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1 // Copyright (c) 2000-2009 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 <graphicsaccelerator.h> |
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17 #include <fbs.h> |
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18 |
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19 |
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20 /** |
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21 Constructor with a software or hardware bitmap. |
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22 Its type is initialised to EFbsBitmap or EHardwareBitmap accordingly. |
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23 |
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24 @param aBitmap The bitmap which the object will access. |
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25 */ |
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26 EXPORT_C TAcceleratedBitmapSpec::TAcceleratedBitmapSpec(CFbsBitmap* aBitmap) |
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27 { |
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28 RHardwareBitmap hwb(aBitmap->HardwareBitmapHandle()); |
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29 if(hwb.iHandle) |
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30 { |
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31 ::new (this) TAcceleratedBitmapSpec(hwb); |
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32 return; |
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33 } |
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34 iType = EFbsBitmap; |
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35 iHandle = REINTERPRET_CAST(TInt,aBitmap); |
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36 |
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37 iLockStatus = EBitmapNeedsLocking; |
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38 |
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39 iSpare1 = 0; |
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40 iSpare2 = 0; |
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41 } |
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42 |
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43 /** |
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44 Constructor with a hardware bitmap. Its type is initialised to EHardwareBitmap. |
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45 |
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46 @param aBitmap The bitmap which the object will access. |
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47 */ |
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48 EXPORT_C TAcceleratedBitmapSpec::TAcceleratedBitmapSpec(RHardwareBitmap aBitmap) |
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49 { |
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50 iType = EHardwareBitmap; |
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51 iHandle = aBitmap.iHandle; |
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52 iLockStatus = EBitmapIsStatic; |
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53 iSpare1 = 0; |
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54 iSpare2 = 0; |
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55 } |
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56 |
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57 /** |
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58 Fills a TAcceleratedBitmapInfo structure with data for the bitmap. |
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59 |
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60 This data is only valid for the duration of any processing between a Lock()/Unlock() |
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61 pair. |
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62 |
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63 For compressed bitmaps the line pitch has no meaning so it is set to the negation |
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64 of the compression type as defined by TBitmapfileCompression. |
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65 |
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66 @param aInfo On return, holds the information needed to directly access the |
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67 bitmap. |
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68 @return KErrNone if sucessful, otherwise one of the system error codes, including |
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69 KErrUnknown if the object's type is ENoBitmap. |
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70 */ |
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71 EXPORT_C TInt TAcceleratedBitmapSpec::GetInfo(TAcceleratedBitmapInfo& aInfo) const |
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72 { |
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73 switch(iType) |
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74 { |
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75 case EFbsBitmap: |
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76 { |
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77 CFbsBitmap* bmp = REINTERPRET_CAST(CFbsBitmap*,iHandle); |
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78 aInfo.iDisplayMode = bmp->DisplayMode(); |
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79 aInfo.iAddress = REINTERPRET_CAST(TUint8*,bmp->DataAddress()); |
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80 aInfo.iSize = bmp->SizeInPixels(); |
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81 SEpocBitmapHeader header = bmp->Header(); |
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82 if (header.iCompression != ENoBitmapCompression) |
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83 { |
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84 aInfo.iLinePitch = -header.iCompression; |
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85 } |
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86 else |
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87 { |
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88 aInfo.iLinePitch = bmp->ScanLineLength(aInfo.iSize.iWidth,aInfo.iDisplayMode); |
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89 } |
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90 TUid extendedType = bmp->ExtendedBitmapType(); |
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91 if (extendedType != KNullUid) |
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92 { |
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93 aInfo.iPixelShift = extendedType.iUid; |
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94 aInfo.iDataSize = bmp->DataSize(); |
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95 } |
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96 else |
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97 { |
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98 aInfo.iPhysicalAddress = NULL; |
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99 switch(aInfo.iDisplayMode) |
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100 { |
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101 case ENone: |
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102 aInfo.iPixelShift = -1; |
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103 break; |
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104 case EGray2: |
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105 aInfo.iPixelShift = 0; |
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106 break; |
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107 case EGray4: |
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108 aInfo.iPixelShift = 1; |
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109 break; |
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110 case EGray16: |
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111 case EColor16: |
