RtpSessionActivity.java

   1package eu.siacs.conversations.ui;
   2
   3import static java.util.Arrays.asList;
   4import static eu.siacs.conversations.utils.PermissionUtils.getFirstDenied;
   5
   6import android.Manifest;
   7import android.annotation.SuppressLint;
   8import android.app.PictureInPictureParams;
   9import android.content.ActivityNotFoundException;
  10import android.content.Context;
  11import android.content.Intent;
  12import android.content.pm.PackageManager;
  13import android.os.Build;
  14import android.os.Bundle;
  15import android.os.Handler;
  16import android.os.PowerManager;
  17import android.os.SystemClock;
  18import android.util.Log;
  19import android.util.Rational;
  20import android.view.KeyEvent;
  21import android.view.Menu;
  22import android.view.MenuItem;
  23import android.view.View;
  24import android.view.WindowManager;
  25import android.widget.Toast;
  26
  27import androidx.annotation.NonNull;
  28import androidx.annotation.RequiresApi;
  29import androidx.annotation.StringRes;
  30import androidx.databinding.DataBindingUtil;
  31
  32import com.google.common.base.Optional;
  33import com.google.common.base.Preconditions;
  34import com.google.common.base.Throwables;
  35import com.google.common.collect.ImmutableList;
  36import com.google.common.collect.ImmutableSet;
  37import com.google.common.util.concurrent.FutureCallback;
  38import com.google.common.util.concurrent.Futures;
  39
  40import org.checkerframework.checker.nullness.compatqual.NullableDecl;
  41import org.jetbrains.annotations.NotNull;
  42import org.webrtc.RendererCommon;
  43import org.webrtc.SurfaceViewRenderer;
  44import org.webrtc.VideoTrack;
  45
  46import java.lang.ref.WeakReference;
  47import java.util.Arrays;
  48import java.util.Collections;
  49import java.util.List;
  50import java.util.Set;
  51
  52import eu.siacs.conversations.Config;
  53import eu.siacs.conversations.R;
  54import eu.siacs.conversations.databinding.ActivityRtpSessionBinding;
  55import eu.siacs.conversations.entities.Account;
  56import eu.siacs.conversations.entities.Contact;
  57import eu.siacs.conversations.entities.Conversation;
  58import eu.siacs.conversations.services.AppRTCAudioManager;
  59import eu.siacs.conversations.services.XmppConnectionService;
  60import eu.siacs.conversations.ui.widget.DialpadView;
  61import eu.siacs.conversations.ui.util.AvatarWorkerTask;
  62import eu.siacs.conversations.ui.util.MainThreadExecutor;
  63import eu.siacs.conversations.ui.util.Rationals;
  64import eu.siacs.conversations.utils.PermissionUtils;
  65import eu.siacs.conversations.utils.TimeFrameUtils;
  66import eu.siacs.conversations.xml.Namespace;
  67import eu.siacs.conversations.xmpp.Jid;
  68import eu.siacs.conversations.xmpp.jingle.AbstractJingleConnection;
  69import eu.siacs.conversations.xmpp.jingle.JingleConnectionManager;
  70import eu.siacs.conversations.xmpp.jingle.JingleRtpConnection;
  71import eu.siacs.conversations.xmpp.jingle.Media;
  72import eu.siacs.conversations.xmpp.jingle.RtpEndUserState;
  73
  74import com.cheogram.android.ConnectionService.ConnectionBinder;
  75
  76import static eu.siacs.conversations.utils.PermissionUtils.getFirstDenied;
  77import static java.util.Arrays.asList;
  78
  79public class RtpSessionActivity extends XmppActivity implements XmppConnectionService.OnJingleRtpConnectionUpdate, eu.siacs.conversations.ui.widget.SurfaceViewRenderer.OnAspectRatioChanged {
  80
  81    public static final String EXTRA_WITH = "with";
  82    public static final String EXTRA_SESSION_ID = "session_id";
  83    public static final String EXTRA_LAST_REPORTED_STATE = "last_reported_state";
  84    public static final String EXTRA_LAST_ACTION = "last_action";
  85    public static final String EXTRA_CONNECTION_BINDER = "connection_binder";
  86    public static final String ACTION_ACCEPT_CALL = "action_accept_call";
  87    public static final String ACTION_MAKE_VOICE_CALL = "action_make_voice_call";
  88    public static final String ACTION_MAKE_VIDEO_CALL = "action_make_video_call";
  89
  90    private static final int CALL_DURATION_UPDATE_INTERVAL = 333;
  91
  92    private static final List<RtpEndUserState> END_CARD = Arrays.asList(
  93            RtpEndUserState.APPLICATION_ERROR,
  94            RtpEndUserState.SECURITY_ERROR,
  95            RtpEndUserState.DECLINED_OR_BUSY,
  96            RtpEndUserState.CONNECTIVITY_ERROR,
  97            RtpEndUserState.CONNECTIVITY_LOST_ERROR,
  98            RtpEndUserState.RETRACTED
  99    );
 100    private static final List<RtpEndUserState> STATES_SHOWING_HELP_BUTTON = Arrays.asList(
 101            RtpEndUserState.APPLICATION_ERROR,
 102            RtpEndUserState.CONNECTIVITY_ERROR,
 103            RtpEndUserState.SECURITY_ERROR
 104    );
 105    private static final List<RtpEndUserState> STATES_SHOWING_SWITCH_TO_CHAT = Arrays.asList(
 106            RtpEndUserState.CONNECTING,
 107            RtpEndUserState.CONNECTED,
 108            RtpEndUserState.RECONNECTING
 109    );
 110    private static final List<RtpEndUserState> STATES_CONSIDERED_CONNECTED = Arrays.asList(
 111            RtpEndUserState.CONNECTED,
 112            RtpEndUserState.RECONNECTING
 113    );
 114    private static final List<RtpEndUserState> STATES_SHOWING_PIP_PLACEHOLDER = Arrays.asList(
 115            RtpEndUserState.ACCEPTING_CALL,
 116            RtpEndUserState.CONNECTING,
 117            RtpEndUserState.RECONNECTING
 118    );
 119    private static final String PROXIMITY_WAKE_LOCK_TAG = "conversations:in-rtp-session";
 120    private static final int REQUEST_ACCEPT_CALL = 0x1111;
 121    private WeakReference<JingleRtpConnection> rtpConnectionReference;
 122
 123    private ActivityRtpSessionBinding binding;
 124    private PowerManager.WakeLock mProximityWakeLock;
 125
 126    private final Handler mHandler = new Handler();
 127    private final Runnable mTickExecutor = new Runnable() {
 128        @Override
 129        public void run() {
 130            updateCallDuration();
 131            mHandler.postDelayed(mTickExecutor, CALL_DURATION_UPDATE_INTERVAL);
 132        }
 133    };
 134
 135    private static Set<Media> actionToMedia(final String action) {
 136        if (ACTION_MAKE_VIDEO_CALL.equals(action)) {
 137            return ImmutableSet.of(Media.AUDIO, Media.VIDEO);
 138        } else {
 139            return ImmutableSet.of(Media.AUDIO);
 140        }
 141    }
 142
 143    private static void addSink(final VideoTrack videoTrack, final SurfaceViewRenderer surfaceViewRenderer) {
 144        try {
 145            videoTrack.addSink(surfaceViewRenderer);
 146        } catch (final IllegalStateException e) {
 147            Log.e(Config.LOGTAG, "possible race condition on trying to display video track. ignoring", e);
 148        }
 149    }
 150
 151    protected android.os.IBinder connectionBinder = null;
 152
 153    @Override
 154    public void onCreate(Bundle savedInstanceState) {
 155        super.onCreate(savedInstanceState);
 156        getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON
 157                | WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD
 158                | WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED
 159                | WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON);
 160        this.binding = DataBindingUtil.setContentView(this, R.layout.activity_rtp_session);
 161        setSupportActionBar(binding.toolbar);
 162
 163        binding.dialpad.setClickConsumer(tag -> {
 164            requireRtpConnection().applyDtmfTone(tag);
 165        });
 166
 167        if (savedInstanceState != null) {
 168            boolean dialpadVisible = savedInstanceState.getBoolean("dialpad_visible");
 169            binding.dialpad.setVisibility(dialpadVisible ? View.VISIBLE : View.GONE);
 170        }
 171
 172        this.connectionBinder = getIntent().getExtras().getBinder(EXTRA_CONNECTION_BINDER);
 173    }
 174
 175    @Override
