The type 'WaveFormat' exists in both 'Vortice.DirectX' and 'Vortice.Multimedia'

[shellohunter]

The type 'WaveFormat' exists in both 'Vortice.DirectX, Version=3.5.0.0, Culture=neutral, PublicKeyToken=5431ec61a7e925da' and 'Vortice.Multimedia, Version=1.8.0.0, Culture=neutral, PublicKeyToken=null' 

This error showed up in a small demo project that uses Vortice.XAudio2 & Vortice.MultiMedia & Vortice.MediaFoundation. these packages were installed via nuget.

I cannot figure a way to get rid of this... any help is appreciated.

btw, the project was targeting .net 4.7.2, is it ok?

[amerkoleci]

You need to remove Vortice.Multimedia package reference as it is deprecated

[shellohunter]

Great! Removing Vortice.Multimedia do eliminated that error. Thanks

But the code run into an exception immediately:

Exception thrown: 'SharpGen.Runtime.SharpGenException' in SharpGen.Runtime.dll
The thread '[Thread Destroyed]' (17364) has exited with code 0 (0x0).
'testhost.exe' (CoreCLR: clrhost): Loaded 'C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.5\System.Diagnostics.StackTrace.dll'. 
SharpGen.Runtime.SharpGenException: HRESULT: [0x88960001], Module: [Vortice.XAudio2], ApiCode: [XAUDIO2_E_INVALID_CALL/InvalidCall]
   at SharpGen.Runtime.Result.ThrowFailureException()
   at SharpGen.Runtime.Result.CheckError()
   at Vortice.XAudio2.IXAudio2SourceVoice.SubmitSourceBuffer(AudioBuffer buffer, Nullable`1 bufferWMA)
   at Vortice.XAudio2.IXAudio2SourceVoice.SubmitSourceBuffer(AudioBuffer buffer, UInt32[] decodedXMWAPacketInfo)
   at ClientTest.MirSounds.Tests.VorticeTests.TestVorticleXAudio2() in E:\workspace\oss\MiSounds\VorticeTest.cs:line 36
'testhost.exe' (CoreCLR: clrhost): Loaded 'C:\Program Files\Microsoft Visual Studio\2022\Community\Common7\IDE\PrivateAssemblies\Runtime\Microsoft.VisualStudio.Debugger.Runtime.NetCoreApp.dll'. 

the code was taken from here: https://github.com/amerkoleci/Vortice.Windows/blob/main/src/samples/HelloXAudio2/Program.cs I just wrapped it as a unit test method.

exception line was: https://github.com/amerkoleci/Vortice.Windows/blob/e4a2fb506ad42a17b181d8b81c9f5dbe25af0624/src/samples/HelloXAudio2/Program.cs#L36

[shellohunter]

Actually I'm try to test the native aot compatibility of any xaudio libs. Previously I failed to make sharpdx work with native aot. not sure if Vortice is aot compatible.

[amerkoleci]

It is but you need to use latest version

[shellohunter]

no luck yet. the exception mentioned above always happens. I try to debug it:

    internal unsafe void SubmitSourceBuffer(AudioBuffer buffer, BufferWma? bufferWMA)
    {
        AudioBuffer.__Native @ref = default(AudioBuffer.__Native);
        buffer.__MarshalTo(ref @ref);
        BufferWma value = default(BufferWma);
        if (bufferWMA.HasValue)
        {
            value = bufferWMA.Value;
        }
        Result result = ((delegate* unmanaged[Stdcall]<nint, void*, void*, int>)base[21])(base.NativePointer, &@ref, (!bufferWMA.HasValue) ? null : (&value));
        buffer.__MarshalFree(ref @ref);
        result.CheckError();  // <------ SharpGen.Runtime.SharpGenException here. beyond my reach.
    }

after changing playback code to sharpdx.xaudio2, it works without any issue.

[amerkoleci]

Share some code so I can help out

[shellohunter]

I'm using a demo project with only 2 files.

• VorticeXAudio2Test.cs, its code was taken from the sample. https://github.com/amerkoleci/Vortice.Windows/blob/main/src/samples/HelloXAudio2/Program.cs
• Program.cs, the main method
• SoundManager.cs, the sharpdx playback code, which works fine. already commented out in current test.

VorticeXAudio2Test.cs：

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Vortice.XAudio2;
using Vortice.Multimedia;

namespace TestXAudio2
{
    internal class VorticeXAudio2Test
    {

// Copyright (c) Amer Koleci and contributors.
// Licensed under the MIT License (MIT). See LICENSE in the repository root for more information.

    public static async Task TestVorticeXAudio2(string filePath)
    {
        // Create the XAudio2 engine.
        using IXAudio2 audio = XAudio2.XAudio2Create(ProcessorSpecifier.DefaultProcessor);

        // The engine is already in the started state when initialized.
        // In other cases, the following call will start the audio engine.
        // XAudio.StartEngine();

        // Create mastering voice.
        using IXAudio2MasteringVoice masterVoice = audio.CreateMasteringVoice();

        // Define wave format.
        WaveFormatExtensible format = new(96000, 24, 2);

        // Create source voice for buffer submission.
        using IXAudio2SourceVoice voice = audio.CreateSourceVoice(format, false);

        // Load sound effect into audio buffer.
        using Stream stream = new MemoryStream(File.ReadAllBytes(filePath));
        SoundStream soundStream = new(stream);
        using AudioBuffer effectBuffer = new(soundStream.ToDataStream());

        // Play buffer.
        voice.SubmitSourceBuffer(effectBuffer, null);
        voice.Start(0);

        Console.SetCursorPosition(0, 0);
        Console.WriteLine("Playing sound effect 'SpaceVehicleFlyby.wav'");

        // XAudio2 is a non-blocking API, so wait for the buffer to finish
        // playing before allowing the program to complete.
        bool isPlaying = true;
        while (isPlaying)
        {
            isPlaying = voice.State.BuffersQueued != 0;
            Console.Write('.');
            await Task.Delay(100);
        }
    }
    }
}

Program.cs:

using System.Threading;
using System.Threading.Tasks;

namespace TestXAudio2
{
    internal class Program
    {
        public static void Main(string[] args)
        {
            string audio = @".\BD60.wav";
#if true // the sound manager uses SharpDx, which works fine.
            SoundManager.PlayAudioFile(audio);
            Thread.Sleep(10000);
#else
            Task.Run(async ()=> { await VorticeXAudio2Test.TestVorticeXAudio2(audio); });
            Thread.Sleep(10000000);
#endif
        }
    }
}

[shellohunter]

lucky day! I just made it work! It turns out that the .wav file I was using is somehow different from the one in your demo project. Tried a lot of wav files, only a few works. THEN, I realized that I should use the MediaFoundation lib with XAudio2! after the integration, all wav plays with no issue!