Gitiles
Code Review Sign In
LeafOS / LeafOS-Project / android_frameworks_base / 4a1d2779d551e7e37fb87b3bd8be4779eb30bff6 / . / telecomm / java / android / telecom / Connection.java
blob: 982293656858f95b9b8af3d7db32cc7694743495 [file] [log] [blame]
/*
* Copyright (C) 2014 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 android.telecom;
import com.android.internal.os.SomeArgs;
import com.android.internal.telecom.IVideoCallback;
import com.android.internal.telecom.IVideoProvider;
import android.annotation.IntDef;
import android.annotation.NonNull;
import android.annotation.Nullable;
import android.annotation.SystemApi;
import android.annotation.TestApi;
import android.app.Notification;
import android.content.Intent;
import android.hardware.camera2.CameraManager;
import android.net.Uri;
import android.os.Binder;
import android.os.Bundle;
import android.os.Handler;
import android.os.IBinder;
import android.os.Looper;
import android.os.Message;
import android.os.ParcelFileDescriptor;
import android.os.RemoteException;
import android.util.ArraySet;
import android.view.Surface;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import java.util.Set;
import java.util.concurrent.ConcurrentHashMap;
/**
* Represents a phone call or connection to a remote endpoint that carries voice and/or video
* traffic.
* <p>
* Implementations create a custom subclass of {@code Connection} and return it to the framework
* as the return value of
* {@link ConnectionService#onCreateIncomingConnection(PhoneAccountHandle, ConnectionRequest)}
* or
* {@link ConnectionService#onCreateOutgoingConnection(PhoneAccountHandle, ConnectionRequest)}.
* Implementations are then responsible for updating the state of the {@code Connection}, and
* must call {@link #destroy()} to signal to the framework that the {@code Connection} is no
* longer used and associated resources may be recovered.
* <p>
* Subclasses of {@code Connection} override the {@code on*} methods to provide the the
* {@link ConnectionService}'s implementation of calling functionality. The {@code on*} methods are
* called by Telecom to inform an instance of a {@code Connection} of actions specific to that
* {@code Connection} instance.
* <p>
* Basic call support requires overriding the following methods: {@link #onAnswer()},
* {@link #onDisconnect()}, {@link #onReject()}, {@link #onAbort()}
* <p>
* Where a {@code Connection} has {@link #CAPABILITY_SUPPORT_HOLD}, the {@link #onHold()} and
* {@link #onUnhold()} methods should be overridden to provide hold support for the
* {@code Connection}.
* <p>
* Where a {@code Connection} supports a variation of video calling (e.g. the
* {@code CAPABILITY_SUPPORTS_VT_*} capability bits), {@link #onAnswer(int)} should be overridden
* to support answering a call as a video call.
* <p>
* Where a {@code Connection} has {@link #PROPERTY_IS_EXTERNAL_CALL} and
* {@link #CAPABILITY_CAN_PULL_CALL}, {@link #onPullExternalCall()} should be overridden to provide
* support for pulling the external call.
* <p>
* Where a {@code Connection} supports conference calling {@link #onSeparate()} should be
* overridden.
* <p>
* There are a number of other {@code on*} methods which a {@code Connection} can choose to
* implement, depending on whether it is concerned with the associated calls from Telecom. If,
* for example, call events from a {@link InCallService} are handled,
* {@link #onCallEvent(String, Bundle)} should be overridden. Another example is
* {@link #onExtrasChanged(Bundle)}, which should be overridden if the {@code Connection} wishes to
* make use of extra information provided via the {@link Call#putExtras(Bundle)} and
* {@link Call#removeExtras(String...)} methods.
*/
public abstract class Connection extends Conferenceable {
/**
* The connection is initializing. This is generally the first state for a {@code Connection}
* returned by a {@link ConnectionService}.
*/
public static final int STATE_INITIALIZING = 0;
/**
* The connection is new and not connected.
*/
public static final int STATE_NEW = 1;
/**
* An incoming connection is in the ringing state. During this state, the user's ringer or
* vibration feature will be activated.
*/
public static final int STATE_RINGING = 2;
/**
* An outgoing connection is in the dialing state. In this state the other party has not yet
* answered the call and the user traditionally hears a ringback tone.
*/
public static final int STATE_DIALING = 3;
/**
* A connection is active. Both parties are connected to the call and can actively communicate.
*/
public static final int STATE_ACTIVE = 4;
/**
* A connection is on hold.
*/
public static final int STATE_HOLDING = 5;
/**
* A connection has been disconnected. This is the final state once the user has been
* disconnected from a call either locally, remotely or by an error in the service.
*/
public static final int STATE_DISCONNECTED = 6;
/**
* The state of an external connection which is in the process of being pulled from a remote
* device to the local device.
* <p>
* A connection can only be in this state if the {@link #PROPERTY_IS_EXTERNAL_CALL} property and
* {@link #CAPABILITY_CAN_PULL_CALL} capability bits are set on the connection.
*/
public static final int STATE_PULLING_CALL = 7;
/**
* Connection can currently be put on hold or unheld. This is distinct from
* {@link #CAPABILITY_SUPPORT_HOLD} in that although a connection may support 'hold' most times,
* it does not at the moment support the function. This can be true while the call is in the
* state {@link #STATE_DIALING}, for example. During this condition, an in-call UI may
* display a disabled 'hold' button.
*/
public static final int CAPABILITY_HOLD = 0x00000001;
/** Connection supports the hold feature. */
public static final int CAPABILITY_SUPPORT_HOLD = 0x00000002;
/**
* Connections within a conference can be merged. A {@link ConnectionService} has the option to
* add a {@link Conference} before the child {@link Connection}s are merged. This is how
* CDMA-based {@link Connection}s are implemented. For these unmerged {@link Conference}s, this
* capability allows a merge button to be shown while the conference is in the foreground
* of the in-call UI.
* <p>
* This is only intended for use by a {@link Conference}.
*/
public static final int CAPABILITY_MERGE_CONFERENCE = 0x00000004;
/**
* Connections within a conference can be swapped between foreground and background.
* See {@link #CAPABILITY_MERGE_CONFERENCE} for additional information.
* <p>
* This is only intended for use by a {@link Conference}.
*/
public static final int CAPABILITY_SWAP_CONFERENCE = 0x00000008;
/**
* @hide
*/
public static final int CAPABILITY_UNUSED = 0x00000010;
/** Connection supports responding via text option. */
public static final int CAPABILITY_RESPOND_VIA_TEXT = 0x00000020;
/** Connection can be muted. */
public static final int CAPABILITY_MUTE = 0x00000040;
/**
* Connection supports conference management. This capability only applies to
* {@link Conference}s which can have {@link Connection}s as children.
*/
public static final int CAPABILITY_MANAGE_CONFERENCE = 0x00000080;
/**
* Local device supports receiving video.
*/
public static final int CAPABILITY_SUPPORTS_VT_LOCAL_RX = 0x00000100;
/**
* Local device supports transmitting video.
*/
public static final int CAPABILITY_SUPPORTS_VT_LOCAL_TX = 0x00000200;
/**
* Local device supports bidirectional video calling.
*/
public static final int CAPABILITY_SUPPORTS_VT_LOCAL_BIDIRECTIONAL =
CAPABILITY_SUPPORTS_VT_LOCAL_RX | CAPABILITY_SUPPORTS_VT_LOCAL_TX;
/**
* Remote device supports receiving video.
*/
public static final int CAPABILITY_SUPPORTS_VT_REMOTE_RX = 0x00000400;
/**
* Remote device supports transmitting video.
*/
public static final int CAPABILITY_SUPPORTS_VT_REMOTE_TX = 0x00000800;
/**
* Remote device supports bidirectional video calling.
*/
public static final int CAPABILITY_SUPPORTS_VT_REMOTE_BIDIRECTIONAL =
CAPABILITY_SUPPORTS_VT_REMOTE_RX | CAPABILITY_SUPPORTS_VT_REMOTE_TX;
/**
* Connection is able to be separated from its parent {@code Conference}, if any.
*/
public static final int CAPABILITY_SEPARATE_FROM_CONFERENCE = 0x00001000;
/**
* Connection is able to be individually disconnected when in a {@code Conference}.
*/
public static final int CAPABILITY_DISCONNECT_FROM_CONFERENCE = 0x00002000;
/**
* Un-used.
* @hide
*/
public static final int CAPABILITY_UNUSED_2 = 0x00004000;
/**
* Un-used.
* @hide
*/
public static final int CAPABILITY_UNUSED_3 = 0x00008000;
/**
* Un-used.
* @hide
*/
public static final int CAPABILITY_UNUSED_4 = 0x00010000;
/**
* Un-used.
* @hide
*/
public static final int CAPABILITY_UNUSED_5 = 0x00020000;
/**
* Speed up audio setup for MT call.
* @hide
*/
public static final int CAPABILITY_SPEED_UP_MT_AUDIO = 0x00040000;
/**
* Call can be upgraded to a video call.
*/
public static final int CAPABILITY_CAN_UPGRADE_TO_VIDEO = 0x00080000;
/**
* For video calls, indicates whether the outgoing video for the call can be paused using
* the {@link android.telecom.VideoProfile#STATE_PAUSED} VideoState.
*/
public static final int CAPABILITY_CAN_PAUSE_VIDEO = 0x00100000;
/**
* For a conference, indicates the conference will not have child connections.
* <p>
* An example of a conference with child connections is a GSM conference call, where the radio
* retains connections to the individual participants of the conference. Another example is an
* IMS conference call where conference event package functionality is supported; in this case
* the conference server ensures the radio is aware of the participants in the conference, which
* are represented by child connections.
* <p>
* An example of a conference with no child connections is an IMS conference call with no
* conference event package support. Such a conference is represented by the radio as a single
* connection to the IMS conference server.
* <p>
* Indicating whether a conference has children or not is important to help user interfaces
* visually represent a conference. A conference with no children, for example, will have the
* conference connection shown in the list of calls on a Bluetooth device, where if the
* conference has children, only the children will be shown in the list of calls on a Bluetooth
* device.
* @hide
*/
public static final int CAPABILITY_CONFERENCE_HAS_NO_CHILDREN = 0x00200000;
/**
* Indicates that the connection itself wants to handle any sort of reply response, rather than
* relying on SMS.
*/
public static final int CAPABILITY_CAN_SEND_RESPONSE_VIA_CONNECTION = 0x00400000;
/**
* When set, prevents a video call from being downgraded to an audio-only call.
* <p>
* Should be set when the VideoState has the {@link VideoProfile#STATE_TX_ENABLED} or
* {@link VideoProfile#STATE_RX_ENABLED} bits set to indicate that the connection cannot be
* downgraded from a video call back to a VideoState of
* {@link VideoProfile#STATE_AUDIO_ONLY}.
* <p>
* Intuitively, a call which can be downgraded to audio should also have local and remote
* video
* capabilities (see {@link #CAPABILITY_SUPPORTS_VT_LOCAL_BIDIRECTIONAL} and
* {@link #CAPABILITY_SUPPORTS_VT_REMOTE_BIDIRECTIONAL}).
*/
public static final int CAPABILITY_CANNOT_DOWNGRADE_VIDEO_TO_AUDIO = 0x00800000;
/**
* When set for an external connection, indicates that this {@code Connection} can be pulled
* from a remote device to the current device.
* <p>
* Should only be set on a {@code Connection} where {@link #PROPERTY_IS_EXTERNAL_CALL}
* is set.
*/
public static final int CAPABILITY_CAN_PULL_CALL = 0x01000000;
//**********************************************************************************************
// Next CAPABILITY value: 0x02000000
//**********************************************************************************************
/**
* Indicates that the current device callback number should be shown.
*
* @hide
*/
public static final int PROPERTY_EMERGENCY_CALLBACK_MODE = 1<<0;
/**
* Whether the call is a generic conference, where we do not know the precise state of
* participants in the conference (eg. on CDMA).
*
* @hide
*/
public static final int PROPERTY_GENERIC_CONFERENCE = 1<<1;
/**
* Connection is using high definition audio.
* @hide
*/
public static final int PROPERTY_HIGH_DEF_AUDIO = 1<<2;
/**
* Connection is using WIFI.
* @hide
*/
public static final int PROPERTY_WIFI = 1<<3;
/**
* When set, indicates that the {@code Connection} does not actually exist locally for the
* {@link ConnectionService}.
* <p>
* Consider, for example, a scenario where a user has two devices with the same phone number.
* When a user places a call on one devices, the telephony stack can represent that call on the
* other device by adding is to the {@link ConnectionService} with the
* {@link #PROPERTY_IS_EXTERNAL_CALL} capability set.
