/**
 * Multimodal signals for emotion inference
 */
export interface EmotionSignals {
    /** Head stability (1.0 = stable, 0.0 = high jitter/shaking) */
    headStability: number;
    /** Dominant hand stability (1.0 = stable, 0.0 = tremors/jitter) */
    handStability: number;
    /** Interaction intensity (e.g., clicks per second, force of movement) */
    interactionIntensity: number;
    /** Task failure rate or repeated interaction patterns */
    behavioralStressing: number;
    /** Optional audio-derived stress (from VoiceSynthesizer/SpeechRecognizer) */
    voiceStress?: number;
}
/**
 * Result of emotion inference
 */
export interface EmotionInference {
    /** Frustration level (0.0 to 1.0) */
    frustration: number;
    /** Confusion/Uncertainty level (0.0 to 1.0) */
    confusion: number;
    /** User engagement/Focus level (0.0 to 1.0) */
    engagement: number;
    /** Predicted primary affective state */
    primaryState: 'neutral' | 'happy' | 'angry' | 'sad' | 'scared' | 'confused' | 'frustrated';
}
/**
 * Emotion detector configuration
 */
export interface EmotionConfig {
    /** Mode of detection (e.g., 'passive', 'active', 'calibrated') */
    mode: string;
    /** Model identifier or path */
    modelId?: string;
    /** Sensitivity adjustment (0.0 to 1.0) */
    sensitivity?: number;
}
/**
 * EmotionDetector @builtin Interface
 */
export interface EmotionDetector {
    /** Initialize the detector with config */
    initialize(config: EmotionConfig): Promise<void>;
    /**
     * Infer emotional state from multimodal signals.
     * This is typically called at a lower frequency than the main loop (e.g., 5Hz).
     */
    infer(signals: EmotionSignals): EmotionInference;
    /** Dispose resources */
    dispose(): void;
}
/**
 * Global registry for builtin EmotionDetectors
 */
export declare const emotionDetectorRegistry: Map<string, EmotionDetector>;
/**
 * Register an emotion detector implementation
 */
export declare function registerEmotionDetector(name: string, detector: EmotionDetector): void;
/**
 * Get a registered emotion detector
 */
export declare function getEmotionDetector(name: string): EmotionDetector | undefined;
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