RtpSessionActivity.java

   1package eu.siacs.conversations.ui;
   2
   3import static eu.siacs.conversations.utils.PermissionUtils.getFirstDenied;
   4
   5import static java.util.Arrays.asList;
   6
   7import android.Manifest;
   8import android.annotation.SuppressLint;
   9import android.app.Activity;
  10import android.app.PictureInPictureParams;
  11import android.content.ActivityNotFoundException;
  12import android.content.Context;
  13import android.content.Intent;
  14import android.content.pm.ActivityInfo;
  15import android.content.pm.PackageManager;
  16import android.os.Build;
  17import android.os.Bundle;
  18import android.os.Handler;
  19import android.os.PowerManager;
  20import android.os.SystemClock;
  21import android.util.Log;
  22import android.util.Rational;
  23import android.view.KeyEvent;
  24import android.view.Menu;
  25import android.view.MenuItem;
  26import android.view.View;
  27import android.view.WindowManager;
  28import android.widget.Toast;
  29
  30import androidx.annotation.NonNull;
  31import androidx.annotation.Nullable;
  32import androidx.annotation.RequiresApi;
  33import androidx.annotation.StringRes;
  34import androidx.databinding.DataBindingUtil;
  35
  36import com.google.common.base.Optional;
  37import com.google.common.base.Preconditions;
  38import com.google.common.base.Throwables;
  39import com.google.common.collect.ImmutableList;
  40import com.google.common.collect.ImmutableSet;
  41import com.google.common.util.concurrent.FutureCallback;
  42import com.google.common.util.concurrent.Futures;
  43
  44import eu.siacs.conversations.Config;
  45import eu.siacs.conversations.R;
  46import eu.siacs.conversations.databinding.ActivityRtpSessionBinding;
  47import eu.siacs.conversations.entities.Account;
  48import eu.siacs.conversations.entities.Contact;
  49import eu.siacs.conversations.entities.Conversation;
  50import eu.siacs.conversations.services.AppRTCAudioManager;
  51import eu.siacs.conversations.services.XmppConnectionService;
  52import eu.siacs.conversations.ui.util.AvatarWorkerTask;
  53import eu.siacs.conversations.ui.util.MainThreadExecutor;
  54import eu.siacs.conversations.ui.util.Rationals;
  55import eu.siacs.conversations.utils.PermissionUtils;
  56import eu.siacs.conversations.utils.TimeFrameUtils;
  57import eu.siacs.conversations.xmpp.Jid;
  58import eu.siacs.conversations.xmpp.jingle.AbstractJingleConnection;
  59import eu.siacs.conversations.xmpp.jingle.ContentAddition;
  60import eu.siacs.conversations.xmpp.jingle.JingleConnectionManager;
  61import eu.siacs.conversations.xmpp.jingle.JingleRtpConnection;
  62import eu.siacs.conversations.xmpp.jingle.Media;
  63import eu.siacs.conversations.xmpp.jingle.RtpCapability;
  64import eu.siacs.conversations.xmpp.jingle.RtpEndUserState;
  65
  66import org.webrtc.RendererCommon;
  67import org.webrtc.SurfaceViewRenderer;
  68import org.webrtc.VideoTrack;
  69
  70import java.lang.ref.WeakReference;
  71import java.util.Arrays;
  72import java.util.Collections;
  73import java.util.List;
  74import java.util.Set;
  75
  76public class RtpSessionActivity extends XmppActivity
  77        implements XmppConnectionService.OnJingleRtpConnectionUpdate,
  78                eu.siacs.conversations.ui.widget.SurfaceViewRenderer.OnAspectRatioChanged {
  79
  80    public static final String EXTRA_WITH = "with";
  81    public static final String EXTRA_SESSION_ID = "session_id";
  82    public static final String EXTRA_LAST_REPORTED_STATE = "last_reported_state";
  83    public static final String EXTRA_LAST_ACTION = "last_action";
  84    public static final String ACTION_ACCEPT_CALL = "action_accept_call";
  85    public static final String ACTION_MAKE_VOICE_CALL = "action_make_voice_call";
  86    public static final String ACTION_MAKE_VIDEO_CALL = "action_make_video_call";
  87
  88    private static final int CALL_DURATION_UPDATE_INTERVAL = 333;
  89
  90    private static final List<RtpEndUserState> END_CARD =
  91            Arrays.asList(
  92                    RtpEndUserState.APPLICATION_ERROR,
  93                    RtpEndUserState.SECURITY_ERROR,
  94                    RtpEndUserState.DECLINED_OR_BUSY,
  95                    RtpEndUserState.CONNECTIVITY_ERROR,
  96                    RtpEndUserState.CONNECTIVITY_LOST_ERROR,
  97                    RtpEndUserState.RETRACTED);
  98    private static final List<RtpEndUserState> STATES_SHOWING_HELP_BUTTON =
  99            Arrays.asList(
 100                    RtpEndUserState.APPLICATION_ERROR,
 101                    RtpEndUserState.CONNECTIVITY_ERROR,
 102                    RtpEndUserState.SECURITY_ERROR);
 103    private static final List<RtpEndUserState> STATES_SHOWING_SWITCH_TO_CHAT =
 104            Arrays.asList(
 105                    RtpEndUserState.CONNECTING,
 106                    RtpEndUserState.CONNECTED,
 107                    RtpEndUserState.RECONNECTING,
 108                    RtpEndUserState.INCOMING_CONTENT_ADD);
 109    private static final List<RtpEndUserState> STATES_CONSIDERED_CONNECTED =
 110            Arrays.asList(RtpEndUserState.CONNECTED, RtpEndUserState.RECONNECTING);
 111    private static final List<RtpEndUserState> STATES_SHOWING_PIP_PLACEHOLDER =
 112            Arrays.asList(
 113                    RtpEndUserState.ACCEPTING_CALL,
 114                    RtpEndUserState.CONNECTING,
 115                    RtpEndUserState.RECONNECTING);
 116    private static final String PROXIMITY_WAKE_LOCK_TAG = "conversations:in-rtp-session";
 117    private static final int REQUEST_ACCEPT_CALL = 0x1111;
 118    private static final int REQUEST_ACCEPT_CONTENT = 0x1112;
 119    private static final int REQUEST_ADD_CONTENT = 0x1113;
 120    private WeakReference<JingleRtpConnection> rtpConnectionReference;
 121
 122    private ActivityRtpSessionBinding binding;
 123    private PowerManager.WakeLock mProximityWakeLock;
 124
 125    private final Handler mHandler = new Handler();
 126    private final Runnable mTickExecutor =
 127            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(
 144            final VideoTrack videoTrack, final SurfaceViewRenderer surfaceViewRenderer) {
 145        try {
 146            videoTrack.addSink(surfaceViewRenderer);
 147        } catch (final IllegalStateException e) {
 148            Log.e(
 149                    Config.LOGTAG,
 150                    "possible race condition on trying to display video track. ignoring",
 151                    e);
 152        }
 153    }
 154
 155    @Override
 156    public void onCreate(Bundle savedInstanceState) {
 157        super.onCreate(savedInstanceState);
 158        getWindow()
 159                .addFlags(
 160                        WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON
 161                                | WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD
 162                                | WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED
 163                                | WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON);
 164        this.binding = DataBindingUtil.setContentView(this, R.layout.activity_rtp_session);
 165        setSupportActionBar(binding.toolbar);
 166    }
 167
 168    @Override
 169    public boolean onCreateOptionsMenu(final Menu menu) {
 170        getMenuInflater().inflate(R.menu.activity_rtp_session, menu);
 171        final MenuItem help = menu.findItem(R.id.action_help);
 172        final MenuItem gotoChat = menu.findItem(R.id.action_goto_chat);
 173        final MenuItem switchToVideo = menu.findItem(R.id.action_switch_to_video);
 174        help.setVisible(Config.HELP != null && isHelpButtonVisible());
 175        gotoChat.setVisible(isSwitchToConversationVisible());
 176        switchToVideo.setVisible(isSwitchToVideoVisible());
 177        return super.onCreateOptionsMenu(menu);
 178    }
 179
 180    @Override
 181    public boolean onKeyDown(final int keyCode, final KeyEvent event) {
 182        if (keyCode == KeyEvent.KEYCODE_VOLUME_DOWN) {
 183            if (xmppConnectionService != null) {
 184                if (xmppConnectionService.getNotificationService().stopSoundAndVibration()) {
 185                    return true;
 186                }
 187            }
 188        }
 189        return super.onKeyDown(keyCode, event);
 190    }
 191
 192    private boolean isHelpButtonVisible() {
 193        try {
 194            return STATES_SHOWING_HELP_BUTTON.contains(requireRtpConnection().getEndUserState());
 195        } catch (IllegalStateException e) {
 196            final Intent intent = getIntent();
 197            final String state =
 198                    intent != null ? intent.getStringExtra(EXTRA_LAST_REPORTED_STATE) : null;
 199            if (state != null) {
 200                return STATES_SHOWING_HELP_BUTTON.contains(RtpEndUserState.valueOf(state));
 201            } else {
