AVPlayerItemVideoOutput.CopyPixelBuffer missing/broken

[kiddkaffeine]

Apple platform

iOS, macOS

Framework version

net9.0-*

Affected platform version

9.0.100

Description

In Objective C, AVPlayerItemVideoOutput has a method called "CopyPixelBuffer", and the documentation suggests a similar version exists in C#:
https://learn.microsoft.com/en-us/dotnet/api/avfoundation.avplayeritemvideooutput.copypixelbuffer?view=xamarin-ios-sdk-12#avfoundation-avplayeritemvideooutput-copypixelbuffer(coremedia-cmtime-coremedia-cmtime@)

However, this method does not appear to exist.
1>TestFile.cs(55,25): Error CS1061 : 'AVPlayerItemVideoOutput' does not contain a definition for 'CopyPixelBuffer' and no accessible extension method 'CopyPixelBuffer' accepting a first argument of type 'AVPlayerItemVideoOutput' could be found (are you missing a using directive or an assembly reference?)

Using Rider to drill into the class, there does appear to be a method called "WeakCopyPixelBuffer" which returns an IntPtr but this method is protected and thus inaccessible.

Steps to Reproduce

1. Create a net9.0-macos project
2. Create an AVPlayerItemVideoOutput and attempt to invoke CopyPixelBuffer, eg
   videoOutput = new AVPlayerItemVideoOutput(); CMTime itemTime = videoOutput.GetItemTime((double)DateTime.Now.Ticks / TimeSpan.TicksPerMillisecond); // CACurrentMediaTime()? videoOutput.CopyPixelBuffer(itemTime, null);

Did you find any workaround?

None so far.

I did find this in the repo:
https://github.com/xamarin/xamarin-macios/blob/d8fba3b358a11b9679df2b8029d2e4a8df91a3b4/src/AVFoundation/AVPlayer.cs#L20
And tried to replicate it with reflection, but it appears to call a constructor for CVPixelBuffer which doesn't exist?

Relevant log output

No response

[rolfbjarne]

Looks like we're excluding the API from macOS; the reason for this has been lost in time.

Let me see if I can fix it.