static int read_atom_header(unsigned char *buf, uint64_t *subsize, unsigned char type[5])
{
int i;
- uint64_t size = (buf[0] << 24) + (buf[1] << 16) + (buf[2] << 8) + buf[3];
+ uint64_t size = aac_read_int32(buf);
memcpy(type, buf + 4, 4);
type[4] = '\0';