* <p>
* An {@link ConnectionService} should not assume that all {@link InCallService}s will handle
* external connections. Only those {@link InCallService}s which have the
* {@link TelecomManager#METADATA_INCLUDE_EXTERNAL_CALLS} metadata set to {@code true} in its
* manifest will see external connections.
*/
public static final int PROPERTY_IS_EXTERNAL_CALL = 1<<4;
/**
* Indicates that the connection has CDMA Enhanced Voice Privacy enabled.
*/
public static final int PROPERTY_HAS_CDMA_VOICE_PRIVACY = 1<<5;
/**
* Indicates that the connection represents a downgraded IMS conference.
* @hide
*/
public static final int PROPERTY_IS_DOWNGRADED_CONFERENCE = 1<<6;
/**
* Set by the framework to indicate that the {@link Connection} originated from a self-managed
* {@link ConnectionService}.
* <p>
* See {@link PhoneAccount#CAPABILITY_SELF_MANAGED}.
*/
public static final int PROPERTY_SELF_MANAGED = 1<<7;
/**
* Set by the framework to indicate that a connection has an active RTT session associated with
* it.
* @hide
*/
@TestApi
public static final int PROPERTY_IS_RTT = 1 << 8;
//**********************************************************************************************
// Next PROPERTY value: 1<<9
//**********************************************************************************************
/**
* Connection extra key used to store the last forwarded number associated with the current
* connection. Used to communicate to the user interface that the connection was forwarded via
* the specified number.
*/
public static final String EXTRA_LAST_FORWARDED_NUMBER =
"android.telecom.extra.LAST_FORWARDED_NUMBER";
/**
* Connection extra key used to store a child number associated with the current connection.
* Used to communicate to the user interface that the connection was received via
* a child address (i.e. phone number) associated with the {@link PhoneAccount}'s primary
* address.
*/
public static final String EXTRA_CHILD_ADDRESS = "android.telecom.extra.CHILD_ADDRESS";
/**
* Connection extra key used to store the subject for an incoming call. The user interface can
* query this extra and display its contents for incoming calls. Will only be used if the
* {@link PhoneAccount} supports the capability {@link PhoneAccount#CAPABILITY_CALL_SUBJECT}.
*/
public static final String EXTRA_CALL_SUBJECT = "android.telecom.extra.CALL_SUBJECT";
/**
* Boolean connection extra key set on a {@link Connection} in
* {@link Connection#STATE_RINGING} state to indicate that answering the call will cause the
* current active foreground call to be dropped.
*/
public static final String EXTRA_ANSWERING_DROPS_FG_CALL =
"android.telecom.extra.ANSWERING_DROPS_FG_CALL";
/**
* String connection extra key set on a {@link Connection} in {@link Connection#STATE_RINGING}
* state to indicate the name of the third-party app which is responsible for the current
* foreground call.
* <p>
* Used when {@link #EXTRA_ANSWERING_DROPS_FG_CALL} is true to ensure that the default Phone app
* is able to inform the user that answering the new incoming call will cause a call owned by
* another app to be dropped when the incoming call is answered.
*/
public static final String EXTRA_ANSWERING_DROPS_FG_CALL_APP_NAME =
"android.telecom.extra.ANSWERING_DROPS_FG_CALL_APP_NAME";
/**
* Boolean connection extra key on a {@link Connection} which indicates that adding an
* additional call is disallowed.
* @hide
*/
public static final String EXTRA_DISABLE_ADD_CALL =
"android.telecom.extra.DISABLE_ADD_CALL";
/**
* String connection extra key on a {@link Connection} or {@link Conference} which contains the
* original Connection ID associated with the connection. Used in
* {@link RemoteConnectionService} to track the Connection ID which was originally assigned to a
* connection/conference added via
* {@link ConnectionService#addExistingConnection(PhoneAccountHandle, Connection)} and
* {@link ConnectionService#addConference(Conference)} APIs. This is important to pass to
* Telecom for when it deals with RemoteConnections. When the ConnectionManager wraps the
* {@link RemoteConnection} and {@link RemoteConference} and adds it to Telecom, there needs to
* be a way to ensure that we don't add the connection again as a duplicate.
* <p>
* For example, the TelephonyCS calls addExistingConnection for a Connection with ID
* {@code TelephonyCS@1}. The ConnectionManager learns of this via
* {@link ConnectionService#onRemoteExistingConnectionAdded(RemoteConnection)}, and wraps this
* in a new {@link Connection} which it adds to Telecom via
* {@link ConnectionService#addExistingConnection(PhoneAccountHandle, Connection)}. As part of
* this process, the wrapped RemoteConnection gets assigned a new ID (e.g. {@code ConnMan@1}).
* The TelephonyCS will ALSO try to add the existing connection to Telecom, except with the
* ID it originally referred to the connection as. Thus Telecom needs to know that the
* Connection with ID {@code ConnMan@1} is really the same as {@code TelephonyCS@1}.
* @hide
*/
public static final String EXTRA_ORIGINAL_CONNECTION_ID =
"android.telecom.extra.ORIGINAL_CONNECTION_ID";
/**
* Connection event used to inform Telecom that it should play the on hold tone. This is used
* to play a tone when the peer puts the current call on hold. Sent to Telecom via
* {@link #sendConnectionEvent(String, Bundle)}.
* @hide
*/
public static final String EVENT_ON_HOLD_TONE_START =
"android.telecom.event.ON_HOLD_TONE_START";
/**
* Connection event used to inform Telecom that it should stop the on hold tone. This is used
* to stop a tone when the peer puts the current call on hold. Sent to Telecom via
* {@link #sendConnectionEvent(String, Bundle)}.
* @hide
*/
public static final String EVENT_ON_HOLD_TONE_END =
"android.telecom.event.ON_HOLD_TONE_END";
/**
* Connection event used to inform {@link InCallService}s when pulling of an external call has
* failed. The user interface should inform the user of the error.
* <p>
* Expected to be used by the {@link ConnectionService} when the {@link Call#pullExternalCall()}
* API is called on a {@link Call} with the properties
* {@link Call.Details#PROPERTY_IS_EXTERNAL_CALL} and
* {@link Call.Details#CAPABILITY_CAN_PULL_CALL}, but the {@link ConnectionService} could not
* pull the external call due to an error condition.
* <p>
* Sent via {@link #sendConnectionEvent(String, Bundle)}. The {@link Bundle} parameter is
* expected to be null when this connection event is used.
*/
public static final String EVENT_CALL_PULL_FAILED = "android.telecom.event.CALL_PULL_FAILED";
/**
* Connection event used to inform {@link InCallService}s when the merging of two calls has
* failed. The User Interface should use this message to inform the user of the error.
* <p>
* Sent via {@link #sendConnectionEvent(String, Bundle)}. The {@link Bundle} parameter is
* expected to be null when this connection event is used.
*/
public static final String EVENT_CALL_MERGE_FAILED = "android.telecom.event.CALL_MERGE_FAILED";
/**
* Connection event used to inform {@link InCallService}s when a call has been put on hold by
* the remote party.
* <p>
* This is different than the {@link Connection#STATE_HOLDING} state which indicates that the
* call is being held locally on the device. When a capable {@link ConnectionService} receives
* signalling to indicate that the remote party has put the call on hold, it can send this
* connection event.
* @hide
*/
public static final String EVENT_CALL_REMOTELY_HELD =
"android.telecom.event.CALL_REMOTELY_HELD";
/**
* Connection event used to inform {@link InCallService}s when a call which was remotely held
* (see {@link #EVENT_CALL_REMOTELY_HELD}) has been un-held by the remote party.
* <p>
* This is different than the {@link Connection#STATE_HOLDING} state which indicates that the
* call is being held locally on the device. When a capable {@link ConnectionService} receives
* signalling to indicate that the remote party has taken the call off hold, it can send this
* connection event.
* @hide
*/
public static final String EVENT_CALL_REMOTELY_UNHELD =
"android.telecom.event.CALL_REMOTELY_UNHELD";
// Flag controlling whether PII is emitted into the logs
private static final boolean PII_DEBUG = Log.isLoggable(android.util.Log.DEBUG);
/**
* Whether the given capabilities support the specified capability.
*
* @param capabilities A capability bit field.
* @param capability The capability to check capabilities for.
* @return Whether the specified capability is supported.
* @hide
*/
public static boolean can(int capabilities, int capability) {
return (capabilities & capability) == capability;
}
/**
* Whether the capabilities of this {@code Connection} supports the specified capability.
*
* @param capability The capability to check capabilities for.
* @return Whether the specified capability is supported.
* @hide
*/
public boolean can(int capability) {
return can(mConnectionCapabilities, capability);
}
/**
* Removes the specified capability from the set of capabilities of this {@code Connection}.
*
* @param capability The capability to remove from the set.
* @hide
*/
public void removeCapability(int capability) {
mConnectionCapabilities &= ~capability;
}
/**
* Adds the specified capability to the set of capabilities of this {@code Connection}.
*
* @param capability The capability to add to the set.
* @hide
*/
public void addCapability(int capability) {
mConnectionCapabilities |= capability;
}
/**
* Renders a set of capability bits ({@code CAPABILITY_*}) as a human readable string.
*
* @param capabilities A capability bit field.
* @return A human readable string representation.
*/
public static String capabilitiesToString(int capabilities) {
return capabilitiesToStringInternal(capabilities, true /* isLong */);
}
/**
* Renders a set of capability bits ({@code CAPABILITY_*}) as a *short* human readable
* string.
*
* @param capabilities A capability bit field.
* @return A human readable string representation.
* @hide
*/
public static String capabilitiesToStringShort(int capabilities) {
return capabilitiesToStringInternal(capabilities, false /* isLong */);
}
private static String capabilitiesToStringInternal(int capabilities, boolean isLong) {
StringBuilder builder = new StringBuilder();
builder.append("[");
if (isLong) {
builder.append("Capabilities:");
}
if (can(capabilities, CAPABILITY_HOLD)) {
builder.append(isLong ? " CAPABILITY_HOLD" : " hld");
}
if (can(capabilities, CAPABILITY_SUPPORT_HOLD)) {
builder.append(isLong ? " CAPABILITY_SUPPORT_HOLD" : " sup_hld");
}
if (can(capabilities, CAPABILITY_MERGE_CONFERENCE)) {
builder.append(isLong ? " CAPABILITY_MERGE_CONFERENCE" : " mrg_cnf");
}
if (can(capabilities, CAPABILITY_SWAP_CONFERENCE)) {
builder.append(isLong ? " CAPABILITY_SWAP_CONFERENCE" : " swp_cnf");
}
if (can(capabilities, CAPABILITY_RESPOND_VIA_TEXT)) {
builder.append(isLong ? " CAPABILITY_RESPOND_VIA_TEXT" : " txt");
}
if (can(capabilities, CAPABILITY_MUTE)) {
builder.append(isLong ? " CAPABILITY_MUTE" : " mut");
}
if (can(capabilities, CAPABILITY_MANAGE_CONFERENCE)) {
builder.append(isLong ? " CAPABILITY_MANAGE_CONFERENCE" : " mng_cnf");
}
if (can(capabilities, CAPABILITY_SUPPORTS_VT_LOCAL_RX)) {
builder.append(isLong ? " CAPABILITY_SUPPORTS_VT_LOCAL_RX" : " VTlrx");
}
if (can(capabilities, CAPABILITY_SUPPORTS_VT_LOCAL_TX)) {
builder.append(isLong ? " CAPABILITY_SUPPORTS_VT_LOCAL_TX" : " VTltx");
}
if (can(capabilities, CAPABILITY_SUPPORTS_VT_LOCAL_BIDIRECTIONAL)) {
builder.append(isLong ? " CAPABILITY_SUPPORTS_VT_LOCAL_BIDIRECTIONAL" : " VTlbi");
}
if (can(capabilities, CAPABILITY_SUPPORTS_VT_REMOTE_RX)) {
builder.append(isLong ? " CAPABILITY_SUPPORTS_VT_REMOTE_RX" : " VTrrx");
}
if (can(capabilities, CAPABILITY_SUPPORTS_VT_REMOTE_TX)) {
builder.append(isLong ? " CAPABILITY_SUPPORTS_VT_REMOTE_TX" : " VTrtx");
}
if (can(capabilities, CAPABILITY_SUPPORTS_VT_REMOTE_BIDIRECTIONAL)) {
builder.append(isLong ? " CAPABILITY_SUPPORTS_VT_REMOTE_BIDIRECTIONAL" : " VTrbi");
}
if (can(capabilities, CAPABILITY_CANNOT_DOWNGRADE_VIDEO_TO_AUDIO)) {
builder.append(isLong ? " CAPABILITY_CANNOT_DOWNGRADE_VIDEO_TO_AUDIO" : " !v2a");
}
if (can(capabilities, CAPABILITY_SPEED_UP_MT_AUDIO)) {
builder.append(isLong ? " CAPABILITY_SPEED_UP_MT_AUDIO" : " spd_aud");
}
if (can(capabilities, CAPABILITY_CAN_UPGRADE_TO_VIDEO)) {
builder.append(isLong ? " CAPABILITY_CAN_UPGRADE_TO_VIDEO" : " a2v");
}
if (can(capabilities, CAPABILITY_CAN_PAUSE_VIDEO)) {
builder.append(isLong ? " CAPABILITY_CAN_PAUSE_VIDEO" : " paus_VT");
}
if (can(capabilities, CAPABILITY_CONFERENCE_HAS_NO_CHILDREN)) {
builder.append(isLong ? " CAPABILITY_SINGLE_PARTY_CONFERENCE" : " 1p_cnf");
}
if (can(capabilities, CAPABILITY_CAN_SEND_RESPONSE_VIA_CONNECTION)) {
builder.append(isLong ? " CAPABILITY_CAN_SEND_RESPONSE_VIA_CONNECTION" : " rsp_by_con");
}
if (can(capabilities, CAPABILITY_CAN_PULL_CALL)) {
builder.append(isLong ? " CAPABILITY_CAN_PULL_CALL" : " pull");
}
builder.append("]");
return builder.toString();
}
/**
* Renders a set of property bits ({@code PROPERTY_*}) as a human readable string.
