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-rw-r--r--video/filter/vf_stereo3d.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/video/filter/vf_stereo3d.c b/video/filter/vf_stereo3d.c
index 51cfff8afa..3d29dcd8e8 100644
--- a/video/filter/vf_stereo3d.c
+++ b/video/filter/vf_stereo3d.c
@@ -36,6 +36,11 @@
#include "vf_lavfi.h"
+#include "config.h"
+#if !HAVE_GPL
+#error GPL only
+#endif
+
//==types==//
typedef enum stereo_code {
ANAGLYPH_RC_GRAY, //anaglyph red/cyan gray