import type { Errors } from '../native/ZoomVideoSdk';
export declare enum VideoPreferenceMode {
    Balance = "ZoomVideoSDKVideoPreferenceMode_Balance",
    Sharpness = "ZoomVideoSDKVideoPreferenceMode_Sharpness",
    Smoothness = "ZoomVideoSDKVideoPreferenceMode_Smoothness",
    Custom = "ZoomVideoSDKVideoPreferenceMode_Custom"
}
export declare type VideoPreferenceSetting = {
    mode?: VideoPreferenceMode;
    maximumFrameRate?: number;
    minimumFrameRate?: number;
};
export declare type ZoomVideoSdkCameraDeviceType = {
    deviceId: string;
    deviceName: string;
    isSelectedDevice: boolean;
};
/**
 * An interface to control video and manage cameras during a video session.
 */
export declare type ZoomVideoSdkVideoHelperType = {
    /**
     * Call this method to start sending local video data from the camera.
     */
    startVideo: () => Promise<Errors>;
    /**
     * Call this method to stop sending local video data from the camera.
     */
    stopVideo: () => Promise<Errors>;
    /**
     * Switch to the next available camera.
     */
    switchCamera: (deviceId?: string) => Promise<boolean>;
    /**
     * Call this method to rotate the video when the device is rotated.
     */
    rotateMyVideo: (rotation: number) => Promise<boolean>;
    /**
     * Get the list of camera devices.
     */
    getCameraList: () => Promise<ZoomVideoSdkCameraDeviceType[]>;
    /**
     * Get the number of cameras available to share the video.
     */
    getNumberOfCameras: () => Promise<number>;
    /**
     * Determine whether current aspect ratio is the original aspect ratio of video.
     */
    isOriginalAspectRatioEnabled: () => Promise<boolean>;
    /**
     * This function is used to set the aspect ratio of the video sent out.
     */
    enableOriginalAspectRatio: (enable: boolean) => Promise<boolean>;
    /**
     * Determine whether my video is mirrored.
     */
    isMyVideoMirrored: () => Promise<boolean>;
    /**
     * Call this method to mirror my video.
     */
    mirrorMyVideo: (enable: boolean) => Promise<Errors>;
    /**
     * Turn on or off the flashlight (Only support Android platform).
     */
    turnOnOrOffFlashlight: (enable: boolean) => Promise<boolean>;
    /**
     * Return true if support to control the flashlight (Only support Android platform).
     */
    isSupportFlashlight: () => Promise<boolean>;
    /**
     * Return true if the flashlight is on. Otherwise, it'll return false (Only support Android platform).
     */
    isFlashlightOn: () => Promise<boolean>;
};
export declare class ZoomVideoSdkVideoHelper implements ZoomVideoSdkVideoHelperType {
    startVideo(): Promise<any>;
    stopVideo(): Promise<any>;
    switchCamera(deviceId?: string): Promise<any>;
    rotateMyVideo(rotation: number): Promise<any>;
    getCameraList(): Promise<ZoomVideoSdkCameraDeviceType[]>;
    getNumberOfCameras(): Promise<any>;
    isOriginalAspectRatioEnabled(): Promise<any>;
    enableOriginalAspectRatio(enable: boolean): Promise<any>;
    isMyVideoMirrored(): Promise<any>;
    mirrorMyVideo(enable: boolean): Promise<any>;
    /**
     * Turn on or off the flashlight (Only support Android platform).
     * @param {boolean} enable - True means to turn it on. False is to turn it off.
     */
    turnOnOrOffFlashlight(enable: boolean): Promise<any>;
    /**
     * Return true if support to control the flashlight (Only support Android platform).
     */
    isSupportFlashlight(): Promise<any>;
    /**
     * Return true if the flashlight is on. Otherwise, it'll return false (Only support Android platform).
     */
    isFlashlightOn(): Promise<any>;
}