1 /* |
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2 * Copyright (c) 2002-2007 Nokia Corporation and/or its subsidiary(-ies). |
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3 * All rights reserved. |
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4 * This component and the accompanying materials are made available |
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5 * under the terms of "Eclipse Public License v1.0" |
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6 * which accompanies this distribution, and is available |
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7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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8 * |
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9 * Initial Contributors: |
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10 * Nokia Corporation - initial contribution. |
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11 * |
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12 * Contributors: |
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13 * |
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14 * Description: Converts color icon to CFbsBitmap |
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15 * |
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16 */ |
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17 |
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18 |
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19 #include <gdi.h> |
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20 #include <fbs.h> |
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21 #include "CSatSColorIconConverter.h" |
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22 #include "TSatBitOP.h" |
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23 #include "SatLog.h" |
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24 |
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25 const TInt KHeaderSize = 6; |
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26 const TInt KClutEntrySize = 3; |
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27 const TInt KRedShift = 16; |
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28 const TInt KGreenShift = 8; |
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29 const TInt KPixelSize = 8; |
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30 |
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31 // ======== MEMBER FUNCTIONS ======== |
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32 |
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33 // ----------------------------------------------------------------------------- |
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34 // CSatSColorIconConverter::CSatSColorIconConverter |
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35 // C++ default constructor can NOT contain any code, that |
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36 // might leave. |
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37 // ----------------------------------------------------------------------------- |
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38 // |
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39 CSatSColorIconConverter::CSatSColorIconConverter() |
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40 { |
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41 LOG( SIMPLE, "SATENGINE: \ |
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42 CSatSColorIconConverter::CSatSColorIconConverter calling - exiting" ) |
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43 } |
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44 |
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45 // ----------------------------------------------------------------------------- |
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46 // CSatSColorIconConverter::CheckDataValidityL |
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47 // (other items were commented in a header). |
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48 // ----------------------------------------------------------------------------- |
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49 // |
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50 void CSatSColorIconConverter::CheckDataValidityL( |
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51 const TDesC8& aData ) const |
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52 { |
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53 LOG( SIMPLE, |
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54 "SATENGINE: CSatSColorIconConverter::CheckDataValidityL calling" ) |
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55 TInt err( KErrNone ); |
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56 const TInt dataLength( aData.Length() ); |
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57 |
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58 if ( dataLength >= KHeaderSize ) |
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59 { |
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60 LOG( SIMPLE, "SATENGINE: CSatSColorIconConverter::CheckDataValidityL \ |
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61 dataLength bigger than KHeaderSize" ) |
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62 const TInt width( aData[0] ); |
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63 const TInt height( aData[1] ); |
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64 const TInt bpp( aData[2] ); |
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65 |
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66 if ( dataLength < ( width * height * bpp / KPixelSize + KHeaderSize ) ) |
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67 { |
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68 LOG( SIMPLE, "SATENGINE: CSatSColorIconConverter::\ |
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69 CheckDataValidityL KErrCorrupt" ) |
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70 err = KErrCorrupt; |
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71 } |
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72 } |
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73 |
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74 else |
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75 { |
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76 LOG( SIMPLE, "SATENGINE: CSatSColorIconConverter::CheckDataValidityL \ |
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77 dataLength less than KHeaderSize" ) |
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78 err = KErrCorrupt; |
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79 } |
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80 |
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81 User::LeaveIfError( err ); |
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82 LOG( SIMPLE, |
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83 "SATENGINE: CSatSColorIconConverter::CheckDataValidityL exiting" ) |
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84 } |
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85 |
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86 // ----------------------------------------------------------------------------- |
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87 // CSatSColorIconConverter::CheckClutValidityL |
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88 // (other items were commented in a header). |
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89 // ----------------------------------------------------------------------------- |
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90 // |
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91 void CSatSColorIconConverter::CheckClutValidityL( |
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92 const TDesC8& aData, |
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93 const TDesC8& aClut ) const |
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94 { |
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95 LOG( SIMPLE, |
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96 "SATENGINE: CSatSColorIconConverter::CheckClutValidityL calling" ) |
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97 const TInt clutEntries( aData[3] ); |
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98 const TInt expectedClutLength( clutEntries * KClutEntrySize ); |
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99 |
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100 if ( aClut.Length() < expectedClutLength ) |
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101 { |
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102 LOG( SIMPLE, |
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103 "SATENGINE: CSatSColorIconConverter::CheckClutValidityL KErrCorrupt" ) |
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104 User::Leave( KErrCorrupt ); |
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105 } |
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106 |
