Java AudioRecord.startRecording方法代码示例

import android.media.AudioRecord; //导入方法依赖的package包/类
private void startRecording(final String filename) {
    recorder = new AudioRecord(MediaRecorder.AudioSource.MIC,
            RECORDER_SAMPLERATE,
            RECORDER_CHANNELS,
            RECORDER_AUDIO_ENCODING,
            bufferSize);
    int i = recorder.getState();
    if (i==1)
        recorder.startRecording();

    isRecording = true;

    recordingThread = new Thread(new Runnable() {
        @Override
        public void run() {
            writeAudioDataToFile(filename);
        }
    }, "AudioRecorder Thread");

    recordingThread.start();
}
 

import android.media.AudioRecord; //导入方法依赖的package包/类
private void startRecording(){
    recorder = new AudioRecord(MediaRecorder.AudioSource.MIC,
            RECORDER_SAMPLERATE, RECORDER_CHANNELS,RECORDER_AUDIO_ENCODING, bufferSize);

    int i = recorder.getState();
    if(i==1)
        recorder.startRecording();

    isRecording = true;

    recordingThread = new Thread(new Runnable() {

        @Override
        public void run() {
            writeAudioDataToArrayList();
            reorganiseDataArray(flattenArray());
        }
    },"AudioRecorder Thread");

    recordingThread.start();
}
 

import android.media.AudioRecord; //导入方法依赖的package包/类
public void startListening() {
    synchronized (API_LOCK) {
        if (this.disabled) {
            return;
        }
        if (!isListening) {
            recorder = new AudioRecord(MediaRecorder.AudioSource.MIC,
                    RECORDER_SAMPLERATE, RECORDER_CHANNELS,
                    RECORDER_AUDIO_ENCODING, ELEMENTS_TO_RECORD * BYTES_PER_ELEMENT);
            recorder.startRecording();
            isListening = true;
            if (!isRecording) {
                isRecording = true;
                recordingThread = new Thread(new Runnable() {
                    public void run() {
                        detectHotword();
                    }
                }, "AudioRecorder Thread");
                recordingThread.start();
            }
        }
    }
}
 

import android.media.AudioRecord; //导入方法依赖的package包/类
/**
 * Create a new AudioDispatcher connected to the default microphone.
 * 
 * @param sampleRate
 *            The requested sample rate.
 * @param audioBufferSize
 *            The size of the audio buffer (in samples).
 * 
 * @param bufferOverlap
 *            The size of the overlap (in samples).
 * @return A new AudioDispatcher
 */
public static AudioDispatcher fromDefaultMicrophone(final int sampleRate,
		final int audioBufferSize, final int bufferOverlap) {
	int minAudioBufferSize = AudioRecord.getMinBufferSize(sampleRate,
			android.media.AudioFormat.CHANNEL_IN_MONO,
			android.media.AudioFormat.ENCODING_PCM_16BIT);
	int minAudioBufferSizeInSamples =  minAudioBufferSize/2;
	if(minAudioBufferSizeInSamples <= audioBufferSize ){
	AudioRecord audioInputStream = new AudioRecord(
			MediaRecorder.AudioSource.MIC, sampleRate,
			android.media.AudioFormat.CHANNEL_IN_MONO,
			android.media.AudioFormat.ENCODING_PCM_16BIT,
			audioBufferSize * 2);

	TarsosDSPAudioFormat format = new TarsosDSPAudioFormat(sampleRate, 16,1, true, false);
	
	TarsosDSPAudioInputStream audioStream = new AndroidAudioInputStream(audioInputStream, format);
	//start recording ! Opens the stream.
	audioInputStream.startRecording();
	return new AudioDispatcher(audioStream,audioBufferSize,bufferOverlap);
	}else{
		throw new IllegalArgumentException("Buffer size too small should be at least " + (minAudioBufferSize *2));
	}
}
 

import android.media.AudioRecord; //导入方法依赖的package包/类
@Override
public void run() {
    byte[] buffer = new byte[audioBufferSize];
    recorder = new AudioRecord(audioSource, sampleRate, channel, audioFormat, audioBufferSize);
    try {
        while (recorder.getState() != AudioRecord.STATE_INITIALIZED)
            Thread.sleep(100, 0);
    } catch (InterruptedException e) {
        recorder.release();
        return;
    }

    recorder.startRecording();
    for (; ; ) {
        int length = recorder.read(buffer, 0, buffer.length);
        if (length < 0)
            Log.e("Record", "error: " + Integer.toString(length));
        else {
            for (WebSocket ws : wss)
                ws.sendBinary(buffer);
        }
        if (Thread.interrupted()) {
            recorder.stop();
            return;
        }
    }
}
 

import android.media.AudioRecord; //导入方法依赖的package包/类
public void StartRecord() {
        Log.i(TAG,"开始录音");
        isRecording=true;

