shithub: libvpx

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mi_width_log2 & mi_height_log2

converted to lookup to avoid unnecessary code

Change-Id: I2ee6a01f06984cc2c4ba74b3fffd215318f749d2

--- a/vp9/common/vp9_blockd.h

+++ b/vp9/common/vp9_blockd.h

@@ -149,20 +149,11 @@

 }

 static INLINE int mi_width_log2(BLOCK_SIZE_TYPE sb_type) {

-  int a = b_width_log2(sb_type) - 1;

-  // align 4x4 block to mode_info

-  if (a < 0)

-    a = 0;

-  assert(a >= 0);

-  return a;

+  return mi_width_log2_lookup[sb_type];

 }

 static INLINE int mi_height_log2(BLOCK_SIZE_TYPE sb_type) {

-  int a = b_height_log2(sb_type) - 1;

-  if (a < 0)

-    a = 0;

-  assert(a >= 0);

-  return a;

+  return mi_height_log2_lookup[sb_type];

 }

 typedef struct {

--- a/vp9/common/vp9_common_data.c

+++ b/vp9/common/vp9_common_data.c

@@ -15,3 +15,8 @@

   {0, 0, 1, 1, 1, 2, 2, 2, 3, 3, 3, 4, 4};

 const int b_height_log2_lookup[BLOCK_SIZE_TYPES] =

   {0, 1, 0, 1, 2, 1, 2, 3, 2, 3, 4, 3, 4};

+// Log 2 conversion lookup tables for modeinfo width and height

+const int mi_width_log2_lookup[BLOCK_SIZE_TYPES] =

+  {0, 0, 0, 0, 0, 1, 1, 1, 2, 2, 2, 3, 3};

+const int mi_height_log2_lookup[BLOCK_SIZE_TYPES] =

+  {0, 0, 0, 0, 1, 0, 1, 2, 1, 2, 3, 2, 3};

--- a/vp9/common/vp9_common_data.h

+++ b/vp9/common/vp9_common_data.h

@@ -15,5 +15,7 @@

 extern const int b_width_log2_lookup[BLOCK_SIZE_TYPES];

 extern const int b_height_log2_lookup[BLOCK_SIZE_TYPES];

+extern const int mi_width_log2_lookup[BLOCK_SIZE_TYPES];

+extern const int mi_height_log2_lookup[BLOCK_SIZE_TYPES];

 #endif    // VP9_COMMON_VP9_COMMON_DATA_H

-- 

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