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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Camera Debug Tool - DCE vs Native API Comparison</title>
<script src="https://cdn.jsdelivr.net/npm/dynamsoft-core@3.0.30/dist/core.js"></script>
<script src="https://cdn.jsdelivr.net/npm/dynamsoft-camera-enhancer@4.0.2/dist/dce.js"></script>
<style>
body {
font-family: Arial, sans-serif;
margin: 20px;
}
.debug-section {
border: 1px solid #ddd;
margin: 15px 0;
padding: 15px;
border-radius: 8px;
}
.debug-section h3 {
margin-top: 0;
background: #f5f5f5;
padding: 10px;
margin: -15px -15px 15px -15px;
border-radius: 7px 7px 0 0;
}
.status {
padding: 10px;
margin: 10px 0;
border-radius: 5px;
}
.status.success {
background: #d4edda;
border: 1px solid #c3e6cb;
color: #155724;
}
.status.error {
background: #f8d7da;
border: 1px solid #f5c6cb;
color: #721c24;
}
.status.warning {
background: #fff3cd;
border: 1px solid #ffeaa7;
color: #856404;
}
.status.info {
background: #d1ecf1;
border: 1px solid #bee5eb;
color: #0c5460;
}
.camera-comparison {
display: grid;
grid-template-columns: 1fr 1fr;
gap: 20px;
margin: 20px 0;
}
.camera-list {
background: #f8f9fa;
padding: 15px;
border-radius: 5px;
margin: 10px 0;
}
.camera-item {
padding: 8px;
margin: 5px 0;
background: white;
border-radius: 3px;
border-left: 4px solid #007bff;
}
.camera-item.missing {
border-left-color: #dc3545;
}
.camera-item.extra {
border-left-color: #28a745;
}
button {
background: #007bff;
color: white;
border: none;
padding: 10px 15px;
margin: 5px;
border-radius: 4px;
cursor: pointer;
}
button:hover {
background: #0056b3;
}
button:disabled {
background: #ccc;
cursor: not-allowed;
}
.debug-button {
background: #6c757d;
}
.debug-button:hover {
background: #545b62;
}
.test-button {
background: #28a745;
}
.test-button:hover {
background: #1e7e34;
}
.clear-button {
background: #dc3545;
}
.clear-button:hover {
background: #c82333;
}
#debug-log {
background: #f8f9fa;
border: 1px solid #dee2e6;
padding: 15px;
height: 300px;
overflow-y: auto;
font-family: monospace;
font-size: 12px;
white-space: pre-wrap;
}
.controls {
margin: 15px 0;
}
select {
padding: 8px;
margin: 5px;
border: 1px solid #ddd;
border-radius: 4px;
}
</style>
</head>
<body>
<h1>🔍 Camera Debug Tool - DCE vs Native API Comparison</h1>
<div class="debug-section" style="background: #e8f4fd; border-color: #bee5eb">
<h3 style="background: #d1ecf1; color: #0c5460">ℹ️ Information Notice</h3>
<p style="margin: 0; color: #0c5460">
<strong>Purpose:</strong> This diagnostic tool gathers detailed camera and system information to help the
Dynamsoft team troubleshoot camera detection issues. The generated report contains browser details, camera
enumeration results, and API comparison data that can be shared with Dynamsoft support for technical assistance.
</p>
</div>
<div class="status info">
<strong>Debug Tool Active:</strong> This tool compares Dynamsoft Camera Enhancer (DCE) camera detection with
native Web APIs to help diagnose camera visibility issues.
