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1 // Copyright (c) 1997-2009 Nokia Corporation and/or its subsidiary(-ies). |
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2 // All rights reserved. |
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3 // This component and the accompanying materials are made available |
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4 // under the terms of "Eclipse Public License v1.0" |
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5 // which accompanies this distribution, and is available |
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6 // at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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7 // |
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8 // Initial Contributors: |
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9 // Nokia Corporation - initial contribution. |
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10 // |
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11 // Contributors: |
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12 // |
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13 // Description: |
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14 // |
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15 |
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16 #include "BMCONV.H" |
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17 |
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18 BitmapLoader::BitmapLoader(): |
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19 iNumBmpColors(0), |
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20 iBmpColors(NULL), |
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21 iBmpBits(NULL), |
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22 iAlphaBits(NULL) |
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23 {} |
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24 |
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25 BitmapLoader::~BitmapLoader() |
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26 { |
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27 delete [] iBmpColors; |
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28 delete [] iBmpBits; |
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29 delete [] iAlphaBits; |
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30 } |
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31 |
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32 int BitmapLoader::LoadBitmap(char* aFileName,int aBpp,TBitmapColor aColor,SEpocBitmapHeader*& aPbm) |
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33 { |
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34 char sig[2]; |
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35 |
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36 #if defined(__MSVCDOTNET__) || defined(__LINUX__) || defined(__TOOLS2__) |
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37 fstream file(aFileName, ios::in | ios::binary); |
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38 #else //!__MSVCDOTNET__ |
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39 fstream file(aFileName, ios::in | ios::binary | ios::nocreate); |
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40 #endif //__MSVCDOTNET__ |
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41 |
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42 if (file.is_open()==0) |
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43 return Files; |
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44 file.read(sig,2); |
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45 file.close(); |
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46 if (file.gcount()!=2) |
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47 return SourceFile ; |
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48 if (sig[0]!='B'||sig[1]!='M') |
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49 return SourceFile; |
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50 |
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51 int ret = DoLoad(aFileName); |
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52 if (!ret && aColor==EColorBitmapAlpha) |
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53 { |
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54 int fileNameLen = strlen(aFileName); |
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55 char* alphaFileName = new char[fileNameLen + 7];// -alpha suffix is 6 chars, plus NUL termination |
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56 if (alphaFileName == NULL) |
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57 return NoMemory; |
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58 int dotPos = -1; |
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59 for (int i = 0; i < fileNameLen; ++i) |
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60 if (aFileName[i]=='.') |
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61 dotPos=i; |
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62 int prefixLen = (dotPos>=0?dotPos:fileNameLen); |
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63 memcpy(alphaFileName,aFileName,prefixLen); |
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64 const char* suffix = "-alpha"; |
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65 memcpy(alphaFileName+prefixLen,suffix,6); |
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66 if (dotPos>=0) |
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67 memcpy(alphaFileName+prefixLen+6,aFileName+dotPos,fileNameLen-dotPos); |
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68 *(alphaFileName + fileNameLen + 6) = '\0'; |
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69 ret = DoLoadAlpha(alphaFileName); // overlay alpha data from separate file |
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70 delete [] alphaFileName; |
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71 } |
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72 if (!ret) |
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73 ret = DoConvert(aBpp,aColor,aPbm); |
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74 return ret; |
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75 } |
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76 |
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77 int BitmapLoader::DoLoad(char* aFileName) |
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78 { |
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79 #if defined(__MSVCDOTNET__) || defined(__TOOLS2__) |
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80 fstream file(aFileName, ios::in | ios::binary); |
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81 #else //!__MSVCDOTNET__ |
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82 fstream file(aFileName, ios::in | ios::binary | ios::nocreate); |
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83 #endif //__MSVCDOTNET__ |
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84 if (file.is_open()==0) |
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85 return Files; |
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86 TBitmapFileHeader bmpfile; |
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87 long size=sizeof(TBitmapFileHeader); |
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88 file.read((char *)&bmpfile,size); |
