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cpu.c
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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,
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11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12  * Lesser General Public License for more details.
13  *
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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 <stdint.h>
20 
21 #include "cpu.h"
22 #include "cpu_internal.h"
23 #include "config.h"
24 #include "opt.h"
25 #include "common.h"
26 
27 #if HAVE_SCHED_GETAFFINITY
28 #ifndef _GNU_SOURCE
29 # define _GNU_SOURCE
30 #endif
31 #include <sched.h>
32 #endif
33 #if HAVE_GETPROCESSAFFINITYMASK
34 #include <windows.h>
35 #endif
36 #if HAVE_SYSCTL
37 #if HAVE_SYS_PARAM_H
38 #include <sys/param.h>
39 #endif
40 #include <sys/types.h>
41 #include <sys/sysctl.h>
42 #endif
43 #if HAVE_UNISTD_H
44 #include <unistd.h>
45 #endif
46 
47 static int flags, checked;
48 
50  if ( (arg & ( AV_CPU_FLAG_3DNOW |
66  && !(arg & AV_CPU_FLAG_MMX)) {
67  av_log(NULL, AV_LOG_WARNING, "MMX implied by specified flags\n");
68  arg |= AV_CPU_FLAG_MMX;
69  }
70 
71  flags = arg;
72  checked = arg != -1;
73 }
74 
76 {
77  if (checked)
78  return flags;
79 
80  if (ARCH_AARCH64)
82  if (ARCH_ARM)
84  if (ARCH_PPC)
86  if (ARCH_X86)
88 
89  checked = 1;
90  return flags;
91 }
92 
94 {
95  checked = 0;
97  checked = 1;
98 }
99 
100 int av_parse_cpu_flags(const char *s)
101 {
102 #define CPUFLAG_MMXEXT (AV_CPU_FLAG_MMX | AV_CPU_FLAG_MMXEXT | AV_CPU_FLAG_CMOV)
103 #define CPUFLAG_3DNOW (AV_CPU_FLAG_3DNOW | AV_CPU_FLAG_MMX)
104 #define CPUFLAG_3DNOWEXT (AV_CPU_FLAG_3DNOWEXT | CPUFLAG_3DNOW)
105 #define CPUFLAG_SSE (AV_CPU_FLAG_SSE | CPUFLAG_MMXEXT)
106 #define CPUFLAG_SSE2 (AV_CPU_FLAG_SSE2 | CPUFLAG_SSE)
107 #define CPUFLAG_SSE2SLOW (AV_CPU_FLAG_SSE2SLOW | CPUFLAG_SSE2)
108 #define CPUFLAG_SSE3 (AV_CPU_FLAG_SSE3 | CPUFLAG_SSE2)
109 #define CPUFLAG_SSE3SLOW (AV_CPU_FLAG_SSE3SLOW | CPUFLAG_SSE3)
110 #define CPUFLAG_SSSE3 (AV_CPU_FLAG_SSSE3 | CPUFLAG_SSE3)
111 #define CPUFLAG_SSE4 (AV_CPU_FLAG_SSE4 | CPUFLAG_SSSE3)
112 #define CPUFLAG_SSE42 (AV_CPU_FLAG_SSE42 | CPUFLAG_SSE4)
113 #define CPUFLAG_AVX (AV_CPU_FLAG_AVX | CPUFLAG_SSE42)
114 #define CPUFLAG_XOP (AV_CPU_FLAG_XOP | CPUFLAG_AVX)
115 #define CPUFLAG_FMA3 (AV_CPU_FLAG_FMA3 | CPUFLAG_AVX)
116 #define CPUFLAG_FMA4 (AV_CPU_FLAG_FMA4 | CPUFLAG_AVX)
117 #define CPUFLAG_AVX2 (AV_CPU_FLAG_AVX2 | CPUFLAG_AVX)
118 #define CPUFLAG_BMI1 (AV_CPU_FLAG_BMI1)
119 #define CPUFLAG_BMI2 (AV_CPU_FLAG_BMI2 | CPUFLAG_BMI1)
120  static const AVOption cpuflags_opts[] = {
121  { "flags" , NULL, 0, AV_OPT_TYPE_FLAGS, { .i64 = 0 }, INT64_MIN, INT64_MAX, .unit = "flags" },
122 #if ARCH_PPC
123  { "altivec" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_ALTIVEC }, .unit = "flags" },
124 #elif ARCH_X86
125  { "mmx" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_MMX }, .unit = "flags" },
126  { "mmxext" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_MMXEXT }, .unit = "flags" },
127  { "sse" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_SSE }, .unit = "flags" },
128  { "sse2" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_SSE2 }, .unit = "flags" },
129  { "sse2slow", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_SSE2SLOW }, .unit = "flags" },
130  { "sse3" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_SSE3 }, .unit = "flags" },
