flutter_sound 1.7.0 
flutter_sound: ^1.7.0 copied to clipboard
tau.canardoux.xyzFlutter plugin that relates to sound like audio and recorder.
import 'dart:io';
import 'dart:typed_data' show Uint8List;
import 'package:flutter/material.dart';
import 'package:intl/intl.dart' show DateFormat;
import 'package:intl/date_symbol_data_local.dart';
import 'dart:async';
import 'package:flutter_sound/flutter_sound.dart';
import 'package:flutter_sound/android_encoder.dart';
void main() {
runApp(new MyApp());
}
class MyApp extends StatefulWidget {
@override
_MyAppState createState() => new _MyAppState();
}
class _MyAppState extends State<MyApp> {
bool _isRecording = false;
String _path;
// bool _isPlaying = false;
StreamSubscription _recorderSubscription;
StreamSubscription _dbPeakSubscription;
StreamSubscription _playerSubscription;
FlutterSound flutterSound;
String _recorderTxt = '00:00:00';
String _playerTxt = '00:00:00';
double _dbLevel;
double sliderCurrentPosition = 0.0;
double maxDuration = 1.0;
int _playFromBuffer = 0;
t_CODEC _codec = t_CODEC.CODEC_AAC;
@override
void initState() {
super.initState();
flutterSound = new FlutterSound();
flutterSound.setSubscriptionDuration(0.01);
flutterSound.setDbPeakLevelUpdate(0.8);
flutterSound.setDbLevelEnabled(true);
initializeDateFormatting();
}
static const List<String> paths =
[
'sound.aac', // DEFAULT
'sound.aac', // CODEC_AAC
'sound.opus', // CODEC_OPUS
'sound.caf', // CODEC_CAF_OPUS
'sound.mp3', // CODEC_MP3
'sound.ogg', // CODEC_VORBIS
'sound.wav', // CODEC_PCM
];
void startRecorder() async{
try {
String path = await flutterSound.startRecorder
(
paths[_codec.index],
codec: _codec,
sampleRate: 16000,
bitRate: 16000,
numChannels: 1,
//androidEncoder: AndroidEncoder.AAC, // Kept for ascendant compatibility. But it conflits with "codec:" parameter
androidAudioSource: AndroidAudioSource.MIC,
);
print('startRecorder: $path');
_recorderSubscription = flutterSound.onRecorderStateChanged.listen((e) {
DateTime date = new DateTime.fromMillisecondsSinceEpoch(
e.currentPosition.toInt(),
isUtc: true);
String txt = DateFormat('mm:ss:SS', 'en_GB').format(date);
this.setState(() {
this._recorderTxt = txt.substring(0, 8);
});
});
_dbPeakSubscription =
flutterSound.onRecorderDbPeakChanged.listen((value) {
print("got update -> $value");
setState(() {
this._dbLevel = value;
});
});
this.setState(() {
this._isRecording = true;
this._path = path;
});
} catch (err) {
print('startRecorder error: $err');
}
}
void stopRecorder() async{
try {
String result = await flutterSound.stopRecorder();
print('stopRecorder: $result');
if (_recorderSubscription != null) {
_recorderSubscription.cancel();
_recorderSubscription = null;
}
if (_dbPeakSubscription != null) {
_dbPeakSubscription.cancel();
_dbPeakSubscription = null;
}
this.setState(() {
this._isRecording = false;
});
} catch (err) {
print('stopRecorder error: $err');
}
}
Future <Uint8List> makeBuffer(String path) async
{
try
{
File file = File(path);
file.openRead();
var contents = await file.readAsBytes ();
print ('The file is ${contents.length} bytes long.');
return contents;
} catch (e)
{
print(e);
return null;
}
}
void startPlayer() async{
try {
String path = null;
if (_playFromBuffer == 0) { // Do we want to play from buffer or from file ?
