mirror of
https://github.com/mpv-player/mpv
synced 2024-12-15 03:15:52 +00:00
e588ab056d
prefix to a CONFIG_ prefix. git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@27397 b3059339-0415-0410-9bf9-f77b7e298cf2
120 lines
2.8 KiB
C
120 lines
2.8 KiB
C
/*
|
|
fastmemcpybench.c used to benchmark fastmemcpy.h code from libvo.
|
|
|
|
Note: this code can not be used on PentMMX-PII because they contain
|
|
a bug in rdtsc. For Intel processors since P6(PII) rdpmc should be used
|
|
instead. For PIII it's disputable and seems bug was fixed but I don't
|
|
tested it.
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <sys/ioctl.h>
|
|
#include <unistd.h>
|
|
#include <fcntl.h>
|
|
#include <sys/mman.h>
|
|
#include <sys/time.h>
|
|
#include <inttypes.h>
|
|
|
|
//#define ARR_SIZE 100000
|
|
#define ARR_SIZE (1024*768*2)
|
|
|
|
#ifdef CONFIG_MGA
|
|
|
|
#include "drivers/mga_vid.h"
|
|
|
|
static mga_vid_config_t mga_vid_config;
|
|
static unsigned char* frame=NULL;
|
|
static int f;
|
|
|
|
static int mga_init(){
|
|
|
|
f = open("/dev/mga_vid",O_RDWR);
|
|
if(f == -1)
|
|
{
|
|
fprintf(stderr,"Couldn't open /dev/mga_vid\n");
|
|
return -1;
|
|
}
|
|
|
|
mga_vid_config.num_frames=1;
|
|
mga_vid_config.frame_size=ARR_SIZE;
|
|
mga_vid_config.format=MGA_VID_FORMAT_YUY2;
|
|
|
|
mga_vid_config.colkey_on=0;
|
|
mga_vid_config.src_width = 640;
|
|
mga_vid_config.src_height= 480;
|
|
mga_vid_config.dest_width = 320;
|
|
mga_vid_config.dest_height= 200;
|
|
mga_vid_config.x_org= 0;
|
|
mga_vid_config.y_org= 0;
|
|
|
|
mga_vid_config.version=MGA_VID_VERSION;
|
|
if (ioctl(f,MGA_VID_CONFIG,&mga_vid_config))
|
|
{
|
|
perror("Error in mga_vid_config ioctl()");
|
|
printf("Your mga_vid driver version is incompatible with this MPlayer version!\n");
|
|
exit(1);
|
|
}
|
|
ioctl(f,MGA_VID_ON,0);
|
|
|
|
frame = (char*)mmap(0,mga_vid_config.frame_size*mga_vid_config.num_frames,PROT_WRITE,MAP_SHARED,f,0);
|
|
if(!frame){
|
|
printf("Can't mmap mga frame\n");
|
|
exit(1);
|
|
}
|
|
|
|
//clear the buffer
|
|
//memset(frames[0],0x80,mga_vid_config.frame_size*mga_vid_config.num_frames);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
// Returns current time in microseconds
|
|
static unsigned int GetTimer(){
|
|
struct timeval tv;
|
|
struct timezone tz;
|
|
// float s;
|
|
gettimeofday(&tv,&tz);
|
|
// s=tv.tv_usec;s*=0.000001;s+=tv.tv_sec;
|
|
return tv.tv_sec * 1000000 + tv.tv_usec;
|
|
}
|
|
|
|
static inline unsigned long long int read_tsc( void )
|
|
{
|
|
unsigned long long int retval;
|
|
__asm __volatile ("rdtsc":"=A"(retval)::"memory");
|
|
return retval;
|
|
}
|
|
|
|
unsigned char __attribute__((aligned(4096)))arr1[ARR_SIZE],arr2[ARR_SIZE];
|
|
|
|
int main( void )
|
|
{
|
|
unsigned long long int v1,v2;
|
|
unsigned char * marr1,*marr2;
|
|
int i;
|
|
unsigned int t;
|
|
#ifdef CONFIG_MGA
|
|
mga_init();
|
|
marr1 = &frame[3];
|
|
#else
|
|
marr1 = &arr1[3];
|
|
#endif
|
|
marr2 = &arr2[9];
|
|
|
|
for(i=0; i<ARR_SIZE-16; i++) marr1[i] = marr2[i] = i;
|
|
|
|
t=GetTimer();
|
|
v1 = read_tsc();
|
|
for(i=0;i<100;i++) memcpy(marr1,marr2,ARR_SIZE-16);
|
|
v2 = read_tsc();
|
|
t=GetTimer()-t;
|
|
// ARR_SIZE*100/(1024*1024)/(t/1000000) = ARR_SIZE*95.36743/t
|
|
printf(NAME": cpu clocks=%llu = %dus (%5.3ffps) %5.1fMB/s\n",v2-v1,t,100000000.0f/(float)t,(float)ARR_SIZE*95.36743f/(float)t);
|
|
return 0;
|
|
}
|