shithub: libvpx

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Improved vp8dx_decode_bool

Relocated the vp8dx_bool_decoder_fill() call, allowing
the compiler to produce better assembly code.  Tests
showed a 1 - 2 % performance boost (x86 using gcc)
for the 720p clip used.

Change-Id: Ic5a4eefed8777e6eefa007d4f12dfc7e64482732

--- a/vp8/decoder/dboolhuff.h

+++ b/vp8/decoder/dboolhuff.h

@@ -81,11 +81,14 @@

     int count;

     unsigned int range;

+    split = 1 + (((br->range - 1) * probability) >> 8);

+

+    if(br->count < 0)

+        vp8dx_bool_decoder_fill(br);

+

     value = br->value;

     count = br->count;

-    range = br->range;

-    split = 1 + (((range - 1) * probability) >> 8);

     bigsplit = (VP8_BD_VALUE)split << (VP8_BD_VALUE_SIZE - 8);

     range = split;

@@ -106,8 +109,7 @@

     br->value = value;

     br->count = count;

     br->range = range;

-    if(count < 0)

-        vp8dx_bool_decoder_fill(br);

+

     return bit;

 }

-- 

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