322 lines
16 KiB
C
322 lines
16 KiB
C
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/*
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* This file is part of FFmpeg.
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*
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* FFmpeg 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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* FFmpeg 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 FFmpeg; 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 <stddef.h>
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#include <stdint.h>
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#include <stdatomic.h>
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#include "attributes.h"
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#include "cpu.h"
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#include "cpu_internal.h"
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#include "config.h"
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#include "opt.h"
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#include "common.h"
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#if HAVE_SCHED_GETAFFINITY
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#ifndef _GNU_SOURCE
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# define _GNU_SOURCE
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#endif
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#include <sched.h>
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#endif
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#if HAVE_GETPROCESSAFFINITYMASK || HAVE_WINRT
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#include <windows.h>
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#endif
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#if HAVE_SYSCTL
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#if HAVE_SYS_PARAM_H
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#include <sys/param.h>
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#endif
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#include <sys/types.h>
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#include <sys/sysctl.h>
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#endif
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#if HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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static atomic_int cpu_flags = ATOMIC_VAR_INIT(-1);
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static int get_cpu_flags(void)
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{
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if (ARCH_AARCH64)
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return ff_get_cpu_flags_aarch64();
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if (ARCH_ARM)
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return ff_get_cpu_flags_arm();
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if (ARCH_PPC)
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return ff_get_cpu_flags_ppc();
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if (ARCH_X86)
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return ff_get_cpu_flags_x86();
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return 0;
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}
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void av_force_cpu_flags(int arg){
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if (ARCH_X86 &&
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(arg & ( AV_CPU_FLAG_3DNOW |
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AV_CPU_FLAG_3DNOWEXT |
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AV_CPU_FLAG_MMXEXT |
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AV_CPU_FLAG_SSE |
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AV_CPU_FLAG_SSE2 |
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AV_CPU_FLAG_SSE2SLOW |
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AV_CPU_FLAG_SSE3 |
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AV_CPU_FLAG_SSE3SLOW |
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AV_CPU_FLAG_SSSE3 |
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AV_CPU_FLAG_SSE4 |
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AV_CPU_FLAG_SSE42 |
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AV_CPU_FLAG_AVX |
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AV_CPU_FLAG_AVXSLOW |
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AV_CPU_FLAG_XOP |
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AV_CPU_FLAG_FMA3 |
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AV_CPU_FLAG_FMA4 |
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AV_CPU_FLAG_AVX2 |
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AV_CPU_FLAG_AVX512 ))
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&& !(arg & AV_CPU_FLAG_MMX)) {
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av_log(NULL, AV_LOG_WARNING, "MMX implied by specified flags\n");
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arg |= AV_CPU_FLAG_MMX;
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}
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atomic_store_explicit(&cpu_flags, arg, memory_order_relaxed);
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}
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int av_get_cpu_flags(void)
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{
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int flags = atomic_load_explicit(&cpu_flags, memory_order_relaxed);
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if (flags == -1) {
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flags = get_cpu_flags();
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atomic_store_explicit(&cpu_flags, flags, memory_order_relaxed);
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}
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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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atomic_store_explicit(&cpu_flags, get_cpu_flags() & mask,
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memory_order_relaxed);
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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_AVXSLOW (AV_CPU_FLAG_AVXSLOW | CPUFLAG_AVX)
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#define CPUFLAG_XOP (AV_CPU_FLAG_XOP | CPUFLAG_AVX)
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#define CPUFLAG_FMA3 (AV_CPU_FLAG_FMA3 | CPUFLAG_AVX)
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#define CPUFLAG_FMA4 (AV_CPU_FLAG_FMA4 | CPUFLAG_AVX)
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#define CPUFLAG_AVX2 (AV_CPU_FLAG_AVX2 | CPUFLAG_AVX)
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#define CPUFLAG_BMI2 (AV_CPU_FLAG_BMI2 | AV_CPU_FLAG_BMI1)
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#define CPUFLAG_AESNI (AV_CPU_FLAG_AESNI | CPUFLAG_SSE42)
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#define CPUFLAG_AVX512 (AV_CPU_FLAG_AVX512 | CPUFLAG_AVX2)
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static const AVOption cpuflags_opts[] = {
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{ "flags" , NULL, 0, AV_OPT_TYPE_FLAGS, { .i64 = 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, { .i64 = AV_CPU_FLAG_ALTIVEC }, .unit = "flags" },
