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Fix Audio Subscription Cancellation and Stream Handling #151

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Fix Audio Subscription Cancellation and Stream Handling #151

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117525b
Update main.dart
myfeng10 Mar 18, 2025
4017184
Update audio.dart
myfeng10 Mar 18, 2025
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3 changes: 3 additions & 0 deletions evi-flutter-example/audio/lib/audio.dart
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Original file line number Diff line number Diff line change
Expand Up @@ -22,6 +22,9 @@ class Audio {
(event) {
if (event is Map) {
if (event['type'] == 'audio') {
if (_audioController.isClosed) {
return;
}
final audioData = event['data'] as String;
_audioController.add(audioData);
} else if (event['type'] == 'error') {
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4 changes: 3 additions & 1 deletion evi-flutter-example/lib/main.dart
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Expand Up @@ -138,6 +138,7 @@ class _MyHomePageState extends State<MyHomePage> {
bool _isConnected = false;
bool _isMuted = false;
var chatEntries = <ChatEntry>[];
StreamSubscription<String>? _audioSubscription;

// EVI sends back transcripts of both the user's speech and the assistants speech, along
// with an analysis of the emotional content of the speech. This method takes
Expand Down Expand Up @@ -331,7 +332,7 @@ class _MyHomePageState extends State<MyHomePage> {
void _startRecording() async {
await _audio.startRecording();

_audio.audioStream.listen((data) async {
_audioSubscription = _audio.audioStream.listen((data) async {
_sendAudio(data);
});
_audio.audioStream.handleError((error) {
Expand All @@ -341,6 +342,7 @@ class _MyHomePageState extends State<MyHomePage> {

void _stopRecording() {
_audio.stopRecording();
_audioSubscription?.cancel();
}

void _unmuteInput() {
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