autojs噪音测试

"ui";
/*
 * @version: 1.0
 * @Date: 2022-02-23 17:34:13
 * @LastEditTime: 2022-02-23 18:35:14
 * @LastEditors: 牙叔
 * @Description:
 * @FilePath: \autojs获取音量分贝\main.js
 * @名人名言: 牙叔教程 简单易懂
 * @bilibili: 牙叔教程
 * @公众号: 牙叔教程
 * @QQ群: 747748653
 */
engines.all().map((ScriptEngine) => {
  if (engines.myEngine().toString() !== ScriptEngine.toString()) {
    ScriptEngine.forceStop();
  }
});
importClass(android.media.AudioFormat);
importClass(android.media.AudioRecord);
importClass(android.media.MediaRecorder);
importClass(android.util.Log);
importClass(android.content.pm.PackageManager);
ui.layout(
  <vertical>
    <text text="噪音测试" margin="10" textSize="60sp" gravity="center" textStyle="bold"></text>
    <text id="author" textSize="22sp" marginBottom="6" textColor="#fbfbfe" bg="#00afff" w="*" gravity="center">
      牙叔教程
    </text>
    <horizontal w="*" gravity="center">
      <text id="value" w="0" layout_weight="3" text="Hello World" textSize="39sp" gravity="center" />
      <text text="db" w="0" layout_weight="1" textSize="39sp" gravity="left" />
    </horizontal>
  </vertical>
);
if (checkPermission("android.permission.RECORD_AUDIO")) {
  log("有录音权限");
  main();
} else {
  log("没有录音权限");
  runtime.requestPermissions(["record_audio"]);
}
/* -------------------------------------------------------------------------- */
function checkPermission(permission) {
  pm = context.getPackageManager();
  return (havePermission =
    PackageManager.PERMISSION_GRANTED == pm.checkPermission(permission, context.getPackageName().toString()));
}
function main() {
  getNoiseLevel();
}
function getNoiseLevel() {
  let SAMPLE_RATE_IN_HZ = 8000;
  let BUFFER_SIZE = AudioRecord.getMinBufferSize(
    SAMPLE_RATE_IN_HZ,
    AudioFormat.CHANNEL_IN_DEFAULT,
    AudioFormat.ENCODING_PCM_16BIT
  );
  let mAudioRecord;
  let isGetVoiceRun;
  if (isGetVoiceRun) {
    log("还在录着呢");
    return;
  }
  mAudioRecord = new AudioRecord(
    MediaRecorder.AudioSource.MIC,
    SAMPLE_RATE_IN_HZ,
    AudioFormat.CHANNEL_IN_DEFAULT,
    AudioFormat.ENCODING_PCM_16BIT,
    BUFFER_SIZE
  );
  if (mAudioRecord == null) {
    log("sound", "mAudioRecord初始化失败");
  }
  isGetVoiceRun = true;
  setTimeout(() => {
    isGetVoiceRun = false;
  }, 5000);
  threads.start(function () {
    mAudioRecord.startRecording();
    let buffer = util.java.array(java.lang.Short.TYPE, BUFFER_SIZE);
    while (isGetVoiceRun) {
      //r是实际读取的数据长度，一般而言r会小于buffersize
      let r = mAudioRecord.read(buffer, 0, BUFFER_SIZE);
      let v = 0;
      // 将 buffer 内容取出，进行平方和运算
      for (let i = 0; i < buffer.length; i++) {
        v += buffer[i] * buffer[i];
      }
      // 平方和除以数据总长度，得到音量大小。
      let mean = v / r;
      let volume = 10 * Math.log10(mean);
      log("分贝值:" + volume);
      ui.post(() => {
        ui.value.setText(volume.toFixed(2));
      });
      // 大概一秒十次
      sleep(100);
    }
    mAudioRecord.stop();
    mAudioRecord.release();
    mAudioRecord = null;
  });
}