@face-auth/face-id-video/dist/src/faceVideo.js

Utility library for capturing photos from webcam video streams in the browser. Handles camera selection, image formatting, and output for face authentication APIs.

var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
    function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
    return new (P || (P = Promise))(function (resolve, reject) {
        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
        function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
        function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
        step((generator = generator.apply(thisArg, _arguments || [])).next());
    });
};
import { FaceCameraManager } from "./faceCameraManager";
import { FacePhotoManager } from "./facePhotoManager";
export class FaceVideo {
    constructor(video) {
        this.onCameraStartedCallbacks = new Set();
        this.cameraManager = new FaceCameraManager(video);
        this.photoManager = null;
    }
    /**
     * Get all video input devices.
     */
    getDevices() {
        return __awaiter(this, void 0, void 0, function* () {
            return this.cameraManager.getDevices();
        });
    }
    /**
     * Start video stream with optional deviceId.
     */
    start() {
        return __awaiter(this, arguments, void 0, function* (options = {}, deviceId) {
            return yield this.cameraManager.start(options, deviceId)
                .then(videoElement => {
                this.photoManager = new FacePhotoManager(videoElement);
            })
                .then(() => {
                this.emitCameraStarted();
            });
        });
    }
    /**
     * Stop the video stream and clean up.
     */
    stop() {
        this.cameraManager.stop();
    }
    /**
     * Capture the current frame and return it as Blob.
     */
    capture(options) {
        return __awaiter(this, void 0, void 0, function* () {
            if (!this.photoManager) {
                return new Promise((_, reject) => {
                    // TODO: code error
                    reject("NO_VIDEO_INITIALIZED");
                });
            }
            return yield this.photoManager.capture(options);
        });
    }
    /**
     * Subscribe to the camera started event.
     */
    onCameraStarted(callback) {
        this.onCameraStartedCallbacks.add(callback);
    }
    /**
      * Unsubscribe from the camera started event.
      */
    offCameraStarted(callback) {
        this.onCameraStartedCallbacks.delete(callback);
    }
    /**
     * Internal method to notify all subscribers.
     */
    emitCameraStarted() {
        for (const cb of this.onCameraStartedCallbacks) {
            try {
                cb();
            }
            catch (err) {
                console.error("Error in camera started callback", err);
            }
        }
    }
}