libvpx: Pull from upstream

source/libvpx/vp9/common/vp9_entropymode.c

 /*
  *  Copyright (c) 2010 The WebM project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 332 matching lines @@
 
 static void adapt_probs(const vp9_tree_index *tree,
                         const vp9_prob *pre_probs, const unsigned int *counts,
                         vp9_prob *probs) {
   vp9_tree_merge_probs(tree, pre_probs, counts, COUNT_SAT, MAX_UPDATE_FACTOR,
                    probs);
 }
 
 void vp9_adapt_mode_probs(VP9_COMMON *cm) {
   int i, j;
-  FRAME_CONTEXT *fc = &cm->fc;
+  FRAME_CONTEXT *fc = cm->fc;
   const FRAME_CONTEXT *pre_fc = &cm->frame_contexts[cm->frame_context_idx];
   const FRAME_COUNTS *counts = &cm->counts;
 
   for (i = 0; i < INTRA_INTER_CONTEXTS; i++)
     fc->intra_inter_prob[i] = adapt_prob(pre_fc->intra_inter_prob[i],
                                          counts->intra_inter[i]);
   for (i = 0; i < COMP_INTER_CONTEXTS; i++)
     fc->comp_inter_prob[i] = adapt_prob(pre_fc->comp_inter_prob[i],
                                         counts->comp_inter[i]);
   for (i = 0; i < REF_CONTEXTS; i++)
@@ skipping 80 matching lines @@
 
   // Reset the mode ref deltas for loop filter
   vp9_zero(lf->last_ref_deltas);
   vp9_zero(lf->last_mode_deltas);
   set_default_lf_deltas(lf);
 
   // To force update of the sharpness
   lf->last_sharpness_level = -1;
 
   vp9_default_coef_probs(cm);
-  vp9_init_mode_probs(&cm->fc);
+  vp9_init_mode_probs(cm->fc);
   vp9_init_mv_probs(cm);
 
   if (cm->frame_type == KEY_FRAME ||
       cm->error_resilient_mode || cm->reset_frame_context == 3) {
     // Reset all frame contexts.
     for (i = 0; i < FRAME_CONTEXTS; ++i)
-      cm->frame_contexts[i] = cm->fc;
+      cm->frame_contexts[i] = *cm->fc;
   } else if (cm->reset_frame_context == 2) {
     // Reset only the frame context specified in the frame header.
-    cm->frame_contexts[cm->frame_context_idx] = cm->fc;
+    cm->frame_contexts[cm->frame_context_idx] = *cm->fc;
   }
 
-  if (frame_is_intra_only(cm))
+  // prev_mip will only be allocated in encoder.
+  if (frame_is_intra_only(cm) && cm->prev_mip)
     vpx_memset(cm->prev_mip, 0, cm->mi_stride * (cm->mi_rows + 1) *
                                     sizeof(*cm->prev_mip));
 
   vpx_memset(cm->mip, 0, cm->mi_stride * (cm->mi_rows + 1) * sizeof(*cm->mip));
 
   vp9_zero(cm->ref_frame_sign_bias);
 
   cm->frame_context_idx = 0;
 }