/*!
 * 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 { AVPixelFormat, AVCodecID, Codec, HardwareContext, AVSampleFormat } from 'node-av';
export declare function assert(x: unknown): asserts x;
export declare const inferCodecFromCodecString: (codecString: string) => AVCodecID | null;
export declare const getChannelLayout: (numChannels: number) => import("node-av").ChannelLayout;
export declare const mapColorPrimaries: (primaries: string) => import("node-av").AVColorPrimaries | null;
export declare const unmapColorPrimaries: (primaries: number) => "bt709" | "bt470bg" | "smpte170m" | "bt2020" | "smpte432" | null;
export declare const mapTransferCharacteristics: (transfer: string) => import("node-av").AVColorTransferCharacteristic | null;
export declare const unmapTransferCharacteristics: (transfer: number) => "bt709" | "smpte170m" | "iec61966-2-1" | "linear" | "pq" | "hlg" | null;
export declare const mapMatrixCoefficients: (matrix: string) => import("node-av").AVColorSpace | null;
export declare const unmapMatrixCoefficients: (matrix: number) => "bt709" | "bt470bg" | "smpte170m" | "rgb" | "bt2020-ncl" | null;
export declare const toPixelFormat: (ffmpegPixelFormat: AVPixelFormat) => "I420" | "I420P10" | "I420P12" | "I420A" | "I420AP10" | "I422" | "I422P10" | "I422P12" | "I422A" | "I422AP10" | "I422AP12" | "I444" | "I444P10" | "I444P12" | "I444A" | "I444AP10" | "I444AP12" | "NV12" | "RGBA" | "RGBX" | "BGRA" | "BGRX" | null;
export declare const fromPixelFormat: (pixelFormat: string) => AVPixelFormat;
export declare const toAudioSampleFormat: (ffmpegSampleFormat: AVSampleFormat) => AudioSampleFormat | null;
export declare const fromAudioSampleFormat: (sampleFormat: AudioSampleFormat) => AVSampleFormat;
export declare const toUint8Array: (source: AllowSharedBufferSource) => Uint8Array;
export declare const toDataView: (source: AllowSharedBufferSource) => DataView;
export declare const promiseWithResolvers: <T = void>() => {
    promise: Promise<T>;
    resolve: (value: T) => void;
    reject: (reason: unknown) => void;
};
export interface AsyncMutexLock extends Disposable {
    readonly pending: boolean;
    readonly ready: Promise<void> | null;
    release(): void;
}
export declare class AsyncMutex {
    private locked;
    private resolverQueue;
    lock(): AsyncMutexLock;
    private createLock;
    private dispatch;
}
export declare class Bitstream {
    bytes: Uint8Array;
    /** Current offset in bits. */
    pos: number;
    constructor(bytes: Uint8Array);
    seekToByte(byteOffset: number): void;
    private readBit;
    readBits(n: number): number;
    writeBits(n: number, value: number): void;
    readAlignedByte(): number;
    skipBits(n: number): void;
    getBitsLeft(): number;
    clone(): Bitstream;
}
/** Reads an exponential-Golomb universal code from a Bitstream.  */
export declare const readExpGolomb: (bitstream: Bitstream) => number;
/** Reads a signed exponential-Golomb universal code from a Bitstream. */
export declare const readSignedExpGolomb: (bitstream: Bitstream) => number;
export declare const bytesToHexString: (bytes: Uint8Array) => string;
export declare const reverseBitsU32: (x: number) => number;
export declare const getHardwareContext: () => HardwareContext | null;
export declare const getHardwareEncoderCodec: (codecId: AVCodecID) => Codec | null;
export declare const getHardwareDecoderCodec: (codecId: AVCodecID) => Codec | null;
export declare const clamp: (value: number, min: number, max: number) => number;