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ec9a41f57d
cd test ; make dsptest ; ./dsptest Originally committed as revision 568 to svn://svn.ffmpeg.org/ffmpeg/trunk
126 lines
3.2 KiB
C
126 lines
3.2 KiB
C
/*
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* MMX optimized DSP utils
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* Copyright (c) 2000, 2001 Gerard Lantau.
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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
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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*/
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#define TESTCPU_MAIN
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#include "dsputil.h"
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#include "../libavcodec/i386/cputest.c"
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#include "../libavcodec/i386/dsputil_mmx.c"
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#undef TESTCPU_MAIN
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#define PAD 0x10000
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/*
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* for testing speed of various routine - should be probably extended
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* for a general purpose regression test later
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*
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* currently only for i386 - FIXME
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*/
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static const struct pix_func {
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char* name;
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op_pixels_func func;
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int mm_flags;
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} pix_func[] = {
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{ "put_pixels_x2_mmx", put_pixels_y2_mmx, MM_MMX },
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{ "put_pixels_x2_3dnow", put_pixels_y2_3dnow, MM_3DNOW },
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{ "put_pixels_x2_mmx2", put_pixels_y2_mmx2, MM_MMXEXT | PAD },
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{ "put_no_rnd_pixels_x2_mmx", put_no_rnd_pixels_x2_mmx, MM_MMX },
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{ "put_no_rnd_pixels_x2_3dnow", put_no_rnd_pixels_x2_3dnow, MM_3DNOW },
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{ "put_no_rnd_pixels_x2_mmx2", put_no_rnd_pixels_x2_mmx2, MM_MMXEXT | PAD },
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{ "put_pixels_y2_mmx", put_pixels_y2_mmx, MM_MMX },
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{ "put_pixels_y2_3dnow", put_pixels_y2_3dnow, MM_3DNOW },
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{ "put_pixels_y2_mmx2", put_pixels_y2_mmx2, MM_MMXEXT | PAD },
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{ 0, 0 }
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};
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static inline long long rdtsc()
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{
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long long l;
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asm volatile( "rdtsc\n\t"
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: "=A" (l)
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);
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return l;
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}
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static test_speed(int step)
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{
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const struct pix_func* pix = pix_func;
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const int linesize = 720;
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char empty[32768];
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char* bu =(char*)(((long)empty + 32) & ~0xf);
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while (pix->name)
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{
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int i;
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uint64_t te, ts;
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op_pixels_func func = pix->func;
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char* im = bu;
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if (!(pix->mm_flags & mm_flags))
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continue;
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printf("%30s... ", pix->name);
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fflush(stdout);
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ts = rdtsc();
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for(i=0; i<100000; i++){
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func(im, im + 1000, linesize, 16);
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im += step;
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if (im > bu + 20000)
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im = bu;
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}
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te = rdtsc();
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emms();
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printf("% 9d\n", (int)(te - ts));
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if (pix->mm_flags & PAD)
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puts("");
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pix++;
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}
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}
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int main(int argc, char* argv[])
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{
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int step = 16;
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if (argc > 1)
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{
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// something simple for now
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if (argc > 2 && (strcmp("-s", argv[1]) == 0
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|| strcmp("-step", argv[1]) == 0))
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step = atoi(argv[2]);
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}
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mm_flags = mm_support();
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printf("dsptest: CPU flags:");
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if (mm_flags & MM_MMX)
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printf(" mmx");
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if (mm_flags & MM_MMXEXT)
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printf(" mmxext");
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if (mm_flags & MM_3DNOW)
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printf(" 3dnow");
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if (mm_flags & MM_SSE)
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printf(" sse");
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if (mm_flags & MM_SSE2)
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printf(" sse2");
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printf("\n");
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printf("Using step: %d\n", step);
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test_speed(step);
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}
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