flutter_audio_toolkit 1.0.0
flutter_audio_toolkit: ^1.0.0 copied to clipboard
Professional audio processing plugin with native M4A/AAC conversion, precise audio trimming, waveform visualization, and comprehensive noise analysis for cross-platform Flutter applications
import 'package:flutter/material.dart';
import 'dart:async';
import 'dart:io';
import 'package:flutter/foundation.dart';
import 'package:flutter/services.dart';
import 'package:permission_handler/permission_handler.dart';
import 'package:provider/provider.dart';
// Import our modular components
import 'models/app_state.dart';
import 'services/audio_service.dart';
import 'widgets/file_picker_widget.dart';
import 'widgets/audio_info_widget.dart';
import 'widgets/conversion_widget.dart';
import 'widgets/waveform_widget.dart';
import 'widgets/trimming_widget.dart';
import 'widgets/noise_detection_widget.dart';
import 'widgets/audio_player_demo_widget.dart';
void main() {
WidgetsFlutterBinding.ensureInitialized();
runApp(const MyApp());
}
class MyApp extends StatelessWidget {
const MyApp({super.key});
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Audio Toolkit Demo',
theme: ThemeData(primarySwatch: Colors.blue),
home: ChangeNotifierProvider(
create: (context) => AppState(),
child: const AudioToolkitHome(),
),
);
}
}
class AudioToolkitHome extends StatefulWidget {
const AudioToolkitHome({super.key});
@override
State<AudioToolkitHome> createState() => _AudioToolkitHomeState();
}
class _AudioToolkitHomeState extends State<AudioToolkitHome> {
bool _permissionsInitialized = false;
@override
void initState() {
super.initState();
WidgetsBinding.instance.addPostFrameCallback((_) {
_initializeApp();
});
}
Future<void> _initializeApp() async {
if (kDebugMode) {
print('Initializing app...');
}
final appState = Provider.of<AppState>(context, listen: false);
// Initialize default URL
appState.urlController.text =
'https://ro-prod-content.blr1.cdn.digitaloceanspaces.com/dolby/previews/fr_marchingband_a.mp4';
// Request permissions first
await _requestPermissions();
// Then initialize platform state
await _initPlatformState(appState);
if (kDebugMode) {
print('App initialization complete');
}
}
Future<void> _requestPermissions() async {
if (_permissionsInitialized) {
if (kDebugMode) {
print('Permissions already initialized');
}
return;
}
if (kDebugMode) {
print('Requesting ALL permissions aggressively...');
}
if (Platform.isAndroid) {
if (kDebugMode) {
print(
'Android platform detected - requesting comprehensive permissions',
);
}
try {
// Get Android API level for targeted permission requests
final androidInfo = Platform.operatingSystemVersion;
if (kDebugMode) {
print('Android version info: $androidInfo');
}
// Request all relevant permissions simultaneously for better user experience
final permissionsToRequest = <Permission>[];
// Audio/Media permissions
permissionsToRequest.add(Permission.audio);
permissionsToRequest.add(Permission.storage);
// Microphone for recording features
permissionsToRequest.add(Permission.microphone);
// External storage management (for Android 11+)
permissionsToRequest.add(Permission.manageExternalStorage);
// Notification permission (sometimes needed for media operations)
permissionsToRequest.add(Permission.notification);
if (kDebugMode) {
print('Requesting ${permissionsToRequest.length} permissions...');
}
// Request all permissions at once
final results = await permissionsToRequest.request();
if (kDebugMode) {
print('Permission results:');
for (final entry in results.entries) {
print(' ${entry.key}: ${entry.value}');
}
}
// Check specific critical permissions
final audioStatus = await Permission.audio.status;
final storageStatus = await Permission.storage.status;
if (kDebugMode) {
print('Critical permission status:');
print(' Audio: $audioStatus');
print(' Storage: $storageStatus');
}
// If critical permissions are denied, show user guidance
if (audioStatus.isPermanentlyDenied ||
storageStatus.isPermanentlyDenied) {
if (kDebugMode) {
print(
'Some permissions permanently denied - user should check app settings',
);
}
}
} catch (e) {
if (kDebugMode) {
print('Error requesting permissions: $e');
print(
'Continuing with app initialization - some features may be limited',
);
}
}
} else if (Platform.isIOS) {
// iOS permissions are requested as needed
if (kDebugMode) {
print('iOS platform - permissions will be requested as needed');
}
}
_permissionsInitialized = true;
if (kDebugMode) {
print('Permission initialization completed');
}
}
Future<void> _initPlatformState(AppState appState) async {
if (kDebugMode) {
print('Initializing platform state...');
}
try {
await AudioService.getPlatformVersion(appState);
if (kDebugMode) {
print('Platform version: ${appState.platformVersion}');
}
} on PlatformException catch (e) {
if (kDebugMode) {
print('Failed to get platform version: $e');
}
appState.platformVersion = 'Failed to get platform version.';
}
}
void _showError(String message) {
if (!mounted) return;
if (kDebugMode) {
print('ERROR: $message');
}
ScaffoldMessenger.of(context).showSnackBar(
SnackBar(
content: Text(message),
backgroundColor: Colors.red,
duration: const Duration(seconds: 3),
),
);
}
void _onStateChanged() {
if (mounted) {
setState(() {});
}
}
@override
Widget build(BuildContext context) {
return Consumer<AppState>(
builder: (context, appState, child) {
return Scaffold(
appBar: AppBar(
title: const Text('Audio Converter & Waveform'),
backgroundColor: Colors.blue,
),
body: SingleChildScrollView(
padding: const EdgeInsets.all(16.0),
child: Column(
crossAxisAlignment: CrossAxisAlignment.stretch,
children: [
// File Picker and URL Input Section
FilePickerWidget(
appState: appState,
onError: () => _showError('Failed to select or process file'),
),
// Audio Information Section
AudioInfoWidget(appState: appState),
// Audio Conversion Section
if (appState.selectedFilePath != null) ...[
const SizedBox(height: 16),
ConversionWidget(
appState: appState,
onStateChanged: _onStateChanged,
),
// Waveform Extraction Section
const SizedBox(height: 16),
WaveformWidget(
appState: appState,
onStateChanged: _onStateChanged,
), // Audio Trimming Section const SizedBox(height: 16),
TrimmingWidget(
appState: appState,
onStateChanged: _onStateChanged,
), // Noise Detection & Analysis Section
const SizedBox(height: 16),
NoiseDetectionWidget(
appState: appState,
onStateChanged: _onStateChanged,
), // Audio Player Demo Section
const SizedBox(height: 16),
SizedBox(
height: 600, // Fixed height for tab view
child: AudioPlayerDemoWidget(appState: appState),
),
],
],
),
),
);
},
);
}
}