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1 // Copyright (c) 1997-2009 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 <f32file.h> |
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17 #include <s32file.h> |
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18 #include <fbs.h> |
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19 #include <bitmap.h> |
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20 #include "UTILS.H" |
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21 #include <graphics/blendingalgorithms.h> |
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22 #include <graphics/lookuptable.h> |
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23 //#include "12to16.h" // lookup table for 12->16 bpp conversion |
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24 |
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25 #ifdef __ARMCC__ |
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26 #pragma arm |
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27 #pragma O3 |
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28 #pragma Otime |
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29 #endif |
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30 |
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31 GLREF_C void Panic(TFbsPanic aPanic); |
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32 |
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33 #define COLOR_VALUE(ScanLinePtr, XPos) (*((ScanLinePtr) + ((XPos) >> 5)) & ( 1 << ((XPos) & 0x1F))) |
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34 |
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35 |
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36 void CBitwiseBitmap::GetScanLineGray2(TDes8& aBuf,const TPoint& aPixel,TInt aLength,TBool aDither,const TPoint& aDitherOffset,TUint32* aScanlinePtr) const |
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37 { |
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38 aLength = Min(aLength,(TInt)((aBuf.MaxLength()) << 3)); |
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39 aBuf.SetLength((aLength + 7) >> 3); |
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40 |
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41 TUint8* ptr = (TUint8*)aBuf.Ptr(); |
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42 |
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43 TUint8 mask = 1; |
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44 TInt x = aPixel.iX; |
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45 *ptr=0; |
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46 |
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47 if (aDither) |
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48 { |
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49 TBool oddx = aDitherOffset.iX & 1; |
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50 TBool oddy = aDitherOffset.iY & 1; |
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51 |
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52 for(TInt count = 0;count < aLength;count++) |
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53 { |
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54 if (!mask) |
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55 { |
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56 mask = 1; |
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57 ptr++; |
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58 *ptr = 0; |
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59 } |
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60 if (HashTo1bpp(GetGrayPixelEx(x,aScanlinePtr),oddx,oddy)) |
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61 *ptr |= mask; |
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62 mask <<= 1; |
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63 oddx ^= 1; |
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64 x++; |
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65 } |
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66 } |
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67 else |
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68 { |
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69 for(TInt count = 0;count < aLength;count++) |
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70 { |
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71 if (!mask) |
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72 { |
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73 mask = 1; |
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74 ptr++; |
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75 *ptr = 0; |
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76 } |
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77 if (GetGrayPixelEx(x,aScanlinePtr) > 127) |
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78 *ptr |= mask; |
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79 mask <<= 1; |
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80 x++; |
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81 } |
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82 } |
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83 } |
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84 |
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85 void CBitwiseBitmap::GetScanLineGray4(TDes8& aBuf,const TPoint& aPixel,TInt aLength,TBool aDither,const TPoint& aDitherOffset,TUint32* aScanlinePtr) const |
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86 { |
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87 aLength = Min(aLength,(TInt)((aBuf.MaxLength())<<2)); |
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88 aBuf.SetLength((aLength + 3) >> 2); |
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89 |
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90 TUint8* ptr=(TUint8*)aBuf.Ptr(); |
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91 |
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92 TInt x = aPixel.iX; |
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93 if (iSettings.CurrentDisplayMode() == EGray16 && aDither) |
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94 { |
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95 *ptr=0; |
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96 TInt shift = 0; |
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97 TUint8 col = 0; |
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98 const TInt hasharray[4]={0,3,2,1}; |
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99 TInt index = (aDitherOffset.iX&1)+((aDitherOffset.iY&1)<<1); |
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100 for(TInt count=0;count<aLength;count++,shift+=2) |
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101 { |
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102 if (shift==8) |
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103 { |
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104 shift = 0; |
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105 ptr++; |
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106 *ptr = 0; |
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107 } |
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108 col = TUint8(GetGrayPixelEx(x+count,aScanlinePtr) >> 4); |
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109 TInt value=col/5; |
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110 col%=5; |
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111 if (col>2) col--; |
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112 if (hasharray[index]<TInt(col)) |
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113 value++; |
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114 value<<=shift; |
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115 *ptr|=value; |
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116 index^=1; |
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117 } |
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118 } |
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119 else |
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120 { |
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121 TUint8* ptrLimit = ptr + ((aLength + 3) >> 2); |
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122 while (ptr < ptrLimit) |
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123 { |
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124 TUint8 pixelGrayShade = TUint8(GetGrayPixelEx(x++,aScanlinePtr) >> 6); |
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125 pixelGrayShade |= TUint8((GetGrayPixelEx(x++,aScanlinePtr) >> 4) & 0x0c); |
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126 pixelGrayShade |= TUint8((GetGrayPixelEx(x++,aScanlinePtr) >> 2) & 0x30); |
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127 pixelGrayShade |= TUint8(GetGrayPixelEx(x++,aScanlinePtr) & 0xc0); |
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128 *ptr++ = pixelGrayShade; |
