mirror of https://github.com/mpv-player/mpv
242 lines
5.9 KiB
C
242 lines
5.9 KiB
C
/*
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* benchmark tool for fast_memcpy code from libvo
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*
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* NOTE: This code can not be used on Pentium MMX / II because they contain
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* a bug in rdtsc. For Intel processors since P6(PII) rdpmc should be used
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* instead. For PIII it's disputable and it seems the bug was fixed but this
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* was not confirmed through testing.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/ioctl.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <sys/mman.h>
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#include <sys/time.h>
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#include <inttypes.h>
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#include "config.h"
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#include "cpudetect.h"
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#define BLOCK_SIZE 4096
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#define CONFUSION_FACTOR 0
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#if HAVE_MMX
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#define COMPILE_MMX
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#endif
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#if HAVE_MMX2
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#define COMPILE_MMX2
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#endif
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#if HAVE_AMD3DNOW
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#define COMPILE_AMD3DNOW
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#endif
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#if HAVE_SSE
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#define COMPILE_SSE
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#endif
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#ifdef COMPILE_MMX
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#undef RENAME
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#undef HAVE_MMX
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#undef HAVE_MMX2
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#undef HAVE_AMD3DNOW
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#undef HAVE_SSE
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#undef HAVE_SSE2
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#define HAVE_MMX 1
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#define HAVE_MMX2 0
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#define HAVE_AMD3DNOW 0
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#define HAVE_SSE 0
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#define HAVE_SSE2 0
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#define RENAME(a) a ## _MMX
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#include "libvo/aclib_template.c"
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#endif
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#ifdef COMPILE_MMX2
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#undef RENAME
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#undef HAVE_MMX
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#undef HAVE_MMX2
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#undef HAVE_AMD3DNOW
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#undef HAVE_SSE
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#undef HAVE_SSE2
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#define HAVE_MMX 1
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#define HAVE_MMX2 1
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#define HAVE_AMD3DNOW 0
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#define HAVE_SSE 0
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#define HAVE_SSE2 0
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#define RENAME(a) a ## _MMX2
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#include "libvo/aclib_template.c"
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#endif
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#ifdef COMPILE_AMD3DNOW
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#undef RENAME
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#undef HAVE_MMX
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#undef HAVE_MMX2
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#undef HAVE_AMD3DNOW
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#undef HAVE_SSE
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#undef HAVE_SSE2
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#define HAVE_MMX 1
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#define HAVE_MMX2 0
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#define HAVE_AMD3DNOW 1
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#define HAVE_SSE 0
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#define HAVE_SSE2 0
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#define RENAME(a) a ## _3DNow
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#include "libvo/aclib_template.c"
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#endif
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#ifdef COMPILE_SSE
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#undef RENAME
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#undef HAVE_MMX
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#undef HAVE_MMX2
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#undef HAVE_AMD3DNOW
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#undef HAVE_SSE
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#undef HAVE_SSE2
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#define HAVE_MMX 1
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#define HAVE_MMX2 1
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#define HAVE_AMD3DNOW 0
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#define HAVE_SSE 1
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#define HAVE_SSE2 1
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#define RENAME(a) a ## _SSE
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#include "libvo/aclib_template.c"
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#endif
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//#define ARR_SIZE 100000
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#define ARR_SIZE (1024*768*2)
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#ifdef CONFIG_MGA
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#include "drivers/mga_vid.h"
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static mga_vid_config_t mga_vid_config;
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static unsigned char* frame = NULL;
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static int f;
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static int mga_init(void)
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{
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f = open("/dev/mga_vid", O_RDWR);
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if (f == -1) {
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fprintf(stderr, "Couldn't open /dev/mga_vid.\n");
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return -1;
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}
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mga_vid_config.num_frames = 1;
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mga_vid_config.frame_size = ARR_SIZE;
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mga_vid_config.format = MGA_VID_FORMAT_YUY2;
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mga_vid_config.colkey_on = 0;
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mga_vid_config.src_width = 640;
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mga_vid_config.src_height = 480;
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mga_vid_config.dest_width = 320;
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mga_vid_config.dest_height = 200;
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mga_vid_config.x_org = 0;
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mga_vid_config.y_org = 0;
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mga_vid_config.version = MGA_VID_VERSION;
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if (ioctl(f, MGA_VID_CONFIG, &mga_vid_config)) {
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perror("Error in mga_vid_config ioctl()");
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printf("Your mga_vid driver version is incompatible with this MPlayer version!\n");
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exit(1);
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}
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ioctl(f, MGA_VID_ON, 0);
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frame = (char*)mmap(0, mga_vid_config.frame_size*mga_vid_config.num_frames,
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PROT_WRITE,MAP_SHARED, f, 0);
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if (!frame) {
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printf("Can't mmap MGA frame.\n");
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exit(1);
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}
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//clear the buffer
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//memset(frames[0], 0x80, mga_vid_config.frame_size*mga_vid_config.num_frames);
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return 0;
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}
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#endif
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// Returns current time in microseconds
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static unsigned int GetTimer(void)
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{
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struct timeval tv;
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struct timezone tz;
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//float s;
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gettimeofday(&tv, &tz);
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//s = tv.tv_usec; s *= 0.000001; s += tv.tv_sec;
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return tv.tv_sec * 1000000 + tv.tv_usec;
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}
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static inline unsigned long long int read_tsc(void)
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{
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unsigned long long int retval;
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__asm__ volatile ("rdtsc":"=A" (retval)::"memory");
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return retval;
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}
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unsigned char __attribute__((aligned(4096)))arr1[ARR_SIZE], arr2[ARR_SIZE];
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int main(void)
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{
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unsigned long long int v1, v2;
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unsigned char *marr1, *marr2;
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int i;
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unsigned int t;
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#ifdef CONFIG_MGA
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mga_init();
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marr1 = &frame[3];
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#else
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marr1 = &arr1[0];
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#endif
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marr2 = &arr2[0];
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for (i = 0; i < ARR_SIZE - 16; i++)
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marr1[i] = marr2[i] = i;
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#define testblock(func, name) \
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t = GetTimer(); \
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v1 = read_tsc(); \
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for (i = 0; i < 100; i++) \
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func(marr1, marr2, ARR_SIZE - 16); \
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v2 = read_tsc(); \
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t = GetTimer() - t; \
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/* ARR_SIZE*100 / (1024*1024) / (t/1000000) = ARR_SIZE*95.36743 / t */ \
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printf(name "CPU clocks=%llu = %dus (%5.3ffps) %5.1fMB/s\n", v2-v1, t, \
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100000000.0f / (float)t, (float)ARR_SIZE*95.36743f / (float)t);
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testblock(memcpy, "libc: ");
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#if HAVE_MMX
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testblock(fast_memcpy_MMX, "MMX: ");
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#endif
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#if HAVE_AMD3DNOW
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testblock(fast_memcpy_3DNow, "3DNow!: ");
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#endif
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#if HAVE_MMX2
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testblock(fast_memcpy_MMX2, "MMX2: ");
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#endif
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#if HAVE_SSE
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testblock(fast_memcpy_SSE, "SSE: ");
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#endif
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return 0;
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}
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