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#elif ARCH_X86
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{ "mmx" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_MMX }, .unit = "flags" },
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{ "mmxext" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_MMXEXT }, .unit = "flags" },
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{ "sse" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_SSE }, .unit = "flags" },
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{ "sse2" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_SSE2 }, .unit = "flags" },
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{ "sse2slow", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_SSE2SLOW }, .unit = "flags" },
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{ "sse3" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_SSE3 }, .unit = "flags" },
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{ "sse3slow", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_SSE3SLOW }, .unit = "flags" },
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{ "ssse3" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_SSSE3 }, .unit = "flags" },
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{ "atom" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_ATOM }, .unit = "flags" },
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{ "sse4.1" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_SSE4 }, .unit = "flags" },
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{ "sse4.2" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_SSE42 }, .unit = "flags" },
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{ "avx" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_AVX }, .unit = "flags" },
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{ "avxslow" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_AVXSLOW }, .unit = "flags" },
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{ "xop" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_XOP }, .unit = "flags" },
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{ "fma3" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_FMA3 }, .unit = "flags" },
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{ "fma4" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_FMA4 }, .unit = "flags" },
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{ "avx2" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_AVX2 }, .unit = "flags" },
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{ "bmi1" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_BMI1 }, .unit = "flags" },
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{ "bmi2" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_BMI2 }, .unit = "flags" },
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{ "3dnow" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_3DNOW }, .unit = "flags" },
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{ "3dnowext", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_3DNOWEXT }, .unit = "flags" },
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{ "cmov", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_CMOV }, .unit = "flags" },
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{ "aesni" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_AESNI }, .unit = "flags" },
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{ "avx512" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_AVX512 }, .unit = "flags" },
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#elif ARCH_ARM
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{ "armv5te", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_ARMV5TE }, .unit = "flags" },
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{ "armv6", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_ARMV6 }, .unit = "flags" },
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{ "armv6t2", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_ARMV6T2 }, .unit = "flags" },
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{ "vfp", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_VFP }, .unit = "flags" },
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{ "vfp_vm", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_VFP_VM }, .unit = "flags" },
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{ "vfpv3", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_VFPV3 }, .unit = "flags" },
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{ "neon", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_NEON }, .unit = "flags" },
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#elif ARCH_AARCH64
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{ "armv8", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_ARMV8 }, .unit = "flags" },
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{ "neon", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_NEON }, .unit = "flags" },
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{ "vfp", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_VFP }, .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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int av_parse_cpu_caps(unsigned *flags, const char *s)
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{
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static const AVOption cpuflags_opts[] = {
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{ "flags" , NULL, 0, AV_OPT_TYPE_FLAGS, { .i64 = 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, { .i64 = AV_CPU_FLAG_ALTIVEC }, .unit = "flags" },
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#elif ARCH_X86
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{ "mmx" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_MMX }, .unit = "flags" },
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{ "mmx2" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_MMX2 }, .unit = "flags" },
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{ "mmxext" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_MMX2 }, .unit = "flags" },
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{ "sse" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_SSE }, .unit = "flags" },
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{ "sse2" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_SSE2 }, .unit = "flags" },
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{ "sse2slow", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_SSE2SLOW }, .unit = "flags" },
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{ "sse3" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_SSE3 }, .unit = "flags" },
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{ "sse3slow", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_SSE3SLOW }, .unit = "flags" },
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{ "ssse3" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_SSSE3 }, .unit = "flags" },
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{ "atom" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_ATOM }, .unit = "flags" },
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{ "sse4.1" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_SSE4 }, .unit = "flags" },
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{ "sse4.2" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_SSE42 }, .unit = "flags" },
