ALAC_PREAMBLE 133 libavformat/cafdec.c if (avio_read(pb, preamble, ALAC_PREAMBLE) != ALAC_PREAMBLE) { ALAC_PREAMBLE 146 libavformat/cafdec.c if (size < ALAC_PREAMBLE + ALAC_HEADER) { ALAC_PREAMBLE 156 libavformat/cafdec.c avio_skip(pb, size - ALAC_PREAMBLE - ALAC_HEADER);