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Converting mode_lf_lut struct member into static lookup table.

Change-Id: I6e6c7cb5ff5b60fbe6a7c314daec5ccdc2cafcc3

--- a/vp9/common/vp9_loopfilter.c

+++ b/vp9/common/vp9_loopfilter.c

@@ -221,24 +221,11 @@

 static const uint16_t left_border_uv =  0x1111;

 static const uint16_t above_border_uv = 0x000f;

+static const int mode_lf_lut[MB_MODE_COUNT] = {

+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0,  // INTRA_MODES

+  1, 1, 0, 1                     // INTER_MODES (ZEROMV == 0)

+};

-static void lf_init_lut(loop_filter_info_n *lfi) {

-  lfi->mode_lf_lut[DC_PRED] = 0;

-  lfi->mode_lf_lut[D45_PRED] = 0;

-  lfi->mode_lf_lut[D135_PRED] = 0;

-  lfi->mode_lf_lut[D117_PRED] = 0;

-  lfi->mode_lf_lut[D153_PRED] = 0;

-  lfi->mode_lf_lut[D207_PRED] = 0;

-  lfi->mode_lf_lut[D63_PRED] = 0;

-  lfi->mode_lf_lut[V_PRED] = 0;

-  lfi->mode_lf_lut[H_PRED] = 0;

-  lfi->mode_lf_lut[TM_PRED] = 0;

-  lfi->mode_lf_lut[ZEROMV]  = 0;

-  lfi->mode_lf_lut[NEARESTMV] = 1;

-  lfi->mode_lf_lut[NEARMV] = 1;

-  lfi->mode_lf_lut[NEWMV] = 1;

-}

-

 static void update_sharpness(loop_filter_info_n *lfi, int sharpness_lvl) {

   int lvl;

@@ -270,9 +257,6 @@

   update_sharpness(lfi, lf->sharpness_level);

   lf->last_sharpness_level = lf->sharpness_level;

-  // init LUT for lvl  and hev thr picking

-  lf_init_lut(lfi);

-

   // init hev threshold const vectors

   for (lvl = 0; lvl <= MAX_LOOP_FILTER; lvl++)

     vpx_memset(lfi->lfthr[lvl].hev_thr, (lvl >> 4), SIMD_WIDTH);

@@ -543,8 +527,7 @@

   const int skip = mi->mbmi.skip_coeff;

   const int seg = mi->mbmi.segment_id;

   const int ref = mi->mbmi.ref_frame[0];

-  const int mode = lfi_n->mode_lf_lut[mi->mbmi.mode];

-  const int filter_level = lfi_n->lvl[seg][ref][mode];

+  const int filter_level = lfi_n->lvl[seg][ref][mode_lf_lut[mi->mbmi.mode]];

   uint64_t *left_y = &lfm->left_y[tx_size_y];

   uint64_t *above_y = &lfm->above_y[tx_size_y];

   uint64_t *int_4x4_y = &lfm->int_4x4_y;

@@ -625,8 +608,7 @@

   const int skip = mi->mbmi.skip_coeff;

   const int seg = mi->mbmi.segment_id;

   const int ref = mi->mbmi.ref_frame[0];

-  const int mode = lfi_n->mode_lf_lut[mi->mbmi.mode];

-  const int filter_level = lfi_n->lvl[seg][ref][mode];

+  const int filter_level = lfi_n->lvl[seg][ref][mode_lf_lut[mi->mbmi.mode]];

   uint64_t *left_y = &lfm->left_y[tx_size_y];

   uint64_t *above_y = &lfm->above_y[tx_size_y];

   uint64_t *int_4x4_y = &lfm->int_4x4_y;

@@ -919,10 +901,7 @@

                      const MB_MODE_INFO *mbmi) {

   const int seg = mbmi->segment_id;

   const int ref = mbmi->ref_frame[0];

-  const int mode = lfi_n->mode_lf_lut[mbmi->mode];

-  const int filter_level = lfi_n->lvl[seg][ref][mode];

-

-  return filter_level;

+  return lfi_n->lvl[seg][ref][mode_lf_lut[mbmi->mode]];

 }

 static void filter_selectively_vert(uint8_t *s, int pitch,

--- a/vp9/common/vp9_loopfilter.h

+++ b/vp9/common/vp9_loopfilter.h

@@ -54,7 +54,6 @@

 typedef struct {

   loop_filter_thresh lfthr[MAX_LOOP_FILTER + 1];

   uint8_t lvl[MAX_SEGMENTS][MAX_REF_FRAMES][MAX_MODE_LF_DELTAS];

-  uint8_t mode_lf_lut[MB_MODE_COUNT];

 } loop_filter_info_n;

 /* assorted loopfilter functions which get used elsewhere */