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 HAVE_UNISTD_H
27 #include <unistd.h>
28 #endif
29 #if !HAVE_GETOPT
30 #include "compat/getopt.c"
31 #endif
32
33 static const struct {
34 int flag;
35 const char *name;
36 } cpu_flag_tab[] = {
37 #if ARCH_AARCH64
38 { AV_CPU_FLAG_ARMV8, "armv8" },
39 { AV_CPU_FLAG_NEON, "neon" },
40 { AV_CPU_FLAG_VFP, "vfp" },
41 #elif ARCH_ARM
42 { AV_CPU_FLAG_ARMV5TE, "armv5te" },
43 { AV_CPU_FLAG_ARMV6, "armv6" },
44 { AV_CPU_FLAG_ARMV6T2, "armv6t2" },
45 { AV_CPU_FLAG_VFP, "vfp" },
46 { AV_CPU_FLAG_VFP_VM, "vfp_vm" },
47 { AV_CPU_FLAG_VFPV3, "vfpv3" },
48 { AV_CPU_FLAG_NEON, "neon" },
49 { AV_CPU_FLAG_SETEND, "setend" },
50 #elif ARCH_PPC
51 { AV_CPU_FLAG_ALTIVEC, "altivec" },
52 #elif ARCH_X86
53 { AV_CPU_FLAG_MMX, "mmx" },
54 { AV_CPU_FLAG_MMXEXT, "mmxext" },
55 { AV_CPU_FLAG_SSE, "sse" },
56 { AV_CPU_FLAG_SSE2, "sse2" },
57 { AV_CPU_FLAG_SSE2SLOW, "sse2slow" },
58 { AV_CPU_FLAG_SSE3, "sse3" },
59 { AV_CPU_FLAG_SSE3SLOW, "sse3slow" },
60 { AV_CPU_FLAG_SSSE3, "ssse3" },
61 { AV_CPU_FLAG_ATOM, "atom" },
62 { AV_CPU_FLAG_SSE4, "sse4.1" },
63 { AV_CPU_FLAG_SSE42, "sse4.2" },
64 { AV_CPU_FLAG_AVX, "avx" },
65 { AV_CPU_FLAG_AVXSLOW, "avxslow" },
66 { AV_CPU_FLAG_XOP, "xop" },
67 { AV_CPU_FLAG_FMA3, "fma3" },
68 { AV_CPU_FLAG_FMA4, "fma4" },
69 { AV_CPU_FLAG_3DNOW, "3dnow" },
70 { AV_CPU_FLAG_3DNOWEXT, "3dnowext" },
71 { AV_CPU_FLAG_CMOV, "cmov" },
72 { AV_CPU_FLAG_AVX2, "avx2" },
73 { AV_CPU_FLAG_BMI1, "bmi1" },
74 { AV_CPU_FLAG_BMI2, "bmi2" },
75 { AV_CPU_FLAG_AESNI, "aesni" },
76 { AV_CPU_FLAG_AVX512, "avx512" },
77 #endif
78 { 0 }
79 };
80
print_cpu_flags(int cpu_flags,const char * type)81 static void print_cpu_flags(int cpu_flags, const char *type)
82 {
83 int i;
84
85 printf("cpu_flags(%s) = 0x%08X\n", type, cpu_flags);
86 printf("cpu_flags_str(%s) =", type);
87 for (i = 0; cpu_flag_tab[i].flag; i++)
88 if (cpu_flags & cpu_flag_tab[i].flag)
89 printf(" %s", cpu_flag_tab[i].name);
90 printf("\n");
91 }
92
93
main(int argc,char ** argv)94 int main(int argc, char **argv)
95 {
96 int cpu_flags_raw = av_get_cpu_flags();
97 int cpu_flags_eff;
98 int cpu_count = av_cpu_count();
99 char threads[5] = "auto";
100 int i;
101
102 for(i = 0; cpu_flag_tab[i].flag; i++) {
103 unsigned tmp = 0;
104 if (av_parse_cpu_caps(&tmp, cpu_flag_tab[i].name) < 0) {
105 fprintf(stderr, "Table missing %s\n", cpu_flag_tab[i].name);
106 return 4;
107 }
108 }
109
110 if (cpu_flags_raw < 0)
111 return 1;
112
113 for (;;) {
114 int c = getopt(argc, argv, "c:t:");
115 if (c == -1)
116 break;
117 switch (c) {
118 case 'c':
119 {
120 unsigned flags = av_get_cpu_flags();
121 if (av_parse_cpu_caps(&flags, optarg) < 0)
122 return 2;
123
124 av_force_cpu_flags(flags);
125 break;
126 }
127 case 't':
128 {
129 int len = av_strlcpy(threads, optarg, sizeof(threads));
130 if (len >= sizeof(threads)) {
131 fprintf(stderr, "Invalid thread count '%s'\n", optarg);
132 return 2;
133 }
134 }
135 }
136 }
137
138 cpu_flags_eff = av_get_cpu_flags();
139
140 if (cpu_flags_eff < 0)
141 return 3;
142
143 print_cpu_flags(cpu_flags_raw, "raw");
144 print_cpu_flags(cpu_flags_eff, "effective");
145 printf("threads = %s (cpu_count = %d)\n", threads, cpu_count);
146
147 return 0;
148 }
149