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1 /* |
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2 * Copyright (c) 2010 Ixonos Plc. |
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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 the "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 * Ixonos Plc |
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14 * |
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15 * Description: |
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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 <fbs.h> |
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21 #include "CFilterJpegSource.h" |
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22 #include "JpegLoadFactory.h" |
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23 #include "MJpegLoad.h" |
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24 |
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25 const TInt KBlockBufferSize = 256; // should be enough for every picture... |
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26 const TInt KScaleBits = 12; |
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27 const TInt KDestBufferMaxDim = 352; |
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28 |
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29 //============================================================================= |
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30 EXPORT_C TInt CFilterJpegSource::Create() |
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31 { |
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32 CFilterJpegSource* ptr = NULL; |
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33 TRAPD( error, ptr = NewL(); ); |
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34 if( error != KErrNone ) |
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35 { |
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36 ptr = NULL; |
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37 } |
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38 return (TInt)((MImageFilter*)ptr); |
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39 } |
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40 |
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41 //============================================================================= |
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42 CFilterJpegSource* CFilterJpegSource::NewL() |
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43 { |
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44 CFilterJpegSource* self = new( ELeave )CFilterJpegSource(); |
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45 CleanupStack::PushL( self ); |
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46 self->ConstructL(); |
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47 CleanupStack::Pop( self ); |
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48 return self; |
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49 } |
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50 |
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51 //============================================================================= |
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52 CFilterJpegSource::~CFilterJpegSource() |
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53 { |
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54 delete iJpeg; |
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55 delete iDestBuffer; |
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56 delete[] iIndexMap; |
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57 if ( iBlockBuffer ) |
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58 { |
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59 for (TInt i = 0; i < KBlockBufferSize; ++i) |
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60 { |
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61 delete iBlockBuffer[i]; |
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62 iBlockBuffer[i] = NULL; |
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63 } |
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64 } |
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65 delete[] iBlockBuffer; |
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66 iBlockBuffer = NULL; |
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67 } |
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68 |
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69 //============================================================================= |
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70 CFilterJpegSource::CFilterJpegSource() |
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71 { |
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72 |
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73 } |
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74 |
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75 //============================================================================= |
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76 void CFilterJpegSource::ConstructL() |
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77 { |
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78 |
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79 } |
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80 |
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81 //============================================================================= |
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82 TRect CFilterJpegSource::Rect() |
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83 { |
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84 if (iOutputState == EDirect) |
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85 { |
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86 return iRect; |
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87 } |
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88 else |
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89 { |
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90 return iScaledRect; |
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91 } |
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92 } |
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93 |
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94 //============================================================================= |
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95 TReal CFilterJpegSource::Scale() |
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96 { |
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97 if (iOutputState == EDirect) |
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98 { |
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99 return 1.0; |
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100 } |
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101 else |
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102 { |
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103 return iRelScale; |
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104 } |
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105 } |
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106 |
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107 //============================================================================= |
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108 TSize CFilterJpegSource::ViewPortSize() |
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109 { |
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110 return iFullSize; |
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111 } |
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112 |
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113 //============================================================================= |
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114 TBlock * CFilterJpegSource::GetBlockL ( const TRect & aRect ) |
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115 { |
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116 if (iOutputState == EBuffer) |
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117 { |
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118 if ( !aRect.Intersects(iScaledRect) ) |
