export type ArrangementNote = {
    midi: number;
    time: number;
    duration: number;
};
export type ArrangementNoteRect = {
    x: number;
    y: number;
    width: number;
    height: number;
};
export declare function getArrangementCanvasHeight(trackCount: number, trackHeight: number, headerHeight: number, viewportHeight: number): number;
export declare function getPianoRollCanvasHeight(pitchCount: number, rowHeight: number, headerHeight: number, viewportHeight: number): number;
export declare function getArrangementNoteRect(note: ArrangementNote, minPitch: number, maxPitch: number, trackIndex: number, trackHeight: number, headerHeight: number, width: number, viewStart: number, viewEnd: number): ArrangementNoteRect;
/** Place audio rows before the specified MIDI track (1-based); default above MIDI. */
export declare function getArrangementTrackOrder(midiCount: number, audioBefore: readonly (number | undefined)[]): {
    kind: "audio" | "midi";
    index: number;
}[];