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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 4349 | Serge | 1 | /* |
| 2 | * This file is part of FFmpeg. |
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| 3 | * |
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| 4 | * FFmpeg is free software; you can redistribute it and/or |
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| 5 | * modify it under the terms of the GNU Lesser General Public |
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| 6 | * License as published by the Free Software Foundation; either |
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| 7 | * version 2.1 of the License, or (at your option) any later version. |
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| 8 | * |
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| 9 | * FFmpeg is distributed in the hope that it will be useful, |
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| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 12 | * Lesser General Public License for more details. |
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| 13 | * |
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| 14 | * You should have received a copy of the GNU Lesser General Public |
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| 15 | * License along with FFmpeg; if not, write to the Free Software |
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| 16 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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| 17 | */ |
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| 18 | |||
| 19 | #include "cpu.h" |
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| 20 | #include "cpu_internal.h" |
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| 21 | #include "config.h" |
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| 22 | #include "opt.h" |
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| 23 | #include "common.h" |
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| 24 | |||
| 25 | #if HAVE_SCHED_GETAFFINITY |
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| 26 | #ifndef _GNU_SOURCE |
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| 27 | # define _GNU_SOURCE |
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| 28 | #endif |
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| 29 | #include |
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| 30 | #endif |
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| 31 | #if HAVE_GETPROCESSAFFINITYMASK |
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| 32 | #include |
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| 33 | #endif |
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| 34 | #if HAVE_SYSCTL |
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| 35 | #if HAVE_SYS_PARAM_H |
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| 36 | #include |
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| 37 | #endif |
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| 38 | #include |
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| 39 | #include |
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| 40 | #endif |
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| 41 | #if HAVE_SYSCONF |
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| 42 | #include |
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| 43 | #endif |
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| 44 | |||
| 45 | static int flags, checked; |
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| 46 | |||
| 47 | void av_force_cpu_flags(int arg){ |
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| 48 | flags = arg; |
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| 49 | checked = arg != -1; |
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| 50 | } |
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| 51 | |||
| 52 | int av_get_cpu_flags(void) |
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| 53 | { |
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| 54 | if (checked) |
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| 55 | return flags; |
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| 56 | |||
| 57 | if (ARCH_ARM) flags = ff_get_cpu_flags_arm(); |
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| 58 | if (ARCH_PPC) flags = ff_get_cpu_flags_ppc(); |
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| 59 | if (ARCH_X86) flags = ff_get_cpu_flags_x86(); |
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| 60 | |||
| 61 | checked = 1; |
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| 62 | return flags; |
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| 63 | } |
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| 64 | |||
| 65 | void av_set_cpu_flags_mask(int mask) |
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| 66 | { |
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| 67 | checked = 0; |
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| 68 | flags = av_get_cpu_flags() & mask; |
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| 69 | checked = 1; |
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| 70 | } |
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| 71 | |||
| 72 | int av_parse_cpu_flags(const char *s) |
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| 73 | { |
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| 74 | #define CPUFLAG_MMXEXT (AV_CPU_FLAG_MMX | AV_CPU_FLAG_MMXEXT | AV_CPU_FLAG_CMOV) |
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| 75 | #define CPUFLAG_3DNOW (AV_CPU_FLAG_3DNOW | AV_CPU_FLAG_MMX) |
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| 76 | #define CPUFLAG_3DNOWEXT (AV_CPU_FLAG_3DNOWEXT | CPUFLAG_3DNOW) |
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| 77 | #define CPUFLAG_SSE (AV_CPU_FLAG_SSE | CPUFLAG_MMXEXT) |
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| 78 | #define CPUFLAG_SSE2 (AV_CPU_FLAG_SSE2 | CPUFLAG_SSE) |
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| 79 | #define CPUFLAG_SSE2SLOW (AV_CPU_FLAG_SSE2SLOW | CPUFLAG_SSE2) |
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| 80 | #define CPUFLAG_SSE3 (AV_CPU_FLAG_SSE3 | CPUFLAG_SSE2) |
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| 81 | #define CPUFLAG_SSE3SLOW (AV_CPU_FLAG_SSE3SLOW | CPUFLAG_SSE3) |
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| 82 | #define CPUFLAG_SSSE3 (AV_CPU_FLAG_SSSE3 | CPUFLAG_SSE3) |
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| 83 | #define CPUFLAG_SSE4 (AV_CPU_FLAG_SSE4 | CPUFLAG_SSSE3) |
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| 84 | #define CPUFLAG_SSE42 (AV_CPU_FLAG_SSE42 | CPUFLAG_SSE4) |
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| 85 | #define CPUFLAG_AVX (AV_CPU_FLAG_AVX | CPUFLAG_SSE42) |
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| 86 | #define CPUFLAG_XOP (AV_CPU_FLAG_XOP | CPUFLAG_AVX) |
