Using Desktop Capture with C++

[jeanfranc...@equipecdrin.com]

Hi, I managed to compile WebRTC under Windows 7 and Visual Studio 2013. My goal is to stream the desktop from a native program. 

So far I get to this point:

cricket::VideoCapturer* videoCapturer = 0;

videoCapturer = deviceManager->CreateDesktopCapturer(primaryDesktop.id());

if (videoCapturer == 0)

{

cerr << "No video capturer" << endl;

return -1;

}

CreateDesktopCapturer will always return NULL because the macro DESKTOP_CAPTURER_NAME is not defined in my build.

How do I get this macro defined?

Do I have to do it my self or there is compile option for it?

[Paula zwerky]

I'm also interested here. As far as I see there is no DESKTOP_CAPTURER_NAME defined in the framework. Just look for the DestopCapture module in the webrtc.sln file. It has something called ScreenCapturerWin there. I feel we have intelligently connect these two together. If you have more findings on this, please share.

Thanks and Regards,

Paula.

[Francois Temasys]

I'm also interested in this issue. I already had opened a subject on that some time ago:

https://groups.google.com/forum/#!topic/discuss-webrtc/rrD7Ub4XtNk

Regards,

Francois

[jeanfranc...@equipecdrin.com]

I think we have to implement our own VideoCapturer subclass. I did not find anything in the code base that fit there.

Also, desktop capture is not working for me in Chrome 34.0.1847.131 m or 37.0.1993.0 canary. 

I try it on uberconference.com wich use a plugin as dicussed here (http://youtu.be/DvzDzIXoncg)

[jeanfranc...@equipecdrin.com]

Update: Screen sharing work in chome: need to use https 

[Jiayang Liu]

The desktop capturing implementation is in webrtc/modules/desktop_capture/

You can look into Chromium as an example of how to use it:

https://code.google.com/p/chromium/codesearch#chromium/src/content/browser/media/capture/desktop_capture_device.cc&q=DesktopCaptureDevice&sq=package:chromium&l=501

[Benjamin Hamrick]

Did you end up getting this to work? I am trying to do something similar.

[William Cheung]

I've been trying to get this interface to work in windows but with no luck so far. Has anyone had any success?

[Benjamin Hamrick]

I am instead going to use electron and simple-peer to get webrtc screen capturing in a native app. Here is an example.

[Sebastian Kunz]

Hello, I'm also interested in this topic, so I'm bumping it.