shithub: libvpx

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Simplify the inner loop of duplicate_mode_info_in_sb.

Change-Id: I8ba9164c3550379fb998d4d074846e90fb2c6f8c

--- a/vp9/encoder/vp9_encodeframe.c

+++ b/vp9/encoder/vp9_encodeframe.c

@@ -243,14 +243,16 @@

 static void duplicate_mode_info_in_sb(VP9_COMMON *cm, MACROBLOCKD *xd,

                                       int mi_row, int mi_col,

                                       BLOCK_SIZE bsize) {

-  const int block_width = num_8x8_blocks_wide_lookup[bsize];

-  const int block_height = num_8x8_blocks_high_lookup[bsize];

+  const int block_width = VPXMIN(num_8x8_blocks_wide_lookup[bsize],

+                                 cm->mi_cols - mi_col);

+  const int block_height = VPXMIN(num_8x8_blocks_high_lookup[bsize],

+                                  cm->mi_rows - mi_row);

+  const int mi_stride = xd->mi_stride;

+  MODE_INFO *const src_mi = xd->mi[0];

   int i, j;

   for (j = 0; j < block_height; ++j)

-    for (i = 0; i < block_width; ++i) {

-      if (mi_row + j < cm->mi_rows && mi_col + i < cm->mi_cols)

-        xd->mi[j * xd->mi_stride + i] = xd->mi[0];

-    }

+    for (i = 0; i < block_width; ++i)

+      xd->mi[j * mi_stride + i] = src_mi;

 }

 static void set_block_size(VP9_COMP * const cpi,