static TUIRoomEngine createInstance()

void destroyInstance()

static Future<TUIActionCallback> login(int sdkAppId, 
                               String userId,
                               String userSig)

static Future<TUIActionCallback> logout()

static Future<TUIActionCallback> setSelfInfo(String userName, String avatarURL)

static Future<TUIActionCallback> setLoginUserInfo(TUILoginUserInfo userInfo) 

static TUILoginUserInfo getSelfInfo()

void addObserver(TUIRoomObserver observer)

void removeObserver(TUIRoomObserver observer)

Future<TUIActionCallback> createRoom(TUIRoomInfo roomInfo)

Future<TUIActionCallback> destroyRoom()

Future<TUIValueCallBack<TUIRoomInfo>> enterRoom(String roomId)

Future<TUIActionCallback> exitRoom(bool syncWaiting)

TUIRequest connectOtherRoom(String roomId, 
                            String userId, 
                            int timeout,    
                            TUIRequestCallback? requestCallback)

Future<TUIActionCallback> disconnectOtherRoom()

Future<TUIValueCallBack<TUIRoomInfo>> fetchRoomInfo()

Future<TUIActionCallback> updateRoomNameByAdmin(String roomName)

Future<TUIActionCallback> updateRoomSpeechModeByAdmin(TUISpeechMode mode)

void setLocalVideoView(int viewId)

Future<TUIActionCallback> openLocalCamera(bool isFront, 
                                  TUIVideoQuality quality)

void closeLocalCamera()

void updateVideoQuality(TUIVideoQuality quality)

void updateVideoQualityEx(
      TUIVideoStreamType streamType, TUIRoomVideoEncoderParams params);

void setVideoResolutionMode(
      TUIVideoStreamType streamType, TUIResolutionMode resolutionMode);

void enableGravitySensor(bool enable);

void startPushLocalVideo()

void stopPushLocalVideo()

Future<void> startScreenSharing({String appGroup = ''})

Future<void> stopScreenSharing()

Future<TUIActionCallback> openLocalMicrophone(TUIAudioQuality quality)

void closeLocalMicrophone()

void updateAudioQuality(TUIAudioQuality quality)

Future<TUIActionCallback> muteLocalAudio()

Future<TUIActionCallback> unMuteLocalAudio()

void setRemoteVideoView(String userId,
                        TUIVideoStreamType streamType, 
                        int viewId)

void startPlayRemoteVideo(String userId,                              
                          TUIVideoStreamType streamType,                                     
                          TUIPlayCallback? callback)

void stopPlayRemoteVideo(String userId,
                         TUIVideoStreamType streamType)

void muteRemoteAudioStream(String userId, boolean isMute);

Future<TUIValueCallBack<TUIUserListResult>> getUserList(int nextSequence)

Future<TUIValueCallBack<TUIUserInfo>> getUserInfo(String userId)

Future<TUIActionCallback> changeUserRole(String userId, 
                                 TUIRole role)

Future<TUIActionCallback> kickRemoteUserOutOfRoom(String userId)

Future<TUIActionCallback> addCategoryTagForUsers(int tag, List<String> userList);

Future<TUIActionCallback> removeCategoryTagForUsers(int tag, List<String> userList);

Future<TUIValueCallBack<TUIUserListResult>> getUserListByTag(int tag, int nextSequence);

Future<TUIActionCallback> disableDeviceForAllUserByAdmin(TUIMediaDevice device, 
                                                 bool isDisable)

TUIRequest openRemoteDeviceByAdmin(String userId, 
                                   TUIMediaDevice device,    
                                   int timeout, 
                                   TUIRequestCallback? requestCallback)

Future<TUIActionCallback> closeRemoteDeviceByAdmin(String userId, 
                                           TUIMediaDevice device)

TUIRequest applyToAdminToOpenLocalDevice(TUIMediaDevice device, 
                                         int timeout, 
                                         TUIRequestCallback? requestCallback)

Future<TUIActionCallback> setMaxSeatCount(int maxSeatCount)

Future<TUIActionCallback> lockSeatByAdmin(int seatIndex, 
                                  TUISeatLockParams lockParams)

Future<TUIValueCallBack<List<TUISeatInfo>>> getSeatList()

TUIRequest takeSeat(int seatIndex, 
                    int timeout, 
                    TUIRequestCallback? requestCallback)    

Future<TUIActionCallback> leaveSeat()

TUIRequest takeUserOnSeatByAdmin(int seatIndex, 
                                 String userId, 
                                 int timeout,    
                                 TUIRequestCallback? requestCallback)

Future<TUIActionCallback> kickUserOffSeatByAdmin(int seatIndex, 
                                         String userId)

Future<TUIActionCallback> sendTextMessage(String message)

Future<TUIActionCallback> sendCustomMessage(String message)

Future<TUIActionCallback> disableSendingMessageByAdmin(String userId, 
                                               bool isDisable)

Future<TUIActionCallback> disableSendingMessageForAllUser(bool isDisable)

Future<TUIActionCallback> cancelRequest(String requestId)

Future<TUIActionCallback> responseRemoteRequest(String requestId, 
                                        bool agree)

void callExperimentalAPI(String jsonStr);

Future<int?> switchCamera(bool isFrontCamera);

void setBeautyLevel(int beautyStyle, int beautyLevel);

void setWhitenessLevel(int whitenessLevel);