Eric Wieser
/
Bitmap_copy_copy
A Bitmap library created a while back. Probably still works...
BitmapFile.cpp@0:ded454e83f81, 2010-09-08 (annotated)
- Committer:
- EricWieser
- Date:
- Wed Sep 08 18:18:42 2010 +0000
- Revision:
- 0:ded454e83f81
Uploaded through the new system
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
EricWieser | 0:ded454e83f81 | 1 | #include "BitmapFile.h" |
EricWieser | 0:ded454e83f81 | 2 | |
EricWieser | 0:ded454e83f81 | 3 | |
EricWieser | 0:ded454e83f81 | 4 | BitmapFile::BitmapFile(char* fname) : m_pFile(NULL) |
EricWieser | 0:ded454e83f81 | 5 | { |
EricWieser | 0:ded454e83f81 | 6 | m_fileName = fname; |
EricWieser | 0:ded454e83f81 | 7 | Initialize(); |
EricWieser | 0:ded454e83f81 | 8 | } |
EricWieser | 0:ded454e83f81 | 9 | |
EricWieser | 0:ded454e83f81 | 10 | BitmapFile::~BitmapFile() |
EricWieser | 0:ded454e83f81 | 11 | { |
EricWieser | 0:ded454e83f81 | 12 | delete[] m_fileName; |
EricWieser | 0:ded454e83f81 | 13 | } |
EricWieser | 0:ded454e83f81 | 14 | |
EricWieser | 0:ded454e83f81 | 15 | bool BitmapFile::Initialize() |
EricWieser | 0:ded454e83f81 | 16 | { |
EricWieser | 0:ded454e83f81 | 17 | bool success = true; |
EricWieser | 0:ded454e83f81 | 18 | open(); |
EricWieser | 0:ded454e83f81 | 19 | fread(&BMPHeader,sizeof(BMPHeader),1,m_pFile); |
EricWieser | 0:ded454e83f81 | 20 | success = (BMPHeader.b == 'B' && BMPHeader.m == 'M'); |
EricWieser | 0:ded454e83f81 | 21 | |
EricWieser | 0:ded454e83f81 | 22 | fread(&m_headerlength,sizeof(m_headerlength),1,m_pFile); |
EricWieser | 0:ded454e83f81 | 23 | fread(&DIBHeader,m_headerlength,1,m_pFile); |
EricWieser | 0:ded454e83f81 | 24 | |
EricWieser | 0:ded454e83f81 | 25 | /*Debugging code |
EricWieser | 0:ded454e83f81 | 26 | |
EricWieser | 0:ded454e83f81 | 27 | Serial pc2(USBTX,USBRX); |
EricWieser | 0:ded454e83f81 | 28 | |
EricWieser | 0:ded454e83f81 | 29 | pc2.printf("\n\rFile = %s", m_fileName); |
EricWieser | 0:ded454e83f81 | 30 | |
EricWieser | 0:ded454e83f81 | 31 | pc2.printf("\n\rBMPHeader - Size = %d:\n\r",sizeof(BMPHeader)); |
EricWieser | 0:ded454e83f81 | 32 | pc2.printf("\tbm:\t\t%c%c\n\r",BMPHeader.b,BMPHeader.m); |
EricWieser | 0:ded454e83f81 | 33 | pc2.printf("\tfilesize:\t%d\n\r",BMPHeader.filesize); |
EricWieser | 0:ded454e83f81 | 34 | pc2.printf("\treserved:\t%d,%d\n\r",BMPHeader.reserved1,BMPHeader.reserved2); |
EricWieser | 0:ded454e83f81 | 35 | pc2.printf("\toffset:\t\t%d\n\r",BMPHeader.offset); |
EricWieser | 0:ded454e83f81 | 36 | |
EricWieser | 0:ded454e83f81 | 37 | pc2.printf("\n\rDIBHeader - Size = %d:\n\r",sizeof(DIBHeader)); |
EricWieser | 0:ded454e83f81 | 38 | pc2.printf("\theaderLength:\t%d\n\r",DIBHeader.headerLength); |
EricWieser | 0:ded454e83f81 | 39 | pc2.printf("\theight:\t\t\t%d\n\r",DIBHeader.height); |
