[Native][C++]Screen Sharing

[Francois Temasys]

Hi,

I saw many discussions about the sharing of the desktop/windows in the javascript API.

I wanted to try to do the same on the native C++ API and I don't find how. I'm even wondering if it is implemented in the libjingle code.

Here is how I was planning to do:

std::vector<talk_base::WindowDescription> descriptions_desk;
dev_manager->GetWindows(&descriptions_desk);
std::cout << " Number of window found: " << descriptions_desk.size() << std::endl;
std::vector<talk_base::WindowDescription>::iterator desk_it = descriptions_desk.begin();
for (; desk_it != descriptions_desk.end(); ++desk_it)
{
 capturer = dev_manager->CreateWindowCapturer(desk_it->id());

 if (capturer != NULL)

 break;
else
 std::cout << "Couldn't create window capturer for: " << desk_it->title() << std::endl;
}

But "createWindowCapturer" is always returning NULL which is normal because in the implementation of the DeviceManager.cc(243):

VideoCapturer* DeviceManager::CreateWindowCapturer(talk_base::WindowId window) {
#if defined(WINDOW_CAPTURER_NAME)
  WINDOW_CAPTURER_NAME* window_capturer = new WINDOW_CAPTURER_NAME();
  if (!window_capturer->Init(window)) {
    delete window_capturer;
    return NULL;
  }
  return window_capturer;
#else
  return NULL;
#endif
}

According to this code I was looking for a child of cricket::VideoCapturer that has a Init() function and except the FileVideoCapturer class there is nothing.

Should I write my own classes for implementing this function?

[Marco Ma]

Hi,Francois Temasys:

 I meet the same question ,did you find a way to solve it?

在 2014年2月18日星期二 UTC+8下午5:50:19，Francois Temasys写道：

[Byron Clark]

You'll want to take a look at remoting::CastVideoCapturerAdapter in the chromium source (remoting/host/cast_video_capturer_adapter.{h,cc}). The code has some chromium dependencies, so unless you're working in chromium you'll want to build something that works like that class.