Update dialer sources.

Test: Built package and system image.

This change clobbers the old source, and is an export
from an internal Google repository.

The internal repository was forked form Android in March,
and this change includes modifications since then, to
near the v8 release.

Since the fork, we've moved code from monolithic to independent modules. In addition,
we've switched to Blaze/Bazel as the build sysetm. This export, however, still uses make.

New dependencies have been added:
- Dagger
- Auto-Value
- Glide
- Libshortcutbadger

Going forward, development will still be in Google3, and the Gerrit release
will become an automated export, with the next drop happening in ~ two weeks.

Android.mk includes local modifications from ToT.

Abridged changelog:

Bug fixes
● Not able to mute, add a call when using Phone app in multiwindow mode
● Double tap on keypad triggering multiple key and tones
● Reported spam numbers not showing as spam in the call log
● Crash when user tries to block number while Phone app is not set as default
● Crash when user picks a number from search auto-complete list

Visual Voicemail (VVM) improvements
● Share Voicemail audio via standard exporting mechanisms that support file attachment
(email, MMS, etc.)
● Make phone number, email and web sites in VVM transcript clickable
● Set PIN before declining VVM Terms of Service {Carrier}
● Set client type for outbound visual voicemail SMS {Carrier}

New incoming call and incall UI on older devices
(Android M)
● Updated Phone app icon
● New incall UI (large buttons, button labels)
● New and animated Answer/Reject gestures

Accessibility
● Add custom answer/decline call buttons on answer screen for touch exploration
accessibility services
● Increase size of touch target
● Add verbal feedback when a Voicemail fails to load
● Fix pressing of Phone buttons while in a phone call using Switch Access
● Fix selecting and opening contacts in talkback mode
● Split focus for ‘Learn More’ link in caller id & spam to help distinguish similar text

Other
● Backup & Restore for App Preferences
● Prompt user to enable Wi-Fi calling if the call ends due to out of service and Wi-Fi is
connected
● Rename “Dialpad” to “Keypad”
● Show "Private number" for restricted calls
● Delete unused items (vcard, add contact, call history) from Phone menu