EricWieser | 0:ded454e83f81 | 40 | pc2.printf("\twidth:\t\t%d\n\r",DIBHeader.width); |
EricWieser | 0:ded454e83f81 | 41 | pc2.printf("\tcplanes:\t\t%d\n\r",DIBHeader.cplanes); |
EricWieser | 0:ded454e83f81 | 42 | pc2.printf("\tcolordepth:\t\t%d\n\r",DIBHeader.colordepth); |
EricWieser | 0:ded454e83f81 | 43 | pc2.printf("\tcompression:\t%d\n\r",DIBHeader.compression); |
EricWieser | 0:ded454e83f81 | 44 | pc2.printf("\tdatasize:\t\t%d\n\r",DIBHeader.datasize); |
EricWieser | 0:ded454e83f81 | 45 | pc2.printf("\tvres:\t\t%d\n\r",DIBHeader.vres); |
EricWieser | 0:ded454e83f81 | 46 | pc2.printf("\thres:\t\t%d\n\r",DIBHeader.hres); |
EricWieser | 0:ded454e83f81 | 47 | |
EricWieser | 0:ded454e83f81 | 48 | |
EricWieser | 0:ded454e83f81 | 49 | */ |
EricWieser | 0:ded454e83f81 | 50 | |
EricWieser | 0:ded454e83f81 | 51 | m_rowsize = 4*((getColorDepth()*getWidth()+31)/32); |
EricWieser | 0:ded454e83f81 | 52 | |
EricWieser | 0:ded454e83f81 | 53 | close(); |
EricWieser | 0:ded454e83f81 | 54 | return success; |
EricWieser | 0:ded454e83f81 | 55 | } |
EricWieser | 0:ded454e83f81 | 56 | |
EricWieser | 0:ded454e83f81 | 57 | void BitmapFile::open() |
EricWieser | 0:ded454e83f81 | 58 | { |
EricWieser | 0:ded454e83f81 | 59 | if(m_pFile==NULL) |
EricWieser | 0:ded454e83f81 | 60 | { |
EricWieser | 0:ded454e83f81 | 61 | m_pFile = fopen(m_fileName, "r"); |
EricWieser | 0:ded454e83f81 | 62 | } |
EricWieser | 0:ded454e83f81 | 63 | } |
EricWieser | 0:ded454e83f81 | 64 | |
EricWieser | 0:ded454e83f81 | 65 | void BitmapFile::close() |
EricWieser | 0:ded454e83f81 | 66 | { |
EricWieser | 0:ded454e83f81 | 67 | if(m_pFile!=NULL) |
EricWieser | 0:ded454e83f81 | 68 | { |
EricWieser | 0:ded454e83f81 | 69 | fclose(m_pFile); |
EricWieser | 0:ded454e83f81 | 70 | m_pFile = NULL; |
EricWieser | 0:ded454e83f81 | 71 | } |
EricWieser | 0:ded454e83f81 | 72 | } |
EricWieser | 0:ded454e83f81 | 73 | |
EricWieser | 0:ded454e83f81 | 74 | /**********************************************************/ |
EricWieser | 0:ded454e83f81 | 75 | /*BMP Header Gets */ |
EricWieser | 0:ded454e83f81 | 76 | /**********************************************************/ |
EricWieser | 0:ded454e83f81 | 77 | |
EricWieser | 0:ded454e83f81 | 78 | int BitmapFile::getFileSize() |
EricWieser | 0:ded454e83f81 | 79 | { |
EricWieser | 0:ded454e83f81 | 80 | return BMPHeader.filesize; |
EricWieser | 0:ded454e83f81 | 81 | } |
EricWieser | 0:ded454e83f81 | 82 | |
EricWieser | 0:ded454e83f81 | 83 | int BitmapFile::getReserved1() |
EricWieser | 0:ded454e83f81 | 84 | { |
EricWieser | 0:ded454e83f81 | 85 | return BMPHeader.reserved1; |
EricWieser | 0:ded454e83f81 | 86 | } |
EricWieser | 0:ded454e83f81 | 87 | |
