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Tencent Real-Time Communication
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    TRTCVoiceRoom (iOS)

    Last updated: 2024-05-21 15:05:28
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      TRTCVoiceRoom is based on Tencent Real-Time Communication (TRTC) and Tencent Cloud Chat. Wit:
      A user can create an audio chat room and become a speaker or enter an audio chat room as a listener.
      The room owner can invite a listener to speak as well as remove speaker from the seat.
      The room owner can also block a seat. Listeners cannot request to take a blocked seat.
      A listener can request to speak and become a speaker. A speaker can also become a listener.
      All users can send text and custom messages. Custom messages can be used to send on-screen comments, give likes, and send gifts.
      Note:
      All TUIKit components are based on two PaaS services of Tencent Cloud, namely TRTC and Chat. When you activate TRTC, the Chat SDK trial edition (which supports up to 100 DAUs) will be activated automatically. For billing details of Chat, see Pricing.
      TRTCVoiceRoom is an open-source class depending on two closed-source Tencent Cloud SDKs. For the specific implementation process, see Audio Chat Room (iOS).
      The TRTC SDK is used as a low-latency audio chat component.
      The AVChatRoom feature of the Chat SDK is used to implement chat rooms. The attribute APIs of Chat are used to store room information such as the seat list, and invitation signaling is used to send requests to speak or invite others to speak.

      TRTCVoiceRoom API Overview

      Basic SDK APIs

      API
      Description
      Gets a singleton object.
      Terminates a singleton object.
      Sets event callbacks.
      Sets the thread where event callbacks are.
      Logs in.
      Logs out.
      Sets profile.

      Room APIs

      API
      Description
      Creates a room (called by room owner). If the room does not exist, the system will automatically create a room.
      Terminates a room (called by room owner).
      Enters a room (called by listener).
      Exits a room (called by listener).
      Gets room list details.
      Gets the user information of the specified userId. If the value is nil, the information of all users in the room is obtained.

      Seat management APIs

      API
      Description
      Becomes a speaker (called by room owner or listener).
      Changes the seat (called by speaker).
      Becomes a listener (called by speaker).
      Places a user in a seat (called by room owner).
      Removes a speaker (called by room owner).
      Mutes/Unmutes a seat (called by room owner).
      Blocks/Unblocks a seat (called by room owner).

      Local audio APIs

      API
      Description
      Starts mic capturing.
      Stops mic capturing.
      Sets audio quality.
      Mutes/Unmutes local audio.
      Sets whether to play sound from the device’s speaker or receiver.
      Sets mic capturing volume.
      Sets playback volume.
      Enables/Disables in-ear monitoring.

      Remote audio APIs

      API
      Description
      Mutes/Unmutes a specified member.
      Mutes/Unmutes all members.

      Background music and audio effect APIs

      API
      Description
      Gets the background music and audio effect management object TXAudioEffectManager.

      Message sending APIs

      API
      Description
      Broadcasts a text chat message in a room. This API is generally used for on-screen comments.
      Sends a custom text message.

      Invitation signaling APIs

      API
      Description
      Sends an invitation.
      Accepts an invitation.
      Declines an invitation.
      Cancels an invitation.

      TRTCVoiceRoomDelegate API Overview

      Common event callbacks

      API
      Description
      Callback for error.
      Callback for warning.
      Callback of log.

      Room event callback APIs

      API
      Description
      The room was terminated.
      The room information changed.
      User volume

      Seat list change callback APIs

      API
      Description
      All seat changes
      Someone became a speaker or was made a speaker by the room owner.
      Someone became a listener or was made a listener by the room owner.
      The room owner muted a seat.
      Whether a user’s mic is muted
      The room owner blocked a seat.

      Callback APIs for room entry/exit by listener

      API
      Description
      A listener entered the room.
      A listener exited the room.

      Message event callback APIs

      API
      Description
      A text chat message was received.
      A custom message was received.

      Signaling event callback APIs

      API
      Description
      An invitation was received.
      The invitee accepted the invitation.
      The invitee declined the invitation.
      The inviter canceled the invitation.