*
* @param properties A property bit field.
* @return A human readable string representation.
*/
public static String propertiesToString(int properties) {
return propertiesToStringInternal(properties, true /* isLong */);
}
/**
* Renders a set of property bits ({@code PROPERTY_*}) as a *short* human readable string.
*
* @param properties A property bit field.
* @return A human readable string representation.
* @hide
*/
public static String propertiesToStringShort(int properties) {
return propertiesToStringInternal(properties, false /* isLong */);
}
private static String propertiesToStringInternal(int properties, boolean isLong) {
StringBuilder builder = new StringBuilder();
builder.append("[");
if (isLong) {
builder.append("Properties:");
}
if (can(properties, PROPERTY_SELF_MANAGED)) {
builder.append(isLong ? " PROPERTY_SELF_MANAGED" : " self_mng");
}
if (can(properties, PROPERTY_EMERGENCY_CALLBACK_MODE)) {
builder.append(isLong ? " PROPERTY_EMERGENCY_CALLBACK_MODE" : " ecbm");
}
if (can(properties, PROPERTY_HIGH_DEF_AUDIO)) {
builder.append(isLong ? " PROPERTY_HIGH_DEF_AUDIO" : " HD");
}
if (can(properties, PROPERTY_WIFI)) {
builder.append(isLong ? " PROPERTY_WIFI" : " wifi");
}
if (can(properties, PROPERTY_GENERIC_CONFERENCE)) {
builder.append(isLong ? " PROPERTY_GENERIC_CONFERENCE" : " gen_conf");
}
if (can(properties, PROPERTY_IS_EXTERNAL_CALL)) {
builder.append(isLong ? " PROPERTY_IS_EXTERNAL_CALL" : " xtrnl");
}
if (can(properties, PROPERTY_HAS_CDMA_VOICE_PRIVACY)) {
builder.append(isLong ? " PROPERTY_HAS_CDMA_VOICE_PRIVACY" : " priv");
}
builder.append("]");
return builder.toString();
}
/** @hide */
public abstract static class Listener {
public void onStateChanged(Connection c, int state) {}
public void onAddressChanged(Connection c, Uri newAddress, int presentation) {}
public void onCallerDisplayNameChanged(
Connection c, String callerDisplayName, int presentation) {}
public void onVideoStateChanged(Connection c, int videoState) {}
public void onDisconnected(Connection c, DisconnectCause disconnectCause) {}
public void onPostDialWait(Connection c, String remaining) {}
public void onPostDialChar(Connection c, char nextChar) {}
public void onRingbackRequested(Connection c, boolean ringback) {}
public void onDestroyed(Connection c) {}
public void onConnectionCapabilitiesChanged(Connection c, int capabilities) {}
public void onConnectionPropertiesChanged(Connection c, int properties) {}
public void onSupportedAudioRoutesChanged(Connection c, int supportedAudioRoutes) {}
public void onVideoProviderChanged(
Connection c, VideoProvider videoProvider) {}
public void onAudioModeIsVoipChanged(Connection c, boolean isVoip) {}
public void onStatusHintsChanged(Connection c, StatusHints statusHints) {}
public void onConferenceablesChanged(
Connection c, List<Conferenceable> conferenceables) {}
public void onConferenceChanged(Connection c, Conference conference) {}
/** @hide */
public void onConferenceParticipantsChanged(Connection c,
List<ConferenceParticipant> participants) {}
public void onConferenceStarted() {}
public void onConferenceMergeFailed(Connection c) {}
public void onExtrasChanged(Connection c, Bundle extras) {}
public void onExtrasRemoved(Connection c, List<String> keys) {}
public void onConnectionEvent(Connection c, String event, Bundle extras) {}
/** @hide */
public void onConferenceSupportedChanged(Connection c, boolean isConferenceSupported) {}
public void onAudioRouteChanged(Connection c, int audioRoute) {}
public void onRttInitiationSuccess(Connection c) {}
public void onRttInitiationFailure(Connection c, int reason) {}
public void onRttSessionRemotelyTerminated(Connection c) {}
public void onRemoteRttRequest(Connection c) {}
}
/**
* Provides methods to read and write RTT data to/from the in-call app.
* @hide
*/
@TestApi
public static final class RttTextStream {
private static final int READ_BUFFER_SIZE = 1000;
private final InputStreamReader mPipeFromInCall;
private final OutputStreamWriter mPipeToInCall;
private final ParcelFileDescriptor mFdFromInCall;
private final ParcelFileDescriptor mFdToInCall;
private char[] mReadBuffer = new char[READ_BUFFER_SIZE];
/**
* @hide
*/
public RttTextStream(ParcelFileDescriptor toInCall, ParcelFileDescriptor fromInCall) {
mFdFromInCall = fromInCall;
mFdToInCall = toInCall;
mPipeFromInCall = new InputStreamReader(
new ParcelFileDescriptor.AutoCloseInputStream(fromInCall));
mPipeToInCall = new OutputStreamWriter(
new ParcelFileDescriptor.AutoCloseOutputStream(toInCall));
}
/**
* Writes the string {@param input} into the text stream to the UI for this RTT call. Since
* RTT transmits text in real-time, this method should be called as often as text snippets
* are received from the remote user, even if it is only one character.
*
* This method is not thread-safe -- calling it from multiple threads simultaneously may
* lead to interleaved text.
* @param input The message to send to the in-call app.
*/
public void write(String input) throws IOException {
mPipeToInCall.write(input);
mPipeToInCall.flush();
}
/**
* Reads a string from the in-call app, blocking if there is no data available. Returns
* {@code null} if the RTT conversation has been terminated and there is no further data
* to read.
*
* This method is not thread-safe -- calling it from multiple threads simultaneously may
* lead to interleaved text.
* @return A string containing text entered by the user, or {@code null} if the
* conversation has been terminated or if there was an error while reading.
*/
public String read() throws IOException {
int numRead = mPipeFromInCall.read(mReadBuffer, 0, READ_BUFFER_SIZE);
if (numRead < 0) {
return null;
}
return new String(mReadBuffer, 0, numRead);
}
/**
* Non-blocking version of {@link #read()}. Returns {@code null} if there is nothing to
* be read.
* @return A string containing text entered by the user, or {@code null} if the user has
* not entered any new text yet.
*/
public String readImmediately() throws IOException {
if (mPipeFromInCall.ready()) {
return read();
} else {
return null;
}
}
/** @hide */
public ParcelFileDescriptor getFdFromInCall() {
return mFdFromInCall;
}
/** @hide */
public ParcelFileDescriptor getFdToInCall() {
return mFdToInCall;
}
}
/**
* Provides constants to represent the results of responses to session modify requests sent via
* {@link Call#sendRttRequest()}
*/
public static final class RttModifyStatus {
/**
* Session modify request was successful.
*/
public static final int SESSION_MODIFY_REQUEST_SUCCESS = 1;
/**
* Session modify request failed.
*/
public static final int SESSION_MODIFY_REQUEST_FAIL = 2;
/**
* Session modify request ignored due to invalid parameters.
*/
public static final int SESSION_MODIFY_REQUEST_INVALID = 3;
/**
* Session modify request timed out.
*/
public static final int SESSION_MODIFY_REQUEST_TIMED_OUT = 4;
/**
* Session modify request rejected by remote user.
*/
public static final int SESSION_MODIFY_REQUEST_REJECTED_BY_REMOTE = 5;
}
/**
* Provides a means of controlling the video session associated with a {@link Connection}.
* <p>
* Implementations create a custom subclass of {@link VideoProvider} and the
* {@link ConnectionService} creates an instance sets it on the {@link Connection} using
* {@link Connection#setVideoProvider(VideoProvider)}. Any connection which supports video
* should set the {@link VideoProvider}.
* <p>
* The {@link VideoProvider} serves two primary purposes: it provides a means for Telecom and
* {@link InCallService} implementations to issue requests related to the video session;
* it provides a means for the {@link ConnectionService} to report events and information
* related to the video session to Telecom and the {@link InCallService} implementations.
* <p>
* {@link InCallService} implementations interact with the {@link VideoProvider} via
* {@link android.telecom.InCallService.VideoCall}.
*/
public static abstract class VideoProvider {
/**
* Video is not being received (no protocol pause was issued).
* @see #handleCallSessionEvent(int)
*/
public static final int SESSION_EVENT_RX_PAUSE = 1;
/**
* Video reception has resumed after a {@link #SESSION_EVENT_RX_PAUSE}.
* @see #handleCallSessionEvent(int)
*/
public static final int SESSION_EVENT_RX_RESUME = 2;
/**
* Video transmission has begun. This occurs after a negotiated start of video transmission
* when the underlying protocol has actually begun transmitting video to the remote party.
* @see #handleCallSessionEvent(int)
*/
public static final int SESSION_EVENT_TX_START = 3;
/**
* Video transmission has stopped. This occurs after a negotiated stop of video transmission
* when the underlying protocol has actually stopped transmitting video to the remote party.
* @see #handleCallSessionEvent(int)
*/
public static final int SESSION_EVENT_TX_STOP = 4;
/**
* A camera failure has occurred for the selected camera. The {@link VideoProvider} can use
* this as a cue to inform the user the camera is not available.
* @see #handleCallSessionEvent(int)
*/
public static final int SESSION_EVENT_CAMERA_FAILURE = 5;
/**
* Issued after {@link #SESSION_EVENT_CAMERA_FAILURE} when the camera is once again ready
* for operation. The {@link VideoProvider} can use this as a cue to inform the user that
* the camera has become available again.
* @see #handleCallSessionEvent(int)
*/
public static final int SESSION_EVENT_CAMERA_READY = 6;
/**
* Session event raised by Telecom when
* {@link android.telecom.InCallService.VideoCall#setCamera(String)} is called and the
* caller does not have the necessary {@link android.Manifest.permission#CAMERA} permission.
* @see #handleCallSessionEvent(int)
*/
public static final int SESSION_EVENT_CAMERA_PERMISSION_ERROR = 7;
/**
* Session modify request was successful.
* @see #receiveSessionModifyResponse(int, VideoProfile, VideoProfile)
*/
public static final int SESSION_MODIFY_REQUEST_SUCCESS = 1;
/**
* Session modify request failed.
* @see #receiveSessionModifyResponse(int, VideoProfile, VideoProfile)
*/
public static final int SESSION_MODIFY_REQUEST_FAIL = 2;
/**
* Session modify request ignored due to invalid parameters.
* @see #receiveSessionModifyResponse(int, VideoProfile, VideoProfile)
*/
public static final int SESSION_MODIFY_REQUEST_INVALID = 3;
/**
* Session modify request timed out.
* @see #receiveSessionModifyResponse(int, VideoProfile, VideoProfile)
*/
public static final int SESSION_MODIFY_REQUEST_TIMED_OUT = 4;
/**
* Session modify request rejected by remote user.