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| 87 | #define CPUFLAG_FMA4 (AV_CPU_FLAG_FMA4 | CPUFLAG_AVX) |
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| 88 | #define CPUFLAG_AVX2 (AV_CPU_FLAG_AVX2 | CPUFLAG_AVX) |
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| 89 | static const AVOption cpuflags_opts[] = { |
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| 90 | { "flags" , NULL, 0, AV_OPT_TYPE_FLAGS, { .i64 = 0 }, INT64_MIN, INT64_MAX, .unit = "flags" }, |
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| 91 | #if ARCH_PPC |
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| 92 | { "altivec" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_ALTIVEC }, .unit = "flags" }, |
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| 93 | #elif ARCH_X86 |
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| 94 | { "mmx" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_MMX }, .unit = "flags" }, |
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| 95 | { "mmxext" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_MMXEXT }, .unit = "flags" }, |
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| 96 | { "sse" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_SSE }, .unit = "flags" }, |
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| 97 | { "sse2" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_SSE2 }, .unit = "flags" }, |
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| 98 | { "sse2slow", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_SSE2SLOW }, .unit = "flags" }, |
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| 99 | { "sse3" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_SSE3 }, .unit = "flags" }, |
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| 100 | { "sse3slow", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_SSE3SLOW }, .unit = "flags" }, |
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| 101 | { "ssse3" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_SSSE3 }, .unit = "flags" }, |
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| 102 | { "atom" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_ATOM }, .unit = "flags" }, |
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| 103 | { "sse4.1" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_SSE4 }, .unit = "flags" }, |
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| 104 | { "sse4.2" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_SSE42 }, .unit = "flags" }, |
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| 105 | { "avx" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_AVX }, .unit = "flags" }, |
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| 106 | { "xop" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_XOP }, .unit = "flags" }, |
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| 107 | { "fma4" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_FMA4 }, .unit = "flags" }, |
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| 108 | { "avx2" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_AVX2 }, .unit = "flags" }, |
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| 109 | { "3dnow" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_3DNOW }, .unit = "flags" }, |
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| 110 | { "3dnowext", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_3DNOWEXT }, .unit = "flags" }, |
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| 111 | { "cmov", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_CMOV }, .unit = "flags" }, |
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| 112 | #elif ARCH_ARM |
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| 113 | { "armv5te", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_ARMV5TE }, .unit = "flags" }, |
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| 114 | { "armv6", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_ARMV6 }, .unit = "flags" }, |
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| 115 | { "armv6t2", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_ARMV6T2 }, .unit = "flags" }, |
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| 116 | { "vfp", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_VFP }, .unit = "flags" }, |
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| 117 | { "vfpv3", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_VFPV3 }, .unit = "flags" }, |
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| 118 | { "neon", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_NEON }, .unit = "flags" }, |
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| 119 | #endif |
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| 120 | { NULL }, |
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| 121 | }; |
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| 122 | static const AVClass class = { |
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| 123 | .class_name = "cpuflags", |
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| 124 | .item_name = av_default_item_name, |
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| 125 | .option = cpuflags_opts, |
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| 126 | .version = LIBAVUTIL_VERSION_INT, |
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| 127 | }; |
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| 128 | |||
| 129 | int flags = 0, ret; |
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| 130 | const AVClass *pclass = &class; |
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| 131 | |||
| 132 | if ((ret = av_opt_eval_flags(&pclass, &cpuflags_opts[0], s, &flags)) < 0) |
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| 133 | return ret; |
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| 134 | |||
| 135 | return flags & INT_MAX; |
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| 136 | } |
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| 137 | |||
| 138 | int av_parse_cpu_caps(unsigned *flags, const char *s) |
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| 139 | { |
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| 140 | static const AVOption cpuflags_opts[] = { |
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| 141 | { "flags" , NULL, 0, AV_OPT_TYPE_FLAGS, { .i64 = 0 }, INT64_MIN, INT64_MAX, .unit = "flags" }, |
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| 142 | #if ARCH_PPC |
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| 143 | { "altivec" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_ALTIVEC }, .unit = "flags" }, |
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| 144 | #elif ARCH_X86 |
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| 145 | { "mmx" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_MMX }, .unit = "flags" }, |
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| 146 | { "mmx2" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_MMX2 }, .unit = "flags" }, |
