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1 // Copyright (c) 2009-2010 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 "glyphatlas.h" |
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17 #include "OstTraceDefinitions.h" |
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18 #ifdef OST_TRACE_COMPILER_IN_USE |
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19 #include "glyphatlasTraces.h" |
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20 #endif |
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21 |
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22 |
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23 extern void Panic(TFbsPanic aPanic); |
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24 |
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25 static TInt16 Load16(const TUint8* aPtr); |
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26 static void DecodeBinaryData(const TSize& aGlyphSize, const TUint8* aEncodedData, TUint8* aByteData); |
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27 static void DecodeBinaryDataExLarge(const TSize& aGlyphSize, const TUint8* aEncodedData, TUint8* aByteData); |
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28 static void Convert1BppTo8Bpp(TUint32 aSrcData, TUint8*& aDestDataPtr, const TUint8* aDestDataPtrLimit); |
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29 static void CopyCharLine(TUint8*& aByteDataPtr, TInt aWidthInBytes, const TUint8* aSrcData, TInt aBitShift, TInt16 aRepeatCount); |
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30 |
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31 // === CGlyphAtlas Functions === |
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32 |
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33 /** |
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34 Glyph Atlas constructor. |
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35 @param aMaxCacheSizeInBytes The maximum amount of specialised graphics memory |
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36 that the glyph atlas should use. If this value is KGlyphAtlasNoCacheLimit, |
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37 then there is no limit and the atlas will use as much memory as is available |
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38 in the system. |
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39 */ |
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40 CGlyphAtlas::CGlyphAtlas(TInt aMaxCacheSizeInBytes) |
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41 :iLruPageList(_FOFF(CGlyphAtlasPage, iLink)), |
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42 iFontEntryArray(32, _FOFF(TFontEntryMap, iFont)), |
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43 iMaxCacheSizeInBytes(aMaxCacheSizeInBytes), |
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44 iMaxCacheSizeHigh(aMaxCacheSizeInBytes), |
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45 iGpuCacheSizeLimitIsMax(ETrue) |
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46 { |
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47 iMaxCacheSizeLow = ( KGlyphAtlasNoCacheLimit == aMaxCacheSizeInBytes ) |
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48 ? KGlyphAtlasLowMemCacheLimitDefault |
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49 : ( aMaxCacheSizeInBytes / KGlyphAtlasLowMemCacheLimitDivisor ); |
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50 } |
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51 |
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52 /** |
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53 Glyph Atlas destructor. |
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54 Frees all the RSgImage handles, frees all the allocated system memory, and |
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55 closes the Graphics Resource driver. |
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56 */ |
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57 CGlyphAtlas::~CGlyphAtlas() |
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58 { |
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59 // cycle through all the font entries and destroy them |
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60 for (TInt ii = iFontEntryArray.Count()-1; ii >= 0; --ii) |
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61 { |
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62 DeleteFontEntry(iFontEntryArray[ii].iEntry); |
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63 } |
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64 iFontEntryArray.Close(); |
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65 __ASSERT_DEBUG(iLruPageList.IsEmpty(), Panic(EFbsPanicGlyphAtlasInconsistentState)); |
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66 |
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67 // there shouldn't be any remaining pages, but if there are, destroy them. |
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68 while (!iLruPageList.IsEmpty()) |
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69 { |
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70 delete iLruPageList.First(); |
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71 } |
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72 iSgDriver.Close(); |
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73 } |
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74 |
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75 /** |
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76 Factory constructor method. Creates a new glyph atlas. |
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77 |
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78 @param aMaxCacheSizeInBytes The size in bytes, to use as the upper limit |
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79 for the size of memory used by the glyph images in the atlas. If this |
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80 value is KGlyphAtlasNoCacheLimit, then there is no limit and the atlas |
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81 will use as much memory as is available in the system. |
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82 |
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83 @return A pointer to the newly-constructed atlas |
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84 |
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85 @leave KErrNoMemory if there was insufficient memory to create the atlas, |
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86 or a system wide error code if its RSgDriver failed to open. |
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87 */ |
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88 CGlyphAtlas* CGlyphAtlas::NewL(TInt aMaxCacheSizeInBytes) |
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89 { |
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90 CGlyphAtlas* self = new (ELeave) CGlyphAtlas(aMaxCacheSizeInBytes); |
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91 CleanupStack::PushL(self); |
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92 self->ConstructL(); |
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93 CleanupStack::Pop(); // self; |
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94 return self; |
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95 } |
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96 |
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97 /** |
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98 Two-phase constructor. |
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99 @leave A system wide error code if RSgDriver failed to open. |
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100 */ |
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101 void CGlyphAtlas::ConstructL() |
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102 { |
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103 User::LeaveIfError(iSgDriver.Open()); |
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104 } |
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105 |
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106 /** |
