Requests: Add ProcessHotkeyByName

Adds a new request called `ProcessHotkeyByName` which calls the routine
associated with a given hotkey. The hotkey is identified by the unique
name set while registering it. Works with both OBS default hotkeys and
hotkeys added by plugins/scripts.

src/WSRequestHandler.cpp

@@ -43,6 +43,8 @@ const QHash<QString, RpcMethodHandler> WSRequestHandler::messageMap {
 
 	{ "BroadcastCustomMessage", &WSRequestHandler::BroadcastCustomMessage },
 
+	{ "ProcessHotkeyByName", &WSRequestHandler::ProcessHotkeyByName },
+
 	{ "SetCurrentScene", &WSRequestHandler::SetCurrentScene },
 	{ "GetCurrentScene", &WSRequestHandler::GetCurrentScene },
 	{ "GetSceneList", &WSRequestHandler::GetSceneList },

src/WSRequestHandler.h

@@ -61,6 +61,8 @@ class WSRequestHandler {
 
 		RpcResponse BroadcastCustomMessage(const RpcRequest&);
 
+		RpcResponse ProcessHotkeyByName(const RpcRequest&);
+
 		RpcResponse SetCurrentScene(const RpcRequest&);
 		RpcResponse GetCurrentScene(const RpcRequest&);
 		RpcResponse GetSceneList(const RpcRequest&);

src/WSRequestHandler_General.cpp

@@ -345,3 +345,24 @@ RpcResponse WSRequestHandler::OpenProjector(const RpcRequest& request) {
 	obs_frontend_open_projector(type, monitor, geometry, name);
 	return request.success();
 }
+
+/**
+* Executes hotkey routine, identified by hotkey unique name
+*
+* @param {String} `name` Unique name of the hotkey, as defined when registering the hotkey (e.g. "ReplayBuffer.Save")
+*
+* @api requests
+* @name ProcessHotkeyByName
+* @category general
+* @since unreleased
+*/
+RpcResponse WSRequestHandler::ProcessHotkeyByName(const RpcRequest& request) {
+	const char* name = obs_data_get_string(request.parameters(), "name");
+
+	obs_hotkey_t* hk = Utils::FindHotkeyByName(name);
+	if (!hk) {
+		return request.failed("Hotkey not found");
+	}
+	obs_hotkey_trigger_routed_callback(obs_hotkey_get_id(hk), true);
+	return request.success();
+}