Change-Id: I2a7e53532a24c21bf308bf0a6d178d7ddbca4958

1 files changed, 1401 insertions, 0 deletions

diff --git a/java/com/android/incallui/call/DialerCall.java b/java/com/android/incallui/call/DialerCall.java
new file mode 100644
index 000000000..bd8f006dd
--- /dev/null
+++ b/java/com/android/incallui/call/DialerCall.java
@@ -0,0 +1,1401 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.incallui.call;
+
+import android.content.Context;
+import android.hardware.camera2.CameraCharacteristics;
+import android.net.Uri;
+import android.os.Build.VERSION;
+import android.os.Build.VERSION_CODES;
+import android.os.Bundle;
+import android.os.Trace;
+import android.support.annotation.IntDef;
+import android.support.annotation.Nullable;
+import android.telecom.Call;
+import android.telecom.Call.Details;
+import android.telecom.Connection;
+import android.telecom.DisconnectCause;
+import android.telecom.GatewayInfo;
+import android.telecom.InCallService.VideoCall;
+import android.telecom.PhoneAccount;
+import android.telecom.PhoneAccountHandle;
+import android.telecom.StatusHints;
+import android.telecom.TelecomManager;
+import android.telecom.VideoProfile;
+import android.telephony.PhoneNumberUtils;
+import android.text.TextUtils;
+import com.android.contacts.common.compat.CallCompat;
+import com.android.contacts.common.compat.TelephonyManagerCompat;
+import com.android.contacts.common.compat.telecom.TelecomManagerCompat;
+import com.android.dialer.callintent.CallIntentParser;
+import com.android.dialer.callintent.nano.CallInitiationType;
+import com.android.dialer.callintent.nano.CallSpecificAppData;
+import com.android.dialer.common.Assert;
+import com.android.dialer.common.ConfigProviderBindings;
+import com.android.dialer.common.LogUtil;
+import com.android.dialer.logging.nano.ContactLookupResult;
+import com.android.dialer.util.CallUtil;
+import com.android.incallui.latencyreport.LatencyReport;
+import com.android.incallui.util.TelecomCallUtil;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Locale;
+import java.util.Objects;
+import java.util.UUID;
+import java.util.concurrent.CopyOnWriteArrayList;
+import java.util.concurrent.TimeUnit;
+
+/** Describes a single call and its state. */
+public class DialerCall {
+
+  public static final int CALL_HISTORY_STATUS_UNKNOWN = 0;
+  public static final int CALL_HISTORY_STATUS_PRESENT = 1;
+  public static final int CALL_HISTORY_STATUS_NOT_PRESENT = 2;
+  private static final String ID_PREFIX = "DialerCall_";
+  private static final String CONFIG_EMERGENCY_CALLBACK_WINDOW_MILLIS =
+      "emergency_callback_window_millis";
+  private static int sIdCounter = 0;
+
+  /**
+   * The unique call ID for every call. This will help us to identify each call and allow us the
+   * ability to stitch impressions to calls if needed.
+   */
+  private final String uniqueCallId = UUID.randomUUID().toString();
+
+  private final Call mTelecomCall;
+  private final LatencyReport mLatencyReport;
+  private final String mId;
+  private final List<String> mChildCallIds = new ArrayList<>();
+  private final VideoSettings mVideoSettings = new VideoSettings();
+  private final LogState mLogState = new LogState();
+  private final Context mContext;
+  private final DialerCallDelegate mDialerCallDelegate;
+  private final List<DialerCallListener> mListeners = new CopyOnWriteArrayList<>();
+  private final List<CannedTextResponsesLoadedListener> mCannedTextResponsesLoadedListeners =
+      new CopyOnWriteArrayList<>();
+
+  private boolean mIsEmergencyCall;
+  private Uri mHandle;
+  private int mState = State.INVALID;
+  private DisconnectCause mDisconnectCause;
+
+  private boolean hasShownWiFiToLteHandoverToast;
+  private boolean doNotShowDialogForHandoffToWifiFailure;
+
+  @SessionModificationState private int mSessionModificationState;
+  private int mVideoState;
+  /** mRequestedVideoState is used to store requested upgrade / downgrade video state */
+  private int mRequestedVideoState = VideoProfile.STATE_AUDIO_ONLY;
+
+  private InCallVideoCallCallback mVideoCallCallback;
+  private boolean mIsVideoCallCallbackRegistered;
+  private String mChildNumber;
+  private String mLastForwardedNumber;
+  private String mCallSubject;
+  private PhoneAccountHandle mPhoneAccountHandle;
+  @CallHistoryStatus private int mCallHistoryStatus = CALL_HISTORY_STATUS_UNKNOWN;
+  private boolean mIsSpam;
+  private boolean mIsBlocked;
+  private boolean isInUserSpamList;
+  private boolean isInUserWhiteList;
+  private boolean isInGlobalSpamList;
+  private boolean didShowCameraPermission;
+  private String callProviderLabel;
+  private String callbackNumber;
+
+  public static String getNumberFromHandle(Uri handle) {
+    return handle == null ? "" : handle.getSchemeSpecificPart();
+  }
+
+  /**
+   * Whether the call is put on hold by remote party. This is different than the {@link
+   * State.ONHOLD} state which indicates that the call is being held locally on the device.
+   */
+  private boolean isRemotelyHeld;
+
+  /**
+   * Indicates whether the phone account associated with this call supports specifying a call
+   * subject.
+   */
+  private boolean mIsCallSubjectSupported;
+
+  private final Call.Callback mTelecomCallCallback =
+      new Call.Callback() {
+        @Override
+        public void onStateChanged(Call call, int newState) {
+          LogUtil.v("TelecomCallCallback.onStateChanged", "call=" + call + " newState=" + newState);
+          update();
+        }
+
+        @Override
+        public void onParentChanged(Call call, Call newParent) {
+          LogUtil.v(
+              "TelecomCallCallback.onParentChanged", "call=" + call + " newParent=" + newParent);
+          update();
+        }
+
+        @Override
+        public void onChildrenChanged(Call call, List<Call> children) {
+          update();
+        }
+
+        @Override
+        public void onDetailsChanged(Call call, Call.Details details) {
+          LogUtil.v("TelecomCallCallback.onStateChanged", " call=" + call + " details=" + details);
+          update();
+        }
+
+        @Override
+        public void onCannedTextResponsesLoaded(Call call, List<String> cannedTextResponses) {
+          LogUtil.v(
+              "TelecomCallCallback.onStateChanged",
+              "call=" + call + " cannedTextResponses=" + cannedTextResponses);
+          for (CannedTextResponsesLoadedListener listener : mCannedTextResponsesLoadedListeners) {
+            listener.onCannedTextResponsesLoaded(DialerCall.this);
+          }
+        }
+
+        @Override
+        public void onPostDialWait(Call call, String remainingPostDialSequence) {
+          LogUtil.v(
+              "TelecomCallCallback.onStateChanged",
+              "call=" + call + " remainingPostDialSequence=" + remainingPostDialSequence);
+          update();
+        }
+
+        @Override
+        public void onVideoCallChanged(Call call, VideoCall videoCall) {
+          LogUtil.v(
+              "TelecomCallCallback.onStateChanged", "call=" + call + " videoCall=" + videoCall);
+          update();
+        }
+
+        @Override
