commit bf85c38fb360040c0a6f303a97a03b5929f57011
author Andreas Pehrson <apehrson@mozilla.com> Mon Oct 07 13:10:52 2024
committer WebRTC LUCI CQ <webrtc-scoped@luci-project-accounts.iam.gserviceaccount.com> Tue Apr 22 12:50:29 2025
tree da8824b2be9eeb9b4f118575f35f94a67b27c34a
parent 3ae6eceeb7fc43d71df50ed4ff7e5229822a54ca

Integrate ScreenCapturerSck with SCContentSharingPicker

This patch at a high level does the following:
- Hooks CreateGenericCapturer to create a ScreenCapturerSck with
  SCContentSharingPicker if allowed by options and runtime checks (macOS
  14). It allows both single display and multiple windows picker modes.
- Creates a new SckPickerHandle singleton class that manages the number
  of active pickers, and sets the `active` flag on the shared system
  picker. It also generates a unique SourceId for each capturer, since
  the source of a capturer that uses the picker isn't constant and
  therefore cannot be shared across multiple clients.
- Hooks up SCContentSharingPickerObserver callbacks to expose a
  permanent error in case of an error or picker cancellation.

The API for the generic capturer is as any other desktop capture
backend:
- GetSourceList() and SelectSource() works as normal but don't do
  anything useful.
- Start() displays the picker and makes CaptureFrame() start returning
  temporary errors.
- On selection, capture starts and CaptureFrame() starts returning
  frames.
- On cancelling the picker, or if there's an error, CaptureFrame()
  starts returning permanent errors.

Bug: webrtc:367915807
Change-Id: I75cd78897f2e7c9702a5f5683d21ee1a7ea914d5
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/365094
Reviewed-by: Johannes Kron <kron@webrtc.org>
Reviewed-by: Alexander Cooper <alcooper@chromium.org>
Reviewed-by: Tomas Gunnarsson <tommi@webrtc.org>
Commit-Queue: Andreas Pehrson <apehrson@mozilla.com>
Cr-Commit-Position: refs/heads/main@{#44426}