FFmpeg: libavutil/cpu.c Source File

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libavutil

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,

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 */

19 #include <stdint.h>

21 #include "cpu.h"

22 #include "cpu_internal.h"

23 #include "config.h"

24 #include "opt.h"

25 #include "common.h"

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

47 static int flags, checked;

49 void av_force_cpu_flags(int arg){

50 if ( (arg & ( AV_CPU_FLAG_3DNOW |

51 AV_CPU_FLAG_3DNOWEXT |

52 AV_CPU_FLAG_SSE |

53 AV_CPU_FLAG_SSE2 |

54 AV_CPU_FLAG_SSE2SLOW |

55 AV_CPU_FLAG_SSE3 |

56 AV_CPU_FLAG_SSE3SLOW |

57 AV_CPU_FLAG_SSSE3 |

58 AV_CPU_FLAG_SSE4 |

59 AV_CPU_FLAG_SSE42 |

60 AV_CPU_FLAG_AVX |

61 AV_CPU_FLAG_XOP |

62 AV_CPU_FLAG_FMA3 |

63 AV_CPU_FLAG_FMA4 |

64 AV_CPU_FLAG_AVX2 ))

65 && !(arg & AV_CPU_FLAG_MMX)) {

66 av_log(NULL, AV_LOG_WARNING, "MMX implied by specified flags\n");

67 arg |= AV_CPU_FLAG_MMX;

68 }

70 flags = arg;

71 checked = arg != -1;

72 }

74 int av_get_cpu_flags(void)

75 {

76 if (checked)

77 return flags;

79 if (ARCH_AARCH64)

80 flags = ff_get_cpu_flags_aarch64();

81 if (ARCH_ARM)

82 flags = ff_get_cpu_flags_arm();

83 if (ARCH_PPC)

84 flags = ff_get_cpu_flags_ppc();

85 if (ARCH_X86)

86 flags = ff_get_cpu_flags_x86();

88 checked = 1;

89 return flags;

90 }

92 void av_set_cpu_flags_mask(int mask)

93 {

94 checked = 0;

95 flags = av_get_cpu_flags() & mask;

96 checked = 1;

97 }

99 int av_parse_cpu_flags(const char *s)

100 {

101 #define CPUFLAG_MMXEXT (AV_CPU_FLAG_MMX | AV_CPU_FLAG_MMXEXT | AV_CPU_FLAG_CMOV)

102 #define CPUFLAG_3DNOW (AV_CPU_FLAG_3DNOW | AV_CPU_FLAG_MMX)

103 #define CPUFLAG_3DNOWEXT (AV_CPU_FLAG_3DNOWEXT | CPUFLAG_3DNOW)

104 #define CPUFLAG_SSE (AV_CPU_FLAG_SSE | CPUFLAG_MMXEXT)

105 #define CPUFLAG_SSE2 (AV_CPU_FLAG_SSE2 | CPUFLAG_SSE)

106 #define CPUFLAG_SSE2SLOW (AV_CPU_FLAG_SSE2SLOW | CPUFLAG_SSE2)

107 #define CPUFLAG_SSE3 (AV_CPU_FLAG_SSE3 | CPUFLAG_SSE2)

108 #define CPUFLAG_SSE3SLOW (AV_CPU_FLAG_SSE3SLOW | CPUFLAG_SSE3)

109 #define CPUFLAG_SSSE3 (AV_CPU_FLAG_SSSE3 | CPUFLAG_SSE3)

110 #define CPUFLAG_SSE4 (AV_CPU_FLAG_SSE4 | CPUFLAG_SSSE3)

111 #define CPUFLAG_SSE42 (AV_CPU_FLAG_SSE42 | CPUFLAG_SSE4)

112 #define CPUFLAG_AVX (AV_CPU_FLAG_AVX | CPUFLAG_SSE42)

113 #define CPUFLAG_XOP (AV_CPU_FLAG_XOP | CPUFLAG_AVX)

114 #define CPUFLAG_FMA3 (AV_CPU_FLAG_FMA3 | CPUFLAG_AVX)

115 #define CPUFLAG_FMA4 (AV_CPU_FLAG_FMA4 | CPUFLAG_AVX)

116 #define CPUFLAG_AVX2 (AV_CPU_FLAG_AVX2 | CPUFLAG_AVX)

117 #define CPUFLAG_BMI1 (AV_CPU_FLAG_BMI1)

118 #define CPUFLAG_BMI2 (AV_CPU_FLAG_BMI2 | CPUFLAG_BMI1)

119 static const AVOption cpuflags_opts[] = {

120 { "flags" , NULL, 0, AV_OPT_TYPE_FLAGS, { .i64 = 0 }, INT64_MIN, INT64_MAX, .unit = "flags" },