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89 if (file.gcount()!=size) |
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90 return SourceFile; |
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91 size=sizeof(TBitmapInfoHeader); |
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92 file.read((char *)&iBmpHeader,size); |
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93 if (file.gcount()!=size) |
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94 return SourceFile; |
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95 if (iBmpHeader.biCompression != 0) |
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96 return UnknownCompression; |
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97 size=bmpfile.bfSize-sizeof(TBitmapInfoHeader)-sizeof(TBitmapFileHeader); |
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98 long bitcount=iBmpHeader.biBitCount; |
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99 long colors=iBmpHeader.biClrUsed; |
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100 if (colors==0) |
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101 { |
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102 if (bitcount==24) |
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103 iNumBmpColors=0; |
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104 else if (bitcount==32) |
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105 iNumBmpColors=0;//See MSDN - BITMAPFILEHEADER and BITMAPINFOHEADER structures. |
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106 //If biCompression is 0 - we don't have TRgbQuad array! |
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107 else |
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108 iNumBmpColors=1<<bitcount; |
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109 } |
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110 else |
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111 iNumBmpColors=colors; |
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112 if (iNumBmpColors > 256) |
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113 return SourceFile; |
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114 if (iNumBmpColors>0) |
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115 { |
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116 iBmpColors = new TRgbQuad[iNumBmpColors]; |
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117 if (iBmpColors == NULL) |
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118 return NoMemory; |
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119 memset(iBmpColors,0,iNumBmpColors*sizeof(TRgbQuad)); |
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120 } |
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121 size-=iNumBmpColors*sizeof(TRgbQuad); |
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122 iBmpBits = new char[size]; |
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123 if (iBmpBits == NULL) |
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124 return NoMemory; |
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125 memset(iBmpBits,0xff,size); |
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126 // DEF102183: Graphics tools fail to run after building with MS VC8. |
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127 if(iBmpColors != NULL) |
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128 { |
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129 file.read((char *)iBmpColors,iNumBmpColors*sizeof(TRgbQuad)); |
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130 if (file.gcount()!=(int)(iNumBmpColors*sizeof(TRgbQuad))) |
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131 return SourceFile; |
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132 } |
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133 file.read(iBmpBits,size); |
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134 file.close(); |
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135 if (file.gcount()!=size) |
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136 return SourceFile; |
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137 return NoError; |
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138 } |
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139 |
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140 int BitmapLoader::DoLoadAlpha(char* aAlphaFileName) |
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141 { |
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142 #if defined(__MSVCDOTNET__) || defined(__TOOLS2__) |
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143 fstream file(aAlphaFileName, ios::in | ios::binary); |
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144 #else //!__MSVCDOTNET__ |
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145 fstream file(aAlphaFileName, ios::in | ios::binary | ios::nocreate); |
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146 #endif //__MSVCDOTNET__ |
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147 if (file.is_open()==0) |
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148 return AlphaFiles; |
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149 TBitmapFileHeader alphaBmpfile; |
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150 long size=sizeof(TBitmapFileHeader); |
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151 file.read((char *)&alphaBmpfile,size); |
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152 if (file.gcount()!=size) |
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153 return SourceFile; |
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154 size=sizeof(TBitmapInfoHeader); |
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155 TBitmapInfoHeader alphaBmpInfo; |
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156 file.read((char *)&alphaBmpInfo,size); |
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157 if (file.gcount()!=size) |
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158 return SourceFile; |
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159 if (alphaBmpInfo.biCompression != 0) |
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160 return UnknownCompression; |
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161 if (alphaBmpInfo.biWidth != iBmpHeader.biWidth || alphaBmpInfo.biHeight != iBmpHeader.biHeight) |
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162 return AlphaDimensions; |
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163 if (alphaBmpInfo.biBitCount != 8) |
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164 return AlphaBpp; |
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165 size=alphaBmpfile.bfSize-sizeof(TBitmapInfoHeader)-sizeof(TBitmapFileHeader); |
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166 long numBmpColors=alphaBmpInfo.biClrUsed; |
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167 if (numBmpColors == 0) |
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168 numBmpColors = 256; |
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169 if (numBmpColors != 256) |
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170 return SourceFile; |
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171 size-=numBmpColors*sizeof(TRgbQuad); |
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172 iAlphaBits = new char[size]; |
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173 if (iAlphaBits == NULL) |
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174 { |
