shithub: libvpx

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ref: b8decb0313bf28bf83b4f201808d3128738024b1
parent: 9b94f647cd696782ad2040bdc5a409ff7bba504f
author: Jingning Han <jingning@google.com>
date: Wed May 1 10:35:07 EDT 2013

Fix bugs in sb8x8 experiment/context prob update

Fix bugs occur in contextual partition probability update, when
sb8x8 is enabled.

Change-Id: I19e2cec8a54c2dafd2be2803bbfde7337a2ae45f

--- a/vp9/common/vp9_blockd.h
+++ b/vp9/common/vp9_blockd.h
@@ -453,7 +453,7 @@
 static INLINE void update_partition_context(MACROBLOCKD *xd,
                                             BLOCK_SIZE_TYPE sb_type,
                                             BLOCK_SIZE_TYPE sb_size) {
-  int bsl = mi_width_log2(sb_size), bs = 1 << bsl;
+  int bsl = mi_width_log2(sb_size), bs;
   int bwl = mi_width_log2(sb_type);
   int bhl = mi_height_log2(sb_type);
   int boffset = mi_width_log2(BLOCK_SIZE_SB64X64) - bsl;
@@ -461,6 +461,12 @@
   // skip macroblock partition
   if (bsl == 0)
     return;
+
+#if CONFIG_SB8X8
+  bs = 1 << (bsl - 1);
+#else
+  bs = 1 << bsl;
+#endif
 
   // update the partition context at the end notes. set partition bits
   // of block sizes larger than the current one to be one, and partition