Sequoia and ScreenCapture

[asmagill]

@cmsj, @latenitefilms

Haven't had a chance to dig into this yet, but saw this come through in an yabai issue... does this affect us? I seem to recall some previous issues about needing screen capture permissions, but would have to dig a bit, so checking to see if you recall or know off hand.

https://developer.apple.com/documentation/macos-release-notes/macos-15-release-notes#ScreenCaptureKit

[cmsj]

hmm, do we use any of the old screen capture APIs?

[asmagill]

A quick check of the specific functions they mention show:

hammerspoon:%0:% ack CGWindowListCreateImage 
Hammerspoon/HSuicore.m:615:    CGImageRef windowImage = CGWindowListCreateImage(windowRect, kCGWindowListOptionIncludingWindow, windowID, kCGWindowImageBoundsIgnoreFraming | makeOpaque);

hammerspoon:%0:% ack CGDisplayStream
Hammerspoon/MJLua.m:363:        CGDisplayStreamRef stream = CGDisplayStreamCreate(CGMainDisplayID(), 1, 1, kCVPixelFormatType_32BGRA, nil, ^(CGDisplayStreamFrameStatus status, uint64_t displayTime, IOSurfaceRef frameSurface, CGDisplayStreamUpdateRef updateRef) {

So we at least need to learn more and find out if/how we might be affected.

[cmsj]

Oh, right, we do have window snapshotting. Good spoit

[cmsj]

I had a look at the ScreenCaptureKit API and we are going to have to replace our existing API - everything in SCKit is async, so we will have to adopt a callback setup, which is potentially going to be quite disruptive, unfortunately.

[latenitefilms]

I believe you already get prompted for screen recording permission to use hs.window, etc. so not sure this changed anything in short term until the APIs are removed.

Maybe all the async stuff we do as v2 in Swift?

[koekeishiya]

Editor’s note: Updated to remove paragraph that said there was an API developers could adopt to avoid this pop-up. There is no API to avoid this pop-up.

Source: https://9to5mac.com/2024/08/06/macos-sequoia-screen-recording-privacy-prompt/

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Apparently there will be a permission prompt weekly for these applications, if nothing changes from beta til release.