 176    public boolean onCreateOptionsMenu(final Menu menu) {
 177        getMenuInflater().inflate(R.menu.activity_rtp_session, menu);
 178        final MenuItem help = menu.findItem(R.id.action_help);
 179        final MenuItem gotoChat = menu.findItem(R.id.action_goto_chat);
 180        final MenuItem dialpad = menu.findItem(R.id.action_dialpad);
 181        help.setVisible(isHelpButtonVisible());
 182        gotoChat.setVisible(isSwitchToConversationVisible());
 183        dialpad.setVisible(isAudioOnlyConversation());
 184        return super.onCreateOptionsMenu(menu);
 185    }
 186
 187    @Override
 188    public boolean onKeyDown(final int keyCode, final KeyEvent event) {
 189        if (keyCode == KeyEvent.KEYCODE_VOLUME_DOWN) {
 190            if (xmppConnectionService != null) {
 191                if (xmppConnectionService.getNotificationService().stopSoundAndVibration()) {
 192                    return true;
 193                }
 194            }
 195        }
 196        return super.onKeyDown(keyCode, event);
 197    }
 198
 199    private boolean isHelpButtonVisible() {
 200        try {
 201            return STATES_SHOWING_HELP_BUTTON.contains(requireRtpConnection().getEndUserState());
 202        } catch (IllegalStateException e) {
 203            final Intent intent = getIntent();
 204            final String state = intent != null ? intent.getStringExtra(EXTRA_LAST_REPORTED_STATE) : null;
 205            if (state != null) {
 206                return STATES_SHOWING_HELP_BUTTON.contains(RtpEndUserState.valueOf(state));
 207            } else {
 208                return false;
 209            }
 210        }
 211    }
 212
 213    private boolean isSwitchToConversationVisible() {
 214        final JingleRtpConnection connection = this.rtpConnectionReference != null ? this.rtpConnectionReference.get() : null;
 215        return connection != null && STATES_SHOWING_SWITCH_TO_CHAT.contains(connection.getEndUserState());
 216    }
 217
 218    private boolean isAudioOnlyConversation() {
 219        final JingleRtpConnection connection =
 220                this.rtpConnectionReference != null ? this.rtpConnectionReference.get() : null;
 221
 222        return connection != null && !connection.getMedia().contains(Media.VIDEO);
 223    }
 224
 225    private void switchToConversation() {
 226        final Contact contact = getWith();
 227        final Conversation conversation = xmppConnectionService.findOrCreateConversation(contact.getAccount(), contact.getJid(), false, true);
 228        switchToConversation(conversation);
 229    }
 230
 231    private void toggleDialpadVisibility() {
 232        if (binding.dialpad.getVisibility() == View.VISIBLE) {
 233            binding.dialpad.setVisibility(View.GONE);
 234        }
 235        else {
 236            binding.dialpad.setVisibility(View.VISIBLE);
 237        }
 238    }
 239
 240    public boolean onOptionsItemSelected(final MenuItem item) {
 241        switch (item.getItemId()) {
 242            case R.id.action_help:
 243                launchHelpInBrowser();
 244                break;
 245            case R.id.action_goto_chat:
 246                switchToConversation();
 247                break;
 248            case R.id.action_dialpad:
 249                toggleDialpadVisibility();
 250                break;
 251        }
 252        return super.onOptionsItemSelected(item);
 253    }
 254
 255    private void launchHelpInBrowser() {
 256        final Intent intent = new Intent(Intent.ACTION_VIEW, Config.HELP);
 257        try {
 258            startActivity(intent);
 259        } catch (final ActivityNotFoundException e) {
 260            Toast.makeText(this, R.string.no_application_found_to_open_link, Toast.LENGTH_LONG).show();
 261        }
 262    }
 263
 264    private void endCall(View view) {
 265        endCall();
 266    }
 267
 268    private void endCall() {
 269        if (this.rtpConnectionReference == null) {
 270            retractSessionProposal();
 271            finish();
 272        } else {
 273            requireRtpConnection().endCall();
 274        }
 275        disconnectConnectionBinder();
 276    }
 277
 278    private void disconnectConnectionBinder() {
 279        if (connectionBinder != null) {
 280            android.os.Parcel args = android.os.Parcel.obtain();
 281            try {
 282                connectionBinder.transact(ConnectionBinder.TRANSACT_DISCONNECT, args, null, 0);
 283            } catch (android.os.RemoteException e) {}
 284            args.recycle();
 285        }
 286    }
 287
 288    private void activateConnectionBinder() {
 289        // If we do this, the other UI takes over and kills our call
 290        // So we can't activate that UI unless we are going to use it.
 291        /*if (connectionBinder != null) {
 292            android.os.Parcel args = android.os.Parcel.obtain();
 293            try {
 294                connectionBinder.transact(ConnectionBinder.TRANSACT_ACTIVE, args, null, 0);
 295            } catch (android.os.RemoteException e) {}
 296            args.recycle();
 297        }*/
 298    }
 299
 300    private void retractSessionProposal() {
 301        final Intent intent = getIntent();
 302        final String action = intent.getAction();
 303        final Account account = extractAccount(intent);
 304        final Jid with = Jid.ofEscaped(intent.getStringExtra(EXTRA_WITH));
 305        final String state = intent.getStringExtra(EXTRA_LAST_REPORTED_STATE);
 306        if (!Intent.ACTION_VIEW.equals(action) || state == null || !END_CARD.contains(RtpEndUserState.valueOf(state))) {
 307            resetIntent(account, with, RtpEndUserState.RETRACTED, actionToMedia(intent.getAction()));
 308        }
 309        xmppConnectionService.getJingleConnectionManager().retractSessionProposal(account, with.asBareJid());
 310    }
 311
 312    private void rejectCall(View view) {
 313        requireRtpConnection().rejectCall();
 314        finish();
 315    }
 316
 317    private void acceptCall(View view) {
 318        requestPermissionsAndAcceptCall();
 319    }
 320
 321    private void requestPermissionsAndAcceptCall() {
 322        final List<String> permissions;
 323        if (getMedia().contains(Media.VIDEO)) {
 324            permissions = ImmutableList.of(Manifest.permission.CAMERA, Manifest.permission.RECORD_AUDIO);
 325        } else {
 326            permissions = ImmutableList.of(Manifest.permission.RECORD_AUDIO);
 327        }
 328        if (PermissionUtils.hasPermission(this, permissions, REQUEST_ACCEPT_CALL)) {
 329            putScreenInCallMode();
 330            checkRecorderAndAcceptCall();
 331        }
 332    }
 333
 334    private void checkRecorderAndAcceptCall() {
 335        checkMicrophoneAvailability();
 336        try {
 337            requireRtpConnection().acceptCall();
 338        } catch (final IllegalStateException e) {
 339            Toast.makeText(this, e.getMessage(), Toast.LENGTH_SHORT).show();
 340        }
 341    }
 342
 343    private void checkMicrophoneAvailability() {
 344        new Thread(() -> {
 345            final long start = SystemClock.elapsedRealtime();
 346            final boolean isMicrophoneAvailable = AppRTCAudioManager.isMicrophoneAvailable();
 347            final long stop = SystemClock.elapsedRealtime();
 348            Log.d(Config.LOGTAG, "checking microphone availability took " + (stop - start) + "ms");
 349            if (isMicrophoneAvailable) {
 350                return;
 351            }
 352            runOnUiThread(() -> Toast.makeText(this, R.string.microphone_unavailable, Toast.LENGTH_LONG).show());
 353        }
 354        ).start();
 355    }
 356
 357    private void putScreenInCallMode() {
 358        putScreenInCallMode(requireRtpConnection().getMedia());
 359    }
 360
 361    private void putScreenInCallMode(final Set<Media> media) {
 362        getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
 363        if (!media.contains(Media.VIDEO)) {
