export declare const FATBIN_MAGIC = 3126193488;
export declare const MAX_CONTAINERS = 64;
export declare const MAX_ENTRIES = 256;
/** The most one entry may decompress to, and the most all entries of one file may. */
export declare const MAX_ENTRY_BYTES: number;
export declare const MAX_TOTAL_BYTES: number;
export type Compression = 'none' | 'zstd' | 'lz4' | 'unknown';
export type Zstd = (input: Buffer, maxOutput: number) => Buffer;
export declare const defaultZstd: Zstd | null;
export interface RawEntry {
    container: number;
    index: number;
    kind: number;
    headerSize: number;
    paddedSize: number;
    compressedSize: number;
    version: number;
    archNumber: number;
    objNameOffset: number;
    objNameLen: number;
    flags: bigint;
    decompressedSize: number;
    /** Where the payload starts in the buffer, and how many bytes of it are really there. */
    payloadOffset: number;
    payloadLength: number;
}
/** Walks the containers in b[start, end). A malformed header ends the walk with a warning; what was read stays. */
export declare function walkFatbin(b: Buffer, start: number, end: number, warnings: string[]): {
    entries: RawEntry[];
    containers: number;
    truncated: boolean;
};
/**
 * An LZ4 block (no frame), as CUDA 12 writes. Original: reads only inside `src`, writes only inside `maxOut`, refuses a match offset
 * that points before the start of the output. Throws RangeError on any malformed input.
 */
export declare function lz4Block(src: Buffer, maxOut: number): Buffer;
export interface Payload {
    /** The bytes of the cubin or the PTX text, or null when they could not be read (the reason is in `note`). */
    data: Buffer | null;
    compressed: Compression;
    note?: string;
}
/** The entry's payload as bytes, decompressed when it is and when it may be. `budget.left` is spent by what each attempt claims, win or lose. */
export declare function readPayload(b: Buffer, entry: RawEntry, zstd: Zstd | null, budget: {
    left: number;
}): Payload;
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