import { PdfColor, PdfDeviceColorSpace, PdfImageColorSpace, PdfImageData, PdfPrimitive } from '../types';
export type PdfImageDecode = number[];
export type PdfImageColorKeyMask = number[];
type PdfPrimitiveResolver = (value: PdfPrimitive | undefined) => PdfPrimitive | undefined;
export declare const readImageColorSpace: (value: PdfPrimitive | undefined, resolve?: PdfPrimitiveResolver) => PdfImageColorSpace;
export declare const readOptionalDeviceColorSpace: (value: PdfPrimitive | undefined, resolve?: PdfPrimitiveResolver) => PdfDeviceColorSpace | undefined;
export declare const supportsImageBits: (bitsPerComponent: number, colorSpace: PdfImageColorSpace) => boolean;
export declare const readImageDecode: (value: PdfPrimitive | undefined) => PdfImageDecode | undefined;
export declare const readImageColorKeyMask: (value: PdfPrimitive | undefined, colorSpace: PdfImageColorSpace) => PdfImageColorKeyMask | undefined;
export declare const imageSamplesToRgba: (samples: Uint8Array, width: number, height: number, colorSpace: PdfImageColorSpace, bitsPerComponent?: number, decode?: PdfImageDecode) => Uint8ClampedArray;
export declare const applyColorKeyMaskToRgba: (image: PdfImageData, samples: Uint8Array, colorSpace: PdfImageColorSpace, bitsPerComponent: number, mask: PdfImageColorKeyMask | undefined) => PdfImageData;
export declare const imageMaskSamplesToRgba: (samples: Uint8Array, width: number, height: number, decode?: PdfImageDecode) => Uint8ClampedArray;
export declare const colorizeImageMask: (image: PdfImageData, color: PdfColor) => PdfImageData;
export declare const applySoftMaskToRgba: (image: PdfImageData, softMask: PdfImageData) => PdfImageData;
export declare const applyStencilMaskToRgba: (image: PdfImageData, mask: PdfImageData) => PdfImageData;
export {};
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