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1 /* |
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2 * Copyright (c) 2003,2004 Nokia Corporation and/or its subsidiary(-ies). |
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3 * All rights reserved. |
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4 * This component and the accompanying materials are made available |
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5 * under the terms of "Eclipse Public License v1.0" |
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6 * which accompanies this distribution, and is available |
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7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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8 * |
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9 * Initial Contributors: |
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10 * Nokia Corporation - initial contribution. |
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11 * |
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12 * Contributors: |
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13 * |
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14 * Description: Camera Application Engine still image burst class |
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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 |
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22 #include "CaeEngineImp.h" // For LOGTEXT |
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23 #include <fbs.h> // For CFbsBitmap |
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24 #include <hal.h> // For HAL |
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25 |
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26 #include "CaeStillBurst.h" // Still image burst capturing class. |
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27 #include "CaeImageItem.h" // Still image item class. |
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28 |
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29 |
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30 // CONSTANTS |
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31 const TInt KCaeStillBurstImageQueueGranularity = 6; |
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32 const TInt KCaeMinImageHeapSize = 0; |
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33 |
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34 // ============================ MEMBER FUNCTIONS =============================== |
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35 |
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36 |
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37 // ----------------------------------------------------------------------------- |
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38 // CCaeStillBurst::NewL |
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39 // ----------------------------------------------------------------------------- |
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40 // |
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41 CCaeStillBurst* CCaeStillBurst::NewL() |
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42 { |
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43 LOGTEXT( _L( "Cae: CCaeStillBurst::NewL() entering" ) ); |
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44 |
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45 CCaeStillBurst* self = new( ELeave ) CCaeStillBurst; |
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46 |
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47 CleanupStack::PushL( self ); |
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48 self->ConstructL(); |
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49 CleanupStack::Pop( self ); |
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50 |
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51 LOGTEXT( _L( "Cae: CCaeStillBurst::NewL() returning" ) ); |
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52 |
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53 return self; |
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54 } |
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55 |
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56 |
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57 // ----------------------------------------------------------------------------- |
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58 // CCaeStillBurst::~CCaeStillBurst |
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59 // Destroys image queue. |
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60 // ----------------------------------------------------------------------------- |
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61 // |
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62 CCaeStillBurst::~CCaeStillBurst() |
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63 { |
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64 LOGTEXT( _L( "Cae: CCaeStillBurst::~CCaeStillBurst() entering" ) ); |
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65 |
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66 ResetAndDestroyImages(); |
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67 |
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68 if ( iImageHeap ) |
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69 { |
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70 iImageHeap->Close(); |
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71 } |
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72 |
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73 delete iImageQueue; |
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74 |
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75 LOGTEXT( _L( "Cae: CCaeStillBurst::~CCaeStillBurst() returning" ) ); |
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76 } |
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77 |
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78 |
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79 // ----------------------------------------------------------------------------- |
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80 // CCaeStillBurst::CCaeStillBurst |
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81 // ----------------------------------------------------------------------------- |
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82 // |
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83 CCaeStillBurst::CCaeStillBurst() |
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84 { |
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85 } |
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86 |
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87 |
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88 // ----------------------------------------------------------------------------- |
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89 // CCaeStillBurst::ConstructL |
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90 // Allocates image queue. |
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91 // ----------------------------------------------------------------------------- |
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92 // |
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93 void CCaeStillBurst::ConstructL() |
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94 { |
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95 LOGTEXT2( _L( "Cae: CCaeStillBurst::ConstructL() entering, min heap: %d" ), KCaeMinImageHeapSize ); |
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96 |
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97 iImageQueue = new( ELeave ) RPointerArray<CCaeImageItem>( |
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98 KCaeStillBurstImageQueueGranularity ); |
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99 |
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100 TInt maxMem; |
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101 User::LeaveIfError( HAL::Get( HAL::EMemoryRAM, maxMem ) ); |
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102 #if (defined (__WINS__) || defined (__WINSCW__)) |
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103 maxMem /= 2; // Fix emulator -4 error |
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104 #endif |
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105 |
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106 iImageHeap = User::ChunkHeap( NULL, KCaeMinImageHeapSize, maxMem ); |
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107 |
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108 #ifdef _DEBUG |
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109 if ( !iImageHeap ) |
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110 { |
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111 LOGTEXT( _L( "Cae: CCaeStillBurst::ConstructL() Error: Cannot create iImageHeap !" ) ); |
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112 } |
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113 #endif |
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114 |
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115 User::LeaveIfNull( iImageHeap ); |
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116 |
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117 LOGTEXT( _L( "Cae: CCaeStillBurst::ConstructL() returning" ) ); |
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118 } |
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119 |
