Removing last_mi from MACROBLOCKD struct.

Change-Id: Ied12b39c55667b26fd3bf90eb331e601c53a10f6

7 files changed, 11 insertions, 24 deletions

diff --git a/vp9/common/vp9_blockd.h b/vp9/common/vp9_blockd.h
index 84403ae15..b7fadcd3b 100644
--- a/vp9/common/vp9_blockd.h
+++ b/vp9/common/vp9_blockd.h
@@ -204,7 +204,6 @@ typedef struct RefBuffer {
 typedef struct macroblockd {
   struct macroblockd_plane plane[MAX_MB_PLANE];
 
-  MODE_INFO *last_mi;
   int mode_info_stride;
 
   // A NULL indicates that the 8x8 is not part of the image
diff --git a/vp9/common/vp9_mvref_common.c b/vp9/common/vp9_mvref_common.c
index d179f4289..9f2c2dfac 100644
--- a/vp9/common/vp9_mvref_common.c
+++ b/vp9/common/vp9_mvref_common.c
@@ -188,12 +188,13 @@ static INLINE int is_inside(const TileInfo *const tile,
 // to try and find candidate reference vectors.
 static void find_mv_refs_idx(const VP9_COMMON *cm, const MACROBLOCKD *xd,
                              const TileInfo *const tile,
-                             MODE_INFO *mi, const MODE_INFO *prev_mi,
-                             MV_REFERENCE_FRAME ref_frame,
+                             MODE_INFO *mi, MV_REFERENCE_FRAME ref_frame,
                              int_mv *mv_ref_list,
                              int block, int mi_row, int mi_col) {
   const int *ref_sign_bias = cm->ref_frame_sign_bias;
   int i, refmv_count = 0;
+  const MODE_INFO *prev_mi = cm->coding_use_prev_mi && cm->prev_mi ?
+                                 xd->prev_mi_8x8[0] : NULL;
   const POSITION *const mv_ref_search = mv_ref_blocks[mi->mbmi.sb_type];
   const MB_MODE_INFO *const prev_mbmi = cm->coding_use_prev_mi && prev_mi ?
       &prev_mi->mbmi : NULL;
@@ -282,11 +283,10 @@ static void find_mv_refs_idx(const VP9_COMMON *cm, const MACROBLOCKD *xd,
 
 void vp9_find_mv_refs(const VP9_COMMON *cm, const MACROBLOCKD *xd,
                                     const TileInfo *const tile,
-                                    MODE_INFO *mi, const MODE_INFO *prev_mi,
-                                    MV_REFERENCE_FRAME ref_frame,
+                                    MODE_INFO *mi, MV_REFERENCE_FRAME ref_frame,
                                     int_mv *mv_ref_list,
                                     int mi_row, int mi_col) {
-  find_mv_refs_idx(cm, xd, tile, mi, prev_mi, ref_frame, mv_ref_list, -1,
+  find_mv_refs_idx(cm, xd, tile, mi, ref_frame, mv_ref_list, -1,
                    mi_row, mi_col);
 }
 
@@ -324,8 +324,8 @@ void vp9_append_sub8x8_mvs_for_idx(VP9_COMMON *cm, MACROBLOCKD *xd,
 
   assert(MAX_MV_REF_CANDIDATES == 2);
 
-  find_mv_refs_idx(cm, xd, tile, mi, xd->last_mi, mi->mbmi.ref_frame[ref],
-                   mv_list, block, mi_row, mi_col);
+  find_mv_refs_idx(cm, xd, tile, mi, mi->mbmi.ref_frame[ref], mv_list, block,
+                   mi_row, mi_col);
 
   near->as_int = 0;
   switch (block) {
diff --git a/vp9/common/vp9_mvref_common.h b/vp9/common/vp9_mvref_common.h
index 04cb000ef..903ac02bb 100644
--- a/vp9/common/vp9_mvref_common.h
+++ b/vp9/common/vp9_mvref_common.h
@@ -31,10 +31,8 @@ static INLINE void clamp_mv2(MV *mv, const MACROBLOCKD *xd) {
 
 void vp9_find_mv_refs(const VP9_COMMON *cm, const MACROBLOCKD *xd,
                       const TileInfo *const tile,
-                      MODE_INFO *mi, const MODE_INFO *prev_mi,
-                      MV_REFERENCE_FRAME ref_frame,
-                      int_mv *mv_ref_list,
-                      int mi_row, int mi_col);
+                      MODE_INFO *mi, MV_REFERENCE_FRAME ref_frame,
+                      int_mv *mv_ref_list, int mi_row, int mi_col);
 
