diff-delta: allow reusing of the reference buffer index

[git.git] / delta.h

diff --git a/delta.h b/delta.h
index a15350d..00fef0b 100644 (file)
--- a/delta.h
+++ b/delta.h
@@ -4,7 +4,8 @@
 /* handling of delta buffers */
 extern void *diff_delta(void *from_buf, unsigned long from_size,
                        void *to_buf, unsigned long to_size,
-                       unsigned long *delta_size, unsigned long max_size);
+                       unsigned long *delta_size, unsigned long max_size,
+                       void **from_index);
 extern void *patch_delta(void *src_buf, unsigned long src_size,
                         void *delta_buf, unsigned long delta_size,
                         unsigned long *dst_size);