</div>
<div class="debug-section">
<h3>🎯 Quick Diagnostics</h3>
<div class="controls">
<button id="btn-run-diagnostics" class="test-button">🚀 Run Full Diagnostics</button>
<button id="btn-download-log" class="debug-button">💾 Download Log</button>
<button id="btn-clear-log" class="clear-button">🗑️ Clear Log</button>
</div>
<div id="status-display" class="status info">Click "Run Full Diagnostics" to detect cameras...</div>
</div>
<div class="camera-comparison">
<div class="debug-section">
<h3>📹 DCE Camera Detection</h3>
<div class="controls">
<button id="btn-open-camera">📷 Open Camera</button>
<button id="btn-close-camera">❌ Close Camera</button>
</div>
<label for="select-camera">DCE Camera: </label>
<select name="" id="select-camera"></select>
<br />
<label for="select-resolution">Resolution: </label>
<select name="" id="select-resolution">
<option value="got-resolution" selected>1920*1080</option>
<option value="3840*2160">3840*2160</option>
<option value="1920*1080">1920*1080</option>
<option value="1280*720">1280*720</option>
<option value="640*480">640*480</option>
</select>
<div id="dce-camera-list" class="camera-list">
<em>DCE cameras will appear here...</em>
</div>
</div>
<div class="debug-section">
<h3>🌐 Native Web API Detection</h3>
<div id="native-camera-list" class="camera-list">
<em>Native API cameras will appear here...</em>
</div>
</div>
</div>
<div style="display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin: 20px 0">
<div class="debug-section">
<h3>🖥️ Camera Preview</h3>
<div id="div-ui-container" style="width: 100%; height: 50vh; border: 2px solid #007bff; border-radius: 8px">
<div class="dce-video-container" style="width: 100%; height: 100%"></div>
</div>
</div>
<div class="debug-section">
<h3>📊 Debug Log & Analysis</h3>
<div id="debug-log">🔧 Click "Run Full Diagnostics" to detect cameras...\n</div>
</div>
</div>
<script>
// Debug logging system
const debugLog = document.getElementById("debug-log");
const statusDisplay = document.getElementById("status-display");
function log(message, type = "info") {
const timestamp = new Date().toLocaleTimeString();
const logMessage = `[${timestamp}] ${message}\n`;
debugLog.textContent += logMessage;
debugLog.scrollTop = debugLog.scrollHeight;
if (type === "error") {
console.error(message);
} else if (type === "warn") {
console.warn(message);
} else {
console.log(message);
}
}
function updateStatus(message, type = "info") {
statusDisplay.textContent = message;
statusDisplay.className = `status ${type}`;
log(`Status: ${message}`, type);
}
// Global variables
const uiContainer = document.querySelector("#div-ui-container");
const cameraSelection = document.querySelector("#select-camera");
const resolutionSelection = document.querySelector("#select-resolution");
const dceListElement = document.getElementById("dce-camera-list");
const nativeListElement = document.getElementById("native-camera-list");
let cameraView, cameraEnhancer;
let nativeCameras = [];
let dceCameras = [];
function generateTimestampedFilename(prefix = "camera-debug-log", extension = "txt") {
const now = new Date();
const timestamp =
now.getFullYear() +
String(now.getMonth() + 1).padStart(2, "0") +
String(now.getDate()).padStart(2, "0") +
"_" +
String(now.getHours()).padStart(2, "0") +
String(now.getMinutes()).padStart(2, "0") +
String(now.getSeconds()).padStart(2, "0");
return `${prefix}_${timestamp}.${extension}`;
}
function downloadDebugLog() {
try {
const logContent = debugLog.textContent;
const filename = generateTimestampedFilename("camera-debug-log", "txt");
// Add system info header
const systemInfo =
`Camera Debug Report\n` +
`Generated: ${new Date().toISOString()}\n` +
`User Agent: ${navigator.userAgent}\n` +
`Platform: ${navigator.platform}\n` +
`URL: ${window.location.href}\n` +
`Secure Context: ${window.isSecureContext}\n` +
`===============================================\n\n`;
const fullContent = systemInfo + logContent;
const blob = new Blob([fullContent], { type: "text/plain" });
const url = URL.createObjectURL(blob);
const a = document.createElement("a");
a.href = url;