 // check a list of motion vectors by sad score using a number rows of pixels
 // above and a number cols of pixels in the left to select the one with best
diff --git a/vp9/decoder/vp9_decodeframe.c b/vp9/decoder/vp9_decodeframe.c
index 1e203b19f..27652b61e 100644
--- a/vp9/decoder/vp9_decodeframe.c
+++ b/vp9/decoder/vp9_decodeframe.c
@@ -346,10 +346,6 @@ static void set_offsets(VP9_COMMON *const cm, MACROBLOCKD *const xd,
 
   xd->mi_8x8 = cm->mi_grid_visible + offset;
   xd->prev_mi_8x8 = cm->prev_mi_grid_visible + offset;
-
-  xd->last_mi = cm->coding_use_prev_mi && cm->prev_mi ?
-      xd->prev_mi_8x8[0] : NULL;
-
   xd->mi_8x8[0] = xd->mi_stream + offset - tile_offset;
   xd->mi_8x8[0]->mbmi.sb_type = bsize;
   for (y = 0; y < y_mis; ++y)
diff --git a/vp9/decoder/vp9_decodemv.c b/vp9/decoder/vp9_decodemv.c
index 799a82af0..82f74ae0f 100644
--- a/vp9/decoder/vp9_decodemv.c
+++ b/vp9/decoder/vp9_decodemv.c
@@ -432,7 +432,7 @@ static void read_inter_block_mode_info(VP9_COMMON *const cm,
 
   for (ref = 0; ref < 1 + is_compound; ++ref) {
     const MV_REFERENCE_FRAME frame = mbmi->ref_frame[ref];
-    vp9_find_mv_refs(cm, xd, tile, mi, xd->last_mi, frame, mbmi->ref_mvs[frame],
+    vp9_find_mv_refs(cm, xd, tile, mi, frame, mbmi->ref_mvs[frame],
                      mi_row, mi_col);
   }
 
diff --git a/vp9/encoder/vp9_encodeframe.c b/vp9/encoder/vp9_encodeframe.c
index 10162096a..165c3908f 100644
--- a/vp9/encoder/vp9_encodeframe.c
+++ b/vp9/encoder/vp9_encodeframe.c
@@ -593,9 +593,6 @@ static void set_offsets(VP9_COMP *cpi, const TileInfo *const tile,
 
   xd->mi_8x8 = cm->mi_grid_visible + idx_str;
   xd->prev_mi_8x8 = cm->prev_mi_grid_visible + idx_str;
-
-  xd->last_mi = cm->prev_mi ? xd->prev_mi_8x8[0] : NULL;
-
   xd->mi_8x8[0] = cm->mi + idx_str;
 
   mbmi = &xd->mi_8x8[0]->mbmi;
@@ -2396,8 +2393,6 @@ static void encode_frame_internal(VP9_COMP *cpi) {
   // required for vp9_frame_init_quantizer
   xd->mi_8x8[0] = cm->mi;
 
-  xd->last_mi = cm->prev_mi;
-
   vp9_zero(cm->counts.mv);
   vp9_zero(cpi->coef_counts);
   vp9_zero(cm->counts.eob_branch);
diff --git a/vp9/encoder/vp9_rdopt.c b/vp9/encoder/vp9_rdopt.c
index 0542a3447..99a357980 100644
--- a/vp9/encoder/vp9_rdopt.c
+++ b/vp9/encoder/vp9_rdopt.c
@@ -2332,8 +2332,7 @@ void vp9_setup_buffer_inter(VP9_COMP *cpi, MACROBLOCK *x,
   setup_pred_block(xd, yv12_mb[ref_frame], yv12, mi_row, mi_col, sf, sf);
 
   // Gets an initial list of candidate vectors from neighbours and orders them
-  vp9_find_mv_refs(cm, xd, tile, mi, xd->last_mi, ref_frame, candidates,
-                   mi_row, mi_col);
+  vp9_find_mv_refs(cm, xd, tile, mi, ref_frame, candidates, mi_row, mi_col);
 
   // Candidate refinement carried out at encoder and decoder
   vp9_find_best_ref_mvs(xd, cm->allow_high_precision_mv, candidates,