EricWieser | 0:ded454e83f81 | 88 | int BitmapFile::getReserved2() |
EricWieser | 0:ded454e83f81 | 89 | { |
EricWieser | 0:ded454e83f81 | 90 | return BMPHeader.reserved2; |
EricWieser | 0:ded454e83f81 | 91 | } |
EricWieser | 0:ded454e83f81 | 92 | |
EricWieser | 0:ded454e83f81 | 93 | int BitmapFile::getOffset() |
EricWieser | 0:ded454e83f81 | 94 | { |
EricWieser | 0:ded454e83f81 | 95 | return BMPHeader.offset; |
EricWieser | 0:ded454e83f81 | 96 | } |
EricWieser | 0:ded454e83f81 | 97 | |
EricWieser | 0:ded454e83f81 | 98 | /**********************************************************/ |
EricWieser | 0:ded454e83f81 | 99 | /*DIB Header Gets */ |
EricWieser | 0:ded454e83f81 | 100 | /**********************************************************/ |
EricWieser | 0:ded454e83f81 | 101 | |
EricWieser | 0:ded454e83f81 | 102 | int BitmapFile::getHeaderType() |
EricWieser | 0:ded454e83f81 | 103 | { |
EricWieser | 0:ded454e83f81 | 104 | return m_headerlength; |
EricWieser | 0:ded454e83f81 | 105 | } |
EricWieser | 0:ded454e83f81 | 106 | |
EricWieser | 0:ded454e83f81 | 107 | int BitmapFile::getHeight() |
EricWieser | 0:ded454e83f81 | 108 | { |
EricWieser | 0:ded454e83f81 | 109 | return DIBHeader.height; |
EricWieser | 0:ded454e83f81 | 110 | } |
EricWieser | 0:ded454e83f81 | 111 | |
EricWieser | 0:ded454e83f81 | 112 | int BitmapFile::getWidth() |
EricWieser | 0:ded454e83f81 | 113 | { |
EricWieser | 0:ded454e83f81 | 114 | return DIBHeader.width; |
EricWieser | 0:ded454e83f81 | 115 | } |
EricWieser | 0:ded454e83f81 | 116 | |
EricWieser | 0:ded454e83f81 | 117 | int BitmapFile::getCPlanes() |
EricWieser | 0:ded454e83f81 | 118 | { |
EricWieser | 0:ded454e83f81 | 119 | return DIBHeader.cplanes; |
EricWieser | 0:ded454e83f81 | 120 | } |
EricWieser | 0:ded454e83f81 | 121 | |
EricWieser | 0:ded454e83f81 | 122 | int BitmapFile::getColorDepth() |
EricWieser | 0:ded454e83f81 | 123 | { |
EricWieser | 0:ded454e83f81 | 124 | return DIBHeader.colordepth; |
EricWieser | 0:ded454e83f81 | 125 | } |
EricWieser | 0:ded454e83f81 | 126 | |
EricWieser | 0:ded454e83f81 | 127 | int BitmapFile::getCompression() |
EricWieser | 0:ded454e83f81 | 128 | { |
EricWieser | 0:ded454e83f81 | 129 | return DIBHeader.compression; |
EricWieser | 0:ded454e83f81 | 130 | } |
EricWieser | 0:ded454e83f81 | 131 | |
EricWieser | 0:ded454e83f81 | 132 | int BitmapFile::getDataSize() |
EricWieser | 0:ded454e83f81 | 133 | { |
EricWieser | 0:ded454e83f81 | 134 | return DIBHeader.datasize; |
EricWieser | 0:ded454e83f81 | 135 | } |
EricWieser | 0:ded454e83f81 | 136 | |
EricWieser | 0:ded454e83f81 | 137 | int BitmapFile::getHRes() |
EricWieser | 0:ded454e83f81 | 138 | { |
EricWieser | 0:ded454e83f81 | 139 | return DIBHeader.hres; |
EricWieser | 0:ded454e83f81 | 140 | } |
