scripting: add a way to run sub processes as "scripts"

This is just a more convenient way to start IPC client scripts per mpv
instance.

Does not work on Windows, although it could if the subprocess and IPC
parts are implemented (and I guess .exe/.bat suffixes are required).
Also untested whether it builds on Windows. A lot of other things are
untested too, so don't complain.

1 files changed, 6 insertions, 0 deletions

diff --git a/osdep/subprocess.c b/osdep/subprocess.c
index 8bb2acd0b7..8a930a60df 100644
--- a/osdep/subprocess.c
+++ b/osdep/subprocess.c
@@ -123,6 +123,12 @@ void mp_subprocess_detached(struct mp_log *log, char **args)
         talloc_free(p);
 }
 
+void mp_subprocess2(struct mp_subprocess_opts *opts,
+                    struct mp_subprocess_result *res)
+{
+    *res = (struct mp_subprocess_result){.error = MP_SUBPROCESS_EUNSUPPORTED};
+}
+
 #endif
 
 const char *mp_subprocess_err_str(int num)