Added dark frame subtraction

Moved debayer and preprocessing parameters to class ProcParams for every single image.
Added tab RAW for changing those parameters.
Progress bar shows only load step (work to do)

rtgui/procthread.h

@@ -0,0 +1,78 @@
+/*
+ *  This file is part of RawTherapee.
+ *
+ *  Copyright (c) 2004-2010 Gabor Horvath <hgabor@rawtherapee.com>
+ *
+ *  RawTherapee 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 3 of the License, or
+ *  (at your option) any later version.
+ * 
+ *  RawTherapee 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 RawTherapee.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#ifndef _PROCTHREAD_
+#define _PROCTHREAD_
+
+#include <gtkmm.h>
+
+template <class T>
+class ProcessingThread {
+
+  protected:
+    bool tostop;
+    bool stopped;
+    std::list<T> jqueue;
+    Glib::Thread* thread;
+    bool fifo;
+
+  public:
+    ProcessingThread () : tostop(false), stopped(true), fifo(true) {}
+    void init () { tostop = false; stopped = true; }
+    void add (T de) { jqueue.push_back (de); }
+    void removejobs () { while (!jqueue.empty()) jqueue.pop_front (); }
+    void stop () { if (stopped) { tostop = true; return; } gdk_threads_leave(); tostop = true; Glib::Thread::self()->yield(); if (!stopped) thread->join (); gdk_threads_enter();}
+    
+    virtual void start () {}
+    virtual void process (T& e) {}
+    virtual void processCustomOrder () {}
+    virtual void end () {}
+
+    void process () { 
+        if (stopped)
+            #undef THREAD_PRIORITY_NORMAL
+            thread = Glib::Thread::create(sigc::mem_fun(*this, &ProcessingThread::process_), (unsigned long int)0, true, true, Glib::THREAD_PRIORITY_NORMAL);
+    }
+    void process_ () { 
+        stopped = false;
+        tostop = false;
+    
+        start ();     //   jqueue.sort ();
+
+
+        while (!tostop && !jqueue.empty ()) {
+            if (fifo) {
+                T current = jqueue.front ();
+                jqueue.pop_front ();
+                process (current);
+            }
+            else
+                processCustomOrder ();
+        }
+        stopped = true;
+        end ();
+    }
+    
+    bool runs () { return !stopped; }
+    
+    void terminate () { stop (); removejobs (); }
+    
+    int numOfJobs () { return jqueue.size(); }
+};
+
+#endif