shithub: libvpx

Download patch

ref: 4305dd4778f7ed3f0859982e2c81d87a98a8f448
parent: dd9dc0e9d65a985ba889e4e87926f23122eb7fa2
author: Paul Wilkins <paulwilkins@google.com>
date: Thu May 9 09:51:15 EDT 2013 

Avoid calls to get_coef_band().

Use value already computed value to save of calls

Change-Id: I42836698e59c116416ccd75395bebdd11dd609fb


--- a/vp9/decoder/vp9_detokenize.c
+++ b/vp9/decoder/vp9_detokenize.c
@@ -62,7 +62,7 @@
 
 #define INCREMENT_COUNT(token)               \
   do {                                       \
-    coef_counts[type][ref][get_coef_band(scan, txfm_size, c)] \
+    coef_counts[type][ref][band] \
                [pt][token]++;     \
     token_cache[scan[c]] = token; \
   } while (0)
@@ -96,6 +96,7 @@
   ENTROPY_CONTEXT above_ec, left_ec;
   FRAME_CONTEXT *const fc = &dx->common.fc;
   int pt, c = 0, pad, default_eob;
+  int band;
   vp9_coeff_probs *coef_probs;
   vp9_prob *prob;
   vp9_coeff_count *coef_counts;
@@ -162,7 +163,6 @@
 
   while (1) {
     int val;
-    int band;
     const uint8_t *cat6 = cat6_prob;
     if (c >= seg_eob)
       break;
@@ -249,8 +249,7 @@
   }
 
   if (c < seg_eob)
-    coef_counts[type][ref][get_coef_band(scan, txfm_size, c)]
-        [pt][DCT_EOB_TOKEN]++;
+    coef_counts[type][ref][band][pt][DCT_EOB_TOKEN]++;
 
   for (pt = 0; pt < (1 << txfm_size); pt++) {
     A[pt] = L[pt] = c > 0;