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{ "avx" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_AVX }, .unit = "flags" },
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{ "avxslow" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_AVXSLOW }, .unit = "flags" },
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{ "xop" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_XOP }, .unit = "flags" },
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{ "fma3" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_FMA3 }, .unit = "flags" },
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{ "fma4" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_FMA4 }, .unit = "flags" },
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{ "avx2" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_AVX2 }, .unit = "flags" },
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{ "bmi1" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_BMI1 }, .unit = "flags" },
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{ "bmi2" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_BMI2 }, .unit = "flags" },
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{ "3dnow" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_3DNOW }, .unit = "flags" },
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{ "3dnowext", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_3DNOWEXT }, .unit = "flags" },
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{ "cmov", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_CMOV }, .unit = "flags" },
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{ "aesni", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_AESNI }, .unit = "flags" },
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{ "avx512" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_AVX512 }, .unit = "flags" },
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#define CPU_FLAG_P2 AV_CPU_FLAG_CMOV | AV_CPU_FLAG_MMX
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#define CPU_FLAG_P3 CPU_FLAG_P2 | AV_CPU_FLAG_MMX2 | AV_CPU_FLAG_SSE
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#define CPU_FLAG_P4 CPU_FLAG_P3| AV_CPU_FLAG_SSE2
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{ "pentium2", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPU_FLAG_P2 }, .unit = "flags" },
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{ "pentium3", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPU_FLAG_P3 }, .unit = "flags" },
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{ "pentium4", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPU_FLAG_P4 }, .unit = "flags" },
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#define CPU_FLAG_K62 AV_CPU_FLAG_MMX | AV_CPU_FLAG_3DNOW
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#define CPU_FLAG_ATHLON CPU_FLAG_K62 | AV_CPU_FLAG_CMOV | AV_CPU_FLAG_3DNOWEXT | AV_CPU_FLAG_MMX2
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#define CPU_FLAG_ATHLONXP CPU_FLAG_ATHLON | AV_CPU_FLAG_SSE
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#define CPU_FLAG_K8 CPU_FLAG_ATHLONXP | AV_CPU_FLAG_SSE2
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{ "k6", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_MMX }, .unit = "flags" },
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{ "k62", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPU_FLAG_K62 }, .unit = "flags" },
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{ "athlon", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPU_FLAG_ATHLON }, .unit = "flags" },
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{ "athlonxp", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPU_FLAG_ATHLONXP }, .unit = "flags" },
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{ "k8", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPU_FLAG_K8 }, .unit = "flags" },
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#elif ARCH_ARM
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{ "armv5te", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_ARMV5TE }, .unit = "flags" },
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{ "armv6", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_ARMV6 }, .unit = "flags" },
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{ "armv6t2", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_ARMV6T2 }, .unit = "flags" },
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{ "vfp", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_VFP }, .unit = "flags" },
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|
{ "vfp_vm", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_VFP_VM }, .unit = "flags" },
|
||
|
|
{ "vfpv3", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_VFPV3 }, .unit = "flags" },
|
||
|
|
{ "neon", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_NEON }, .unit = "flags" },
|
||
|
|
{ "setend", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_SETEND }, .unit = "flags" },
|
||
|
|
#elif ARCH_AARCH64
|
||
|
|
{ "armv8", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_ARMV8 }, .unit = "flags" },
|
||
|
|
{ "neon", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_NEON }, .unit = "flags" },
|
||
|
|
{ "vfp", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_VFP }, .unit = "flags" },
|
||
|
|
#endif
|
||
|
|
{ NULL },
|
||
|
|
};
|
||
|
|
static const AVClass class = {
|
||
|
|
.class_name = "cpuflags",
|
||
|
|
.item_name = av_default_item_name,
|
||
|
|
.option = cpuflags_opts,
|
||
|
|
.version = LIBAVUTIL_VERSION_INT,
|
||
|
|
};
|
||
|
|
const AVClass *pclass = &class;
|
||
|
|
|
||
|
|
return av_opt_eval_flags(&pclass, &cpuflags_opts[0], s, flags);
|
||
|
|
}
|
||
|
|
|
||
|
|
int av_cpu_count(void)
|
||
|
|
{
|
||
|
|
static volatile int printed;
|
||
|
|
|
||
|
|
int nb_cpus = 1;
|
||
|
|
#if HAVE_WINRT
|
||
|
|
SYSTEM_INFO sysinfo;
|
||
|
|
#endif
|
||
|
|
#if HAVE_SCHED_GETAFFINITY && defined(CPU_COUNT)
|
||
|
|
cpu_set_t cpuset;
|
||
|
|
|
||
|
|
CPU_ZERO(&cpuset);
|
||
|
|
|
||
|
|
if (!sched_getaffinity(0, sizeof(cpuset), &cpuset))
|
||
|
|
nb_cpus = CPU_COUNT(&cpuset);
|
||
|
|
#elif HAVE_GETPROCESSAFFINITYMASK
|
||
|
|
DWORD_PTR proc_aff, sys_aff;
|
||
|
|
if (GetProcessAffinityMask(GetCurrentProcess(), &proc_aff, &sys_aff))
|
||
|
|
nb_cpus = av_popcount64(proc_aff);
|
||
|
|
#elif HAVE_SYSCTL && defined(HW_NCPU)
|
||
|
|
int mib[2] = { CTL_HW, HW_NCPU };
|
||
|
|
size_t len = sizeof(nb_cpus);
|
||
|
|
|
||
|
|
if (sysctl(mib, 2, &nb_cpus, &len, NULL, 0) == -1)
|
||
|
|
nb_cpus = 0;
|
||
|
|
#elif HAVE_SYSCONF && defined(_SC_NPROC_ONLN)
|
||
|
|
nb_cpus = sysconf(_SC_NPROC_ONLN);
|
||
|
|
#elif HAVE_SYSCONF && defined(_SC_NPROCESSORS_ONLN)
|
||
|
|
nb_cpus = sysconf(_SC_NPROCESSORS_ONLN);
|
||
|
|
#elif HAVE_WINRT
|
||
|
|
GetNativeSystemInfo(&sysinfo);
|
||
|
|
nb_cpus = sysinfo.dwNumberOfProcessors;
|
||
|
|
#endif
|
||
|
|
|
||
|
|
if (!printed) {
|
||
|
|
av_log(NULL, AV_LOG_DEBUG, "detected %d logical cores\n", nb_cpus);
|
||
|
|
printed = 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
return nb_cpus;
|
||
|
|
}
|
||
|
|
|
||
|
|
size_t av_cpu_max_align(void)
|
||
|
|
{
|
||
|
|
if (ARCH_AARCH64)
|
||
|
|
return ff_get_cpu_max_align_aarch64();
|
||
|
|
if (ARCH_ARM)
|
||
|
|
return ff_get_cpu_max_align_arm();
|
||
|
|
if (ARCH_PPC)
|
||
|
|
return ff_get_cpu_max_align_ppc();
|
||
|
|
if (ARCH_X86)
|
||
|
|
return ff_get_cpu_max_align_x86();
|
||
|
|
|
||
|
|
return 8;
|
||
|
|
}
|