Add -ipc option to control gpu-screen-recorder over a unix domain socket

The socket accepts the same commands as the signal handlers, except that
saving a replay takes an arbitrary number of seconds instead of only the
fixed times that the signals provide. Requests and replies are newline
terminated json objects and every request is replied to, parsed with the
sj.h json library that was added to external.
Requests are handled on a thread that only runs while the recorder
exists, so the recorder control fields are now atomics, which they have
to be now that another thread writes them.

1 files changed, 1 insertions, 0 deletions

diff --git a/meson.build b/meson.build
index 0653470..bddfc02 100644
--- a/meson.build
+++ b/meson.build
@@ -46,6 +46,7 @@ src = [
     'src/recorder/screenshot.c',
     'src/recorder/recorder.c',
     'src/cli/commands.c',
+    'src/cli/ipc.c',
     'src/egl.c',
     'src/cuda.c',
     'src/window_texture.c',