131  { "sse3slow", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_SSE3SLOW }, .unit = "flags" },
132  { "ssse3" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_SSSE3 }, .unit = "flags" },
133  { "atom" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_ATOM }, .unit = "flags" },
134  { "sse4.1" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_SSE4 }, .unit = "flags" },
135  { "sse4.2" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_SSE42 }, .unit = "flags" },
136  { "avx" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_AVX }, .unit = "flags" },
137  { "xop" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_XOP }, .unit = "flags" },
138  { "fma3" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_FMA3 }, .unit = "flags" },
139  { "fma4" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_FMA4 }, .unit = "flags" },
140  { "avx2" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_AVX2 }, .unit = "flags" },
141  { "bmi1" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_BMI1 }, .unit = "flags" },
142  { "bmi2" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_BMI2 }, .unit = "flags" },
143  { "3dnow" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_3DNOW }, .unit = "flags" },
144  { "3dnowext", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_3DNOWEXT }, .unit = "flags" },
145  { "cmov", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_CMOV }, .unit = "flags" },
146 #elif ARCH_ARM
147  { "armv5te", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_ARMV5TE }, .unit = "flags" },
148  { "armv6", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_ARMV6 }, .unit = "flags" },
149  { "armv6t2", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_ARMV6T2 }, .unit = "flags" },
150  { "vfp", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_VFP }, .unit = "flags" },
151  { "vfpv3", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_VFPV3 }, .unit = "flags" },
152  { "neon", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_NEON }, .unit = "flags" },
153 #elif ARCH_AARCH64
154  { "armv8", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_ARMV8 }, .unit = "flags" },
155  { "neon", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_NEON }, .unit = "flags" },
156  { "vfp", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_VFP }, .unit = "flags" },
157 #endif
158  { NULL },
159  };
160  static const AVClass class = {
161  .class_name = "cpuflags",
162  .item_name = av_default_item_name,
163  .option = cpuflags_opts,
164  .version = LIBAVUTIL_VERSION_INT,
165  };
166 
167  int flags = 0, ret;
168  const AVClass *pclass = &class;
169 
170  if ((ret = av_opt_eval_flags(&pclass, &cpuflags_opts[0], s, &flags)) < 0)
171  return ret;
172 
173  return flags & INT_MAX;
174 }
175 
176 int av_parse_cpu_caps(unsigned *flags, const char *s)
177 {
178  static const AVOption cpuflags_opts[] = {
179  { "flags" , NULL, 0, AV_OPT_TYPE_FLAGS, { .i64 = 0 }, INT64_MIN, INT64_MAX, .unit = "flags" },
180 #if ARCH_PPC
181  { "altivec" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_ALTIVEC }, .unit = "flags" },
182 #elif ARCH_X86
183  { "mmx" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_MMX }, .unit = "flags" },
184  { "mmx2" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_MMX2 }, .unit = "flags" },
185  { "mmxext" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_MMX2 }, .unit = "flags" },
186  { "sse" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_SSE }, .unit = "flags" },
