/**
 * @hidden
 *
 * @internal
 * Limited to Microsoft-internal use
 * @module
 */
import { SdkError } from '../public/interfaces';
/**
 * @hidden
 * Data structure to represent patricipant details needed to request control of camera.
 *
 * @internal
 * Limited to Microsoft-internal use
 */
export interface Participant {
    /**
     * @hidden
     * Id of participant.
     *
     * @internal
     * Limited to Microsoft-internal use
     */
    id: string;
    /**
     * @hidden
     * Display name of participant.
     *
     * @internal
     * Limited to Microsoft-internal use
     */
    displayName?: string;
    /**
     * @hidden
     * Active indicates whether the participant's device is actively being controlled.
     *
     * @internal
     * Limited to Microsoft-internal use
     */
    active?: boolean;
}
/**
 * @hidden
 * Enum used to indicate possible camera control commands.
 *
 * @internal
 * Limited to Microsoft-internal use
 */
export declare enum ControlCommand {
    Reset = "Reset",
    ZoomIn = "ZoomIn",
    ZoomOut = "ZoomOut",
    PanLeft = "PanLeft",
    PanRight = "PanRight",
    TiltUp = "TiltUp",
    TiltDown = "TiltDown"
}
/**
 * @hidden
 * Data structure to indicate the current state of the device.
 *
 * @internal
 * Limited to Microsoft-internal use
 */
export interface DeviceState {
    /**
     * @hidden
     * All operation are available to apply.
     *
     * @internal
     * Limited to Microsoft-internal use
     */
    available: boolean;
    /**
     * @hidden
     * Either camera doesnt support to get state or It unable to apply command.
     *
     * @internal
     * Limited to Microsoft-internal use
     */
    error: boolean;
    /**
     * @hidden
     * Reset max out or already applied. Client Disable Reset.
     *
     * @internal
     * Limited to Microsoft-internal use
     */
    reset: boolean;
    /**
     * @hidden
     * ZoomIn maxed out.
     *
     * @internal
     * Limited to Microsoft-internal use
     */
    zoomIn: boolean;
    /**
     * @hidden
     * ZoomOut maxed out.
     *
     * @internal
     * Limited to Microsoft-internal use
     */
    zoomOut: boolean;
    /**
     * @hidden
     * PanLeft reached max left.
     *
     * @internal
     * Limited to Microsoft-internal use
     */
    panLeft: boolean;
    /**
     * @hidden
     * PanRight reached max right.
     *
     * @internal
     * Limited to Microsoft-internal use
     */
    panRight: boolean;
    /**
     * @hidden
     * TiltUp reached top.
     *
     * @internal
     * Limited to Microsoft-internal use
     */
    tiltUp: boolean;
    /**
     * @hidden
     * TiltDown reached bottom.
     *
     * @internal Limited to Microsoft-internal use
     */
    tiltDown: boolean;
}
/**
 * @hidden
 * Enum used to indicate the reason for the error.
 *
 * @internal
 * Limited to Microsoft-internal use
 */
export declare enum ErrorReason {
    CommandResetError = 0,
    CommandZoomInError = 1,
    CommandZoomOutError = 2,
    CommandPanLeftError = 3,
    CommandPanRightError = 4,
    CommandTiltUpError = 5,
    CommandTiltDownError = 6,
    SendDataError = 7
}
/**
 * @hidden
 * Data structure to indicate the status of the current session.
 *
 * @internal
 * Limited to Microsoft-internal use
 */
export interface SessionStatus {
    /**
     * @hidden
     * Whether the far-end user is controlling a  device.
     *
     * @internal
     * Limited to Microsoft-internal use
     */
    inControl: boolean;
    /**
     * @hidden
     * Reason the  control session was terminated.
     *
     * @internal
     * Limited to Microsoft-internal use
     */
    terminatedReason?: SessionTerminatedReason;
}
/**
 * @hidden
 * Enum used to indicate the reason the session was terminated.