path = await flutterSound.startPlayer(this._path); // From file
} else {
Uint8List buffer = await makeBuffer(this._path);
if (buffer != null)
path = await flutterSound.startPlayerFromBuffer(buffer); // From buffer
}
if (path == null) {
print ('Error starting player');
return;
}
print('startPlayer: $path');
await flutterSound.setVolume(1.0);
_playerSubscription = flutterSound.onPlayerStateChanged.listen((e) {
if (e != null) {
sliderCurrentPosition = e.currentPosition;
maxDuration = e.duration;
DateTime date = new DateTime.fromMillisecondsSinceEpoch(
e.currentPosition.toInt(),
isUtc: true);
String txt = DateFormat('mm:ss:SS', 'en_GB').format(date);
this.setState(() {
//this._isPlaying = true;
this._playerTxt = txt.substring(0, 8);
});
}
});
} catch (err) {
print('error: $err');
}
}
void stopPlayer() async{
try {
String result = await flutterSound.stopPlayer();
print('stopPlayer: $result');
if (_playerSubscription != null) {
_playerSubscription.cancel();
_playerSubscription = null;
}
this.setState(() {
//this._isPlaying = false;
});
} catch (err) {
print('error: $err');
}
}
void pausePlayer() async{
String result = await flutterSound.pausePlayer();
print('pausePlayer: $result');
}
void resumePlayer() async{
String result = await flutterSound.resumePlayer();
print('resumePlayer: $result');
}
void seekToPlayer(int milliSecs) async{
String result = await flutterSound.seekToPlayer(milliSecs);
print('seekToPlayer: $result');
}
@override
Widget build(BuildContext context) {
return MaterialApp(
home: Scaffold(
appBar: AppBar(
title: const Text('Flutter Sound'),
),
body: ListView(
children: <Widget>[
Visibility(
visible: (!Platform.isAndroid) ,
child: Container
(
color: Color(0xFFC0C0C0),
child: Row
(
children:
[
Radio
(
value: t_CODEC.CODEC_AAC,
groupValue: _codec,
onChanged: (radioBtn)
{
setState
(() {_codec = radioBtn;});
},
),
Text('AAC'),
Radio
(
value: t_CODEC.CODEC_CAF_OPUS,
groupValue: _codec,
onChanged: (radioBtn)
{
setState
(() {_codec = radioBtn;});
},
),
Text('caf/opus'),
],
),
),
),
Column(
crossAxisAlignment: CrossAxisAlignment.center,
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
Container(
margin: EdgeInsets.only(top: 24.0, bottom:16.0),
child: Text(
this._recorderTxt,
style: TextStyle(
fontSize: 48.0,
color: Colors.black,
),
),
),
_isRecording ? LinearProgressIndicator(
value: 100.0 / 160.0 * (this._dbLevel ?? 1) / 100,
valueColor: AlwaysStoppedAnimation<Color>(Colors.green),
backgroundColor: Colors.red,
) : Container()
],
),
Row(
children: <Widget>[
Container(
width: 56.0,
height: 56.0,
child: ClipOval(
child: FlatButton(
onPressed: () {
if (!this._isRecording) {
return this.startRecorder();
}
this.stopRecorder();
},
padding: EdgeInsets.all(8.0),
child: Image(
image: this._isRecording ? AssetImage('res/icons/ic_stop.png') : AssetImage('res/icons/ic_mic.png'),
),
),
),
),
],
mainAxisAlignment: MainAxisAlignment.center,
crossAxisAlignment: CrossAxisAlignment.center,
),
Column(
crossAxisAlignment: CrossAxisAlignment.center,
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
Container(
margin: EdgeInsets.only(top: 30.0, bottom:16.0),
child: Text(
this._playerTxt,
style: TextStyle(
fontSize: 48.0,
color: Colors.black,
),
),
),
],
),
Row(
children: <Widget>[
Container(
width: 56.0,
height: 56.0,
child: ClipOval(
child: FlatButton(
onPressed: () {
startPlayer();
},
padding: EdgeInsets.all(8.0),
child: Image(
image: AssetImage('res/icons/ic_play.png'),
),
),
),
),
Container(
width: 56.0,
height: 56.0,
child: ClipOval(
child: FlatButton(
onPressed: () {
pausePlayer();
},
padding: EdgeInsets.all(8.0),
child: Image(
width: 36.0,
height: 36.0,
image: AssetImage('res/icons/ic_pause.png'),
),
),
),
),
Container(
width: 56.0,
height: 56.0,
child: ClipOval(
child: FlatButton(
onPressed: () {
stopPlayer();
},
padding: EdgeInsets.all(8.0),
child: Image(
width: 28.0,
height: 28.0,
image: AssetImage('res/icons/ic_stop.png'),
),
),
),
),
],
mainAxisAlignment: MainAxisAlignment.center,
crossAxisAlignment: CrossAxisAlignment.center,
),
Container(
height: 56.0,
child: Slider(
value: sliderCurrentPosition,
min: 0.0,
max: maxDuration,
onChanged: (double value) async{
await flutterSound.seekToPlayer(value.toInt());
},
divisions: maxDuration.toInt()
)
),
Container
(
color: Color(0xFFC0C0C0),
child: Row
(
children:
[
Radio
(
value: 0,
groupValue: _playFromBuffer,
onChanged: (radioBtn)
{
setState
(() {_playFromBuffer = radioBtn;});
},
),
new Text('Play from file'),
Radio
(
value: 1,
groupValue: _playFromBuffer,
onChanged: (radioBtn)
{
setState
(() {_playFromBuffer = radioBtn;});
},
),
new Text('Play from buffer'),
],
),
),
],
),
),
);
}
}Metadata
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Metadata
Flutter plugin that relates to sound like audio and recorder.
Repository (GitHub)
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