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1 // Copyright (c) 1999-2009 Nokia Corporation and/or its subsidiary(-ies). |
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2 // All rights reserved. |
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3 // This component and the accompanying materials are made available |
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4 // under the terms of "Eclipse Public License v1.0" |
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5 // which accompanies this distribution, and is available |
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6 // at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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7 // |
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8 // Initial Contributors: |
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9 // Nokia Corporation - initial contribution. |
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10 // |
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11 // Contributors: |
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12 // |
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13 // Description: |
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14 // |
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15 |
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16 #include <fbs.h> |
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17 #include <s32mem.h> |
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18 #include "ImageClientMain.h" |
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19 #include "MBMCodec.h" |
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20 |
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21 _LIT(KMBMPanicCategory, "MBMConvertPlugin"); |
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22 |
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23 // Global panic function |
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24 GLDEF_C void Panic(TIclPanic aError) |
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25 { |
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26 User::Panic(KMBMPanicCategory, aError); |
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27 } |
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28 |
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29 |
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30 // CMbmReadCodec |
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31 CMbmReadCodec::CMbmReadCodec(TUint32 aMbmRootStreamOffset) |
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32 :iMbmRootStreamOffset(aMbmRootStreamOffset) |
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33 { |
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34 } |
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35 |
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36 CMbmReadCodec::~CMbmReadCodec() |
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37 { |
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38 delete iCodecProc; |
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39 } |
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40 |
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41 |
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42 CMbmReadCodec* CMbmReadCodec::NewL(TUint32 aMbmRootStreamOffset) |
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43 { |
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44 CMbmReadCodec* self = new(ELeave) CMbmReadCodec(aMbmRootStreamOffset); |
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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 TDisplayMode CMbmReadCodec::DisplayModeL(TInt aBitsPerPixel, TUint32 aFlags) |
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52 { |
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53 if (aFlags & TFrameInfo::EColor) |
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54 { |
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55 switch (aBitsPerPixel) |
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56 { |
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57 case 4: |
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58 return EColor16; |
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59 case 8: |
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60 return EColor256; |
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61 case 12: |
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62 return EColor4K; |
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63 case 16: |
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64 return EColor64K; |
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65 case 24: |
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66 return EColor16M; |
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67 case 32: |
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68 if(aFlags & TFrameInfo::EAlphaChannel) |
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69 { |
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70 return EColor16MA; |
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71 } |
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72 else |
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73 { |
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74 return EColor16MU; |
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75 } |
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76 default: |
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77 User::Leave(KErrNotSupported); |
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78 } |
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79 } |
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80 else |
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81 { |
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82 switch (aBitsPerPixel) |
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83 { |
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84 case 1: |
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85 return EGray2; |
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86 case 2: |
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87 return EGray4; |
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88 case 4: |
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89 return EGray16; |
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90 case 8: |
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91 return EGray256; |
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92 default: |
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93 User::Leave(KErrNotSupported); |
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94 } |
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95 } |
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96 |
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97 return ENone; |
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98 } |
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99 |
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100 void CMbmReadCodec::InitFrameL(TFrameInfo& aFrameInfo, CFrameImageData& aFrameImageData, TBool aDisableErrorDiffusion, CFbsBitmap& aFrame, CFbsBitmap* /*aFrameMask*/) |
