New API function isoburn_igopt_set_part_offset(), requiring libisofs 0.6.35

libisoburn/isoburn.h

@@ -36,10 +36,20 @@ int isoburn_toc_entry_new(struct isoburn_toc_entry **objpt,
 int isoburn_toc_entry_destroy(struct isoburn_toc_entry **o, int flag);
 
 
+/* >>> TWINTREE : provisory test of partition offset with emulated TOC.
+                  .target_iso_head must become dynamically allocated
+#define Libisoburn_partition_offseT 16
+*/
+
+
 /* Size of target_iso_head which is to be written during
    isoburn_activate_session()
 */
+#ifdef Libisoburn_partition_offseT
+#define Libisoburn_target_head_sizE (32*2048 +Libisoburn_partition_offseT*2048)
+#else
 #define Libisoburn_target_head_sizE (32*2048)
+#endif
 
 struct isoburn {
 
@@ -520,6 +530,17 @@ struct isoburn_imgen_opts {
        and timezone 0 */
     char vol_uuid[17];
 
+    /* TWINTREE: The number of unclaimed 2K blocks before
+                 start of partition 1 as of the MBR in system area.
+                 If not 0 this will cause double volume descriptor sets
+                 and double tree.
+    */
+    uint32_t partition_offset;
+    /* TWINTREE: Partition table parameter: 1 to 63, 0= disabled/default */
+    int partition_secs_per_head; 
+    /* TWINTREE: 1 to 255, 0= disabled/default */
+    int partition_heads_per_cyl;
+
 };