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119 { |
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120 return NULL; |
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121 } |
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122 TRect rect = aRect; |
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123 rect.Intersection(iScaledRect); |
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124 |
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125 TBlock * pB = new (ELeave) TBlock (rect); |
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126 |
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127 TUint32 * pS = iDestBuffer + (rect.iTl.iY - iScaledRect.iTl.iY) * iDestSize.iWidth + |
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128 (rect.iTl.iX - iScaledRect.iTl.iX); |
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129 TUint32 * pD = pB->iData; |
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130 |
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131 for (TInt i = rect.iTl.iY; i < rect.iBr.iY; ++i) |
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132 { |
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133 Mem::Copy(pD, pS, pB->iWidth * sizeof(TUint32)); |
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134 pD += pB->iWidth; |
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135 pS += iDestSize.iWidth; |
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136 } |
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137 return pB; |
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138 } |
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139 else |
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140 { |
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141 |
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142 if (!aRect.Intersects(iRect)) |
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143 { |
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144 return NULL; |
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145 } |
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146 |
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147 // Clip rectangle to image |
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148 TRect rect = aRect; |
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149 rect.Intersection(iRect); |
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150 |
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151 // Compute region of interest in blocks |
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152 TRect blockRect = rect; |
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153 blockRect.iTl.iX /= iBlockSize.iWidth; |
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154 blockRect.iTl.iY /= iBlockSize.iHeight; |
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155 blockRect.iBr.iX /= iBlockSize.iWidth; |
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156 blockRect.iBr.iY /= iBlockSize.iHeight; |
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157 |
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158 if (blockRect.iBr.iX < iSizeInBlocks.iWidth) |
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159 { |
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160 blockRect.iBr.iX++; |
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161 } |
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162 if (blockRect.iBr.iY < iSizeInBlocks.iHeight) |
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163 { |
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164 blockRect.iBr.iY++; |
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165 } |
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166 |
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167 // Create block for pixel data |
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168 TBlock * pB = new (ELeave) TBlock; |
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169 CleanupStack::PushL(pB); |
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170 pB->iRect = blockRect; |
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171 pB->iRect.iTl.iX *= iBlockSize.iWidth; |
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172 pB->iRect.iTl.iY *= iBlockSize.iHeight; |
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173 pB->iRect.iBr.iX *= iBlockSize.iWidth; |
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174 pB->iRect.iBr.iX += iBlockSize.iWidth; |
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175 pB->iRect.iBr.iY *= iBlockSize.iHeight; |
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176 pB->iRect.iBr.iY += iBlockSize.iHeight; |
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177 pB->iWidth = (pB->iRect.iBr.iX - pB->iRect.iTl.iX); |
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178 pB->iHeight = (pB->iRect.iBr.iY - pB->iRect.iTl.iY); |
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179 pB->iDataLength = pB->iWidth * pB->iHeight; |
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180 pB->iData = new (ELeave) TUint32 [pB->iDataLength]; |
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181 |
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182 // Read all blocks in region of interest |
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183 for (TInt i = blockRect.iTl.iY; i < blockRect.iBr.iY; ++i) |
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184 { |
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185 |
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186 for (TInt j = blockRect.iTl.iX; j < blockRect.iBr.iX; ++j) |
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187 { |
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188 |
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189 // Get block index |
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190 TInt index = i * iSizeInBlocks.iWidth + j; |
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191 |
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192 // If not found, load new block, add to cache and update index table |
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193 if ( iIndexMap[index] < 0 ) |
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194 { |
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195 |
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196 // Load block |
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197 TBlockEntry * e = new (ELeave) TBlockEntry; |
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198 CleanupStack::PushL(e); |
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199 e->iRect = TRect ( TPoint (j * iBlockSize.iWidth, i * iBlockSize.iHeight), iBlockSize); |
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200 e->iBitmap = iJpeg->LoadBlockL (TPoint(j,i)); |
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201 |
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202 // Remove index of the oldest block from the map |
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203 if (iBlockBuffer [iOldestBlock]) |
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204 { |
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205 TPoint blockPos = iBlockBuffer[iOldestBlock]->iRect.iTl; |
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206 blockPos.iX /= iBlockSize.iWidth; |
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207 blockPos.iY /= iBlockSize.iHeight; |
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208 iIndexMap[blockPos.iY * iSizeInBlocks.iWidth + blockPos.iX] = -1; |
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209 |
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210 // Delete oldest block |
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211 delete iBlockBuffer [iOldestBlock]; |
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212 iBlockBuffer [iOldestBlock] = NULL; |
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213 } |
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214 |
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215 // Insert new block to buffer and update map |
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216 iBlockBuffer[iOldestBlock] = e; |
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217 iIndexMap[index] = iOldestBlock; |