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129 } |
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130 } |
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131 } |
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132 |
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133 void CBitwiseBitmap::GetScanLineGray16(TDes8& aBuf,const TPoint& aPixel,TInt aLength,TUint32* aScanlinePtr) const |
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134 { |
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135 aLength=Min(aLength,(TInt)(aBuf.MaxLength()<<1)); |
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136 aBuf.SetLength((aLength + 1) >> 1); |
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137 |
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138 TUint8* ptr = (TUint8*)aBuf.Ptr(); |
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139 TUint8* ptrLimit = ptr + aBuf.Length(); |
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140 TInt x = aPixel.iX; |
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141 |
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142 if(iHeader.iBitsPerPixel == 1) |
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143 { |
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144 while (ptr < ptrLimit) |
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145 { |
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146 TUint8 pixelGrayShade = TUint8(COLOR_VALUE(aScanlinePtr, x) ? 0x0F : 0); |
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147 x++; |
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148 pixelGrayShade |= TUint8(COLOR_VALUE(aScanlinePtr, x) ? 0xF0 : 0); |
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149 x++; |
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150 *ptr++ = pixelGrayShade; |
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151 } |
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152 } |
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153 else |
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154 { |
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155 while (ptr < ptrLimit) |
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156 { |
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157 TUint8 pixelGrayShade = TUint8(GetGrayPixelEx(x++,aScanlinePtr) >> 4); |
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158 pixelGrayShade |= GetGrayPixelEx(x++,aScanlinePtr) & 0xf0; |
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159 *ptr++ = pixelGrayShade; |
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160 } |
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161 } |
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162 } |
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163 |
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164 void CBitwiseBitmap::GetScanLineGray256(TDes8& aBuf,const TPoint& aPixel,TInt aLength,TUint32* aScanlinePtr) const |
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165 { |
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166 aLength = Min(aLength,aBuf.MaxLength()); |
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167 aBuf.SetLength(aLength); |
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168 |
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169 TUint8* ptr = (TUint8*)aBuf.Ptr(); |
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170 TUint8* ptrLimit = ptr + aLength; |
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171 TInt xCoord = aPixel.iX; |
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172 |
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173 if(iHeader.iBitsPerPixel == 1) |
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174 { |
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175 while (ptr < ptrLimit) |
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176 { |
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177 *ptr++ = TUint8(COLOR_VALUE(aScanlinePtr, xCoord) ? 0xFF : 0); |
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178 xCoord++; |
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179 } |
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180 } |
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181 else |
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182 { |
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183 while (ptr < ptrLimit) |
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184 *ptr++ = GetGrayPixelEx(xCoord++,aScanlinePtr); |
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185 } |
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186 } |
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187 |
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188 void CBitwiseBitmap::GetScanLineColor16(TDes8& aBuf,const TPoint& aPixel,TInt aLength,TUint32* aScanlinePtr) const |
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189 { |
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190 aLength=Min(aLength,(TInt)(aBuf.MaxLength()<<1)); |
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191 aBuf.SetLength((aLength + 1) >> 1); |
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192 |
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193 TUint8* ptr = (TUint8*)aBuf.Ptr(); |
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194 TUint8* ptrLimit = ptr + aBuf.Length(); |
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195 TInt x = aPixel.iX; |
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196 |
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197 if(iHeader.iBitsPerPixel == 1) |
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198 { |
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199 while (ptr < ptrLimit) |
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200 { |
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201 TUint8 pixelGrayShade = TUint8(COLOR_VALUE(aScanlinePtr, x) ? 0x0F : 0); |
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202 x++; |
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203 pixelGrayShade |= TUint8(COLOR_VALUE(aScanlinePtr, x) ? 0xF0 : 0); |
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204 x++; |
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205 *ptr++ = pixelGrayShade; |
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206 } |
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207 } |
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208 else |
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209 { |
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210 while (ptr < ptrLimit) |
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211 { |
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212 TUint8 pixelGrayShade = TUint8(GetRgbPixelEx(x++,aScanlinePtr).Color16()); |
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213 pixelGrayShade |= GetRgbPixelEx(x++,aScanlinePtr).Color16() << 4; |
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214 *ptr++ = pixelGrayShade; |
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215 } |
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216 } |
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217 } |
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218 |
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219 void CBitwiseBitmap::GetScanLineColor256(TDes8& aBuf,const TPoint& aPixel,TInt aLength,TUint32* aScanlinePtr) const |
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220 { |
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221 aLength = Min(aLength,aBuf.MaxLength()); |
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222 aBuf.SetLength(aLength); |
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223 |
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224 TUint8* ptr = (TUint8*)aBuf.Ptr(); |
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225 TUint8* ptrLimit = ptr + aLength; |
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226 TInt xCoord = aPixel.iX; |
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227 |
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228 if(iHeader.iBitsPerPixel == 1) |
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229 { |
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230 while (ptr < ptrLimit) |
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231 { |
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232 *ptr++ = TUint8(COLOR_VALUE(aScanlinePtr, xCoord) ? 0xFF : 0); |
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233 xCoord++; |
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234 } |
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235 } |
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236 else |
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237 { |
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238 while (ptr < ptrLimit) |
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239 *ptr++ = TUint8(GetRgbPixelEx(xCoord++,aScanlinePtr).Color256()); |
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240 } |
