add ROM export framework, part 1

src/engine/export.cpp

@@ -0,0 +1,37 @@
+/**
+ * Furnace Tracker - multi-system chiptune tracker
+ * Copyright (C) 2021-2023 tildearrow and contributors
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include "engine.h"
+
+#include "export/amigaValidation.h"
+
+std::vector<DivROMExportOutput> DivEngine::buildROM(DivROMExportOptions sys) {
+  DivROMExport* exporter=NULL;
+  switch (sys) {
+    case DIV_ROM_AMIGA_VALIDATION:
+      exporter=new DivExportAmigaValidation;
+      break;
+    default:
+      exporter=new DivROMExport;
+      break;
+  }
+  std::vector<DivROMExportOutput> ret=exporter->go(this);
+  delete exporter;
+  return ret;
+}