shithub: libvpx

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decoder speedup - get-segment-id only if segmentation enabled

Change-Id: I9355f8446660aeb7dfdbc5ee56635c791ac35e95

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

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

@@ -367,13 +367,14 @@

   VP9_COMMON *const cm = &pbi->common;

   MACROBLOCKD *const xd = &pbi->mb;

   const BLOCK_SIZE_TYPE bsize = xd->mode_info_context->mbmi.sb_type;

-  const int pred_segment_id = vp9_get_segment_id(cm, cm->last_frame_seg_map,

-                                                 bsize, mi_row, mi_col);

+  int pred_segment_id;

   int segment_id;

   if (!xd->segmentation_enabled)

     return 0;  // Default for disabled segmentation

+  pred_segment_id = vp9_get_segment_id(cm, cm->last_frame_seg_map,

+                                                   bsize, mi_row, mi_col);

   if (!xd->update_mb_segmentation_map)

     return pred_segment_id;