56 lines
1.6 KiB
Dart
56 lines
1.6 KiB
Dart
import 'package:flutter_tts/flutter_tts.dart';
|
|
|
|
typedef TtsCompletionCallback = void Function();
|
|
typedef TtsErrorCallback = void Function(String error);
|
|
|
|
class TtsEngineManager {
|
|
static final TtsEngineManager _instance = TtsEngineManager._internal();
|
|
factory TtsEngineManager() => _instance;
|
|
TtsEngineManager._internal();
|
|
|
|
final FlutterTts _flutterTts = FlutterTts();
|
|
|
|
TtsCompletionCallback? onComplete;
|
|
TtsErrorCallback? onError;
|
|
|
|
bool _isInitialized = false;
|
|
|
|
Future<void> init({String language = 'zh-CN', double speechRate = 0.5}) async {
|
|
if (_isInitialized) return;
|
|
await _flutterTts.setLanguage(language);
|
|
await _flutterTts.setSpeechRate(speechRate);
|
|
_flutterTts.setCompletionHandler(() {
|
|
if (onComplete != null) onComplete!();
|
|
});
|
|
_flutterTts.setErrorHandler((msg) {
|
|
if (onError != null) onError!(msg);
|
|
});
|
|
_isInitialized = true;
|
|
}
|
|
|
|
Future<void> speak(String text, {String? language, double? speechRate}) async {
|
|
if (!_isInitialized) {
|
|
await init(language: language ?? 'zh-CN', speechRate: speechRate ?? 0.5);
|
|
}
|
|
if (language != null) await _flutterTts.setLanguage(language);
|
|
if (speechRate != null) await _flutterTts.setSpeechRate(speechRate);
|
|
await _flutterTts.speak(text);
|
|
}
|
|
|
|
Future<void> stop() async {
|
|
await _flutterTts.stop();
|
|
}
|
|
|
|
Future<void> setLanguage(String language) async {
|
|
await _flutterTts.setLanguage(language);
|
|
}
|
|
|
|
Future<void> setSpeechRate(double rate) async {
|
|
await _flutterTts.setSpeechRate(rate);
|
|
}
|
|
|
|
void dispose() {
|
|
_flutterTts.stop();
|
|
_isInitialized = false;
|
|
}
|
|
} |