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fix(voice-call): Improve async handling and state management

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Refactor voice call service to handle asynchronous operations more
precisely. Update method signatures to be async, use unawaited for
non-blocking calls, and ensure proper state reset between sessions.
Improve error handling and resource management for voice input and
text-to-speech services.
This commit is contained in:
cogwheel
2026-02-05 17:53:09 +05:30
parent c75898546a
commit dc2495dca0
5 changed files with 44 additions and 15 deletions
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24
lib/features/chat/services/voice_call_service.dart
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@@ -395,7 +395,7 @@ class VoiceCallService {
_activeAssistantMessageId = null;
_responseCompleted = false;
_listeningSuspendedForSpeech = false;
_resetServerAudio(stopPlayback: true);
await _resetServerAudio(stopPlayback: true);
if (_pauseReasons.isNotEmpty) {
_listeningPaused = true;
@@ -584,7 +584,11 @@ class VoiceCallService {
_speechQueue.clear();
_enqueuedSentenceCount = 0;
_responseCompleted = false;
_resetServerAudio(stopPlayback: true);
// Fire-and-forget: This is a synchronous event handler where blocking
// would delay socket event processing. The audio player stop is fast
// and race conditions are acceptable here since new playback will
// wait for this session to complete anyway.
unawaited(_resetServerAudio(stopPlayback: true));
if (_isSpeaking) {
_isSpeaking = false;
unawaited(_tts.stop());
@@ -749,14 +753,14 @@ class VoiceCallService {
_maybeResumeListeningAfterSpeech();
}
void _resetServerAudio({bool stopPlayback = false}) {
Future<void> _resetServerAudio({bool stopPlayback = false}) async {
_serverAudioBuffer.clear();
_pendingServerAudioFetches = 0;
_serverAudioSession++;
_nextServerChunkId = 0;
_nextServerPlaybackId = 0;
if (stopPlayback) {
unawaited(_serverAudioPlayer.stop());
await _serverAudioPlayer.stop();
_isSpeaking = false;
}
_serverPipelineActive = false;
@@ -819,7 +823,7 @@ class VoiceCallService {
if (_isDisposed) return;
_isSpeaking = false;
_speechQueue.clear();
_resetServerAudio(stopPlayback: true);
unawaited(_resetServerAudio(stopPlayback: true));
_listeningSuspendedForSpeech = false;
_updateState(VoiceCallState.error);
// Try to recover by restarting listening
@@ -865,7 +869,7 @@ class VoiceCallService {
_listeningSuspendedForSpeech = false;
_activeAssistantMessageId = null;
_isSpeaking = false;
_resetServerAudio(stopPlayback: true);
await _resetServerAudio(stopPlayback: true);
_updateState(VoiceCallState.disconnected);
}
@@ -911,7 +915,7 @@ class VoiceCallService {
_enqueuedSentenceCount = 0;
_responseCompleted = false;
_listeningSuspendedForSpeech = false;
_resetServerAudio(stopPlayback: true);
await _resetServerAudio(stopPlayback: true);
await _tts.stop();
_isSpeaking = false;
_accumulatedResponse = '';
@@ -985,7 +989,7 @@ class VoiceCallService {
_enqueuedSentenceCount = 0;
_responseCompleted = false;
_listeningSuspendedForSpeech = false;
_resetServerAudio(stopPlayback: true);
unawaited(_resetServerAudio(stopPlayback: true));
pauseListening(reason: VoiceCallPauseReason.mute);
} else {
resumeListening(reason: VoiceCallPauseReason.mute);
@@ -1006,7 +1010,7 @@ class VoiceCallService {
_callKitEventSubscription = null;
_socketSubscription?.dispose();
_voiceInput.dispose();
await _voiceInput.dispose();
await _tts.dispose();
await _serverAudioStateSub?.cancel();
await _serverAudioPlayer.dispose();
@@ -1029,7 +1033,7 @@ class VoiceCallService {
}
}
@Riverpod(keepAlive: true)
@riverpod
VoiceCallService voiceCallService(Ref ref) {
final voiceInput = ref.watch(voiceInputServiceProvider);
final api = ref.watch(apiServiceProvider);