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tiny_psnr: print max absolute difference between files

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Regression test reference updates are due to the extra output
from tiny_psnr.

Patch by Vitor Sessak

Originally committed as revision 24132 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Vitor Sessak
2010-07-09 00:40:37 +00:00
committed by Måns Rullgård
parent 9eb42c272b
commit cb0067ec25
91 changed files with 136 additions and 131 deletions
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7
tests/tiny_psnr.c
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@ -113,6 +113,7 @@ int main(int argc,char* argv[]){
int skip_bytes = argc<6 ? 0 : atoi(argv[5]);
int size0=0;
int size1=0;
int maxdist = 0;
if(argc<3){
printf("tiny_psnr <file1> <file2> [<elem size> [<shift> [<skip bytes>]]]\n");
@ -139,11 +140,14 @@ int main(int argc,char* argv[]){
for(j=0; j<FFMIN(s0,s1); j++){
int64_t a= buf[0][j];
int64_t b= buf[1][j];
int dist;
if(len==2){
a= (int16_t)(a | (buf[0][++j]<<8));
b= (int16_t)(b | (buf[1][ j]<<8));
}
sse += (a-b) * (a-b);
dist = abs(a-b);
if (dist > maxdist) maxdist = dist;
}
size0 += s0;
size1 += s1;
@ -159,9 +163,10 @@ int main(int argc,char* argv[]){
else
psnr= 1000*F-1; //floating point free infinity :)
printf("stddev:%5d.%02d PSNR:%3d.%02d bytes:%9d/%9d\n",
printf("stddev:%5d.%02d PSNR:%3d.%02d MAXDIFF:%5d bytes:%9d/%9d\n",
(int)(dev/F), (int)(dev%F),
(int)(psnr/F), (int)(psnr%F),
maxdist,
size0, size1);
return 0;
}