ztwcom/speaker/index.js

优化

let speak = window.speechSynthesis;
let message = new window.SpeechSynthesisUtterance();
let msgArr = []
let idx = 0
//指定本地语言包服务为true的语言包
message.voice = speak.getVoices().filter(function (voice) { return voice.localService == true && voice.lang == "zh-CN"; })[0];;

//正在播报的报警数据
let speakingDataMap = new Map();

function speakMsg (newSpeakDataMap, interval = 2000) {
  msgArr = []
  //更新正在播报数据
  if (speakingDataMap.size > 0) {
    speakingDataMap.forEach(function (value, key, map) {
      if (newSpeakDataMap.get(key) == null) {
        //报警已经结束，移除此条报警信息
        speakingDataMap.delete(key);
      } else {
        //更新相应报警信息
        speakingDataMap.set(key, newSpeakDataMap.get(key));
        newSpeakDataMap.delete(key);
      }
    });
  }

  //将新增报警添加到播报数据
  if (newSpeakDataMap.size > 0) {
    newSpeakDataMap.forEach(function (value, key, map) {
      speakingDataMap.set(key, value);
    })
  }
  for (const key in newSpeakDataMap) {
    if (Object.prototype.hasOwnProperty.call(newSpeakDataMap, key)) {
      const element = newSpeakDataMap[key];
      // console.log(element, 'element')
      msgArr.push(element)
    }
  }
  repeat(msgArr, interval)
}
function arabicToChinese (str) {
  const numMap = ['零', '一', '二', '三', '四', '五', '六', '七', '八', '九'];
  return str.split('').map(char => numMap[parseInt(char)]).join('');
}
function repeat (msgArr, interval) {
  console.log(idx, msgArr[idx], '---')
  message.text = msgArr[idx];
  speak.speak(message)
  message.onend = () => {
    // return new Promise((resolve, reject) => {
    //   resolve(message, idx, msgArr)
    window.setTimeout(() => {
      if (idx == (msgArr.length - 1)) {
        // 最后一条
        idx = 0
        repeat(msgArr, interval)
      } else {
        // 中间条数
        idx++
        repeat(msgArr, interval)
      }
    }, interval)
    // })
  }
}
// 暂停
function pause () {
  speak.pause()
}
// 恢复暂停
function resume () {
  speak.resume()
}
// 清空
function cancel () {
  message.onend = null;
  speak.cancel();
}

function test (text) {
  //let message = new window.SpeechSynthesisUtterance(text);
  //message.voice = window.speechSynthesis.getVoices().filter(function(voice) { return voice.localService == true && voice.lang == "zh-CN"; })[0];
  //message.voice = speak.getVoices().filter(function(voice) { return voice.localService == true && voice.lang == "zh-CN"; })[0];
  /*message.volume = 100;  // 声音的音量
  message.rate = 1;// 语速，数值，默认值是1，范围是0.1到10
  message.pitch = 1.5; // 表示说话的音高，数值，范围从0（最小）到2（最大）。默认值为1
  message.lang = 'zh-CN'*/
  message.text = text;
  speak.speak(message);
  //speak.speak(message);
  /*for(let i = voices.length-1; i >= 0 ; i--) {
      message.voice = voices[i];
      message.text = text;
      speak.speak(message);
 
  }*/


}

export { speakMsg, cancel, pause, resume };