ALAC_PREAMBLE     132 libavformat/cafdec.c         avio_read(pb, preamble, ALAC_PREAMBLE);
ALAC_PREAMBLE     142 libavformat/cafdec.c             if (size < ALAC_PREAMBLE + ALAC_HEADER) {
ALAC_PREAMBLE     148 libavformat/cafdec.c             avio_skip(pb, size - ALAC_PREAMBLE - ALAC_HEADER);