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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 | 97x 97x 97x 97x 97x 97x 97x 97x 97x 4x 4x 4x 2x 2x 2x 2x 2x 2x 2x 2x 4x 97x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 97x 11x 11x 1x 1x 1x 97x 1x 97x 29x 3x 3x 1x 2x 2x | import { useRef, useState } from "react";
export default function useManageCamera(config?: MediaStreamConstraints) {
const [stream, setStream] = useState<MediaStream | null>(null);
const [image, setImage] = useState<string | null>(null);
const videoRef = useRef<HTMLVideoElement | null>(null);
const [cameraPermission, setCameraPermission] =
useState<PermissionState | null>(null);
const [isLoading, setIsloading] = useState(false);
const canvasRef = useRef<HTMLCanvasElement | null>(null);
const [isSessionActive, setIsSessionActive] = useState(false);
const [streamLoading, setStreamLoading] = useState(false);
const requestCameraAccess = async () => {
try {
setStreamLoading(true);
const permissionStatus = await navigator.permissions.query({
name: "camera" as PermissionName,
});
setCameraPermission(permissionStatus.state); // "granted" | "denied" | "prompt"
// Listen to future changes (e.g., user changes permissions in browser settings)
permissionStatus.onchange = () => {
setCameraPermission(permissionStatus.state);
};
Iif (permissionStatus.state === "denied") {
console.warn("Camera access denied by user.");
return;
}
const mediaStream = await navigator.mediaDevices.getUserMedia({
video: config?.video ? config.video : true,
audio: config?.audio ? config.audio : false,
});
setStream(mediaStream);
setIsSessionActive(true);
Iif (videoRef.current) {
videoRef.current.srcObject = mediaStream;
}
} catch (error) {
console.error("Error accessing camera:", error);
} finally {
setStreamLoading(false);
}
};
const takePicture = () => {
const video = videoRef.current;
const canvas = canvasRef.current;
Iif (!video || !canvas) return;
const context = canvas.getContext("2d");
Iif (!context) return;
canvas.width = video.videoWidth;
canvas.height = video.videoHeight;
context.drawImage(video, 0, 0, canvas.width, canvas.height);
// Convert canvas image to a data URL
const imageDataUrl = canvas.toDataURL("image/png");
setImage(imageDataUrl);
};
// Stop the camera stream
const stopCamera = () => {
Iif (videoRef.current) {
videoRef.current.pause();
videoRef.current.srcObject = null;
}
if (stream) {
stream.getTracks().forEach((track) => {
track.stop();
});
setStream(null);
}
};
const handleEndSession = () => {
setIsSessionActive(false);
};
return {
requestCameraAccess,
takePicture,
stopCamera,
videoRef,
canvasRef,
image,
stream,
setImage,
isLoading,
isSessionActive,
handleEndSession,
setIsloading,
disabled: cameraPermission === "denied",
streamLoading,
};
}
export type UseManageCameraType = ReturnType<typeof useManageCamera>;
export const checkIfCameraExists = async (): Promise<boolean> => {
try {
const devices = await navigator.mediaDevices.enumerateDevices();
return devices.some((device) => device.kind === "videoinput");
} catch (error) {
console.error("Error checking for camera:", error);
return false;
}
};
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