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noise preserving sum of squares comparission function

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Originally committed as revision 3204 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer
2004-06-07 03:23:31 +00:00
parent 2b647ac8c9
commit e6a2ac3474
5 changed files with 64 additions and 2 deletions
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53
libavcodec/dsputil.c
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@@ -2587,6 +2587,54 @@ static int pix_abs8_xy2_c(void *v, uint8_t *pix1, uint8_t *pix2, int line_size,
return s;
}
static int nsse16_c(/*MpegEncContext*/ void *c, uint8_t *s1, uint8_t *s2, int stride, int h){
int score1=0;
int score2=0;
int x,y;
for(y=0; y<h; y++){
for(x=0; x<16; x++){
score1+= (s1[x ] - s2[x ])*(s1[x ] - s2[x ]);
}
if(y+1<h){
for(x=0; x<15; x++){
score2+= ABS( s1[x ] - s1[x +stride]
- s1[x+1] + s1[x+1+stride])
-ABS( s2[x ] - s2[x +stride]
- s2[x+1] + s2[x+1+stride]);
}
}
s1+= stride;
s2+= stride;
}
return score1 + ABS(score2)*8;
}
static int nsse8_c(/*MpegEncContext*/ void *c, uint8_t *s1, uint8_t *s2, int stride, int h){
int score1=0;
int score2=0;
int x,y;
for(y=0; y<h; y++){
for(x=0; x<8; x++){
score1+= (s1[x ] - s2[x ])*(s1[x ] - s2[x ]);
}
if(y+1<h){
for(x=0; x<7; x++){
score2+= ABS( s1[x ] - s1[x +stride]
- s1[x+1] + s1[x+1+stride])
-ABS( s2[x ] - s2[x +stride]
- s2[x+1] + s2[x+1+stride]);
}
}
s1+= stride;
s2+= stride;
}
return score1 + ABS(score2)*8;
}
static int try_8x8basis_c(int16_t rem[64], int16_t weight[64], int16_t basis[64], int scale){
int i;
unsigned int sum=0;
@@ -2680,6 +2728,9 @@ void ff_set_cmp(DSPContext* c, me_cmp_func *cmp, int type){
case FF_CMP_ZERO:
cmp[i]= zero_cmp;
break;
case FF_CMP_NSSE:
cmp[i]= c->nsse[i];
break;
default:
av_log(NULL, AV_LOG_ERROR,"internal error in cmp function selection\n");
}
@@ -3313,6 +3364,8 @@ void dsputil_init(DSPContext* c, AVCodecContext *avctx)
c->vsad[4]= vsad_intra16_c;
c->vsse[0]= vsse16_c;
c->vsse[4]= vsse_intra16_c;
c->nsse[0]= nsse16_c;
c->nsse[1]= nsse8_c;
c->add_bytes= add_bytes_c;
c->diff_bytes= diff_bytes_c;