      Basic SDK APIs

      sharedInstance

      This API is used to get a TRTCVoiceRoom singleton object.
      /**
      * Get a `TRTCVoiceRoom` singleton object
      *
      * - returns: `TRTCVoiceRoom` instance
      * - note: to terminate a singleton object, call {@link TRTCVoiceRoom#destroySharedInstance()}.
      */
      + (instancetype)sharedInstance NS_SWIFT_NAME(shared());

      destroySharedInstance

      This API is used to terminate a TRTCVoiceRoom singleton object.
      Note:
      After the instance is terminated, the externally cached TRTCVoiceRoom instance can no longer be used. You need to call sharedInstance again to get a new instance.
      /**
      * Terminate a `TRTCVoiceRoom` singleton object
      *
      * - Note: After the instance is terminated, the externally cached `TRTCVoiceRoom` instance can no longer be used. You need to call {@link TRTCVoiceRoom#sharedInstance()} again to get a new instance.
      */
      + (void)destroySharedInstance NS_SWIFT_NAME(destroyShared());

      setDelegate

      This API is used to set the event callback of TRTCVoiceRoom. You can use TRTCVoiceRoomDelegate to get different status notifications of TRTCVoiceRoom.
      /**
      * Set the event callbacks of the component
      * 
      * You can use `TRTCVoiceRoomDelegate` to get different status notifications of `TRTCVoiceRoom`
      *
      * - parameter delegate Callback API
      * - Note: Callback events in `TRTCVoiceRoom` are called back to you in the main queue by default. If you need to specify a queue for event callback, use {@link TRTCVoiceRoom#setDelegateQueue(queue)}.
      */
      - (void)setDelegate:(id<TRTCVoiceRoomDelegate>)delegate NS_SWIFT_NAME(setDelegate(delegate:));
      Note:
      setDelegate is the delegate callback of TRTCVoiceRoom.

      setDelegateQueue

      This API is used to set the thread queue for event callbacks. The main thread (MainQueue) is used by default.
      /**
      * Set the queue for event callbacks
      *
      * - parameter queue Queue. Various status callback notifications in `TRTCVoiceRoom` will be sent to the queue you specify.
      */
      - (void)setDelegateQueue:(dispatch_queue_t)queue NS_SWIFT_NAME(setDelegateQueue(queue:));
      
      The parameters are described below:
      Parameter
      Type
      Description
      queue
      dispatch_queue_t
      The status notifications of TRTCVoiceRoom are sent to the thread queue you specify.

      login

      Login
      - (void)login:(int)sdkAppID
             userId:(NSString *)userId
            userSig:(NSString *)userSig
           callback:(ActionCallback _Nullable)callback NS_SWIFT_NAME(login(sdkAppID:userId:userSig:callback:));
      
      The parameters are described below:
      Parameter
      Type
      Description
      sdkAppId
      int
      You can view SDKAppID in Application Management > Application Info of the TRTC console.
      userId
      NSString
      ID of the current user, which is a string that can contain only letters (a-z and A-Z), digits (0-9), hyphens (-), and underscores (_)
      userSig
      NSString
      Tencent Cloud's proprietary security signature. For how to calculate and use it, see FAQs > UserSig.
      callback
      ActionCallback
      Callback for login. The code is 0 if login succeeds.

      logout

      Log out
      - (void)logout:(ActionCallback _Nullable)callback NS_SWIFT_NAME(logout(callback:));
      The parameters are described below:
      Parameter
      Type
      Description
      callback
      ActionCallback
      Callback for logout. The code is 0 if logout succeeds.

      setSelfProfile

      This API is used to set the profile.
      - (void)setSelfProfile:(NSString *)userName avatarURL:(NSString *)avatarURL callback:(ActionCallback _Nullable)callback NS_SWIFT_NAME(setSelfProfile(userName:avatarURL:callback:));
      The parameters are described below:
      Parameter
      Type
      Description
      userName
      NSString
      Username
      avatarURL
      NSString
      Profile picture URL
      callback
      ActionCallback
      Callback for profile setting. The code is 0 if the operation succeeds.