 *
 * @internal
 * Limited to Microsoft-internal use
 */
export declare enum SessionTerminatedReason {
    None = 0,
    ControlDenied = 1,
    ControlNoResponse = 2,
    ControlBusy = 3,
    AckTimeout = 4,
    ControlTerminated = 5,
    ControllerTerminated = 6,
    DataChannelError = 7,
    ControllerCancelled = 8,
    ControlDisabled = 9,
    ControlTerminatedToAllowOtherController = 10
}
/**
 * @hidden
 * Fetch a list of the participants with controllable-cameras in a meeting.
 *
 * @param callback - Callback contains 2 parameters, error and participants.
 * error can either contain an error of type SdkError, incase of an error, or null when fetch is successful
 * participants can either contain an array of Participant objects, incase of a successful fetch or null when it fails
 * participants: object that contains an array of participants with controllable-cameras
 *
 * @internal
 * Limited to Microsoft-internal use
 */
export declare function getCapableParticipants(callback: (error: SdkError | null, participants: Participant[] | null) => void): void;
/**
 * @hidden
 * Request control of a participant's camera.
 *
 * @param participant - Participant specifies the participant to send the request for camera control.
 * @param callback - Callback contains 2 parameters, error and requestResponse.
 * error can either contain an error of type SdkError, incase of an error, or null when fetch is successful
 * requestResponse can either contain the true/false value, incase of a successful request or null when it fails
 * requestResponse: True means request was accepted and false means request was denied
 *
 * @internal
 * Limited to Microsoft-internal use
 */
export declare function requestControl(participant: Participant, callback: (error: SdkError | null, requestResponse: boolean | null) => void): void;
/**
 * @hidden
 * Send control command to the participant's camera.
 *
 * @param ControlCommand - ControlCommand specifies the command for controling the camera.
 * @param callback - Callback to invoke when the command response returns.
 *
 * @internal
 * Limited to Microsoft-internal use
 */
export declare function sendControlCommand(ControlCommand: ControlCommand, callback: (error: SdkError | null) => void): void;
/**
 * @hidden
 * Terminate the remote  session
 *
 * @param callback - Callback to invoke when the command response returns.
 *
 * @internal
 * Limited to Microsoft-internal use
 */
export declare function terminateSession(callback: (error: SdkError | null) => void): void;
/**
 * @hidden
 * Registers a handler for change in participants with controllable-cameras.
 * Only one handler can be registered at a time. A subsequent registration replaces an existing registration.
 *
 * @param handler - The handler to invoke when the list of participants with controllable-cameras changes.
 *
 * @internal
 * Limited to Microsoft-internal use
 */
export declare function registerOnCapableParticipantsChangeHandler(handler: (participantChange: Participant[]) => void): void;
/**
 * @hidden
 * Registers a handler for error.
 * Only one handler can be registered at a time. A subsequent registration replaces an existing registration.
 *
 * @param handler - The handler to invoke when there is an error from the camera handler.
 *
 * @internal
 * Limited to Microsoft-internal use
 */
export declare function registerOnErrorHandler(handler: (error: ErrorReason) => void): void;
/**
 * @hidden
 * Registers a handler for device state change.
 * Only one handler can be registered at a time. A subsequent registration replaces an existing registration.
 *
 * @param handler - The handler to invoke when the controlled device changes state.
 *
 * @internal
 * Limited to Microsoft-internal use
 */
export declare function registerOnDeviceStateChangeHandler(handler: (deviceStateChange: DeviceState) => void): void;
/**
 * @hidden
 * Registers a handler for session status change.
 * Only one handler can be registered at a time. A subsequent registration replaces an existing registration.
 *
 * @param handler - The handler to invoke when the current session status changes.
 *
 * @internal
 * Limited to Microsoft-internal use
 */
export declare function registerOnSessionStatusChangeHandler(handler: (sessionStatusChange: SessionStatus) => void): void;
/**
 * @hidden
 *
 * Checks if the remoteCamera capability is supported by the host
 * @returns boolean to represent whether the remoteCamera capability is supported
 *
 * @throws Error if {@linkcode app.initialize} has not successfully completed
 *
 * @internal
 * Limited to Microsoft-internal use
 */
export declare function isSupported(): boolean;