 202                return false;
 203            }
 204        }
 205    }
 206
 207    private boolean isSwitchToConversationVisible() {
 208        final JingleRtpConnection connection =
 209                this.rtpConnectionReference != null ? this.rtpConnectionReference.get() : null;
 210        return connection != null
 211                && STATES_SHOWING_SWITCH_TO_CHAT.contains(connection.getEndUserState());
 212    }
 213
 214    private boolean isSwitchToVideoVisible() {
 215        final JingleRtpConnection connection =
 216                this.rtpConnectionReference != null ? this.rtpConnectionReference.get() : null;
 217        if (connection == null) {
 218            return false;
 219        }
 220        return connection.isSwitchToVideoAvailable();
 221    }
 222
 223    private void switchToConversation() {
 224        final Contact contact = getWith();
 225        final Conversation conversation =
 226                xmppConnectionService.findOrCreateConversation(
 227                        contact.getAccount(), contact.getJid(), false, true);
 228        switchToConversation(conversation);
 229    }
 230
 231    public boolean onOptionsItemSelected(final MenuItem item) {
 232        final var itemItem = item.getItemId();
 233        if (itemItem == R.id.action_help) {
 234            launchHelpInBrowser();
 235            return true;
 236        } else if (itemItem == R.id.action_goto_chat) {
 237            switchToConversation();
 238            return true;
 239        } else if (itemItem == R.id.action_switch_to_video) {
 240            requestPermissionAndSwitchToVideo();
 241            return true;
 242        } else {
 243            return super.onOptionsItemSelected(item);
 244        }
 245    }
 246
 247    private void launchHelpInBrowser() {
 248        final Intent intent = new Intent(Intent.ACTION_VIEW, Config.HELP);
 249        try {
 250            startActivity(intent);
 251        } catch (final ActivityNotFoundException e) {
 252            Toast.makeText(this, R.string.no_application_found_to_open_link, Toast.LENGTH_LONG)
 253                    .show();
 254        }
 255    }
 256
 257    private void endCall(View view) {
 258        endCall();
 259    }
 260
 261    private void endCall() {
 262        if (this.rtpConnectionReference == null) {
 263            retractSessionProposal();
 264            finish();
 265        } else {
 266            requireRtpConnection().endCall();
 267        }
 268    }
 269
 270    private void retractSessionProposal() {
 271        final Intent intent = getIntent();
 272        final String action = intent.getAction();
 273        final Account account = extractAccount(intent);
 274        final Jid with = Jid.ofEscaped(intent.getStringExtra(EXTRA_WITH));
 275        final String state = intent.getStringExtra(EXTRA_LAST_REPORTED_STATE);
 276        if (!Intent.ACTION_VIEW.equals(action)
 277                || state == null
 278                || !END_CARD.contains(RtpEndUserState.valueOf(state))) {
 279            resetIntent(
 280                    account, with, RtpEndUserState.RETRACTED, actionToMedia(intent.getAction()));
 281        }
 282        xmppConnectionService
 283                .getJingleConnectionManager()
 284                .retractSessionProposal(account, with.asBareJid());
 285    }
 286
 287    private void rejectCall(View view) {
 288        requireRtpConnection().rejectCall();
 289        finish();
 290    }
 291
 292    private void acceptCall(View view) {
 293        requestPermissionsAndAcceptCall();
 294    }
 295
 296    private void acceptContentAdd() {
 297        try {
 298            requireRtpConnection()
 299                    .acceptContentAdd(requireRtpConnection().getPendingContentAddition().summary);
 300        } catch (final IllegalStateException e) {
 301            Toast.makeText(this, e.getMessage(), Toast.LENGTH_SHORT).show();
 302        }
 303    }
 304
 305    private void requestPermissionAndSwitchToVideo() {
 306        final List<String> permissions = permissions(ImmutableSet.of(Media.VIDEO, Media.AUDIO));
 307        if (PermissionUtils.hasPermission(this, permissions, REQUEST_ADD_CONTENT)) {
 308            switchToVideo();
 309        }
 310    }
 311
 312    private void switchToVideo() {
 313        try {
 314            requireRtpConnection().addMedia(Media.VIDEO);
 315        } catch (final IllegalStateException e) {
 316            Toast.makeText(this, e.getMessage(), Toast.LENGTH_SHORT).show();
 317        }
 318    }
 319
 320    private void acceptContentAdd(final ContentAddition contentAddition) {
 321        if (contentAddition == null
 322                || contentAddition.direction != ContentAddition.Direction.INCOMING) {
 323            Log.d(Config.LOGTAG, "ignore press on content-accept button");
 324            return;
 325        }
 326        requestPermissionAndAcceptContentAdd(contentAddition);
 327    }
 328
 329    private void requestPermissionAndAcceptContentAdd(final ContentAddition contentAddition) {
 330        final List<String> permissions = permissions(contentAddition.media());
 331        if (PermissionUtils.hasPermission(this, permissions, REQUEST_ACCEPT_CONTENT)) {
 332            try {
 333                requireRtpConnection().acceptContentAdd(contentAddition.summary);
 334            } catch (final IllegalStateException e) {
 335                Toast.makeText(this, e.getMessage(), Toast.LENGTH_SHORT).show();
 336            }
 337        }
 338    }
 339
 340    private void rejectContentAdd(final View view) {
 341        requireRtpConnection().rejectContentAdd();
 342    }
 343
 344    private void requestPermissionsAndAcceptCall() {
 345        final List<String> permissions = permissions(getMedia());
 346        if (PermissionUtils.hasPermission(this, permissions, REQUEST_ACCEPT_CALL)) {
 347            putScreenInCallMode();
 348            checkRecorderAndAcceptCall();
 349        }
 350    }
 351
 352    private List<String> permissions(final Set<Media> media) {
 353        final ImmutableList.Builder<String> permissions = ImmutableList.builder();
 354        if (media.contains(Media.VIDEO)) {
 355            permissions.add(Manifest.permission.CAMERA).add(Manifest.permission.RECORD_AUDIO);
 356        } else {
 357            permissions.add(Manifest.permission.RECORD_AUDIO);
 358        }
 359        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S) {
 360            permissions.add(Manifest.permission.BLUETOOTH_CONNECT);
 361        }
 362        return permissions.build();
 363    }
 364
 365    private void checkRecorderAndAcceptCall() {
 366        checkMicrophoneAvailabilityAsync();
 367        try {
 368            requireRtpConnection().acceptCall();
 369        } catch (final IllegalStateException e) {
 370            Toast.makeText(this, e.getMessage(), Toast.LENGTH_SHORT).show();
 371        }
 372    }
 373
 374    private void checkMicrophoneAvailabilityAsync() {
 375        new Thread(new MicrophoneAvailabilityCheck(this)).start();
 376    }
 377
 378    private static class MicrophoneAvailabilityCheck implements Runnable {
 379
 380        private final WeakReference<Activity> activityReference;
 381
 382        private MicrophoneAvailabilityCheck(final Activity activity) {
 383            this.activityReference = new WeakReference<>(activity);
 384        }
 385
 386        @Override
 387        public void run() {
 388            final long start = SystemClock.elapsedRealtime();
 389            final boolean isMicrophoneAvailable = AppRTCAudioManager.isMicrophoneAvailable();
 390            final long stop = SystemClock.elapsedRealtime();
 391            Log.d(Config.LOGTAG, "checking microphone availability took " + (stop - start) + "ms");
 392            if (isMicrophoneAvailable) {
 393                return;
 394            }
 395            final Activity activity = activityReference.get();
 396            if (activity == null) {
 397                return;
 398            }
 399            activity.runOnUiThread(
 400                    () ->
 401                            Toast.makeText(
 402                                            activity,
 403                                            R.string.microphone_unavailable,
 404                                            Toast.LENGTH_LONG)
 405                                    .show());
 406        }
 407    }
 408
 409    private void putScreenInCallMode() {
 410        putScreenInCallMode(requireRtpConnection().getMedia());
 411    }
 412
 413    private void putScreenInCallMode(final Set<Media> media) {
 414        getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
 415        if (Media.audioOnly(media)) {
 416            final JingleRtpConnection rtpConnection =
 417                    rtpConnectionReference != null ? rtpConnectionReference.get() : null;
