import { Chunk, ChunkHeader } from "./Chunk";
import { ChunkTransparency } from "./ChunkTransparency";
export interface RGB {
    r: number;
    g: number;
    b: number;
}
export interface RGBA {
    r: number;
    g: number;
    b: number;
    a: number;
}
export interface RGBAFrequency {
    r: number;
    g: number;
    b: number;
    a: number;
    frequency: number;
}
export declare class ChunkPalette extends Chunk {
    colors: Readonly<RGB>[];
    constructor(colors: Readonly<RGB>[]);
    static parse(length: number, type: string, crc: number, view: DataView, offset: number, header: ChunkHeader): ChunkPalette;
    createRGBAPalette(transparency?: ChunkTransparency): ReadonlyArray<RGBA>;
    chunkComputeLength(header: ChunkHeader): number;
    chunkSave(header: ChunkHeader, view: DataView, offset: number): void;
    chunkClone(): ChunkPalette;
}
export declare class ChunkPaletteHistogram extends Chunk {
    colors: number[];
    constructor(colors: number[]);
    static parse(length: number, type: string, crc: number, view: DataView, offset: number, header: ChunkHeader): ChunkPaletteHistogram;
    chunkComputeLength(header: ChunkHeader): number;
    chunkSave(header: ChunkHeader, view: DataView, offset: number): void;
    chunkClone(): ChunkPaletteHistogram;
}
export declare class ChunkPaletteSuggestion extends Chunk {
    name: string;
    depth: number;
    colors: Readonly<RGBAFrequency>[];
    constructor(name: string, depth: number, colors: Readonly<RGBAFrequency>[]);
    static parse(length: number, type: string, crc: number, view: DataView, offset: number, header: ChunkHeader): ChunkPaletteSuggestion;
    chunkComputeLength(header: ChunkHeader): number;
    chunkSave(header: ChunkHeader, view: DataView, offset: number): void;
    chunkClone(): ChunkPaletteSuggestion;
}