Nixyri/godot
1
0
Fork 0
mirror of https://github.com/godotengine/godot.git synced 2024-11-10 22:23:07 +00:00
Code Issues Actions 1 Packages Projects Releases Wiki Activity

Optimised the oc_filter_hedge and oc_filter_vedge routines in theora a little.

Browse Source
This commit is contained in:
Aren Villanueva 2015-11-02 16:35:32 +11:00
parent c1fdc3b5d1
commit 00d79a6d6c
1 changed files with 30 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

46
drivers/theora/decode.c
View File

@ -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++){