import { SpessaSynthWrapper } from '../utils/SpessaSynthWrapper';
import { SequencerTimingHelper } from '../utils/SequencerTimingHelper';
import { SeekOptimizer } from '../utils/PreloadCache';
export declare class MIDIPlayer {
    audioContext: AudioContext | null;
    player: any;
    seekOptimizer: SeekOptimizer | null;
    spessaPlayer: SpessaSynthWrapper | null;
    useSpessaSynth: boolean;
    timingHelper: SequencerTimingHelper | null;
    songStart: number;
    input: any;
    currentSongTime: number;
    nextStepTime: number;
    nextPositionTime: number;
    loadedsong: any;
    stoppedsong: any;
    stepDuration: number;
    lastPosition: number;
    currentPosition: number;
    duration: number;
    onload: ((song: any) => void) | null;
    ontick: ((song: any, position: number) => void) | null;
    readonly STOPPED = "stopped";
    readonly PLAYING = "playing";
    readonly PAUSED = "paused";
    state: string;
    private tickInterval;
    private readonly TICK_INTERVAL_MS;
    private tempoMultiplier;
    constructor();
    /**
     * Set tempo multiplier (1.0 = normal speed, 0.5 = half speed, 2.0 = double speed)
     */
    setTempoMultiplier(multiplier: number): void;
    /**
     * Get current tempo multiplier
     */
    getTempoMultiplier(): number;
    setSoundfontEngine(engine: string, spessaPlayerInstance: SpessaSynthWrapper): void;
    log(msg: any, extra?: any): void;
    play(): Promise<void>;
    pause(): void;
    stop(): void;
    private stopTicking;
    startPlay(song: any): void;
    private startTicking;
    tick: (song: any) => void;
    sendNotes(song: any, songStart: number, start: number, end: number): void;
    initAudioContext(): void;
    startLoad(song: any): void;
    loadSong(song: any): void;
    openFile(fileObj: ArrayBuffer | Uint8Array): void;
    /**
     * Open file with EMK support
     * Automatically converts EMK to KAR if needed
     *
     * @param fileObj - File, Blob, ArrayBuffer, or Uint8Array
     * @param filename - Optional filename for type detection
     */
    openFileWithEmkSupport(fileObj: File | Blob | ArrayBuffer | Uint8Array, filename?: string): Promise<void>;
    getPosition(): number;
    setPosition(position: number): void;
}