6 files changed, 9 insertions, 3 deletions
diff --git a/include/fitz/cmap.h b/include/fitz/cmap.h
index b076d749..768d896a 100644
--- a/include/fitz/cmap.h
+++ b/include/fitz/cmap.h
@@ -2,6 +2,7 @@ typedef struct fz_cmap_s fz_cmap;
 
 fz_error *fz_newcmap(fz_cmap **cmapp);
 void fz_debugcmap(fz_cmap *cmap);
+fz_cmap *fz_keepcmap(fz_cmap *cmap);
 void fz_dropcmap(fz_cmap *cmap);
 
 char *fz_getcmapname(fz_cmap *cmap);
diff --git a/include/fitz/colorspace.h b/include/fitz/colorspace.h
index 9b5a5dbb..ec4d019c 100644
--- a/include/fitz/colorspace.h
+++ b/include/fitz/colorspace.h
@@ -6,8 +6,8 @@ typedef struct fz_colorcube4_s fz_colorcube4;
 
 struct fz_colorspace_s
 {
+	int nrefs;
 	char name[16];
-	int frozen;
 	int n;
 	void (*toxyz)(fz_colorspace *, float *src, float *xyz);
 	void (*fromxyz)(fz_colorspace *, float *xyz, float *dst);
@@ -25,6 +25,7 @@ struct fz_colorcube_s
 	void **subcube;			/* dst->n * colorcube(src->n) */
 };
 
+fz_colorspace *fz_keepcolorspace(fz_colorspace *cs);
 void fz_dropcolorspace(fz_colorspace *cs);
 void fz_convertcolor(fz_colorspace *srcs, float *srcv, fz_colorspace *dsts, float *dstv);
 
diff --git a/include/fitz/font.h b/include/fitz/font.h
index a3caec7f..fb29e1c2 100644
--- a/include/fitz/font.h
+++ b/include/fitz/font.h
@@ -22,6 +22,7 @@ struct fz_vmtx_s
 
 struct fz_font_s
 {
+	int nrefs;
 	char name[32];
 
 	fz_error* (*render)(fz_glyph*, fz_font*, int, fz_matrix);
@@ -46,6 +47,7 @@ struct fz_glyph_s
 };
 
 void fz_initfont(fz_font *font, char *name);
+fz_font *fz_keepfont(fz_font *font);
 void fz_dropfont(fz_font *font);
 void fz_debugfont(fz_font *font);
 void fz_setfontwmode(fz_font *font, int wmode);
diff --git a/include/fitz/image.h b/include/fitz/image.h
index cfbba169..6debfaa5 100644
--- a/include/fitz/image.h
+++ b/include/fitz/image.h
@@ -4,11 +4,13 @@ typedef struct fz_image_s fz_image;
 
 struct fz_image_s
 {
+	int nrefs;
 	fz_error* (*loadtile)(fz_image*,fz_pixmap*);
 	void (*drop)(fz_image*);
 	fz_colorspace *cs;
 	int w, h, n, a;
 };
 
+fz_image *fz_keepimage(fz_image *img);
 void fz_dropimage(fz_image *img);
 
diff --git a/include/fitz/object.h b/include/fitz/object.h
index d24b8a7a..014dc33d 100644
--- a/include/fitz/object.h
+++ b/include/fitz/object.h
@@ -71,7 +71,7 @@ fz_error *fz_deepcopyarray(fz_obj **op, fz_obj *array);
 fz_error *fz_deepcopydict(fz_obj **op, fz_obj *dict);
 
 fz_obj *fz_keepobj(fz_obj *obj);
-fz_obj *fz_dropobj(fz_obj *obj);
+void fz_dropobj(fz_obj *obj);
 
 /* type queries */
 int fz_isnull(fz_obj *obj);
diff --git a/include/fitz/tree.h b/include/fitz/tree.h
index a14de20d..af9fc36c 100644
--- a/include/fitz/tree.h
+++ b/include/fitz/tree.h
@@ -3,7 +3,7 @@ typedef struct fz_node_s fz_node;
 
 struct fz_tree_s
 {
-	int refcount;
+	int nrefs;
 	fz_node *root;
 	fz_node *head;
 };