auto stop voice

example/lib/main.dart

@@ -10,11 +10,16 @@
 //
 
 import 'dart:async';
+import 'dart:io';
 import 'dart:math';
+
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
+import 'package:flutter_sound/flutter_sound.dart';
 import 'package:flutter_voice_processor/flutter_voice_processor.dart';
 import 'package:flutter_voice_processor_example/vu_meter_painter.dart';
+import 'package:path_provider/path_provider.dart';
+import 'package:record/record.dart';
 
 void main() {
   runApp(MyApp());
@@ -37,13 +42,23 @@ class _MyAppState extends State<MyApp> {
   bool _isProcessing = false;
   String? _errorMessage;
   VoiceProcessor? _voiceProcessor;
+  final record = AudioRecorder();
 
   @override
   void initState() {
     super.initState();
     _initVoiceProcessor();
+    _initRecorder();
+  }
+
+  @override
+  void dispose() {
+    record.dispose();
+    super.dispose();
   }
 
+  void _initRecorder() async {}
+
   void _initVoiceProcessor() async {
     _voiceProcessor = VoiceProcessor.instance;
   }
@@ -62,6 +77,19 @@ class _MyAppState extends State<MyApp> {
         setState(() {
           _isProcessing = isRecording!;
         });
+        final directory = await getApplicationDocumentsDirectory();
+        final path = directory.path;
+        final file = File('$path/file.wav');
+        // Start recording with flutter_sound
+        await record.start(
+          RecordConfig(
+            encoder: AudioEncoder.wav,
+            sampleRate: sampleRate,
+            bitRate: 96000,
+            numChannels: 1,
+          ),
+          path: file.path,
+        );
       } else {
         setState(() {
           _errorMessage = "Recording permission not granted";
@@ -85,6 +113,8 @@ class _MyAppState extends State<MyApp> {
 
     try {
       await _voiceProcessor?.stop();
+      // Stop recording with flutter_sound
+      await record.stop();
     } on PlatformException catch (ex) {
       setState(() {
         _errorMessage = "Failed to stop recorder: " + ex.toString();
@@ -118,8 +148,12 @@ class _MyAppState extends State<MyApp> {
     return normalizedValue.clamp(0.0, 1.0);
   }
 
+// Add a timer variable at the class level
+  Timer? _volumeCheckTimer;
+
   void _onFrame(List<int> frame) {
     double volumeLevel = _calculateVolumeLevel(frame);
+    print(volumeLevel);
     if (_volumeHistory.length == volumeHistoryCapacity) {
       _volumeHistory.removeAt(0);
     }
@@ -129,6 +163,19 @@ class _MyAppState extends State<MyApp> {
       _smoothedVolumeValue =
           _volumeHistory.reduce((a, b) => a + b) / _volumeHistory.length;
     });
+
+    // Check if volume is below the threshold
+    if (volumeLevel < 0.2) {
+      // If the timer is not running, start it
+      _volumeCheckTimer ??= Timer(Duration(seconds: 2), () {
+        // If the timer completes, stop the recording
+        _stopProcessing();
+      });
+    } else {
+      // If the volume is above the threshold, cancel the timer
+      _volumeCheckTimer?.cancel();
+      _volumeCheckTimer = null;
+    }
   }
 
   void _onError(VoiceProcessorException error) {
@@ -137,6 +184,29 @@ class _MyAppState extends State<MyApp> {
     });
   }
 
+  Future<void> _playAudio() async {
+    try {
+      // Assuming you're saving the file in the app's documents directory
+      final directory = await getApplicationDocumentsDirectory();
+      final path = directory.path;
+      final file = File('$path/file.wav');
+
+      if (await file.exists()) {
+        final _recorder = FlutterSound();
+        await _recorder.thePlayer.openPlayer();
+        await _recorder.thePlayer.startPlayer(fromURI: file.path);
+      } else {
+        setState(() {
+          _errorMessage = "No audio file found to play.";
+        });
+      }
+    } on PlatformException catch (ex) {
+      setState(() {
+        _errorMessage = "Failed to play audio: " + ex.toString();
+      });
+    }
+  }
+
   Color picoBlue = Color.fromRGBO(55, 125, 255, 1);
 
   @override
@@ -149,12 +219,21 @@ class _MyAppState extends State<MyApp> {
         body: Column(children: [
           buildVuMeter(context),
           buildStartButton(context),
+          buildPlayButton(context), // Add this line
+
           buildErrorMessage(context)
         ]),
       ),
     );
   }
 
+  buildPlayButton(BuildContext context) {
+    return ElevatedButton(
+      onPressed: _isProcessing || _errorMessage != null ? null : _playAudio,
+      child: Text("Play", style: TextStyle(fontSize: 20)),
+    );
+  }
+
   buildVuMeter(BuildContext context) {
     return Expanded(
         flex: 2,
@@ -171,7 +250,7 @@ class _MyAppState extends State<MyApp> {
 
   buildStartButton(BuildContext context) {
     final ButtonStyle buttonStyle = ElevatedButton.styleFrom(
-        primary: picoBlue,
+        backgroundColor: picoBlue,
         shape: CircleBorder(),
         textStyle: TextStyle(color: Colors.white));