client API: add a first class hook API, and deprecate old API

As it turns out, there are multiple libmpv users who saw a need to
use the hook API. The API is kind of shitty and was never meant to be
actually public (it was mostly a hack for the ytdl script).

Introduce a proper API and deprecate the old one. The old one will
probably continue to work for a few releases, but will be removed
eventually.

There are some slight changes to the old API, but if a user followed
the manual properly, it won't break.

Mostly untested. Appears to work with ytdl_hook.

1 files changed, 5 insertions, 2 deletions

diff --git a/player/command.h b/player/command.h
index 478bc8c737..2a102ddfbe 100644
--- a/player/command.h
+++ b/player/command.h
@@ -50,7 +50,7 @@ uint64_t mp_get_property_event_mask(const char *name);
 enum {
     // Must start with the first unused positive value in enum mpv_event_id
     // MPV_EVENT_* and MP_EVENT_* must not overlap.
-    INTERNAL_EVENT_BASE = 25,
+    INTERNAL_EVENT_BASE = 26,
     MP_EVENT_CHANGE_ALL,
     MP_EVENT_CACHE_UPDATE,
     MP_EVENT_WIN_RESIZE,
@@ -61,7 +61,10 @@ enum {
 };
 
 bool mp_hook_test_completion(struct MPContext *mpctx, char *type);
-void mp_hook_run(struct MPContext *mpctx, char *client, char *type);
+void mp_hook_run(struct MPContext *mpctx, char *type);
+int mp_hook_continue(struct MPContext *mpctx, char *client, uint64_t id);
+void mp_hook_add(struct MPContext *mpctx, const char *client, const char *name,
+                 uint64_t user_id, int pri, bool legacy);
 
 void mark_seek(struct MPContext *mpctx);