refactored c extensions into one

src/overviewer.h

@@ -0,0 +1,39 @@
+/* 
+ * This file is part of the Minecraft Overviewer.
+ *
+ * Minecraft Overviewer 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.
+ *
+ * Minecraft Overviewer 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 the Overviewer.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * This is a general include file for the Overviewer C extension. It
+ * lists useful, defined functions as well as those that are exported
+ * to python, so all files can use them.
+ */
+
+#ifndef __OVERVIEWER_H_INCLUDED__
+#define __OVERVIEWER_H_INCLUDED__
+
+/* Python and PIL headers */
+#include <Python.h>
+#include <Imaging.h>
+
+/* in composite.c */
+Imaging imaging_python_to_c(PyObject* obj);
+PyObject* alpha_over(PyObject* dest, PyObject* src, PyObject* mask, int dx, int dy, int xsize, int ysize);
+PyObject* alpha_over_wrap(PyObject* self, PyObject* args);
+
+/* in iterate.c */
+PyObject* chunk_render(PyObject *self, PyObject *args);
+
+#endif /* __OVERVIEWER_H_INCLUDED__ */