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101 { |
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102 iFrameInfo = &aFrameInfo; |
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103 iFrameData = STATIC_CAST(TMbmDecodeData*, aFrameImageData.GetFrameData(0)); |
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104 iCompressed = iFrameData->iCompressed; |
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105 |
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106 iByteLength = iFrameData->iImageDataSizeInBytes; |
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107 |
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108 TPoint& pos = Pos(); |
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109 pos.SetXY(0,0); |
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110 |
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111 TSize originalSize(iFrameInfo->iFrameCoordsInPixels.Size()); |
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112 |
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113 TDisplayMode displayMode = DisplayModeL(iFrameInfo->iBitsPerPixel,iFrameInfo->iFlags); |
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114 const TSize destinationSize(aFrame.SizeInPixels()); |
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115 TInt reductionFactor = ReductionFactor(originalSize, destinationSize); |
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116 |
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117 CImageProcessor* imageProc = ImageProcessorUtility::NewImageProcessorL(aFrame, reductionFactor, displayMode, aDisableErrorDiffusion); |
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118 SetImageProcessor(imageProc); |
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119 |
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120 imageProc->PrepareL(aFrame,originalSize); |
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121 TInt scanLinePixels = ScanLinePixels(originalSize.iWidth); |
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122 imageProc->SetPixelPadding(scanLinePixels - originalSize.iWidth); |
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123 SetCodecProcessorL(); |
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124 |
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125 ClearBitmapL(aFrame, KRgbWhite); |
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126 // clear in case of streamed partial decodes |
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127 } |
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128 |
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129 void CMbmReadCodec::InitFrameHeader(TFrameInfo& aFrameSettings, CFrameImageData& aFrameImageData) |
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130 { |
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131 ASSERT(aFrameSettings.CurrentFrameState() == TFrameInfo::EFrameInfoUninitialised); |
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132 iFrameInfo = &aFrameSettings; |
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133 iImageData = &aFrameImageData; |
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134 iFrameInfo->SetCurrentFrameState(TFrameInfo::EFrameInfoProcessingFrameHeader); |
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135 } |
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136 |
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137 TFrameState CMbmReadCodec::ProcessFrameHeaderL(TBufPtr8& aData) |
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138 { |
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139 iStartDataPtr = CONST_CAST(TUint8*,aData.Ptr()); |
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140 iDataPtr = iStartDataPtr; |
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141 iDataPtrLimit = iStartDataPtr + aData.Length(); |
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142 |
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143 if (iFrameInfo->CurrentFrameState() == TFrameInfo::EFrameInfoProcessingFrame) |
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144 { |
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145 if(iFrameDataRemaining <= aData.Length()) |
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146 iNumberOfFrames++; |
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147 else |
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148 { |
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149 iMbmRootStreamOffset -= aData.Length(); |
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150 iFrameDataRemaining -= aData.Length(); |
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151 aData.Shift(aData.Length()); |
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152 return EFrameIncomplete; |
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153 } |
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154 |
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155 if ((iMbmRootStreamOffset-iFrameDataRemaining) == 0) |
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156 { |
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157 iFrameInfo->SetCurrentFrameState(TFrameInfo::EFrameInfoProcessingComplete); |
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158 return EFrameComplete; |
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159 } |
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160 else if ((iMbmRootStreamOffset - iFrameDataRemaining) < KMbmInfoHeaderSize) |
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161 { |
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162 //Bitmap StreamLength is too short to continue processing. |
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163 User::Leave(KErrCorrupt); |
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164 } |
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165 else |
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166 { |
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167 aData.Shift(iFrameDataRemaining); |
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168 iMbmRootStreamOffset -= iFrameDataRemaining; |
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169 |
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170 iFrameInfo->SetCurrentFrameState(TFrameInfo::EFrameInfoProcessingComplete); |
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171 return EFrameIncomplete; |
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172 } |
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173 } |
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174 |
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175 if (iFrameInfo->CurrentFrameState() == TFrameInfo::EFrameInfoProcessingFrameHeader) |
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176 { |
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177 if (aData.Length()<KMbmInfoHeaderSize) |
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178 User::Leave(KErrUnderflow); |
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179 |
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180 TMbmDecodeData* mbmDecodeData = new(ELeave)TMbmDecodeData; |
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181 CleanupStack::PushL(mbmDecodeData); |
