decoder: h264: fix caps to report interlace-mode accordingly.

The `vaapipostproc' element could never determine if the H.264 stream
was interlaced, and thus always assumed it to be progressive. Fix the
H.264 decoder to report interlace-mode accordingly, thus allowing the
vaapipostproc element to automatically enable deinterlacing.

diff --git a/gst-libs/gst/vaapi/gstvaapidecoder_h264.c b/gst-libs/gst/vaapi/gstvaapidecoder_h264.c
index 82b8d15..1e709b5 100644 (file)
--- a/gst-libs/gst/vaapi/gstvaapidecoder_h264.c
+++ b/gst-libs/gst/vaapi/gstvaapidecoder_h264.c
@@ -1333,10 +1333,7 @@ ensure_context(GstVaapiDecoderH264 *decoder, GstH264SPS *sps)
     }
 
     priv->progressive_sequence = sps->frame_mbs_only_flag;
-#if 0
-    /* XXX: we only output complete frames for now */
     gst_vaapi_decoder_set_interlaced(base_decoder, !priv->progressive_sequence);
-#endif
 
     gst_vaapi_decoder_set_pixel_aspect_ratio(
         base_decoder,