//生成PCM文件
        File file = audioFile;//new File(Environment.getExternalStorageDirectory().getAbsolutePath() + "/reverseme.pcm");
        Log.i(TAG,"生成文件");
//如果存在，就先删除再创建
        if (file.exists())
            file.delete();
        Log.i(TAG,"删除文件");
        try {
            file.createNewFile();
            Log.i(TAG,"创建文件");
        } catch (IOException e) {
            Log.i(TAG,"未能创建");
            throw new IllegalStateException("未能创建" + file.toString());
        }
        try {
//输出流
            OutputStream os = new FileOutputStream(file);
            BufferedOutputStream bos = new BufferedOutputStream(os);
            DataOutputStream dos = new DataOutputStream(bos);
            int bufferSize = AudioRecord.getMinBufferSize(frequency, channelConfiguration, audioEncoding);
            AudioRecord audioRecord = new AudioRecord(MediaRecorder.AudioSource.MIC, frequency, channelConfiguration, audioEncoding, bufferSize);
            byte[] buffer = new byte[bufferSize];
            audioRecord.startRecording();
            Log.i(TAG, "开始录音");
            isRecording = true;
            while (isRecording) {
                int bufferReadResult = audioRecord.read(buffer, 0, bufferSize);
                dos.write(buffer,0,bufferReadResult);
            }
            audioRecord.stop();
            dos.close();
        } catch (Throwable t) {
            Log.e(TAG, "录音失败");
        }
    }
 

import android.media.AudioRecord; //导入方法依赖的package包/类
public void startRecord() throws IOException {
        synchronized (REC_LOCK){
            isRecordStarted=true;
            MediaFormat audioFormat=mConfig.getAudioFormat();
            mAudioEncoder=MediaCodec.createEncoderByType(audioFormat.getString(MediaFormat.KEY_MIME));
            mAudioEncoder.configure(audioFormat,null,null,MediaCodec.CONFIGURE_FLAG_ENCODE);
            MediaFormat videoFormat=mConfig.getVideoFormat();
            mVideoEncoder=MediaCodec.createEncoderByType(videoFormat.getString(MediaFormat.KEY_MIME));
            //此处不能用mOutputSurface，会configure失败
            mVideoEncoder.configure(videoFormat,null,null,MediaCodec.CONFIGURE_FLAG_ENCODE);
            mEncodeSurface=mVideoEncoder.createInputSurface();

            mAudioEncoder.start();
            mVideoEncoder.start();
            mMuxer=new MediaMuxer(mOutputPath,MediaMuxer.OutputFormat.MUXER_OUTPUT_MPEG_4);
            mRecordBufferSize = AudioRecord.getMinBufferSize(mRecordSampleRate,
                    mRecordChannelConfig, mRecordAudioFormat)*2;
//        buffer=new byte[bufferSize];
            mAudioRecord=new AudioRecord(MediaRecorder.AudioSource.MIC,mRecordSampleRate,mRecordChannelConfig,
                    mRecordAudioFormat,mRecordBufferSize);

            mAudioThread=new Thread(new Runnable() {
                @Override
                public void run() {
                    mAudioRecord.startRecording();
                    while (!audioEncodeStep(isTryStopAudio)){};
                    mAudioRecord.stop();
                }
            });
            mAudioThread.start();
            isRecordAudioStarted=true;
        }
    }
 

import android.media.AudioRecord; //导入方法依赖的package包/类
public boolean startCapture(int audioSource, int sampleRateInHz, int channelConfig, int audioFormat) {
    if (mIsCaptureStarted) {
        Log.e(TAG, "Capture already started !");
        return false;
    }

    int minBufferSize = AudioRecord.getMinBufferSize(sampleRateInHz, channelConfig, audioFormat);
    if (minBufferSize == AudioRecord.ERROR_BAD_VALUE) {
        Log.e(TAG, "Invalid parameter !");
        return false;
    }

    mAudioRecord = new AudioRecord(audioSource, sampleRateInHz, channelConfig, audioFormat, minBufferSize * 4);
    if (mAudioRecord.getState() == AudioRecord.STATE_UNINITIALIZED) {
        Log.e(TAG, "AudioRecord initialize fail !");
        return false;
    }

    mAudioRecord.startRecording();

    mIsLoopExit = false;
    mCaptureThread = new Thread(new AudioCaptureRunnable());
    mCaptureThread.start();

    mIsCaptureStarted = true;