187  { "sse2" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_SSE2 }, .unit = "flags" },
188  { "sse2slow", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_SSE2SLOW }, .unit = "flags" },
189  { "sse3" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_SSE3 }, .unit = "flags" },
190  { "sse3slow", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_SSE3SLOW }, .unit = "flags" },
191  { "ssse3" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_SSSE3 }, .unit = "flags" },
192  { "atom" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_ATOM }, .unit = "flags" },
193  { "sse4.1" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_SSE4 }, .unit = "flags" },
194  { "sse4.2" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_SSE42 }, .unit = "flags" },
195  { "avx" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_AVX }, .unit = "flags" },
196  { "xop" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_XOP }, .unit = "flags" },
197  { "fma3" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_FMA3 }, .unit = "flags" },
198  { "fma4" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_FMA4 }, .unit = "flags" },
199  { "avx2" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_AVX2 }, .unit = "flags" },
200  { "bmi1" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_BMI1 }, .unit = "flags" },
201  { "bmi2" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_BMI2 }, .unit = "flags" },
202  { "3dnow" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_3DNOW }, .unit = "flags" },
203  { "3dnowext", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_3DNOWEXT }, .unit = "flags" },
204  { "cmov", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_CMOV }, .unit = "flags" },
205 
206 #define CPU_FLAG_P2 AV_CPU_FLAG_CMOV | AV_CPU_FLAG_MMX
207 #define CPU_FLAG_P3 CPU_FLAG_P2 | AV_CPU_FLAG_MMX2 | AV_CPU_FLAG_SSE
208 #define CPU_FLAG_P4 CPU_FLAG_P3| AV_CPU_FLAG_SSE2
209  { "pentium2", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPU_FLAG_P2 }, .unit = "flags" },
210  { "pentium3", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPU_FLAG_P3 }, .unit = "flags" },
211  { "pentium4", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPU_FLAG_P4 }, .unit = "flags" },
212 
213 #define CPU_FLAG_K62 AV_CPU_FLAG_MMX | AV_CPU_FLAG_3DNOW
214 #define CPU_FLAG_ATHLON CPU_FLAG_K62 | AV_CPU_FLAG_CMOV | AV_CPU_FLAG_3DNOWEXT | AV_CPU_FLAG_MMX2
215 #define CPU_FLAG_ATHLONXP CPU_FLAG_ATHLON | AV_CPU_FLAG_SSE
216 #define CPU_FLAG_K8 CPU_FLAG_ATHLONXP | AV_CPU_FLAG_SSE2
217  { "k6", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_MMX }, .unit = "flags" },
218  { "k62", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPU_FLAG_K62 }, .unit = "flags" },
219  { "athlon", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPU_FLAG_ATHLON }, .unit = "flags" },
220  { "athlonxp", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPU_FLAG_ATHLONXP }, .unit = "flags" },
221  { "k8", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPU_FLAG_K8 }, .unit = "flags" },
222 #elif ARCH_ARM
223  { "armv5te", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_ARMV5TE }, .unit = "flags" },
224  { "armv6", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_ARMV6 }, .unit = "flags" },
225  { "armv6t2", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_ARMV6T2 }, .unit = "flags" },
226  { "vfp", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_VFP }, .unit = "flags" },
227  { "vfpv3", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_VFPV3 }, .unit = "flags" },
