From ef4142fe7523521a595cf351d51003212fd22f74 Mon Sep 17 00:00:00 2001
From: tt2468 <tt2468@gmail.com>
Date: Thu, 18 Jan 2024 15:53:37 -0800
Subject: [PATCH] eventhandler: Add `SourceFilterSettingsChanged` event

Closes #1059
---
 src/eventhandler/EventHandler.cpp         |  3 +++
 src/eventhandler/EventHandler.h           |  1 +
 src/eventhandler/EventHandler_Filters.cpp | 26 +++++++++++++++++++++++
 3 files changed, 30 insertions(+)

diff --git a/src/eventhandler/EventHandler.cpp b/src/eventhandler/EventHandler.cpp
index 0823076ff..aeb700730 100644
--- a/src/eventhandler/EventHandler.cpp
+++ b/src/eventhandler/EventHandler.cpp
@@ -602,6 +602,9 @@ void EventHandler::SourceUpdatedMultiHandler(void *param, calldata_t *data)
 	case OBS_SOURCE_TYPE_INPUT:
 		eventHandler->HandleInputSettingsChanged(source);
 		break;
+	case OBS_SOURCE_TYPE_FILTER:
+		eventHandler->HandleSourceFilterSettingsChanged(source);
+		break;
 	default:
 		break;
 	}
diff --git a/src/eventhandler/EventHandler.h b/src/eventhandler/EventHandler.h
index 2352d43a9..ed98787f0 100644
--- a/src/eventhandler/EventHandler.h
+++ b/src/eventhandler/EventHandler.h
@@ -147,6 +147,7 @@ class EventHandler {
 	void HandleSourceFilterRemoved(obs_source_t *source, obs_source_t *filter);
 	static void HandleSourceFilterNameChanged(void *param,
 						  calldata_t *data);                     // Direct callback
+	void HandleSourceFilterSettingsChanged(obs_source_t *source);
 	static void HandleSourceFilterEnableStateChanged(void *param, calldata_t *data); // Direct callback
 
 	// Outputs
diff --git a/src/eventhandler/EventHandler_Filters.cpp b/src/eventhandler/EventHandler_Filters.cpp
index 59c1783cc..103067881 100644
--- a/src/eventhandler/EventHandler_Filters.cpp
+++ b/src/eventhandler/EventHandler_Filters.cpp
@@ -163,6 +163,32 @@ void EventHandler::HandleSourceFilterNameChanged(void *param, calldata_t *data)
 	eventHandler->BroadcastEvent(EventSubscription::Filters, "SourceFilterNameChanged", eventData);
 }
 
+/**
+ * An source filter's settings have changed (been updated).
+ *
+ * @dataField sourceName     | String | Name of the source the filter is on
+ * @dataField filterName     | String | Name of the filter
+ * @dataField filterSettings | Object | New settings object of the filter
+ *
+ * @eventType SourceFilterSettingsChanged
+ * @eventSubscription Filters
+ * @complexity 3
+ * @rpcVersion -1
+ * @initialVersion 5.4.0
+ * @api events
+ * @category filters
+ */
+void EventHandler::HandleSourceFilterSettingsChanged(obs_source_t *source)
+{
+	OBSDataAutoRelease filterSettings = obs_source_get_settings(source);
+
+	json eventData;
+	eventData["sourceName"] = obs_source_get_name(obs_filter_get_parent(source));
+	eventData["filterName"] = obs_source_get_name(source);
+	eventData["filterSettings"] = Utils::Json::ObsDataToJson(filterSettings);
+	BroadcastEvent(EventSubscription::Filters, "SourceFilterSettingsChanged", eventData);
+}
+
 /**
  * A source filter's enable state has changed.
  *