/** Runtime-only sprite sheet playback configuration. */
export interface SpriteSheetConfig {
    frameCount: number;
    frameWidth: number;
    frameHeight: number;
    sheetWidth?: number;
    sheetHeight?: number;
    fps: number;
    loop: boolean;
    autoPlay?: boolean;
}
export interface SpriteSheetFrame {
    index: number;
    column: number;
    row: number;
    x: number;
    y: number;
    width: number;
    height: number;
}
export interface SpriteSheetSink {
    applyFrame(frame: Readonly<SpriteSheetFrame>): void;
}
export interface SpriteSheetPlaybackState {
    playing: boolean;
    frame: number;
    progress: number;
    fps: number;
    loop: boolean;
}
export interface AnimationFrameScheduler {
    now(): number;
    request(callback: (time: number) => void): number;
    cancel(handle: number): void;
}
/** Renderer-neutral sprite timing and crop calculation. */
export declare class SpriteSheetController {
    #private;
    readonly sink: SpriteSheetSink;
    readonly scheduler: AnimationFrameScheduler;
    constructor(sink: SpriteSheetSink, config: SpriteSheetConfig, scheduler?: AnimationFrameScheduler);
    get state(): SpriteSheetPlaybackState;
    subscribe(listener: (state: SpriteSheetPlaybackState) => void): () => void;
    play(): void;
    pause(): void;
    stop(): void;
    goToFrame(frame: number): void;
    seek(progress: number): void;
    updateConfig(update: Partial<SpriteSheetConfig>): void;
    dispose(): void;
}
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