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107 Retrieves a glyph from the atlas. |
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108 If the glyph is found, the glyph data passed in is populated. |
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109 |
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110 @param[in] aFont The font the glyph belongs to. |
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111 @param[in] aGlyphCode The glyph code for the glyph being requested. |
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112 @param[out] aGlyphImageInfo The glyph image information if this function is successful. |
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113 @return KErrNone if the glyph is found, KErrNotFound if not. |
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114 */ |
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115 TInt CGlyphAtlas::GetGlyph(const CBitmapFont& aFont, TUint aGlyphCode, TGlyphImageInfo& aGlyphImageInfo) |
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116 { |
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117 OstTraceExt2( TRACE_NORMAL, CGLYPHATLAS_GETGLYPH, "> f=%x; gc=%04x",(TUint)&aFont, aGlyphCode); |
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118 |
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119 CGlyphAtlasFontEntry* fontEntry = FindFontEntry(aFont); |
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120 if (!fontEntry) |
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121 { |
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122 OstTrace0( TRACE_NORMAL, CGLYPHATLAS_GETGLYPH_END2, "< KErrNotFound"); |
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123 return KErrNotFound; |
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124 } |
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125 TInt err = fontEntry->GetGlyph(aGlyphCode, aGlyphImageInfo); |
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126 |
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127 OstTraceExt5( TRACE_NORMAL, CGLYPHATLAS_GETGLYPH_END1, "< id=%08x%08x; w=%u; h=%u; err=%d", |
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128 (TUint)I64HIGH(aGlyphImageInfo.iImageId.iId), (TUint)I64LOW(aGlyphImageInfo.iImageId.iId), |
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129 (TUint)aGlyphImageInfo.iMetrics.Width(), (TUint)aGlyphImageInfo.iMetrics.Height(), (TInt)err); |
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130 |
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131 return err; |
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132 } |
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133 |
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134 /** |
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135 Adds a glyph to the atlas from a bitmap glyph and retrieves the glyph data. |
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136 If there is insufficient memory to create a RSgImage, then the least recently |
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137 used pages (and all the glyphs contained within) are removed until there is |
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138 enough memory to continue. |
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139 |
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140 @param[in] aFont The font the glyph belongs to. |
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141 @param[in] aArgs The information needed to create a glyph. |
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142 @param[out] aGlyphImageInfo Upon return contains all the glyph image information needed to use the |
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143 glyph in another process. |
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144 @return KErrNone if the glyph was successfully added or other system-wide error. |
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145 */ |
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146 TInt CGlyphAtlas::AddGlyph(const CBitmapFont& aFont, const TAddGlyphArgs& aArgs, TGlyphImageInfo& aGlyphImageInfo) |
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147 { |
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148 OstTraceDefExt5( OST_TRACE_CATEGORY_DEBUG, TRACE_NORMAL, CGLYPHATLAS_ADDGLYPH, "> f=%x; bp=%08x; gc=%04x; w=%u; h=%u", |
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149 (TUint)&aFont, (TUint)aArgs.iBitmapPointer, aArgs.iGlyphCode, |
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150 aArgs.iMetrics->Width(), aArgs.iMetrics->Height()); |
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151 |
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152 // Find font entry and create if none found |
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153 CGlyphAtlasFontEntry* fontEntry = FindFontEntry(aFont); |
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154 TBool isNewFont = EFalse; |
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155 if (!fontEntry) |
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156 { |
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157 // Create a new font. |
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158 fontEntry = CreateFontEntry(aFont); |
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159 if (!fontEntry) |
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160 { |
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161 OstTraceDef0(OST_TRACE_CATEGORY_DEBUG, TRACE_NORMAL, CGLYPHATLAS_ADDGLYPH_END2, "< KErrNoMemory"); |
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162 return KErrNoMemory; |
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163 } |
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164 isNewFont = ETrue; |
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165 } |
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166 TInt glyphSizeInBytes = 0; |
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167 TInt err = fontEntry->AddGlyph(aArgs, aGlyphImageInfo, glyphSizeInBytes); |
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168 if (KErrNone != err) |
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169 { |
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170 if (isNewFont) |
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171 { |
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172 DeleteFontEntry(fontEntry); |
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173 } |
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174 OstTraceDef1(OST_TRACE_CATEGORY_DEBUG, TRACE_NORMAL, CGLYPHATLAS_ADDGLYPH_END3, "< err=%d", err); |
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175 return err; |
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176 } |
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177 iCacheSizeInBytes += glyphSizeInBytes; |
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178 |
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179 // If there is a cache limit and it is now exceeded, remove the least |
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180 // recently used pages until the cache size is within the upper limit. Do |
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181 // not remove the page relating to the glyph which is being added, which is |
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182 // now at the head of the LRU array. |
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183 if (iMaxCacheSizeInBytes != KGlyphAtlasNoCacheLimit) |
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184 { |
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185 TBool morePagesToDelete = ETrue; |
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186 while ((iCacheSizeInBytes > iMaxCacheSizeInBytes) && morePagesToDelete) |
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187 { |
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188 morePagesToDelete = DeleteLeastRecentlyUsedPage(EFalse); |
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189 } |
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190 } |
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191 |
