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-rw-r--r--vp9/common/vp9_blockd.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/vp9/common/vp9_blockd.h b/vp9/common/vp9_blockd.h
index 85b99c4bc..bc094101d 100644
--- a/vp9/common/vp9_blockd.h
+++ b/vp9/common/vp9_blockd.h
@@ -78,6 +78,9 @@ typedef struct MODE_INFO {
// Only for INTER blocks
INTERP_FILTER interp_filter;
+
+ // if ref_frame[idx] is equal to ALTREF_FRAME then
+ // MACROBLOCKD::block_ref[idx] is an altref
MV_REFERENCE_FRAME ref_frame[2];
// TODO(slavarnway): Delete and use bmi[3].as_mv[] instead.
@@ -154,6 +157,9 @@ typedef struct macroblockd {
int mi_stride;
+ // Grid of 8x8 cells is placed over the block.
+ // If some of them belong to the same mbtree-block
+ // they will just have same mi[i][j] value
MODE_INFO **mi;
MODE_INFO *left_mi;
MODE_INFO *above_mi;