They are currently not used, but would result in a compiler error due to wrong
variable name usage.
https://bugzilla.gnome.org/show_bug.cgi?id=766203
(G_TYPE_INSTANCE_GET_CLASS((obj),GST_TYPE_VIDEO_DECODER,GstVideoDecoderClass))
#define GST_IS_VIDEO_DECODER(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_VIDEO_DECODER))
-#define GST_IS_VIDEO_DECODER_CLASS(obj) \
+#define GST_IS_VIDEO_DECODER_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_VIDEO_DECODER))
#define GST_VIDEO_DECODER_CAST(obj) ((GstVideoDecoder *)(obj))
(G_TYPE_INSTANCE_GET_CLASS((obj),GST_TYPE_VIDEO_ENCODER,GstVideoEncoderClass))
#define GST_IS_VIDEO_ENCODER(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_VIDEO_ENCODER))
-#define GST_IS_VIDEO_ENCODER_CLASS(obj) \
+#define GST_IS_VIDEO_ENCODER_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_VIDEO_ENCODER))
#define GST_VIDEO_ENCODER_CAST(enc) ((GstVideoEncoder*)enc)