+        public void onCallDestroyed(Call call) {
+          LogUtil.v("TelecomCallCallback.onStateChanged", "call=" + call);
+          call.unregisterCallback(this);
+        }
+
+        @Override
+        public void onConferenceableCallsChanged(Call call, List<Call> conferenceableCalls) {
+          LogUtil.v(
+              "DialerCall.onConferenceableCallsChanged",
+              "call %s, conferenceable calls: %d",
+              call,
+              conferenceableCalls.size());
+          update();
+        }
+
+        @Override
+        public void onConnectionEvent(android.telecom.Call call, String event, Bundle extras) {
+          LogUtil.v(
+              "DialerCall.onConnectionEvent",
+              "Call: " + call + ", Event: " + event + ", Extras: " + extras);
+          switch (event) {
+              // The Previous attempt to Merge two calls together has failed in Telecom. We must
+              // now update the UI to possibly re-enable the Merge button based on the number of
+              // currently conferenceable calls available or Connection Capabilities.
+            case android.telecom.Connection.EVENT_CALL_MERGE_FAILED:
+              update();
+              break;
+            case TelephonyManagerCompat.EVENT_HANDOVER_VIDEO_FROM_WIFI_TO_LTE:
+              notifyWiFiToLteHandover();
+              break;
+            case TelephonyManagerCompat.EVENT_HANDOVER_TO_WIFI_FAILED:
+              notifyHandoverToWifiFailed();
+              break;
+            case TelephonyManagerCompat.EVENT_CALL_REMOTELY_HELD:
+              isRemotelyHeld = true;
+              update();
+              break;
+            case TelephonyManagerCompat.EVENT_CALL_REMOTELY_UNHELD:
+              isRemotelyHeld = false;
+              update();
+              break;
+            default:
+              break;
+          }
+        }
+      };
+  private long mTimeAddedMs;
+
+  public DialerCall(
+      Context context,
+      DialerCallDelegate dialerCallDelegate,
+      Call telecomCall,
+      LatencyReport latencyReport,
+      boolean registerCallback) {
+    Assert.isNotNull(context);
+    mContext = context;
+    mDialerCallDelegate = dialerCallDelegate;
+    mTelecomCall = telecomCall;
+    mLatencyReport = latencyReport;
+    mId = ID_PREFIX + Integer.toString(sIdCounter++);
+
+    updateFromTelecomCall(registerCallback);
+
+    if (registerCallback) {
+      mTelecomCall.registerCallback(mTelecomCallCallback);
+    }
+
+    mTimeAddedMs = System.currentTimeMillis();
+    parseCallSpecificAppData();
+  }
+
+  private static int translateState(int state) {
+    switch (state) {
+      case Call.STATE_NEW:
+      case Call.STATE_CONNECTING:
+        return DialerCall.State.CONNECTING;
+      case Call.STATE_SELECT_PHONE_ACCOUNT:
+        return DialerCall.State.SELECT_PHONE_ACCOUNT;
+      case Call.STATE_DIALING:
+        return DialerCall.State.DIALING;
+      case Call.STATE_PULLING_CALL:
+        return DialerCall.State.PULLING;
+      case Call.STATE_RINGING:
+        return DialerCall.State.INCOMING;
+      case Call.STATE_ACTIVE:
+        return DialerCall.State.ACTIVE;
+      case Call.STATE_HOLDING:
+        return DialerCall.State.ONHOLD;
+      case Call.STATE_DISCONNECTED:
+        return DialerCall.State.DISCONNECTED;
+      case Call.STATE_DISCONNECTING:
+        return DialerCall.State.DISCONNECTING;
+      default:
+        return DialerCall.State.INVALID;
+    }
+  }
+
+  public static boolean areSame(DialerCall call1, DialerCall call2) {
+    if (call1 == null && call2 == null) {
+      return true;
+    } else if (call1 == null || call2 == null) {
+      return false;
+    }
+
+    // otherwise compare call Ids
+    return call1.getId().equals(call2.getId());
+  }
+
+  public static boolean areSameNumber(DialerCall call1, DialerCall call2) {
+    if (call1 == null && call2 == null) {
+      return true;
+    } else if (call1 == null || call2 == null) {
+      return false;
+    }
+
+    // otherwise compare call Numbers
+    return TextUtils.equals(call1.getNumber(), call2.getNumber());
+  }
+
+  public void addListener(DialerCallListener listener) {
+    Assert.isMainThread();
+    mListeners.add(listener);
+  }
+
+  public void removeListener(DialerCallListener listener) {
+    Assert.isMainThread();
+    mListeners.remove(listener);
+  }
+
+  public void addCannedTextResponsesLoadedListener(CannedTextResponsesLoadedListener listener) {
+    Assert.isMainThread();
+    mCannedTextResponsesLoadedListeners.add(listener);
+  }
+
+  public void removeCannedTextResponsesLoadedListener(CannedTextResponsesLoadedListener listener) {
+    Assert.isMainThread();
+    mCannedTextResponsesLoadedListeners.remove(listener);
+  }
+
+  public void notifyWiFiToLteHandover() {
+    LogUtil.i("DialerCall.notifyWiFiToLteHandover", "");
+    for (DialerCallListener listener : mListeners) {
+      listener.onWiFiToLteHandover();
+    }
+  }
+
+  public void notifyHandoverToWifiFailed() {
+    LogUtil.i("DialerCall.notifyHandoverToWifiFailed", "");
+    for (DialerCallListener listener : mListeners) {
+      listener.onHandoverToWifiFailure();
+    }
+  }
+
+  /* package-private */ Call getTelecomCall() {
+    return mTelecomCall;
+  }
+
+  public StatusHints getStatusHints() {
+    return mTelecomCall.getDetails().getStatusHints();
+  }
+
+  /**
+   * @return video settings of the call, null if the call is not a video call.
+   * @see VideoProfile
+   */
+  public VideoSettings getVideoSettings() {
+    return mVideoSettings;
+  }
+
+  private void update() {
+    Trace.beginSection("Update");
+    int oldState = getState();
+    // We want to potentially register a video call callback here.
+    updateFromTelecomCall(true /* registerCallback */);
+    if (oldState != getState() && getState() == DialerCall.State.DISCONNECTED) {
+      for (DialerCallListener listener : mListeners) {
+        listener.onDialerCallDisconnect();
+      }
+    } else {
+      for (DialerCallListener listener : mListeners) {
+        listener.onDialerCallUpdate();
+      }
+    }
+    Trace.endSection();
+  }
+
+  private void updateFromTelecomCall(boolean registerCallback) {
+    LogUtil.v("DialerCall.updateFromTelecomCall", mTelecomCall.toString());
+    final int translatedState = translateState(mTelecomCall.getState());
+    if (mState != State.BLOCKED) {
+      setState(translatedState);
+      setDisconnectCause(mTelecomCall.getDetails().getDisconnectCause());
+      maybeCancelVideoUpgrade(mTelecomCall.getDetails().getVideoState());
+    }
+
+    if (registerCallback && mTelecomCall.getVideoCall() != null) {
+      if (mVideoCallCallback == null) {
+        mVideoCallCallback = new InCallVideoCallCallback(this);
+      }
+      mTelecomCall.getVideoCall().registerCallback(mVideoCallCallback);
+      mIsVideoCallCallbackRegistered = true;
+    }
+
+    mChildCallIds.clear();
+    final int numChildCalls = mTelecomCall.getChildren().size();
+    for (int i = 0; i < numChildCalls; i++) {
+      mChildCallIds.add(
+          mDialerCallDelegate
+              .getDialerCallFromTelecomCall(mTelecomCall.getChildren().get(i))
