PatTheMav 03c42e5b93 mac-avcapture: Fix crash issues on Intel-based Macs and older macOS
Fixes several possible crash issues that might occur on Intel-based Macs
and older macOS versions:

On modern macOS versions (13+) allocated memory is zero-allocated by
default which makes NULL pointer checks work correctly after allocation.

On older macOS versions this is not the case, so the OBSAVCaptureInfo
struct needs to be zero-allocated to ensure the guards in the tick and
render functions bail out correctly.

On Intel-based Macs and/or older macOS versions passing a reference to
the OBSAVCapture instance inside the OBSAVCapture struct can lead to a
crash because of a possible circular reference that cannot be resolved
at runtime.

Passing only a reference of the OBSAVCapture to libobs and incrementing
the retain count at source creation (decrementing in when the source is
destroyed) avoids this issue entirely.
2024-02-20 17:57:09 -05:00
2024-02-13 15:44:29 -05:00
2021-11-25 20:59:11 +11:00
2023-05-20 01:31:18 -07:00
2024-01-29 20:47:38 +00:00
2021-10-24 00:35:27 -07:00
2018-07-14 08:21:00 +01:00

OBS Studio <https://obsproject.com>
===================================

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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.
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