/*!
 * Copyright (c) 2025-present, Vanilagy and contributors
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at https://mozilla.org/MPL/2.0/.
 */
import { AVCodecID } from 'node-av';
/**
 * Encodes audio frames into encoded chunks.
 *
 * Corresponds to the WebCodecs AudioEncoder API.
 */
export declare class AudioEncoderPolyfill extends EventTarget {
    private init;
    private config;
    private codecContext;
    private mutex;
    private frame;
    private packet;
    private _encodeQueueSize;
    private currentConfigId;
    private chunkOutputted;
    private chunkTimestampOffset;
    private pendingFlushResolvers;
    private resampler;
    private lastResamplerKey;
    private dstFrame;
    private nextPts;
    private aacAudioSpecificConfig;
    private resampledSampleCount;
    private _state;
    /**
     * The current state of the encoder: "unconfigured", "configured", or "closed".
     */
    get state(): CodecState;
    /**
     * The number of pending encode operations.
     */
    get encodeQueueSize(): number;
    /**
     * Event handler called when an encode operation completes and leaves the queue.
     */
    ondequeue: ((this: AudioEncoder, ev: Event) => unknown) | null;
    /**
     * Creates a new AudioEncoder.
     */
    constructor(init: AudioEncoderInit);
    private static createCodecContext;
    /**
     * Checks if the encoder can support the given configuration.
     */
    static isConfigSupported(config: AudioEncoderConfig): Promise<AudioEncoderSupport>;
    /**
     * Configures the encoder with the given configuration.
     */
    configure(config: AudioEncoderConfig): void;
    private configureInternal;
    /**
     * Queues audio data to be encoded.
     */
    encode(data: AudioData): void;
    private outputChunk;
    private decrementQueue;
    private encodeInternal;
    private getBytesPerSample;
    private formatIsPlanar;
    private createOutputBuffers;
    private createInputSilenceBuffers;
    private sendFrameAndReceivePackets;
    private pullResampledFrames;
    /**
     * Flushes all pending encode operations and waits for completion.
     */
    flush(): Promise<void>;
    private flushInternal;
    /**
     * Closes the encoder and releases all resources.
     */
    close(): void;
    /**
     * Resets the encoder to an unconfigured state.
     */
    reset(): void;
    private handleAsyncError;
}
export declare const getDecentAudioBitrate: (codec: AVCodecID) => number;