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218 CleanupStack::Pop(e); |
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219 |
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220 // Update old block index |
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221 iOldestBlock++; |
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222 if (iOldestBlock >= KBlockBufferSize) iOldestBlock = 0; |
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223 |
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224 } |
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225 |
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226 // Store pixel data to block |
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227 TUint32 * pS = (TUint32*)( iBlockBuffer[ iIndexMap[index] ]->iBitmap.iData ); |
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228 TUint32 * pD = |
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229 pB->iData + |
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230 (i - blockRect.iTl.iY) * iBlockSize.iHeight * pB->iWidth + |
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231 (j - blockRect.iTl.iX) * iBlockSize.iWidth; |
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232 for (TInt ib = 0; ib < iBlockSize.iHeight; ++ib) |
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233 { |
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234 Mem::Copy (pD, pS, iBlockSize.iWidth * sizeof(TUint32)); |
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235 pS += iBlockSize.iWidth; |
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236 pD += pB->iWidth; |
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237 } |
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238 } |
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239 } |
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240 CleanupStack::Pop( pB ); |
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241 return pB; |
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242 } |
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243 } |
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244 |
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245 |
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246 //============================================================================= |
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247 void CFilterJpegSource::SetParent( MImageFilter* aParent ) |
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248 { |
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249 iParent = aParent; |
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250 } |
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251 |
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252 //============================================================================= |
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253 void CFilterJpegSource::SetChild( MImageFilter* aChild ) |
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254 { |
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255 iChild = aChild; |
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256 } |
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257 |
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258 //============================================================================= |
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259 TInt CFilterJpegSource::CmdL( const TDesC16& aCmd ) |
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260 { |
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261 |
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262 TLex lex( aCmd ); |
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263 |
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264 while( ! lex.Eos() ) |
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265 { |
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266 |
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267 TPtrC token = lex.NextToken(); |
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268 if( token.Compare( _L("file") ) == 0 ) |
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269 { |
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270 iFileName.Zero(); |
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271 |
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272 // Find the start of the string |
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273 while (!lex.Eos()) |
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274 { |
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275 if (lex.Get() == '"') break; |
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276 } |
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277 |
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278 // Get the text data |
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279 while (!lex.Eos()) |
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280 { |
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281 TChar c= lex.Get(); |
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282 if (c == '"') |
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283 { |
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284 break; |
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285 } |
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286 else |
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287 { |
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288 iFileName.Append(c); |
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289 } |
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290 } |
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291 } |
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292 else if( token.Compare( _L("loadimage") ) == 0 ) |
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293 { |
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294 |
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295 delete iJpeg; |
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296 iJpeg = 0; |
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297 iJpeg = JpegLoadFactory::CreateJpegLoadL(); |
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298 |
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299 // open |
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300 iJpeg->OpenL( iFileName ); |
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301 iJpeg->ScanRandomL(); |
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302 |
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303 const TJpegData & d = iJpeg->Info(); |
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304 |
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305 // set crop rectangle to full image size |
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306 if (iRect.Size() == TSize(0,0)) |
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307 { |
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308 iRect.iTl.iX = 0; |
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309 iRect.iTl.iY = 0; |
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310 iRect.iBr.iX = d.iSize.iWidth; |
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311 iRect.iBr.iY = d.iSize.iHeight; |
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312 } |
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313 iFullSize = d.iSize; |
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314 |
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315 // set macroblock parameters |
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316 iBlockSize = d.iBlockSize; |
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317 iSizeInBlocks = d.iSizeInBlocks; |
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318 |
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319 iOutputState = EBuffer; |
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320 |
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321 if ( iBlockBuffer ) |
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322 { |
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323 for (TInt i = 0; i < KBlockBufferSize; ++i) |
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324 { |
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325 delete iBlockBuffer[i]; |