* @see #receiveSessionModifyResponse(int, VideoProfile, VideoProfile)
*/
public static final int SESSION_MODIFY_REQUEST_REJECTED_BY_REMOTE = 5;
private static final int MSG_ADD_VIDEO_CALLBACK = 1;
private static final int MSG_SET_CAMERA = 2;
private static final int MSG_SET_PREVIEW_SURFACE = 3;
private static final int MSG_SET_DISPLAY_SURFACE = 4;
private static final int MSG_SET_DEVICE_ORIENTATION = 5;
private static final int MSG_SET_ZOOM = 6;
private static final int MSG_SEND_SESSION_MODIFY_REQUEST = 7;
private static final int MSG_SEND_SESSION_MODIFY_RESPONSE = 8;
private static final int MSG_REQUEST_CAMERA_CAPABILITIES = 9;
private static final int MSG_REQUEST_CONNECTION_DATA_USAGE = 10;
private static final int MSG_SET_PAUSE_IMAGE = 11;
private static final int MSG_REMOVE_VIDEO_CALLBACK = 12;
private static final String SESSION_EVENT_RX_PAUSE_STR = "RX_PAUSE";
private static final String SESSION_EVENT_RX_RESUME_STR = "RX_RESUME";
private static final String SESSION_EVENT_TX_START_STR = "TX_START";
private static final String SESSION_EVENT_TX_STOP_STR = "TX_STOP";
private static final String SESSION_EVENT_CAMERA_FAILURE_STR = "CAMERA_FAIL";
private static final String SESSION_EVENT_CAMERA_READY_STR = "CAMERA_READY";
private static final String SESSION_EVENT_CAMERA_PERMISSION_ERROR_STR =
"CAMERA_PERMISSION_ERROR";
private static final String SESSION_EVENT_UNKNOWN_STR = "UNKNOWN";
private VideoProvider.VideoProviderHandler mMessageHandler;
private final VideoProvider.VideoProviderBinder mBinder;
/**
* Stores a list of the video callbacks, keyed by IBinder.
*
* ConcurrentHashMap constructor params: 8 is initial table size, 0.9f is
* load factor before resizing, 1 means we only expect a single thread to
* access the map so make only a single shard
*/
private ConcurrentHashMap<IBinder, IVideoCallback> mVideoCallbacks =
new ConcurrentHashMap<IBinder, IVideoCallback>(8, 0.9f, 1);
/**
* Default handler used to consolidate binder method calls onto a single thread.
*/
private final class VideoProviderHandler extends Handler {
public VideoProviderHandler() {
super();
}
public VideoProviderHandler(Looper looper) {
super(looper);
}
@Override
public void handleMessage(Message msg) {
switch (msg.what) {
case MSG_ADD_VIDEO_CALLBACK: {
IBinder binder = (IBinder) msg.obj;
IVideoCallback callback = IVideoCallback.Stub
.asInterface((IBinder) msg.obj);
if (callback == null) {
Log.w(this, "addVideoProvider - skipped; callback is null.");
break;
}
if (mVideoCallbacks.containsKey(binder)) {
Log.i(this, "addVideoProvider - skipped; already present.");
break;
}
mVideoCallbacks.put(binder, callback);
break;
}
case MSG_REMOVE_VIDEO_CALLBACK: {
IBinder binder = (IBinder) msg.obj;
IVideoCallback callback = IVideoCallback.Stub
.asInterface((IBinder) msg.obj);
if (!mVideoCallbacks.containsKey(binder)) {
Log.i(this, "removeVideoProvider - skipped; not present.");
break;
}
mVideoCallbacks.remove(binder);
break;
}
case MSG_SET_CAMERA:
{
SomeArgs args = (SomeArgs) msg.obj;
try {
onSetCamera((String) args.arg1);
onSetCamera((String) args.arg1, (String) args.arg2, args.argi1,
args.argi2, args.argi3);
} finally {
args.recycle();
}
}
break;
case MSG_SET_PREVIEW_SURFACE:
onSetPreviewSurface((Surface) msg.obj);
break;
case MSG_SET_DISPLAY_SURFACE:
onSetDisplaySurface((Surface) msg.obj);
break;
case MSG_SET_DEVICE_ORIENTATION:
onSetDeviceOrientation(msg.arg1);
break;
case MSG_SET_ZOOM:
onSetZoom((Float) msg.obj);
break;
case MSG_SEND_SESSION_MODIFY_REQUEST: {
SomeArgs args = (SomeArgs) msg.obj;
try {
onSendSessionModifyRequest((VideoProfile) args.arg1,
(VideoProfile) args.arg2);
} finally {
args.recycle();
}
break;
}
case MSG_SEND_SESSION_MODIFY_RESPONSE:
onSendSessionModifyResponse((VideoProfile) msg.obj);
break;
case MSG_REQUEST_CAMERA_CAPABILITIES:
onRequestCameraCapabilities();
break;
case MSG_REQUEST_CONNECTION_DATA_USAGE:
onRequestConnectionDataUsage();
break;
case MSG_SET_PAUSE_IMAGE:
onSetPauseImage((Uri) msg.obj);
break;
default:
break;
}
}
}
/**
* IVideoProvider stub implementation.
*/
private final class VideoProviderBinder extends IVideoProvider.Stub {
public void addVideoCallback(IBinder videoCallbackBinder) {
mMessageHandler.obtainMessage(
MSG_ADD_VIDEO_CALLBACK, videoCallbackBinder).sendToTarget();
}
public void removeVideoCallback(IBinder videoCallbackBinder) {
mMessageHandler.obtainMessage(
MSG_REMOVE_VIDEO_CALLBACK, videoCallbackBinder).sendToTarget();
}
public void setCamera(String cameraId, String callingPackageName,
int targetSdkVersion) {
SomeArgs args = SomeArgs.obtain();
args.arg1 = cameraId;
// Propagate the calling package; originally determined in
// android.telecom.InCallService.VideoCall#setCamera(String) from the calling
// process.
args.arg2 = callingPackageName;
// Pass along the uid and pid of the calling app; this gets lost when we put the
// message onto the handler. These are required for Telecom to perform a permission
// check to see if the calling app is able to use the camera.
args.argi1 = Binder.getCallingUid();
args.argi2 = Binder.getCallingPid();
// Pass along the target SDK version of the calling InCallService. This is used to
// maintain backwards compatibility of the API for older callers.
args.argi3 = targetSdkVersion;
mMessageHandler.obtainMessage(MSG_SET_CAMERA, args).sendToTarget();
}
public void setPreviewSurface(Surface surface) {
mMessageHandler.obtainMessage(MSG_SET_PREVIEW_SURFACE, surface).sendToTarget();
}
public void setDisplaySurface(Surface surface) {
mMessageHandler.obtainMessage(MSG_SET_DISPLAY_SURFACE, surface).sendToTarget();
}
public void setDeviceOrientation(int rotation) {
mMessageHandler.obtainMessage(
MSG_SET_DEVICE_ORIENTATION, rotation, 0).sendToTarget();
}
public void setZoom(float value) {
mMessageHandler.obtainMessage(MSG_SET_ZOOM, value).sendToTarget();
}
public void sendSessionModifyRequest(VideoProfile fromProfile, VideoProfile toProfile) {
SomeArgs args = SomeArgs.obtain();
args.arg1 = fromProfile;
args.arg2 = toProfile;
mMessageHandler.obtainMessage(MSG_SEND_SESSION_MODIFY_REQUEST, args).sendToTarget();
}
public void sendSessionModifyResponse(VideoProfile responseProfile) {
mMessageHandler.obtainMessage(
MSG_SEND_SESSION_MODIFY_RESPONSE, responseProfile).sendToTarget();
}
public void requestCameraCapabilities() {
mMessageHandler.obtainMessage(MSG_REQUEST_CAMERA_CAPABILITIES).sendToTarget();
}
public void requestCallDataUsage() {
mMessageHandler.obtainMessage(MSG_REQUEST_CONNECTION_DATA_USAGE).sendToTarget();
}
public void setPauseImage(Uri uri) {
mMessageHandler.obtainMessage(MSG_SET_PAUSE_IMAGE, uri).sendToTarget();
}
}
public VideoProvider() {
mBinder = new VideoProvider.VideoProviderBinder();
mMessageHandler = new VideoProvider.VideoProviderHandler(Looper.getMainLooper());
}
/**
* Creates an instance of the {@link VideoProvider}, specifying the looper to use.
*
* @param looper The looper.
* @hide
*/
public VideoProvider(Looper looper) {
mBinder = new VideoProvider.VideoProviderBinder();
mMessageHandler = new VideoProvider.VideoProviderHandler(looper);
}
/**
* Returns binder object which can be used across IPC methods.
* @hide
*/
public final IVideoProvider getInterface() {
return mBinder;
}
/**
* Sets the camera to be used for the outgoing video.
* <p>
* The {@link VideoProvider} should respond by communicating the capabilities of the chosen
* camera via
* {@link VideoProvider#changeCameraCapabilities(VideoProfile.CameraCapabilities)}.
* <p>
* Sent from the {@link InCallService} via
* {@link InCallService.VideoCall#setCamera(String)}.
*
* @param cameraId The id of the camera (use ids as reported by
* {@link CameraManager#getCameraIdList()}).
*/
public abstract void onSetCamera(String cameraId);
/**
* Sets the camera to be used for the outgoing video.
* <p>
* The {@link VideoProvider} should respond by communicating the capabilities of the chosen
* camera via
* {@link VideoProvider#changeCameraCapabilities(VideoProfile.CameraCapabilities)}.
* <p>
* This prototype is used internally to ensure that the calling package name, UID and PID
* are sent to Telecom so that can perform a camera permission check on the caller.
* <p>
* Sent from the {@link InCallService} via
* {@link InCallService.VideoCall#setCamera(String)}.
*
* @param cameraId The id of the camera (use ids as reported by
* {@link CameraManager#getCameraIdList()}).
* @param callingPackageName The AppOpps package name of the caller.
* @param callingUid The UID of the caller.
* @param callingPid The PID of the caller.
* @param targetSdkVersion The target SDK version of the caller.
* @hide
*/
public void onSetCamera(String cameraId, String callingPackageName, int callingUid,
int callingPid, int targetSdkVersion) {}
/**
* Sets the surface to be used for displaying a preview of what the user's camera is
* currently capturing. When video transmission is enabled, this is the video signal which
* is sent to the remote device.
* <p>
* Sent from the {@link InCallService} via
* {@link InCallService.VideoCall#setPreviewSurface(Surface)}.
*
* @param surface The {@link Surface}.
*/
public abstract void onSetPreviewSurface(Surface surface);
/**
* Sets the surface to be used for displaying the video received from the remote device.
* <p>
* Sent from the {@link InCallService} via
* {@link InCallService.VideoCall#setDisplaySurface(Surface)}.
*
* @param surface The {@link Surface}.
*/
public abstract void onSetDisplaySurface(Surface surface);
/**
* Sets the device orientation, in degrees. Assumes that a standard portrait orientation of
* the device is 0 degrees.
* <p>
* Sent from the {@link InCallService} via
* {@link InCallService.VideoCall#setDeviceOrientation(int)}.
*
* @param rotation The device orientation, in degrees.
*/
public abstract void onSetDeviceOrientation(int rotation);
/**
* Sets camera zoom ratio.
* <p>
* Sent from the {@link InCallService} via {@link InCallService.VideoCall#setZoom(float)}.
*
* @param value The camera zoom ratio.
*/
public abstract void onSetZoom(float value);
/**
* Issues a request to modify the properties of the current video session.
* <p>
* Example scenarios include: requesting an audio-only call to be upgraded to a
* bi-directional video call, turning on or off the user's camera, sending a pause signal
* when the {@link InCallService} is no longer the foreground application.
* <p>
* If the {@link VideoProvider} determines a request to be invalid, it should call
* {@link #receiveSessionModifyResponse(int, VideoProfile, VideoProfile)} to report the
* invalid request back to the {@link InCallService}.
* <p>
* Where a request requires confirmation from the user of the peer device, the
* {@link VideoProvider} must communicate the request to the peer device and handle the
* user's response. {@link #receiveSessionModifyResponse(int, VideoProfile, VideoProfile)}
* is used to inform the {@link InCallService} of the result of the request.
* <p>
* Sent from the {@link InCallService} via
* {@link InCallService.VideoCall#sendSessionModifyRequest(VideoProfile)}.
*
* @param fromProfile The video profile prior to the request.
* @param toProfile The video profile with the requested changes made.
*/
public abstract void onSendSessionModifyRequest(VideoProfile fromProfile,
VideoProfile toProfile);
/**
* Provides a response to a request to change the current video session properties.
* <p>
* For example, if the peer requests and upgrade from an audio-only call to a bi-directional
* video call, could decline the request and keep the call as audio-only.
* In such a scenario, the {@code responseProfile} would have a video state of
* {@link VideoProfile#STATE_AUDIO_ONLY}. If the user had decided to accept the request,
* the video state would be {@link VideoProfile#STATE_BIDIRECTIONAL}.
