The VideoLAN Forums

Posted: **10 Jul 2014 11:34**

Hello guys,

I git clone the latest vlc source code and apply the record patch (download from https://patches.videolan.org/patch/606/)

and add jni interface to LibVLC.java as below. but use android to call the method to record get nothing.

please help me to resolve this issue.

{

public native boolean takeSnapShot( int num, String file, int width, int height);

public native boolean videoRecordStart(String path);

public native boolean videoRecordStop();

public native boolean videoIsRecording();

public native boolean videoIsRecordable();

public native int getState();

public boolean takeSnapShot(String file, int width, int height) {
return takeSnapShot(0, file, width, height);
}

}

Posted: **10 Jul 2014 13:24**

Read up on how to use JNI.

You need to call the corresponding C functions in vlc-android/jni/libvlcjni.c as well. You can't just declare a native function without a corresponding C JNI function.

Posted: **10 Jul 2014 13:56**

Thank you.

But I already add C functions in libvlcjni.c as below . Comiple Success but nothing record.

Code: Select all

jboolean Java_org_videolan_libvlc_LibVLC_takeSnapShot(JNIEnv *env, jobject thiz,jint number, jstring path, jint width,jint height)  
{  
    jboolean isCopy;  
   libvlc_media_player_t *mp = getMediaPlayer(env, thiz);  
     /* Get C string */  
   const char* psz_path = (*env)->GetStringUTFChars(env, path, &isCopy);  
  
   if (mp)  
        if(libvlc_video_take_snapshot(mp, (int)number,psz_path , (int)width,(int)height)==0)  
            return JNI_TRUE;  
   return JNI_FALSE;  
  
}  
  
jboolean Java_org_videolan_libvlc_LibVLC_videoRecordStart(JNIEnv *env, jobject thiz,jstring path)  
{  
    jboolean isCopy;  
   libvlc_media_player_t *mp = getMediaPlayer(env, thiz);  
     /* Get C string */  
   const char* psz_path = (*env)->GetStringUTFChars(env, path, &isCopy);  
   //const char* psz_filename=(*env)->GetStringUTFChars(env, filename, &isCopy);  
   if (mp)  
        if(libvlc_media_player_record_start(mp,psz_path)==0)  
            return JNI_TRUE;  
   return JNI_FALSE;  
}  
  
jboolean Java_org_videolan_libvlc_LibVLC_videoRecordStop(JNIEnv *env, jobject thiz)  
{  
    jboolean isCopy;  
   libvlc_media_player_t *mp = getMediaPlayer(env, thiz);  
     /* Get C string */  
   if (mp)  
        if(libvlc_media_player_record_stop(mp)==0)  
            return JNI_TRUE;  
   return JNI_FALSE;  
}  
  
jboolean Java_org_videolan_libvlc_LibVLC_videoIsRecording(JNIEnv *env, jobject thiz)  
{  
    jboolean isCopy;  
   libvlc_media_player_t *mp = getMediaPlayer(env, thiz);  
   if (mp)  
        if(libvlc_media_player_is_recording(mp))  
            return JNI_TRUE;  
   return JNI_FALSE;  
}  
jboolean Java_org_videolan_libvlc_LibVLC_videoIsRecordable(JNIEnv *env, jobject thiz)  
{  
    jboolean isCopy;  
   libvlc_media_player_t *mp = getMediaPlayer(env, thiz);  
   if (mp)  
        if(libvlc_media_player_is_recordable(mp))  
            return JNI_TRUE;  
   return JNI_FALSE;  
}  
  
jint Java_org_videolan_libvlc_LibVLC_getState(JNIEnv *env, jobject thiz)  
{  
    libvlc_media_player_t *mp = getMediaPlayer(env, thiz);  
    if (mp){  
        libvlc_state_t state=libvlc_media_player_get_state(mp);  
        return (jint)state;  
    }  
    else  
        return -1;  
}

Posted: **10 Jul 2014 15:20**

Then read the logs.

Posted: **11 Jul 2014 05:05**

Thank u.

How can I read the logs?

Right now, I can record some streaming video.

But motion jpeg still not recorded.

Posted: **11 Jul 2014 05:14**

With logcat.

Posted: **11 Jul 2014 06:31**

but logcat not display any error message.

Posted: **11 Jul 2014 06:33**

http://www.receptorblog.com/wordpress/r ... -computer/

Posted: **14 Jul 2014 03:55**

http://www.receptorblog.com/wordpress/r ... -computer/

Thank you for your suggestion.

I use logcat (ADT Plugin) in Eclipse and double check the both log messages are the same.

only mjpeg demux:~

Please see the log file http://goo.gl/Pv9i6z

Posted: **14 Jul 2014 15:03**

They are incomplete.

Posted: **15 Jul 2014 03:22**

They are incomplete.

I upload the complete log.

thank you.

http://goo.gl/QukwRs

Posted: **15 Jul 2014 05:02**

Does it even play?

Posted: **15 Jul 2014 06:32**

Yes, it can play

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