Add convert function to script

scriptengine.h

@@ -5,6 +5,7 @@
 #include <QJSEngine>
 #include <QFileInfo>
 #include <QThread>
+#include <QThreadPool>
 #include "database.h"
 
 namespace Script
@@ -17,6 +18,7 @@ class ScriptEngine : public QObject
     Q_OBJECT
     QJSEngine *_jsEngine;
     Database *_database;
+    QThreadPool *_pool;
     QString _scriptPath;
     QString _outputDir;
     QStringList _paths;
@@ -31,6 +33,7 @@ public:
     Q_INVOKABLE void mark(File *file);
     Q_INVOKABLE void unmark(File *file);
     Q_INVOKABLE bool isMarked(const File *file) const;
+    Q_INVOKABLE bool convert(File *file, QString &outpath, QJSValue &params);
     QJSValue newObject();
 public slots:
     void run();