UI: Add replay buffer saved event to the frontend api (#3592)

* obs-frontend-api: add the event of saving replay buffer

Add OBS_FRONTEND_EVENT_REPLAY_BUFFER_SAVED as given by RFC 33

* UI: Emit the replay buffer saved event to the api

Send the OBS_FRONTEND_EVENT_REPLAY_BUFFER_SAVED to api (as in rfc33)

* docs/sphinx: Add replay buffer saved event

Documentation provided for OBS_FRONTEND_EVENT_REPLAY_BUFFER_SAVED (RFC33)

UI/obs-frontend-api/obs-frontend-api.h

@@ -37,6 +37,7 @@ enum obs_frontend_event {
 	OBS_FRONTEND_EVENT_REPLAY_BUFFER_STARTED,
 	OBS_FRONTEND_EVENT_REPLAY_BUFFER_STOPPING,
 	OBS_FRONTEND_EVENT_REPLAY_BUFFER_STOPPED,
+	OBS_FRONTEND_EVENT_REPLAY_BUFFER_SAVED,
 
 	OBS_FRONTEND_EVENT_STUDIO_MODE_ENABLED,
 	OBS_FRONTEND_EVENT_STUDIO_MODE_DISABLED,

UI/window-basic-main.cpp

@@ -6141,6 +6141,8 @@ void OBSBasic::ReplayBufferSave()
 		obs_output_get_proc_handler(outputHandler->replayBuffer);
 	proc_handler_call(ph, "save", &cd);
 	calldata_free(&cd);
+	if (api)
+		api->on_event(OBS_FRONTEND_EVENT_REPLAY_BUFFER_SAVED);
 }
 
 void OBSBasic::ReplayBufferStop(int code)

docs/sphinx/reference-frontend-api.rst

@@ -105,6 +105,10 @@ Structures/Enumerations
 
      Triggered when the replay buffer has fully stopped.
 
+   - **OBS_FRONTEND_EVENT_REPLAY_BUFFER_SAVED**
+
+     Triggered when the replay buffer has been saved.
+
    - **OBS_FRONTEND_EVENT_STUDIO_MODE_ENABLED**
 
      Triggered when the user has turned on studio mode.