mirror of https://github.com/mpv-player/mpv
227 lines
5.1 KiB
C
227 lines
5.1 KiB
C
/*
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* aclib - advanced C library ;)
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* Functions which improve and expand the standard C library, see aclib_template.c.
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* This file only contains runtime CPU detection and config option stuff.
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* runtime CPU detection by Michael Niedermayer (michaelni@gmx.at)
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*
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* This file is part of MPlayer.
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*
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* MPlayer 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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* MPlayer 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 MPlayer; 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 "config.h"
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#include <stddef.h>
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#include <stdint.h>
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#include <string.h>
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#include "cpudetect.h"
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#include "fastmemcpy.h"
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#include "libavutil/x86_cpu.h"
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#undef memcpy
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#define BLOCK_SIZE 4096
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#define CONFUSION_FACTOR 0
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//Feel free to fine-tune the above 2, it might be possible to get some speedup with them :)
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//#define STATISTICS
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//Note: we have MMX, MMX2, 3DNOW version there is no 3DNOW+MMX2 one
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//Plain C versions
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//#if !HAVE_MMX || CONFIG_RUNTIME_CPUDETECT
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//#define COMPILE_C
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//#endif
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#if ARCH_X86
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#if (HAVE_MMX && !HAVE_AMD3DNOW && !HAVE_MMX2) || CONFIG_RUNTIME_CPUDETECT
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#define COMPILE_MMX
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#endif
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#if (HAVE_MMX2 && !HAVE_SSE2) || CONFIG_RUNTIME_CPUDETECT
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#define COMPILE_MMX2
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#endif
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#if (HAVE_AMD3DNOW && !HAVE_MMX2) || CONFIG_RUNTIME_CPUDETECT
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#define COMPILE_3DNOW
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#endif
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#if HAVE_SSE2 || CONFIG_RUNTIME_CPUDETECT
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#define COMPILE_SSE
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#endif
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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 0
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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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/*
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#ifdef COMPILE_C
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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 0
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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 ## _C
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#include "aclib_template.c"
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#endif
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*/
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//MMX versions
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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 "aclib_template.c"
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#endif
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//MMX2 versions
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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 "aclib_template.c"
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#endif
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//3DNOW versions
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#ifdef COMPILE_3DNOW
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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 "aclib_template.c"
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#endif
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//SSE versions (only used on SSE2 cpus)
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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 "aclib_template.c"
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#endif
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#endif /* ARCH_X86 */
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#undef fast_memcpy
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void * fast_memcpy(void * to, const void * from, size_t len)
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{
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#if CONFIG_RUNTIME_CPUDETECT
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#if ARCH_X86
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// ordered per speed fasterst first
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if(gCpuCaps.hasSSE2)
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fast_memcpy_SSE(to, from, len);
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else if(gCpuCaps.hasMMX2)
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fast_memcpy_MMX2(to, from, len);
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else if(gCpuCaps.has3DNow)
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fast_memcpy_3DNow(to, from, len);
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else if(gCpuCaps.hasMMX)
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fast_memcpy_MMX(to, from, len);
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else
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#endif
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memcpy(to, from, len); // prior to mmx we use the standart memcpy
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#else
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#if HAVE_SSE2
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fast_memcpy_SSE(to, from, len);
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#elif HAVE_MMX2
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fast_memcpy_MMX2(to, from, len);
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#elif HAVE_AMD3DNOW
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fast_memcpy_3DNow(to, from, len);
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#elif HAVE_MMX
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fast_memcpy_MMX(to, from, len);
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#else
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memcpy(to, from, len); // prior to mmx we use the standart memcpy
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#endif
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#endif //!CONFIG_RUNTIME_CPUDETECT
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return to;
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}
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#undef mem2agpcpy
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void * mem2agpcpy(void * to, const void * from, size_t len)
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{
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#if CONFIG_RUNTIME_CPUDETECT
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#if ARCH_X86
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// ordered per speed fasterst first
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if(gCpuCaps.hasSSE2)
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mem2agpcpy_SSE(to, from, len);
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else if(gCpuCaps.hasMMX2)
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mem2agpcpy_MMX2(to, from, len);
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else if(gCpuCaps.has3DNow)
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mem2agpcpy_3DNow(to, from, len);
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else if(gCpuCaps.hasMMX)
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mem2agpcpy_MMX(to, from, len);
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else
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#endif
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memcpy(to, from, len); // prior to mmx we use the standart memcpy
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#else
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#if HAVE_SSE2
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mem2agpcpy_SSE(to, from, len);
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#elif HAVE_MMX2
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mem2agpcpy_MMX2(to, from, len);
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#elif HAVE_AMD3DNOW
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mem2agpcpy_3DNow(to, from, len);
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#elif HAVE_MMX
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mem2agpcpy_MMX(to, from, len);
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#else
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memcpy(to, from, len); // prior to mmx we use the standart memcpy
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#endif
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#endif //!CONFIG_RUNTIME_CPUDETECT
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return to;
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}
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