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192 OstTraceDefExt2(OST_TRACE_CATEGORY_DEBUG, TRACE_NORMAL, CGLYPHATLAS_ADDGLYPH_END1, "< id=%08x%08x", |
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193 I64HIGH(aGlyphImageInfo.iImageId.iId), I64LOW(aGlyphImageInfo.iImageId.iId)); |
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194 |
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195 return KErrNone; |
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196 } |
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197 |
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198 /** |
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199 Releases all glyphs associated with a particular font when it has been |
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200 released by the font system. |
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201 |
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202 @param aFont The font which is released. |
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203 */ |
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204 void CGlyphAtlas::FontReleased(const CBitmapFont& aFont) |
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205 { |
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206 OstTraceDef1(OST_TRACE_CATEGORY_DEBUG, TRACE_NORMAL, CGLYPHATLAS_FONTRELEASED, "> f=%x", (TUint)&aFont); |
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207 |
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208 TInt index = iFontEntryArray.FindInUnsignedKeyOrder(TFontEntryMap(&aFont, NULL)); |
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209 if (KErrNotFound == index) |
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210 { |
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211 OstTraceDef0(OST_TRACE_CATEGORY_DEBUG, TRACE_NORMAL, CGLYPHATLAS_FONTRELEASED_END2, "< KErrNotFound"); |
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212 return; |
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213 } |
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214 CGlyphAtlasFontEntry* fontEntry = iFontEntryArray[index].iEntry; |
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215 iCacheSizeInBytes -= fontEntry->SizeInBytes(); |
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216 delete fontEntry; |
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217 iFontEntryArray.Remove(index); |
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218 OstTraceDef0(OST_TRACE_CATEGORY_DEBUG, TRACE_NORMAL, CGLYPHATLAS_FONTRELEASED_END3, "< KErrNone"); |
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219 } |
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220 |
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221 /** |
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222 Searches the array of font entries to find the entry for the given font. |
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223 If the font entry is found, the entry is returned. If not a NULL pointer is |
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224 returned. |
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225 |
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226 @param aFont The font to match an entry with. |
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227 @return The font entry if a match is found, NULL if not. |
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228 */ |
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229 CGlyphAtlasFontEntry* CGlyphAtlas::FindFontEntry(const CBitmapFont& aFont) const |
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230 { |
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231 TFontEntryMap entryToMatch(&aFont, NULL); |
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232 TInt index = iFontEntryArray.FindInUnsignedKeyOrder(entryToMatch); |
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233 if (KErrNotFound == index) |
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234 { |
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235 return NULL; |
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236 } |
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237 return iFontEntryArray[index].iEntry; |
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238 } |
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239 |
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240 /** |
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241 Deletes the given font entry. |
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242 The mapping from the font to the font entry is removed. |
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243 |
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244 @param aFontEntry The entry to delete. |
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245 */ |
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246 void CGlyphAtlas::DeleteFontEntry(CGlyphAtlasFontEntry* aFontEntry) |
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247 { |
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248 __ASSERT_DEBUG(aFontEntry, Panic(EFbsPanicGlyphAtlasInconsistentState)); |
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249 TInt index = iFontEntryArray.FindInUnsignedKeyOrder(TFontEntryMap(&aFontEntry->Font(), NULL)); |
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250 __ASSERT_DEBUG(KErrNotFound != index, Panic(EFbsPanicGlyphAtlasInconsistentState)); |
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251 if (KErrNotFound != index) |
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252 { |
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253 iFontEntryArray.Remove(index); |
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254 } |
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255 iCacheSizeInBytes -= aFontEntry->SizeInBytes(); |
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256 delete aFontEntry; |
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257 } |
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258 |
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259 /** |
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260 Moves the given page to the front (the position of the most recently used page) |
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261 of the usage order list. |
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262 |
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263 @param aPage The most recently used page. |
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264 */ |
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265 void CGlyphAtlas::MovePageToFront(CGlyphAtlasPage& aPage) |
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266 { |
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267 aPage.MoveToFirstInQueue(iLruPageList); |
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268 } |
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269 |
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270 /** |
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271 Creates a font entry from the given font and adds a mapping from the font |
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272 to the font entry. |
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273 If successful, the font entry is returned. |
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274 If either the creation of the font entry or the adding the mapping fails, then |
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275 a NULL pointer is returned. |
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276 |
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277 @param aFont The font used to create a font entry from. |
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278 @return A new font entry if successful, NULL if not. |
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279 */ |
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280 CGlyphAtlasFontEntry* CGlyphAtlas::CreateFontEntry(const CBitmapFont& aFont) |
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281 { |
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282 CGlyphAtlasFontEntry* fontEntry = new CGlyphAtlasFontEntry(aFont, *this); |
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283 if (!fontEntry) |