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182 |
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183 User::LeaveIfError(iImageData->AppendFrameData(mbmDecodeData)); |
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184 CleanupStack::Pop(); // mbmImageData |
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185 |
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186 SEpocBitmapHeader header; |
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187 RDesReadStream stream; |
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188 stream.Open(aData); |
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189 CleanupClosePushL(stream); |
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190 header.iBitmapSize=stream.ReadInt32L(); |
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191 header.iStructSize=stream.ReadInt32L(); |
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192 if (header.iStructSize!=sizeof(SEpocBitmapHeader)) User::Leave(KErrCorrupt); |
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193 header.iSizeInPixels.iWidth=stream.ReadInt32L(); |
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194 header.iSizeInPixels.iHeight=stream.ReadInt32L(); |
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195 header.iSizeInTwips.iWidth=stream.ReadInt32L(); |
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196 header.iSizeInTwips.iHeight=stream.ReadInt32L(); |
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197 header.iBitsPerPixel=stream.ReadInt32L(); |
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198 header.iColor=stream.ReadUint32L(); |
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199 header.iPaletteEntries=stream.ReadInt32L(); |
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200 header.iCompression=(TBitmapfileCompression)stream.ReadUint32L(); |
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201 CleanupStack::PopAndDestroy(); //stream |
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202 |
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203 if (header.iBitmapSize<KMbmInfoHeaderSize) |
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204 User::Leave(KErrCorrupt); |
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205 |
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206 iFrameDataRemaining = header.iBitmapSize - KMbmInfoHeaderSize; |
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207 if (iMbmRootStreamOffset<KMbmInfoHeaderSize) |
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208 User::Leave(KErrCorrupt); |
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209 |
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210 iMbmRootStreamOffset -= KMbmInfoHeaderSize; |
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211 TInt frameDataOffset = iFrameInfo->FrameDataOffset(); |
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212 iFrameInfo->SetFrameDataOffset(frameDataOffset + KMbmInfoHeaderSize); |
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213 iFrameInfo->iFrameCoordsInPixels.SetRect(TPoint(0,0),header.iSizeInPixels); |
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214 iFrameInfo->iOverallSizeInPixels = header.iSizeInPixels; |
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215 iFrameInfo->iFrameSizeInTwips = header.iSizeInTwips; |
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216 iFrameInfo->iBitsPerPixel = header.iBitsPerPixel; |
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217 iFrameInfo->iDelay = 0; |
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218 iFrameInfo->iFlags = TFrameInfo::ECanDither; |
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219 |
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220 switch(header.iColor) |
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221 { |
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222 case SEpocBitmapHeader::ENoColor: |
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223 break; |
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224 case SEpocBitmapHeader::EColor: |
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225 iFrameInfo->iFlags |= TFrameInfo::EColor; |
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226 break; |
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227 case SEpocBitmapHeader::EColorAlpha: |
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228 iFrameInfo->iFlags |= TFrameInfo::EColor; |
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229 iFrameInfo->iFlags |= TFrameInfo::ETransparencyPossible; |
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230 iFrameInfo->iFlags |= TFrameInfo::EAlphaChannel; |
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231 break; |
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232 default: |
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233 User::Leave(KErrNotSupported); |
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234 } |
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235 |
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236 mbmDecodeData->iCompressed = header.iCompression; |
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237 mbmDecodeData->iImageDataSizeInBytes = header.iBitmapSize - header.iStructSize; |
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238 |
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239 if (iFrameInfo->iFrameCoordsInPixels.iBr.iX < 0 || iFrameInfo->iFrameCoordsInPixels.iBr.iY < 0 || |
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240 iFrameInfo->iFrameSizeInTwips.iWidth < 0 || iFrameInfo->iFrameSizeInTwips.iHeight < 0 || |
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241 !(iFrameInfo->iBitsPerPixel == 1 || iFrameInfo->iBitsPerPixel == 2 || |
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242 iFrameInfo->iBitsPerPixel == 4 || iFrameInfo->iBitsPerPixel == 8 || |
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243 iFrameInfo->iBitsPerPixel == 12 || iFrameInfo->iBitsPerPixel == 16 || |
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244 iFrameInfo->iBitsPerPixel == 24 || iFrameInfo->iBitsPerPixel == 32)) |
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245 User::Leave(KErrCorrupt); |
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246 |
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247 switch (iFrameInfo->iBitsPerPixel) |
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248 { |
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249 case 1: |
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250 iFrameInfo->iFrameDisplayMode = EGray2; |
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251 break; |
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252 |
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253 case 2: |
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254 iFrameInfo->iFrameDisplayMode = EGray4; |
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255 break; |
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256 |
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257 case 4: |
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258 iFrameInfo->iFrameDisplayMode = (iFrameInfo->iFlags & TFrameInfo::EColor) ? EColor16 : EGray16; |