+              .getId());
+    }
+
+    // The number of conferenced calls can change over the course of the call, so use the
+    // maximum number of conferenced child calls as the metric for conference call usage.
+    mLogState.conferencedCalls = Math.max(numChildCalls, mLogState.conferencedCalls);
+
+    updateFromCallExtras(mTelecomCall.getDetails().getExtras());
+
+    // If the handle of the call has changed, update state for the call determining if it is an
+    // emergency call.
+    Uri newHandle = mTelecomCall.getDetails().getHandle();
+    if (!Objects.equals(mHandle, newHandle)) {
+      mHandle = newHandle;
+      updateEmergencyCallState();
+    }
+
+    // If the phone account handle of the call is set, cache capability bit indicating whether
+    // the phone account supports call subjects.
+    PhoneAccountHandle newPhoneAccountHandle = mTelecomCall.getDetails().getAccountHandle();
+    if (!Objects.equals(mPhoneAccountHandle, newPhoneAccountHandle)) {
+      mPhoneAccountHandle = newPhoneAccountHandle;
+
+      if (mPhoneAccountHandle != null) {
+        PhoneAccount phoneAccount =
+            mContext.getSystemService(TelecomManager.class).getPhoneAccount(mPhoneAccountHandle);
+        if (phoneAccount != null) {
+          mIsCallSubjectSupported =
+              phoneAccount.hasCapabilities(PhoneAccount.CAPABILITY_CALL_SUBJECT);
+        }
+      }
+    }
+
+    if (mSessionModificationState
+            == DialerCall.SESSION_MODIFICATION_STATE_WAITING_FOR_UPGRADE_TO_VIDEO_RESPONSE
+        && isVideoCall()) {
+      // We find out in {@link InCallVideoCallCallback.onSessionModifyResponseReceived}
+      // whether the video upgrade request was accepted. We don't clear the session modification
+      // state right away though to avoid having the UI switch from video to voice to video.
+      // Once the underlying telecom call updates to video mode it's safe to clear the state.
+      LogUtil.i(
+          "DialerCall.updateFromTelecomCall",
+          "upgraded to video, clearing session modification state");
+      setSessionModificationState(DialerCall.SESSION_MODIFICATION_STATE_NO_REQUEST);
+    }
+  }
+
+  /**
+   * Tests corruption of the {@code callExtras} bundle by calling {@link
+   * Bundle#containsKey(String)}. If the bundle is corrupted a {@link IllegalArgumentException} will
+   * be thrown and caught by this function.
+   *
+   * @param callExtras the bundle to verify
+   * @return {@code true} if the bundle is corrupted, {@code false} otherwise.
+   */
+  protected boolean areCallExtrasCorrupted(Bundle callExtras) {
+    /**
+     * There's currently a bug in Telephony service (b/25613098) that could corrupt the extras
+     * bundle, resulting in a IllegalArgumentException while validating data under {@link
+     * Bundle#containsKey(String)}.
+     */
+    try {
+      callExtras.containsKey(Connection.EXTRA_CHILD_ADDRESS);
+      return false;
+    } catch (IllegalArgumentException e) {
+      LogUtil.e(
+          "DialerCall.areCallExtrasCorrupted", "callExtras is corrupted, ignoring exception", e);
+      return true;
+    }
+  }
+
+  protected void updateFromCallExtras(Bundle callExtras) {
+    if (callExtras == null || areCallExtrasCorrupted(callExtras)) {
+      /**
+       * If the bundle is corrupted, abandon information update as a work around. These are not
+       * critical for the dialer to function.
+       */
+      return;
+    }
+    // Check for a change in the child address and notify any listeners.
+    if (callExtras.containsKey(Connection.EXTRA_CHILD_ADDRESS)) {
+      String childNumber = callExtras.getString(Connection.EXTRA_CHILD_ADDRESS);
+      if (!Objects.equals(childNumber, mChildNumber)) {
+        mChildNumber = childNumber;
+        for (DialerCallListener listener : mListeners) {
+          listener.onDialerCallChildNumberChange();
+        }
+      }
+    }
+
+    // Last forwarded number comes in as an array of strings.  We want to choose the
+    // last item in the array.  The forwarding numbers arrive independently of when the
+    // call is originally set up, so we need to notify the the UI of the change.
+    if (callExtras.containsKey(Connection.EXTRA_LAST_FORWARDED_NUMBER)) {
+      ArrayList<String> lastForwardedNumbers =
+          callExtras.getStringArrayList(Connection.EXTRA_LAST_FORWARDED_NUMBER);
+
+      if (lastForwardedNumbers != null) {
+        String lastForwardedNumber = null;
+        if (!lastForwardedNumbers.isEmpty()) {
+          lastForwardedNumber = lastForwardedNumbers.get(lastForwardedNumbers.size() - 1);
+        }
+
+        if (!Objects.equals(lastForwardedNumber, mLastForwardedNumber)) {
+          mLastForwardedNumber = lastForwardedNumber;
+          for (DialerCallListener listener : mListeners) {
+            listener.onDialerCallLastForwardedNumberChange();
+          }
+        }
+      }
+    }
+
+    // DialerCall subject is present in the extras at the start of call, so we do not need to
+    // notify any other listeners of this.
+    if (callExtras.containsKey(Connection.EXTRA_CALL_SUBJECT)) {
+      String callSubject = callExtras.getString(Connection.EXTRA_CALL_SUBJECT);
+      if (!Objects.equals(mCallSubject, callSubject)) {
+        mCallSubject = callSubject;
+      }
+    }
+  }
+
+  /**
+   * Determines if a received upgrade to video request should be cancelled. This can happen if
+   * another InCall UI responds to the upgrade to video request.
+   *
+   * @param newVideoState The new video state.
+   */
+  private void maybeCancelVideoUpgrade(int newVideoState) {
+    boolean isVideoStateChanged = mVideoState != newVideoState;
+
+    if (mSessionModificationState
+            == DialerCall.SESSION_MODIFICATION_STATE_RECEIVED_UPGRADE_TO_VIDEO_REQUEST
+        && isVideoStateChanged) {
+
+      LogUtil.i("DialerCall.maybeCancelVideoUpgrade", "cancelling upgrade notification");
+      setSessionModificationState(DialerCall.SESSION_MODIFICATION_STATE_NO_REQUEST);
+    }
+    mVideoState = newVideoState;
+  }
+
+  public String getId() {
+    return mId;
+  }
+
+  public boolean hasShownWiFiToLteHandoverToast() {
+    return hasShownWiFiToLteHandoverToast;
+  }
+
+  public void setHasShownWiFiToLteHandoverToast() {
+    hasShownWiFiToLteHandoverToast = true;
+  }
+
+  public boolean showWifiHandoverAlertAsToast() {
+    return doNotShowDialogForHandoffToWifiFailure;
+  }
+
+  public void setDoNotShowDialogForHandoffToWifiFailure(boolean bool) {
+    doNotShowDialogForHandoffToWifiFailure = bool;
+  }
+
+  public long getTimeAddedMs() {
+    return mTimeAddedMs;
+  }
+
+  @Nullable
+  public String getNumber() {
+    return TelecomCallUtil.getNumber(mTelecomCall);
+  }
+
+  public void blockCall() {
+    mTelecomCall.reject(false, null);
+    setState(State.BLOCKED);
+  }
+
+  @Nullable
+  public Uri getHandle() {
+    return mTelecomCall == null ? null : mTelecomCall.getDetails().getHandle();
+  }
+
+  public boolean isEmergencyCall() {
+    return mIsEmergencyCall;
+  }
+
+  public boolean isPotentialEmergencyCallback() {
+    // The property PROPERTY_EMERGENCY_CALLBACK_MODE is only set for CDMA calls when the system
