static char *fourcc2str(unsigned int fourcc, char buf[4])
{
	buf[0] = (fourcc >>  0) & 0xFF;
	buf[1] = (fourcc >>  8) & 0xFF;
	buf[2] = (fourcc >> 16) & 0xFF;
	buf[3] = (fourcc >> 24) & 0xFF;

	return buf;
}