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259 break; |
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260 |
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261 case 8: |
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262 iFrameInfo->iFrameDisplayMode = (iFrameInfo->iFlags & TFrameInfo::EColor) ? EColor256 : EGray256; |
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263 break; |
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264 |
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265 case 12: |
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266 iFrameInfo->iFrameDisplayMode = EColor4K; |
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267 break; |
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268 |
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269 case 16: |
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270 iFrameInfo->iFrameDisplayMode = EColor64K; |
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271 break; |
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272 |
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273 case 24: |
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274 iFrameInfo->iFrameDisplayMode = EColor16M; |
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275 break; |
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276 |
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277 case 32: |
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278 if(iFrameInfo->iFlags & TFrameInfo::ETransparencyPossible && iFrameInfo->iFlags & TFrameInfo::EAlphaChannel) |
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279 { |
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280 iFrameInfo->iFrameDisplayMode = EColor16MA; |
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281 } |
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282 else |
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283 { |
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284 iFrameInfo->iFrameDisplayMode = EColor16MU; |
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285 } |
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286 break; |
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287 } |
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288 |
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289 aData.Shift(KMbmInfoHeaderSize); |
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290 iFrameInfo->SetCurrentFrameState(TFrameInfo::EFrameInfoProcessingFrame); |
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291 } |
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292 |
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293 return EFrameIncomplete; |
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294 } |
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295 |
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296 TFrameState CMbmReadCodec::ProcessFrameL(TBufPtr8& aSrc) |
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297 { |
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298 TUint8* srcPtr = CONST_CAST(TUint8*,aSrc.Ptr()); |
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299 iDataPtr = srcPtr; |
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300 iDataPtrLimit = iDataPtr + Min(aSrc.Length(),iByteLength); |
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301 |
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302 iCodecProc->DoProcessL(iDataPtr,iDataPtrLimit); |
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303 TInt bytesUsed = iDataPtr - srcPtr; |
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304 aSrc.Shift(bytesUsed); |
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305 iByteLength -= bytesUsed; |
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306 |
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307 if (iByteLength == 0) |
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308 { |
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309 ImageProcessor()->FlushPixels(); |
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310 delete iCodecProc; |
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311 iCodecProc = NULL; |
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312 return EFrameComplete; |
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313 } |
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314 return EFrameIncomplete; |
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315 } |
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316 |
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317 TInt CMbmReadCodec::ScanLinePixels(TInt aWidth) |
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318 { |
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319 switch (iFrameInfo->iBitsPerPixel) |
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320 { |
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321 case 1: |
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322 return CFbsBitmap::ScanLineLength(aWidth,EGray2) << 3; |
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323 case 2: |
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324 return CFbsBitmap::ScanLineLength(aWidth,EGray4) << 2; |
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325 case 4: |
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326 return CFbsBitmap::ScanLineLength(aWidth,EGray16) << 1; |
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327 case 8: |
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328 return CFbsBitmap::ScanLineLength(aWidth,EGray256); |
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329 case 12: |
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330 case 16: |
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331 return CFbsBitmap::ScanLineLength(aWidth,EColor64K) >> 1; |
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332 case 24: |
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333 return CFbsBitmap::ScanLineLength(aWidth,EColor16M) / 3; |
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334 case 32: |
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335 return CFbsBitmap::ScanLineLength(aWidth,EColor16MU) / 4; // for all 32bit modes |
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336 default: |
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337 return 0; |
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338 } |
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339 } |
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340 |
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341 void CMbmReadCodec::SetCodecProcessorL() |
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342 { |
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343 delete iCodecProc; |
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344 iCodecProc = NULL; |
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345 const TBool color = (iFrameInfo->iFlags & TFrameInfo::EColor); |
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346 |
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347 switch (iFrameInfo->iBitsPerPixel) |
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348 { |
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349 case 1: |
