New API calls isoburn_ropt_set_data_cache(), isoburn_ropt_get_data_cache()

libisoburn/isoburn.h

@@ -263,7 +263,19 @@ int isoburn_get_msc2(struct isoburn *o,
 */
 IsoDataSource *
 isoburn_data_source_new(struct burn_drive *d,
-                         uint32_t displacement, int displacement_sign);
+                         uint32_t displacement, int displacement_sign,
+                         int cache_tiles, int tile_blocks);
+
+/** Default settings for above cache_tiles, tile_blocks in newly created
+    struct isoburn_read_opts.
+*/
+#define Libisoburn_default_cache_tileS 32
+#define Libisoburn_default_tile_blockS 32
+
+/** Maximum size of the cache in 2 kB blocks (1 GB)
+*/
+#define Libisoburn_cache_max_sizE (1024 * 512)
+
 
 /** Disable read capabilities of a data source which was originally created
     by isoburn_data_source_new(). After this any attempt to read will yield
@@ -298,6 +310,9 @@ int isoburn_root_defaults(IsoImage *image, int flag);
     minor correction only.)
  */
 struct isoburn_read_opts {
+    int cache_tiles; /* number of cache tiles */
+    int cache_tile_blocks;
+
     unsigned int norock:1; /*< Do not read Rock Ridge extensions */
     unsigned int nojoliet:1; /*< Do not read Joliet extensions */
     unsigned int noiso1999:1; /*< Do not read ISO 9660:1999 enhanced tree */