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Improved vp8dx_decode_bool

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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
This commit is contained in:
Scott LaVarnway 2011-06-20 14:44:16 -04:00
parent a60fc419f5
commit 67a1f98c2c
1 changed files with 6 additions and 4 deletions
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10
vp8/decoder/dboolhuff.h
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@ -81,11 +81,14 @@ static int vp8dx_decode_bool(BOOL_DECODER *br, int probability) {
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 @@ static int vp8dx_decode_bool(BOOL_DECODER *br, int probability) {
br->value = value;
br->count = count;
br->range = range;
if(count < 0)
vp8dx_bool_decoder_fill(br);
return bit;
}