libvpx: Pull from upstream

source/libvpx/vp9/common/vp9_loopfilter.c

 /*
  *  Copyright (c) 2010 The WebM project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 601 matching lines @@
               left_64x64_txform_mask[tx_size_y]) << shift_y;
 
   if (tx_size_y == TX_4X4)
     *int_4x4_y |= (size_mask[block_size] & 0xffffffffffffffff) << shift_y;
 }
 
 // This function sets up the bit masks for the entire 64x64 region represented
 // by mi_row, mi_col.
 // TODO(JBB): This function only works for yv12.
 void vp9_setup_mask(VP9_COMMON *const cm, const int mi_row, const int mi_col,
-                    MODE_INFO **mi_8x8, const int mode_info_stride,
+                    MODE_INFO **mi, const int mode_info_stride,
                     LOOP_FILTER_MASK *lfm) {
   int idx_32, idx_16, idx_8;
   const loop_filter_info_n *const lfi_n = &cm->lf_info;
-  MODE_INFO **mip = mi_8x8;
-  MODE_INFO **mip2 = mi_8x8;
+  MODE_INFO **mip = mi;
+  MODE_INFO **mip2 = mi;
 
   // These are offsets to the next mi in the 64x64 block. It is what gets
   // added to the mi ptr as we go through each loop.  It helps us to avoids
   // setting up special row and column counters for each index.  The last step
   // brings us out back to the starting position.
   const int offset_32[] = {4, (mode_info_stride << 2) - 4, 4,
                            -(mode_info_stride << 2) - 4};
   const int offset_16[] = {2, (mode_info_stride << 1) - 2, 2,
                            -(mode_info_stride << 1) - 2};
   const int offset[] = {1, mode_info_stride - 1, 1, -mode_info_stride - 1};
@@ skipping 550 matching lines @@
       mask_4x4 >>= 4;
       mask_4x4_int >>= 4;
     }
   }
 }
 
 void vp9_loop_filter_rows(const YV12_BUFFER_CONFIG *frame_buffer,
                           VP9_COMMON *cm, MACROBLOCKD *xd,
                           int start, int stop, int y_only) {
   const int num_planes = y_only ? 1 : MAX_MB_PLANE;
+  const int use_420 = y_only || (xd->plane[1].subsampling_y == 1 &&
+                                 xd->plane[1].subsampling_x == 1);
+  LOOP_FILTER_MASK lfm;
   int mi_row, mi_col;
-  LOOP_FILTER_MASK lfm;
-  int use_420 = y_only || (xd->plane[1].subsampling_y == 1 &&
-      xd->plane[1].subsampling_x == 1);
 
   for (mi_row = start; mi_row < stop; mi_row += MI_BLOCK_SIZE) {
-    MODE_INFO **mi_8x8 = cm->mi_grid_visible + mi_row * cm->mi_stride;
+    MODE_INFO **mi = cm->mi_grid_visible + mi_row * cm->mi_stride;
 
     for (mi_col = 0; mi_col < cm->mi_cols; mi_col += MI_BLOCK_SIZE) {
       int plane;
 
       vp9_setup_dst_planes(xd, frame_buffer, mi_row, mi_col);
 
       // TODO(JBB): Make setup_mask work for non 420.
       if (use_420)
-        vp9_setup_mask(cm, mi_row, mi_col, mi_8x8 + mi_col, cm->mi_stride,
+        vp9_setup_mask(cm, mi_row, mi_col, mi + mi_col, cm->mi_stride,
                        &lfm);
 
       for (plane = 0; plane < num_planes; ++plane) {
         if (use_420)
           vp9_filter_block_plane(cm, &xd->plane[plane], mi_row, &lfm);
         else
-          filter_block_plane_non420(cm, &xd->plane[plane], mi_8x8 + mi_col,
+          filter_block_plane_non420(cm, &xd->plane[plane], mi + mi_col,
                                     mi_row, mi_col);
       }
     }
   }
 }
 
-void vp9_loop_filter_frame(VP9_COMMON *cm, MACROBLOCKD *xd,
+void vp9_loop_filter_frame(YV12_BUFFER_CONFIG *frame,
+                           VP9_COMMON *cm, MACROBLOCKD *xd,
                            int frame_filter_level,
                            int y_only, int partial_frame) {
   int start_mi_row, end_mi_row, mi_rows_to_filter;
   if (!frame_filter_level) return;
   start_mi_row = 0;
   mi_rows_to_filter = cm->mi_rows;
   if (partial_frame && cm->mi_rows > 8) {
     start_mi_row = cm->mi_rows >> 1;
     start_mi_row &= 0xfffffff8;
     mi_rows_to_filter = MAX(cm->mi_rows / 8, 8);
   }
   end_mi_row = start_mi_row + mi_rows_to_filter;
   vp9_loop_filter_frame_init(cm, frame_filter_level);
-  vp9_loop_filter_rows(cm->frame_to_show, cm, xd,
+  vp9_loop_filter_rows(frame, cm, xd,
                        start_mi_row, end_mi_row,
                        y_only);
 }
 
 int vp9_loop_filter_worker(void *arg1, void *arg2) {
   LFWorkerData *const lf_data = (LFWorkerData*)arg1;
   (void)arg2;
   vp9_loop_filter_rows(lf_data->frame_buffer, lf_data->cm, &lf_data->xd,
                        lf_data->start, lf_data->stop, lf_data->y_only);
   return 1;
 }