libavutil/tests/cpu.c

   1 /*
   2  * This file is part of FFmpeg.
   3  *
   4  * FFmpeg is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 of the License, or (at your option) any later version.
   8  *
   9  * FFmpeg is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with FFmpeg; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  17  */
  18
  19 #include <stdio.h>
  20
  21 #include "config.h"
  22
  23 #include "libavutil/cpu.h"
  24 #include "libavutil/avstring.h"
  25
  26 #if ARCH_AARCH64
  27 #include "libavutil/aarch64/cpu.h"
  28 #elif ARCH_RISCV
  29 #include "libavutil/riscv/cpu.h"
  30 #endif
  31
  32 #if HAVE_UNISTD_H
  33 #include <unistd.h>
  34 #endif
  35 #if !HAVE_GETOPT
  36 #include "compat/getopt.c"
  37 #endif
  38
  39 static const struct {
  40     int flag;
  41     const char *name;
  42 } cpu_flag_tab[] = {
  43 #if   ARCH_AARCH64
  44     { AV_CPU_FLAG_ARMV8,     "armv8"      },
  45     { AV_CPU_FLAG_NEON,      "neon"       },
  46     { AV_CPU_FLAG_VFP,       "vfp"        },
  47     { AV_CPU_FLAG_DOTPROD,   "dotprod"    },
  48     { AV_CPU_FLAG_I8MM,      "i8mm"       },
  49     { AV_CPU_FLAG_SVE,       "sve"        },
  50     { AV_CPU_FLAG_SVE2,      "sve2"       },
  51 #elif ARCH_ARM
  52     { AV_CPU_FLAG_ARMV5TE,   "armv5te"    },
  53     { AV_CPU_FLAG_ARMV6,     "armv6"      },
  54     { AV_CPU_FLAG_ARMV6T2,   "armv6t2"    },
  55     { AV_CPU_FLAG_VFP,       "vfp"        },
  56     { AV_CPU_FLAG_VFP_VM,    "vfp_vm"     },
  57     { AV_CPU_FLAG_VFPV3,     "vfpv3"      },
  58     { AV_CPU_FLAG_NEON,      "neon"       },
  59     { AV_CPU_FLAG_SETEND,    "setend"     },
  60 #elif ARCH_PPC
  61     { AV_CPU_FLAG_ALTIVEC,   "altivec"    },
  62     { AV_CPU_FLAG_VSX,       "vsx"        },
  63     { AV_CPU_FLAG_POWER8,    "power8"     },
  64 #elif ARCH_MIPS
  65     { AV_CPU_FLAG_MMI,       "mmi"        },
  66     { AV_CPU_FLAG_MSA,       "msa"        },
  67 #elif ARCH_X86
  68     { AV_CPU_FLAG_MMX,       "mmx"        },
  69     { AV_CPU_FLAG_MMXEXT,    "mmxext"     },
  70     { AV_CPU_FLAG_SSE,       "sse"        },
  71     { AV_CPU_FLAG_SSE2,      "sse2"       },
  72     { AV_CPU_FLAG_SSE2SLOW,  "sse2slow"   },
  73     { AV_CPU_FLAG_SSE3,      "sse3"       },
  74     { AV_CPU_FLAG_SSE3SLOW,  "sse3slow"   },
  75     { AV_CPU_FLAG_SSSE3,     "ssse3"      },
  76     { AV_CPU_FLAG_ATOM,      "atom"       },
  77     { AV_CPU_FLAG_SSE4,      "sse4.1"     },
  78     { AV_CPU_FLAG_SSE42,     "sse4.2"     },
  79     { AV_CPU_FLAG_AVX,       "avx"        },
  80     { AV_CPU_FLAG_AVXSLOW,   "avxslow"    },
  81     { AV_CPU_FLAG_XOP,       "xop"        },
  82     { AV_CPU_FLAG_FMA3,      "fma3"       },
  83     { AV_CPU_FLAG_FMA4,      "fma4"       },
  84     { AV_CPU_FLAG_3DNOW,     "3dnow"      },
  85     { AV_CPU_FLAG_3DNOWEXT,  "3dnowext"   },
  86     { AV_CPU_FLAG_CMOV,      "cmov"       },
  87     { AV_CPU_FLAG_AVX2,      "avx2"       },
  88     { AV_CPU_FLAG_BMI1,      "bmi1"       },
  89     { AV_CPU_FLAG_BMI2,      "bmi2"       },
