Originally committed as revision 23096 to svn://svn.ffmpeg.org/ffmpeg/trunk
return 3 * 12;
}
-//FIXME optimze this shit
-static inline void lsf_sf_expand(int *slen,
+#define SPLIT(dst,sf,n)\
+ if(n==3){\
+ int m= (sf*171)>>9;\
+ dst= sf - 3*m;\
+ sf=m;\
+ }else if(n==4){\
+ dst= sf&3;\
+ sf>>=2;\
+ }else if(n==5){\
+ int m= (sf*205)>>10;\
+ dst= sf - 5*m;\
+ sf=m;\
+ }else if(n==6){\
+ int m= (sf*171)>>10;\
+ dst= sf - 6*m;\
+ sf=m;\
+ }else{\
+ dst=0;\
+ }
+
+static av_always_inline void lsf_sf_expand(int *slen,
int sf, int n1, int n2, int n3)
{
- if (n3) {
- slen[3] = sf % n3;
- sf /= n3;
- } else {
- slen[3] = 0;
- }
- if (n2) {
- slen[2] = sf % n2;
- sf /= n2;
- } else {
- slen[2] = 0;
- }
- slen[1] = sf % n1;
- sf /= n1;
+ SPLIT(slen[3], sf, n3)
+ SPLIT(slen[2], sf, n2)
+ SPLIT(slen[1], sf, n1)
slen[0] = sf;
}