121 #if ARCH_PPC

122 { "altivec" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_ALTIVEC }, .unit = "flags" },

123 #elif ARCH_X86

124 { "mmx" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_MMX }, .unit = "flags" },

125 { "mmxext" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_MMXEXT }, .unit = "flags" },

126 { "sse" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_SSE }, .unit = "flags" },

127 { "sse2" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_SSE2 }, .unit = "flags" },

128 { "sse2slow", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_SSE2SLOW }, .unit = "flags" },

129 { "sse3" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_SSE3 }, .unit = "flags" },

130 { "sse3slow", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_SSE3SLOW }, .unit = "flags" },

131 { "ssse3" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_SSSE3 }, .unit = "flags" },

132 { "atom" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_ATOM }, .unit = "flags" },

133 { "sse4.1" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_SSE4 }, .unit = "flags" },

134 { "sse4.2" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_SSE42 }, .unit = "flags" },

135 { "avx" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_AVX }, .unit = "flags" },

136 { "xop" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_XOP }, .unit = "flags" },

137 { "fma3" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_FMA3 }, .unit = "flags" },

138 { "fma4" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_FMA4 }, .unit = "flags" },

139 { "avx2" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_AVX2 }, .unit = "flags" },

140 { "bmi1" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_BMI1 }, .unit = "flags" },

141 { "bmi2" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_BMI2 }, .unit = "flags" },

142 { "3dnow" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_3DNOW }, .unit = "flags" },

143 { "3dnowext", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_3DNOWEXT }, .unit = "flags" },

144 { "cmov", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_CMOV }, .unit = "flags" },

145 #elif ARCH_ARM

146 { "armv5te", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_ARMV5TE }, .unit = "flags" },

147 { "armv6", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_ARMV6 }, .unit = "flags" },

148 { "armv6t2", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_ARMV6T2 }, .unit = "flags" },

149 { "vfp", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_VFP }, .unit = "flags" },

150 { "vfpv3", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_VFPV3 }, .unit = "flags" },

151 { "neon", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_NEON }, .unit = "flags" },

152 #elif ARCH_AARCH64

153 { "armv8", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_ARMV8 }, .unit = "flags" },

154 { "neon", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_NEON }, .unit = "flags" },

155 { "vfp", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_VFP }, .unit = "flags" },

156 #endif

157 { NULL },

158 };

159 static const AVClass class = {

160 .class_name = "cpuflags",

161 .item_name = av_default_item_name,

162 .option = cpuflags_opts,

163 .version = LIBAVUTIL_VERSION_INT,

164 };

165

166 int flags = 0, ret;

167 const AVClass *pclass = &class;

168

169 if ((ret = av_opt_eval_flags(&pclass, &cpuflags_opts[0], s, &flags)) < 0)

170 return ret;

171

172 return flags & INT_MAX;

173 }

174

175 int av_parse_cpu_caps(unsigned *flags, const char *s)

176 {

177 static const AVOption cpuflags_opts[] = {

178 { "flags" , NULL, 0, AV_OPT_TYPE_FLAGS, { .i64 = 0 }, INT64_MIN, INT64_MAX, .unit = "flags" },

179 #if ARCH_PPC

180 { "altivec" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_ALTIVEC }, .unit = "flags" },

181 #elif ARCH_X86

182 { "mmx" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_MMX }, .unit = "flags" },

183 { "mmx2" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_MMX2 }, .unit = "flags" },

184 { "mmxext" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_MMX2 }, .unit = "flags" },

185 { "sse" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_SSE }, .unit = "flags" },

186 { "sse2" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_SSE2 }, .unit = "flags" },

187 { "sse2slow", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_SSE2SLOW }, .unit = "flags" },

188 { "sse3" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_SSE3 }, .unit = "flags" },

189 { "sse3slow", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_SSE3SLOW }, .unit = "flags" },

190 { "ssse3" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_SSSE3 }, .unit = "flags" },

191 { "atom" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_ATOM }, .unit = "flags" },

192 { "sse4.1" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_SSE4 }, .unit = "flags" },

193 { "sse4.2" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_SSE42 }, .unit = "flags" },

194 { "avx" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_AVX }, .unit = "flags" },

195 { "xop" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_XOP }, .unit = "flags" },

196 { "fma3" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_FMA3 }, .unit = "flags" },

197 { "fma4" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_FMA4 }, .unit = "flags" },

198 { "avx2" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_AVX2 }, .unit = "flags" },

199 { "bmi1" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_BMI1 }, .unit = "flags" },

200 { "bmi2" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_BMI2 }, .unit = "flags" },

201 { "3dnow" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_3DNOW }, .unit = "flags" },

202 { "3dnowext", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_3DNOWEXT }, .unit = "flags" },

