27 #if HAVE_SCHED_GETAFFINITY 31 #if HAVE_GETPROCESSAFFINITYMASK 36 #include <sys/param.h> 38 #include <sys/types.h> 39 #include <sys/sysctl.h> 77 #define CPUFLAG_MMXEXT (AV_CPU_FLAG_MMX | AV_CPU_FLAG_MMXEXT | AV_CPU_FLAG_CMOV) 78 #define CPUFLAG_3DNOW (AV_CPU_FLAG_3DNOW | AV_CPU_FLAG_MMX) 79 #define CPUFLAG_3DNOWEXT (AV_CPU_FLAG_3DNOWEXT | CPUFLAG_3DNOW) 80 #define CPUFLAG_SSE (AV_CPU_FLAG_SSE | CPUFLAG_MMXEXT) 81 #define CPUFLAG_SSE2 (AV_CPU_FLAG_SSE2 | CPUFLAG_SSE) 82 #define CPUFLAG_SSE2SLOW (AV_CPU_FLAG_SSE2SLOW | CPUFLAG_SSE2) 83 #define CPUFLAG_SSE3 (AV_CPU_FLAG_SSE3 | CPUFLAG_SSE2) 84 #define CPUFLAG_SSE3SLOW (AV_CPU_FLAG_SSE3SLOW | CPUFLAG_SSE3) 85 #define CPUFLAG_SSSE3 (AV_CPU_FLAG_SSSE3 | CPUFLAG_SSE3) 86 #define CPUFLAG_SSE4 (AV_CPU_FLAG_SSE4 | CPUFLAG_SSSE3) 87 #define CPUFLAG_SSE42 (AV_CPU_FLAG_SSE42 | CPUFLAG_SSE4) 88 #define CPUFLAG_AVX (AV_CPU_FLAG_AVX | CPUFLAG_SSE42) 89 #define CPUFLAG_AVXSLOW (AV_CPU_FLAG_AVXSLOW | CPUFLAG_AVX) 90 #define CPUFLAG_XOP (AV_CPU_FLAG_XOP | CPUFLAG_AVX) 91 #define CPUFLAG_FMA3 (AV_CPU_FLAG_FMA3 | CPUFLAG_AVX) 92 #define CPUFLAG_FMA4 (AV_CPU_FLAG_FMA4 | CPUFLAG_AVX) 93 #define CPUFLAG_AVX2 (AV_CPU_FLAG_AVX2 | CPUFLAG_AVX) 94 #define CPUFLAG_BMI2 (AV_CPU_FLAG_BMI2 | AV_CPU_FLAG_BMI1) 95 static const AVOption cpuflags_opts[] = {
140 .option = cpuflags_opts,
145 const AVClass *pclass = &
class;
150 return flags & INT_MAX;
156 #if HAVE_SCHED_GETAFFINITY && defined(CPU_COUNT) 161 if (!sched_getaffinity(0,
sizeof(cpuset), &cpuset))
162 nb_cpus = CPU_COUNT(&cpuset);
163 #elif HAVE_GETPROCESSAFFINITYMASK 164 DWORD_PTR proc_aff, sys_aff;
165 if (GetProcessAffinityMask(GetCurrentProcess(), &proc_aff, &sys_aff))
166 nb_cpus = av_popcount64(proc_aff);
167 #elif HAVE_SYSCTL && defined(HW_NCPU) 168 int mib[2] = { CTL_HW, HW_NCPU };
169 size_t len =
sizeof(nb_cpus);
171 if (sysctl(mib, 2, &nb_cpus, &len,
NULL, 0) == -1)
173 #elif HAVE_SYSCONF && defined(_SC_NPROC_ONLN) 174 nb_cpus = sysconf(_SC_NPROC_ONLN);
175 #elif HAVE_SYSCONF && defined(_SC_NPROCESSORS_ONLN) 176 nb_cpus = sysconf(_SC_NPROCESSORS_ONLN);
#define AV_CPU_FLAG_ALTIVEC
standard
void av_set_cpu_flags_mask(int mask)
Set a mask on flags returned by av_get_cpu_flags().
#define AV_CPU_FLAG_CMOV
i686 cmov
const char * class_name
The name of the class; usually it is the same name as the context structure type to which the AVClass...
int ff_get_cpu_flags_ppc(void)
This function MAY rely on signal() or fork() in order to make sure AltiVec is present.
int av_parse_cpu_flags(const char *s)
Parse CPU flags from a string.
#define AV_CPU_FLAG_ATOM
Atom processor, some SSSE3 instructions are slower.
static const uint16_t mask[17]
int av_opt_eval_flags(void *obj, const AVOption *o, const char *val, int *flags_out)
#define AV_CPU_FLAG_ARMV6T2
#define AV_CPU_FLAG_VFP_VM
VFPv2 vector mode, deprecated in ARMv7-A and unavailable in various CPUs implementations.
#define AV_CPU_FLAG_ARMV5TE
int ff_get_cpu_flags_x86(void)
#define AV_CPU_FLAG_VFPV3
#define AV_CPU_FLAG_ARMV6
int ff_get_cpu_flags_aarch64(void)
#define AV_CPU_FLAG_BMI1
Bit Manipulation Instruction Set 1.
#define AV_CPU_FLAG_MMX
standard MMX
Describe the class of an AVClass context structure.
int av_get_cpu_flags(void)
Return the flags which specify extensions supported by the CPU.
common internal and external API header
#define AV_CPU_FLAG_ARMV8
int ff_get_cpu_flags_arm(void)