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239fdf1b4a
Refactoring mmx2/mmxext YASM code with cpuflags will force renames. So switching to a consistent naming scheme beforehand is sensible. The name "mmxext" is more official and widespread and also the name of the CPU flag, as reported e.g. by the Linux kernel.
168 lines
6.6 KiB
C
168 lines
6.6 KiB
C
/*
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* This file is part of Libav.
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*
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* Libav is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* Libav 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 GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with Libav; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "cpu.h"
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#include "config.h"
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#include "opt.h"
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static int cpuflags_mask = -1, checked;
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int av_get_cpu_flags(void)
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{
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static int flags;
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if (checked)
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return flags;
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if (ARCH_ARM) flags = ff_get_cpu_flags_arm();
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if (ARCH_PPC) flags = ff_get_cpu_flags_ppc();
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if (ARCH_X86) flags = ff_get_cpu_flags_x86();
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flags &= cpuflags_mask;
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checked = 1;
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return flags;
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}
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void av_set_cpu_flags_mask(int mask)
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{
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cpuflags_mask = mask;
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checked = 0;
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}
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int av_parse_cpu_flags(const char *s)
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{
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#define CPUFLAG_MMXEXT (AV_CPU_FLAG_MMX | AV_CPU_FLAG_MMXEXT | AV_CPU_FLAG_CMOV)
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#define CPUFLAG_3DNOW (AV_CPU_FLAG_3DNOW | AV_CPU_FLAG_MMX)
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#define CPUFLAG_3DNOWEXT (AV_CPU_FLAG_3DNOWEXT | CPUFLAG_3DNOW)
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#define CPUFLAG_SSE (AV_CPU_FLAG_SSE | CPUFLAG_MMXEXT)
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#define CPUFLAG_SSE2 (AV_CPU_FLAG_SSE2 | CPUFLAG_SSE)
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#define CPUFLAG_SSE2SLOW (AV_CPU_FLAG_SSE2SLOW | CPUFLAG_SSE2)
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#define CPUFLAG_SSE3 (AV_CPU_FLAG_SSE3 | CPUFLAG_SSE2)
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#define CPUFLAG_SSE3SLOW (AV_CPU_FLAG_SSE3SLOW | CPUFLAG_SSE3)
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#define CPUFLAG_SSSE3 (AV_CPU_FLAG_SSSE3 | CPUFLAG_SSE3)
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#define CPUFLAG_SSE4 (AV_CPU_FLAG_SSE4 | CPUFLAG_SSSE3)
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#define CPUFLAG_SSE42 (AV_CPU_FLAG_SSE42 | CPUFLAG_SSE4)
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#define CPUFLAG_AVX (AV_CPU_FLAG_AVX | CPUFLAG_SSE42)
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#define CPUFLAG_XOP (AV_CPU_FLAG_XOP | CPUFLAG_AVX)
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#define CPUFLAG_FMA4 (AV_CPU_FLAG_FMA4 | CPUFLAG_AVX)
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static const AVOption cpuflags_opts[] = {
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{ "flags" , NULL, 0, AV_OPT_TYPE_FLAGS, { 0 }, INT64_MIN, INT64_MAX, .unit = "flags" },
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#if ARCH_PPC
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{ "altivec" , NULL, 0, AV_OPT_TYPE_CONST, { AV_CPU_FLAG_ALTIVEC }, .unit = "flags" },
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#elif ARCH_X86
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{ "mmx" , NULL, 0, AV_OPT_TYPE_CONST, { AV_CPU_FLAG_MMX }, .unit = "flags" },
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{ "mmxext" , NULL, 0, AV_OPT_TYPE_CONST, { CPUFLAG_MMXEXT }, .unit = "flags" },
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{ "sse" , NULL, 0, AV_OPT_TYPE_CONST, { CPUFLAG_SSE }, .unit = "flags" },
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{ "sse2" , NULL, 0, AV_OPT_TYPE_CONST, { CPUFLAG_SSE2 }, .unit = "flags" },
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{ "sse2slow", NULL, 0, AV_OPT_TYPE_CONST, { CPUFLAG_SSE2SLOW }, .unit = "flags" },
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{ "sse3" , NULL, 0, AV_OPT_TYPE_CONST, { CPUFLAG_SSE3 }, .unit = "flags" },
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{ "sse3slow", NULL, 0, AV_OPT_TYPE_CONST, { CPUFLAG_SSE3SLOW }, .unit = "flags" },
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{ "ssse3" , NULL, 0, AV_OPT_TYPE_CONST, { CPUFLAG_SSSE3 }, .unit = "flags" },
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{ "atom" , NULL, 0, AV_OPT_TYPE_CONST, { AV_CPU_FLAG_ATOM }, .unit = "flags" },
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{ "sse4.1" , NULL, 0, AV_OPT_TYPE_CONST, { CPUFLAG_SSE4 }, .unit = "flags" },
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{ "sse4.2" , NULL, 0, AV_OPT_TYPE_CONST, { CPUFLAG_SSE42 }, .unit = "flags" },
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{ "avx" , NULL, 0, AV_OPT_TYPE_CONST, { CPUFLAG_AVX }, .unit = "flags" },
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{ "xop" , NULL, 0, AV_OPT_TYPE_CONST, { CPUFLAG_XOP }, .unit = "flags" },
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{ "fma4" , NULL, 0, AV_OPT_TYPE_CONST, { CPUFLAG_FMA4 }, .unit = "flags" },