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175 return NoMemory; |
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176 } |
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177 memset(iAlphaBits,0xff,size); |
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178 char* bmpColors = new char[numBmpColors*sizeof(TRgbQuad)]; |
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179 file.read((char *)bmpColors,numBmpColors*sizeof(TRgbQuad)); |
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180 delete [] bmpColors; // we aren't interested in the palette data for the 8bpp grayscale alpha bmp |
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181 if (file.gcount()!=(int)(numBmpColors*sizeof(TRgbQuad))) |
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182 return SourceFile; |
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183 file.read(iAlphaBits,size); |
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184 file.close(); |
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185 if (file.gcount()!=size) |
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186 return SourceFile; |
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187 return NoError; |
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188 } |
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189 |
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190 TRgb BitmapLoader::GetBmpPixel(long aXCoord,long aYCoord) |
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191 { |
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192 TRgb darkgray(128,128,128); |
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193 TRgb darkgrayex(127,127,127); |
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194 TRgb lightgray(192,192,192); |
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195 TRgb lightgrayex(187,187,187); |
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196 unsigned char col; |
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197 TRgb color; |
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198 |
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199 switch(iBmpHeader.biBitCount) |
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200 { |
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201 case 1: |
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202 col=iBmpBits[(iBmpHeader.biHeight-aYCoord-1)*(((iBmpHeader.biWidth+31)>>5)<<2)+(aXCoord>>3)]; |
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203 col&=(0x80>>(aXCoord%8)); |
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204 if (iBmpColors) |
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205 { |
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206 TRgbQuad rgbq; |
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207 if (col) |
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208 rgbq = iBmpColors[1]; |
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209 else |
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210 rgbq = iBmpColors[0]; |
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211 color = TRgb(rgbq.iRed,rgbq.iGreen,rgbq.iBlue); |
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212 } |
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213 else |
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214 { |
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215 if (col) |
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216 color = TRgb(0x00ffffff); |
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217 else |
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218 color = TRgb(0); |
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219 } |
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220 break; |
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221 case 4: |
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222 col=iBmpBits[(iBmpHeader.biHeight-aYCoord-1)*(((iBmpHeader.biWidth+7)>>3)<<2)+(aXCoord>>1)]; |
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223 if (aXCoord%2==0) |
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224 col=(unsigned char)(col>>4); |
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225 col&=0x0f; |
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226 if (iBmpColors) |
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227 { |
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228 TRgbQuad rgbq = iBmpColors[col]; |
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229 color = TRgb(rgbq.iRed,rgbq.iGreen,rgbq.iBlue); |
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230 } |
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231 else |
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232 { |
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233 col *= 17; |
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234 color = TRgb(col,col,col); |
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235 } |
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236 break; |
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237 case 8: |
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238 col=iBmpBits[(iBmpHeader.biHeight-aYCoord-1)*((iBmpHeader.biWidth+3)&~3)+aXCoord]; |
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239 if (iBmpColors) |
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240 { |
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241 TRgbQuad rgbq = iBmpColors[col]; |
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242 color = TRgb(rgbq.iRed,rgbq.iGreen,rgbq.iBlue); |
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243 } |
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244 else |
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245 color = TRgb(col,col,col); |
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246 break; |
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247 case 16: |
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248 { |
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249 unsigned short int* wordptr = (unsigned short int*)&iBmpBits[(iBmpHeader.biHeight-aYCoord-1)*(((iBmpHeader.biWidth+1)&~1)<<1)+(aXCoord<<1)]; |
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250 color = TRgb((*wordptr&0x7c)>>10,(*wordptr&0x3e)>>5,(*wordptr&0x1f)); |
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251 } |
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252 break; |
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253 case 24: |
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254 { |
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255 TRgbTriple rgbcol = *((TRgbTriple *)&(iBmpBits[(iBmpHeader.biHeight-aYCoord-1)*((3*iBmpHeader.biWidth+3)&~3)+aXCoord+(aXCoord<<1)])); |
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256 color = TRgb(rgbcol.rgbtRed,rgbcol.rgbtGreen,rgbcol.rgbtBlue); |
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257 } |
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258 break; |
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259 case 32: |
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260 { |
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261 unsigned long int* dwordptr = (unsigned long int*)&iBmpBits[(iBmpHeader.biHeight-aYCoord-1)*((iBmpHeader.biWidth)<<2)+(aXCoord<<2)]; |
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262 color = TRgb((*dwordptr&0xff0000)>>16,(*dwordptr&0xff00)>>8,*dwordptr&0xff); |
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263 } |