 418            final AppRTCAudioManager audioManager =
 419                    rtpConnection == null ? null : rtpConnection.getAudioManager();
 420            if (audioManager == null
 421                    || audioManager.getSelectedAudioDevice()
 422                            == AppRTCAudioManager.AudioDevice.EARPIECE) {
 423                acquireProximityWakeLock();
 424            }
 425        }
 426        lockOrientation(media);
 427    }
 428
 429    private void lockOrientation(final Set<Media> media) {
 430        if (Media.audioOnly(media)) {
 431            setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
 432        } else {
 433            setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED);
 434        }
 435    }
 436
 437    @SuppressLint("WakelockTimeout")
 438    private void acquireProximityWakeLock() {
 439        final PowerManager powerManager = (PowerManager) getSystemService(Context.POWER_SERVICE);
 440        if (powerManager == null) {
 441            Log.e(Config.LOGTAG, "power manager not available");
 442            return;
 443        }
 444        if (isFinishing()) {
 445            Log.e(Config.LOGTAG, "do not acquire wakelock. activity is finishing");
 446            return;
 447        }
 448        if (this.mProximityWakeLock == null) {
 449            this.mProximityWakeLock =
 450                    powerManager.newWakeLock(
 451                            PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK, PROXIMITY_WAKE_LOCK_TAG);
 452        }
 453        if (!this.mProximityWakeLock.isHeld()) {
 454            Log.d(Config.LOGTAG, "acquiring proximity wake lock");
 455            this.mProximityWakeLock.acquire();
 456        }
 457    }
 458
 459    private void releaseProximityWakeLock() {
 460        if (this.mProximityWakeLock != null && mProximityWakeLock.isHeld()) {
 461            Log.d(Config.LOGTAG, "releasing proximity wake lock");
 462            this.mProximityWakeLock.release(PowerManager.RELEASE_FLAG_WAIT_FOR_NO_PROXIMITY);
 463            this.mProximityWakeLock = null;
 464        }
 465    }
 466
 467    private void putProximityWakeLockInProperState(
 468            final AppRTCAudioManager.AudioDevice audioDevice) {
 469        if (audioDevice == AppRTCAudioManager.AudioDevice.EARPIECE) {
 470            acquireProximityWakeLock();
 471        } else {
 472            releaseProximityWakeLock();
 473        }
 474    }
 475
 476    @Override
 477    protected void refreshUiReal() {}
 478
 479    @Override
 480    public void onNewIntent(final Intent intent) {
 481        Log.d(Config.LOGTAG, this.getClass().getName() + ".onNewIntent()");
 482        super.onNewIntent(intent);
 483        setIntent(intent);
 484        if (xmppConnectionService == null) {
 485            Log.d(
 486                    Config.LOGTAG,
 487                    "RtpSessionActivity: background service wasn't bound in onNewIntent()");
 488            return;
 489        }
 490        final Account account = extractAccount(intent);
 491        final String action = intent.getAction();
 492        final Jid with = Jid.ofEscaped(intent.getStringExtra(EXTRA_WITH));
 493        final String sessionId = intent.getStringExtra(EXTRA_SESSION_ID);
 494        if (sessionId != null) {
 495            Log.d(Config.LOGTAG, "reinitializing from onNewIntent()");
 496            if (initializeActivityWithRunningRtpSession(account, with, sessionId)) {
 497                return;
 498            }
 499            if (ACTION_ACCEPT_CALL.equals(intent.getAction())) {
 500                Log.d(Config.LOGTAG, "accepting call from onNewIntent()");
 501                requestPermissionsAndAcceptCall();
 502                resetIntent(intent.getExtras());
 503            }
 504        } else if (asList(ACTION_MAKE_VIDEO_CALL, ACTION_MAKE_VOICE_CALL).contains(action)) {
 505            proposeJingleRtpSession(account, with, actionToMedia(action));
 506            setWith(account.getRoster().getContact(with), null);
 507        } else {
 508            throw new IllegalStateException("received onNewIntent without sessionId");
 509        }
 510    }
 511
 512    @Override
 513    void onBackendConnected() {
 514        final Intent intent = getIntent();
 515        final String action = intent.getAction();
 516        final Account account = extractAccount(intent);
 517        final Jid with = Jid.ofEscaped(intent.getStringExtra(EXTRA_WITH));
 518        final String sessionId = intent.getStringExtra(EXTRA_SESSION_ID);
 519        if (sessionId != null) {
 520            if (initializeActivityWithRunningRtpSession(account, with, sessionId)) {
 521                return;
 522            }
 523            if (ACTION_ACCEPT_CALL.equals(intent.getAction())) {
 524                Log.d(Config.LOGTAG, "intent action was accept");
 525                requestPermissionsAndAcceptCall();
 526                resetIntent(intent.getExtras());
 527            }
 528        } else if (asList(ACTION_MAKE_VIDEO_CALL, ACTION_MAKE_VOICE_CALL).contains(action)) {
 529            proposeJingleRtpSession(account, with, actionToMedia(action));
 530            setWith(account.getRoster().getContact(with), null);
 531        } else if (Intent.ACTION_VIEW.equals(action)) {
 532            final String extraLastState = intent.getStringExtra(EXTRA_LAST_REPORTED_STATE);
 533            final RtpEndUserState state =
 534                    extraLastState == null ? null : RtpEndUserState.valueOf(extraLastState);
 535            if (state != null) {
 536                Log.d(Config.LOGTAG, "restored last state from intent extra");
 537                updateButtonConfiguration(state);
 538                updateVerifiedShield(false);
 539                updateStateDisplay(state);
 540                updateIncomingCallScreen(state);
 541                invalidateOptionsMenu();
 542            }
 543            setWith(account.getRoster().getContact(with), state);
 544            if (xmppConnectionService
 545                    .getJingleConnectionManager()
 546                    .fireJingleRtpConnectionStateUpdates()) {
 547                return;
 548            }
 549            if (END_CARD.contains(state)
 550                    || xmppConnectionService
 551                            .getJingleConnectionManager()
 552                            .hasMatchingProposal(account, with)) {
 553                return;
 554            }
 555            Log.d(Config.LOGTAG, "restored state (" + state + ") was not an end card. finishing");
 556            finish();
 557        }
 558    }
 559
 560    private void setWidth(final RtpEndUserState state) {
 561        setWith(getWith(), state);
 562    }
 563
 564    private void setWith(final Contact contact, final RtpEndUserState state) {
 565        binding.with.setText(contact.getDisplayName());
 566        if (Arrays.asList(RtpEndUserState.INCOMING_CALL, RtpEndUserState.ACCEPTING_CALL)
 567                .contains(state)) {
 568            binding.withJid.setText(contact.getJid().asBareJid().toEscapedString());
 569            binding.withJid.setVisibility(View.VISIBLE);
 570        } else {
 571            binding.withJid.setVisibility(View.GONE);
 572        }
 573    }
 574
 575    private void proposeJingleRtpSession(
 576            final Account account, final Jid with, final Set<Media> media) {
 577        checkMicrophoneAvailabilityAsync();
 578        if (with.isBareJid()) {
 579            xmppConnectionService
 580                    .getJingleConnectionManager()
 581                    .proposeJingleRtpSession(account, with, media);
 582        } else {
 583            final String sessionId =
 584                    xmppConnectionService
 585                            .getJingleConnectionManager()
 586                            .initializeRtpSession(account, with, media);
 587            initializeActivityWithRunningRtpSession(account, with, sessionId);
 588            resetIntent(account, with, sessionId);
 589        }
 590        putScreenInCallMode(media);
 591    }
 592
 593    @Override
 594    public void onRequestPermissionsResult(
 595            int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
 596        super.onRequestPermissionsResult(requestCode, permissions, grantResults);
 597        final PermissionUtils.PermissionResult permissionResult =
 598                PermissionUtils.removeBluetoothConnect(permissions, grantResults);
 599        if (PermissionUtils.allGranted(permissionResult.grantResults)) {
 600            if (requestCode == REQUEST_ACCEPT_CALL) {
 601                checkRecorderAndAcceptCall();
 602            } else if (requestCode == REQUEST_ACCEPT_CONTENT) {
 603                acceptContentAdd();
 604            } else if (requestCode == REQUEST_ADD_CONTENT) {
 605                switchToVideo();
 606            }
 607        } else {
 608            @StringRes int res;