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284 { |
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285 return NULL; |
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286 } |
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287 // Add font entry to font entry array |
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288 TFontEntryMap fontEntryMap(&aFont, fontEntry); |
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289 TInt err = iFontEntryArray.InsertInUnsignedKeyOrder(fontEntryMap); |
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290 __ASSERT_DEBUG(KErrAlreadyExists != err, Panic(EFbsPanicGlyphAtlasInconsistentState)); |
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291 if (KErrNone != err) |
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292 { |
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293 delete fontEntry; |
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294 fontEntry = NULL; |
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295 } |
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296 return fontEntry; |
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297 } |
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298 |
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299 /** |
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300 Deletes the least recently used page and removes it from the list of pages |
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301 held by the atlas. |
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302 |
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303 @param aAllowMruPageDeletion ETrue if the most recently used page can be deleted, |
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304 EFalse otherwise. |
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305 @return ETrue, if there are pages remaining in the atlas after the deletion, EFalse |
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306 otherwise. If there is only one page in the atlas and aAllowMruPageDeletion is EFalse, |
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307 EFalse is returned. |
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308 */ |
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309 TBool CGlyphAtlas::DeleteLeastRecentlyUsedPage(TBool aAllowMruPageDeletion) |
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310 { |
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311 OstTraceDef1(OST_TRACE_CATEGORY_DEBUG, TRACE_NORMAL, CGLYPHATLAS_DELETELEASTRECENTLYUSEDPAGE, "> mru=%d", aAllowMruPageDeletion ); |
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312 |
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313 CGlyphAtlasPage* lruPage = NULL; |
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314 if (!iLruPageList.IsEmpty()) |
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315 { |
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316 lruPage = iLruPageList.Last(); |
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317 if (!aAllowMruPageDeletion && (lruPage == iLruPageList.First())) |
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318 { |
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319 lruPage = NULL; |
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320 } |
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321 } |
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322 TBool canDeleteMorePages = EFalse; |
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323 if (lruPage) |
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324 { |
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325 iCacheSizeInBytes -= lruPage->SizeInBytes(); |
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326 CGlyphAtlasFontEntry& fontEntry = lruPage->FontEntry(); |
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327 fontEntry.DeletePage(lruPage); |
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328 lruPage = NULL; |
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329 if (fontEntry.IsEmpty()) |
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330 { |
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331 DeleteFontEntry(&fontEntry); |
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332 } |
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333 canDeleteMorePages = !iLruPageList.IsEmpty(); |
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334 } |
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335 OstTraceDefExt2(OST_TRACE_CATEGORY_DEBUG, TRACE_NORMAL, CGLYPHATLAS_DELETELEASTRECENTLYUSEDPAGE_END, "< more=%u; size=%u", (TUint)canDeleteMorePages, iCacheSizeInBytes); |
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336 return canDeleteMorePages; |
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337 } |
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338 |
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339 /** |
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340 Utility function that calculates the number of unique fonts associated with the atlas. |
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341 @return Number of fonts in the atlas. |
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342 */ |
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343 TInt CGlyphAtlas::FontCount() const |
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344 { |
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345 return iFontEntryArray.Count(); |
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346 } |
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347 |
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348 /** |
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349 Utility function that calculates the number of glyphs across all fonts stored in |
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350 the atlas. |
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351 @return Number of glyphs in the atlas. |
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352 */ |
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353 TInt CGlyphAtlas::GlyphCount() const |
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354 { |
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355 TInt glyphCount = 0; |
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356 for (TInt ii = iFontEntryArray.Count() - 1; ii >= 0; --ii) |
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357 { |
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358 glyphCount += iFontEntryArray[ii].iEntry->GlyphCount(); |
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359 } |
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360 return glyphCount; |
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361 } |
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362 |
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363 /** |
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364 Utility function that calculates the number of glyphs for a given font in the atlas. |
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365 @param The font to return the number of glyphs for. |
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366 @return Number of glyphs in the atlas. |
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367 */ |
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368 TInt CGlyphAtlas::GlyphCount(const CBitmapFont& aFont) const |
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369 { |
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370 CGlyphAtlasFontEntry* fontEntry = FindFontEntry(aFont); |
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371 return (fontEntry) ? fontEntry->GlyphCount() : 0; |
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372 } |
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373 |
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374 void CGlyphAtlas::GetGlyphCacheMetrics( TGlyphCacheMetrics& aGlyphCacheMetrics ) |
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375 { |
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376 aGlyphCacheMetrics.iMaxCacheSizeInBytes = iMaxCacheSizeInBytes; |
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377 aGlyphCacheMetrics.iMaxCacheSizeHigh = iMaxCacheSizeHigh; |