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350 if (iCompressed) |
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351 iCodecProc = new(ELeave) T1BppCompressedMbmReadCodec; |
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352 else |
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353 iCodecProc = new(ELeave) T1BppMbmReadCodec; |
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354 break; |
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355 case 2: |
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356 if (iCompressed) |
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357 iCodecProc = new(ELeave) T2BppCompressedMbmReadCodec; |
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358 else |
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359 iCodecProc = new(ELeave) T2BppMbmReadCodec; |
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360 break; |
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361 case 4: |
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362 if (color) |
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363 { |
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364 if (iCompressed) |
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365 iCodecProc = new(ELeave) T4BppColorCompressedMbmReadCodec; |
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366 else |
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367 iCodecProc = new(ELeave) T4BppColorMbmReadCodec; |
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368 } |
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369 else |
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370 { |
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371 if (iCompressed) |
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372 iCodecProc = new(ELeave) T4BppMonoCompressedMbmReadCodec; |
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373 else |
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374 iCodecProc = new(ELeave) T4BppMonoMbmReadCodec; |
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375 } |
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376 break; |
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377 case 8: |
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378 if (color) |
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379 { |
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380 if (iCompressed) |
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381 iCodecProc = new(ELeave) T8BppColorCompressedMbmReadCodec; |
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382 else |
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383 iCodecProc = new(ELeave) T8BppColorMbmReadCodec; |
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384 } |
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385 else |
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386 { |
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387 if (iCompressed) |
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388 iCodecProc = new(ELeave) T8BppMonoCompressedMbmReadCodec; |
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389 else |
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390 iCodecProc = new(ELeave) T8BppMonoMbmReadCodec; |
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391 } |
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392 break; |
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393 case 12: |
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394 if (iCompressed) |
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395 iCodecProc = new(ELeave) T12BppCompressedMbmReadCodec; |
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396 else |
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397 iCodecProc = new(ELeave) T12BppMbmReadCodec; |
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398 break; |
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399 case 16: |
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400 if (iCompressed) |
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401 iCodecProc = new(ELeave) T16BppCompressedMbmReadCodec; |
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402 else |
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403 iCodecProc = new(ELeave) T16BppMbmReadCodec; |
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404 break; |
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405 case 24: |
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406 if (iCompressed) |
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407 iCodecProc = new(ELeave) T24BppCompressedMbmReadCodec; |
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408 else |
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409 iCodecProc = new(ELeave) T24BppMbmReadCodec; |
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410 break; |
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411 case 32: |
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412 if (iCompressed) |
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413 User::Leave(KErrNotSupported); |
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414 else |
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415 iCodecProc = new(ELeave) T32BppMbmReadCodec; |
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416 break; |
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417 default: |
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418 User::Leave(KErrCorrupt); |
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419 } |
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420 |
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421 iCodecProc->iImageProc = ImageProcessor(); |
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422 } |
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423 |
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424 |
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425 // TMbmReadCodec |
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426 void TMbmReadCodec::AddPixelRun(TRgb aColor,TInt aNumberOfPixels) |
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427 { |
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428 iImageProc->SetPixelRun(aColor,aNumberOfPixels); |
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429 } |
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430 |
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431 |
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432 // T1BppMbmReadCodec |
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433 void T1BppMbmReadCodec::DoProcessL(TUint8*& aDataPtr,TUint8* aDataPtrLimit) |
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434 { |
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435 while (aDataPtr < aDataPtrLimit) |
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436 AddPixelValue(*aDataPtr++); |
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437 } |
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438 |
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439 void T1BppMbmReadCodec::AddPixelValue(TUint8 aValue) |
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440 { |
