check_vanc_parity_checksum 441 libavdevice/decklink_dec.cpp if (check_vanc_parity_checksum(buf, len, buf[len - 1]) < 0) { check_vanc_parity_checksum 449 libavdevice/decklink_dec.cpp if (check_vanc_parity_checksum(buf, len, buf[len - 1]) < 0) {