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378 aGlyphCacheMetrics.iMaxCacheSizeLow = iMaxCacheSizeLow; |
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379 aGlyphCacheMetrics.iCacheSizeInBytes = iCacheSizeInBytes; |
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380 aGlyphCacheMetrics.iGpuCacheSizeLimitIsMax = iGpuCacheSizeLimitIsMax; |
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381 } |
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382 |
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383 /** |
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384 Function to release the GPU cache. Called in response to the GoomMonitor's |
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385 requirement to reduce GPU memory use. |
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386 |
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387 @param aBytes. The amount of memory the GOoM framework would like us to relinquish. |
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388 @param aFlags. The flags conveyed from the GOoM monitor framework. |
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389 */ |
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390 void CGlyphAtlas::ReleaseGpuMemory( TInt /*aBytes*/, TInt /*aFlags*/ ) |
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391 { |
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392 OstTraceDefExt2( OST_TRACE_CATEGORY_DEBUG, TRACE_NORMAL, CGLYPHATLAS_RELEASEGPUMEMORY, "> max=%d; size=%d", iMaxCacheSizeInBytes, iCacheSizeInBytes); |
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393 |
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394 if ( iCacheSizeInBytes > 0 ) |
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395 { |
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396 while( DeleteLeastRecentlyUsedPage(ETrue) ) |
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397 { |
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398 // Do nothing |
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399 } |
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400 } |
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401 |
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402 // If appropriate, reduce the cache-size limit. |
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403 if ( GpuCacheSizeLimitIsMax() ) |
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404 { |
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405 SwitchGpuCacheSizeLimit(); |
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406 } |
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407 |
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408 OstTraceDefExt2( OST_TRACE_CATEGORY_DEBUG, TRACE_NORMAL, CGLYPHATLAS_RELEASEGPUMEMORY_EXIT, "< max=%d; size=%d", iMaxCacheSizeInBytes, iCacheSizeInBytes); |
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409 } |
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410 |
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411 /** |
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412 Function to establish GPU memory use. Called in response to the GoomMonitor's |
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413 notification that GPU memory may once more be utilised in the usual manner. |
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414 |
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415 @param aFlags. The flags conveyed from the GOoM monitor framework. |
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416 */ |
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417 void CGlyphAtlas::InstateGpuMemory( TInt /*aFlags*/ ) |
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418 { |
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419 OstTraceDef1(OST_TRACE_CATEGORY_DEBUG, TRACE_NORMAL, CGLYPHATLAS_INSTATEGPUMEMORY, "> max=%d", iMaxCacheSizeInBytes ); |
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420 |
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421 // If appropriate, reinstate the full cache-size limit. |
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422 if ( !GpuCacheSizeLimitIsMax() ) |
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423 { |
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424 SwitchGpuCacheSizeLimit(); |
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425 } |
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426 |
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427 OstTraceDef1(OST_TRACE_CATEGORY_DEBUG, TRACE_NORMAL, CGLYPHATLAS_INSTATEGPUMEMORY_EXIT, "< max=%d", iMaxCacheSizeInBytes ); |
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428 } |
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429 |
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430 /** |
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431 Utility function to toggle between full and reduced GPU cache-size limits. |
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432 |
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433 Use in conjunction with TBool GpuCacheSizeLimitIsMax() |
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434 */ |
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435 void CGlyphAtlas::SwitchGpuCacheSizeLimit() |
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436 { |
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437 if ( GpuCacheSizeLimitIsMax() ) |
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438 { |
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439 // The short-circuit operator obviates tautological conditionals. |
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440 while ( (iCacheSizeInBytes >= iMaxCacheSizeLow) && DeleteLeastRecentlyUsedPage(ETrue) ) |
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441 { |
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442 // Do Nothing... |
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443 } |
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444 |
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445 iMaxCacheSizeInBytes = iMaxCacheSizeLow; |
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446 iGpuCacheSizeLimitIsMax = EFalse; |
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447 } |
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448 else |
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449 { |
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450 iMaxCacheSizeInBytes = iMaxCacheSizeHigh; |
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451 iGpuCacheSizeLimitIsMax = ETrue; |
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452 } |
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453 } |
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454 |
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455 |
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456 /** |
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457 Utility function to report whether the GPU cache-size limit is set to the maximum permissible |
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458 level, or to its reduced level. |
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459 |
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460 @return ETrue if the cache-size is set to the maximum permissible limit. |
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461 EFalse if it is set to the reduced limit. |
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462 */ |
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463 TBool CGlyphAtlas::GpuCacheSizeLimitIsMax() const |
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464 { |
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465 return iGpuCacheSizeLimitIsMax; |
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466 } |
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467 |
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468 // === CGlyphAtlasFontEntry Functions === |
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469 /** |
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470 Font entry constructor. |
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471 |
