.NET Can not import DeepSpeech NuGet package

[erksch]

Hey there!

I want to use DeepSpeech in a .NET project and fortunately you already have a NuGet package available! But when I add DeepSpeech to my references by installing it in Visual Studio with the NuGet Manager, it is listed in my References but I can not import it with using.

using DeepSpeechClient.Interfaces;
// The type or namespace name 'DeepSpeechClient' could not be found.

The .NET example project somehow works, but where is the difference?

Steps to reproduce:

• Create basic .NET CLI project in Visual Studio
• Add DeepSpeech with NuGet manager
• try import with using DeepSpeechClient.Interfaces;

Do you have any ideas? Am I missing something (I am new to windows stuff)?

[lissyx]

What version are you using ? Have you had a look at the .Net code under native_client/dotnet/ ?

[erksch]

I am using the latest v0.6.1. The code in native_client/dotnet README only states how to build the native client for windows, but I guess I don't have to do that because the NuGet package with a prebuild library exists.

[lissyx]

I am using the latest v0.6.1. The code in native_client/dotnet README only states how to build the native client for windows, but I guess I don't have to do that because the NuGet package with a prebuild library exists.

Unfortunately, according to the docs, 0.6..1 uses the same interface, and it's working well on CI.

Have you verified against ? https://github.com/mozilla/DeepSpeech-examples/tree/r0.6/net_framework/DeepSpeechWPF

I know nothing about .Net in itself, so you'd need to wait for @carlfm01 :/

[erksch]

I fixed it! I was looking into this commit of the example project and saw these lines were added in the .csproj file:

<Reference Include="DeepSpeechClient, Version=1.0.0.0, Culture=neutral, processorArchitecture=AMD64">
  <HintPath>packages\DeepSpeech.0.6.0\lib\net46\DeepSpeechClient.dll</HintPath>
</Reference> 

I looked up the lines in my file and it is:

<PackageReference Include="DeepSpeech">
  <Version>0.6.1</Version>
</PackageReference>

So my uneducated guess would be to run nuget install DeepSpeech and just reference the resulting folder via Reference and HintPath instead of using PackageReference.

[erksch]

But this seems a bit odd, shouldn't the NuGet package when referred with PackageReference work, too?

[lissyx]

nuget install DeepSpeech

Does that installs you 0.6.1 ?

But this seems a bit odd, shouldn't the NuGet package when referred with PackageReference work, too?

Again, 0 knowledge in .Net, I don't even understand what you are talking abotu.

[erksch]

Does that installs you 0.6.1 ?

Yes it does.

Sorry @lissyx :D Although it's not perfect, I found my workaround. So thank you for checking in! Maybe later @carlfm01 will clarify some things.

[reuben]

I'm pretty sure you should be able to use it with just the NuGet reference...

[carlfm01]

Hello @erksch

I was looking into this commit of the example project and saw these lines were added in the .csproj file:

This should be automatically added by Visual Studio, which Visual studio version are you using?

I'm pretty sure you should be able to use it with just the NuGet reference...

You are right.

[erksch]

Does it work for you when creating a new project?

[carlfm01]

Does it work for you when creating a new project?

Yes, I just created a new project and imported it without a problem.

Go to Help/About Visual Studio and click the copy button

Microsoft Visual Studio Community 2019 Version 16.5.4 VisualStudio.16.Release/16.5.4+30011.22 Microsoft .NET Framework Version 4.8.03761

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[erksch]

Here's the info:

Microsoft Visual Studio Community 2019 (2)
Version 16.3.10
VisualStudio.16.Release/16.3.10+29519.87
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Version 4.8.03752

Installed Version: Community

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Provides common services for use by Azure Mobile Services and Microsoft Azure Tools.

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[erksch]

Update: When creating a fresh WPF App, adding the package and using it works as expected. However when making a CLI or UWP project it does not.

[carlfm01]

Hello @erksch, thanks for the update.

The CLI project type works as usual on my side, can't test UWP due to an external issue that suggests reinstalling vs, I can't do that right now.

This looks like VS cache/config/version issue, now please verify under Tools/Options/Nuget package manager this config:

Also, clear the NuGet cache and try again. If this doesn't work please update visual studio.

[lissyx]

@erksch Have you been able to figure this out?

[lissyx]

@erksch Gentle ping?

[erksch]

@lissyx Sorry for getting back so late, we shifted priority away from the windows recently. I have the same NuGet configuration as @carlfm01 suggested. I just created a fresh UWP app, added DeepSpeech (0.7.4) as a reference, and tried to include the DeepSpeechClient class and it is not found. So as usual. I still have to use the workaround as mentioned in my comment from above.

Also what is weird: When adding a reference to the UWP app, no Packages folder or Packages.config is created. Maybe UWP is just handling NuGet references differently (only in csproj file) and that doesn't work for the way the DeepSpeech package is published.

