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Multimedia processing graphs
Detect what clients were started by the portal, and use the permission store to determine permissions of existing and future nodes. Clients are detected whether they are from the portal or not by comparing the PID of the client with the PID of the owner of the portal D-Bus name. It is assumed that the portal will set an appropriate app_id, and a comma seperated list of media roles (e.g. "Camera"), that should be queried. If app_id is an empty string, it's assumed to be a non-sandboxed client, and permissions are assumed to be allowing. |
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PipeWire
--------
PipeWire is a server and user space API to deal with multimedia
pipelines. This includes:
- Making available sources of video (such as from a capture devices or
application provided streams) and multiplexing this with
clients.
- Accessing sources of video for consumption.
- Generating graphs for audio and video processing.
Nodes in the graph can be implemented as separate processes,
communicating with sockets and exchanging multimedia content using fd
passing.
Building
--------
Pipewire uses the Meson and Ninja build system to compile. If you're not
familiar with these tools, the included "autogen.sh" script will
automatically run the correct meson/ninja commands, and output a Makefile.
It follows that there are two methods to build Pipewire, however both rely
on Meson and Ninja to actually perform the compilation:
$ ./autogen.sh
$ make
or the Meson/Ninja native method:
$ meson build
$ cd build
$ ninja