+    // is actually in emergency callback mode (ie data is disabled).
+    if (hasProperty(Details.PROPERTY_EMERGENCY_CALLBACK_MODE)) {
+      return true;
+    }
+    // We want to treat any incoming call that arrives a short time after an outgoing emergency call
+    // as a potential emergency callback.
+    if (getExtras() != null
+        && getExtras().getLong(TelecomManagerCompat.EXTRA_LAST_EMERGENCY_CALLBACK_TIME_MILLIS, 0)
+            > 0) {
+      long lastEmergencyCallMillis =
+          getExtras().getLong(TelecomManagerCompat.EXTRA_LAST_EMERGENCY_CALLBACK_TIME_MILLIS, 0);
+      if (isInEmergencyCallbackWindow(lastEmergencyCallMillis)) {
+        return true;
+      }
+    }
+    return false;
+  }
+
+  boolean isInEmergencyCallbackWindow(long timestampMillis) {
+    long emergencyCallbackWindowMillis =
+        ConfigProviderBindings.get(mContext)
+            .getLong(CONFIG_EMERGENCY_CALLBACK_WINDOW_MILLIS, TimeUnit.MINUTES.toMillis(5));
+    return System.currentTimeMillis() - timestampMillis < emergencyCallbackWindowMillis;
+  }
+
+  public int getState() {
+    if (mTelecomCall != null && mTelecomCall.getParent() != null) {
+      return State.CONFERENCED;
+    } else {
+      return mState;
+    }
+  }
+
+  public void setState(int state) {
+    mState = state;
+    if (mState == State.INCOMING) {
+      mLogState.isIncoming = true;
+    } else if (mState == State.DISCONNECTED) {
+      mLogState.duration =
+          getConnectTimeMillis() == 0 ? 0 : System.currentTimeMillis() - getConnectTimeMillis();
+    }
+  }
+
+  public int getNumberPresentation() {
+    return mTelecomCall == null ? -1 : mTelecomCall.getDetails().getHandlePresentation();
+  }
+
+  public int getCnapNamePresentation() {
+    return mTelecomCall == null ? -1 : mTelecomCall.getDetails().getCallerDisplayNamePresentation();
+  }
+
+  @Nullable
+  public String getCnapName() {
+    return mTelecomCall == null ? null : getTelecomCall().getDetails().getCallerDisplayName();
+  }
+
+  public Bundle getIntentExtras() {
+    return mTelecomCall.getDetails().getIntentExtras();
+  }
+
+  @Nullable
+  public Bundle getExtras() {
+    return mTelecomCall == null ? null : mTelecomCall.getDetails().getExtras();
+  }
+
+  /** @return The child number for the call, or {@code null} if none specified. */
+  public String getChildNumber() {
+    return mChildNumber;
+  }
+
+  /** @return The last forwarded number for the call, or {@code null} if none specified. */
+  public String getLastForwardedNumber() {
+    return mLastForwardedNumber;
+  }
+
+  /** @return The call subject, or {@code null} if none specified. */
+  public String getCallSubject() {
+    return mCallSubject;
+  }
+
+  /**
+   * @return {@code true} if the call's phone account supports call subjects, {@code false}
+   *     otherwise.
+   */
+  public boolean isCallSubjectSupported() {
+    return mIsCallSubjectSupported;
+  }
+
+  /** Returns call disconnect cause, defined by {@link DisconnectCause}. */
+  public DisconnectCause getDisconnectCause() {
+    if (mState == State.DISCONNECTED || mState == State.IDLE) {
+      return mDisconnectCause;
+    }
+
+    return new DisconnectCause(DisconnectCause.UNKNOWN);
+  }
+
+  public void setDisconnectCause(DisconnectCause disconnectCause) {
+    mDisconnectCause = disconnectCause;
+    mLogState.disconnectCause = mDisconnectCause;
+  }
+
+  /** Returns the possible text message responses. */
+  public List<String> getCannedSmsResponses() {
+    return mTelecomCall.getCannedTextResponses();
+  }
+
+  /** Checks if the call supports the given set of capabilities supplied as a bit mask. */
+  public boolean can(int capabilities) {
+    int supportedCapabilities = mTelecomCall.getDetails().getCallCapabilities();
+
+    if ((capabilities & Call.Details.CAPABILITY_MERGE_CONFERENCE) != 0) {
+      // We allow you to merge if the capabilities allow it or if it is a call with
+      // conferenceable calls.
+      if (mTelecomCall.getConferenceableCalls().isEmpty()
+          && ((Call.Details.CAPABILITY_MERGE_CONFERENCE & supportedCapabilities) == 0)) {
+        // Cannot merge calls if there are no calls to merge with.
+        return false;
+      }
+      capabilities &= ~Call.Details.CAPABILITY_MERGE_CONFERENCE;
+    }
+    return (capabilities == (capabilities & supportedCapabilities));
+  }
+
+  public boolean hasProperty(int property) {
+    return mTelecomCall.getDetails().hasProperty(property);
+  }
+
+  public String getUniqueCallId() {
+    return uniqueCallId;
+  }
+
+  /** Gets the time when the call first became active. */
+  public long getConnectTimeMillis() {
+    return mTelecomCall.getDetails().getConnectTimeMillis();
+  }
+
+  public boolean isConferenceCall() {
+    return hasProperty(Call.Details.PROPERTY_CONFERENCE);
+  }
+
+  @Nullable
+  public GatewayInfo getGatewayInfo() {
+    return mTelecomCall == null ? null : mTelecomCall.getDetails().getGatewayInfo();
+  }
+
+  @Nullable
+  public PhoneAccountHandle getAccountHandle() {
+    return mTelecomCall == null ? null : mTelecomCall.getDetails().getAccountHandle();
+  }
+
+  /**
+   * @return The {@link VideoCall} instance associated with the {@link Call}. Will return {@code
+   *     null} until {@link #updateFromTelecomCall(boolean)} has registered a valid callback on the
+   *     {@link VideoCall}.
+   */
+  public VideoCall getVideoCall() {
+    return mTelecomCall == null || !mIsVideoCallCallbackRegistered
+        ? null
+        : mTelecomCall.getVideoCall();
+  }
+
+  public List<String> getChildCallIds() {
+    return mChildCallIds;
+  }
+
+  public String getParentId() {
+    Call parentCall = mTelecomCall.getParent();
+    if (parentCall != null) {
+      return mDialerCallDelegate.getDialerCallFromTelecomCall(parentCall).getId();
+    }
+    return null;
+  }
+
+  public int getVideoState() {
+    return mTelecomCall.getDetails().getVideoState();
+  }
+
+  public boolean isVideoCall() {
+    return CallUtil.isVideoEnabled(mContext) && VideoUtils.isVideoCall(getVideoState());
+  }
+
+  /**
+   * Determines if the call handle is an emergency number or not and caches the result to avoid
+   * repeated calls to isEmergencyNumber.
+   */
+  private void updateEmergencyCallState() {
+    mIsEmergencyCall = TelecomCallUtil.isEmergencyCall(mTelecomCall);
+  }
+
+  /**
+   * Gets the video state which was requested via a session modification request.
+   *
+   * @return The video state.
+   */
+  public int getRequestedVideoState() {
+    return mRequestedVideoState;
+  }
+
+  /**
+   * Handles incoming session modification requests. Stores the pending video request and sets the
+   * session modification state to {@link
+   * DialerCall#SESSION_MODIFICATION_STATE_RECEIVED_UPGRADE_TO_VIDEO_REQUEST} so that we can keep
+   * track of the fact the request was received. Only upgrade requests require user confirmation and
+   * will be handled by this method. The remote user can turn off their own camera without
+   * confirmation.
+   *
+   * @param videoState The requested video state.
+   */