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| 147 | { "mmxext" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_MMX2 }, .unit = "flags" }, |
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| 148 | { "sse" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_SSE }, .unit = "flags" }, |
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| 149 | { "sse2" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_SSE2 }, .unit = "flags" }, |
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| 150 | { "sse2slow", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_SSE2SLOW }, .unit = "flags" }, |
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| 151 | { "sse3" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_SSE3 }, .unit = "flags" }, |
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| 152 | { "sse3slow", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_SSE3SLOW }, .unit = "flags" }, |
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| 153 | { "ssse3" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_SSSE3 }, .unit = "flags" }, |
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| 154 | { "atom" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_ATOM }, .unit = "flags" }, |
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| 155 | { "sse4.1" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_SSE4 }, .unit = "flags" }, |
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| 156 | { "sse4.2" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_SSE42 }, .unit = "flags" }, |
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| 157 | { "avx" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_AVX }, .unit = "flags" }, |
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| 158 | { "xop" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_XOP }, .unit = "flags" }, |
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| 159 | { "fma4" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_FMA4 }, .unit = "flags" }, |
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| 160 | { "3dnow" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_3DNOW }, .unit = "flags" }, |
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| 161 | { "3dnowext", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_3DNOWEXT }, .unit = "flags" }, |
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| 162 | { "cmov", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_CMOV }, .unit = "flags" }, |
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| 163 | |||
| 164 | #define CPU_FLAG_P2 AV_CPU_FLAG_CMOV | AV_CPU_FLAG_MMX |
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| 165 | #define CPU_FLAG_P3 CPU_FLAG_P2 | AV_CPU_FLAG_MMX2 | AV_CPU_FLAG_SSE |
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| 166 | #define CPU_FLAG_P4 CPU_FLAG_P3| AV_CPU_FLAG_SSE2 |
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| 167 | { "pentium2", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPU_FLAG_P2 }, .unit = "flags" }, |
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| 168 | { "pentium3", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPU_FLAG_P3 }, .unit = "flags" }, |
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| 169 | { "pentium4", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPU_FLAG_P4 }, .unit = "flags" }, |
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| 170 | |||
| 171 | #define CPU_FLAG_K62 AV_CPU_FLAG_MMX | AV_CPU_FLAG_3DNOW |
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| 172 | #define CPU_FLAG_ATHLON CPU_FLAG_K62 | AV_CPU_FLAG_CMOV | AV_CPU_FLAG_3DNOWEXT | AV_CPU_FLAG_MMX2 |
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| 173 | #define CPU_FLAG_ATHLONXP CPU_FLAG_ATHLON | AV_CPU_FLAG_SSE |
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| 174 | #define CPU_FLAG_K8 CPU_FLAG_ATHLONXP | AV_CPU_FLAG_SSE2 |
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| 175 | { "k6", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_MMX }, .unit = "flags" }, |
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| 176 | { "k62", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPU_FLAG_K62 }, .unit = "flags" }, |
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| 177 | { "athlon", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPU_FLAG_ATHLON }, .unit = "flags" }, |
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| 178 | { "athlonxp", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPU_FLAG_ATHLONXP }, .unit = "flags" }, |
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| 179 | { "k8", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPU_FLAG_K8 }, .unit = "flags" }, |
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| 180 | #elif ARCH_ARM |
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| 181 | { "armv5te", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_ARMV5TE }, .unit = "flags" }, |
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| 182 | { "armv6", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_ARMV6 }, .unit = "flags" }, |
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| 183 | { "armv6t2", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_ARMV6T2 }, .unit = "flags" }, |
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| 184 | { "vfp", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_VFP }, .unit = "flags" }, |
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| 185 | { "vfpv3", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_VFPV3 }, .unit = "flags" }, |
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| 186 | { "neon", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_NEON }, .unit = "flags" }, |
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| 187 | #endif |
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| 188 | { NULL }, |
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| 189 | }; |
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| 190 | static const AVClass class = { |
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| 191 | .class_name = "cpuflags", |
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| 192 | .item_name = av_default_item_name, |
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| 193 | .option = cpuflags_opts, |
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| 194 | .version = LIBAVUTIL_VERSION_INT, |
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| 195 | }; |
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| 196 | const AVClass *pclass = &class; |
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| 197 | |||
| 198 | return av_opt_eval_flags(&pclass, &cpuflags_opts[0], s, flags); |
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| 199 | } |
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| 200 | |||
| 201 | int av_cpu_count(void) |
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| 202 | { |
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| 203 | static volatile int printed; |
