7160bb71 |
/*
* Copyright (c) 2000, 2001, 2002 Fabrice Bellard
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef AVUTIL_CPU_H
#define AVUTIL_CPU_H
|
6df42f98 |
#include "attributes.h"
|
7160bb71 |
#define AV_CPU_FLAG_FORCE 0x80000000 /* force usage of selected flags (OR) */
/* lower 16 bits - CPU features */
#define AV_CPU_FLAG_MMX 0x0001 ///< standard MMX |
239fdf1b |
#define AV_CPU_FLAG_MMXEXT 0x0002 ///< SSE integer functions or AMD MMX ext |
7160bb71 |
#define AV_CPU_FLAG_MMX2 0x0002 ///< SSE integer functions or AMD MMX ext |
e778e50f |
#define AV_CPU_FLAG_3DNOW 0x0004 ///< AMD 3DNOW |
7160bb71 |
#define AV_CPU_FLAG_SSE 0x0008 ///< SSE functions
#define AV_CPU_FLAG_SSE2 0x0010 ///< PIV SSE2 functions
#define AV_CPU_FLAG_SSE2SLOW 0x40000000 ///< SSE2 supported, but usually not faster |
80fefbed |
///< than regular MMX/SSE (e.g. Core1) |
7160bb71 |
#define AV_CPU_FLAG_3DNOWEXT 0x0020 ///< AMD 3DNowExt
#define AV_CPU_FLAG_SSE3 0x0040 ///< Prescott SSE3 functions |
d593b4ed |
#define AV_CPU_FLAG_SSE3SLOW 0x20000000 ///< SSE3 supported, but usually not faster |
80fefbed |
///< than regular MMX/SSE (e.g. Core1) |
7160bb71 |
#define AV_CPU_FLAG_SSSE3 0x0080 ///< Conroe SSSE3 functions |
eba586b0 |
#define AV_CPU_FLAG_ATOM 0x10000000 ///< Atom processor, some SSSE3 instructions are slower |
7160bb71 |
#define AV_CPU_FLAG_SSE4 0x0100 ///< Penryn SSE4.1 functions
#define AV_CPU_FLAG_SSE42 0x0200 ///< Nehalem SSE4.2 functions |
cdeba2de |
#define AV_CPU_FLAG_AVX 0x4000 ///< AVX functions: requires OS support even if YMM registers aren't used |
c312bfac |
#define AV_CPU_FLAG_AVXSLOW 0x8000000 ///< AVX supported, but slow when using YMM registers (e.g. Bulldozer) |
96a59cf3 |
#define AV_CPU_FLAG_XOP 0x0400 ///< Bulldozer XOP functions
#define AV_CPU_FLAG_FMA4 0x0800 ///< Bulldozer FMA4 functions |
039e9fe0 |
// #if LIBAVUTIL_VERSION_MAJOR <52 |
1c600888 |
#define AV_CPU_FLAG_CMOV 0x1001000 ///< supports cmov instruction |
039e9fe0 |
// #else
// #define AV_CPU_FLAG_CMOV 0x1000 ///< supports cmov instruction
// #endif |
865b70bc |
#define AV_CPU_FLAG_AVX2 0x8000 ///< AVX2 functions: requires OS support even if YMM registers aren't used |
a2af8edd |
#define AV_CPU_FLAG_FMA3 0x10000 ///< Haswell FMA3 functions |
0bc3de19 |
#define AV_CPU_FLAG_BMI1 0x20000 ///< Bit Manipulation Instruction Set 1
#define AV_CPU_FLAG_BMI2 0x40000 ///< Bit Manipulation Instruction Set 2 |
865b70bc |
|
7160bb71 |
#define AV_CPU_FLAG_ALTIVEC 0x0001 ///< standard |
7d07ee5a |
#define AV_CPU_FLAG_VSX 0x0002 ///< ISA 2.06
#define AV_CPU_FLAG_POWER8 0x0004 ///< ISA 2.07 |
7160bb71 |
|
d526c533 |
#define AV_CPU_FLAG_ARMV5TE (1 << 0)
#define AV_CPU_FLAG_ARMV6 (1 << 1)
#define AV_CPU_FLAG_ARMV6T2 (1 << 2)
#define AV_CPU_FLAG_VFP (1 << 3)
#define AV_CPU_FLAG_VFPV3 (1 << 4)
#define AV_CPU_FLAG_NEON (1 << 5) |
8675bcb0 |
#define AV_CPU_FLAG_ARMV8 (1 << 6) |
1e519b9d |
#define AV_CPU_FLAG_SETEND (1 <<16) |
d526c533 |
|
c6c98d08 |
/**
* Return the flags which specify extensions supported by the CPU. |
64604e26 |
* 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 a application to
* detect the enabled cpu flags. |
c6c98d08 |
*/
int av_get_cpu_flags(void);
|
5ad38d93 |
/**
* Disables cpu detection and forces the specified flags. |
f64cfba9 |
* -1 is a special case that disables forcing of specific flags. |
5ad38d93 |
*/
void av_force_cpu_flags(int flags);
|
6df42f98 |
/** |
4d851f8d |
* Set a mask on flags returned by av_get_cpu_flags().
* This function is mainly useful for testing. |
6df42f98 |
* Please use av_force_cpu_flags() and av_get_cpu_flags() instead which are more flexible |
4d851f8d |
*
* @warning this function is not thread safe.
*/ |
6df42f98 |
attribute_deprecated void av_set_cpu_flags_mask(int mask); |
5ad38d93 |
|
3527a739 |
/**
* Parse CPU flags from a string.
* |
5e1286a7 |
* The returned flags contain the specified flags as well as related unspecified flags.
*
* This function exists only for compatibility with libav.
* Please use av_parse_cpu_caps() when possible. |
3527a739 |
* @return a combination of AV_CPU_* flags, negative on error.
*/ |
4b529edf |
attribute_deprecated |
3527a739 |
int av_parse_cpu_flags(const char *s);
|
eadac34c |
/**
* Parse CPU caps from a string and update the given AV_CPU_* flags based on that.
*
* @return negative on error.
*/
int av_parse_cpu_caps(unsigned *flags, const char *s);
|
fe40a9f9 |
/** |
2a6eaeaa |
* @return the number of logical CPU cores present.
*/
int av_cpu_count(void);
|
153382e1 |
#endif /* AVUTIL_CPU_H */ |