import type { AudioTrack } from "../types";
import { type PCMFrame } from "./SoftwareAudioDecoder";
import { WasmBindings } from "../wasm/bindings";
export declare class MoviAudioDecoder {
    private decoder;
    private swDecoder;
    private bindings;
    private useSoftware;
    private pendingData;
    private pendingPCM;
    private pendingChunks;
    private isConfigured;
    private onData;
    private onPCM;
    private onError;
    private currentTrack;
    private hasTriedSoftwareFallback;
    private hasDescription;
    private _downmix;
    constructor();
    setDownmix(downmix: boolean): void;
    setBindings(bindings: WasmBindings): void;
    /** True when audio runs through the WASM software decoder (TrueHD/DTS/AC-3/
     *  Opus/FLAC/…) rather than WebCodecs. The software path decodes sub-realtime
     *  on a cold start, so callers can gate cold-start mitigations on this. */
    get usesSoftware(): boolean;
    /**
     * Configure the decoder for a specific track
     */
    configure(track: AudioTrack, extradata?: Uint8Array): Promise<boolean>;
    private needsSoftwareDecoding;
    private initSoftwareDecoder;
    /**
     * Map FFmpeg codec names to WebCodecs codec strings
     */
    private mapCodecToWebCodecs;
    /**
     * Decode an encoded audio chunk
     */
    decode(data: Uint8Array, timestamp: number, keyframe: boolean): void;
    /**
     * Set data output callback
     */
    setOnData(callback: (data: AudioData) => void): void;
    /**
     * Set PCM frame output callback (used by the software decoder path).
     */
    setOnPCM(callback: (frame: PCMFrame) => void): void;
    /**
     * Set error callback
     */
    setOnError(callback: (error: Error) => void): void;
    /**
     * Flush the decoder
     */
    flush(): Promise<void>;
    /**
     * Reset the decoder
     */
    reset(): void;
    /**
     * Close the decoder
     */
    close(): void;
    /**
     * Check if decoder is configured
     */
    get configured(): boolean;
    /**
     * Get queue size
     */
    get queueSize(): number;
    /**
     * Get decoder stats for nerd stats overlay
     */
    getStats(): {
        decoderType: string;
        queueSize: number;
    };
    /**
     * Strip ADTS header from AAC packet data if present.
     * ADTS header is 7 bytes (without CRC) or 9 bytes (with CRC).
     * Sync word: 0xFFF (12 bits).
     */
    private static stripAdtsHeader;
}
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