@svta/common-media-library/dist/id3/util/decodeId3UrlFrame.js

A common library for media playback in JavaScript

import { utf8ArrayToStr } from '../../utils/utf8ArrayToStr.js';
/**
 * Decode a URL frame
 *
 * @param frame - the ID3 URL frame
 *
 * @returns The decoded ID3 URL frame
 *
 * @internal
 *
 * @group ID3
 */
export function decodeId3UrlFrame(frame) {
    if (frame.type === 'WXXX') {
        /*
        Format:
        [0]   = {Text Encoding}
        [1-?] = {Description}\0{URL}
        */
        if (frame.size < 2) {
            return undefined;
        }
        let index = 1;
        const description = utf8ArrayToStr(frame.data.subarray(index), true);
        index += description.length + 1;
        const value = utf8ArrayToStr(frame.data.subarray(index));
        return { key: frame.type, info: description, data: value };
    }
    /*
    Format:
    [0-?] = {URL}
    */
    const url = utf8ArrayToStr(frame.data);
    return { key: frame.type, info: '', data: url };
}
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