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Michael Ketchel
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May 11, 2023
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,155 @@ | ||
| import 'dart:async'; | ||
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| import 'package:audio_session/audio_session.dart'; | ||
| import 'package:flutter/cupertino.dart'; | ||
| import 'package:flutter_sound/flutter_sound.dart'; | ||
| import 'package:permission_handler/permission_handler.dart'; | ||
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| const int tSampleRate = 44000; | ||
| typedef _Fn = void Function(); | ||
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| class FlutterSoundProvider extends ChangeNotifier { | ||
| FlutterSoundPlayer? _mPlayer = FlutterSoundPlayer(); | ||
| FlutterSoundRecorder? _mRecorder = FlutterSoundRecorder(); | ||
| bool _mPlayerIsInited = false; | ||
| bool _mRecorderIsInited = false; | ||
| bool _mplaybackReady = false; | ||
| String? _mPath; | ||
| StreamSubscription? _mRecordingDataSubscription; | ||
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| bool get isInitialized => _mPlayerIsInited && _mRecorderIsInited; | ||
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| FlutterSoundProvider() { | ||
| // Be careful : openAudioSession return a Future. | ||
| // Do not access your FlutterSoundPlayer or FlutterSoundRecorder before the completion of the Future | ||
| // _mPlayer!.openPlayer().then((value) { | ||
| // _mPlayerIsInited = true; | ||
| // notifyListeners(); | ||
| // }); | ||
| // _openRecorder(); | ||
| } | ||
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| Future<void> initialize() async { | ||
| await _mPlayer!.openPlayer().then((value) { | ||
| _mPlayerIsInited = true; | ||
| notifyListeners(); | ||
| }); | ||
| await _openRecorder(); | ||
| } | ||
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| Future<void> _openRecorder() async { | ||
| var status = await Permission.microphone.request(); | ||
| if (status != PermissionStatus.granted) { | ||
| throw RecordingPermissionException('Microphone permission not granted'); | ||
| } | ||
| await _mRecorder!.openRecorder(); | ||
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| final session = await AudioSession.instance; | ||
| await session.configure(AudioSessionConfiguration( | ||
| avAudioSessionCategory: AVAudioSessionCategory.playAndRecord, | ||
| avAudioSessionCategoryOptions: | ||
| AVAudioSessionCategoryOptions.allowBluetooth | | ||
| AVAudioSessionCategoryOptions.defaultToSpeaker, | ||
| avAudioSessionMode: AVAudioSessionMode.spokenAudio, | ||
| avAudioSessionRouteSharingPolicy: | ||
| AVAudioSessionRouteSharingPolicy.defaultPolicy, | ||
| avAudioSessionSetActiveOptions: AVAudioSessionSetActiveOptions.none, | ||
| androidAudioAttributes: const AndroidAudioAttributes( | ||
| contentType: AndroidAudioContentType.speech, | ||
| flags: AndroidAudioFlags.none, | ||
| usage: AndroidAudioUsage.voiceCommunication, | ||
| ), | ||
| androidAudioFocusGainType: AndroidAudioFocusGainType.gain, | ||
| androidWillPauseWhenDucked: true, | ||
| )); | ||
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| _mRecorderIsInited = true; | ||
| notifyListeners(); | ||
| } | ||
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| @override | ||
| void dispose() { | ||
| // stopPlayer(); | ||
| _mPlayer!.closePlayer(); | ||
| _mPlayer = null; | ||
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| // stopRecorder(); | ||
| _mRecorder!.closeRecorder(); | ||
| _mRecorder = null; | ||
| super.dispose(); | ||
| } | ||
| // | ||
| // Future<void> stopRecorder() async { | ||
| // await _mRecorder!.stopRecorder(); | ||
| // if (_mRecordingDataSubscription != null) { | ||
| // await _mRecordingDataSubscription!.cancel(); | ||
| // _mRecordingDataSubscription = null; | ||
| // } | ||
| // _mplaybackReady = true; | ||
| // } | ||
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| get startRecorder => _mRecorder!.startRecorder; | ||
| get stopRecorder => _mRecorder!.stopRecorder; | ||
| // ---------------------- Here is the code to record to a Stream ------------ | ||
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| // Future<void> record() async { | ||
| // assert(_mRecorderIsInited && _mPlayer!.isStopped); | ||
| // var sink = await createFile(); | ||
| // var recordingDataController = StreamController<Food>(); | ||
| // _mRecordingDataSubscription = | ||
| // recordingDataController.stream.listen((buffer) { | ||
| // if (buffer is FoodData) { | ||
| // sink.add(buffer.data!); | ||
| // } | ||
| // }); | ||
| // await _mRecorder!.startRecorder( | ||
| // toStream: recordingDataController.sink, | ||
| // codec: Codec.pcm16, | ||
| // numChannels: 1, | ||
| // sampleRate: tSampleRate, | ||
| // ); | ||
| // setState(() {}); | ||
| // } | ||
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| // _Fn? getRecorderFn() { | ||
| // if (!_mRecorderIsInited || !_mPlayer!.isStopped) { | ||
| // return null; | ||
| // } | ||
| // return _mRecorder!.isStopped | ||
| // ? record | ||
| // : () { | ||
| // stopRecorder().then((value) => notifyListeners()); | ||
| // }; | ||
| // } | ||
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| void play() async { | ||
| assert(_mPlayerIsInited && | ||
| _mplaybackReady && | ||
| _mRecorder!.isStopped && | ||
| _mPlayer!.isStopped); | ||
| await _mPlayer!.startPlayer( | ||
| fromURI: _mPath, | ||
| sampleRate: tSampleRate, | ||
| codec: Codec.pcm16, | ||
| numChannels: 1, | ||
| whenFinished: () { | ||
| notifyListeners(); | ||
| }); // The readability of Dart is very special :-( | ||
| notifyListeners(); | ||
| } | ||
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| Future<void> stopPlayer() async { | ||
| await _mPlayer!.stopPlayer(); | ||
| } | ||
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| // _Fn? getPlaybackFn() { | ||
| // if (!_mPlayerIsInited || !_mplaybackReady || !_mRecorder!.isStopped) { | ||
| // return null; | ||
| // } | ||
| // return _mPlayer!.isStopped | ||
| // ? play | ||
| // : () { | ||
| // stopPlayer().then((value) => notifyListeners()); | ||
| // }; | ||
| // } | ||
| } |
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