import { AmplitudeRecorderService } from './amplitude-recorder.service';
import { MediaRecorderConfig, MultimediaRecorder } from './media-recorder';
import { NotificationService } from '../notification.service';
import { ChatClientService } from '../chat-client.service';
import { TranscoderService } from './transcoder.service';
import { AudioRecording, MediaRecording } from '../types';
import * as i0 from "@angular/core";
/**
 * The `AudioRecorderService` can record an audio file, the SDK uses this to record a voice message
 */
export declare class AudioRecorderService extends MultimediaRecorder<Omit<AudioRecording, keyof MediaRecording>> {
    private amplitudeRecorder;
    /**
     * Due to browser restrictions the following config is used:
     * - In Safari we record in audio/mp4
     * - For all other browsers we use audio/webm (which is then transcoded to wav)
     */
    config: MediaRecorderConfig;
    constructor(notificationService: NotificationService, chatService: ChatClientService, transcoder: TranscoderService, amplitudeRecorder: AmplitudeRecorderService);
    protected enrichWithExtraData(): {
        waveform_data: number[];
    };
    /**
     * Start audio recording
     */
    start(): Promise<void>;
    /**
     * Pause audio recording, it can be restarted using `resume`
     */
    pause(): void;
    /**
     * Resume a previously paused recording
     */
    resume(): void;
    /**
     * Stop the recording and free up used resources
     * @param options
     * @param options.cancel if this is `true` no recording will be created, but resources will be freed
     * @returns the recording
     */
    stop(options?: {
        cancel: boolean;
    }): Promise<MediaRecording & Omit<AudioRecording, keyof MediaRecording>>;
    static ɵfac: i0.ɵɵFactoryDeclaration<AudioRecorderService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<AudioRecorderService>;
}