azure_speech_recognition_nic 0.0.4

This package allows you to quickly set up Microsoft Azure Translator and get startedwith translation.

example/lib/main.dart

import 'dart:io';
import 'dart:typed_data';

import 'package:azure_speech_recognition_nic/azure_speech_recognition_nic.dart';
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:flutter_dotenv/flutter_dotenv.dart';

import 'audio_input.dart';

void main() async {
  await dotenv.load(fileName: ".env");
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({super.key});

  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: const MyHomePage(title: 'Flutter Demo Home Page'),
    );
  }
}

class MyHomePage extends StatefulWidget {
  const MyHomePage({super.key, required this.title});

  final String title;

  @override
  State<MyHomePage> createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  // int _counter = 0;
  String? _translatedText;
  final AudioInput audioInput = AudioInput();
  bool isRecording = false;

  @override
  void initState() {
    super.initState();
    debugPrint('[xxx] initState()');
    audioInput.init();
    if (dotenv.env['MICROSOFT_AZURE_SUBSCRIPTION_KEY'] != null && dotenv.env['MICROSOFT_AZURE_SUBSCRIPTION_REGION'] != null) {
      AzureSpeechRecognition.initialize(dotenv.env['MICROSOFT_AZURE_SUBSCRIPTION_KEY']!, dotenv.env['MICROSOFT_AZURE_SUBSCRIPTION_REGION']!);
      // translate();
    }
  }

  Future<void> translate(String? path) async {
    if (path == null) {
      debugPrint("[xxx]path is null");
      return;
    }
    File file = File(path);
    debugPrint('[xxx]translate is called...');
    // Uint8List audioBytes = await rootBundle.load('assets/audio/test.wav');
    // Uint8List audioBytes = await rootBundle.load('assets/audio/test1.wav').then((value) => value.buffer.asUint8List());
    Uint8List audioBytes = await file.readAsBytes();
    _translatedText = await AzureSpeechRecognition.instance.recognizeAudio(audioBytes);

    if (_translatedText != null) {
      debugPrint('[xxx]received translation from package..');
      debugPrint('[xxx]translated: $_translatedText');
    }
    setState(() {});
  }

  // 開始錄音
  Future<void> startRecording() async {
    try {
      await audioInput.startRecording();
      setState(() {
        isRecording = true;
      });
    } catch (err) {
      debugPrint("[xxx]_startRecording() error: ${err.toString()}");
    }
  }

  // 停止錄音
  Future<void> stopRecording() async {
    try {
      final path = await audioInput.stopRecording();
      setState(() {
        isRecording = false;
      });
      if (path != null) {
        debugPrint("[xxx]path: $path");
        translate(path);
      }
    } catch (err) {
      debugPrint("_stopRecording() error: ${err.toString()}");
    }
  }

  @override
  Widget build(BuildContext context) {
    debugPrint("[xxx]build() isRecording: $isRecording");
    return Scaffold(
      appBar: AppBar(
        title: Text(widget.title),
      ),
      floatingActionButton: FloatingActionButton(
        onPressed: isRecording ? ()=>stopRecording():()=>startRecording(),
        child: Icon(isRecording ? Icons.mic_off:Icons.mic),
      ),
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: <Widget>[
            const Text(
              'translated Text:',
            ),
            Text(
              _translatedText ?? '',
              style: Theme.of(context).textTheme.headlineMedium,
            ),
          ],
        ),
      ),
      // This trailing comma makes auto-formatting nicer for build methods.
    );
  }
}