contents of zip

scripts/camera_worker.js

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+<?php
+
+	// Included files
+	require_once __DIR__ . "/../backend/common.php";
+	require_once __DIR__ . "/../backend/resources.php";
+	
+	
+	// Main function
+	
+	// Set content type header
+	header("Content-Type: application/javascript; charset=" . mb_internal_encoding());
+
+?>// Use strict
+"use strict";
+
+
+// Import scripts
+importScripts(".<?= escapeString(getResource("./scripts/camera.js")); ?>");
+importScripts(".<?= escapeString(getResource("./scripts/jsQR-1.4.0.js")); ?>");
+
+
+// Constants
+
+// No QR code
+const NO_QR_CODE = null;
+
+
+// Global variables
+
+// URL query string
+var URL_QUERY_STRING;
+
+
+// Events
+
+// Message event
+self.addEventListener("message", function(event) {
+
+	// Get message
+	var message = event["data"];
+	
+	// Get message's request index
+	var requestIndex = message[Camera.MESSAGE_REQUEST_INDEX_OFFSET];
+	
+	// Get message's type
+	var type = message[Camera.MESSAGE_TYPE_OFFSET];
+	
+	// Check type
+	switch(type) {
+	
+		// Initialize request type
+		case Camera.INITIALIZE_REQUEST_TYPE:
+		
+			// Get message's URL query string
+			URL_QUERY_STRING = message[Camera.MESSAGE_INITIALIZE_URL_QUERY_STRING_OFFSET];
+		
+			// Respond with success status
+			postMessage([
+			
+				// Request index
+				requestIndex,
+			
+				// Type
+				type,
+			
+				// Status
+				Camera.STATUS_SUCCESS_VALUE
+			]);
+		
+			// Break
+			break;
+		
+		// Uninitialize request type
+		case Camera.UNINITIALIZE_REQUEST_TYPE:
+		
+			// Respond with success status
+			postMessage([
+			
+				// Request index
+				requestIndex,
+			
+				// Type
+				type,
+			
+				// Status
+				Camera.STATUS_SUCCESS_VALUE
+			]);
+		
+			// Break
+			break;
+		
+		// Decode request type
+		case Camera.DECODE_REQUEST_TYPE:
+		
+			// Get message's width
+			var width = message[Camera.MESSAGE_WIDTH_OFFSET];
+			
+			// Get message's height
+			var height = message[Camera.MESSAGE_HEIGHT_OFFSET];
+			
+			// Get message's image data
+			var imageData = new Uint8Array(message[Camera.MESSAGE_IMAGE_DATA_OFFSET]);
+			
+			// Get QR code from image data, width, and height
+			var qrCode = jsQR(imageData, width, height, {
+			
+				// Inversion attempts
+				"inversionAttempts": "attemptBoth"
+			});
+			
+			// Check if getting QR code failed
+			if(qrCode === NO_QR_CODE) {
+			
+				// Respond with no value
+				postMessage([
+				
+					// Request index
+					requestIndex,
+				
+					// Type
+					type,
+				
+					// Value
+					Camera.NO_VALUE
+				]);
+			}
+			
+			// Otherwise
+			else {
+			
+				// Respond with value
+				postMessage([
+				
+					// Request index
+					requestIndex,
+				
+					// Type
+					type,
+				
+					// Value
+					[
+					
+						// Data
+						qrCode["data"],
+						
+						// Top left corner X
+						qrCode["location"]["topLeftCorner"]["x"],
+						
+						// Top left corner Y
+						qrCode["location"]["topLeftCorner"]["y"],
+						
+						// Top right corner X
+						qrCode["location"]["topRightCorner"]["x"],
+						
+						// Top right corner Y
+						qrCode["location"]["topRightCorner"]["y"],
+						
+						// Bottom left corner X
+						qrCode["location"]["bottomLeftCorner"]["x"],
+						
+						// Bottom left corner Y
+						qrCode["location"]["bottomLeftCorner"]["y"],
+						
+						// Bottom right corner X
+						qrCode["location"]["bottomRightCorner"]["x"],
+						
+						// Bottom right corner Y
+						qrCode["location"]["bottomRightCorner"]["y"]
+					]
+				]);
+			}
+			
+			// Break;
+			break;
+	}
+});