/* getint reads 4 bytes from file and returns it */
int getint(FILE *file) {
	int returnval = 0;
	returnval += getc(file);
	returnval += getc(file)*0x100;
	returnval += getc(file)*0x10000;
	returnval += getc(file)*0x1000000;	
	
	return returnval;
}

int getword(FILE *file) {
	int returnval = 0;
	returnval += getc(file);
	returnval += getc(file)*0x100;
	
	return returnval;
}

/* writeword writes word to file */
void writeword(FILE *tga, short word) {
	char tmp[2];
	tmp[0] = word;
	word = word >>8;
	tmp[1] = word;
	putc(tmp[0], tga);
	putc(tmp[1], tga);
}


int skipheader(FILE *rw) {
	int sectionsize;
	fseek(rw, 0x4, SEEK_CUR);
	sectionsize = getint(rw);
	fseek(rw, 0x4, SEEK_CUR);
	return sectionsize;
}


short readnibble(FILE *txd, unsigned char byte) {
	unsigned char first, sec;
	first = byte >> 4;
	sec = byte << 4;
	sec >>= 4;
	return sec + (first << 8);

	
}