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John Weland
42,478 PointsRTP Stream works on pre-M devices, but not M?
So I've got an odd problem. I have been working on an RTP stream function for a while following this bit of open code.
On all the devices I’ve tried it on the pre-m (Android 6.0) devices it works perfectly. However on devices running M I don’t get any errors but I also don’t get any sound.
When I run the following the request for permissions works perfectly on both M and pre-M devices.
package com.example.androidmpermissions;
import android.Manifest;
import android.annotation.TargetApi;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.pm.PackageManager;
import android.os.Build;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.Toast;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
public class MainActivity extends AppCompatActivity {
private static final String TAG = MainActivity.class.getSimpleName();
final private int REQUEST_CODE_ASK_MULTIPLE_PERMISSIONS = 0;
@TargetApi(Build.VERSION_CODES.M)
private void runStreamWrapper () {
List<String> permissionsNeeded = new ArrayList<String>();
final List<String> permissionsList = new ArrayList<String>();
if (!addPermission(permissionsList, Manifest.permission.RECORD_AUDIO))
permissionsNeeded.add("microphone");
if (!addPermission(permissionsList, Manifest.permission.CAMERA))
permissionsNeeded.add("camera");
if (permissionsList.size() > 0) {
if (permissionsNeeded.size() > 0) {
String message = "You need to grant access to the " + permissionsNeeded.get(0);
for (int i = 1; i < permissionsNeeded.size(); i++)
message = message + ", " + permissionsNeeded.get(i);
showMessageOKCancel(message, new DialogInterface.OnClickListener() {
@TargetApi(Build.VERSION_CODES.M)
@Override
public void onClick(DialogInterface dialog, int which) {
requestPermissions(permissionsList.toArray(new String[permissionsList.size()]),
REQUEST_CODE_ASK_MULTIPLE_PERMISSIONS);
}
});
return;
}
requestPermissions(permissionsList.toArray(new String[permissionsList.size()]),
REQUEST_CODE_ASK_MULTIPLE_PERMISSIONS);
}
runStream();
}
@TargetApi(Build.VERSION_CODES.M)
private boolean addPermission (List<String> permissionsList, String permission) {
if (checkSelfPermission(permission) != PackageManager.PERMISSION_GRANTED) {
permissionsList.add(permission);
if(!shouldShowRequestPermissionRationale(permission))
return false;
}
return true;
}
private void showMessageOKCancel (String message, DialogInterface.OnClickListener okListener) {
new AlertDialog.Builder(this)
.setMessage(message)
.setPositiveButton("OK",okListener)
.setNegativeButton("Cancel", null)
.create()
.show();
}
private void runStream() {
Toast.makeText(this, "Stream is running", Toast.LENGTH_LONG).show();
}
@Override
public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
switch (requestCode) {
case REQUEST_CODE_ASK_MULTIPLE_PERMISSIONS:
{
Map<String, Integer> perms = new HashMap<String, Integer>();
perms.put(Manifest.permission.RECORD_AUDIO, PackageManager.PERMISSION_GRANTED);
perms.put(Manifest.permission.CAMERA,PackageManager.PERMISSION_GRANTED);
for(int i = 0; i < permissions.length; i ++)
perms.put(permissions[i], grantResults[i]);
if(perms.get(Manifest.permission.RECORD_AUDIO) == PackageManager.PERMISSION_GRANTED
&& perms.get(Manifest.permission.CAMERA) == PackageManager.PERMISSION_GRANTED){
runStream();
} else {
Toast.makeText(this, "Some required permissions have been denied", Toast.LENGTH_LONG).show();
}
}
break;
default:
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
}
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
if (Build.VERSION.SDK_INT >= 23) {
runStreamWrapper();
} else {
runStream();
}
}
}
Adding the following code to my “runStream()” function
AudioManager audio = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
audio.setMode(AudioManager.MODE_IN_COMMUNICATION);
AudioGroup audioGroup = new AudioGroup();
audioGroup.setMode(AudioGroup.MODE_NORMAL);
AudioStream audioStream = new AudioStream(InetAddress.getByAddress(getLocalIPAddress()));
audioStream.setCodec(AudioCodec.PCMA);
audioStream.setMode(RtpStream.MODE_NORMAL);
//set receiver(vlc player) machine ip address(please update with your machine ip)
audioStream.associate(InetAddress.getByAddress(new byte[] {(byte)172, (byte)26, (byte)15, (byte)89 }), 8888);
audioStream.join(audioGroup);
And adding
public static byte[] getLocalIPAddress () {
byte ip[]=null;
try {
for (Enumeration en = NetworkInterface.getNetworkInterfaces(); en.hasMoreElements();) {
NetworkInterface intf = (NetworkInterface) en.nextElement();
for (Enumeration enumIpAddr = intf.getInetAddresses(); enumIpAddr.hasMoreElements();) {
InetAddress inetAddress = (InetAddress) enumIpAddr.nextElement();
if (!inetAddress.isLoopbackAddress()) {
ip= inetAddress.getAddress();
}
}
}
} catch (SocketException ex) {
Log.i("SocketException ", ex.toString());
}
return ip;
}
To bottom of my mainactivity
The code runs perfect on pre-M devices capturing audio and streaming it to the receiving computer. However on M devices no errors In the log BUT no audio either.
