From ed8a06bf65698573c0fcc2e871277efe20a6ac69 Mon Sep 17 00:00:00 2001
From: jp9000 <obs.jim@gmail.com>
Date: Sun, 6 Sep 2015 15:26:47 -0700
Subject: [PATCH] libobs: Add validity checks for obs objects

These functions are intended to log a warning when an obs function is
called with a null object.
---
 libobs/obs-internal.h | 34 ++++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)

diff --git a/libobs/obs-internal.h b/libobs/obs-internal.h
index 0b36d469d..716e1649f 100644
--- a/libobs/obs-internal.h
+++ b/libobs/obs-internal.h
@@ -48,6 +48,40 @@ struct draw_callback {
 	void *param;
 };
 
+/* ------------------------------------------------------------------------- */
+/* validity checks */
+
+static inline bool obs_object_valid(const void *obj, const char *f,
+		const char *t)
+{
+	if (!obj) {
+		blog(LOG_WARNING, "Null %s passed to %s!", t, f);
+		return false;
+	}
+
+	return true;
+}
+
+static inline bool obs_source_valid(const obs_source_t *obj, const char *f)
+{
+	return obs_object_valid(obj, f, "source");
+}
+
+static inline bool obs_output_valid(const obs_output_t *obj, const char *f)
+{
+	return obs_object_valid(obj, f, "output");
+}
+
+static inline bool obs_encoder_valid(const obs_encoder_t *obj, const char *f)
+{
+	return obs_object_valid(obj, f, "encoder");
+}
+
+static inline bool obs_service_valid(const obs_service_t *obj, const char *f)
+{
+	return obs_object_valid(obj, f, "service");
+}
+
 /* ------------------------------------------------------------------------- */
 /* modules */