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441 iImageProc->SetPixel((aValue & 0x01) ? KRgbWhite : KRgbBlack); |
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442 iImageProc->SetPixel((aValue & 0x02) ? KRgbWhite : KRgbBlack); |
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443 iImageProc->SetPixel((aValue & 0x04) ? KRgbWhite : KRgbBlack); |
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444 iImageProc->SetPixel((aValue & 0x08) ? KRgbWhite : KRgbBlack); |
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445 iImageProc->SetPixel((aValue & 0x10) ? KRgbWhite : KRgbBlack); |
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446 iImageProc->SetPixel((aValue & 0x20) ? KRgbWhite : KRgbBlack); |
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447 iImageProc->SetPixel((aValue & 0x40) ? KRgbWhite : KRgbBlack); |
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448 iImageProc->SetPixel((aValue & 0x80) ? KRgbWhite : KRgbBlack); |
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449 } |
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450 |
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451 |
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452 // T1BppCompressedMbmReadCodec |
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453 void T1BppCompressedMbmReadCodec::DoProcessL(TUint8*& aDataPtr,TUint8* aDataPtrLimit) |
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454 { |
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455 while (aDataPtr < aDataPtrLimit) |
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456 { |
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457 TInt8 count = *aDataPtr++; |
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458 |
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459 if (count >= 0) |
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460 { |
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461 if (aDataPtr >= aDataPtrLimit) |
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462 { |
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463 aDataPtr--; |
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464 break; |
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465 } |
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466 AddPixelRun(*aDataPtr++,count + 1); |
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467 } |
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468 else |
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469 { |
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470 TUint8* tempDataPtrLimit = aDataPtr - count; |
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471 if (tempDataPtrLimit > aDataPtrLimit) |
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472 { |
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473 aDataPtr--; |
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474 break; |
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475 } |
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476 while (aDataPtr < tempDataPtrLimit) |
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477 AddPixelValue(*aDataPtr++); |
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478 } |
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479 } |
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480 } |
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481 |
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482 void T1BppCompressedMbmReadCodec::AddPixelRun(TUint8 aValue,TInt aNumberOfValues) |
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483 { |
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484 TRgb color0 = (aValue & 0x01) ? KRgbWhite : KRgbBlack; |
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485 TRgb color1 = (aValue & 0x02) ? KRgbWhite : KRgbBlack; |
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486 TRgb color2 = (aValue & 0x04) ? KRgbWhite : KRgbBlack; |
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487 TRgb color3 = (aValue & 0x08) ? KRgbWhite : KRgbBlack; |
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488 TRgb color4 = (aValue & 0x10) ? KRgbWhite : KRgbBlack; |
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489 TRgb color5 = (aValue & 0x20) ? KRgbWhite : KRgbBlack; |
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490 TRgb color6 = (aValue & 0x40) ? KRgbWhite : KRgbBlack; |
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491 TRgb color7 = (aValue & 0x80) ? KRgbWhite : KRgbBlack; |
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492 |
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493 for (; aNumberOfValues > 0; aNumberOfValues--) |
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494 { |
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495 iImageProc->SetPixel(color0); |
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496 iImageProc->SetPixel(color1); |
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497 iImageProc->SetPixel(color2); |
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498 iImageProc->SetPixel(color3); |
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499 iImageProc->SetPixel(color4); |
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500 iImageProc->SetPixel(color5); |
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501 iImageProc->SetPixel(color6); |
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502 iImageProc->SetPixel(color7); |
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503 } |
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504 } |
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505 |
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506 |
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507 // T2BppMbmReadCodec |
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508 void T2BppMbmReadCodec::DoProcessL(TUint8*& aDataPtr,TUint8* aDataPtrLimit) |
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509 { |
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510 while (aDataPtr < aDataPtrLimit) |
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511 AddPixelValue(*aDataPtr++); |
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512 } |
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513 |
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514 void T2BppMbmReadCodec::AddPixelValue(TUint8 aValue) |
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515 { |
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516 iImageProc->SetPixel(TRgb::Gray4(aValue & 0x3)); |
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517 iImageProc->SetPixel(TRgb::Gray4((aValue >> 2) & 0x3)); |
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518 iImageProc->SetPixel(TRgb::Gray4((aValue >> 4) & 0x3)); |
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519 iImageProc->SetPixel(TRgb::Gray4((aValue >> 6) & 0x3)); |
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520 } |
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521 |
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522 |
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523 // T2BppCompressedMbmReadCodec |
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524 void T2BppCompressedMbmReadCodec::DoProcessL(TUint8*& aDataPtr,TUint8* aDataPtrLimit) |