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120 |
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121 |
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122 // ----------------------------------------------------------------------------- |
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123 // CCaeStillBurst::SetLengthL |
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124 // ----------------------------------------------------------------------------- |
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125 // |
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126 void CCaeStillBurst::SetLengthL( |
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127 TInt aLength ) |
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128 { |
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129 LOGTEXT2( _L( "Cae: CCaeStillBurst::SetLengthL(): length: %d" ), aLength ); |
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130 |
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131 // Leave if not supported. |
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132 if ( aLength < 1 ) |
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133 { |
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134 LOGTEXT( _L( "Cae: CCaeStillBurst::SetLengthL(): leaving KErrArgument" )); |
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135 User::Leave( KErrArgument ); |
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136 } |
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137 |
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138 iDesiredLength = aLength; |
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139 } |
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140 |
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141 |
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142 // ----------------------------------------------------------------------------- |
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143 // CCaeStillBurst::Length |
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144 // ----------------------------------------------------------------------------- |
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145 // |
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146 TInt CCaeStillBurst::Length() const |
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147 { |
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148 LOGTEXT2( _L( "Cae: CCaeStillBurst::Length(): length: %d" ), iDesiredLength ); |
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149 |
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150 return iDesiredLength; |
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151 } |
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152 |
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153 |
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154 // ----------------------------------------------------------------------------- |
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155 // CCaeStillBurst::AppendImage |
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156 // Appends an image item object to image queue. |
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157 // ----------------------------------------------------------------------------- |
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158 // |
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159 TInt CCaeStillBurst::AppendImage( |
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160 CFbsBitmap* aBitmap, |
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161 HBufC8* aImageData, |
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162 TInt aError ) |
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163 { |
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164 LOGTEXT2( _L( "Cae: CCaeStillBurst::AppendImage() entering: %d" ), aError ); |
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165 |
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166 TInt result( KErrNone ); |
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167 |
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168 CCaeImageItem* imageItem = new CCaeImageItem( *iImageHeap ); |
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169 if ( imageItem ) |
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170 { |
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171 if (aImageData) |
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172 { |
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173 // Copy image data from HBufC8 to image heap |
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174 imageItem->iImageData = iImageHeap->Alloc( aImageData->Size() ); |
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175 if ( imageItem->iImageData ) |
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176 { |
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177 imageItem->iImageDataSize = aImageData->Size(); |
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178 Mem::Copy( imageItem->iImageData, aImageData->Ptr(), |
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179 imageItem->iImageDataSize ); |
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180 } |
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181 else |
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182 { |
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183 result = KErrNoMemory; |
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184 } |
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185 } |
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186 if ( result == KErrNone ) |
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187 { |
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188 imageItem->iBitmap = aBitmap; |
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189 imageItem->iError = aError; |
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190 // Add image to the queue. |
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191 result = iImageQueue->Append( imageItem ); |
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192 } |
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193 if ( result == KErrNone ) |
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194 { |
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195 iCountOfBurstAppends++; |
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196 LOGTEXT2( _L( "Cae: CCaeStillBurst::AppendImage(): count of burst appends = %d" ), iCountOfBurstAppends ); |
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197 |
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198 // Given aImageData can be deleted now as it has successfully |
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199 // been copied to imageItem->iImageData |
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200 delete aImageData; |
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201 } |
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202 else |
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203 { |
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204 // Do not delete the bitmap if error, delete just imageItem |
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205 // which deletes also iImageData. |
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206 imageItem->iBitmap = NULL; |
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207 delete imageItem; |
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208 imageItem = NULL; |
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209 } |
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210 } |
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211 else |
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212 { |
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213 result = KErrNoMemory; |
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214 } |
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215 |
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216 LOGTEXT( _L( "Cae: CCaeStillBurst::AppendImage() returning" ) ); |
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217 |
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218 return result; |
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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 // CCaeStillBurst::CaptureCount |
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224 // ----------------------------------------------------------------------------- |
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225 // |
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226 TInt CCaeStillBurst::CaptureCount() const |
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227 { |
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228 // Return the count of appends (captures) made. |
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229 return iCountOfBurstAppends; |
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230 } |
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231 |
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232 |
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233 // ----------------------------------------------------------------------------- |
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234 // CCaeStillBurst::ImageCount |
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235 // ----------------------------------------------------------------------------- |
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236 // |
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237 TInt CCaeStillBurst::ImageCount() const |