228  { "neon", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_NEON }, .unit = "flags" },
229  { "setend", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_SETEND }, .unit = "flags" },
230 #elif ARCH_AARCH64
231  { "armv8", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_ARMV8 }, .unit = "flags" },
232  { "neon", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_NEON }, .unit = "flags" },
233  { "vfp", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_VFP }, .unit = "flags" },
234 #endif
235  { NULL },
236  };
237  static const AVClass class = {
238  .class_name = "cpuflags",
239  .item_name = av_default_item_name,
240  .option = cpuflags_opts,
241  .version = LIBAVUTIL_VERSION_INT,
242  };
243  const AVClass *pclass = &class;
244 
245  return av_opt_eval_flags(&pclass, &cpuflags_opts[0], s, flags);
246 }
247 
248 int av_cpu_count(void)
249 {
250  static volatile int printed;
251 
252  int nb_cpus = 1;
253 #if HAVE_SCHED_GETAFFINITY && defined(CPU_COUNT)
254  cpu_set_t cpuset;
255 
256  CPU_ZERO(&cpuset);
257 
258  if (!sched_getaffinity(0, sizeof(cpuset), &cpuset))
259  nb_cpus = CPU_COUNT(&cpuset);
260 #elif HAVE_GETPROCESSAFFINITYMASK
261  DWORD_PTR proc_aff, sys_aff;
262  if (GetProcessAffinityMask(GetCurrentProcess(), &proc_aff, &sys_aff))
263  nb_cpus = av_popcount64(proc_aff);
264 #elif HAVE_SYSCTL && defined(HW_NCPU)
265  int mib[2] = { CTL_HW, HW_NCPU };
266  size_t len = sizeof(nb_cpus);
267 
268  if (sysctl(mib, 2, &nb_cpus, &len, NULL, 0) == -1)
269  nb_cpus = 0;
270 #elif HAVE_SYSCONF && defined(_SC_NPROC_ONLN)
271  nb_cpus = sysconf(_SC_NPROC_ONLN);
272 #elif HAVE_SYSCONF && defined(_SC_NPROCESSORS_ONLN)
273  nb_cpus = sysconf(_SC_NPROCESSORS_ONLN);
274 #endif
275 
276  if (!printed) {
277  av_log(NULL, AV_LOG_DEBUG, "detected %d logical cores\n", nb_cpus);
278  printed = 1;
279  }
280 
281  return nb_cpus;
282 }
283 
284 #ifdef TEST
285 
286 #include <stdio.h>
287 #include "avstring.h"
288 
289 #if !HAVE_GETOPT
290 #include "compat/getopt.c"
291 #endif
292 
293 static const struct {
294  int flag;
295  const char *name;
296 } cpu_flag_tab[] = {
297 #if ARCH_AARCH64
298  { AV_CPU_FLAG_ARMV8, "armv8" },
299  { AV_CPU_FLAG_NEON, "neon" },
300  { AV_CPU_FLAG_VFP, "vfp" },
301 #elif ARCH_ARM
302  { AV_CPU_FLAG_ARMV5TE, "armv5te" },
303  { AV_CPU_FLAG_ARMV6, "armv6" },
304  { AV_CPU_FLAG_ARMV6T2, "armv6t2" },
305  { AV_CPU_FLAG_VFP, "vfp" },
306  { AV_CPU_FLAG_VFPV3, "vfpv3" },
307  { AV_CPU_FLAG_NEON, "neon" },
308  { AV_CPU_FLAG_SETEND, "setend" },
309 #elif ARCH_PPC
310  { AV_CPU_FLAG_ALTIVEC, "altivec" },
311 #elif ARCH_X86
312  { AV_CPU_FLAG_MMX, "mmx" },
313  { AV_CPU_FLAG_MMXEXT, "mmxext" },
314  { AV_CPU_FLAG_SSE, "sse" },
315  { AV_CPU_FLAG_SSE2, "sse2" },
316  { AV_CPU_FLAG_SSE2SLOW, "sse2slow" },
317  { AV_CPU_FLAG_SSE3, "sse3" },
318  { AV_CPU_FLAG_SSE3SLOW, "sse3slow" },
319  { AV_CPU_FLAG_SSSE3, "ssse3" },
320  { AV_CPU_FLAG_ATOM, "atom" },
321  { AV_CPU_FLAG_SSE4, "sse4.1" },
322  { AV_CPU_FLAG_SSE42, "sse4.2" },
323  { AV_CPU_FLAG_AVX, "avx" },
324  { AV_CPU_FLAG_XOP, "xop" },
325  { AV_CPU_FLAG_FMA3, "fma3" },
326  { AV_CPU_FLAG_FMA4, "fma4" },
327  { AV_CPU_FLAG_3DNOW, "3dnow" },
328  { AV_CPU_FLAG_3DNOWEXT, "3dnowext" },
329  { AV_CPU_FLAG_CMOV, "cmov" },
330  { AV_CPU_FLAG_AVX2, "avx2" },
331  { AV_CPU_FLAG_BMI1, "bmi1" },
332  { AV_CPU_FLAG_BMI2, "bmi2" },
333 #endif
334  { 0 }
335 };
336 
337 static void print_cpu_flags(int cpu_flags, const char *type)
338 {
339  int i;