For anyone looking for a full copy of the code to try here you go Mainactivity.java
package com.example.androidmpermissions;
import android.Manifest;
import android.annotation.TargetApi;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.pm.PackageManager;
import android.media.AudioManager;
import android.net.rtp.AudioCodec;
import android.net.rtp.AudioGroup;
import android.net.rtp.AudioStream;
import android.net.rtp.RtpStream;
import android.os.Build;
import android.os.StrictMode;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.widget.Toast;
import java.net.InetAddress;
import java.net.NetworkInterface;
import java.net.SocketException;
import java.util.ArrayList;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
public class MainActivity extends AppCompatActivity {
private static final String TAG = MainActivity.class.getSimpleName();
final private int REQUEST_CODE_ASK_MULTIPLE_PERMISSIONS = 0;
@TargetApi(Build.VERSION_CODES.M)
private void runStreamWrapper () {
List<String> permissionsNeeded = new ArrayList<String>();
final List<String> permissionsList = new ArrayList<String>();
if (!addPermission(permissionsList, Manifest.permission.RECORD_AUDIO))
permissionsNeeded.add("microphone");
if (!addPermission(permissionsList, Manifest.permission.CAMERA))
permissionsNeeded.add("camera");
if (permissionsList.size() > 0) {
if (permissionsNeeded.size() > 0) {
String message = "You need to grant access to the " + permissionsNeeded.get(0);
for (int i = 1; i < permissionsNeeded.size(); i++)
message = message + ", " + permissionsNeeded.get(i);
showMessageOKCancel(message, new DialogInterface.OnClickListener() {
@TargetApi(Build.VERSION_CODES.M)
@Override
public void onClick(DialogInterface dialog, int which) {
requestPermissions(permissionsList.toArray(new String[permissionsList.size()]),
REQUEST_CODE_ASK_MULTIPLE_PERMISSIONS);
}
});
return;
}
requestPermissions(permissionsList.toArray(new String[permissionsList.size()]),
REQUEST_CODE_ASK_MULTIPLE_PERMISSIONS);
}
runStream();
}
@TargetApi(Build.VERSION_CODES.M)
private boolean addPermission (List<String> permissionsList, String permission) {
if (checkSelfPermission(permission) != PackageManager.PERMISSION_GRANTED) {
permissionsList.add(permission);
if(!shouldShowRequestPermissionRationale(permission))
return false;
}
return true;
}
private void showMessageOKCancel (String message, DialogInterface.OnClickListener okListener) {
new AlertDialog.Builder(this)
.setMessage(message)
.setPositiveButton("OK",okListener)
.setNegativeButton("Cancel", null)
.create()
.show();
}
@Override
public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
switch (requestCode) {
case REQUEST_CODE_ASK_MULTIPLE_PERMISSIONS:
{
Map<String, Integer> perms = new HashMap<String, Integer>();
perms.put(Manifest.permission.RECORD_AUDIO, PackageManager.PERMISSION_GRANTED);
perms.put(Manifest.permission.CAMERA,PackageManager.PERMISSION_GRANTED);
for(int i = 0; i < permissions.length; i ++)
perms.put(permissions[i], grantResults[i]);
if(perms.get(Manifest.permission.RECORD_AUDIO) == PackageManager.PERMISSION_GRANTED
&& perms.get(Manifest.permission.CAMERA) == PackageManager.PERMISSION_GRANTED){
runStream();
} else {
Toast.makeText(this, "Some required permissions have been denied", Toast.LENGTH_LONG).show();
}
}
break;
default:
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
}
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
StrictMode.setThreadPolicy(policy);
if (Build.VERSION.SDK_INT >= 23) {
runStreamWrapper();
} else {
runStream();
}
}
private void runStream() {
Toast.makeText(this, "Stream is running", Toast.LENGTH_LONG).show();
AudioManager audio = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
audio.setMode(AudioManager.MODE_IN_COMMUNICATION);
AudioGroup audioGroup = new AudioGroup();
audioGroup.setMode(AudioGroup.MODE_NORMAL);
AudioStream audioStream = new AudioStream(InetAddress.getByAddress(getLocalIPAddress()));
audioStream.setCodec(AudioCodec.PCMA);
audioStream.setMode(RtpStream.MODE_NORMAL);
//set receiver(vlc player) machine ip address(please update with your machine ip)
audioStream.associate(InetAddress.getByAddress(new byte[] {(byte)172, (byte)26, (byte)15, (byte)89 }), 8888);
audioStream.join(audioGroup);
}
public static byte[] getLocalIPAddress () {
byte ip[]=null;
try {
for (Enumeration en = NetworkInterface.getNetworkInterfaces(); en.hasMoreElements();) {
NetworkInterface intf = (NetworkInterface) en.nextElement();
for (Enumeration enumIpAddr = intf.getInetAddresses(); enumIpAddr.hasMoreElements();) {
InetAddress inetAddress = (InetAddress) enumIpAddr.nextElement();
if (!inetAddress.isLoopbackAddress()) {
ip= inetAddress.getAddress();
}
}
}
} catch (SocketException ex) {
Log.i("SocketException ", ex.toString());
}
return ip;
}
}
Android Manifest
<?xml version="1.0" encoding="utf-8"?>
<manifest package="com.example.androidmpermissions"
xmlns:android="http://schemas.android.com/apk/res/android">
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.MODIFY_AUDIO_SETTINGS" />
<uses-permission android:name="android.permission.RECORD_AUDIO" />
<uses-permission android:name="android.permission.CAMERA" />
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN"/>
<category android:name="android.intent.category.LAUNCHER"/>
</intent-filter>
</activity>
</application>
</manifest>