Add a guard on intra mode skip control for RTC mode

This commit adds a guard condition to the intra mode test skip
control in RTC coding mode. If all inter modes are skipped, force
the encoder to check intra mode. It avoids situations where the
encoder processes without properly assigning required mode
information.

Change-Id: Ibb349fee997d6584ce901d08b06e8df3ca9c01b1

diff --git a/vp9/encoder/vp9_pickmode.c b/vp9/encoder/vp9_pickmode.c
index 2a2de5b..319a478 100644 (file)
--- a/vp9/encoder/vp9_pickmode.c
+++ b/vp9/encoder/vp9_pickmode.c
@@ -837,8 +837,9 @@ void vp9_pick_inter_mode(VP9_COMP *cpi, MACROBLOCK *x,
 
   // Perform intra prediction search, if the best SAD is above a certain
   // threshold.
-  if (!x->skip && best_rdc.rdcost > inter_mode_thresh &&
-      bsize <= cpi->sf.max_intra_bsize) {
+  if (best_rdc.rdcost == INT64_MAX ||
+      (!x->skip && best_rdc.rdcost > inter_mode_thresh &&
+       bsize <= cpi->sf.max_intra_bsize)) {
     struct estimate_block_intra_args args = { cpi, x, DC_PRED, 0, 0 };
     const TX_SIZE intra_tx_size =
         MIN(max_txsize_lookup[bsize],