flutter_audio_capture
Capture the audio stream buffer through microphone for iOS/Android. Required OS version is iOS 12+ or Android 23+
Getting Started
Add this line to your pubspec.yaml file:
dependencies:
flutter_audio_capture: ^0.0.2
and execute
$ flutter pub get
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>
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>
...
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();
Libraries
Dart
- dart:ui
- Built-in types and core primitives for a Flutter application. [...]
- dart:async
- Support for asynchronous programming, with classes such as Future and Stream. [...]
- dart:collection
- Classes and utilities that supplement the collection support in dart:core. [...]
- dart:convert
- Encoders and decoders for converting between different data representations, including JSON and UTF-8. [...]
- dart:core
- Built-in types, collections, and other core functionality for every Dart program. [...]
- dart:developer
- Interact with developer tools such as the debugger and inspector. [...]
- dart:math
- Mathematical constants and functions, plus a random number generator. [...]
- dart:typed_data
- Lists that efficiently handle fixed sized data (for example, unsigned 8 byte integers) and SIMD numeric types. [...]
- dart:ffi
- Foreign Function Interface for interoperability with the C programming language. [...]
- dart:io
- File, socket, HTTP, and other I/O support for non-web applications. [...]
- dart:isolate
- Concurrent programming using isolates: independent workers that are similar to threads but don't share memory, communicating only via messages. [...]
- dart:html
- HTML elements and other resources for web-based applications that need to interact with the browser and the DOM (Document Object Model). [...]
- dart:js
- Low-level support for interoperating with JavaScript. [...]
- dart:js_util
-
Utility methods to manipulate
package:js
annotated JavaScript interop objects in cases where the name to call is not known at runtime. [...]