 609            final String firstDenied =
 610                    getFirstDenied(permissionResult.grantResults, permissionResult.permissions);
 611            if (firstDenied == null) {
 612                return;
 613            }
 614            if (Manifest.permission.RECORD_AUDIO.equals(firstDenied)) {
 615                res = R.string.no_microphone_permission;
 616            } else if (Manifest.permission.CAMERA.equals(firstDenied)) {
 617                res = R.string.no_camera_permission;
 618            } else {
 619                throw new IllegalStateException("Invalid permission result request");
 620            }
 621            Toast.makeText(this, getString(res, getString(R.string.app_name)), Toast.LENGTH_SHORT)
 622                    .show();
 623        }
 624    }
 625
 626    @Override
 627    public void onStart() {
 628        super.onStart();
 629        mHandler.postDelayed(mTickExecutor, CALL_DURATION_UPDATE_INTERVAL);
 630        this.binding.remoteVideo.setOnAspectRatioChanged(this);
 631    }
 632
 633    @Override
 634    public void onStop() {
 635        mHandler.removeCallbacks(mTickExecutor);
 636        binding.remoteVideo.release();
 637        binding.remoteVideo.setOnAspectRatioChanged(null);
 638        binding.localVideo.release();
 639        final WeakReference<JingleRtpConnection> weakReference = this.rtpConnectionReference;
 640        final JingleRtpConnection jingleRtpConnection =
 641                weakReference == null ? null : weakReference.get();
 642        if (jingleRtpConnection != null) {
 643            releaseVideoTracks(jingleRtpConnection);
 644        }
 645        releaseProximityWakeLock();
 646        super.onStop();
 647    }
 648
 649    private void releaseVideoTracks(final JingleRtpConnection jingleRtpConnection) {
 650        final Optional<VideoTrack> remoteVideo = jingleRtpConnection.getRemoteVideoTrack();
 651        if (remoteVideo.isPresent()) {
 652            remoteVideo.get().removeSink(binding.remoteVideo);
 653        }
 654        final Optional<VideoTrack> localVideo = jingleRtpConnection.getLocalVideoTrack();
 655        if (localVideo.isPresent()) {
 656            localVideo.get().removeSink(binding.localVideo);
 657        }
 658    }
 659
 660    @Override
 661    public void onBackPressed() {
 662        if (isConnected()) {
 663            if (switchToPictureInPicture()) {
 664                return;
 665            }
 666        } else {
 667            endCall();
 668        }
 669        super.onBackPressed();
 670    }
 671
 672    @Override
 673    public void onUserLeaveHint() {
 674        super.onUserLeaveHint();
 675        if (switchToPictureInPicture()) {
 676            return;
 677        }
 678        // TODO apparently this method is not getting called on Android 10 when using the task
 679        // switcher
 680        if (emptyReference(rtpConnectionReference) && xmppConnectionService != null) {
 681            retractSessionProposal();
 682        }
 683    }
 684
 685    private boolean isConnected() {
 686        final JingleRtpConnection connection =
 687                this.rtpConnectionReference != null ? this.rtpConnectionReference.get() : null;
 688        final RtpEndUserState endUserState =
 689                connection == null ? null : connection.getEndUserState();
 690        return STATES_CONSIDERED_CONNECTED.contains(endUserState)
 691                || endUserState == RtpEndUserState.INCOMING_CONTENT_ADD;
 692    }
 693
 694    private boolean switchToPictureInPicture() {
 695        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O && deviceSupportsPictureInPicture()) {
 696            if (shouldBePictureInPicture()) {
 697                startPictureInPicture();
 698                return true;
 699            }
 700        }
 701        return false;
 702    }
 703
 704    @RequiresApi(api = Build.VERSION_CODES.O)
 705    private void startPictureInPicture() {
 706        try {
 707            final Rational rational = this.binding.remoteVideo.getAspectRatio();
 708            final Rational clippedRational = Rationals.clip(rational);
 709            Log.d(
 710                    Config.LOGTAG,
 711                    "suggested rational " + rational + ". clipped to " + clippedRational);
 712            enterPictureInPictureMode(
 713                    new PictureInPictureParams.Builder().setAspectRatio(clippedRational).build());
 714        } catch (final IllegalStateException e) {
 715            // this sometimes happens on Samsung phones (possibly when Knox is enabled)
 716            Log.w(Config.LOGTAG, "unable to enter picture in picture mode", e);
 717        }
 718    }
 719
 720    @Override
 721    public void onAspectRatioChanged(final Rational rational) {
 722        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O && isPictureInPicture()) {
 723            final Rational clippedRational = Rationals.clip(rational);
 724            Log.d(
 725                    Config.LOGTAG,
 726                    "suggested rational after aspect ratio change "
 727                            + rational
 728                            + ". clipped to "
 729                            + clippedRational);
 730            setPictureInPictureParams(
 731                    new PictureInPictureParams.Builder().setAspectRatio(clippedRational).build());
 732        }
 733    }
 734
 735    private boolean deviceSupportsPictureInPicture() {
 736        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
 737            return getPackageManager().hasSystemFeature(PackageManager.FEATURE_PICTURE_IN_PICTURE);
 738        } else {
 739            return false;
 740        }
 741    }
 742
 743    private boolean shouldBePictureInPicture() {
 744        try {
 745            final JingleRtpConnection rtpConnection = requireRtpConnection();
 746            return rtpConnection.getMedia().contains(Media.VIDEO)
 747                    && Arrays.asList(
 748                                    RtpEndUserState.ACCEPTING_CALL,
 749                                    RtpEndUserState.CONNECTING,
 750                                    RtpEndUserState.CONNECTED)
 751                            .contains(rtpConnection.getEndUserState());
 752        } catch (final IllegalStateException e) {
 753            return false;
 754        }
 755    }
 756
 757    private boolean initializeActivityWithRunningRtpSession(
 758            final Account account, Jid with, String sessionId) {
 759        final WeakReference<JingleRtpConnection> reference =
 760                xmppConnectionService
 761                        .getJingleConnectionManager()
 762                        .findJingleRtpConnection(account, with, sessionId);
 763        if (reference == null || reference.get() == null) {
 764            final JingleConnectionManager.TerminatedRtpSession terminatedRtpSession =
 765                    xmppConnectionService
 766                            .getJingleConnectionManager()
 767                            .getTerminalSessionState(with, sessionId);
 768            if (terminatedRtpSession == null) {
 769                throw new IllegalStateException(
 770                        "failed to initialize activity with running rtp session. session not found");
 771            }
 772            initializeWithTerminatedSessionState(account, with, terminatedRtpSession);
 773            return true;
 774        }
 775        this.rtpConnectionReference = reference;
 776        final RtpEndUserState currentState = requireRtpConnection().getEndUserState();
 777        final boolean verified = requireRtpConnection().isVerified();
 778        if (currentState == RtpEndUserState.ENDED) {
 779            finish();
 780            return true;
 781        }
 782        final Set<Media> media = getMedia();
 783        final ContentAddition contentAddition = getPendingContentAddition();
 784        if (currentState == RtpEndUserState.INCOMING_CALL) {
 785            getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
 786        }
 787        if (JingleRtpConnection.STATES_SHOWING_ONGOING_CALL.contains(
 788                requireRtpConnection().getState())) {
 789            putScreenInCallMode();
 790        }
 791        setWidth(currentState);
 792        updateVideoViews(currentState);
 793        updateStateDisplay(currentState, media, contentAddition);
 794        updateVerifiedShield(verified && STATES_SHOWING_SWITCH_TO_CHAT.contains(currentState));
 795        updateButtonConfiguration(currentState, media, contentAddition);
 796        updateIncomingCallScreen(currentState);
 797        invalidateOptionsMenu();
 798        return false;
 799    }
 800
 801    private void initializeWithTerminatedSessionState(
 802            final Account account,
 803            final Jid with,
 804            final JingleConnectionManager.TerminatedRtpSession terminatedRtpSession) {