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107 LOG( SIMPLE, |
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108 "SATENGINE: CSatSColorIconConverter::CheckClutValidityL exiting" ) |
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109 } |
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110 |
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111 // ----------------------------------------------------------------------------- |
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112 // CSatSColorIconConverter::ConvertL |
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113 // Converts color icon to CFbsBitamp. |
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114 // |
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115 // aData has following format( ETSI TS 131 102 V4.10.0 ). |
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116 // 1 byte: Icon width |
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117 // 2 byte: Icon height |
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118 // 3 byte: Bits per raster image point. (1 to 8) |
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119 // 7 to end byte: Image body. |
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120 // |
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121 // The image body has following format. |
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122 // |
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123 // Byte 1 Byte 2 |
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124 // 1001 1100 1110 1100 .... |
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125 // |
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126 // If the Bits per pixel ratio is 3 then |
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127 // 1st raster point CLUT reference is 100 |
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128 // 2nd ------------ "" -------------- 111 |
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129 // 3rd ------------ "" -------------- 001 |
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130 // 4th ------------ "" -------------- 110 |
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131 // etc... |
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132 // |
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133 // One CLUT entry is 3 bytes and each byte defines the intensity of color (RGB). |
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134 // The CLUT is in following format: |
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135 // 1st CLUT entry |
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136 // 1 byte Red color intensity |
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137 // 2 byte Green color intensity |
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138 // 3 byte Blue color intensity |
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139 // 2nd CLUT entry |
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140 // 4 byte Red color intensity |
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141 // 5 byte Green color intensity |
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142 // 6 byte Blue color intensity |
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143 // (other items were commented in a header). |
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144 // ----------------------------------------------------------------------------- |
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145 // |
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146 CFbsBitmap* CSatSColorIconConverter::ConvertL( |
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147 const TDesC8& aData, |
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148 const TDesC8& aClut ) const |
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149 { |
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150 LOG( SIMPLE, "SATENGINE: CSatSColorIconConverter::ConvertL calling" ) |
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151 |
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152 // Check that data is valid. |
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153 CheckDataValidityL( aData ); |
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154 CheckClutValidityL( aData, aClut ); |
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155 |
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156 const TUint8 width( aData[0] ); |
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157 const TUint8 height( aData[1] ); |
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158 |
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159 // Create the bitmap |
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160 CFbsBitmap* bitmap = CreateBitmapL( width, height, EColor16M ); |
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161 |
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162 // Separate the header from image body. |
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163 const TPtrC8 iconData( |
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164 aData.Mid( KHeaderSize, aData.Length() - KHeaderSize ) ); |
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165 |
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166 const TUint8 bpp( aData[2] ); |
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167 TBitmapUtil bitmapUtil( bitmap ); |
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168 bitmapUtil.Begin( TPoint( 0, 0 ) ); |
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169 TInt x(0); |
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170 TInt y(0); |
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171 // Go through the image body to convert the data. |
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172 for ( y = 0; y < height; y++ ) |
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173 { |
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174 bitmapUtil.SetPos( TPoint( 0, y ) ); |
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175 |
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176 for ( x = 0; x < width; x++ ) |
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177 { |
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178 // Calculate the starting bit index of current pixel |
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179 // location. |
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180 const TInt startBit( ( y * width + x ) * bpp ); |
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181 |
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182 // Get the entry from icon data. |
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183 const TUint8 clutReference( |
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184 TSatBitOP::ExtractBits( startBit, bpp, iconData ) ); |
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185 |
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186 // clut entry is 3 bytes long and therefore the start of |
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187 // the clut entry is multiplied with 3. |
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188 const TInt clutEntryPoint( clutReference * KClutEntrySize ); |
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189 |
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190 // Take the color intensities from clut entry. |
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191 const TUint red( aClut[clutEntryPoint] ); |
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192 const TUint green( aClut[clutEntryPoint + 1] ); |
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193 const TUint blue( aClut[clutEntryPoint + 2] ); |
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194 |
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195 // Cannot use TRgb here, because of different interpration of |
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196 // r,g,b order than bitmapUtil. |
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197 bitmapUtil.SetPixel( |
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198 red << KRedShift | green << KGreenShift | blue ); |
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199 |
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200 bitmapUtil.IncXPos(); |
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201 } |
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202 } |
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203 LOG3( SIMPLE,"SATENGINE: CSatSColorIconConverter::ConvertL, \ |
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204 x: %d, y: %d", x, y ) |
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205 bitmapUtil.End(); |
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206 |
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207 LOG( SIMPLE, "SATENGINE: CSatSColorIconConverter::ConvertL exiting" ) |
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208 return bitmap; |
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209 } |
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