EricWieser | 0:ded454e83f81 | 141 | |
EricWieser | 0:ded454e83f81 | 142 | int BitmapFile::getVRes() |
EricWieser | 0:ded454e83f81 | 143 | { |
EricWieser | 0:ded454e83f81 | 144 | return DIBHeader.vres; |
EricWieser | 0:ded454e83f81 | 145 | } |
EricWieser | 0:ded454e83f81 | 146 | |
EricWieser | 0:ded454e83f81 | 147 | int BitmapFile::getNumPaletteColors() |
EricWieser | 0:ded454e83f81 | 148 | { |
EricWieser | 0:ded454e83f81 | 149 | return DIBHeader.numpalettecolors; |
EricWieser | 0:ded454e83f81 | 150 | } |
EricWieser | 0:ded454e83f81 | 151 | |
EricWieser | 0:ded454e83f81 | 152 | int BitmapFile::getImportantColors() |
EricWieser | 0:ded454e83f81 | 153 | { |
EricWieser | 0:ded454e83f81 | 154 | return DIBHeader.importantcolors; |
EricWieser | 0:ded454e83f81 | 155 | } |
EricWieser | 0:ded454e83f81 | 156 | |
EricWieser | 0:ded454e83f81 | 157 | /**********************************************************/ |
EricWieser | 0:ded454e83f81 | 158 | /*Data Gets */ |
EricWieser | 0:ded454e83f81 | 159 | /**********************************************************/ |
EricWieser | 0:ded454e83f81 | 160 | |
EricWieser | 0:ded454e83f81 | 161 | int BitmapFile::getRowSize() |
EricWieser | 0:ded454e83f81 | 162 | { |
EricWieser | 0:ded454e83f81 | 163 | return m_rowsize; |
EricWieser | 0:ded454e83f81 | 164 | } |
EricWieser | 0:ded454e83f81 | 165 | |
EricWieser | 0:ded454e83f81 | 166 | int BitmapFile::getPixel(int row, int col, bool closefile) |
EricWieser | 0:ded454e83f81 | 167 | { |
EricWieser | 0:ded454e83f81 | 168 | int color = -1; |
EricWieser | 0:ded454e83f81 | 169 | if(row>=0 && row < getHeight() && col>=0 && col< getWidth()) |
EricWieser | 0:ded454e83f81 | 170 | { |
EricWieser | 0:ded454e83f81 | 171 | if(getColorDepth() == 24) |
EricWieser | 0:ded454e83f81 | 172 | { |
EricWieser | 0:ded454e83f81 | 173 | open(); |
EricWieser | 0:ded454e83f81 | 174 | color = 0; //make sure the last byte is 00 |
EricWieser | 0:ded454e83f81 | 175 | |
EricWieser | 0:ded454e83f81 | 176 | int index = getOffset(); |
EricWieser | 0:ded454e83f81 | 177 | index += col*3; |
EricWieser | 0:ded454e83f81 | 178 | index += row*4*ceil(getWidth()*3/4.0); |
EricWieser | 0:ded454e83f81 | 179 | fseek(m_pFile, index, SEEK_SET); |
EricWieser | 0:ded454e83f81 | 180 | |
EricWieser | 0:ded454e83f81 | 181 | fread (&color, 3,1,m_pFile); |
EricWieser | 0:ded454e83f81 | 182 | |
EricWieser | 0:ded454e83f81 | 183 | if(closefile) |
EricWieser | 0:ded454e83f81 | 184 | { |
EricWieser | 0:ded454e83f81 | 185 | close(); |
EricWieser | 0:ded454e83f81 | 186 | } |
EricWieser | 0:ded454e83f81 | 187 | } |
EricWieser | 0:ded454e83f81 | 188 | } |
EricWieser | 0:ded454e83f81 | 189 | return color; |
EricWieser | 0:ded454e83f81 | 190 | } |