 364            final JingleRtpConnection rtpConnection = rtpConnectionReference != null ? rtpConnectionReference.get() : null;
 365            final AppRTCAudioManager audioManager = rtpConnection == null ? null : rtpConnection.getAudioManager();
 366            if (audioManager == null || audioManager.getSelectedAudioDevice() == AppRTCAudioManager.AudioDevice.EARPIECE) {
 367                acquireProximityWakeLock();
 368            }
 369        }
 370    }
 371
 372    @SuppressLint("WakelockTimeout")
 373    private void acquireProximityWakeLock() {
 374        final PowerManager powerManager = (PowerManager) getSystemService(Context.POWER_SERVICE);
 375        if (powerManager == null) {
 376            Log.e(Config.LOGTAG, "power manager not available");
 377            return;
 378        }
 379        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
 380            if (this.mProximityWakeLock == null) {
 381                this.mProximityWakeLock = powerManager.newWakeLock(PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK, PROXIMITY_WAKE_LOCK_TAG);
 382            }
 383            if (!this.mProximityWakeLock.isHeld()) {
 384                Log.d(Config.LOGTAG, "acquiring proximity wake lock");
 385                this.mProximityWakeLock.acquire();
 386            }
 387        }
 388    }
 389
 390    private void releaseProximityWakeLock() {
 391        if (this.mProximityWakeLock != null && mProximityWakeLock.isHeld()) {
 392            Log.d(Config.LOGTAG, "releasing proximity wake lock");
 393            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
 394                this.mProximityWakeLock.release(PowerManager.RELEASE_FLAG_WAIT_FOR_NO_PROXIMITY);
 395            } else {
 396                this.mProximityWakeLock.release();
 397            }
 398            this.mProximityWakeLock = null;
 399        }
 400    }
 401
 402    private void putProximityWakeLockInProperState(final AppRTCAudioManager.AudioDevice audioDevice) {
 403        if (audioDevice == AppRTCAudioManager.AudioDevice.EARPIECE) {
 404            acquireProximityWakeLock();
 405        } else {
 406            releaseProximityWakeLock();
 407        }
 408    }
 409
 410    @Override
 411    protected void refreshUiReal() {
 412
 413    }
 414
 415    @Override
 416    public void onNewIntent(final Intent intent) {
 417        Log.d(Config.LOGTAG, this.getClass().getName() + ".onNewIntent()");
 418        super.onNewIntent(intent);
 419        setIntent(intent);
 420        if (xmppConnectionService == null) {
 421            Log.d(Config.LOGTAG, "RtpSessionActivity: background service wasn't bound in onNewIntent()");
 422            return;
 423        }
 424        final Account account = extractAccount(intent);
 425        final String action = intent.getAction();
 426        final Jid with = Jid.ofEscaped(intent.getStringExtra(EXTRA_WITH));
 427        final String sessionId = intent.getStringExtra(EXTRA_SESSION_ID);
 428        if (sessionId != null) {
 429            Log.d(Config.LOGTAG, "reinitializing from onNewIntent()");
 430            if (initializeActivityWithRunningRtpSession(account, with, sessionId)) {
 431                return;
 432            }
 433            if (ACTION_ACCEPT_CALL.equals(intent.getAction())) {
 434                Log.d(Config.LOGTAG, "accepting call from onNewIntent()");
 435                requestPermissionsAndAcceptCall();
 436                resetIntent(intent.getExtras());
 437            }
 438        } else if (asList(ACTION_MAKE_VIDEO_CALL, ACTION_MAKE_VOICE_CALL).contains(action)) {
 439            proposeJingleRtpSession(account, with, actionToMedia(action));
 440            binding.with.setText(account.getRoster().getContact(with).getDisplayName());
 441            binding.withJid.setText(with.asBareJid());
 442        } else {
 443            throw new IllegalStateException("received onNewIntent without sessionId");
 444        }
 445    }
 446
 447    @Override
 448    void onBackendConnected() {
 449        final Intent intent = getIntent();
 450        final String action = intent.getAction();
 451        final Account account = extractAccount(intent);
 452        final Jid with = Jid.ofEscaped(intent.getStringExtra(EXTRA_WITH));
 453        final String sessionId = intent.getStringExtra(EXTRA_SESSION_ID);
 454        if (sessionId != null) {
 455            if (initializeActivityWithRunningRtpSession(account, with, sessionId)) {
 456                return;
 457            }
 458            if (ACTION_ACCEPT_CALL.equals(intent.getAction())) {
 459                Log.d(Config.LOGTAG, "intent action was accept");
 460                requestPermissionsAndAcceptCall();
 461                resetIntent(intent.getExtras());
 462            }
 463        } else if (asList(ACTION_MAKE_VIDEO_CALL, ACTION_MAKE_VOICE_CALL).contains(action)) {
 464            proposeJingleRtpSession(account, with, actionToMedia(action));
 465            binding.with.setText(account.getRoster().getContact(with).getDisplayName());
 466            binding.withJid.setText(with.asBareJid());
 467        } else if (Intent.ACTION_VIEW.equals(action)) {
 468            final String extraLastState = intent.getStringExtra(EXTRA_LAST_REPORTED_STATE);
 469            final RtpEndUserState state = extraLastState == null ? null : RtpEndUserState.valueOf(extraLastState);
 470            if (state != null) {
 471                Log.d(Config.LOGTAG, "restored last state from intent extra");
 472                updateButtonConfiguration(state);
 473                updateVerifiedShield(false);
 474                updateStateDisplay(state);
 475                updateProfilePicture(state);
 476                invalidateOptionsMenu();
 477            }
 478            binding.with.setText(account.getRoster().getContact(with).getDisplayName());
 479            binding.withJid.setText(with.asBareJid());
 480            if (xmppConnectionService.getJingleConnectionManager().fireJingleRtpConnectionStateUpdates()) {
 481                return;
 482            }
 483            if (END_CARD.contains(state) || xmppConnectionService.getJingleConnectionManager().hasMatchingProposal(account, with)) {
 484                return;
 485            }
 486            Log.d(Config.LOGTAG, "restored state (" + state + ") was not an end card. finishing");
 487            finish();
 488        }
 489    }
 490
 491    private void proposeJingleRtpSession(final Account account, final Jid with, final Set<Media> media) {
 492        checkMicrophoneAvailability();
 493        if (with.isBareJid()) {
 494            xmppConnectionService.getJingleConnectionManager().proposeJingleRtpSession(account, with, media);
 495        } else {
 496            final String sessionId = xmppConnectionService.getJingleConnectionManager().initializeRtpSession(account, with, media);
 497            initializeActivityWithRunningRtpSession(account, with, sessionId);
 498            resetIntent(account, with, sessionId);
 499        }
 500        putScreenInCallMode(media);
 501    }
 502
 503    @Override
 504    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
 505        super.onRequestPermissionsResult(requestCode, permissions, grantResults);
 506        if (PermissionUtils.allGranted(grantResults)) {
 507            if (requestCode == REQUEST_ACCEPT_CALL) {
 508                checkRecorderAndAcceptCall();
 509            }
 510        } else {
 511            @StringRes int res;
 512            final String firstDenied = getFirstDenied(grantResults, permissions);
 513            if (Manifest.permission.RECORD_AUDIO.equals(firstDenied)) {
 514                res = R.string.no_microphone_permission;
 515            } else if (Manifest.permission.CAMERA.equals(firstDenied)) {
 516                res = R.string.no_camera_permission;
 517            } else {
 518                throw new IllegalStateException("Invalid permission result request");
 519            }
 520            Toast.makeText(this, getString(res, getString(R.string.app_name)), Toast.LENGTH_SHORT).show();
