shithub: libvpx

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Turns variance based partitioning on in Speed 7

Improves coding efficiency by about 1%, increases speed by
about 15-20% over exsiting speed 7.

Change-Id: Ibf5b9b5a5c8548e863ce19047c42b579aac21d19

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

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

@@ -141,14 +141,12 @@

   unsigned int var = get_sby_perpixel_diff_variance(cpi, &cpi->mb,

                                                     mi_row, mi_col,

                                                     BLOCK_64X64);

-  if (var < 8)

+  if (var < 4)

     return BLOCK_64X64;

-  else if (var < 64)

+  else if (var < 10)

     return BLOCK_32X32;

-  else if (var < 2048)

-    return BLOCK_16X16;

   else

-    return BLOCK_8X8;

+    return BLOCK_16X16;

 }

 // Original activity measure from Tim T's code.

--- a/vp9/encoder/vp9_onyx_if.c

+++ b/vp9/encoder/vp9_onyx_if.c

@@ -855,8 +855,7 @@

     sf->partition_search_type = VAR_BASED_FIXED_PARTITION;

   }

   if (speed >= 7) {

-    sf->partition_search_type = FIXED_PARTITION;

-    sf->always_this_block_size = BLOCK_16X16;

+    sf->partition_search_type = VAR_BASED_FIXED_PARTITION;

     sf->use_nonrd_pick_mode = 1;

   }

 }