Overview

• File: lib/views/call_page.dart

The call_page.dart file implements the video call interface for the HVC XR application. It provides a comprehensive video conferencing experience with features like camera controls, audio management, chat functionality, and device-specific optimizations for RealWear devices.

Class Structure

class CallPage extends StatefulWidget {
  static const String routeName = '/MeetingPage';

  final CallDetails callDetails;
  final bool isEventOwner;
  final bool isGuest;
  final bool isRapidConnect;
}

class _CallPageState extends State<CallPage> with WidgetsBindingObserver {
  // State implementation
}

Dependencies

• dart:async - For asynchronous operations
• dart:core - Core Dart functionality
• dart:io - Platform-specific functionality
• flutter/material.dart - Flutter UI components
• get/get.dart - State management
• hippo_web_rtc - WebRTC implementation
• onesignal_flutter - Push notifications
• uuid - Unique identifier generation
• wakelock - Screen wake lock management

Key Components

State Variables

• _localVideoRenderer - Renders local video stream
• _remoteVideoRenderer - Renders remote video stream
• _sessionId - Unique session identifier
• _sessionDate - Session timestamp
• availableList - List of available participants
• chatOptions - Chat configuration options
• imageUrl - URL for shared images
• timeString - Call duration display

Controllers

• pexipController - Manages Pexip video call functionality
• mediaController - Handles media operations
• meetingsController - Manages meeting state
• messagesController - Handles chat messages
• contactsController - Manages contact information
• eventsController - Handles event-related operations
• realTimeController - Manages real-time communication
• authController - Handles authentication
• digilensController - Manages DigiLens-specific features

Core Functionality

Video Call Management

void _handleStartCall() async {
  await pexipController.start();
  realTimeController.sendState('call');
}

Camera Controls

• Camera switching
• Zoom control
• Torch control
• Laser pointer (device-specific)
• Exposure adjustment

Audio Management

Future<void> _audioAndSpeaker(bool onOrOff) async {
  await pexipController.setAudioOnOrOff(onOrOff);
  await _changeSpeakerState(onOrOff);
}

Device Information

Future<void> updateDeviceInfoOnServer() async {
  final deviceInfo = HeadsetDeviceInfo(
    contactName: user.name,
    deviceName: deviceId,
    deviceType: deviceType,
    // ... other device information
  );
  await realTimeController.callDeviceStatus(deviceInfo);
}

Remote Control Handling

void _handleRemoteControl(RemoteControlResponse remoteControl) async {
  // Handles various remote control actions:
  // - Exposure adjustment
  // - Photo capture
  // - Zoom control
  // - Torch control
  // - Laser control
  // - Camera switching
}

UI Components

Main Layout

• Video display area
• Control buttons
• Participant list
• Chat window
• Device controls

Control Buttons

• Audio mute/unmute
• Video on/off
• Camera switch
• Zoom control
• Remote control
• View switch
• Participant view
• Chat toggle
• More options

Voice Commands

void registerCallCommands() {
  voiceCommandMap['participants'] = () => handleParticipantsAndMainView();
  voiceCommandMap['mainView'] = () => handleParticipantsAndMainView();
  voiceCommandMap['zoom'] = () => handleZoom();
  // ... other voice commands
}

Device-Specific Features

Navigator-500 Support

• Optimized camera controls
• Enhanced zoom functionality
• Improved audio handling
• Better performance

DigiLens Support

• Specialized UI adaptations
• Custom control layouts
• Optimized performance

State Management

• Uses GetX for reactive state management
• Manages call state, participant list, and UI controls
• Handles device-specific state changes

Error Handling

void handleException(e) {
  logInfo('Error: $e');
  // Error handling implementation
}

Dependencies

• get - State management
• hippo_web_rtc - WebRTC implementation
• onesignal_flutter - Push notifications
• permission_handler - Permission management
• uuid - ID generation
• wakelock - Screen wake lock

Styling

• Follow application theme
• Use consistent button styles
• Implement responsive layouts
• Handle different screen sizes
• Support dark/light modes