* <p>
* Sent from the {@link InCallService} via
* {@link InCallService.VideoCall#sendSessionModifyResponse(VideoProfile)} in response to
* a {@link InCallService.VideoCall.Callback#onSessionModifyRequestReceived(VideoProfile)}
* callback.
*
* @param responseProfile The response video profile.
*/
public abstract void onSendSessionModifyResponse(VideoProfile responseProfile);
/**
* Issues a request to the {@link VideoProvider} to retrieve the camera capabilities.
* <p>
* The {@link VideoProvider} should respond by communicating the capabilities of the chosen
* camera via
* {@link VideoProvider#changeCameraCapabilities(VideoProfile.CameraCapabilities)}.
* <p>
* Sent from the {@link InCallService} via
* {@link InCallService.VideoCall#requestCameraCapabilities()}.
*/
public abstract void onRequestCameraCapabilities();
/**
* Issues a request to the {@link VideoProvider} to retrieve the current data usage for the
* video component of the current {@link Connection}.
* <p>
* The {@link VideoProvider} should respond by communicating current data usage, in bytes,
* via {@link VideoProvider#setCallDataUsage(long)}.
* <p>
* Sent from the {@link InCallService} via
* {@link InCallService.VideoCall#requestCallDataUsage()}.
*/
public abstract void onRequestConnectionDataUsage();
/**
* Provides the {@link VideoProvider} with the {@link Uri} of an image to be displayed to
* the peer device when the video signal is paused.
* <p>
* Sent from the {@link InCallService} via
* {@link InCallService.VideoCall#setPauseImage(Uri)}.
*
* @param uri URI of image to display.
*/
public abstract void onSetPauseImage(Uri uri);
/**
* Used to inform listening {@link InCallService} implementations when the
* {@link VideoProvider} receives a session modification request.
* <p>
* Received by the {@link InCallService} via
* {@link InCallService.VideoCall.Callback#onSessionModifyRequestReceived(VideoProfile)},
*
* @param videoProfile The requested video profile.
* @see #onSendSessionModifyRequest(VideoProfile, VideoProfile)
*/
public void receiveSessionModifyRequest(VideoProfile videoProfile) {
if (mVideoCallbacks != null) {
for (IVideoCallback callback : mVideoCallbacks.values()) {
try {
callback.receiveSessionModifyRequest(videoProfile);
} catch (RemoteException ignored) {
Log.w(this, "receiveSessionModifyRequest callback failed", ignored);
}
}
}
}
/**
* Used to inform listening {@link InCallService} implementations when the
* {@link VideoProvider} receives a response to a session modification request.
* <p>
* Received by the {@link InCallService} via
* {@link InCallService.VideoCall.Callback#onSessionModifyResponseReceived(int,
* VideoProfile, VideoProfile)}.
*
* @param status Status of the session modify request. Valid values are
* {@link VideoProvider#SESSION_MODIFY_REQUEST_SUCCESS},
* {@link VideoProvider#SESSION_MODIFY_REQUEST_FAIL},
* {@link VideoProvider#SESSION_MODIFY_REQUEST_INVALID},
* {@link VideoProvider#SESSION_MODIFY_REQUEST_TIMED_OUT},
* {@link VideoProvider#SESSION_MODIFY_REQUEST_REJECTED_BY_REMOTE}
* @param requestedProfile The original request which was sent to the peer device.
* @param responseProfile The actual profile changes agreed to by the peer device.
* @see #onSendSessionModifyRequest(VideoProfile, VideoProfile)
*/
public void receiveSessionModifyResponse(int status,
VideoProfile requestedProfile, VideoProfile responseProfile) {
if (mVideoCallbacks != null) {
for (IVideoCallback callback : mVideoCallbacks.values()) {
try {
callback.receiveSessionModifyResponse(status, requestedProfile,
responseProfile);
} catch (RemoteException ignored) {
Log.w(this, "receiveSessionModifyResponse callback failed", ignored);
}
}
}
}
/**
* Used to inform listening {@link InCallService} implementations when the
* {@link VideoProvider} reports a call session event.
* <p>
* Received by the {@link InCallService} via
* {@link InCallService.VideoCall.Callback#onCallSessionEvent(int)}.
*
* @param event The event. Valid values are: {@link VideoProvider#SESSION_EVENT_RX_PAUSE},
* {@link VideoProvider#SESSION_EVENT_RX_RESUME},
* {@link VideoProvider#SESSION_EVENT_TX_START},
* {@link VideoProvider#SESSION_EVENT_TX_STOP},
* {@link VideoProvider#SESSION_EVENT_CAMERA_FAILURE},
* {@link VideoProvider#SESSION_EVENT_CAMERA_READY},
* {@link VideoProvider#SESSION_EVENT_CAMERA_FAILURE}.
*/
public void handleCallSessionEvent(int event) {
if (mVideoCallbacks != null) {
for (IVideoCallback callback : mVideoCallbacks.values()) {
try {
callback.handleCallSessionEvent(event);
} catch (RemoteException ignored) {
Log.w(this, "handleCallSessionEvent callback failed", ignored);
}
}
}
}
/**
* Used to inform listening {@link InCallService} implementations when the dimensions of the
* peer's video have changed.
* <p>
* This could occur if, for example, the peer rotates their device, changing the aspect
* ratio of the video, or if the user switches between the back and front cameras.
* <p>
* Received by the {@link InCallService} via
* {@link InCallService.VideoCall.Callback#onPeerDimensionsChanged(int, int)}.
*
* @param width The updated peer video width.
* @param height The updated peer video height.
*/
public void changePeerDimensions(int width, int height) {
if (mVideoCallbacks != null) {
for (IVideoCallback callback : mVideoCallbacks.values()) {
try {
callback.changePeerDimensions(width, height);
} catch (RemoteException ignored) {
Log.w(this, "changePeerDimensions callback failed", ignored);
}
}
}
}
/**
* Used to inform listening {@link InCallService} implementations when the data usage of the
* video associated with the current {@link Connection} has changed.
* <p>
* This could be in response to a preview request via
* {@link #onRequestConnectionDataUsage()}, or as a periodic update by the
* {@link VideoProvider}. Where periodic updates of data usage are provided, they should be
* provided at most for every 1 MB of data transferred and no more than once every 10 sec.
* <p>
* Received by the {@link InCallService} via
* {@link InCallService.VideoCall.Callback#onCallDataUsageChanged(long)}.
*
* @param dataUsage The updated data usage (in bytes). Reported as the cumulative bytes
* used since the start of the call.
*/
public void setCallDataUsage(long dataUsage) {
if (mVideoCallbacks != null) {
for (IVideoCallback callback : mVideoCallbacks.values()) {
try {
callback.changeCallDataUsage(dataUsage);
} catch (RemoteException ignored) {
Log.w(this, "setCallDataUsage callback failed", ignored);
}
}
}
}
/**
* @see #setCallDataUsage(long)
*
* @param dataUsage The updated data usage (in byes).
* @deprecated - Use {@link #setCallDataUsage(long)} instead.
* @hide
*/
public void changeCallDataUsage(long dataUsage) {
setCallDataUsage(dataUsage);
}
/**
* Used to inform listening {@link InCallService} implementations when the capabilities of
* the current camera have changed.
* <p>
* The {@link VideoProvider} should call this in response to
* {@link VideoProvider#onRequestCameraCapabilities()}, or when the current camera is
* changed via {@link VideoProvider#onSetCamera(String)}.
* <p>
* Received by the {@link InCallService} via
* {@link InCallService.VideoCall.Callback#onCameraCapabilitiesChanged(
* VideoProfile.CameraCapabilities)}.
*
* @param cameraCapabilities The new camera capabilities.
*/
public void changeCameraCapabilities(VideoProfile.CameraCapabilities cameraCapabilities) {
if (mVideoCallbacks != null) {
for (IVideoCallback callback : mVideoCallbacks.values()) {
try {
callback.changeCameraCapabilities(cameraCapabilities);
} catch (RemoteException ignored) {
Log.w(this, "changeCameraCapabilities callback failed", ignored);
}
}
}
}
/**
* Used to inform listening {@link InCallService} implementations when the video quality
* of the call has changed.
* <p>
* Received by the {@link InCallService} via
* {@link InCallService.VideoCall.Callback#onVideoQualityChanged(int)}.
*
* @param videoQuality The updated video quality. Valid values:
* {@link VideoProfile#QUALITY_HIGH},
* {@link VideoProfile#QUALITY_MEDIUM},
* {@link VideoProfile#QUALITY_LOW},
* {@link VideoProfile#QUALITY_DEFAULT}.
*/
public void changeVideoQuality(int videoQuality) {
if (mVideoCallbacks != null) {
for (IVideoCallback callback : mVideoCallbacks.values()) {
try {
callback.changeVideoQuality(videoQuality);
} catch (RemoteException ignored) {
Log.w(this, "changeVideoQuality callback failed", ignored);
}
}
}
}
/**
* Returns a string representation of a call session event.
*
* @param event A call session event passed to {@link #handleCallSessionEvent(int)}.
* @return String representation of the call session event.
* @hide
*/
public static String sessionEventToString(int event) {
switch (event) {
case SESSION_EVENT_CAMERA_FAILURE:
return SESSION_EVENT_CAMERA_FAILURE_STR;
case SESSION_EVENT_CAMERA_READY:
return SESSION_EVENT_CAMERA_READY_STR;
case SESSION_EVENT_RX_PAUSE:
return SESSION_EVENT_RX_PAUSE_STR;
case SESSION_EVENT_RX_RESUME:
return SESSION_EVENT_RX_RESUME_STR;
case SESSION_EVENT_TX_START:
return SESSION_EVENT_TX_START_STR;
case SESSION_EVENT_TX_STOP:
return SESSION_EVENT_TX_STOP_STR;
case SESSION_EVENT_CAMERA_PERMISSION_ERROR:
return SESSION_EVENT_CAMERA_PERMISSION_ERROR_STR;
default:
return SESSION_EVENT_UNKNOWN_STR + " " + event;
}
}
}
private final Listener mConnectionDeathListener = new Listener() {
@Override
public void onDestroyed(Connection c) {
if (mConferenceables.remove(c)) {
fireOnConferenceableConnectionsChanged();
}
}
};
private final Conference.Listener mConferenceDeathListener = new Conference.Listener() {
@Override
public void onDestroyed(Conference c) {
if (mConferenceables.remove(c)) {
fireOnConferenceableConnectionsChanged();
}
}
};
/**
* ConcurrentHashMap constructor params: 8 is initial table size, 0.9f is
* load factor before resizing, 1 means we only expect a single thread to
* access the map so make only a single shard
*/
private final Set<Listener> mListeners = Collections.newSetFromMap(
new ConcurrentHashMap<Listener, Boolean>(8, 0.9f, 1));
private final List<Conferenceable> mConferenceables = new ArrayList<>();
private final List<Conferenceable> mUnmodifiableConferenceables =
Collections.unmodifiableList(mConferenceables);
// The internal telecom call ID associated with this connection.
private String mTelecomCallId;
private int mState = STATE_NEW;
private CallAudioState mCallAudioState;
private Uri mAddress;
private int mAddressPresentation;
private String mCallerDisplayName;
private int mCallerDisplayNamePresentation;
private boolean mRingbackRequested = false;
private int mConnectionCapabilities;
private int mConnectionProperties;
private int mSupportedAudioRoutes = CallAudioState.ROUTE_ALL;
private VideoProvider mVideoProvider;
private boolean mAudioModeIsVoip;
private long mConnectTimeMillis = Conference.CONNECT_TIME_NOT_SPECIFIED;
private StatusHints mStatusHints;
private int mVideoState;
private DisconnectCause mDisconnectCause;
private Conference mConference;
private ConnectionService mConnectionService;
private Bundle mExtras;
private final Object mExtrasLock = new Object();
/**
* Tracks the key set for the extras bundle provided on the last invocation of
* {@link #setExtras(Bundle)}. Used so that on subsequent invocations we can remove any extras
* keys which were set previously but are no longer present in the replacement Bundle.
*/
private Set<String> mPreviousExtraKeys;
/**
* Create a new Connection.
*/
public Connection() {}
/**
* Returns the Telecom internal call ID associated with this connection. Should only be used
* for debugging and tracing purposes.
*
* @return The Telecom call ID.
* @hide
*/
public final String getTelecomCallId() {
return mTelecomCallId;
}
/**
* @return The address (e.g., phone number) to which this Connection is currently communicating.
*/
public final Uri getAddress() {
return mAddress;
}
/**
* @return The presentation requirements for the address.
* See {@link TelecomManager} for valid values.
*/
public final int getAddressPresentation() {
return mAddressPresentation;
}
/**
* @return The caller display name (CNAP).