      Room APIs

      createRoom

      This API is used to create a room (called by room owner).
      - (void)createRoom:(int)roomID roomParam:(VoiceRoomParam *)roomParam callback:(ActionCallback _Nullable)callback NS_SWIFT_NAME(createRoom(roomID:roomParam:callback:));
      The parameters are described below:
      Parameter
      Type
      Description
      roomId
      int
      The room ID. You need to assign and manage the IDs in a centralized manner. Multiple roomID values can be aggregated into a karaoke room list. Currently, Tencent Cloud does not provide management services for room lists. Please manage your own room lists.
      roomParam
      VoiceRoomParam
      Room information, such as room name, seat list information, and cover information. To manage seats, you must enter the number of seats in the room.
      callback
      ActionCallback
      Callback for room creation. The code is 0 if the operation succeeds.
      The process of creating a karaoke room and becoming a speaker is as follows:
      1. A user calls createRoom to create an audio chat room, passing in room attributes (e.g. room ID, whether listeners require room owner’s consent to speak, number of seats).
      2. After creating the room, the user calls enterSeat to become a speaker.
      3. The user will receive an onSeatListChanget notification about the change of the seat list, and can update the change to the UI.
      4. The user will also receive an onAnchorEnterSeat notification that someone became a speaker, and mic capturing will be enabled automatically.

      destroyRoom

      This API is used to terminate a room (called by room owner).
      - (void)destroyRoom:(ActionCallback _Nullable)callback NS_SWIFT_NAME(destroyRoom(callback:));
      The parameters are described below:
      Parameter
      Type
      Description
      callback
      ActionCallback
      Callback for room termination. The code is 0 if the operation succeeds.

      enterRoom

      This API is used to enter a room (called by listener).
      - (void)enterRoom:(NSInteger)roomID callback:(ActionCallback _Nullable)callback NS_SWIFT_NAME(enterRoom(roomID:callback:));
      The parameters are described below:
      Parameter
      Type
      Description
      roomId
      NSInteger
      The room ID.
      callback
      ActionCallback
      Callback for room entry. The code is 0 if the operation succeeds.
      The process of entering a room as a listener is as follows:
      1. A user gets the latest audio chat room list from your server. The list may contain the roomId and room information of multiple audio chat rooms.
      2. The user selects a room, and calls enterRoom with the room ID passed in to enter the room.
      3. After entering the room, the user receives an onRoomInfoChange notification about room attribute change from the component. The attributes can be recorded, and corresponding changes can be made to the UI, including room name, whether room owner’s consent is required for listeners to speak, etc.
      4. The user will receive an onSeatListChange notification about the change of the seat list and can update the change to the UI.
      5. The user will also receive an onAnchorEnterSeat notification that someone became a speaker.

      exitRoom

      Leave room
      - (void)exitRoom:(ActionCallback _Nullable)callback NS_SWIFT_NAME(exitRoom(callback:));
      The parameters are described below:
      Parameter
      Type
      Description
      callback
      ActionCallback
      Callback for room exit. The code is 0 if the operation succeeds.

      getRoomInfoList

      This API is used to get room list details. The room name and cover are set by the room owner via roomInfo when calling createRoom().
      Note:
      You don’t need this API if both the room list and room information are managed on your server.
      - (void)getRoomInfoList:(NSArray<NSNumber *> *)roomIdList callback:(VoiceRoomInfoCallback _Nullable)callback NS_SWIFT_NAME(getRoomInfoList(roomIdList:callback:));
      The parameters are described below:
      Parameter
      Type
      Description
      roomIdList
      NSArray<NSNumber>
      Room ID list
      callback
      RoomInfoCallback
      Callback of room details

      getUserInfoList

      This API is used to get the information of specific users (userId).
      - (void)getUserInfoList:(NSArray<NSString *> * _Nullable)userIDList callback:(VoiceRoomUserListCallback _Nullable)callback NS_SWIFT_NAME(getUserInfoList(userIDList:callback:));
      The parameters are described below:
      Parameter
      Type
      Description
      userIdList
      NSArray<NSString>
      IDs of the users to query. If this parameter is null, the information of all users in the room is queried.
      userlistcallback
      UserListCallback
      Callback of user details