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264 break; |
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265 default: |
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266 break; |
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267 } |
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268 if (color == darkgray) |
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269 color = darkgrayex; |
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270 else if (color == lightgray) |
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271 color = lightgrayex; |
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272 return color; |
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273 } |
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274 |
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275 unsigned char BitmapLoader::GetAlphaPixel(long aXCoord,long aYCoord) |
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276 { |
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277 return iAlphaBits[(iBmpHeader.biHeight-aYCoord-1)*((iBmpHeader.biWidth+3)&~3)+aXCoord]; |
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278 } |
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279 |
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280 int BitmapLoader::DoConvert(int aBpp,TBitmapColor aColor,SEpocBitmapHeader*& aPbm) |
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281 { |
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282 bool useAlpha = (aColor==EColorBitmapAlpha || aColor==EColorBitmapAlphaPM); |
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283 long desttwipswidth = 0; |
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284 long desttwipsheight = 0; |
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285 |
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286 long bytewidth = BitmapUtils::ByteWidth(iBmpHeader.biWidth,aBpp); |
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287 long destlength = iBmpHeader.biHeight * bytewidth; |
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288 |
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289 if (iBmpHeader.biXPelsPerMeter>0) |
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290 desttwipswidth = iBmpHeader.biWidth*1440000/254/iBmpHeader.biXPelsPerMeter; |
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291 if (iBmpHeader.biYPelsPerMeter>0) |
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292 desttwipsheight = iBmpHeader.biHeight*1440000/254/iBmpHeader.biYPelsPerMeter; |
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293 |
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294 aPbm = (SEpocBitmapHeader*)new char[sizeof(SEpocBitmapHeader) + destlength]; |
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295 if (aPbm == NULL) |
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296 return NoMemory; |
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297 memset(aPbm,0,sizeof(SEpocBitmapHeader)); |
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298 |
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299 // aBitmap->iByteWidth = bytewidth; |
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300 // aBitmap->iDataOffset = sizeof(Bitmap); |
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301 |
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302 aPbm->iBitmapSize = sizeof(SEpocBitmapHeader) + destlength; |
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303 aPbm->iStructSize = sizeof(SEpocBitmapHeader); |
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304 aPbm->iWidthInPixels = iBmpHeader.biWidth; |
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305 aPbm->iHeightInPixels = iBmpHeader.biHeight; |
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306 aPbm->iWidthInTwips = desttwipswidth; |
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307 aPbm->iHeightInTwips = desttwipsheight; |
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308 aPbm->iBitsPerPixel = aBpp; |
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309 aPbm->iColor = aColor; |
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310 aPbm->iPaletteEntries = 0; |
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311 aPbm->iCompression = ENoBitmapCompression; |
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312 |
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313 char* pbmBits = ((char*)aPbm) + sizeof(SEpocBitmapHeader); |
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314 memset(pbmBits,0xff,destlength); |
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315 |
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316 long col = 0; |
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317 char* pixadd = 0; |
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318 |
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319 switch(aBpp) |
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320 { |
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321 case 1: |
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322 { |
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323 for(long ycrd=0;ycrd<iBmpHeader.biHeight;ycrd++) |
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324 for(long xcrd=0;xcrd<iBmpHeader.biWidth;xcrd++) |
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325 { |
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326 TRgb color=GetBmpPixel(xcrd,ycrd); |
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327 col=color.Gray2(); |
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328 pixadd=&(pbmBits[ycrd*bytewidth+(xcrd>>3)]); |
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329 (*pixadd)&=~(1<<((xcrd&7))); |
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330 (*pixadd)|=(unsigned char)(col<<(xcrd&7)); |
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331 } |
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332 } |
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333 break; |
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334 case 2: |
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335 { |
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336 for(long ycrd=0;ycrd<iBmpHeader.biHeight;ycrd++) |
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337 for(long xcrd=0;xcrd<iBmpHeader.biWidth;xcrd++) |
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338 { |
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339 TRgb color=GetBmpPixel(xcrd,ycrd); |
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340 col=color.Gray4(); |
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341 pixadd=&(pbmBits[ycrd*bytewidth+(xcrd>>2)]); |
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342 (*pixadd)&=~(0x3<<(2*(xcrd%4))); |
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343 (*pixadd)|=(unsigned char)(col<<(2*(xcrd%4))); |
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344 } |
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345 } |
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346 break; |
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347 case 4: |
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348 { |
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349 for(long ycrd=0;ycrd<iBmpHeader.biHeight;ycrd++) |
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350 for(long xcrd=0;xcrd<iBmpHeader.biWidth;xcrd++) |