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{ "3dnow" , NULL, 0, AV_OPT_TYPE_CONST, { CPUFLAG_3DNOW }, .unit = "flags" },
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{ "3dnowext", NULL, 0, AV_OPT_TYPE_CONST, { CPUFLAG_3DNOWEXT }, .unit = "flags" },
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{ "cmov", NULL, 0, AV_OPT_TYPE_CONST, { AV_CPU_FLAG_CMOV }, .unit = "flags" },
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#elif ARCH_ARM
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{ "armv5te", NULL, 0, AV_OPT_TYPE_CONST, { AV_CPU_FLAG_ARMV5TE }, .unit = "flags" },
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{ "armv6", NULL, 0, AV_OPT_TYPE_CONST, { AV_CPU_FLAG_ARMV6 }, .unit = "flags" },
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{ "armv6t2", NULL, 0, AV_OPT_TYPE_CONST, { AV_CPU_FLAG_ARMV6T2 }, .unit = "flags" },
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{ "vfp", NULL, 0, AV_OPT_TYPE_CONST, { AV_CPU_FLAG_VFP }, .unit = "flags" },
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{ "vfpv3", NULL, 0, AV_OPT_TYPE_CONST, { AV_CPU_FLAG_VFPV3 }, .unit = "flags" },
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{ "neon", NULL, 0, AV_OPT_TYPE_CONST, { AV_CPU_FLAG_NEON }, .unit = "flags" },
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#endif
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{ NULL },
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};
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static const AVClass class = {
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.class_name = "cpuflags",
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.item_name = av_default_item_name,
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.option = cpuflags_opts,
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.version = LIBAVUTIL_VERSION_INT,
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};
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int flags = 0, ret;
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const AVClass *pclass = &class;
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if ((ret = av_opt_eval_flags(&pclass, &cpuflags_opts[0], s, &flags)) < 0)
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return ret;
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return flags & INT_MAX;
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}
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#ifdef TEST
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#undef printf
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#include <stdio.h>
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static const struct {
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int flag;
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const char *name;
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} cpu_flag_tab[] = {
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#if ARCH_ARM
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{ AV_CPU_FLAG_ARMV5TE, "armv5te" },
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{ AV_CPU_FLAG_ARMV6, "armv6" },
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{ AV_CPU_FLAG_ARMV6T2, "armv6t2" },
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{ AV_CPU_FLAG_VFP, "vfp" },
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{ AV_CPU_FLAG_VFPV3, "vfpv3" },
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{ AV_CPU_FLAG_NEON, "neon" },
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#elif ARCH_PPC
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{ AV_CPU_FLAG_ALTIVEC, "altivec" },
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#elif ARCH_X86
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{ AV_CPU_FLAG_MMX, "mmx" },
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{ AV_CPU_FLAG_MMXEXT, "mmxext" },
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{ AV_CPU_FLAG_SSE, "sse" },
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{ AV_CPU_FLAG_SSE2, "sse2" },
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{ AV_CPU_FLAG_SSE2SLOW, "sse2(slow)" },
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{ AV_CPU_FLAG_SSE3, "sse3" },
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{ AV_CPU_FLAG_SSE3SLOW, "sse3(slow)" },
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{ AV_CPU_FLAG_SSSE3, "ssse3" },
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{ AV_CPU_FLAG_ATOM, "atom" },
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{ AV_CPU_FLAG_SSE4, "sse4.1" },
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{ AV_CPU_FLAG_SSE42, "sse4.2" },
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{ AV_CPU_FLAG_AVX, "avx" },
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{ AV_CPU_FLAG_XOP, "xop" },
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{ AV_CPU_FLAG_FMA4, "fma4" },
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{ AV_CPU_FLAG_3DNOW, "3dnow" },
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{ AV_CPU_FLAG_3DNOWEXT, "3dnowext" },
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{ AV_CPU_FLAG_CMOV, "cmov" },
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#endif
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{ 0 }
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};
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int main(void)
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{
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int cpu_flags = av_get_cpu_flags();
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int i;
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printf("cpu_flags = 0x%08X\n", cpu_flags);
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printf("cpu_flags =");
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for (i = 0; cpu_flag_tab[i].flag; i++)
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if (cpu_flags & cpu_flag_tab[i].flag)
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printf(" %s", cpu_flag_tab[i].name);
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printf("\n");
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return 0;
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}
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#endif
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