feat: added csv functionalities in soundmeter screen.

lib/l10n/app_en.arb

@@ -341,5 +341,7 @@
     "gyroscopeHighLimitHint" : "Please provide the maximum limit of lux value to be recorded (0 rad/s to 1000 rad/s)",
     "accelerometerConfigurations" : "Accelerometer Configurations",
     "accelerometerUpdatePeriodHint" : "Please provide time interval at which data will be updated",
-    "accelerometerHighLimitHint" : "Please provide the maximum limit of lux value to be recorded"
+    "accelerometerHighLimitHint" : "Please provide the maximum limit of lux value to be recorded",
+    "soundmeterSnackBarMessage" : "Unable to access sound sensor",
+    "dangerous" : "Dangerous"
 }

lib/l10n/app_localizations.dart

@@ -2145,6 +2145,18 @@ abstract class AppLocalizations {
   /// In en, this message translates to:
   /// **'Please provide the maximum limit of lux value to be recorded'**
   String get accelerometerHighLimitHint;
+
+  /// No description provided for @soundmeterSnackBarMessage.
+  ///
+  /// In en, this message translates to:
+  /// **'Unable to access sound sensor'**
+  String get soundmeterSnackBarMessage;
+
+  /// No description provided for @dangerous.
+  ///
+  /// In en, this message translates to:
+  /// **'Dangerous'**
+  String get dangerous;
 }
 
 class _AppLocalizationsDelegate

lib/l10n/app_localizations_en.dart

@@ -1069,6 +1069,7 @@ class AppLocalizationsEn extends AppLocalizations {
   @override
   String get fileDeleted => 'File deleted';
 
+  @override
   String get soundmeterConfig => 'Soundmeter Configurations';
 
   @override
@@ -1099,4 +1100,10 @@ class AppLocalizationsEn extends AppLocalizations {
   @override
   String get accelerometerHighLimitHint =>
       'Please provide the maximum limit of lux value to be recorded';
+
+  @override
+  String get soundmeterSnackBarMessage => 'Unable to access sound sensor';
+
+  @override
+  String get dangerous => 'Dangerous';
 }

lib/providers/soundmeter_state_provider.dart

@@ -1,6 +1,7 @@
 import 'dart:async';
 import 'dart:math';
 import 'package:fl_chart/fl_chart.dart';
+import 'package:intl/intl.dart';
 import 'package:pslab/l10n/app_localizations.dart';
 import 'package:pslab/others/logger_service.dart';
 import 'package:flutter/foundation.dart';
@@ -18,13 +19,21 @@ class SoundMeterStateProvider extends ChangeNotifier {
   AudioJack? _audioJack;
   double _startTime = 0;
   double _currentTime = 0;
-  final int _maxLength = 50;
+  final int _chartMaxLength = 50;
   double _dbMin = 0;
   double _dbMax = 0;
   double _dbSum = 0;
   int _dataCount = 0;
+  bool _isRecording = false;
+  List<List<dynamic>> _recordedData = [];
+  double _recordingStartTime = 0.0;
+  bool get isRecording => _isRecording;
+
+  Function(String)? onSensorError;
+
+  void initializeSensors({Function(String)? onError}) async {
+    onSensorError = onError;
 
-  void initializeSensors() async {
     try {
       _audioJack = AudioJack();
       await _audioJack!.initialize();
@@ -50,9 +59,15 @@ class SoundMeterStateProvider extends ChangeNotifier {
       });
     } catch (e) {
       logger.e("${appLocalizations.soundMeterInitialError} $e");
+      _handleSensorError(e);
     }
   }
 
+  void _handleSensorError(dynamic error) {
+    onSensorError?.call(appLocalizations.soundmeterSnackBarMessage);
+    logger.e("${appLocalizations.soundMeterInitialError} $error");
+  }
+
   double _calculateDecibels(List<double> audioData) {
     if (audioData.isEmpty) return 0.0;
 
@@ -87,11 +102,21 @@ class SoundMeterStateProvider extends ChangeNotifier {
   void _updateData() {
     final db = _currentDb;
     final time = _currentTime;
+    if (_isRecording) {
+      final relativeTime = time - _recordingStartTime;
+      final now = DateTime.now();
+      final dateFormat = DateFormat('yyyy-MM-dd HH:mm:ss.SSS');
+      _recordedData.add([
+        dateFormat.format(now),
+        relativeTime.toStringAsFixed(2),
+        db.toStringAsFixed(2),
+      ]);
+    }
     _dbData.add(db);
     _timeData.add(time);
     _dbSum += db;
     _dataCount++;
-    if (_dbData.length > _maxLength) {
+    if (_dbData.length > _chartMaxLength) {
       final removedValue = _dbData.removeAt(0);
       _timeData.removeAt(0);
       _dbSum -= removedValue;
@@ -108,6 +133,19 @@ class SoundMeterStateProvider extends ChangeNotifier {
     notifyListeners();
   }
 
+  void startRecording() {
+    _isRecording = true;
+    _recordingStartTime = _currentTime;
+    _recordedData = [];
+    notifyListeners();
+  }
+
+  List<List<dynamic>> stopRecording() {
+    _isRecording = false;
+    notifyListeners();
+    return _recordedData;
+  }
+
   double getCurrentDb() => _currentDb;
   double getMinDb() => _dbMin;
   double getMaxDb() => _dbMax;