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241 } |
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242 |
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243 void CBitwiseBitmap::GetScanLineColor4K(TDes8& aBuf,const TPoint& aPixel,TInt aLength,TUint32* aScanlinePtr) const |
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244 { |
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245 aLength = Min(aLength,aBuf.MaxLength() >> 1); |
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246 aBuf.SetLength(aLength << 1); |
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247 |
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248 TUint16* ptr = (TUint16*)aBuf.Ptr(); |
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249 const TUint16* ptrLimit = ptr + aLength; |
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250 TInt x = aPixel.iX; |
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251 |
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252 if(iHeader.iBitsPerPixel == 1) |
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253 { |
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254 while (ptr < ptrLimit) |
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255 { |
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256 *ptr++ = TUint16(COLOR_VALUE(aScanlinePtr, x) ? 0x0FFF : 0); |
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257 x++; |
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258 } |
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259 } |
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260 else |
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261 { |
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262 while (ptr < ptrLimit) |
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263 *ptr++ = TUint16(GetRgbPixelEx(x++,aScanlinePtr)._Color4K()); |
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264 } |
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265 } |
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266 |
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267 void CBitwiseBitmap::GetScanLineColor64K(TDes8& aBuf,const TPoint& aPixel,TInt aLength,TUint32* aScanlinePtr) const |
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268 { |
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269 aLength = Min(aLength,aBuf.MaxLength() >> 1); |
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270 aBuf.SetLength(aLength << 1); |
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271 |
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272 TUint16* ptr = (TUint16*)aBuf.Ptr(); |
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273 TUint16* ptrLimit = ptr + aLength; |
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274 TInt x = aPixel.iX; |
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275 |
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276 if(iHeader.iBitsPerPixel == 1) |
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277 { |
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278 while (ptr < ptrLimit) |
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279 { |
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280 *ptr++ = TUint16(COLOR_VALUE(aScanlinePtr, x) ? 0xFFFF : 0); |
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281 x++; |
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282 } |
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283 } |
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284 else if(iHeader.iBitsPerPixel == 12) |
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285 { |
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286 /* |
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287 // use lookup table for 12->16 conversion |
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288 TUint16* pixel4K = ((TUint16*) aScanlinePtr) + x; |
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289 while(ptr < ptrLimit) |
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290 { |
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291 // this takes the 12 bit value, this is a number between 0 and 4095, |
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292 // and looks up its corrosponding 16 bit value in the lookup table. |
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293 // the colour should be identical, and but just in a different format |
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294 // see below for an explaination of 12 & 16 bit colour values |
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295 *ptr++ = K12to16LUT[*pixel4K++]; |
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296 } |
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297 */ |
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298 /* This code uses logic rather than a lookup table |
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299 to convert from 12->16 bpp and can be used instead of the above code |
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300 if the 8k the lookup table uses becomes an issue |
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301 |
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302 12 bit colour |
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303 ------------- |
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304 The 12 bit colour format uses 4 bits for the red, green and blue values. |
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305 The colour is stored as a word with the most significant 4 bits having a |
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306 value of zero. |
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307 i.e. 0000RRRR GGGGBBBB where R,G & B represent single bits in the word. |
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308 |
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309 The code below labeled 'conversion of 4k colour...' changes the colour from |
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310 16 bit to 32 bit where each colour nibble in the 16 bit version is changed |
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311 to a byte in the 32 bit version e.g. |
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312 0000RRRR GGGGBBBB -> 00000000 RRRRRRRR GGGGGGGG BBBBBBBB |
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313 |
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314 |
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315 16 bit colour |
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316 ------------- |
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317 The 16 bit colour format uses all 16 bits to represent the required colour. |
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318 There are two possible 16 bit formats 5-5-5 and 5-6-5. |
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319 Symbian uses the 5-6-5 format, with this all 16 bits are used to make the colour |
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320 giving a possible value between 0..65535. The RGB components are divided up |
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321 as follows RRRR RGGG GGGB BBBB i.e. 5 bits for red and blue, and 6 for green. |
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322 |
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323 The code below labeled 'conversion to 64k' converts the colour from a 16 bit |
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324 0000 RRRR GGGG BBBB -> RRRR RGGG GGGB BBBB format. |
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325 */ |
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326 register TUint16* pixel4K = ((TUint16*) aScanlinePtr) + x; |
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327 while (ptr < ptrLimit) |
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328 { |
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329 // conversion of 4k colour from 16 to 32 bits |
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330 // this changes from a 16 to 32 bit value while keeping colour unchanged |
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331 register TUint16 pixelVal = *pixel4K++; |
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332 register TUint32 value32 = ((pixelVal & 0x0f00) >> 8) | |
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333 ((pixelVal & 0x00f0) << 4) | |
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334 ((pixelVal & 0x000f) << 16); |
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335 value32 |= (value32 << 4); |
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336 // conversion to 64k (RRRR RGGG GGGB BBBB) |
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337 // this will make the change from (16 bit) 4-4-4 bpp to 5-6-5 bpp format |
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338 register TUint32 color64K = ((value32 & 0x000000f8) << 8) | |
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339 ((value32 & 0x0000fc00) >> 5) | |
