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Description:

flutter audio capture

flutter_audio_capture #
Capture the audio stream buffer through microphone for iOS/Android.
Required OS version is iOS 13+ or Android 23+
Getting Started #
Add this line to your pubspec.yaml file:
dependencies:
flutter_audio_capture: ^1.1.7
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and execute
$ flutter pub get
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Android #
If you want to use this package on Android OS, you need to set RECORD_AUDIO permission to AndroindManifest.xml like below.
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.ymd.flutter_audio_capture">
...
// Add this line
<uses-permission android:name="android.permission.RECORD_AUDIO"/>
</manifest>
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iOS #
If you want to use this package on iOS, you need to set NSMicrophoneUsageDescription to Info.plist like below.
<dict>
<key>NSMicrophoneUsageDescription</key>
<string>Need microphone access to capture audio</string>
...
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Linux #
On Linux, this package uses parec to record audio.
While things should just work on recent Ubuntu versions,
make sure to have pulseaudio installed on the target device.
Example #
You can see full example in example/lib/main.dart
import 'package:flutter_audio_capture/flutter_audio_capture.dart';
...

// Callback function if device capture new audio stream.
// argument is audio stream buffer captured through mictophone.
// Currentry, you can only get is as Float64List.
void listener(dynamic obj) {
var buffer = Float64List.fromList(obj.cast<double>());
print(buffer);
}

// Callback function if flutter_audio_capture failure to register
// audio capture stream subscription.
void onError(Object e) {
print(e);
}

...

FlutterAudioCapture plugin = new FlutterAudioCapture();
// Start to capture audio stream buffer
// sampleRate: sample rate you want
// bufferSize: buffer size you want (iOS only)
await plugin.start(listener, onError, sampleRate: 16000, bufferSize: 3000);
// Stop to capture audio stream buffer
await plugin.stop();
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