securityos/node_modules/music-metadata/lib/asf/AsfUtil.js

39 lines
1.1 KiB
JavaScript
Raw Permalink Normal View History

2024-09-06 15:32:35 +00:00
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.AsfUtil = void 0;
const Token = require("token-types");
const util = require("../common/Util");
class AsfUtil {
static getParserForAttr(i) {
return AsfUtil.attributeParsers[i];
}
static parseUnicodeAttr(uint8Array) {
return util.stripNulls(util.decodeString(uint8Array, 'utf16le'));
}
static parseByteArrayAttr(buf) {
return Buffer.from(buf);
}
static parseBoolAttr(buf, offset = 0) {
return AsfUtil.parseWordAttr(buf, offset) === 1;
}
static parseDWordAttr(buf, offset = 0) {
return buf.readUInt32LE(offset);
}
static parseQWordAttr(buf, offset = 0) {
return Token.UINT64_LE.get(buf, offset);
}
static parseWordAttr(buf, offset = 0) {
return buf.readUInt16LE(offset);
}
}
AsfUtil.attributeParsers = [
AsfUtil.parseUnicodeAttr,
AsfUtil.parseByteArrayAttr,
AsfUtil.parseBoolAttr,
AsfUtil.parseDWordAttr,
AsfUtil.parseQWordAttr,
AsfUtil.parseWordAttr,
AsfUtil.parseByteArrayAttr
];
exports.AsfUtil = AsfUtil;