diff options
| -rw-r--r-- | drivers/theora/decode.c | 46 |
1 files changed, 30 insertions, 16 deletions
diff --git a/drivers/theora/decode.c b/drivers/theora/decode.c index 7be66463d8..882606ae77 100644 --- a/drivers/theora/decode.c +++ b/drivers/theora/decode.c @@ -1611,28 +1611,35 @@ static void oc_filter_hedge(unsigned char *_dst,int _dst_ystride, int sum1; int bx; int by; + int _rlimit1; + int _rlimit2; rdst=_dst; rsrc=_src; - for(bx=0;bx<8;bx++){ + for(bx=0;bx<8;++bx){ cdst=rdst; csrc=rsrc; - for(by=0;by<10;by++){ + _rlimit1 = _rlimit2 = _flimit; + for(by=0;by<10;++by){ r[by]=*csrc; csrc+=_src_ystride; } sum0=sum1=0; - for(by=0;by<4;by++){ - sum0+=abs(r[by+1]-r[by]); - sum1+=abs(r[by+5]-r[by+6]); + for(by=0;by<4;++by){ + int sumed = abs(r[by+1]-r[by]); + sum0+=sumed; + _rlimit1-=sumed; + sumed = abs(r[by+5]-r[by+6]); + sum1+=sumed; + _rlimit2-=sumed; } *_variance0+=OC_MINI(255,sum0); *_variance1+=OC_MINI(255,sum1); - if(sum0<_flimit&&sum1<_flimit&&r[5]-r[4]<_qstep&&r[4]-r[5]<_qstep){ + if(_rlimit1&&_rlimit2&&!(r[5]-r[4]-_qstep)&&!(r[4]-r[5]-_qstep)){ *cdst=(unsigned char)(r[0]*3+r[1]*2+r[2]+r[3]+r[4]+4>>3); cdst+=_dst_ystride; *cdst=(unsigned char)(r[0]*2+r[1]+r[2]*2+r[3]+r[4]+r[5]+4>>3); cdst+=_dst_ystride; - for(by=0;by<4;by++){ + for(by=0;by<4;++by){ *cdst=(unsigned char)(r[by]+r[by+1]+r[by+2]+r[by+3]*2+ r[by+4]+r[by+5]+r[by+6]+4>>3); cdst+=_dst_ystride; @@ -1642,13 +1649,13 @@ static void oc_filter_hedge(unsigned char *_dst,int _dst_ystride, *cdst=(unsigned char)(r[5]+r[6]+r[7]+r[8]*2+r[9]*3+4>>3); } else{ - for(by=1;by<=8;by++){ + for(by=1;by<=8;++by){ *cdst=(unsigned char)r[by]; cdst+=_dst_ystride; } } - rdst++; - rsrc++; + ++rdst; + ++rsrc; } } @@ -1663,19 +1670,26 @@ static void oc_filter_vedge(unsigned char *_dst,int _dst_ystride, int sum1; int bx; int by; + int _rlimit1; + int _rlimit2; cdst=_dst; - for(by=0;by<8;by++){ + for(by=0;by<8;++by){ rsrc=cdst-1; rdst=cdst; - for(bx=0;bx<10;bx++)r[bx]=*rsrc++; + for(bx=0;bx<10;++bx)r[bx]=*rsrc++; sum0=sum1=0; - for(bx=0;bx<4;bx++){ - sum0+=abs(r[bx+1]-r[bx]); - sum1+=abs(r[bx+5]-r[bx+6]); + _rlimit1 = _rlimit2 = _flimit; + for(bx=0;bx<4;++bx){ + int sumed = abs(r[bx+1]-r[bx]); + sum0+=sumed; + _rlimit1-=sumed; + sumed = abs(r[bx+5]-r[bx+6]); + sum1+=sumed; + _rlimit2-=sumed; } _variances[0]+=OC_MINI(255,sum0); _variances[1]+=OC_MINI(255,sum1); - if(sum0<_flimit&&sum1<_flimit&&r[5]-r[4]<_qstep&&r[4]-r[5]<_qstep){ + if(_rlimit1&&_rlimit2&&!(r[5]-r[4]-_qstep)&&!(r[4]-r[5]-_qstep)){ *rdst++=(unsigned char)(r[0]*3+r[1]*2+r[2]+r[3]+r[4]+4>>3); *rdst++=(unsigned char)(r[0]*2+r[1]+r[2]*2+r[3]+r[4]+r[5]+4>>3); for(bx=0;bx<4;bx++){ |