mp_audio_stream

Description:

mp audio stream

A Flutter plugin for multi-platform, simple audio stream playback with real-time generated audio data streams
Features #

Continuously plays buffered audio data at 44.1kHz until the buffer is empty
Supported format: float32 multi-channel
Suppots all flutter platforms: Android, iOS, macOS, Linux, Windows, and Web platforms

Web platform implementaion relies on WebAudio and AudioWorkletProcessor
Other platforms utilize miniaudio, an outstandig multi-platform audio library



Getting started #
flutter pub add mp_audio_stream
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Usage #
import 'dart:math' as math;
import 'dart:async';
import 'dart:typed_data';

import 'package:mp_audio_stream/mp_audio_stream.dart';

void main() async {
final audioStream = getAudioStream();

//default init params: {int bufferMilliSec = 3000,
// int waitingBufferMilliSec = 100,
// int channels = 1,
// int sampleRate = 44100}
audioStream.init(channels: 2); //Call this from Flutter's State.initState() method

const rate = 44100;
const freqL = 440;
const freqR = 660;
const dur = 10;
Float32List samples = Float32List(rate);

audioStream.resume(); //For the web, call this after user interaction

for (var t = 0; t < dur; t++) {
int pos = 0;
for (var i = 0; i < rate; i++) {
samples[pos++] = math.sin(2 * math.pi * ((i * freqL) % rate) / rate);
samples[pos++] = math.sin(2 * math.pi * ((i * freqR) % rate) / rate);
if (pos == samples.length) {
pos = 0;
audioStream.push(samples);
}
}
if (t > 0) {
await Future.delayed(const Duration(seconds: 1));
}
}

audioStream.uninit(); //Call this from Flutter's State.dispose()
}
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