      Seat Management APIs

      enterSeat

      This API is used to become a speaker (called by room owner or listener).
      Note:
      After a user becomes a speaker, all members in the room will receive an onSeatListChange notification and an onAnchorEnterSeat notification.
      - (void)enterSeat:(NSInteger)seatIndex callback:(ActionCallback _Nullable)callback NS_SWIFT_NAME(enterSeat(seatIndex:callback:));
      The parameters are described below:
      Parameter
      Type
      Description
      seatIndex
      NSInteger
      Number of the seat to take
      callback
      ActionCallback
      Callback for the operation
      Calling this API will immediately modify the seat list. In cases where listeners need the room owner’s consent to take a seat, you can call sendInvitation first to send a request and, after receiving onInvitationAccept, call this API.

      moveSeat

      This API is used to change one’s seat (called by speaker).
      Note:
      After the seat change, all users in the room will receive the onSeatListChange, onAnchorLeaveSeat, and onAnchorEnterSeat notifications. This API will only change the user’s seat number, not the user role.
      - (NSInteger)moveSeat:(NSInteger)seatIndex callback:(ActionCallback _Nullable)callback
      NS_SWIFT_NAME(moveSeat(seatIndex:callback:))
      The parameters are described below:
      Parameter
      Type
      Description
      seatIndex
      NSInteger
      Number of the seat to change to
      callback
      ActionCallback
      Callback for the operation
      Response parameters:
      Parameter
      Type
      Description
      code
      NSInteger
      Result of seat change. 0: operation successful; 10001: API rate limit exceeded; other values: operation failed
      Calling this API will immediately modify the seat list. In cases where listeners need the room owner’s consent to take a seat, you can call sendInvitation first to send a request and, after receiving onInvitationAccept, call this API.

      leaveSeat

      This API is used to become a listener (called by speaker).
      Note:
      After a speaker becomes a listener, all members in the room will receive an onSeatListChange notification and an onAnchorLeaveSeat notification.
      - (void)leaveSeat:(ActionCallback _Nullable)callback NS_SWIFT_NAME(leaveSeat(callback:));
      The parameters are described below:
      Parameter
      Type
      Description
      callback
      ActionCallback
      Callback for the operation

      pickSeat

      This API is used to place a user in a seat (called by room owner).
      Note:
      After the room owner places a user in a seat, all members in the room will receive an onSeatListChange notification and an onAnchorEnterSeat notification.
      - (void)pickSeat:(NSInteger)seatIndex userId:(NSString *)userId callback:(ActionCallback _Nullable)callback NS_SWIFT_NAME(pickSeat(seatIndex:userId:callback:));
      The parameters are described below:
      Parameter
      Type
      Description
      seatIndex
      NSInteger
      Number of the seat to place the user in
      userId
      NSString
      User ID
      callback
      ActionCallback
      Callback for the operation
      Calling this API will immediately modify the seat list. In cases where the room owner needs listeners’ consent to make them speakers, you can call sendInvitation first to send a request and, after receiving onInvitationAccept, call pickSeat.

      kickSeat

      This API is used to remove a speaker (called by room owner).
      Note:
      After a speaker is removed, all members in the room will receive an onSeatListChange notification and an onAnchorLeaveSeat notification.
      - (void)kickSeat:(NSInteger)seatIndex callback:(ActionCallback _Nullable)callback NS_SWIFT_NAME(kickSeat(seatIndex:callback:));
      The parameters are described below:
      Parameter
      Type
      Description
      seatIndex
      NSInteger
      Seat number of the speaker to remove
      callback
      ActionCallback
      Callback for the operation
      Calling this API will immediately modify the seat list.

