[API] Simplify blob API, remove lock
diff --git a/src/hb-blob.h b/src/hb-blob.h
index 3ec35a8..f2eaae9 100644
--- a/src/hb-blob.h
+++ b/src/hb-blob.h
@@ -74,20 +74,21 @@
hb_user_data_key_t *key);
+void
+hb_blob_make_immutable (hb_blob_t *blob);
+
+hb_bool_t
+hb_blob_is_immutable (hb_blob_t *blob);
+
+
unsigned int
hb_blob_get_length (hb_blob_t *blob);
const char *
-hb_blob_lock (hb_blob_t *blob);
+hb_blob_get_data (hb_blob_t *blob, unsigned int *length);
-void
-hb_blob_unlock (hb_blob_t *blob);
-
-hb_bool_t
-hb_blob_is_writable (hb_blob_t *blob);
-
-hb_bool_t
-hb_blob_try_writable (hb_blob_t *blob);
+char *
+hb_blob_get_data_writable (hb_blob_t *blob, unsigned int *length);
HB_END_DECLS