a.download = filename;
document.body.appendChild(a);
a.click();
document.body.removeChild(a);
URL.revokeObjectURL(url);
log(`✅ Debug log downloaded as: ${filename}`);
updateStatus(`Debug log downloaded: ${filename}`, "success");
} catch (error) {
log(`❌ Failed to download debug log: ${error.message}`, "error");
updateStatus(`Download failed: ${error.message}`, "error");
}
}
// Native Web API functions
async function testNativeAPI() {
log("🌐 Testing Native Web API camera detection...");
updateStatus("Testing native camera API...", "info");
try {
// First, check if mediaDevices is supported
if (!navigator.mediaDevices || !navigator.mediaDevices.enumerateDevices) {
throw new Error("Navigator.mediaDevices.enumerateDevices not supported");
}
log("✅ MediaDevices API is supported");
// Test permission status
if (navigator.permissions) {
try {
const permission = await navigator.permissions.query({ name: "camera" });
log(`📋 Camera permission status: ${permission.state}`);
} catch (e) {
log(`⚠️ Could not query camera permission: ${e.message}`, "warn");
}
}
// Enumerate devices without permission (limited info)
log("🔍 Enumerating devices without permission...");
const devicesWithoutPermission = await navigator.mediaDevices.enumerateDevices();
const camerasWithoutPermission = devicesWithoutPermission.filter((device) => device.kind === "videoinput");
log(`📹 Found ${camerasWithoutPermission.length} video input devices without permission`);
camerasWithoutPermission.forEach((device, index) => {
log(
` Device ${index + 1}: ID=${device.deviceId.substring(0, 8)}..., Label="${
device.label || "Unknown"
}", GroupId=${device.groupId || "None"}`
);
});
// Request camera permission to get device labels
log("🔓 Requesting camera permission for detailed device info...");
let stream;
try {
stream = await navigator.mediaDevices.getUserMedia({
video: {
width: { ideal: 1280 },
height: { ideal: 720 },
},
});
log("✅ Camera permission granted successfully");
// Stop the stream immediately
stream.getTracks().forEach((track) => {
track.stop();
log(`🛑 Stopped track: ${track.kind} (${track.label})`);
});
} catch (permissionError) {
log(`❌ Camera permission denied: ${permissionError.message}`, "error");
// Continue with limited info
}
// Enumerate again with permission
log("🔍 Re-enumerating devices with permission...");
const devicesWithPermission = await navigator.mediaDevices.enumerateDevices();
nativeCameras = devicesWithPermission.filter((device) => device.kind === "videoinput");
log(`📹 Total video input devices found: ${nativeCameras.length}`);
if (nativeCameras.length === 0) {
log("⚠️ No video input devices detected by native API", "warn");
updateStatus("No cameras detected by native API", "warning");
} else {
updateStatus(`Native API detected ${nativeCameras.length} camera(s)`, "success");
}
// Display detailed camera information
nativeCameras.forEach((device, index) => {
log(`📷 Camera ${index + 1}:`);
log(` Device ID: ${device.deviceId}`);
log(` Label: "${device.label || "Permission required for label"}"`);
log(` Group ID: ${device.groupId || "None"}`);
// Try to get capabilities if possible
try {
if (device.deviceId && device.deviceId !== "") {
// Note: getCapabilities requires a MediaStreamTrack, not MediaDeviceInfo
log(` Device ID available for constraints`);
}
} catch (e) {
log(` Could not get capabilities: ${e.message}`);
}
});
displayNativeCameras();
return nativeCameras;
} catch (error) {
log(`❌ Native API Error: ${error.message}`, "error");
updateStatus(`Native API failed: ${error.message}`, "error");
throw error;
}
}
async function testCameraConstraints() {
log("⚙️ Testing different camera constraints...");
const constraints = [
{ video: true },
{ video: { facingMode: "user" } },
{ video: { facingMode: "environment" } },
{ video: { width: 1920, height: 1080 } },
{ video: { width: { ideal: 1920 }, height: { ideal: 1080 } } },
];
for (let i = 0; i < constraints.length; i++) {
const constraint = constraints[i];
log(`🧪 Testing constraint ${i + 1}: ${JSON.stringify(constraint)}`);
try {
const stream = await navigator.mediaDevices.getUserMedia(constraint);
