import { ModelEngine, ModelConfig, ModelInstanceRequest, ChatCompletionTaskResult, TextCompletionTaskResult, ChatCompletionTaskArgs, TextCompletionTaskArgs, EmbeddingTaskArgs, ImageToTextTaskArgs, ImageToImageTaskArgs, SpeechToTextTaskArgs, TextToSpeechTaskArgs, TextToImageTaskArgs, ObjectDetectionTaskArgs, TextClassificationTaskArgs, EmbeddingTaskResult, InferenceTask, ImageToTextTaskResult, ImageToImageTaskResult, SpeechToTextTaskResult, TextToSpeechTaskResult, TextToImageTaskResult, TextClassificationTaskResult, ObjectDetectionTaskResult } from './types/index.js';
import { Logger } from './lib/logger.js';
type ModelInstanceStatus = 'idle' | 'busy' | 'error' | 'loading' | 'preparing';
interface ModelInstanceOptions extends ModelConfig {
    log?: Logger;
    gpu: boolean;
}
export declare class ModelInstance<TEngineRef = unknown> {
    id: string;
    status: ModelInstanceStatus;
    modelId: string;
    config: ModelConfig;
    fingerprint: string;
    createdAt: Date;
    lastUsed: number;
    gpu: boolean;
    ttl: number;
    log: Logger;
    private engine;
    private engineRef?;
    private contextIdentity?;
    private needsContextReset;
    private currentRequest?;
    private shutdownController;
    constructor(engine: ModelEngine, { log, gpu, ...options }: ModelInstanceOptions);
    private generateInstanceId;
    private generateTaskId;
    getEngineRef(): unknown;
    load(signal?: AbortSignal): Promise<void>;
    dispose(): Promise<void>;
    lock(request: ModelInstanceRequest): void;
    unlock(): void;
    resetContext(): void;
    getContextStateIdentity(): string | undefined;
    hasContextState(): boolean;
    matchesContextState(request: ModelInstanceRequest): boolean;
    matchesRequirements(request: ModelInstanceRequest): boolean;
    private createTaskController;
    processChatCompletionTask(args: ChatCompletionTaskArgs): {
        id: string;
        model: string;
        createdAt: Date;
        result: Promise<ChatCompletionTaskResult>;
        cancel: () => void;
    };
    processTextCompletionTask(args: TextCompletionTaskArgs): {
        id: string;
        model: string;
        createdAt: Date;
        cancel: () => void;
        result: Promise<TextCompletionTaskResult>;
    };
    private processTask;
    processEmbeddingTask(args: EmbeddingTaskArgs): InferenceTask<EmbeddingTaskResult>;
    processImageToTextTask(args: ImageToTextTaskArgs): InferenceTask<ImageToTextTaskResult>;
    processImageToImageTask(args: ImageToImageTaskArgs): InferenceTask<ImageToImageTaskResult>;
    processSpeechToTextTask(args: SpeechToTextTaskArgs): InferenceTask<SpeechToTextTaskResult>;
    processTextToSpeechTask(args: TextToSpeechTaskArgs): InferenceTask<TextToSpeechTaskResult>;
    processTextToImageTask(args: TextToImageTaskArgs): InferenceTask<TextToImageTaskResult>;
    processTextClassificationTask(args: TextClassificationTaskArgs): InferenceTask<TextClassificationTaskResult>;
    processObjectDetectionTask(args: ObjectDetectionTaskArgs): InferenceTask<ObjectDetectionTaskResult>;
}
export {};