115 lines
3.2 KiB
Dart
115 lines
3.2 KiB
Dart
import 'package:flutter_tts/flutter_tts.dart';
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import 'package:pj_supermarket_cloud/common/index.dart';
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// 文字转语音
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class TtsManage {
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static const _tag = "文字转语音";
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static const _iflytekEngine = "com.iflytek.speechcloud";
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static final FlutterTts _flutterTts = FlutterTts();
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static bool _isInitialized = false;
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static bool _isAvailable = false;
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static Future<void>? _initializing;
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/// 初始化 TTS。
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///
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/// 收银终端只使用讯飞引擎；未安装或初始化失败时直接禁用语音，
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/// 避免 TTS 插件异常阻断应用启动和收银流程。
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static Future<void> initialize() async {
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if (_isInitialized) return;
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if (_initializing != null) {
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await _initializing;
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return;
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}
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final initializing = _initialize();
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_initializing = initializing;
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try {
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await initializing;
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} finally {
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_initializing = null;
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}
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}
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static Future<void> _initialize() async {
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try {
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final engines = await _flutterTts.getEngines;
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final hasIflytekEngine = engines is List &&
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engines.any((engine) => engine.toString() == _iflytekEngine);
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if (!hasIflytekEngine) {
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logger.w("|$_tag|未安装讯飞TTS引擎，已禁用语音播报");
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return;
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}
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await _flutterTts.setEngine(_iflytekEngine);
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await _flutterTts.setLanguage("zh-CN");
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await _flutterTts.setVolume(1.0);
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await _flutterTts.setSpeechRate(0.95);
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await _flutterTts.setPitch(2.0);
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_isAvailable = true;
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} catch (e, stack) {
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logger.w("|$_tag|讯飞TTS初始化失败，已禁用语音播报error:|$e|stack:|$stack|");
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} finally {
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_isInitialized = true;
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}
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}
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/// 播放文本；讯飞 TTS 不可用时静默跳过。
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static Future<void> speak(String text) async {
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await initialize();
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if (!_isAvailable) return;
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try {
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await _flutterTts.speak(text, focus: true);
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} catch (e, stack) {
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logger.w("|$_tag|语音播放失败error:|$e|stack:|$stack|");
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}
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}
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// 停止播放
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static Future<void> stop() async {
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if (!_isAvailable) return;
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try {
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await _flutterTts.stop();
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} catch (e, stack) {
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logger.w("|$_tag|停止语音播放失败error:|$e|stack:|$stack|");
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}
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}
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// 释放资源
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static Future<void> dispose() async {
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await stop();
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}
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/// 将数字转换为中文读法（手机号码格式）
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/// 特别处理：1读为"幺"，其他数字正常读法
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static String numberToChineseReading(String number) {
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if (number.isEmpty) return "";
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// 数字到中文读法的映射
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const Map<String, String> digitToChinese = {
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'0': '零',
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'1': '幺', // 手机号中1读为"幺"
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'2': '二',
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'3': '三',
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'4': '四',
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'5': '五',
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'6': '六',
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'7': '七',
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'8': '八',
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'9': '九',
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};
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// 逐位转换
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StringBuffer result = StringBuffer();
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for (int i = 0; i < number.length; i++) {
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String digit = number[i];
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if (digitToChinese.containsKey(digit)) {
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result.write(digitToChinese[digit]);
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} else {
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// 如果不是数字，保持原样
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result.write(digit);
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}
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}
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return result.toString();
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}
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}
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