This adds a module
win_smtc which implements
SystemMediaTransportControls integration for Windows, and a config option
smtc to toggle this (enabled by default).
This uses C++/WinRT to consume the WinRT APIs needed. As partial mingw-w64 support (recent GCC and Clang, requires C++20) has recently been added to upstream cppwinrt, it is now functional enough to handle the simple APIs of
SystemMediaTransportControls. A copy of cppwinrt headers is downloaded in contrib.
"medium-jump-size" (untested as nothing seems to use it)
VideoLAN code repository instance