 805        Log.d(Config.LOGTAG, "initializeWithTerminatedSessionState()");
 806        if (terminatedRtpSession.state == RtpEndUserState.ENDED) {
 807            finish();
 808            return;
 809        }
 810        final RtpEndUserState state = terminatedRtpSession.state;
 811        resetIntent(account, with, terminatedRtpSession.state, terminatedRtpSession.media);
 812        updateButtonConfiguration(state);
 813        updateStateDisplay(state);
 814        updateIncomingCallScreen(state);
 815        updateCallDuration();
 816        updateVerifiedShield(false);
 817        invalidateOptionsMenu();
 818        setWith(account.getRoster().getContact(with), state);
 819    }
 820
 821    private void reInitializeActivityWithRunningRtpSession(
 822            final Account account, Jid with, String sessionId) {
 823        runOnUiThread(() -> initializeActivityWithRunningRtpSession(account, with, sessionId));
 824        resetIntent(account, with, sessionId);
 825    }
 826
 827    private void resetIntent(final Account account, final Jid with, final String sessionId) {
 828        final Intent intent = new Intent(Intent.ACTION_VIEW);
 829        intent.putExtra(EXTRA_ACCOUNT, account.getJid().toEscapedString());
 830        intent.putExtra(EXTRA_WITH, with.toEscapedString());
 831        intent.putExtra(EXTRA_SESSION_ID, sessionId);
 832        setIntent(intent);
 833    }
 834
 835    private void ensureSurfaceViewRendererIsSetup(final SurfaceViewRenderer surfaceViewRenderer) {
 836        surfaceViewRenderer.setVisibility(View.VISIBLE);
 837        try {
 838            surfaceViewRenderer.init(requireRtpConnection().getEglBaseContext(), null);
 839        } catch (final IllegalStateException e) {
 840            // Log.d(Config.LOGTAG, "SurfaceViewRenderer was already initialized");
 841        }
 842        surfaceViewRenderer.setEnableHardwareScaler(true);
 843    }
 844
 845    private void updateStateDisplay(final RtpEndUserState state) {
 846        updateStateDisplay(state, Collections.emptySet(), null);
 847    }
 848
 849    private void updateStateDisplay(
 850            final RtpEndUserState state,
 851            final Set<Media> media,
 852            final ContentAddition contentAddition) {
 853        switch (state) {
 854            case INCOMING_CALL -> {
 855                Preconditions.checkArgument(media.size() > 0, "Media must not be empty");
 856                if (media.contains(Media.VIDEO)) {
 857                    setTitle(R.string.rtp_state_incoming_video_call);
 858                } else {
 859                    setTitle(R.string.rtp_state_incoming_call);
 860                }
 861            }
 862            case INCOMING_CONTENT_ADD -> {
 863                if (contentAddition != null && contentAddition.media().contains(Media.VIDEO)) {
 864                    setTitle(R.string.rtp_state_content_add_video);
 865                } else {
 866                    setTitle(R.string.rtp_state_content_add);
 867                }
 868            }
 869            case CONNECTING -> setTitle(R.string.rtp_state_connecting);
 870            case CONNECTED -> setTitle(R.string.rtp_state_connected);
 871            case RECONNECTING -> setTitle(R.string.rtp_state_reconnecting);
 872            case ACCEPTING_CALL -> setTitle(R.string.rtp_state_accepting_call);
 873            case ENDING_CALL -> setTitle(R.string.rtp_state_ending_call);
 874            case FINDING_DEVICE -> setTitle(R.string.rtp_state_finding_device);
 875            case RINGING -> setTitle(R.string.rtp_state_ringing);
 876            case DECLINED_OR_BUSY -> setTitle(R.string.rtp_state_declined_or_busy);
 877            case CONNECTIVITY_ERROR -> setTitle(R.string.rtp_state_connectivity_error);
 878            case CONNECTIVITY_LOST_ERROR -> setTitle(R.string.rtp_state_connectivity_lost_error);
 879            case RETRACTED -> setTitle(R.string.rtp_state_retracted);
 880            case APPLICATION_ERROR -> setTitle(R.string.rtp_state_application_failure);
 881            case SECURITY_ERROR -> setTitle(R.string.rtp_state_security_error);
 882            case ENDED -> throw new IllegalStateException(
 883                    "Activity should have called finishAndReleaseWakeLock();");
 884            default -> throw new IllegalStateException(
 885                    String.format("State %s has not been handled in UI", state));
 886        }
 887    }
 888
 889    private void updateVerifiedShield(final boolean verified) {
 890        if (isPictureInPicture()) {
 891            this.binding.verified.setVisibility(View.GONE);
 892            return;
 893        }
 894        this.binding.verified.setVisibility(verified ? View.VISIBLE : View.GONE);
 895    }
 896
 897    private void updateIncomingCallScreen(final RtpEndUserState state) {
 898        updateIncomingCallScreen(state, null);
 899    }
 900
 901    private void updateIncomingCallScreen(final RtpEndUserState state, final Contact contact) {
 902        if (state == RtpEndUserState.INCOMING_CALL || state == RtpEndUserState.ACCEPTING_CALL) {
 903            final boolean show = getResources().getBoolean(R.bool.show_avatar_incoming_call);
 904            if (show) {
 905                binding.contactPhoto.setVisibility(View.VISIBLE);
 906                if (contact == null) {
 907                    AvatarWorkerTask.loadAvatar(
 908                            getWith(), binding.contactPhoto, R.dimen.publish_avatar_size);
 909                } else {
 910                    AvatarWorkerTask.loadAvatar(
 911                            contact, binding.contactPhoto, R.dimen.publish_avatar_size);
 912                }
 913            } else {
 914                binding.contactPhoto.setVisibility(View.GONE);
 915            }
 916            final Account account = contact == null ? getWith().getAccount() : contact.getAccount();
 917            binding.usingAccount.setVisibility(View.VISIBLE);
 918            binding.usingAccount.setText(
 919                    getString(
 920                            R.string.using_account,
 921                            account.getJid().asBareJid().toEscapedString()));
 922        } else {
 923            binding.usingAccount.setVisibility(View.GONE);
 924            binding.contactPhoto.setVisibility(View.GONE);
 925        }
 926    }
 927
 928    private Set<Media> getMedia() {
 929        return requireRtpConnection().getMedia();
 930    }
 931
 932    public ContentAddition getPendingContentAddition() {
 933        return requireRtpConnection().getPendingContentAddition();
 934    }
 935
 936    private void updateButtonConfiguration(final RtpEndUserState state) {
 937        updateButtonConfiguration(state, Collections.emptySet(), null);
 938    }
 939
 940    @SuppressLint("RestrictedApi")
 941    private void updateButtonConfiguration(
 942            final RtpEndUserState state,
 943            final Set<Media> media,
 944            final ContentAddition contentAddition) {
 945        if (state == RtpEndUserState.ENDING_CALL || isPictureInPicture()) {
 946            this.binding.rejectCall.setVisibility(View.INVISIBLE);
 947            this.binding.endCall.setVisibility(View.INVISIBLE);
 948            this.binding.acceptCall.setVisibility(View.INVISIBLE);
 949        } else if (state == RtpEndUserState.INCOMING_CALL) {
 950            this.binding.rejectCall.setContentDescription(getString(R.string.dismiss_call));
 951            this.binding.rejectCall.setOnClickListener(this::rejectCall);
 952            this.binding.rejectCall.setImageResource(R.drawable.ic_call_end_white_48dp);
 953            this.binding.rejectCall.setVisibility(View.VISIBLE);
 954            this.binding.endCall.setVisibility(View.INVISIBLE);
 955            this.binding.acceptCall.setContentDescription(getString(R.string.answer_call));
 956            this.binding.acceptCall.setOnClickListener(this::acceptCall);
 957            this.binding.acceptCall.setImageResource(R.drawable.ic_call_white_48dp);
 958            this.binding.acceptCall.setVisibility(View.VISIBLE);
 959        } else if (state == RtpEndUserState.INCOMING_CONTENT_ADD) {
 960            this.binding.rejectCall.setContentDescription(
 961                    getString(R.string.reject_switch_to_video));
 962            this.binding.rejectCall.setOnClickListener(this::rejectContentAdd);
 963            this.binding.rejectCall.setImageResource(R.drawable.ic_clear_white_48dp);
 964            this.binding.rejectCall.setVisibility(View.VISIBLE);
 965            this.binding.endCall.setVisibility(View.INVISIBLE);
 966            this.binding.acceptCall.setContentDescription(getString(R.string.accept));
 967            this.binding.acceptCall.setOnClickListener((v -> acceptContentAdd(contentAddition)));
 968            this.binding.acceptCall.setImageResource(R.drawable.ic_baseline_check_24);
