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-rw-r--r--libcrystfel/src/image.c2
-rw-r--r--libcrystfel/src/image.h1
2 files changed, 2 insertions, 1 deletions
diff --git a/libcrystfel/src/image.c b/libcrystfel/src/image.c
index 8de16bd5..de27308c 100644
--- a/libcrystfel/src/image.c
+++ b/libcrystfel/src/image.c
@@ -861,7 +861,7 @@ static int read_cbf(struct imagefile *f, struct image *image)
/****************************** Image files ***********************************/
-static signed int is_cbf_file(const char *filename)
+signed int is_cbf_file(const char *filename)
{
FILE *fh;
char line[1024];
diff --git a/libcrystfel/src/image.h b/libcrystfel/src/image.h
index c900bd29..99c3d57e 100644
--- a/libcrystfel/src/image.h
+++ b/libcrystfel/src/image.h
@@ -271,6 +271,7 @@ extern void imagefile_copy_fields(struct imagefile *f,
const struct imagefile_field_list *copyme,
FILE *fh, struct event *ev);
extern void imagefile_close(struct imagefile *f);
+extern signed int is_cbf_file(const char *filename);
/* Field lists */
extern struct imagefile_field_list *new_imagefile_field_list(void);