EricWieser | 0:ded454e83f81 | 191 | |
EricWieser | 0:ded454e83f81 | 192 | int *BitmapFile::getRow(int row, bool closefile) |
EricWieser | 0:ded454e83f81 | 193 | { |
EricWieser | 0:ded454e83f81 | 194 | open(); |
EricWieser | 0:ded454e83f81 | 195 | int *colors = new int[getWidth()]; |
EricWieser | 0:ded454e83f81 | 196 | int index = getOffset() + m_rowsize*row; |
EricWieser | 0:ded454e83f81 | 197 | fseek(m_pFile, index, SEEK_SET); |
EricWieser | 0:ded454e83f81 | 198 | if(getColorDepth() == 24) |
EricWieser | 0:ded454e83f81 | 199 | { |
EricWieser | 0:ded454e83f81 | 200 | for(int i=0; i<getWidth(); i++) |
EricWieser | 0:ded454e83f81 | 201 | { |
EricWieser | 0:ded454e83f81 | 202 | fread(&colors[i],3,1,m_pFile); |
EricWieser | 0:ded454e83f81 | 203 | } |
EricWieser | 0:ded454e83f81 | 204 | } |
EricWieser | 0:ded454e83f81 | 205 | else if(getColorDepth() == 1) |
EricWieser | 0:ded454e83f81 | 206 | { |
EricWieser | 0:ded454e83f81 | 207 | char *temp = new char[m_rowsize]; |
EricWieser | 0:ded454e83f81 | 208 | for(int i=0; i<m_rowsize; i++) |
EricWieser | 0:ded454e83f81 | 209 | { |
EricWieser | 0:ded454e83f81 | 210 | fread(&temp[i],sizeof(char),1,m_pFile); |
EricWieser | 0:ded454e83f81 | 211 | } |
EricWieser | 0:ded454e83f81 | 212 | for(int i=0; i<getWidth(); i++) |
EricWieser | 0:ded454e83f81 | 213 | { |
EricWieser | 0:ded454e83f81 | 214 | int byte = i / 8; |
EricWieser | 0:ded454e83f81 | 215 | int bit = i % 8; |
EricWieser | 0:ded454e83f81 | 216 | colors[i] = ((temp[byte] << bit) & 0x80) ? 0xFFFFFF : 0x000000; |
EricWieser | 0:ded454e83f81 | 217 | } |
EricWieser | 0:ded454e83f81 | 218 | delete [] temp; |
EricWieser | 0:ded454e83f81 | 219 | } |
EricWieser | 0:ded454e83f81 | 220 | if(closefile) |
EricWieser | 0:ded454e83f81 | 221 | { |
EricWieser | 0:ded454e83f81 | 222 | close(); |
EricWieser | 0:ded454e83f81 | 223 | } |
EricWieser | 0:ded454e83f81 | 224 | return colors; |
EricWieser | 0:ded454e83f81 | 225 | } |
EricWieser | 0:ded454e83f81 | 226 | |
EricWieser | 0:ded454e83f81 | 227 | int *BitmapFile::getRowBW(int row, bool closefile) |
EricWieser | 0:ded454e83f81 | 228 | { |
EricWieser | 0:ded454e83f81 | 229 | open(); |
EricWieser | 0:ded454e83f81 | 230 | int *colors = new int[getWidth()]; |
EricWieser | 0:ded454e83f81 | 231 | int index = getOffset() + m_rowsize*row; |
EricWieser | 0:ded454e83f81 | 232 | fseek(m_pFile, index, SEEK_SET); |
EricWieser | 0:ded454e83f81 | 233 | if(getColorDepth() == 24) |
EricWieser | 0:ded454e83f81 | 234 | { |
EricWieser | 0:ded454e83f81 | 235 | for(int i=0; i<getWidth(); i++) |
EricWieser | 0:ded454e83f81 | 236 | { |
EricWieser | 0:ded454e83f81 | 237 | char temp[3]; |
EricWieser | 0:ded454e83f81 | 238 | fread(temp,sizeof(char),3,m_pFile); |
