Remove an unused function

Change-Id: Ie3b9c92377be8de380baa994868626a27f43a8b5

av1/common/av1_loopfilter.c

diff --git a/av1/common/av1_loopfilter.c b/av1/common/av1_loopfilter.c
index bd99cb8..cecee45 100644
--- a/av1/common/av1_loopfilter.c
+++ b/av1/common/av1_loopfilter.c
@@ -1034,107 +1034,6 @@
   }
 }
 
-// TODO(chengchen): if lossless, do not need to setup mask. But when
-// segments enabled, each segment has different lossless settings.
-void av1_setup_bitmask(AV1_COMMON *const cm, int mi_row, int mi_col, int plane,
-                       int subsampling_x, int subsampling_y, int row_end,
-                       int col_end) {
-  const int num_64x64 = cm->seq_params.mib_size >> MIN_MIB_SIZE_LOG2;
-  for (int y = 0; y < num_64x64; ++y) {
-    for (int x = 0; x < num_64x64; ++x) {
-      const int row = mi_row + y * MI_SIZE_64X64;
-      const int col = mi_col + x * MI_SIZE_64X64;
-      if (row >= row_end || col >= col_end) continue;
-      if ((row << MI_SIZE_LOG2) >= cm->height ||
-          (col << MI_SIZE_LOG2) >= cm->width)
-        continue;
-
-      LoopFilterMask *lfm = get_loop_filter_mask(cm, row, col);
-      if (lfm == NULL) return;
-
-      // init mask to zero
-      if (plane == 0) {
-        av1_zero(lfm->left_y);
-        av1_zero(lfm->above_y);
-        av1_zero(lfm->lfl_y_ver);
-        av1_zero(lfm->lfl_y_hor);
-      } else if (plane == 1) {
-        av1_zero(lfm->left_u);
-        av1_zero(lfm->above_u);
-        av1_zero(lfm->lfl_u_ver);
-        av1_zero(lfm->lfl_u_hor);
-      } else {
-        av1_zero(lfm->left_v);
-        av1_zero(lfm->above_v);
-        av1_zero(lfm->lfl_v_ver);
-        av1_zero(lfm->lfl_v_hor);
-      }
-    }
-  }
-
-  // set up bitmask for each superblock
-  setup_block_mask(cm, mi_row, mi_col, cm->seq_params.sb_size, plane,
-                   subsampling_x, subsampling_y);
-
-  for (int y = 0; y < num_64x64; ++y) {
-    for (int x = 0; x < num_64x64; ++x) {
-      const int row = mi_row + y * MI_SIZE_64X64;
-      const int col = mi_col + x * MI_SIZE_64X64;
-      if (row >= row_end || col >= col_end) continue;
-      if ((row << MI_SIZE_LOG2) >= cm->height ||
-          (col << MI_SIZE_LOG2) >= cm->width)
-        continue;
-
-      LoopFilterMask *lfm = get_loop_filter_mask(cm, row, col);
-      if (lfm == NULL) return;
-
-      // check if the mask is valid
-      check_loop_filter_masks(lfm, plane);
-
-      {
-        // Let 16x16 hold 32x32 (Y/U/V) and 64x64(Y only).
-        // Even tx size is greater, we only apply max length filter, which
-        // is 16.
-        if (plane == 0) {
-          for (int j = 0; j < 4; ++j) {
-            lfm->left_y[TX_16X16].bits[j] |= lfm->left_y[TX_32X32].bits[j];
-            lfm->left_y[TX_16X16].bits[j] |= lfm->left_y[TX_64X64].bits[j];
-            lfm->above_y[TX_16X16].bits[j] |= lfm->above_y[TX_32X32].bits[j];
-            lfm->above_y[TX_16X16].bits[j] |= lfm->above_y[TX_64X64].bits[j];
-
-            // set 32x32 and 64x64 to 0
-            lfm->left_y[TX_32X32].bits[j] = 0;
-            lfm->left_y[TX_64X64].bits[j] = 0;
-            lfm->above_y[TX_32X32].bits[j] = 0;
-            lfm->above_y[TX_64X64].bits[j] = 0;
-          }
-        } else if (plane == 1) {
-          for (int j = 0; j < 4; ++j) {
-            lfm->left_u[TX_16X16].bits[j] |= lfm->left_u[TX_32X32].bits[j];
-            lfm->above_u[TX_16X16].bits[j] |= lfm->above_u[TX_32X32].bits[j];
-
-            // set 32x32 to 0
-            lfm->left_u[TX_32X32].bits[j] = 0;
-            lfm->above_u[TX_32X32].bits[j] = 0;
-          }
-        } else {
-          for (int j = 0; j < 4; ++j) {
-            lfm->left_v[TX_16X16].bits[j] |= lfm->left_v[TX_32X32].bits[j];
-            lfm->above_v[TX_16X16].bits[j] |= lfm->above_v[TX_32X32].bits[j];
-
-            // set 32x32 to 0
-            lfm->left_v[TX_32X32].bits[j] = 0;
-            lfm->above_v[TX_32X32].bits[j] = 0;
-          }
-        }
-      }
-
-      // check if the mask is valid
-      check_loop_filter_masks(lfm, plane);
-    }
-  }
-}
-
 static void filter_selectively_vert_row2(
     int subsampling_factor, uint8_t *s, int pitch, int plane,
     uint64_t mask_16x16_0, uint64_t mask_8x8_0, uint64_t mask_4x4_0,

av1/common/av1_loopfilter.h

diff --git a/av1/common/av1_loopfilter.h b/av1/common/av1_loopfilter.h
index ae4d372..ff84b2e 100644
--- a/av1/common/av1_loopfilter.h
+++ b/av1/common/av1_loopfilter.h
@@ -160,10 +160,6 @@
                          const loop_filter_info_n *lfi_n, const int dir_idx,
                          int plane, const MB_MODE_INFO *mbmi);
 #if LOOP_FILTER_BITMASK
-void av1_setup_bitmask(struct AV1Common *const cm, int mi_row, int mi_col,
-                       int plane, int subsampling_x, int subsampling_y,
-                       int row_end, int col_end);
-
 void av1_filter_block_plane_ver(struct AV1Common *const cm,
                                 struct macroblockd_plane *const plane_ptr,
                                 int pl, int mi_row, int mi_col);