import { MixerStore } from './state/mixer-store';
import { ChannelType, FxType, VolumeBusType } from './types';
/** Clamp numeric value to min and max */
export declare function clamp(value: number, min: number, max: number): number;
/** Round a number to three decimal places */
export declare function roundToThreeDecimals(value: number): number;
/**
 * Transform player time in seconds to human-readable format M:SS
 * @param value player time in seconds
 */
export declare function playerTimeToString(value: number): string;
/**
 * Get the number of the channel that is stereo-linked to the given channel.
 * Returns `undefined` when the channel is not linked (stereo index `-1`),
 * so callers can skip adding a linked channel in that case.
 * @param channel Channel number
 * @param stereoIndex Stereo index of the channel (`0` = first, `1` = second, `-1` = not linked)
 */
export declare function getLinkedChannelNumber(channel: number, stereoIndex: number): number | undefined;
/** Helper function to convert FX type into readable name (Reverb, Chorus, ...) */
export declare function fxTypeToString(type: FxType): keyof typeof FxType;
/**
 * Sanitize a channel name before sending it to the mixer:
 * removes the reserved `^` separator, limits the length to 20 characters
 * and converts the name to uppercase.
 * @param name raw channel name
 */
export declare function sanitizeChannelName(name: string): string;
/**
 * Construct the default human-readable name for a channel,
 * based on the default labels from the web interface
 * @param type channel type
 * @param channel channel number
 */
export declare function getDefaultChannelName(type: ChannelType, channel: number): string;
/**
 * Construct the default human-readable name for a matrix bus output (Ui24R only).
 * A matrix lives in the same `a` slot as the AUX it replaced, but uses a different
 * default label.
 * @param channel matrix bus number
 */
export declare function getDefaultMatrixName(channel: number): string;
/**
 * Construct the default human-readable name for a volume bus (solo or headphones),
 * based on the default labels from the web interface
 * @param type volume bus type
 * @param busId volume bus number
 */
export declare function getDefaultVolumeBusName(type: VolumeBusType, busId: number): string;
/**
 * Returns a Promise that fires when the mixer state hasn't changed for 25 ms OR when 250 ms timeout are over.
 * This makes sure that all initial params can be received by the mixer after connection init.
 * In case the state never stands still for 50 ms, the 250 ms timeout will emit finally.
 */
export declare function waitForInitParams(store: MixerStore): Promise<void>;