340 
341  printf("cpu_flags(%s) = 0x%08X\n", type, cpu_flags);
342  printf("cpu_flags_str(%s) =", type);
343  for (i = 0; cpu_flag_tab[i].flag; i++)
344  if (cpu_flags & cpu_flag_tab[i].flag)
345  printf(" %s", cpu_flag_tab[i].name);
346  printf("\n");
347 }
348 
349 
350 int main(int argc, char **argv)
351 {
352  int cpu_flags_raw = av_get_cpu_flags();
353  int cpu_flags_eff;
354  int cpu_count = av_cpu_count();
355  char threads[5] = "auto";
356  int i;
357 
358  for(i = 0; cpu_flag_tab[i].flag; i++) {
359  unsigned tmp = 0;
360  if (av_parse_cpu_caps(&tmp, cpu_flag_tab[i].name) < 0) {
361  fprintf(stderr, "Table missing %s\n", cpu_flag_tab[i].name);
362  return 4;
363  }
364  }
365 
366  if (cpu_flags_raw < 0)
367  return 1;
368 
369  for (;;) {
370  int c = getopt(argc, argv, "c:t:");
371  if (c == -1)
372  break;
373  switch (c) {
374  case 'c':
375  {
376  unsigned flags = av_get_cpu_flags();
377  if (av_parse_cpu_caps(&flags, optarg) < 0)
378  return 2;
379 
380  av_force_cpu_flags(flags);
381  break;
382  }
383  case 't':
384  {
385  int len = av_strlcpy(threads, optarg, sizeof(threads));
386  if (len >= sizeof(threads)) {
387  fprintf(stderr, "Invalid thread count '%s'\n", optarg);
388  return 2;
389  }
390  }
391  }
392  }
393 
394  cpu_flags_eff = av_get_cpu_flags();
395 
396  if (cpu_flags_eff < 0)
397  return 3;
398 
399  print_cpu_flags(cpu_flags_raw, "raw");
400  print_cpu_flags(cpu_flags_eff, "effective");
401  printf("threads = %s (cpu_count = %d)\n", threads, cpu_count);
402 
403  return 0;
404 }
405 
406 #endif
#define CPUFLAG_3DNOW
#define AV_CPU_FLAG_AVX
AVX functions: requires OS support even if YMM registers aren't used.
Definition: cpu.h:45
#define NULL
Definition: coverity.c:32
#define AV_CPU_FLAG_ALTIVEC
standard
Definition: cpu.h:58
const char * s
Definition: avisynth_c.h:669
AVOption.
Definition: opt.h:255
int av_cpu_count(void)
Definition: cpu.c:248
#define ARCH_PPC
Definition: config.h:29
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:181
#define LIBAVUTIL_VERSION_INT
Definition: version.h:62
#define AV_CPU_FLAG_SSE
SSE functions.
Definition: cpu.h:33
#define CPUFLAG_SSE3
void av_set_cpu_flags_mask(int mask)
Set a mask on flags returned by av_get_cpu_flags().
Definition: cpu.c:93
#define AV_CPU_FLAG_MMX2
SSE integer functions or AMD MMX ext.
Definition: cpu.h:31
#define CPUFLAG_SSE4
#define AV_CPU_FLAG_CMOV
supports cmov instruction
Definition: cpu.h:49
#define AV_CPU_FLAG_VFP
Definition: cpu.h:63
const char * class_name
The name of the class; usually it is the same name as the context structure type to which the AVClass...
Definition: log.h:71
static int checked
Definition: cpu.c:47
AVOptions.
#define CPUFLAG_SSE3SLOW
#define AV_CPU_FLAG_FMA3
Haswell FMA3 functions.
Definition: cpu.h:54
#define AV_CPU_FLAG_NEON
Definition: cpu.h:65
#define AV_CPU_FLAG_MMXEXT
SSE integer functions or AMD MMX ext.
Definition: cpu.h:30
int ff_get_cpu_flags_ppc(void)
This function MAY rely on signal() or fork() in order to make sure AltiVec is present.
Definition: cpu.c:39
int av_parse_cpu_flags(const char *s)
Parse CPU flags from a string.
Definition: cpu.c:100
#define AV_CPU_FLAG_ATOM
Atom processor, some SSSE3 instructions are slower.
Definition: cpu.h:42
#define AV_CPU_FLAG_AVX2
AVX2 functions: requires OS support even if YMM registers aren't used.
Definition: cpu.h:53
#define AV_CPU_FLAG_SSE2SLOW
SSE2 supported, but usually not faster.
Definition: cpu.h:35
#define AV_CPU_FLAG_XOP
Bulldozer XOP functions.