+  public void setRequestedVideoState(int videoState) {
+    LogUtil.v("DialerCall.setRequestedVideoState", "videoState: " + videoState);
+    if (videoState == getVideoState()) {
+      LogUtil.e("DialerCall.setRequestedVideoState", "clearing session modification state");
+      setSessionModificationState(DialerCall.SESSION_MODIFICATION_STATE_NO_REQUEST);
+      return;
+    }
+
+    mRequestedVideoState = videoState;
+    setSessionModificationState(
+        DialerCall.SESSION_MODIFICATION_STATE_RECEIVED_UPGRADE_TO_VIDEO_REQUEST);
+    for (DialerCallListener listener : mListeners) {
+      listener.onDialerCallUpgradeToVideo();
+    }
+
+    LogUtil.i(
+        "DialerCall.setRequestedVideoState",
+        "mSessionModificationState: %d, videoState: %d",
+        mSessionModificationState,
+        videoState);
+    update();
+  }
+
+  /**
+   * Gets the current video session modification state.
+   *
+   * @return The session modification state.
+   */
+  @SessionModificationState
+  public int getSessionModificationState() {
+    return mSessionModificationState;
+  }
+
+  /**
+   * Set the session modification state. Used to keep track of pending video session modification
+   * operations and to inform listeners of these changes.
+   *
+   * @param state the new session modification state.
+   */
+  public void setSessionModificationState(@SessionModificationState int state) {
+    boolean hasChanged = mSessionModificationState != state;
+    if (hasChanged) {
+      LogUtil.i(
+          "DialerCall.setSessionModificationState", "%d -> %d", mSessionModificationState, state);
+      mSessionModificationState = state;
+      for (DialerCallListener listener : mListeners) {
+        listener.onDialerCallSessionModificationStateChange(state);
+      }
+    }
+  }
+
+  public LogState getLogState() {
+    return mLogState;
+  }
+
+  /**
+   * Determines if the call is an external call.
+   *
+   * <p>An external call is one which does not exist locally for the {@link
+   * android.telecom.ConnectionService} it is associated with.
+   *
+   * <p>External calls are only supported in N and higher.
+   *
+   * @return {@code true} if the call is an external call, {@code false} otherwise.
+   */
+  public boolean isExternalCall() {
+    return VERSION.SDK_INT >= VERSION_CODES.N
+        && hasProperty(CallCompat.Details.PROPERTY_IS_EXTERNAL_CALL);
+  }
+
+  /**
+   * Determines if the external call is pullable.
+   *
+   * <p>An external call is one which does not exist locally for the {@link
+   * android.telecom.ConnectionService} it is associated with. An external call may be "pullable",
+   * which means that the user can request it be transferred to the current device.
+   *
+   * <p>External calls are only supported in N and higher.
+   *
+   * @return {@code true} if the call is an external call, {@code false} otherwise.
+   */
+  public boolean isPullableExternalCall() {
+    return VERSION.SDK_INT >= VERSION_CODES.N
+        && (mTelecomCall.getDetails().getCallCapabilities()
+                & CallCompat.Details.CAPABILITY_CAN_PULL_CALL)
+            == CallCompat.Details.CAPABILITY_CAN_PULL_CALL;
+  }
+
+  /**
+   * Determines if answering this call will cause an ongoing video call to be dropped.
+   *
+   * @return {@code true} if answering this call will drop an ongoing video call, {@code false}
+   *     otherwise.
+   */
+  public boolean answeringDisconnectsForegroundVideoCall() {
+    Bundle extras = getExtras();
+    if (extras == null
+        || !extras.containsKey(CallCompat.Details.EXTRA_ANSWERING_DROPS_FOREGROUND_CALL)) {
+      return false;
+    }
+    return extras.getBoolean(CallCompat.Details.EXTRA_ANSWERING_DROPS_FOREGROUND_CALL);
+  }
+
+  private void parseCallSpecificAppData() {
+    if (isExternalCall()) {
+      return;
+    }
+
+    mLogState.callSpecificAppData = CallIntentParser.getCallSpecificAppData(getIntentExtras());
+    if (mLogState.callSpecificAppData == null) {
+      mLogState.callSpecificAppData = new CallSpecificAppData();
+      mLogState.callSpecificAppData.callInitiationType =
+          CallInitiationType.Type.EXTERNAL_INITIATION;
+    }
+    if (getState() == State.INCOMING) {
+      mLogState.callSpecificAppData.callInitiationType =
+          CallInitiationType.Type.INCOMING_INITIATION;
+    }
+  }
+
+  @Override
+  public String toString() {
+    if (mTelecomCall == null) {
+      // This should happen only in testing since otherwise we would never have a null
+      // Telecom call.
+      return String.valueOf(mId);
+    }
+
+    return String.format(
+        Locale.US,
+        "[%s, %s, %s, %s, children:%s, parent:%s, "
+            + "conferenceable:%s, videoState:%s, mSessionModificationState:%d, VideoSettings:%s]",
+        mId,
+        State.toString(getState()),
+        Details.capabilitiesToString(mTelecomCall.getDetails().getCallCapabilities()),
+        Details.propertiesToString(mTelecomCall.getDetails().getCallProperties()),
+        mChildCallIds,
+        getParentId(),
+        this.mTelecomCall.getConferenceableCalls(),
+        VideoProfile.videoStateToString(mTelecomCall.getDetails().getVideoState()),
+        mSessionModificationState,
+        getVideoSettings());
+  }
+
+  public String toSimpleString() {
+    return super.toString();
+  }
+
+  @CallHistoryStatus
+  public int getCallHistoryStatus() {
+    return mCallHistoryStatus;
+  }
+
+  public void setCallHistoryStatus(@CallHistoryStatus int callHistoryStatus) {
+    mCallHistoryStatus = callHistoryStatus;
+  }
+
+  public boolean didShowCameraPermission() {
+    return didShowCameraPermission;
+  }
+
+  public void setDidShowCameraPermission(boolean didShow) {
+    didShowCameraPermission = didShow;
+  }
+
+  public boolean isInGlobalSpamList() {
+    return isInGlobalSpamList;
+  }
+
+  public void setIsInGlobalSpamList(boolean inSpamList) {
+    isInGlobalSpamList = inSpamList;
+  }
+
+  public boolean isInUserSpamList() {
+    return isInUserSpamList;
+  }
+
+  public void setIsInUserSpamList(boolean inSpamList) {
+    isInUserSpamList = inSpamList;
+  }
+
+  public boolean isInUserWhiteList() {
+    return isInUserWhiteList;
+  }
+
+  public void setIsInUserWhiteList(boolean inWhiteList) {
+    isInUserWhiteList = inWhiteList;
+  }
+
+  public boolean isSpam() {
+    return mIsSpam;
+  }
+
+  public void setSpam(boolean isSpam) {
+    mIsSpam = isSpam;
+  }
+
+  public boolean isBlocked() {
+    return mIsBlocked;
+  }
+
+  public void setBlockedStatus(boolean isBlocked) {
+    mIsBlocked = isBlocked;
+  }
+
+  public boolean isRemotelyHeld() {
+    return isRemotelyHeld;
+  }
+
+  public boolean isIncoming() {
+    return mLogState.isIncoming;
+  }
+
+  public LatencyReport getLatencyReport() {
+    return mLatencyReport;
+  }
+
+  public void unregisterCallback() {
+    mTelecomCall.unregisterCallback(mTelecomCallCallback);
+  }
+
+  public void acceptUpgradeRequest(int videoState) {
+    LogUtil.i("DialerCall.acceptUpgradeRequest", "videoState: " + videoState);
+    VideoProfile videoProfile = new VideoProfile(videoState);
+    getVideoCall().sendSessionModifyResponse(videoProfile);