const track = stream.getVideoTracks()[0];
const settings = track.getSettings();
log(`✅ Constraint ${i + 1} successful:`);
log(` Track label: ${track.label}`);
log(` Device ID: ${settings.deviceId}`);
log(` Resolution: ${settings.width}x${settings.height}`);
log(` Facing mode: ${settings.facingMode || "not specified"}`);
track.stop();
} catch (error) {
log(`❌ Constraint ${i + 1} failed: ${error.message}`, "warn");
}
}
}
function displayNativeCameras() {
nativeListElement.innerHTML = "";
if (nativeCameras.length === 0) {
nativeListElement.innerHTML = "<em>No cameras detected by native API</em>";
return;
}
nativeCameras.forEach((camera, index) => {
const item = document.createElement("div");
item.className = "camera-item";
item.innerHTML = `
<strong>Camera ${index + 1}</strong><br>
<strong>Label:</strong> ${camera.label || "Permission required"}<br>
<strong>Device ID:</strong> ${camera.deviceId}<br>
<strong>Group ID:</strong> ${camera.groupId || "None"}
`;
nativeListElement.appendChild(item);
});
}
// DCE functions (enhanced with debugging)
const init = async () => {
log("🚀 Initializing DCE (Dynamsoft Camera Enhancer)...");
updateStatus("Initializing DCE...", "info");
if (cameraEnhancer) {
log("ℹ️ DCE already initialized");
return;
}
try {
log("🧪 Testing DCE camera access...");
const testResult = await Dynamsoft.DCE.CameraEnhancer.testCameraAccess();
log(`📋 DCE testCameraAccess result: ${JSON.stringify(testResult)}`);
if (!testResult.ok) {
log(`❌ DCE camera access test failed: ${testResult.message}`, "error");
updateStatus(`DCE camera test failed: ${testResult.message}`, "error");
alert(testResult.message);
return;
}
log("✅ DCE camera access test passed");
log("🏗️ Creating DCE CameraView instance...");
cameraView = await Dynamsoft.DCE.CameraView.createInstance(uiContainer);
log("✅ DCE CameraView created successfully");
log("🏗️ Creating DCE CameraEnhancer instance...");
cameraEnhancer = await Dynamsoft.DCE.CameraEnhancer.createInstance(cameraView);
log("✅ DCE CameraEnhancer created successfully");
await getCameraList();
updateStatus("DCE initialized successfully", "success");
} catch (error) {
log(`❌ DCE Initialization Error: ${error.message}`, "error");
updateStatus(`DCE initialization failed: ${error.message}`, "error");
throw error;
}
};
const getCameraList = async () => {
log("📹 Getting DCE camera list...");
if (!cameraEnhancer) {
log("❌ CameraEnhancer not initialized", "error");
return null;
}
try {
const startTime = performance.now();
dceCameras = await cameraEnhancer.getAllCameras();
const endTime = performance.now();
log(`⏱️ DCE getAllCameras took ${(endTime - startTime).toFixed(2)}ms`);
log(`📹 DCE found ${dceCameras.length} cameras`);
if (dceCameras.length === 0) {
log("⚠️ No cameras detected by DCE", "warn");
}
cameraSelection.innerHTML = "";
dceCameras.forEach((camera, index) => {
log(`📷 DCE Camera ${index + 1}:`);
log(` Device ID: ${camera.deviceId}`);
log(` Label: "${camera.label}"`);
const option = document.createElement("option");
option.innerText = camera.label;
option.value = camera.deviceId;
cameraSelection.add(option);
});
displayDCECameras();
return dceCameras;
} catch (error) {
log(`❌ DCE getCameraList Error: ${error.message}`, "error");
throw error;
}
};
function displayDCECameras() {
dceListElement.innerHTML = "";
if (dceCameras.length === 0) {
dceListElement.innerHTML = "<em>No cameras detected by DCE</em>";
return;
}
dceCameras.forEach((camera, index) => {
const item = document.createElement("div");
item.className = "camera-item";
item.innerHTML = `
<strong>Camera ${index + 1}</strong><br>
<strong>Label:</strong> ${camera.label}<br>
<strong>Device ID:</strong> ${camera.deviceId}
`;
dceListElement.appendChild(item);
});
}
// Comparison and analysis functions
function compareAPIs() {
log("🔄 Comparing DCE vs Native API results...");
updateStatus("Comparing API results...", "info");
log(`📊 COMPARISON SUMMARY:`);
log(` DCE detected: ${dceCameras.length} cameras`);
log(` Native API detected: ${nativeCameras.length} cameras`);
if (dceCameras.length === nativeCameras.length) {
