libvpx: Pull from upstream

source/libvpx/vp9/decoder/vp9_decodemv.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 159 matching lines @@
                                         : read_segment_id(r, seg);
   } else {
     segment_id = read_segment_id(r, seg);
   }
   set_segment_id(cm, bsize, mi_row, mi_col, segment_id);
   return segment_id;
 }
 
 static int read_skip(VP9_COMMON *cm, const MACROBLOCKD *xd,
                      int segment_id, vp9_reader *r) {
-  if (vp9_segfeature_active(&cm->seg, segment_id, SEG_LVL_SKIP)) {
+  if (segfeature_active(&cm->seg, segment_id, SEG_LVL_SKIP)) {
     return 1;
   } else {
     const int ctx = vp9_get_skip_context(xd);
     const int skip = vp9_read(r, cm->fc->skip_probs[ctx]);
     FRAME_COUNTS *counts = xd->counts;
     if (counts)
       ++counts->skip[ctx][skip];
     return skip;
   }
 }
@@ skipping 109 matching lines @@
   }
 }
 
 // Read the referncence frame
 static void read_ref_frames(VP9_COMMON *const cm, MACROBLOCKD *const xd,
                             vp9_reader *r,
                             int segment_id, MV_REFERENCE_FRAME ref_frame[2]) {
   FRAME_CONTEXT *const fc = cm->fc;
   FRAME_COUNTS *counts = xd->counts;
 
-  if (vp9_segfeature_active(&cm->seg, segment_id, SEG_LVL_REF_FRAME)) {
-    ref_frame[0] = (MV_REFERENCE_FRAME)vp9_get_segdata(&cm->seg, segment_id,
-                                                       SEG_LVL_REF_FRAME);
+  if (segfeature_active(&cm->seg, segment_id, SEG_LVL_REF_FRAME)) {
+    ref_frame[0] = (MV_REFERENCE_FRAME)get_segdata(&cm->seg, segment_id,
+                                                   SEG_LVL_REF_FRAME);
     ref_frame[1] = NONE;
   } else {
     const REFERENCE_MODE mode = read_block_reference_mode(cm, xd, r);
     // FIXME(rbultje) I'm pretty sure this breaks segmentation ref frame coding
     if (mode == COMPOUND_REFERENCE) {
       const int idx = cm->ref_frame_sign_bias[cm->comp_fixed_ref];
       const int ctx = vp9_get_pred_context_comp_ref_p(cm, xd);
       const int bit = vp9_read(r, fc->comp_ref_prob[ctx]);
       if (counts)
         ++counts->comp_ref[ctx][bit];
@@ skipping 114 matching lines @@
     }
     default: {
       return 0;
     }
   }
   return ret;
 }
 
 static int read_is_inter_block(VP9_COMMON *const cm, MACROBLOCKD *const xd,
                                int segment_id, vp9_reader *r) {
-  if (vp9_segfeature_active(&cm->seg, segment_id, SEG_LVL_REF_FRAME)) {
-    return vp9_get_segdata(&cm->seg, segment_id, SEG_LVL_REF_FRAME) !=
-           INTRA_FRAME;
+  if (segfeature_active(&cm->seg, segment_id, SEG_LVL_REF_FRAME)) {
+    return get_segdata(&cm->seg, segment_id, SEG_LVL_REF_FRAME) != INTRA_FRAME;
   } else {
     const int ctx = vp9_get_intra_inter_context(xd);
     const int is_inter = vp9_read(r, cm->fc->intra_inter_prob[ctx]);
     FRAME_COUNTS *counts = xd->counts;
     if (counts)
       ++counts->intra_inter[ctx][is_inter];
     return is_inter;
   }
 }
 
 static void fpm_sync(void *const data, int mi_row) {
   VP9Decoder *const pbi = (VP9Decoder *)data;
   vp9_frameworker_wait(pbi->frame_worker_owner, pbi->common.prev_frame,
                        mi_row << MI_BLOCK_SIZE_LOG2);
 }
 
 static void read_inter_block_mode_info(VP9Decoder *const pbi,
                                        MACROBLOCKD *const xd,
                                        const TileInfo *const tile,
                                        MODE_INFO *const mi,
                                        int mi_row, int mi_col, vp9_reader *r) {
   VP9_COMMON *const cm = &pbi->common;
   MB_MODE_INFO *const mbmi = &mi->mbmi;
   const BLOCK_SIZE bsize = mbmi->sb_type;
   const int allow_hp = cm->allow_high_precision_mv;
   int_mv nearestmv[2], nearmv[2];
-  int inter_mode_ctx, ref, is_compound;
+  int_mv ref_mvs[MAX_REF_FRAMES][MAX_MV_REF_CANDIDATES];
+  int ref, is_compound;
+  uint8_t inter_mode_ctx[MAX_REF_FRAMES];
 
   read_ref_frames(cm, xd, r, mbmi->segment_id, mbmi->ref_frame);
   is_compound = has_second_ref(mbmi);
 
   for (ref = 0; ref < 1 + is_compound; ++ref) {
     const MV_REFERENCE_FRAME frame = mbmi->ref_frame[ref];
     RefBuffer *ref_buf = &cm->frame_refs[frame - LAST_FRAME];
     xd->block_refs[ref] = ref_buf;
     if ((!vp9_is_valid_scale(&ref_buf->sf)))
       vpx_internal_error(xd->error_info, VPX_CODEC_UNSUP_BITSTREAM,
                          "Reference frame has invalid dimensions");
     vp9_setup_pre_planes(xd, ref, ref_buf->buf, mi_row, mi_col,
                          &ref_buf->sf);
-    vp9_find_mv_refs(cm, xd, tile, mi, frame, mbmi->ref_mvs[frame],
-                     mi_row, mi_col, fpm_sync, (void *)pbi);
+    vp9_find_mv_refs(cm, xd, tile, mi, frame, ref_mvs[frame],
+                     mi_row, mi_col, fpm_sync, (void *)pbi, inter_mode_ctx);
   }
 