  90     { AV_CPU_FLAG_AESNI,     "aesni"      },
  91     { AV_CPU_FLAG_AVX512,    "avx512"     },
  92     { AV_CPU_FLAG_AVX512ICL, "avx512icl"  },
  93     { AV_CPU_FLAG_SLOW_GATHER, "slowgather" },
  94 #elif ARCH_LOONGARCH
  95     { AV_CPU_FLAG_LSX,       "lsx"        },
  96     { AV_CPU_FLAG_LASX,      "lasx"       },
  97 #elif ARCH_RISCV
  98     { AV_CPU_FLAG_RVI,       "rvi"        },
  99     { AV_CPU_FLAG_RVB_BASIC, "zbb"        },
 100     { AV_CPU_FLAG_RVB,       "rvb"        },
 101     { AV_CPU_FLAG_RVV_I32,   "zve32x"     },
 102     { AV_CPU_FLAG_RVV_F32,   "zve32f"     },
 103     { AV_CPU_FLAG_RVV_I64,   "zve64x"     },
 104     { AV_CPU_FLAG_RVV_F64,   "zve64d"     },
 105     { AV_CPU_FLAG_RV_ZVBB,   "zvbb"       },
 106     { AV_CPU_FLAG_RV_MISALIGNED, "misaligned" },
 107 #elif ARCH_WASM
 108     { AV_CPU_FLAG_SIMD128,   "simd128"    },
 109 #endif
 110     { 0 }
 111 };
 112
 113 static void print_cpu_flags(int cpu_flags, const char *type)
 114 {
 115     int i;
 116
 117     printf("cpu_flags(%s) = 0x%08X\n", type, cpu_flags);
 118     printf("cpu_flags_str(%s) =", type);
 119     for (i = 0; cpu_flag_tab[i].flag; i++)
 120         if (cpu_flags & cpu_flag_tab[i].flag)
 121             printf(" %s", cpu_flag_tab[i].name);
 122     printf("\n");
 123 }
 124
 125
 126 int main(int argc, char **argv)
 127 {
 128     int cpu_flags_raw = av_get_cpu_flags();
 129     int cpu_flags_eff;
 130     int cpu_count = av_cpu_count();
 131     const char *threads = "auto";
 132     int i;
 133
 134     for(i = 0; cpu_flag_tab[i].flag; i++) {
 135         unsigned tmp = 0;
 136         if (av_parse_cpu_caps(&tmp, cpu_flag_tab[i].name) < 0) {
 137             fprintf(stderr, "Table missing %s\n", cpu_flag_tab[i].name);
 138             return 4;
 139         }
 140     }
 141
 142     if (cpu_flags_raw < 0)
 143         return 1;
 144
 145     for (;;) {
 146         int c = getopt(argc, argv, "c:t:");
 147         if (c == -1)
 148             break;
 149         switch (c) {
 150         case 'c':
 151         {
 152             unsigned flags = av_get_cpu_flags();
 153             if (av_parse_cpu_caps(&flags, optarg) < 0)
 154                 return 2;
 155
 156             av_force_cpu_flags(flags);
 157             break;
 158         }
 159         case 't':
 160         {
 161             threads = optarg;
 162         }
 163         }
 164     }
 165
 166     cpu_flags_eff = av_get_cpu_flags();
 167
 168     if (cpu_flags_eff < 0)
 169         return 3;
 170
 171     print_cpu_flags(cpu_flags_raw, "raw");
 172     print_cpu_flags(cpu_flags_eff, "effective");
 173     printf("threads = %s (cpu_count = %d)\n", threads, cpu_count);
 174 #if ARCH_AARCH64 && HAVE_SVE
 175     if (cpu_flags_raw & AV_CPU_FLAG_SVE)
 176         printf("sve_vector_length = %d\n", 8 * ff_aarch64_sve_length());
 177 #elif ARCH_RISCV && HAVE_RVV
 178     if (cpu_flags_raw & AV_CPU_FLAG_RVV_I32) {
 179         size_t bytes = ff_get_rv_vlenb();
 180
 181         printf("rv_vlenb = %zu (%zu bits)\n", bytes, 8 * bytes);
 182     }
 183 #endif
 184
 185     return 0;
 186 }