log("✅ Both APIs detected the same number of cameras");
updateStatus("Both APIs detected the same number of cameras", "success");
} else {
log(`⚠️ Camera count mismatch! DCE: ${dceCameras.length}, Native: ${nativeCameras.length}`, "warn");
updateStatus(`Camera count mismatch: DCE=${dceCameras.length}, Native=${nativeCameras.length}`, "warning");
}
// Detailed comparison
log("🔍 Detailed camera comparison:");
// Check for cameras in DCE but not in native
dceCameras.forEach((dceCamera, index) => {
const foundInNative = nativeCameras.find((native) => native.deviceId === dceCamera.deviceId);
if (foundInNative) {
log(`✅ DCE Camera ${index + 1} (${dceCamera.label}) found in native API`);
} else {
log(`❌ DCE Camera ${index + 1} (${dceCamera.label}) NOT found in native API`, "warn");
}
});
// Check for cameras in native but not in DCE
nativeCameras.forEach((nativeCamera, index) => {
const foundInDCE = dceCameras.find((dce) => dce.deviceId === nativeCamera.deviceId);
if (foundInDCE) {
log(`✅ Native Camera ${index + 1} (${nativeCamera.label}) found in DCE`);
} else {
log(`❌ Native Camera ${index + 1} (${nativeCamera.label}) NOT found in DCE`, "warn");
}
});
// Analysis and recommendations
log("💡 ANALYSIS & RECOMMENDATIONS:");
if (dceCameras.length === 0 && nativeCameras.length === 0) {
log("🔍 Both APIs show no cameras. Potential issues:");
log(" - No cameras physically connected");
log(" - Camera drivers not installed");
log(" - Cameras in use by other applications");
log(" - Browser permission denied");
log(" - Hardware/OS level camera access blocked");
} else if (dceCameras.length === 0 && nativeCameras.length > 0) {
log("🔍 Native API detects cameras but DCE does not. Potential DCE issues:");
log(" - DCE compatibility with current browser");
log(" - DCE version compatibility");
log(" - DCE initialization problems");
log(" - Camera format/driver compatibility with DCE");
} else if (dceCameras.length > 0 && nativeCameras.length === 0) {
log("🔍 DCE detects cameras but native API does not. This is unusual:");
log(" - Browser permission issues with native API");
log(" - DCE using different detection method");
log(" - Possible DCE false positive");
} else if (dceCameras.length !== nativeCameras.length) {
log("🔍 Different camera counts detected:");
log(" - Some cameras may not be compatible with one API");
log(" - Virtual cameras or software cameras present");
log(" - Driver compatibility issues");
log(" - Permission differences between APIs");
}
}
async function runFullDiagnostics() {
log("🚀 Starting Full Camera Diagnostics...");
log("================================================");
updateStatus("Running full diagnostics...", "info");
try {
// Browser and environment info
log("🌐 BROWSER & ENVIRONMENT INFO:");
log(` User Agent: ${navigator.userAgent}`);
log(` Platform: ${navigator.platform}`);
log(` Language: ${navigator.language}`);
log(` Online: ${navigator.onLine}`);
log(` Secure Context: ${window.isSecureContext}`);
log(` Location Protocol: ${window.location.protocol}`);
// Check for required APIs
log("🔧 API AVAILABILITY CHECK:");
log(` navigator.mediaDevices: ${!!navigator.mediaDevices}`);
log(` enumerateDevices: ${!!(navigator.mediaDevices && navigator.mediaDevices.enumerateDevices)}`);
log(` getUserMedia: ${!!(navigator.mediaDevices && navigator.mediaDevices.getUserMedia)}`);
log(` Dynamsoft.DCE: ${!!window.Dynamsoft && !!window.Dynamsoft.DCE}`);
// Test Native API first
log("\n📱 PHASE 1: Native Web API Testing");
log("==========================================");
await testNativeAPI();
// Initialize and test DCE
log("\n🔧 PHASE 2: DCE (Dynamsoft Camera Enhancer) Testing");
log("==========================================");
await init();
// Compare results
log("\n🔄 PHASE 3: API Comparison & Analysis");
log("==========================================");
compareAPIs();
// Additional constraint testing
log("\n⚙️ PHASE 4: Advanced Camera Constraint Testing");
log("==========================================");
await testCameraConstraints();
log("\n✅ DIAGNOSTICS COMPLETE");
log("================================================");