203 { "cmov", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_CMOV }, .unit = "flags" },

204

205 #define CPU_FLAG_P2 AV_CPU_FLAG_CMOV | AV_CPU_FLAG_MMX

206 #define CPU_FLAG_P3 CPU_FLAG_P2 | AV_CPU_FLAG_MMX2 | AV_CPU_FLAG_SSE

207 #define CPU_FLAG_P4 CPU_FLAG_P3| AV_CPU_FLAG_SSE2

208 { "pentium2", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPU_FLAG_P2 }, .unit = "flags" },

209 { "pentium3", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPU_FLAG_P3 }, .unit = "flags" },

210 { "pentium4", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPU_FLAG_P4 }, .unit = "flags" },

211

212 #define CPU_FLAG_K62 AV_CPU_FLAG_MMX | AV_CPU_FLAG_3DNOW

213 #define CPU_FLAG_ATHLON CPU_FLAG_K62 | AV_CPU_FLAG_CMOV | AV_CPU_FLAG_3DNOWEXT | AV_CPU_FLAG_MMX2

214 #define CPU_FLAG_ATHLONXP CPU_FLAG_ATHLON | AV_CPU_FLAG_SSE

215 #define CPU_FLAG_K8 CPU_FLAG_ATHLONXP | AV_CPU_FLAG_SSE2

216 { "k6", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_MMX }, .unit = "flags" },

217 { "k62", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPU_FLAG_K62 }, .unit = "flags" },

218 { "athlon", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPU_FLAG_ATHLON }, .unit = "flags" },

219 { "athlonxp", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPU_FLAG_ATHLONXP }, .unit = "flags" },

220 { "k8", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPU_FLAG_K8 }, .unit = "flags" },

221 #elif ARCH_ARM

222 { "armv5te", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_ARMV5TE }, .unit = "flags" },

223 { "armv6", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_ARMV6 }, .unit = "flags" },

224 { "armv6t2", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_ARMV6T2 }, .unit = "flags" },

225 { "vfp", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_VFP }, .unit = "flags" },

226 { "vfpv3", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_VFPV3 }, .unit = "flags" },

227 { "neon", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_NEON }, .unit = "flags" },

228 { "setend", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_SETEND }, .unit = "flags" },

229 #elif ARCH_AARCH64

230 { "armv8", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_ARMV8 }, .unit = "flags" },

231 { "neon", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_NEON }, .unit = "flags" },

232 { "vfp", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_VFP }, .unit = "flags" },

233 #endif

234 { NULL },

235 };

236 static const AVClass class = {

237 .class_name = "cpuflags",

238 .item_name = av_default_item_name,

239 .option = cpuflags_opts,

240 .version = LIBAVUTIL_VERSION_INT,

241 };

242 const AVClass *pclass = &class;

243

244 return av_opt_eval_flags(&pclass, &cpuflags_opts[0], s, flags);

245 }

246

247 int av_cpu_count(void)

248 {

249 static volatile int printed;

250

251 int nb_cpus = 1;

252 #if HAVE_SCHED_GETAFFINITY && defined(CPU_COUNT)

253 cpu_set_t cpuset;

254

255 CPU_ZERO(&cpuset);

256

257 if (!sched_getaffinity(0, sizeof(cpuset), &cpuset))

258 nb_cpus = CPU_COUNT(&cpuset);

259 #elif HAVE_GETPROCESSAFFINITYMASK

260 DWORD_PTR proc_aff, sys_aff;

261 if (GetProcessAffinityMask(GetCurrentProcess(), &proc_aff, &sys_aff))

262 nb_cpus = av_popcount64(proc_aff);

263 #elif HAVE_SYSCTL && defined(HW_NCPU)

264 int mib[2] = { CTL_HW, HW_NCPU };

265 size_t len = sizeof(nb_cpus);

266

267 if (sysctl(mib, 2, &nb_cpus, &len, NULL, 0) == -1)

268 nb_cpus = 0;

269 #elif HAVE_SYSCONF && defined(_SC_NPROC_ONLN)

270 nb_cpus = sysconf(_SC_NPROC_ONLN);

271 #elif HAVE_SYSCONF && defined(_SC_NPROCESSORS_ONLN)

272 nb_cpus = sysconf(_SC_NPROCESSORS_ONLN);

273 #endif

274

275 if (!printed) {

276 av_log(NULL, AV_LOG_DEBUG, "detected %d logical cores\n", nb_cpus);

277 printed = 1;

278 }

279

280 return nb_cpus;

281 }

282

283 #ifdef TEST

284

285 #include <stdio.h>

286 #include "avstring.h"

287

288 #if !HAVE_GETOPT

289 #include "compat/getopt.c"

290 #endif

291

292 static const struct {

293 int flag;