 521        }
 522    }
 523
 524    @Override
 525    public void onStart() {
 526        super.onStart();
 527        mHandler.postDelayed(mTickExecutor, CALL_DURATION_UPDATE_INTERVAL);
 528        this.binding.remoteVideo.setOnAspectRatioChanged(this);
 529    }
 530
 531    @Override
 532    public void onStop() {
 533        mHandler.removeCallbacks(mTickExecutor);
 534        binding.remoteVideo.release();
 535        binding.remoteVideo.setOnAspectRatioChanged(null);
 536        binding.localVideo.release();
 537        final WeakReference<JingleRtpConnection> weakReference = this.rtpConnectionReference;
 538        final JingleRtpConnection jingleRtpConnection = weakReference == null ? null : weakReference.get();
 539        if (jingleRtpConnection != null) {
 540            releaseVideoTracks(jingleRtpConnection);
 541        }
 542        releaseProximityWakeLock();
 543        super.onStop();
 544    }
 545
 546    private void releaseVideoTracks(final JingleRtpConnection jingleRtpConnection) {
 547        final Optional<VideoTrack> remoteVideo = jingleRtpConnection.getRemoteVideoTrack();
 548        if (remoteVideo.isPresent()) {
 549            remoteVideo.get().removeSink(binding.remoteVideo);
 550        }
 551        final Optional<VideoTrack> localVideo = jingleRtpConnection.getLocalVideoTrack();
 552        if (localVideo.isPresent()) {
 553            localVideo.get().removeSink(binding.localVideo);
 554        }
 555    }
 556
 557    @Override
 558    public void onBackPressed() {
 559        if (isConnected()) {
 560            if (switchToPictureInPicture()) {
 561                return;
 562            }
 563        } else {
 564            endCall();
 565        }
 566        super.onBackPressed();
 567    }
 568
 569    @Override
 570    public void onUserLeaveHint() {
 571        super.onUserLeaveHint();
 572        if (switchToPictureInPicture()) {
 573            return;
 574        }
 575        //TODO apparently this method is not getting called on Android 10 when using the task switcher
 576        if (emptyReference(rtpConnectionReference) && xmppConnectionService != null) {
 577            retractSessionProposal();
 578        }
 579    }
 580
 581    private boolean isConnected() {
 582        final JingleRtpConnection connection = this.rtpConnectionReference != null ? this.rtpConnectionReference.get() : null;
 583        return connection != null && STATES_CONSIDERED_CONNECTED.contains(connection.getEndUserState());
 584    }
 585
 586    private boolean switchToPictureInPicture() {
 587        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O && deviceSupportsPictureInPicture()) {
 588            if (shouldBePictureInPicture()) {
 589                startPictureInPicture();
 590                return true;
 591            }
 592        }
 593        return false;
 594    }
 595
 596    @RequiresApi(api = Build.VERSION_CODES.O)
 597    private void startPictureInPicture() {
 598        try {
 599            final Rational rational = this.binding.remoteVideo.getAspectRatio();
 600            final Rational clippedRational = Rationals.clip(rational);
 601            Log.d(Config.LOGTAG, "suggested rational " + rational + ". clipped to " + clippedRational);
 602            enterPictureInPictureMode(
 603                    new PictureInPictureParams.Builder()
 604                            .setAspectRatio(clippedRational)
 605                            .build()
 606            );
 607        } catch (final IllegalStateException e) {
 608            //this sometimes happens on Samsung phones (possibly when Knox is enabled)
 609            Log.w(Config.LOGTAG, "unable to enter picture in picture mode", e);
 610        }
 611    }
 612
 613    @Override
 614    public void onAspectRatioChanged(final Rational rational) {
 615        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O && isPictureInPicture()) {
 616            final Rational clippedRational = Rationals.clip(rational);
 617            Log.d(Config.LOGTAG, "suggested rational after aspect ratio change " + rational + ". clipped to " + clippedRational);
 618            setPictureInPictureParams(new PictureInPictureParams.Builder()
 619                    .setAspectRatio(clippedRational)
 620                    .build());
 621        }
 622    }
 623
 624    private boolean deviceSupportsPictureInPicture() {
 625        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
 626            return getPackageManager().hasSystemFeature(PackageManager.FEATURE_PICTURE_IN_PICTURE);
 627        } else {
 628            return false;
 629        }
 630    }
 631
 632    private boolean shouldBePictureInPicture() {
 633        try {
 634            final JingleRtpConnection rtpConnection = requireRtpConnection();
 635            return rtpConnection.getMedia().contains(Media.VIDEO) && Arrays.asList(
 636                    RtpEndUserState.ACCEPTING_CALL,
 637                    RtpEndUserState.CONNECTING,
 638                    RtpEndUserState.CONNECTED
 639            ).contains(rtpConnection.getEndUserState());
 640        } catch (final IllegalStateException e) {
 641            return false;
 642        }
 643    }
 644
 645    private boolean initializeActivityWithRunningRtpSession(final Account account, Jid with, String sessionId) {
 646        final WeakReference<JingleRtpConnection> reference = xmppConnectionService.getJingleConnectionManager()
 647                .findJingleRtpConnection(account, with, sessionId);
 648        if (reference == null || reference.get() == null) {
 649            final JingleConnectionManager.TerminatedRtpSession terminatedRtpSession = xmppConnectionService
 650                    .getJingleConnectionManager().getTerminalSessionState(with, sessionId);
 651            if (terminatedRtpSession == null) {
 652                throw new IllegalStateException("failed to initialize activity with running rtp session. session not found");
 653            }
 654            initializeWithTerminatedSessionState(account, with, terminatedRtpSession);
 655            return true;
 656        }
 657        this.rtpConnectionReference = reference;
 658        final RtpEndUserState currentState = requireRtpConnection().getEndUserState();
 659        final boolean verified = requireRtpConnection().isVerified();
 660        if (currentState == RtpEndUserState.ENDED) {
 661            reference.get().throwStateTransitionException();
 662            finish();
 663            return true;
 664        }
 665        final Set<Media> media = getMedia();
 666        if (currentState == RtpEndUserState.INCOMING_CALL) {
 667            getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
 668        }
 669        if (JingleRtpConnection.STATES_SHOWING_ONGOING_CALL.contains(requireRtpConnection().getState())) {
 670            putScreenInCallMode();
 671        }
 672        binding.with.setText(getWith().getDisplayName());
 673        binding.withJid.setText(with.asBareJid());
 674        updateVideoViews(currentState);
 675        updateStateDisplay(currentState, media);
 676        updateVerifiedShield(verified && STATES_SHOWING_SWITCH_TO_CHAT.contains(currentState));
 677        updateButtonConfiguration(currentState, media);
 678        updateProfilePicture(currentState);
 679        invalidateOptionsMenu();
 680        return false;
 681    }
 682
 683    private void initializeWithTerminatedSessionState(final Account account, final Jid with, final JingleConnectionManager.TerminatedRtpSession terminatedRtpSession) {
 684        Log.d(Config.LOGTAG, "initializeWithTerminatedSessionState()");
 685        if (terminatedRtpSession.state == RtpEndUserState.ENDED) {
 686            finish();
 687            return;
 688        }
 689        RtpEndUserState state = terminatedRtpSession.state;
 690        resetIntent(account, with, terminatedRtpSession.state, terminatedRtpSession.media);
 691        updateButtonConfiguration(state);
