4508cb03b5
Currently we use a bool flag to signal the video thread that it should call obs_source_deferred_update. This does not work correctly when the update callback is slow and the update is triggered faster than the callback can complete. For example: * the settings are set to state A * defer_update is set * obs_source_deferred_update is called and enters into the callback * the callback starts making use of the settings in state A * the settings are set to state B * defer_update stays set * the callback finishes * defer_update is set to false Now defer_update is false but the callback has only observed settings in state A but not B. This commit fixes this bug by keeping an update counter. If the counter has changed while we were in the callback we know that we need to update again. The counter is atomic. The current version uses a plain bool which is a data race as the value is written and read in parallel.
OBS Studio <https://obsproject.com> =================================== .. image:: https://dev.azure.com/obsjim/obsjim/_apis/build/status/obsproject.obs-studio?branchName=master :alt: OBS Studio Build Status - Azure Pipelines :target: https://dev.azure.com/obsjim/obsjim/_build/latest?definitionId=1&branchName=master .. image:: https://d322cqt584bo4o.cloudfront.net/obs-studio/localized.svg :alt: OBS Studio Translation Project Progress :target: https://crowdin.com/project/obs-studio .. image:: https://discordapp.com/api/guilds/348973006581923840/widget.png?style=shield :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://obsproject.com/mantis/ (Note: The bug tracker is linked to forum accounts. To use the bug tracker, log in to a forum account) 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 thread: https://obsproject.com/forum/threads/how-to-contribute-translations-for-obs.16327/ - 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.