+    setSessionModificationState(DialerCall.SESSION_MODIFICATION_STATE_NO_REQUEST);
+  }
+
+  public void declineUpgradeRequest() {
+    LogUtil.i("DialerCall.declineUpgradeRequest", "");
+    VideoProfile videoProfile = new VideoProfile(getVideoState());
+    getVideoCall().sendSessionModifyResponse(videoProfile);
+    setSessionModificationState(DialerCall.SESSION_MODIFICATION_STATE_NO_REQUEST);
+  }
+
+  public void phoneAccountSelected(PhoneAccountHandle accountHandle, boolean setDefault) {
+    LogUtil.i(
+        "DialerCall.phoneAccountSelected",
+        "accountHandle: %s, setDefault: %b",
+        accountHandle,
+        setDefault);
+    mTelecomCall.phoneAccountSelected(accountHandle, setDefault);
+  }
+
+  public void disconnect() {
+    LogUtil.i("DialerCall.disconnect", "");
+    setState(DialerCall.State.DISCONNECTING);
+    for (DialerCallListener listener : mListeners) {
+      listener.onDialerCallUpdate();
+    }
+    mTelecomCall.disconnect();
+  }
+
+  public void hold() {
+    LogUtil.i("DialerCall.hold", "");
+    mTelecomCall.hold();
+  }
+
+  public void unhold() {
+    LogUtil.i("DialerCall.unhold", "");
+    mTelecomCall.unhold();
+  }
+
+  public void splitFromConference() {
+    LogUtil.i("DialerCall.splitFromConference", "");
+    mTelecomCall.splitFromConference();
+  }
+
+  public void answer(int videoState) {
+    LogUtil.i("DialerCall.answer", "videoState: " + videoState);
+    mTelecomCall.answer(videoState);
+  }
+
+  public void reject(boolean rejectWithMessage, String message) {
+    LogUtil.i("DialerCall.reject", "");
+    mTelecomCall.reject(rejectWithMessage, message);
+  }
+
+  /** Return the string label to represent the call provider */
+  public String getCallProviderLabel() {
+    if (callProviderLabel == null) {
+      PhoneAccount account = getPhoneAccount();
+      if (account != null && !TextUtils.isEmpty(account.getLabel())) {
+        List<PhoneAccountHandle> accounts =
+            mContext.getSystemService(TelecomManager.class).getCallCapablePhoneAccounts();
+        if (accounts != null && accounts.size() > 1) {
+          callProviderLabel = account.getLabel().toString();
+        }
+      }
+      if (callProviderLabel == null) {
+        callProviderLabel = "";
+      }
+    }
+    return callProviderLabel;
+  }
+
+  private PhoneAccount getPhoneAccount() {
+    PhoneAccountHandle accountHandle = getAccountHandle();
+    if (accountHandle == null) {
+      return null;
+    }
+    return mContext.getSystemService(TelecomManager.class).getPhoneAccount(accountHandle);
+  }
+
+  public String getCallbackNumber() {
+    if (callbackNumber == null) {
+      // Show the emergency callback number if either:
+      // 1. This is an emergency call.
+      // 2. The phone is in Emergency Callback Mode, which means we should show the callback
+      //    number.
+      boolean showCallbackNumber = hasProperty(Details.PROPERTY_EMERGENCY_CALLBACK_MODE);
+
+      if (isEmergencyCall() || showCallbackNumber) {
+        callbackNumber = getSubscriptionNumber();
+      } else {
+        StatusHints statusHints = getTelecomCall().getDetails().getStatusHints();
+        if (statusHints != null) {
+          Bundle extras = statusHints.getExtras();
+          if (extras != null) {
+            callbackNumber = extras.getString(TelecomManager.EXTRA_CALL_BACK_NUMBER);
+          }
+        }
+      }
+
+      String simNumber =
+          mContext.getSystemService(TelecomManager.class).getLine1Number(getAccountHandle());
+      if (!showCallbackNumber && PhoneNumberUtils.compare(callbackNumber, simNumber)) {
+        LogUtil.v(
+            "DialerCall.getCallbackNumber",
+            "numbers are the same (and callback number is not being forced to show);"
+                + " not showing the callback number");
+        callbackNumber = "";
+      }
+      if (callbackNumber == null) {
+        callbackNumber = "";
+      }
+    }
+    return callbackNumber;
+  }
+
+  private String getSubscriptionNumber() {
+    // If it's an emergency call, and they're not populating the callback number,
+    // then try to fall back to the phone sub info (to hopefully get the SIM's
+    // number directly from the telephony layer).
+    PhoneAccountHandle accountHandle = getAccountHandle();
+    if (accountHandle != null) {
+      PhoneAccount account =
+          mContext.getSystemService(TelecomManager.class).getPhoneAccount(accountHandle);
+      if (account != null) {
+        return getNumberFromHandle(account.getSubscriptionAddress());
+      }
+    }
+    return null;
+  }
+
+  /**
+   * Specifies whether a number is in the call history or not. {@link #CALL_HISTORY_STATUS_UNKNOWN}
+   * means there is no result.
+   */
+  @IntDef({
+    CALL_HISTORY_STATUS_UNKNOWN,
+    CALL_HISTORY_STATUS_PRESENT,
+    CALL_HISTORY_STATUS_NOT_PRESENT
+  })
+  @Retention(RetentionPolicy.SOURCE)
+  public @interface CallHistoryStatus {}
+
+  /* Defines different states of this call */
+  public static class State {
+
+    public static final int INVALID = 0;
+    public static final int NEW = 1; /* The call is new. */
+    public static final int IDLE = 2; /* The call is idle.  Nothing active */
+    public static final int ACTIVE = 3; /* There is an active call */
+    public static final int INCOMING = 4; /* A normal incoming phone call */
+    public static final int CALL_WAITING = 5; /* Incoming call while another is active */
+    public static final int DIALING = 6; /* An outgoing call during dial phase */
+    public static final int REDIALING = 7; /* Subsequent dialing attempt after a failure */
+    public static final int ONHOLD = 8; /* An active phone call placed on hold */
+    public static final int DISCONNECTING = 9; /* A call is being ended. */
+    public static final int DISCONNECTED = 10; /* State after a call disconnects */
+    public static final int CONFERENCED = 11; /* DialerCall part of a conference call */
+    public static final int SELECT_PHONE_ACCOUNT = 12; /* Waiting for account selection */
+    public static final int CONNECTING = 13; /* Waiting for Telecom broadcast to finish */
+    public static final int BLOCKED = 14; /* The number was found on the block list */
+    public static final int PULLING = 15; /* An external call being pulled to the device */
+
+    public static boolean isConnectingOrConnected(int state) {
+      switch (state) {
+        case ACTIVE:
+        case INCOMING:
+        case CALL_WAITING:
+        case CONNECTING:
+        case DIALING:
+        case PULLING:
+        case REDIALING:
+        case ONHOLD:
+        case CONFERENCED:
+          return true;
+        default:
+      }
+      return false;
+    }
+
+    public static boolean isDialing(int state) {
+      return state == DIALING || state == PULLING || state == REDIALING;
+    }
+
+    public static String toString(int state) {
+      switch (state) {
+        case INVALID:
+          return "INVALID";
+        case NEW:
+          return "NEW";
+        case IDLE:
+          return "IDLE";
+        case ACTIVE:
+          return "ACTIVE";
+        case INCOMING:
