C++ (Cpp) Load8BitBMP Examples

Example #1

File: IMAGE_LoadBMP.cpp Project: iag/MMOpenGLProject

//Open a BMP and find out what type it is
bool IMAGE::LoadBMP(char * filename)
{
	FILE * file;
	BITMAPFILEHEADER fileHeader;
	BITMAPINFOHEADER infoHeader;

	//Open file for reading
	file=fopen(filename, "rb");
	if(!file)
	{
		LOG::Instance()->OutputError("Unable to open %s", filename);
		return false;
	}

	//read the file header
	fread(&fileHeader, sizeof(BITMAPFILEHEADER), 1, file);

	//Check this is a bitmap
	if(fileHeader.bfType != bitmapID)
	{
		fclose(file);
		LOG::Instance()->OutputError("%s is not a legal .bmp", filename);
		return false;
	}

	//Read in the information header
	fread(&infoHeader, sizeof(BITMAPINFOHEADER), 1, file);

	//close the file
	fclose(file);

	//Find out the bpp and go to correct loading function
	if(infoHeader.biBitCount==8)
		return Load8BitBMP(filename);
	if(infoHeader.biBitCount==24)
		return Load24BitBMP(filename);

	LOG::Instance()->OutputError("%s has an unsupported bpp", filename);

	return false;
}

Example #2

File: image.cpp Project: Distrotech/mesa-demos

bool IMAGE::LoadBMP(char * filename)
{
	FILE * file;												//the texture file
	BITMAPFILEHEADER fileHeader;								//bitmap file header
	BITMAPINFOHEADER infoHeader;								//bitmap info header

	//open file for reading
	file=fopen(filename, "rb");
	if(file==NULL)
	{
		errorLog.OutputError("Unable to open %s", filename);
		return false;
	}

	//read the file header
	fread(&fileHeader, sizeof(BITMAPFILEHEADER), 1, file);

	//check it's a bitmap
	if(fileHeader.bfType != BITMAP_ID)
	{
		fclose(file);
		errorLog.OutputError("%s is not a legal .BMP", filename);
		return false;
	}

	//read in the information header
	fread(&infoHeader, sizeof(BITMAPINFOHEADER), 1, file);

	//close the file
	fclose(file);

	//discover the bpp
	if(infoHeader.biBitCount==24)
		return Load24BitBMP(filename);
	if(infoHeader.biBitCount==8)
		return Load8BitBMP(filename);

	errorLog.OutputError("%s has an unknown bpp", filename);
	return false;
}