mic_stream 0.4.0-dev

Provides a tool to get the microphone input as PCM Stream [Android only]

mic_stream: 0.3.0

[Flutter Plugin] Provides a tool to get the microphone input as 8 or 16 bit PCM Stream

About mic_stream:

As Flutter still lacks some functionality, this plugin aims to provide the possibility to easily get an audio stream from the microphone, using a simple java implementation [=> Android only]

How to use:

Permissions

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"/>

The plugin provides one class:

Microphone <T> ({options})

{options} are as described on the [Android page](https://developer.android.com/reference/android/media/AudioRecord#AudioRecord(int,%20int,%20int,%20int,%20int). Use the provided enums instead of raw integers.

T is a generic type describing what type of stream you get, i.e., the stream will be of type Stream <T>. It must be either List <int> or int; due to dart's dynamic typing system, supporting more is unreasonable. int is the preferable choice, List <int> is the more raw variant supported for legacy reasons.

Call .stream on it to get a single-subscription stream or .asBroadcast to get a broadcast stream. While someone listens to either of these streams, audio is being recorded; stopping a subscription will cancel the recording.

NOTE: The stream will listen indefinitely if not cancelled otherwise

Example:

// Create a new stream
Microphone <int> mic = Microphone <int> (sampleRate: 44100);

// Start listening to the stream
StreamSubscription <int> listener = mic.stream.listen((samples) => print(samples));

...

// Cancel the subscription
listener.cancel()

Legacy

To support backwards compatibility, the old function microphone({options}) will be continued but its implementation is changed to use a static Microphone object instead.

Flutter

About Flutter Plugins: https://flutter.io/developing-packages/

Flutter Documentation: https://flutter.io/docs