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472 @param aFont The font to which this font entry should be associated. |
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473 @param aGlyphAtlas The glyph atlas to which this font entry belongs. |
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474 */ |
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475 CGlyphAtlasFontEntry::CGlyphAtlasFontEntry(const CBitmapFont& aFont, CGlyphAtlas& aGlyphAtlas) |
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476 :iFont(aFont), |
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477 iPageArray(32, _FOFF(TPageMap, iGlyphCode)), |
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478 iAtlas(aGlyphAtlas) |
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479 { |
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480 } |
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481 |
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482 /** |
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483 Font entry destructor. |
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484 Destroys the pages owned by the font entry. |
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485 */ |
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486 CGlyphAtlasFontEntry::~CGlyphAtlasFontEntry() |
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487 { |
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488 // cycle through all the font entries and destroy them |
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489 for (TInt ii = iPageArray.Count()-1; ii >= 0; --ii) |
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490 { |
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491 DeletePage(iPageArray[ii].iPage); |
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492 } |
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493 __ASSERT_DEBUG(iSizeInBytes == 0, Panic(EFbsPanicGlyphAtlasInconsistentState)); |
|
494 iPageArray.Close(); |
|
495 } |
|
496 |
|
497 /** |
|
498 Deletes the given page. |
|
499 The page mapping is removed and the page is deleted. |
|
500 |
|
501 @param aPage The page to delete. |
|
502 */ |
|
503 void CGlyphAtlasFontEntry::DeletePage(CGlyphAtlasPage* aPage) |
|
504 { |
|
505 __ASSERT_DEBUG(aPage, Panic(EFbsPanicGlyphAtlasInconsistentState)); |
|
506 __ASSERT_DEBUG(iPageArray.Count() > 0, Panic(EFbsPanicGlyphAtlasInconsistentState)); |
|
507 |
|
508 TInt numGlyphsInPage = aPage->GlyphCount(); |
|
509 |
|
510 for (TInt ii = 0; ii < numGlyphsInPage; ++ii) |
|
511 { |
|
512 TInt index = iPageArray.FindInUnsignedKeyOrder(TPageMap(aPage->GlyphCodeAt(ii), NULL)); |
|
513 |
|
514 __ASSERT_DEBUG(KErrNotFound != index, Panic(EFbsPanicGlyphAtlasInconsistentState)); |
|
515 |
|
516 if (KErrNotFound != index) |
|
517 { |
|
518 iPageArray.Remove(index); |
|
519 iPageArray.GranularCompress(); |
|
520 } |
|
521 } |
|
522 iSizeInBytes -= aPage->SizeInBytes(); |
|
523 delete aPage; |
|
524 |
|
525 } |
|
526 |
|
527 /** |
|
528 Adds a glyph to the font from a bitmap glyph and gets the glyph image info back. |
|
529 |
|
530 @param[in] aArgs The information needed to create a glyph. |
|
531 @param[out] aGlyphImageInfo Upon return contains all the glyph image information needed to use the |
|
532 glyph in another process. |
|
533 @param[out] aSizeInBytes Upon return contains the size of the added glyph's image data in bytes. |
|
534 @return KErrNone if the glyph was successfully added or other system-wide error. |
|
535 */ |
|
536 TInt CGlyphAtlasFontEntry::AddGlyph(const CGlyphAtlas::TAddGlyphArgs& aArgs, TGlyphImageInfo& aGlyphImageInfo, TInt& aSizeInBytes) |
|
537 { |
|
538 CGlyphAtlasPage* newPage = new CGlyphAtlasPage(*this); |
|
539 if (!newPage) |
|
540 { |
|
541 return KErrNoMemory; |
|
542 } |
|
543 |
|
544 TInt err = newPage->AddGlyph(aArgs, aGlyphImageInfo, aSizeInBytes); |
|
545 if (KErrNone != err) |
|
546 { |
|
547 delete newPage; |
|
548 return err; |
|
549 } |
|
550 |
|
551 err = iPageArray.InsertInUnsignedKeyOrder(TPageMap(aArgs.iGlyphCode, newPage)); |
|
552 __ASSERT_DEBUG(KErrAlreadyExists != err, Panic(EFbsPanicGlyphAtlasInconsistentState)); |
|
553 if (KErrNone != err) |
|
554 { |
|
555 delete newPage; |
|
556 return err; |
|
557 } |
|
558 iSizeInBytes += aSizeInBytes; |
|
559 iAtlas.MovePageToFront(*newPage); |
|
560 return err; |
|
561 } |
|
562 |
|
563 /** |
|
564 Searches the array of pages to find the page containing the given glyph. |
|
565 If the page is found, the glyph image info is populated and the page is moved |
|
566 to the front of the Glyph Atlas' LRU page array. |
|
567 |
|
568 @param[in] aGlyphCode The glyph code for the glyph being requested. |
|
569 @param[out] aGlyphImageInfo Upon return contains all the glyph image information needed to use the |
|
570 glyph in another process. |
|
571 @return KErrNone if the glyph was found, KErrNotFound if not. |
|
572 */ |
|
573 TInt CGlyphAtlasFontEntry::GetGlyph(TUint aGlyphCode, TGlyphImageInfo& aGlyphImageInfo) |
|
574 { |
|
575 TInt index = iPageArray.FindInUnsignedKeyOrder(TPageMap(aGlyphCode, NULL)); |
|
576 if (KErrNotFound == index) |
|
577 { |
|
578 return KErrNotFound; |
|
579 } |
|
580 CGlyphAtlasPage* page = iPageArray[index].iPage; |
|
581 page->GetGlyph(aGlyphCode, aGlyphImageInfo); |
|
582 iAtlas.MovePageToFront(*page); |
|
583 return KErrNone; |
|
584 } |
|
585 |
|
586 /** |
|
587 Gets the font associated with the font entry. |
|
588 |
|
589 @return The font associated with this entry. |
|
590 */ |
|
591 const CBitmapFont& CGlyphAtlasFontEntry::Font() const |
|
592 { |
|
593 return iFont; |
|
594 } |
|
595 |
|
596 /** |
|
597 Gets the amount of memory allocated for all the image data for this font. |
|
598 |
|
599 @return The size of the font's image data in bytes. |
|
600 */ |
|
601 TInt CGlyphAtlasFontEntry::SizeInBytes() const |
|
602 { |
|
603 return iSizeInBytes; |
|
604 } |
|
605 |
|
606 /** |
|
607 Tests whether the font entry has any pages. |
|
608 |
|
609 @return ETrue if the font entry does not contain any pages, EFalse if it does.. |
|
610 */ |
|
611 TBool CGlyphAtlasFontEntry::IsEmpty() const |
|
612 { |
|
613 if (iPageArray.Count() == 0) |
|
614 { |
|
615 __ASSERT_DEBUG(iSizeInBytes == 0, Panic(EFbsPanicGlyphAtlasInconsistentState)); |
|
616 return ETrue; |
|
617 } |
|
618 return EFalse; |
|
619 } |
|
620 |
|
621 /** |
|
622 Gets the glyph atlas the font entry belongs to. |
|
623 |
|
624 @return The font entry's glyph atlas. |
|
625 */ |
|
626 CGlyphAtlas& CGlyphAtlasFontEntry::GlyphAtlas() const |
|
627 { |
|
628 return iAtlas; |
|
629 } |
|
630 |
|
631 /** |
|
632 @return The number of glyphs this font entry has. |
|
633 */ |
|
634 TInt CGlyphAtlasFontEntry::GlyphCount() const |
|
635 { |
|
636 TInt glyphCount = 0; |
|
637 for (TInt ii = iPageArray.Count() - 1; ii >= 0; --ii) |
|
638 { |
|
639 glyphCount += iPageArray[ii].iPage->GlyphCount(); |
|
640 } |
|
641 return glyphCount; |
|
642 } |
|
643 |
|
644 |
|
645 // === CGlyphAtlasPage Functions === |
|
646 |
|
647 /** |
|
648 Page constructor. |
|
649 |
|
650 @param aFontEntry The font entry to which the page is associated. |
|
651 */ |
|
652 CGlyphAtlasPage::CGlyphAtlasPage(CGlyphAtlasFontEntry& aFontEntry) |
|
653 :iFontEntry(aFontEntry) |
|
654 { |
|
655 } |
|
656 |
|
657 /** |
|
658 Page destructor. |
|
659 Releases the RSgImage handles held by the page. |
|
660 Removes the page from the Glyph Atlas' LRU page array. |
|
661 */ |
|
662 CGlyphAtlasPage::~CGlyphAtlasPage() |
|
663 { |
|
664 iLink.Deque(); |
|
665 iGlyphImage.Close(); |
|
666 } |
|
667 |
|
668 /** |
|
669 Adds a glyph to the page from a bitmap glyph and gets the glyph image info back. |
|
670 An RSgImage handle is acquired for the glyph. |
|
671 If there is not enough specialised graphics memory to create a RSgImage, then the |
|
672 least recently used pages are deleted until there there is either enough memory |
|
673 for the creation to be successful or if there are no more pages to delete (in |
|
674 which case an appropriate out of memory error message is returned). |
|
675 |
|
676 @param[in] aArgs The information needed to create a glyph. |
|
677 @param[out] aGlyphImageInfo Upon return contains all the glyph image information needed to use the |
|
678 glyph in another process. |
|
