import type { AvifAnimation, AvifDecodeOptions, AvifImageData } from './types';
import type { AvifItemInfo } from './container/avif';
/**
 * Parse everything knowable without entropy-decoding pixels: dimensions,
 * grid layout, rotation/mirror, bit depth, and the av1C configuration.
 * Property lookups are per-item (ipma-based), so grid images report the
 * full output size instead of a tile's.
 */
export declare function getAvifMetadata(buffer: Uint8Array | ArrayBuffer): AvifItemInfo;
/**
 * Decode an AVIF image buffer to RGBA pixel data
 */
export declare function decode(buffer: Uint8Array | ArrayBuffer, options?: AvifDecodeOptions): AvifImageData;
/** Decode every presentation sample in an animated AVIF sequence. */
export declare function decodeSequence(buffer: Uint8Array | ArrayBuffer, options?: AvifDecodeOptions): AvifAnimation;