      muteSeat

      This API is used to mute/unmute a seat (called by room owner).
      Note:
      After a seat is muted/unmuted, all members in the room will receive an onSeatListChange notification and an onSeatMute notification.
      - (void)muteSeat:(NSInteger)seatIndex isMute:(BOOL)isMute callback:(ActionCallback _Nullable)callback NS_SWIFT_NAME(muteSeat(seatIndex:isMute:callback:));
      The parameters are described below:
      Parameter
      Type
      Description
      seatIndex
      NSInteger
      Number of the seat to mute/unmute
      isMute
      BOOL
      YES: mute the seat; NO: unmute the seat
      callback
      ActionCallback
      Callback for the operation
      Calling this API will immediately modify the seat list. The speaker on the seat specified by seatIndex will call muteAudio to mute/unmute his or her audio.

      closeSeat

      This API is used to block/unblock a seat (called by room owner).
      Note:
      After a seat is blocked/unblocked, all members in the room will receive an onSeatListChange notification and an onSeatClose notification.
      - (void)closeSeat:(NSInteger)seatIndex isClose:(BOOL)isClose callback:(ActionCallback _Nullable)callback NS_SWIFT_NAME(closeSeat(seatIndex:isClose:callback:));
      The parameters are described below:
      Parameter
      Type
      Description
      seatIndex
      NSInteger
      Number of the seat to block/unblock
      isClose
      BOOL
      YES: block the seat; NO: unblock the seat
      callback
      ActionCallback
      Callback for the operation
      Calling this API will immediately modify the seat list. The speaker on the seat specified by seatIndex will leave the seat.

      Local Audio APIs

      startMicrophone

      This API is used to start mic capturing.
      - (void)startMicrophone;

      stopMicrophone

      This API is used to stop mic capturing.
      - (void)stopMicrophone;

      setAudioQuality

      This API is used to set audio quality.
      - (void)setAuidoQuality:(NSInteger)quality NS_SWIFT_NAME(setAuidoQuality(quality:));
      The parameters are described below:
      Parameter
      Type
      Description
      quality
      NSInteger
      The audio quality. For more information, see setAudioQuality().

      muteLocalAudio

      This API is used to mute/unmute local audio.
      - (void)muteLocalAudio:(BOOL)mute NS_SWIFT_NAME(muteLocalAudio(mute:));
      The parameters are described below:
      Parameter
      Type
      Description
      mute
      BOOL
      Whether to mute or unmute audio. For more information, see muteLocalAudio().

      setSpeaker

      This API is used to set whether to play sound from the device’s speaker or receiver.
      - (void)setSpeaker:(BOOL)userSpeaker NS_SWIFT_NAME(setSpeaker(userSpeaker:));
      The parameters are described below:
      Parameter
      Type
      Description
      useSpeaker
      BOOL
      YES: speaker; NO: receiver

      setAudioCaptureVolume

      This API is used to set the mic capturing volume.
      - (void)setAudioCaptureVolume:(NSInteger)voluem NS_SWIFT_NAME(setAudioCaptureVolume(volume:));
      The parameters are described below:
      Parameter
      Type
      Description
      volume
      NSInteger
      Capturing volume. Value range: 0-100. Default value: 100

      setAudioPlayoutVolume

      This API is used to set the playback volume.
      - (void)setAudioPlayoutVolume:(NSInteger)volume NS_SWIFT_NAME(setAudioPlayoutVolume(volume:));
      The parameters are described below:
      Parameter
      Type
      Description
      volume
      NSInteger
      Playback volume. Value range: 0-100. Default value: 100

      muteRemoteAudio

      This API is used to mute/unmute a specified user.
      - (void)muteRemoteAudio:(NSString *)userId mute:(BOOL)mute NS_SWIFT_NAME(muteRemoteAudio(userId:mute:));
      The parameters are described below:
      Parameter
      Type
      Description
      userId
      NSString
      ID of the user to mute/unmute
      mute
      BOOL
      YES: mute; NO: unmute

      muteAllRemoteAudio

      This API is used to mute/unmute all users.
      - (void)muteAllRemoteAudio:(BOOL)isMute NS_SWIFT_NAME(muteAllRemoteAudio(isMute:));
      The parameters are described below:
      Parameter
      Type
      Description
      mute
      BOOL
      YES: mute; NO: unmute

      setVoiceEarMonitorEnable

      This API is used to enable/disable in-ear monitoring.
      - (void)setVoiceEarMonitorEnable:(BOOL)enable NS_SWIFT_NAME(setVoiceEarMonitor(enable:));
      The parameters are described below:
      Parameter
      Type
      Description
      enable
      BOOL
      YES: enable in-ear monitoring; NO: disable in-ear monitoring

