Merge "Add a strict mode for auto_min_max_partition_size feature"

vp9/encoder/vp9_encodeframe.c

@@ -1446,15 +1446,19 @@ static void rd_use_partition(VP9_COMP *cpi,
 }
 
 static const BLOCK_SIZE min_partition_size[BLOCK_SIZES] = {
-  BLOCK_4X4, BLOCK_4X4, BLOCK_4X4, BLOCK_4X4,
-  BLOCK_4X4, BLOCK_4X4, BLOCK_8X8, BLOCK_8X8,
-  BLOCK_8X8, BLOCK_16X16, BLOCK_16X16, BLOCK_16X16, BLOCK_16X16
+  BLOCK_4X4,   BLOCK_4X4,   BLOCK_4X4,
+  BLOCK_4X4,   BLOCK_4X4,   BLOCK_4X4,
+  BLOCK_8X8,   BLOCK_8X8,   BLOCK_8X8,
+  BLOCK_16X16, BLOCK_16X16, BLOCK_16X16,
+  BLOCK_16X16
 };
 
 static const BLOCK_SIZE max_partition_size[BLOCK_SIZES] = {
-  BLOCK_8X8, BLOCK_16X16, BLOCK_16X16, BLOCK_16X16,
-  BLOCK_32X32, BLOCK_32X32, BLOCK_32X32, BLOCK_64X64,
-  BLOCK_64X64, BLOCK_64X64, BLOCK_64X64, BLOCK_64X64, BLOCK_64X64
+  BLOCK_8X8,   BLOCK_16X16, BLOCK_16X16,
+  BLOCK_16X16, BLOCK_32X32, BLOCK_32X32,
+  BLOCK_32X32, BLOCK_64X64, BLOCK_64X64,
+  BLOCK_64X64, BLOCK_64X64, BLOCK_64X64,
+  BLOCK_64X64
 };
 
 // Look at all the mode_info entries for blocks that are part of this
@@ -1540,9 +1544,11 @@ static void rd_auto_partition_range(VP9_COMP *cpi, const TileInfo *const tile,
     }
   }
 
-  // Give a bit of leaway either side of the observed min and max
+  // adjust observed min and max
+  if (cpi->sf.auto_min_max_partition_size == RELAXED_NEIGHBORING_MIN_MAX) {
     *min_block_size = min_partition_size[*min_block_size];
     *max_block_size = max_partition_size[*max_block_size];
+  }
 
   // Check border cases where max and min from neighbours may not be legal.
   *max_block_size = find_partition_size(*max_block_size,

vp9/encoder/vp9_onyx_if.c

@@ -839,6 +839,7 @@ static void set_rt_speed_feature(VP9_COMMON *cm,
   if (speed >= 5) {
     int i;
     sf->disable_split_mask = DISABLE_ALL_SPLIT;
+    sf->auto_min_max_partition_size = 2;
     sf->subpel_force_stop = 1;
     for (i = 0; i < TX_SIZES; i++) {
       sf->intra_y_mode_mask[i] = INTRA_DC_H_V;

vp9/encoder/vp9_onyx_int.h

@@ -180,6 +180,12 @@ typedef enum {
   USE_LARGESTALL
 } TX_SIZE_SEARCH_METHOD;
 
+typedef enum {
+  NOT_IN_USE = 0,
+  RELAXED_NEIGHBORING_MIN_MAX = 1,
+  STRICT_NEIGHBORING_MIN_MAX = 2
+} AUTO_MIN_MAX_MODE;
+
 typedef enum {
   // Values should be powers of 2 so that they can be selected as bits of
   // an integer flags field
@@ -337,9 +343,8 @@ typedef struct {
   BLOCK_SIZE always_this_block_size;
 
   // Sets min and max partition sizes for this 64x64 region based on the
-  // same superblock in last encoded frame, and the left and above neighbor
-  // in this block.
-  int auto_min_max_partition_size;
+  // same 64x64 in last encoded frame, and the left and above neighbor.
+  AUTO_MIN_MAX_MODE auto_min_max_partition_size;
 
   // Min and max partition size we enable (block_size) as per auto
   // min max, but also used by adjust partitioning, and pick_partitioning.