeStillDecoder() |
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174 { |
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175 CActiveScheduler::Add( this ); |
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176 } |
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177 |
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178 |
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179 // --------------------------------------------------------- |
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180 // CCaeStillDecoder::ConstructL |
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181 // Symbian 2nd phase constructor that can leave. |
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182 // --------------------------------------------------------- |
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183 // |
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184 void CCaeStillDecoder::ConstructL() |
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185 { |
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186 CCaeStillConverter::ConstructL(); |
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187 User::LeaveIfError( iFs.Connect() ); |
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188 } |
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189 |
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190 |
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191 // --------------------------------------------------------- |
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192 // CCaeStillDecoder::DoCancel |
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193 // From CActive, implements cancellation of an outstanding request. |
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194 // --------------------------------------------------------- |
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195 // |
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196 void CCaeStillDecoder::DoCancel() |
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197 { |
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198 Cleanup(); |
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199 iState = EIdle; |
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200 } |
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201 |
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202 |
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203 // --------------------------------------------------------- |
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204 // CCaeStillDecoder::ConvertL |
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205 // Converts bitmap to memory JPEG image. |
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206 // --------------------------------------------------------- |
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207 // |
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208 void CCaeStillDecoder::ConvertL() |
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209 { |
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210 LOGTEXT( _L( "Cae: CCaeStillDecoder::ConvertL() entering" ) ); |
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211 |
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212 iState = EConvert; |
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213 |
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214 // Use the default codec or the specific codec |
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215 iDecoder = CImageDecoder::DataNewL( iFs, *(*iImageQueue)[0]->iImageBuffer, |
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216 CImageDecoder::EOptionNone, KNullUid, KNullUid, iImageCodecUid ); |
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217 |
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218 iDecodedImage = NULL; |
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219 iDecodedImage = new( ELeave ) CFbsBitmap; |
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220 |
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221 // Set target bitmap size |
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222 TSize targetBitmapSize = (*iImageQueue)[0]->iBitmapSize; |
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223 |
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224 const TFrameInfo& frameInfo = iDecoder->FrameInfo( 0 ); |
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225 TUid impUid = iDecoder->ImplementationUid(); |
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226 LOGTEXT3( _L( "Cae: CCaeStillDecoder::ConvertL() Requested decoder: %x, Found decoder: %x" ), iImageCodecUid.iUid, impUid.iUid ); |
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227 LOGTEXT2( _L( "Cae: CCaeStillDecoder::ConvertL() Free scaling support: %d" ), frameInfo.iFlags & TFrameInfo::EFullyScaleable ); |
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228 |
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229 // |
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230 // Use free scaling always with special decoder or with any decoder that supports it |
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231 // |
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232 if ( (( impUid == KUidSpecialFreeScalingDecoder ) || ( frameInfo.iFlags & TFrameInfo::EFullyScaleable )) |
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233 && ( (*iImageQueue)[0]->iFullyScaledBitmapSize != TSize( 0, 0 ) ) ) |
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234 { |
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235 LOGTEXT( _L( "Cae: CCaeStillDecoder::ConvertL(). Use free scaling in decoding" ) ); |
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236 targetBitmapSize = (*iImageQueue)[0]->iFullyScaledBitmapSize; |
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237 } |
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238 |
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239 User::LeaveIfError( iDecodedImage->Create( |
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240 targetBitmapSize, |
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241 (*iImageQueue)[0]->iBitmapDisplayMode ) ); |
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242 |
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243 #ifdef CAE_TEST_VERSION |
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244 // For simulating errors when compiled as special "test version". |
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245 CaeStillConvertErrorL(); |
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246 #endif |
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247 |
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248 iState = EConvert; |
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249 iStatus = KRequestPending; |
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250 iDecoder->Convert( &iStatus, *iDecodedImage ); |
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251 SetActive(); |
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252 |
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253 LOGTEXT( _L( "Cae: CCaeStillDecoder::ConvertL() returning" ) ); |
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254 } |
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255 |
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256 |
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257 // --------------------------------------------------------- |
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258 // CCaeStillDecoder::ConversionComplete |
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259 // Perfoms necessary cleanup and delivers result to the client. |
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260 // --------------------------------------------------------- |
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261 // |
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262 void CCaeStillDecoder::ConversionComplete( |
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263 TInt aError ) |
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264 { |
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265 LOGTEXT( _L( "Cae: CCaeStillDecoder::ConversionComplete() entering" ) ); |
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266 #ifdef _DEBUG |
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267 if ( aError ) |
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268 { |
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269 LOGTEXT( _L( "Cae: CCaeStillDecoder::ConversionComplete(): error detected" ) ); |
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270 } |
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271 #endif |
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272 |
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273 // Delete the decoder object and image queue item |
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274 if ( iDecoder ) |
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275 { |
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276 iDecoder->Cancel(); |
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277 delete iDecoder; |
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278 iDecoder = NULL; |
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279 } |
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280 |
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281 // To be outputted via call-back. |
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282 HBufC8* imageBuffer = NULL; |
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283 |
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284 if ( iImageQueue->Count() > 0 ) |
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285 { |
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286 imageBuffer = (*iImageQueue)[0]->iImageBuffer; |
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287 |
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288 (*iImageQueue)[0]->iImageBuffer = NULL; // Prevent deletion of source image. |
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289 delete ( *iImageQueue )[0]; |
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290 |
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291 // Remove item pointer from the queue and compress the queue. |
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292 iImageQueue->Remove( 0 ); // Remove item pointer from the queue and compress the queue. |
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293 } |
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294 |
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295 iState = EIdle; |
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296 |
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297 const TInt KZeroImageSize = 0; // Image size argument currently not in use. |
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298 |
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299 // Call back the client to deliver the result image. Gives away the ownership of the imageBuffer |
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300 // and iDecodedImage. |
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301 iObserver->McaesdoCFbsBitmapImageReady( imageBuffer, iDecodedImage, aError, KZeroImageSize ); |
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302 iDecodedImage = NULL; // Ownership has been given away |
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303 |
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304 LOGTEXT( _L( "Cae: CCaeStillDecoder::ConversionComplete() returning" ) ); |
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305 } |
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306 |
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307 |
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308 // End of File |