Removing direct references to VP9_COMP.

Change-Id: Ic37624d807884e71f08b50fd04892f03f2708ba7
diff --git a/vp9/common/vp9_pred_common.c b/vp9/common/vp9_pred_common.c
index cdf5fb9..0146384 100644
--- a/vp9/common/vp9_pred_common.c
+++ b/vp9/common/vp9_pred_common.c
@@ -366,7 +366,7 @@
   return (above_ctx + left_ctx) > max_tx_size;
 }
 
-int vp9_get_segment_id(VP9_COMMON *cm, const uint8_t *segment_ids,
+int vp9_get_segment_id(const VP9_COMMON *cm, const uint8_t *segment_ids,
                        BLOCK_SIZE bsize, int mi_row, int mi_col) {
   const int mi_offset = mi_row * cm->mi_cols + mi_col;
   const int bw = num_8x8_blocks_wide_lookup[bsize];
diff --git a/vp9/common/vp9_pred_common.h b/vp9/common/vp9_pred_common.h
index 1a7ba86..2c96506 100644
--- a/vp9/common/vp9_pred_common.h
+++ b/vp9/common/vp9_pred_common.h
@@ -26,7 +26,7 @@
   return xd->left_available ? xd->mi[-1] : NULL;
 }
 
-int vp9_get_segment_id(VP9_COMMON *cm, const uint8_t *segment_ids,
+int vp9_get_segment_id(const VP9_COMMON *cm, const uint8_t *segment_ids,
                        BLOCK_SIZE bsize, int mi_row, int mi_col);
 
 static INLINE int vp9_get_pred_context_seg_id(const MACROBLOCKD *xd) {
diff --git a/vp9/encoder/vp9_bitstream.c b/vp9/encoder/vp9_bitstream.c
index 4037955..c0ee200 100644
--- a/vp9/encoder/vp9_bitstream.c
+++ b/vp9/encoder/vp9_bitstream.c
@@ -78,13 +78,13 @@
     vp9_cond_prob_diff_update(w, &probs[i], branch_ct[i]);
 }
 
-static void write_selected_tx_size(const VP9_COMP *cpi,
+static void write_selected_tx_size(const VP9_COMMON *cm,
+                                   const MACROBLOCKD *xd,
                                    TX_SIZE tx_size, BLOCK_SIZE bsize,
                                    vp9_writer *w) {
   const TX_SIZE max_tx_size = max_txsize_lookup[bsize];
-  const MACROBLOCKD *const xd = &cpi->mb.e_mbd;
   const vp9_prob *const tx_probs = get_tx_probs2(max_tx_size, xd,
-                                                 &cpi->common.fc.tx_probs);
+                                                 &cm->fc.tx_probs);
   vp9_write(w, tx_size != TX_4X4, tx_probs[0]);
   if (tx_size != TX_4X4 && max_tx_size >= TX_16X16) {
     vp9_write(w, tx_size != TX_8X8, tx_probs[1]);
@@ -93,14 +93,13 @@
   }
 }
 
-static int write_skip(const VP9_COMP *cpi, int segment_id, const MODE_INFO *mi,
-                      vp9_writer *w) {
-  const MACROBLOCKD *const xd = &cpi->mb.e_mbd;
-  if (vp9_segfeature_active(&cpi->common.seg, segment_id, SEG_LVL_SKIP)) {
+static int write_skip(const VP9_COMMON *cm, const MACROBLOCKD *xd,
+                      int segment_id, const MODE_INFO *mi, vp9_writer *w) {
+  if (vp9_segfeature_active(&cm->seg, segment_id, SEG_LVL_SKIP)) {
     return 1;
   } else {
     const int skip = mi->mbmi.skip;
-    vp9_write(w, skip, vp9_get_skip_prob(&cpi->common, xd));
+    vp9_write(w, skip, vp9_get_skip_prob(cm, xd));
     return skip;
   }
 }
@@ -188,9 +187,8 @@
 }
 
 // This function encodes the reference frame
-static void write_ref_frames(const VP9_COMP *cpi, vp9_writer *w) {
-  const VP9_COMMON *const cm = &cpi->common;
-  const MACROBLOCKD *const xd = &cpi->mb.e_mbd;
+static void write_ref_frames(const VP9_COMMON *cm, const MACROBLOCKD *xd,
+                             vp9_writer *w) {
   const MB_MODE_INFO *const mbmi = &xd->mi[0]->mbmi;
   const int is_compound = has_second_ref(mbmi);
   const int segment_id = mbmi->segment_id;
@@ -252,7 +250,7 @@
     }
   }
 
