Play MP3 in .NET MAUI

[jcmontoya]

Until we have an all-platforms solution for media elements. I am trying to play an MP3 in native code, using dependency injection (Thanks to Gerald Versluis for his great tutorials):

I am trying the code bellow for Android:

using Android.Media;
using MauiApp1.Services;

namespace MauiApp1.Platforms;

public class BeepService : IBeepService
{
    private MediaPlayer _mediaPlayer;
    public bool PlayBeep()
    {
        _mediaPlayer = MediaPlayer.Create(global::Android.App.Application.Context, global::Android.Net.Uri.Parse("beep.mp3"));
        _mediaPlayer.Start();
        _mediaPlayer.Completion += delegate
        {
            _mediaPlayer.Reset();
            _mediaPlayer.Release();
        };

        return true;
    }
}

The problem is that I am not sure how to define the valid location for the mp3 file. Currently I have the file located in the Resources/Raw/ folder. I don't get any errors with this code, but I get no sound. Any help would be appreciated. I am also looking for the native code for IOS. Thanks in advance.

[xtuzy]

You can read file stream form Resources/Raw/, if you want get path, you need read file stream and store it to a folder.

[jcmontoya]

In the Windows platform this code works:

using MauiApp1.Services;
using Windows.Media.Playback;
using Windows.Media.Core;
using Windows.Storage.Streams;

namespace MauiApp1.Platforms
{
    public class BeepService : IBeepService
    {
        private MediaPlayer mediaPlayer = new MediaPlayer();
        public bool PlayBeep()
        {
            var stream = FileSystem.OpenAppPackageFileAsync("beep.mp3");
            IRandomAccessStream randomAccessStream = stream.Result.AsRandomAccessStream();
            mediaPlayer.Source = MediaSource.CreateFromStream(randomAccessStream, null);
            mediaPlayer.Play();
            //Console.Beep(1600, 500);
            return true;
        }
    }
}

Still trying to get Android to work:

_mediaPlayer = MediaPlayer.Create(global::Android.App.Application.Context, global::Android.Net.Uri.Parse("beep.mp3"));
I need to define a valid Uri.

[xtuzy]

you can search Android how to do, such as https://stackoverflow.com/questions/1972027/android-playing-mp3-from-byte

#if __ANDROID__
using Android.Media;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Stream = System.IO.Stream;

namespace MauiPlayground.Services
{
    internal class PlayAudioService
    {
        protected MediaPlayer player;
        public void StartPlayer(Stream stream)
        {
            if (player == null)
            {
                player = new MediaPlayer();
                player.SetAudioAttributes(new AudioAttributes.Builder().SetFlags(AudioFlags.AudibilityEnforced)
                    .SetLegacyStreamType(Android.Media.Stream.Music).SetUsage(AudioUsageKind.Game).SetContentType(AudioContentType.Music).Build());
                player.Reset();
                player.SetDataSource(new MyMediaDataSource(stream));
                player.Prepare();
                player.Start();
            }
        }

        public void Pause()
        {
            player.Pause();
        }

        public void Stop()
        {
            player.Stop();
        }
    }

    class MyMediaDataSource : MediaDataSource
    {
        Stream AudioStream;
        public MyMediaDataSource(Stream stream)
        {
            AudioStream = stream;
        }

        public override long Size => AudioStream != null ? AudioStream.Length : 0;

        public override void Close()
        {
            AudioStream?.Close();
        }

        public override int ReadAt(long position, byte[] buffer, int offset, int size)
        {
            if (position >= AudioStream.Length) return -1; // -1 indicates EOF 

            AudioStream.Position = position;
            return AudioStream.Read(buffer, offset, size);
        }
    }
}
#endif

[bbenetskyy]

What about playing mp3 files from cross-platform code in MAUI??? Like in Xamarin.Forms thanks to https://www.nuget.org/packages/Teddy.MvvmCross.Plugin.SimpleAudioPlayer

Is there something ready in the current Essentials or available NuGet Package which supports this??

Thanks 😇

[rowan-gray]

Check out this NuGet Package for cross platform audio playback.

Hope this helps!

[bbenetskyy]

For me Solution was natively playing sounds on Android:

    private readonly ILogger _logger;

    public void PlayAndroidSound(string sound)
    {
         Dispose();
         _mediaPlayer = new MediaPlayer();
         _mediaPlayer.Prepared += MediaPlayerOnPrepared;
         _mediaPlayer.SetDataSource(CurrentActivity!.Assets!.OpenFd(sound));
         _mediaPlayer.PrepareAsync();
    }

    private void MediaPlayerOnPrepared(object sender, EventArgs e)
    {
        _mediaPlayer.Start();
    }

    public void Dispose()
    {
        _mediaPlayer?.Release();
        _mediaPlayer?.Dispose();
        _mediaPlayer = null;
    }

And on iOS:

    private AVPlayer _player;
    private AVPlayerItem _playerItem;

    public void PlayIosSound(string sound)
    {
           var directory = Path.GetDirectoryName(sound);
           var filename = Path.GetFileNameWithoutExtension(sound);
           var extension = Path.GetExtension(sound).Substring(1);
           
           var url = NSBundle.MainBundle.GetUrlForResource(filename, extension, directory);
           var asset = AVAsset.FromUrl(url);
           
           _playerItem = new AVPlayerItem(asset);
           _player.ReplaceCurrentItemWithPlayerItem(_playerItem);
           _player.Play();
    }

    public void Dispose()
    {
        if (_player != null)
        {
            _player.ReplaceCurrentItemWithPlayerItem(null);
            _player.Dispose();
            _player = null;
        }

        if (_playerItem != null)
        {
            _playerItem.Dispose();
            _playerItem = null;
        }
    }

Because my mp3 files were attached as MauiAsset at Resources->Raw folder

[Colima-97]

In iOS I can't get the directory name using:

var directory = Path.GetDirectoryName(sound);

I'm sending the sound like "fail.mp3" but unfortunetly I always get null.
The file is in the Raw folder and it's set as MauiAsset.

I'll post in here if I get it work.