Web Worker on Android / IOS WebView

[rlaurente]

Is there any way to make it work in Web Worker on Android / IOS WebView ? I able to implement it in browser using offscreencanvas and it worked perfectly. When I build the app using capacitor I'm getting undefined offscreencanvas function error. After further research, webview doesn't support offscreencanvas and capacitor doesn't allow changing of default webview.

Thanks

[kronozx]

I'm trying to do the same using WebView Component, but I'm stuck at getting camera permission with WebView (I'm experimenting to use face-api.js within a WebView by setting WebView source prop as my webapp but I can't get permission to use camera). Have you managed to get camera permission from WebView? Thanks in advance.

[josiahbryan]

#47 documents successful use of WebViews - however, here's how I do it:

• Capture camera in UI thread, show in a <video> element
• Set a timeout every X ms to render the <video> into a <canvas> that is hidden
• Do .getImageData on canvas, post that via transfer lists to the web worker
• WebWorker does all the face api detection
• WebWorker posts a message back to UI thread with the detected results

#47 documents an overlay canvas for rendering the views too - definitely works great. I get about 12-20fps detection, while the UI thread stays buttery smooth rendering live <video>

[libofei2004]

@rlaurente Do you solve your problem?