react-native-vision-camera/lib/hooks/usePhotoOutput.js

VisionCamera is the fastest and most powerful Camera for react-native.

import { useMemo } from 'react';
import { CommonResolutions } from '../utils/CommonResolutions';
import { VisionCamera } from '../VisionCamera';
/**
 * Use a {@linkcode CameraPhotoOutput} for capturing {@linkcode Photo}s.
 *
 * The returned {@linkcode CameraPhotoOutput} can be passed to a
 * {@linkcode Camera} to enable photo capture. Photos can then be captured
 * via {@linkcode CameraPhotoOutput.capturePhoto | capturePhoto(...)}.
 *
 * @example
 * ```ts
 * const photoOutput = usePhotoOutput({
 *   targetResolution: CommonResolutions.UHD_4_3,
 *   qualityPrioritization: 'quality',
 * })
 *
 * // ...
 * const photo = await photoOutput.capturePhoto({ flashMode: 'on' }, {})
 * // ...
 * photo.dispose()
 * ```
 */
export function usePhotoOutput({ targetResolution = CommonResolutions.UHD_4_3, containerFormat = 'native', quality = 0.9, qualityPrioritization = 'balanced', previewImageTargetSize = undefined, } = {}) {
    // 1. Create photo output
    const photoOutput = useMemo(() => VisionCamera.createPhotoOutput({
        targetResolution: targetResolution,
        containerFormat: containerFormat,
        quality: quality,
        qualityPrioritization: qualityPrioritization,
        previewImageTargetSize: previewImageTargetSize,
    }), [
        targetResolution,
        containerFormat,
        quality,
        qualityPrioritization,
        previewImageTargetSize,
    ]);
    return photoOutput;
}