*/
public final String getCallerDisplayName() {
return mCallerDisplayName;
}
/**
* @return The presentation requirements for the handle.
* See {@link TelecomManager} for valid values.
*/
public final int getCallerDisplayNamePresentation() {
return mCallerDisplayNamePresentation;
}
/**
* @return The state of this Connection.
*/
public final int getState() {
return mState;
}
/**
* Returns the video state of the connection.
* Valid values: {@link VideoProfile#STATE_AUDIO_ONLY},
* {@link VideoProfile#STATE_BIDIRECTIONAL},
* {@link VideoProfile#STATE_TX_ENABLED},
* {@link VideoProfile#STATE_RX_ENABLED}.
*
* @return The video state of the connection.
* @hide
*/
public final int getVideoState() {
return mVideoState;
}
/**
* @return The audio state of the connection, describing how its audio is currently
* being routed by the system. This is {@code null} if this Connection
* does not directly know about its audio state.
* @deprecated Use {@link #getCallAudioState()} instead.
* @hide
*/
@SystemApi
@Deprecated
public final AudioState getAudioState() {
if (mCallAudioState == null) {
return null;
}
return new AudioState(mCallAudioState);
}
/**
* @return The audio state of the connection, describing how its audio is currently
* being routed by the system. This is {@code null} if this Connection
* does not directly know about its audio state.
*/
public final CallAudioState getCallAudioState() {
return mCallAudioState;
}
/**
* @return The conference that this connection is a part of. Null if it is not part of any
* conference.
*/
public final Conference getConference() {
return mConference;
}
/**
* Returns whether this connection is requesting that the system play a ringback tone
* on its behalf.
*/
public final boolean isRingbackRequested() {
return mRingbackRequested;
}
/**
* @return True if the connection's audio mode is VOIP.
*/
public final boolean getAudioModeIsVoip() {
return mAudioModeIsVoip;
}
/**
* Retrieves the connection start time of the {@code Connnection}, if specified. A value of
* {@link Conference#CONNECT_TIME_NOT_SPECIFIED} indicates that Telecom should determine the
* start time of the conference.
*
* @return The time at which the {@code Connnection} was connected.
*
* @hide
*/
public final long getConnectTimeMillis() {
return mConnectTimeMillis;
}
/**
* @return The status hints for this connection.
*/
public final StatusHints getStatusHints() {
return mStatusHints;
}
/**
* Returns the extras associated with this connection.
* <p>
* Extras should be updated using {@link #putExtras(Bundle)}.
* <p>
* Telecom or an {@link InCallService} can also update the extras via
* {@link android.telecom.Call#putExtras(Bundle)}, and
* {@link Call#removeExtras(List)}.
* <p>
* The connection is notified of changes to the extras made by Telecom or an
* {@link InCallService} by {@link #onExtrasChanged(Bundle)}.
*
* @return The extras associated with this connection.
*/
public final Bundle getExtras() {
Bundle extras = null;
synchronized (mExtrasLock) {
if (mExtras != null) {
extras = new Bundle(mExtras);
}
}
return extras;
}
/**
* Assign a listener to be notified of state changes.
*
* @param l A listener.
* @return This Connection.
*
* @hide
*/
public final Connection addConnectionListener(Listener l) {
mListeners.add(l);
return this;
}
/**
* Remove a previously assigned listener that was being notified of state changes.
*
* @param l A Listener.
* @return This Connection.
*
* @hide
*/
public final Connection removeConnectionListener(Listener l) {
if (l != null) {
mListeners.remove(l);
}
return this;
}
/**
* @return The {@link DisconnectCause} for this connection.
*/
public final DisconnectCause getDisconnectCause() {
return mDisconnectCause;
}
/**
* Sets the telecom call ID associated with this Connection. The Telecom Call ID should be used
* ONLY for debugging purposes.
*
* @param callId The telecom call ID.
* @hide
*/
public void setTelecomCallId(String callId) {
mTelecomCallId = callId;
}
/**
* Inform this Connection that the state of its audio output has been changed externally.
*
* @param state The new audio state.
* @hide
*/
final void setCallAudioState(CallAudioState state) {
checkImmutable();
Log.d(this, "setAudioState %s", state);
mCallAudioState = state;
onAudioStateChanged(getAudioState());
onCallAudioStateChanged(state);
}
/**
* @param state An integer value of a {@code STATE_*} constant.
* @return A string representation of the value.
*/
public static String stateToString(int state) {
switch (state) {
case STATE_INITIALIZING:
return "INITIALIZING";
case STATE_NEW:
return "NEW";
case STATE_RINGING:
return "RINGING";
case STATE_DIALING:
return "DIALING";
case STATE_PULLING_CALL:
return "PULLING_CALL";
case STATE_ACTIVE:
return "ACTIVE";
case STATE_HOLDING:
return "HOLDING";
case STATE_DISCONNECTED:
return "DISCONNECTED";
default:
Log.wtf(Connection.class, "Unknown state %d", state);
return "UNKNOWN";
}
}
/**
* Returns the connection's capabilities, as a bit mask of the {@code CAPABILITY_*} constants.
*/
public final int getConnectionCapabilities() {
return mConnectionCapabilities;
}
/**
* Returns the connection's properties, as a bit mask of the {@code PROPERTY_*} constants.
*/
public final int getConnectionProperties() {
return mConnectionProperties;
}
/**
* Returns the connection's supported audio routes.
*
* @hide
*/
public final int getSupportedAudioRoutes() {
return mSupportedAudioRoutes;
}
/**
* Sets the value of the {@link #getAddress()} property.
*
* @param address The new address.
* @param presentation The presentation requirements for the address.
* See {@link TelecomManager} for valid values.
*/
public final void setAddress(Uri address, int presentation) {
checkImmutable();
Log.d(this, "setAddress %s", address);
mAddress = address;
mAddressPresentation = presentation;
for (Listener l : mListeners) {
l.onAddressChanged(this, address, presentation);
}
}
/**
* Sets the caller display name (CNAP).
*
* @param callerDisplayName The new display name.
* @param presentation The presentation requirements for the handle.
* See {@link TelecomManager} for valid values.
*/
public final void setCallerDisplayName(String callerDisplayName, int presentation) {
checkImmutable();
Log.d(this, "setCallerDisplayName %s", callerDisplayName);
mCallerDisplayName = callerDisplayName;
mCallerDisplayNamePresentation = presentation;
for (Listener l : mListeners) {
l.onCallerDisplayNameChanged(this, callerDisplayName, presentation);
}
}
/**
* Set the video state for the connection.
* Valid values: {@link VideoProfile#STATE_AUDIO_ONLY},
* {@link VideoProfile#STATE_BIDIRECTIONAL},
* {@link VideoProfile#STATE_TX_ENABLED},
* {@link VideoProfile#STATE_RX_ENABLED}.
*
* @param videoState The new video state.
*/
public final void setVideoState(int videoState) {
checkImmutable();
Log.d(this, "setVideoState %d", videoState);
mVideoState = videoState;
for (Listener l : mListeners) {
l.onVideoStateChanged(this, mVideoState);
}
}
/**
* Sets state to active (e.g., an ongoing connection where two or more parties can actively
* communicate).
*/
public final void setActive() {
checkImmutable();
setRingbackRequested(false);
setState(STATE_ACTIVE);
}
/**
* Sets state to ringing (e.g., an inbound ringing connection).
*/
public final void setRinging() {
checkImmutable();
setState(STATE_RINGING);
}
/**
* Sets state to initializing (this Connection is not yet ready to be used).
*/
public final void setInitializing() {
checkImmutable();
setState(STATE_INITIALIZING);
}
/**
* Sets state to initialized (the Connection has been set up and is now ready to be used).
*/
public final void setInitialized() {
checkImmutable();
setState(STATE_NEW);
}
/**
* Sets state to dialing (e.g., dialing an outbound connection).
*/
public final void setDialing() {
checkImmutable();
setState(STATE_DIALING);
}
/**
* Sets state to pulling (e.g. the connection is being pulled to the local device from another
* device). Only applicable for {@link Connection}s with
* {@link Connection#PROPERTY_IS_EXTERNAL_CALL} and {@link Connection#CAPABILITY_CAN_PULL_CALL}.
*/
public final void setPulling() {
checkImmutable();
setState(STATE_PULLING_CALL);
}
/**
* Sets state to be on hold.
*/
public final void setOnHold() {
checkImmutable();
setState(STATE_HOLDING);
}
/**
* Sets the video connection provider.
* @param videoProvider The video provider.
*/
public final void setVideoProvider(VideoProvider videoProvider) {
checkImmutable();
mVideoProvider = videoProvider;
for (Listener l : mListeners) {
l.onVideoProviderChanged(this, videoProvider);
}
}
public final VideoProvider getVideoProvider() {
return mVideoProvider;
}
/**
* Sets state to disconnected.
*
* @param disconnectCause The reason for the disconnection, as specified by
* {@link DisconnectCause}.
*/
public final void setDisconnected(DisconnectCause disconnectCause) {
checkImmutable();
mDisconnectCause = disconnectCause;
setState(STATE_DISCONNECTED);
Log.d(this, "Disconnected with cause %s", disconnectCause);
for (Listener l : mListeners) {
l.onDisconnected(this, disconnectCause);
}
}
/**
* Informs listeners that this {@code Connection} is in a post-dial wait state. This is done
* when (a) the {@code Connection} is issuing a DTMF sequence; (b) it has encountered a "wait"
* character; and (c) it wishes to inform the In-Call app that it is waiting for the end-user
* to send an {@link #onPostDialContinue(boolean)} signal.
*
* @param remaining The DTMF character sequence remaining to be emitted once the
* {@link #onPostDialContinue(boolean)} is received, including any "wait" characters
* that remaining sequence may contain.
*/
public final void setPostDialWait(String remaining) {
checkImmutable();
for (Listener l : mListeners) {
l.onPostDialWait(this, remaining);
}
}
/**
* Informs listeners that this {@code Connection} has processed a character in the post-dial
* started state. This is done when (a) the {@code Connection} is issuing a DTMF sequence;
* and (b) it wishes to signal Telecom to play the corresponding DTMF tone locally.
*
* @param nextChar The DTMF character that was just processed by the {@code Connection}.
*/
public final void setNextPostDialChar(char nextChar) {
checkImmutable();
for (Listener l : mListeners) {
l.onPostDialChar(this, nextChar);
}
}
/**
* Requests that the framework play a ringback tone. This is to be invoked by implementations
* that do not play a ringback tone themselves in the connection's audio stream.
*
* @param ringback Whether the ringback tone is to be played.
*/
public final void setRingbackRequested(boolean ringback) {
checkImmutable();
if (mRingbackRequested != ringback) {
mRingbackRequested = ringback;
for (Listener l : mListeners) {
l.onRingbackRequested(this, ringback);
}
}
}
/**
* Sets the connection's capabilities as a bit mask of the {@code CAPABILITY_*} constants.
*
* @param connectionCapabilities The new connection capabilities.
*/
public final void setConnectionCapabilities(int connectionCapabilities) {
checkImmutable();
if (mConnectionCapabilities != connectionCapabilities) {
mConnectionCapabilities = connectionCapabilities;
for (Listener l : mListeners) {
l.onConnectionCapabilitiesChanged(this, mConnectionCapabilities);
}
}
}
/**
* Sets the connection's properties as a bit mask of the {@code PROPERTY_*} constants.
*
* @param connectionProperties The new connection properties.
*/
public final void setConnectionProperties(int connectionProperties) {
checkImmutable();
if (mConnectionProperties != connectionProperties) {
mConnectionProperties = connectionProperties;
for (Listener l : mListeners) {
l.onConnectionPropertiesChanged(this, mConnectionProperties);
}
}
}
/**
* Sets the supported audio routes.
*
* @param supportedAudioRoutes the supported audio routes as a bitmask.
* See {@link CallAudioState}
* @hide
*/
public final void setSupportedAudioRoutes(int supportedAudioRoutes) {
if ((supportedAudioRoutes
& (CallAudioState.ROUTE_EARPIECE | CallAudioState.ROUTE_SPEAKER)) == 0) {
throw new IllegalArgumentException(
"supported audio routes must include either speaker or earpiece");
}
if (mSupportedAudioRoutes != supportedAudioRoutes) {
mSupportedAudioRoutes = supportedAudioRoutes;
for (Listener l : mListeners) {
l.onSupportedAudioRoutesChanged(this, mSupportedAudioRoutes);
}
}
}
/**
* Tears down the Connection object.
*/
public final void destroy() {
for (Listener l : mListeners) {
l.onDestroyed(this);
}
}
/**
* Requests that the framework use VOIP audio mode for this connection.
*
* @param isVoip True if the audio mode is VOIP.