Definition: cpu.h:46
#define av_log(a,...)
#define AV_CPU_FLAG_SSE42
Nehalem SSE4.2 functions.
Definition: cpu.h:44
#define AV_CPU_FLAG_SSSE3
Conroe SSSE3 functions.
Definition: cpu.h:41
static const uint16_t mask[17]
Definition: lzw.c:38
#define ARCH_X86
Definition: config.h:38
av_default_item_name
int av_opt_eval_flags(void *obj, const AVOption *o, const char *val, int *flags_out)
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:196
const char * arg
Definition: jacosubdec.c:66
#define AV_CPU_FLAG_ARMV6T2
Definition: cpu.h:62
#define CPUFLAG_SSE
size_t av_strlcpy(char *dst, const char *src, size_t size)
Copy the string src to dst, but no more than size - 1 bytes, and null-terminate dst.
Definition: avstring.c:83
int av_parse_cpu_caps(unsigned *flags, const char *s)
Parse CPU caps from a string and update the given AV_CPU_* flags based on that.
Definition: cpu.c:176
#define AV_CPU_FLAG_ARMV5TE
Definition: cpu.h:60
#define CPUFLAG_SSE2
#define ARCH_ARM
Definition: config.h:19
#define AV_CPU_FLAG_SSE3
Prescott SSE3 functions.
Definition: cpu.h:38
ret
Definition: avfilter.c:974
int ff_get_cpu_flags_x86(void)
Definition: cpu.c:90
#define AV_CPU_FLAG_BMI2
Bit Manipulation Instruction Set 2.
Definition: cpu.h:56
#define AV_CPU_FLAG_VFPV3
Definition: cpu.h:64
#define CPUFLAG_BMI2
#define AV_CPU_FLAG_3DNOW
AMD 3DNOW.
Definition: cpu.h:32
#define AV_CPU_FLAG_ARMV6
Definition: cpu.h:61
int ff_get_cpu_flags_aarch64(void)
Definition: cpu.c:23
#define AV_CPU_FLAG_SSE3SLOW
SSE3 supported, but usually not faster.
Definition: cpu.h:39
#define CPUFLAG_FMA4
#define AV_CPU_FLAG_BMI1
Bit Manipulation Instruction Set 1.
Definition: cpu.h:55
#define AV_CPU_FLAG_MMX
standard MMX
Definition: cpu.h:29
#define CPUFLAG_FMA3
static int getopt(int argc, char *argv[], char *opts)
Definition: getopt.c:41
GLint GLenum type
Definition: opengl_enc.c:105
Describe the class of an AVClass context structure.
Definition: log.h:66
#define AV_CPU_FLAG_FMA4
Bulldozer FMA4 functions.
Definition: cpu.h:47
#define AV_CPU_FLAG_SSE4
Penryn SSE4.1 functions.
Definition: cpu.h:43
int av_get_cpu_flags(void)
Return the flags which specify extensions supported by the CPU.
Definition: cpu.c:75
#define CPUFLAG_SSE2SLOW
#define CPUFLAG_XOP
static int flags
Definition: cpu.c:47
#define AV_CPU_FLAG_3DNOWEXT
AMD 3DNowExt.
Definition: cpu.h:37
#define CPUFLAG_BMI1
common internal and external API header
static double c[64]
#define AV_CPU_FLAG_ARMV8
Definition: cpu.h:66
static char * optarg
Definition: getopt.c:39
#define CPUFLAG_AVX2
int len
DWORD * DWORD_PTR
int ff_get_cpu_flags_arm(void)
Definition: cpu.c:145
#define AV_CPU_FLAG_SETEND
Definition: cpu.h:67
#define ARCH_AARCH64
Definition: config.h:17
#define AV_CPU_FLAG_SSE2
PIV SSE2 functions.
Definition: cpu.h:34
#define CPUFLAG_3DNOWEXT
void av_force_cpu_flags(int arg)
Disables cpu detection and forces the specified flags.
Definition: cpu.c:49
int main(int argc, char **argv)
Definition: main.c:22
#define CPUFLAG_MMXEXT
#define CPUFLAG_AVX
#define CPUFLAG_SSE42
#define CPUFLAG_SSSE3
const char * name
Definition: opengl_enc.c:103