 692        updateStateDisplay(state);
 693        updateProfilePicture(state);
 694        updateCallDuration();
 695        updateVerifiedShield(false);
 696        invalidateOptionsMenu();
 697        binding.with.setText(account.getRoster().getContact(with).getDisplayName());
 698        binding.withJid.setText(with.asBareJid());
 699    }
 700
 701    private void reInitializeActivityWithRunningRtpSession(final Account account, Jid with, String sessionId) {
 702        runOnUiThread(() -> initializeActivityWithRunningRtpSession(account, with, sessionId));
 703        resetIntent(account, with, sessionId);
 704    }
 705
 706    private void resetIntent(final Account account, final Jid with, final String sessionId) {
 707        final Intent intent = new Intent(Intent.ACTION_VIEW);
 708        intent.putExtra(EXTRA_ACCOUNT, account.getJid().toEscapedString());
 709        intent.putExtra(EXTRA_WITH, with.toEscapedString());
 710        intent.putExtra(EXTRA_SESSION_ID, sessionId);
 711        setIntent(intent);
 712    }
 713
 714    private void ensureSurfaceViewRendererIsSetup(final SurfaceViewRenderer surfaceViewRenderer) {
 715        surfaceViewRenderer.setVisibility(View.VISIBLE);
 716        try {
 717            surfaceViewRenderer.init(requireRtpConnection().getEglBaseContext(), null);
 718        } catch (final IllegalStateException e) {
 719            //Log.d(Config.LOGTAG, "SurfaceViewRenderer was already initialized");
 720        }
 721        surfaceViewRenderer.setEnableHardwareScaler(true);
 722    }
 723
 724    private void updateStateDisplay(final RtpEndUserState state) {
 725        updateStateDisplay(state, Collections.emptySet());
 726    }
 727
 728    private void updateStateDisplay(final RtpEndUserState state, final Set<Media> media) {
 729        switch (state) {
 730            case INCOMING_CALL:
 731                Preconditions.checkArgument(media.size() > 0, "Media must not be empty");
 732                if (media.contains(Media.VIDEO)) {
 733                    setTitle(R.string.rtp_state_incoming_video_call);
 734                } else {
 735                    setTitle(R.string.rtp_state_incoming_call);
 736                }
 737                break;
 738            case CONNECTING:
 739                setTitle(R.string.rtp_state_connecting);
 740                break;
 741            case CONNECTED:
 742                setTitle(R.string.rtp_state_connected);
 743                break;
 744            case RECONNECTING:
 745                setTitle(R.string.rtp_state_reconnecting);
 746                break;
 747            case ACCEPTING_CALL:
 748                setTitle(R.string.rtp_state_accepting_call);
 749                break;
 750            case ENDING_CALL:
 751                setTitle(R.string.rtp_state_ending_call);
 752                break;
 753            case FINDING_DEVICE:
 754                setTitle(R.string.rtp_state_finding_device);
 755                break;
 756            case RINGING:
 757                setTitle(R.string.rtp_state_ringing);
 758                break;
 759            case DECLINED_OR_BUSY:
 760                setTitle(R.string.rtp_state_declined_or_busy);
 761                break;
 762            case CONNECTIVITY_ERROR:
 763                setTitle(R.string.rtp_state_connectivity_error);
 764                break;
 765            case CONNECTIVITY_LOST_ERROR:
 766                setTitle(R.string.rtp_state_connectivity_lost_error);
 767                break;
 768            case RETRACTED:
 769                setTitle(R.string.rtp_state_retracted);
 770                break;
 771            case APPLICATION_ERROR:
 772                setTitle(R.string.rtp_state_application_failure);
 773                break;
 774            case SECURITY_ERROR:
 775                setTitle(R.string.rtp_state_security_error);
 776                break;
 777            case ENDED:
 778                throw new IllegalStateException("Activity should have called finishAndReleaseWakeLock();");
 779            default:
 780                throw new IllegalStateException(String.format("State %s has not been handled in UI", state));
 781        }
 782    }
 783
 784    private void updateVerifiedShield(final boolean verified) {
 785        if (isPictureInPicture()) {
 786            this.binding.verified.setVisibility(View.GONE);
 787            return;
 788        }
 789        this.binding.verified.setVisibility(verified ? View.VISIBLE : View.GONE);
 790    }
 791
 792    private void updateProfilePicture(final RtpEndUserState state) {
 793        updateProfilePicture(state, null);
 794    }
 795
 796    private void updateProfilePicture(final RtpEndUserState state, final Contact contact) {
 797        if (state == RtpEndUserState.INCOMING_CALL || state == RtpEndUserState.ACCEPTING_CALL) {
 798            final boolean show = getResources().getBoolean(R.bool.show_avatar_incoming_call);
 799            if (show) {
 800                binding.contactPhoto.setVisibility(View.VISIBLE);
 801                if (contact == null) {
 802                    AvatarWorkerTask.loadAvatar(getWith(), binding.contactPhoto, R.dimen.publish_avatar_size);
 803                } else {
 804                    AvatarWorkerTask.loadAvatar(contact, binding.contactPhoto, R.dimen.publish_avatar_size);
 805                }
 806            } else {
 807                binding.contactPhoto.setVisibility(View.GONE);
 808            }
 809        } else {
 810            binding.contactPhoto.setVisibility(View.GONE);
 811        }
 812    }
 813
 814    private Set<Media> getMedia() {
 815        return requireRtpConnection().getMedia();
 816    }
 817
 818    private void updateButtonConfiguration(final RtpEndUserState state) {
 819        updateButtonConfiguration(state, Collections.emptySet());
 820    }
 821
 822    @SuppressLint("RestrictedApi")
 823    private void updateButtonConfiguration(final RtpEndUserState state, final Set<Media> media) {
 824        if (state == RtpEndUserState.ENDING_CALL || isPictureInPicture()) {
 825            this.binding.rejectCall.setVisibility(View.INVISIBLE);
 826            this.binding.endCall.setVisibility(View.INVISIBLE);
 827            this.binding.acceptCall.setVisibility(View.INVISIBLE);
 828        } else if (state == RtpEndUserState.INCOMING_CALL) {
 829            this.binding.rejectCall.setContentDescription(getString(R.string.dismiss_call));
 830            this.binding.rejectCall.setOnClickListener(this::rejectCall);
 831            this.binding.rejectCall.setImageResource(R.drawable.ic_call_end_white_48dp);
 832            this.binding.rejectCall.setVisibility(View.VISIBLE);
 833            this.binding.endCall.setVisibility(View.INVISIBLE);
 834            this.binding.acceptCall.setContentDescription(getString(R.string.answer_call));
 835            this.binding.acceptCall.setOnClickListener(this::acceptCall);
 836            this.binding.acceptCall.setImageResource(R.drawable.ic_call_white_48dp);
 837            this.binding.acceptCall.setVisibility(View.VISIBLE);
 838        } else if (state == RtpEndUserState.DECLINED_OR_BUSY) {
 839            this.binding.rejectCall.setContentDescription(getString(R.string.exit));
 840            this.binding.rejectCall.setOnClickListener(this::exit);
 841            this.binding.rejectCall.setImageResource(R.drawable.ic_clear_white_48dp);
 842            this.binding.rejectCall.setVisibility(View.VISIBLE);
 843            this.binding.endCall.setVisibility(View.INVISIBLE);
 844            this.binding.acceptCall.setContentDescription(getString(R.string.record_voice_mail));
 845            this.binding.acceptCall.setOnClickListener(this::recordVoiceMail);
 846            this.binding.acceptCall.setImageResource(R.drawable.ic_voicemail_white_24dp);
 847            this.binding.acceptCall.setVisibility(View.VISIBLE);
 848        } else if (asList(
 849                RtpEndUserState.CONNECTIVITY_ERROR,
 850                RtpEndUserState.CONNECTIVITY_LOST_ERROR,
