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mMicSpinner = (LabelledSpinner) findViewById(R.id.microphone);
mMicSpinner.setItemsArray(Flashphoner.getMediaDevices().getAudioList());

mMicLevel = (TextView) findViewById(R.id.microphone_level);

mCameraSpinner = (LabelledSpinner) findViewById(R.id.camera);
mCameraSpinner.setItemsArray(Flashphoner.getMediaDevices().getVideoList());

@NonNull
private Constraints getConstraints() {
    AudioConstraints audioConstraints = null;
    if (mSendAudio.isChecked()) {
        audioConstraints = new AudioConstraints();
        if (mUseFEC.isChecked()) {
            audioConstraints.setUseFEC(true);
        }
        if (mUseStereo.isChecked()) {
            audioConstraints.setUseStereo(true);
        }
        if (!mDefaultPublishAudioBitrate.isChecked() && mDefaultPublishAudioBitrate.getText().length() > 0) {
            audioConstraints.setBitrate(Integer.parseInt(mPublishAudioBitrate.getText().toString()));
        }
    }
    VideoConstraints videoConstraints = null;
    if (mSendVideo.isChecked()) {
        videoConstraints = new VideoConstraints();
        videoConstraints.setCameraId(((MediaDevice) mCameraSpinner.getSpinner().getSelectedItem()).getId());
        if (mCameraFPS.getText().length() > 0) {
            videoConstraints.setVideoFps(Integer.parseInt(mCameraFPS.getText().toString()));
        }
        if (mWidth.getText().length() > 0 && mHeight.getText().length() > 0) {
            videoConstraints.setResolution(Integer.parseInt(mWidth.getText().toString()),
                    Integer.parseInt(mHeight.getText().toString()));
        }
        if (!mDefaultPublishVideoBitrate.isChecked() && mPublishVideoBitrate.getText().length() > 0) {
             videoConstraints.setBitrate(Integer.parseInt(mPublishVideoBitrate.getText().toString()));
        }
    }
    return new Constraints(audioConstraints, videoConstraints);
}

case TEST_REQUEST_CODE: {
    if (grantResults.length == 0 ||
          grantResults[0] != PackageManager.PERMISSION_GRANTED ||
          grantResults[1] != PackageManager.PERMISSION_GRANTED) {
        Log.i(TAG, "Permission has been denied by user");
    } else {
        Flashphoner.getLocalMediaAccess(getConstraints(), localRender);
        mTestButton.setText(R.string.action_release);
        mTestButton.setTag(R.string.action_release);
        mStartButton.setEnabled(false);
        soundMeter = new SoundMeter();
        soundMeter.start();
        ...
        Log.i(TAG, "Permission has been granted by user");
    }
break;

SessionOptions sessionOptions = new SessionOptions(url);
sessionOptions.setLocalRenderer(localRender);
sessionOptions.setRemoteRenderer(remoteRender);

/**
  * Session for connection to WCS server is created with method createSession().
  */
session = Flashphoner.createSession(sessionOptions);

session.connect(new Connection());

@Override
public void onConnected(final Connection connection) {
   runOnUiThread(new Runnable() {
       @Override
       public void run() {
           mStartButton.setText(R.string.action_stop);
           mStartButton.setTag(R.string.action_stop);
           mStartButton.setEnabled(true);
           mTestButton.setEnabled(false);
           mStatusView.setText(connection.getStatus());;
           ...
       }
   });
}

publishStream = session.createStream(streamOptions);
if (mMuteAudio.isChecked()) {
    publishStream.muteAudio();
}
if (mMuteVideo.isChecked()) {
    publishStream.muteVideo();
}
...

