Use a webcam plugged in a Raspberry pi with Mono in C# using RaspberryCam

from http://www.raspberry-sharp.org/

12

RaspberryCam is a Mono/.NET assembly providing access to cameras plugged in your Raspberry Pi.

This program is based on v4l API and some fswebcam source headers.

With RapberryCam, you can take pictures and videos from a webcam pluged in your Raspberry Pi.

For the moment, the video stream is not a MPEG stream, but just a succession of compressed frames.

Source code is here : https://bitbucket.org/rflechner/raspberrycam/wiki/Home

Or you can just install the NuGet RaspberryCam in your project. (cf. https://nuget.org/packages/RaspberryCam)

In a future version, a real MPEG format should be implemented.

Before your first usage

Just copy RaspberryCam.so into /Lib

Or :

Copy C sources files on your Rapsberry Pi and type:

$sudo make
$sudo make install

Try it

Run ServerExample on your Rapsberry Pi

mono RaspberryCam.ServerExample.exe

And run RaspberryCam.VideoViewer.exe on your PC

Take a simple picture from C# code:

var cameras = Cameras.DeclareDevice()  
  .Named("Camera 1")
  .WithDevicePath("/dev/video0")  
  .Memorize();

cameras.Get("Camera 1").SavePicture(new PictureSize(640, 480), "Test1.jpg", 20);

// Or

cameras.Default.SavePicture(new PictureSize(640, 480), "Test2.jpg", 20);

// Best practice: cameras should be a single instance in your program  

Host a video and pictures server in your application

var videoServer = new TcpVideoServer(8080, cameras);  
Console.WriteLine("Server strating ...");  
videoServer.Start();  
Console.WriteLine("Server strated.");  

Download pictures from your Raspberry Pi

var videoClient = new TcpVideoClient(serverHostIp, serverPort);  
videoClient.StartVideoStreaming(new PictureSize(imageWidth/2, imageHeight/2)); //Open hardware  
var data = videoClient.GetVideoFrame(compressionRate); //data contains a simple jpeg frame  
videoClient.StopVideoStreaming(); //Close Hardware