 851                RtpEndUserState.APPLICATION_ERROR,
 852                RtpEndUserState.RETRACTED,
 853                RtpEndUserState.SECURITY_ERROR
 854        ).contains(state)) {
 855            this.binding.rejectCall.setContentDescription(getString(R.string.exit));
 856            this.binding.rejectCall.setOnClickListener(this::exit);
 857            this.binding.rejectCall.setImageResource(R.drawable.ic_clear_white_48dp);
 858            this.binding.rejectCall.setVisibility(View.VISIBLE);
 859            this.binding.endCall.setVisibility(View.INVISIBLE);
 860            this.binding.acceptCall.setContentDescription(getString(R.string.try_again));
 861            this.binding.acceptCall.setOnClickListener(this::retry);
 862            this.binding.acceptCall.setImageResource(R.drawable.ic_replay_white_48dp);
 863            this.binding.acceptCall.setVisibility(View.VISIBLE);
 864        } else {
 865            this.binding.rejectCall.setVisibility(View.INVISIBLE);
 866            this.binding.endCall.setContentDescription(getString(R.string.hang_up));
 867            this.binding.endCall.setOnClickListener(this::endCall);
 868            this.binding.endCall.setImageResource(R.drawable.ic_call_end_white_48dp);
 869            this.binding.endCall.setVisibility(View.VISIBLE);
 870            this.binding.acceptCall.setVisibility(View.INVISIBLE);
 871        }
 872        updateInCallButtonConfiguration(state, media);
 873    }
 874
 875    private boolean isPictureInPicture() {
 876        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
 877            return isInPictureInPictureMode();
 878        } else {
 879            return false;
 880        }
 881    }
 882
 883    private void updateInCallButtonConfiguration() {
 884        updateInCallButtonConfiguration(requireRtpConnection().getEndUserState(), requireRtpConnection().getMedia());
 885    }
 886
 887    @SuppressLint("RestrictedApi")
 888    private void updateInCallButtonConfiguration(final RtpEndUserState state, final Set<Media> media) {
 889        if (STATES_CONSIDERED_CONNECTED.contains(state) && !isPictureInPicture()) {
 890            Preconditions.checkArgument(media.size() > 0, "Media must not be empty");
 891            if (media.contains(Media.VIDEO)) {
 892                final JingleRtpConnection rtpConnection = requireRtpConnection();
 893                updateInCallButtonConfigurationVideo(rtpConnection.isVideoEnabled(), rtpConnection.isCameraSwitchable());
 894            } else {
 895                final AppRTCAudioManager audioManager = requireRtpConnection().getAudioManager();
 896                updateInCallButtonConfigurationSpeaker(
 897                        audioManager.getSelectedAudioDevice(),
 898                        audioManager.getAudioDevices().size()
 899                );
 900                this.binding.inCallActionFarRight.setVisibility(View.GONE);
 901            }
 902            if (media.contains(Media.AUDIO)) {
 903                updateInCallButtonConfigurationMicrophone(requireRtpConnection().isMicrophoneEnabled());
 904            } else {
 905                this.binding.inCallActionLeft.setVisibility(View.GONE);
 906            }
 907        } else {
 908            this.binding.inCallActionLeft.setVisibility(View.GONE);
 909            this.binding.inCallActionRight.setVisibility(View.GONE);
 910            this.binding.inCallActionFarRight.setVisibility(View.GONE);
 911        }
 912    }
 913
 914    @SuppressLint("RestrictedApi")
 915    private void updateInCallButtonConfigurationSpeaker(final AppRTCAudioManager.AudioDevice selectedAudioDevice, final int numberOfChoices) {
 916        switch (selectedAudioDevice) {
 917            case EARPIECE:
 918                this.binding.inCallActionRight.setImageResource(R.drawable.ic_volume_off_black_24dp);
 919                if (numberOfChoices >= 2) {
 920                    this.binding.inCallActionRight.setOnClickListener(this::switchToSpeaker);
 921                } else {
 922                    this.binding.inCallActionRight.setOnClickListener(null);
 923                    this.binding.inCallActionRight.setClickable(false);
 924                }
 925                break;
 926            case WIRED_HEADSET:
 927                this.binding.inCallActionRight.setImageResource(R.drawable.ic_headset_black_24dp);
 928                this.binding.inCallActionRight.setOnClickListener(null);
 929                this.binding.inCallActionRight.setClickable(false);
 930                break;
 931            case SPEAKER_PHONE:
 932                this.binding.inCallActionRight.setImageResource(R.drawable.ic_volume_up_black_24dp);
 933                if (numberOfChoices >= 2) {
 934                    this.binding.inCallActionRight.setOnClickListener(this::switchToEarpiece);
 935                } else {
 936                    this.binding.inCallActionRight.setOnClickListener(null);
 937                    this.binding.inCallActionRight.setClickable(false);
 938                }
 939                break;
 940            case BLUETOOTH:
 941                this.binding.inCallActionRight.setImageResource(R.drawable.ic_bluetooth_audio_black_24dp);
 942                this.binding.inCallActionRight.setOnClickListener(null);
 943                this.binding.inCallActionRight.setClickable(false);
 944                break;
 945        }
 946        this.binding.inCallActionRight.setVisibility(View.VISIBLE);
 947    }
 948
 949    @SuppressLint("RestrictedApi")
 950    private void updateInCallButtonConfigurationVideo(final boolean videoEnabled, final boolean isCameraSwitchable) {
 951        this.binding.inCallActionRight.setVisibility(View.VISIBLE);
 952        if (isCameraSwitchable) {
 953            this.binding.inCallActionFarRight.setImageResource(R.drawable.ic_flip_camera_android_black_24dp);
 954            this.binding.inCallActionFarRight.setVisibility(View.VISIBLE);
 955            this.binding.inCallActionFarRight.setOnClickListener(this::switchCamera);
 956        } else {
 957            this.binding.inCallActionFarRight.setVisibility(View.GONE);
 958        }
 959        if (videoEnabled) {
 960            this.binding.inCallActionRight.setImageResource(R.drawable.ic_videocam_black_24dp);
 961            this.binding.inCallActionRight.setOnClickListener(this::disableVideo);
 962        } else {
 963            this.binding.inCallActionRight.setImageResource(R.drawable.ic_videocam_off_black_24dp);
 964            this.binding.inCallActionRight.setOnClickListener(this::enableVideo);
 965        }
 966    }
 967
 968    private void switchCamera(final View view) {
 969        Futures.addCallback(requireRtpConnection().switchCamera(), new FutureCallback<Boolean>() {
 970            @Override
 971            public void onSuccess(@NullableDecl Boolean isFrontCamera) {
 972                binding.localVideo.setMirror(isFrontCamera);
 973            }
 974
 975            @Override
 976            public void onFailure(@NonNull final Throwable throwable) {
 977                Log.d(Config.LOGTAG, "could not switch camera", Throwables.getRootCause(throwable));
 978                Toast.makeText(RtpSessionActivity.this, R.string.could_not_switch_camera, Toast.LENGTH_LONG).show();
 979            }
 980        }, MainThreadExecutor.getInstance());
 981    }
 982
 983    private void enableVideo(View view) {
 984        try {
 985            requireRtpConnection().setVideoEnabled(true);
 986        } catch (final IllegalStateException e) {
 987            Toast.makeText(this, R.string.unable_to_enable_video, Toast.LENGTH_SHORT).show();
 988            return;
 989        }
 990        updateInCallButtonConfigurationVideo(true, requireRtpConnection().isCameraSwitchable());
 991    }
 992
 993    private void disableVideo(View view) {
 994        requireRtpConnection().setVideoEnabled(false);
 995        updateInCallButtonConfigurationVideo(false, requireRtpConnection().isCameraSwitchable());
 996
 997    }
 998