      Background Music and Audio Effect APIs

      getAudioEffectManager

      This API is used to get the background music and audio effect management object TXAudioEffectManager.
      - (TXAudioEffectManager * _Nullable)getAudioEffectManager;

      Message Sending APIs

      sendRoomTextMsg

      This API is used to broadcast a text chat message in a room, which is generally used for on-screen comments.
      - (void)sendRoomTextMsg:(NSString *)message callback:(ActionCallback _Nullable)callback NS_SWIFT_NAME(sendRoomTextMsg(message:callback:));
      The parameters are described below:
      Parameter
      Type
      Description
      message
      NSString
      Text message
      callback
      ActionCallback
      Callback for the operation

      sendRoomCustomMsg

      This API is used to send a custom text message.
      - (void)sendRoomCustomMsg:(NSString *)cmd message:(NSString *)message callback:(ActionCallback _Nullable)callback NS_SWIFT_NAME(sendRoomCustomMsg(cmd:message:callback:));
      The parameters are described below:
      Parameter
      Type
      Description
      cmd
      NSString
      Custom command word used to distinguish between different message types
      message
      NSString
      Text message
      callback
      ActionCallback
      Callback for the operation

      Invitation Signaling APIs

      sendInvitation

      This API is used to send an invitation.
      - (NSString *)sendInvitation:(NSString *)cmd
                            userId:(NSString *)userId
                           content:(NSString *)content
                          callback:(ActionCallback _Nullable)callback NS_SWIFT_NAME(sendInvitation(cmd:userId:content:callback:));
      The parameters are described below:
      Parameter
      Type
      Description
      cmd
      NSString
      Custom command of business
      userId
      NSString
      ID of the user to invite
      content
      NSString
      Invitation content
      callback
      ActionCallback
      Callback for the operation
      Response parameters:
      Parameter
      Type
      Description
      inviteId
      NSString
      Invitation ID

      acceptInvitation

      This API is used to accept an invitation.
      - (void)acceptInvitation:(NSString *)identifier callback:(ActionCallback _Nullable)callback NS_SWIFT_NAME(acceptInvitation(id:callback:));
      The parameters are described below:
      Parameter
      Type
      Description
      id
      NSString
      Invitation ID
      callback
      ActionCallback
      Callback for the operation

      rejectInvitation

      This API is used to decline an invitation.
      - (void)rejectInvitation:(NSString *)identifier callback:(ActionCallback _Nullable)callback NS_SWIFT_NAME(rejectInvitation(id:callback:));
      The parameters are described below:
      Parameter
      Type
      Description
      id
      NSString
      Invitation ID
      callback
      ActionCallback
      Callback for the operation

      cancelInvitation

      This API is used to cancel an invitation.
      - (void)cancelInvitation:(NSString *)identifier callback:(ActionCallback _Nullable)callback NS_SWIFT_NAME(cancelInvitation(id:callback:));
      The parameters are described below:
      Parameter
      Type
      Description
      id
      NSString
      Invitation ID
      callback
      ActionCallback
      Callback for the operation

      TRTCVoiceRoomDelegate Event Callback APIs

      Common Event Callback APIs

      onError

      Callback for error.
      This callback indicates that the SDK encountered an unrecoverable error. Such errors must be listened for, and UI reminders should be sent to users depending if necessary.
      - (void)onError:(int)code
                      message:(NSString*)message
      NS_SWIFT_NAME(onError(code:message:));
      The parameters are described below:
      Parameter
      Type
      Description
      code
      int
      Error code
      message
      NSString
      Error message

      onWarning

      Callback for warning.
      - (void)onWarning:(int)code
                        message:(NSString *)message
      NS_SWIFT_NAME(onWarning(code:message:));
      The parameters are described below:
      Parameter
      Type
      Description
      code
      int
      Error code
      message
      NSString
      Warning message

      onDebugLog

      Callback for log.
      - (void)onDebugLog:(NSString *)message
      NS_SWIFT_NAME(onDebugLog(message:));
      The parameters are described below:
      Parameter
      Type
      Description
      message
      NSString
      Log information