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238 { |
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239 // Return the count of image items. |
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240 return iImageQueue->Count(); |
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241 } |
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242 |
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243 |
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244 // ----------------------------------------------------------------------------- |
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245 // CCaeStillBurst::GetNextImage |
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246 // Fetches and deletes the next image from image queue. |
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247 // ----------------------------------------------------------------------------- |
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248 // |
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249 TInt CCaeStillBurst::GetNextImage( |
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250 CFbsBitmap*& aBitmap, // output |
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251 HBufC8*& aImageData, // output |
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252 TInt& aError ) // output |
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253 { |
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254 LOGTEXT2( _L( "Cae: CCaeStillBurst::GetNextImage() entering, %d images in queue" ), iImageQueue->Count() ); |
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255 |
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256 TInt error( KErrNone ); |
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257 |
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258 if ( iImageQueue->Count() > 0 ) |
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259 { |
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260 |
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261 if ( (*iImageQueue)[0]->iImageData ) |
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262 { |
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263 // Copy image data from queue image item. |
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264 aImageData = HBufC8::New( (*iImageQueue)[0]->iImageDataSize ); |
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265 if ( aImageData ) |
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266 { |
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267 aImageData->Des().Copy( (TUint8*)(*iImageQueue)[0]->iImageData, |
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268 (*iImageQueue)[0]->iImageDataSize ); |
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269 } |
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270 else |
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271 { |
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272 error = KErrNoMemory; |
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273 } |
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274 } |
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275 |
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276 if ( error == KErrNone ) |
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277 { |
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278 // Get bitmap pointer and image error value from the queue image item. |
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279 aBitmap = (*iImageQueue)[0]->iBitmap; |
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280 aError = (*iImageQueue)[0]->iError; |
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281 |
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282 #ifdef _DEBUG |
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283 if ( aError ) |
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284 { |
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285 LOGTEXT2( _L( "Cae: CCaeStillBurst::GetNextImage(): This image has error: %d" ), aError ); |
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286 } |
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287 #endif |
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288 |
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289 // Do not delete the bitmap. Delete the image item which deletes iImageData also. |
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290 (*iImageQueue)[0]->iBitmap = NULL; |
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291 delete (*iImageQueue)[0]; |
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292 iImageQueue->Remove( 0 ); |
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293 } |
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294 |
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295 if ( ( iImageQueue->Count() == 0 ) || error ) |
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296 { |
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297 // Give free memory to system from the top of heap. |
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298 iImageHeap->Compress(); |
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299 LOGTEXT( _L( "Cae: CCaeStillBurst::GetNextImage(): last image fetched, compressed the heap" ) ); |
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300 MEM(); |
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301 } |
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302 } |
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303 else |
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304 { |
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305 aBitmap = NULL; |
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306 aImageData = NULL; |
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307 error = KErrUnderflow; |
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308 } |
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309 |
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310 LOGTEXT2( _L( "Cae: CCaeStillBurst::GetNextImage() returning: %d" ), error ); |
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311 |
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312 return error; |
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313 } |
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314 |
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315 |
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316 // ----------------------------------------------------------------------------- |
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317 // CCaeStillBurst::IsBurstCaptured |
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318 // ----------------------------------------------------------------------------- |
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319 // |
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320 TBool CCaeStillBurst::IsBurstCaptured() const |
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321 { |
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322 TBool isComplete( EFalse ); |
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323 if ( iCountOfBurstAppends >= iDesiredLength ) |
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324 { |
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325 isComplete = ETrue; |
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326 } |
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327 return isComplete; |
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328 } |
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329 |
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330 |
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331 // ----------------------------------------------------------------------------- |
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332 // CCaeStillBurst::ResetAndDestroyImages() |
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333 // Reset and destroy image queue. |
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334 // ----------------------------------------------------------------------------- |
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335 // |
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336 void CCaeStillBurst::ResetAndDestroyImages() |
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337 { |
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338 LOGTEXT( _L( "Cae: CCaeStillBurst::ResetAndDestroyImages()" ) ); |
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339 |
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340 if ( iImageQueue ) |
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341 { |
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342 // Reset and destroy the image items from queue. |
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343 iImageQueue->ResetAndDestroy(); |
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344 } |
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345 if ( iImageHeap ) |
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346 { |
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347 iImageHeap->Compress(); // Give free memory to system from the top of heap |
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348 } |
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349 iCountOfBurstAppends = 0; |
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350 } |
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351 |
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352 |
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353 // End of File |