import { Talk } from '../types/voice';
import { VoiceEngine } from './VoiceEngine';
/**
 * Aivis Cloud API voice synthesis engine
 */
export declare class AivisCloudEngine implements VoiceEngine {
    private modelUuid?;
    private speakerUuid?;
    private styleId?;
    private styleName?;
    private userDictionaryUuid?;
    private language;
    private useSSML;
    private speakingRate;
    private emotionalIntensity;
    private tempoDynamics;
    private pitch;
    private volume;
    private leadingSilence;
    private trailingSilence;
    private lineBreakSilence;
    private outputFormat;
    private outputBitrate?;
    private outputSamplingRate;
    private outputChannels;
    private enableBillingLogs;
    /**
     * Set model UUID
     * @param modelUuid Aivis Cloud model UUID
     */
    setModelUuid(modelUuid: string): void;
    /**
     * Set speaker UUID
     * @param speakerUuid Aivis Cloud speaker UUID
     */
    setSpeakerUuid(speakerUuid: string): void;
    /**
     * Set style ID
     * @param styleId Style ID (0-31)
     */
    setStyleId(styleId: number): void;
    /**
     * Set style name
     * @param styleName Style name
     */
    setStyleName(styleName: string): void;
    /**
     * Set user dictionary UUID
     * @param userDictionaryUuid User dictionary UUID
     */
    setUserDictionaryUuid(userDictionaryUuid?: string): void;
    /**
     * Set synthesis language (BCP 47)
     * @param language Language tag (currently only 'ja' supported)
     */
    setLanguage(language?: string): void;
    /**
     * Set SSML usage
     * @param useSSML Enable SSML interpretation
     */
    setUseSSML(useSSML: boolean): void;
    /**
     * Set speaking rate
     * @param rate Speaking rate (0.5-2.0)
     */
    setSpeakingRate(rate: number): void;
    /**
     * Set emotional intensity
     * @param intensity Emotional intensity (0.0-2.0)
     */
    setEmotionalIntensity(intensity: number): void;
    /**
     * Set tempo dynamics
     * @param dynamics Tempo dynamics (0.0-2.0)
     */
    setTempoDynamics(dynamics: number): void;
    /**
     * Set pitch
     * @param pitch Pitch (-1.0-1.0)
     */
    setPitch(pitch: number): void;
    /**
     * Set volume
     * @param volume Volume (0.0-2.0)
     */
    setVolume(volume: number): void;
    /**
     * Set silence durations
     * @param leading Leading silence in seconds
     * @param trailing Trailing silence in seconds
     * @param lineBreak Line break silence in seconds
     */
    setSilenceDurations(leading: number, trailing: number, lineBreak: number): void;
    /**
     * Set output format
     * @param format Output format
     */
    setOutputFormat(format: 'wav' | 'flac' | 'mp3' | 'aac' | 'opus'): void;
    /**
     * Set output bitrate
     * @param bitrate Output bitrate in kbps (8-320)
     */
    setOutputBitrate(bitrate: number): void;
    /**
     * Set output sampling rate
     * @param rate Output sampling rate in Hz
     */
    setOutputSamplingRate(rate: 8000 | 11025 | 12000 | 16000 | 22050 | 24000 | 44100 | 48000): void;
    /**
     * Set output channels
     * @param channels Output channels (mono or stereo)
     */
    setOutputChannels(channels: 'mono' | 'stereo'): void;
    /**
     * Enable or disable billing/usage information logs
     * @param enable Whether to enable billing logs (default: false)
     */
    setEnableBillingLogs(enable: boolean): void;
    fetchAudio(input: Talk, speaker: string, apiKey?: string): Promise<ArrayBuffer>;
    /**
     * Get emotion settings based on emotion type
     * @param emotion Emotion type
     * @returns Emotion settings with adjusted emotional intensity
     */
    private getEmotionSettings;
    getTestMessage(textVoiceText?: string): string;
}