android.media.MediaRecorder.getMaxAmplitude()方法的使用及代码示例

x33g5p2x  于2022-01-24 转载在 其他  
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本文整理了Java中android.media.MediaRecorder.getMaxAmplitude()方法的一些代码示例，展示了MediaRecorder.getMaxAmplitude()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。MediaRecorder.getMaxAmplitude()方法的具体详情如下：
包路径：android.media.MediaRecorder
类名称：MediaRecorder
方法名：getMaxAmplitude

MediaRecorder.getMaxAmplitude介绍

暂无

代码示例

代码示例来源：origin: stackoverflow.com

int x = recorder.getMaxAmplitude();

代码示例来源：origin: stackoverflow.com

return mediaRecorder.getMaxAmplitude();

代码示例来源：origin: Piasy/RxAndroidAudio

public synchronized int getMaxAmplitude() {
  if (mState != STATE_RECORDING) {
    return 0;
  }
  return mRecorder.getMaxAmplitude();
}

代码示例来源：origin: stackoverflow.com

return  mRecorder.getMaxAmplitude();
else
    return 0;

代码示例来源：origin: q422013/IMChat

public double getAmplitude() {
  if (mRecorder != null)
    return (mRecorder.getMaxAmplitude() / 2700.0);
  else
    return 0;
}

代码示例来源：origin: newchenxf/audiorecord

/**
 * 获得录音的音量，范围 0-32767, 归一化到0 ~ 1
 * @return
 */
public float getMaxAmplitude() {
  if(recordStatus == RecordStatus.START) {
    return mediaRecorder.getMaxAmplitude() * 1.0f / 32768;
  }
  return 0;
}

代码示例来源：origin: cbchena/android_examples

public double getAmplitude() {
  if (_mRecorder != null)
    return (_mRecorder.getMaxAmplitude() / 2700.0);
  else
    return 0;
}

代码示例来源：origin: baiyuliang/QRobot

public double getAmplitude() {
    if (recorder != null) {
      return (recorder.getMaxAmplitude());
    } else
      return 0;
  }
}

代码示例来源：origin: cn.leancloud.android/avoscloud-push

/**
 * Returns the maximum absolute amplitude that was sampled since the last
 * call to this method. Call this only after the start().
 *
 * @return the maximum absolute amplitude measured since the last call, or
 * 0 when called for the first time
 * @throws IllegalStateException if it is called before
 * the audio source has been set.
 */
public int getMaxAmplitude() {
 if (null == recorder) {
  return 0;
 }
 return recorder.getMaxAmplitude();
}

代码示例来源：origin: easemob/kefu-android-demo

public int getVoiceLevel(@SuppressWarnings("SameParameterValue") int maxLevel) {
  if (isPrepared) {
    /*maxLevel:取值：1~7*/
    try {
      /**
       * mMediaRecorder.getMaxAmplitude();振幅 值范围:1~32767
       * mMediaRecorder.getMaxAmplitude()/32768 在0~1之间
       * 7*mMediaRecorder.getMaxAmplitude()/32768 在0~7之间,但最大只能取到6,所以加1
       */
      return maxLevel * mMediaRecorder.getMaxAmplitude() / 32768 + 1;
    } catch (Exception ignored) {
    }
  }
  return 1;
}

代码示例来源：origin: dongorigin/AndroidDemo

public int getVoiceLevel(int maxLevel) {
  if (isRecording) {
    try {
      // getMaxAmplitude 的范围为 0-32767
      return maxLevel * mMediaRecorder.getMaxAmplitude() / 32768 + 1;
    } catch (IllegalStateException e) {
      e.printStackTrace();
      return 1;
    }
  }
  return 1;
}

代码示例来源：origin: eliotstocker/Light-Controller

private int getInputVolume() {
    try {
      //mr.getMaxAmplitude();
      int amplitude = mr.getMaxAmplitude();
      fd.flush();
      return amplitude;
    } catch(Exception e) {
      e.printStackTrace();
    }
    return 0;
  }
}