Other (uneducated) idea: I remember the NuGet package having libraries for target frameworks net46 net45 and so on. Maybe there is missing an export for target framework uap10.0 which the UWP NuGet manager can pick up?

[lissyx]

Well i know nothing about the .Net framework 😢

[carlfm01]

Well i know nothing about the .Net framework

Today I can look into this.

[carlfm01]

@erksch Thanks for the update and you are correct :

Maybe there is missing an export for target framework uap10.0 which the UWP NuGet manager can pick up?

I'm testing with NuGet locally to send a patch.

[carlfm01]

Ugh this will require more effort for UWP support, best case I only add the target (Which seems not to work), and the worst case I'll need to change project type completely and change cluster packing logic :/

[lissyx]

the worst case I'll need to change project type completely and change cluster packing logic :/

While unfortunate, I think it would be a good move if it helps making the library being usable to UWP. Is it complicated? Maybe @erksch could help here if you are overloaded :-)

[erksch]

I mean the library is totally usable on UWP. It just requires some manual steps to get it done. If fixing that is out of scope maybe a small workaround guide would be enough.

[carlfm01]

I think it would be a good move if it helps making the library being usable to UWP.

+1 Here, it also makes easier to introduce Net core support :)

Maybe @erksch could help here if you are overloaded :-)

I can take, maybe later for testing. I wanted to touch .Net Core and I think this is the door.

I mean the library is totally usable on UWP.

Just luck, digging docs we should not pack net framework build as UWP, there are even min/max win sdk versions missing on the NuGet packing. I feel it can explode any time if we pack net framework version.

I will upgrade project type aiming for UWP and Net Core support :)

[lissyx]

I will upgrade project type aiming for UWP and Net Core support :)

Do you think you can have enough time for 0.8 for that ?

I mean the library is totally usable on UWP. It just requires some manual steps to get it done. If fixing that is out of scope maybe a small workaround guide would be enough.

If not, can we at least document this workaround more or less officially?

[carlfm01]

Do you think you can have enough time for 0.8 for that ?

Yes.

[kdavis-mozilla]

@carlfm01 How is this progressing?

[carlfm01]

@kdavis-mozilla Hello, I need to confirm that this command : --add Microsoft.VisualStudio.ComponentGroup.UWP.BuildTools;includeRecommended --add Microsoft.NetCore.Component.SDK;includeRecommended --add Microsoft.VisualStudio.Component.Windows10SDK.18362;includeRecommended fixes the issue, the thing is that I need to uninstall VS to confirm and can't do it on my daylight, I plan to finish this within the next two days (with vs installed is not working)

[carlfm01]

Ok, now installing the generated NuGet by https://github.com/mozilla/DeepSpeech/pull/3100 from https://community-tc.services.mozilla.com/api/queue/v1/task/U9AVNs4CTqCR6GwmvXjhhQ/runs/0/artifacts/public/DeepSpeech.0.9.0-alpha.2.nupkg automatically adds the client, @erksch can you test in your side?

You will need to change the default target to x64(of your example), I'll do it in a PR.

[erksch]

Awesome I'll give it a try today or tomorrow.

[erksch]

@carlfm01 It works! Awesome! thank you for your hard work!

[kdavis-mozilla]

@carlfm01 Is the remaining task now landing the PR "Add UWP Nuget packing support"?

[carlfm01]

Hello @kdavis-mozilla, just rebased, I'll send test with a different PR.

@erksch Thanks.

[lissyx]

Hello @kdavis-mozilla, just rebased, I'll send test with a different PR.

@erksch Thanks.

So if it's green we can merge this one? Looking forward to it and the tests :D

[carlfm01]

So if it's green we can merge this one?

Yes, already got the uwp console project working with a file link to reuse the .Net Framework console, the surprise was we can't run uwp .exe apps from command line out of the box :D, still on it.

[FurkanGozukara]

Hello. Can anyone point a tutorial to use DeepSpeech with C#? I just need where to download latest database and how to convert an MP3 audio file to text

@carlfm01

[lissyx]

Hello. Can anyone point a tutorial to use DeepSpeech with C#? I just need where to download latest database and how to convert an MP3 audio file to text

@carlfm01

Are you going to spam all the issues ? This is my last warning.

[problemSolvingProgramming]

@reuben @lissyx @erksch Hello . How can I translate audio very accurately through a microphone using C #? Do I have to make very specific settings?

[ADD-eNavarro]

Hello @reuben, @lissyx and @carlfm01 I see this issue is closed for a few months now, but I'm experiencing the very same problem here: I create a new .NET Core 3.1 console project in Visual Studio (details further on), copy Program.cs from the examples and get a compiler error CS0246 (missing reference).

I am far from being an expert using VS, maybe I am doing something wrong.

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[giovinazzo-kevin]

+1. I just tried importing the package on a .NET 7 WPF app and the same issue mentioned above happens.

I will try the suggested workaround and edit this comment.