 969            this.binding.acceptCall.setVisibility(View.VISIBLE);
 970        } else if (state == RtpEndUserState.DECLINED_OR_BUSY) {
 971            this.binding.rejectCall.setContentDescription(getString(R.string.exit));
 972            this.binding.rejectCall.setOnClickListener(this::exit);
 973            this.binding.rejectCall.setImageResource(R.drawable.ic_clear_white_48dp);
 974            this.binding.rejectCall.setVisibility(View.VISIBLE);
 975            this.binding.endCall.setVisibility(View.INVISIBLE);
 976            this.binding.acceptCall.setContentDescription(getString(R.string.record_voice_mail));
 977            this.binding.acceptCall.setOnClickListener(this::recordVoiceMail);
 978            this.binding.acceptCall.setImageResource(R.drawable.ic_voicemail_white_24dp);
 979            this.binding.acceptCall.setVisibility(View.VISIBLE);
 980        } else if (asList(
 981                        RtpEndUserState.CONNECTIVITY_ERROR,
 982                        RtpEndUserState.CONNECTIVITY_LOST_ERROR,
 983                        RtpEndUserState.APPLICATION_ERROR,
 984                        RtpEndUserState.RETRACTED,
 985                        RtpEndUserState.SECURITY_ERROR)
 986                .contains(state)) {
 987            this.binding.rejectCall.setContentDescription(getString(R.string.exit));
 988            this.binding.rejectCall.setOnClickListener(this::exit);
 989            this.binding.rejectCall.setImageResource(R.drawable.ic_clear_white_48dp);
 990            this.binding.rejectCall.setVisibility(View.VISIBLE);
 991            this.binding.endCall.setVisibility(View.INVISIBLE);
 992            this.binding.acceptCall.setContentDescription(getString(R.string.try_again));
 993            this.binding.acceptCall.setOnClickListener(this::retry);
 994            this.binding.acceptCall.setImageResource(R.drawable.ic_replay_white_48dp);
 995            this.binding.acceptCall.setVisibility(View.VISIBLE);
 996        } else {
 997            this.binding.rejectCall.setVisibility(View.INVISIBLE);
 998            this.binding.endCall.setContentDescription(getString(R.string.hang_up));
 999            this.binding.endCall.setOnClickListener(this::endCall);
1000            this.binding.endCall.setImageResource(R.drawable.ic_call_end_white_48dp);
1001            this.binding.endCall.setVisibility(View.VISIBLE);
1002            this.binding.acceptCall.setVisibility(View.INVISIBLE);
1003        }
1004        updateInCallButtonConfiguration(state, media);
1005    }
1006
1007    private boolean isPictureInPicture() {
1008        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
1009            return isInPictureInPictureMode();
1010        } else {
1011            return false;
1012        }
1013    }
1014
1015    private void updateInCallButtonConfiguration() {
1016        updateInCallButtonConfiguration(
1017                requireRtpConnection().getEndUserState(), requireRtpConnection().getMedia());
1018    }
1019
1020    @SuppressLint("RestrictedApi")
1021    private void updateInCallButtonConfiguration(
1022            final RtpEndUserState state, final Set<Media> media) {
1023        if (STATES_CONSIDERED_CONNECTED.contains(state) && !isPictureInPicture()) {
1024            Preconditions.checkArgument(media.size() > 0, "Media must not be empty");
1025            if (media.contains(Media.VIDEO)) {
1026                final JingleRtpConnection rtpConnection = requireRtpConnection();
1027                updateInCallButtonConfigurationVideo(
1028                        rtpConnection.isVideoEnabled(), rtpConnection.isCameraSwitchable());
1029            } else {
1030                final AppRTCAudioManager audioManager = requireRtpConnection().getAudioManager();
1031                updateInCallButtonConfigurationSpeaker(
1032                        audioManager.getSelectedAudioDevice(),
1033                        audioManager.getAudioDevices().size());
1034                this.binding.inCallActionFarRight.setVisibility(View.GONE);
1035            }
1036            if (media.contains(Media.AUDIO)) {
1037                updateInCallButtonConfigurationMicrophone(
1038                        requireRtpConnection().isMicrophoneEnabled());
1039            } else {
1040                this.binding.inCallActionLeft.setVisibility(View.GONE);
1041            }
1042        } else {
1043            this.binding.inCallActionLeft.setVisibility(View.GONE);
1044            this.binding.inCallActionRight.setVisibility(View.GONE);
1045            this.binding.inCallActionFarRight.setVisibility(View.GONE);
1046        }
1047    }
1048
1049    @SuppressLint("RestrictedApi")
1050    private void updateInCallButtonConfigurationSpeaker(
1051            final AppRTCAudioManager.AudioDevice selectedAudioDevice, final int numberOfChoices) {
1052        switch (selectedAudioDevice) {
1053            case EARPIECE -> {
1054                this.binding.inCallActionRight.setImageResource(
1055                        R.drawable.ic_volume_off_black_24dp);
1056                if (numberOfChoices >= 2) {
1057                    this.binding.inCallActionRight.setOnClickListener(this::switchToSpeaker);
1058                } else {
1059                    this.binding.inCallActionRight.setOnClickListener(null);
1060                    this.binding.inCallActionRight.setClickable(false);
1061                }
1062            }
1063            case WIRED_HEADSET -> {
1064                this.binding.inCallActionRight.setImageResource(R.drawable.ic_headset_black_24dp);
1065                this.binding.inCallActionRight.setOnClickListener(null);
1066                this.binding.inCallActionRight.setClickable(false);
1067            }
1068            case SPEAKER_PHONE -> {
1069                this.binding.inCallActionRight.setImageResource(R.drawable.ic_volume_up_black_24dp);
1070                if (numberOfChoices >= 2) {
1071                    this.binding.inCallActionRight.setOnClickListener(this::switchToEarpiece);
1072                } else {
1073                    this.binding.inCallActionRight.setOnClickListener(null);
1074                    this.binding.inCallActionRight.setClickable(false);
1075                }
1076            }
1077            case BLUETOOTH -> {
1078                this.binding.inCallActionRight.setImageResource(
1079                        R.drawable.ic_bluetooth_audio_black_24dp);
1080                this.binding.inCallActionRight.setOnClickListener(null);
1081                this.binding.inCallActionRight.setClickable(false);
1082            }
1083        }
1084        this.binding.inCallActionRight.setVisibility(View.VISIBLE);
1085    }
1086
1087    @SuppressLint("RestrictedApi")
1088    private void updateInCallButtonConfigurationVideo(
1089            final boolean videoEnabled, final boolean isCameraSwitchable) {
1090        this.binding.inCallActionRight.setVisibility(View.VISIBLE);
1091        if (isCameraSwitchable) {
1092            this.binding.inCallActionFarRight.setImageResource(
1093                    R.drawable.ic_flip_camera_android_black_24dp);
1094            this.binding.inCallActionFarRight.setVisibility(View.VISIBLE);
1095            this.binding.inCallActionFarRight.setOnClickListener(this::switchCamera);
1096        } else {
1097            this.binding.inCallActionFarRight.setVisibility(View.GONE);
1098        }
1099        if (videoEnabled) {
1100            this.binding.inCallActionRight.setImageResource(R.drawable.ic_videocam_black_24dp);
1101            this.binding.inCallActionRight.setOnClickListener(this::disableVideo);
1102        } else {
1103            this.binding.inCallActionRight.setImageResource(R.drawable.ic_videocam_off_black_24dp);
1104            this.binding.inCallActionRight.setOnClickListener(this::enableVideo);
1105        }
1106    }
1107
1108    private void switchCamera(final View view) {
1109        Futures.addCallback(
1110                requireRtpConnection().switchCamera(),
1111                new FutureCallback<>() {
1112                    @Override
1113                    public void onSuccess(@Nullable Boolean isFrontCamera) {
1114                        binding.localVideo.setMirror(Boolean.TRUE.equals(isFrontCamera));
1115                    }
1116
1117                    @Override
1118                    public void onFailure(@NonNull final Throwable throwable) {
1119                        Log.d(
1120                                Config.LOGTAG,
1121                                "could not switch camera",
1122                                Throwables.getRootCause(throwable));
1123                        Toast.makeText(
1124                                        RtpSessionActivity.this,
1125                                        R.string.could_not_switch_camera,
1126                                        Toast.LENGTH_LONG)
1127                                .show();
