Bluetooth-LE-Audio-Auracast-Transmitter/node_modules/@serialport/parser-spacepacket/dist/utils.js

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.convertHeaderBufferToObj = exports.HEADER_LENGTH = void 0;
exports.HEADER_LENGTH = 6;
/**
 * For numbers less than 255, will ensure that their string representation is at least 8 characters long.
 */
const toOctetStr = (num) => {
    let str = Number(num).toString(2);
    while (str.length < 8) {
        str = `0${str}`;
    }
    return str;
};
/**
 * Converts a Buffer of any length to an Object representation of a Space Packet header, provided
 * the received data is in the correct format.
 * @param buf - The buffer containing the Space Packet Header Data
 */
const convertHeaderBufferToObj = (buf) => {
    const headerStr = Array.from(buf.slice(0, exports.HEADER_LENGTH)).reduce((accum, curr) => `${accum}${toOctetStr(curr)}`, '');
    const isVersion1 = headerStr.slice(0, 3) === '000';
    const versionNumber = isVersion1 ? 1 : 'UNKNOWN_VERSION';
    const type = Number(headerStr[3]);
    const secondaryHeader = Number(headerStr[4]);
    const apid = parseInt(headerStr.slice(5, 16), 2);
    const sequenceFlags = parseInt(headerStr.slice(16, 18), 2);
    const packetName = parseInt(headerStr.slice(18, 32), 2);
    const dataLength = parseInt(headerStr.slice(-16), 2) + 1;
    return {
        versionNumber,
        identification: {
            apid,
            secondaryHeader,
            type,
        },
        sequenceControl: {
            packetName,
            sequenceFlags,
        },
        dataLength,
    };
};
exports.convertHeaderBufferToObj = convertHeaderBufferToObj;