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| 204 | |||
| 205 | int nb_cpus = 1; |
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| 206 | #if HAVE_SCHED_GETAFFINITY && defined(CPU_COUNT) |
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| 207 | cpu_set_t cpuset; |
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| 208 | |||
| 209 | CPU_ZERO(&cpuset); |
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| 210 | |||
| 211 | if (!sched_getaffinity(0, sizeof(cpuset), &cpuset)) |
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| 212 | nb_cpus = CPU_COUNT(&cpuset); |
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| 213 | #elif HAVE_GETPROCESSAFFINITYMASK |
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| 214 | DWORD_PTR proc_aff, sys_aff; |
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| 215 | if (GetProcessAffinityMask(GetCurrentProcess(), &proc_aff, &sys_aff)) |
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| 216 | nb_cpus = av_popcount64(proc_aff); |
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| 217 | #elif HAVE_SYSCTL && defined(HW_NCPU) |
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| 218 | int mib[2] = { CTL_HW, HW_NCPU }; |
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| 219 | size_t len = sizeof(nb_cpus); |
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| 220 | |||
| 221 | if (sysctl(mib, 2, &nb_cpus, &len, NULL, 0) == -1) |
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| 222 | nb_cpus = 0; |
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| 223 | #elif HAVE_SYSCONF && defined(_SC_NPROC_ONLN) |
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| 224 | nb_cpus = sysconf(_SC_NPROC_ONLN); |
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| 225 | #elif HAVE_SYSCONF && defined(_SC_NPROCESSORS_ONLN) |
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| 226 | nb_cpus = sysconf(_SC_NPROCESSORS_ONLN); |
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| 227 | #endif |
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| 228 | |||
| 229 | if (!printed) { |
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| 230 | av_log(NULL, AV_LOG_DEBUG, "detected %d logical cores\n", nb_cpus); |
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| 231 | printed = 1; |
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| 232 | } |
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| 233 | |||
| 234 | return nb_cpus; |
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| 235 | } |
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| 236 | |||
| 237 | #ifdef TEST |
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| 238 | |||
| 239 | #include |
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| 240 | |||
| 241 | static const struct { |
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| 242 | int flag; |
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| 243 | const char *name; |
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| 244 | } cpu_flag_tab[] = { |
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| 245 | #if ARCH_ARM |
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| 246 | { AV_CPU_FLAG_ARMV5TE, "armv5te" }, |
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| 247 | { AV_CPU_FLAG_ARMV6, "armv6" }, |
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| 248 | { AV_CPU_FLAG_ARMV6T2, "armv6t2" }, |
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| 249 | { AV_CPU_FLAG_VFP, "vfp" }, |
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| 250 | { AV_CPU_FLAG_VFPV3, "vfpv3" }, |
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| 251 | { AV_CPU_FLAG_NEON, "neon" }, |
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| 252 | #elif ARCH_PPC |
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| 253 | { AV_CPU_FLAG_ALTIVEC, "altivec" }, |
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| 254 | #elif ARCH_X86 |
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| 255 | { AV_CPU_FLAG_MMX, "mmx" }, |
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| 256 | { AV_CPU_FLAG_MMXEXT, "mmxext" }, |
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| 257 | { AV_CPU_FLAG_SSE, "sse" }, |
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| 258 | { AV_CPU_FLAG_SSE2, "sse2" }, |
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| 259 | { AV_CPU_FLAG_SSE2SLOW, "sse2(slow)" }, |
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| 260 | { AV_CPU_FLAG_SSE3, "sse3" }, |
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| 261 | { AV_CPU_FLAG_SSE3SLOW, "sse3(slow)" }, |
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| 262 | { AV_CPU_FLAG_SSSE3, "ssse3" }, |
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| 263 | { AV_CPU_FLAG_ATOM, "atom" }, |
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| 264 | { AV_CPU_FLAG_SSE4, "sse4.1" }, |
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| 265 | { AV_CPU_FLAG_SSE42, "sse4.2" }, |
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| 266 | { AV_CPU_FLAG_AVX, "avx" }, |
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| 267 | { AV_CPU_FLAG_XOP, "xop" }, |
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| 268 | { AV_CPU_FLAG_FMA4, "fma4" }, |
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| 269 | { AV_CPU_FLAG_3DNOW, "3dnow" }, |
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| 270 | { AV_CPU_FLAG_3DNOWEXT, "3dnowext" }, |
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| 271 | { AV_CPU_FLAG_CMOV, "cmov" }, |
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| 272 | { AV_CPU_FLAG_AVX2, "avx2" }, |
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| 273 | #endif |
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| 274 | { 0 } |
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| 275 | }; |
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| 276 | |||
| 277 | int main(void) |
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| 278 | { |
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| 279 | int cpu_flags = av_get_cpu_flags(); |
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| 280 | int i; |
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| 281 | |||
| 282 | printf("cpu_flags = 0x%08X\n", cpu_flags); |
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| 283 | printf("cpu_flags ="); |
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| 284 | for (i = 0; cpu_flag_tab[i].flag; i++) |
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| 285 | if (cpu_flags & cpu_flag_tab[i].flag) |
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| 286 | printf(" %s", cpu_flag_tab[i].name); |
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| 287 | printf("\n"); |
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| 288 | |||
| 289 | return 0; |
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| 290 | } |
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| 291 | |||
| 292 | #endif |