ffmpeg.libavutil.cpu

Members

Functions

av_cpu_count

int av_cpu_count()

@return the number of logical CPU cores present.

av_cpu_max_align

size_t av_cpu_max_align()

Get the maximum data alignment that may be required by FFmpeg.

av_force_cpu_flags

void av_force_cpu_flags(int flags)

Disables cpu detection and forces the specified flags. -1 is a special case that disables forcing of specific flags.

av_get_cpu_flags

int av_get_cpu_flags()

Return the flags which specify extensions supported by the CPU. The returned value is affected by av_force_cpu_flags() if that was used before. So av_get_cpu_flags() can easily be used in an application to detect the enabled cpu flags.

av_parse_cpu_caps

int av_parse_cpu_caps(uint* flags, const(char)* s)

Parse CPU caps from a string and update the given AV_CPU_* flags based on that.

av_parse_cpu_flags

int av_parse_cpu_flags(const(char)* s)

Parse CPU flags from a string.

av_set_cpu_flags_mask

void av_set_cpu_flags_mask(int mask)

Set a mask on flags returned by av_get_cpu_flags(). This function is mainly useful for testing. Please use av_force_cpu_flags() and av_get_cpu_flags() instead which are more flexible

Manifest constants

AV_CPU_FLAG_3DNOW

enum AV_CPU_FLAG_3DNOW;

< AMD 3DNOW

AV_CPU_FLAG_3DNOWEXT

enum AV_CPU_FLAG_3DNOWEXT;

< than regular MMX/SSE (e.g. Core1) +////< AMD 3DNowEx

AV_CPU_FLAG_AESNI

enum AV_CPU_FLAG_AESNI;

< Advanced Encryption Standard functions

AV_CPU_FLAG_ALTIVEC

enum AV_CPU_FLAG_ALTIVEC;

< standard

AV_CPU_FLAG_ARMV5TE

enum AV_CPU_FLAG_ARMV5TE;

Undocumented in source but is binding to C. You might be able to learn more by searching the web for its name.

AV_CPU_FLAG_ARMV6

enum AV_CPU_FLAG_ARMV6;

Undocumented in source but is binding to C. You might be able to learn more by searching the web for its name.

AV_CPU_FLAG_ARMV6T2

enum AV_CPU_FLAG_ARMV6T2;

Undocumented in source but is binding to C. You might be able to learn more by searching the web for its name.

AV_CPU_FLAG_ARMV8

enum AV_CPU_FLAG_ARMV8;

Undocumented in source but is binding to C. You might be able to learn more by searching the web for its name.

AV_CPU_FLAG_ATOM

enum AV_CPU_FLAG_ATOM;

< Atom processor, some SSSE3 instructions are slower

AV_CPU_FLAG_AVX

enum AV_CPU_FLAG_AVX;

< AVX functions: requires OS support even if YMM registers aren't used

AV_CPU_FLAG_AVX2

enum AV_CPU_FLAG_AVX2;

< AVX2 functions: requires OS support even if YMM registers aren't used

AV_CPU_FLAG_AVX512

enum AV_CPU_FLAG_AVX512;

< AVX-512 functions: requires OS support even if YMM/ZMM registers aren't used

AV_CPU_FLAG_AVXSLOW

enum AV_CPU_FLAG_AVXSLOW;

< AVX supported, but slow when using YMM registers (e.g. Bulldozer)

AV_CPU_FLAG_BMI1

enum AV_CPU_FLAG_BMI1;

< Bit Manipulation Instruction Set 1

AV_CPU_FLAG_BMI2

enum AV_CPU_FLAG_BMI2;

< Bit Manipulation Instruction Set 2

AV_CPU_FLAG_CMOV

enum AV_CPU_FLAG_CMOV;

< supports cmov instruction

AV_CPU_FLAG_FMA3

enum AV_CPU_FLAG_FMA3;

< Haswell FMA3 functions

AV_CPU_FLAG_FMA4

enum AV_CPU_FLAG_FMA4;

< Bulldozer FMA4 functions

AV_CPU_FLAG_FORCE

enum AV_CPU_FLAG_FORCE;

Undocumented in source but is binding to C. You might be able to learn more by searching the web for its name.

AV_CPU_FLAG_MMX

enum AV_CPU_FLAG_MMX;

< standard MMX

AV_CPU_FLAG_MMX2

enum AV_CPU_FLAG_MMX2;

< SSE integer functions or AMD MMX ext

AV_CPU_FLAG_MMXEXT

enum AV_CPU_FLAG_MMXEXT;

< SSE integer functions or AMD MMX ext

AV_CPU_FLAG_NEON

enum AV_CPU_FLAG_NEON;

Undocumented in source but is binding to C. You might be able to learn more by searching the web for its name.

AV_CPU_FLAG_POWER8

enum AV_CPU_FLAG_POWER8;

< ISA 2.07

AV_CPU_FLAG_SETEND

enum AV_CPU_FLAG_SETEND;

Undocumented in source but is binding to C. You might be able to learn more by searching the web for its name.

AV_CPU_FLAG_SSE

enum AV_CPU_FLAG_SSE;

< SSE functions

AV_CPU_FLAG_SSE2

enum AV_CPU_FLAG_SSE2;

< PIV SSE2 functions

AV_CPU_FLAG_SSE2SLOW

enum AV_CPU_FLAG_SSE2SLOW;

< SSE2 supported, but usually not faster

AV_CPU_FLAG_SSE3

enum AV_CPU_FLAG_SSE3;

< Prescott SSE3 functions

AV_CPU_FLAG_SSE3SLOW

enum AV_CPU_FLAG_SSE3SLOW;

< SSE3 supported, but usually not faster

AV_CPU_FLAG_SSE4

enum AV_CPU_FLAG_SSE4;

< Penryn SSE4.1 functions

AV_CPU_FLAG_SSE42

enum AV_CPU_FLAG_SSE42;

< Nehalem SSE4.2 functions

AV_CPU_FLAG_SSSE3

enum AV_CPU_FLAG_SSSE3;

< than regular MMX/SSE (e.g. Core1) +////< Conroe SSSE3 function

AV_CPU_FLAG_SSSE3SLOW

enum AV_CPU_FLAG_SSSE3SLOW;

< SSSE3 supported, but usually not faster

AV_CPU_FLAG_VFP

enum AV_CPU_FLAG_VFP;

Undocumented in source but is binding to C. You might be able to learn more by searching the web for its name.

AV_CPU_FLAG_VFPV3

enum AV_CPU_FLAG_VFPV3;

Undocumented in source but is binding to C. You might be able to learn more by searching the web for its name.

AV_CPU_FLAG_VFP_VM

enum AV_CPU_FLAG_VFP_VM;

< VFPv2 vector mode, deprecated in ARMv7-A and unavailable in various CPUs implementations

AV_CPU_FLAG_VSX

enum AV_CPU_FLAG_VSX;

< ISA 2.06

AV_CPU_FLAG_XOP

enum AV_CPU_FLAG_XOP;

< Bulldozer XOP functions

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