Scaling shouldn't be part of the Source and instead should be done as a filter. Not only does supporting it drastically increase code complexity, it also doesn't add anything that is really necessary as you can do everything it did better in an actual transform.
Caching wasn't actually used except for scaling and was mostly broken too, causing flickering.
Getting the resolution of a source is very expensive in libOBS, as libOBS does not cache it and instead always calls into the filters and sources to determine the actual source. This also leads to potential lockups due to the filter list mutex being locked for the target source.
Therefore instead of calling it multiple times, cache the result of the call, if that result is even necessary. This reduces the need to synchronize lightly parallelized work (UI and libOBS code) and helps against the potential race condition in libOBS.
Caching the output of a source is only necessary for really expensive to render sources, so it is disabled by default now. Thanks to that, most Source Mirrors are now "free" instead of requiring two context switches and a texture, while those really expensive can be manually set to cache.
The scaling mode is also set to disabled instead of point when rescaling is off to further improve performance. The previous method would incorrectly cause an extra texture to be used.
Additionally we now have support for debug markers for graphics debugging, allowing us to exactly tell apart improvements in rendering cost for this source.
This is a massive improvement to stability and safety when using the plugin, as all exceptions should now no longer be leaked into C controlled code, which can't actually handle exceptions at all.
Warnings fixed:
* Potentially throwing exception during library load.
* Possibly throwing function passed to C.
* Statement does nothing.
* Variable is initialized but not referenced.
* Variable overloads variable in parent scope.
Adds a new property to control the alignment of the source within the calculated boundary when rescaling the source. Also fixes the permanently left aligned mirror at the same time.
Clang on Windows and Clang on Linux behave differently, and of course GCC on Windows (MinGW) and GCC on Linux do too. This is the point where using either compiler on either platform should successfully compile the project without any issues.
Clang and GCC have a ton of warnings however, which definitely need to be fixed in the near future. Some of them are great warnings, like old C style casts, others are non-sense like suggest brackets.
Fixes#47Fixes#60
This fixes a dead lock due to attempting to lock the same filter mutex twice, causing libOBS to completely lock up on every mutex. This extends the fix for 4fc25cfd8d.
Additionally this switches to a proper queue system for audio, so we no longer cause audio stuttering or audio skipping.
The number of files in the source directory was a little bit much and just made file naming more complex than it had to be. Therefore all files were moved into subdirectories where it matters.
Filters now reside in source/filters/, Sources in source/sources/, OBS Wrappers in obs/, OBS GS Wrappers in obs/gs/, Transitions will reside in source/transitions, Graphics Helpers will be in gfx/.
