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NodeJS AudioManager

Control your computer's sound from any device on the network, without any additional applications.
You need G++ (get it here, i prefer v.11) to be installed for make changes in DLL.
Feel free to change an interface in index.html as you wish.

Install and run

Just copy the repository and install the dependencies:
npm install

How it work?

This application runs C code with WinAPI-calls in Node using a third-party library. Unlike most other applications that use the node-ffi or node-ffi-napi libraries for this purpose, which requires node-gyp to compile (and that works, to put it mildly, disgustingly), this option uses node-ffi-rs and G++ compiler, what eliminates the need to install a bunch of garbage into the system (for example, you don’t need Python and MSVS for this). If you already use MSVS, there is no problem, but for me it seems crazy to install several gigs just to compile one DLL...

There is some simillar npm-pack's for same goals, like win-audio, or node-audio-windows, but both of them also need a trash to build (MSVS, Python and so on).

In order not to run server by yourself every time, the node-windows package is used here, which makes an exe-wrapper for the script and allows you to install it on the system as a service. After installing this package, use the command to install the service:
npm run setup
For removing:
npm run uninstall

Attention! The code in test.cpp was written in a hurry, do not use it in production!

Build dll:

g++ -shared -o test.dll test.cpp -lole32 -lwinmm
lwinmm here need for waveInGetNumDevs-function

Starting the server after installation:
npm run dev

After that, on any device on the network, simply open in browser the ip-address of the computer on which you launched the server (eg. http://192.168.0.10:8080/).

Known problems

At the moment, there is some kind of error when trying to return a string with a message from the setVolume function - the function works, but when returning the value, the Node crashes without any messages. I’m not sure about the correctness of my code, there’s probably some kind of type mismatch, but it’s quite difficult to debug without any-errors — after all, I haven’t written in C for a long time and I can’t immediately understand what’s wrong. When the ffi-rs package is updated and will displays errors, I will try to fix this problem.

For now I decided to use return message codes (int), it works fine.