    Log.d(TAG, "Start audio capture success !");

    return true;
}
 

import android.media.AudioRecord; //导入方法依赖的package包/类
public void start(){
    if(!isStarted){
        stopFlag=false;

        mRecordBufferSize = AudioRecord.getMinBufferSize(mRecordSampleRate,
                mRecordChannelConfig, mRecordAudioFormat)*2;
        mRecord=new AudioRecord(MediaRecorder.AudioSource.MIC,mRecordSampleRate,mRecordChannelConfig,
                mRecordAudioFormat,mRecordBufferSize);
        mRecord.startRecording();
        try {
            MediaFormat format=convertAudioConfigToFormat(mConfig.mAudio);
            mAudioEncoder=MediaCodec.createEncoderByType(format.getString(MediaFormat.KEY_MIME));
            mAudioEncoder.configure(format,null,null,MediaCodec.CONFIGURE_FLAG_ENCODE);
            mAudioEncoder.start();
        } catch (IOException e) {
            e.printStackTrace();
        }
        Thread thread=new Thread(new Runnable() {
            @Override
            public void run() {
                while (!stopFlag&&!audioEncodeStep(false)){};
                audioEncodeStep(true);
                Log.e("wuwang","audio stop");
                if(isStarted){
                    mRecord.stop();
                    mRecord.release();
                    mRecord=null;
                }
                if(mAudioEncoder!=null){
                    mAudioEncoder.stop();
                    mAudioEncoder.release();
                    mAudioEncoder=null;
                }
                isStarted=false;
            }
        });
        thread.start();
        startTime=SystemClock.elapsedRealtimeNanos();
        isStarted=true;
    }
}
 

import android.media.AudioRecord; //导入方法依赖的package包/类
/**
   * 判断是是否有录音权限
   */
  public static boolean isCanUseAudio(Activity activity) {
/*      if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M){//6.0以上系统
          if (ContextCompat.checkSelfPermission(activity,Manifest.permission.RECORD_AUDIO)!= PackageManager.PERMISSION_GRANTED) {
              return false;
          }else{
              return true;
          }

      }else {//6.0以下系统*/
      // 音频获取源
      int audioSource = MediaRecorder.AudioSource.MIC;
      // 设置音频采样率，44100是目前的标准，但是某些设备仍然支持22050，16000，11025
      int sampleRateInHz = 44100;
      // 设置音频的录制的声道CHANNEL_IN_STEREO为双声道，CHANNEL_CONFIGURATION_MONO为单声道
      int channelConfig = AudioFormat.CHANNEL_IN_STEREO;
      // 音频数据格式:PCM 16位每个样本。保证设备支持。PCM 8位每个样本。不一定能得到设备支持。
      int audioFormat = AudioFormat.ENCODING_PCM_16BIT;
      // 缓冲区字节大小
      int bufferSizeInBytes;
      bufferSizeInBytes = AudioRecord.getMinBufferSize(sampleRateInHz,
              channelConfig, audioFormat);
      AudioRecord audioRecord = new AudioRecord(audioSource, sampleRateInHz,
              channelConfig, audioFormat, bufferSizeInBytes);
      //开始录制音频
      try {
          // 防止某些手机崩溃，例如联想
          audioRecord.startRecording();
      } catch (IllegalStateException e) {
          e.printStackTrace();
      }

      //根据开始录音判断是否有录音权限
      if (audioRecord.getRecordingState() != AudioRecord.RECORDSTATE_RECORDING) {
          // context.startActivity(new Intent(Settings.ACTION_MANAGE_APPLICATIONS_SETTINGS));
          return false;
      } else {
          audioRecord.stop();
          audioRecord.release();
          return true;
      }

      // }


  }
 

import android.media.AudioRecord; //导入方法依赖的package包/类
public boolean startCapture(int audioSource, int sampleRateInHz, int channelConfig, int audioFormat) {

        if (mIsCaptureStarted) {
            Log.e(TAG, "hujd Capture already started !");
            return false;
        }

        mMinBufferSize = AudioRecord.getMinBufferSize(sampleRateInHz, channelConfig, audioFormat);

        if (mMinBufferSize == AudioRecord.ERROR_BAD_VALUE) {
            Log.e(TAG, "hujd Invalid parameter !");
            return false;
        }

        Log.e(TAG, "hujd getMinBufferSize = " + mMinBufferSize + " bytes !");

        mAudioRecord = new AudioRecord(audioSource, sampleRateInHz, channelConfig, audioFormat, mMinBufferSize);

        if (mAudioRecord.getState() == AudioRecord.STATE_UNINITIALIZED) {
            Log.e(TAG, "hujd AudioRecord initialize fail !");
            return false;
        }

        mAudioRecord.startRecording();


        mIsLoopExit = false;
        mCaptureThread = new Thread(new AudioCaptureRunnable());

        mCaptureThread.start();

        mIsCaptureStarted = true;

        Log.e(TAG, "hujd Start audio capture success !");
        return true;

    }