ActivityCompat.requestPermissions(MediaDevicesActivity.this,
         new String[]{Manifest.permission.RECORD_AUDIO, Manifest.permission.CAMERA},
         PUBLISH_REQUEST_CODE);

case PUBLISH_REQUEST_CODE: {
    if (grantResults.length == 0 ||
           grantResults[0] != PackageManager.PERMISSION_GRANTED ||
           grantResults[1] != PackageManager.PERMISSION_GRANTED) {
        mStartButton.setEnabled(false);
        mTestButton.setEnabled(false);
        session.disconnect();
        Log.i(TAG, "Permission has been denied by user");
    } else {
        /**
          * Method Stream.publish() is called to publish stream.
          */
        publishStream.publish();
        Log.i(TAG, "Permission has been granted by user");
    }
    break;
}

publishStream.on(new StreamStatusEvent() {
    @Override
    public void onStreamStatus(final Stream stream, final StreamStatus streamStatus) {
        runOnUiThread(new Runnable() {
            @Override
            public void run() {
                if (StreamStatus.PUBLISHING.equals(streamStatus)) {
                    /**
                      * The options for the stream to play are set.
                      * The stream name is passed when StreamOptions object is created.
                      */
                    StreamOptions streamOptions = new StreamOptions(streamName);

                    streamOptions.setConstraints(new Constraints(mReceiveAudio.isChecked(), mReceiveVideo.isChecked()));

                    VideoConstraints videoConstraints = null;
                    if (mReceiveVideo.isChecked()) {
                        videoConstraints = new VideoConstraints();
                        ...
                    }
                    AudioConstraints audioConstraints = null;
                    if (mReceiveAudio.isChecked()) {
                        audioConstraints = new AudioConstraints();
                    }
                    streamOptions.setConstraints(new Constraints(audioConstraints, videoConstraints));
                    String[] stripCodec = {(String) mStripPlayerCodec.getSpinner().getSelectedItem()};
                    streamOptions.setStripCodecs(stripCodec);
                    /**
                      * Stream is created with method Session.createStream().
                      */
                    playStream = session.createStream(streamOptions);
                    ...
                    /**
                      * Method Stream.play() is called to start playback of the stream.
                      */
                    playStream.play();
                    if (mSendVideo.isChecked())
                        mSwitchCameraButton.setEnabled(true);
                    mSwitchRendererButton.setEnabled(true);
               } else {
                   Log.e(TAG, "Can not publish stream " + stream.getName() + " " + streamStatus);
               }
               mStatusView.setText(streamStatus.toString());
           }
       });
    }
});

mSwitchCameraButton.setOnClickListener(new OnClickListener() {
    @Override
    public void onClick(View view) {
        if (publishStream != null) {
            mSwitchCameraButton.setEnabled(false);
            publishStream.switchCamera(new CameraSwitchHandler() {
                @Override
                public void onCameraSwitchDone(boolean var1) {
                    runOnUiThread(new Runnable() {
                        @Override
                        public void run() {
                            mSwitchCameraButton.setEnabled(true);
                        }
                    });

                }

                @Override
                public void onCameraSwitchError(String var1) {
                    runOnUiThread(new Runnable() {
                        @Override
                        public void run() {
                            mSwitchCameraButton.setEnabled(true);
                        }
                    });
                }
            });
        }
    }

});

mSwitchRendererButton.setOnClickListener(new OnClickListener() {
    @Override
    public void onClick(View v) {
        if (spinner.getSelectedItemId() == 0){
            if (isSwitchRemoteRenderer) {
                playStream.switchRenderer(remoteRender);
                isSwitchRemoteRenderer = false;
            }
            if (!isSwitchLocalRenderer) {
                publishStream.switchRenderer(newSurfaceRenderer);
                isSwitchLocalRenderer = true;
            } else {
                publishStream.switchRenderer(localRender);
                isSwitchLocalRenderer = false;
            }
        } else {
            if (isSwitchLocalRenderer) {
                publishStream.switchRenderer(localRender);
                isSwitchLocalRenderer = false;
            }
            if (!isSwitchRemoteRenderer) {
                playStream.switchRenderer(newSurfaceRenderer);
                isSwitchRemoteRenderer = true;
            } else {
                playStream.switchRenderer(remoteRender);
                isSwitchRemoteRenderer = false;
            }
        }
    }
});

mStartButton.setEnabled(false);

/**
  * Connection to WCS server is closed with method Session.disconnect().
  */
session.disconnect();