Conditionally skip using inter frames in speed features

When the reference frame's scaling factor is not in the supported
range, skip using it for motion compensation prediction in the
partition speed features.

BUG=b/312517065

Change-Id: Ie3687186521ad2616be258e80d3e5b16e5f2d5e9

diff --git a/vp9/encoder/vp9_encodeframe.c b/vp9/encoder/vp9_encodeframe.c
index 63306ac..d0863b7 100644 (file)
--- a/vp9/encoder/vp9_encodeframe.c
+++ b/vp9/encoder/vp9_encodeframe.c
@@ -1301,6 +1301,13 @@ static int choose_partitioning(VP9_COMP *cpi, const TileInfo *const tile,
       (frame_is_intra_only(cm) ||
        (is_one_pass_svc(cpi) &&
         cpi->svc.layer_context[cpi->svc.temporal_layer_id].is_key_frame));
+
+  if (!is_key_frame) {
+    if (cm->frame_refs[LAST_FRAME - 1].sf.x_scale_fp == REF_INVALID_SCALE ||
+        cm->frame_refs[LAST_FRAME - 1].sf.y_scale_fp == REF_INVALID_SCALE)
+      is_key_frame = 1;
+  }
+
   // Always use 4x4 partition for key frame.
   const int use_4x4_partition = frame_is_intra_only(cm);
   const int low_res = (cm->width <= 352 && cm->height <= 288);