*/
public final void setAudioModeIsVoip(boolean isVoip) {
checkImmutable();
mAudioModeIsVoip = isVoip;
for (Listener l : mListeners) {
l.onAudioModeIsVoipChanged(this, isVoip);
}
}
/**
* Sets the time at which a call became active on this Connection. This is set only
* when a conference call becomes active on this connection.
*
* @param connectionTimeMillis The connection time, in milliseconds.
*
* @hide
*/
public final void setConnectTimeMillis(long connectTimeMillis) {
mConnectTimeMillis = connectTimeMillis;
}
/**
* Sets the label and icon status to display in the in-call UI.
*
* @param statusHints The status label and icon to set.
*/
public final void setStatusHints(StatusHints statusHints) {
checkImmutable();
mStatusHints = statusHints;
for (Listener l : mListeners) {
l.onStatusHintsChanged(this, statusHints);
}
}
/**
* Sets the connections with which this connection can be conferenced.
*
* @param conferenceableConnections The set of connections this connection can conference with.
*/
public final void setConferenceableConnections(List<Connection> conferenceableConnections) {
checkImmutable();
clearConferenceableList();
for (Connection c : conferenceableConnections) {
// If statement checks for duplicates in input. It makes it N^2 but we're dealing with a
// small amount of items here.
if (!mConferenceables.contains(c)) {
c.addConnectionListener(mConnectionDeathListener);
mConferenceables.add(c);
}
}
fireOnConferenceableConnectionsChanged();
}
/**
* Similar to {@link #setConferenceableConnections(java.util.List)}, sets a list of connections
* or conferences with which this connection can be conferenced.
*
* @param conferenceables The conferenceables.
*/
public final void setConferenceables(List<Conferenceable> conferenceables) {
clearConferenceableList();
for (Conferenceable c : conferenceables) {
// If statement checks for duplicates in input. It makes it N^2 but we're dealing with a
// small amount of items here.
if (!mConferenceables.contains(c)) {
if (c instanceof Connection) {
Connection connection = (Connection) c;
connection.addConnectionListener(mConnectionDeathListener);
} else if (c instanceof Conference) {
Conference conference = (Conference) c;
conference.addListener(mConferenceDeathListener);
}
mConferenceables.add(c);
}
}
fireOnConferenceableConnectionsChanged();
}
/**
* Returns the connections or conferences with which this connection can be conferenced.
*/
public final List<Conferenceable> getConferenceables() {
return mUnmodifiableConferenceables;
}
/**
* @hide
*/
public final void setConnectionService(ConnectionService connectionService) {
checkImmutable();
if (mConnectionService != null) {
Log.e(this, new Exception(), "Trying to set ConnectionService on a connection " +
"which is already associated with another ConnectionService.");
} else {
mConnectionService = connectionService;
}
}
/**
* @hide
*/
public final void unsetConnectionService(ConnectionService connectionService) {
if (mConnectionService != connectionService) {
Log.e(this, new Exception(), "Trying to remove ConnectionService from a Connection " +
"that does not belong to the ConnectionService.");
} else {
mConnectionService = null;
}
}
/**
* @hide
*/
public final ConnectionService getConnectionService() {
return mConnectionService;
}
/**
* Sets the conference that this connection is a part of. This will fail if the connection is
* already part of a conference. {@link #resetConference} to un-set the conference first.
*
* @param conference The conference.
* @return {@code true} if the conference was successfully set.
* @hide
*/
public final boolean setConference(Conference conference) {
checkImmutable();
// We check to see if it is already part of another conference.
if (mConference == null) {
mConference = conference;
if (mConnectionService != null && mConnectionService.containsConference(conference)) {
fireConferenceChanged();
}
return true;
}
return false;
}
/**
* Resets the conference that this connection is a part of.
* @hide
*/
public final void resetConference() {
if (mConference != null) {
Log.d(this, "Conference reset");
mConference = null;
fireConferenceChanged();
}
}
/**
* Set some extras that can be associated with this {@code Connection}.
* <p>
* New or existing keys are replaced in the {@code Connection} extras. Keys which are no longer
* in the new extras, but were present the last time {@code setExtras} was called are removed.
* <p>
* Alternatively you may use the {@link #putExtras(Bundle)}, and
* {@link #removeExtras(String...)} methods to modify the extras.
* <p>
* No assumptions should be made as to how an In-Call UI or service will handle these extras.
* Keys should be fully qualified (e.g., com.example.MY_EXTRA) to avoid conflicts.
*
* @param extras The extras associated with this {@code Connection}.
*/
public final void setExtras(@Nullable Bundle extras) {
checkImmutable();
// Add/replace any new or changed extras values.
putExtras(extras);
// If we have used "setExtras" in the past, compare the key set from the last invocation to
// the current one and remove any keys that went away.
if (mPreviousExtraKeys != null) {
List<String> toRemove = new ArrayList<String>();
for (String oldKey : mPreviousExtraKeys) {
if (extras == null || !extras.containsKey(oldKey)) {
toRemove.add(oldKey);
}
}
if (!toRemove.isEmpty()) {
removeExtras(toRemove);
}
}
// Track the keys the last time set called setExtras. This way, the next time setExtras is
// called we can see if the caller has removed any extras values.
if (mPreviousExtraKeys == null) {
mPreviousExtraKeys = new ArraySet<String>();
}
mPreviousExtraKeys.clear();
if (extras != null) {
mPreviousExtraKeys.addAll(extras.keySet());
}
}
/**
* Adds some extras to this {@code Connection}. Existing keys are replaced and new ones are
* added.
* <p>
* No assumptions should be made as to how an In-Call UI or service will handle these extras.
* Keys should be fully qualified (e.g., com.example.MY_EXTRA) to avoid conflicts.
*
* @param extras The extras to add.
*/
public final void putExtras(@NonNull Bundle extras) {
checkImmutable();
if (extras == null) {
return;
}
// Creating a duplicate bundle so we don't have to synchronize on mExtrasLock while calling
// the listeners.
Bundle listenerExtras;
synchronized (mExtrasLock) {
if (mExtras == null) {
mExtras = new Bundle();
}
mExtras.putAll(extras);
listenerExtras = new Bundle(mExtras);
}
for (Listener l : mListeners) {
// Create a new clone of the extras for each listener so that they don't clobber
// each other
l.onExtrasChanged(this, new Bundle(listenerExtras));
}
}
/**
* Adds a boolean extra to this {@code Connection}.
*
* @param key The extra key.
* @param value The value.
* @hide
*/
public final void putExtra(String key, boolean value) {
Bundle newExtras = new Bundle();
newExtras.putBoolean(key, value);
putExtras(newExtras);
}
/**
* Adds an integer extra to this {@code Connection}.
*
* @param key The extra key.
* @param value The value.
* @hide
*/
public final void putExtra(String key, int value) {
Bundle newExtras = new Bundle();
newExtras.putInt(key, value);
putExtras(newExtras);
}
/**
* Adds a string extra to this {@code Connection}.
*
* @param key The extra key.
* @param value The value.
* @hide
*/
public final void putExtra(String key, String value) {
Bundle newExtras = new Bundle();
newExtras.putString(key, value);
putExtras(newExtras);
}
/**
* Removes extras from this {@code Connection}.
*
* @param keys The keys of the extras to remove.
*/
public final void removeExtras(List<String> keys) {
synchronized (mExtrasLock) {
if (mExtras != null) {
for (String key : keys) {
mExtras.remove(key);
}
}
}
List<String> unmodifiableKeys = Collections.unmodifiableList(keys);
for (Listener l : mListeners) {
l.onExtrasRemoved(this, unmodifiableKeys);
}
}
/**
* Removes extras from this {@code Connection}.
*
* @param keys The keys of the extras to remove.
*/
public final void removeExtras(String ... keys) {
removeExtras(Arrays.asList(keys));
}
/**
* Sets the audio route (speaker, bluetooth, etc...). When this request is honored, there will
* be change to the {@link #getCallAudioState()}.
* <p>
* Used by self-managed {@link ConnectionService}s which wish to change the audio route for a
* self-managed {@link Connection} (see {@link PhoneAccount#CAPABILITY_SELF_MANAGED}.)
* <p>
* See also {@link InCallService#setAudioRoute(int)}.
*
* @param route The audio route to use (one of {@link CallAudioState#ROUTE_BLUETOOTH},
* {@link CallAudioState#ROUTE_EARPIECE}, {@link CallAudioState#ROUTE_SPEAKER}, or
* {@link CallAudioState#ROUTE_WIRED_HEADSET}).
*/
public final void setAudioRoute(int route) {
for (Listener l : mListeners) {
l.onAudioRouteChanged(this, route);
}
}
/**
* Informs listeners that a previously requested RTT session via
* {@link ConnectionRequest#isRequestingRtt()} or
* {@link #onStartRtt(ParcelFileDescriptor, ParcelFileDescriptor)} has succeeded.
* @hide
*/
@TestApi
public final void sendRttInitiationSuccess() {
setRttProperty();
mListeners.forEach((l) -> l.onRttInitiationSuccess(Connection.this));
}
/**
* Informs listeners that a previously requested RTT session via
* {@link ConnectionRequest#isRequestingRtt()} or
* {@link #onStartRtt(ParcelFileDescriptor, ParcelFileDescriptor)}
* has failed.
* @param reason One of the reason codes defined in {@link RttModifyStatus}, with the
* exception of {@link RttModifyStatus#SESSION_MODIFY_REQUEST_SUCCESS}.
* @hide
*/
@TestApi
public final void sendRttInitiationFailure(int reason) {
unsetRttProperty();
mListeners.forEach((l) -> l.onRttInitiationFailure(Connection.this, reason));
}
/**
* Informs listeners that a currently active RTT session has been terminated by the remote
* side of the coll.
* @hide
*/
@TestApi
public final void sendRttSessionRemotelyTerminated() {
mListeners.forEach((l) -> l.onRttSessionRemotelyTerminated(Connection.this));
}
/**
* Informs listeners that the remote side of the call has requested an upgrade to include an
* RTT session in the call.
* @hide
*/
@TestApi
public final void sendRemoteRttRequest() {
mListeners.forEach((l) -> l.onRemoteRttRequest(Connection.this));
}
/**
* Notifies this Connection that the {@link #getAudioState()} property has a new value.
*
* @param state The new connection audio state.
* @deprecated Use {@link #onCallAudioStateChanged(CallAudioState)} instead.
* @hide
*/
@SystemApi
@Deprecated
public void onAudioStateChanged(AudioState state) {}
/**
* Notifies this Connection that the {@link #getCallAudioState()} property has a new value.
*
* @param state The new connection audio state.
*/
public void onCallAudioStateChanged(CallAudioState state) {}
/**
* Notifies this Connection of an internal state change. This method is called after the
* state is changed.
*
* @param state The new state, one of the {@code STATE_*} constants.
*/
public void onStateChanged(int state) {}
/**
* Notifies this Connection of a request to play a DTMF tone.
*
* @param c A DTMF character.
*/
public void onPlayDtmfTone(char c) {}
/**
* Notifies this Connection of a request to stop any currently playing DTMF tones.
*/
public void onStopDtmfTone() {}
/**
* Notifies this Connection of a request to disconnect.
*/
public void onDisconnect() {}
/**
* Notifies this Connection of a request to disconnect a participant of the conference managed
* by the connection.
*
* @param endpoint the {@link Uri} of the participant to disconnect.
* @hide
*/
public void onDisconnectConferenceParticipant(Uri endpoint) {}
/**
* Notifies this Connection of a request to separate from its parent conference.
*/
public void onSeparate() {}
/**
* Notifies this Connection of a request to abort.
*/
public void onAbort() {}
/**
* Notifies this Connection of a request to hold.
*/
public void onHold() {}
/**
* Notifies this Connection of a request to exit a hold state.
*/
public void onUnhold() {}
/**
* Notifies this Connection, which is in {@link #STATE_RINGING}, of
* a request to accept.
*
* @param videoState The video state in which to answer the connection.
*/
public void onAnswer(int videoState) {}
/**
* Notifies this Connection, which is in {@link #STATE_RINGING}, of
* a request to accept.
*/
public void onAnswer() {
onAnswer(VideoProfile.STATE_AUDIO_ONLY);
}
/**
* Notifies this Connection, which is in {@link #STATE_RINGING}, of
* a request to reject.
*/
public void onReject() {}
/**
* Notifies this Connection, which is in {@link #STATE_RINGING}, of
* a request to reject with a message.
*/
public void onReject(String replyMessage) {}
/**
* Notifies the Connection of a request to silence the ringer.
*
* @hide
*/
public void onSilence() {}
/**
* Notifies this Connection whether the user wishes to proceed with the post-dial DTMF codes.