      Room Event Callback APIs

      onRoomDestroy

      Callback for room termination. When the owner terminates the room, all users in the room will receive this callback.
      - (void)onRoomDestroy:(NSString *)roomId
      NS_SWIFT_NAME(onRoomDestroy(roomId:));
      The parameters are described below:
      Parameter
      Type
      Description
      roomId
      NSString
      Room ID

      onRoomInfoChange

      Callback for change of room information. This callback is sent after successful room entry. The information in roomInfo is passed in by the room owner during room creation.
      - (void)onRoomInfoChange:(VoiceRoomInfo *)roomInfo
      NS_SWIFT_NAME(onRoomInfoChange(roomInfo:));
      The parameters are described below:
      Parameter
      Type
      Description
      roomInfo
      VoiceRoomInfo
      Room information

      onUserMicrophoneMute

      Callback of whether a user’s mic is muted. When a user calls muteLocalAudio, all members in the room will receive this callback.
      - (void)onUserMicrophoneMute:(NSString *)userId mute:(BOOL)mute
      NS_SWIFT_NAME(onUserMicrophoneMute(userId:mute:));
      
      The parameters are described below:
      Parameter
      Type
      Description
      userId
      NSString
      User ID
      mute
      BOOL
      YES: muted; NO: unmuted

      onUserVolumeUpdate

      Notification to all members of the volume after the volume reminder is enabled.
      - (void)onUserVolumeUpdate:(NSArray<TRTCVolumeInfo *> *)userVolumes totalVolume:(NSInteger)totalVolume
      NS_SWIFT_NAME(onUserVolumeUpdate(userVolumes:totalVolume:));
      The parameters are described below:
      Parameter
      Type
      Description
      userVolumes
      NSArray
      List of user volumes
      totalVolume
      NSInteger
      Total volume. Value range: 0-100

      Seat Callback APIs

      onSeatListChange

      Callback for all seat changes.
      - (void)onSeatInfoChange:(NSArray<VoiceRoomSeatInfo *> *)seatInfolist
      NS_SWIFT_NAME(onSeatListChange(seatInfoList:));
      The parameters are described below:
      Parameter
      Type
      Description
      seatInfoList
      NSArray<VoiceRoomSeatInfo>
      Full seat list

      onAnchorEnterSeat

      Someone became a speaker or was made a speaker by the owner.
      - (void)onAnchorEnterSeat:(NSInteger)index
                                    user:(VoiceRoomUserInfo *)user
      NS_SWIFT_NAME(onAnchorEnterSeat(index:user:));
      The parameters are described below:
      Parameter
      Type
      Description
      index
      NSInteger
      Number of the seat taken
      user
      VoiceRoomUserInfo
      Information of the user who left the seat

      onAnchorLeaveSeat

      A speaker became a listener or was moved to listeners by the room owner.
      - (void)onAnchorLeaveSeat:(NSInteger)index
                           user:(VoiceRoomUserInfo *)user
      NS_SWIFT_NAME(onAnchorLeaveSeat(index:user:));
      The parameters are described below:
      Parameter
      Type
      Description
      index
      NSInteger
      Number of the seat the user left
      user
      VoiceRoomUserInfo
      Information of the user who left the seat

      onSeatMute

      The room owner muted/unmuted a seat.
      - (void)onSeatMute:(NSInteger)index
                  isMute:(BOOL)isMute
      NS_SWIFT_NAME(onSeatMute(index:isMute:));
      The parameters are described below:
      Parameter
      Type
      Description
      index
      NSInteger
      The seat muted/unmuted
      isMute
      BOOL
      YES: The seat was muted; NO`: The seat was unmuted.

      onSeatClose

      The room owner blocked/unblocked a seat.
      - (void)onSeatClose:(NSInteger)index
                  isClose:(BOOL)isClose
      NS_SWIFT_NAME(onSeatClose(index:isClose:));
      The parameters are described below:
      Parameter
      Type
      Description
      index
      NSInteger
      The seat blocked/unblocked
      isClose
      BOOL
      YES: The seat was blocked; NO: The seat was unblocked.

