/** @format */
import { MemoryImage } from '../image/image.js';
import { Decoder, DecoderDecodeOptions } from './decoder.js';
import { ImageFormat } from './image-format.js';
import { TgaInfo } from './tga/tga-info.js';
/**
 * Decode a TGA image. This only supports the 24-bit and 32-bit uncompressed format.
 */
export declare class TgaDecoder implements Decoder {
    /**
     * Input buffer for the TGA image.
     */
    private _input;
    /**
     * Information about the TGA image.
     */
    private _info;
    /**
     * Get the image format.
     * @returns {ImageFormat} The image format.
     */
    get format(): ImageFormat;
    /**
     * Get the number of frames in the image.
     * @returns {number} The number of frames.
     */
    get numFrames(): number;
    /**
     * Decode the color map of the TGA image.
     * @param {Uint8Array} colorMap - The color map data.
     * @param {Palette} palette - The palette to store the decoded colors.
     */
    private decodeColorMap;
    /**
     * Decode the RLE compressed TGA image.
     * @returns {MemoryImage | undefined} The decoded image or undefined if decoding fails.
     */
    private decodeRle;
    /**
     * Decode the RGB TGA image.
     * @returns {MemoryImage | undefined} The decoded image or undefined if decoding fails.
     */
    private decodeRgb;
    /**
     * Is the given file a valid TGA image?
     * @param {Uint8Array} bytes - The file data.
     * @returns {boolean} True if the file is a valid TGA image, false otherwise.
     */
    isValidFile(bytes: Uint8Array): boolean;
    /**
     * Start decoding the TGA image.
     * @param {Uint8Array} bytes - The file data.
     * @returns {TgaInfo | undefined} The TGA image information or undefined if decoding fails.
     */
    startDecode(bytes: Uint8Array): TgaInfo | undefined;
    /**
     * Decode the TGA image.
     * @param {DecoderDecodeOptions} opt - The decode options.
     * @param {Uint8Array} opt.bytes - The file data.
     * @param {number} [opt.frameIndex] - The frame index to decode.
     * @returns {MemoryImage | undefined} The decoded image or undefined if decoding fails.
     */
    decode(opt: DecoderDecodeOptions): MemoryImage | undefined;
    /**
     * Decode a specific frame of the TGA image.
     * @param {number} _frameIndex - The frame index to decode.
     * @returns {MemoryImage | undefined} The decoded image or undefined if decoding fails.
     */
    decodeFrame(_frameIndex: number): MemoryImage | undefined;
}