fluffychat/lib/components/audio_player.dart

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import 'dart:async';
import 'dart:typed_data';
import 'package:famedlysdk/famedlysdk.dart';
import 'package:flutter/foundation.dart';
import 'package:flutter/material.dart';
import 'package:flutter_sound/flutter_sound.dart';
import 'package:intl/intl.dart';
import 'matrix.dart';
class AudioPlayer extends StatefulWidget {
final Color color;
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final Event event;
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static String currentId;
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const AudioPlayer(this.event, {this.color = Colors.black, Key key})
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: super(key: key);
@override
_AudioPlayerState createState() => _AudioPlayerState();
}
enum AudioPlayerStatus { NOT_DOWNLOADED, DOWNLOADING, DOWNLOADED }
class _AudioPlayerState extends State<AudioPlayer> {
AudioPlayerStatus status = AudioPlayerStatus.NOT_DOWNLOADED;
FlutterSound flutterSound = FlutterSound();
StreamSubscription soundSubscription;
Uint8List audioFile;
String statusText = "00:00";
double currentPosition = 0;
double maxPosition = 0;
@override
void dispose() {
if (flutterSound.audioState == t_AUDIO_STATE.IS_PLAYING) {
flutterSound.stopPlayer();
}
soundSubscription?.cancel();
super.dispose();
}
_downloadAction() async {
if (status != AudioPlayerStatus.NOT_DOWNLOADED) return;
setState(() => status = AudioPlayerStatus.DOWNLOADING);
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final matrixFile = await Matrix.of(context)
.tryRequestWithErrorToast(widget.event.downloadAndDecryptAttachment());
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setState(() {
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audioFile = matrixFile.bytes;
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status = AudioPlayerStatus.DOWNLOADED;
});
_playAction();
}
_playAction() async {
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if (AudioPlayer.currentId != widget.event.eventId) {
if (AudioPlayer.currentId != null) {
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if (flutterSound.audioState != t_AUDIO_STATE.IS_STOPPED) {
await flutterSound.stopPlayer();
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setState(() => null);
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}
}
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AudioPlayer.currentId = widget.event.eventId;
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}
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switch (flutterSound.audioState) {
case t_AUDIO_STATE.IS_PLAYING:
await flutterSound.pausePlayer();
break;
case t_AUDIO_STATE.IS_PAUSED:
await flutterSound.resumePlayer();
break;
case t_AUDIO_STATE.IS_RECORDING:
break;
case t_AUDIO_STATE.IS_STOPPED:
await flutterSound.startPlayerFromBuffer(
audioFile,
codec: t_CODEC.CODEC_AAC,
);
soundSubscription ??= flutterSound.onPlayerStateChanged.listen((e) {
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if (AudioPlayer.currentId != widget.event.eventId) {
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soundSubscription?.cancel()?.then((f) => soundSubscription = null);
this.setState(() {
currentPosition = 0;
statusText = "00:00";
});
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AudioPlayer.currentId = null;
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} else if (e != null) {
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DateTime date =
DateTime.fromMillisecondsSinceEpoch(e.currentPosition.toInt());
String txt = DateFormat('mm:ss', 'en_US').format(date);
this.setState(() {
maxPosition = e.duration;
currentPosition = e.currentPosition;
statusText = txt;
});
if (e.duration == e.currentPosition) {
soundSubscription
?.cancel()
?.then((f) => soundSubscription = null);
}
}
});
break;
}
}
@override
Widget build(BuildContext context) {
return Row(
mainAxisSize: MainAxisSize.min,
children: <Widget>[
Container(
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width: 30,
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child: status == AudioPlayerStatus.DOWNLOADING
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? CircularProgressIndicator(strokeWidth: 2)
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: IconButton(
icon: Icon(
flutterSound.audioState == t_AUDIO_STATE.IS_PLAYING
? Icons.pause
: Icons.play_arrow,
color: widget.color,
),
onPressed: () {
if (status == AudioPlayerStatus.DOWNLOADED) {
_playAction();
} else {
_downloadAction();
}
},
),
),
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Expanded(
child: Slider(
value: currentPosition,
onChanged: (double position) =>
flutterSound.seekToPlayer(position.toInt()),
max: status == AudioPlayerStatus.DOWNLOADED ? maxPosition : 0,
min: 0,
),
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),
Text(
statusText,
style: TextStyle(
color: widget.color,
),
),
],
);
}
}