Segmentation code cleanup.

Cleaning up the code, removing unused vp9_check_segref_inter function and
useless comments.

Change-Id: Ia0e1a3878dc0f9789cba84aeb507a83d9dccd26b

diff --git a/vp9/common/vp9_seg_common.c b/vp9/common/vp9_seg_common.c
index 44d3172..df67cff 100644 (file)
--- a/vp9/common/vp9_seg_common.c
+++ b/vp9/common/vp9_seg_common.c
@@ -12,21 +12,18 @@
 #include "vp9/common/vp9_blockd.h"
 #include "vp9/common/vp9_seg_common.h"
 
-static const int segfeaturedata_signed[SEG_LVL_MAX] = { 1, 1, 0, 0 };
-static const int seg_feature_data_max[SEG_LVL_MAX] = { MAXQ, 63, 0xf, 0xf };
+static const int seg_feature_data_signed[SEG_LVL_MAX] = { 1, 1, 0, 0 };
+static const int seg_feature_data_max[SEG_LVL_MAX] = { MAXQ, 63, 15, 15 };
 
 // These functions provide access to new segment level features.
 // Eventually these function may be "optimized out" but for the moment,
 // the coding mechanism is still subject to change so these provide a
 // convenient single point of change.
 
-int vp9_segfeature_active(const MACROBLOCKD *xd,
-                          int segment_id,
+int vp9_segfeature_active(const MACROBLOCKD *xd, int segment_id,
                           SEG_LVL_FEATURES feature_id) {
-  // Return true if mask bit set and segmentation enabled.
-  return (xd->segmentation_enabled &&
-          (xd->segment_feature_mask[segment_id] &
-           (0x01 << feature_id)));
+  return xd->segmentation_enabled &&
+         (xd->segment_feature_mask[segment_id] & (1 << feature_id));
 }
 
 void vp9_clearall_segfeatures(MACROBLOCKD *xd) {
@@ -34,14 +31,12 @@ void vp9_clearall_segfeatures(MACROBLOCKD *xd) {
   vpx_memset(xd->segment_feature_mask, 0, sizeof(xd->segment_feature_mask));
 }
 
-void vp9_enable_segfeature(MACROBLOCKD *xd,
-                           int segment_id,
+void vp9_enable_segfeature(MACROBLOCKD *xd, int segment_id,
                            SEG_LVL_FEATURES feature_id) {
-  xd->segment_feature_mask[segment_id] |= (0x01 << feature_id);
+  xd->segment_feature_mask[segment_id] |= 1 << feature_id;
 }
 
-void vp9_disable_segfeature(MACROBLOCKD *xd,
-                            int segment_id,
+void vp9_disable_segfeature(MACROBLOCKD *xd, int segment_id,
                             SEG_LVL_FEATURES feature_id) {
   xd->segment_feature_mask[segment_id] &= ~(1 << feature_id);
 }
@@ -51,30 +46,26 @@ int vp9_seg_feature_data_max(SEG_LVL_FEATURES feature_id) {
 }
 
 int vp9_is_segfeature_signed(SEG_LVL_FEATURES feature_id) {
-  return segfeaturedata_signed[feature_id];
+  return seg_feature_data_signed[feature_id];
 }
 
-void vp9_clear_segdata(MACROBLOCKD *xd,
-                       int segment_id,
+void vp9_clear_segdata(MACROBLOCKD *xd, int segment_id,
                        SEG_LVL_FEATURES feature_id) {
   xd->segment_feature_data[segment_id][feature_id] = 0;
 }
 
-void vp9_set_segdata(MACROBLOCKD *xd,
-                     int segment_id,
-                     SEG_LVL_FEATURES feature_id,
-                     int seg_data) {
+void vp9_set_segdata(MACROBLOCKD *xd, int segment_id,
+                     SEG_LVL_FEATURES feature_id, int seg_data) {
   assert(seg_data <= seg_feature_data_max[feature_id]);
   if (seg_data < 0) {
-    assert(segfeaturedata_signed[feature_id]);
+    assert(seg_feature_data_signed[feature_id]);
     assert(-seg_data <= seg_feature_data_max[feature_id]);
   }
 
   xd->segment_feature_data[segment_id][feature_id] = seg_data;
 }
 
-int vp9_get_segdata(const MACROBLOCKD *xd,
-                    int segment_id,
+int vp9_get_segdata(const MACROBLOCKD *xd, int segment_id,
                     SEG_LVL_FEATURES feature_id) {
   return xd->segment_feature_data[segment_id][feature_id];
 }
@@ -83,23 +74,15 @@ void vp9_clear_segref(MACROBLOCKD *xd, int segment_id) {
   xd->segment_feature_data[segment_id][SEG_LVL_REF_FRAME] = 0;
 }
 
-void vp9_set_segref(MACROBLOCKD *xd,
-                    int segment_id,
+void vp9_set_segref(MACROBLOCKD *xd, int segment_id,
                     MV_REFERENCE_FRAME ref_frame) {
-  xd->segment_feature_data[segment_id][SEG_LVL_REF_FRAME] |=
-    (1 << ref_frame);
+  xd->segment_feature_data[segment_id][SEG_LVL_REF_FRAME] |= 1 << ref_frame;
 }
 
