shithub: libvpx

Download patch

ref: 2b5ab8095e43ec53adb8a0c002883c711a8557fe
parent: 9aa083d164e0d39086aa0c83f0d1a0d0f0d1ba61
author: Marco <marpan@google.com>
date: Mon Mar 7 04:50:36 EST 2016 

vp9-svc: Non-rd pickmode, fix condition for testing zeromv for spatial ref.

Change-Id: I75bad321d5814a6df6735a8ead7700ab93b50763


--- a/vp9/encoder/vp9_pickmode.c
+++ b/vp9/encoder/vp9_pickmode.c
@@ -1279,14 +1279,21 @@
     usable_ref_frame = GOLDEN_FRAME;
   }
 
-  // If the reference is temporally aligned with current superframe
-  // (e.g., spatial reference within superframe), constrain the inter mode:
-  // for now only test zero motion.
-  if (cpi->use_svc && svc ->force_zero_mode_spatial_ref) {
-    if (svc->ref_frame_index[cpi->lst_fb_idx] == svc->current_superframe)
-      svc_force_zero_mode[LAST_FRAME - 1] = 1;
-    if (svc->ref_frame_index[cpi->gld_fb_idx] == svc->current_superframe)
-      svc_force_zero_mode[GOLDEN_FRAME - 1] = 1;
+  // For svc mode, on spatial_layer_id > 0: if the reference has different scale
+  // constrain the inter mode to only test zero motion.
+  if (cpi->use_svc &&
+      svc ->force_zero_mode_spatial_ref &&
+      cpi->svc.spatial_layer_id > 0) {
+    if (cpi->ref_frame_flags & flag_list[LAST_FRAME]) {
+      struct scale_factors *const sf = &cm->frame_refs[LAST_FRAME - 1].sf;
+      if (vp9_is_scaled(sf))
+        svc_force_zero_mode[LAST_FRAME - 1] = 1;
+    }
+    if (cpi->ref_frame_flags & flag_list[GOLDEN_FRAME]) {
+      struct scale_factors *const sf = &cm->frame_refs[GOLDEN_FRAME - 1].sf;
+      if (vp9_is_scaled(sf))
+        svc_force_zero_mode[GOLDEN_FRAME - 1] = 1;
+    }
   }
 
   for (ref_frame = LAST_FRAME; ref_frame <= usable_ref_frame; ++ref_frame) {
-- 
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