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97 lines
2.6 KiB
97 lines
2.6 KiB
import 'dart:async';
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import 'package:flutter/services.dart';
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/// 讯飞 SparkChain。事件从 [events] 来，方法调用只返回启动码。
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class SparkChain {
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static const _method = MethodChannel('sparkchain');
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static const _events = EventChannel('sparkchain/events');
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static Stream<Map<String, dynamic>>? _stream;
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static Stream<Map<String, dynamic>> get events {
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_stream ??= _events.receiveBroadcastStream().map((event) {
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final raw = Map<Object?, Object?>.from(event as Map);
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return raw.map((key, value) => MapEntry(key.toString(), value));
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});
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return _stream!;
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}
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/// 0 成功。不打印密钥。
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static Future<int> init({
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required String appId,
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required String apiKey,
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required String apiSecret,
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int apiType = 1,
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}) async {
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final code = await _method.invokeMethod<int>('init', {
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'appId': appId,
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'apiKey': apiKey,
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'apiSecret': apiSecret,
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'apiType': apiType,
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});
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return code ?? -1;
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}
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static Future<int> translate({
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required String id,
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required String from,
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required String to,
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required String text,
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}) async {
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final code = await _method.invokeMethod<int>('translate', {
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'id': id,
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'from': from,
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'to': to,
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'text': text,
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});
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return code ?? -1;
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}
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static Future<int> speak({
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required String id,
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required String lang,
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required String text,
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String? voice,
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}) async {
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final code = await _method.invokeMethod<int>('speak', {
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'id': id,
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'lang': lang,
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'text': text,
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if (voice != null) 'voice': voice,
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});
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return code ?? -1;
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}
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/// [lang] 用短码 zh / en / ga。ga 走实时转写，其余走听写。
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static Future<int> startListen({
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required String id,
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required String lang,
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}) async {
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final code = await _method.invokeMethod<int>('startListen', {
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'id': id,
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'lang': lang,
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});
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return code ?? -1;
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}
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static Future<int> write(Uint8List pcm) async {
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final code = await _method.invokeMethod<int>('write', {'pcm': pcm});
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return code ?? -1;
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}
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static Future<void> stopListen() async {
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await _method.invokeMethod<int>('stopListen');
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}
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}
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/// 把界面上的 BCP-47 收成插件认的短码。不认识的原样返回，让原生按失败处理。
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String sparkChainShortCode(String code) {
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final raw = code.trim().toLowerCase().replaceAll('_', '-');
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if (raw.isEmpty) return raw;
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if (raw == 'ga' || raw.startsWith('ga-')) return 'ga';
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if (raw == 'zh' || raw.startsWith('zh-')) return 'zh';
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if (raw == 'en' || raw.startsWith('en-')) return 'en';
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final dash = raw.indexOf('-');
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return dash < 0 ? raw : raw.substring(0, dash);
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}
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