shithub: libvpx

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ref: 6910f178f1ca405157390abd6525d0bc81bcafb6
parent: 4c2c350309d65b1e46454464c87040bc60a03b8b
author: Jingning Han <jingning@google.com>
date: Sat May 11 11:19:56 EDT 2013 

Use consistent partition context setup in enc/dec

Move set_partition_seg_context_ to common file. Use consistent
context setup conditions for partition probability model update at
encoder and decoder.

Change-Id: I24b7ed3b1c48e3d2568191a46b70136b99b67b1a


--- a/vp9/common/vp9_onyxc_int.h
+++ b/vp9/common/vp9_onyxc_int.h
@@ -306,6 +306,13 @@
   return 2 * ((cm->mb_cols + 3) & ~3);
 }
 
+static INLINE void set_partition_seg_context(VP9_COMMON *cm,
+                                             MACROBLOCKD *xd,
+                                             int mi_row, int mi_col) {
+  xd->above_seg_context = cm->above_seg_context + mi_col;
+  xd->left_seg_context  = cm->left_seg_context + (mi_row & MI_MASK);
+}
+
 static void set_mi_row_col(VP9_COMMON *cm, MACROBLOCKD *xd,
                        int mi_row, int bh,
                        int mi_col, int bw) {
--- a/vp9/decoder/vp9_decodframe.c
+++ b/vp9/decoder/vp9_decodframe.c
@@ -476,12 +476,11 @@
       assert(0);
   }
   // update partition context
-  if ((partition == PARTITION_SPLIT) && (bsize > BLOCK_SIZE_MB16X16))
-    return;
-
-  xd->left_seg_context = pc->left_seg_context + (mi_row & MI_MASK);
-  xd->above_seg_context = pc->above_seg_context + mi_col;
-  update_partition_context(xd, subsize, bsize);
+  if (bsize > BLOCK_SIZE_SB8X8 &&
+      (bsize == BLOCK_SIZE_MB16X16 || partition != PARTITION_SPLIT)) {
+    set_partition_seg_context(pc, xd, mi_row, mi_col);
+    update_partition_context(xd, subsize, bsize);
+  }
 }
 
 static void setup_token_decoder(VP9D_COMP *pbi,
--- a/vp9/encoder/vp9_bitstream.c
+++ b/vp9/encoder/vp9_bitstream.c
@@ -915,12 +915,11 @@
   }
 
   // update partition context
-  if ((partition == PARTITION_SPLIT) && (bsize > BLOCK_SIZE_MB16X16))
-    return;
-
-  xd->left_seg_context = cm->left_seg_context + (mi_row & MI_MASK);
-  xd->above_seg_context = cm->above_seg_context + mi_col;
-  update_partition_context(xd, subsize, bsize);
+  if (bsize > BLOCK_SIZE_SB8X8 &&
+      (bsize == BLOCK_SIZE_MB16X16 || partition != PARTITION_SPLIT)) {
+    set_partition_seg_context(cm, xd, mi_row, mi_col);
+    update_partition_context(xd, subsize, bsize);
+  }
 }
 
 static void write_modes(VP9_COMP *cpi, vp9_writer* const bc,
--- a/vp9/encoder/vp9_encodeframe.c
+++ b/vp9/encoder/vp9_encodeframe.c
@@ -539,15 +539,6 @@
                    x->e_mbd.plane[2].subsampling_y);
 }
 
-static INLINE void set_partition_seg_context(VP9_COMP *cpi,
-                                             int mi_row, int mi_col) {
-  VP9_COMMON *const cm = &cpi->common;
-  MACROBLOCKD *const xd = &cpi->mb.e_mbd;
-
-  xd->above_seg_context = cm->above_seg_context + mi_col;
-  xd->left_seg_context  = cm->left_seg_context + (mi_row & MI_MASK);
-}
-
 static void set_offsets(VP9_COMP *cpi,
                         int mi_row, int mi_col, BLOCK_SIZE_TYPE bsize) {
   MACROBLOCK *const x = &cpi->mb;
@@ -571,7 +562,7 @@
   }
 
   // partition contexts
-  set_partition_seg_context(cpi, mi_row, mi_col);
+  set_partition_seg_context(cm, xd, mi_row, mi_col);
 
   // Activity map pointer
   x->mb_activity_ptr = &cpi->mb_activity_map[idx_map];
@@ -850,7 +841,7 @@
     return;
 
   if (bsize > BLOCK_SIZE_SB8X8) {
-    set_partition_seg_context(cpi, mi_row, mi_col);
+    set_partition_seg_context(cm, xd, mi_row, mi_col);
     pl = partition_plane_context(xd, bsize);
     c1 = *(get_sb_partitioning(x, bsize));
   }
@@ -899,7 +890,7 @@
 
   if (bsize > BLOCK_SIZE_SB8X8 &&
       (bsize == BLOCK_SIZE_MB16X16 || bsl == bwl || bsl == bhl)) {
-    set_partition_seg_context(cpi, mi_row, mi_col);
+    set_partition_seg_context(cm, xd, mi_row, mi_col);
     update_partition_context(xd, c1, bsize);
   }
 }
@@ -960,7 +951,7 @@
       r4 += r;
       d4 += d;
     }
-    set_partition_seg_context(cpi, mi_row, mi_col);
+    set_partition_seg_context(cm, xd, mi_row, mi_col);
     pl = partition_plane_context(xd, bsize);
     r4 += x->partition_cost[pl][PARTITION_SPLIT];
 
@@ -992,7 +983,7 @@
       if (mi_row + (ms >> 1) != cm->mi_rows)
         mb_skip = 1;
     }
-    set_partition_seg_context(cpi, mi_row, mi_col);
+    set_partition_seg_context(cm, xd, mi_row, mi_col);
     pl = partition_plane_context(xd, bsize);
     r2 += x->partition_cost[pl][PARTITION_HORZ];
 
@@ -1027,7 +1018,7 @@
       if (mi_col + (ms >> 1) != cm->mi_cols)
         mb_skip = 1;
     }
-    set_partition_seg_context(cpi, mi_row, mi_col);
+    set_partition_seg_context(cm, xd, mi_row, mi_col);
     pl = partition_plane_context(xd, bsize);
     r2 += x->partition_cost[pl][PARTITION_VERT];
 
@@ -1046,7 +1037,7 @@
     pick_sb_modes(cpi, mi_row, mi_col, tp, &r, &d, bsize,
                   get_block_context(x, bsize));
     if (bsize >= BLOCK_SIZE_MB16X16) {
-      set_partition_seg_context(cpi, mi_row, mi_col);
+      set_partition_seg_context(cm, xd, mi_row, mi_col);
       pl = partition_plane_context(xd, bsize);
       r += x->partition_cost[pl][PARTITION_NONE];
     }
-- 
⑨