ampos_flutter_sound 0.0.8+4

Flutter plugin that relates to sound like audio and recorder.

example/lib/main.dart

import 'dart:async';
import 'dart:io';

import 'package:ampos_flutter_sound/ampos_flutter_sound.dart';
import 'package:flutter/material.dart';
import 'package:intl/date_symbol_data_local.dart';
import 'package:intl/intl.dart' show DateFormat;

void main() {
  runApp(MyApp());
}

class MyApp extends StatefulWidget {
  @override
  _MyAppState createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {
  bool _isRecording = false;
  bool _isPlaying = false;
  bool _isReallyPlaying = false;

  StreamSubscription _recorderSubscription;
  StreamSubscription _dbPeakSubscription;
  StreamSubscription _playerSubscription;
  AmposFlutterSound flutterSound;

  String _recorderTxt = '00:00:00';
  String _playerTxt = '00:00:00';
  double _dbLevel;

  double sliderCurrentPosition = 0.0;
  double maxDuration = 1.0;

  String path = '';

  @override
  void initState() {
    super.initState();
    flutterSound = AmposFlutterSound(passiveRetrieveStatus: Platform.isAndroid);
    flutterSound.setSubscriptionDuration(0.01);
    flutterSound.setDbPeakLevelUpdate(0.8);
    flutterSound.setDbLevelEnabled(true);
    initializeDateFormatting();
  }

  Future<void> startRecorder() async {
    try {
      path = await flutterSound.startRecorder();
      print('startRecorder: $path');

      _recorderSubscription = flutterSound.onRecorderStateChanged.listen((e) {
        final DateTime date = DateTime.fromMillisecondsSinceEpoch(e.currentPosition.toInt(), isUtc: true);
        final String txt = DateFormat('mm:ss:SS', 'en_GB').format(date);

        setState(() {
          _recorderTxt = txt.substring(0, 8);
        });
      });
      _dbPeakSubscription = flutterSound.onRecorderDbPeakChanged.listen((value) {
        print('got update -> $value');
        setState(() {
          _dbLevel = value;
        });
      });

      setState(() {
        _isRecording = true;
        _isReallyPlaying = true;
      });
    } catch (err) {
      print('startRecorder error: $err');
    }
  }

  Future<void> stopRecorder() async {
    try {
      final String result = await flutterSound.stopRecorder();
      print('stopRecorder: $result');

      if (_recorderSubscription != null) {
        _recorderSubscription.cancel();
        _recorderSubscription = null;
      }
      if (_dbPeakSubscription != null) {
        _dbPeakSubscription.cancel();
        _dbPeakSubscription = null;
      }

      setState(() {
        _isRecording = false;
        _isReallyPlaying = false;
      });
    } catch (err) {
      print('stopRecorder error: $err');
    }
  }

  Future<void> startPlayer() async {
    final String path = await flutterSound.startPlayer(this.path);
    await flutterSound.setVolume(1.0);
    print('startPlayer: $path');

    try {
      _playerSubscription = flutterSound.onPlayerStateChanged.listen((e) {
        if (e != null) {
          sliderCurrentPosition = e.currentPosition;
          maxDuration = e.duration;

          final DateTime date = DateTime.fromMillisecondsSinceEpoch(e.currentPosition.toInt(), isUtc: true);
          final String txt = DateFormat('mm:ss:SS', 'en_GB').format(date);
          setState(() {
            _isPlaying = true;
            _isReallyPlaying = true;
            _playerTxt = txt.substring(0, 8);
          });
        }
      });
    } catch (err) {
      print('error: $err');
    }
  }

  Future<void> stopPlayer() async {
    try {
      final String result = await flutterSound.stopPlayer();
      print('stopPlayer: $result');
      if (_playerSubscription != null) {
        _playerSubscription.cancel();
        _playerSubscription = null;
      }

      setState(() {
        _isPlaying = false;
      });
    } catch (err) {
      print('error: $err');
    }
  }

  Future<void> pausePlayer() async {
    final String result = await flutterSound.pausePlayer();
    setState(() {
      _isPlaying = false;
    });
    print('pausePlayer: $result');
  }

  Future<void> resumePlayer() async {
    final String result = await flutterSound.resumePlayer();
    setState(() {
      _isPlaying = true;
    });
    print('resumePlayer: $result');
  }

  Future<void> seekToPlayer(int milliSecs) async {
    final 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>[
            Column(
              crossAxisAlignment: CrossAxisAlignment.center,
              mainAxisAlignment: MainAxisAlignment.center,
              children: <Widget>[
                Container(
                  margin: EdgeInsets.only(top: 24.0, bottom: 16.0),
                  child: Text(
                    _recorderTxt,
                    style: TextStyle(
                      fontSize: 48.0,
                      color: Colors.black,
                    ),
                  ),
                ),
                _isRecording
                    ? LinearProgressIndicator(
                        value: 100.0 / 160.0 * (_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 (!_isRecording) {
                          return startRecorder();
                        }
                        return stopRecorder();
                      },
                      padding: EdgeInsets.all(8.0),
                      child: Image(
                        image: _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: 60.0, bottom: 16.0),
                  child: Text(
                    _playerTxt,
                    style: TextStyle(
                      fontSize: 48.0,
                      color: Colors.black,
                    ),
                  ),
                ),
              ],
            ),
            Row(
              children: <Widget>[
                Container(
                  width: 56.0,
                  height: 56.0,
                  child: ClipOval(
                    child: FlatButton(
                      onPressed: () {
                        if (_isReallyPlaying) {
                          resumePlayer();
                        } else {
                          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()))
          ],
        ),
      ),
    );
  }
}