1128                    }
1129                },
1130                MainThreadExecutor.getInstance());
1131    }
1132
1133    private void enableVideo(View view) {
1134        try {
1135            requireRtpConnection().setVideoEnabled(true);
1136        } catch (final IllegalStateException e) {
1137            Toast.makeText(this, R.string.unable_to_enable_video, Toast.LENGTH_SHORT).show();
1138            return;
1139        }
1140        updateInCallButtonConfigurationVideo(true, requireRtpConnection().isCameraSwitchable());
1141    }
1142
1143    private void disableVideo(View view) {
1144        final JingleRtpConnection rtpConnection = requireRtpConnection();
1145        final ContentAddition pending = rtpConnection.getPendingContentAddition();
1146        if (pending != null && pending.direction == ContentAddition.Direction.OUTGOING) {
1147            rtpConnection.retractContentAdd();
1148            return;
1149        }
1150        requireRtpConnection().setVideoEnabled(false);
1151        updateInCallButtonConfigurationVideo(false, requireRtpConnection().isCameraSwitchable());
1152    }
1153
1154    @SuppressLint("RestrictedApi")
1155    private void updateInCallButtonConfigurationMicrophone(final boolean microphoneEnabled) {
1156        if (microphoneEnabled) {
1157            this.binding.inCallActionLeft.setImageResource(R.drawable.ic_mic_black_24dp);
1158            this.binding.inCallActionLeft.setOnClickListener(this::disableMicrophone);
1159        } else {
1160            this.binding.inCallActionLeft.setImageResource(R.drawable.ic_mic_off_black_24dp);
1161            this.binding.inCallActionLeft.setOnClickListener(this::enableMicrophone);
1162        }
1163        this.binding.inCallActionLeft.setVisibility(View.VISIBLE);
1164    }
1165
1166    private void updateCallDuration() {
1167        final JingleRtpConnection connection =
1168                this.rtpConnectionReference != null ? this.rtpConnectionReference.get() : null;
1169        if (connection == null || connection.getMedia().contains(Media.VIDEO)) {
1170            this.binding.duration.setVisibility(View.GONE);
1171            return;
1172        }
1173        if (connection.zeroDuration()) {
1174            this.binding.duration.setVisibility(View.GONE);
1175        } else {
1176            this.binding.duration.setText(
1177                    TimeFrameUtils.formatElapsedTime(connection.getCallDuration(), false));
1178            this.binding.duration.setVisibility(View.VISIBLE);
1179        }
1180    }
1181
1182    private void updateVideoViews(final RtpEndUserState state) {
1183        if (END_CARD.contains(state) || state == RtpEndUserState.ENDING_CALL) {
1184            binding.localVideo.setVisibility(View.GONE);
1185            binding.localVideo.release();
1186            binding.remoteVideoWrapper.setVisibility(View.GONE);
1187            binding.remoteVideo.release();
1188            binding.pipLocalMicOffIndicator.setVisibility(View.GONE);
1189            if (isPictureInPicture()) {
1190                binding.appBarLayout.setVisibility(View.GONE);
1191                binding.pipPlaceholder.setVisibility(View.VISIBLE);
1192                if (Arrays.asList(
1193                                RtpEndUserState.APPLICATION_ERROR,
1194                                RtpEndUserState.CONNECTIVITY_ERROR,
1195                                RtpEndUserState.SECURITY_ERROR)
1196                        .contains(state)) {
1197                    binding.pipWarning.setVisibility(View.VISIBLE);
1198                    binding.pipWaiting.setVisibility(View.GONE);
1199                } else {
1200                    binding.pipWarning.setVisibility(View.GONE);
1201                    binding.pipWaiting.setVisibility(View.GONE);
1202                }
1203            } else {
1204                binding.appBarLayout.setVisibility(View.VISIBLE);
1205                binding.pipPlaceholder.setVisibility(View.GONE);
1206            }
1207            getWindow().clearFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
1208            return;
1209        }
1210        if (isPictureInPicture() && STATES_SHOWING_PIP_PLACEHOLDER.contains(state)) {
1211            binding.localVideo.setVisibility(View.GONE);
1212            binding.remoteVideoWrapper.setVisibility(View.GONE);
1213            binding.appBarLayout.setVisibility(View.GONE);
1214            binding.pipPlaceholder.setVisibility(View.VISIBLE);
1215            binding.pipWarning.setVisibility(View.GONE);
1216            binding.pipWaiting.setVisibility(View.VISIBLE);
1217            binding.pipLocalMicOffIndicator.setVisibility(View.GONE);
1218            return;
1219        }
1220        final Optional<VideoTrack> localVideoTrack = getLocalVideoTrack();
1221        if (localVideoTrack.isPresent() && !isPictureInPicture()) {
1222            ensureSurfaceViewRendererIsSetup(binding.localVideo);
1223            // paint local view over remote view
1224            binding.localVideo.setZOrderMediaOverlay(true);
1225            binding.localVideo.setMirror(requireRtpConnection().isFrontCamera());
1226            addSink(localVideoTrack.get(), binding.localVideo);
1227        } else {
1228            binding.localVideo.setVisibility(View.GONE);
1229        }
1230        final Optional<VideoTrack> remoteVideoTrack = getRemoteVideoTrack();
1231        if (remoteVideoTrack.isPresent()) {
1232            ensureSurfaceViewRendererIsSetup(binding.remoteVideo);
1233            addSink(remoteVideoTrack.get(), binding.remoteVideo);
1234            binding.remoteVideo.setScalingType(
1235                    RendererCommon.ScalingType.SCALE_ASPECT_FILL,
1236                    RendererCommon.ScalingType.SCALE_ASPECT_FIT);
1237            if (state == RtpEndUserState.CONNECTED) {
1238                binding.appBarLayout.setVisibility(View.GONE);
1239                getWindow().addFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
1240                binding.remoteVideoWrapper.setVisibility(View.VISIBLE);
1241            } else {
1242                binding.appBarLayout.setVisibility(View.VISIBLE);
1243                getWindow().clearFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
1244                binding.remoteVideoWrapper.setVisibility(View.GONE);
1245            }
1246            if (isPictureInPicture() && !requireRtpConnection().isMicrophoneEnabled()) {
1247                binding.pipLocalMicOffIndicator.setVisibility(View.VISIBLE);
1248            } else {
1249                binding.pipLocalMicOffIndicator.setVisibility(View.GONE);
1250            }
1251        } else {
1252            getWindow().clearFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
1253            binding.remoteVideoWrapper.setVisibility(View.GONE);
1254            binding.pipLocalMicOffIndicator.setVisibility(View.GONE);
1255        }
1256    }
1257
1258    private Optional<VideoTrack> getLocalVideoTrack() {
1259        final JingleRtpConnection connection =
1260                this.rtpConnectionReference != null ? this.rtpConnectionReference.get() : null;
1261        if (connection == null) {
1262            return Optional.absent();
1263        }
1264        return connection.getLocalVideoTrack();
1265    }
1266
1267    private Optional<VideoTrack> getRemoteVideoTrack() {
1268        final JingleRtpConnection connection =
1269                this.rtpConnectionReference != null ? this.rtpConnectionReference.get() : null;
1270        if (connection == null) {
1271            return Optional.absent();
1272        }
1273        return connection.getRemoteVideoTrack();
1274    }
1275
1276    private void disableMicrophone(View view) {
1277        final JingleRtpConnection rtpConnection = requireRtpConnection();
1278        if (rtpConnection.setMicrophoneEnabled(false)) {
1279            updateInCallButtonConfiguration();
1280        }
1281    }
1282
1283    private void enableMicrophone(View view) {
1284        final JingleRtpConnection rtpConnection = requireRtpConnection();
1285        if (rtpConnection.setMicrophoneEnabled(true)) {
1286            updateInCallButtonConfiguration();
1287        }
1288    }
1289
1290    private void switchToEarpiece(View view) {
1291        requireRtpConnection()
1292                .getAudioManager()
1293                .setDefaultAudioDevice(AppRTCAudioManager.AudioDevice.EARPIECE);
1294        acquireProximityWakeLock();
1295    }
1296
1297    private void switchToSpeaker(View view) {
1298        requireRtpConnection()
1299                .getAudioManager()
1300                .setDefaultAudioDevice(AppRTCAudioManager.AudioDevice.SPEAKER_PHONE);
1301        releaseProximityWakeLock();
1302    }
1303
1304    private void retry(View view) {
1305        final Intent intent = getIntent();
1306        final Account account = extractAccount(intent);
1307        final Jid with = Jid.ofEscaped(intent.getStringExtra(EXTRA_WITH));