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340 ((value32 & 0x00f80000) >> 19); |
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341 // store new colour value |
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342 *ptr++ = static_cast <TUint16> (color64K); |
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343 } |
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344 } |
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345 else |
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346 { |
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347 while (ptr < ptrLimit) |
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348 *ptr++ = TUint16(GetRgbPixelEx(x++,aScanlinePtr)._Color64K()); |
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349 } |
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350 } |
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351 |
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352 void CBitwiseBitmap::GetScanLineColor16M(TDes8& aBuf,const TPoint& aPixel,TInt aLength,TUint32* aScanlinePtr) const |
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353 { |
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354 aLength = Min(aLength,aBuf.MaxLength() / 3); |
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355 aBuf.SetLength(aLength * 3); |
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356 |
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357 TUint8* ptr = (TUint8*)aBuf.Ptr(); |
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358 TUint8* ptrLimit = ptr + (aLength * 3); |
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359 TInt x = aPixel.iX; |
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360 |
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361 if(iHeader.iBitsPerPixel == 1) |
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362 { |
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363 while (ptr < ptrLimit) |
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364 { |
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365 const TUint8 color = TUint8(COLOR_VALUE(aScanlinePtr, x) ? 0xFF : 0); |
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366 *ptr++ = color; |
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367 *ptr++ = color; |
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368 *ptr++ = color; |
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369 x++; |
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370 } |
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371 } |
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372 else |
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373 { |
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374 GetRgbPixelExMany16M(aPixel.iX,aScanlinePtr,ptr,aLength); |
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375 } |
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376 } |
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377 |
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378 void CBitwiseBitmap::GetScanLineColor16MU(TDes8& aBuf,const TPoint& aPixel,TInt aLength,TUint32* aScanlinePtr) const |
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379 { |
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380 aLength = Min(aLength,aBuf.MaxLength() >> 2); |
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381 aBuf.SetLength(aLength << 2); |
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382 |
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383 TUint32* ptr = (TUint32*)aBuf.Ptr(); |
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384 |
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385 GetRgbPixelExMany(aPixel.iX,aScanlinePtr,ptr,aLength); |
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386 } |
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387 |
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388 void CBitwiseBitmap::GetScanLineColor16MA(TDes8& aBuf,const TPoint& aPixel,TInt aLength,TUint32* aScanlinePtr) const |
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389 { |
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390 aLength = Min(aLength,aBuf.MaxLength() >> 2); |
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391 aBuf.SetLength(aLength << 2); |
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392 |
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393 TUint32* ptr = (TUint32*)aBuf.Ptr(); |
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394 GetRgbPixelExMany(aPixel.iX,aScanlinePtr,ptr,aLength); |
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395 } |
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396 |
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397 /** |
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398 Get the scanline data into the destination buffer in the EColor16MAP format. |
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399 @param aDestBuf - destination buffer |
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400 @param aPixel - the start position of the scanline. |
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401 @param aLength - scanline length, as word length |
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402 @param aScanlinePtr - scanline pointer |
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403 */ |
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404 void CBitwiseBitmap::GetScanLineColor16MAP(TDes8& aDestBuf,const TPoint& aPixel,TInt aLength,TUint32* aScanlinePtr) const |
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405 { |
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406 aLength = Min(aLength, aDestBuf.MaxLength() >> 2); |
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407 aDestBuf.SetLength(aLength << 2); |
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408 TUint32* ptr = (TUint32*)aDestBuf.Ptr(); |
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409 GetRgbPixelExMany16MAP(aPixel.iX,aScanlinePtr,ptr,aLength); |
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410 } |
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411 |
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412 |
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413 void CBitwiseBitmap::GetScanLineColorRgb(TDes8& aBuf,const TPoint& aPixel,TInt aLength,TUint32* aScanlinePtr) const |
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414 { |
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415 aLength = Min(aLength,aBuf.MaxLength() / sizeof(TRgb)); |
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416 aBuf.SetLength(aLength * sizeof(TRgb)); |
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417 |
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418 TUint32* ptr = (TUint32*)aBuf.Ptr(); |
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419 GetRgbPixelExMany(aPixel.iX,aScanlinePtr,ptr,aLength); |
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420 } |
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421 |
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422 void CBitwiseBitmap::GetScanLineExBits(TDes8& aBuf,TInt aX,TInt aLength,TUint32* aScanlinePtr) const |
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423 { |
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424 TInt bitshift = 1; |
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425 TInt pixelsPerWord = 8; |
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426 TInt roundingmask = ~0x7; |
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427 TInt logbpp = 2; |
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428 TInt roundupfactor = 1; |
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429 const TDisplayMode displayMode = iSettings.CurrentDisplayMode(); |
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430 |
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431 switch(displayMode) |
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432 { |
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433 case EGray16: |
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434 case EColor16: |
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435 break; // set by default |
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436 case EGray4: |
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437 { |
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438 bitshift = 2; |
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439 pixelsPerWord = 16; |
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440 roundingmask = ~0xf; |
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441 logbpp = 1; |
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442 roundupfactor = 3; |
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443 break; |
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444 } |
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445 case EGray2: |
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446 { |
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447 bitshift = 3; |
