Define some functions and responsabilities for image generation.

Still very preliminary work.

src/writer.h

@@ -0,0 +1,31 @@
+/*
+ * Copyright (c) 2007 Vreixo Formoso
+ * 
+ * This file is part of the libisofs project; you can redistribute it and/or 
+ * modify it under the terms of the GNU General Public License version 2 as 
+ * published by the Free Software Foundation. See COPYING file for details.
+ */
+#ifndef LIBISO_IMAGE_WRITER_H_
+#define LIBISO_IMAGE_WRITER_H_
+
+#include "ecma119.h"
+
+struct Iso_Image_Writer
+{
+    /**
+     * 
+     */
+    int (*compute_data_blocks)(IsoImageWriter *writer);
+    
+    int (*write_vol_desc)(IsoImageWriter *writer, int fd);
+    
+    int (*write_data)(IsoImageWriter *writer, int fd);
+    
+    int (*free_data)(IsoImageWriter *writer);
+    
+    void *data;
+    Ecma119Image *image;
+    IsoImageWriter *next;
+};
+
+#endif /*LIBISO_IMAGE_WRITER_H_*/