import type { RemoteAudioTrack } from "livekit-client";
import type { FormatConfig } from "./utils/BaseConnection.js";
import type { VolumeProvider } from "./utils/volumeProvider.js";
/**
 * Result of setting up volume analysis (input or output).
 */
export type AnalysisResult = {
    volumeProvider: VolumeProvider;
    /** AnalyserNode on web; undefined on other platforms. */
    analyser?: unknown;
};
/**
 * Abstracts platform-specific audio behaviour used by WebRTCConnection.
 *
 * - **Web:** AudioContext, HTMLAudioElement, AudioWorkletNode
 * - **React Native:** no-op (LiveKit handles playback natively;
 *   volume comes from `setInputVolumeProvider`/`setOutputVolumeProvider`)
 * - **Default (no adapter):** NO_VOLUME, no playback setup
 */
export interface WebRTCAudioAdapter {
    /**
     * Attach a remote audio track for playback.
     * Web: creates HTMLAudioElement via `track.attach()` and appends to DOM.
     */
    attachRemoteTrack(track: RemoteAudioTrack, outputDeviceId: string | null): Promise<void>;
    /**
     * Set up input volume analysis from the local mic MediaStreamTrack.
     * Called once after mic is enabled and again after input device switches.
     * Implementations must clean up previous resources on re-call.
     */
    setupInputAnalysis(mediaStreamTrack: MediaStreamTrack): AnalysisResult;
    /**
     * Set up output volume analysis and raw audio capture from a remote track.
     * @param onAudioData Called with captured audio data for the `onAudio` callback.
     */
    setupOutputAnalysis(track: RemoteAudioTrack, format: FormatConfig, onAudioData: (audioData: ArrayBuffer, maxVolume: number) => void): Promise<AnalysisResult>;
    /** Set playback volume (0-1) for all managed audio elements. */
    setVolume(volume: number): void;
    /** Route audio output to the specified device. */
    setOutputDevice(deviceId: string): Promise<void>;
    /** Release all resources (AudioContexts, audio elements, etc.). */
    cleanup(): void;
}
/**
 * Register a factory that creates a {@link WebRTCAudioAdapter} for each
 * new WebRTC connection. Called by platform-specific entrypoints
 * (e.g. `platform/web/index.ts`).
 */
export declare function setWebRTCAudioAdapterFactory(factory: () => WebRTCAudioAdapter): void;
/** @internal Create an adapter using the registered factory, or null. */
export declare function createAudioAdapter(): WebRTCAudioAdapter | null;
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