/**
 * FFI Foundation - Koffi bindings for libnextimage
 * This module loads the C library and defines all function signatures
 */
import koffi from 'koffi';
/**
 * Define C struct types for Koffi
 */
declare const NextImageBufferStruct: koffi.IKoffiCType;
declare const NextImageDecodeBufferStruct: koffi.IKoffiCType;
declare const NextImageWebPEncodeOptionsStruct: koffi.IKoffiCType;
declare const NextImageAVIFEncodeOptionsStruct: koffi.IKoffiCType;
declare const NextImageAVIFDecodeOptionsStruct: koffi.IKoffiCType;
declare const NextImageWebPDecodeOptionsStruct: koffi.IKoffiCType;
/**
 * Common Functions
 */
export declare const nextimage_free_buffer: koffi.KoffiFunction;
export declare const nextimage_free_decode_buffer: koffi.KoffiFunction;
export declare const nextimage_last_error_message: koffi.KoffiFunction;
export declare const nextimage_clear_error: koffi.KoffiFunction;
/**
 * WebP Functions
 */
export declare const nextimage_webp_default_encode_options: koffi.KoffiFunction;
export declare const nextimage_webp_default_decode_options: koffi.KoffiFunction;
export declare const nextimage_webp_encode_alloc: koffi.KoffiFunction;
export declare const nextimage_webp_decode_alloc: koffi.KoffiFunction;
export declare const nextimage_webp_decode_size: koffi.KoffiFunction;
/**
 * WebP Encoder/Decoder Instance Functions
 */
export declare const nextimage_webp_encoder_create: koffi.KoffiFunction;
export declare const nextimage_webp_encoder_encode: koffi.KoffiFunction;
export declare const nextimage_webp_encoder_destroy: koffi.KoffiFunction;
export declare const nextimage_webp_decoder_create: koffi.KoffiFunction;
export declare const nextimage_webp_decoder_decode: koffi.KoffiFunction;
export declare const nextimage_webp_decoder_destroy: koffi.KoffiFunction;
/**
 * AVIF Functions
 */
export declare const nextimage_avif_default_encode_options: koffi.KoffiFunction;
export declare const nextimage_avif_default_decode_options: koffi.KoffiFunction;
export declare const nextimage_avif_encode_alloc: koffi.KoffiFunction;
export declare const nextimage_avif_decode_alloc: koffi.KoffiFunction;
export declare const nextimage_avif_decode_size: koffi.KoffiFunction;
/**
 * AVIF Encoder/Decoder Instance Functions
 */
export declare const nextimage_avif_encoder_create: koffi.KoffiFunction;
export declare const nextimage_avif_encoder_encode: koffi.KoffiFunction;
export declare const nextimage_avif_encoder_destroy: koffi.KoffiFunction;
export declare const nextimage_avif_decoder_create: koffi.KoffiFunction;
export declare const nextimage_avif_decoder_decode: koffi.KoffiFunction;
export declare const nextimage_avif_decoder_destroy: koffi.KoffiFunction;
/**
 * Export struct types for use in high-level APIs
 */
export { NextImageBufferStruct, NextImageDecodeBufferStruct, NextImageWebPEncodeOptionsStruct, NextImageWebPDecodeOptionsStruct, NextImageAVIFEncodeOptionsStruct, NextImageAVIFDecodeOptionsStruct };
/**
 * NULL pointer constant for koffi pointer comparison
 */
export declare const NULL_POINTER = 0n;
/**
 * Helper: Check if a koffi pointer is NULL
 * @param ptr The pointer to check
 * @returns true if the pointer is NULL or undefined
 */
export declare function isNullPointer(ptr: any): boolean;
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