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-rw-r--r--vapi/gphoto.h18
1 files changed, 18 insertions, 0 deletions
diff --git a/vapi/gphoto.h b/vapi/gphoto.h
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+++ b/vapi/gphoto.h
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+/* Copyright 2009-2014 Yorba Foundation
+ *
+ * This software is licensed under the GNU LGPL (version 2.1 or later).
+ * See the COPYING file in this distribution.
+ */
+
+#ifndef GPHOTO_H
+#define GPHOTO_H
+
+#define GPHOTO_REF_CAMERA(c) (gp_camera_ref(c) == GP_OK ? c : NULL)
+
+#define GPHOTO_REF_FILE(c) (gp_file_ref(c) == GP_OK ? c : NULL)
+
+#define GPHOTO_REF_LIST(c) (gp_list_ref(c) == GP_OK ? c : NULL)
+
+#define GPHOTO_REF_CONTEXT(c) (gp_context_ref(c) == GP_OK ? c : NULL)
+
+#endif /* GPHOTO_H */