+          return "INCOMING";
+        case CALL_WAITING:
+          return "CALL_WAITING";
+        case DIALING:
+          return "DIALING";
+        case PULLING:
+          return "PULLING";
+        case REDIALING:
+          return "REDIALING";
+        case ONHOLD:
+          return "ONHOLD";
+        case DISCONNECTING:
+          return "DISCONNECTING";
+        case DISCONNECTED:
+          return "DISCONNECTED";
+        case CONFERENCED:
+          return "CONFERENCED";
+        case SELECT_PHONE_ACCOUNT:
+          return "SELECT_PHONE_ACCOUNT";
+        case CONNECTING:
+          return "CONNECTING";
+        case BLOCKED:
+          return "BLOCKED";
+        default:
+          return "UNKNOWN";
+      }
+    }
+  }
+
+  /**
+   * Defines different states of session modify requests, which are used to upgrade to video, or
+   * downgrade to audio.
+   */
+  @Retention(RetentionPolicy.SOURCE)
+  @IntDef({
+    SESSION_MODIFICATION_STATE_NO_REQUEST,
+    SESSION_MODIFICATION_STATE_WAITING_FOR_UPGRADE_TO_VIDEO_RESPONSE,
+    SESSION_MODIFICATION_STATE_REQUEST_FAILED,
+    SESSION_MODIFICATION_STATE_RECEIVED_UPGRADE_TO_VIDEO_REQUEST,
+    SESSION_MODIFICATION_STATE_UPGRADE_TO_VIDEO_REQUEST_TIMED_OUT,
+    SESSION_MODIFICATION_STATE_UPGRADE_TO_VIDEO_REQUEST_FAILED,
+    SESSION_MODIFICATION_STATE_REQUEST_REJECTED,
+    SESSION_MODIFICATION_STATE_WAITING_FOR_RESPONSE
+  })
+  public @interface SessionModificationState {}
+
+  public static final int SESSION_MODIFICATION_STATE_NO_REQUEST = 0;
+  public static final int SESSION_MODIFICATION_STATE_WAITING_FOR_UPGRADE_TO_VIDEO_RESPONSE = 1;
+  public static final int SESSION_MODIFICATION_STATE_REQUEST_FAILED = 2;
+  public static final int SESSION_MODIFICATION_STATE_RECEIVED_UPGRADE_TO_VIDEO_REQUEST = 3;
+  public static final int SESSION_MODIFICATION_STATE_UPGRADE_TO_VIDEO_REQUEST_TIMED_OUT = 4;
+  public static final int SESSION_MODIFICATION_STATE_UPGRADE_TO_VIDEO_REQUEST_FAILED = 5;
+  public static final int SESSION_MODIFICATION_STATE_REQUEST_REJECTED = 6;
+  public static final int SESSION_MODIFICATION_STATE_WAITING_FOR_RESPONSE = 7;
+
+  public static class VideoSettings {
+
+    public static final int CAMERA_DIRECTION_UNKNOWN = -1;
+    public static final int CAMERA_DIRECTION_FRONT_FACING = CameraCharacteristics.LENS_FACING_FRONT;
+    public static final int CAMERA_DIRECTION_BACK_FACING = CameraCharacteristics.LENS_FACING_BACK;
+
+    private int mCameraDirection = CAMERA_DIRECTION_UNKNOWN;
+
+    /**
+     * Gets the camera direction. if camera direction is set to CAMERA_DIRECTION_UNKNOWN, the video
+     * state of the call should be used to infer the camera direction.
+     *
+     * @see {@link CameraCharacteristics#LENS_FACING_FRONT}
+     * @see {@link CameraCharacteristics#LENS_FACING_BACK}
+     */
+    public int getCameraDir() {
+      return mCameraDirection;
+    }
+
+    /**
+     * Sets the camera direction. if camera direction is set to CAMERA_DIRECTION_UNKNOWN, the video
+     * state of the call should be used to infer the camera direction.
+     *
+     * @see {@link CameraCharacteristics#LENS_FACING_FRONT}
+     * @see {@link CameraCharacteristics#LENS_FACING_BACK}
+     */
+    public void setCameraDir(int cameraDirection) {
+      if (cameraDirection == CAMERA_DIRECTION_FRONT_FACING
+          || cameraDirection == CAMERA_DIRECTION_BACK_FACING) {
+        mCameraDirection = cameraDirection;
+      } else {
+        mCameraDirection = CAMERA_DIRECTION_UNKNOWN;
+      }
+    }
+
+    @Override
+    public String toString() {
+      return "(CameraDir:" + getCameraDir() + ")";
+    }
+  }
+
+  /**
+   * Tracks any state variables that is useful for logging. There is some amount of overlap with
+   * existing call member variables, but this duplication helps to ensure that none of these logging
+   * variables will interface with/and affect call logic.
+   */
+  public static class LogState {
+
+    public DisconnectCause disconnectCause;
+    public boolean isIncoming = false;
+    public int contactLookupResult = ContactLookupResult.Type.UNKNOWN_LOOKUP_RESULT_TYPE;
+    public CallSpecificAppData callSpecificAppData;
+    // If this was a conference call, the total number of calls involved in the conference.
+    public int conferencedCalls = 0;
+    public long duration = 0;
+    public boolean isLogged = false;
+
+    private static String lookupToString(int lookupType) {
+      switch (lookupType) {
+        case ContactLookupResult.Type.LOCAL_CONTACT:
+          return "Local";
+        case ContactLookupResult.Type.LOCAL_CACHE:
+          return "Cache";
+        case ContactLookupResult.Type.REMOTE:
+          return "Remote";
+        case ContactLookupResult.Type.EMERGENCY:
+          return "Emergency";
+        case ContactLookupResult.Type.VOICEMAIL:
+          return "Voicemail";
+        default:
+          return "Not found";
+      }
+    }
+
+    private static String initiationToString(CallSpecificAppData callSpecificAppData) {
+      if (callSpecificAppData == null) {
+        return "null";
+      }
+      switch (callSpecificAppData.callInitiationType) {
+        case CallInitiationType.Type.INCOMING_INITIATION:
+          return "Incoming";
+        case CallInitiationType.Type.DIALPAD:
+          return "Dialpad";
+        case CallInitiationType.Type.SPEED_DIAL:
+          return "Speed Dial";
+        case CallInitiationType.Type.REMOTE_DIRECTORY:
+          return "Remote Directory";
+        case CallInitiationType.Type.SMART_DIAL:
+          return "Smart Dial";
+        case CallInitiationType.Type.REGULAR_SEARCH:
+          return "Regular Search";
+        case CallInitiationType.Type.CALL_LOG:
+          return "DialerCall Log";
+        case CallInitiationType.Type.CALL_LOG_FILTER:
+          return "DialerCall Log Filter";
+        case CallInitiationType.Type.VOICEMAIL_LOG:
+          return "Voicemail Log";
+        case CallInitiationType.Type.CALL_DETAILS:
+          return "DialerCall Details";
+        case CallInitiationType.Type.QUICK_CONTACTS:
+          return "Quick Contacts";
+        case CallInitiationType.Type.EXTERNAL_INITIATION:
+          return "External";
+        case CallInitiationType.Type.LAUNCHER_SHORTCUT:
+          return "Launcher Shortcut";
+        default:
+          return "Unknown: " + callSpecificAppData.callInitiationType;
+      }
+    }
+
+    @Override
+    public String toString() {
+      return String.format(
+          Locale.US,
+          "["
+              + "%s, " // DisconnectCause toString already describes the object type
+              + "isIncoming: %s, "
+              + "contactLookup: %s, "
+              + "callInitiation: %s, "
+              + "duration: %s"
+              + "]",
+          disconnectCause,
+          isIncoming,
+          lookupToString(contactLookupResult),
+          initiationToString(callSpecificAppData),
+          duration);
+    }
+  }
+
+  /** Called when canned text responses have been loaded. */
+  public interface CannedTextResponsesLoadedListener {
+    void onCannedTextResponsesLoaded(DialerCall call);
+  }
+}