[Flutter Plugin] Provides a tool to get the microphone input as 8 or 16 bit PCM Stream.
As Flutter still lacks some functionality, this plugin aims to provide the possibility to easily get an audio stream from the microphone of mobile devices.
NOTE: If you receive white noise under MacOS, try version 0.6.3-dev instead.
The plugin provides one method:
Future<Stream<UInt8List>> MicStream.microphone({options})
Listening to this stream starts the audio recorder while cancelling the subscription stops the stream.
The plugin also provides information about some properties:
Future<double> sampleRate = await MicStream.sampleRate;
Future<int> bitDepth = await MicStream.bitDepth;
Future<int> bufferSize = await MicStream.bufferSize;
Make sure you have microphone recording permissions enabled for your project. To do so, add this line to the AndroidManifest.xml:
<uses-permission android:name="android.permission.RECORD_AUDIO"/>
In the Info.plist:
<key>NSMicrophoneUsageDescription</key>
<string>Microphone access required</string>
For MacOS:
Open macos/Runner.xcworkspace click Runner -> Signing & Capabilities -> Check "Audio Input"
// Init a new Stream
Stream<List<int>> stream = await MicStream.microphone(sampleRate: 44100);
// Start listening to the stream
StreamSubscription<List<int>> listener = stream.listen((samples) => print(samples));
// Cancel the subscription
listener.cancel()
Note: This plugin is still under development, and some APIs might not be available yet. Feedback and Pull Requests are most welcome!