AudioTrack.java MediaMetadataRetriever setDataSource throwing IllegalArgumentException

[MarkOSullivan94]

Currently trying to use stereo to play background music in my app and I keep receiving issues whenever I call the load(String) from the Stereo.dart class.

Whenever I looked further into the issue I figured out that the issue comes directly from the AudioTrack.java class whenever this line is called

mmr.setDataSource(path);

To replicate the issue, just add this code into the example project.

import 'dart:io';

import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:path_provider/path_provider.dart';
import 'package:stereo/stereo.dart';

void main() {
  runApp(new MaterialApp(home: new ExampleApp()));
}

class ExampleApp extends StatefulWidget {
  @override
  _ExampleAppState createState() => new _ExampleAppState();
}

class _ExampleAppState extends State<ExampleApp> {

  Stereo _stereo;

  @override
  initState() {
    super.initState();
    _stereo = new Stereo();
    _playMusic();
  }


  _playMusic() async {
    await _copyFiles();
    await _loadMusic();
  }

  _loadMusic() async {
    String dir = '';
    String mp3 = "pi.mp3";
    await getApplicationDocumentsDirectory().then(
            (Directory directory) => dir = 'file://' + directory.path + '/');
    try {
      await _stereo.load('$dir$mp3');
//      _stereo.play();
    } on StereoFileNotPlayableException {
      var alert = new AlertDialog(
          title: new Text('File not playable'),
          content: new Text('The file you specified is not playable.'));
      showDialog(context: context, child: alert);
    }
  }

  _copyFiles() async {
    final Directory dir = await getApplicationDocumentsDirectory();

    final File song = new File('${dir.path}/pi.mp3');

    if (!(await song.exists())) {
      final data = await rootBundle.load('assets/songs/pi.mp3');
      final bytes = data.buffer.asUint8List();
      await song.writeAsBytes(bytes, flush: true);
    }
  }


  @override
  Widget build(BuildContext context) {
    return Material(
      child: Scaffold(
        body: Container(),
      ),
    );
  }
}

Flutter --version

Flutter 1.2.2 • channel dev • https://github.com/flutter/flutter.git
Framework • revision 007a415c2a (9 weeks ago) • 2019-02-21 20:22:47 -0800
Engine • revision f1f19bba8f
Tools • Dart 2.2.0 (build 2.2.0-dev.2.1 c92d5ca288)