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112 aInfo.iPixelShift = 2; |
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113 break; |
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114 case EGray256: |
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115 case EColor256: |
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116 aInfo.iPixelShift = 3; |
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117 break; |
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118 case EColor4K: |
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119 case EColor64K: |
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120 aInfo.iPixelShift = 4; |
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121 break; |
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122 case EColor16M: |
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123 case ERgb: |
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124 case EColor16MU: |
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125 case EColor16MA: |
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126 case EColor16MAP: |
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127 aInfo.iPixelShift = 5; |
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128 break; |
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129 default: |
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130 aInfo.iPixelShift = -1; |
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131 break; |
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132 } |
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133 } |
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134 } |
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135 return KErrNone; |
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136 |
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137 case EHardwareBitmap: |
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138 return RHardwareBitmap(iHandle).GetInfo(aInfo); |
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139 |
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140 case ENoBitmap: |
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141 default: |
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142 Mem::FillZ(&aInfo,sizeof(aInfo)); |
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143 return KErrUnknown; |
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144 } |
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145 } |
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146 |
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147 /** Locks the bitmap, if required. |
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148 @param aCount Reference to a bitmap lock count object for nesting |
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149 (only the first instance does the locking). */ |
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150 EXPORT_C void TAcceleratedBitmapSpec::DoLock(TBitmapLockCount& aCount) |
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151 { |
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152 switch(iType) |
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153 { |
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154 case EFbsBitmap: |
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155 if(aCount.Inc()==0) |
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156 REINTERPRET_CAST(CFbsBitmap*,iHandle)->BeginDataAccess(); |
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157 break; |
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158 |
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159 case ENoBitmap: |
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160 case EHardwareBitmap: |
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161 default: |
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162 // Never needs locking |
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163 return; |
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164 } |
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165 } |
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166 |
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167 /** Locks the bitmap, if required, setting the accelerated |
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168 bitmap information address. |
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169 @param aCount Reference to a bitmap lock count object for nesting |
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170 (only the first instance does the locking). |
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171 @param aInfo Information structure to set the address in. */ |
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172 EXPORT_C void TAcceleratedBitmapSpec::DoLock(TBitmapLockCount& aCount,TAcceleratedBitmapInfo& aInfo) |
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173 { |
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174 switch(iType) |
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175 { |
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176 case EFbsBitmap: |
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177 { |
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178 if(aCount.Inc()==0) |
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179 REINTERPRET_CAST(CFbsBitmap*,iHandle)->BeginDataAccess(); |
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180 |
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181 CFbsBitmap* bmp = REINTERPRET_CAST(CFbsBitmap*,iHandle); |
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182 aInfo.iAddress = REINTERPRET_CAST(TUint8*,bmp->DataAddress()); |
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183 } |
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184 break; |
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185 |
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186 case ENoBitmap: |
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187 case EHardwareBitmap: |
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188 default: |
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189 // Never needs locking |
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190 return; |
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191 } |
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192 } |
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193 |
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194 /** Unlocks the bitmap, if required. |
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195 @param aCount Reference to a bitmap lock count object for nesting |
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196 (only the last instance does the unlocking). */ |
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197 EXPORT_C void TAcceleratedBitmapSpec::DoUnlock(TBitmapLockCount& aCount) |
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198 { |
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199 switch(iType) |
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200 { |
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201 case EFbsBitmap: |
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202 if(aCount.Dec()==0) |
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203 REINTERPRET_CAST(CFbsBitmap*,iHandle)->EndDataAccess(); |
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204 break; |
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205 |
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206 case ENoBitmap: |
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207 case EHardwareBitmap: |
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208 default: |
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209 // Never needs unlocking |
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210 return; |
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211 } |
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212 } |
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213 |