*/
public void onPostDialContinue(boolean proceed) {}
/**
* Notifies this Connection of a request to pull an external call to the local device.
* <p>
* The {@link InCallService} issues a request to pull an external call to the local device via
* {@link Call#pullExternalCall()}.
* <p>
* For a Connection to be pulled, both the {@link Connection#CAPABILITY_CAN_PULL_CALL}
* capability and {@link Connection#PROPERTY_IS_EXTERNAL_CALL} property bits must be set.
* <p>
* For more information on external calls, see {@link Connection#PROPERTY_IS_EXTERNAL_CALL}.
*/
public void onPullExternalCall() {}
/**
* Notifies this Connection of a {@link Call} event initiated from an {@link InCallService}.
* <p>
* The {@link InCallService} issues a Call event via {@link Call#sendCallEvent(String, Bundle)}.
* <p>
* Where possible, the Connection should make an attempt to handle {@link Call} events which
* are part of the {@code android.telecom.*} namespace. The Connection should ignore any events
* it does not wish to handle. Unexpected events should be handled gracefully, as it is
* possible that a {@link InCallService} has defined its own Call events which a Connection is
* not aware of.
* <p>
* See also {@link Call#sendCallEvent(String, Bundle)}.
*
* @param event The call event.
* @param extras Extras associated with the call event.
*/
public void onCallEvent(String event, Bundle extras) {}
/**
* Notifies this {@link Connection} of a change to the extras made outside the
* {@link ConnectionService}.
* <p>
* These extras changes can originate from Telecom itself, or from an {@link InCallService} via
* the {@link android.telecom.Call#putExtras(Bundle)} and
* {@link Call#removeExtras(List)}.
*
* @param extras The new extras bundle.
*/
public void onExtrasChanged(Bundle extras) {}
/**
* Notifies this {@link Connection} that its {@link ConnectionService} is responsible for
* displaying its incoming call user interface for the {@link Connection}.
* <p>
* Will only be called for incoming calls added via a self-managed {@link ConnectionService}
* (see {@link PhoneAccount#CAPABILITY_SELF_MANAGED}), where the {@link ConnectionService}
* should show its own incoming call user interface.
* <p>
* Where there are ongoing calls in other self-managed {@link ConnectionService}s, or in a
* regular {@link ConnectionService}, the Telecom framework will display its own incoming call
* user interface to allow the user to choose whether to answer the new incoming call and
* disconnect other ongoing calls, or to reject the new incoming call.
* <p>
* You should trigger the display of the incoming call user interface for your application by
* showing a {@link Notification} with a full-screen {@link Intent} specified.
* For example:
* <pre><code>
* // Create an intent which triggers your fullscreen incoming call user interface.
* Intent intent = new Intent(Intent.ACTION_MAIN, null);
* intent.setFlags(Intent.FLAG_ACTIVITY_NO_USER_ACTION | Intent.FLAG_ACTIVITY_NEW_TASK);
* intent.setClass(context, YourIncomingCallActivity.class);
* PendingIntent pendingIntent = PendingIntent.getActivity(context, 1, intent, 0);
*
* // Build the notification as an ongoing high priority item; this ensures it will show as
* // a heads up notification which slides down over top of the current content.
* final Notification.Builder builder = new Notification.Builder(context);
* builder.setOngoing(true);
* builder.setPriority(Notification.PRIORITY_HIGH);
*
* // Set notification content intent to take user to fullscreen UI if user taps on the
* // notification body.
* builder.setContentIntent(pendingIntent);
* // Set full screen intent to trigger display of the fullscreen UI when the notification
* // manager deems it appropriate.
* builder.setFullScreenIntent(pendingIntent, true);
*
* // Setup notification content.
* builder.setSmallIcon( yourIconResourceId );
* builder.setContentTitle("Your notification title");
* builder.setContentText("Your notification content.");
*
* // Use builder.addAction(..) to add buttons to answer or reject the call.
*
* NotificationManager notificationManager = mContext.getSystemService(
* NotificationManager.class);
* notificationManager.notify(YOUR_TAG, YOUR_ID, builder.build());
* </code></pre>
*/
public void onShowIncomingCallUi() {}
/**
* Notifies this {@link Connection} that the user has requested an RTT session.
* The connection service should call {@link #sendRttInitiationSuccess} or
* {@link #sendRttInitiationFailure} to inform Telecom of the success or failure of the
* request, respectively.
* @param rttTextStream The object that should be used to send text to or receive text from
* the in-call app.
* @hide
*/
@TestApi
public void onStartRtt(@NonNull RttTextStream rttTextStream) {}
/**
* Notifies this {@link Connection} that it should terminate any existing RTT communication
* channel. No response to Telecom is needed for this method.
* @hide
*/
@TestApi
public void onStopRtt() {}
/**
* Notifies this connection of a response to a previous remotely-initiated RTT upgrade
* request sent via {@link #sendRemoteRttRequest}. Acceptance of the request is
* indicated by the supplied {@link RttTextStream} being non-null, and rejection is
* indicated by {@code rttTextStream} being {@code null}
* @hide
* @param rttTextStream The object that should be used to send text to or receive text from
* the in-call app.
*/
@TestApi
public void handleRttUpgradeResponse(@Nullable RttTextStream rttTextStream) {}
/**
* Internal method to set {@link #PROPERTY_IS_RTT}.
* @hide
*/
void setRttProperty() {
setConnectionProperties(getConnectionProperties() | PROPERTY_IS_RTT);
}
/**
* Internal method to un-set {@link #PROPERTY_IS_RTT}.
* @hide
*/
void unsetRttProperty() {
setConnectionProperties(getConnectionProperties() & (~PROPERTY_IS_RTT));
}
static String toLogSafePhoneNumber(String number) {
// For unknown number, log empty string.
if (number == null) {
return "";
}
if (PII_DEBUG) {
// When PII_DEBUG is true we emit PII.
return number;
}
// Do exactly same thing as Uri#toSafeString() does, which will enable us to compare
// sanitized phone numbers.
StringBuilder builder = new StringBuilder();
for (int i = 0; i < number.length(); i++) {
char c = number.charAt(i);
if (c == '-' || c == '@' || c == '.') {
builder.append(c);
} else {
builder.append('x');
}
}
return builder.toString();
}
private void setState(int state) {
checkImmutable();
if (mState == STATE_DISCONNECTED && mState != state) {
Log.d(this, "Connection already DISCONNECTED; cannot transition out of this state.");
return;
}
if (mState != state) {
Log.d(this, "setState: %s", stateToString(state));
mState = state;
onStateChanged(state);
for (Listener l : mListeners) {
l.onStateChanged(this, state);
}
}
}
private static class FailureSignalingConnection extends Connection {
private boolean mImmutable = false;
public FailureSignalingConnection(DisconnectCause disconnectCause) {
setDisconnected(disconnectCause);
mImmutable = true;
}
public void checkImmutable() {
if (mImmutable) {
throw new UnsupportedOperationException("Connection is immutable");
}
}
}
/**
* Return a {@code Connection} which represents a failed connection attempt. The returned
* {@code Connection} will have a {@link android.telecom.DisconnectCause} and as specified,
* and a {@link #getState()} of {@link #STATE_DISCONNECTED}.
* <p>
* The returned {@code Connection} can be assumed to {@link #destroy()} itself when appropriate,
* so users of this method need not maintain a reference to its return value to destroy it.
*
* @param disconnectCause The disconnect cause, ({@see android.telecomm.DisconnectCause}).
* @return A {@code Connection} which indicates failure.
*/
public static Connection createFailedConnection(DisconnectCause disconnectCause) {
return new FailureSignalingConnection(disconnectCause);
}
/**
* Override to throw an {@link UnsupportedOperationException} if this {@code Connection} is
* not intended to be mutated, e.g., if it is a marker for failure. Only for framework use;
* this should never be un-@hide-den.
*
* @hide
*/
public void checkImmutable() {}
/**
* Return a {@code Connection} which represents a canceled connection attempt. The returned
* {@code Connection} will have state {@link #STATE_DISCONNECTED}, and cannot be moved out of
* that state. This connection should not be used for anything, and no other
* {@code Connection}s should be attempted.
* <p>
* so users of this method need not maintain a reference to its return value to destroy it.
*
* @return A {@code Connection} which indicates that the underlying connection should
* be canceled.
*/
public static Connection createCanceledConnection() {
return new FailureSignalingConnection(new DisconnectCause(DisconnectCause.CANCELED));
}
private final void fireOnConferenceableConnectionsChanged() {
for (Listener l : mListeners) {
l.onConferenceablesChanged(this, getConferenceables());
}
}
private final void fireConferenceChanged() {
for (Listener l : mListeners) {
l.onConferenceChanged(this, mConference);
}
}
private final void clearConferenceableList() {
for (Conferenceable c : mConferenceables) {
if (c instanceof Connection) {
Connection connection = (Connection) c;
connection.removeConnectionListener(mConnectionDeathListener);
} else if (c instanceof Conference) {
Conference conference = (Conference) c;
conference.removeListener(mConferenceDeathListener);
}
}
mConferenceables.clear();
}
/**
* Handles a change to extras received from Telecom.
*
* @param extras The new extras.
* @hide
*/
final void handleExtrasChanged(Bundle extras) {
Bundle b = null;
synchronized (mExtrasLock) {
mExtras = extras;
if (mExtras != null) {
b = new Bundle(mExtras);
}
}
onExtrasChanged(b);
}
/**
* Notifies listeners that the merge request failed.
*
* @hide
*/
protected final void notifyConferenceMergeFailed() {
for (Listener l : mListeners) {
l.onConferenceMergeFailed(this);
}
}
/**
* Notifies listeners of a change to conference participant(s).
*
* @param conferenceParticipants The participants.
* @hide
*/
protected final void updateConferenceParticipants(
List<ConferenceParticipant> conferenceParticipants) {
for (Listener l : mListeners) {
l.onConferenceParticipantsChanged(this, conferenceParticipants);
}
}
/**
* Notifies listeners that a conference call has been started.
* @hide
*/
protected void notifyConferenceStarted() {
for (Listener l : mListeners) {
l.onConferenceStarted();
}
}
/**
* Notifies listeners when a change has occurred to the Connection which impacts its ability to
* be a part of a conference call.
* @param isConferenceSupported {@code true} if the connection supports being part of a
* conference call, {@code false} otherwise.
* @hide
*/
protected void notifyConferenceSupportedChanged(boolean isConferenceSupported) {
for (Listener l : mListeners) {
l.onConferenceSupportedChanged(this, isConferenceSupported);
}
}
/**
* Sends an event associated with this {@code Connection} with associated event extras to the
* {@link InCallService}.
* <p>
* Connection events are used to communicate point in time information from a
* {@link ConnectionService} to a {@link InCallService} implementations. An example of a
* custom connection event includes notifying the UI when a WIFI call has been handed over to
* LTE, which the InCall UI might use to inform the user that billing charges may apply. The
* Android Telephony framework will send the {@link #EVENT_CALL_MERGE_FAILED} connection event
* when a call to {@link Call#mergeConference()} has failed to complete successfully. A
* connection event could also be used to trigger UI in the {@link InCallService} which prompts
* the user to make a choice (e.g. whether they want to incur roaming costs for making a call),
* which is communicated back via {@link Call#sendCallEvent(String, Bundle)}.
* <p>
* Events are exposed to {@link InCallService} implementations via
* {@link Call.Callback#onConnectionEvent(Call, String, Bundle)}.
* <p>
* No assumptions should be made as to how an In-Call UI or service will handle these events.
* The {@link ConnectionService} must assume that the In-Call UI could even chose to ignore
* some events altogether.
* <p>
* Events should be fully qualified (e.g. {@code com.example.event.MY_EVENT}) to avoid
* conflicts between {@link ConnectionService} implementations. Further, custom
* {@link ConnectionService} implementations shall not re-purpose events in the
* {@code android.*} namespace, nor shall they define new event types in this namespace. When
* defining a custom event type, ensure the contents of the extras {@link Bundle} is clearly
* defined. Extra keys for this bundle should be named similar to the event type (e.g.
* {@code com.example.extra.MY_EXTRA}).
* <p>
* When defining events and the associated extras, it is important to keep their behavior
* consistent when the associated {@link ConnectionService} is updated. Support for deprecated
* events/extras should me maintained to ensure backwards compatibility with older
* {@link InCallService} implementations which were built to support the older behavior.
*
* @param event The connection event.
* @param extras Optional bundle containing extra information associated with the event.
*/
public void sendConnectionEvent(String event, Bundle extras) {
for (Listener l : mListeners) {
l.onConnectionEvent(this, event, extras);
}
}
}