      Callback APIs for Room Entry/Exit by Listener

      onAudienceEnter

      A listener entered the room.
      - (void)onAudienceEnter:(VoiceRoomUserInfo *)userInfo
      NS_SWIFT_NAME(onAudienceEnter(userInfo:));
      The parameters are described below:
      Parameter
      Type
      Description
      userInfo
      VoiceRoomUserInfo
      Information of the listener who entered

      onAudienceExit

      A listener exited the room.
      - (void)onAudienceExit:(VoiceRoomUserInfo *)userInfo
      NS_SWIFT_NAME(onAudienceExit(userInfo:));
      The parameters are described below:
      Parameter
      Type
      Description
      userInfo
      VoiceRoomUserInfo
      Information of the user who left

      Message Event Callback APIs

      onRecvRoomTextMsg

      Callback for receiving a text chat message.
      - (void)onRecvRoomTextMsg:(NSString *)message
                       userInfo:(VoiceRoomUserInfo *)userInfo
      NS_SWIFT_NAME(onRecvRoomTextMsg(message:userInfo:));
      The parameters are described below:
      Parameter
      Type
      Description
      message
      NSString
      Text message
      userInfo
      VoiceRoomUserInfo
      Information of the sender

      onRecvRoomCustomMsg

      A custom message was received.
      - (void)onRecvRoomCustomMsg:(NSString *)command
                          message:(NSString *)message
                         userInfo:(VoiceRoomUserInfo *)userInfo
      NS_SWIFT_NAME(onRecvRoomCustomMsg(command:message:userInfo:));
      The parameters are described below:
      Parameter
      Type
      Description
      command
      NSString
      Custom command word used to distinguish between different message types
      message
      NSString
      Text message
      userInfo
      VoiceRoomUserInfo
      Information of the sender

      Invitation Signaling Callback APIs

      onReceiveNewInvitation

      An invitation was received.
      - (void)onReceiveNewInvitation:(NSString *)identifier
                             inviter:(NSString *)inviter
                                 cmd:(NSString *)cmd
                             content:(NSString *)content
      NS_SWIFT_NAME(onReceiveNewInvitation(id:inviter:cmd:content:));
      The parameters are described below:
      Parameter
      Type
      Description
      id
      NSString
      Invitation ID
      inviter
      NSString
      Inviter’s user ID
      cmd
      NSString
      Custom command word specified by business
      content
      NSString
      Content specified by business

      onInviteeAccepted

      The invitee accepted the invitation
      - (void)onInviteeAccepted:(NSString *)identifier
                        invitee:(NSString *)invitee
      NS_SWIFT_NAME(onInviteeAccepted(id:invitee:));
      The parameters are described below:
      Parameter
      Type
      Description
      id
      NSString
      Invitation ID
      invitee
      NSString
      Invitee’s user ID

      onInviteeRejected

      The invitee declined the invitation
      - (void)onInviteeRejected:(NSString *)identifier
                        invitee:(NSString *)invitee
      NS_SWIFT_NAME(onInviteeRejected(id:invitee:));
      The parameters are described below:
      Parameter
      Type
      Description
      id
      NSString
      Invitation ID
      invitee
      NSString
      Invitee’s user ID

      onInvitationCancelled

      The inviter canceled the invitation.
      - (void)onInvitationCancelled:(NSString *)identifier
                            invitee:(NSString *)invitee NS_SWIFT_NAME(onInvitationCancelled(id:invitee:));
      The parameters are described below:
      Parameter
      Type
      Description
      id
      NSString
      Invitation ID
      inviter
      NSString
      Inviter’s user ID
      
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