/**
 * Starts the show info polling interval. Should be called on server startup.
 */
export declare function startShowInfoPolling(): void;
/**
 * Stops the show info polling interval. Should be called on server shutdown.
 */
export declare function stopShowInfoPolling(): void;
/**
 * Triggers an immediate show name update. Uses debouncing to prevent excessive API calls when multiple streams start in quick succession. The update runs after a
 * short delay, collapsing multiple triggers into a single poll.
 */
export declare function triggerShowNameUpdate(): void;
/**
 * Gets the cached show name for a stream.
 * @param streamId - The stream ID to look up.
 * @returns The show name if known, empty string otherwise.
 */
export declare function getShowName(streamId: number): string;
/**
 * Clears the cached show name for a stream. Should be called when a stream terminates.
 * @param streamId - The stream ID to clear.
 */
export declare function clearShowName(streamId: number): void;
/**
 * Gets the cached logo URL for a channel.
 * @param channelKey - The channel key to look up (e.g., "cnn").
 * @returns The logo URL if known, undefined otherwise.
 */
export declare function getChannelLogo(channelKey: string): string | undefined;