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refactor: used existing AudioJack in soundmeter #2748

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Merged
merged 3 commits into from
Jun 21, 2025
Merged

refactor: used existing AudioJack in soundmeter #2748

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e4e6213
Used existing AudioJack
Yugesh-Kumar-S Jun 19, 2025
a8e7aa3
fix: add null check for _audioJack
Yugesh-Kumar-S Jun 19, 2025
8087f19
Merge branch 'flutter' into soundmeter-fix
Yugesh-Kumar-S Jun 20, 2025
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42 changes: 21 additions & 21 deletions lib/providers/soundmeter_state_provider.dart
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Original file line number Diff line number Diff line change
Expand Up @@ -2,17 +2,18 @@ import 'dart:async';
import 'dart:math';
import 'package:fl_chart/fl_chart.dart';
import 'package:pslab/others/logger_service.dart';
import 'package:flutter_audio_capture/flutter_audio_capture.dart';
import 'package:flutter/foundation.dart';
import 'package:pslab/constants.dart';
import 'package:pslab/others/audio_jack.dart';

class SoundMeterStateProvider extends ChangeNotifier {
double _currentDb = 0.0;
Timer? _timeTimer;
Timer? _audioTimer;
final List<double> _dbData = [];
final List<double> _timeData = [];
final List<FlSpot> dbChartData = [];
FlutterAudioCapture? _audioCapture;
AudioJack? _audioJack;
double _startTime = 0;
double _currentTime = 0;
final int _maxLength = 50;
Expand All @@ -23,37 +24,34 @@ class SoundMeterStateProvider extends ChangeNotifier {

void initializeSensors() async {
try {
_audioCapture = FlutterAudioCapture();

await _audioCapture!.init();
_audioJack = AudioJack();
await _audioJack!.initialize();
await _audioJack!.start();

_startTime = DateTime.now().millisecondsSinceEpoch / 1000.0;

_timeTimer = Timer.periodic(const Duration(seconds: 1), (timer) {
_currentTime =
(DateTime.now().millisecondsSinceEpoch / 1000.0) - _startTime;
_updateData();
notifyListeners();
});

await _audioCapture!.start(
(Float32List audioData) {
_currentDb = _calculateDecibels(audioData);
notifyListeners();
},
(error) {
logger.e(
"$soundMeterError $error",
);
},
sampleRate: 44100,
bufferSize: 4096,
);
_audioTimer = Timer.periodic(const Duration(milliseconds: 100), (timer) {
if (_audioJack != null && _audioJack!.isListening()) {
final audioData = _audioJack!.read();
if (audioData.isNotEmpty) {
_currentDb = _calculateDecibels(audioData);
notifyListeners();
}
}
});
} catch (e) {
logger.e("$soundMeterInitialError $e");
}
}

double _calculateDecibels(Float32List audioData) {
double _calculateDecibels(List<double> audioData) {
if (audioData.isEmpty) return 0.0;

double sum = 0;
Expand All @@ -71,9 +69,11 @@ class SoundMeterStateProvider extends ChangeNotifier {
return dbSPL.clamp(20.0, 120.0);
}

void disposeSensors() {
_audioCapture?.stop();
void disposeSensors() async {
_timeTimer?.cancel();
_audioTimer?.cancel();
await _audioJack?.close();
_audioJack = null;
}

@override
Expand Down