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448 pixelsPerWord = 32; |
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449 roundingmask = ~0x1f; |
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450 logbpp = 0; |
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451 roundupfactor = 7; |
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452 break; |
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453 } |
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454 default: |
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455 Panic(EFbsBitmapInvalidMode); |
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456 } |
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457 |
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458 aLength = Min(aLength,aBuf.MaxLength() << bitshift); |
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459 aBuf.SetLength((aLength + roundupfactor) >> bitshift); |
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460 |
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461 TUint32* ptr = (TUint32*)aBuf.Ptr(); // guaranteed to be word aligned by the calling function |
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462 TInt startlong = aX & roundingmask; |
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463 TInt finishlong = (aX + aLength + pixelsPerWord - 1) & roundingmask; |
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464 bitshift += 2; // Convert pixels per byte shift to pixels per word shift |
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465 TUint32* wordptr = aScanlinePtr + (startlong >> bitshift); |
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466 TInt wordLength = (finishlong - startlong) >> bitshift; |
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467 TUint32* wordptrLimit = wordptr + wordLength; |
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468 |
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469 const TInt destinationWords = Min(aBuf.MaxLength() >> 2,wordLength); |
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470 TUint32* ptrlimit = ptr + destinationWords; |
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471 |
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472 TInt offset = (aX - startlong) << logbpp; |
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473 |
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474 if (offset) |
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475 { |
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476 TInt offsetextra = 32-offset; |
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477 TUint32 data = *wordptr++; |
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478 data >>= offset; |
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479 |
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480 while (ptr < ptrlimit - 1) |
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481 { |
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482 TUint32 tmp = *wordptr++; |
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483 data |= tmp << offsetextra; |
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484 *ptr++ = data; |
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485 data = tmp >> offset; |
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486 } |
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487 |
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488 if (wordptr < wordptrLimit) |
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489 *ptr = data | (*wordptr << offsetextra); |
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490 else |
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491 *ptr = data; |
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492 } |
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493 else |
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494 { |
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495 while (ptr < ptrlimit) |
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496 *ptr++ = *wordptr++; |
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497 |
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498 // if the buffer isn't a whole number of words long, |
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499 // we need to copy the remaining bytes |
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500 const TInt bytesRemaining = aBuf.Length() - (destinationWords * sizeof(TUint32)); |
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501 if (bytesRemaining > 0) |
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502 Mem::Copy(ptr,wordptr,bytesRemaining); |
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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 void CBitwiseBitmap::GetScanLineExBytes(TDes8& aBuf,TInt aX,TInt aLength,TUint32* aScanlinePtr) const |
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508 { |
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509 TInt numberOfBytesToCopy = 0; |
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510 TUint8* ptr = (TUint8*)aScanlinePtr; |
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511 TDisplayMode displayMode = iSettings.CurrentDisplayMode(); |
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512 switch(displayMode) |
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513 { |
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514 case EGray256: |
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515 case EColor256: |
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516 { |
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517 aLength = Min(aLength,aBuf.MaxLength()); |
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518 numberOfBytesToCopy = aLength; |
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519 ptr += aX; |
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520 break; |
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521 } |
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522 case EColor4K: |
|
523 case EColor64K: |
|
524 { |
|
525 aLength = Min(aLength,aBuf.MaxLength() / 2); |
|
526 numberOfBytesToCopy = aLength * 2; |
|
527 ptr += (aX << 1); |
|
528 break; |
|
529 } |
|
530 case EColor16M: |
|
531 { |
|
532 aLength = Min(aLength,aBuf.MaxLength() / 3); |
|
533 numberOfBytesToCopy = aLength * 3; |
|
534 ptr += (aX * 3); |
|
535 break; |
|
536 } |
|
537 case EColor16MU: |
|
538 case EColor16MA: |
|
539 case EColor16MAP: |
|
540 { |
|
541 aLength = Min(aLength,aBuf.MaxLength() / 4); |
|
542 numberOfBytesToCopy = aLength * 4; |
|
543 ptr += (aX * 4); |
|
544 break; |
|
545 } |
|
546 default: |
|
547 Panic(EFbsBitmapInvalidMode); |
|
548 } |
|
549 |
|
550 aBuf.SetLength(numberOfBytesToCopy); |
|
551 |
|
552 Mem::Copy((TAny*)aBuf.Ptr(),ptr,numberOfBytesToCopy); |
|
553 } |
|
554 |
|
555 void CBitwiseBitmap::DoStretchScanLine(TDes8& aBuf,TInt x,TInt y,TInt aClipStrchX, |
|
556 TInt aClipStrchLen,TInt aStretchLength,TInt aOrgX,TInt aOrgLen, |
|
557 const TPoint& aDitherOffset,TDisplayMode aDispMode,TUint32* aBase, |
|
558 TLineScanningPosition& aLineScanningPosition) const |
|
559 { |
|
560 TInt lastValue = 0; |
|
561 TUint32* bufptr=(TUint32*)((TInt)(&aBuf[0]+3)&~3); |
|
562 TUint32* buflimit=bufptr; |
|
563 TUint32* slptr=NULL; |
|
564 TPoint pixel(aOrgX,y); |
|
565 const TDisplayMode displayMode = iSettings.CurrentDisplayMode(); |
|
566 GetScanLinePtr(slptr, aOrgLen, pixel,aBase, aLineScanningPosition); |
|
567 if (!slptr) |
|
568 { |
|
569 WhiteFill((TUint8*)aBuf.Ptr(),aBuf.MaxLength(),displayMode); |
|
570 return; |
|
571 } |
|
572 |
|
573 TInt lastcoord=-1; |
|
574 TLinearDDA stretchmap; |
|
575 TPoint coordmap(aOrgX,0); |
|
576 stretchmap.Construct(coordmap,coordmap+TPoint(aOrgLen,aStretchLength),TLinearDDA::ELeft); |
|
577 coordmap.iY=aClipStrchX; |
|
578 if (aClipStrchX>0) stretchmap.JumpToYCoord(coordmap.iX,coordmap.iY); |
|
579 else stretchmap.SingleStep(coordmap); |
|
580 switch(aDispMode) |
|
581 { |
|
582 case EGray4: |
|
583 { |
|
584 aClipStrchLen=Min(aClipStrchLen,(TInt)((aBuf.MaxLength()>>2)<<4)); |
|
585 aBuf.SetLength((aClipStrchLen+3)>>2); |
|
586 buflimit+=(aBuf.Length()+3)>>2; |
|
587 if (displayMode == EGray16) |
|
588 { |
|
589 TInt index=((aDitherOffset.iY&1)<<1)+((aDitherOffset.iX+x)&1); |
|
590 while(bufptr<buflimit) |
|
591 { |
|
592 TInt shift=0; |
|
593 *bufptr=0; |
|
594 while(shift<32) |
|
595 { |
|
596 if (coordmap.iX>lastcoord) |
|
597 { |
|
598 lastValue=HashTo2bpp(GetGrayPixelEx(coordmap.iX,slptr),index); |
|
599 lastcoord=coordmap.iX; |
|
600 } |
|
601 *bufptr|=(lastValue<<shift); |
|
602 index^=1; |
|
603 shift+=2; |
|
604 if (stretchmap.SingleStep(coordmap)) break; |
|
605 } |
|
606 bufptr++; |
|
607 } |
|
608 } |
|
609 else |
|
610 { |
|
611 while (bufptr < buflimit) |
|
612 { |
|
613 TInt shift = 0; |
|
614 *bufptr = 0; |
|
615 while (shift < 32) |
|
616 { |
|
617 if (coordmap.iX>lastcoord) |
|
618 { |
|
619 lastValue = GetGrayPixelEx(coordmap.iX,slptr) >> 6; |
|
620 lastcoord = coordmap.iX; |
|
621 } |
|
622 *bufptr |= (lastValue << shift); |