-  inter_mode_ctx = mbmi->mode_context[mbmi->ref_frame[0]];
-
-  if (vp9_segfeature_active(&cm->seg, mbmi->segment_id, SEG_LVL_SKIP)) {
+  if (segfeature_active(&cm->seg, mbmi->segment_id, SEG_LVL_SKIP)) {
     mbmi->mode = ZEROMV;
     if (bsize < BLOCK_8X8) {
         vpx_internal_error(xd->error_info, VPX_CODEC_UNSUP_BITSTREAM,
                            "Invalid usage of segement feature on small blocks");
         return;
     }
   } else {
     if (bsize >= BLOCK_8X8)
-      mbmi->mode = read_inter_mode(cm, xd, r, inter_mode_ctx);
+      mbmi->mode = read_inter_mode(cm, xd, r,
+                                   inter_mode_ctx[mbmi->ref_frame[0]]);
   }
 
   if (bsize < BLOCK_8X8 || mbmi->mode != ZEROMV) {
     for (ref = 0; ref < 1 + is_compound; ++ref) {
-      vp9_find_best_ref_mvs(xd, allow_hp, mbmi->ref_mvs[mbmi->ref_frame[ref]],
+      vp9_find_best_ref_mvs(xd, allow_hp, ref_mvs[mbmi->ref_frame[ref]],
                             &nearestmv[ref], &nearmv[ref]);
     }
   }
 
   mbmi->interp_filter = (cm->interp_filter == SWITCHABLE)
                       ? read_switchable_interp_filter(cm, xd, r)
                       : cm->interp_filter;
 
   if (bsize < BLOCK_8X8) {
     const int num_4x4_w = num_4x4_blocks_wide_lookup[bsize];  // 1 or 2
     const int num_4x4_h = num_4x4_blocks_high_lookup[bsize];  // 1 or 2
     int idx, idy;
     PREDICTION_MODE b_mode;
     int_mv nearest_sub8x8[2], near_sub8x8[2];
     for (idy = 0; idy < 2; idy += num_4x4_h) {
       for (idx = 0; idx < 2; idx += num_4x4_w) {
         int_mv block[2];
         const int j = idy * 2 + idx;
-        b_mode = read_inter_mode(cm, xd, r, inter_mode_ctx);
+        b_mode = read_inter_mode(cm, xd, r, inter_mode_ctx[mbmi->ref_frame[0]]);
 
-        if (b_mode == NEARESTMV || b_mode == NEARMV)
+        if (b_mode == NEARESTMV || b_mode == NEARMV) {
+          uint8_t dummy_mode_ctx[MAX_REF_FRAMES];
           for (ref = 0; ref < 1 + is_compound; ++ref)
             vp9_append_sub8x8_mvs_for_idx(cm, xd, tile, j, ref, mi_row, mi_col,
                                           &nearest_sub8x8[ref],
-                                          &near_sub8x8[ref]);
+                                          &near_sub8x8[ref],
+                                          dummy_mode_ctx);
+        }
 
         if (!assign_mv(cm, xd, b_mode, block, nearestmv,
                        nearest_sub8x8, near_sub8x8,
                        is_compound, allow_hp, r)) {
           xd->corrupted |= 1;
           break;
         };
 
         mi->bmi[j].as_mv[0].as_int = block[0].as_int;
         if (is_compound)
@@ skipping 43 matching lines @@
                         int mi_row, int mi_col, vp9_reader *r) {
   VP9_COMMON *const cm = &pbi->common;
   MODE_INFO *const mi = xd->mi[0];
   const int bw = num_8x8_blocks_wide_lookup[mi->mbmi.sb_type];
   const int bh = num_8x8_blocks_high_lookup[mi->mbmi.sb_type];
   const int x_mis = MIN(bw, cm->mi_cols - mi_col);
   const int y_mis = MIN(bh, cm->mi_rows - mi_row);
   MV_REF* frame_mvs = cm->cur_frame->mvs + mi_row * cm->mi_cols + mi_col;
   int w, h;
 
-  if (frame_is_intra_only(cm))
+  if (frame_is_intra_only(cm)) {
     read_intra_frame_mode_info(cm, xd, mi_row, mi_col, r);
-  else
+  } else {
     read_inter_frame_mode_info(pbi, xd, tile, mi_row, mi_col, r);
 
-  for (h = 0; h < y_mis; ++h) {
-    MV_REF *const frame_mv = frame_mvs + h * cm->mi_cols;
-    for (w = 0; w < x_mis; ++w) {
-      MV_REF *const mv = frame_mv + w;
-      mv->ref_frame[0] = mi->mbmi.ref_frame[0];
-      mv->ref_frame[1] = mi->mbmi.ref_frame[1];
-      mv->mv[0].as_int = mi->mbmi.mv[0].as_int;
-      mv->mv[1].as_int = mi->mbmi.mv[1].as_int;
+    for (h = 0; h < y_mis; ++h) {
+      MV_REF *const frame_mv = frame_mvs + h * cm->mi_cols;
+      for (w = 0; w < x_mis; ++w) {
+        MV_REF *const mv = frame_mv + w;
+        mv->ref_frame[0] = mi->mbmi.ref_frame[0];
+        mv->ref_frame[1] = mi->mbmi.ref_frame[1];
+        mv->mv[0].as_int = mi->mbmi.mv[0].as_int;
+        mv->mv[1].as_int = mi->mbmi.mv[1].as_int;
+      }
     }
   }
 }