import type { AnyStructure } from '../structure';
import type { TrajectoryController, TrajectoryFrame, TrajectoryMetadata } from './index';
import type { TrajectoryRun } from './run';
interface TrajectorySessionInputs {
    run: () => TrajectoryRun | undefined;
    index: () => number;
    set_index: (idx: number) => void;
    fps: () => number;
    set_fps: (fps: number) => void;
    fps_range: () => readonly [number, number];
    should_auto_play: () => boolean;
    on_play?: () => void;
    on_pause?: () => void;
    on_end?: () => void;
    on_loop?: () => void;
    on_step_change?: (idx: number) => void;
    on_frame_error?: (frame_idx: number, error: Error) => void;
}
interface TrajectorySessionOptions {
    cache_max_frames?: number;
    cache_max_atoms?: number;
    scrub_settle_ms?: number;
    prefetch_delay_ms?: number;
}
export declare function create_trajectory_session(inputs: TrajectorySessionInputs, options?: TrajectorySessionOptions): {
    readonly frame_count: number;
    readonly current_frame: TrajectoryFrame | null;
    readonly current_structure: AnyStructure | undefined;
    readonly loading: boolean;
    readonly scrubbing: boolean;
    readonly property_rows: readonly TrajectoryMetadata[];
    readonly properties_complete: boolean;
    readonly cached_frames: number;
    player: {
        readonly is_playing: boolean;
        readonly fps_limits: readonly [number, number];
        fps: number;
        fps_step: number;
        go_to: (index: number) => void;
        play: () => void;
        pause: () => void;
        seek: (index: number) => void;
        previous: () => void;
        next: () => void;
        toggle: () => void;
        handle_keydown: (event: KeyboardEvent) => boolean;
    };
    controller: TrajectoryController;
    scrub: (idx: number) => void;
    commit: (idx?: number | undefined) => void;
    resolve_frame: (frame_idx: number) => Promise<TrajectoryFrame | null>;
    dispose: () => void;
};
export {};