679 @param[out] aSizeInBytes Upon return contains the size of the added glyph's image data in bytes. |
|
680 @return KErrNone if the glyph was successfully added; |
|
681 KErrNoMemory if there is not enough system memory available; |
|
682 KErrNoGraphicsMemory if there is not enough specialised graphics memory available. |
|
683 */ |
|
684 TInt CGlyphAtlasPage::AddGlyph(const CGlyphAtlas::TAddGlyphArgs& aArgs, TGlyphImageInfo& aGlyphImageInfo, TInt& aSizeInBytes) |
|
685 { |
|
686 const TSize glyphSize(aArgs.iMetrics->Width(), aArgs.iMetrics->Height()); |
|
687 // If glyph has zero size (e.g. space), set glyph data and return |
|
688 if (glyphSize.iWidth == 0 || glyphSize.iHeight == 0) |
|
689 { |
|
690 iPosX = 0; |
|
691 iPosY = 0; |
|
692 iMetrics = *aArgs.iMetrics; |
|
693 iGlyphCode = aArgs.iGlyphCode; |
|
694 iSizeInBytes = 0; |
|
695 iNumGlyphs++; |
|
696 aGlyphImageInfo.iImageId = KSgNullDrawableId; |
|
697 aGlyphImageInfo.iPosX = iPosX; |
|
698 aGlyphImageInfo.iPosY = iPosY; |
|
699 aGlyphImageInfo.iMetrics = iMetrics; |
|
700 return KErrNone; |
|
701 } |
|
702 TUint8* buf = NULL; |
|
703 TSgImageInfo info; |
|
704 info.iSizeInPixels = glyphSize; |
|
705 info.iUsage = ESgUsageBitOpenVgImage; |
|
706 info.iPixelFormat = EUidPixelFormatA_8; |
|
707 TInt dataStride = 0; |
|
708 const TInt KDataArraySize = 256; |
|
709 TUint8 byteDataArray[KDataArraySize]; |
|
710 TUint8* tempBuf = NULL; |
|
711 TUint8* byteDataBuf = NULL; |
|
712 TGlyphBitmapType glyphBitmapType = iFontEntry.Font().GlyphBitmapType(); |
|
713 |
|
714 switch (glyphBitmapType) |
|
715 { |
|
716 case EMonochromeGlyphBitmap: |
|
717 // Decompress to 8bpp buffer |
|
718 dataStride = glyphSize.iWidth; |
|
719 byteDataBuf = byteDataArray; |
|
720 // If data too big to fit in byteDataArray, allocate memory on the heap |
|
721 if (glyphSize.iHeight * glyphSize.iWidth > KDataArraySize) |
|
722 { |
|
723 tempBuf = (TUint8*) User::AllocZ(dataStride * glyphSize.iHeight); |
|
724 if (!tempBuf) |
|
725 { |
|
726 return KErrNoMemory; |
|
727 } |
|
728 byteDataBuf = tempBuf; |
|
729 } |
|
730 else |
|
731 { |
|
732 // fill array with zeros. |
|
733 Mem::FillZ(&byteDataArray, KDataArraySize); |
|
734 } |
|
735 |
|
736 if (glyphSize.iWidth >32) |
|
737 { |
|
738 DecodeBinaryDataExLarge(glyphSize, aArgs.iBitmapPointer, byteDataBuf); |
|
739 } |
|
740 else |
|
741 { |
|
742 DecodeBinaryData(glyphSize, aArgs.iBitmapPointer, byteDataBuf); |
|
743 } |
|
744 buf = byteDataBuf; |
|
745 break; |
|
746 case EAntiAliasedGlyphBitmap: |
|
747 buf = const_cast<TUint8*>(aArgs.iBitmapPointer); |
|
748 dataStride = glyphSize.iWidth; |
|
749 break; |
|
750 default: |
|
751 return KErrNotSupported; |
|
752 } |
|
753 |
|
754 TInt err = iGlyphImage.Create(info, buf, dataStride); |
|
755 |
|
756 // If RSgImage creation fails due to out of memory, delete the least |
|
757 // recently used pages to free up memory until either creation succeeds or |
|
758 // there are no more pages to remove. |
|
759 TBool morePagesToDelete = ETrue; |
|
760 while ((KErrNoGraphicsMemory == err || KErrNoMemory == err) && morePagesToDelete) |
|
761 { |
|
762 // Delete least used page. Can delete all pages if necessary as this |
|
763 // page has not been added to the LRU array yet. |
|
764 morePagesToDelete = iFontEntry.GlyphAtlas().DeleteLeastRecentlyUsedPage(ETrue); |
|
765 err = iGlyphImage.Create(info, buf, dataStride); |
|
766 } |
|
767 |
|
768 User::Free(tempBuf); |
|
769 |
|
770 if (KErrNone != err) |
|
771 { |
|
772 return err; |
|
773 } |
|
774 aSizeInBytes = glyphSize.iHeight * glyphSize.iWidth; |
|
775 iGlyphCode = aArgs.iGlyphCode; |
|
776 iPosX = 0; |
|
777 iPosY = 0; |
|
778 iMetrics = *aArgs.iMetrics; |
|
779 // As the image is stored as one byte per pixel, the size in bytes is |
|
780 // just the number of pixels. |
|
781 // TODO: Replace estimating size with call to SgImage/SgDriver to get accurate size. |
|
782 iSizeInBytes += aSizeInBytes; |
|
783 iNumGlyphs++; |
|
784 aGlyphImageInfo.iPosX = iPosX; |
|
785 aGlyphImageInfo.iPosY = iPosY; |
|
786 aGlyphImageInfo.iImageId = iGlyphImage.Id(); |
|
787 aGlyphImageInfo.iMetrics = iMetrics; |
|
788 return err; |
|
789 } |
|
790 |
|
791 /** |
|
792 Retrieves the glyph image information for the given glyph code necessary to be |
|
793 able to use the glyph in another process. |
|
794 |
|
795 @param aGlyphCode The glyph code for the glyph being requested |
|
796 @param aGlyphImageInfo Upon return contains all the glyph image information needed to use the |
|
797 glyph in another process if the glyph is contained in the page. |
|
798 */ |
|
799 void CGlyphAtlasPage::GetGlyph(TUint aGlyphCode, TGlyphImageInfo& aGlyphImageInfo) const |
|
800 { |
|
801 __ASSERT_DEBUG(iGlyphCode == aGlyphCode, Panic(EFbsPanicGlyphAtlasInconsistentState)); |
|
802 aGlyphImageInfo.iMetrics = iMetrics; |
|
803 aGlyphImageInfo.iPosX = iPosX; |
|
804 aGlyphImageInfo.iPosY = iPosY; |
|
805 aGlyphImageInfo.iImageId = iGlyphImage.Id(); |
|
806 } |
|
807 |
|
808 /** |
|
809 Gets the amount of memory allocated for the image data for this page. |
|
810 |
|
811 @return The size of the page's image data in bytes. |
|
812 */ |
|
813 TInt CGlyphAtlasPage::SizeInBytes() const |
|
814 { |
|
815 return iSizeInBytes; |
|
816 } |
|
817 |
|
818 /** |
|
819 Gets the glyph code at the given index associated with the page. |
|
820 |
|
821 @param aIndex The index of the glyph code within the page. |
|
822 @return The glyph code at the given index. |
|
823 */ |
|
824 TUint CGlyphAtlasPage::GlyphCodeAt(TInt aIndex) const |
|
825 { |
|
826 __ASSERT_DEBUG(0 == aIndex, Panic(EFbsPanicGlyphAtlasInconsistentState)); |
|
827 return iGlyphCode; |
|
828 } |
|
829 |
|
830 /** |
|
831 Gets the number of glyphs stored in the page. |
|
832 |
|
833 @return The number of glyphs in the page. |
|
834 */ |
|
835 TInt CGlyphAtlasPage::GlyphCount() const |
|
836 { |
|
837 return iNumGlyphs; |
|
838 } |
|
839 |
|
840 /** |
|
841 Gets the font entry which owns the page. |
|
842 |
|
843 @return The font entry which owns the page. |
|
844 */ |
|
845 CGlyphAtlasFontEntry& CGlyphAtlasPage::FontEntry() const |
|
846 { |
|
847 return iFontEntry; |
|
848 } |
|
849 |
|
850 |
|
851 void CGlyphAtlasPage::MoveToFirstInQueue(TDblQue<CGlyphAtlasPage>& aList) |
|
852 { |
|
853 if(!aList.IsFirst(this)) |
|
854 { |
|
855 iLink.Deque(); |
|
856 aList.AddFirst(*this); |
|
857 } |
|
858 } |
|
859 |
|
860 // === Static Utility Functions === |
|
861 |
|
862 /** |
|
863 Combines 2 8-bit unsigned integers into a 16-bit integer. |
|
864 @param aPtr A pointer to a source buffer of 2 8-bit unsigned integers. |
|
865 @return The two 8-bit integers combined into a 16-bit integer. |
|
866 */ |
|
867 static TInt16 Load16(const TUint8* aPtr) |
|
868 { |
|
869 return TInt16(aPtr[0]+(aPtr[1]<<8)); |
|
870 } |
|
871 |
|
872 /** |
|
873 Decodes binary data for monochrome glyph bitmap. |
|
874 |
|
875 @param aGlyphSize size of glyph in pixels. |
|
876 @param aEncodedData Pointer to an encoded source buffer. |
|
877 @param aByteData Pointer to a destination buffer (8 bits per pixel). |
|
878 */ |
|
879 void DecodeBinaryData(const TSize& aGlyphSize, const TUint8* aEncodedData, TUint8* aByteData) |
|
880 { |
|
881 const TInt dataHeight = aGlyphSize.iHeight; |
|
882 const TInt dataWidth = aGlyphSize.iWidth; |
|
883 TUint32 binaryData = 0; |
|
884 |
|
885 // The data is encoded as follows: |
|
886 // 1 bit for a multiple lines flag (1=yes) |
|
887 // 4 bits for a repeat count which represents: |
|
888 // -if the multiple line flag is 0 the number of lines whose data is repeated |
|
889 // -if the flag is 1, the number of lines which differ from line to line. |
|
890 // n bits representing the data at 1 bit per pixel, where: |
|
891 // -if the multiple line flag is 0, n is the width of the glyph. |
|
892 // -if the flag is 1, n is width of glyph multiplied by the repeat count for this block of data. |
|
893 // This information presented in continuous packed blocks of: |
|
894 // [data][reps][multiLineFlag] |
|
895 TInt bitIndex = 0; |
|
896 TInt16 repeatCount = 0; |
|
897 TUint8* byteDataPtr = aByteData; |
|
898 TUint8* byteDataPtrLimit = NULL; |
|
899 for (TInt charLine = 0; charLine < dataHeight; charLine += repeatCount) // for lines in the character... |
|
