shithub: libvpx

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Adding read_intra_mode_{y, uv} functions for clarity.

Change-Id: I92fd32476c472e54f52b8d7602a98262b25e6eaf

--- a/vp9/decoder/vp9_decodemv.c

+++ b/vp9/decoder/vp9_decodemv.c

@@ -30,10 +30,26 @@

   return (MB_PREDICTION_MODE)treed_read(r, vp9_intra_mode_tree, p);

 }

+static MB_PREDICTION_MODE read_intra_mode_y(VP9_COMMON *cm, vp9_reader *r,

+                                            int size_group) {

+  const MB_PREDICTION_MODE y_mode = read_intra_mode(r,

+                                        cm->fc.y_mode_prob[size_group]);

+  ++cm->counts.y_mode[size_group][y_mode];

+  return y_mode;

+}

+

+static MB_PREDICTION_MODE read_intra_mode_uv(VP9_COMMON *cm, vp9_reader *r,

+                                             MB_PREDICTION_MODE y_mode) {

+  const MB_PREDICTION_MODE uv_mode = read_intra_mode(r,

+                                         cm->fc.uv_mode_prob[y_mode]);

+  ++cm->counts.uv_mode[y_mode][uv_mode];

+  return uv_mode;

+}

+

 static MB_PREDICTION_MODE read_inter_mode(VP9_COMMON *cm, vp9_reader *r,

                                           uint8_t context) {

-  MB_PREDICTION_MODE mode = treed_read(r, vp9_inter_mode_tree,

-                            cm->fc.inter_mode_probs[context]);

+  const MB_PREDICTION_MODE mode = treed_read(r, vp9_inter_mode_tree,

+                                             cm->fc.inter_mode_probs[context]);

   ++cm->counts.inter_mode[context][inter_mode_offset(mode)];

   return mode;

 }

@@ -363,9 +379,7 @@

   mbmi->ref_frame[1] = NONE;

   if (bsize >= BLOCK_8X8) {

-    const int size_group = size_group_lookup[bsize];

-    mbmi->mode = read_intra_mode(r, cm->fc.y_mode_prob[size_group]);

-    cm->counts.y_mode[size_group][mbmi->mode]++;

+    mbmi->mode = read_intra_mode_y(cm, r, size_group_lookup[bsize]);

   } else {

      // Only 4x4, 4x8, 8x4 blocks

      const int num_4x4_w = num_4x4_blocks_wide_lookup[bsize];  // 1 or 2

@@ -375,10 +389,8 @@

      for (idy = 0; idy < 2; idy += num_4x4_h) {

        for (idx = 0; idx < 2; idx += num_4x4_w) {

          const int ib = idy * 2 + idx;

-         const int b_mode = read_intra_mode(r, cm->fc.y_mode_prob[0]);

+         const int b_mode = read_intra_mode_y(cm, r, 0);

          mi->bmi[ib].as_mode = b_mode;

-         cm->counts.y_mode[0][b_mode]++;

-

          if (num_4x4_h == 2)

            mi->bmi[ib + 2].as_mode = b_mode;

          if (num_4x4_w == 2)

@@ -388,8 +400,7 @@

     mbmi->mode = mi->bmi[3].as_mode;

   }

-  mbmi->uv_mode = read_intra_mode(r, cm->fc.uv_mode_prob[mbmi->mode]);

-  cm->counts.uv_mode[mbmi->mode][mbmi->uv_mode]++;

+  mbmi->uv_mode = read_intra_mode_uv(cm, r, mbmi->mode);

 }

 static int read_is_inter_block(VP9D_COMP *pbi, int segment_id, vp9_reader *r) {