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525 { |
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526 while (aDataPtr < aDataPtrLimit) |
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527 { |
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528 TInt8 count = *aDataPtr++; |
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529 |
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530 if (count >= 0) |
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531 { |
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532 if (aDataPtr >= aDataPtrLimit) |
|
533 { |
|
534 aDataPtr--; |
|
535 break; |
|
536 } |
|
537 AddPixelRun(*aDataPtr++,count + 1); |
|
538 } |
|
539 else |
|
540 { |
|
541 TUint8* tempDataPtrLimit = aDataPtr - count; |
|
542 if (tempDataPtrLimit > aDataPtrLimit) |
|
543 { |
|
544 aDataPtr--; |
|
545 break; |
|
546 } |
|
547 while (aDataPtr < tempDataPtrLimit) |
|
548 AddPixelValue(*aDataPtr++); |
|
549 } |
|
550 } |
|
551 } |
|
552 |
|
553 void T2BppCompressedMbmReadCodec::AddPixelRun(TUint8 aValue,TInt aNumberOfQuads) |
|
554 { |
|
555 TRgb color0 = TRgb::Gray4(aValue & 0x3); |
|
556 TRgb color1 = TRgb::Gray4((aValue >> 2) & 0x3); |
|
557 TRgb color2 = TRgb::Gray4((aValue >> 4) & 0x3); |
|
558 TRgb color3 = TRgb::Gray4((aValue >> 6) & 0x3); |
|
559 |
|
560 for (; aNumberOfQuads > 0; aNumberOfQuads--) |
|
561 { |
|
562 iImageProc->SetPixel(color0); |
|
563 iImageProc->SetPixel(color1); |
|
564 iImageProc->SetPixel(color2); |
|
565 iImageProc->SetPixel(color3); |
|
566 } |
|
567 } |
|
568 |
|
569 |
|
570 // T4BppMbmReadCodec |
|
571 void T4BppMbmReadCodec::DoProcessL(TUint8*& aDataPtr,TUint8* aDataPtrLimit) |
|
572 { |
|
573 while (aDataPtr < aDataPtrLimit) |
|
574 { |
|
575 TInt value = *aDataPtr++; |
|
576 iImageProc->SetPixel(ColorFromIndex(value & 0xf)); |
|
577 iImageProc->SetPixel(ColorFromIndex(value >> 4)); |
|
578 } |
|
579 } |
|
580 |
|
581 |
|
582 // T4BppCompressedMbmReadCodec |
|
583 void T4BppCompressedMbmReadCodec::DoProcessL(TUint8*& aDataPtr,TUint8* aDataPtrLimit) |
|
584 { |
|
585 while (aDataPtr < aDataPtrLimit) |
|
586 { |
|
587 TInt8 count = *aDataPtr++; |
|
588 |
|
589 if (count >= 0) |
|
590 { |
|
591 if (aDataPtr >= aDataPtrLimit) |
|
592 { |
|
593 aDataPtr--; |
|
594 break; |
|
595 } |
|
596 TInt value = *aDataPtr++; |
|
597 AddPixelRun(ColorFromIndex(value & 0xf),ColorFromIndex(value >> 4),count + 1); |
|
598 } |
|
599 else |
|
600 { |
|
601 TUint8* tempDataPtrLimit = aDataPtr - count; |
|
602 if (tempDataPtrLimit > aDataPtrLimit) |
|
603 { |
|
604 aDataPtr--; |
|
605 break; |
|
606 } |
|
607 while (aDataPtr < tempDataPtrLimit) |
|
608 { |
|
609 TInt value = *aDataPtr++; |
|
610 iImageProc->SetPixel(ColorFromIndex(value & 0xf)); |
|
611 iImageProc->SetPixel(ColorFromIndex(value >> 4)); |
|
612 } |
|
613 } |
|
614 } |
|
615 } |
|
616 |
|
617 void T4BppCompressedMbmReadCodec::AddPixelRun(TRgb aColor1,TRgb aColor2,TInt aNumberOfPairs) |
|
618 { |
|
619 for (; aNumberOfPairs > 0; aNumberOfPairs--) |
|
620 { |
|
621 iImageProc->SetPixel(aColor1); |
|
622 iImageProc->SetPixel(aColor2); |
|
623 } |
|
624 } |
|
625 |
|
626 |
|
627 // T8BppMbmReadCodec |
|
628 void T8BppMbmReadCodec::DoProcessL(TUint8*& aDataPtr,TUint8* aDataPtrLimit) |
|
629 { |
|
630 while (aDataPtr < aDataPtrLimit) |
|
631 iImageProc->SetPixel(ColorFromIndex(*aDataPtr++)); |
|
632 } |
|
633 |
|
634 |
|
635 // T8BppCompressedMbmReadCodec |
|
636 void T8BppCompressedMbmReadCodec::DoProcessL(TUint8*& aDataPtr,TUint8* aDataPtrLimit) |
|
637 { |
|
638 while (aDataPtr < aDataPtrLimit) |
|
639 { |
|
640 TInt8 count = *aDataPtr++; |
|
641 |
|
642 if (count >= 0) |
|
643 { |
|
644 if (aDataPtr >= aDataPtrLimit) |
|
645 { |
|
646 aDataPtr--; |
|
647 break; |
|
648 } |
|
649 AddPixelRun(ColorFromIndex(*aDataPtr++),count + 1); |
|
650 } |
|
651 else |
|
652 { |
|
653 TUint8* tempDataPtrLimit = aDataPtr - count; |
|
654 if (tempDataPtrLimit > aDataPtrLimit) |
|
655 { |
|
656 aDataPtr--; |
|
657 break; |
|
658 } |
|
659 while (aDataPtr < tempDataPtrLimit) |
|
660 iImageProc->SetPixel(ColorFromIndex(*aDataPtr++)); |
|
661 } |
|
662 } |
|
663 } |
|
664 |
|
665 |
|
666 // T12BppMbmReadCodec |
|
667 void T12BppMbmReadCodec::DoProcessL(TUint8*& aDataPtr,TUint8* aDataPtrLimit) |
|
668 { |
|
669 ASSERT(!(TInt(aDataPtr) & 1)); |
|
670 |
|
671 TUint16* tempDataPtr = (TUint16*)aDataPtr; |
|
672 TUint16* tempDataPtrLimit = tempDataPtr + ((aDataPtrLimit - aDataPtr) >> 1); |
|
673 |
|
674 while (tempDataPtr < tempDataPtrLimit) |
|
675 iImageProc->SetPixel(TRgb::Color4K((*tempDataPtr++) & 0x0fff)); |
|
676 |
|
677 aDataPtr = (TUint8*)tempDataPtr; |
|
678 } |
|
679 |
|
680 |
|
681 // T12BppCompressedMbmReadCodec |
|
682 void T12BppCompressedMbmReadCodec::DoProcessL(TUint8*& aDataPtr,TUint8* aDataPtrLimit) |
|
683 { |
|
684 if((TInt(aDataPtr) & 1)) |
|
685 { |
|
686 // Not word aligned |
|
687 while (aDataPtr < aDataPtrLimit) |
|
688 { |
|
689 TInt value = (aDataPtr[0] | aDataPtr[1] << 8); |
|
690 AddPixelRun(TRgb::Color4K(value & 0x0fff),(value >> 12) + 1); |
|
691 aDataPtr += 2; |
|
692 } |
|
693 } |
|
694 else |
|
695 { |
|
696 //Word Aligned |
|
697 TUint16* tempDataPtr = (TUint16*)aDataPtr; |
|
698 TUint16* tempDataPtrLimit = tempDataPtr + ((aDataPtrLimit - aDataPtr) >> 1); |
|
699 |
|
700 while (tempDataPtr < tempDataPtrLimit) |
|
701 { |
|
702 TInt value = *tempDataPtr++; |
|
703 AddPixelRun(TRgb::Color4K(value & 0x0fff),(value >> 12) + 1); |
|
704 } |
|
705 |
|
706 aDataPtr = (TUint8*)tempDataPtr; |
|
707 } |
|
708 } |
|
709 |
|
710 |
|
711 // T16BppMbmReadCodec |
|
712 void T16BppMbmReadCodec::DoProcessL(TUint8*& aDataPtr,TUint8* aDataPtrLimit) |
|
713 { |
|
714 ASSERT(!(TInt(aDataPtr) & 1)); |
|
715 |
|
716 TUint16* tempDataPtr = (TUint16*)aDataPtr; |
|
717 TUint16* tempDataPtrLimit = tempDataPtr + ((aDataPtrLimit - aDataPtr) >> 1); |
|
718 |
|
719 while (tempDataPtr < tempDataPtrLimit) |
|
720 iImageProc->SetPixel(TRgb::Color64K(*tempDataPtr++)); |
|
721 |
|
722 aDataPtr = (TUint8*)tempDataPtr; |
|
723 } |
|
724 |
|
725 |
|
726 // T16BppCompressedMbmReadCodec |
|
727 void T16BppCompressedMbmReadCodec::DoProcessL(TUint8*& aDataPtr,TUint8* aDataPtrLimit) |
|
728 { |
|
729 while (aDataPtr < aDataPtrLimit) |
|
730 { |
|
731 TInt8 count = *aDataPtr++; |
|
732 |
|
733 if (count >= 0) |
|
734 { |
|
735 if (aDataPtr + 2 > aDataPtrLimit) |
|
736 { |
|
737 aDataPtr--; |
|
738 break; |
|
739 } |
|
740 AddPixelRun(TRgb::Color64K(aDataPtr[0] | (aDataPtr[1] << 8)),count + 1); |
|
741 aDataPtr += 2; |
|
742 } |
|
743 else |
|
744 { |
|
745 TUint8* tempDataPtrLimit = aDataPtr + (count * -2); |
|
746 if (tempDataPtrLimit > aDataPtrLimit) |
|
747 { |
|
748 aDataPtr--; |
|
749 break; |
|
750 } |
|
751 while (aDataPtr < tempDataPtrLimit) |
|
752 { |
|
753 iImageProc->SetPixel(TRgb::Color64K(aDataPtr[0] | (aDataPtr[1] << 8))); |
|
754 aDataPtr += 2; |
|
755 } |
|
756 } |
|
757 } |
|
758 } |
|
759 |
|
760 |
|
761 // T24BppMbmReadCodec |
|
762 void T24BppMbmReadCodec::DoProcessL(TUint8*& aDataPtr,TUint8* aDataPtrLimit) |
|
763 { |
|
764 TUint8* tempDataPtrLimit = aDataPtrLimit - 2; // Safe limit for jumps of three bytes |
|
765 while (aDataPtr < tempDataPtrLimit) |
|
766 { |
|
767 iImageProc->SetPixel(TRgb(aDataPtr[2],aDataPtr[1],aDataPtr[0])); |
