flutter_sound

This plugin provides simple recorder and player functionalities for both `android` and `ios` platforms. This only supports default file extension for each platform. This plugin handles file from remote url. This plugin can handle playback stream from native (To sync exact time with bridging).

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Getting Started

For help getting started with Flutter, view our online documentation.

Install

Add flutter_sound as a dependency in pubspec.yaml For help on adding as a dependency, view the documentation.

Post Installation

On iOS you need to add a usage description to info.plist:

<key>NSMicrophoneUsageDescription</key>
<string>This sample uses the microphone to record your speech and convert it to text.</string>
<key>UIBackgroundModes</key>
<array>
	<string>audio</string>
</array>

On Android you need to add a permission to AndroidManifest.xml:

<uses-permission android:name="android.permission.RECORD_AUDIO" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />

Methods

Func	Param	Return	Description
setSubscriptionDuration	`double sec`	`String` message	Set subscription timer in seconds. Default is `0.01` if not using this method.
startRecorder	`String uri`	`String` uri	Start recording. This will return uri used.
stopRecorder		`String` message	Stop recording.
startPlayer	`String uri`	`String` message	Start playing.
stopPlayer		`String` message	Stop playing.
pausePlayer		`String` message	Pause playing.
resumePlayer		`String` message	Resume playing.
seekToPlayer	`int milliSecs` position to goTo	`String` message	Seek audio to selected position in seconds. Parameter should be less than audio duration to correctly placed.

Subscriptions

Subscription	Return	Description
onRecorderStateChanged	`<RecordStatus>`	Able to listen to subscription when recorder starts.
onPlayerStateChanged	`<PlayStatus>`	Able to listen to subscription when player starts.

Default uri path

When uri path is not set during the function call in startRecorder or startPlayer, they are saved in below path depending on the platform.

Default path for android
- sdcard/sound.mp4.
Default path for ios
- sound.m4a.

Usage

Creating instance.

FlutterSound flutterSound = new FlutterSound();

Starting recorder with listener.

String path = await flutterSound.startRecorder(null);
print('startRecorder: $path');

_recorderSubscription = flutterSound.onRecorderStateChanged.listen((e) {
  DateTime date = new DateTime.fromMillisecondsSinceEpoch(e.currentPosition.toInt());
  String txt = DateFormat('mm:ss:SS', 'en_US').format(date);
});

Stop recorder

String result = await flutterSound.stopRecorder();
print('stopRecorder: $result');

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

Start player

String path = await flutterSound.startPlayer(null);
print('startPlayer: $path');

_playerSubscription = flutterSound.onPlayerStateChanged.listen((e) {
	if (e != null) {
		DateTime date = new DateTime.fromMillisecondsSinceEpoch(e.currentPosition.toInt());
		String txt = DateFormat('mm:ss:SS', 'en_US').format(date);
		this.setState(() {
			this._isPlaying = true;
			this._playerTxt = txt.substring(0, 8);
		});
	}
});

Stop player

String result = await flutterSound.stopPlayer();
print('stopPlayer: $result');
if (_playerSubscription != null) {
	_playerSubscription.cancel();
	_playerSubscription = null;
}

Pause player

String result = await flutterSound.pausePlayer();

Resume player

String result = await flutterSound.resumePlayer();

Seek player

String result = await flutterSound.seekToPlayer(miliSecs);

Setting subscription duration (Optional). 0.01 is default value when not set.

/// 0.01 is default
flutterSound.setSubscriptionDuration(0.01);

Setting volume.

/// 1.0 is default
/// Currently, volume can be changed when player is running. Try manage this right after player starts.
String path = await flutterSound.startPlayer(null);
await flutterSound.setVolume(0.1);

TODO

Seeking example in Exmaple project
Volume Control
Sync timing for recorder callback handler

Help Maintenance

I've been maintaining quite many repos these days and burning out slowly. If you could help me cheer up, buying me a cup of coffee will make my life really happy and get much energy out of it.

flutterbuddy77/flutter_sound