 999    @SuppressLint("RestrictedApi")
1000    private void updateInCallButtonConfigurationMicrophone(final boolean microphoneEnabled) {
1001        if (microphoneEnabled) {
1002            this.binding.inCallActionLeft.setImageResource(R.drawable.ic_mic_black_24dp);
1003            this.binding.inCallActionLeft.setOnClickListener(this::disableMicrophone);
1004        } else {
1005            this.binding.inCallActionLeft.setImageResource(R.drawable.ic_mic_off_black_24dp);
1006            this.binding.inCallActionLeft.setOnClickListener(this::enableMicrophone);
1007        }
1008        this.binding.inCallActionLeft.setVisibility(View.VISIBLE);
1009    }
1010
1011    private void updateCallDuration() {
1012        final JingleRtpConnection connection = this.rtpConnectionReference != null ? this.rtpConnectionReference.get() : null;
1013        if (connection == null || connection.getMedia().contains(Media.VIDEO)) {
1014            this.binding.duration.setVisibility(View.GONE);
1015            return;
1016        }
1017        if (connection.zeroDuration()) {
1018            this.binding.duration.setVisibility(View.GONE);
1019        } else {
1020            this.binding.duration.setText(TimeFrameUtils.formatElapsedTime(connection.getCallDuration(), false));
1021            this.binding.duration.setVisibility(View.VISIBLE);
1022        }
1023    }
1024
1025    private void updateVideoViews(final RtpEndUserState state) {
1026        if (END_CARD.contains(state) || state == RtpEndUserState.ENDING_CALL) {
1027            binding.localVideo.setVisibility(View.GONE);
1028            binding.localVideo.release();
1029            binding.remoteVideoWrapper.setVisibility(View.GONE);
1030            binding.remoteVideo.release();
1031            binding.pipLocalMicOffIndicator.setVisibility(View.GONE);
1032            if (isPictureInPicture()) {
1033                binding.appBarLayout.setVisibility(View.GONE);
1034                binding.pipPlaceholder.setVisibility(View.VISIBLE);
1035                if (Arrays.asList(
1036                        RtpEndUserState.APPLICATION_ERROR,
1037                        RtpEndUserState.CONNECTIVITY_ERROR,
1038                        RtpEndUserState.SECURITY_ERROR)
1039                        .contains(state)) {
1040                    binding.pipWarning.setVisibility(View.VISIBLE);
1041                    binding.pipWaiting.setVisibility(View.GONE);
1042                } else {
1043                    binding.pipWarning.setVisibility(View.GONE);
1044                    binding.pipWaiting.setVisibility(View.GONE);
1045                }
1046            } else {
1047                binding.appBarLayout.setVisibility(View.VISIBLE);
1048                binding.pipPlaceholder.setVisibility(View.GONE);
1049            }
1050            getWindow().clearFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
1051            return;
1052        }
1053        if (isPictureInPicture() && STATES_SHOWING_PIP_PLACEHOLDER.contains(state)) {
1054            binding.localVideo.setVisibility(View.GONE);
1055            binding.remoteVideoWrapper.setVisibility(View.GONE);
1056            binding.appBarLayout.setVisibility(View.GONE);
1057            binding.pipPlaceholder.setVisibility(View.VISIBLE);
1058            binding.pipWarning.setVisibility(View.GONE);
1059            binding.pipWaiting.setVisibility(View.VISIBLE);
1060            binding.pipLocalMicOffIndicator.setVisibility(View.GONE);
1061            return;
1062        }
1063        final Optional<VideoTrack> localVideoTrack = getLocalVideoTrack();
1064        if (localVideoTrack.isPresent() && !isPictureInPicture()) {
1065            ensureSurfaceViewRendererIsSetup(binding.localVideo);
1066            //paint local view over remote view
1067            binding.localVideo.setZOrderMediaOverlay(true);
1068            binding.localVideo.setMirror(requireRtpConnection().isFrontCamera());
1069            addSink(localVideoTrack.get(), binding.localVideo);
1070        } else {
1071            binding.localVideo.setVisibility(View.GONE);
1072        }
1073        final Optional<VideoTrack> remoteVideoTrack = getRemoteVideoTrack();
1074        if (remoteVideoTrack.isPresent()) {
1075            ensureSurfaceViewRendererIsSetup(binding.remoteVideo);
1076            addSink(remoteVideoTrack.get(), binding.remoteVideo);
1077            binding.remoteVideo.setScalingType(
1078                    RendererCommon.ScalingType.SCALE_ASPECT_FILL,
1079                    RendererCommon.ScalingType.SCALE_ASPECT_FIT
1080            );
1081            if (state == RtpEndUserState.CONNECTED) {
1082                binding.appBarLayout.setVisibility(View.GONE);
1083                getWindow().addFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
1084                binding.remoteVideoWrapper.setVisibility(View.VISIBLE);
1085            } else {
1086                binding.appBarLayout.setVisibility(View.VISIBLE);
1087                getWindow().clearFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
1088                binding.remoteVideoWrapper.setVisibility(View.GONE);
1089            }
1090            if (isPictureInPicture() && !requireRtpConnection().isMicrophoneEnabled()) {
1091                binding.pipLocalMicOffIndicator.setVisibility(View.VISIBLE);
1092            } else {
1093                binding.pipLocalMicOffIndicator.setVisibility(View.GONE);
1094            }
1095        } else {
1096            getWindow().clearFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
1097            binding.remoteVideoWrapper.setVisibility(View.GONE);
1098            binding.pipLocalMicOffIndicator.setVisibility(View.GONE);
1099        }
1100    }
1101
1102    private Optional<VideoTrack> getLocalVideoTrack() {
1103        final JingleRtpConnection connection = this.rtpConnectionReference != null ? this.rtpConnectionReference.get() : null;
1104        if (connection == null) {
1105            return Optional.absent();
1106        }
1107        return connection.getLocalVideoTrack();
1108    }
1109
1110    private Optional<VideoTrack> getRemoteVideoTrack() {
1111        final JingleRtpConnection connection = this.rtpConnectionReference != null ? this.rtpConnectionReference.get() : null;
1112        if (connection == null) {
1113            return Optional.absent();
1114        }
1115        return connection.getRemoteVideoTrack();
1116    }
1117
1118    private void disableMicrophone(View view) {
1119        final JingleRtpConnection rtpConnection = requireRtpConnection();
1120        if (rtpConnection.setMicrophoneEnabled(false)) {
1121            updateInCallButtonConfiguration();
1122        }
1123    }
1124
1125    private void enableMicrophone(View view) {
1126        final JingleRtpConnection rtpConnection = requireRtpConnection();
1127        if (rtpConnection.setMicrophoneEnabled(true)) {
1128            updateInCallButtonConfiguration();
1129        }
1130    }
1131
1132    private void switchToEarpiece(View view) {
1133        requireRtpConnection().getAudioManager().setDefaultAudioDevice(AppRTCAudioManager.AudioDevice.EARPIECE);
1134        acquireProximityWakeLock();
1135    }
1136
1137    private void switchToSpeaker(View view) {
1138        requireRtpConnection().getAudioManager().setDefaultAudioDevice(AppRTCAudioManager.AudioDevice.SPEAKER_PHONE);
1139        releaseProximityWakeLock();
1140    }
1141
1142    private void retry(View view) {
1143        final Intent intent = getIntent();
1144        final Account account = extractAccount(intent);
1145        final Jid with = Jid.ofEscaped(intent.getStringExtra(EXTRA_WITH));
1146        final String lastAction = intent.getStringExtra(EXTRA_LAST_ACTION);
1147        final String action = intent.getAction();
1148        final Set<Media> media = actionToMedia(lastAction == null ? action : lastAction);
1149        this.rtpConnectionReference = null;
1150        Log.d(Config.LOGTAG, "attempting retry with " + with.toEscapedString());
1151        proposeJingleRtpSession(account, with, media);
