/**
 * AudioGraph.ts
 *
 * Node-based audio processing graph: connections, parameter
 * automation, processing order, and mix routing.
 *
 * @module audio
 */
export type AudioNodeType = 'source' | 'gain' | 'filter' | 'delay' | 'reverb' | 'compressor' | 'output' | 'mixer';
export interface AudioGraphNode {
    id: string;
    type: AudioNodeType;
    params: Map<string, number>;
    inputs: string[];
    outputs: string[];
    bypassed: boolean;
}
export interface AudioConnection {
    id: string;
    sourceId: string;
    targetId: string;
    sourcePort: number;
    targetPort: number;
}
export interface AutomationPoint {
    time: number;
    value: number;
    curve: 'linear' | 'exponential' | 'step';
}
export interface ParameterAutomation {
    nodeId: string;
    paramName: string;
    points: AutomationPoint[];
}
export declare class AudioGraph {
    private nodes;
    private connections;
    private automations;
    private processingOrder;
    private dirty;
    addNode(type: AudioNodeType, params?: Record<string, number>): AudioGraphNode;
    removeNode(id: string): boolean;
    connect(sourceId: string, targetId: string, sourcePort?: number, targetPort?: number): string | null;
    disconnect(connId: string): boolean;
    automate(nodeId: string, paramName: string, points: AutomationPoint[]): void;
    applyAutomation(time: number): void;
    private evaluateAutomation;
    getProcessingOrder(): string[];
    setParam(nodeId: string, param: string, value: number): void;
    getParam(nodeId: string, param: string): number | undefined;
    bypass(nodeId: string, bypassed: boolean): void;
    getNode(id: string): AudioGraphNode | undefined;
    getNodeCount(): number;
    getConnectionCount(): number;
}
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