While the current code only ever calls try_connect() with the input
argument 'device' in the range of 0 and MAX_DEVICES, this adds a check
to ensure that future code does not break the following sprintf.

In addition, use snprintf instead of sprintf to ensure that if anything
breaks, the sprintf does not lead to memory corruption. Again, the new
check should already make sure of that, but the additional effort of
using snprintf instead of sprintf is so low that it is worth to have a
little more security in the future.

Removes prior attempt to expose libcaption headers which really shouldnt
have public. This instead moves the obs-internal include out of the
public obs-scene.h and into it's implementation.

The same reasoning of the previous patch means we can also stop
force-disabling Qt/GLib integration.

After the recent CEF update, the GMainLoop-in-a-thread conflict seems to be
gone, which allows us to being back native dialogs.

In case no-one else initializes X11 locks do this as part of loading the
module.

Fixes #3479

Add PolyStreamer.com to services.json, and increment the version in
accompanying package.json

libobs directly depends on libcaption headers. So ensure they are
installed with obs' headers.

fixes #3925

Closes obsproject/obs-studio#3689

Closes obsproject/obs-studio#3689

Allows for identification of sources in studio mode

This also simplifies environment variable definitions

After cleaning up the native flags in various places, and disabling
making sibling of native widgets native, BrowserDock was left in an
inconsistent state, since it requires being native for CEF to work
properly.

Make BrowserDock native.

Some widgets are marked as native unnecessarily. Native widgets are
a bit more involving than regular ones, so remove this flag.

Original patch by David Edmundson <kde@davidedmundson.co.uk>

Native windows really only make sense for previews. They can be a new
xcb_window or a wayland subsurface.

For historical reasons setting a widget to native will also affect
ancestors. Qt will still draw them as part of the parent as they are
never mapped, but a window is nonetheless created.

This is especially problematic on wayland as then the subsurface is
parented to an unmapped window.

This default behaviour can be turned off. Now only the native widgets
(the video previews) are actually native.

The KDE images comes with the SDK needed pre-installed and should avoid re-downloading/installing it everytime. This should hopefully reduce the build time by a few minutes 

Details at https://github.com/bilelmoussaoui/flatpak-github-actions#docker-image

xcompcap was taking locks in the wrong order resulting in deadlocks on
close. If you had an xcompcap properties window open on close it was
nearly 100% deadlock. This ensures locks are taken in the same order as
libobs takes when shutting down.

This adds a function find module library.
Co-authored-by: NStéphane Lepin <stephane.lepin@gmail.com>

Add EventLive endpoint and recommended settings to list of RTMP
services. Bump rtmp-services/data/package.json version

Expand PATH for Debian-like systems.
Improve detection when the module is already loaded.

Sets thread names for the hotkey and v4l2 capture threads.

GLSL does not auto-promote float to vector where HLSL does.

Updates color handling with obsproject/obs-studio#2067

Linear color math

Also fix an existing stale texture crash when reseting to defaults.