294 const char *name;

295 } cpu_flag_tab[] = {

296 #if ARCH_AARCH64

297 { AV_CPU_FLAG_ARMV8, "armv8" },

298 { AV_CPU_FLAG_NEON, "neon" },

299 { AV_CPU_FLAG_VFP, "vfp" },

300 #elif ARCH_ARM

301 { AV_CPU_FLAG_ARMV5TE, "armv5te" },

302 { AV_CPU_FLAG_ARMV6, "armv6" },

303 { AV_CPU_FLAG_ARMV6T2, "armv6t2" },

304 { AV_CPU_FLAG_VFP, "vfp" },

305 { AV_CPU_FLAG_VFPV3, "vfpv3" },

306 { AV_CPU_FLAG_NEON, "neon" },

307 { AV_CPU_FLAG_SETEND, "setend" },

308 #elif ARCH_PPC

309 { AV_CPU_FLAG_ALTIVEC, "altivec" },

310 #elif ARCH_X86

311 { AV_CPU_FLAG_MMX, "mmx" },

312 { AV_CPU_FLAG_MMXEXT, "mmxext" },

313 { AV_CPU_FLAG_SSE, "sse" },

314 { AV_CPU_FLAG_SSE2, "sse2" },

315 { AV_CPU_FLAG_SSE2SLOW, "sse2slow" },

316 { AV_CPU_FLAG_SSE3, "sse3" },

317 { AV_CPU_FLAG_SSE3SLOW, "sse3slow" },

318 { AV_CPU_FLAG_SSSE3, "ssse3" },

319 { AV_CPU_FLAG_ATOM, "atom" },

320 { AV_CPU_FLAG_SSE4, "sse4.1" },

321 { AV_CPU_FLAG_SSE42, "sse4.2" },

322 { AV_CPU_FLAG_AVX, "avx" },

323 { AV_CPU_FLAG_XOP, "xop" },

324 { AV_CPU_FLAG_FMA3, "fma3" },

325 { AV_CPU_FLAG_FMA4, "fma4" },

326 { AV_CPU_FLAG_3DNOW, "3dnow" },

327 { AV_CPU_FLAG_3DNOWEXT, "3dnowext" },

328 { AV_CPU_FLAG_CMOV, "cmov" },

329 { AV_CPU_FLAG_AVX2, "avx2" },

330 { AV_CPU_FLAG_BMI1, "bmi1" },

331 { AV_CPU_FLAG_BMI2, "bmi2" },

332 #endif

333 { 0 }

334 };

335

336 static void print_cpu_flags(int cpu_flags, const char *type)

337 {

338 int i;

339

340 printf("cpu_flags(%s) = 0x%08X\n", type, cpu_flags);

341 printf("cpu_flags_str(%s) =", type);

342 for (i = 0; cpu_flag_tab[i].flag; i++)

343 if (cpu_flags & cpu_flag_tab[i].flag)

344 printf(" %s", cpu_flag_tab[i].name);

345 printf("\n");

346 }

347

348

349 int main(int argc, char **argv)

350 {

351 int cpu_flags_raw = av_get_cpu_flags();

352 int cpu_flags_eff;

353 int cpu_count = av_cpu_count();

354 char threads[5] = "auto";

355 int i;

356

357 for(i = 0; cpu_flag_tab[i].flag; i++) {

358 unsigned tmp = 0;

359 if (av_parse_cpu_caps(&tmp, cpu_flag_tab[i].name) < 0) {

360 fprintf(stderr, "Table missing %s\n", cpu_flag_tab[i].name);

361 return 4;

362 }

363 }

364

365 if (cpu_flags_raw < 0)

366 return 1;

367

368 for (;;) {

369 int c = getopt(argc, argv, "c:t:");

370 if (c == -1)

371 break;

372 switch (c) {

373 case 'c':

374 {

375 unsigned flags = av_get_cpu_flags();

376 if (av_parse_cpu_caps(&flags, optarg) < 0)

377 return 2;

378

379 av_force_cpu_flags(flags);

380 break;

381 }

382 case 't':

383 {

384 int len = av_strlcpy(threads, optarg, sizeof(threads));

385 if (len >= sizeof(threads)) {

386 fprintf(stderr, "Invalid thread count '%s'\n", optarg);

387 return 2;

388 }

389 }

390 }

391 }

392

393 cpu_flags_eff = av_get_cpu_flags();

394

395 if (cpu_flags_eff < 0)

396 return 3;

397

398 print_cpu_flags(cpu_flags_raw, "raw");

399 print_cpu_flags(cpu_flags_eff, "effective");

400 printf("threads = %s (cpu_count = %d)\n", threads, cpu_count);

401

402 return 0;

403 }

404

405 #endif

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