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326 iBlockBuffer[i] = NULL; |
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327 } |
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328 } |
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329 delete[] iBlockBuffer; |
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330 iBlockBuffer = NULL; |
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331 iBlockBuffer = new (ELeave) TBlockEntry * [KBlockBufferSize]; |
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332 TInt i; |
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333 for (i = 0; i < KBlockBufferSize; ++i) iBlockBuffer[i] = NULL; |
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334 |
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335 iSizeInBlocks = d.iSizeInBlocks; |
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336 TInt blocks = iSizeInBlocks.iWidth * iSizeInBlocks.iHeight; |
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337 delete[] iIndexMap; |
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338 iIndexMap = NULL; |
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339 iIndexMap = new (ELeave) TInt [blocks]; |
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340 for (i = 0; i < blocks; ++i) iIndexMap[i] = -1; |
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341 |
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342 iOldestBlock = 0; |
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343 |
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344 |
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345 // load rectangle |
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346 LoadRectL(); |
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347 } |
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348 else if( token.Compare( _L("exifdata") ) == 0 ) |
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349 { |
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350 return (TInt)(iJpeg->ExifData().Ptr()); |
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351 } |
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352 else if( token.Compare( _L("ulc") ) == 0 ) |
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353 { |
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354 lex.Inc(); |
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355 lex.Val( iRect.iTl.iX ); |
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356 } |
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357 else if( token.Compare( _L("ulr") ) == 0 ) |
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358 { |
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359 lex.Inc(); |
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360 lex.Val( iRect.iTl.iY ); |
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361 } |
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362 else if( token.Compare( _L("lrc") ) == 0 ) |
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363 { |
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364 lex.Inc(); |
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365 lex.Val( iRect.iBr.iX ); |
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366 } |
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367 else if( token.Compare( _L("lrr") ) == 0 ) |
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368 { |
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369 lex.Inc(); |
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370 lex.Val( iRect.iBr.iY ); |
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371 } |
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372 else if( token.Compare( _L("fileoutput") ) == 0 ) |
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373 { |
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374 iRect.iTl.iX = 0; |
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375 iRect.iTl.iY = 0; |
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376 iRect.iBr.iX = iFullSize.iWidth; |
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377 iRect.iBr.iY = iFullSize.iHeight; |
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378 iOutputState = EDirect; |
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379 } |
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380 else if( token.Compare( _L("bufferoutput") ) == 0 ) |
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381 { |
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382 iOutputState = EBuffer; |
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383 } |
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384 else if( token.Compare( _L("exiflength") ) == 0 ) |
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385 { |
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386 return iJpeg->ExifData().Length(); |
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387 } |
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388 } |
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389 return 0; |
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390 } |
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391 |
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392 //============================================================================= |
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393 const char* CFilterJpegSource::Type() |
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394 { |
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395 return "jpegsource"; |
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396 } |
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397 |
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398 //============================================================================= |
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399 void CFilterJpegSource::LoadRectL() |
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400 { |
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401 |
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402 // compute destination buffer size |
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403 TInt width = iRect.iBr.iX - iRect.iTl.iX; |
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404 TInt height = iRect.iBr.iY - iRect.iTl.iY; |
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405 |
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406 if (width >= height) |
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407 { |
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408 TReal scale = (TReal)KDestBufferMaxDim / width; |
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409 iDestSize.iWidth = KDestBufferMaxDim; |
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410 iDestSize.iHeight = (TInt)(height * scale + 0.5); |
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411 } |
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412 else |
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413 { |
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414 TReal scale = (TReal)KDestBufferMaxDim / height; |
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415 iDestSize.iHeight = KDestBufferMaxDim; |
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416 iDestSize.iWidth = (TInt)(width * scale + 0.5); |
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417 } |
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418 |
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419 // create new destination buffer |
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420 delete[] iDestBuffer; |
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421 iDestBuffer = new (ELeave) TUint32 [iDestSize.iWidth * iDestSize.iHeight]; |
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422 |
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423 // compute scale |
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424 TJpegScale scale = EScale1; |
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425 while ((width /= 2) > iDestSize.iWidth) |
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426 { |
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427 if (scale == EScale1) |
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428 { |
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429 scale= EScale2; |
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430 } |
