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The DAL plugin-based virtualcamera shares data between OBS and the plugin using an IOSurface. IOSurface locks are necessary to ensure race conditions between data generation (OBS side) and consumption (virtual camera side) and also that an IOSurface is not offloaded to GPU memory when it is indeed needed in CPU memory. Also moves the invalidation of the NSMachPort for the frames to after the IOSurface data has been converted into a pixelbuffer and added to the frame queue of the virtual camera, as an early invalidation will cut off access to the pixel data shared with the DAL plugin.
OBS Studio <https://obsproject.com> =================================== .. image:: https://github.com/obsproject/obs-studio/actions/workflows/main.yml/badge.svg?branch=master&event=push :alt: OBS Studio Build Status - GitHub Actions :target: https://github.com/obsproject/obs-studio/actions/workflows/main.yml?query=event%3Apush+branch%3Amaster .. image:: https://badges.crowdin.net/obs-studio/localized.svg :alt: OBS Studio Translation Project Progress :target: https://crowdin.com/project/obs-studio .. image:: https://img.shields.io/discord/348973006581923840.svg?label=&logo=discord&logoColor=ffffff&color=7389D8&labelColor=6A7EC2 :alt: OBS Studio Discord Server :target: https://obsproject.com/discord What is OBS Studio? ------------------- OBS Studio is software designed for capturing, compositing, encoding, recording, and streaming video content, efficiently. It's distributed under the GNU General Public License v2 (or any later version) - see the accompanying COPYING file for more details. Quick Links ----------- - Website: https://obsproject.com - Help/Documentation/Guides: https://github.com/obsproject/obs-studio/wiki - Forums: https://obsproject.com/forum/ - Build Instructions: https://github.com/obsproject/obs-studio/wiki/Install-Instructions - Developer/API Documentation: https://obsproject.com/docs - Donating/backing/sponsoring: https://obsproject.com/contribute - Bug Tracker: https://github.com/obsproject/obs-studio/issues Contributing ------------ - If you would like to help fund or sponsor the project, you can do so via `Patreon <https://www.patreon.com/obsproject>`_, `OpenCollective <https://opencollective.com/obsproject>`_, or `PayPal <https://www.paypal.me/obsproject>`_. See our `contribute page <https://obsproject.com/contribute>`_ for more information. - If you wish to contribute code to the project, please make sure to read the coding and commit guidelines: https://github.com/obsproject/obs-studio/blob/master/CONTRIBUTING.rst - Developer/API documentation can be found here: https://obsproject.com/docs - If you wish to contribute translations, do not submit pull requests. Instead, please use Crowdin. For more information read this page: https://obsproject.com/wiki/How-To-Contribute-Translations-For-OBS - Other ways to contribute are by helping people out with support on our forums or in our community chat. Please limit support to topics you fully understand -- bad advice is worse than no advice. When it comes to something that you don't fully know or understand, please defer to the official help or official channels.