CODEWITHSUNDEEP
androidandroid-ndknativeandroid-mediarecorderphone-call
Bharath Kumar
Bharath Kumar

Reputation: 544

Android Call Recording Incoming voice not getting recorded

I'm working auto call recorder app, I'm able to record voice call on below android 6 using MediaRecorder.AudioSource.VOICE_CALL, From android 6 not able to record voice call using VOICE_CALL. I managed to record using MediaRecorder.AudioSource.MIC but here incoming voice not getting recorded and I want to record voice call in normal mode not in speaker on mode. Please help me on this. (I had tried on Xiomi Redmi 4a(android 6),not working).

 myRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);
 myRecorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);
 myRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AAC);
 myRecorder.setMaxDuration(60 * 60 * 1000);
 AudioManager audiomanager =
 (AudioManager)getSystemService(AUDIO_SERVICE);
 audiomanager.setMode(2);

Edit : There is no issue with permissions.

Update : Anyone knows how to forcing another stream to MIC audio source. This requires native android code. Please help me on this Refer this question for more details on routing audio

Upvotes: 27

Views: 31199

Answers (6)

oldcode
oldcode

Reputation: 1711

First these 3 permissions are needed in Manifest as well as a runtime permission request if the device is above Marshmallow,

<uses-permission android:name="android.permission.READ_PHONE_STATE" />
<uses-permission android:name="android.permission.RECORD_AUDIO" />
<uses-permission android:name="android.permission.CAPTURE_AUDIO_OUTPUT" />
  1. MediaRecorder.AudioSource.VOICE_CALL is not supported on all phones so you need to continue using MediaRecorder.AudioSource.MIC.

I use this and works fine on most of the devices,

      recorder = new MediaRecorder();
      recorder.setAudioSource(audioSource);
      recorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
      recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
      recorder.setOutputFile(your_path);

  1. You need to set this to record your calls properly,

    audioManager.setMode(AudioManager.MODE_IN_CALL);

raise volume level when you start recording

audioManager.setStreamVolume(AudioManager.STREAM_VOICE_CALL,audioManager.getStreamMaxVolume(AudioManager.STREAM_VOICE_CALL), 0);

When you stop recording set the mode to normal, audioManager.setMode(AudioManager.MODE_NORMAL); and also set the stream volume to back how it was.

Upvotes: 2

pere plop
pere plop

Reputation: 51

In automatic call recorder (callU) have a option "SoundFX" If Enable Record Calls Two Side

Link

enter image description here

Upvotes: 1

Viktor Degtyarev
Viktor Degtyarev

Reputation: 166

You need to use ndk. Here are examples of the functions that need to be done.

Load libmedia.so and libutils.so

int load(JNIEnv *env, jobject thiz) {
    void *handleLibMedia;
    void *handleLibUtils;
    int result = -1;
    lspr func = NULL;

    pthread_t newthread = (pthread_t) thiz;

    handleLibMedia = dlopen("libmedia.so", RTLD_NOW | RTLD_GLOBAL);
    if (handleLibMedia != NULL) {
        func = dlsym(handleLibMedia, "_ZN7android11AudioSystem13setParametersEiRKNS_7String8E");
        if (func != NULL) {
            result = 0;
        }
        audioSetParameters = (lasp) func;
    } else {
        result = -1;
    }

    handleLibUtils = dlopen("libutils.so", RTLD_NOW | RTLD_GLOBAL);
    if (handleLibUtils != NULL) {
        fstr = dlsym(handleLibUtils, "_ZN7android7String8C2EPKc");
        if (fstr == NULL) {
            result = -1;
        }
    } else {
        result = -1;
    }

    cmd = CM_D;

    int resultTh = pthread_create(&newthread, NULL, taskAudioSetParam, NULL);

    return result;}

Function setParameters

int setParam(jint i, jint as) {
pthread_mutex_lock(&mt);

audioSession = (int) (as + 1);

kvp = "input_source=4";
kvps = toString8(kvp);

cmd = (int) i;

pthread_cond_signal(&cnd);
pthread_mutex_unlock(&mt);

return 0;}

Task AudioSetParameters

void *taskAudioSetParam(void *threadid) {
    while (1) {
        pthread_mutex_lock(&mt);
        if (cmd == CM_D) {
            pthread_cond_wait(&cnd, &mt);
        } else if (audioSetParameters != NULL) {
             audioSetParameters(audioSession, kvps);
        }
        pthread_mutex_unlock(&mt);
    }
}

There is a library and an example of use https://github.com/ViktorDegtyarev/CallRecLib

Upvotes: 11

user8256287
user8256287

Reputation: 177

try 

 MediaRecorder.AudioSource.VOICE_COMMUNICATION

and see

https://androidforums.com/threads/android-phone-with-call-recording-function.181663/

Upvotes: 0

nhoxbypass
nhoxbypass

Reputation: 10162

Xiaomi devices always have problems with permission request even run-time or install-time.

I have an Xiaomi Redmi 3 pro, and it always force to Deny some permission when I install apps, so I must manually Allow it. If your problem is the same, I found some workaround solution and it worked for me: How to get MIUI Security app auto start permission programmatically?

Upvotes: 4

Mukesh Sharma
Mukesh Sharma

Reputation: 31

This could be a Permission related issue.

With the introduction of Android 6.0 Marshmallow, the app will not be granted any permission at installation time. Instead, the application has to ask the user for a permission one-by-one at run-time.

I hope you have included the code which explicitly asks for permissions on devices with Marshmallow and above.

Upvotes: 1

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