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bitmap.hpp
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bitmap.hpp
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#include "dibHeader.cpp"
#include "bmpHeader.cpp"
class bitmap{
/*
╔════════════════════════════════════════╗
║ .bmp format ║▓▒░
╠════════════════╦════════════╦══════════╣▓▒░
║ NAME ║ NEEDED ║ SIZE ║▓▒░
╠════════════════╬════════════╬══════════╣▓▒░
║ header ║ yes ║ 14 Bytes ║▓▒░
╠════════════════╬════════════╬══════════╣▓▒░
║ DIB ║ yes ║ varies ║▓▒░
╠════════════════╬════════════╬══════════╣▓▒░
║ Extra bit ║ no ║ 12-16 ║▓▒░
║ masks ║ ║ Bytes ║▓▒░
╠════════════════╬════════════╬══════════╣▓▒░
║ Color Table ║ Only>8bits ║ varies ║▓▒░
╠════════════════╬════════════╬══════════╣▓▒░
║ GAP 1 ║ no ║ varies ║▓▒░
╠════════════════╬════════════╬══════════╣▓▒░
║ Pixel Array ║ yes ║ varies ║▓▒░
╠════════════════╬════════════╬══════════╣▓▒░
║ GAP 2 ║ no ║ varies ║▓▒░
╠════════════════╬════════════╬══════════╣▓▒░
║ ICC color ║ no ║ varies ║▓▒░
║ GAP 1 ║ ║ ║▓▒░
╚════════════════╩════════════╩══════════╝▓▒░
▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒░
░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░
*/
private:
char* bytes;
///////////////////////////////////////////
// Header information
///////////////////////////////////////
bmpHeader header;
dibHeader dib;
std::string DIBHeaderType;
std::string fileName;
bool isGoodHeaderField(){
if
(
(header.firstLetter == 'B' && header.secondLetter =='M') ||
(header.firstLetter == 'B' && header.secondLetter =='A') ||
(header.firstLetter == 'C' && header.secondLetter =='I') ||
(header.firstLetter == 'C' && header.secondLetter =='P') ||
(header.firstLetter == 'I' && header.secondLetter =='C') ||
(header.firstLetter == 'P' && header.secondLetter =='T')
)
{
return true;
}
else{
return false;
}
}
void inline readHeader(std::ifstream& file){
file.read((char*)&header.firstLetter, sizeof(uint8_t));
file.read((char*)&header.secondLetter, sizeof(uint8_t));
if(!isGoodHeaderField()){
throw("Error corrupted .bmp file");
}
file.read((char*)&header.fileSize, sizeof(uint32_t));
file.read((char*)&header.reservedMem, sizeof(uint32_t));
file.read((char*)&header.offset, sizeof(uint32_t));
}
public:
bitmap(std::string fileName)
{
this->fileName = fileName;
std::ifstream file(fileName, std::ios::binary);
if(!file.is_open()){
throw("Error: could not find bmp file");
}
readHeader(file);
dib = dibHeader(file);
unsigned int byteSize = 3 * getWidth() * getheight();
bytes = new char[byteSize];
int currentPos = 14 + dib.getDibSize();
uint8_t trash = 0;
while(currentPos < header.offset + 2){
file.read((char*)&trash, sizeof(uint8_t));
currentPos++;
}
file.read(bytes, byteSize);
file.close();
}
int getWidth(){
return dib.getWidth();
}
int getheight(){
return dib.getHeight();
}
unsigned char* getBytes(){
return (unsigned char*)bytes;
}
};