import { AdvancedCameraState, CameraExposureMode, CameraFocusMode, CameraState, CameraStateChangeCallback, CaptureFrameOptions, ErrorCallback, VideoConfiguration } from '../../types';
import { ConfigurationService } from '../../configuration';
import { MediaStreamService } from '../media-stream.service';

export declare class CameraController {
    private configService;
    private mediaStreamService;
    private stateCallbacks;
    private errorCallbacks;
    private isSwitchingDevice;
    private previewTrack;
    private unsubscribes;
    private captureVideoEl;
    constructor(configService: ConfigurationService, mediaStreamService: MediaStreamService);
    private setupEventListeners;
    destroy(): void;
    updateResolution: (width: number, height: number) => void;
    updateFrameRate: (frameRate: number) => void;
    updateDevice: (deviceId: string) => Promise<void>;
    updateConstraints: (constraints: MediaTrackConstraints) => void;
    private restart;
    enable: (deviceId?: string) => Promise<void>;
    disable: () => void;
    toggle: () => Promise<void>;
    switchDevice: (deviceId: string) => Promise<void>;
    toggleFacing: () => Promise<void>;
    preview: (deviceId?: string) => Promise<MediaStreamTrack>;
    publishPreview: () => Promise<void>;
    stopPreview: () => void;
    reset: () => Promise<void>;
    onTrackReplaced: (callback: (event: {
        oldTrack: MediaStreamTrack;
        newTrack: MediaStreamTrack;
        source?: "device" | "background";
    }) => void) => VoidFunction;
    getConfiguration: () => VideoConfiguration;
    onStateChange: (callback: CameraStateChangeCallback) => VoidFunction;
    onError: (callback: ErrorCallback) => VoidFunction;
    private _notifyStateChange;
    private _notifyError;
    getStream(): MediaStream | null;
    getTrack(): MediaStreamTrack | null;
    private getRawTrack;
    captureFrame: (options?: CaptureFrameOptions) => Promise<Blob>;
    captureFrameDataURL: (options?: CaptureFrameOptions) => Promise<string>;
    captureFrameToCanvas: (canvas?: HTMLCanvasElement) => HTMLCanvasElement;
    private drawCurrentFrame;
    private acquireFrameSource;
    private boundCaptureTrack;
    private ensureCaptureVideo;
    private drawSourceToCanvas;
    private scaleDimensions;
    private releaseCaptureVideo;
    getCapabilities: () => MediaTrackCapabilities | null;
    setZoom: (value: number) => Promise<void>;
    toggleTorch: (on?: boolean) => Promise<void>;
    setFocusMode: (mode: CameraFocusMode) => Promise<void>;
    setExposureMode: (mode: CameraExposureMode) => Promise<void>;
    getAdvancedState: () => AdvancedCameraState;
    private torchSupported;
    private applyAdvancedConstraint;
    private failAdvanced;
    get state(): CameraState;
}