[FFmpeg-soc] [soc]: r3859 - dirac/libavcodec/dirac.h

[conrad]

Author: conrad
Date: Thu Dec  4 22:10:25 2008
New Revision: 3859

Log:
Use shifts rather than division


Modified:
   dirac/libavcodec/dirac.h

Modified: dirac/libavcodec/dirac.h
==============================================================================
--- dirac/libavcodec/dirac.h	(original)
+++ dirac/libavcodec/dirac.h	Thu Dec  4 22:10:25 2008
@@ -271,7 +271,7 @@ static int inline subband_height(DiracCo
 // which schoedinger and dirac-research also assume
 static unsigned int inline coeff_quant_factor(unsigned int quant)
 {
-    uint64_t base = 1 << (quant / 4);
+    uint64_t base = 1 << (quant >> 2);
     switch(quant & 3) {
     case 0:
         return base << 2;
@@ -298,7 +298,7 @@ static unsigned int inline coeff_quant_o
             return (coeff_quant_factor(quant) + 1) >> 1;
     }
 
-    return (coeff_quant_factor(quant) * 3 + 4) / 8;
+    return (coeff_quant_factor(quant) * 3 + 4) >> 3;
 }
 
 /**