EricWieser | 0:ded454e83f81 | 239 | int average = (temp[0]+temp[1]+temp[2])/3; |
EricWieser | 0:ded454e83f81 | 240 | colors[i] = average>128 ? 0xFFFFFF : 0x000000; |
EricWieser | 0:ded454e83f81 | 241 | } |
EricWieser | 0:ded454e83f81 | 242 | } |
EricWieser | 0:ded454e83f81 | 243 | else if(getColorDepth() == 1) |
EricWieser | 0:ded454e83f81 | 244 | { |
EricWieser | 0:ded454e83f81 | 245 | delete [] colors; |
EricWieser | 0:ded454e83f81 | 246 | colors = getRow(row, closefile); |
EricWieser | 0:ded454e83f81 | 247 | } |
EricWieser | 0:ded454e83f81 | 248 | if(closefile) |
EricWieser | 0:ded454e83f81 | 249 | { |
EricWieser | 0:ded454e83f81 | 250 | close(); |
EricWieser | 0:ded454e83f81 | 251 | } |
EricWieser | 0:ded454e83f81 | 252 | return colors; |
EricWieser | 0:ded454e83f81 | 253 | } |
EricWieser | 0:ded454e83f81 | 254 | |
EricWieser | 0:ded454e83f81 | 255 | char *BitmapFile::getRowBitstream(int row, bool closefile) |
EricWieser | 0:ded454e83f81 | 256 | { |
EricWieser | 0:ded454e83f81 | 257 | open(); |
EricWieser | 0:ded454e83f81 | 258 | int bitsperrow = (getWidth()+7)/8; |
EricWieser | 0:ded454e83f81 | 259 | char *data = new char[bitsperrow]; |
EricWieser | 0:ded454e83f81 | 260 | for(int i = 0; i<bitsperrow; i++) |
EricWieser | 0:ded454e83f81 | 261 | { |
EricWieser | 0:ded454e83f81 | 262 | data[i] = 0; |
EricWieser | 0:ded454e83f81 | 263 | } |
EricWieser | 0:ded454e83f81 | 264 | int index = getOffset() + m_rowsize*row; |
EricWieser | 0:ded454e83f81 | 265 | fseek(m_pFile, index, SEEK_SET); |
EricWieser | 0:ded454e83f81 | 266 | |
EricWieser | 0:ded454e83f81 | 267 | if(getColorDepth() == 24) |
EricWieser | 0:ded454e83f81 | 268 | { |
EricWieser | 0:ded454e83f81 | 269 | for(int i=0; i<getWidth(); i++) |
EricWieser | 0:ded454e83f81 | 270 | { |
EricWieser | 0:ded454e83f81 | 271 | char temp[3]; |
EricWieser | 0:ded454e83f81 | 272 | fread(temp,sizeof(char),3,m_pFile); |
EricWieser | 0:ded454e83f81 | 273 | int average = (temp[0]+temp[1]+temp[2])/3; |
EricWieser | 0:ded454e83f81 | 274 | int val = average<128?0:1; |
EricWieser | 0:ded454e83f81 | 275 | data[i/8] |= (val*0x80) >> (i%8); |
EricWieser | 0:ded454e83f81 | 276 | } |
EricWieser | 0:ded454e83f81 | 277 | } |
EricWieser | 0:ded454e83f81 | 278 | else if(getColorDepth() == 1) |
EricWieser | 0:ded454e83f81 | 279 | { |
EricWieser | 0:ded454e83f81 | 280 | fread(data,sizeof(char),bitsperrow,m_pFile); |
EricWieser | 0:ded454e83f81 | 281 | } |
EricWieser | 0:ded454e83f81 | 282 | |
EricWieser | 0:ded454e83f81 | 283 | if(closefile) |
EricWieser | 0:ded454e83f81 | 284 | { |
EricWieser | 0:ded454e83f81 | 285 | close(); |
EricWieser | 0:ded454e83f81 | 286 | } |
EricWieser | 0:ded454e83f81 | 287 | return data; |
EricWieser | 0:ded454e83f81 | 288 | } |