Fixes a crash that can happen if you try to use the settings window
while in an even subloop, or if you try to close OBS while in an event
subloop. Continually retries (defers) the actions every one second
until the subloop has finished.
This new scale filter computes pixels by weighing the coverage area of
source pixels over the target pixel. This algorithm works well for both
upsampling and downsampling, but was mainly designed to upscale
high-quality low-resolution sources like RGB/HDMI retro consoles. I've
heard of people using odd workarounds like scaling up to very high
resolutions before scaling back down to preserve pixel shartpness. This
algorithm directly addresses this use-case in a much more direct
fashion.
The Area scale filter does a better job of preserving the thickness of
thin features than the Point filter.
The Area scale filter does not look at source pixels that lie outside
of the target pixel, leading to a much sharper image than Bilinear,
Bicubic, and Lanczos filters.
This filter should interpolate pixels in linear space, but OBS is not
equipped to do that at the moment.
libobs: Add GPU effect, and wire up scene serialization.
obs-filters: Add Area as an option for scale_filter.
UI: Add Area as an option for both scene items, and canvas downscaling.
Users don't realize that dockable windows can be closed (hidden) and can
be shown again via the View menu. This adds an explicit warning when
the user first closes a dockable window for their first time. In future
versions, this should be changed to a dialog box with a "Do not show
again" checkbox.
Allows the ability to use invokeMethod on the OBSApp object to execute
an std::function. This allows deferring an std::function call to the Qt
event queue.
In commit d17ee20863, we attempted to fix a race condition crash in the
Logitech plugin by deferring the "stream/recording/replay buffer active"
calls to the UI thread. However, the Logitech plugin loop_function
funciton can call obs_frontend_streaming_active/etc functions while the
UI thread waits for the loop_function thread for many OBS events,
causing a hard lock in the Logitech plugin. This fixes that by making
the obs_frontend_streaming_active/etc functions completely atomic
instead. It's a bit of a hack but it's better than accessing objects.
