fluffychat/lib/pages/chat/recording_dialog.dart
2022-01-02 10:11:55 +01:00

235 lines
6.9 KiB
Dart

//@dart=2.12
import 'dart:async';
import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:flutter_gen/gen_l10n/l10n.dart';
import 'package:path_provider/path_provider.dart';
import 'package:record/record.dart';
import 'package:wakelock/wakelock.dart';
import 'package:fluffychat/config/app_config.dart';
import 'package:fluffychat/utils/platform_infos.dart';
import 'package:fluffychat/utils/sentry_controller.dart';
import 'events/audio_player.dart';
class RecordingDialog extends StatefulWidget {
static const String recordingFileType = 'm4a';
const RecordingDialog({
Key? key,
}) : super(key: key);
@override
_RecordingDialogState createState() => _RecordingDialogState();
}
class _RecordingDialogState extends State<RecordingDialog> {
Timer? _recorderSubscription;
Duration _duration = Duration.zero;
bool error = false;
String? _recordedPath;
final _audioRecorder = Record();
final List<double> amplitudeTimeline = [];
static const int bitRate = 64000;
static const double samplingRate = 22050.0;
Future<void> startRecording() async {
try {
final tempDir = await getTemporaryDirectory();
_recordedPath =
'${tempDir.path}/recording${DateTime.now().microsecondsSinceEpoch}.${RecordingDialog.recordingFileType}';
final result = await _audioRecorder.hasPermission();
if (result != true) {
setState(() => error = true);
return;
}
await Wakelock.enable();
await _audioRecorder.start(
path: _recordedPath,
encoder: AudioEncoder.AAC,
bitRate: bitRate,
samplingRate: samplingRate,
);
setState(() => _duration = Duration.zero);
_recorderSubscription?.cancel();
_recorderSubscription =
Timer.periodic(const Duration(milliseconds: 100), (_) async {
final amplitude = await _audioRecorder.getAmplitude();
var value = 100 + amplitude.current * 2;
value = value < 1 ? 1 : value;
amplitudeTimeline.add(value);
setState(() {
_duration += const Duration(milliseconds: 100);
});
});
} catch (e, s) {
SentryController.captureException(e, s);
setState(() => error = true);
}
}
@override
void initState() {
super.initState();
startRecording();
}
@override
void dispose() {
Wakelock.disable();
_recorderSubscription?.cancel();
_audioRecorder.stop();
super.dispose();
}
void _stopAndSend() async {
_recorderSubscription?.cancel();
await _audioRecorder.stop();
final path = _recordedPath;
if (path == null) throw ('Recording failed!');
const waveCount = AudioPlayerWidget.wavesCount;
final step = amplitudeTimeline.length < waveCount
? 1
: (amplitudeTimeline.length / waveCount).round();
final waveform = <int>[];
for (var i = 0; i < amplitudeTimeline.length; i += step) {
waveform.add((amplitudeTimeline[i] / 100 * 1024).round());
}
Navigator.of(context, rootNavigator: false).pop<RecordingResult>(
RecordingResult(
path: path,
duration: _duration.inMilliseconds,
waveform: waveform,
),
);
}
@override
Widget build(BuildContext context) {
const maxDecibalWidth = 64.0;
final time =
'${_duration.inMinutes.toString().padLeft(2, '0')}:${(_duration.inSeconds % 60).toString().padLeft(2, '0')}';
final content = error
? Text(L10n.of(context)!.oopsSomethingWentWrong)
: Row(
children: [
Container(
width: 16,
height: 16,
decoration: BoxDecoration(
borderRadius: BorderRadius.circular(32),
color: Colors.red,
),
),
Expanded(
child: Row(
mainAxisSize: MainAxisSize.min,
mainAxisAlignment: MainAxisAlignment.end,
children: amplitudeTimeline.reversed
.take(26)
.toList()
.reversed
.map((amplitude) => Container(
margin: const EdgeInsets.only(left: 2),
width: 4,
decoration: BoxDecoration(
color: Theme.of(context).colorScheme.primary,
borderRadius:
BorderRadius.circular(AppConfig.borderRadius),
),
height: maxDecibalWidth * (amplitude / 100)))
.toList(),
),
),
const SizedBox(width: 8),
SizedBox(
width: 48,
child: Text(time),
),
],
);
if (PlatformInfos.isCupertinoStyle) {
return CupertinoAlertDialog(
content: content,
actions: [
CupertinoDialogAction(
onPressed: () => Navigator.of(context, rootNavigator: false).pop(),
child: Text(
L10n.of(context)!.cancel.toUpperCase(),
style: TextStyle(
color: Theme.of(context)
.textTheme
.bodyText2
?.color
?.withAlpha(150),
),
),
),
if (error != true)
CupertinoDialogAction(
onPressed: _stopAndSend,
child: Text(L10n.of(context)!.send.toUpperCase()),
),
],
);
}
return AlertDialog(
content: content,
actions: [
TextButton(
onPressed: () => Navigator.of(context, rootNavigator: false).pop(),
child: Text(
L10n.of(context)!.cancel.toUpperCase(),
style: TextStyle(
color:
Theme.of(context).textTheme.bodyText2?.color?.withAlpha(150),
),
),
),
if (error != true)
TextButton(
onPressed: _stopAndSend,
child: Row(
mainAxisSize: MainAxisSize.min,
children: <Widget>[
Text(L10n.of(context)!.send.toUpperCase()),
const SizedBox(width: 4),
const Icon(Icons.send_outlined, size: 15),
],
),
),
],
);
}
}
class RecordingResult {
final String path;
final int duration;
final List<int> waveform;
const RecordingResult({
required this.path,
required this.duration,
required this.waveform,
});
factory RecordingResult.fromJson(Map<String, dynamic> json) =>
RecordingResult(
path: json['path'],
duration: json['duration'],
waveform: List<int>.from(json['waveform']),
);
Map<String, dynamic> toJson() => {
'path': path,
'duration': duration,
'waveform': waveform,
};
}