1152    }
1153
1154    private void exit(final View view) {
1155        finish();
1156    }
1157
1158    private void recordVoiceMail(final View view) {
1159        final Intent intent = getIntent();
1160        final Account account = extractAccount(intent);
1161        final Jid with = Jid.ofEscaped(intent.getStringExtra(EXTRA_WITH));
1162        final Conversation conversation = xmppConnectionService.findOrCreateConversation(account, with, false, true);
1163        final Intent launchIntent = new Intent(this, ConversationsActivity.class);
1164        launchIntent.setAction(ConversationsActivity.ACTION_VIEW_CONVERSATION);
1165        launchIntent.putExtra(ConversationsActivity.EXTRA_CONVERSATION, conversation.getUuid());
1166        launchIntent.setFlags(intent.getFlags() | Intent.FLAG_ACTIVITY_CLEAR_TOP);
1167        launchIntent.putExtra(ConversationsActivity.EXTRA_POST_INIT_ACTION, ConversationsActivity.POST_ACTION_RECORD_VOICE);
1168        startActivity(launchIntent);
1169        finish();
1170    }
1171
1172    private Contact getWith() {
1173        final AbstractJingleConnection.Id id = requireRtpConnection().getId();
1174        final Account account = id.account;
1175        return account.getRoster().getContact(id.with);
1176    }
1177
1178    private JingleRtpConnection requireRtpConnection() {
1179        final JingleRtpConnection connection = this.rtpConnectionReference != null ? this.rtpConnectionReference.get() : null;
1180        if (connection == null) {
1181            throw new IllegalStateException("No RTP connection found");
1182        }
1183        return connection;
1184    }
1185
1186    @Override
1187    public void onJingleRtpConnectionUpdate(Account account, Jid with, final String sessionId, RtpEndUserState state) {
1188        Log.d(Config.LOGTAG, "onJingleRtpConnectionUpdate(" + state + ")");
1189        if (state == RtpEndUserState.CONNECTED) {
1190            activateConnectionBinder();
1191        }
1192        if (END_CARD.contains(state)) {
1193            Log.d(Config.LOGTAG, "end card reached");
1194            releaseProximityWakeLock();
1195            runOnUiThread(() -> getWindow().clearFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON));
1196            disconnectConnectionBinder();
1197        }
1198        if (with.isBareJid()) {
1199            updateRtpSessionProposalState(account, with, state);
1200            return;
1201        }
1202        if (emptyReference(this.rtpConnectionReference)) {
1203            if (END_CARD.contains(state)) {
1204                Log.d(Config.LOGTAG, "not reinitializing session");
1205                return;
1206            }
1207            //this happens when going from proposed session to actual session
1208            reInitializeActivityWithRunningRtpSession(account, with, sessionId);
1209            return;
1210        }
1211        final AbstractJingleConnection.Id id = requireRtpConnection().getId();
1212        final boolean verified = requireRtpConnection().isVerified();
1213        final Set<Media> media = getMedia();
1214        final Contact contact = getWith();
1215        if (account == id.account && id.with.equals(with) && id.sessionId.equals(sessionId)) {
1216            if (state == RtpEndUserState.ENDED) {
1217                finish();
1218                return;
1219            }
1220            runOnUiThread(() -> {
1221                updateStateDisplay(state, media);
1222                updateVerifiedShield(verified && STATES_SHOWING_SWITCH_TO_CHAT.contains(state));
1223                updateButtonConfiguration(state, media);
1224                updateVideoViews(state);
1225                updateProfilePicture(state, contact);
1226                invalidateOptionsMenu();
1227            });
1228            if (END_CARD.contains(state)) {
1229                final JingleRtpConnection rtpConnection = requireRtpConnection();
1230                resetIntent(account, with, state, rtpConnection.getMedia());
1231                releaseVideoTracks(rtpConnection);
1232                this.rtpConnectionReference = null;
1233            }
1234        } else {
1235            Log.d(Config.LOGTAG, "received update for other rtp session");
1236        }
1237    }
1238
1239    @Override
1240    public void onAudioDeviceChanged(AppRTCAudioManager.AudioDevice selectedAudioDevice, Set<AppRTCAudioManager.AudioDevice> availableAudioDevices) {
1241        Log.d(Config.LOGTAG, "onAudioDeviceChanged in activity: selected:" + selectedAudioDevice + ", available:" + availableAudioDevices);
1242        try {
1243            if (getMedia().contains(Media.VIDEO)) {
1244                Log.d(Config.LOGTAG, "nothing to do; in video mode");
1245                return;
1246            }
1247            final RtpEndUserState endUserState = requireRtpConnection().getEndUserState();
1248            if (endUserState == RtpEndUserState.CONNECTED) {
1249                final AppRTCAudioManager audioManager = requireRtpConnection().getAudioManager();
1250                updateInCallButtonConfigurationSpeaker(
1251                        audioManager.getSelectedAudioDevice(),
1252                        audioManager.getAudioDevices().size()
1253                );
1254            } else if (END_CARD.contains(endUserState)) {
1255                Log.d(Config.LOGTAG, "onAudioDeviceChanged() nothing to do because end card has been reached");
1256            } else {
1257                putProximityWakeLockInProperState(selectedAudioDevice);
1258            }
1259        } catch (IllegalStateException e) {
1260            Log.d(Config.LOGTAG, "RTP connection was not available when audio device changed");
1261        }
1262    }
1263
1264    @Override
1265    protected void onSaveInstanceState(@NonNull @NotNull Bundle outState) {
1266        super.onSaveInstanceState(outState);
1267        outState.putBoolean("dialpad_visible", binding.dialpad.getVisibility() == View.VISIBLE);
1268    }
1269
1270    private void updateRtpSessionProposalState(final Account account, final Jid with, final RtpEndUserState state) {
1271        final Intent currentIntent = getIntent();
1272        final String withExtra = currentIntent == null ? null : currentIntent.getStringExtra(EXTRA_WITH);
1273        if (withExtra == null) {
1274            return;
1275        }
1276        if (Jid.ofEscaped(withExtra).asBareJid().equals(with)) {
1277            runOnUiThread(() -> {
1278                updateVerifiedShield(false);
1279                updateStateDisplay(state);
1280                updateButtonConfiguration(state);
1281                updateProfilePicture(state);
1282                invalidateOptionsMenu();
1283            });
1284            resetIntent(account, with, state, actionToMedia(currentIntent.getAction()));
1285        }
1286    }
1287
1288    private void resetIntent(final Bundle extras) {
1289        final Intent intent = new Intent(Intent.ACTION_VIEW);
1290        intent.putExtras(extras);
1291        setIntent(intent);
1292    }
1293
1294    private void resetIntent(final Account account, Jid with, final RtpEndUserState state, final Set<Media> media) {
1295        final Intent intent = new Intent(Intent.ACTION_VIEW);
1296        intent.putExtra(EXTRA_ACCOUNT, account.getJid().toEscapedString());
1297        if (account.getRoster().getContact(with).getPresences().anySupport(Namespace.JINGLE_MESSAGE)) {
1298            intent.putExtra(EXTRA_WITH, with.asBareJid().toEscapedString());
1299        } else {
1300            intent.putExtra(EXTRA_WITH, with.toEscapedString());
1301        }
1302        intent.putExtra(EXTRA_LAST_REPORTED_STATE, state.toString());
1303        intent.putExtra(EXTRA_LAST_ACTION, media.contains(Media.VIDEO) ? ACTION_MAKE_VIDEO_CALL : ACTION_MAKE_VOICE_CALL);
1304        setIntent(intent);
1305    }
1306
1307    private static boolean emptyReference(final WeakReference<?> weakReference) {
1308        return weakReference == null || weakReference.get() == null;
1309    }
1310}