requesthandler: Add SplitRecordFile request

src/requesthandler/RequestHandler.cpp

@@ -177,6 +177,7 @@ const std::unordered_map<std::string, RequestMethodHandler> RequestHandler::_han
 	{"ToggleRecordPause", &RequestHandler::ToggleRecordPause},
 	{"PauseRecord", &RequestHandler::PauseRecord},
 	{"ResumeRecord", &RequestHandler::ResumeRecord},
+	{"SplitRecordFile", &RequestHandler::SplitRecordFile},
 
 	// Media Inputs
 	{"GetMediaInputStatus", &RequestHandler::GetMediaInputStatus},

src/requesthandler/RequestHandler.h

@@ -196,6 +196,7 @@ private:
 	RequestResult ToggleRecordPause(const Request &);
 	RequestResult PauseRecord(const Request &);
 	RequestResult ResumeRecord(const Request &);
+	RequestResult SplitRecordFile(const Request &);
 
 	// Media Inputs
 	RequestResult GetMediaInputStatus(const Request &);

src/requesthandler/RequestHandler_Record.cpp

@@ -189,3 +189,25 @@ RequestResult RequestHandler::ResumeRecord(const Request &)
 
 	return RequestResult::Success();
 }
+
+/**
+ * Splits the current file being recorded into a new file.
+ *
+ * @requestType SplitRecordFile
+ * @complexity 2
+ * @rpcVersion -1
+ * @initialVersion 5.5.0
+ * @api requests
+ * @category record
+ */
+RequestResult RequestHandler::SplitRecordFile(const Request &)
+{
+	if (!obs_frontend_recording_active())
+		return RequestResult::Error(RequestStatus::OutputNotRunning);
+
+	if (!obs_frontend_recording_split_file())
+		return RequestResult::Error(RequestStatus::RequestProcessingFailed,
+					    "Verify that file splitting is enabled in the output settings.");
+
+	return RequestResult::Success();
+}