900 { |
|
901 // Get first 5 bits of block |
|
902 repeatCount = Load16(aEncodedData + (bitIndex >> 3)); |
|
903 repeatCount >>= bitIndex & 7; |
|
904 // strip out multiple line flag (1st bit) |
|
905 TInt multiLineFlag = repeatCount & 1; |
|
906 // Get repeat count (last 4 bits) |
|
907 repeatCount >>= 1; |
|
908 repeatCount &= 0xf; |
|
909 // move bit index to point to first bit of image data |
|
910 bitIndex += 5; |
|
911 // end pointer of destination buffer for this block of data to fill |
|
912 byteDataPtrLimit = aByteData + dataWidth * (charLine + repeatCount); |
|
913 if (multiLineFlag) |
|
914 { |
|
915 while (byteDataPtr < byteDataPtrLimit) |
|
916 { |
|
917 // Pointer to beginning of data in source buffer for current scanline |
|
918 TInt charDataOffsetPtr = TInt(aEncodedData) + (bitIndex >> 3); |
|
919 // Pointer to beginning of current word. |
|
920 TUint32* charDataWord = (TUint32*)(charDataOffsetPtr &~ 3); |
|
921 // Number of bits to shift in current word to get to beginning of scanline |
|
922 TInt bitShift = bitIndex & 7; |
|
923 bitShift += (charDataOffsetPtr & 3) << 3; |
|
924 // Copy scanline data into temporary buffer |
|
925 binaryData = (*charDataWord++) >> bitShift; |
|
926 // If data crosses a word boundary, get the rest of the data from next word. |
|
927 if (bitShift) |
|
928 { |
|
929 binaryData |= (*charDataWord << (32-bitShift)); |
|
930 } |
|
931 Convert1BppTo8Bpp(binaryData, byteDataPtr, byteDataPtr + dataWidth); |
|
932 // Move bit index to beginning of next block |
|
933 bitIndex += dataWidth; |
|
934 } |
|
935 } |
|
936 else |
|
937 { |
|
938 TInt charDataOffsetPtr = TInt(aEncodedData) + (bitIndex >> 3); |
|
939 TUint32* charDataWord = (TUint32*)(charDataOffsetPtr &~ 3); |
|
940 TInt bitShift = bitIndex & 7; |
|
941 bitShift += (charDataOffsetPtr & 3) << 3; |
|
942 binaryData = (*charDataWord++) >> bitShift; |
|
943 if (bitShift) |
|
944 { |
|
945 binaryData |= (*charDataWord << (32-bitShift)); |
|
946 } |
|
947 TUint8* startByteDataPtr = byteDataPtr; |
|
948 Convert1BppTo8Bpp(binaryData, byteDataPtr, byteDataPtr + dataWidth); |
|
949 |
|
950 while (byteDataPtr < byteDataPtrLimit) |
|
951 { |
|
952 Mem::Copy(byteDataPtr, startByteDataPtr, dataWidth); |
|
953 byteDataPtr += dataWidth; |
|
954 } |
|
955 bitIndex += dataWidth; |
|
956 } |
|
957 } |
|
958 } |
|
959 |
|
960 /** |
|
961 Converts binary data in 1 bit per pixel format to 8 bits per pixel format, where |
|
962 0 is converted to 0x00 and 1 is converted to 0xFF. |
|
963 |
|
964 @param aSrcData Pointer to a 1bpp source buffer. |
|
965 @param aDestDataPtr Pointer to a 8bpp destination buffer. |
|
966 @param aDestDataPtrLimit Pointer to the end position in destination buffer to convert to. |
|
967 */ |
|
968 void Convert1BppTo8Bpp(TUint32 aSrcData, TUint8*& aDestDataPtr, const TUint8* aDestDataPtrLimit) |
|
969 { |
|
970 for (; aDestDataPtr < aDestDataPtrLimit; ++aDestDataPtr, aSrcData >>= 1) |
|
971 { |
|
972 if (aSrcData&1) |
|
973 { |
|
974 *aDestDataPtr = 0xFF; |
|
975 } |
|
976 } |
|
977 } |
|
978 |
|
979 /** |
|
980 Decodes binary data for extra large monochrome glyph bitmap. |
|
981 |
|
982 @param aGlyphSize Size of glyph in pixels. |
|
983 @param aEncodedData Pointer to an encoded source buffer. |
|
984 @param aByteData Pointer to a destination buffer (8 bits per pixel). |
|
985 */ |
|
986 void DecodeBinaryDataExLarge(const TSize& aGlyphSize, const TUint8* aEncodedData, TUint8* aByteData) |
|
987 { |
|
988 const TInt dataWidth = aGlyphSize.iWidth; |
|
989 const TInt dataHeight = aGlyphSize.iHeight; |
|
990 TInt bitIndex = 0; |
|
991 TInt16 repeatCount = 0; |
|
992 |
|
993 for (TInt charLine = 0; charLine < dataHeight; charLine += repeatCount) // for lines in the character... |
|
994 { |
|
995 repeatCount = Load16(aEncodedData + (bitIndex >> 3)); |
|
996 repeatCount >>= bitIndex & 7; |
|
997 const TInt multiLineFlag = repeatCount & 1; |
|
998 repeatCount >>= 1; |
|
999 repeatCount &= 0xf; |
|
1000 bitIndex += 5; |
|
1001 if (multiLineFlag) |
|
1002 { |
|
1003 for (TInt currentline = 0; currentline < repeatCount; currentline++) |
|
1004 { |
|
1005 CopyCharLine(aByteData, dataWidth, aEncodedData + (bitIndex >> 3), bitIndex & 7, 1); |
|
1006 bitIndex += dataWidth; |
|
1007 } |
|
1008 } |
|
1009 else |
|
1010 { |
|
1011 CopyCharLine(aByteData, dataWidth, aEncodedData + (bitIndex >> 3), bitIndex & 7, repeatCount); |
|
1012 bitIndex += dataWidth; |
|
1013 } |
|
1014 } |
|
1015 } |
|
1016 |
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1017 /** |
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1018 Copies glyph image data line(s)(1 bit per pixel) to an 8 bit per pixel |
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1019 destination buffer. |
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1020 |
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1021 @param aByteDataPtr Pointer to a destination buffer (8bpp). |
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1022 @param aWidthInBytes Stride of the image. |
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1023 @param aSrcData Pointer to a source buffer (1bpp). |
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1024 @param aBitShift Number of bits the source data pointer will be shifted. |
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1025 @param aRepeatCount Number of lines to copy. |
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1026 */ |
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1027 void CopyCharLine(TUint8*& aByteDataPtr, TInt aWidthInBytes, const TUint8* aSrcData, TInt aBitShift, TInt16 aRepeatCount) |
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1028 { |
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1029 aBitShift &= 7; |
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1030 TUint8* ptrLimit = aByteDataPtr + aWidthInBytes; |
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1031 TUint32* dataWord = (TUint32*)(TInt(aSrcData) &~ 3); |
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1032 aBitShift += (TInt(aSrcData) - TInt(dataWord)) << 3; |
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1033 |
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1034 TUint8* startByteDataPtr = aByteDataPtr; |
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1035 TUint32 binaryData = 0; |
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1036 while (aByteDataPtr < ptrLimit) |
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1037 { |
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1038 binaryData = *dataWord++; |
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1039 binaryData >>= aBitShift; |
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1040 if (aBitShift) |
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1041 { |
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1042 binaryData |= (*dataWord << (32-aBitShift)); |
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1043 } |
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1044 TUint8* wordLimit = aByteDataPtr + 32; |
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1045 if (wordLimit > ptrLimit) |
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1046 { |
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1047 wordLimit = ptrLimit; |
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1048 } |
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1049 Convert1BppTo8Bpp(binaryData, aByteDataPtr, wordLimit); |
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1050 } |
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1051 |
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1052 while (aRepeatCount > 1) |
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1053 { |
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1054 Mem::Copy(aByteDataPtr, startByteDataPtr, aWidthInBytes); |
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1055 aByteDataPtr += aWidthInBytes; |
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1056 --aRepeatCount; |
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1057 } |
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1058 } |
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1059 |
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1060 |