|
623 shift += 2; |
|
624 if (stretchmap.SingleStep(coordmap)) break; |
|
625 } |
|
626 bufptr++; |
|
627 } |
|
628 } |
|
629 break; |
|
630 } |
|
631 case EGray16: |
|
632 { |
|
633 aClipStrchLen=Min(aClipStrchLen,(TInt)((aBuf.MaxLength()>>2)<<3)); |
|
634 aBuf.SetLength((aClipStrchLen+1)>>1); |
|
635 buflimit+=(aBuf.Length()+3)>>2; |
|
636 while(bufptr<buflimit) |
|
637 { |
|
638 TInt shift=0; |
|
639 *bufptr=0; |
|
640 while(shift<32) |
|
641 { |
|
642 if (coordmap.iX>lastcoord) |
|
643 { |
|
644 lastValue = GetGrayPixelEx(coordmap.iX,slptr) >> 4; |
|
645 lastcoord=coordmap.iX; |
|
646 } |
|
647 *bufptr |= lastValue << shift; |
|
648 shift+=4; |
|
649 if (stretchmap.SingleStep(coordmap)) break; |
|
650 } |
|
651 bufptr++; |
|
652 } |
|
653 break; |
|
654 } |
|
655 case EColor16: |
|
656 { |
|
657 aClipStrchLen=Min(aClipStrchLen,(TInt)((aBuf.MaxLength()>>2)<<3)); |
|
658 aBuf.SetLength((aClipStrchLen+1)>>1); |
|
659 buflimit+=(aBuf.Length()+3)>>2; |
|
660 while(bufptr<buflimit) |
|
661 { |
|
662 TInt shift=0; |
|
663 *bufptr=0; |
|
664 while(shift<32) |
|
665 { |
|
666 if (coordmap.iX>lastcoord) |
|
667 { |
|
668 lastValue = GetRgbPixelEx(coordmap.iX,slptr).Color16(); |
|
669 lastcoord = coordmap.iX; |
|
670 } |
|
671 *bufptr |= lastValue << shift; |
|
672 shift+=4; |
|
673 if (stretchmap.SingleStep(coordmap)) break; |
|
674 } |
|
675 bufptr++; |
|
676 } |
|
677 break; |
|
678 } |
|
679 case EGray256: |
|
680 { |
|
681 aClipStrchLen = Min(aClipStrchLen,(TInt)(aBuf.MaxLength() & ~3)); |
|
682 aBuf.SetLength(aClipStrchLen); |
|
683 buflimit += (aBuf.Length() + 3) >> 2; |
|
684 |
|
685 while (bufptr < buflimit) |
|
686 { |
|
687 TInt shift=0; |
|
688 *bufptr=0; |
|
689 while(shift<32) |
|
690 { |
|
691 if (coordmap.iX>lastcoord) |
|
692 { |
|
693 lastValue = GetGrayPixelEx(coordmap.iX,slptr); |
|
694 lastcoord=coordmap.iX; |
|
695 } |
|
696 *bufptr |= lastValue << shift; |
|
697 shift += 8; |
|
698 if (stretchmap.SingleStep(coordmap)) |
|
699 break; |
|
700 } |
|
701 bufptr++; |
|
702 } |
|
703 break; |
|
704 } |
|
705 case EColor256: |
|
706 { |
|
707 aClipStrchLen = Min(aClipStrchLen,(TInt)(aBuf.MaxLength() & ~3)); |
|
708 aBuf.SetLength(aClipStrchLen); |
|
709 buflimit += (aBuf.Length() + 3) >> 2; |
|
710 |
|
711 while (bufptr < buflimit) |
|
712 { |
|
713 TInt shift=0; |
|
714 *bufptr=0; |
|
715 while(shift<32) |
|
716 { |
|
717 if (coordmap.iX>lastcoord) |
|
718 { |
|
719 lastValue = TUint8(GetRgbPixelEx(coordmap.iX,slptr).Color256()); |
|
720 lastcoord = coordmap.iX; |
|
721 } |
|
722 *bufptr |= lastValue << shift; |
|
723 shift += 8; |
|
724 if (stretchmap.SingleStep(coordmap)) |
|
725 break; |
|
726 } |
|
727 bufptr++; |
|
728 } |
|
729 break; |
|
730 } |
|
731 case EColor4K: |
|
732 { |
|
733 aClipStrchLen = Min(aClipStrchLen,aBuf.MaxLength() >> 1); |
|
734 aBuf.SetLength(aClipStrchLen << 1); |
|
735 buflimit += (aBuf.Length() + 3) >> 2; |
|
736 |
|
737 while (bufptr < buflimit) |
|
738 { |
|
739 if (coordmap.iX>lastcoord) |
|
740 { |
|
741 lastValue = GetRgbPixelEx(coordmap.iX,slptr)._Color4K(); |
|
742 lastcoord=coordmap.iX; |
|
743 } |
|
744 *bufptr = lastValue; |
|
745 if (stretchmap.SingleStep(coordmap)) |
|
746 break; |
|
747 if (coordmap.iX>lastcoord) |
|
748 { |
|
749 lastValue = GetRgbPixelEx(coordmap.iX,slptr)._Color4K(); |
|
750 lastcoord=coordmap.iX; |
|
751 } |
|
752 *bufptr |= lastValue << 16; |
|
753 if (stretchmap.SingleStep(coordmap)) |
|
754 break; |
|
755 bufptr++; |
|
756 } |
|
757 break; |
|
758 } |
|
759 case EColor64K: |
|
760 { |
|
761 aClipStrchLen = Min(aClipStrchLen,aBuf.MaxLength() >> 1); |
|
762 aBuf.SetLength(aClipStrchLen << 1); |
|
763 buflimit += (aBuf.Length() + 3) >> 2; |
|
764 |
|
765 while (bufptr < buflimit) |
|
766 { |
|
767 if (coordmap.iX>lastcoord) |
|
768 { |
|
769 lastValue = GetRgbPixelEx(coordmap.iX,slptr)._Color64K(); |
|
770 lastcoord=coordmap.iX; |
|
771 } |
|
772 *bufptr = lastValue; |
|
773 if (stretchmap.SingleStep(coordmap)) |
|
774 break; |
|
775 if (coordmap.iX>lastcoord) |
|
776 { |
|
777 lastValue = GetRgbPixelEx(coordmap.iX,slptr)._Color64K(); |
|
778 lastcoord=coordmap.iX; |
|
779 } |
|
780 *bufptr |= lastValue << 16; |
|
781 if (stretchmap.SingleStep(coordmap)) |
|
782 break; |
|
783 bufptr++; |
|
784 } |
|
785 break; |
|
786 } |
|
787 case EColor16M: // Destination Mode |
|
788 { |
|
789 // Optimisation: Both of conditions on 32bpp and 24bpp were added to avoid to use |
|
790 // GetRgbPixelEx() for each pixel |
|
791 aClipStrchLen = Min(aClipStrchLen,aBuf.MaxLength() / 3); |
|
792 aBuf.SetLength(aClipStrchLen * 3); |
|
793 TUint8* ptr = (TUint8*)bufptr; |
|
794 TUint8* ptrLimit = ptr + aBuf.Length(); |
|
795 |
|
796 if (iHeader.iBitsPerPixel == 32) // 32bpp source image => color |
|
797 { |
|
798 TInt lastColor = 0; |
|
799 if(displayMode == EColor16MAP) |
|
800 { |
|
801 const TUint16* normTable = PtrTo16BitNormalisationTable(); |
|
802 while (ptr < ptrLimit) |
|
803 { |
|
804 if (coordmap.iX > lastcoord) |
|
805 { |
|
806 lastColor = PMA2NonPMAPixel(*(slptr + coordmap.iX), normTable); |
|
807 lastcoord = coordmap.iX; |
|
808 } |
|
809 *ptr++ = TUint8(lastColor); |
|
810 *ptr++ = TUint8(lastColor >> 8); |
|
811 *ptr++ = TUint8(lastColor >> 16); |
|
812 if (stretchmap.SingleStep(coordmap)) |
|
813 break; |
|
814 } |
|
815 } |
|
816 else{ |
|
817 while (ptr < ptrLimit) |
|
818 { |
|
819 if (coordmap.iX > lastcoord) |
|
820 { |
|
821 lastColor = *(slptr + coordmap.iX); |
|
822 lastcoord = coordmap.iX; |
|
823 } |
|
824 *ptr++ = TUint8(lastColor); |
|
825 *ptr++ = TUint8(lastColor >> 8); |
|
826 *ptr++ = TUint8(lastColor >> 16); |
|
827 if (stretchmap.SingleStep(coordmap)) |
|
828 break; |
|
829 } |
|
830 } |
|
831 } |
|
832 else if (iHeader.iBitsPerPixel == 24) //24bpp source image => color |
|
833 { |
|
834 TInt lastColor = 0; |
|
835 while (ptr < ptrLimit) |
|
836 { |
|
837 if (coordmap.iX > lastcoord) |
|
838 { |
|
839 TUint8* scanLineBytePointer = (TUint8*)slptr + coordmap.iX*3; |
|
840 lastColor = TUint8(*scanLineBytePointer); |
|
841 scanLineBytePointer++; |
|
842 lastColor |= TUint8(*scanLineBytePointer) << 8; |
|
843 scanLineBytePointer++; |
|
844 lastColor |= TUint8(*scanLineBytePointer) << 16; |
|
845 lastcoord = coordmap.iX; |
|
846 } |
|
847 *ptr++ = TUint8(lastColor); |
|
848 *ptr++ = TUint8(lastColor >> 8); |
|
849 *ptr++ = TUint8(lastColor >> 16); |
|
850 if (stretchmap.SingleStep(coordmap)) |
|
851 break; |
|
852 } |
|
853 } |
|
854 else |
|
855 { |
|
856 TRgb lastColor; |
|
857 while (ptr < ptrLimit) |
|
858 { |
|
859 if (coordmap.iX>lastcoord) |
|
860 { |
|
861 lastColor = GetRgbPixelEx(coordmap.iX,slptr); |
|
862 lastcoord=coordmap.iX; |
|
863 } |
|
864 TInt color16M = lastColor._Color16M(); |
|
865 *ptr++ = TUint8(color16M); |
|
866 *ptr++ = TUint8(color16M >> 8); |
|
867 *ptr++ = TUint8(color16M >> 16); |
|
868 if (stretchmap.SingleStep(coordmap)) |
|
869 break; |
|
870 } |
|
871 } |
|
872 break; |
|
873 } |
|
874 case ERgb: |
|
875 { |
|
876 aClipStrchLen = Min(aClipStrchLen,aBuf.MaxLength() / sizeof(TRgb)); |
|
877 aBuf.SetLength(aClipStrchLen * sizeof(TRgb)); |
|
878 TRgb* pixelPtr = (TRgb*)bufptr; |
|
879 TRgb* pixelPtrLimit = pixelPtr + aClipStrchLen; |
|
880 TRgb lastColor; |
|
881 |
|
882 while (pixelPtr < pixelPtrLimit) |
|
883 { |
|
884 if (coordmap.iX > lastcoord) |
|
885 { |
|
886 lastColor = GetRgbPixelEx(coordmap.iX,slptr); |
|
887 lastcoord = coordmap.iX; |
|
888 } |
|
889 *pixelPtr++ = lastColor; |
|
890 if (stretchmap.SingleStep(coordmap)) |
|
891 break; |
|
892 } |
|
893 break; |
|
894 } |
|
895 case EColor16MU: // Destination Mode |
|
896 { |
|
897 // Optimisation: The condition 32bpp was added to avoid to use |
|
898 //GetRgbPixelEx() for each pixel (construction of a TRgb object each time) |
|
899 aClipStrchLen = Min(aClipStrchLen,aBuf.MaxLength() >> 2); |
|
900 aBuf.SetLength(aClipStrchLen << 2); |
|
901 TInt32* pixelPtr = (TInt32*)bufptr; |
|
902 TInt32* pixelPtrLimit = pixelPtr + aClipStrchLen; |
|
903 |
|
904 if (iHeader.iBitsPerPixel == 32) //32bpp source image => color |
|
905 { |
|
906 TInt lastColor = 0; |
|
907 if(displayMode == EColor16MAP) |
|
908 { |
|
909 const TUint16* normTable = PtrTo16BitNormalisationTable(); |
|
910 while (pixelPtr < pixelPtrLimit) |
|
911 { |
|
912 if (coordmap.iX > lastcoord) |
|
913 { |
|
914 lastColor = PMA2NonPMAPixel(*(slptr + coordmap.iX), normTable); |
|
915 lastcoord = coordmap.iX; |
|
916 } |
|
917 *pixelPtr++ = (lastColor | 0xff000000);//BGR0 (Blue/Green/Red) as little endian byte order |
|
918 if (stretchmap.SingleStep(coordmap)) |
|
919 break; |
|
920 } |
|
921 } |
|
922 else{ |
|
923 while (pixelPtr < pixelPtrLimit) |
|
924 { |
|
925 if (coordmap.iX > lastcoord) |
|
926 { |
|
927 lastColor = *(slptr + coordmap.iX); |
|
928 lastcoord = coordmap.iX; |
|
929 } |
|
930 *pixelPtr++ = (lastColor | 0xff000000);//BGR0 (Blue/Green/Red) as little endian byte order |
|
931 if (stretchmap.SingleStep(coordmap)) |
|
932 break; |
|
933 } |
|
934 } |
|
935 } |
|
936 |
|
937 else if (iHeader.iBitsPerPixel == 24) //24bpp source image => color |
|
