New plugin, executor.

src/Output.php

@@ -11,8 +11,37 @@ class Output
         $this->filename = $filename;
     }
 
+    public function setFilenameFromInput(Input $input)
+    {
+        $filename = $input->getFilename();
+        $ext = pathinfo($filename, PATHINFO_EXTENSION);
+        $dir = dirname($filename);
+        $base = basename($filename, $ext);
+        $suggest = $dir.DIRECTORY_SEPARATOR.$base."vfx.".$ext;
+
+        $this->selectFile($suggest);
+    }
+
     public function getFilename()
     {
         return $this->filename;
     }
+
+    public function selectFile($suggest=null)
+    {
+        $cmdl = "zenity  --file-selection --title \"Select output file\" ";
+        $cmdl.= "--save --confirm-overwrite ";
+        if ($suggest) $cmdl.= "--filename=".escapeshellarg($suggest)." ";
+        $cmdl.= "--file-filter=\"Video files (mp4,m4v,avi,ogv,mkv)|*.mp4 *.m4v *.avi *.ogv *.mkv\" ";
+        $cmdl.= "--file-filter=\"Audio files (mp3,m4a,wav,ogg)|*.mp3 *.m4a *.wav *.ogg\" ";
+        $cmdl.= "--file-filter=\"All files|*\" 2>/dev/null";
+         
+        exec($cmdl, $out, $ret);
+        if ($ret == 0) {
+            $this->filename = trim(array_shift($out));
+            return true;
+        }
+        return false;
+    }
+
 }