|
768 aDataPtr += 3; |
|
769 } |
|
770 } |
|
771 |
|
772 |
|
773 // T24BppCompressedMbmReadCodec |
|
774 void T24BppCompressedMbmReadCodec::DoProcessL(TUint8*& aDataPtr,TUint8* aDataPtrLimit) |
|
775 { |
|
776 while (aDataPtr < aDataPtrLimit) |
|
777 { |
|
778 TInt8 count = *aDataPtr++; |
|
779 |
|
780 if (count >= 0) |
|
781 { |
|
782 if (aDataPtr + 3 > aDataPtrLimit) |
|
783 { |
|
784 aDataPtr--; |
|
785 break; |
|
786 } |
|
787 AddPixelRun(TRgb(aDataPtr[2],aDataPtr[1],aDataPtr[0]),count + 1); |
|
788 aDataPtr += 3; |
|
789 } |
|
790 else |
|
791 { |
|
792 TUint8* tempDataPtrLimit = aDataPtr + (count * -3); |
|
793 if (tempDataPtrLimit > aDataPtrLimit) |
|
794 { |
|
795 aDataPtr--; |
|
796 break; |
|
797 } |
|
798 while (aDataPtr < tempDataPtrLimit) |
|
799 { |
|
800 iImageProc->SetPixel(TRgb(aDataPtr[2],aDataPtr[1],aDataPtr[0])); |
|
801 aDataPtr += 3; |
|
802 } |
|
803 } |
|
804 } |
|
805 } |
|
806 |
|
807 // T32BppMbmReadCodec |
|
808 void T32BppMbmReadCodec::DoProcessL(TUint8*& aDataPtr,TUint8* aDataPtrLimit) |
|
809 { |
|
810 TUint8* tempDataPtrLimit = aDataPtrLimit - 3; // Safe limit for jumps of four bytes |
|
811 while (aDataPtr < tempDataPtrLimit) |
|
812 { |
|
813 TRgb rgb(aDataPtr[2],aDataPtr[1],aDataPtr[0],aDataPtr[3]); |
|
814 iImageProc->SetPixel(rgb); |
|
815 aDataPtr += 4; |
|
816 } |
|
817 } |
|
818 |
|
819 // CMbmWriteCodec |
|
820 CMbmWriteCodec::CMbmWriteCodec(TDisplayMode aDisplayMode): |
|
821 iDisplayMode(aDisplayMode) |
|
822 {} |
|
823 |
|
824 CMbmWriteCodec::~CMbmWriteCodec() |
|
825 { |
|
826 delete iCodecProc; |
|
827 } |
|
828 |
|
829 CMbmWriteCodec* CMbmWriteCodec::NewL(TDisplayMode aDisplayMode) |
|
830 { |
|
831 CMbmWriteCodec* self = new(ELeave) CMbmWriteCodec(aDisplayMode); |
|
832 CleanupStack::PushL(self); |
|
833 self->ConstructL(); |
|
834 CleanupStack::Pop(self); |
|
835 return self; |
|
836 } |
|
837 |
|
838 TFrameState CMbmWriteCodec::ProcessFrameL(TBufPtr8& aDst) |
|
839 { |
|
840 TUint8* destStartPtr = CONST_CAST(TUint8*,aDst.Ptr()); |
|
841 iDataPtr = destStartPtr; |
|
842 iDataPtrLimit = iDataPtr + aDst.MaxLength(); |
|
843 |
|
844 if (iStreamTablePending) |
|
845 { |
|
846 TUint32 data = 1; |
|
847 Mem::Copy(iDataPtr,&data,sizeof(TUint32)); |
|
848 data = KMbmFirstBitmapOffset; |
|
849 iDataPtr += sizeof(TUint32); |
|
850 Mem::Copy(iDataPtr,&data,sizeof(TUint32)); |
|
851 iDataPtr += sizeof(TUint32); |
|
852 aDst.SetLength(iDataPtr - destStartPtr); |
|
853 |
|
854 return EFrameComplete; |
|
855 } |
|
856 |
|
857 DoProcessL(*Source()); |
|
858 |
|
859 aDst.SetLength(iDataPtr - destStartPtr); |
|
860 |
|
861 if (iPos.iY >= iSourceRect.iBr.iY) |
|
862 { |
|
863 if (iDataPtrLimit - iDataPtr >= 8) |
|
864 { |
|
865 TUint32 data = 1; |
|
866 Mem::Copy(iDataPtr,&data,sizeof(TUint32)); |
|
867 iDataPtr += sizeof(TUint32); |
|
868 data = KMbmFirstBitmapOffset; |
|
869 Mem::Copy(iDataPtr,&data,sizeof(TUint32)); |
|
870 iDataPtr += sizeof(TUint32); |
|
871 aDst.SetLength(iDataPtr - destStartPtr); |
|
872 return EFrameComplete; |
|
873 } |
|
874 else |
|
875 iStreamTablePending = ETrue; |
|
876 } |
|
877 |
|
878 return EFrameIncomplete; |
|
879 } |
|
880 |
|
881 void CMbmWriteCodec::InitFrameL(TBufPtr8& aDst, const CFbsBitmap& aFrame) |
|
882 { |
|
883 SetSource(&aFrame); |
|
884 |
|
885 TUint8* destStartPtr = CONST_CAST(TUint8*,aDst.Ptr()); |
|
886 iDataPtr = destStartPtr; |
|
887 iDataPtrLimit = iDataPtr + aDst.MaxLength(); |
|
888 |
|
889 iStreamTablePending = EFalse; |
|
890 |
|
891 iSourceRect = TRect(aFrame.SizeInPixels()); |
|
892 iPos.SetXY(0,0); |
|
893 |
|
894 TInt byteWidth = CFbsBitmap::ScanLineLength(iSourceRect.Size().iWidth,iDisplayMode); |
|
895 SEpocBitmapHeader bmpHeader; |
|
896 |
|
897 bmpHeader.iStructSize = sizeof(SEpocBitmapHeader); |
|
898 bmpHeader.iSizeInPixels = iSourceRect.Size(); |
|
899 bmpHeader.iSizeInTwips = aFrame.SizeInTwips(); |
|
900 |
|
901 delete iCodecProc; |
|
902 iCodecProc = NULL; |
|
903 |
|
904 switch (iDisplayMode) |
|
905 { |
|
906 case EGray2: |
|
907 bmpHeader.iBitsPerPixel = 1; |
|
908 iCodecProc = new(ELeave) T1BppWriteCodecProcessor; |
|
909 break; |
|
910 case EGray4: |
|
911 bmpHeader.iBitsPerPixel = 2; |
|
912 iCodecProc = new(ELeave) T2BppWriteCodecProcessor; |
|
913 break; |
|
914 case EGray16: |
|
915 case EColor16: |
|
916 bmpHeader.iBitsPerPixel = 4; |
|
917 iCodecProc = new(ELeave) T4BppWriteCodecProcessor; |
|
918 break; |
|
919 case EGray256: |
|
920 case EColor256: |
|
921 bmpHeader.iBitsPerPixel = 8; |
|
922 iCodecProc = new(ELeave) T8BppWriteCodecProcessor; |
|
923 break; |
|
924 case EColor4K: |
|
925 bmpHeader.iBitsPerPixel = 12; |
|
926 iCodecProc = new(ELeave) T16BppWriteCodecProcessor; |
|
927 break; |
|
928 case EColor64K: |
|
929 bmpHeader.iBitsPerPixel = 16; |
|
930 iCodecProc = new(ELeave) T16BppWriteCodecProcessor; |
|
931 break; |
|
932 case EColor16M: |
|
933 bmpHeader.iBitsPerPixel = 24; |
|
934 iCodecProc = new(ELeave) T24BppWriteCodecProcessor; |
|
935 break; |
|
936 case EColor16MU: |
|
937 case EColor16MA: |
|
938 bmpHeader.iBitsPerPixel = 32; |
|
939 iCodecProc = new(ELeave) T32BppWriteCodecProcessor; |
|
940 break; |
|
941 default: |
|
942 Panic(EBadDisplayMode); |
|
943 break; |
|
944 } |
|
945 |
|
946 switch (iDisplayMode) |
|
947 { |
|
948 case EGray2: |
|
949 case EGray4: |
|
950 case EGray16: |
|
951 case EGray256: |
|
952 bmpHeader.iColor = 0; |
|
953 break; |
|
954 case EColor16: |
|
955 case EColor256: |
|
956 case EColor4K: |
|
957 case EColor64K: |
|
958 case EColor16M: |
|
959 case EColor16MU: |
|
960 bmpHeader.iColor = 1; |
|
961 break; |
|
962 case EColor16MA: |
|
963 bmpHeader.iColor = 2; |
|
964 break; |
|
965 default: |
|
966 Panic(EBadDisplayMode); |
|
967 break; |
|
968 } |
|
969 |
|
970 bmpHeader.iPaletteEntries = 0; |
|
971 bmpHeader.iCompression = ENoBitmapCompression; |
|
972 bmpHeader.iBitmapSize = bmpHeader.iStructSize + (byteWidth * iSourceRect.Size().iHeight); |
|
973 |
|
974 Mem::Copy(iDataPtr,&bmpHeader,sizeof(SEpocBitmapHeader)); |
|
975 iDataPtr += sizeof(SEpocBitmapHeader); |
|
976 ASSERT(iDataPtr < iDataPtrLimit); |
|
977 |
|
978 iPaddingBytes = byteWidth - iCodecProc->PixelsToBytes(iSourceRect.Size().iWidth); |
|
979 |
|
980 aDst.SetLength(iDataPtr - destStartPtr); |
|
981 } |
|
982 |
|
983 void CMbmWriteCodec::DoProcessL(const CFbsBitmap& aFrame) |
|
984 { |
|
985 TUint8* safeDataPtrLimit = iDataPtrLimit - 2; |
|
986 while (iDataPtr < safeDataPtrLimit) |
|
987 { |
|
988 while (iBytesToWrite > 0) |
|
989 { |
|
990 *iDataPtr++ = 0; |
|
991 iBytesToWrite--; |
|
992 if (iDataPtr == iDataPtrLimit) |
|
993 break; |
|
994 } |
|
995 |
|
996 if (iPos.iY >= iSourceRect.iBr.iY) |
|
997 break; |
|
998 |
|
999 TInt scanLength = Min(iSourceRect.iBr.iX - iPos.iX,iCodecProc->BytesToPixels(iDataPtrLimit - iDataPtr)); |
|
1000 TInt dstLength = iCodecProc->PixelsToBytes(scanLength); |
|
1001 TPtr8 dstBuf(iDataPtr,dstLength,dstLength); |
|
1002 |
|
1003 aFrame.GetScanLine(dstBuf,iPos,scanLength,iDisplayMode); |
|
1004 |
|
1005 iPos.iX += scanLength; |
|
1006 iDataPtr += dstLength; |
|
1007 |
|
1008 if (iPos.iX == iSourceRect.iBr.iX) |
|
1009 { |
|
1010 iPos.iX = iSourceRect.iTl.iX; |
|
1011 iPos.iY++; |
|
1012 iBytesToWrite = iPaddingBytes; |
|
1013 } |
|
1014 } |
|
1015 } |
|
1016 |