938 { |
|
939 TInt lastColor = 0; |
|
940 while (pixelPtr < pixelPtrLimit) |
|
941 { |
|
942 if (coordmap.iX > lastcoord) |
|
943 { |
|
944 TUint8* scanLineBytePointer = (TUint8*)slptr + coordmap.iX*3; |
|
945 lastColor = TUint8(*scanLineBytePointer); |
|
946 scanLineBytePointer++; |
|
947 lastColor |= TUint8(*scanLineBytePointer) << 8; |
|
948 scanLineBytePointer++; |
|
949 lastColor |= TUint8(*scanLineBytePointer) << 16; |
|
950 lastcoord = coordmap.iX; |
|
951 } |
|
952 *pixelPtr++ = (lastColor | 0xff000000); |
|
953 if (stretchmap.SingleStep(coordmap)) |
|
954 break; |
|
955 } |
|
956 } |
|
957 else if (iHeader.iBitsPerPixel == 16) //16bpp source image => color |
|
958 { |
|
959 TInt lastColor = 0; |
|
960 while (pixelPtr < pixelPtrLimit) |
|
961 { |
|
962 if (coordmap.iX > lastcoord) |
|
963 { |
|
964 TUint rawColor = *(((TUint16*)slptr) + coordmap.iX); |
|
965 TInt red = (rawColor & 0xF800)>>8; |
|
966 red += red>>5; |
|
967 TInt green = (rawColor & 0x07E0)>>3; |
|
968 green += green>>6; |
|
969 TInt blue = (rawColor & 0x001F)<<3; |
|
970 blue += blue>>5; |
|
971 lastColor = 0xff000000 | (red << 16) | (green << 8) | blue; |
|
972 lastcoord = coordmap.iX; |
|
973 } |
|
974 *pixelPtr++ = lastColor; |
|
975 if (stretchmap.SingleStep(coordmap)) |
|
976 break; |
|
977 } |
|
978 } |
|
979 else |
|
980 { |
|
981 TRgb lastColor; |
|
982 while (pixelPtr < pixelPtrLimit) |
|
983 { |
|
984 if (coordmap.iX > lastcoord) |
|
985 { |
|
986 lastColor = GetRgbPixelEx(coordmap.iX,slptr); |
|
987 lastcoord = coordmap.iX; |
|
988 } |
|
989 *pixelPtr++ = (lastColor._Color16MU() | 0xff000000);//BGR0 (Blue/Green/Red) as little endian byte order |
|
990 if (stretchmap.SingleStep(coordmap)) |
|
991 break; |
|
992 } |
|
993 } |
|
994 break; |
|
995 } |
|
996 case EColor16MA: |
|
997 { |
|
998 // Optimisation: The condition 32bpp was added to avoid to use |
|
999 // GetRgbPixelEx() for each pixel (construction of a TRgb object each time) |
|
1000 aClipStrchLen = Min(aClipStrchLen,aBuf.MaxLength() >> 2); |
|
1001 aBuf.SetLength(aClipStrchLen << 2); |
|
1002 TInt32* pixelPtr = (TInt32*)bufptr; |
|
1003 TInt32* pixelPtrLimit = pixelPtr + aClipStrchLen; |
|
1004 const TUint16* normTable = PtrTo16BitNormalisationTable(); |
|
1005 if (iHeader.iBitsPerPixel == 32) //32bpp source image => color |
|
1006 { |
|
1007 TInt lastColor = 0; |
|
1008 if(displayMode == EColor16MAP) |
|
1009 { |
|
1010 while (pixelPtr < pixelPtrLimit) |
|
1011 { |
|
1012 if (coordmap.iX > lastcoord) |
|
1013 { |
|
1014 lastColor = PMA2NonPMAPixel(*(slptr + coordmap.iX), normTable); |
|
1015 lastcoord = coordmap.iX; |
|
1016 } |
|
1017 *pixelPtr++ = lastColor;//BGRA (Blue/Green/Red) as little endian byte order |
|
1018 if (stretchmap.SingleStep(coordmap)) |
|
1019 break; |
|
1020 } |
|
1021 } |
|
1022 else |
|
1023 { |
|
1024 while (pixelPtr < pixelPtrLimit) |
|
1025 { |
|
1026 if (coordmap.iX > lastcoord) |
|
1027 { |
|
1028 lastColor = *(slptr + coordmap.iX); |
|
1029 lastcoord = coordmap.iX; |
|
1030 } |
|
1031 *pixelPtr++ = lastColor; |
|
1032 if (stretchmap.SingleStep(coordmap)) |
|
1033 break; |
|
1034 } |
|
1035 } |
|
1036 } |
|
1037 else if (iHeader.iBitsPerPixel == 24) //24bpp source image => color |
|
1038 { |
|
1039 TInt lastColor = 0; |
|
1040 while (pixelPtr < pixelPtrLimit) |
|
1041 { |
|
1042 if (coordmap.iX > lastcoord) |
|
1043 { |
|
1044 TUint8* scanLineBytePointer = (TUint8*)slptr + coordmap.iX*3; |
|
1045 lastColor = TUint8(*scanLineBytePointer); |
|
1046 scanLineBytePointer++; |
|
1047 lastColor |= TUint8(*scanLineBytePointer) << 8; |
|
1048 scanLineBytePointer++; |
|
1049 lastColor |= TUint8(*scanLineBytePointer) << 16; |
|
1050 lastcoord = coordmap.iX; |
|
1051 } |
|
1052 *pixelPtr++ = (lastColor | 0xff000000); |
|
1053 if (stretchmap.SingleStep(coordmap)) |
|
1054 break; |
|
1055 } |
|
1056 } |
|
1057 else if (iHeader.iBitsPerPixel == 16) //16bpp source image => color |
|
1058 { |
|
1059 TInt lastColor = 0; |
|
1060 while (pixelPtr < pixelPtrLimit) |
|
1061 { |
|
1062 if (coordmap.iX > lastcoord) |
|
1063 { |
|
1064 TUint rawColor = *(((TUint16*)slptr) + coordmap.iX); |
|
1065 TInt red = (rawColor & 0xF800)>>8; |
|
1066 red += red>>5; |
|
1067 TInt green = (rawColor & 0x07E0)>>3; |
|
1068 green += green>>6; |
|
1069 TInt blue = (rawColor & 0x001F)<<3; |
|
1070 blue += blue>>5; |
|
1071 lastColor = 0xff000000 | (red << 16) | (green << 8) | blue; |
|
1072 lastcoord = coordmap.iX; |
|
1073 } |
|
1074 *pixelPtr++ = lastColor; |
|
1075 if (stretchmap.SingleStep(coordmap)) |
|
1076 break; |
|
1077 } |
|
1078 } |
|
1079 else |
|
1080 { |
|
1081 TRgb lastColor; |
|
1082 |
|
1083 while (pixelPtr < pixelPtrLimit) |
|
1084 { |
|
1085 if (coordmap.iX > lastcoord) |
|
1086 { |
|
1087 lastColor = GetRgbPixelEx(coordmap.iX,slptr); |
|
1088 lastcoord = coordmap.iX; |
|
1089 } |
|
1090 *pixelPtr++ = lastColor._Color16MA();//BGRA (Blue/Green/Red) as little endian byte order |
|
1091 if (stretchmap.SingleStep(coordmap)) |
|
1092 break; |
|
1093 } |
|
1094 } |
|
1095 break; |
|
1096 } |
|
1097 case EColor16MAP: |
|
1098 { //if alpha is not available, assign 255 as alpha (opaque). |
|
1099 aClipStrchLen = Min(aClipStrchLen,aBuf.MaxLength() >> 2); |
|
1100 aBuf.SetLength(aClipStrchLen << 2); |
|
1101 TInt32* pixelPtr = (TInt32*)bufptr; |
|
1102 TInt32* pixelPtrLimit = pixelPtr + aClipStrchLen; |
|
1103 if (iHeader.iBitsPerPixel == 32) //32bpp source image => color |
|
1104 { |
|
1105 TInt lastColor = 0; |
|
1106 //pre-multiply if alpha IS available. |
|
1107 if(displayMode == EColor16MA) |
|
1108 { |
|
1109 while (pixelPtr < pixelPtrLimit) |
|
1110 { |
|
1111 if (coordmap.iX > lastcoord) |
|
1112 { |
|
1113 lastColor = NonPMA2PMAPixel(*(slptr + coordmap.iX)); |
|
1114 lastcoord = coordmap.iX; |
|
1115 } |
|
1116 *pixelPtr++ = lastColor;//BGRA (Blue/Green/Red) as little endian byte order |
|
1117 if (stretchmap.SingleStep(coordmap)) |
|
1118 break; |
|
1119 } |
|
1120 } |
|
1121 else if(displayMode == EColor16MU) |
|
1122 { |
|
1123 while (pixelPtr < pixelPtrLimit) |
|
1124 { |
|
1125 if (coordmap.iX > lastcoord) |
|
1126 { |
|
1127 //do not want to convert to non pma, since keep transparency |
|
1128 //e.g. alpha 0.5, red 0.5. Want to keep red as 0.5 since it |
|
1129 //is not fully red. For 16MA convert to 1, and keep 0.5 alpha |
|
1130 lastColor = (*(slptr + coordmap.iX))|0xff000000; |
|
1131 lastcoord = coordmap.iX; |
|
1132 } |
|
1133 *pixelPtr++ = lastColor;//BGRA (Blue/Green/Red) as little endian byte order |
|
1134 if (stretchmap.SingleStep(coordmap)) |
|
1135 break; |
|
1136 } |
|
1137 } |
|
1138 else |
|
1139 { |
|
1140 while (pixelPtr < pixelPtrLimit) |
|
1141 { |
|
1142 if (coordmap.iX > lastcoord) |
|
1143 { |
|
1144 lastColor = *(slptr + coordmap.iX); |
|
1145 lastcoord = coordmap.iX; |
|
1146 } |
|
1147 *pixelPtr++ = lastColor; |
|
1148 if (stretchmap.SingleStep(coordmap)) |
|
1149 break; |
|
1150 } |
|
1151 } |
|
1152 } |
|
1153 else if (iHeader.iBitsPerPixel == 24) //24bpp source image => color |
|
1154 { |
|
1155 TInt lastColor = 0; |
|
1156 while (pixelPtr < pixelPtrLimit) |
|
1157 { |
|
1158 if (coordmap.iX > lastcoord) |
|
1159 { |
|
1160 TUint8* scanLineBytePointer = (TUint8*)slptr + coordmap.iX*3; |
|
1161 lastColor = TUint8(*scanLineBytePointer); |
|
1162 scanLineBytePointer++; |
|
1163 lastColor |= TUint8(*scanLineBytePointer) << 8; |
|
1164 scanLineBytePointer++; |
|
1165 lastColor |= TUint8(*scanLineBytePointer) << 16; |
|
1166 lastcoord = coordmap.iX; |
|
1167 } |
|
1168 *pixelPtr++ = (lastColor | 0xff000000); |
|
1169 if (stretchmap.SingleStep(coordmap)) |
|
1170 break; |
|
1171 } |
|
1172 } |
|
1173 else if (iHeader.iBitsPerPixel == 16) //16bpp source image => color |
|
1174 { |
|
1175 TInt lastColor = 0; |
|
1176 while (pixelPtr < pixelPtrLimit) |
|
1177 { |
|
1178 if (coordmap.iX > lastcoord) |
|
1179 { |
|
1180 TUint rawColor = *(((TUint16*)slptr) + coordmap.iX); |
|
1181 TInt red = (rawColor & 0xF800)>>8; |
|
1182 red += red>>5; |
|
1183 TInt green = (rawColor & 0x07E0)>>3; |
|
1184 green += green>>6; |
|
1185 TInt blue = (rawColor & 0x001F)<<3; |
|
1186 blue += blue>>5; |
|
1187 lastColor = 0xff000000 | (red << 16) | (green << 8) | blue; |
|
1188 lastcoord = coordmap.iX; |
|
1189 } |
|
1190 *pixelPtr++ = lastColor; |
|
1191 if (stretchmap.SingleStep(coordmap)) |
|
1192 break; |
|
1193 } |
|
1194 } |
|
1195 else |
|
1196 { |
|
1197 TRgb lastColor; |
|
1198 |
|
1199 while (pixelPtr < pixelPtrLimit) |
|
1200 { |
|
1201 if (coordmap.iX > lastcoord) |
|
1202 { |
|
1203 lastColor = GetRgbPixelEx(coordmap.iX,slptr); |
|
1204 lastcoord = coordmap.iX; |
|
1205 } |
|
1206 *pixelPtr++ = lastColor._Color16MA();//BGRA (Blue/Green/Red) as little endian byte order |
|
1207 if (stretchmap.SingleStep(coordmap)) |
|
1208 break; |
|
1209 } |
|
1210 } |
|
1211 break; |
|
1212 } |
|
1213 case EGray2: |
|
1214 { |
|
1215 TBool oddx=(aDitherOffset.iX&1); |
|
1216 TBool oddy=(aDitherOffset.iY&1); |
|
1217 aClipStrchLen=Min(aClipStrchLen,(TInt)((aBuf.MaxLength()>>2)<<5)); |
|
1218 aBuf.SetLength((aClipStrchLen+7)>>3); |
|
