Stop execution of HoloLensARToolkit. about hololensartoolkit

[qian256]

Currently, the ARUWPVideo can pause/resume. Have you tried if the camera can be accessed from your app when the video is paused? What API are you using to access the webcam? If you are using Windows UWP MediaCapture API, you should be able to insert your functionality into the frame receiving callback without turning off the webcam. If you are using Unity WebcamTexture API, I do not know how the resources are shared (My guess is MediaCapture for HoloLensARToolKit needs to be totally stopped).

[Baxab]

I am using Unity VideoCapture class. Yes, it can access the webcam when HoloLensARToolkit is paused, but the problem is that I can not know when the resource will be available, since the Pause() function is async and it takes a while for it to finish its execution and free the webcam resource. Is there a way to detect when HoloLensARToolkit stops?

[ericalbers]

the pause looks like it ends up calling StopFrameReaderAsyncTask, in ARUWPVideo.cs which will change
controller.status to ARUWP.ARUWP_STATUS_CTRL_INITIALIZED; when its done
Adding a GetStatus to return controller.status might be useful, or perhaps sending event when status changes

[qian256]

@Baxab The pause is a .NET asynchronous function, which returns before it is really done. As mentioned by @ericalbers , you can check controller status because controller.status = ARUWP.ARUWP_STATUS_CTRL_INITIALIZED; is called after the async function really done.