-int vp9_check_segref(const MACROBLOCKD *xd,
-                     int segment_id,
+int vp9_check_segref(const MACROBLOCKD *xd, int segment_id,
                      MV_REFERENCE_FRAME ref_frame) {
   return (xd->segment_feature_data[segment_id][SEG_LVL_REF_FRAME] &
-          (1 << ref_frame)) ? 1 : 0;
-}
-
-int vp9_check_segref_inter(MACROBLOCKD *xd, int segment_id) {
-  return (xd->segment_feature_data[segment_id][SEG_LVL_REF_FRAME] &
-          ~(1 << INTRA_FRAME)) ? 1 : 0;
+         (1 << ref_frame)) ? 1 : 0;
 }
 
 // TBD? Functions to read and write segment data with range / validity checking

diff --git a/vp9/common/vp9_seg_common.h b/vp9/common/vp9_seg_common.h
index 2d0018b..243ff88 100644 (file)
--- a/vp9/common/vp9_seg_common.h
+++ b/vp9/common/vp9_seg_common.h
@@ -55,7 +55,5 @@ int vp9_check_segref(const MACROBLOCKD *xd,
                      int segment_id,
                      MV_REFERENCE_FRAME ref_frame);
 
-int vp9_check_segref_inter(MACROBLOCKD *xd, int segment_id);
-
 #endif  // VP9_COMMON_VP9_SEG_COMMON_H_
 

diff --git a/vp9/decoder/vp9_decodframe.c b/vp9/decoder/vp9_decodframe.c
index 7d71ceb..72e4db3 100644 (file)
--- a/vp9/decoder/vp9_decodframe.c
+++ b/vp9/decoder/vp9_decodframe.c
@@ -1266,8 +1266,8 @@ static void update_frame_size(VP9D_COMP *pbi) {
   const int width = multiple16(cm->width);
   const int height = multiple16(cm->height);
 
-  cm->mb_rows = height >> 4;
-  cm->mb_cols = width >> 4;
+  cm->mb_rows = height / 16;
+  cm->mb_cols = width / 16;
   cm->MBs = cm->mb_rows * cm->mb_cols;
   cm->mode_info_stride = cm->mb_cols + 1;
   memset(cm->mip, 0,
@@ -1288,7 +1288,6 @@ static void setup_segmentation(VP9_COMMON *pc, MACROBLOCKD *xd, vp9_reader *r) {
     // this frame.
     xd->update_mb_segmentation_map = vp9_read_bit(r);
 
-    // If so what method will be used.
     if (xd->update_mb_segmentation_map) {
       // Which macro block level features are enabled. Read the probs used to
       // decode the segment id for each macro block.
@@ -1297,15 +1296,10 @@ static void setup_segmentation(VP9_COMMON *pc, MACROBLOCKD *xd, vp9_reader *r) {
 
       // Read the prediction probs needed to decode the segment id
       pc->temporal_update = vp9_read_bit(r);
-      for (i = 0; i < PREDICTION_PROBS; i++) {
-        pc->segment_pred_probs[i] = pc->temporal_update
-            ? (vp9_read_bit(r) ? vp9_read_prob(r) : 255)
-            : 255;
-      }
-
       if (pc->temporal_update) {
         const vp9_prob *p = xd->mb_segment_tree_probs;
         vp9_prob *p_mod = xd->mb_segment_mispred_tree_probs;
+
         const int c0 =        p[0]  *        p[1];
         const int c1 =        p[0]  * (256 - p[1]);
         const int c2 = (256 - p[0]) *        p[2];
@@ -1315,6 +1309,12 @@ static void setup_segmentation(VP9_COMMON *pc, MACROBLOCKD *xd, vp9_reader *r) {
         p_mod[1] = get_binary_prob(c0, c2 + c3);
         p_mod[2] = get_binary_prob(c0 + c1, c3);
         p_mod[3] = get_binary_prob(c0 + c1, c2);
+
+        for (i = 0; i < PREDICTION_PROBS; i++)
+          pc->segment_pred_probs[i] = vp9_read_bit(r) ? vp9_read_prob(r) : 255;
+      } else {
+        for (i = 0; i < PREDICTION_PROBS; i++)
+          pc->segment_pred_probs[i] = 255;
       }
     }
 
@@ -1324,25 +1324,17 @@ static void setup_segmentation(VP9_COMMON *pc, MACROBLOCKD *xd, vp9_reader *r) {
 
       vp9_clearall_segfeatures(xd);
 
-      // For each segmentation...
       for (i = 0; i < MAX_MB_SEGMENTS; i++) {
-        // For each of the segments features...
         for (j = 0; j < SEG_LVL_MAX; j++) {
-          int data;
-          // Is the feature enabled
-          if (vp9_read_bit(r)) {
-            // Update the feature data and mask
+          int data = 0;
+          const int feature_enabled = vp9_read_bit(r);
+          if (feature_enabled) {
             vp9_enable_segfeature(xd, i, j);
-
             data = vp9_decode_unsigned_max(r, vp9_seg_feature_data_max(j));
-            // Is the segment data signed.
             if (vp9_is_segfeature_signed(j) && vp9_read_bit(r)) {
               data = -data;
             }
-          } else {
-            data = 0;
           }
-
           vp9_set_segdata(xd, i, j, data);
         }
       }