RepoMirrors
/
ffmpeg
mirror of https://git.ffmpeg.org/ffmpeg.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity

* added simple test main - see comments about how to 

compile - should be probably made as a regression test

Originally committed as revision 565 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Zdenek Kabelac 2002-05-23 10:09:33 +00:00
parent ba0420d83e
commit dcb9cd4b81
1 changed files with 46 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

42
libavcodec/i386/dsputil_mmx.c
View File

@ -928,6 +928,7 @@ static void clear_blocks_mmx(DCTELEM *blocks)
static void just_return() { return; }
#endif
#ifndef TESTCPU_MAIN
void dsputil_init_mmx(void)
{
mm_flags = mm_support();
@ -1080,3 +1081,44 @@ void dsputil_set_bit_exact_mmx(void)
}
}
}
#else // TESTCPU_MAIN
/*
* for testing speed of various routine - should be probably extended
* for a general purpose regression test later
*
* for now use it this way:
*
* gcc -O4 -fomit-frame-pointer -DHAVE_AV_CONFIG_H -DTESTCPU_MAIN -I../.. -o test dsputil_mmx.c
*
* in libavcodec/i386 directory - then run ./test
*/
static inline long long rdtsc()
{
long long l;
asm volatile( "rdtsc\n\t"
: "=A" (l)
);
return l;
}
int main(int argc, char* argv[])
{
volatile int v;
int i;
const int linesize = 720;
char bu[32768];
uint64_t te, ts = rdtsc();
char* im = bu;
op_pixels_func fc = put_pixels_y2_mmx2;
for(i=0; i<1000000; i++){
fc(im, im + 1000, linesize, 16);
im += 16; //
if (im > bu + 10000)
im = bu;
}
te = rdtsc();
printf("CPU Ticks: %7d\n", (int)(te - ts));
fflush(stdout);
}
#endif