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431 else if (scale == EScale2) |
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432 { |
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433 scale= EScale4; |
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434 } |
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435 else if (scale == EScale4) |
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436 { |
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437 scale= EScale8; |
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438 } |
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439 } |
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440 |
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441 // load scaled rectangle |
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442 TBitmapHandle loadbitmap; |
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443 TRect loadrect = iRect; |
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444 iJpeg->SetScale(scale); |
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445 loadbitmap = iJpeg->LoadImageL(loadrect); |
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446 |
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447 // scale buffer |
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448 TInt sc = (TInt) ((TReal)(height << KScaleBits) / iDestSize.iHeight + 0.5); |
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449 TInt ws = (loadrect.iBr.iX - loadrect.iTl.iX) >> (TInt)scale; |
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450 |
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451 TUint32 * pD = iDestBuffer; |
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452 TUint32 * pS = (TUint32 *)loadbitmap.iData + |
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453 ((iRect.iTl.iY - loadrect.iTl.iY) >> (TInt)scale) * ws + |
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454 ((iRect.iTl.iX - loadrect.iTl.iX) >> (TInt)scale); |
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455 |
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456 for (TInt i = 0; i < iDestSize.iHeight; ++i) |
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457 { |
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458 TInt y = (i * sc) >> KScaleBits; |
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459 y >>= (TInt)scale; |
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460 for (TInt j = 0; j < iDestSize.iWidth; ++j) |
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461 { |
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462 TInt x = (j * sc) >> KScaleBits; |
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463 x >>= (TInt)scale; |
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464 *pD++ = *(pS + y * ws + x); |
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465 } |
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466 } |
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467 |
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468 delete loadbitmap.iData; |
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469 |
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470 iRelScale = (TReal)(iDestSize.iHeight) / (TReal)height; |
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471 |
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472 iScaledRect.iTl.iX = (TInt)(iRelScale * iRect.iTl.iX + 0.5); |
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473 iScaledRect.iTl.iY = (TInt)(iRelScale * iRect.iTl.iY + 0.5); |
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474 iScaledRect.iBr.iX = (TInt)(iRelScale * iRect.iBr.iX + 0.5); |
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475 iScaledRect.iBr.iY = (TInt)(iRelScale * iRect.iBr.iY + 0.5); |
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476 |
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477 // check that iScaledRect is inside buffer |
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478 TInt tmp = iScaledRect.iBr.iX - iScaledRect.iTl.iX - iDestSize.iWidth; |
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479 if ( tmp > 0 ) |
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480 { |
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481 iScaledRect.iBr.iX -= tmp; |
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482 } |
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483 |
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484 tmp = iScaledRect.iBr.iY - iScaledRect.iTl.iY - iDestSize.iHeight; |
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485 if (tmp > 0 ) |
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486 { |
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487 iScaledRect.iBr.iY -= tmp; |
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488 } |
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489 |
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490 |
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491 // CFbsBitmap * bitmap = new (ELeave) CFbsBitmap; |
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492 // CleanupStack::PushL(bitmap); |
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493 // User::LeaveIfError(bitmap->Create(iDestSize, EColor16M)); |
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494 // TBitmapUtil bm (bitmap); |
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495 // bm.Begin(TPoint(0,0)); |
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496 // TUint8 * pDOS = (TUint8 *)bitmap->DataAddress(); |
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497 // pS = iDestBuffer; |
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498 // ws = CFbsBitmap::ScanLineLength(iDestSize.iWidth, EColor16M); |
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499 // for (TInt ii = 0; ii < iDestSize.iHeight; ++ii) |
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500 // { |
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501 // TUint8 * pD = pDOS; |
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502 // pDOS += ws; |
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503 // for (TInt j = 0; j < iDestSize.iWidth; ++j) |
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504 // { |
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505 // TUint32 c = *pS++; |
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506 // *pD++ = c & 0xFF; |
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507 // c >>= 8; |
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508 // *pD++ = c & 0xFF; |
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509 // c >>= 8; |
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510 // *pD++ = c & 0xFF; |
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511 // } |
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512 // } |
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513 // bm.End(); |
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514 // TFileName filename; |
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515 // filename.Copy (_L("c:\\nokia\\images\\sf_")); |
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516 // filename.AppendNum((TInt)iDestBuffer); |
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517 // filename.Append(_L(".mbm")); |
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518 // bitmap->Save(filename); |
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519 // |
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520 // CleanupStack::PopAndDestroy(); // bitmap |
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521 |
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522 |
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523 } |
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524 |
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525 |
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526 |
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527 #if !defined(EKA2) |
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528 GLDEF_C TInt E32Dll( TDllReason ) |
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529 { |
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530 return KErrNone; |
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531 } |
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532 #endif |