-  skip = write_skip(cpi, segment_id, mi, w);
+  skip = write_skip(cm, xd, segment_id, mi, w);
 
   if (!vp9_segfeature_active(seg, segment_id, SEG_LVL_REF_FRAME))
     vp9_write(w, is_inter, vp9_get_intra_inter_prob(cm, xd));
@@ -260,7 +258,7 @@
   if (bsize >= BLOCK_8X8 && cm->tx_mode == TX_MODE_SELECT &&
       !(is_inter &&
         (skip || vp9_segfeature_active(seg, segment_id, SEG_LVL_SKIP)))) {
-    write_selected_tx_size(cpi, mbmi->tx_size, bsize, w);
+    write_selected_tx_size(cm, xd, mbmi->tx_size, bsize, w);
   }
 
   if (!is_inter) {
@@ -281,7 +279,7 @@
   } else {
     const int mode_ctx = mbmi->mode_context[mbmi->ref_frame[0]];
     const vp9_prob *const inter_probs = cm->fc.inter_mode_probs[mode_ctx];
-    write_ref_frames(cpi, w);
+    write_ref_frames(cm, xd, w);
 
     // If segment skip is not enabled code the mode.
     if (!vp9_segfeature_active(seg, segment_id, SEG_LVL_SKIP)) {
@@ -329,10 +327,8 @@
   }
 }
 
-static void write_mb_modes_kf(const VP9_COMP *cpi, MODE_INFO **mi_8x8,
-                              vp9_writer *w) {
-  const VP9_COMMON *const cm = &cpi->common;
-  const MACROBLOCKD *const xd = &cpi->mb.e_mbd;
+static void write_mb_modes_kf(const VP9_COMMON *cm, const MACROBLOCKD *xd,
+                              MODE_INFO **mi_8x8, vp9_writer *w) {
   const struct segmentation *const seg = &cm->seg;
   const MODE_INFO *const mi = mi_8x8[0];
   const MODE_INFO *const above_mi = mi_8x8[-xd->mi_stride];
@@ -343,10 +339,10 @@
   if (seg->update_map)
     write_segment_id(w, seg, mbmi->segment_id);
 
-  write_skip(cpi, mbmi->segment_id, mi, w);
+  write_skip(cm, xd, mbmi->segment_id, mi, w);
 
   if (bsize >= BLOCK_8X8 && cm->tx_mode == TX_MODE_SELECT)
-    write_selected_tx_size(cpi, mbmi->tx_size, bsize, w);
+    write_selected_tx_size(cm, xd, mbmi->tx_size, bsize, w);
 
   if (bsize >= BLOCK_8X8) {
     write_intra_mode(w, mbmi->mode, get_y_mode_probs(mi, above_mi, left_mi, 0));
@@ -382,7 +378,7 @@
                  mi_col, num_8x8_blocks_wide_lookup[m->mbmi.sb_type],
                  cm->mi_rows, cm->mi_cols);
   if (frame_is_intra_only(cm)) {
-    write_mb_modes_kf(cpi, xd->mi, w);
+    write_mb_modes_kf(cm, xd, xd->mi, w);
   } else {
     pack_inter_mode_mvs(cpi, m, w);
   }
@@ -739,11 +735,11 @@
   write_delta_q(wb, cm->uv_ac_delta_q);
 }
 
-static void encode_segmentation(VP9_COMP *cpi,
+static void encode_segmentation(VP9_COMMON *cm, MACROBLOCKD *xd,
                                 struct vp9_write_bit_buffer *wb) {
   int i, j;
 
-  struct segmentation *seg = &cpi->common.seg;
+  const struct segmentation *seg = &cm->seg;
 
   vp9_wb_write_bit(wb, seg->enabled);
   if (!seg->enabled)
@@ -753,7 +749,7 @@
   vp9_wb_write_bit(wb, seg->update_map);
   if (seg->update_map) {
     // Select the coding strategy (temporal or spatial)
-    vp9_choose_segmap_coding_method(cpi);
+    vp9_choose_segmap_coding_method(cm, xd);
     // Write out probabilities used to decode unpredicted  macro-block segments
     for (i = 0; i < SEG_TREE_PROBS; i++) {
       const int prob = seg->tree_probs[i];
@@ -1118,7 +1114,7 @@
 
   encode_loopfilter(&cm->lf, wb);
   encode_quantization(cm, wb);
-  encode_segmentation(cpi, wb);
+  encode_segmentation(cm, &cpi->mb.e_mbd, wb);
 
   write_tile_info(cm, wb);
 }
diff --git a/vp9/encoder/vp9_segmentation.c b/vp9/encoder/vp9_segmentation.c
index 897ae01..d5676c3 100644
--- a/vp9/encoder/vp9_segmentation.c
+++ b/vp9/encoder/vp9_segmentation.c
@@ -110,14 +110,12 @@
   return cost;
 }
 
