/**
 * extractPhotoDepth — pull the auxiliary AVDepthData out of a captured
 * photo into a `<photo>.depth.bin` sidecar (iOS only).
 *
 * vision-camera's `enableDepthData` makes AVFoundation embed the depth
 * map (stereo disparity on dual-camera iPhones, LiDAR depth on Pro
 * models) as an auxiliary image INSIDE the JPEG.  Nothing surfaces it to
 * JS, and the SDK's `normaliseOrientation` re-encode strips every
 * auxiliary image — so the ONLY window to save the depth is between
 * `takePhoto()` resolving and `normaliseOrientation()` running.
 * `useCapture.takePhoto` enforces that ordering; if you call this
 * yourself, call it FIRST.
 *
 * Sidecar container format (magic `RNISDEP1` + JSON header + float32
 * metres row-major): documented in `PhotoDepthSidecar.swift` and
 * `website/docs/photo-depth.md`.
 */
export interface ExtractPhotoDepthResult {
    /** True when a depth map was found and the sidecar was written. */
    found: boolean;
    /** Why no depth was found (`found: false` only) — e.g. `no-depth-aux`
     *  on single-lens devices / depth-less formats. */
    reason?: string;
    /** Absolute path of the written sidecar (`found: true` only). */
    sidecarPath?: string;
    /** Depth map dimensions (`found: true` only). */
    width?: number;
    height?: number;
    /** Which auxiliary image the photo carried; payload is always metres. */
    source?: 'disparity' | 'depth';
    /** LiDAR-backed captures report `absolute`; stereo may be `relative`. */
    accuracy?: 'absolute' | 'relative';
    quality?: 'high' | 'low';
    /** Whether pinhole intrinsics made it into the sidecar header. */
    hasIntrinsics?: boolean;
    /** Fraction of depth samples that are finite and > 0. */
    validRatio?: number;
    /** Sidecar file size in bytes. */
    bytes?: number;
}
/**
 * Extract the depth of the photo at `imagePath` into `outputPath`.
 *
 * Resolves `null` when the native module isn't available (Android, or an
 * iOS host built against an older native lib) — callers treat that the
 * same as "no depth".  Resolves `{ found: false, reason }` when the photo
 * simply carries no depth.  Never throws for those benign cases; real
 * I/O failures are caught, warned, and collapsed to `null` too, so the
 * capture pipeline can't be failed by an advisory extra.
 */
export declare function extractPhotoDepth(imagePath: string, outputPath: string): Promise<ExtractPhotoDepthResult | null>;
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