报错：Lame is not defined，MPEGMode is not defined

[liluyao1998]

// utils/audioConverter.js
import lamejs from "lamejs";
// var lamejs = require("lamejs");

// 确保全局变量已定义
window.MPEGMode = {
STEREO: 0,
JOINT_STEREO: 1,
DUAL_CHANNEL: 2,
SINGLE_CHANNEL: 3,
};

export function wavToMp3(recorderData) {
console.log("lamejs", lamejs);
const channels = 1; // 单声道
const sampleRate = 16000; // 采样率
const kbps = 128; // 比特率

const mp3encoder = new lamejs.Mp3Encoder(channels, sampleRate, kbps);
const mp3Data = [];
const samples = new Int16Array(recorderData.buffer); // 从源中获取数据
const sampleBlockSize = 1152; // 576的倍数

for (let i = 0; i < samples.length; i += sampleBlockSize) {
const sampleChunk = samples.subarray(i, i + sampleBlockSize);
const mp3buf = mp3encoder.encodeBuffer(sampleChunk);
if (mp3buf.length > 0) {
mp3Data.push(mp3buf);
}
}

const mp3buf = mp3encoder.flush(); // 完成写入mp3
if (mp3buf.length > 0) {
mp3Data.push(new Int8Array(mp3buf));
}

const blob = new Blob(mp3Data, { type: "audio/mp3" });
return blob;
}