1219 buflimit+=(aBuf.Length()+3)>>2; |
|
1220 while(bufptr<buflimit) |
|
1221 { |
|
1222 TUint32 mask=1; |
|
1223 *bufptr=0; |
|
1224 while(mask) |
|
1225 { |
|
1226 if (coordmap.iX > lastcoord) |
|
1227 { |
|
1228 lastValue = GetGrayPixelEx(coordmap.iX,slptr); |
|
1229 lastcoord = coordmap.iX; |
|
1230 } |
|
1231 if (HashTo1bpp(lastValue,oddx,oddy)) |
|
1232 *bufptr|=mask; |
|
1233 mask<<=1; |
|
1234 oddx^=1; |
|
1235 if (stretchmap.SingleStep(coordmap)) break; |
|
1236 } |
|
1237 bufptr++; |
|
1238 } |
|
1239 break; |
|
1240 } |
|
1241 default: |
|
1242 Panic(EFbsBitmapInvalidMode); |
|
1243 } |
|
1244 } |
|
1245 |
|
1246 void CBitwiseBitmap::DoCompressScanLine(TDes8& aBuf,TInt x,TInt y,TInt aClipStrchX,TInt aClipStrchLen,TInt aStretchLength,TInt aOrgX,TInt aOrgLen,const TPoint& aDitherOffset,TDisplayMode aDispMode,TUint32* aBase,TLineScanningPosition& aLineScanningPosition) const |
|
1247 { |
|
1248 TInt first=0,second=0,third=0,fourth=0,fifth=0,sixth=0,seventh=0,eighth=0; |
|
1249 TUint8* bufptr=&aBuf[0]; |
|
1250 TUint8* buflimit=bufptr; |
|
1251 TUint32* slptr=NULL; |
|
1252 TPoint pixel(aOrgX,y); |
|
1253 TDisplayMode displayMode = iSettings.CurrentDisplayMode(); |
|
1254 GetScanLinePtr(slptr,aOrgLen,pixel,aBase, aLineScanningPosition); |
|
1255 if (!slptr) |
|
1256 { |
|
1257 WhiteFill((TUint8*)aBuf.Ptr(),aBuf.MaxLength(),displayMode); |
|
1258 return; |
|
1259 } |
|
1260 TLinearDDA stretchmap; |
|
1261 TPoint coordmap(aOrgX,0); |
|
1262 stretchmap.Construct(coordmap,coordmap+TPoint(aOrgLen,aStretchLength),TLinearDDA::ELeft); |
|
1263 coordmap.iY=aClipStrchX; |
|
1264 if (aClipStrchX>0) stretchmap.JumpToYCoord(coordmap.iX,coordmap.iY); |
|
1265 else stretchmap.NextStep(coordmap); |
|
1266 switch(aDispMode) |
|
1267 { |
|
1268 case EGray4: |
|
1269 { |
|
1270 aClipStrchLen=Min(aClipStrchLen,(TInt)((aBuf.MaxLength())<<2)); |
|
1271 aBuf.SetLength((aClipStrchLen+3)>>2); |
|
1272 TInt index=((aDitherOffset.iY&1)<<1)+((aDitherOffset.iX+x)&1); |
|
1273 buflimit+=aBuf.Length(); |
|
1274 if (displayMode==EGray16) |
|
1275 { |
|
1276 while(bufptr<buflimit) |
|
1277 { |
|
1278 first=HashTo2bpp(GetGrayPixelEx(coordmap.iX,slptr),index); |
|
1279 index^=1; |
|
1280 stretchmap.NextStep(coordmap); |
|
1281 second=HashTo2bpp(GetGrayPixelEx(coordmap.iX,slptr),index); |
|
1282 index^=1; |
|
1283 stretchmap.NextStep(coordmap); |
|
1284 third=HashTo2bpp(GetGrayPixelEx(coordmap.iX,slptr),index); |
|
1285 index^=1; |
|
1286 stretchmap.NextStep(coordmap); |
|
1287 fourth=HashTo2bpp(GetGrayPixelEx(coordmap.iX,slptr),index); |
|
1288 index^=1; |
|
1289 *bufptr++=TUint8(first|(second<<2)|(third<<4)|(fourth<<6)); |
|
1290 stretchmap.NextStep(coordmap); |
|
1291 } |
|
1292 } |
|
1293 else |
|
1294 { |
|
1295 while(bufptr<buflimit) |
|
1296 { |
|
1297 first=GetGrayPixelEx(coordmap.iX,slptr)>>6; |
|
1298 stretchmap.NextStep(coordmap); |
|
1299 second=GetGrayPixelEx(coordmap.iX,slptr)>>6; |
|
1300 stretchmap.NextStep(coordmap); |
|
1301 third=GetGrayPixelEx(coordmap.iX,slptr)>>6; |
|
1302 stretchmap.NextStep(coordmap); |
|
1303 fourth=GetGrayPixelEx(coordmap.iX,slptr)>>6; |
|
1304 *bufptr++=TUint8(first|(second<<2)|(third<<4)|(fourth<<6)); |
|
1305 stretchmap.NextStep(coordmap); |
|
1306 } |
|
1307 } |
|
1308 break; |
|
1309 } |
|
1310 case EGray16: |
|
1311 { |
|
1312 aClipStrchLen=Min(aClipStrchLen,(TInt)((aBuf.MaxLength())<<1)); |
|
1313 aBuf.SetLength((aClipStrchLen+1)>>1); |
|
1314 buflimit+=aBuf.Length(); |
|
1315 while(bufptr<buflimit) |
|
1316 { |
|
1317 first = GetGrayPixelEx(coordmap.iX,slptr) >> 4; |
|
1318 stretchmap.NextStep(coordmap); |
|
1319 first |= GetGrayPixelEx(coordmap.iX,slptr) & 0xf0; |
|
1320 *bufptr++ = TUint8(first); |
|
1321 stretchmap.NextStep(coordmap); |
|
1322 } |
|
1323 break; |
|
1324 } |
|
1325 case EColor16: |
|
1326 { |
|
1327 aClipStrchLen=Min(aClipStrchLen,(TInt)((aBuf.MaxLength())<<1)); |
|
1328 aBuf.SetLength((aClipStrchLen+1)>>1); |
|
1329 buflimit+=aBuf.Length(); |
|
1330 while(bufptr<buflimit) |
|
1331 { |
|
1332 first = GetRgbPixelEx(coordmap.iX,slptr).Color16(); |
|
1333 stretchmap.NextStep(coordmap); |
|
1334 first |= GetRgbPixelEx(coordmap.iX,slptr).Color16() << 4; |
|
1335 *bufptr++ = TUint8(first); |
|
1336 stretchmap.NextStep(coordmap); |
|
1337 } |
|
1338 break; |
|
1339 } |
|
1340 case EGray256: |
|
1341 { |
|
1342 aClipStrchLen = Min(aClipStrchLen,aBuf.MaxLength()); |
|
1343 aBuf.SetLength(aClipStrchLen); |
|
1344 buflimit += aBuf.Length(); |
|
1345 |
|
1346 while(bufptr < buflimit) |
|
1347 { |
|
1348 *bufptr++ = GetGrayPixelEx(coordmap.iX,slptr); |
|
1349 stretchmap.NextStep(coordmap); |
|
1350 } |
|
1351 break; |
|
1352 } |
|
1353 case EColor256: |
|
1354 { |
|
1355 aClipStrchLen = Min(aClipStrchLen,aBuf.MaxLength()); |
|
1356 aBuf.SetLength(aClipStrchLen); |
|
1357 buflimit += aBuf.Length(); |
|
1358 |
|
1359 while(bufptr < buflimit) |
|
1360 { |
|
1361 *bufptr++ = TUint8(GetRgbPixelEx(coordmap.iX,slptr).Color256()); |
|
1362 stretchmap.NextStep(coordmap); |
|
1363 } |
|
1364 break; |
|
1365 } |
|
1366 case EColor4K: |
|
1367 { |
|
1368 aClipStrchLen = Min(aClipStrchLen,aBuf.MaxLength() >> 1); |
|
1369 aBuf.SetLength(aClipStrchLen << 1); |
|
1370 buflimit += aBuf.Length(); |
|
1371 |
|
1372 while(bufptr < buflimit) |
|
1373 { |
|
1374 *((TUint16*)bufptr) = TUint16(GetRgbPixelEx(coordmap.iX,slptr)._Color4K()); |
|
1375 bufptr += 2; |
|
1376 stretchmap.NextStep(coordmap); |
|
1377 } |
|
1378 break; |
|
1379 } |
|
1380 case EColor64K: |
|
1381 { |
|
1382 aClipStrchLen = Min(aClipStrchLen,aBuf.MaxLength() >> 1); |
|
1383 aBuf.SetLength(aClipStrchLen << 1); |
|
1384 buflimit += aBuf.Length(); |
|
1385 |
|
1386 while(bufptr < buflimit) |
|
1387 { |
|
1388 *((TUint16*)bufptr) = TUint16(GetRgbPixelEx(coordmap.iX,slptr)._Color64K()); |
|
1389 bufptr += 2; |
|
1390 stretchmap.NextStep(coordmap); |
|
1391 } |
|
1392 break; |
|
1393 } |
|
1394 case EColor16M: |
|
1395 { |
|
1396 aClipStrchLen = Min(aClipStrchLen,aBuf.MaxLength() / 3); |
|
1397 aBuf.SetLength(aClipStrchLen * 3); |
|
1398 buflimit += aBuf.Length(); |
|
1399 |
|
1400 while(bufptr<buflimit) |
|
1401 { |
|
1402 TInt color16M = GetRgbPixelEx(coordmap.iX,slptr)._Color16M(); |
|
1403 *bufptr++ = TUint8(color16M); |
|
1404 *bufptr++ = TUint8(color16M >> 8); |
|
1405 *bufptr++ = TUint8(color16M >> 16); |
|
1406 stretchmap.NextStep(coordmap); |
|
1407 } |
|
1408 break; |
|
1409 } |
|
1410 case ERgb: |
|
1411 case EColor16MU: |
|
1412 case EColor16MA: |
|
1413 case EColor16MAP: |
|
1414 { |
|
1415 aClipStrchLen = Min(aClipStrchLen,aBuf.MaxLength() >> 2); |
|
1416 aBuf.SetLength(aClipStrchLen << 2); |
|
1417 TUint32* pixelPtr = (TUint32*)bufptr; |
|
1418 TUint32* pixelPtrLimit = pixelPtr + aClipStrchLen; |
|
1419 if (aDispMode == EColor16MAP && displayMode == EColor16MA) |
|
1420 while(pixelPtr < pixelPtrLimit) |
|
1421 { |
|
1422 *pixelPtr++ = NonPMA2PMAPixel(*(slptr + coordmap.iX)); |
|
1423 stretchmap.NextStep(coordmap); |
|
1424 } |
|
1425 else if (aDispMode == EColor16MAP && displayMode == EColor16MAP) |
|
1426 while(pixelPtr < pixelPtrLimit) |
|
1427 { |
|
1428 *pixelPtr++ = *(slptr + coordmap.iX); |
|
1429 stretchmap.NextStep(coordmap); |
|
1430 } |
|
1431 else if (aDispMode == EColor16MU) |
|
1432 while(pixelPtr < pixelPtrLimit) |
|
1433 { |
|
1434 *pixelPtr++ = GetRgbPixelEx(coordmap.iX, slptr).Internal(); |
|
1435 stretchmap.NextStep(coordmap); |
|
1436 } |
|
1437 else |
|
1438 while(pixelPtr < pixelPtrLimit) |
|
1439 { |
|
1440 *pixelPtr++ = GetRgbPixelEx(coordmap.iX, slptr).Internal(); |
|
1441 stretchmap.NextStep(coordmap); |
|
1442 } |
|
1443 break; |
|
1444 } |
|
1445 case EGray2: |
|
1446 { |
|
1447 TBool oddx=(aDitherOffset.iX&1); |
|
1448 TBool oddy=(aDitherOffset.iY&1); |
|
1449 aClipStrchLen=Min(aClipStrchLen,(TInt)((aBuf.MaxLength())<<3)); |
|
1450 aBuf.SetLength((aClipStrchLen+7)>>3); |
|
1451 buflimit+=aBuf.Length(); |
|
1452 while(bufptr<buflimit) |
|
1453 { |
|
1454 first=HashTo1bpp(GetGrayPixelEx(coordmap.iX,slptr),oddx,oddy); |
|
1455 stretchmap.NextStep(coordmap); |
|
1456 second=HashTo1bpp(GetGrayPixelEx(coordmap.iX,slptr),oddx,oddy); |
|
1457 stretchmap.NextStep(coordmap); |
|
1458 third=HashTo1bpp(GetGrayPixelEx(coordmap.iX,slptr),oddx,oddy); |
|
1459 stretchmap.NextStep(coordmap); |
|
1460 fourth=HashTo1bpp(GetGrayPixelEx(coordmap.iX,slptr),oddx,oddy); |
|
1461 stretchmap.NextStep(coordmap); |
|
1462 fifth=HashTo1bpp(GetGrayPixelEx(coordmap.iX,slptr),oddx,oddy); |
|
1463 stretchmap.NextStep(coordmap); |
|
1464 sixth=HashTo1bpp(GetGrayPixelEx(coordmap.iX,slptr),oddx,oddy); |
|
1465 stretchmap.NextStep(coordmap); |
|
1466 seventh=HashTo1bpp(GetGrayPixelEx(coordmap.iX,slptr),oddx,oddy); |
|
1467 stretchmap.NextStep(coordmap); |
|
1468 eighth=HashTo1bpp(GetGrayPixelEx(coordmap.iX,slptr),oddx,oddy); |
|
1469 *bufptr++=TUint8(first|(second<<1)|(third<<2)|(fourth<<3)| |
|
1470 (fifth<<4)|(sixth<<5)|(seventh<<6)|(eighth<<7)); |
|
1471 stretchmap.NextStep(coordmap); |
|
1472 oddx^=1; |
|
1473 } |
|
1474 break; |
|
1475 } |
|
1476 default: |
|
1477 Panic(EFbsBitmapInvalidMode); |
|
1478 } |
|
1479 } |