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351 { |
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352 TRgb color=GetBmpPixel(xcrd,ycrd); |
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353 if (aColor == EMonochromeBitmap) |
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354 col = color.Gray16(); |
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355 else |
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356 col = color.Color16(); |
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357 pixadd=&(pbmBits[ycrd*bytewidth+(xcrd>>1)]); |
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358 if (xcrd%2!=0) |
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359 *pixadd=(unsigned char)((unsigned char)((col<<4)|(*pixadd&0x0f))); |
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360 else |
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361 *pixadd=(unsigned char)((unsigned char)(col|(*pixadd&0xf0))); |
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362 } |
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363 } |
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364 break; |
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365 case 8: |
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366 { |
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367 for(long ycrd=0;ycrd<iBmpHeader.biHeight;ycrd++) |
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368 for(long xcrd=0;xcrd<iBmpHeader.biWidth;xcrd++) |
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369 { |
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370 TRgb color=GetBmpPixel(xcrd,ycrd); |
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371 if (aColor == EMonochromeBitmap) |
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372 col = color.Gray256(); |
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373 else |
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374 col = color.Color256(); |
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375 pixadd=&(pbmBits[ycrd*((iBmpHeader.biWidth+3)&~3)+xcrd]); |
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376 *pixadd=(unsigned char)col; |
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377 } |
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378 } |
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379 break; |
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380 case 12: |
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381 { |
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382 for(long ycrd=0;ycrd<iBmpHeader.biHeight;ycrd++) |
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383 for(long xcrd=0;xcrd<iBmpHeader.biWidth;xcrd++) |
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384 { |
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385 TRgb color=GetBmpPixel(xcrd,ycrd); |
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386 col=color.Color4K(); |
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387 pixadd=&(pbmBits[ycrd*bytewidth+(xcrd<<1)]); |
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388 unsigned short* wordadd=(unsigned short*)pixadd; |
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389 *wordadd=(unsigned short)col; |
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390 } |
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391 } |
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392 break; |
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393 case 16: |
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394 { |
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395 for(long ycrd=0;ycrd<iBmpHeader.biHeight;ycrd++) |
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396 for(long xcrd=0;xcrd<iBmpHeader.biWidth;xcrd++) |
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397 { |
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398 TRgb color=GetBmpPixel(xcrd,ycrd); |
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399 col=color.Color64K(); |
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400 pixadd=&(pbmBits[ycrd*bytewidth+(xcrd<<1)]); |
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401 unsigned short* wordadd=(unsigned short*)pixadd; |
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402 *wordadd=(unsigned short)col; |
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403 } |
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404 } |
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405 break; |
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406 case 24: |
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407 { |
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408 for(long ycrd=0;ycrd<iBmpHeader.biHeight;ycrd++) |
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409 { |
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410 unsigned char* bytePtr = (unsigned char*)&pbmBits[ycrd*bytewidth]; |
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411 for(long xcrd=0;xcrd<iBmpHeader.biWidth;xcrd++) |
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412 { |
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413 TRgb col = GetBmpPixel(xcrd,ycrd); |
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414 *bytePtr++ = (unsigned char) col.iBlue; |
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415 *bytePtr++ = (unsigned char) col.iGreen; |
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416 *bytePtr++ = (unsigned char) col.iRed; |
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417 } |
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418 } |
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419 } |
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420 break; |
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421 case 32: |
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422 { |
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423 for(long ycrd=0;ycrd<iBmpHeader.biHeight;ycrd++) |
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424 { |
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425 unsigned char* bytePtr = (unsigned char*)&pbmBits[ycrd*bytewidth]; |
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426 for(long xcrd=0;xcrd<iBmpHeader.biWidth;xcrd++) |
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427 { |
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428 TRgb col = GetBmpPixel(xcrd,ycrd); |
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429 unsigned char alpha = useAlpha?GetAlphaPixel(xcrd,ycrd):(unsigned char)0; |
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430 *bytePtr++ = (unsigned char) col.iBlue; |
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431 *bytePtr++ = (unsigned char) col.iGreen; |
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432 *bytePtr++ = (unsigned char) col.iRed; |
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433 *bytePtr++ = alpha; |
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434 } |
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435 } |
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436 } |
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437 break; |
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438 }; |
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439 |
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440 return NoError; |
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441 } |
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442 |