Windows virtual Camera

Virtual camera plugin, divided into COM components and caller dll and provides Node.Js native modules.

Build

first generate the visual studio project file through cmake:

cd virtual.camera
mkdir build
cd build
cmake ..

open the project file in the build directory to generate the dll.

Node.js Napi Module

prerequisites, Node.Js 16.x version and Pyhton environment are required.

npm install
npm install -g node-gyp
node-gyp configure build

Usage

cd virtual.camera
./install.bat

output empty frame:

#include "client.h"
#include "windows.h"

int main() 
{
    NV12Layout layout = get_nv12_layout(1920, 1080);
    uint8_t* frame_buf = (uint8_t*)malloc(sizeof(uint8) * layout.size);
    if (frame_buf == NULL)
    {
        return -1;
    }
    
    VCam* vcam = vcam_open();
    if (vcam == NULL)
    {
        return -1;
    }
    
    if (vcam_start(vcam, 1920, 1080) != 0)
    {
        return -1;
    }
    
    for (;;)
    {
        Sleep(1000 / 30);
        if (vcam_write_frame(vcam, frame_buf) != 0)
        {
            return -1;
        }
    }
}

mycrl/vcam

Windows virtual Camera

Build

Node.js Napi Module

Usage

License