av1dec: Fix RefFrameSignBias calculation

Otherwise there are link errors:
LD      ffprobe_g
/usr/bin/ld: libavcodec/libavcodec.so: undefined reference to
`ff_dovi_rpu_generate'
/usr/bin/ld: libavcodec/libavcodec.so: undefined reference to
`ff_dovi_configure'
collect2: error: ld returned 1 exit status

Signed-off-by: Haihao Xiang <haihao.xiang@intel.com>
Reviewed-by: Jan Ekström <jeebjp@gmail.com>
Signed-off-by: James Almer <jamrial@gmail.com>

configure

@@ -3534,7 +3534,7 @@ libspeex_decoder_deps="libspeex"
 libspeex_encoder_deps="libspeex"
 libspeex_encoder_select="audio_frame_queue"
 libsvtav1_encoder_deps="libsvtav1"
-libsvtav1_encoder_select="dovi_rpueenc"
+libsvtav1_encoder_select="dovi_rpuenc"
 libtheora_encoder_deps="libtheora"
 libtwolame_encoder_deps="libtwolame"
 libuavs3d_decoder_deps="libuavs3d"
@@ -3554,7 +3554,7 @@ libx264_encoder_select="atsc_a53 golomb"
 libx264rgb_encoder_deps="libx264"
 libx264rgb_encoder_select="libx264_encoder"
 libx265_encoder_deps="libx265"
-libx265_encoder_select="atsc_a53 dovi_rpueenc"
+libx265_encoder_select="atsc_a53 dovi_rpuenc"
 libxavs_encoder_deps="libxavs"
 libxavs2_encoder_deps="libxavs2"
 libxevd_decoder_deps="libxevd"

libavcodec/av1dec.c

@@ -373,8 +373,13 @@ static void order_hint_info(AV1DecContext *s)
         int ref_order_hint = s->ref[ref_slot].order_hint;
 
         frame->order_hints[ref_name] = ref_order_hint;
-        frame->ref_frame_sign_bias[ref_name] =
-            get_relative_dist(seq, ref_order_hint, frame->order_hint);
+        if (!seq->enable_order_hint) {
+            frame->ref_frame_sign_bias[ref_name] = 0;
+        } else {
+            frame->ref_frame_sign_bias[ref_name] =
+                get_relative_dist(seq, ref_order_hint,
+                                  frame->order_hint) > 0;
+        }
     }
 }