updateStatus("Diagnostics completed successfully", "success");
// Auto-download the diagnostic report
log("💾 Auto-downloading diagnostic report...");
downloadDebugLog();
} catch (error) {
log(`❌ DIAGNOSTICS FAILED: ${error.message}`, "error");
updateStatus(`Diagnostics failed: ${error.message}`, "error");
}
}
// Original DCE functions (enhanced)
const renderCurCamera = () => {
if (!cameraEnhancer) {
log("⚠️ Cannot render current camera - CameraEnhancer not initialized", "warn");
return;
}
try {
const curCamera = cameraEnhancer.getSelectedCamera();
log(`🎯 Current camera: ${curCamera.label} (${curCamera.deviceId})`);
for (let option of cameraSelection.options) {
if (option.value === curCamera.deviceId) {
cameraSelection.value = option.value;
break;
}
}
} catch (error) {
log(`❌ Error rendering current camera: ${error.message}`, "error");
}
};
const renderCurResolution = () => {
if (!cameraEnhancer) {
log("⚠️ Cannot render current resolution - CameraEnhancer not initialized", "warn");
return;
}
try {
const curResolution = cameraEnhancer.getResolution();
log(`📐 Current resolution: ${curResolution.width}x${curResolution.height}`);
resolutionSelection.item(0).innerText = `${curResolution.width}*${curResolution.height}`;
resolutionSelection.selectedIndex = 0;
} catch (error) {
log(`❌ Error rendering current resolution: ${error.message}`, "error");
}
};
// Event listeners
document.querySelector("#btn-open-camera").onclick = async () => {
log("📷 Opening camera...");
updateStatus("Opening camera...", "info");
try {
if (!cameraEnhancer) {
throw new Error("CameraEnhancer not initialized. Please run diagnostics first.");
}
await cameraEnhancer.open();
log("✅ Camera opened successfully");
updateStatus("Camera opened successfully", "success");
renderCurCamera();
renderCurResolution();
} catch (error) {
log(`❌ Failed to open camera: ${error.message}`, "error");
updateStatus(`Failed to open camera: ${error.message}`, "error");
}
};
document.querySelector("#btn-close-camera").onclick = async () => {
log("❌ Closing camera...");
updateStatus("Closing camera...", "info");
try {
if (!cameraEnhancer) {
log("⚠️ CameraEnhancer not initialized", "warn");
return;
}
await cameraEnhancer.close();
log("✅ Camera closed successfully");
updateStatus("Camera closed successfully", "success");
} catch (error) {
log(`❌ Failed to close camera: ${error.message}`, "error");
updateStatus(`Failed to close camera: ${error.message}`, "error");
}
};
// New event listeners for debug features
document.querySelector("#btn-run-diagnostics").onclick = runFullDiagnostics;
document.querySelector("#btn-download-log").onclick = downloadDebugLog;
document.querySelector("#btn-clear-log").onclick = () => {
debugLog.textContent = "🔧 Debug log cleared.\n";
updateStatus("Debug log cleared", "info");
};
cameraSelection.addEventListener("change", async () => {
if (!cameraEnhancer) return;
try {
log(`🔄 Switching to camera: ${cameraSelection.options[cameraSelection.selectedIndex].text}`);
await cameraEnhancer.selectCamera(cameraSelection.value);
renderCurCamera();
updateStatus("Camera switched successfully", "success");
} catch (error) {
log(`❌ Failed to switch camera: ${error.message}`, "error");
updateStatus(`Failed to switch camera: ${error.message}`, "error");
}
});
resolutionSelection.addEventListener("change", async () => {
if (!cameraEnhancer) return;
try {
const str = resolutionSelection.value;
const index = str.indexOf("*");
const width = parseInt(str.slice(0, index));
const height = parseInt(str.slice(index + 1));
log(`📐 Setting resolution to ${width}x${height}`);
await cameraEnhancer.setResolution({ width, height });
renderCurResolution();
updateStatus("Resolution changed successfully", "success");
} catch (error) {
log(`❌ Failed to change resolution: ${error.message}`, "error");
updateStatus(`Failed to change resolution: ${error.message}`, "error");
}
});
// Initialize on page load
log('🚀 Camera Debug Tool loaded. Click "Run Full Diagnostics" to check camera detection issues.');
updateStatus('Click "Run Full Diagnostics" to check camera detection issues', "info");
</script>
</body>
</html>