cosmetics: vp9_reconinter.h: make some variables const

Change-Id: If5cd0a1487e97c8e9d13dc2e078c6dceaf79de4f

vp9/common/vp9_reconinter.h

@@ -58,34 +58,34 @@ static void setup_pred_plane(struct buf_2d *dst,
 static void setup_dst_planes(MACROBLOCKD *xd,
                              const YV12_BUFFER_CONFIG *src,
                              int mi_row, int mi_col) {
-  uint8_t *buffers[4] = {src->y_buffer, src->u_buffer, src->v_buffer,
-                         src->alpha_buffer};
-  int strides[4] = {src->y_stride, src->uv_stride, src->uv_stride,
-                    src->alpha_stride};
+  uint8_t *const buffers[4] = {src->y_buffer, src->u_buffer, src->v_buffer,
+                               src->alpha_buffer};
+  const int strides[4] = {src->y_stride, src->uv_stride, src->uv_stride,
+                          src->alpha_stride};
   int i;
 
   for (i = 0; i < MAX_MB_PLANE; ++i) {
-    struct macroblockd_plane *pd = &xd->plane[i];
+    struct macroblockd_plane *const pd = &xd->plane[i];
     setup_pred_plane(&pd->dst, buffers[i], strides[i], mi_row, mi_col, NULL,
                      pd->subsampling_x, pd->subsampling_y);
   }
 }
 
-static void setup_pre_planes(MACROBLOCKD *xd, int i,
+static void setup_pre_planes(MACROBLOCKD *xd, int idx,
                              const YV12_BUFFER_CONFIG *src,
                              int mi_row, int mi_col,
                              const struct scale_factors *sf) {
-  if (src) {
-    int j;
-    uint8_t* buffers[4] = {src->y_buffer, src->u_buffer, src->v_buffer,
-                           src->alpha_buffer};
-    int strides[4] = {src->y_stride, src->uv_stride, src->uv_stride,
-                      src->alpha_stride};
-
-    for (j = 0; j < MAX_MB_PLANE; ++j) {
-      struct macroblockd_plane *pd = &xd->plane[j];
-      setup_pred_plane(&pd->pre[i], buffers[j], strides[j],
-                     mi_row, mi_col, sf, pd->subsampling_x, pd->subsampling_y);
+  if (src != NULL) {
+    int i;
+    uint8_t *const buffers[4] = {src->y_buffer, src->u_buffer, src->v_buffer,
+                                 src->alpha_buffer};
+    const int strides[4] = {src->y_stride, src->uv_stride, src->uv_stride,
+                            src->alpha_stride};
+
+    for (i = 0; i < MAX_MB_PLANE; ++i) {
+      struct macroblockd_plane *const pd = &xd->plane[i];
+      setup_pred_plane(&pd->pre[idx], buffers[i], strides[i], mi_row, mi_col,
+                       sf, pd->subsampling_x, pd->subsampling_y);
     }
   }
 }