media: support OpenGL-based video playback on macOS
If we have GStreamer on macOS we likely have support for CGL to get an OpenGL context we can use. This provides the missing pieces to get accelerated video playback in gtk4-widget-factory working.
If we have GStreamer on macOS we likely have support for CGL to get an OpenGL context we can use. This provides the missing pieces to get accelerated video playback in gtk4-widget-factory working.