代码示例来源：origin: UCodeUStory/RecordVoiceView

private void updateMicStatus() {
  if (mMediaRecorder != null) {
    // int vuSize = 10 * mMediaRecorder.getMaxAmplitude() / 32768;
    int ratio = mMediaRecorder.getMaxAmplitude() / BASE;
    int db = 0;// 分贝
    if (ratio > 1)
      db = (int) (20 * Math.log10(ratio));
    mHandler.postDelayed(mUpdateMicStatusTimer, SPACE);
    Message msg = Message.obtain();
    msg.arg1 = db;
    mHandler.sendMessage(msg);
  }
}

代码示例来源：origin: XiqingLiu/RecordView

private void updateMicStatus() {
  if (mMediaRecorder != null) {
    // int vuSize = 10 * mMediaRecorder.getMaxAmplitude() / 32768;
    int ratio = mMediaRecorder.getMaxAmplitude() / BASE;
    int db = 0;// 分贝
    if (ratio > 1)
      db = (int) (20 * Math.log10(ratio));
    mHandler.postDelayed(mUpdateMicStatusTimer, SPACE);
    Message msg = Message.obtain();
    msg.arg1 = db;
    mHandler.sendMessage(msg);
  }
}

代码示例来源：origin: YiChat/android_YiChat_Lite

@Override
  public void run() {
    try {
      while (isRecording) {
        android.os.Message msg = new android.os.Message();
        msg.what = recorder.getMaxAmplitude() * 13 / 0x7FFF;
        handler.sendMessage(msg);
        SystemClock.sleep(100);
      }
    } catch (Exception e) {
      // from the crash report website, found one NPE crash from
      // one android 4.0.4 htc phone
      // maybe handler is null for some reason
     }
  }
}).start();

代码示例来源：origin: Meiqia/MeiqiaSDK-Android

public int getVoiceLevel(int maxLevel) {
  if (mIsPrepared) {
    try {
      return Math.max(Math.min((int) (25 * Math.log10(mMediaRecorder.getMaxAmplitude() / 500)) / 4, maxLevel), 1);
      // 没有设置音频源之前获取声音振幅会报IllegalStateException，直接返回1
    } catch (Exception e) {
      e.printStackTrace();
    }
  }
  return 1;
}

代码示例来源：origin: jackuhan/Android_WaveLine

@Override
  public void handleMessage(Message msg) {
    super.handleMessage(msg);
    double ratio = (double) mMediaRecorder.getMaxAmplitude() / 100;
    double db = 0;// 分贝
    if (ratio > 1)
      db = 30 * Math.log10(ratio);
    voiceLineView.setVolume((int) (db));
  }
};

代码示例来源：origin: easemob/livestream_demo_android

@Override
  public void run() {
    try {
      while (isRecording) {
        android.os.Message msg = new android.os.Message();
        msg.what = recorder.getMaxAmplitude() * 13 / 0x7FFF;
        handler.sendMessage(msg);
        SystemClock.sleep(100);
      }
    } catch (Exception e) {
      // from the crash report website, found one NPE crash from
      // one android 4.0.4 htc phone
      // maybe handler is null for some reason
      EMLog.e("voice", e.toString());
    }
  }
}).start();

代码示例来源：origin: lzan13/EaseUICustomer

@Override
  public void run() {
    try {
      while (isRecording) {
        android.os.Message msg = new android.os.Message();
        msg.what = recorder.getMaxAmplitude() * 13 / 0x7FFF;
        handler.sendMessage(msg);
        SystemClock.sleep(100);
      }
    } catch (Exception e) {
      // from the crash report website, found one NPE crash from
      // one android 4.0.4 htc phone
      // maybe handler is null for some reason
      EMLog.e("voice", e.toString());
    }
  }
}).start();

代码示例来源：origin: stackoverflow.com

// Start recording but don't store data
MediaRecorder mediaRecorder = new MediaRecorder();
mediaRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);
mediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
mediaRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
mediaRecorder.setOutputFile("/dev/null");
mediaRecorder.prepare();
mediaRecorder.start();

// Obtain maximum amplitude since last call of getMaxAmplitude()
while(someCondition) {
  int amplitude = mediaRecorder.getMaxAmplitude();
}

// Don't forget to release
mediaRecorder.reset();
mediaRecorder.release();

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