va: h264enc: Do not let L0 number surplus the HW limitation.

The algorithm to calculate the L0/L1 number may let the L0 number
surplus the HW limitation. We should ensure that limitation after
that calculation.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2202>

diff --git a/subprojects/gst-plugins-bad/sys/va/gstvah264enc.c b/subprojects/gst-plugins-bad/sys/va/gstvah264enc.c
index c0b61c8..082cdad 100644 (file)
--- a/subprojects/gst-plugins-bad/sys/va/gstvah264enc.c
+++ b/subprojects/gst-plugins-bad/sys/va/gstvah264enc.c
@@ -1123,6 +1123,9 @@ _generate_gop_structure (GstVaH264Enc * self)
       self->gop.ref_num_list0--;
       self->gop.ref_num_list1++;
     }
+
+    if (self->gop.ref_num_list0 > list0)
+      self->gop.ref_num_list0 = list0;
   }
 
   /* It's OK, keep slots for GST_VIDEO_CODEC_FRAME_IS_FORCE_KEYFRAME frame. */