import AbstractFifoSamplePipe from './AbstractFifoSamplePipe.js';
/**
 * Time-stretch processor for tempo adjustment without affecting pitch.
 * Used internally by SoundTouch for time-stretching audio.
 */
export default class Stretch extends AbstractFifoSamplePipe {
    private _quickSeek;
    private midBufferDirty;
    midBuffer: Float32Array | null;
    private refMidBuffer;
    overlapLength: number;
    private autoSeqSetting;
    private autoSeekSetting;
    _tempo: number;
    private sampleRate;
    private overlapMs;
    sequenceMs: number;
    seekWindowMs: number;
    private seekWindowLength;
    private seekLength;
    private nominalSkip;
    private skipFract;
    sampleReq: number;
    /**
     * Creates a Stretch instance.
     * @param createBuffers - Whether to allocate internal buffers
     */
    constructor(createBuffers?: boolean);
    clear(): void;
    clearMidBuffer(): void;
    setParameters(sampleRate: number, sequenceMs: number, seekWindowMs: number, overlapMs: number): void;
    set tempo(newTempo: number);
    get tempo(): number;
    get inputChunkSize(): number;
    get outputChunkSize(): number;
    calculateOverlapLength(overlapInMsec?: number): void;
    private checkLimits;
    private calculateSequenceParameters;
    set quickSeek(enable: boolean);
    clone(): Stretch;
    seekBestOverlapPosition(): number;
    private seekBestOverlapPositionStereo;
    private seekBestOverlapPositionStereoQuick;
    private preCalculateCorrelationReferenceStereo;
    private calculateCrossCorrelationStereo;
    private overlap;
    private overlapStereo;
    process(): void;
}
//# sourceMappingURL=Stretch.d.ts.map