Second itteration of global undo system. Now based on:

- file-to-memory save
- incremental difference steps (compression)

everthing has been tightly coded to use minimum of memcpy or allocs. In
fact this system works with a single full buffer (=file) in memory, and undosteps as differences from it.
Speed gain is factor 4-8 faster. I've added it in CTRL+ALT+T timer menu for
a test. Please note the gain is especially in the undo-storing, not in
retrieving undo.

Also new: file read option to skip UI read (file menu). This now also is
default for the undo system.

1 files changed, 5 insertions, 1 deletions

diff --git a/source/blender/blenloader/BLO_readfile.h b/source/blender/blenloader/BLO_readfile.h
index 3093160139b..2c216f122cc 100644
--- a/source/blender/blenloader/BLO_readfile.h
+++ b/source/blender/blenloader/BLO_readfile.h
@@ -43,6 +43,7 @@ struct Main;
 struct UserDef;
 struct bScreen;
 struct Scene;
+struct MemFile;
 
 typedef struct BlendHandle	BlendHandle;
 
@@ -113,7 +114,7 @@ BlendFileData*	BLO_read_from_file		(char *file, BlendReadError *error_r);
 	 * code indicating the cause of the failure.
 	 * @return The data of the file.
 	 */
-BlendFileData*	BLO_read_from_memory	(void *mem, int memsize, BlendReadError *error_r);
+BlendFileData*	BLO_read_from_memory(void *mem, int memsize, BlendReadError *error_r);
 
 
 /**
@@ -124,6 +125,9 @@ BlendFileData*	BLO_read_from_memory	(void *mem, int memsize, BlendReadError *err
  * @return A static human readable string representation
  * of @a error.
  */
+ 
+BlendFileData *BLO_read_from_memfile(struct MemFile *memfile, BlendReadError *error_r);
+ 
 	char*
 BLO_bre_as_string(
 	BlendReadError error);