MediaRecorder - 记录通话应用程序 [英] MediaRecorder - record calls application

问题描述

我正在尝试开发记录通话的应用程序.

im trying to develope application that recording calls.

当我录制输出声音时听起来很有线 - 电子声音而不是其他人的声音.

when im recording the output sound sounds very wired - electronic sounds instead the other person voice.

这是我的代码:

public class MainActivity extends Activity implements OnClickListener {
private Boolean Recording;
private Button btn_REC;
private MediaRecorder mrec;
private File audiofile = null;
private static final String TAG = "SoundRecordingDemo";

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    setContentView(R.layout.main);
    Recording = false;
    mrec = new MediaRecorder();
    btn_REC = (Button) findViewById(R.id.btn_record);
    btn_REC.setOnClickListener(this);
}

@Override
public void onClick(View v)
{
    if (!Recording)
    {
        try
        {
            startRecording();
            Recording = true;
        }
        catch (IOException e1)
        {
            e1.printStackTrace();
        }

        btn_REC.setText("RECORDING");
    }


    else
    {       
        stopRecording();
        btn_REC.setText("RECORD");
    }


}

protected void startRecording() throws IOException {
    mrec.setAudioSource(MediaRecorder.AudioSource.VOICE_DOWNLINK);
    mrec.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
    mrec.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
    if (audiofile == null) {
        File sampleDir = Environment.getExternalStorageDirectory();
        try {
            audiofile = File.createTempFile("ibm", ".3gp", sampleDir);
        } catch (IOException e) {
            Log.e(TAG, "sdcard access error");
            return;
        }
    }
    mrec.setOutputFile(audiofile.getAbsolutePath());
    mrec.prepare();
    mrec.start();
}

protected void stopRecording() {
    mrec.stop();
    mrec.release();
    processaudiofile();
}

protected void processaudiofile() {
    ContentValues values = new ContentValues(3);
    long current = System.currentTimeMillis();
    values.put(MediaStore.Audio.Media.TITLE, "audio" + audiofile.getName());
    values.put(MediaStore.Audio.Media.DATE_ADDED, (int) (current / 1000));
    values.put(MediaStore.Audio.Media.MIME_TYPE, "audio/3gpp");
    values.put(MediaStore.Audio.Media.DATA, audiofile.getAbsolutePath());
    ContentResolver contentResolver = getContentResolver();

    Uri base = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
    Uri newUri = contentResolver.insert(base, values);

    sendBroadcast(new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE, newUri));
}

}

当我尝试将 AudioSource 更改为上行链路或语音呼叫时，它仍然相同.当我将其定义为 MIC 时一切正常，但是当我拨打电话时仍然出现这种奇怪的声音...

when im trying to change the AudioSource to uplink or voice call its still the same. when i define this to MIC all works just fine but when i make a call still this strange sound begin...

有什么想法吗?

谢谢！

推荐答案

Use mRecorder.setAudioSource(MediaRecorder.AudioSource.VOICE_CALL);

Use mRecorder.setAudioSource(MediaRecorder.AudioSource.VOICE_CALL);

但由于通话录音不合法，因此许多设备不支持 (MediaRecorder.AudioSource.VOICE_CALL/MediaRecorder.AudioSource.VOICE_DOWNLINK)，将​​在某些设备上工作.

But as,Call Recording is not legal so many device not support the (MediaRecorder.AudioSource.VOICE_CALL/MediaRecorder.AudioSource.VOICE_DOWNLINK), Will work on some Device.

我已经在 LG 上测试过它并且工作正常，但不适用于 Nexus 设备.

I have tested it on LG and working fine but not working with Nexus device.

因此，它们使用所有设备都允许的 MediaRecorder.AudioSource.MIC.

So Instead These use MediaRecorder.AudioSource.MIC which is allowed by all devices.

这篇关于MediaRecorder - 记录通话应用程序的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！