1308        final String lastAction = intent.getStringExtra(EXTRA_LAST_ACTION);
1309        final String action = intent.getAction();
1310        final Set<Media> media = actionToMedia(lastAction == null ? action : lastAction);
1311        this.rtpConnectionReference = null;
1312        Log.d(Config.LOGTAG, "attempting retry with " + with.toEscapedString());
1313        proposeJingleRtpSession(account, with, media);
1314    }
1315
1316    private void exit(final View view) {
1317        finish();
1318    }
1319
1320    private void recordVoiceMail(final View view) {
1321        final Intent intent = getIntent();
1322        final Account account = extractAccount(intent);
1323        final Jid with = Jid.ofEscaped(intent.getStringExtra(EXTRA_WITH));
1324        final Conversation conversation =
1325                xmppConnectionService.findOrCreateConversation(account, with, false, true);
1326        final Intent launchIntent = new Intent(this, ConversationsActivity.class);
1327        launchIntent.setAction(ConversationsActivity.ACTION_VIEW_CONVERSATION);
1328        launchIntent.putExtra(ConversationsActivity.EXTRA_CONVERSATION, conversation.getUuid());
1329        launchIntent.setFlags(intent.getFlags() | Intent.FLAG_ACTIVITY_CLEAR_TOP);
1330        launchIntent.putExtra(
1331                ConversationsActivity.EXTRA_POST_INIT_ACTION,
1332                ConversationsActivity.POST_ACTION_RECORD_VOICE);
1333        startActivity(launchIntent);
1334        finish();
1335    }
1336
1337    private Contact getWith() {
1338        final AbstractJingleConnection.Id id = requireRtpConnection().getId();
1339        final Account account = id.account;
1340        return account.getRoster().getContact(id.with);
1341    }
1342
1343    private JingleRtpConnection requireRtpConnection() {
1344        final JingleRtpConnection connection =
1345                this.rtpConnectionReference != null ? this.rtpConnectionReference.get() : null;
1346        if (connection == null) {
1347            throw new IllegalStateException("No RTP connection found");
1348        }
1349        return connection;
1350    }
1351
1352    @Override
1353    public void onJingleRtpConnectionUpdate(
1354            Account account, Jid with, final String sessionId, RtpEndUserState state) {
1355        Log.d(Config.LOGTAG, "onJingleRtpConnectionUpdate(" + state + ")");
1356        if (END_CARD.contains(state)) {
1357            Log.d(Config.LOGTAG, "end card reached");
1358            releaseProximityWakeLock();
1359            runOnUiThread(
1360                    () -> getWindow().clearFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON));
1361        }
1362        if (with.isBareJid()) {
1363            updateRtpSessionProposalState(account, with, state);
1364            return;
1365        }
1366        if (emptyReference(this.rtpConnectionReference)) {
1367            if (END_CARD.contains(state)) {
1368                Log.d(Config.LOGTAG, "not reinitializing session");
1369                return;
1370            }
1371            // this happens when going from proposed session to actual session
1372            reInitializeActivityWithRunningRtpSession(account, with, sessionId);
1373            return;
1374        }
1375        final AbstractJingleConnection.Id id = requireRtpConnection().getId();
1376        final boolean verified = requireRtpConnection().isVerified();
1377        final Set<Media> media = getMedia();
1378        lockOrientation(media);
1379        final ContentAddition contentAddition = getPendingContentAddition();
1380        final Contact contact = getWith();
1381        if (account == id.account && id.with.equals(with) && id.sessionId.equals(sessionId)) {
1382            if (state == RtpEndUserState.ENDED) {
1383                finish();
1384                return;
1385            }
1386            runOnUiThread(
1387                    () -> {
1388                        updateStateDisplay(state, media, contentAddition);
1389                        updateVerifiedShield(
1390                                verified && STATES_SHOWING_SWITCH_TO_CHAT.contains(state));
1391                        updateButtonConfiguration(state, media, contentAddition);
1392                        updateVideoViews(state);
1393                        updateIncomingCallScreen(state, contact);
1394                        invalidateOptionsMenu();
1395                    });
1396            if (END_CARD.contains(state)) {
1397                final JingleRtpConnection rtpConnection = requireRtpConnection();
1398                resetIntent(account, with, state, rtpConnection.getMedia());
1399                releaseVideoTracks(rtpConnection);
1400                this.rtpConnectionReference = null;
1401            }
1402        } else {
1403            Log.d(Config.LOGTAG, "received update for other rtp session");
1404        }
1405    }
1406
1407    @Override
1408    public void onAudioDeviceChanged(
1409            final AppRTCAudioManager.AudioDevice selectedAudioDevice,
1410            final Set<AppRTCAudioManager.AudioDevice> availableAudioDevices) {
1411        Log.d(
1412                Config.LOGTAG,
1413                "onAudioDeviceChanged in activity: selected:"
1414                        + selectedAudioDevice
1415                        + ", available:"
1416                        + availableAudioDevices);
1417        try {
1418            final RtpEndUserState endUserState = requireRtpConnection().getEndUserState();
1419            final Set<Media> media = getMedia();
1420            if (END_CARD.contains(endUserState)) {
1421                Log.d(
1422                        Config.LOGTAG,
1423                        "onAudioDeviceChanged() nothing to do because end card has been reached");
1424            } else {
1425                if (Media.audioOnly(media) && endUserState == RtpEndUserState.CONNECTED) {
1426                    final AppRTCAudioManager audioManager =
1427                            requireRtpConnection().getAudioManager();
1428                    updateInCallButtonConfigurationSpeaker(
1429                            audioManager.getSelectedAudioDevice(),
1430                            audioManager.getAudioDevices().size());
1431                }
1432                Log.d(
1433                        Config.LOGTAG,
1434                        "put proximity wake lock into proper state after device update");
1435                putProximityWakeLockInProperState(selectedAudioDevice);
1436            }
1437        } catch (final IllegalStateException e) {
1438            Log.d(Config.LOGTAG, "RTP connection was not available when audio device changed");
1439        }
1440    }
1441
1442    private void updateRtpSessionProposalState(
1443            final Account account, final Jid with, final RtpEndUserState state) {
1444        final Intent currentIntent = getIntent();
1445        final String withExtra =
1446                currentIntent == null ? null : currentIntent.getStringExtra(EXTRA_WITH);
1447        if (withExtra == null) {
1448            return;
1449        }
1450        if (Jid.ofEscaped(withExtra).asBareJid().equals(with)) {
1451            runOnUiThread(
1452                    () -> {
1453                        updateVerifiedShield(false);
1454                        updateStateDisplay(state);
1455                        updateButtonConfiguration(state);
1456                        updateIncomingCallScreen(state);
1457                        invalidateOptionsMenu();
1458                    });
1459            resetIntent(account, with, state, actionToMedia(currentIntent.getAction()));
1460        }
1461    }
1462
1463    private void resetIntent(final Bundle extras) {
1464        final Intent intent = new Intent(Intent.ACTION_VIEW);
1465        intent.putExtras(extras);
1466        setIntent(intent);
1467    }
1468
1469    private void resetIntent(
1470            final Account account, Jid with, final RtpEndUserState state, final Set<Media> media) {
1471        final Intent intent = new Intent(Intent.ACTION_VIEW);
1472        intent.putExtra(EXTRA_ACCOUNT, account.getJid().toEscapedString());
1473        if (RtpCapability.jmiSupport(account.getRoster().getContact(with))) {
1474            intent.putExtra(EXTRA_WITH, with.asBareJid().toEscapedString());
1475        } else {
1476            intent.putExtra(EXTRA_WITH, with.toEscapedString());
1477        }
1478        intent.putExtra(EXTRA_LAST_REPORTED_STATE, state.toString());
1479        intent.putExtra(
1480                EXTRA_LAST_ACTION,
1481                media.contains(Media.VIDEO) ? ACTION_MAKE_VIDEO_CALL : ACTION_MAKE_VOICE_CALL);
1482        setIntent(intent);
1483    }
1484
1485    private static boolean emptyReference(final WeakReference<?> weakReference) {
1486        return weakReference == null || weakReference.get() == null;
1487    }
1488}