-static void count_segs(VP9_COMP *cpi, const TileInfo *const tile,
-                       MODE_INFO **mi,
+static void count_segs(const VP9_COMMON *cm, MACROBLOCKD *xd,
+                       const TileInfo *tile, MODE_INFO **mi,
                        int *no_pred_segcounts,
                        int (*temporal_predictor_count)[2],
                        int *t_unpred_seg_counts,
                        int bw, int bh, int mi_row, int mi_col) {
-  VP9_COMMON *const cm = &cpi->common;
-  MACROBLOCKD *const xd = &cpi->mb.e_mbd;
   int segment_id;
 
   if (mi_row >= cm->mi_rows || mi_col >= cm->mi_cols)
@@ -151,14 +149,13 @@
   }
 }
 
-static void count_segs_sb(VP9_COMP *cpi, const TileInfo *const tile,
-                          MODE_INFO **mi,
+static void count_segs_sb(const VP9_COMMON *cm, MACROBLOCKD *xd,
+                          const TileInfo *tile, MODE_INFO **mi,
                           int *no_pred_segcounts,
                           int (*temporal_predictor_count)[2],
                           int *t_unpred_seg_counts,
                           int mi_row, int mi_col,
                           BLOCK_SIZE bsize) {
-  const VP9_COMMON *const cm = &cpi->common;
   const int mis = cm->mi_stride;
   int bw, bh;
   const int bs = num_8x8_blocks_wide_lookup[bsize], hbs = bs / 2;
@@ -170,18 +167,18 @@
   bh = num_8x8_blocks_high_lookup[mi[0]->mbmi.sb_type];
 
   if (bw == bs && bh == bs) {
-    count_segs(cpi, tile, mi, no_pred_segcounts, temporal_predictor_count,
+    count_segs(cm, xd, tile, mi, no_pred_segcounts, temporal_predictor_count,
                t_unpred_seg_counts, bs, bs, mi_row, mi_col);
   } else if (bw == bs && bh < bs) {
-    count_segs(cpi, tile, mi, no_pred_segcounts, temporal_predictor_count,
+    count_segs(cm, xd, tile, mi, no_pred_segcounts, temporal_predictor_count,
                t_unpred_seg_counts, bs, hbs, mi_row, mi_col);
-    count_segs(cpi, tile, mi + hbs * mis, no_pred_segcounts,
+    count_segs(cm, xd, tile, mi + hbs * mis, no_pred_segcounts,
                temporal_predictor_count, t_unpred_seg_counts, bs, hbs,
                mi_row + hbs, mi_col);
   } else if (bw < bs && bh == bs) {
-    count_segs(cpi, tile, mi, no_pred_segcounts, temporal_predictor_count,
+    count_segs(cm, xd, tile, mi, no_pred_segcounts, temporal_predictor_count,
                t_unpred_seg_counts, hbs, bs, mi_row, mi_col);
-    count_segs(cpi, tile, mi + hbs,
+    count_segs(cm, xd, tile, mi + hbs,
                no_pred_segcounts, temporal_predictor_count, t_unpred_seg_counts,
                hbs, bs, mi_row, mi_col + hbs);
   } else {
@@ -194,7 +191,7 @@
       const int mi_dc = hbs * (n & 1);
       const int mi_dr = hbs * (n >> 1);
 
-      count_segs_sb(cpi, tile, &mi[mi_dr * mis + mi_dc],
+      count_segs_sb(cm, xd, tile, &mi[mi_dr * mis + mi_dc],
                     no_pred_segcounts, temporal_predictor_count,
                     t_unpred_seg_counts,
                     mi_row + mi_dr, mi_col + mi_dc, subsize);
@@ -202,8 +199,7 @@
   }
 }
 
-void vp9_choose_segmap_coding_method(VP9_COMP *cpi) {
-  VP9_COMMON *const cm = &cpi->common;
+void vp9_choose_segmap_coding_method(VP9_COMMON *cm, MACROBLOCKD *xd) {
   struct segmentation *seg = &cm->seg;
 
   int no_pred_cost;
@@ -237,7 +233,7 @@
       MODE_INFO **mi = mi_ptr;
       for (mi_col = tile.mi_col_start; mi_col < tile.mi_col_end;
            mi_col += 8, mi += 8)
-        count_segs_sb(cpi, &tile, mi, no_pred_segcounts,
+        count_segs_sb(cm, xd, &tile, mi, no_pred_segcounts,
                       temporal_predictor_count, t_unpred_seg_counts,
                       mi_row, mi_col, BLOCK_64X64);
     }
diff --git a/vp9/encoder/vp9_segmentation.h b/vp9/encoder/vp9_segmentation.h
index 50dd562..8c6944a 100644
--- a/vp9/encoder/vp9_segmentation.h
+++ b/vp9/encoder/vp9_segmentation.h
@@ -42,7 +42,7 @@
 void vp9_set_segment_data(struct segmentation *seg, signed char *feature_data,
                           unsigned char abs_delta);
 
-void vp9_choose_segmap_coding_method(VP9_COMP *cpi);
+void vp9_choose_segmap_coding_method(VP9_COMMON *cm, MACROBLOCKD *xd);
 
 void vp9_reset_segment_features(struct segmentation *seg);